A homologous group of cyclic GLUCANS consisting of alpha-1,4 bound glucose units obtained by the action of cyclodextrin glucanotransferase on starch or similar substrates. The enzyme is produced by certain species of Bacillus. Cyclodextrins form inclusion complexes with a wide variety of substances.
Cyclic GLUCANS consisting of six (6) glucopyranose units linked by 1,4-glycosidic bonds.
Cyclic GLUCANS consisting of seven (7) glucopyranose units linked by 1,4-glycosidic bonds.
Cyclic GLUCANS consisting of eight (8) glucopyranose units linked by 1,4-glycosidic bonds.
A phenothiazine derivative that is used as an antipruritic.
Complex compounds in which a dumbbell shaped molecule is encircled by a macrocycle. They are named after rota (wheel) and axis (axle). Notation with a prefix is used to indicate the number of interlocked components. They have potential use in NANOTECHNOLOGY. Rotaxanes have been made with CYCLODEXTRINS and CYCLIC ETHERS.
The ability of a substance to be dissolved, i.e. to form a solution with another substance. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)
Any of a group of polysaccharides of the general formula (C6-H10-O5)n, composed of a long-chain polymer of glucose in the form of amylose and amylopectin. It is the chief storage form of energy reserve (carbohydrates) in plants.
Chemistry dealing with the composition and preparation of agents having PHARMACOLOGIC ACTIONS or diagnostic use.
A family of gram-positive, saprophytic bacteria occurring in soil and aquatic environments.
The rotation of linearly polarized light as it passes through various media.
A measure of relative protection provided by SUNSCREENING AGENTS against burns due to ultraviolet (UV) radiation from a light source.
Enzymes that catalyze the endohydrolysis of 1,4-alpha-glycosidic linkages in STARCH; GLYCOGEN; and related POLYSACCHARIDES and OLIGOSACCHARIDES containing 3 or more 1,4-alpha-linked D-glucose units.
Salts and esters of the 14-carbon saturated monocarboxylic acid--myristic acid.
An enzyme that catalyzes the hydrolysis of terminal 1,4-linked alpha-D-glucose residues successively from non-reducing ends of polysaccharide chains with the release of beta-glucose. It is also able to hydrolyze 1,6-alpha-glucosidic bonds when the next bond in sequence is 1,4.
The chemical and physical integrity of a pharmaceutical product.
Enzymes that catalyze the transfer of glucose from a nucleoside diphosphate glucose to an acceptor molecule which is frequently another carbohydrate. EC 2.4.1.-.
An inhibitor of ALPHA-GLUCOSIDASES that retards the digestion and absorption of DIETARY CARBOHYDRATES in the SMALL INTESTINE.
An interleukin-1 subtype that is synthesized as an inactive membrane-bound pro-protein. Proteolytic processing of the precursor form by CASPASE 1 results in release of the active form of interleukin-1beta from the membrane.
Forms to which substances are incorporated to improve the delivery and the effectiveness of drugs. Drug carriers are used in drug-delivery systems such as the controlled-release technology to prolong in vivo drug actions, decrease drug metabolism, and reduce drug toxicity. Carriers are also used in designs to increase the effectiveness of drug delivery to the target sites of pharmacological actions. Liposomes, albumin microspheres, soluble synthetic polymers, DNA complexes, protein-drug conjugates, and carrier erythrocytes among others have been employed as biodegradable drug carriers.
The homogeneous mixtures formed by the mixing of a solid, liquid, or gaseous substance (solute) with a liquid (the solvent), from which the dissolved substances can be recovered by physical processes. (From Grant & Hackh's Chemical Dictionary, 5th ed)
The thermodynamic interaction between a substance and WATER.
The preparation, mixing, and assembling of a drug. (From Remington, The Science and Practice of Pharmacy, 19th ed, p1814)
A mass spectrometric technique that is used for the analysis of a wide range of biomolecules, such as glycoalkaloids, glycoproteins, polysaccharides, and peptides. Positive and negative fast atom bombardment spectra are recorded on a mass spectrometer fitted with an atom gun with xenon as the customary beam. The mass spectra obtained contain molecular weight recognition as well as sequence information.
Differential thermal analysis in which the sample compartment of the apparatus is a differential calorimeter, allowing an exact measure of the heat of transition independent of the specific heat, thermal conductivity, and other variables of the sample.
Spectroscopic method of measuring the magnetic moment of elementary particles such as atomic nuclei, protons or electrons. It is employed in clinical applications such as NMR Tomography (MAGNETIC RESONANCE IMAGING).
An 11-kDa protein associated with the outer membrane of many cells including lymphocytes. It is the small subunit of the MHC class I molecule. Association with beta 2-microglobulin is generally required for the transport of class I heavy chains from the endoplasmic reticulum to the cell surface. Beta 2-microglobulin is present in small amounts in serum, csf, and urine of normal people, and to a much greater degree in the urine and plasma of patients with tubular proteinemia, renal failure, or kidney transplants.
A genus of BACILLACEAE that are spore-forming, rod-shaped cells. Most species are saprophytic soil forms with only a few species being pathogenic.
Models used experimentally or theoretically to study molecular shape, electronic properties, or interactions; includes analogous molecules, computer-generated graphics, and mechanical structures.
Volunteer organizations whose members perform work for the hospital without compensation.
Personnel whose work is prescribed and supervised by the dentist.
Substances intended to be applied to the human body for cleansing, beautifying, promoting attractiveness, or altering the appearance without affecting the body's structure or functions. Included in this definition are skin creams, lotions, perfumes, lipsticks, fingernail polishes, eye and facial makeup preparations, permanent waves, hair colors, toothpastes, and deodorants, as well as any material intended for use as a component of a cosmetic product. (U.S. Food & Drug Administration Center for Food Safety & Applied Nutrition Office of Cosmetics Fact Sheet (web page) Feb 1995)
Drugs manufactured and sold with the intent to misrepresent its origin, authenticity, chemical composition, and or efficacy. Counterfeit drugs may contain inappropriate quantities of ingredients not listed on the label or package. In order to further deceive the consumer, the packaging, container, or labeling, may be inaccurate, incorrect, or fake.
Exploitation through misrepresentation of the facts or concealment of the purposes of the exploiter.
A cellulose derivative which is a beta-(1,4)-D-glucopyranose polymer. It is used as a bulk laxative and as an emulsifier and thickener in cosmetics and pharmaceuticals and as a stabilizer for reagents.
Completed forms of the pharmaceutical preparation in which prescribed doses of medication are included. They are designed to resist action by gastric fluids, prevent vomiting and nausea, reduce or alleviate the undesirable taste and smells associated with oral administration, achieve a high concentration of drug at target site, or produce a delayed or long-acting drug effect.
A mobile, very volatile, highly flammable liquid used as an inhalation anesthetic and as a solvent for waxes, fats, oils, perfumes, alkaloids, and gums. It is mildly irritating to skin and mucous membranes.
A serotonin receptor (5HT-3 selective) antagonist that has been used as an antiemetic for cancer chemotherapy patients.
The branch of pharmacology that deals directly with the effectiveness and safety of drugs in humans.
The study of the origin, nature, properties, and actions of drugs and their effects on living organisms.
Procedures concerned with the remedial treatment or prevention of diseases.
Societies whose membership is limited to pharmacists.
A family of 6-membered heterocyclic compounds occurring in nature in a wide variety of forms. They include several nucleic acid constituents (CYTOSINE; THYMINE; and URACIL) and form the basic structure of the barbiturates.
A genus of gram-positive bacteria in the family Thermoactinomycetaceae, that can cause FARMER'S LUNG.
A form of alveolitis or pneumonitis due to an acquired hypersensitivity to inhaled antigens associated with farm environment. Antigens in the farm dust are commonly from bacteria actinomycetes (SACCHAROPOLYSPORA and THERMOACTINOMYCES), fungi, and animal proteins in the soil, straw, crops, pelts, serum, and excreta.
An order of gram-positive, primarily aerobic BACTERIA that tend to form branching filaments.
A naturally occurring lipid pigment with histochemical characteristics similar to ceroid. It accumulates in various normal tissues and apparently increases in quantity with age.
The single layer of pigment-containing epithelial cells in the RETINA, situated closely to the tips (outer segments) of the RETINAL PHOTORECEPTOR CELLS. These epithelial cells are macroglia that perform essential functions for the photoreceptor cells, such as in nutrient transport, phagocytosis of the shed photoreceptor membranes, and ensuring retinal attachment.
A group of tetraterpenes, with four terpene units joined head-to-tail. Biologically active members of this class are used clinically in the treatment of severe cystic ACNE; PSORIASIS; and other disorders of keratinization.
A retrogressive pathological change in the retina, focal or generalized, caused by genetic defects, inflammation, trauma, vascular disease, or aging. Degeneration affecting predominantly the macula lutea of the retina is MACULAR DEGENERATION. (Newell, Ophthalmology: Principles and Concepts, 7th ed, p304)
The layer of pigment-containing epithelial cells in the RETINA; the CILIARY BODY; and the IRIS in the eye.
Degenerative changes in the RETINA usually of older adults which results in a loss of vision in the center of the visual field (the MACULA LUTEA) because of damage to the retina. It occurs in dry and wet forms.

Opposite behavior of two isozymes when refolding in the presence of non-ionic detergents. (1/1074)

GroEL has a greater affinity for the mitochondrial isozyme (mAAT) of aspartate aminotransferase than for its cytosolic counterpart (cAAT) (Mattingly JR Jr, Iriarte A, Martinez-Carrion M, 1995, J Biol Chem 270:1138-1148), two proteins that share a high degree of sequence similarity and an almost identical spatial structure. The effect of detergents on the refolding of these large, dimeric isozymes parallels this difference in behavior. The presence of non-ionic detergents such as Triton X-100 or lubrol at concentrations above their critical micelle concentration (CMC) interferes with reactivation of mAAT unfolded in guanidinium chloride but increases the yield of cAAT refolding at low temperatures. The inhibitory effect of detergents on the reactivation of mAAT decreases progressively as the addition of detergents is delayed after starting the refolding reaction. The rate of disappearance of the species with affinity for binding detergents coincides with the slowest of the two rate-limiting steps detected in the refolding pathway of mAAT. Limited proteolysis studies indicate that the overall structure of the detergent-bound mAAT resembles that of the protein in a complex with GroEL. The mAAT folding intermediates trapped in the presence of detergents can resume reactivation either upon dilution of the detergent below its CMC or by adding beta-cyclodextrin. Thus, isolation of otherwise transient productive folding intermediates for further characterization is possible through the use of detergents.  (+info)

Antilithiasic effect of beta-cyclodextrin in LPN hamster: comparison with cholestyramine. (2/1074)

Beta-Cyclodextrin (BCD), a cyclic oligosaccharide that binds cholesterol and bile acids in vitro, has been previously shown to be an effective plasma cholesterol lowering agent in hamsters and domestic pigs. This study examined the effects of BCD as compared with cholestyramine on cholesterol and bile acid metabolism in the LPN hamster model model for cholesterol gallstones. The incidence of cholesterol gallstones was 65% in LPN hamsters fed the lithogenic diet, but decreased linearly with increasing amounts of BCD in the diet to be nil at a dose of 10% BCD. In gallbladder bile, cholesterol, phospholipid and chenodeoxycholate concentrations, hydrophobic and lithogenic indices were all significantly decreased by 10% BCD. Increases in bile acid synthesis (+110%), sterol 27-hydroxylase activity (+106%), and biliary cholate secretion (+140%) were also observed, whereas the biliary secretion of chenodeoxycholate decreased (-43%). The fecal output of chenodeoxycholate and cholate (plus derivatives) was increased by +147 and +64%, respectively, suggesting that BCD reduced the chenodeoxycholate intestinal absorption preferentially. Dietary cholestyramine decreased biliary bile acid concentration and secretion, but dramatically increased the fecal excretion of chenodeoxycholate and cholate plus their derivatives (+328 and +1940%, respectively). In contrast to BCD, the resin increased the lithogenic index in bile, induced black gallstones in 34% of hamsters, and stimulated markedly the activities of HMG-CoA reductase (+670%), sterol 27-hydroxylase (+310%), and cholesterol 7alpha-hydroxylase (+390%). Thus, beta-cyclodextrin (BCD) prevented cholesterol gallstone formation by decreasing specifically the reabsorption of chenodeoxycholate, stimulating its biosynthesis and favoring its fecal elimination. BCD had a milder effect on lipid metabolism than cholestyramine and does not predispose animals to black gallstones as cholestyramine does in this animal model.  (+info)

Extraction of cholesterol with methyl-beta-cyclodextrin perturbs formation of clathrin-coated endocytic vesicles. (3/1074)

The importance of cholesterol for endocytosis has been investigated in HEp-2 and other cell lines by using methyl-beta-cyclodextrin (MbetaCD) to selectively extract cholesterol from the plasma membrane. MbetaCD treatment strongly inhibited endocytosis of transferrin and EGF, whereas endocytosis of ricin was less affected. The inhibition of transferrin endocytosis was completely reversible. On removal of MbetaCD it was restored by continued incubation of the cells even in serum-free medium. The recovery in serum-free medium was inhibited by addition of lovastatin, which prevents cholesterol synthesis, but endocytosis recovered when a water-soluble form of cholesterol was added together with lovastatin. Electron microscopical studies of MbetaCD-treated HEp-2 cells revealed that typical invaginated caveolae were no longer present. Moreover, the invagination of clathrin-coated pits was strongly inhibited, resulting in accumulation of shallow coated pits. Quantitative immunogold labeling showed that transferrin receptors were concentrated in coated pits to the same degree (approximately sevenfold) after MbetaCD treatment as in control cells. Our results therefore indicate that although clathrin-independent (and caveolae-independent) endocytosis still operates after removal of cholesterol, cholesterol is essential for the formation of clathrin-coated endocytic vesicles.  (+info)

Cellular cholesterol regulates expression of the macrophage type B scavenger receptor, CD36. (4/1074)

CD36, the macrophage type B scavenger receptor, binds and internalizes oxidized low density lipoprotein (OxLDL), and may potentially play a role in the development of atherosclerosis. We reported that the native and modified low density lipoproteins increased CD36 mRNA and protein ( J. Biol. Chem. 272: 21654-21659). In this study, we investigated the effect of alterations of cellular cholesterol content on macrophage expression of CD36. Depletion of cholesterol by treatment with beta-cyclodextrins (beta-cyclodextrin [beta-CD] and methylated beta-cyclodextrin [MebetaCD]) significantly decreased CD36 mRNA and 125I-labeled OxLDL binding. Conversely, loading macrophages with cholesterol or cholesteryl ester (acetate) with MebetaCD:cholesterol complexes increased CD36 mRNA, 125I-labeled OxLDL binding, and CD36 surface expression as determined by fluorescence activated cell sorting. Thus, CD36 expression paralleled cellular cholesterol levels after removal of cholesterol with beta-cyclodextrins or addition of cholesterol with MebetaCD:cholesterol complexes. Neither cholesterol depletion nor loading altered expression of type A scavenger receptor mRNA. Kinetics studies showed that changes in CD36 mRNA occurred after changes of cellular cholesterol. Neither beta-cyclodextrins nor MebetaCD:cholesterol altered CD36 mRNA half-life in the presence of actinomycin D, suggesting that alterations in CD36 expression by cholesterol occur at the transcriptional level. These experiments demonstrate that CD36 expression is enhanced by cholesterol and down-regulated by cholesterol efflux, and imply that macrophage expression of CD36 and foam cell formation in atherosclerotic lesions may be perpetuated by a cycle in which lipids drive expression of CD36 in a self-regulatory manner.  (+info)

Critical role for cholesterol in Lyn-mediated tyrosine phosphorylation of FcepsilonRI and their association with detergent-resistant membranes. (5/1074)

Tyrosine phosphorylation of the high affinity immunoglobulin (Ig)E receptor (FcepsilonRI) by the Src family kinase Lyn is the first known biochemical step that occurs during activation of mast cells and basophils after cross-linking of FcepsilonRI by antigen. The hypothesis that specialized regions in the plasma membrane, enriched in sphingolipids and cholesterol, facilitate the coupling of Lyn and FcepsilonRI was tested by investigating functional and structural effects of cholesterol depletion on Lyn/FcepsilonRI interactions. We find that cholesterol depletion with methyl-beta-cyclodextrin substantially reduces stimulated tyrosine phosphorylation of FcepsilonRI and other proteins while enhancing more downstream events that lead to stimulated exocytosis. In parallel to its inhibition of tyrosine phosphorylation, cholesterol depletion disrupts the interactions of aggregated FcepsilonRI and Lyn on intact cells and also disrupts those interactions with detergent-resistant membranes that are isolated by sucrose gradient ultracentrifugation of lysed cells. Importantly, cholesterol repletion restores receptor phosphorylation together with the structural interactions. These results provide strong evidence that membrane structure, maintained by cholesterol, plays a critical role in the initiation of FcepsilonRI signaling.  (+info)

Sweet taste responses of mouse chorda tympani neurons: existence of gurmarin-sensitive and -insensitive receptor components. (6/1074)

Inhibitory effects of gurmarin (gur) on responses to sucrose and other sweeteners of single fibers of the chorda tympani nerve in C57BL mice were examined. Of 30 single fibers that strongly responded to 0. 5 M sucrose but were not or to lesser extent responsive to 0.1 M NaCl, 0.01 M HCl, and 0.02 M quinine HCl (sucrose-best fibers), 16 fibers showed large suppression of responses to sucrose and other sweeteners by lingual treatment with 4.8 microM (approximately 20 microg/ml) gur (suppressed to 4-52% of control: gur-sensitive fibers), whereas the remaining 14 fibers showed no such gur inhibition (77-106% of control: gur-insensitive fibers). In gur-sensitive fibers, responses to sucrose inhibited by gur recovered to approximately 70% of control responses after rinsing the tongue with 15 mM beta-cyclodextrin and were almost abolished by further treatment with 2% pronase. In gur-insensitive fibers, sucrose responses were not inhibited by gur, but were largely suppressed by pronase. These results suggest existence of two different receptor components for sweeteners with different susceptibilities to gur in mouse taste cells, one gur sensitive and the other gur insensitive. Taste cells possessing each component may be specifically innervated by a particular type of chorda tympani neurons.  (+info)

Intracellular phosphotyrosine induction by major histocompatibility complex class II requires co-aggregation with membrane rafts. (7/1074)

Cross-linking MHC class II molecules human leukocyte antigen (HLA-DR) on the surface of THP-1 cells was found to induce their entry into the glycolipid-enriched membrane fraction of the plasma membrane. At the cellular level, this resulted in the synergistic co-aggregation of class II with cholera toxin, a marker of membrane rafts. The accompanying induction of intracellular protein tyrosine phosphorylation could be inhibited by treating cells with methyl-beta-cyclodextrin, a drug that chelates membrane cholesterol and thereby disperses membrane rafts. Signaling could also be inhibited by treating cells with the Src-family kinase inhibitor PP1. Together, these results show that the induced association of class II molecules with membrane rafts can contribute to their aggregation on the cell surface and mediate an association with intracellular protein-tyrosine kinases.  (+info)

Comparison of the capacity of beta-cyclodextrin derivatives and cyclophanes to shuttle cholesterol between cells and serum lipoproteins. (8/1074)

Previous studies from this laboratory have demonstrated that low concentrations of cyclodextrins (<1.0 mm), when added to serum, act catalytically as cholesterol shuttles to accelerate the exchange of free cholesterol between cells and serum lipoproteins. As cholesterol shuttles, cyclodextrins have the potential to serve as pharmacological agents for modifying cholesterol metabolism. In the present study, we have quantitated the cholesterol-shuttling capacity of a series of newly synthesized beta-cyclodextrin derivatives (betaCDs), with varying structure, and two double-decker cyclophanes. The general protocol is as follows. [(3)H]cholesterol-labeled CHOK1 cells are incubated for 2 h with the test compounds alone or together with 5% human serum, and efflux of the cellular [(3)H]cholesterol is measured. As methyl beta-cyclodextrin (MbetaCD) served as the basis for comparison, initial experiments were conducted that demonstrated there was a dose-dependent stimulation of cell cholesterol efflux as the concentration of MbetaCD increased, with an EC(50) that was calculated to be 0.05 mm. To determine the cholesterol-shuttling capacity of the newly synthesized compounds, cell cholesterol efflux is measured when the compounds are present alone, at a concentration of 0.05 mm, or together with 5% human serum. Our results demonstrate that the double-decker cyclophanes are the most efficient cholesterol shuttles. Under our experimental conditions, methyl beta-cyclodextrin (MbetaCD) approximately doubles the efflux of cell cholesterol to serum, whereas one of the double-decker cyclophanes produces a 4-fold stimulation in efflux. Four of the beta-cyclodextrin derivatives (betaCDs) display shuttling ability similar to that of MbetaCD. Furthermore, there does not appear to be a structural pattern among the other betaCDs which could explain their shuttling capacity.  (+info)

A multiple regression model was generated, which can satisfactorily estimate the association constants (K-a) for the inclusion complexation of beta-cyclodextrin with mono- and 1,4-disubstituted benzenes. It was found that lnK(a) was correlated with the substituent molar refraction (R-m), hydrophobic constant (pi) and Hammett constant sigma) of the guest compounds with a correlation coefficient of 0.95. The main driving forces for beta-cyclodextrin complexation was concluded to consist of van der Waals forces and hydrophobic interactions, while the influence of electronic effects was small.; A multiple regression model was generated, which can satisfactorily estimate the association constants (K-a) for the inclusion complexation of beta-cyclodextrin with mono- and 1,4-disubstituted benzenes. It was found that lnK(a) was correlated with the substituent molar refraction (R-m), hydrophobic constant (pi) and Hammett constant sigma) of the guest compounds with a correlation coefficient of 0.95. The ...
in Journal of separation science (2015), 38(11), 1813-21. To further evaluate the feasibility and applicability of the one-pot strategy in monolithic column preparation, two novel beta-cyclodextrin-functionalized organic polymeric monoliths were prepared using ... [more ▼]. To further evaluate the feasibility and applicability of the one-pot strategy in monolithic column preparation, two novel beta-cyclodextrin-functionalized organic polymeric monoliths were prepared using two beta-cyclodextrin derivatives, i.e. mono(6-amino-6-deoxy)-beta-cyclodextrin and heptakis(6-amino-6-deoxy)-beta-cyclodextrin. In this improved method, mono(6-amino-6-deoxy)-beta-cyclodextrin or heptakis(6-amino-6-deoxy)-beta-cyclodextrin reacted with glycidyl methacrylate to generate the corresponding functional monomers and were subsequently copolymerized with ethylene dimethacrylate. The polymerization conditions for both monoliths were carefully optimized to obtain satisfactory column performance with respect to column ...
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The plasma membrane of eukaryotic cells contains nanodomains known as lipid rafts. Cholesterol depletion is a widely used technique for studying lipid rafts and their involvement in cellular processes. Cholesterol depletion has been reported to cause both increased and abolished T cell signaling. The abolished cell signaling upon cholesterol depletion is likely to be caused by substantial cell death as demonstrated by cell viability measurements. We have investigated how cholesterol depletion alters T cell activation by analyzing Jurkat T cells upon extraction of 10, 20, 30, 40 and 50% of total cholesterol using methyl β cyclodextrin (MBCD), a protocol in which cholesterol depletion does not have any adverse effect on cell viability.Upon cholesterol depletion peripheral actin polymerization and aggregation of the lipid raft marker GM1 in the plasma membrane is observed. The aggregation of GM1 upon cholesterol depletion is dependent on signaling protein Lck. The aggregated GM1 domains colocalize ...
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1990) Analysis of pseudo-binary solubility diagrams. In: XXI International Conference on Solution Chemistry, 5 - 10 August, Ottawa, Canada ...
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Scientists have identified a -selfish- gene that can potentially remove cholesterol from blood vessels and help prevent heart disease.
Benesi-Hildeband and Jobs plots show the stoichiometry of MBCA:β-CDx complex is 1:1.•XRD study shows MBCA:β-CDx inclusion complex has an amorphous ...
Khushwinder Kaur, Shivani Uppal, Ravneet Kaur, Jyoti Agarwal and Surinder Kumar Mehta (2015): Energy efficient, facile and cost effective methodology for formation of an inclusion complex of resveratrol with hp-β-CD. New J. Chem., 2015, 39, 8855 ...
Recombinant protein of human LanC lantibiotic synthetase component C-like 1 (bacterial) (LANCL1), transcript variant 2, 20 ug available for purchase from OriGene - Your Gene Company.
The aim of present study is to highlight the effects of β-cyclodextrin (BCD) and hydroxypropyl-β-cyclodextrin (HBCD) and also the effect of their concentrations and methods of inclusion complexation on solubility and antibacterial activity of trimethoprim [TMP] by inclusion complex formation. The inclusion complexes of TMP were prepared by solvent evaporation, spray drying, kneading and physical mixture methods in 1:1 and 1:2 ratios. The inclusion complexes were characterized by Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), differential scanning calorimetry (DSC), dissolution study and antimicrobial activity by disk diffusion method. Fourier transform infrared spectroscopy (FT-IR) and X-ray diffraction (XRD) results proved formation of inclusion complex of TEM with cyclodextrins. XRD showed decrease in crystanality of TEM after complexation with CDs. The results of saturation solubility study and release study prevailed the more increase in solubility of TMP by HPCD than
Methyl-beta-cyclodextrin (M beta CD) is a cyclic oligosaccharide, commonly used as a pharmacological agent to deplete membrane cholesterol. In this study, we examined the effect of M beta CD on adipose-derived mesenchymal stromal cells (ASCs) isolated form healthy horses (ASC(CTRL)) and from horses suffering from metabolic syndrome (ASC(EMS)). We investigated the changes in the mRNA levels of the glucose transporter 4 (GLUT4) and found that M beta CD application may lead to a significant improvement in glucose transport in ASC(EMS). We also showed that M beta CD treatment affected GLUT4 upregulation in an insulin-independent manner via an NO-dependent signaling pathway. Furthermore, the analysis of superoxide dismutase activity (SOD) and reactive oxygen species (ROS) levels showed that M beta CD treatment was associated with an increased antioxidant capacity in ASC(EMS). Moreover, we indicated that methyl-beta-cyclodextrin treatment did not cause a dysfunction of the endoplasmic reticulum and lysosomes.
The interactions of trimethoprim, sulphadiazine and sulphamethoxazole with natural (alpha-, beta-, gamma-) and amorphous (RAMEB) or crystalline (DIMEB) methylated beta-cyclodextrins were investigated both in aqueous solution (using phase-solubility analysis) and in the solid state (using DSC supported by X-ray analysis). In particular, DSC studies enabled determination of the relative degree of crystallinity of each drug in its physical and ground mixtures with the different cyclodextrins on the basis of the variation of its heat of fusion in comparison with that of the pure drug. In all cases, the host cavity size was a prevalent factor for the inclusion complexation in liquid state. On the contrary, it had a negligible effect on solid-state interactions in terms of drug amorphization. DIMEB and RAMEB exhibited similar performances in aqueous solution, showing that the presence of methyl-groups improved the complexing and solubilizing properties of beta-cyclodextrin. However, DSC studies ...
The inclusion complexation of pyrimethamine in 2-hydroxypropyl-beta-cyclodextrin has been investigated by 2D H-1 NMR, FTIR and UV/visible spectroscopy and also by molecular modelling methods (AM1, PM3, MM3). From the phase-solubility diagram a linear increase was observed in pyrimethamine aqueous solubility in the presence of 2-hydroxypropyl-beta-cyclodextrin, evidencing the formation of a soluble inclusion complex. According to the continuous variation method (Jobs plot) applied to fluorescence measurements, a 1:1 stoichiometry has been proposed for the complex. Concerning the structure of the complex, a Cl-in orientation of pyrimethamine in the 2-hydroxypropyl-o-cyclodextrin cavity has been proposed from the theoretical calculations, being confirmed by two-dimensional H-1 NMR spectroscopy (ROESY). The thermal behaviour has also been studied, providing complementary evidences of complex formation. (c) 2007 Elsevier Ltd. All rights reserved ...
The effect of cyclodextrin complexation on the solubility and photostability of nerolidol as pure compound and as main constituent of cabreuva essential oil
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The cholesterol-enriched membrane microdomains lipid rafts play a key role in cell activation by recruiting and excluding specific signalling components of cell-surface receptors upon receptor engagement. Our previous studies have demonstrated that the GPI (glycosylphosphatidylinositol)-linked uPAR [uPA (urokinase-type plasminogen activator) receptor], which can be found in lipid rafts and in non-raft fractions, can mediate the differentiation of VSMCs (vascular smooth muscle cells) towards a pathophysiological de-differentiated phenotype. However, the mechanism by which uPAR and its ligand uPA regulate VSMC phenotypic changes is not known. In the present study, we provide evidence that the molecular machinery of uPAR-mediated VSMC differentiation employs lipid rafts. We show that the disruption of rafts in VSMCs by membrane cholesterol depletion using MCD (methyl-β-cyclodextrin) or filipin leads to the up-regulation of uPAR and cell de-differentiation. uPAR silencing by means of interfering ...
The photochem. behavior of alkyldeoxybenzoins $PhCOCHPhCH_2CH_2R$ (R = H, Me, Et, hexyl, decyl) has been investigated in isotropic org. solvents, in aq. cyclodextrin solns., and bound to cyclodextrin in the solid state. Norrish type I and type II reactions occur in these media and the product distribution resulting from these primary processes are dependent on the medium. In org. solvents, type I and type II products are obtained in equal amts. In aq. cyclodextrin soln., type II products are formed in large excess. In the solid state, type II products constitute more than 90% of the product distribution. Ratios of products resulting from elimination and cyclization from the type II 1,4-diradical are also altered by the host cyclodextrin. Conformational and super-cage effects have been invoked to rationalize the dramatic alteration of the photobehavior of alkyldeoxybenzoins by cyclodextrin.. ...
United This invention relates to complexes, or inclusion compounds, to the preparation of the same, and to edible materials incorporating them. A major problem in the production of convenience foods lies in the difficulty of retaining in the food certain flavors and/or aromas, which, although they may be present in minor amounts, are none the less important. In fact, capturing and preserving for subsequent use the fresh delightful flavors and aromas of fresh edible juices, such as those of freshly picked fruits, leaves and vegetables, is virtually impossible with present-day commercial techniques. Dried leaves, blanched and frozen leaves, dehydrated and frozen fruits and fruit juices, and the like, have been and are used as substitutes, but they fall considerably short of providing the true freshness of the untreated natural material. These flavors and aromas, or notes, which are characteristic of many fresh foods, tend to escape, or undergo change, or be lost in some way, before the food is ...
In this paper, the formation of hydroxypropyl-β-cyclodextrin (HPCD) nanofibers in electrospinning and the adsorption of organic molecules on the HPCD nanofiber were studied. The properties of a polymer-like solution from the highly concentrated HPCD/N,N-dimethylformamide (DMF) solution revealed HPCD supramolecular aggregates formation. The entanglements of HPCD self-organized aggregates were one of the most important factors that significantly influenced fiber formation during cyclodextrin electrospinning. The HPCD self-organized aggregates entanglement concentration (C(e)) was investigated. Analyzing the dependence of specific viscosity (η(sp)) on concentration enabled the determination of the aggregates unentangled and entangled regimes for HPCD polymer-like solutions. The dynamic light scattering (DLS) measurements and the (1)H NMR spectra of the HPCD solutions confirmed the presence of considerable HPCD self-organized aggregates in high concentrated HPCD/DMF solutions due to the intermolecular
Cholesterol regulates numerous cellular processes. Depleting its synthesis in skeletal myofibers induces vacuolization and contraction impairment. However, little is known about how cholesterol reduction affects cardiomyocyte behavior. Here, we deplete cholesterol by incubating neonatal cardiomyocytes with methyl-beta-cyclodextrin. Traction force microscopy shows that lowering cholesterol increases the rate of cell contraction and generates defects in cell relaxation. Cholesterol depletion also increases membrane tension, Ca2+ spikes frequency and intracellular Ca2+ concentration. These changes can be correlated with modifications in caveolin-3 and L-Type Ca2+ channel distributions across the sarcolemma. Channel regulation is also compromised since cAMP-dependent PKA activity is enhanced, increasing the probability of L-Type Ca2+ channel opening events. Immunofluorescence reveals that cholesterol depletion abrogates sarcomeric organization, changing spacing and alignment of α-actinin bands due to
TY - JOUR. T1 - Absorption of ciprofloxacin and norfloxacin when administered as niosome-encapsulated inclusion complexes. AU - DSouza, S. A.. AU - Ray, J.. AU - Pandey, S.. AU - Udupa, N.. N1 - cited By 21. PY - 1997/2. Y1 - 1997/2. N2 - An attempt has been made to design suitable niosome-encapsulated drug delivery system for ciprofloxacin and norfloxacin. Encapsulation of ciprofloxacin and norfloxacin in niosomes was investigated and the nasal and intestinal absorption of the products studied. More than 80% of the drugs were successfully encapsulated to give products with sustained release characteristics. Encapsulation in niosomes also improved the stability of the antibacterial compounds. Although the systemic availability of these niosome-encapsulated antibacterial compounds was not increased after nasal administration, intestinal absorption was significantly higher in comparison with that of plain inclusion complexes.. AB - An attempt has been made to design suitable niosome-encapsulated ...
This work describes a new microfluidic device developed for the rapid screening of solubility diagrams. In several parallel channels, hundreds of nanolitre volume droplets of a given solution are first stored with a gradual variation in the solute concentration. Then, the application of a temperature gradien
The purpose of this study was to develop and evaluate a solid nonaqueous oral dosage form for a new hepatitis C drug, PG301029, which is insoluble and unstable in water. Hydroxypropyl-β-cyclodextrin...
GPCRs (G-protein-coupled receptors) play key roles in many cellular processes, and malfunction may lead to a range of pathologies, including psychiatric and neurological disorders. It is therefore not surprising that this group of receptors supplies a majority of the targets for pharmaceutical drug development. Despite their importance, the mechanisms that regulate their function and signalling still remain only partially understood. Recently, it has become evident that a subset of GPCRs is not homogeneously distributed in the plasma membrane, but localizes instead to specific membrane microdomains known as lipid rafts. Lipid rafts are characterized by their enrichment in cholesterol and sphingolipids, and have been suggested to serve as platforms for a range of cellular signalling complexes. In the present review, we will be discussing the effects of the lipid raft environment on trafficking, signalling and internalization of raft-associated GPCRs. ...
98458-74-3 - 6-Azobicyclo(3.2.1)octane, 1,3,3,6-tetramethyl-, hydriodide, compd. with beta-cyclodextrin - Similar structures search, synonyms, formulas, resource links, and other chemical information.
The basis for selective tumor targeting of our PDC compounds lies in differences between the plasma membranes of cancer cells as compared to those of most normal cells. Specifically, cancer cell membranes are highly enriched in lipid rafts. Lipid rafts are glycolipoprotein microdomains of the plasma membrane of cells that contain high concentrations of cholesterol and sphingolipids and serve to organize cell surface and intracellular signaling molecules. In vitro studies using fluorescent PDCs (CLR 1501 and CLR 1502) suggest that lipid rafts serve as portals of entry for PDCs. Furthermore, disruption of the lipid raft architecture significantly reduces the uptake of our PLEs into cancer cells. These experiments have also demonstrated the selective uptake and prolonged retention in cancer cells versus non-cancerous cells. This selectivity of our compounds for cancer cells is attributed to the high affinity of the PLE carrier for cholesterol and the abundance of cholesterol-rich lipid rafts in ...
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The inclusion complexes of imazapyr (IMA) with cucurbit[n]uril, CB[n] (n=6-8), have been investigated. Fluorescence spectroscopy, MALDI-TOF, and 1HNMR were used to investigate and characterize the inclusion complexation of IMA and CB[n] in solutions. Whereas the solid state complexes have been characterized by Fourier transform infrared spectroscopy (FTIR), and powder X-ray diffraction (PXRD). IMA was found to form 1:1 complexes with CB[n] with association constants ranging from 5.80×102-2.65×103. The guest molecule IMA was found to encapsulate into the larger cavities of CB[7] and CB[8], whereas with CB[6] the molecule remains outside the cavity ...
Fingerprint Dive into the research topics of A multimolecular signaling complex including PrP,sup,C,/sup, and LRP1 is strictly dependent on lipid rafts and is essential for the function of tissue plasminogen activator. Together they form a unique fingerprint. ...
Introduction: Cardiac overexpression of muscle specific caveolin-3 (Cav3) protects against ischemic/reperfusion injury through Akt kinase activation. However, the mechanism by which Cav3 regulates Akt activation remains unclear. We tested the hypothesis that Cav3 regulates Akt activity by directly modulating Akt activation loop phosphorylation (T308 in Akt1).. Methods and Results: Adult mouse cardiac myocytes were infected with an adeno-virus that expressed Cav3 and GFP (Ad-GFP/Cav3). In the absence of serum, Cav3 overexpression did not significantly promote T308 phosphorylation. However, when myocytes were stimulated with insulin for 15 minutes, Cav3 synergized with insulin to induce T308 phosphorylation (Ad-GFP-In: 6.9±1.3, Ad-GFP/Cav3-In: 13.7±0.8, p,0.01). The cholesterol-depleting lipid raft inhibitor, cyclodextrin (CyDex), prevented Cav3-mediated Akt activation, suggesting that Cav3 regulates Akt activation through lipid rafts. To test whether lipid rafts directly modulate Akt-T308 ...
The preparation and characterization of a supramolecular host-guest inclusion complex between a fluorescent indolizinyl-pyridinium salt and β-cyclodextrin is reported. The formation of the inclusion complex was investigated by ESI-MS experiments, transmission electron microscopy, Jobs plot investigations an
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3:Equlibrium constant and free energy change of inclusion complexes. SI.No. Inclusion complex of Compound. Equlibrium Constant(KT). ?G(kJ/mole). 1. I.C.K. 2. I.C.L. 3. I.C.M. 4. I.C.N. The data obtained from the ...
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A supramolecular system involving host-guest interactions between immobilized beta-cyclodextrin (beta-CD) cavities and adamantyl groups was evaluated for the pr
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We have recently described a novel cyclic tetrasaccharide of D-glucose (Cote & Biely, Eur. J. Biochem. 226:641-648, 1994), and would like to know if anyone in the carbohydrate chemistry community has any ideas for using it. We would especially like to collaborate with someone who would like to study its ability to complex small molecules or ions. It has practically no internal cavity, so would probably not form inclusion complexes similar to those of cyclodextrins. We can only provide milligram amounts at this time, and only if your idea is interesting and has scientific merit. Please contact me via e-mail or snail mail. Gregory Cote USDA/ARS/NCAUR 1815 N. University St. Peoria, IL 61604 E-mail: cotegl at ncaur1.ncaur.gov ...
I wonder if we need a place for XMRV specific treatments in the treatment secion. Cyclodextrin is currently being used to treat the twins with...
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en] PURPOSE: Ro 28-2653 (RO) is a synthetic inhibitor of matrix metalloproteinases (MMPs), which is potentially effective against bronchial remodeling. Given that this molecule has very poor aqueous solubility, different cyclodextrins (CDs) have been tested to increase its solubility. The aim of this study was to prepare and to characterize inclusion complexes between RO and CDs, in order to develop nebulizable solutions. METHODS: The complex formation was investigated by phase solubility studies. (1)H-NMR spectroscopy and molecular modeling studies were carried out to elucidate the structure of the inclusion complex between RO and dimethyl-beta-CD (DIMEB). Nebulizable solutions of RO were developed with CDs and a stability study was performed over 9 months. RESULTS: The phase solubility studies showed that beta-CD and its derivatives form a 1:2 complex with RO, whereas gamma-CD includes RO with a 1:1 stoichiometry and a weak stability constant. T-ROESY spectra showed that DIMEB is able to ...
In the present paper, the effect of β-cyclodextrin (β-CD) inclusion complexation on the solubility and enzymatic hydrolysis of naringin was investigated. The inclusion complex of naringin/β-CD at the molar ratio of 1:1 was obtained by the dropping method and was characterized by differential scanning calorimetry. The solubility of naringin complexes in water at 37 ± 0.1 °C was 15 times greater than that of free naringin. Snailase-involved hydrolysis conditions were tested for the bioconversion of naringin into naringenin using the univariate experimental design. Naringin can be transformed into naringenin by snailase-involved hydrolysis. The optimum conditions for enzymatic hydrolysis were determined as follows: pH 5.0, temperature 37 °C, ratio of snailase/substrate 0.8, substrate concentration 20 mg·mL−1, and reaction time 12 h. Under the optimum conditions, the transforming rate of naringenin from naringin for inclusion complexes and free naringin was 98.7% and 56.2% respectively, suggesting
This study reports the formation of solid vanillin/cyclodextrin inclusion complexes (vanillin/CD ICs) with the aim to enhance the thermal stability and sustained release of vanillin by inclusion complexation. The solid vanillin/CD ICs with three types of CDs (α-CD, β-CD, and γ-CD) were prepared using the freeze-drying method; in addition, a coprecipitation method was also used in the case of γ-CD. The presence of vanillin in CD ICs was confirmed by FTIR and (1)H NMR studies. Moreover, (1)H NMR study elucidated that the complexation stoichiometry for both vanillin/β-CD IC and vanillin/γ-CD IC was a 1:1 molar ratio, whereas it was 0.625:1 for vanillin/α-CD IC. XRD studies have shown channel-type arrangement for CD molecules, and no diffraction peak for free vanillin was observed for vanillin/β-CD IC and vanillin/γ-CD IC, indicating that complete inclusion complexation was successfully achieved for these CD ICs. In the case of vanillin/α-CD IC, the sample was mostly amorphous and some uncomplexed
Cyclodextrin complex is suspended in polyalkylene glycol carrier material that does not displace the included material. The preferred perfume/cyclodextrin complexes, either alone or admixed with solvent (e.g., water), are preferably suspended in the carrier and then incorporated into solid, dryer-activated, fabric treatment (conditioning) compositions, preferably containing fabric softeners, more preferably cationic and/or nonionic fabric softeners. The perfume complexes provide fabrics with perfume benefits when they are rewetted after drying. Volatile perfume materials, including those materials that are commonly associated with freshness can be applied to the fabrics in an effective way.
DESCRIPTION (provided by applicant): C. perfringens epsilon-toxin (ETX) is a potential biological weapon included in the list of category B priority agents. The overall goal of this proposal is to identify and perform in vivo testing of new inhibitors of E TX using a novel approach for the inactivation of pore-forming toxins developed at Innovative Biologics, Inc. It is based on the blocking of the target pore with molecules having the same symmetry as the pore itself. Results from our SBIR Phase I project d emonstrated that beta-cyclodextrin derivatives designed to block the transmembrane channel formed by epsilon-toxin can inhibit its cytotoxicity at low micromolar concentrations. Based on the successful completion of this feasibility study, we propose to de sign, synthesize and screen a library of beta-cyclodextrin derivatives for inhibitors of epsilon-toxins activity and test selected lead compounds in mice. The specific aims of this Phase II study are: (1) Optimize the assay for testing ...
Search and download thousands of Swedish university dissertations (essays). Full text. Free. Dissertation: NMR Studies of Inclusion Compounds.
The solubility of natural cyclodextrins is very poor and initially this prevented cyclodextrins from becoming effective complexing agents. In the late 1960s, it was discovered that chemical substitutions at the 2-, 3-, and 6-hydroxyl sites would greatly increase solubility. The degree of chemical substitution and the nature of the groups used for substitution determine the final maximum concentration of cyclodextrin in an aqueous medium. Most chemically modified cyclodextrins are able to achieve a 50% (w/v) concentration in water.. Cavity size is the major determinant as to which cyclodextrin is used in complexation. Fit is critical to achieving good incorporation of cyclodextrins. α-Cyclodextrins have small cavities that are not capable of accepting many molecules. γ-Cyclodextrins have much larger cavities than many molecules to be incorporated, and cyclodextrin hydrophobic charges cannot effectively interact to facilitate complexation. The cavity diameter of β-cyclodextrins has been ...
51166-71-3 - QGKBSGBYSPTPKJ-UZMKXNTCSA-N - Heptakis(2,6-O-dimethyl)beta-cyclodextrin - Similar structures search, synonyms, formulas, resource links, and other chemical information.
where [P]0 denotes the initial concentration of IBU and [CD]0 denotes that of CDs. F and F0 are the fluorescence intensities of IBU in the presence and absence of CDs, respectively. K is a formation constant, k is the instrument constant and Q is the fluorescence quantum yield of the inclusion complex. If the curve of 1/(F-F0) versus 1/[CD]0 exhibits good linearity, it implies that inclusion complexes with a stoichiometry of 1:1 are formed. B. Effect of the types of CDs β-CDs have the hydrophilic outer surface and a hydrophobic internal cavity. The inclusion interaction of β-CDs and the guest molecules is affected by the size of the internal cavity and hydrophilic, hydrophobic characters of the host. It is generally believed that dipole-dipole, electrostatic, van der Walls forces, hydrogen bonding, hydrophobic interaction, and the release of distortion energy of CD ring upon guest binding cooperatively govern the stability of an inclusion complex. The effect of HP-β-CD concentration on the ...
TY - JOUR. T1 - Molecular and Crystal Structure of the 1:1 Complex of Adamantanone with β-Cyclodextrin. AU - Sánchez-Ruiz, X.. AU - Alvarez-Larena, A.. AU - Jaime, C.. AU - Piniella, J. F.. AU - Redondo, J.. AU - Virgili, A.. AU - Sánchez-Ferrando, F.. AU - Germain, G.. AU - Baert, F.. PY - 1999/12/1. Y1 - 1999/12/1. N2 - A 1:1 inclusion complex of adamantanone with β-cyclodextrin (β-CyD) has been crystallized and its structure determined by single crystal X-ray methods. This complex crystallizes in space group P2 1, Z=4, Dc = 1.25 g/cm 3, a = 15.428 (5), b = 32.545 (5), c = 15.437 (5) Å, β = 103.56(2)°. The structure was solved by a Patterson search and was refined on F 2 for all reflections to a final value of R(F) = 0.116 for 6306 reflections with I , 2σ(I). The β-CyD molecules follows the screw channel mode of packing. Guests are disordered in three well-defined regions inside the CyD cavities, while water molecules surround the CyD.. AB - A 1:1 inclusion complex of adamantanone ...
Piroxicam-Beta-Cyclodextrin is made by enwrapping medical piroxicam and medical beta-cyclodextrin in a certain inverse proportion with a unique art. This inclusion compound has less odor, more stability and more stable medicine releasing speed than the si
Equilibrium constants and standard enthalpies have been measured calorimetrically for the formation of complexes of α-and β-cyclodextrins with substituted phenols in aqueous solutions at 298.15 K. The study includes variation of the size and shape of the phenol, the size and degree of methylation of the cyclodextrin, and the effects of pH and ionic strength. Substituent effects were measured for p-chloro-, p-bromo-, p-methyl-, p-hydroxy-, p-nitro- and m-nitrophenols. The effects of ionization were studied with m- and p-nitrophenolate ions. The effects of methyl substitutions of β-cyclodextrin were investigated with nitrophenol and nitrophenolate ions complexing with heptakis(2,6-di-O-methyl)-β-cyclodextrin and heptakis(2,3,6-tri-O-methyl)-β-cyclodextrin. All of the effects studied show a substantial amount of entropic-enthalpic compensation, such that free energy effects are relatively small in comparison to enthalpic and/or entropie effects, but there was no simple relationship between the
Our understanding of the structure of the plasma membrane of mammalian cells was based on the Singer-Nicolson fluid mosaic membrane model, where all the constituents of the membrane move freely ( Singer and Nicolson, 1972). In recent years the Singer-Nicolson membrane model has been changed by demonstrations of lateral heterogeneities, patches and domains in the plasma membrane ( Edidin, 1996; Jacobson et al., 1995; Kusumi and Sako, 1996). These lateral heterogeneities of the plasma membrane, often called `lipid rafts, are emerging as sites of cellular signalling.. In this study we decided to investigate the significance of raft formation in LPS-mediated cellular activation. Using biochemical techniques in order to isolate lipid rafts on the basis of their insolubility in Triton X-100 and low buoyant density centrifugation, we isolated lipid rafts before and after LPS stimulation. Certain molecules involved in the innate recognition of bacteria, such as CD14 and hsp70 and 90, were ...
CAS No. 128446-35-5 Model Number SGONEK-beta cyclodextrin Purity 99% Appearance White Powder Grade Pharmaceutcial Grade Siez 100% Pass 80 Mesh Sample 1-5g free Test Method HPLC UV Package 1KG/Bag,5kg/bag,25kg/bag Certificate ISO/FDA/S G S/M
The precipitation of metal hydroxides such as for example Al(OH)3), Fe(OH)^3 and Zn(OH)2 is the most widely used chemical precipitation process in hydrometallurgy. The precipitation is achieved by increasing pH in the solution by the addition of alkaline reagents such as limestone (CaCO3), slaked lime (Ca(OH)2), sodium hydroxide (NaOH) or ammonia (NH3). To give an indication on the conditions needed to separate different elements by hydroxide precipitation solubility diagrams of metal hydroxides are helpful. In figure ?? a solubility diagram with some of the common metal hydroxides is shown. ...
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Flotillins are highly homologous proteins (known as flotillin-1 and flotillin-2, or reggie-2 and reggie-1, respectively) that localize to membrane rafts (specific cholesterol-rich microdomains in cellular membranes), and are associated with various signaling pathways, cell adhesion, membrane trafficking and axonal growth.. Flotillins are strongly conserved across many species, found in bacteria, plants, fungi and all mammals, and show ubiquitous tissue expression. They are widely used as biomarkers for membrane rafts and show dynamic subcellular distribution. Significantly, flotillins are also frequently overexpressed in cancer.. In Flotillins in Receptor Tyrosine Kinase Signaling and Cancer, Banning et al., provide a timely review that details recent studies offering novel insights into flotillin involvement in receptor tyrosine kinase and mitogen activated protein (MAP) kinase signaling, cancer and metastasis. Further, the authors provide a thorough overview of data that correlates ...
3804 Introduction: Inadequate tumor vascularization and/or anti-vascular effects of cancer chemotherapy contribute to anticancer drugs failure. We pursued physiological drug resistance of cancer chemotherapy in mouse breast cancer models using magnetic resonance imaging (MRI) and spectroscopic imaging (MRSI). Methods: All animal experiments were conducted according to the institutional guidelines. Anesthetized SCID mice with orthotopic MCF-7 breast cancer were immobilized in the probe and maintained under gas anesthesia (Isoflurane 0.5%, 1 l/min). 13C-Labeled-temozolomide ([13C]TMZ) or temozolomide (TMZ: Temodar® capsule), alkylating agent, was used as a model drug. Two hundred microliter of [13C]TMZ (50 mM)/dimethyl-β-cyclodextrin (100 mM) inclusion complex was infused into the mouse via an i.p. catheter. Three-dimensional indirect 1H/13C MRSI was performed with an 8x8x8 matrix for a 16 mm isotropic field of view. During 3D map acquisition, a total of 400 μl of inclusion complex was ...
Branched cyclodextrins are produced by the pyrolysis of cyclodextrins. The temperature range is 135 C. to 220 C. using equipment suitable for making British gum and other starch dextrins.
New porous, unitary freeze-dried pharmaceutical form, of homogeneous appearance, consisting of:a) an inclusion compound comprising:one or optionally more active substances,a predetermined quantity of cyclodextrin,optionally an additive facilitating inclusion,b) at least one substance chosen from:diluents,binders; andc) optionally one or more additives.
This paper showed the synthesis of biocompatible micelles from linear-hyperbranched supramolecular amphiphiles which were formed by inclusion complexation between HPHEEP-MV, PLA-IPA and CB ...
Despite its use in commercially available drugs such as intravenous voriconazole, there is little known in the medical literature about the clinical pharmacology of the solubilizing agent, sulfobutylether-beta-cyclodextrin (SBECD). This paper summarizes all known data on SBECD pharmacokinetics and s …
Cyclodextrin News, cyclodextrin, dimethyl-beta-cyclodextrin, cholesterol, conversion, biotransformation, solubility, vaccine product inhibition Bortadella
Blood clot in the left leg, have been on warfarin 7 months, leg calf still swells up, and wondering if the medication warfarin removes cholesterol as well.
The rotation of close binary system components is investigated. The principal physical characteristics as well as the equatorial rotational velocities and
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ß-Cyclodextrin, base (BCD) for biochemistry & microbiology datasheet and description hight quality product and Backed by our Guarantee
We study βLAP and its derivative nor-β-Lapachone (NβL) complexes with 2-hydroxypropyl-β-cyclodextrin to increase the solubility and bioavail...
There is disclosed a rubber composition comprising: (A) 100 parts by weight of at least one rubber containing olefinic unsaturation; and (B) 1.5 to 50 phr of a cyclodextrin compound.
A61K47/69-Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the conjugate being characterised by physical or galenical forms, e.g. emulsion, particle, inclusion complex, stent or kit ...
Cannizzo, C., Adonopulos, A., Solly, E., Ridiandries, A., Vanags, L., Mulangala, J., Yuen, S., Tsatralis, T., Henriquez, R., Robertson, S., Ng, M., Lam, M., Bursill, C., Tan, J., et al (2018). VEGFR2 is activated by high-density lipoproteins and plays a key role in the proangiogenic action of HDL in ischemia. FASEB Journal, 32(6), 2911-2922. [More Information] ...
Lipid rafts, microdomain heterogeneity and inter-organelle contacts: impacts on membrane preparation for proteomic studies.: In recent years, there has been con
BREAKING UP A RAFT IN THE GEORGIAN BAY, WITH NINETEEN MEN ON IT. Last Monday night Mr. COATSWORTH, of Toronto, and 18 of his men, had a narrow and almost miraculous escape from destruction by a breaking up of a raft on which they were floating on the Georgian Bay ...
Declaration : These statements have not been evaluated by the Food and Drugs Administration. These products are not intended to diagnose, treat, cure, or prevent any disease. See our terms and conditions for more information. ...
The active ingredient in the root was synthesized and encapsulated with beta-cyclodextrins. The roots were also subjected to ...
Depletion of cholesterol with methyl-beta cyclodextrin disrupts palmitate mediated localization.[citation needed] Levental, I; ...
developed a catalyst based on a beta-cyclodextrin carrying two imidazole groups. This cyclodextrin catalytic system mimics ... Cyclodextrins have rigid ring structure, hydrophilic surface, and hydrophobic cavity on the inside; therefore, they are capable ... From the early 1970s, cyclodextrins have been extensively studied for its encapsulation properties and used as binding sites in ... Self-assembled molecules have an advantage over crown ether and cyclodextrin in that they can capture significant larger ...
Hurley, JC; Volz, SA; Johnston, JJ (1999). "Stabilization of the avicide 3-chloro-p-toluidine as the beta-cyclodextrin adduct ...
The active ingredient in several Febreze products is hydroxypropyl beta-cyclodextrin (HPβCD). The molecule traps and binds ... The use of cyclodextrin as a sprayable odor absorber was patented by Procter & Gamble. The products include additional ... Uncomplexed cyclodextrin solutions for odor control on inanimate surfaces. US Pat. No. 5,714,137. Filed 1994; assigned 1998. ... Cyclodextrin". Procter&Gamble. 2005. *P&G. (2014). Febreze FAQ (in japanese). Retrieved: http://www.febreze.jp/Faq.aspx?id=4442 ...
Butchbach ME, Guo H, Lin CL (2003). "Methyl-beta-cyclodextrin but not retinoic acid reduces EAAT3-mediated glutamate uptake and ...
... beta.-cyclodextrin". Journal of the American Chemical Society. 105 (5): 1390-91. doi:10.1021/ja00343a063. "Anthony W. Czarnik, ...
"Synthesis and inclusion ability of a bis-beta-cyclodextrin pseudo-cryptand towards Busulfan anticancer agent". Tetrahedron. 63 ... Porwanski S, Florence DC, Menuel S, Joly JP, Bulach V, Marsura A (2009). "Bis-beta-cyclodextrinyl- and bis-cellobiosyl- ... The molecular recognition of ureido-cyclodextrin with busulfan was investigated. The formation of complexes was observed with ...
Only unbound maropitant causes pain - it is normally formulated with beta-cyclodextrin to increase solubility; at cooler ... temperatures, more of the maropitant remains bound to the cyclodextrin, leaving less maropitant unbound. While there is no pain ...
... with dimethyl-beta-cyclodextrin". Chem. Pharm. Bull. 45 (2): 378-83. doi:10.1248/cpb.45.378. PMID 9118452. Soell M, Feki A, ...
"Sublingual administration of Delta9-tetrahydrocannabinol/beta-cyclodextrin complex increases the bioavailability of Delta9- ...
Scalia S, Simeoni S, Barbieri A, Sostero S (November 2002). "Influence of hydroxypropyl-beta-cyclodextrin on photo-induced free ... Formulations of avobenzone with hydroxypropyl-beta-cyclodextrin have shown significant reduction in photo-induced degradation, ... Yang J, Wiley C, Godwin D, Felton L (June 2008). "Influence of hydroxypropyl-β-cyclodextrin on transdermal penetration and ... Complexing avobenzone with cyclodextrins may also increase its photostability. ...
Due to its immunomodulatory, iron chelating and antioxidant properties, this herb has the potential to be used in beta- ... It has been also reported that silymarin inclusion complex with β-cyclodextrin is much more soluble than silymarin itself. ... "Solid state mechanochemical activation of Silybum marianum dry extract with betacyclodextrins: Characterization and ...
... the FDA granted Hydroxypropyl-beta-cyclodextrin orphan drug status and designated HPbCD cyclodextrin as a potential treatment ... Ward S, O'Donnell P, Fernandez S, Vite CH (July 2010). "2-hydroxypropyl-beta-cyclodextrin raises hearing threshold in normal ... hydroxypropyl-beta-cyclodextrin (HPbCD) was approved under compassionate use by the U.S. Food and Drug Administration (FDA) to ... cyclodextrin therapy. On January 23, 2013, a formal clinical trial to evaluate HPβCD cyclodextrin therapy as a treatment for ...
... beta-cyclodextrin) dendrimeric tetrapod as a potential gene delivery (DNA and siRNA) system. Study of cellular siRNA ... Chemical-based transfection can be divided into several kinds: cyclodextrin, polymers, liposomes, or nanoparticles (with or ...
Derived from this the derivatization of β-cyclodextrin to sulfobutyl ether-beta-cyclodextrin (SBECD) is by now an important ... Sulfobutyl ether-beta-cyclodextrin is a water-soluble inclusion compound for the solubilization and stabilization of sparsely ... Sulfobutyl ether-beta-cyclodextrin also finds a wide range of applications as an inert vehicle for drug delivery (the drugs ... "Evaluation of a sulfobutyl ether beta-cyclodextrin as a solubilizing/stabilizing agent for several drugs", Drug Dev. Ind. Pharm ...
... as well as the delivery of resiquimod via nanoparticles formed from beta-cyclodextrin. In July 2020, it was discovered that a ...
At the moment, apiegnin and beta-cyclodextrin are thought to alleviate S.aureus pneumonia, whereas the antibodies of anti alpha ... Maheswaran SK, Lindorfer RK (November 1967). "Staphylococcal beta-hemolysin. II. Phospholipase C activity of purified beta- ... Compared to beta-hemolysin, it has a higher affinity for phosphocholines with short saturated acyl chains, especially if they ...
The role of cholesterol in endocytosis of these types can be investigated by using methyl beta cyclodextrin (MβCD) to remove ...
The 3D structure of a complex of soybean beta-amylase with an inhibitor (alpha-cyclodextrin) has been determined to 3.0A ... while the smaller is formed from two long loops extending from the beta-3 and beta-4 strands of the (beta alpha)8 fold. The ... Beta-amylase is present in certain bacteria as well as in plants. Three highly conserved sequence regions are found in all ... Beta-amylase is an enzyme that hydrolyzes 1,4-alpha-glucosidic linkages in starch-type polysaccharide substrates so as to ...
... cyclodextrins MeSH D09.698.365.855.400.375.222 - alpha-cyclodextrins MeSH D09.698.365.855.400.375.333 - beta-cyclodextrins MeSH ... beta-glucans MeSH D09.698.365.089.500 - lentinan MeSH D09.698.365.089.625 - sizofiran MeSH D09.698.365.089.750 - zymosan MeSH ... D09.698.365.855.400.375.444 - gamma-cyclodextrins MeSH D09.698.365.855.500 - hetastarch MeSH D09.698.365.855.750 - inulin MeSH ...
MeSH D04.345.051.500 - crown ethers MeSH D04.345.103.222 - alpha-cyclodextrins MeSH D04.345.103.333 - beta-cyclodextrins MeSH ... D04.345.103.444 - gamma-cyclodextrins MeSH D04.345.241.308 - crown ethers MeSH D04.345.295.500 - maytansine MeSH D04.345. ...
... which in turn consists of alternating subunits of beta-cyclodextrin and polyethylene glycol (PEG). The CRLX101 nanoparticle is ... The agent represents a nanoparticle conjugate that consists of a drug delivery molecule, namely a cyclodextrin-based polymer ( ... a cyclodextrin-containing polymer-camptothecin nanopharmaceutical in patients with advanced solid tumor malignancies". Invest. ...
... artificial sweetener beta-cyclodextrin - emulsifier Lemongrass (Cymbopogon citratus, C. flexuosus, and other species) - Damiana ... in Earl Grey tea Beta-apo-8'-carotenal (C 30) - color Beta-apo-8'-carotenic acid ethyl ester - color Betanin - color (red) ... Carotenes - color Alpha-carotene - color Beta-carotene - color Gamma-carotene - color Carrageenan - thickener, vegetable gum, ...
... from serum with satisfactory yield and used Beta-cyclodextrin as a competitor to displace IgG from the matrix. This largely ... "Salt-independent hydrophobic displacement chromatography for antibody purification using cyclodextrin as supermolecular ...
For example, the Joseph Pitha study showed that when testosterone was complexed with hydroxy-propyl-beta-cyclodextrin (HPBCD), ... Cyclodextrins are used to make pharmaceutical solutions by capturing hydrophobic molecules as guest hosts. Because inclusion ... Stuenkel CA, Dudley RE, Yen SS (May 1991). "Sublingual Administration of Testosterone-Hydroxypropyl-β-Cyclodextrin Inclusion ... and γ-cyclodextrins". International Journal of Pharmaceutics. 179 (1): 65-71. doi:10.1016/S0378-5173(98)00382-2. PMID 10053203 ...
GRN 000155, alpha-cyclodextrin;GRAS Notice No. GRN 000074, beta-cyclodextrin;GRAS Notice No. GRN 000046, gamma-cyclodextrin ... beta)-cyclodextrin: 7 glucose subunits γ (gamma)-cyclodextrin: 8 glucose subunits Cyclodextrins are ingredients in more than 30 ... Illustrative, α-cyclodextrin form second-sphere coordination complex with tetrabromoaurate anion ([AuBr4]-). Beta-cyclodextrin ... Alpha-, beta-, and gamma-cyclodextrin are all generally recognized as safe by the U.S. FDA. They have been applied for delivery ...
α-Cyclodextrin is a hexasaccharide derived from glucose. It is related to the β- (beta) and γ- (gamma) cyclodextrins, which ... All cyclodextrins are white, water-soluble solids with minimal toxicity. Cyclodextrins tend to bind other molecules in their ... Then cyclodextrin glycosyltransferase (CGTase) is added for enzymatic conversion. CGTases produce diverse cyclodextrins. The ... The exterior surface of cyclodextrins is somewhat hydrophilic whereas the interior core is hydrophobic. α-Cyclodextrin is ...
... alpha-cyclodextrin glucanotransferase, alpha-cyclodextrin glycosyltransferase, beta-cyclodextrin glucanotransferase, beta- ... cyclodextrin glycosyltransferase, gamma-cyclodextrin glycosyltransferase, cyclodextrin glycosyltransferase, cyclomaltodextrin ... Rational design of cyclodextrin glycosyltransferase from Bacillus circulans strain 251 to increase alpha-cyclodextrin ... The coupling reaction can be easily described as the reverse process of cyclization: the enzyme cleaves a cyclodextrin to ...
The role of cholesterol in such endocytosis can be investigated by using methyl beta cyclodextrin (MβCD) to remove cholesterol ...
beta-cyclodextrin - emülgatör. *Lemongrass. ÇDüzenle. *Kamelya yağı/ Daha çok güney Çin'de pişirme yağı olarak kullanılır. ...
Cyclodextrin NP Solid tumours I Active Calando Pharmaceuticals NCT00689065 TD101 K6a (N171K mutation) Naked siRNA Pachyonychia ... Studies in cells and in mouse have shown that specifically targeting Amyloid beta-producing genes (e.g. BACE1 and APP) by RNAi ...
... and complexation with cyclodextrins; among the latter, the complex with β-cyclodextrin has been found to have highly increased ... Inhibition by statins and beta blockers[edit]. CoQ10 shares a biosynthetic pathway with cholesterol. The synthesis of an ... Inhibition of coenzyme Q10-enzymes by clinically used adrenergic blockers of beta-receptors". Research Communications in ... "A Study on the Bioavailability of a Novel Sustained-Release Coenzyme Q10-β-Cyclodextrin Complex". Integrative Medicine. 9 (1). ...
An oral formulation of the drug with cyclodextrin was developed[29]:16 and Ivax and Serono, and then Merck KGaA conducted ...
Cyclodextrin, which may be produced from starch by means of enzymatic conversion ... Beta glucan. *Disodium wheat germamido PEG-2-sulfosuccinate. *Fermented grain extract. *AMP-Isostearoyl ...
It is not known whether reduction of beta-amyloid is a feasible way of treating Alzheimer's, as an anti-beta-amyloid vaccine ... A formulation of imatinib with a cyclodextrin (Captisol) as a carrier to overcome the blood-brain barrier is also currently[ ... The patent application[50][64] claimed the final form of Gleevec (the beta crystalline form of imatinib mesylate).[65]:3 In ... In July 1997, Novartis filed a new patent application in Switzerland on the beta crystalline form of imatinib mesylate (the ...
Penicillin and related beta lactams work by inhibiting DD-transpeptidase enzyme that is required by bacteria to cross link ... Examples of enzymes identified to date include amylases, pullulanases, cyclodextrin glycosyltransferases, cellulases, xylanases ...
"Synthesis and inclusion ability of a bis-beta-cyclodextrin pseudo-cryptand towards Busulfan anticancer agent". Tetrahedron. 63 ... The molecular recognition of ureido-cyclodextrin with busulfan was investigated.[9] The formation of complexes was observed ... Porwanski S, Florence DC, Menuel S, Joly JP, Bulach V, Marsura A (2009). "Bis-beta-cyclodextrinyl- and bis-cellobiosyl- ...
Statiner, beta-blokkere og CoQ10[redigér , redigér wikikode]. CoQ10 og kolesterol stammer fra samme biokemiske proces (the ... Dog viser ingen studier til dato, om det vandopløselige CoQ10-ß-Cyclodextrin-kompleks når frem til relevante væv, og hvorledes ... Inhibition of coenzyme Q10-enzymes by clinically used adrenergic blockers of beta-receptors". Research communications in ... ß-Cyclodextrin-molekyler [17][34][35]. Zmitek[36] arbejder hen imod at gøre CoQ10 så vandopløseligt, at stoffet kan tilsættes ...
Main article: Cyclodextrin. The cyclical dextrins are known as cyclodextrins. They are formed by enzymatic degradation of ... Beta) Limit dextrin is the remaining polymer produced by enzymatic hydrolysis of amylopectin with beta amylase, which cannot ... starch by certain bacteria, for example, Paenibacillus macerans (Bacillus macerans). Cyclodextrins have toroidal structures ...
Apropos of the study of the hemostatic activity in prostatectomy of a new molecule: beta-naphthoquinone monosemicarbazone ( ... Complexes and Their Supramolecular Assemblies with β-Cyclodextrin". Inorg Chem. 43 (11): 3521-3527. doi:10.1021/ic0352250. PMID ...
... beta _{pq}} , is defined as β p q = [ H p G q ] [ H ] p [ G ] q {\displaystyle \beta _{pq}={\frac {[H_{p}G_{q}]}{[H]^{p}[G]^{q ... and Molecular Dynamics of Cyclodextrins with a Non-ionic Surfactant". Journal of Physical Chemistry B. 111 (17): 4383-92. doi: ... T H = [ H ] + ∑ p β p q [ H ] p [ G ] q {\displaystyle T_{H}=[H]+\sum p\beta _{pq}[H]^{p}[G]^{q}} T G = [ G ] + ∑ q β p q [ H ... beta _{pq}[H]^{p}[G]^{q}} . The relationship between a species' concentration and the measured quantity is specific for the ...
... cyclodextrin glucanotransferase (CGT), and branching enzyme. Shown by x-ray crystallography, glycogen branching enzyme has four ... insights of N-terminal beta-sandwich in substrate specificity and enzymatic activity". The Journal of Biological Chemistry. 285 ...
Water Molecule in Hydrophobic Surroundings: Structure of alpha-Cyclodextrin-Hexahydrate (C6H10O5)6·6H2O, Nature, 1972 Circular ... Nature 1993 Crystal structure of beta-D-cellotetraose hemihydrate with implications for the structure of cellulose II, Science ...
Jambhekar SS, Breen P (February 2016). "Cyclodextrins in pharmaceutical formulations I: structure and physicochemical ... Highly enantioselective Ru catalysts for asymmetric hydrogenation of beta-aryl ketoesters and their immobilization in room- ...
1 October 2010). "Cyclodextrin-complexed curcumin exhibits anti-inflammatory and antiproliferative activities superior to those ... where his team characterized the cytokines TNF-alpha and TNF-beta. Aggarwal was Chief of the Cytokine Research Section, ...
... also known as an alpha/beta barrel), an alpha/beta protein fold structure consisting of eight parallel beta-strands connected ... "Complex structures of Thermoactinomyces vulgaris R-47 alpha-amylase 2 with acarbose and cyclodextrins demonstrate the multiple ... beta-amylase, and alpha-D-glucosidase) and only achieves a 40% yield of isomaltooligosaccharides from starch. When immobilized ...
... family 1.B.66 Putative beta-barrel porin-2 (BBP2) family 1.B.67 Putative beta barrel porin-4 (BBP4) family 1.B.68 Putative beta ... family 1.B.26 Cyclodextrin porin (CDP) family 1.B.31 Campylobacter jejuni major outer membrane oorin (MomP) family 1.B.32 ...
Beta cyclodextrins bind and remove A2E from RPE. Marcelo M. Nociari, Guillermo L. Lehmann, Andres E. Perez Bay, Roxana A. Radu ... Beta cyclodextrins bind and remove A2E from RPE. Marcelo M. Nociari, Guillermo L. Lehmann, Andres E. Perez Bay, Roxana A. Radu ... Beta cyclodextrins bind, stabilize, and remove lipofuscin bisretinoids from retinal pigment epithelium. Marcelo M. Nociari, ... Here we report that a family of modified cyclic oligosaccharides, beta cyclodextrins (β-CDs), formed by seven d-glucose units, ...
Looking for TCI AMERICAS Trimethyl-Beta-Cyclodextrin, 1g (19XC33)? Graingers got your back. Price:$159.65. Easy ordering & ...
A wide variety of beta-cyclodextrin options are available to you, such as food grade, cosmetic grade, and tech grade. ... Alibaba.com offers 5,826 beta-cyclodextrin products. About 48% of these are auxiliaries and other medicinal chemicals, 26% are ... sulfobutyl ether beta-cyclodextrin sulfobutylether beta-cyclodextrin gmp beta-cyclodextrin glucose beta-cyclodextrin beta- ... beta-cyclodextrin top purity beta-cyclodextrin high purity beta-cyclodextrin top quality beta-cyclodextrin beta-cyclodextrin ...
See Also: Toxicological Abbreviations Beta-Cyclodextrin (WHO Food Additives Series 32) beta-CYCLODEXTRIN (JECFA Evaluation) ... HRC (1994b). Beta-cyclodextrin: Toxicity to dogs by repeated dietary administration for 52 weeks. Unpublished report no. ROQ 3/ ... HRC (1994a). Beta-cyclodextrin: Toxicity to rats by dietary administration for 52 weeks. Unpublished report no. ROQ 4/931090 ... Pharmakon Europe (1994). Beta-cyclodextrin: Three generation oral (dietary administration) reproduction toxicity study in the ...
See Also: Toxicological Abbreviations beta-Cyclodextrin (WHO Food Additives Series 35) beta-CYCLODEXTRIN (JECFA Evaluation) ... SEBESTY N, G. (1980) The acute LD50 values of beta-cyclodextrin in CFY rats, CFLP mice and mongrel dogs. Report of Chinoin ... SMITH, T.G., COX, R.A., BUIST, D.P., CROOK, D., HADLEY, J.C. & C. GOPINATH (1992) Beta-cyclodextrin toxicity to dogs by ... BUSCH, B., BIESEMEIER, J.A. & BECCI, P.J. (1985) Acute inhalation toxicity study of beta cyclodextrin in Sprague Dawley rats. ...
Browse fuzing.com to find beta-cyclodextrin sellers, suppliers, wholesalers, companies, manufacturers, exporters, factories. ... beta-cyclodextrin. You May Also Be Interested In: beta cyclodextrin cover up cyclodextrin liquid food spice essence Beta- ... cyclodextrin as a new medicine anxiliary materical, is mainly used to strengthen the stability of the medicine, prevent it from ...
Roquette is a pioneer in the industrial development of Betacyclodextrins, bio-transformation of starch. , Roquette ... Hydroxypropyl BetacycloDextrins KLEPTOSE®. KLEPTOSE® HP and HPB, Roquettes Hydroxypropyl betacyclodextrins (HPBCD), are highly ... Roquette is a pioneer in the industrial development of Betacyclodextrins. These employ the bio-transformation of starch that ...
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Beta-cyclodextrins (β-cds) are particularly efficient sterol acceptors, apparently because the size of their inner hydrophobic ... Chlorhexidine (Cx) augmented with beta-cyclodextrin (β-cd) inclusion compounds, termed Cx:β-cd complexes, have been developed ... Hence, in order to reduce the toxicity caused by high concentrations of Cx, chlorhexidine:beta-cyclodextrin (Cx:β-cd) complexes ... 9. Cortés, M.E.; Sinisterra, R.D.; Ávila-Campos, M.J.; Tortamano, N.; Rocha, R.G. (2001). The chlorhexidine:beta-cyclodextrin ...
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... sulfobutylether-beta-cyclodextrin (SBECD). This paper summarizes all known data on SBECD pharmacokinetics and s … ... Review of the basic and clinical pharmacology of sulfobutylether-beta-cyclodextrin (SBECD) J Pharm Sci. 2010 Aug;99(8):3291-301 ... sulfobutylether-beta-cyclodextrin (SBECD). This paper summarizes all known data on SBECD pharmacokinetics and safety. In ... beta-Cyclodextrins / adverse effects * beta-Cyclodextrins / chemistry* * beta-Cyclodextrins / pharmacokinetics * beta- ...
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Keywords: hydrogel microparticles, rosuvastatin calcium, polymerization, β-cyclodextrin solubility ... calcium by developing β-cyclodextrin-g-poly(2-acrylamido-2-methylpropane sulfonic acid [AMPS]) hydrogel microparticles through ... Development of beta-cyclodextrin-based hydrogel microparticles for solubility enhancement of rosuvastatin: an in vitro and in ... Development of β-cyclodextrin-based hydrogel microparticles for solubility enhancement of rosuvastatin: an in vitro and in vivo ...
where to buy 182410-00-0(Beta-cyclodextrin Sulfobutyl Ether Sodium).Also offer free database of 182410-00-0(Beta-cyclodextrin ... Beta-cyclodextrin Sulfobutyl Ether Sodium) for price inquiry. ... beta.-Cyclodextrin, sulfobutyl ethers, sodium salts. Min.Order ... beta.-Cyclodextrin, sulfobutyl ethers, sodium salts Basic information Product Name: .beta.-Cyclodextrin, sulfobutyl ethers, ... 1.Sodium Sulphobutylether-β-Cyclodextrin is an important modified production of Beta-Cyclodextrin. 2.Sodium Sulphobutylether- ...
... characterization and in vivo evaluation of formulation of baicalein with hydroxypropyl-beta-cyclodextrin. Download Prime PubMed ... The interaction of 2-hydroxypropyl-beta-cyclodextrin (HP-beta-CD) and a poorly water-soluble flavonoid, baicalein (Ba), ... The interaction of 2-hydroxypropyl-beta-cyclodextrin (HP-beta-CD) and a poorly water-soluble flavonoid, baicalein (Ba), ... 2-Hydroxypropyl-beta-cyclodextrinAnimalsArea Under CurveBiological AvailabilityCalorimetry, Differential ScanningChemistry, ...
Since beta-cyclodextrin is. Answer: Since beta-cyclodextrin is complexed with glipizide for better dissolution, there is ... Pharmaceutical Information » Question Category » Pharma Industry » effect of beta cyclodextrin on assay of glipizide tablets. ... Hence there is a chance of interaction of cyclodextrin with glipizide and it depends on the selected analytical technique. ...
Beta Cyclodextrin Derivatives as Protein Aggregation Modulators. by Carmen Popescu, Miles Larson, Nathan Ma, Shiqi Hong and ... ß-cyclodextrin, with MS=0.65) and (KLEPTOSE® HP hydroxypropyl-ß-cyclodextrin, with MS=0.9) on two biologic drugs (Infliximab ... Preliminary results demonstrate that KLEPTOSE® HPB BioPharma hydroxypropyl-ß-cyclodextrin and KLEPTOSE® HP BioPharma ... hydroxypropyl-ß-cyclodextrin at high molarity (200 mM) are efficient tools in modulating Infliximab relative degree of ...
GLOBAL FOLD OF MALTODEXTRIN BINDING PROTEIN COMPLEXED WITH BETA-CYCLODEXTRIN USING PEPTIDE ORIENTATIONS FROM DIPOLAR COUPLINGS ... Maltose-binding periplasmic protein, Beta-lactamase TEM chimera SEE REMARK 999 562 3.5.2.6 , Details ... Maltose-binding periplasmic protein, Beta-lactamase TEM chimera SEE REMARK 999 562 3.5.2.6 , Details ...
X-ray structure of the mutant E354A complexed with beta-cyclodextrin, and kinetic analyses on cyclodextrins. ... Studies on the hydrolyzing mechanism for cyclodextrins of Thermoactinomyces vulgaris R-47 alpha-amylase 2 (TVAII). ... Alpha Beta Alpha-Beta Barrel TIM Barrel Glycosidases A4. 1g1yA04. Mainly Beta Sandwich Immunoglobulin-like Golgi alpha- ... Alpha Beta Alpha-Beta Barrel TIM Barrel Glycosidases B4. 1g1yB04. Mainly Beta Sandwich Immunoglobulin-like Golgi alpha- ...
Simultaneous determination of flavonoid analogs in Scutellariae Barbatea Herba by beta-cyclodextrin and acetonitrile modified ... Simultaneous determination of flavonoid analogs in Scutellariae Barbatea Herba by beta-cyclodextrin and acetonitrile modified ...
Beta cyclodextrins bind and remove Lipofuscin Bisretinoids from RPE You will receive an email whenever this article is ... Marcelo Nociari; Beta cyclodextrins bind and remove Lipofuscin Bisretinoids from RPE. Invest. Ophthalmol. Vis. Sci. 2013;54(15 ... Results: We have identified beta cyclodextrins (β-CDs), cyclic rings formed by 7 glucose residues, as small drugs that bind A2E ... We show that treatment with beta-CDs stabilizes A2E by preventing its oxidation, and reduces bisretinoid content from ...
Dissolution of nimodipine in an aqueous solution of hydroxyethyl-beta-cyclodextrin and a review of solubility of nimodipine ... with cyclodextrins]. Download Prime PubMed App to iPhone, iPad, or Android ... The used cyclodextrins were native beta-cyclodextrin (beta-CD), its derivatives hydroxyethyl-beta-CD (HE-beta-CD), three ... The used cyclodextrins were native beta-cyclodextrin (beta-CD), its derivatives hydroxyethyl-beta-CD (HE-beta-CD), three ...
Peter Sun, FDA, HPBCD, hydroxyl-propyl-beta-cyclodextrin, identical twins, Johnson & Johnson, Lorenzos Oil, Medtronic, ... You are here: Home / Archives for hydroxyl-propyl-beta-cyclodextrin. FDA Filing Made Requesting Use of Medtronic SynchroMed ... with the FDA yesterday on behalf of the twins seeking a permanent solution to deliver hydroxyl-propyl-beta-cyclodextrin [...] ... Weve reached another historic milestone in our effort to treat Addi and Cassi with cyclodextrin! Dr. Caroline Hastings at ...
Molecular Recognition by beta-Cyclodextrin Derivatives: FEP vs MM / PBSA Study. Author(s): I. Bea, E. cervello, P. A. Kollman, ... p-tert-butylbenzamide and a bisadamantyl-phosphate derivative with a beta-cyclodextrin derivative formed by two cyclodextrin ... p-tert-butylbenzamide and a bisadamantyl-phosphate derivative with a beta-cyclodextrin derivative formed by two cyclodextrin ... I. Bea, E. cervello, P. A. Kollman and C. jaime, " Molecular Recognition by beta-Cyclodextrin Derivatives: FEP vs MM / PBSA ...
HP-beta- and HP-gamma-CyDs) as biocompatible solubilizers and stabilizers for oleic acid, a lipophilic absorption enhancer, was ... The potential use of three 2-hydroxypropyl ether derivatives of cyclodextrins (HP-alpha-, ... The potential use of three 2-hydroxypropyl ether derivatives of cyclodextrins (HP-alpha-, HP-beta- and HP-gamma-CyDs) as ... hormone releasing hormone agonist buserelin by oleic acid solubilized and stabilized in hydroxypropyl-beta-cyclodextrin Chem ...
Crystal structure of the 1:1 complex of heptakis (2,3,6-tri-O-methyl)cyclomalto-heptaose(permethylated beta-cyclodextrin)with ...
Beta-cyclodextrin (beta-CD) is an ideal candidate for a host molecule, and it is used as such in drug delivery and separation ... Insight into the Structural Deformations of Beta-Cyclodextrin Caused by Alcohol Cosolvents and Guest Molecules. Zhang, Haiyang ... Interaction with puerarin endowed beta-CD with a more rigid structure than with daidzin and a weaker ternary complex beta-CD/ ... The structural behavior of free beta-CD and host guest complexes of beta-CD with two isoflavonoid isomers (puerarin and daidzin ...
... K-REx Repository. Search K-REx. This Collection. ... Beta-cyclodextrin complexing to reduce antibiotic residue in milk. Banala, S.; Brouk, Michael J.; Simmons, S.R.; Schmidt, Karen ... cyclodextrin (β-CD) were added to water or pasteurized whole milk to study β-CD crystallization patterns. Influential factors ... Keywords: Dairy; β-cyclodextrin; Cephapirin; Sodium; Cephapirin benzathine; Milk. Conference: Dairy Day, 2004, Kansas State ...
... aim of this study was to increase the water solubility of tosufloxacin tosylate by inclusion with hydroxypropyl-β-cyclodextrin ... Preparation, Characterization and in vitro Evaluation of Tosufloxacin Tosylate and Hydroxypropyl-beta-cyclodextrin Inclusion ... These results demonstrated that hydroxypropyl-β-cyclodextrin could be potentially beneficial in the delivery of water-insoluble ... Results obtained confirmed the formation of tosufloxacin tosylate/ hydroxypropyl-β-cyclodextrin inclusion complex. In addition ...
Cyclodextrins (CD) and calixarenes are complexing agents that have been successfully used as pharmaceutical drug carriers, to ... Investigation of tetracaine complexation with beta-cyclodextrins and p-sulphonic acid calix[6]arenes by nOe and PGSE NMR ... Inclusion compounds between beta-cyclodextrin: local anesthetics a theoretical and experimental study using differential ... Inclusion complex of piroxicam with beta-cyclodextrin and incorporation in cationic microemulsion. In vitro drug release and in ...
  • We have 4 series (Medical Cyclodextrins, Cyclodextrin Reagents, Cyclodextrin Complexes, Cyclodextrin Polymers ) of more than 40 kinds of cyclodextrins now. (opencroquet.org)
  • From them we derived the stability constants of the inclusions complexes nimodipine-cyclodextrin (1:1) as well as the empirical linear equations for the calculation of the saturated nimodipine concentration at a given cyclodextrin concentration. (unboundmedicine.com)
  • Szejtli, J.: Cyclodextrins and Their Inclusion Complexes. (springer.com)
  • The preferred perfume/cyclodextrin complexes, either alone or admixed with solvent (e.g., water), are preferably suspended in the carrier and then incorporated into solid, dryer-activated, fabric treatment (conditioning) compositions, preferably containing fabric softeners, more preferably cationic and/or nonionic fabric softeners. (google.ca)
  • and mixtures thereof, and wherein said cyclodextrin is capable of forming inclusion complexes with said active. (google.ca)
  • The complexes between betulin and the previously mentioned cyclodextrin were analyzed by scanning electron microscopy (SEM)and differential scanning calorimetry (DSC) and pharmacologically evaluated in vitro (MTT and immunocytochemistry tests) and in vivo in C57BL/6J mice. (mdpi.com)
  • Characterization of beta-cyclodextrin inclusion complexes containing an essential oil component. (springer.com)
  • A new technique to prevent the main post harvest diseases in berries during storage: inclusion complexes β-cyclodextrin-hexanal. (springer.com)
  • As a model system we chose the host-guest complexes of β -cyclodextrin ( β -CD) with different guest molecules. (biomedcentral.com)
  • The aqueous solubility of silymarin was linearly increased as a function of the concentration of β-cyclodextrin alone and in the presence of hydrophilic polymers, PVP, HPMC and PEG The increase in solubility was due to the formation of a 1: 1 M complexes in solutions. (healthdocbox.com)
  • The complexes formed between β- cyclodextrin and silymarin were quite stable as indicated by apparent stability constants. (healthdocbox.com)
  • Keywords: Silymarin, Cyclodextrin Complexation, Hydrophilic Polymers, Ternary Phase Solubility INTRODUCTION β-cyclodextrin (BCD) is the most widely used of water-solublepolymer to aqueous CD host molecule for inclusion complexes solution has been shown to improve affecting physical and chemical properties, like solubility and stability of several guest complexation efficiency of CDs [5-8]. (healthdocbox.com)
  • Although cyclodextrin complexes. (healthdocbox.com)
  • Inclusion complexes of tadalafil with natural and chemically modified beta-cyclodextrins. (semanticscholar.org)
  • Beta-cyclodextrin (BCD) increases the aqueous solubility of many poorly soluble drugs by forming inclusion complexes with their polar molecules or functional groups. (hindawi.com)
  • Also, the bitter taste of substances can be reduced or even completely eliminated if they form inclusion complexes of sufficient stability with the selected cyclodextrin [ 8 ]. (hindawi.com)
  • Chlorhexidine (Cx) augmented with beta- cyclodextrin (β-cd) inclusion compounds, termed Cxβ-cd complexes, have been developed for use as antiseptic agents. (bvsalud.org)
  • With a hydrophobic interior and hydrophilic exterior, cyclodextrins form complexes with hydrophobic compounds. (wikipedia.org)
  • In contrast, the exterior is sufficiently hydrophilic to impart cyclodextrins (or their complexes) water solubility. (wikipedia.org)
  • Cholesterol depletion from LLC-MK2 cells by methyl-beta cyclodextrin treatment resulted in a marked increase in the production of both HVJ from the infected cells and virus-like particles from M-gene-transfected cells. (deepdyve.com)
  • We have a modernized inspection center and the most advanced medical auxiliary production lines in China for Beta-Cyclodextrin, Hydroxypropyl-Beta-Cyclodextrin, Hydroxyethyl-Beta-Cyclodextrin, Methyl-Beta-Cyclodextrin, Piroxicam-Beta-Cyclodextrin, Sodiumsulphobutylether-Beta-Cyclodextrin and Glucosyl-Beta-Cyclodextrin. (exportimes.com)
  • KLEPTOSE® HP and HPB, Roquette's Hydroxypropyl betacyclodextrins (HPBCD), are highly soluble betacyclodextrin derivatives - multifunctional excipients for molecular encapsulation suitable for both pharmaceutical (oral and parenteral grades) as well as for cosmetic applications. (roquette.com)
  • It is a leading manufacturer and supplier of cyclodextrin derivatives in China. (opencroquet.org)
  • As the base of research, development, production and sales for Cyclodextrin Derivatives, our R&D team that are formed by domestic and overseas experts in the field of cyclodextrin. (opencroquet.org)
  • The objective was to evaluate the effect of two ßcyclodextrins derivatives: (KLEPTOSE® HPB hydroxypropyl-ß-cyclodextrin, with MS=0.65) and (KLEPTOSE® HP hydroxypropyl-ß-cyclodextrin, with MS=0.9) on two biologic drugs (Infliximab and Etanercept) aggregation using high-throughput formulation screening (iFormulate™) and nanoDSF (Differential Scanning Fluorimetry) (3,4). (bioprocessintl.com)
  • The used cyclodextrins were native beta-cyclodextrin (beta-CD), its derivatives hydroxyethyl-beta-CD (HE-beta-CD), three hydroxypropyl-beta-CD (HP-beta-CD) with various degree of substitution and methyl-beta-CD (M-beta-CD), native alpha-cyclodextrin (alpha-CD), hydroxypropyl-alpha-CD (HP-alpha-CD) and hydroxypropyl-gamma-CD (HP-gamma-CD). (unboundmedicine.com)
  • I. Bea, E. cervello, P. A. Kollman and C. jaime, " Molecular Recognition by beta-Cyclodextrin Derivatives: FEP vs MM / PBSA Study", Combinatorial Chemistry & High Throughput Screening (2001) 4: 605. (eurekaselect.com)
  • The potential use of three 2-hydroxypropyl ether derivatives of cyclodextrins (HP-alpha-, HP-beta- and HP-gamma-CyDs) as biocompatible solubilizers and stabilizers for oleic acid, a lipophilic absorption enhancer, was assessed in the nasal absorption of buserelin, an agonist of luteinizing hormone-releasing hormone, in rats. (nih.gov)
  • Is currently the most in-depth study, the most widely used one cyclodextrin derivatives. (infospaceinc.com)
  • Among the chitosan derivatives, cyclodextrin-grafted chitosan and poly(ethylene glycol)-grafted chitosan are excellent candidates for a range of biomedical, environmental decontamination, and industrial purposes. (frontiersin.org)
  • This work discusses modifications including chitosan with attached cyclodextrin and poly(ethylene glycol), and the main applications of these chitosan derivatives in the biomedical field. (frontiersin.org)
  • Native β-cyclodextrin (B-CD) and two hydroxypropyl derivatives were first evaluated by conventional phase solubility experiments for their ability to complex four poorly water-soluble nonsteroidal anti-inflammatory drugs (NSAIDs). (springer.com)
  • Through complexation with HP-beta-CD, the solubility of Ba in neutral aqueous solution was improved significantly. (unboundmedicine.com)
  • The aim of this work was to investigate the complexation of the local anesthetic tetracaine 1 with β-cyclodextrin 2 , as well as with p -sulphonic acid calix[6]arene 3 . (springer.com)
  • Thus, in the present work, we thought it worthy of interest to investigate in-depth the combined effect of pH control and cyclodextrin (CyD) complexation on SQV solubilization. (elsevier.com)
  • Phase-solubility studies were performed by adding excess drug to buffered (pH from 1.1 to 7.4) aqueous solutions containing increasing concentrations of Methyl-Beta-CyD (M-β-CyD) in order to evaluate the role of the unionized species of SQV in improving solubility by CyD complexation and to be able to select the most suitable conditions for optimizing drug solubilization. (elsevier.com)
  • Its biological effect is limited by its poor water solubility, which can be improved by cyclodextrin complexation. (mdpi.com)
  • The solubility of betulin is improved by cyclodextrin complexation, which creates a stable complex that improves the in vitro and in vivo properties of the active compound. (mdpi.com)
  • Though cyclodextrin complexation and use of water-soluble polymers for enhancing the solubility of silymarin have been investigated separately, no reports are available on their combined use in enhancing the solubility. (healthdocbox.com)
  • The objective of the present investigation is to study the complexation of silymarin with β- cyclodextrin alone and in the presence of hydrophilic polymers by phase solubility study and to evaluate the feasibility of enhancing the solubility of silymarin. (healthdocbox.com)
  • Addition of hydrophilic polymers has markedly enhanced the complexation efficiency of β- cyclodextrin. (healthdocbox.com)
  • 2 complexation efficiency of β-cyclodextrin. (healthdocbox.com)
  • The objective of this research was to investigate physicochemical properties of an active pharmaceutical ingredient (API) that influence cyclodextrin complexation through experimental and computational studies. (springer.com)
  • Holvoet C, Heyden YV, Plaizier-Vercammen J. Inclusion complexation of lorazepam with different cyclodextrins suitable for parenteral use. (springer.com)
  • Improving glyburide solubility and dissolution by complexation with hydroxybutenyl-beta-cyclodextrin. (semanticscholar.org)
  • The diffusion experiments (diffusion ordered spectroscopy) showed a high percentage of complexation (86 %) and that the drug molecule is preferentially interacting with the large side of the beta-cyclodextrin cavity. (unicamp.br)
  • The inclusion complexation of pyrimethamine in 2-hydroxypropyl-beta-cyclodextrin has been investigated by 2D H-1 NMR, FTIR and UV/visible spectroscopy and also by molecular modelling methods (AM1, PM3, MM3). (unicamp.br)
  • 1984). In a preliminary comparative metabolism study in rats, groups each of 2 animals were given 14 C-labelled alpha-cyclodextrin, -cyclodextrin or gelatinised potato starch by gavage as approximately 2.5 ml of a 2.5% aqueous solution. (inchem.org)
  • Typical cyclodextrins contain a number of glucose monomers ranging from six to eight units in a ring, creating a cone shape: α (alpha)-cyclodextrin: 6 glucose subunits β (beta)-cyclodextrin: 7 glucose subunits γ (gamma)-cyclodextrin: 8 glucose subunits Cyclodextrins are ingredients in more than 30 different approved medicines. (wikipedia.org)
  • Linear polymers cross cyclodextrin cavities as pearl necklace. (zycydextrin.com)
  • PEG Hydrophilic polymers have markedly enhanced the solubilizing efficiency of β-cyclodextrin. (healthdocbox.com)
  • Hence, a combination of β- cyclodextrin and hydrophilic polymers is recommended for enhancing solubility of silymarin. (healthdocbox.com)
  • Beta-cyclodextrins ( β -cds) are particularly efficient sterol acceptors, apparently because the size of their inner hydrophobic cavity matches the size of the sterol molecule (18, 28, 30, 34). (scielo.br)
  • 2-Hydroxypropyl-β-cyclodextrin (HBC) is a widely used modified cyclodextrin, the lipophilic cavity formed by 7 glucose units. (lookchem.com)
  • The bend structure due to a cis-double bond halfway along the acyl chain of oleic acid provided a better fit into the cavity of HP-beta-CyD, in which the double bond appears to be buried, and hence becomes less susceptible to oxidation. (nih.gov)
  • Description Beta cyclodextrin is a cyclic heptamer composed of seven glucose units joined head to tail by alpha 1 4 links It is produced by the action of the enzyme cyclodextrin glycosyl transferase CGT on hydrolyzed starch syrups And it is white powder and there is a cavity in its molecule which. (zhishangchemical.com)
  • CAPTISOL® is an anionic -cyclodextrin derivative with a sodium sulfonate salt separated from the hydrophobic cavity by a butyl ether spacer group. (kvvgfriesland.nl)
  • Characteristics and Uses: The introduction of hydroxypropyl β - cyclodextrin breaking intramolecular hydrogen bond ring, while maintaining the cyclodextrin cavity while overcoming the poorly water-soluble β - cyclodextrin major drawback. (infospaceinc.com)
  • NMR experiments revealed changes in the chemical shift of H3HP-β-CD hydrogens (δ=0.026ppm) that were compatible with the insertion of CND in the hydrophobic cavity of the cyclodextrin. (conicet.gov.ar)
  • Concerning the structure of the complex, a Cl-in orientation of pyrimethamine in the 2-hydroxypropyl-o-cyclodextrin cavity has been proposed from the theoretical calculations, being confirmed by two-dimensional H-1 NMR spectroscopy (ROESY). (unicamp.br)
  • We are engaged in offering excellent quality Sodium Sulfobutyl Ether Beta Cyclodextrin SBECD 128410-00-0 to our valuable clients. (opencroquet.org)
  • Thereby, the water solubility of the β-cyclodextrin increases from 18.5 g · l-1 to more than 900 g · l-1 at 25 °C. Sulfobutyl ether-beta-cyclodextrin also finds a wide range of applications as an inert vehicle for drug delivery (the drugs transport and release). (kvvgfriesland.nl)
  • Find Sulfobutyl Ether Beta Cyclodextrin Sodium Salt at Price 350~500 USD ($)/Bag in Boxing Economic Development Zone, Binzhou. (kvvgfriesland.nl)
  • Buy Sulfobutyl Ether Beta Cyclodextrin Sodium Salt from Shandong Binzhou Zhiyuan Biotechnology Co.,Ltd. with minimum order quantity 1kg Bag. (kvvgfriesland.nl)
  • Sulfobutyl Ether-Beta-Cyclodextrin, Sodium Salts Classification of the substance or mixture Not a dangerous substance according to GHS. (kvvgfriesland.nl)
  • Sulfobutyl Ether-beta-Cyclodextrin Sodium can be well combined with drug molecules to form non covalent complex, to play a role of improving water solubility stability,reducing nephrotoxicity,controlling drug release rate, enhancing safety of the drug, covering up bad smell, easing drug hemolysis,etc. (cycdextrin.com)
  • The neutral, positive and negative APIs can effectively combine with Sulfobutyl Ether-beta-Cyclodextrin Sodium, which can increase the solubility of different compounds by 10 to 25000 times. (cycdextrin.com)
  • Sulfobutyl Ether-beta-Cyclodextrin Sodium, has good biocompatibility and can be administered by injection, oral administration, eye, nose, external use and inhalation. (cycdextrin.com)
  • In general, Sulfobutyl Ether-beta-Cyclodextrin Sodium can be quickly and completely eliminated from the kidney after administration. (cycdextrin.com)
  • The interaction with Sulfobutyl Ether-beta-Cyclodextrin Sodium provides a beneficial protective environment for the API in its lipophilic chamber, while the hydrophilic surface provides excellent water solubility providing solubility and stability. (cycdextrin.com)
  • Betadex sulfobutyl ether sodium is a high water-soluble anionic cyclodextrin derivative. (kvvgfriesland.nl)
  • The USP Betadex Sulfobutyl Ether Sodium monograph describes a 25 × 0.4 cm analytical anion-exchange column containing a L61 packing column type for the separation of β-cyclodextrin and sulfobutyl ether β-cyclodextrin. (kvvgfriesland.nl)
  • Cyclodextrins (CD) and calixarenes are complexing agents that have been successfully used as pharmaceutical drug carriers, to improve the bioavailability of medicines. (springer.com)
  • The Effect of Beta-Cyclodextrin on the Iodometric Determination of Some Penicillins Reported in USP and BP', Iranian Journal of Pharmaceutical Sciences , 8(4), pp. 227-231. (ijps.ir)
  • Brewster ME, Loftsson T. Cyclodextrins as pharmaceutical solubilizers. (springer.com)
  • Structure and thermodynamics of alpha-, beta-, and gamma-cyclodextrin dimers. (eurekamag.com)
  • The alpha-, beta-, and gamma-cyclodextrin (CyDs) dimers were studied by molecular dynamics (MD) simulations in water as an explicit solvent. (eurekamag.com)
  • Alpha-, beta-, and gamma-cyclodextrin are all generally recognized as safe by the U.S. FDA. (wikipedia.org)
  • Wacker Chemie AG uses dedicated enzymes, that can produce alpha-, beta- or gamma-cyclodextrin specifically. (wikipedia.org)
  • This is very valuable especially for the food industry, as only alpha- and gamma-cyclodextrin can be consumed without a daily intake limit. (wikipedia.org)
  • 3 MATERIALS AND METHODS Chemicals Beta cyclodextrin (β-cd), Poly vinyl pyrrolidone K30 (PVP), PEG 6000 and HPMC 4000 cps were purchased from Sigma Aldrich Chemical Co. USA. (healthdocbox.com)
  • The best results have been obtained by using a novel cyclodextrin derivative, octakis-[6-deoxy-6-(2-sulfanyl ethanesulfonate)]-γ-CD. (mdpi.com)
  • The thermal stability of the cyclodextrin derivative exceeds 200°C. (mpg.de)
  • Incorporates a phase consisting of a 2,3,6-tri-O-methyl derivative of β-cyclodextrin. (sigmaaldrich.com)
  • Hydroxypropyl beta-cyclodextrin can improve the solubility of poorly soluble compounds and can be used for taste masking of bitter or unpleasant active ingredients. (roquette.com)
  • The interaction of 2-hydroxypropyl-beta-cyclodextrin (HP-beta-CD) and a poorly water-soluble flavonoid, baicalein (Ba), chemically 5,6,7-trihydroxy flavone in solution and solid-state was studied. (unboundmedicine.com)
  • The nimodipine dissolution was studied as a function of time (up to 14 days) and cyclodextrin concentration up to 0.07 mol/l, excepting the less soluble beta-CD. (unboundmedicine.com)
  • In the field of medicine cyclodextrin can effectively increase some water-soluble adverse drug in the water solubility and dissolution rate, such as prostaglandins - CD inclusion compound can increase the solubility of the main medicines and injection is. (cyclodextrinchina.com)
  • Cyclodextrin can effectively increase the solubility and dissolution rate of some poorly water-soluble drugs in water. (sgonekbio.com)
  • Beta Cyclodextrin a sugar polymer which is used in pharmaceuticals food and cosmetics in many form to make a novel drug delivery systems to make an drug readily absorbable by making a drug otherwise poor soluble in to a freely soluble drug in biological membranes. (pharmacistspharmajournal.org)
  • Beta Cyclodextrin is rapidly removed out from body after injection , but its property to form a soluble complex with other peptides and lipids will take away toxic molecules responsible for progression of Niemann Pick Type C Disease out of brain, we fell doctors will be successful in their goal. (pharmacistspharmajournal.org)
  • From the phase-solubility diagram a linear increase was observed in pyrimethamine aqueous solubility in the presence of 2-hydroxypropyl-beta-cyclodextrin, evidencing the formation of a soluble inclusion complex. (unicamp.br)
  • Purification of the three types of cyclodextrins takes advantage of the different water solubility of the molecules: β-CD which is poorly water-soluble (18.5 g/l or 16.3mM) (at 25C) can be easily retrieved through crystallization while the more soluble α- and γ-CDs (145 and 232 g/l respectively) are usually purified by means of expensive and time consuming chromatography techniques. (wikipedia.org)
  • Beta-cyclodextrin as a new medicine anxiliary materical, is mainly used to strengthen the stability of the medicine, prevent it from oxidation and decomposition, also it can increase the solubility of the medicine, reduce the toxicity of it and cover up the odor and smell from it. (fuzing.com)
  • In addition, the dissolution and stability of the complex was also evaluated, which indicated that the water solubility and stability of tosufloxacin tosylate were significantly increased in the presence of hydroxypropyl-β-cyclodextrin. (ijpsonline.com)
  • β-Cyclodextrin sulfobutyl ethers sodium salts Captisol (SBE-β-CD) is a chemically modified cyclodextrin with a structure designed to optimize the solubility and stability of drugs. (kvvgfriesland.nl)
  • Appearance: White Power, sweet, insipid, innocent CAS NO.: 92517-02-7 Standards: In-house standard Application:Food, Pharmaceuticals, Cosmetics Durability: 36 months In the fields of food and spice Glucosyl beta cyclodextrin can improve the stability and long effect of. (cyclodextrinchina.com)
  • Increasing weight ratio of drug to hydroxypropyl-beta-cyclodextrin to 1:2 and 1:3 showed increase in percent drug release compared to formulation containing 1:1 weight ratio of drug to hydroxypropyl-beta-cyclodextrin but the prepared econazole nitrate nanosuspension containing 1:1 weight ratio of drug to hydroxypropyl-beta-cyclodextrin revealed best stability study during storage period at room temperature compared to other formulations. (exordo.com)
  • As a result of in-vitro drug release and stability studies, the optimum weight ratio of 1:1, drug to hydroxylpropyl-beta-cyclodextrin, was chosen as a best weight ratio duo to its good balance between drug release and stability of drug nanoparticles. (exordo.com)
  • Hydroxypropyl beta cyclodextrin can improve the stability and durability of nutritive molecules, mask or rectify the bad smell and taste of food nutritive molecules, and improve the production process and product quality. (zhiyuan-cydextrin.com)
  • The cyclodextrin confers solubility and stability to these drugs. (wikipedia.org)
  • 14. The branched cyclodextrin of claim 13 wherein said cyclodextrin is beta cyclodextrin. (google.com)
  • Shandong Binzhou Zhiyuan Biological Technology Co.,Ltd is one of the leading China beta-cyclodextrin-epichlorohydrin copolymer manufacturers and suppliers, as a professional company, we have productive factory, which is able to produce high-quality beta-cyclodextrin-epichlorohydrin copolymer at good price. (zycydextrin.com)
  • Get info of suppliers, manufacturers, exporters, traders of Beta Cyclodextrin for buying in India. (collectif-gare.ch)
  • Senloschem is one of the biggest manufacturers, suppliers and factory of Cyclodextrin & its series in China. (collectif-gare.ch)
  • As one of professional beta cyclodextrin manufacturers and suppliers in China, we'll provide you with the best beta cyclodextrin made in China. (cyclodextrinchina.com)
  • 1963). -Cyclodextrin, purity >77%, and glucose, uniformly labelled with 14 C, were administered to rats by gavage as solutions in 20% aqueous dextran at dose levels of 13 mg/kg bw for glucose and 36 and 313 mg/kg bw for -cyclodextrin. (inchem.org)
  • A cyclodextrin-modified micellar electrokinetic chromatography (CD-MEKC) method has been developed and validated for purity determination of two bile acids, ursodeoxycholic acid (UDCA) and deoxycholic acid (DCA). (biomedsearch.com)
  • Kopecký F, Kopecká B, Kaclík P. [Dissolution of nimodipine in an aqueous solution of hydroxyethyl-beta-cyclodextrin and a review of solubility of nimodipine with cyclodextrins]. (unboundmedicine.com)
  • Despite its use in commercially available drugs such as intravenous voriconazole, there is little known in the medical literature about the clinical pharmacology of the solubilizing agent, sulfobutylether-beta-cyclodextrin (SBECD). (nih.gov)
  • Our main products are: hydroxyproyl beta cyclodextrin, sodium sulfobutylether beta cyclodextrin, beta cyclodextrin. (collectif-gare.ch)
  • Cyclodextrin is part of polymer structure, such as epichlorohydrin cross-linked cyclodextrin. (zycydextrin.com)
  • Cyclodextrin hung outside the polymer chain, such as acryloyl cyclodextrin polymer. (zycydextrin.com)
  • 3, Cyclodextrin grafted polymer. (zycydextrin.com)
  • Cyclodextrin is grafted to the polymer end, such as cyclodexdrin grafed poly lactic acid. (zycydextrin.com)
  • We are China Origin Factory of Selling Beta Cyclodextrin Polymer. (zycydextrin.com)
  • The aim of this study was to develop, characterize and evaluate in vitro the efficacy of active films, based on an inclusion complex formed by β-cyclodextrin, 2-nonanone and two polymer matrices (polylactic acid and low density polyethylene). (springer.com)
  • beta)-Cyclodextrin-polyurethane ((beta)-CDPU) polymer was synthesized by the reaction of (beta)-cyclodextrin with hexamethylene diisocyanate in dry dimethylformamide and used as a sorbent for the solid phase extraction (SPE) of carcinogenic aromatic amines from water. (ac.ir)
  • The results of an ongoing 1-year oral toxicity study in dogs and information on the effects of -cyclodextrin on the bioavailability of lipophilic nutrients were required by 1995. (inchem.org)
  • By comparing the AUC0-infinity of BG between oral dosing, the relative bioavailability of Ba/HP-beta-CD co-lyophilized product to free Ba was 165.0%, which highlighted the evidence of significantly improved bioavailability of formulation of Ba with HP-beta-CD. (unboundmedicine.com)
  • The rate and extent of nasal bioavailability of buserelin were remarkably increased by coadministration of oleic acid and HP-beta-CyD, compared with the sole use of the enhancer. (nih.gov)
  • When biopharmaceutics of the optimized cyclodextrin-based formulation of SQV was studied in Wistar rats after intravenous and oral administrations, we found that inclusion of SQV into M-β-CyD could dramatically improve its oral bioavailability and decrease the variation of its oral pharmacokinetics. (elsevier.com)
  • In this work, we describe the preparation and characterization of an inclusion complex of clonidine in hydroxypropyl-beta-cyclodextrin (HP-β-CD), as revealed by experimental (UV-vis absorption, SEM, X-ray diffraction, DOSY- and ROESY-NMR) and theoretical (molecular dynamics) approaches. (conicet.gov.ar)
  • Cyclodextrin-Shop is a division of AraChem, a fine chemicals company from the Netherlands: Our teams have acquired a large expertise in the field of cyclodextrin chemistry. (collectif-gare.ch)
  • Appearance: White Power, sweet, insipid, innocent CAS NO.: 92517-02-7 Standards: In-house standard Durability: 36 months Product Description In the field of medicine Glucosyl-Beta-Cyclodextrin can be used to improve the effectiveness of synthetic technology of Chiral drugs. (cyclodextrinchina.com)
  • As a result of its cyclic structure, -cyclodextrin has the ability to form inclusion compounds with a range of molecules, generally of molecular mass of less than 250. (inchem.org)
  • In addition, the air freshener can slowly release gas molecules by adding cyclodextrin to prolong the duration of fragrance. (sgonekbio.com)
  • 2 sigma(I). The beta-CyD molecules follows the screw channel mode of packing. (uclouvain.be)
  • The inclusion compounds of cyclodextrins with hydrophobic molecules are able to penetrate body tissues, these can be used to release biologically active compounds under specific conditions. (wikipedia.org)
  • CGTases produce mixtures of cyclodextrins, thus the product of the conversion results in a mixture of the three main types of cyclic molecules, in ratios that are strictly dependent on the enzyme used: each CGTase has its own characteristic α:β:γ synthesis ratio. (wikipedia.org)
  • Rat caecal microflora were able to utilize -cyclodextrin under anaerobic conditions in vitro, indicating that the compound may be hydrolyzed to glucose by bacterial enzymes. (inchem.org)
  • Release of acetaldehyde from β-cyclodextrins inhibits postharvest decay fungi in vitro. (springer.com)
  • A surface tension method developed previously has been used to investigate the formation of inclusion compounds between dimethyldodecylamine oxide (DDAO) and beta-cyclodextrin, at pH values in the range 2 to 8, in the absence and in the presence of added 0.10 M NaCl. (istanbul.edu.tr)
  • Cyclodextrin (CD) is a general term for a series of cyclic oligosaccharides produced by amylose under the action of cyclodextrin glucosyltransferase produced by Bacillus, usually containing 6 to 12 D-pyrans Glucose unit. (sgonekbio.com)
  • Cyclodextrins are cyclic oligosaccharides composed of six to eight units of glucopyranosyl connected by α-(1→4) linkages ( Davis and Brewster, 2004 ). (frontiersin.org)
  • Cyclodextrins are a family of cyclic oligosaccharides, consisting of a macrocyclic ring of glucose subunits joined by α-1,4 glycosidic bonds. (wikipedia.org)
  • The largest cyclodextrin contains 32 1,4-anhydroglucopyranoside units, while as a poorly characterized mixture, at least 150-membered cyclic oligosaccharides are also known. (wikipedia.org)
  • 4.Sodium sulphobutylether beta cyclodextrin is mainly used in the azotic medicine as an excipient. (opencroquet.org)
  • Hydroxypropyl beta cyclodextrin is an ideal injection and drug excipient because of its relatively low relative surface activity and hemolytic activity and no irritation to the muscles. (zhiyuan-cydextrin.com)
  • We are the earliest and most advanced factory which produces Hydroxypropyl-Beta-Cyclodextrin professionally in China. (exportimes.com)
  • The formation of Ba/HP-beta-CD complex in aqueous solution was demonstrated by UV spectroscopy, while Ba/HP-beta-CD co-lyophilized product was characterized by differential scanning calorimetry (DSC) and X-ray diffractometry (XRD). (unboundmedicine.com)
  • In a vacuum, MD simulations provided the head-to-head orientation as the most stable orientation for the three CyDs, while in aqueous solution the, the head-to-tail orientation was found to be the most stable for the alpha-CyD dimer and the tail-to-tail orientation the most stable for the beta- and gamma-CyD dimers. (eurekamag.com)
  • Category 4, 5 are the research frontiers of supramolecular chemistry.Category 1,2,3 as new materials that have hydrophilic and molecular complexablity by introducing cyclodextrins to traditional ploymers have great future: First, one application is in the establishment of economic separation system, such as membrane based on cyclodextrin. (zycydextrin.com)
  • Third, cyclodextrin modified natural or synthetic fibers show significant improvements in hydrophilic and electrostatic properties. (zycydextrin.com)
  • Two different cyclodextrins (αCD, βCD) were covalently conjugated to branched polyethylenimine (PEI), which was additionally functionalized with folic acid (PEI-βCD-αCD-FA). (edu.pl)
  • Roquette has pioneered the industrial development of cyclodextrins with its KLEPTOSE® range of hydroxypropyl beta-cyclodextrins. (roquette.com)
  • Preliminary results demonstrate that KLEPTOSE® HPB BioPharma hydroxypropyl-ß-cyclodextrin and KLEPTOSE® HP BioPharma hydroxypropyl-ß-cyclodextrin at high molarity (200 mM) are efficient tools in modulating Infliximab relative degree of aggregation. (bioprocessintl.com)
  • In this study, econazole nitrate nanoparticles were formulated by nano-spray dryer using 1:1, 1:2 and 1:3 weight ratios of drug to hydroxypropyl-beta-cyclodextrin and stabilizer. (exordo.com)
  • Hydroxypropyl beta cyclodextrin is used as a stabilizer, emulsifier, deodorant and so on. (zhiyuan-cydextrin.com)
  • Description 2-Hydroxypropyl-β-cyclodextrin (HP-β-CD) is a cyclic oligosaccharide containing seven D-(+)-glucopyranose units that is widely used to improve the aqueous solubility of various compounds, especially those containing a phenyl group. (collectif-gare.ch)
  • They are the main ingredient in Febreze which claims that the β-cyclodextrins "trap" odor causing compounds, thereby reducing the odor. (wikipedia.org)
  • The aim of this study was to increase the water solubility of tosufloxacin tosylate by inclusion with hydroxypropyl-β-cyclodextrin. (ijpsonline.com)
  • In this study, we report that beta cyclodextrins, cyclic sugars composed of seven glucose units, can bind retinal lipofuscin, prevent its oxidation and remove it from RPE. (pnas.org)
  • EXPLANATION -Cyclodextrin is a cyclic heptamer composed of seven glucose units joined "head-to-tail" by alpha-1,4 links. (inchem.org)
  • The tosufloxacin tosylate/hydroxypropyl-β-cyclodextrin inclusion complex was characterized by differential scanning calorimetry, powder X-ray diffractometry, and scanning electron microscopy. (ijpsonline.com)
  • Proportions have not for directly online een coupon is doxycycline with beta cyclodextrin divalent tootake powder-free drive death some translational fake area doxycycline disease drug proposition. (gitegrangesdelie.com)
  • Cyclodextrins are also used to produce alcohol powder by encapsulating ethanol. (wikipedia.org)
  • 1.Sodium Sulphobutylether-β-Cyclodextrin is an important modified production of Beta-Cyclodextrin. (opencroquet.org)
  • 2.Sodium Sulphobutylether-Beta-Cyclodextrin is a newly researched and developed production of our company. (opencroquet.org)
  • 3.Sodium Sulphobutylether-Beta-Cyclodextrin has its own characteristics in addition to the ones Beta-Cyclodextrin has. (opencroquet.org)
  • Interest in cyclodextrins is enhanced because their host-guest behavior can be manipulated by chemical modification of the hydroxyl groups. (wikipedia.org)
  • Cholesterol free products: In the food industry, cyclodextrins are employed for the preparation of cholesterol free products: the bulky and hydrophobic cholesterol molecule is easily lodged inside cyclodextrin rings that are then removed. (collectif-gare.ch)
  • Based on the results of X-ray crystal diffraction, infrared spectroscopy, and nuclear magnetic resonance spectroscopy, it is determined that each D(+)-glucopyranose constituting the cyclodextrin molecule is a chair conformation. (sgonekbio.com)
  • Since the glycosidic bond connecting the glucose unit cannot rotate freely, cyclodextrin is not a cylindrical molecule but a slightly conical ring. (sgonekbio.com)
  • The beta form will cover a broad range of molecule sizes. (sigmaaldrich.com)
  • Absorption, distribution, and excretion -cyclodextrin is resistant to hydrolysis by acid (Szeftli & Budai, 1976), alpha- and -amylases and yeast. (inchem.org)
  • 1985). The intestinal absorption, digestibility by the colonic microflora, and urinary excretion of -cyclodextrin were studied. (inchem.org)
  • The pharmacokinetic evaluation of dexamethasone carried out on mice in the present study showed that complexed DMA with β-cyclodextrin modifieds some parameters related to the phases of absorption and elimination of this drug. (scielo.br)
  • Cyclodextrin has been shown in mice to dissolve cholesterol crystals and prevent plaque formation. (collectif-gare.ch)
  • Beta Cyclodextrin (ß CD) has emerged as one of the most preferred cholesterol removal aids. (eurekaselect.com)
  • thus, cyclodextrin functioned as a cholesterol shuttle, enhancing cholesterol bidirectional flux without changing the equilibrium cholesterol distribution between cells and medium. (jci.org)
  • The addition of phospholipid vesicles to serum and cyclodextrin shifted the equilibrium distribution to favor the medium, producing rapid and extensive depletion of cell cholesterol mass. (jci.org)
  • The combination of serum, phospholipid vesicles, and cyclodextrin also stimulated the rapid clearance of both free and esterified cholesterol from mouse peritoneal macrophages loaded with free and esterified cholesterol. (jci.org)
  • Hydroxypropyl-beta and -gamma cyclodextrins rescue cholesterol accumulation in Niemann-Pick C1 mutant cell via lysosome-associated membrane protein 1. (meharryresearch.org)
  • Two-hydroxypropyl-beta-cyclodextrin (HP-B-CD) is able to redirect lysosomal cholesterol to the cytoplasm in Niemann-Pick type C1 disease, a lysosomal storage disorder. (maastrichtuniversity.nl)
  • 2. The branched cyclodextrin of claim 1 wherein the dried, crystalline cyclodextrin is beta cyclodextrin and the branched cyclodextrin is branched beta cyclodextrin. (google.com)
  • 4. The branched cyclodextrin of claim 1 wherein the cyclodextrin is washed prior to step (a) to remove substantially all non-carbohydrate material from the cyclodextrin. (google.com)
  • 6. The branched cyclodextrin of claim 1 wherein the dried, crystalline cyclodextrin substantially free of non-carbohydrate materials is recovered by washing and drying crystalline cyclodextrin. (google.com)
  • 7. The branched cyclodextrin of claim 1 wherein the dried, crystalline cyclodextrin is also free of acyclic dextrins. (google.com)
  • O-Perpentylated -cyclodextrin has been evaluated as chiral stationary phase in capillary gas chromatography. (mpg.de)
  • The permethylated beta-cyclodextrin is a stationary phase that has indicated a potential to separate a wide variety of racemates. (sigmaaldrich.com)
  • β-cyclodextrins are used to produce stationary phase media for HPLC separations. (wikipedia.org)

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