Adrenergic alpha 1 receptor antagonists. Medical search

One of the ANGIOTENSIN-CONVERTING ENZYME INHIBITORS (ACE inhibitors), orally active, that has been used in the treatment of hypertension and congestive heart failure.

Antibodies from non-human species whose protein sequences have been modified to make them nearly identical with human antibodies. If the constant region and part of the variable region are replaced, they are called humanized. If only the constant region is modified they are called chimeric. INN names for humanized antibodies end in -zumab.

A cell surface protein-tyrosine kinase receptor that is overexpressed in a variety of ADENOCARCINOMAS. It has extensive homology to and heterodimerizes with the EGF RECEPTOR, the ERBB-3 RECEPTOR, and the ERBB-4 RECEPTOR. Activation of the erbB-2 receptor occurs through heterodimer formation with a ligand-bound erbB receptor family member.

Tumors or cancer of the human BREAST.

Antibodies produced by a single clone of cells.

The erbB-2 gene is a proto-oncogene that codes for the erbB-2 receptor (RECEPTOR, ERBB-2), a protein with structural features similar to the epidermal growth factor receptor. Its name originates from the viral oncogene homolog (v-erbB) which is a truncated form of the chicken erbB gene found in the avian erythroblastosis virus. Overexpression and amplification of the gene is associated with a significant number of adenocarcinomas. The human c-erbB-2 gene is located at 17q21.2.

Substances that inhibit or prevent the proliferation of NEOPLASMS.

A response by the BARORECEPTORS to increased BLOOD PRESSURE. Increased pressure stretches BLOOD VESSELS which activates the baroreceptors in the vessel walls. The net response of the CENTRAL NERVOUS SYSTEM is a reduction of central sympathetic outflow. This reduces blood pressure both by decreasing peripheral VASCULAR RESISTANCE and by lowering CARDIAC OUTPUT. Because the baroreceptors are tonically active, the baroreflex can compensate rapidly for both increases and decreases in blood pressure.

The thoracolumbar division of the autonomic nervous system. Sympathetic preganglionic fibers originate in neurons of the intermediolateral column of the spinal cord and project to the paravertebral and prevertebral ganglia, which in turn project to target organs. The sympathetic nervous system mediates the body's response to stressful situations, i.e., the fight or flight reactions. It often acts reciprocally to the parasympathetic system.

The number of times the HEART VENTRICLES contract per unit of time, usually per minute.

Receptors in the vascular system, particularly the aorta and carotid sinus, which are sensitive to stretch of the vessel walls.

Precursor of epinephrine that is secreted by the adrenal medulla and is a widespread central and autonomic neurotransmitter. Norepinephrine is the principal transmitter of most postganglionic sympathetic fibers and of the diffuse projection system in the brain arising from the locus ceruleus. It is also found in plants and is used pharmacologically as a sympathomimetic.

The dilated portion of the common carotid artery at its bifurcation into external and internal carotids. It contains baroreceptors which, when stimulated, cause slowing of the heart, vasodilatation, and a fall in blood pressure.

PRESSURE of the BLOOD on the ARTERIES and other BLOOD VESSELS.

The study of the effects of drugs on mental and behavioral activity.

The medical science that deals with the origin, diagnosis, prevention, and treatment of mental disorders.

Articles on conferences sponsored by NIH presenting summary statements representing the majority agreement of physicians, scientists, and other professionals convening for the purpose of reaching a consensus on a subject of interest. This heading is used for NIH consensus conferences as a means of scientific communication. In indexing it is viewed as a type of review article and as a tag for any article appearing in any publication of the NIH Office of Medical Applications of Research (OMAR).

Books used in the study of a subject that contain a systematic presentation of the principles and vocabulary of a subject.

A medical-surgical specialty concerned with the physiology and disorders primarily of the female genital tract, as well as female endocrinology and reproductive physiology.

An insecticide synergist, especially for pyrethroids and ROTENONE.

A mixture of liquid hydrocarbons obtained from petroleum. It is used as laxative, lubricant, ointment base, and emollient.

Chemicals that, while not possessing inherent pesticidal activity, nonetheless promote or enhance the effectiveness of other pesticides when combined.

The discharge of saliva from the SALIVARY GLANDS that keeps the mouth tissues moist and aids in digestion.

Therapy whose basic objective is to restore the volume and composition of the body fluids to normal with respect to WATER-ELECTROLYTE BALANCE. Fluids may be administered intravenously, orally, by intermittent gavage, or by HYPODERMOCLYSIS.

The active insecticidal constituent of CHRYSANTHEMUM CINERARIIFOLIUM flowers. Pyrethrin I is the pyretholone ester of chrysanthemummonocarboxylic acid and pyrethrin II is the pyretholone ester of chrysanthemumdicarboxylic acid monomethyl ester.

Tellurium. An element that is a member of the chalcogen family. It has the atomic symbol Te, atomic number 52, and atomic weight 127.60. It has been used as a coloring agent and in the manufacture of electrical equipment. Exposure may cause nausea, vomiting, and CNS depression.

The active sympathomimetic hormone from the ADRENAL MEDULLA. It stimulates both the alpha- and beta- adrenergic systems, causes systemic VASOCONSTRICTION and gastrointestinal relaxation, stimulates the HEART, and dilates BRONCHI and cerebral vessels. It is used in ASTHMA and CARDIAC FAILURE and to delay absorption of local ANESTHETICS.

A prolonged painful erection that may lasts hours and is not associated with sexual activity. It is seen in patients with SICKLE CELL ANEMIA, advanced malignancy, spinal trauma; and certain drug treatments.

One of the type I interferons produced by peripheral blood leukocytes or lymphoblastoid cells. In addition to antiviral activity, it activates NATURAL KILLER CELLS and B-LYMPHOCYTES, and down-regulates VASCULAR ENDOTHELIAL GROWTH FACTOR expression through PI-3 KINASE and MAPK KINASES signaling pathways.

Polymers of ETHYLENE OXIDE and water, and their ethers. They vary in consistency from liquid to solid depending on the molecular weight indicated by a number following the name. They are used as SURFACTANTS, dispersing agents, solvents, ointment and suppository bases, vehicles, and tablet excipients. Some specific groups are NONOXYNOLS, OCTOXYNOLS, and POLOXAMERS.

Proteins prepared by recombinant DNA technology.

A nucleoside antimetabolite antiviral agent that blocks nucleic acid synthesis and is used against both RNA and DNA viruses.

An imperfect fungus present on most agricultural seeds and often responsible for the spoilage of seeds in bulk storage. It is also used in the production of fermented food or drink, especially in Japan.

A benzodioxane-linked imidazole that has alpha-2 adrenoceptor antagonist activity.

Descriptions of specific amino acid, carbohydrate, or nucleotide sequences which have appeared in the published literature and/or are deposited in and maintained by databanks such as GENBANK, European Molecular Biology Laboratory (EMBL), National Biomedical Research Foundation (NBRF), or other sequence repositories.

A subclass of beta-adrenergic receptors (RECEPTORS, ADRENERGIC, BETA). The adrenergic beta-2 receptors are more sensitive to EPINEPHRINE than to NOREPINEPHRINE and have a high affinity for the agonist TERBUTALINE. They are widespread, with clinically important roles in SKELETAL MUSCLE; LIVER; and vascular, bronchial, gastrointestinal, and genitourinary SMOOTH MUSCLE.

Cell-surface proteins that bind epinephrine and/or norepinephrine with high affinity and trigger intracellular changes. The two major classes of adrenergic receptors, alpha and beta, were originally discriminated based on their cellular actions but now are distinguished by their relative affinity for characteristic synthetic ligands. Adrenergic receptors may also be classified according to the subtypes of G-proteins with which they bind; this scheme does not respect the alpha-beta distinction.

A subclass of alpha-adrenergic receptors found on both presynaptic and postsynaptic membranes where they signal through Gi-Go G-PROTEINS. While postsynaptic alpha-2 receptors play a traditional role in mediating the effects of ADRENERGIC AGONISTS, the subset of alpha-2 receptors found on presynaptic membranes signal the feedback inhibition of NEUROTRANSMITTER release.

A transcriptional regulator in prokaryotes which, when activated by binding cyclic AMP, acts at several promoters. Cyclic AMP receptor protein was originally identified as a catabolite gene activator protein. It was subsequently shown to regulate several functions unrelated to catabolism, and to be both a negative and a positive regulator of transcription. Cell surface cyclic AMP receptors are not included (CYCLIC AMP RECEPTORS), nor are the eukaryotic cytoplasmic cyclic AMP receptor proteins, which are the regulatory subunits of CYCLIC AMP-DEPENDENT PROTEIN KINASES.

A publication issued at stated, more or less regular, intervals.

A bibliographic database that includes MEDLINE as its primary subset. It is produced by the National Center for Biotechnology Information (NCBI), part of the NATIONAL LIBRARY OF MEDICINE. PubMed, which is searchable through NLM's Web site, also includes access to additional citations to selected life sciences journals not in MEDLINE, and links to other resources such as the full-text of articles at participating publishers' Web sites, NCBI's molecular biology databases, and PubMed Central.

A subclass of alpha-adrenergic receptors that mediate contraction of SMOOTH MUSCLE in a variety of tissues such as ARTERIOLES; VEINS; and the UTERUS. They are usually found on postsynaptic membranes and signal through GQ-G11 G-PROTEINS.

"The business or profession of the commercial production and issuance of literature" (Webster's 3d). It includes the publisher, publication processes, editing and editors. Production may be by conventional printing methods or by electronic publishing.

The insertion of recombinant DNA molecules from prokaryotic and/or eukaryotic sources into a replicating vehicle, such as a plasmid or virus vector, and the introduction of the resultant hybrid molecules into recipient cells without altering the viability of those cells.

A large plant family in the order Apiales, also known as Umbelliferae. Most are aromatic herbs with alternate, feather-divided leaves that are sheathed at the base. The flowers often form a conspicuous flat-topped umbel. Each small individual flower is usually bisexual, with five sepals, five petals, and an enlarged disk at the base of the style. The fruits are ridged and are composed of two parts that split open at maturity.

A plant genus of the family ACORACEAE, order Arales, subclass Arecidae most notable for Acorus calamus L. root which contains asarone and has been used in TRADITIONAL MEDICINE.

A plant genus in the family MYRTACEAE, order Myrtales, subclass Rosidae. It is best known for allspice from the dried berry of Pimenta diocia.

A plant species in the PIPERACEAE plant family. It is a common spice on foods and is used medicinally to increase gastrointestinal assimilation of other supplements and drugs. Piperine is a key component. Black pepper is picked unripe and heaped for a few days to ferment. White Pepper is the ripe fruit dehulled by maceration in water.

The myrtle plant family of the order Myrtales. It includes several aromatic medicinal plants such as EUCALYPTUS.

A plant family of the order Arales, subclass Arecidae, class Liliopsida (monocot).

A common spice from fruit of PIPER NIGRUM. Black pepper is picked unripe and heaped for a few days to ferment. White Pepper is the ripe fruit dehulled by maceration in water. Piperine is a key component used medicinally to increase gastrointestinal assimilation of other supplements and drugs.

alpha1-adrenergic receptor subtypes in human peripheral blood lymphocytes. (1/356)

We investigated the expression of alpha1-adrenergic receptor subtypes in intact human peripheral blood lymphocytes using reverse transcription-polymerase chain reaction (RT-PCR) and radioligand binding assay techniques combined with antibodies against the three subtypes of alpha1-adrenergic receptors (alpha1A, alpha1B, and alpha1D). RT-PCR amplified in peripheral blood lymphocytes a 348-bp alpha1A-adrenergic receptor fragment, a 689-bp alpha1B-adrenergic receptor fragment, and a 540-bp alpha1D-adrenergic receptor fragment. Radioligand binding assay with [3H]prazosin as radioligand revealed a high-affinity binding with a dissociation constant value of 0. 65+/-0.05 nmol/L and a maximum density of binding sites of 175. 3+/-20.5 fmol/10(6) cells. The pharmacological profile of [3H]prazosin binding to human peripheral blood lymphocytes was consistent with the labeling of alpha1-adrenergic receptors. Antibodies against alpha1A-, alpha1B-, and alpha1D-receptor subtypes decreased [3H]prazosin binding to a different extent. This indicates that human peripheral blood lymphocytes express the three alpha1-adrenergic receptor subtypes. Of the three different alpha1-adrenergic receptor subtypes, the alpha1B is the most represented and the alpha1D, the least. Future studies should clarify the functional relevance of alpha1-adrenergic receptors expressed by peripheral blood lymphocytes. The identification of these sites may represent a step for evaluating whether they represent a marker of alpha1-adrenergic receptors in cardiovascular disorders or for assessing responses to drug treatment on these receptors. (+info)

Modulation of basal intracellular calcium by inverse agonists and phorbol myristate acetate in rat-1 fibroblasts stably expressing alpha1d-adrenoceptors. (2/356)

In rat-1 fibroblasts stably expressing alpha1d-adrenoceptors BMY 7378, phentolamine, chloroethylclonidine and 5-methyl urapidil decreased basal [Ca2+]i. WB 4101 induced a very small effect on this parameter but when added before the other antagonists it blocked their effect. All these agents inhibited the action of norepinephrine. Phorbol myristate acetate also blocked the effect of norepinephrine and decreased basal [Ca2+]i. Staurosporine inhibited these effects of the phorbol ester. Our results suggest that: (1) alpha1d-adrenoceptors exhibit spontaneous ligand-independent activity, (2) BMY 7378, phentolamine, chloroethylclonidine and 5-methyl urapidil act as inverse agonists and (3) protein kinase C activation blocks spontaneous and agonist-stimulated alpha1d-adrenoceptor activity. (+info)

Characterization of alpha1-adrenoceptor subtypes mediating vasoconstriction in human umbilical vein. (3/356)

1. The present study attempted to characterize pharmacologically the subtypes of alpha-adrenoceptors mediating contractions in human umbilical vein (HUV). 2. HUV rings were mounted in isolated organ baths and cumulative concentration-response curves were constructed for the alpha-adrenoceptor agonists phenylephrine and adrenaline. Adrenaline was more potent than phenylephrine (pD2=7.29 and 6.04 respectively). 3. Isoproterenol exhibited no agonism on KCl pre-contracted HUV rings. Propranolol (1 microM) and rauwolscine (0.1 microM) did not affect the concentration-response curves to adrenaline. These results demonstrate the lack of involvement of functional beta-or alpha2-adrenoceptors in adrenaline-induced vasoconstriction. 4. The non subtype selective alpha1-adrenoceptor antagonist prazosin was evaluated on phenylephrine and adrenaline concentration-response curves. The effects of the competitive alpha1A and alpha1D-adrenoceptor antagonists, 5-methyl urapidil and BMY 7378 and the irreversible alpha1B selective compound chloroethylclonidine (CEC) were also evaluated on adrenaline concentration-response curves. 5. The potencies of prazosin against responses mediated by adrenaline (pA2= 10.87) and phenylephrine (pA2= 10.70) indicate the involvement of prazosin-sensitive functional alpha1-adrenoceptor subtype in vasoconstriction of the HUV. 6. The potencies of 5-methyl urapidil (pA2 = 6.70) and BMY 7378 (pA2= 7.34) were not consistent with the activation of an alpha1A- or alpha1D-adrenoceptor population. 7. Exposure to a relatively low CEC concentration (3 microM) abolished the maximum response to adrenaline suggesting that this response was mediated by an alpha1B-adrenoceptor subtype. 8. We conclude that HUV express a prazosin-sensitive functional alpha1-adrenoceptor resembling the alpha1B-subtype according with the low pA2 values for both 5-methyl urapidil and BMY 7378 and the high sensitivity to CEC. (+info)

Comparison of relaxation responses of cavernous and trigonal smooth muscles from rabbits by alpha1-adrenoceptor antagonists; prazosin, terazosin, doxazosin, and tamsulosin. (4/356)

Alpha1a-adrenergic receptor (AR) primarily mediates the contraction of the prostatic and cavernous smooth muscles. Among clinically available alpha1-AR antagonists for the medical management of benign prostatic hyperplasia (BPH), tamsulosin has a modest selectivity for alpha1A- and alpha1D- over alpha1B-ARs. To compare the effects of various alpha1-AR antagonists on relaxation responses of cavernous and trigonal smooth muscles, isometric tension studies with relatively selective (tamsulosin) and non-selective (prazosin, doxazosin, and terazosin) alpha1A-AR antagonists, were conducted in the cavernous and trigonal muscle strips of rabbits (n=10 each). Tamsulosin had the strongest inhibitory effect on contraction of trigonal smooth muscle among the various alpha1-AR antagonists, and the inhibitory activities of prazosin, doxazosin, and terazosin were not statistically different. All alpha1-AR antagonists caused concentration-dependent relaxation of the cavernous muscle strips. Tamsulosin was shown to have greater potency than prazosin (more than 100-fold), doxazosin (more than 1000-fold), and terazosin (more than 1000-fold), in relaxation of cavernous smooth muscle. In conclusion, tamsulosin might be the most effective drug among the four commonly used alpha1-AR antagonists for the medical management of BPH. Tamsulosin might be a potential substitute for phentolamine in combination with vasoactive agents as an intracavernous injection therapy for patients with erectile dysfunction. (+info)

Canine external carotid vasoconstriction to methysergide, ergotamine and dihydroergotamine: role of 5-HT1B/1D receptors and alpha2-adrenoceptors. (5/356)

The antimigraine drugs methysergide, ergotamine and dihydroergotamine (DHE) produce selective vasoconstriction in the external carotid bed of vagosympathectomized dogs anaesthetized with pentobarbital and artificially respired, but the receptors involved have not yet been completely characterized. Since the above drugs display affinity for several binding sites, including alpha-adrenoceptors and several 5-HT1 and 5-HT2 receptor subtypes, this study has analysed the mechanisms involved in the above responses. Intracarotid (i.c.) infusions during 1 min of methysergide (31-310 microg min(-1)), ergotamine (0.56-5.6 microg min(-1)) or DHE (5.6-31 microg min(-1)) dose-dependently reduced external carotid blood flow (ECBF) by up to 46+/-4, 37+/-4 and 49+/-5%, respectively. Blood pressure and heart rate remained unchanged. The reductions in ECBF by methysergide were abolished and even reversed to increases in animals pre-treated with GR127935 (10 microg kg(-1), i.v.). The reductions in ECBF by ergotamine and DHE remained unchanged in animals pre-treated (i.v.) with prazosin (300 microg kg(-1)), but were partly antagonized in animals pre-treated with either GR127935 (10 or 30 microg kg(-1)) or yohimbine (1000 microg kg(-1)). Pre-treatment with a combination of GR127935 (30 microg kg(-1)) and yohimbine (1000 microg kg(-1)) abolished the responses to both ergotamine and DHE. The above doses of antagonists were shown to produce selective antagonism at their respective receptors. These results suggest that the external carotid vasoconstrictor responses to methysergide primarily involve 5-HT1B/1D receptors, whereas those to ergotamine and DHE are mediated by 5-HT1B/1D receptors as well as alpha2-adrenoceptors. (+info)

alpha1-adrenergic receptor activation of c-fos expression in transfected rat-1 fibroblasts: role of Ca2+. (6/356)

alpha1-Adrenergic receptors mediate mitogenic responses and increase intracellular free Ca2+ ([Ca2+]i) in vascular smooth muscle cells. Induction of c-fos is a critical early event in cell growth; expression of this gene is regulated by a number of signaling pathways including Ca2+. We wondered whether Ca2+ signaling plays a critical role in the induction of c-fos gene by alpha1-adrenergic receptors. Using stably transfected rat-1 fibroblasts, we confirmed that PE induced c-fos mRNA expression in a time- and dose-dependent manner, and also increased [Ca2+]i (measured with Fura-2 AM). These responses were blocked by the alpha1-adrenergic receptor antagonist doxazosin. Both intracellular Ca2+ chelation (using BAPTA/AM) and extracellular Ca2+ depletion (using EGTA) significantly inhibited PE-induced c-fos expression by alpha1A and alpha1B receptors. Brief (1-min) stimulation of alpha1A and alpha1B receptors with PE did not maximally induce c-fos expression, suggesting that a sustained increase in [Ca2+]i due to Ca2+ influx is required. The calmodulin (CaM) antagonists, R24571, W7, and trifluoperazine, but not the CaM-dependent protein kinases inhibitor KN-62, significantly inhibited c-fos induction by alpha1A and alpha1B receptors. Neither inhibition of protein kinase C nor inhibition of adenylyl cyclase modified c-fos induction by PE. These results suggest that alpha1-adrenergic receptor-induced c-fos expression in rat-1 cells is dependent on a Ca2+/CaM-associated pathway. (+info)

In vivo measurement by [3H]Tamsulosin of alpha1 adrenoceptors in rat tissues in relation to the pharmacokinetics. (7/356)

The present study was undertaken to simultaneously measure alpha1 adrenoceptors in rat tissues by [3H]tamsulosin in vivo. In vivo specific [3H]tamsulosin binding was observed in the prostate, vas deferens, aorta, submaxillary gland, spleen, heart, lung, and kidney after i.v. injection of the ligand but not in the cerebral cortex and liver. Specific [3H]tamsulosin binding in the kidney, lung, heart, and spleen was greatest at 3 min after i.v. injection and declined rapidly with the disappearance of [3H]tamsulosin from the plasma. On the other hand, [3H]tamsulosin binding in the prostate and aorta peaked at 10 to 60 min after i.v. injection, and a considerable level of specific binding in both tissues persisted up to 240 min. The most sustained binding of [3H]tamsulosin occurred in the submaxillary gland. In vivo specific [3H]tamsulosin binding in rat tissues was effectively inhibited by the coinjection of low doses of unlabeled tamsulosin, prazosin, and terazosin with the radioligand but not by relatively high doses of yohimbine and propranolol. Based on estimated ID50 values, in vivo inhibitory effect of tamsulosin compared with prazosin was 5 to 14 times greater in rat tissues except the spleen, which showed 1.6 times less potent than prazosin. From ratios of ID50 (spleen) to ID50 (submaxillary gland) or ID50 (prostate), tamsulosin was 9 and 19 times, respectively, greater than prazosin in selectivity of alpha1 adrenoceptors in the submaxillary gland and prostate versus the spleen, respectively, suggesting that tamsulosin binds to alpha1A subtype with higher affinity than alpha1B subtype in vivo. The present study suggests that [3H]tamsulosin is a useful radioligand for in vivo measurement of alpha1 adrenoceptors in rat tissues. (+info)

Naftopidil, a novel alpha1-adrenoceptor antagonist, displays selective inhibition of canine prostatic pressure and high affinity binding to cloned human alpha1-adrenoceptors. (8/356)

The pharmacological profiles of the alpha1-adrenoceptor antagonists naftopidil, tamsulosin and prazosin were studied in an anesthetized dog model that allowed the simultaneous assessment of their antagonist potency against phenylephrine-mediated increases in prostatic pressure and mean blood pressure. The intravenous administration of each of these compounds dose-dependently inhibited phenylephrine-induced increases in prostatic pressure and mean blood pressure. To further assess the ability of the three compounds to inhibit phenylephrine-induced responses, the doses required to produce a 50% inhibition of the phenylephrine-induced increases in prostatic and mean blood pressure and the selectivity index obtained from the ratio of those two doses were determined for each test compound. Forty minutes after the intravenous administration of naftopidil, the selectivity index was 3.76, and those of tamsulosin and prazosin were 1.23 and 0.61, respectively. These findings demonstrated that naftopidil selectively inhibited the phenylephrine-induced increase in prostatic pressure compared with mean blood pressure in the anesthetized dog model. The selectivity of naftopidil for prostatic pressure was the most potent among the test compounds. In addition, using cloned human alpha1-adrenoceptor subtypes, naftopidil was selective for the alpha1d-adrenoceptor with approximately 3- and 17-fold higher affinity than for the alpha1a- and alpha1b-adrenoceptor subtypes, respectively. The selectivity of naftopidil for prostatic pressure may be attributable to its high binding affinity for alpha1a- and alpha1d-adrenoceptor subtypes. (+info)

Systemic Alpha-1 adrenergic receptor antagonists have been implicated in Intraoperative Floppy Iris Syndrome (IFIS). Bunazosin ... Bunazosin (INN) is an alpha 1 antagonist. Bunazosin was initially developed to treat benign prostatic hyperplasia (BPH). It has ...

https://en.wikipedia.org/wiki/Bunazosin

It features competitive antagonist activity at 5-HT serotonin receptor in Sprague-Dawley rat stomachs. It exhibits binding ... It was found to be an active Alpha-1 adrenergic receptor agonist in rabbit ear arteries. It has binding affinity towards 5-HT2C ... 2C-H exhibits agonist activity in vitro at human trace amine associated receptor 1 expressed in RD-HGA16 CHO-K1 cells ... affinity against rat 5-hydroxytryptamine 2C receptors using [3H]mesulergine as a radioligand. As of October 31, 2016; 2C-H is a ...

https://en.wikipedia.org/wiki/2C-H

... a potent and selective alpha1b adrenergic receptor antagonist ". Journal of Medicinal Chemistry. 41 (8): 1205-8. doi:10.1021/ ... L-765,314 is a drug which acts as a potent and selective antagonist for the Alpha-1 adrenergic receptor subtype α1B. It has ... Yang XP, Chiba S (August 2002). "Effects of L-765,314, a selective and potent alpha 1B-adrenoceptor antagonist, on periarterial ... Hillman KL, Doze VA, Porter JE (June 2007). "Alpha1A-adrenergic receptors are functionally expressed by a subpopulation of ...

https://en.wikipedia.org/wiki/L-765,314

Additionally, l-THP displays significant binding to 5-HT1A and alpha-2 adrenergic receptors. In the case of 5-HT1A receptors, l ... at which it functions as an antagonist, and GABA-A receptors, through positive allosteric modulation. ... alpha adrenergic and serotonin receptors. The Ki values for l-THP at D1 and D2 dopamine receptors are approximately 124 nM (D1 ... Along with dopamine receptors, l-THP has been reported to interact with a number of other receptor types, including alpha-1 ...

https://en.wikipedia.org/wiki/Tetrahydropalmatine

Angiotensin receptor blockers (ARB) and calcium channel blockers (CCB), alpha- and beta- adrenergic receptor blockers ... Drugs that act as selective antagonists at specific alpha-1 adrenergic receptor subtypes have also been developed. Benign ... Silodosin shows high affinity and selectivity for alpha-1a adrenergic receptors found in the prostate which ensures that it ... DrugDigest - Alpha blockers RxList.com - Tamsulosin alpha-Adrenergic+Blockers at the US National Library of Medicine Medical ...

https://en.wikipedia.org/wiki/Alpha-1_blocker

This is often done through the use of GnRH analogues or agents that block the receptors that androgens act at, such as ... In general, treatment often begins with an alpha-1 adrenergic receptor antagonist medication such as tamsulosin, which reduces ... GnRH receptor agonists, such as leuprorelin and goserelin, were subsequently developed and used to treat prostate cancer. ... or male chronic pelvic pain syndrome is treated by a large variety of modalities including the medications alpha blockers, ...

https://en.wikipedia.org/wiki/Prostate

... is a compound which acts as an antagonist at the α1B-adrenergic receptor. It was one of the first selective antagonists ... April 1998). "Search for selective antagonists at alpha 1-adrenoreceptors: neutral or negative antagonism?". Farmaco. 53 (4): ... developed for this receptor and was invented in 1969, but is still commonly used in research into adrenergic receptors, ... March 2000). "Alpha 1-adrenoreceptor antagonists bearing a quinazoline or a benzodioxane moiety". Pharmaceutica Acta Helvetiae ...

https://en.wikipedia.org/wiki/WB-4101

Administering a norepinephrine receptor agonist (a substance that initiates a cell response when it binds with a receptor) to ... Noradrenergic antagonists were not prescribed for the purposes of slowing the recovery of memory. Rather, these findings are ... The alpha-1 adrenergic receptor is specifically implicated. Although it has not yet been thoroughly investigated, there is ... Conversely, the administration of norpinephrine antagonists slowed recovery, and could lead to the reinstatement of deficits ...

https://en.wikipedia.org/wiki/Post-traumatic_amnesia

... relationships between alpha-adrenergic activity and binding affinity of alpha-adrenoceptor agonists and antagonists". Journal ... The α1-adrenergic receptor has several general functions in common with the α2-adrenergic receptor, but also has specific ... Note that only active muscle α1-adrenergic receptors will be blocked. Resting muscle will not have its α1-adrenergic receptors ... In contrast to α2-adrenergic receptors, α1-adrenergic-receptors in the arterial vasculature of skeletal muscle are more ...

https://en.wikipedia.org/wiki/Alpha-1_adrenergic_receptor

Antagonists L-765,314 Risperidone Alpha-1B adrenergic receptor has been shown to interact with AP2M1. A role in regulation of ... 1994). "Cloning, expression and characterization of human alpha adrenergic receptors alpha 1a, alpha 1b and alpha 1c". Biochem ... The alpha-1B adrenergic receptor (α1B adrenoreceptor), also known as ADRA1B, is an alpha-1 adrenergic receptor, and also ... 2003). "The adaptor complex 2 directly interacts with the alpha 1b-adrenergic receptor and plays a role in receptor endocytosis ...

https://en.wikipedia.org/wiki/Alpha-1B_adrenergic_receptor

Adrenergic receptor Alpha blocker Antagonist Beta blocker List of adrenergic drugs Propanolol Sympathetic nervous system ... An adrenergic antagonist is a drug that inhibits the function of adrenergic receptors. There are five adrenergic receptors, ... Adrenergic competitive antagonists are shorter lasting than the other two types of antagonists. While the antagonists for alpha ... There are few non-cardiovascular uses for adrenergic antagonists. Alpha-adrenergic antagonists are also used for treatment of ...

https://en.wikipedia.org/wiki/Adrenergic_antagonist

Cleary L, Murad K, Bexis S, Docherty JR (2005). "The alpha (1D)-adrenoceptor antagonist BMY 7378 is also an alpha (2C)- ... The alpha-2C adrenergic receptor (α2C adrenoceptor), also known as ADRA2C, is an alpha-2 adrenergic receptor, and also denotes ... "Human alpha 2-adrenergic receptor subtype distribution: widespread and subtype-selective expression of alpha 2C10, alpha 2C4, ... "Entrez Gene: ADRA2C adrenergic, alpha-2C-, receptor". "ADRA2C adrenoceptor alpha 2C [Homo sapiens (human)] - Gene - NCBI". www. ...

https://en.wikipedia.org/wiki/Alpha-2C_adrenergic_receptor

... seventh hydrophobic domain of the alpha 2 adrenergic receptor increases its affinity for a family of beta receptor antagonists ... The alpha-2A adrenergic receptor (α2A adrenoceptor), also known as ADRA2A, is an α2 adrenergic receptor, and also denotes the ... the sites for beta-adrenergic receptor kinase-mediated phosphorylation and desensitization of the alpha 2A-adrenergic receptor ... alpha-2A-, receptor". Hein, Lutz; Altman, John D.; Kobilka, Brian K. (1999). "Two functionally distinct α2-adrenergic receptors ...

https://en.wikipedia.org/wiki/Alpha-2A_adrenergic_receptor

Labetalol (koristi se za hipertenziju; it is a mixed alpha/beta adrenergic antagonist)[4] ... adrenergički receptor je G protein-spregnuti receptor koji vezuje Gq heterotrimerni G protein. Postoje tri visoko homologna ... Adrenergički receptor. Literatura[уреди]. *↑ Woodman OL, Vatner SF (1987). „Coronary vasoconstriction mediated by α1- and α2- ... Kalcijum-detektujući receptor • GABA B (1, 2) • Glutamatni receptor (Metabotropni glutamat (1, 2, 3, 4, 5, 6, 7, 8)) • GPRC6A ...

https://sr.wikipedia.org/wiki/Alfa-1_adrenergički_receptor

Alpha-2 adrenergic antagonist Increase blood pressure Yohimbine[111] Prognosis[edit]. POTS has a favorable prognosis when ... alpha-2 adrenergic receptor agonist Decreases blood pressure and sympathetic nerve traffic. Clonidine,[12] Methyldopa[12] ... Vasopressin receptor antagonist Helps retain water, Increase blood volume Desmopressin (DDAVP) [95] ... Especially elevations of adrenergic α1 receptor is associated with symptoms severity in patients with POTS.[55] ...

https://en.wikipedia.org/wiki/Postural_orthostatic_tachycardia_syndrome?fbclid=IwAR2m8ZJtGrPxMde9Kcig0hirlDDwZlopEkcXtoRcEKOdsmSvNO64truK5qc

However, the most common type of alpha blocker is usually an α1 blocker. Non-selective α-adrenergic receptor antagonists ... are a class of pharmacological agents that act as antagonists on α-adrenergic receptors (α-adrenoceptors). Historically, alpha- ... "Alpha-Adrenoceptor Antagonists (Alpha-Blockers)" (PDF). British Hypertension Society. Archived from the original (PDF) on 2017- ... "CV Pharmacology , Alpha-Adrenoceptor Antagonists (Alpha-Blockers)". cvpharmacology.com. Retrieved 2017-11-15. Knott, Laurence ( ...

https://en.wikipedia.org/wiki/Alpha_blocker

... ketanserin such as ritanserin are more selective 5-HT2A receptor antagonists with low affinity for alpha-adrenergic receptors. ... Silent antagonistsEdit. *Trazodone is a potent 5-HT2A antagonist, as well as an antagonist on other serotonin receptors. ... G-protein coupled receptor activity. • virus receptor activity. • signal transducer activity. • drug binding. • G-protein alpha ... The mammalian 5-HT2A receptor is a subtype of the 5-HT2 receptor that belongs to the serotonin receptor family and is a G ...

https://en.m.wikipedia.org/wiki/5-HT2A_receptor

ISBN 978-0-443-06911-6. Alpha receptors illustrated The Adrenergic Receptors Adrenoceptors - IUPHAR/BPS guide to pharmacology ... "Functional studies of the first selective beta 3-adrenergic receptor antagonist SR 59230A in rat brown adipocytes". Molecular ... Beta adrenergic receptor kinase Beta adrenergic receptor kinase-2 There is no α1C receptor. There was a subtype known as C, but ... and β-Adrenergic Receptors Theory of receptor activation Desensitization of β1 receptors. ...

https://en.wikipedia.org/wiki/Adrenergic_receptor

1994). „Cloning, expression and characterization of human alpha adrenergic receptors alpha 1a, alpha 1b and alpha 1c.". Biochem ... Kyprianou N, Benning CM (2000). „Suppression of human prostate cancer cell growth by alpha1-adrenoceptor antagonists doxazosin ... 1995). „Cloning of the human alpha 1d-adrenergic receptor and inducible expression of three human subtypes in SK-N-MC cells.". ... Cell surface expression of alpha1D-adrenergic receptors is controlled by heterodimerization with alpha1B-adrenergic receptors ...

https://sr.wikipedia.org/wiki/Alfa-1D_adrenergički_receptor

... has been shown to interact with Src. Other adrenergic receptors Alpha-1 adrenergic receptor Alpha-2 ... Nisoli E, Tonello C, Landi M, Carruba MO (1996). "Functional studies of the first selective β3-adrenergic receptor antagonist ... The beta-3 adrenergic receptor (β3-adrenoceptor), also known as ADRB3, is a beta-adrenergic receptor, and also denotes the ... adrenergic receptor antagonists". The Journal of Pharmacology and Experimental Therapeutics. 290 (2): 649-55. PMID 10411574. ...

https://en.wikipedia.org/wiki/Beta-3_adrenergic_receptor

See also receptor antagonist) alpha-2 receptors. Agonists of alpha-2 receptors in the vascular smooth muscle lead to ... alpha-2 and beta-2 adrenergic receptors,. The main endogenous agonist of these cell receptors is norepinephrine (NE). The ... adrenergic receptors exert opposite physiologic effects in the vascular smooth muscle under activation: alpha-1 receptors. ... Antagonists of alpha-1 receptors (doxazosin, prazosin) cause vasodilation (a decrease in vascular smooth muscle tone with ...

https://en.wikipedia.org/wiki/Vascular_smooth_muscle

... denotes selective antagonist to the receptor. compound-6FA, PAM at intracellular binding site Beta-2 adrenergic receptor has ... Other adrenergic receptors Alpha-1 adrenergic receptor Alpha-2 adrenergic receptor Beta-1 adrenergic receptor Beta-3 adrenergic ... The beta-2 adrenergic receptor (β2 adrenoreceptor), also known as ADRB2, is a cell membrane-spanning beta-adrenergic receptor ... "Insulin stimulates sequestration of beta-adrenergic receptors and enhanced association of beta-adrenergic receptors with Grb2 ...

https://en.wikipedia.org/wiki/Beta-2_adrenergic_receptor

... is an α1-adrenergic receptor antagonist. Alpha blocker Tham TC, Guy S, Shanks RG, Harron DW (April 1992). "Dose-dependent alpha ... 1-adrenoceptor antagonist activity of the anti-arrhythmic drug, abanoquil (UK-52,046), without reduction in blood pressure in ...

https://en.wikipedia.org/wiki/Abanoquil

ISBN 9789290814955 Doxey, JC; Lane AC; Roach AG; Virdee NK (Feb 1984). "Comparison of the alpha-adrenoceptor antagonist ... Among other alkaloids is corynanthine, an alpha-1 adrenergic receptor blocker and raubasine. Extracts from the bark of yohimbe ...

https://en.wikipedia.org/wiki/Pausinystalia_johimbe

... is a calcium channel blocker and α1-adrenergic receptor antagonist used as an antihypertensive. Sugimoto T, Hosoki K ... Karasawa T (July 1995). "Relative contribution of alpha 1-adrenoceptor blocking activity to the hypotensive effect of the novel ... calcium antagonist monatepil". Journal of Cardiovascular Pharmacology. 26 (1): 55-60. doi:10.1097/00005344-199507000-00009. ...

https://en.wikipedia.org/wiki/Monatepil

... is a calcium channel blocker and a1-adrenergic receptor antagonist. Boer R, Grassegger A, Schudt C, Glossmann H ( ... Niguldipine binds with very high affinity to Ca2+ channels and to a subtype of alpha 1-adrenoceptors". European Journal of ...

https://en.wikipedia.org/wiki/Niguldipine

Antagonists A-315456 BMY 7378 (also α2C antagonist) Adrenergic receptor GRCh38: Ensembl release 89: ENSG00000171873 - Ensembl, ... This gene encodes alpha-1D-adrenergic receptor. Similar to alpha-1B-adrenergic receptor gene, this gene comprises 2 exons and a ... 1994). "Cloning, expression and characterization of human alpha adrenergic receptors alpha 1a, alpha 1b and alpha 1c". Biochem ... The alpha-1D adrenergic receptor (α1D adrenoreceptor), also known as ADRA1D, is an alpha-1 adrenergic receptor, and also ...

https://en.wikipedia.org/wiki/Alpha-1D_adrenergic_receptor

... also acts as a moderate affinity 5-HT1A receptor antagonist, and low affinity CB1 receptor antagonist). Clonidine (also I1 ... The alpha-2 (α2) adrenergic receptor (or adrenoceptor) is a G protein-coupled receptor (GPCR) associated with the Gi ... signal through the α2-adrenergic receptor in the central and peripheral nervous systems. The α2A adrenergic receptor is ... where it sits alongside the more plentiful α1-adrenergic receptor. The α2-adrenergic receptor binds both norepinephrine ...

https://en.wikipedia.org/wiki/Alpha-2_adrenergic_receptor

Antagonists: Ryanodine locks the RyRs at half-open state at nanomolar concentrations, yet fully closes them at micromolar ... Non-mammalian vertebrates typically express two RyR isoforms, referred to as RyR-alpha and RyR-beta. Many invertebrates, ... Ryanodine receptors are similar to the inositol trisphosphate (IP3) receptor, and stimulated to transport Ca2+ into the cytosol ... It has been shown that calcium release from a number of ryanodine receptors in a ryanodine receptor cluster results in a ...

https://en.wikipedia.org/wiki/Ryanodine_receptor

BMY-7,378 is a 5-HT1A receptor weak partial agonist/antagonist and α1D-adrenergic receptor antagonist. Goetz AS, King HK, Ward ... "BMY 7378 is a selective antagonist of the D subtype of alpha 1-adrenoceptors". European Journal of Pharmacology. 272 (2-3): R5- ...

https://en.wikipedia.org/wiki/BMY-7378

Hesketh PJ (Jul 2001). "Potential role of the NK1 receptor antagonists in chemotherapy-induced nausea and vomiting". Supportive ... Azzolina A, Bongiovanni A, Lampiasi N (Dec 2003). "Substance P induces TNF-alpha and IL-6 production through NF kappa B in ... administered through the non-adrenergic, non-cholinergic nervous system (branch of the vagal system). ... ReceptorEdit. The endogenous receptor for substance P is neurokinin 1 receptor (NK1-receptor, NK1R).[8] It belongs to the ...

https://en.m.wikipedia.org/wiki/Substance_P

... increase beta adrenergic receptors while decreasing alpha adrenergic receptors- which results in increased levels of ... D2 receptor antagonists (prolactin releasers) (e.g., domperidone, metoclopramide, risperidone, haloperidol, chlorpromazine, ... Receptor/signaling modulators. Androgens and antiandrogens. Estrogen receptor modulators. Progesterone receptor modulators. ... norepinephrine due to lack of alpha-2 receptor negative feedback and decreased fat accumulation due to epinephrine/ ...

https://en.wikipedia.org/wiki/Androgen

Glutamate receptor antagonist（英語：Excitatory amino acid antagonist） (NMDA（英語：NMDA receptor antagonist）) ... 腎上腺素受體激動藥 (α（英語：Alpha-adrenergic agonist） ... Cannabinoid receptor antagonist（英語：Cannabinoid receptor antagonist）. *Endocannabinoid enhancer（英語：Endocannabinoid enhancer） ( ... 血清素受體拮抗劑（英語：Serotonin antagonist） (5-HT3（

https://zh.wikipedia.org/zh-hk/肾上腺素

... and alpha-2 adrenoceptor antagonist activity.[5] D1 receptor stimulation activates adenylyl cyclase and raises intracellular ... Hughes AD, Sever PS (1989). "Action of fenoldopam, a selective dopamine (DA1) receptor agonist, on isolated human arteries". ... receptors in LLC-PK1 cells". J. Pharmacol. Exp. Ther. 258 (1): 193-8. PMID 1677038.. .mw-parser-output cite.citation{font-style ... 1-59541-101-1. .. *^ a b Nichols AJ, Ruffolo RR, Brooks DP (June 1990). "The pharmacology of fenoldopam". Am. J. Hypertens. 3 ( ...

https://en.wikipedia.org/wiki/Fenoldopam

February 2000). "Agonist and antagonist actions of yohimbine as compared to fluparoxan at alpha(2)-adrenergic receptors (AR)s, ... Yohimbine is an alpha-2 adrenergic antagonist, and has been used in a variety of research projects. It is a veterinary drug ... Yohimbine has high affinity for the α2-adrenergic receptor, moderate affinity for the α1 receptor, 5-HT1A, 5-HT1B, 5-HT1D, 5-HT ... and dopamine D3 receptors.[31][32] It behaves as an antagonist at α1-adrenergic, α2-adrenergic, 5-HT1B, 5-HT1D, 5-HT2A, 5-HT2B ...

https://en.wikipedia.org/wiki/Yohimbine

SoRI-20040; Antagonist-like: SoRI-20041. *Adrenergic release blockers: Bethanidine. *Bretylium. *Guanadrel ... See also: Receptor/signaling modulators • Monoamine reuptake inhibitors • Adrenergics • Dopaminergics • Serotonergics • ... Clortermine (Voranil) was developed by Ciba in the 1960s[1] and is an anorectic drug of the amphetamine class.[2] It is the 2- ... InChI=1S/C10H14ClN/c1-10(2,12)7-8-5-3-4-6-9(8)11/h3-6H,7,12H2,1-2H3 Y ...

https://en.wikipedia.org/wiki/Clortermine

... a specific antagonist radioligand for brain alpha 2-adrenergic receptors". European Journal of Pharmacology. 76 (4): 461-4. ... Rauvolscin deluje predominantno kao antagonist α2-adrenergičnog receptora.[2] On takođe deluje kao parcijalni agonist 5-HT1A ... Wainscott DB, Sasso DA, Kursar JD, Baez M, Lucaites VL, Nelson DL (1998). „[3H]Rauwolscine: an antagonist radioligand for the ... Perry BD, U'Prichard DC (1981). „[3H]rauwolscine (alpha-yohimbine): ...

https://sr.wikipedia.org/wiki/Rauvolscin

NMDA receptor antagonists (e.g., ketamine, dextromethorphan, methadone). *Opioids (e.g., hydrocodone, morphine, oxycodone, ... adrenergic, dopamine D1 and D2, muscarinic, GABA, histaminergic H1, serotonin 5-HT2, and N-methyl-D-aspartate). Inhibitory ... σ receptors, IC50=145μM. Pharmacokinetics[edit]. The pharmacokinetics of lamotrigine follow first-order kinetics, with a half- ... It also blocks L-, N-, and P-type calcium channels and has weak 5-hydroxytryptamine-3 (5-HT3) receptor inhibition. These ...

https://en.wikipedia.org/wiki/Lamotrigine

In addition to its actions as an antihistamine, captodiamine has been found to act as a 5-HT2C receptor antagonist and σ1 ... Alpha-1 blockers (e.g., prazosin). *Alpha-2 agonists (e.g., clonidine, dexmedetomidine, guanfacine) ... See also: Receptor/signaling modulators • Nicotinic acetylcholine receptor modulators • Acetylcholine metabolism/transport ... Antagonists: AR-A000002. *Beta blockers (e.g., alprenolol, carteolol, isamoltane, oxprenolol, penbutolol, propranolol, ...

https://en.wikipedia.org/wiki/Captodiame

H2-receptor antagonists, cytoprotectants, prostaglandin analogues. *Lower digestive tract: laxatives, antispasmodics, ... Anti-glaucoma: adrenergic agonists, beta-blockers, carbonic anhydrase inhibitors/hyperosmotics, cholinergics, miotics, ... antifungal, alkalinizing agents, quinolones, antibiotics, cholinergics, anticholinergics, antispasmodics, 5-alpha reductase ... dopamine antagonists, antihistamines, cholinergics, anticholinergics, emetics, cannabinoids, and 5-HT (serotonin) antagonists. ...

https://en.m.wikipedia.org/wiki/Pharmaceutical

SoRI-20040; Antagonist-like: SoRI-20041. *Adrenergic release blockers: Bethanidine. *Bretylium. *Guanadrel ... See also: Receptor/signaling modulators • Monoamine reuptake inhibitors • Adrenergics • Dopaminergics • Serotonergics • ... It is most efficacious as a releaser of norepinephrine, with an ec50 of 109/41.4/5246nM for DA/NE/5HT, respectively .[1] It has ... N,alpha-Diethylphenylethylamine. *N-Ethylbuphedrone. *N-Ethylhexedrone. *N,N-Dimethylphenethylamine. *Naphthylamphetamine. * ...

https://en.wikipedia.org/wiki/4-Benzylpiperidine

These substances are neuroleptic and are either an antagonist of dopamine at the postsynaptic level at the D2 receptor site or ... alpha-Ergosine *IUPAC name: Ergotaman-3',6',18-trione, 12'-hydroxy-2'-methyl-5'-(2-methylpropyl)-, (5'-alpha)- ... Similarly, ergoline alkaloids have been shown to exhibit both 5-HT agonist and antagonist behaviors for multiple receptors, ... a 5-HT2A/2C antagonist.[15] The selectivity and affinity of ergolines for certain 5-HT receptors can be improved by introducing ...

https://en.wikipedia.org/wiki/Ergoline

5-Alpha-reductase inhibitor. *Angiotensin II receptor antagonist. *ACE inhibitor. *Alpha-adrenergic agonist ... For receptors, these activities include agonist, antagonist, inverse agonist, or modulator. Enzyme target mechanisms include ...

https://en.m.wikipedia.org/wiki/Drug_class

Meta-[I-131]iodobenzylguanidine is a radio-labeled analog of the adrenergic blocking agent guanethidine.[37] Radioactivity is ... 80 (1): 220-223. doi:10.1210/jc.80.1.220. PMID 7829615.. *^ a b c d e f g Greer, Monte A.; Goodman, Gay; Pleus, Richard C.; ... doi:10.1007/s00259-008-0883-1. PMID 18670773. S2CID 81465.. *^ Nuclear medicine in thyroid cancer management: a practical ... 978-1-59624-021-6. .. *^ Council, National Research (11 February 2003). Exposure of the American Population to Radioactive ...

https://en.wikipedia.org/wiki/Iodine-131

Nasal steroids, antihistamines such as diphenhydramine, cromolyn sodium, leukotriene receptor antagonists such as montelukast, ... For nocturnal symptoms, intranasal corticosteroids can be combined with nightly oxymetazoline, an adrenergic alpha-agonist, or ... Other measures that may be used second line include: decongestants, cromolyn, leukotriene receptor antagonists, and ... and leukotriene receptor antagonists such as montelukast.[5] Medications are, however, not sufficient or are associated with ...

https://en.m.wikipedia.org/wiki/Allergic_rhinitis

... an alpha-2 adrenergic agonist Irbesartan, an angiotensin II receptor antagonist Propranolol, a sympatholytic beta blocker ... Vasopressin receptor antagonists, such as conivaptan Acetazolamide, a carbonic anhydrase inhibitor Lithium was previously used ... Such medications include antipsychotics, antidepressants, anticonvulsants, alpha agonists and anticholinergics. It should also ... and the effects of an adjunctive angiotensin-II receptor blocking drug (irbesartan)". The Australian and New Zealand Journal of ...

https://en.wikipedia.org/wiki/Primary_polydipsia

NMDA receptor antagonists (e.g., ketamine, dextromethorphan, methadone). *Opioids (e.g., hydrocodone, morphine, oxycodone, ... In addition, the TCAs interact with adrenergic receptors. This interaction seems to be critical for increased availability of ... Alpha-1 blockers (e.g., prazosin). *Alpha-2 agonists (e.g., clonidine, dexmedetomidine, guanfacine) ... Norepinephrine interacts with postsynaptic α and β adrenergic receptor subtypes and presynaptic α2 autoreceptors. The α2 ...

https://en.wikipedia.org/wiki/Serotonin-norepinephrine_reuptake_inhibitor

SoRI-20040; Antagonist-like: SoRI-20041. *Adrenergic release blockers: Bethanidine. *Bretylium. *Guanadrel ... 2,5-DMA is the alpha-methyl homologue of 2C-H and could be called "DOH" under the DO naming scheme. ... See also: Receptor/signaling modulators • Monoamine reuptake inhibitors • Adrenergics • Dopaminergics • Serotonergics • ... InChI=1S/C11H17NO2/c1-8(12)7-9-5-4-6-10(13-2)11(9)14-3/h4-6,8H,7,12H2,1-3H3 Y ...

https://en.wikipedia.org/wiki/Dimethoxyamphetamine

Adrenergic stimulants, such as ephedrine, may act by directly binding and activating the receptors that norepinephrine and ... but other drugs such as CB1 receptor antagonists exist in this class too.[25][26] Drugs used to treat sleep disorders such as ... on adrenergic receptors.[83] It is most usually marketed as the hydrochloride or sulfate salt. ... adrenergic receptors), producing sympathomimetic effects. Some drugs, such as MDMA and derivatives may decrease regulatory ...

https://en.wikipedia.org/wiki/Stimulants

5-HT2A receptor antagonist.. *Propranolol - Sympatholytic, beta blocker.. *Clonidine - Sympatholytic, α2-adrenergic receptor ... Prazosin - Sympatholytic, alpha blocker.. Comorbidity[edit]. GAD and depression[edit]. In the National Comorbidity Survey (2005 ... 10 (1): 125-62.. *^ a b c d e f Hoyer, Jürgen; van der Heiden, Colin; Portman, Michael E. (February 2011). "Psychotherapy for ... 5-HT1A receptor partial agonists, such as buspirone and tandospirone.. *Serotonin-norepinephrine reuptake inhibitors (SNRIs), ...

https://en.wikipedia.org/wiki/Generalized_anxiety

SoRI-20040; Antagonist-like: SoRI-20041. *Adrenergic release blockers: Bethanidine. *Bretylium. *Guanadrel ... See also: Receptor/signaling modulators • Monoamine reuptake inhibitors • Adrenergics • Dopaminergics • Serotonergics • ... It is structurally similar to MDA, but without the methyl group at the alpha position. ... However, if MDPEA were either used in high enough of doses (e.g., 1-2 grams), or in combination with a monoamine oxidase ...

https://en.wikipedia.org/wiki/3,4-Methylenedioxyphenethylamine

See also: Receptor/signaling modulators • GABA receptor modulators • GABA metabolism/transport modulators ... Alpha-1 blockers (e.g., prazosin). *Alpha-2 agonists (e.g., clonidine, dexmedetomidine, guanfacine) ... Serotonin antagonists and reuptake inhibitors *Etoperidone. *Nefazodone. *Trazodone. *Tricyclic antidepressants *Amitriptyline ... 240.387 g·mol−1 Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). ...

https://en.wikipedia.org/wiki/Validolum

Alpha-2 adrenergic receptor） (A, B, C) · β1 · β2 · β3 ... selective antagonist with high affinity at the 5-HT4 receptor. ... 腺苷酸（英语：Adenosine receptor） (A1, A2A, A2B, A3) · P2Y（英语：P2Y receptor） (1（英语：P2RY1）, 2（英语：P2RY2）, 4（英语：P2RY4）, 5（英语：LPAR6）, 6（英语： ... 乙酰胆碱 (M1, M2, M3, M4, M5) · 多巴胺（英语：Dopamine receptor） (D1, D2, D3, D4, D5) · 组织胺（英语：Histamine receptor） (H1, H2, H3, H4) · 褪黑素（ ... 卷曲受体 (1（英语：FZD1）, 2（英语：FZD2）, 3（英语：FZD3）, 4（英语：FZD4）, 5（英语：FZD5）, 6（英语：FZD6）, 7（英语：FZD7）, 8

https://zh.wikipedia.org/wiki/5-HT4受體

However, β2 adrenergic receptor agonists are not recommended to treat ARDS because it may reduce survival rates and precipitate ... Recombinant activated protein C (drotrecogin alpha) was originally introduced for severe sepsis (as identified by a high APACHE ... and H2 antagonist are useful in a person with risk factors of developing upper gastrointestinal bleeding (UGIB) such as on ... doi:10.1038/s41419-019-2015-1. PMC 6791888. PMID 31611560.. *^ a b c d e f g h i j k l m n o p q r s t u v w x y Dellinger RP, ...

https://en.wikipedia.org/wiki/Sepsis

SoRI-20040; Antagonist-like: SoRI-20041. *Adrenergic release blockers: Bethanidine. *Bretylium. *Guanadrel ... See also: Receptor/signaling modulators • Monoamine reuptake inhibitors • Adrenergics • Dopaminergics • Serotonergics • ... Antagonists: AR-A000002. *Beta blockers (e.g., alprenolol, carteolol, isamoltane, oxprenolol, penbutolol, propranolol, ... Antagonists: ABT-354. *Atypical antipsychotics (e.g., aripiprazole, asenapine, clorotepine, clozapine, fluperlapine, ...

https://en.wikipedia.org/wiki/3,4-methylenedioxy-N-ethylamphetamine

It is an alpha-2 adrenergic agonist that causes sedation and does have some analgesic properties. It has minimal effect on ... Midazolam[5] is a benzodiazepine that acts by stimulating inhibitory GABA receptors. Effects are seen within 2-5 minutes, and ... Additionally, some agents have antagonists, reversal agents, that can be used to reverse the effects or reduce the amount of ... Propofol[5] is a non-barbiturate derivative that is thought to act by stimulating inhibitory GABA receptors and blocking ...

https://en.wikipedia.org/wiki/Conscious_sedation

Although their primary mechanisms of action are as NMDA receptor antagonists, ketamine and phencyclidine are also SNDRIs and ... at functionally important adrenergic receptor sites in the brain. However, elation may be associated with an excess of such ... Further support for the monoamine hypothesis came from monoamine depletion studies: Alpha-methyl-p-tyrosine (AMPT) is a ... These include receptor desensitization, alterations in intracellular transduction cascades and gene expression, the induction ...

https://en.wikipedia.org/wiki/Serotonin–norepinephrine–dopamine_reuptake_inhibitor

Combination therapy with dronabinol and the alpha 2 adrenergic receptor agonist lofexidine have shown mixed results, with ... Naltrexone, a mu opioid receptor antagonist, has shown mixed results for cannabis use disorder-both increasing the subjective ... 4 (1): 4-16. doi:10.1151/ascp07414. PMC 2797098. PMID 18292704.. *^ a b Borgelt LM, Franson KL, Nussbaum AM, Wang GS (February ... antagonist, and modulation of other neurotransmitter systems.[4][40] More broadly, the goal of medication therapy for cannabis ...

https://en.m.wikipedia.org/wiki/Cannabis_dependence

... drugs which are selective receptor antagonists of CysLTR1 but not CysLTR2.[20][21][22][23] Models of allergic reactions in ... is a G protein-coupled receptor that links to and when bound to its CysLT ligands activates the Gq alpha subunit and/or Ga ... leukotriene receptor activity. • cysteinyl leukotriene receptor activity. • galanin receptor activity. Cellular component. • ... "Leukotriene Receptors: CysLT2". IUPHAR Database of Receptors and Ion Channels. International Union of Basic and Clinical ...

https://en.wikipedia.org/wiki/Cysteinyl_leukotriene_receptor_2

Title:Alpha-1 adrenergic receptor antagonists to prevent acute respiratory distress syndrome and death from cytokine storm ... These results highlight the urgent need for prospective trials testing whether prophylactic use of $\alpha_1$-AR antagonists ... We previously demonstrated that alpha-1 adrenergic receptor ($\alpha_1$-AR) antagonists can prevent cytokine storm syndrome in ... alpha_1$-AR antagonists, as compared to nonusers, had a 40% relative risk reduction for ventilation and dying (p=0.014). We ...

https://arxiv.org/abs/2004.10117v6?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%253A+CoronavirusArXiv+%2528Coronavirus+Research+at+ArXiv%2529

Adrenergic Antagonists. Adrenergic Agents. Neurotransmitter Agents. Vasodilator Agents. Adrenergic alpha-1 Receptor Antagonists ... Current treatment with angiotensin converting enzyme (ACE) inhibitors, angiotensin receptor blockers (ARBs), such as losartan, ... Patients are stratified according to chemotherapy comprising an anthracycline (yes vs no). Patients are randomized to 1 of 3 ...

https://clinicaltrials.gov/ct2/show/NCT01009918?term=HLMCC+0806&rank=1

5-hydroxytryptamine receptor 1B. MEEPGAQCAPPPPAGSETWVPQANLSSAPSQNCSAKDYIYQDSISLPWKV.... unknown. agonist. Alpha-2A adrenergic ... Adrenergic alpha-Antagonists. *Adrenergic Antagonists. *Agents that produce hypertension. *Alkaloids. *Analgesics. *Analgesics ... 5-hydroxytryptamine receptor 2B. MALSYRVSELQSTIPEHILQSTFVHVISSNWSGLQTESIPEEMKQIVEEQ.... unknown. agonist. Cytochrome P450 3A4. ... 1-2H3,(H,35,39)/t21-,23-,25-,26+,27+,32-,33+/m1/s1. ... Serotonin 5-HT1 Receptor Agonists. *Serotonin 5-HT2 Receptor ...

http://www.rcsb.org/ligand/2GM

Adrenergic alpha-Antagonists. Calcium Channel Blockers. Membrane Transport Modulators. Calcium-Regulating Hormones and Agents. ... Adrenergic beta-Antagonists. Adrenergic Antagonists. Adrenergic Agents. Neurotransmitter Agents. Molecular Mechanisms of ... 1 Day. Official Title:. How Nicardipine and Labetalol Affect Cerebral Hemodynamics in Severe Preeclamptic Patients: A Pilot ...

https://www.clinicaltrials.gov/ct2/show?term=severe+preeclampsia+AND+Pregnancy+Complications&rank=63

Adrenergic beta-Antagonists. Angiotensin-Converting Enzyme Inhibitors. Adrenergic Antagonists. Adrenergic Agents. ... Adrenergic alpha-1 Receptor Antagonists. Adrenergic alpha-Antagonists. Protease Inhibitors. Enzyme Inhibitors. ... outcomes for hospitalized patients who are treated with angiotensin-converting enzyme inhibitors or angiotensin receptor ... 2008 May;1(1):50-7. doi: 10.1161/CIRCHEARTFAILURE.107.748376. Fonarow GC, Abraham WT, Albert NM, Stough WG, Gheorghiade M, ...

https://www.clinicaltrials.gov/show/NCT00344513

Alpha-1A adrenergic receptor. MVFLSGNASDSSNCTQPPAPVNISKAILLGVILGGLILFGVLGNILVILS.... unknown. antagonist. Calmodulin. ... Dopamine D2 receptor. MDPLNLSWYDDDLERQNWSRPFNGSDGKADRPHYNYYATLLTLLIAVIVF.... unknown. antagonist. Neuron-specific vesicular ... 10-[3-(4-METHYL-PIPERAZIN-1-YL)-PROPYL]-2-TRIFLUOROMETHYL-10H-PHENOTHIAZINE. Find entries where: TFP. is present as a ... UDP-glucuronosyltransferase 1-4. MARGLQVPLPRLATGLLLLLSVQPWAESGKVLVVPTDGSPWLSMREALRE.... unknown. substrate. Cytochrome P450 1A2 ...

https://www.rcsb.org/ligand/TFP

Adrenergic alpha-Antagonists) AND (Child* OR Adolescent). At LILACS, the following search strategy was used: strategy (alpha ... This review analyzed the outcome of alpha adrenergic antagonist in children with ureteral calculi. We conclude that it is the ... Adrenergic alpha antagonists) AND (Child). We further searched manually through the references of the primary studies. The ... Key words: Ureterolithiasis; Adrenergic alpha-1 Receptor Antagonists; Child; Review Literature as Topic ...

http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-55382015000601049&lng=en&nrm=iso

Interaction of Imidazoline Alpha-Adrenergic Receptor Antagonists with Histamine Receptors. Powell, James R.; Shamel, L. Blair ... Thyroxine and Propylthiouracil Effects on Alpha- and Beta-Adrenergic Receptor Number, ATPase Activities, and Sialic Acid ...

https://journals.lww.com/cardiovascularpharm/toc/1979/11000

It is an antagonist at alpha-2-adrenergic autoreceptors thereby increasing norepinephrine and serotonin release, and it blocks ... but may have similar receptor occupancy to the more potent SGAs.(Seeman, 2002) It has alpha-adrenergic antagonism and ... It is similar to FGAs in that it is a potent D2 receptor antagonist, but like many other SGAs, it is also a post-synaptic ... Propranolol is a beta-adrenergic antagonist. Although it is primarily used medically for its effect on heart rate and blood ...

https://en.wikibooks.org/wiki/Textbook_of_Psychiatry/Psychopharmacology

TOPICS: alpha-adrenergic receptor, antagonists, benign prostatic hypertrophy, older adult The Journal of the American ... Alpha-Adrenergic Receptor Antagonists in Older Patients With Benign Prostatic Hyperplasia: Issues and Potential Complications ...

https://jaoa.org/solr/searchresults.aspx?author=P+Ginsberg

What makes up a mixed adrenergic receptor antagonist? Non-selective B receptor antagonist. alpha 1 receptor antagonist ... The added Beta antagonist will prevent the reflex tachycardia commonly associated with alpha 1 receptor antagonists ... Folklore says that inhibition of a2 adrenergic receptors with Yohimbine treats what? ... Browse over 1 million classes created by top students, professors, publishers, and experts, spanning the worlds body of " ...

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... alpha-adrenergic and muscarinic receptors in vivo was assessed by various neurochemical measurements in rat brain. Olanzapine ... Olanzapine inhibited ex vivo binding of the muscarinic antagonist radioligand [3H]-pirenzepine and lowered concentrations of ... alpha-adrenergic and muscarinic receptors in vivo, consistent with its high affinity for these receptor sites in vitro. ... alpha-adrenergic and muscarinic receptors in vivo was assessed by various neurochemical measurements in rat brain. Olanzapine ...

https://pubmed.ncbi.nlm.nih.gov/8935803/?dopt=Abstract

We observed earlier that central alpha-2 adrenoceptor stimulation in mice greatly augments parasympathetic tone. To test the ... 0/Adrenergic alpha-Agonists; 0/Adrenergic beta-Antagonists; 0/Antihypertensive Agents; 0/Cardiotonic Agents; 0/Receptors, ... Adrenergic alpha-Agonists / pharmacology*. Adrenergic beta-Antagonists / pharmacology. Adult. Antihypertensive Agents / ... Receptors, Adrenergic, alpha-2 / agonists*, physiology. Stroke Volume / drug effects. Sympathetic Nervous System / drug effects ...

http://www.biomedsearch.com/nih/Alpha-2-adrenergic-transmission-human/15037555.html

For antagonists, the rank order is yohimbine > phentolamine = mianserine > chlorpromazine = spiperone = prazosin > propanolol ... The rank order of potency for agonists of this receptor is oxymetazoline > clonidine > epinephrine > norepinephrine > ... Alpha-2 adrenergic receptors mediate the catecholamine-induced inhibition of adenylate cyclase through the action of G proteins ... alpha-1B adrenergic receptor binding Source: BHF-UCL. *alpha-2C adrenergic receptor binding Source: BHF-UCLInferred from ...

https://www.uniprot.org/uniprot/P08913

Pseudoallergic conjunctivitis induced by tamsulosin, a selective alpha-1 adrenergic receptor antagonist. ... 1.. An integrated management strategy to prevent outbreaks and eliminate infection pressure of American foulbrood disease in a ... IGF-1 Mediates EphrinB1 Activation in Regulating Tertiary Dentin Formation.. Matsumura S, Quispe-Salcedo A, Schiller CM, Shin ... 2012 Jan;78(1):227-35. doi: 10.1128/AEM.06094-11. Epub 2011 Oct 21. Erratum in: Appl Environ Microbiol. 2012 Mar;78(6):2073. ...

https://www.ncbi.nlm.nih.gov/pubmed?cmd=search&term=Locke+B%5Bau%5D&dispmax=50

Alpha-adrenergic receptor antagonists are antidotal.. Atiparnizole administered at 50 mcg/kg IM reverses signs within 10 ... Mechanism of action Amitraz acts at alpha 2- adrenergic receptor sites in the CNS and at both alphal and alpha 2-adrenergic ... The action produced by each compound depends on the adrenergic receptor or receptors that are activated. Phenylpropanolamine ... adrenergic agonists though phenylpropanolamine also produces mild beta, -adrenergic receptor stimulation and acts indirectly by ...

http://maxshouse.com/Poisons.html

RAPAFLO(TM) maximizes target organ activity by binding with high affinity to the alpha (1A) receptors concentrated in the ... The binding affinity for the alpha (1B) receptors that cause smooth muscle in peripheral vessels is significantly lower, which ... The antagonism of these receptors cause the smooth muscles in these tissues to relax and results in improved urine flow and a ... RAPAFLO(TM) is an effective, uniquely selective alpha-1 adrenergic receptor antagonist. ...

http://www.bio-medicine.org/medicine-news-1/Presented-Data-Confirm-That-RAPAFLO-28TM-29--28silodosin-29-Provides-Rapid--Highly-Effective--Symptom-Relief-for-Benign-Prostatic-Hyperplasia--28BPH-2-43903-1/

... and their use as selective alpha 1a adrenergic receptor antagonists. One application of these componds is in the treatment of ... These compounds are selective in their ability to relax smooth muscle tissue enriched in the alpha 1a receptor subtype without ... Another utility of the instant compounds is provided by combination with a human 5-alpha reductase inhibitory compound, such ... EN) ALPHA 1a ADRENERGIC RECEPTOR ANTAGONISTS. (FR) ANTAGONISTES DU RECEPTEUR ADRENERGIQUE ALPHA 1a. ...

https://patentscope.wipo.int/search/en/detail.jsf?docId=WO1997017967

Alpha-1 adrenergic receptor antagonists to prevent hyperinflammation and death from lower respiratory tract infection ... antagonists can prevent hyperinflammation and death in mice. Here, we conducted retrospective analyses in two cohorts of ... We previously demonstrated that alpha-1 adrenergic receptor (⍺1-AR) ... These results highlight the urgent need for prospective trials testing whether prophylactic use of ⍺1-AR antagonists ...

https://elifesciences.org/articles/69866

The Association between Alpha-1 Adrenergic Receptor Antagonists and in-Hospital Mortality from COVID-19 ...

https://www.gsb.stanford.edu/faculty-research/faculty/academic-areas/economics

https://en.wikipedia.org/wiki/Alpha-1_adrenergic_receptor

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Helping you find trustworthy answers on Alpha Adrenergic Antagonist , Latest evidence made easy ... Find all the evidence you need on Alpha Adrenergic Antagonist via the Trip Database. ... Alpha Adrenergics Alpha Adrenergic Agonist (Alpha Adrenergic Receptor) Alpha Non-Specific Alpha 1 Selective Methoxamine Alpha 2 ... 100968571 1471-2490 0 Adrenergic alpha-Antagonists 0 Muscarinic Antagonists IM Adrenergic alpha-Antagonists administration & ...

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Buy our Recombinant human alpha 2a Adrenergic Receptor protein. Ab54291 is an active full length protein produced in ... Agonists, activators, antagonists and inhibitors. Lysates. Multiplex miRNA assays. By research area. Cancer. Cardiovascular. ... Recombinant human alpha 2a Adrenergic Receptor protein. See all alpha 2a Adrenergic Receptor proteins and peptides. ... Alpha-2 adrenergic receptors mediate the catecholamine-induced inhibition of adenylate cyclase through the action of G proteins ...

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... for the antagonist WB4101 and agonists phenylephrine and methoxamine suggests that cDNA RA42 encodes the alpha 1A receptor ... Molecular cloning and expression of the cDNA for the alpha 1A-adrenergic receptor. The gene for which is located on human ... using the hamster alpha 1B-adrenergic receptor as a probe. The deduced amino acid sequence of clone RA42 encodes a protein of ... Northern blot analysis of various rat tissues also shows the distribution expected of the alpha 1A receptor subtype with ...

https://www.ncbi.nlm.nih.gov/pubmed/1706716

The binding affinity for the alpha (1B) receptors that are in the smooth muscle in peripheral vessels is significantly lower, ... There is moderate affinity to alpha (1D) receptors which are located in the bladder, spinal cord, and nasal passages and ... RAPAFLO(R) maximizes target organ activity by binding with high affinity to the alpha (1A) receptors concentrated in the ... First-generation alpha blockers are nonselective with regard to alpha 1 adrenoreceptor subtypes and, as a result, have been ...

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For antagonists, the rank order is yohimbine > chlorpromazine > phentolamine > mianserine > spiperone > prazosin > alprenolol ... Alpha-2BAR. Gene Name. ADRA2B. Organism. Human. Amino acid sequence. ,lcl,BSEQ0010396,Alpha-2B adrenergic receptor ... Alpha-2 adrenergic receptors mediate the catecholamine-induced inhibition of adenylate cyclase through the action of G proteins ... lcl,BSEQ0010397,Alpha-2B adrenergic receptor (ADRA2B) ATGGACCACCAGGACCCCTACTCCGTGCAGGCCACAGCGGCCATAGCGGCGGCCATCACC ...

https://www.drugbank.ca/biodb/polypeptides/P18089

... receptors. In addition, it acts as an antagonist at alpha-adrenergic, histamine H1, cholinergic, and other dopaminergic and ... Alpha-/Beta-Agonists: CloZAPine may diminish the therapeutic effect of Alpha-/Beta-Agonists. Exceptions: EPINEPHrine (Nasal); ... Management: Consider use of an alternative H2 antagonist. Monitor for increased toxic effects of clozapine if cimetidine is ... or a non-dopamine antagonist (eg, pimavanserin). Consider therapy modification ...

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A alpha-1-Adrenergic receptor antagonist, antihypertensive. Additional information:. Synonyms:. N213500; rac-4-(2-Methoxyphenyl ... α-[(1-naphthalenyloxy)methyl]-1-piperazineethanol Dihydrochloride; Avishot; Flivas; KT 611 ...

https://www.bio-connect.nl/proteins-signaling-molecule/naftopidil-dihydrochloride/n213500_50mg/sfid/7635830

Alpha-1 adrenergic receptors were examined in both inner and outer layers of human pregnant myometrium using radioligand binding of [3H]prazosin. (aspetjournals.org)
Antagonist inhibited [3H]prazosin binding with an order of potency of prazosin greater than phentolamine greater than idazoxan. (aspetjournals.org)
Animals were pretreated with either the alpha -1 antagonist prazosin (0, 0.5, 1.0 or 2.5 mg/kg), the alpha -2 antagonist RX821002 (0, 0.2 or 0.4 mg/kg), the M1 muscarinic antagonist pirenzepine (0, 10 or 30 mg/kg) or the GABA-A antagonist pitrazepin (0, 1.0 or 3.0 mg/kg) and then treated with either saline or PCP (1.5 mg/kg). (aspetjournals.org)
In order to evaluate the involvement of monoaminergic system, rats were pretreated with the inhibitor of brain serotonin stores p-chlorophenylalanin (PCPA), dopamine (SCH23390 and sulpiride), and adrenoceptor (prazosin and propranolol) antagonists. (bireme.br)
In addition, antagonism at dopamine D2 (raclopride), 5-HT2 (M100907) and α1- adrenoceptors (prazosin) as well as agonism at 5-HT1A receptors (BAY x 3702) also diminished the MK-801-induced number of cells labeled with Hsp72/73. (nih.gov)
A prazosin-related compound that is a selective alpha-1-adrenergic blocker. (nih.gov)
The stimulatory effect of EPI and PHE was lowered, respectively blocked, by low concentrations of the potent alpha 1-adrenergic antagonist prazosin. (kuleuven.be)
The effectiveness of PHE but not clonidine, together with the high potency of the alpha 1-blocker prazosin suggest that the alpha-adrenergic receptor is predominantly of the alpha 1-subtype. (kuleuven.be)
In the trial, COVID-19 patients will take gradually increasing doses of an alpha blocker called prazosin, sold under the brand name Minipress, over six days, says Chetan Bettegowda, a neurosurgeon at Hopkins who is helping to design and run the trials. (technologynetworks.com)
The epinephrine response was mediated by alpha 1 adrenergic receptors based on the greater potency of the alpha 1 adrenergic selective antagonist prazosin compared to that of the alpha 2 adrenergic selective antagonist yohimbine. (arvojournals.org)
A study recently published in The American Journal of Psychiatry found that the alpha-1 adrenergic receptor antagonist prazosin may hold promise for the treatment of which mental health disorder? (psychcongress.com)
The therapies with the most evidence to support their use are Image Rehearsal Therapy (IRT) and the alpha-1-adrenergic receptor antagonist, prazosin. (allenpress.com)

Folklore says that inhibition of a2 adrenergic receptors with Yohimbine treats what? (brainscape.com)
This effect was blocked by co-injection of the alpha-2-receptor antagonist, yohimbine, demonstrating that the alpha-2-receptor is related to stimulation of feeding in layer-type chicks. (biomedsearch.com)
It's the messing with alpha-1 that is cause of criticism/scrutiny on yohimbe/yohimbine. (drsharma.ca)
[1] Yohimbine is a powerful stimulant and alpha-2 adrenergic receptor antagonist. (tigerfitness.com)

Analysis of the ligand binding properties of RA42 expressed in COS-7 cells with a variety of adrenergic ligands demonstrates a unique alpha 1-adrenergic receptor pharmacology. (nih.gov)
We investigated the α-adrenergic pharmacology of analgesia using models of tactile hypersensitivity induced with chemical stimuli that sensitize pain pathways at spinal or peripheral sites. (asahq.org)

α1-adrenergic receptor subtypes increase inhibition in the olfactory system, suggesting a synaptic mechanism for noradrenergic modulation of olfactory driven behaviors. (wikipedia.org)
Importance of Alpha - adrenergic Receptor Subtypes in Regulating of Airways Tonus at Patients with Bronchial Asthma In this work, effect of Tamsulosin hydrochloride as antagonist of alpha1A and alpha1B- adrenergic receptor and effect of Salbutamol as agonist of beta2- adrenergic receptor in patients with bronchial asthma and increased bronchial reactibility was studied.Parameters of the lung function are determined by Body plethysmography. (tripdatabase.com)
This study provides definitive evidence for the existence of three alpha 1-adrenergic receptor subtypes. (nih.gov)
First-generation alpha blockers are nonselective with regard to alpha 1 adrenoreceptor subtypes and, as a result, have been associated with orthostatic hypotension," said Leonard S. Marks, MD, author of the study and professor of urology at the Geffen School of Medicine, the University of California at Los Angeles. (allergan.com)
The alpha-AR -induced mydriasis in mice is mediated mainly by the alphaA-AR, with a smaller contribution of the alphaB-AR, matching the relative abundance of these subtypes at the mRNA level. (antikoerper-online.de)
Validation and statistical analysis of a computer modeling method for quantitative analysis of radioligand binding data for mixtures of pharmacological receptor subtypes. (aspetjournals.org)
It consists of three highly homologous subtypes, including α 1A - , α 1B - , and α 1D -adrenergic . (gutenberg.org)
Clonidine and other α-2 agonists used clinically (tizanidine, brimonidine and dexmedetomidine) activate to varying degrees three structurally distinct subtypes of the α-2 receptor: α-2A, α-2B, and α-2C. (asahq.org)
Further research to define the role of various alpha receptor subtypes is needed to identify strategies for separating the analgesic and sedative effects of α-2 agonists. (asahq.org)
Pharmacologic characterization of cloned alpha 1-adrenoceptor subtypes: selective antagonists suggest the existence of a fourth subtype. (wikipedia.org)
1995). „Cloning of the human alpha 1d-adrenergic receptor and inducible expression of three human subtypes in SK-N-MC cells. (wikipedia.org)
2000). „Transcriptional responses to growth factor and G protein-coupled receptors in PC12 cells: comparison of alpha(1)-adrenergic receptor subtypes. (wikipedia.org)
alpha(1)-adrenoceptor subtypes differentially couple to growth promotion and inhibition in Chinese hamster ovary cells. (wikipedia.org)
2003). „alpha 1-Adrenergic receptor subtypes differentially control the cell cycle of transfected CHO cells through a cAMP-dependent mechanism involving p27Kip1. (wikipedia.org)

The findings provide evidence that olanzapine antagonized dopamine, serotonin, alpha-adrenergic and muscarinic receptors in vivo, consistent with its high affinity for these receptor sites in vitro. (nih.gov)
RAPAFLO (TM) maximizes target organ activity by binding with high affinity to the alpha (1A) receptors concentrated in the prostate. (bio-medicine.org)
The neurotransmitter norepinephrine has higher affinity for the α1 receptor than does the hormone epinephrine/adrenaline. (wikipedia.org)
High affinity for the antagonist WB4101 and agonists phenylephrine and methoxamine suggests that cDNA RA42 encodes the alpha 1A receptor subtype. (nih.gov)
It's an alpha-1 adrenergic antagonist, and has a particular affinity for the sub-type alpha-1A receptors. (visivite.com)
[14] In the pre-molecular-cloning era when radioligand binding and displacement was the only major tool, spiperone and LSD were shown to label two different serotonin receptors, and neither of them displaced morphine, leading to naming of the 5-HT 1 , 5-HT 2 and 5-HT 3 receptors, corresponding to high affinity sites from LSD , spiperone and morphine respectively. (wikipedia.org)
These phorbol ester-treated cells also displayed a decrease in binding affinity of cellular alpha 1 receptors for agonists with no change in antagonist affinity. (duke.edu)
By using affinity chromatography on the affinity resin Affi-Gel-A55414, the alpha 1 receptors were purified approximately equal to 300-fold from control and phorbol ester-treated 32Pi-prelabeled cells. (duke.edu)
[1] The neurotransmitter noradrenaline has higher affinity for the α1 receptor than does adrenaline (which is a hormone). (gutenberg.org)
Haloperidol also binds to alpha-1 adrenergic receptors, but with lower affinity, and displays minimal binding to muscarinic cholinergic and histaminergic (H 1 ) receptors. (nih.gov)
It has a high affinity for serotoninergic 5-HT 2 and dopaminergic D 2 receptors. (mims.com)
Risperidone binds also to alpha 1 -adrenergic receptors, and, with lower affinity, to H 1 -histaminergic and alpha 2 -adrenergic receptors. (mims.com)
Risperidone has no affinity for cholinergic receptors. (mims.com)
This receptor binds epinephrine and norepinephrine with approximately equal affinity. (uniprot.org)

We observed earlier that central alpha-2 adrenoceptor stimulation in mice greatly augments parasympathetic tone. (biomedsearch.com)
We conclude that alpha-2 adrenoceptor stimulation has a differential effect on baroreflex HR and vasomotor regulation. (biomedsearch.com)
alpha-2 Adrenoceptor stimulation greatly augments baroreflex-mediated bradycardia, most likely by parasympathetic activation. (biomedsearch.com)
Compounds that bind to and block the stimulation of ADENOSINE A1 RECEPTORS. (nih.gov)
Alpha1-adrenergic stimulation of phosphatidylinositol-phosphatidic acid turnover in rat parotid cells. (aspetjournals.org)
Upon receptor stimulation with agonist, Gα q and β-γ subunits dissociate to initiate downstream effector pathways. (wikipedia.org)
DDT1 MF-2 cells, which are derived from hamster vas deferens smooth muscle, contain alpha 1-adrenergic receptors (54,800 +/- 2700 sites per cell) that are coupled to stimulation of inositol phospholipid metabolism. (duke.edu)
Stimulation of P2U purinergic or alpha 1A adrenergic receptors mobilizes Ca2+ in lens cells. (arvojournals.org)
Although labetalol has both alpha and beta blocking properties, the ratio of alpha:beta antagonism is approximately 1 : 7 and could lead to unopposed alpha-adrenergic receptor stimulation [20]. (thefreedictionary.com)
Chronic Alpha-1A adrenergic receptor stimulation increases lifespan and reduces the overall incidence of cancer in mice" Saturday, Nov 12, 2011, 55.10. (scientificamerican.com)
2004) Characterization of agonist stimulation of cAMP‐dependent protein kinase and G protein‐coupled receptor kinase phosphorylation of the beta2‐adrenergic receptor using phosphoserine‐specific antibodies. (els.net)

At higher doses, olanzapine increased the concentrations of the norepinephrine metabolite, MHPG-SO4, probably by blocking alpha 1-adrenergic receptors. (nih.gov)
To avoid confusion, naming was continued with the letter D. Catecholamines like norepinephrine (noradrenaline) and epinephrine (adrenaline) signal through the α1-adrenergic receptor in the central and peripheral nervous systems. (wikipedia.org)
In particular, norepinephrine decreases glutamatergic excitatory postsynaptic potentials by the activation of α1-adrenergic receptors. (wikipedia.org)
Norepinephrine also stimulates serotonin release by binding α1-adrenergic receptors located on serotonergic neurons in the raphe. (wikipedia.org)
The functional status of these alpha-1 adrenergic receptors was also assessed by measuring the norepinephrine-induced accumulation of inositol phosphates in myometrial tissue. (aspetjournals.org)
However, norepinephrine-induced increases in inositol 1,4,5-triphosphate were only observed in the outer layer. (aspetjournals.org)
These results indicate that, in conscious adult SHR, norepinephrine released by peripheral sympathetic nervous terminals and humorally borne epinephrine stimulate almost exclusively post-junctional alpha 1-adrenergic receptors. (ahajournals.org)
Incubation of these cells with tumor-promoting phorbol esters, which stimulate calcium- and phospholipid-dependent protein kinase, leads to a marked attenuation of the ability of alpha 1-receptor agonists such as norepinephrine to stimulate the turnover of inositol phospholipids. (duke.edu)
The effect of phorbol esters on norepinephrine-stimulated inositol phospholipid turnover and alpha 1-receptor phosphorylation showed the same rapid time course with a t1/2 less than 2 min. (duke.edu)
Catecholamines like norepinephrine (noradrenaline) and epinephrine (adrenaline) signal through the α 1 -adrenergic receptor in the central and peripheral nervous systems . (gutenberg.org)
Adrenergic receptors are receptors which bind the neurotransmitters epinephrine and norepinephrine. (scientificamerican.com)
Adrenergic Fibers: Nerve fibers that synthesize and release norepinephrine. (cram.com)

Alpha-2 adrenergic receptors mediate the catecholamine-induced inhibition of adenylate cyclase through the action of G proteins. (uniprot.org)
In contrast to α2-adrenergic receptors, α1-adrenergic-receptors in the arterial vasculature of skeletal muscle are more resistant to inhibition, and attenuation of α1-adrenergic-receptor-mediated vasoconstriction only occurs during heavy exercise. (wikipedia.org)
Differences in the inhibition of human immunodeficiency virus type 1 reverse transcriptase DNA polymerase activity by analogs of nevirapine and [2',5'-bis-O-(tert-butyldimethylsilyl)-3'-spiro-5"-(4"-amino-1", 2"-oxathiole-2",2"-dioxide] (TSAO). (aspetjournals.org)
1 Indeed, the importance of sustained, NO inhibition of the ET-1 drive to increase tone is exemplified in vivo by the rapid, ET-1-mediated arterial pressure elevation after acute NO synthase (NOS) inhibition. (ahajournals.org)
2 Moreover, the ET-1 pressor effect after NOS inhibition is independent of other pressor systems and, thus, reflects the relative importance of NO suppression of this ET-1 drive. (ahajournals.org)
Two, nonmutually exclusive mechanisms thought to underlie the ET-1 dependency of the increased vascular tone responsible for the NOS inhibitor-induced pressure elevation are (1) NO inhibition of constriction to endogenously released ET-1. (ahajournals.org)
2) NO inhibition of ET-1 release. (ahajournals.org)
1 , 2 Although the detailed mechanism underlying the NO inhibition of acute ET-1 release has not been clearly established, possibilities include decreased conversion of the immediate precursor to ET-1, big ET-1, to ET-1 15 and inhibition of pathways involved in the exocytosis of Weibel-Palade bodies, 16 endothelial granules that store ET-1. (ahajournals.org)
17 However, it should be noted that in vivo findings that actually demonstrate the fundamental phenomenon of NO inhibition of ET-1 release are generally lacking. (ahajournals.org)
2 Thus, studies purported to demonstrate NO inhibition of ET-1 release have relied largely on isolated vessels and cultured endothelium, as described herein. (ahajournals.org)
Furthermore, we also focus on whether laminar shear stress influences the manifestation of NO inhibition of ET-1 release. (ahajournals.org)
This proprietary-active complex is believed to act on recessing hair by limiting hormonal influence through inhibition of 5-alpha-reductase activity, preventing aggravation of hair loss due to micro-inflammation. (thefreedictionary.com)
According to experimental data, it can be noted that usage of blockers caused the inhibition of alpha-adrenergic receptors by hydrazine in chronic intoxications. (thefreedictionary.com)

The antagonism of these receptors cause the smooth muscles in these tissues to relax and results in improved urine flow and a reduction in BPH symptoms. (bio-medicine.org)
The therapeutic efficacy of clozapine (dibenzodiazepine antipsychotic) is proposed to be mediated through antagonism of the dopamine type 2 (D 2 ) and serotonin type 2A (5-HT 2A ) receptors. (drugs.com)
These findings indicate that the PPI-disruptive effect of PCP may be mediated in part by alpha -1 adrenergic receptors and that antagonism of alpha -1 receptors may play a major role in mediating the blockade of PCP-induced deficits in PPI by certain antipsychotics. (aspetjournals.org)
While burn impeded early commitment and late maturation stages, 1/ 2 antagonism increased the early erythroblasts through commitment stages via 2 specific MafB regulation. (bireme.br)
The results suggest that the efficacy of atypical antipsychotic drugs in the clinic may result from a combined effect on 5-HT2, 5-HT1A and α1-adrenergic receptors added to the classical dopamine D2 receptor antagonism. (nih.gov)

In smooth muscle cells of blood vessels the principal effect of activation of these receptors is vasoconstriction. (wikipedia.org)
Resting muscle will not have its α1-adrenergic receptors blocked, and hence the overall effect will be α1-adrenergic-mediated vasoconstriction. (wikipedia.org)
The latter findings may account for the lack of blood pressure-lowering effects of the studied calcium antagonists at doses that effectively antagonize alpha 2-adrenergic receptor-mediated vasoconstriction in conscious SHR. (ahajournals.org)
specifically: 1) heme-derived CO generated within vascular smooth muscle (VSM) can promote vasodilation, but 2) its actions on the endothelium apparently can promote vasoconstriction. (who.int)
Beta-blockers should be added after a few days and in the presence of an effective alpha-adrenergic blockade since they can worsen the BP profile by inhibiting vasodilatation mediated by beta-2 adrenergic receptors and thus increasing vasoconstriction [16]. (thefreedictionary.com)
Xylometazoline is a direct acting sympathomimetic adrenergic alpha-agonist used to induce systemic vasoconstriction, thereby decreasing nasal congestion. (hmdb.ca)

However, literature about the use of alpha-1 adrenergic blockers in pediatric population with distal ureterolithiasis is still scarce. (scielo.br)
This review has the objective to evaluate the use of alpha-1 adrenergic blockers as medical expulsive treatment in children with distal ureterolithiasis. (scielo.br)
In the adult patient, there are various conservative treatments to treat calculi smaller than 12mm, such as the use of calcium blockers, non-steroidal anti-inflammatory agents, or alpha-1 adrenergic blockers, which is the better approach ( 9 ). (scielo.br)
The most common drug-related AE was retrograde ejaculation (orgasm with reduced semen), an expected treatment effect of selective alpha blockers, which occurred in 20.9 percent of men treated with RAPAFLO (R) . Retrograde ejaculation is reversible upon discontinuation of the drug. (allergan.com)
4] The mainstay of medical treatments includes alpha-blockers, 5-alpha-reductase inhibitors (5-ARIs), or a combination of the two. (thefreedictionary.com)
First-line therapies indude alpha-1 adrenergic receptor antagonists (alpha-blockers) and 5-alpha-reductase inhibitors (5-AR1s). (thefreedictionary.com)
The researchers were interested in drugs called alpha blockers, which are widely prescribed for prostate conditions and high blood pressure - and also interfere with the cell signaling that triggers cytokine storms. (technologynetworks.com)
In theory, alpha blockers might stop a cytokine storm before it starts. (technologynetworks.com)
As the COVID-19 pandemic escalated in the United States over the past few months and severely ill patients presented with cytokine storm symptoms, the idea of testing alpha blockers in humans has become more urgent, Vogelstein's team recently argued in the Journal of Clinical Investigation . (technologynetworks.com)
They combed through records from people hospitalized for pneumonia and acute respiratory distress and analyzed whether patients' outcomes were better if they had been taking alpha blockers for unrelated conditions. (technologynetworks.com)
Some medications commonly used to reduce blood pressure are diuretics, angiotension-converting enzyme inhibitors, beta-adrenergic blockers, calcium antagonists and alpha-adrenergic blockers. (thefreedictionary.com)
AIMS: to assess potential differential effects of beta-blockers and beta-blockers with moderate anti-alpha-1 activity on selected haemodynamic, humoral, and respiratory characteristics in cirrhosis. (forskningsdatabasen.dk)
Results from clinical studies evaluating nonselective alpha-blockers and alpha-1D blockers as medical expulsive therapy are pending. (urologytimes.com)
We will now repeat our contractility studies using different alpha-blockers to understand their effect throughout the ureter. (urologytimes.com)
He noted that reports of the efficacy of tamsulosin for facilitating stone passage and findings from the present study might raise the question of whether there is sufficient evidence-based rationale for using alpha-blockers as medical expulsive therapy. (urologytimes.com)

Blockade of a2 receptors increases what? (brainscape.com)
Observational Study in Patients Suffering From Benign Prostatic Hyperplasia Treated With Alpha - adrenergic Blockade Observational Study in Patients Suffering From Benign Prostatic Hyperplasia Treated With Alpha - adrenergic Blockade - Full Text View - ClinicalTrials.gov Hide glossary Glossary Study record managers: refer to the if submitting registration or results information. (tripdatabase.com)
Utilizing the scald burn injury model, we studied erythropoietin-independent late maturation stages and the effect of 1/ 2, -2, or -3 blockade in burn mediated erythropoietin-resistant anemia. (bireme.br)

Exclusion criteria also included: consumption of food rich in soy isoflavonoids, dietary supplements of any kind, medication with possible effects on prostate health such as antibiotics, anti-inflammatory drugs, alpha-1 -adrenoreceptor antagonist and 5-alpha-reductase inhibitors. (thefreedictionary.com)
Cancer chemopreventive approaches may include 5-alpha-reductase inhibitors, histone deacetylase inhibitors, antioxidans, non-steroidal anti-inflammatory drugs, cholesterol-lowering statins, vitamin D analogues. (thefreedictionary.com)
BERKELEY, CA (UroToday.com) - The primary treatments for lower urinary tract symptoms (LUTS) secondary to benign prostatic hyperplasia (BPH) are alpha-1 adrenergic receptor antagonists (ARA) and 5-alpha reductase inhibitors (5-ARI). (urotoday.com)
Downregulation of post-synaptic 5-HT 2A receptor is an adaptive process provoked by chronic administration of selective serotonin reuptake inhibitors (SSRIs) and classical antipsychotics. (wikipedia.org)

In patients with benign prostatic hyperplasia (BPH), administration of an alpha-1 receptor antagonist decreased lower urinary tract symptoms (LUTS) and reduced the urinary ATP/creatinine ratio, with improvement of LUTS being greater in patients who had a high baseline urinary ATP level. (scirp.org)

We'll start with the alpha1a and alpha1b adrenergic receptors. (scientificamerican.com)
2004). „Cell surface expression of alpha1D-adrenergic receptors is controlled by heterodimerization with alpha1B-adrenergic receptors. (wikipedia.org)

α1-receptors primarily mediate smooth muscle contraction, but have important functions elsewhere as well. (wikipedia.org)
During exercise, α1-adrenergic receptors in active muscles are attenuated in an exercise intensity-dependent manner, allowing the β2-adrenergic receptors which mediate vasodilation to dominate. (wikipedia.org)
It is therefore likely that brain adrenergic alpha-2-receptors mediate the orexigenic effects of neuropeptide Y and beta-endorphin in layer-type chicks. (biomedsearch.com)
α-2-ADRENOCEPTORS are known to mediate analgesia, and α-2-adrenoceptor agonists (such as clonidine) have proven effective in the treatment of pain, such as intractable cancer pain, 1,2 postsurgical pain, 3,4 and sympathetically maintained pain. (asahq.org)
Beta-adrenergic receptors mediate the catecholamine-induced activation of adenylate cyclase through the action of G proteins. (uniprot.org)

1994). „The alpha 1-adrenergic receptor that mediates smooth muscle contraction in human prostate has the pharmacological properties of the cloned human alpha 1c subtype. (wikipedia.org)

Alpha-2 adrenergic transmission and human baroreflex regulation. (biomedsearch.com)
Heterotrimeric G proteins, consisting of alpha, beta and gamma subunits, couple ligand-bound seven transmembrane domain receptors (GPCRs or G-protein coupled receptors) to the regulation of effector proteins and production of intracellular secondmessengers such as cAMP, cGMP, and Ca.sup.2+. (patentgenius.com)
Wong CY, Wuriyanghan H, Xie Y, Lin MF, Abel PW, Tu Y. Epigenetic Regulation of Phosphatidylinositol 3,4,5-Triphosphate-dependent Rac Exchanger 1 Gene Expression in Prostate Cancer Cells. (creighton.edu)
The present study was designed to investigate the role of brain adrenergic alpha-2-receptors on feeding regulation of layer-type chicks. (biomedsearch.com)
Differential regulation of corticotropin-releasing factor1 receptor expression by stress and agonist treatments in brain and cultured cells. (aspetjournals.org)
Regulation of autonomic receptors in rat submandibular gland. (aspetjournals.org)
Apparent "down-regulation" of human platelet alpha 2-adrenergic receptors is due to retained agonist. (aspetjournals.org)
This review assessed these in vitro findings, with a specific focus toward elucidating the mechanism underlying the NO-mediated negative regulation of ET-1-dependent increased arterial pressure, as demonstrated after acute NOS inhibitor in vivo. (ahajournals.org)
Paradoxical down-regulation of 5-HT 2A receptors can be observed with several 5-HT 2A antagonists. (wikipedia.org)
Our Cardiovascular poster highlights the key G protein-coupled receptors involved in the regulation of vascular reactivity. (tocris.com)
Operating via heterotrimeric G proteins, adrenergic receptors constitute one of the most intensely studied classes of membrane proteins, whose expression and function are subject to regulation at many different levels, including transcriptional, posttranscriptional and posttranslational. (els.net)
Hadcock JR and Malbon CC (1988) Down‐regulation of beta‐adrenergic receptors: agonist‐induced reduction in receptor mRNA levels. (els.net)
Kallal L, Gagnon AW, Penn RB and Benovic JL (1998) Visualization of agonist‐induced sequestration and down‐regulation of a green fluorescent protein‐tagged beta2‐adrenergic receptor. (els.net)
Kohout TA and Lefkowitz RJ (2003) Regulation of G protein‐coupled receptor kinases and arrestins during receptor desensitization. (els.net)
Krupnick JG and Benovic JL (1998) The role of receptor kinases and receptors in G‐protein‐coupled receptor regulation. (els.net)
Shenoy SK, McDonal PH, Kohout TA and Lefkowitz RJ (2001) Regulation of receptor fate by ubiquitination of activated beta2‐adrenergic receptor and beta‐arrestin. (els.net)

PCP-induced deficits in PPI in rats are resistant to dopamine and serotonin antagonists but can be antagonized by antipsychotics such as clozapine, olanzapine and Seroquel. (aspetjournals.org)
The present studies examined the possibility that an antagonist action at a particular receptor subtype might be responsible for the interaction between PCP and the clozapine-like antipsychotics by testing whether a selective antagonist at alpha -1, alpha -2, M1 or GABA-A receptors would prevent the PCP-induced deficit in PPI in rats. (aspetjournals.org)
Role of the sympathetic nervous system in blood pressure maintenance and in the antihypertensive effects of calcium antagonists in spontaneously hypertensive rats. (ahajournals.org)

Expression of mRNA for this receptor is strongly detected in liver followed by heart, cerebral cortex, brain stem, kidney, lung, and spleen. (nih.gov)
Changes of D1 and D2 dopamine receptor mRNA in the brains of monkeys lesioned with 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine: correction with chronic administration of L-3,4-dihydroxyphenylalanine. (aspetjournals.org)

METHODS: Burn mice were randomized to receive daily injections of propranolol (nonselective 1/ 2 antagonist), nadolol (long-acting 1/ 2 antagonist), butoxamine (selective 2 antagonist), or SR59230A (selective 3 antagonist) for 6 days after burn. (bireme.br)
RESULTS: Although propranolol improved early and late erythroblasts, only butoxamine and selective 3-antagonist administrations were positively reflected in the peripheral blood hemoglobin and red blood cells count. (bireme.br)
BACKGROUND AND AIMS: Newer studies suggest that carvedilol, a beta-blocker with a moderate anti-alpha-1 activity, is superior to propranolol in reducing the portal pressure and risk of variceal bleeding. (forskningsdatabasen.dk)

In addition, it acts as an antagonist at alpha-adrenergic, histamine H 1 , cholinergic, and other dopaminergic and serotonergic receptors. (drugs.com)
[7] This receptor was first noted for its importance as a target of serotonergic psychedelic drugs such as LSD . (wikipedia.org)
Wakefulness in maintained through the activity of wake-promoting brain regions, including the cholinergic nuclei of the pontine tegmentum, the adrenergic locus coeruleus, and the serotonergic raphe nuclei. (springer.com)
The present chapter reviews preclinical research carried out in recent years in order to better understand the action of psychotomimetic agents such as the noncompetitive NMDA receptor (NMDA-R) antagonists and serotonergic hallucinogens. (springer.com)

1 , 2 This mechanism is essentially supported by demonstrations that NOS inhibitor enhanced the constrictor effects of exogenous ET-1 in several in vivo and ex vivo preparations. (ahajournals.org)
2 Findings referred to are mainly those of ET-1 release rather than contractility (eg, those in which ET receptor antagonist prevented the NOS inhibitor-induced decreased flow/increased pressure/tension). (ahajournals.org)
12 , 18 - 25 The rationale for this emphasis is that findings based on contractility could reflect NOS inhibitor enhancement of ET-1 constriction rather than increased ET-1 release. (ahajournals.org)
In rat heart perfused at constant flow, increased amounts of ET-1 were detected in the coronary effluent of samples collected for the final 5 to 15 minutes of a 1.5-hour perfusion with NOS inhibitor 18 ( Figure ). (ahajournals.org)
The increased ET-1 release qualitatively correlated with the NOS inhibitor-elevated perfusion pressure because maximal pressure occurred after 1-hour perfusion with the inhibitor. (ahajournals.org)
18 Also, ET receptor antagonist prevented the NOS inhibitor-elevated pressure. (ahajournals.org)
Effects of NOS inhibitor, methylene blue, oxyhemoglobin, and methemoglobin on endothelin (ET)-1 release. (ahajournals.org)
NOS inhibitor (NOS-I), methylene blue, oxyhemoglobin (OxHb), and methemoglobin (MeHb) caused increased (↑), decreased (↓), or no change (−) in ET-1 release or the effects were not reported (n.r. (ahajournals.org)
In possible contrast, in rat heart perfused at constant pressure, increased amounts of ET-1 were not detected in coronary effluent after NOS inhibitor perfusion for 15 minutes 20 ( Figure ). (ahajournals.org)
Clinical usefulness of serum prostate specific antigen for the detection of prostate cancer is preserved in men receiving the dual 5-alpha-reductase inhibitor dutasteride. (thefreedictionary.com)

It is a 5-HT2 and 5-HT3 receptor antagonist, a histamine- 1 receptor antagonist, a moderate peripheral alpha-1 adrenergic antagonist, and a moderate muscarinic receptor antagonist. (antidepressantsfacts.com)

Pharmacological characterization of histamine receptors mediating the elevation of cyclic AMP. (aspetjournals.org)

A mutation of rs2322333, located in the intronic and 3' UTR (zeige UTS2R ELISA Kits ) part of the gene ADRA1A in chromosome 8, has a probability of being deleterious the abolition of ELAV-like protein 1 (ELAVL1 (zeige ELAVL1 ELISA Kits )) binding site rs2695260. (antikoerper-online.de)
The neurokinin-1 receptor antagonist LY306,740 blocks nociception-induced increases in dorsal horn neurokinin-1 receptor gene expression. (aspetjournals.org)

Phenylephrine (PHE), a specific agonist of alpha 1-adrenergic receptors, provoked a significant rise of GH release. (kuleuven.be)
San Antonio--Using their established ex vivo model for measuring ureteral contractility, urologists at the University of Wisconsin, Madison have demonstrated that the nonselective alpha-1 receptor antagonist doxazosin (Cardura) relaxes ureteral smooth muscle and reverses the contractile effects induced by phenylephrine and epinephrine. (urologytimes.com)

Identification of critical extracellular loop residues involved in alpha 1-adrenergic receptor subtype-selective antagonist binding. (aspetjournals.org)

Pharmacological and molecular cloning studies have demonstrated heterogeneity of alpha 1-adrenergic receptors. (nih.gov)
1995). „Cloning and pharmacological characterization of human alpha-1 adrenergic receptors: sequence corrections and direct comparison with other species homologues. (wikipedia.org)

We have now cloned two alpha 1-adrenergic receptors from a rat cerebral cortex cDNA library, using the hamster alpha 1B-adrenergic receptor as a probe. (nih.gov)

The present data show that the natural beta-agonist epinephrine (EPI) stimulates GH release through an additional alpha-adrenergic mechanism. (kuleuven.be)

RAPAFLO(R) is an effective and uniquely selective alpha blocker for the treatment of the signs and symptoms of benign prostatic hyperplasia (BPH), the number one reason patients visit urologists. (allergan.com)

The ex vivo binding of the 5HT2 radioligand [3H]-ketanserin was inhibited by olanzapine treatment, as was quipazine-induced increases in MHPG-SO4, evidence suggesting that olanzapine antagonized 5HT2 receptors. (nih.gov)
Olanzapine inhibited ex vivo binding of the muscarinic antagonist radioligand [3H]-pirenzepine and lowered concentrations of striatal, but not hippocampal, acetylcholine levels. (nih.gov)
The effects of phenoxybenzamine on alpha 1- and alpha 2-adrenergic receptor binding sites were examined directly using radioligand binding assays of the antagonist drugs [125I]BE 2254 and [3H]rauwolscine, respectively, in homogenates of rat cerebral cortex. (meta.org)

Rauwolscine is an alpha-2 adrenergic receptor antagonist with little to no activity on alpha-1. (drsharma.ca)

Incorporation of G alpha z-Specific Sequence at the Carboxyl Terminus Increases the Promiscuity of Galpha16 toward Gi-coupled Receptors. (patentgenius.com)
Aghajanian GK, Marek GJ (1999) Serotonin, via 5-HT2A receptors, increases EPSCs in layer V pyramidal cells of prefrontal cortex by an asynchronous mode of glutamate release. (springer.com)
Mice with constantly active alpha 1 a adrenergic receptors are less anxious than normal mice, show less depressive-like activity in mouse depression tests , and showed increases in new neuron birth in the hippocampus . (scientificamerican.com)

Carbon monoxide binds to hemoglobin and a minimum of 0.5-1% carboxyhemoglobin is inevitably detected in most mammalian species. (who.int)

3: The method of claim 1, wherein the agents comprise at least two of a Gi-coupled dopamine D2 receptor agonist, a Gs-coupled .beta.1 adrenergic receptor antagonist, or a Gq-coupled .alpha.1 adrenergic receptor blocker. (patents.com)
These effects were related to the increased serum prolactin levels, resulting from the dopamine D2-receptor blocking activity of risperidone. (mims.com)

Suppression of human prostate cancer cell growth by alpha1-adrenoceptor antagonists doxazosin and terazosin via induction of apoptosis. (wikipedia.org)

The ability of the atypical antipsychotic drug candidate olanzapine to antagonize dopamine, serotonin, alpha-adrenergic and muscarinic receptors in vivo was assessed by various neurochemical measurements in rat brain. (nih.gov)

It also induces contraction of the urinary bladder, although this effect is minor compared to the relaxing effect of β2-adrenergic receptors. (wikipedia.org)
Other effects on smooth muscle are contraction in: Ureter Uterus (when pregnant): this is minor compared to the relaxing effects of the β2 receptor, agonists of which - notably albuterol/salbutamol - were formerly[citation needed] used to inhibit premature labor. (wikipedia.org)
The pathophysiologic basis for this treatment is that alpha antagonists inhibit contraction of ureteral muscles responsible for ureterospasm, thereby allowing for an increased rate of stone propagation as well as reduce discomfort. (epmonthly.com)

Pseudoallergic conjunctivitis induced by tamsulosin, a selective alpha-1 adrenergic receptor antagonist. (nih.gov)
As you can see in Table 1, since 2007, there have been at least five major studies evaluating the use of tamsulosin in renal colic. (epmonthly.com)
4: The method of claim 1, wherein the agents comprise at least two of bromocriptine, metoprolol, tamsulosin, or doxazosin. (patents.com)
5: The method of claim 1, wherein the agents comprise bromocriptine, metoprolol, and tamsulosin. (patents.com)
There have been recent reports describing improved stone passage rates in patients with distal ureteral stones treated with the selective alpha-1 adrenergic receptor antagonist tamsulosin [Flomax]. (urologytimes.com)

More specifically, the epinephrine response was mediated by the alpha 1A adrenergic receptor subtype based on the greater potencies exhibited by the alpha 1A subtype selective competitive antagonists WB 4101 and 5-methylurapidil compared to the alpha 1B and alpha 1D selective antagonists spiperone and BMY 7378, respectively. (arvojournals.org)

This invention relates to G.alpha.q protein variants and their use in the analysis and discovery of agonists and antagonsists of chemosensory receptors, such as G protein coupled receptors involved in sensing of tastants, olfactants, andpheromones. (patentgenius.com)

In the present work, we have examined the existence of possible differences among different antipsychotic drugs in their capacity to block immunolabeling of Hsp72/73 in the retrosplenial cortex of the rat induced by the potent NMDA receptor antagonist, MK- 801. (nih.gov)
Although risperidone is a potent D 2 antagonist, which is considered to improve the positive symptoms of schizophrenia, it causes less depression of motor activity and induction of catalepsy than classical neuroleptics. (mims.com)
Phenoxybenzamine was approximately 250-fold more potent at decreasing alpha 1-adrenergic receptor density than it was at decreasing alpha 2-adrenergic receptor density. (meta.org)

Besides alpha receptors what else does B-Haloalkylamines inhibit? (brainscape.com)
A method of treating an ocular disorder in a subject includes administering to the subject subtherapeutic amounts of two or more agents that inhibit and/or blocks the activation of Gs- or Gq-protein coupled receptors or Gs- or Gq-signaling cascade in ocular cells of the subject, and/or activates Gi-protein coupled receptors, which is induced or triggered by light induced all-trans-retinal generation. (patents.com)
ALA at a physiological concentration has been reported to inhibit the enzyme 5-alpha-reductase in vitro. (thefreedictionary.com)

The experiments were repeated, with the untreated or doxazosin-treated tissues ex-posed to a concentration-response curve of epinephrine in log10 incremental concentrations over the range from 1 nM to 10 micromolar. (urologytimes.com)
With data pooled for all segments, spontaneous ureteral contractility was reduced 28% by 0.1 micromolar of doxazosin, 34% by 1 micromolar, and 44% by 10 micromolar. (urologytimes.com)
Contractions were completely inhibited when epinephrine, 100 nM, was added in the presence of doxazosin, 1 or 10 micromolar. (urologytimes.com)

Muscarinic cholinergic receptors on cultured thyroid cells. (aspetjournals.org)

1996 Mar;124(1-2):87-94. (nih.gov)
1996) The beta‐adrenergic receptor is a substrate for the insulin receptor tyrosine kinase. (els.net)

Novel antagonists of the inhibitory glycine receptor derived from quinolinic acid compounds. (aspetjournals.org)
This is the main excitatory receptor subtype among the GPCRs for serotonin , although 5-HT 2A may also have an inhibitory effect [6] on certain areas such as the visual cortex and the orbitofrontal cortex. (wikipedia.org)

Blood vessels with α1-adrenergic receptors are present in the skin, the sphincters of gastrointestinal system, kidney (renal artery) and brain. (wikipedia.org)
Blocks Alpha-1 receptors in blood vessels (arteries and veins). (exrx.net)
By blocking these receptors, blood vessels will dilate (relax) and lower blood pressure. (exrx.net)
While the neuroanatomical interactions that govern the sympathetic nervous system are yet to be fully elucidated, sympathetic tone is recognised as an important mediator of cardiovascular function predominantly through its direct effects on beta-adrenergic receptors in the heart to modulate cardiac output and on alpha-adrenergic receptors in blood vessels to modulate arteriolar resistance and venous capacitance. (thefreedictionary.com)

Kinetics of [3H]flunitrazepam binding to membrane-bound benzodiazepine receptors. (aspetjournals.org)

In addition, the effects of selective monoaminergic agents were also studied to delineate the particular receptors responsible for the actions of antipsychotic drugs. (nih.gov)
Spironolactone is effective for treating resistant hypertension Spironolactone is effective for treating resistant hypertension Discover Portal Discover Portal Spironolactone is effective for treating resistant hypertension Published on 1 December 2015 doi: This trial investigated which drug is best added to high blood pressure (hypertension) treatment if blood pressure has not come down to normal levels after taking three blood pressure lowering drugs. (tripdatabase.com)
The team's tentative conclusion: taking alpha blocker drugs correlated to a lower risk of death from respiratory distress. (technologynetworks.com)
Some of these pathways [i.e., mammalian target of rapamycin (mTOR), vascular endothelial growth factor receptor (VEGFR), ras/mitogen-activated protein kinase (MAPK) signaling, or insulin like growth factor receptor (IGFR)] which are functionally related to the activity of the EGFR will be discussed in this review to provide a scientific rationale for the combination of drugs which target these pathways with anti-EGFR agents. (eurekaselect.com)
A Cochrane Systematic Review of alpha-adrenergic drugs for treatment of female stress UI included 22 randomized and quasi-experimental studies, 11 of which were cross-over trials (Alhasso, Glazner, Pickard, & N'Dow, 2010). (thefreedictionary.com)
Hoffman BB (2001) Catecholamines, sympathetic drugs, and adrenergic receptor antagonists. (els.net)

Phorbol esters promote alpha 1-adrenergic receptor phosphorylation and receptor uncoupling from inositol phospholipid metabolism. (duke.edu)

Marchese A, Chen C, Kim YM and Benovic JL (2003) The ins and outs of G‐protein‐coupled receptor trafficking. (els.net)
Shumay E, Gavi S, Wang HY and Malbon CC (2004) Trafficking of beta2‐adrenergic receptors: insulin and beta‐agonists regulate internalisation by distinct cytoskeletal pathways. (els.net)
Adrenergic receptor trafficking is an active physiological process where adrenergic receptors are relocated from one region of the cell to another or from one type of cell to another. (meta.org)
Discover the latest research on adrenergic receptor trafficking here. (meta.org)

Activation of the epidermal growth factor receptor (EGFR)-dependent intracellular signaling pathway has a relevant role in the development and the progression of several human cancers. (eurekaselect.com)
Mediates Ras activation through G(s)-alpha- and cAMP-mediated signaling (By similarity). (uniprot.org)

sub.q protein variants that functionally couple to sensory cell receptors such as taste GPCRs (TRs) and olfactory GPCRs (ORs) in an overly promiscuous manner. (patentgenius.com)

Alpha-1 adrenergic blocker use is related with a greater incidence of expulsion of ureteral calculi, smaller or greater than 5mm, and fewer episodes of pain when compared to ibuprofen. (scielo.br)
RAPAFLO (TM) is a new, uniquely selective alpha blocker for the treatment of the signs and symptoms of BPH, launched earlier this month by Watson Pharmaceuticals, a leader in generic and specialty branded pharmaceuticals. (bio-medicine.org)
Their treatment, a common type of prescription drug called an alpha blocker, might break a cycle of hyperinflammation before it ramps up, their findings from mouse studies and a recent analysis of medical claims data suggest. (technologynetworks.com)
Giving mice with bacterial infections an alpha blocker lessened cytokine storms and decreased deaths, Vogelstein's team reported in the journal Nature in 2018 . (technologynetworks.com)
To obtain approval for an alpha blocker clinical trial, Vogelstein's team first surveyed medical claims data. (technologynetworks.com)
8. alpha blocker$.tw. (bestbets.org)

1. Tachycardia, hypertension and hypotension have been reported. (antidepressantsfacts.com)

This review analyzed the outcome of alpha adrenergic antagonist in children with ureteral calculi. (scielo.br)
Both the normal and chronically obstructed distal ureteral segments were found to express alpha-1A, -1B, and -1D receptors. (urologytimes.com)

Anatomy3

Organisms7

Diseases2

Chemicals and Drugs22

Analytical, Diagnostic and Therapeutic Techniques and Equipment4

Psychiatry and Psychology2

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Publication Characteristics2

alpha1-adrenergic receptor subtypes in human peripheral blood lymphocytes. (1/356)

Modulation of basal intracellular calcium by inverse agonists and phorbol myristate acetate in rat-1 fibroblasts stably expressing alpha1d-adrenoceptors. (2/356)

Characterization of alpha1-adrenoceptor subtypes mediating vasoconstriction in human umbilical vein. (3/356)

Comparison of relaxation responses of cavernous and trigonal smooth muscles from rabbits by alpha1-adrenoceptor antagonists; prazosin, terazosin, doxazosin, and tamsulosin. (4/356)

Canine external carotid vasoconstriction to methysergide, ergotamine and dihydroergotamine: role of 5-HT1B/1D receptors and alpha2-adrenoceptors. (5/356)

alpha1-adrenergic receptor activation of c-fos expression in transfected rat-1 fibroblasts: role of Ca2+. (6/356)

In vivo measurement by [3H]Tamsulosin of alpha1 adrenoceptors in rat tissues in relation to the pharmacokinetics. (7/356)

Naftopidil, a novel alpha1-adrenoceptor antagonist, displays selective inhibition of canine prostatic pressure and high affinity binding to cloned human alpha1-adrenoceptors. (8/356)

Lisinopril

Antibodies, Monoclonal, Humanized

Receptor, erbB-2

Breast Neoplasms

Antibodies, Monoclonal

Genes, erbB-2

Antineoplastic Agents

Baroreflex

Sympathetic Nervous System

Heart Rate

Pressoreceptors

Norepinephrine

Carotid Sinus

Blood Pressure

Psychopharmacology

Psychiatry

Consensus Development Conferences, NIH as Topic

Consensus Development Conference

Consensus Development Conference, NIH

Textbooks as Topic

Gynecology

Piperonyl Butoxide

Mineral Oil

Pesticide Synergists

Salivation

Fluid Therapy

Pyrethrins

Tellurium

Epinephrine

Priapism

Interferon-alpha

Polyethylene Glycols

Recombinant Proteins

Ribavirin

Aspergillus oryzae

Idazoxan

Molecular Sequence Data

Receptors, Adrenergic, beta-2

Receptors, Adrenergic

Receptors, Adrenergic, alpha-2

Cyclic AMP Receptor Protein

Periodicals as Topic

PubMed

Books

Receptors, Adrenergic, alpha-1

Publishing

Cloning, Molecular

Apiaceae

Acorus

Pimenta

Piper nigrum

Myrtaceae

Acoraceae

Black Pepper

alpha1-adrenergic receptor subtypes in human peripheral blood lymphocytes. (1/356)

Modulation of basal intracellular calcium by inverse agonists and phorbol myristate acetate in rat-1 fibroblasts stably expressing alpha1d-adrenoceptors. (2/356)

Characterization of alpha1-adrenoceptor subtypes mediating vasoconstriction in human umbilical vein. (3/356)

Comparison of relaxation responses of cavernous and trigonal smooth muscles from rabbits by alpha1-adrenoceptor antagonists; prazosin, terazosin, doxazosin, and tamsulosin. (4/356)

Canine external carotid vasoconstriction to methysergide, ergotamine and dihydroergotamine: role of 5-HT1B/1D receptors and alpha2-adrenoceptors. (5/356)

alpha1-adrenergic receptor activation of c-fos expression in transfected rat-1 fibroblasts: role of Ca2+. (6/356)

In vivo measurement by [3H]Tamsulosin of alpha1 adrenoceptors in rat tissues in relation to the pharmacokinetics. (7/356)

Naftopidil, a novel alpha1-adrenoceptor antagonist, displays selective inhibition of canine prostatic pressure and high affinity binding to cloned human alpha1-adrenoceptors. (8/356)

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