Arsenite Transporting ATPases
Arsenic
A shiny gray element with atomic symbol As, atomic number 33, and atomic weight 75. It occurs throughout the universe, mostly in the form of metallic arsenides. Most forms are toxic. According to the Fourth Annual Report on Carcinogens (NTP 85-002, 1985), arsenic and certain arsenic compounds have been listed as known carcinogens. (From Merck Index, 11th ed)
Ion Pumps
Antimony
Arsenate Reductases
Oxidoreductases that specifically reduce arsenate ion to arsenite ion. Reduction of arsenate is a critical step for its biotransformation into a form that can be transported by ARSENITE TRANSPORTING ATPASES or complexed by specific sulfhydryl-containing proteins for the purpose of detoxification (METABOLIC DETOXIFICATION, DRUG). Arsenate reductases require reducing equivalents such as GLUTAREDOXIN or AZURIN.
Aquaglyceroporins
Antimony Potassium Tartrate
Alcaligenes faecalis
Ectothiorhodospiraceae
Pteris
Arsenic Poisoning
Disorders associated with acute or chronic exposure to compounds containing ARSENIC (ARSENICALS) which may be fatal. Acute oral ingestion is associated with gastrointestinal symptoms and an encephalopathy which may manifest as SEIZURES, mental status changes, and COMA. Chronic exposure is associated with mucosal irritation, desquamating rash, myalgias, peripheral neuropathy, and white transverse (Mees) lines in the fingernails. (Adams et al., Principles of Neurology, 6th ed, p1212)
Cadmium Chloride
Ralstonia
Overexpression of the multidrug resistance-associated protein (MRP1) in human heavy metal-selected tumor cells. (1/791)
Cellular and molecular mechanisms involved in the resistance to cytotoxic heavy metals remain largely to be characterized in mammalian cells. To this end, we have analyzed a metal-resistant variant of the human lung cancer GLC4 cell line that we have selected by a step-wise procedure in potassium antimony tartrate. Antimony-selected cells, termed GLC4/Sb30 cells, poorly accumulated antimony through an enhanced cellular efflux of metal, thus suggesting up-regulation of a membrane export system in these cells. Indeed, GLC4/Sb30 cells were found to display a functional overexpression of the multidrug resistance-associated protein MRP1, a drug export pump, as demonstrated by Western blotting, reverse transcriptase-polymerase chain reaction and calcein accumulation assays. Moreover, MK571, a potent inhibitor of MRP1 activity, was found to markedly down-modulate resistance of GLC4/Sb30 cells to antimony and to decrease cellular export of the metal. Taken together, our data support the conclusion that overexpression of functional MRP1 likely represents one major mechanism by which human cells can escape the cytotoxic effects of heavy metals. (+info)Expression cloning for arsenite-resistance resulted in isolation of tumor-suppressor fau cDNA: possible involvement of the ubiquitin system in arsenic carcinogenesis. (2/791)
Arsenic is a human carcinogen whose mechanism of action is unknown. Previously, this laboratory demonstrated that arsenite acts as a comutagen by interfering with DNA repair, although a specific DNA repair enzyme sensitive to arsenite has not been identified. A number of stable arsenite-sensitive and arsenite-resistant sublines of Chinese hamster V79 cells have now been isolated. In order to gain understanding of possible targets for arsenite's action, one arsenite-resistant subline, As/R28A, was chosen as a donor for a cDNA expression library. The library from arsenite-induced As/R28A cells was transfected into arsenite-sensitive As/S5 cells, and transfectants were selected for arsenite-resistance. Two cDNAs, asr1 and asr2, which confer arsenite resistance to arsenite-hypersensitive As/S5 cells as well as to wild-type cells, were isolated. asr1 shows almost complete homology with the rat fau gene, a tumor suppressor gene which contains a ubiquitin-like region fused to S30 ribosomal protein. Arsenite was previously shown to inhibit ubiquitin-dependent proteolysis. These results suggest that the tumor suppressor fau gene product or some other aspect of the ubiquitin system may be a target for arsenic toxicity and that disruption of the ubiquitin system may contribute to the genotoxicity and carcinogenicity of arsenite. (+info)Protein-damaging stresses activate c-Jun N-terminal kinase via inhibition of its dephosphorylation: a novel pathway controlled by HSP72. (3/791)
Various stresses activate the c-Jun N-terminal kinase (JNK), which is involved in the regulation of many aspects of cellular physiology, including apoptosis. Here we demonstrate that in contrast to UV irradiation, heat shock causes little or no stimulation of the JNK-activating kinase SEK1, while knocking out the SEK1 gene completely blocks heat-induced JNK activation. Therefore, we tested whether heat shock activates JNK via inhibition of JNK dephosphorylation. The rate of JNK dephosphorylation in unstimulated cells was high, and exposure to UV irradiation, osmotic shock, interleukin-1, or anisomycin did not affect this process. Conversely, exposure of cells to heat shock and other protein-damaging conditions, including ethanol, arsenite, and oxidative stress, strongly reduced the rate of JNK dephosphorylation. Under these conditions, we did not observe any effects on dephosphorylation of the homologous p38 kinase, suggesting that suppression of dephosphorylation is specific to JNK. Together, these data indicate that activation of JNK by protein-damaging treatments is mediated primarily by inhibition of a JNK phosphatase(s). Elevation of cellular levels of the major heat shock protein Hsp72 inhibited a repression of JNK dephosphorylation by these stressful treatments, which explains recent reports of the suppression of JNK activation by Hsp72. (+info)Complexes containing activating transcription factor (ATF)/cAMP-responsive-element-binding protein (CREB) interact with the CCAAT/enhancer-binding protein (C/EBP)-ATF composite site to regulate Gadd153 expression during the stress response. (4/791)
Gadd153, also known as chop, encodes a member of the CCAAT/enhancer-binding protein (C/EBP) transcription factor family and is transcriptionally activated by cellular stress signals. We recently demonstrated that arsenite treatment of rat pheochromocytoma PC12 cells results in the biphasic induction of Gadd153 mRNA expression, controlled in part through binding of C/EBPbeta and two uncharacterized protein complexes to the C/EBP-ATF (activating transcription factor) composite site in the Gadd153 promoter. In this report, we identified components of these additional complexes as two ATF/CREB (cAMP-responsive-element-binding protein) transcription factors having differential binding activities dependent upon the time of arsenite exposure. During arsenite treatment of PC12 cells, we observed enhanced binding of ATF4 to the C/EBP-ATF site at 2 h as Gadd153 mRNA levels increased, and enhanced binding of ATF3 complexes at 6 h as Gadd153 expression declined. We further demonstrated that ATF4 activates, while ATF3 represses, Gadd153 promoter activity through the C/EBP-ATF site. ATF3 also repressed ATF4-mediated transactivation and arsenite-induced activation of the Gadd153 promoter. Our results suggest that numerous members of the ATF/CREB family are involved in the cellular stress response, and that regulation of stress-induced biphasic Gadd153 expression in PC12 cells involves the ordered, sequential binding of multiple transcription factor complexes to the C/EBP-ATF composite site. (+info)Teratogen-induced cell death in postimplantation mouse embryos: differential tissue sensitivity and hallmarks of apoptosis. (5/791)
Teratogen-induced cell death is a common event in the pathogenesis associated with tissues destined to be malformed. Although the importance of this cell death is recognized, little information is available concerning the biochemistry of teratogen-induced cell death. We show that three teratogens, hyperthermia, cyclophosphamide and sodium arsenite induce an increase in cell death in day 9.0 mouse embryos with concurrent induction of DNA fragmentation, activation of caspase-3 and the cleavage of poly (ADP-ribose) polymerase (PARP). Teratogen-induced cell death is also selective, i. e., some cells within a tissue die while others survive. In addition, cells within some tissues die when exposed to teratogens while cells in other tissues are relatively resistant to teratogen-induced cell death. An example of the latter selectivity is seen in the cells of the developing heart, which are resistant to the cytotoxic potential of many teratogens. We show that the absence of cell death in the heart is accompanied by the complete lack of DNA fragmentation, activtion of caspase-3 and the cleavage of PARP. (+info)Pathways of As(III) detoxification in Saccharomyces cerevisiae. (6/791)
Saccharomyces cerevisiae has two independent transport systems for the removal of arsenite from the cytosol. Acr3p is a plasma membrane transporter that confers resistance to arsenite, presumably by arsenite extrusion from the cells. Ycf1p, a member of the ABC transporter superfamily, catalyzes the ATP-driven uptake of As(III) into the vacuole, also producing resistance to arsenite. Vacuolar accumulation requires a reductant such as glutathione, suggesting that the substrate is the glutathione conjugate, As(GS)3. Disruption of either the ACR3 or YCF1 gene results in sensitivity to arsenite and disruption of both genes produces additive hypersensitivity. Thus, Acr3p and Ycf1p represent separate pathways for the detoxification of arsenite in yeast. (+info)Sodium arsenite enhances copper accumulation in human lung adenocarcinoma cells. (7/791)
In this report, we found that arsenite-resistant human lung adenocarcinoma cells, CL3R15, were more susceptible to CuCl2 than the parental CL3 cells. With the aid of atomic absorption spectrophotometry, we observed that CL3R15 cells accumulated more copper than CL3 cells. We further demonstrated that sodium arsenite treatment resulted in a dose-dependent increase of copper accumulation in the parental CL3 cells. In contrast, copper did not alter the levels of intracellular arsenite in CL3 cells treated in combination with sodium arsenite and CuCl2. Pretreatment of CL3 cells with sodium arsenite resulted in a significant increase of copper accumulation and cytotoxicity. These results indicate that intracellular copper accumulation is enhanced by arsenite. However, arsenite-enhanced copper accumulation was not observed in two fibroblastic cells, GM00220 and GM03700, derived from Menkes patients. The Menkes gene encodes a membrane pump responsible for copper exportation. Our results suggest that Menkes protein is a potential target of arsenite. (+info)Asp45 is a Mg2+ ligand in the ArsA ATPase. (8/791)
The ATPase activity of ArsA, the catalytic subunit of the plasmid-encoded, ATP-dependent extrusion pump for arsenicals and antimonials in Escherichia coli, is allosterically activated by arsenite or antimonite. Magnesium is essential for ATPase activity. To examine the role of Asp45, mutants were constructed in which Asp45 was changed to Glu, Asn, or Ala. Cells expressing these mutated arsA genes lost arsenite resistance to varying degrees. Purified D45A and D45N enzymes were inactive. The purified D45E enzyme exhibited approximately 5% of the wild type activity with about a 5-fold decrease in affinity for Mg2+. Intrinsic tryptophan fluorescence was used to probe Mg2+ binding. ArsA containing only Trp159 exhibited fluorescence enhancement upon the addition of MgATP, which was absent in D45N and D45A. As another measure of conformation, limited trypsin digestion was used to estimate the surface accessibility of residues in ArsA. ATP and Sb(III) synergistically protected wild type ArsA from trypsin digestion. Subsequent addition of Mg2+ increased trypsin sensitivity. D45N and D45A remained protected by ATP and Sb(III) but lost the Mg2+ effect. D45E exhibited an intermediate Mg2+ response. These results indicate that Asp45 is a Mg2+-responsive residue, consistent with its function as a Mg2+ ligand. (+info)
Sodium arsenite exposure at concentration |5 M may induce embryotoxic and
Dose dependent effects of sodium arsenite on NF-κB and interleukin-8 in bronchial epithelial cells. :: Dartmouth Dissertations
Arsenite exposure in human lymphoblastoid cell lines induces autophagy and coordinated induction of lysosomal genes<...
Sodium arsenite induces cyclooxygenase-2 expression in human uroepithelial cells through MAPK pathway activation and reactive...
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Arsenite-Induced Pseudo-Hypoxia Results in Loss of Anchorage-Dependent Growth in BEAS-2B Pulmonary Epithelial Cells
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Sensitivity of Myelomonocytic Leukemia Cells to Arsenite-Induced Cell Cycle Disruption, Apoptosis, and Enhanced Differentiation...
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Taurine resumed neuronal differentiation in arsenite-treated N2a cells through reducing oxidative stress, endoplasmic reticulum...
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Sodium arsenite induces heat shock protein-72 kilodalton expression in the lungs and protects rats against sepsis -AMiner
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S cerevisiae ACR3 protein
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These extra samples showed diminished mutant RAX protein in the rep mouse and no RAX in the RAX2/2 mouse brains (Determine 8B) ...
Mechanism of sodium arsenite-mediated induction of heme oxygenase-1 in by Kimberly K. Elbirt, Alan J. Whitmarsh et al.
Heme oxygenase is the major 32-kDa stress protein induced in human skin fibroblasts by UVA radiation, hydrogen peroxide, and...
Autophagy is the predominant process induced by arsenite in human lymphoblastoid cell lines<...
The C-terminal, third conserved motif of the protein activator PACT plays an essential role in the activation of double...
Arsenite-resistant Leishmania donovani promastigotes express an enhanced membrane P-type adenosine triphosphatase activity that...
Cardiovascular Consequences of Arsenic Exposure in Mice: Using Echocardiography to Measure Left Ventricular Hypertrophy
ASNA1 (arsA arsenite transporter, ATP-binding, homolog 1 (bacterial))
Stony Brook University Richard J. Reeder
Pathogens in grapevine
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Environmentally Relevant Concentrations of Arsenite Induce Dose-Dependent Differential Genotoxicity Through Poly(ADP-Ribose)...
Formation of stress granules inhibits apoptosis by suppressing stress-responsive MAPK pathways
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Decreasing arsenic accumulation in rice by overexpressing OsNIP1;1 and OsNIP3;3 through disrupting arsenite radial transport in...
Both near ultraviolet radiation and the oxidizing agent hydrogen peroxide induce a 32-kDa stress protein in normal human skin...
Efflux permease CgAcr3-1 of Corynebacterium glutamicum is an arsenite-specific antiporter. | SBRC
The inhibition of tissue respiration and alcoholic fermentation at different catabolic levels by ethyl carbamate (urethan) and...
Coexisting arsenate and arsenite adsorption from water using porous pellet adsorbent: Optimization by response surface...
Comment on Effects of Arsenite during Fetal Development on Energy Metabolism and Susceptibility to Diet-Induced Fatty Liver...
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Heat shock causes a decrease in polysomes and the appearance of stress granules in trypanosomes independently of eIF2α...
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OPUS at UTS: Influence of EDTA and chemical species on arsenic accumulation in Spirodela polyrhiza L. (duckweed) - Open...
Ars operon - Wikipedia
Involvement of a Toxoplasma DEAD-box RNA Helicase in Post-transcriptio by Ahmed Cherry
Modulation of DNA polymerase beta-dependent base excision repair in cultured human cells after low dose exposure to arsenite -...
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Vanarsite
... has been determined to be part of the vanadate, arsenite, and arsenate groups. Analytical methods were used to ... arsenite)) and decorated by peripheral tetrahedra (As5+O4 (arsenate)). Each peripheral tetrahedra shares three of its four ...
Timeline of Eastern Orthodoxy in Greece (1204-1453)
1310 Arsenite Schism of Constantinople is officially ended by the reconciliation of the Arsenites to the Josephites, in a ... 1265-1310 Arsenite Schism of Constantinople, beginning when Patr. Arsenius Autorianus excommunicated emperor Michael VIII ... 18(1948), 202-220.) Alexander P. Kahzdan (Ed). "Arsenites." The Oxford Dictionary of Byzantium. Oxford University Press, 2012. ...
Arsenate reductase (cytochrome c)
... (EC 1.20.2.1, arsenite oxidase) is an enzyme with systematic name arsenite:cytochrome c ... vanden Hoven RN, Santini JM (June 2004). "Arsenite oxidation by the heterotroph Hydrogenophaga sp. str. NT-14: the arsenite ... This enzyme catalyses the following chemical reaction arsenite + H2O + 2 oxidized cytochrome c ⇌ {\displaystyle \ ... "Arsenite oxidase from Ralstonia sp. 22: characterization of the enzyme and its interaction with soluble cytochromes". The ...
Arsenic
Arsenite is the most stable soluble form of arsenic in reducing environments and arsenate, which is less mobile than arsenite, ... Arsenite is more soluble and mobile than arsenate. Many species of bacteria can transform arsenite to arsenate in anoxic ... Chemoautotrophic arsenite oxidizers (CAO) and heterotrophic arsenite oxidizers (HAO) convert As(III) into As(V). CAO combine ... Arsenite of lime and arsenate of lead were used widely as insecticides until the discovery of DDT in 1942. The toxicity of ...
Arsenate mineral
Arsenite minerals are much less common. Both the Dana and the Strunz mineral classifications place the arsenates in with the ...
Scheele's Green
... , also called Schloss Green, is chemically a cupric hydrogen arsenite (also called copper arsenite or acidic ... This produced a sodium arsenite solution. Added to a copper sulfate solution, it produced a green precipitate of effectively ... copper arsenite salt (CuHAsO 3 and Cu(AsO 3) 2·3H 2O)), neutral copper orthoarsenite (3CuO·As 2O 3·2H 2O), copper arsenate ( ... Arsenites, Copper(II) compounds, Inorganic pigments, Inorganic insecticides). ...
Arsenic trioxide
Thus, it dissolves readily in alkaline solutions to give arsenites. It is less soluble in acids, although it will dissolve in ... Bulk arsenic-based compounds sodium arsenite and sodium cacodylate are derived from the trioxide.[citation needed] A variety of ...
Arsenate reductase (azurin)
The systematic name of this enzyme class is arsenite:azurin oxidoreductase. This enzyme is also called arsenite oxidase. The ... Ellis PJ, Conrads T, Hille R, Kuhn P (2001). "Crystal structure of the 100 kDa arsenite oxidase from Alcaligenes faecalis in ... Arsenate reductase (azurin) (EC 1.20.9.1) is an enzyme that catalyzes the chemical reaction arsenite + H2O + 2 azurinox ⇌ {\ ... Anderson GL, Williams J, Hille R (1992). "The purification and characterization of arsenite oxidase from Alcaligenes faecalis, ...
Comamonas terrae
nov., an arsenite-oxidizing bacterium isolated from agricultural soil in Thailand". J. Gen. Appl. Microbiol. 58 (3): 245-51. ... C. terrae has an arsenite-oxidizing ability. "Genus: Comamonas". Retrieved 2013-05-10. "NBRC 106524 Strain Passport - ...
Marinobacter santoriniensis
nov., an arsenate-respiring and arsenite-oxidizing bacterium isolated from hydrothermal sediment". International Journal of ... Marinobacter santoriniensis can metabolize arsenate and arsenite. A.C. Parte. "Marinobacter". LPSN. Retrieved 2016-08-18. " ...
Variovorax paradoxus
MM-1 isolated from a soil and identification of arsenite oxidase gene". Journal of Hazardous Materials. 262: 997-1003. doi: ... Bahar, Md Mezbaul; Megharaj, Mallavarapu; Naidu, Ravi (2013-11-15). "Kinetics of arsenite oxidation by Variovorax sp. ...
ARC3 family
The generalized reaction catalyzed by members of the ACR3 family is: arsenite or antimonite (in) → arsenite or antimonite (out ... The former yeast protein is present in the plasma membrane and pumps arsenite and antimonite, but not arsenate, tellurite, ... Mansour, Nahla M.; Sawhney, Mrinalini; Tamang, Dorjee G.; Vogl, Christian; Saier, Milton H. (2007-02-01). "The bile/arsenite/ ... Aaltonen, Emil K. J.; Silow, Maria (2008-04-01). "Transmembrane topology of the Acr3 family arsenite transporter from Bacillus ...
Flavobacterium arsenitoxidans
nov., an arsenite-oxidizing bacterium from Thai soil". Antonie van Leeuwenhoek. 106 (6): 1239-46. doi:10.1007/s10482-014-0294-1 ... Flavobacterium arsenitoxidans is a Gram-negative, arsenite-oxidizing, non-spore-forming, rod-shaped and aerobic bacterium from ...
Xenophilus arseniciresistens
nov., an arsenite-resistant bacterium isolated from soil". International Journal of Systematic and Evolutionary Microbiology. ... Xenophilus arseniciresistens is a Gram-negative, aerobic, arsenite-resistant and motile bacterium from the genus Xenophilus ...
ArsB and ArsAB transporters
Arsenite or Antimonite (out). The overall reaction catalyzed by ArsB-ArsA is: Arsenite or Antimonite (in) + ATP ⇌ Arsenite or ... Arsenic toxicity Arsenite Antimonite Ion transporter Ion transporter superfamily ARC3 family Arsenite-Antimonite efflux ... Arsenite resistance (Ars) efflux pumps of bacteria may consist of two proteins, ArsB (TC# 2.A.45.1.1; the integral membrane ... These pumps actively expel both arsenite and antimonite. Homologues of ArsB are found in Gram-negative and Gram-positive ...
Microbial electrochemical technologies
Ceballos-Escalera, A., et al., Electro-bioremediation of nitrate and arsenite polluted groundwater. Water Res, 2021. 190: p. ... or in combination with other co-contaminants such as arsenite. In comparison to traditional denitrification which involves ...
Xenophilus (bacterium)
nov., an arsenite-resistant bacterium isolated from soil". International Journal of Systematic and Evolutionary Microbiology. ...
Cancer epigenetics
... arsenite, hexachlorobenzene, and nickel compounds. Many teratogens exert specific effects on the fetus by epigenetic mechanisms ...
EIF2AK1
Induced by oxidative stress generated by arsenite treatment. Binding of nitric oxide (NO) to the heme iron in the N-terminal ...
Agrobacterium albertimagni
... is a species of arsenite-oxidizing bacterium. Salmassi, Tina M.; Venkateswaren, Kasthuri; Satomi, ... Masataka; Newman, Dianne K.; Hering, Janet G. (2002). "Oxidation of Arsenite by Agrobacterium albertimagni , AOL15, sp. nov., ...
Phosphate phosphite
On heating, Related to these are the nitrite nitrates and arsenate arsenites. Petrosyants, S. P. (December 2013). "Coordination ...
Green pigments
... cupric arsenite (CuHAsO3). Green earth: also known as terre verte and Verona green (K[(Al,Fe3+),(Fe2+,Mg](AlSi3,Si4)O10(OH)2). ... made by a reaction of sodium arsenite with copper(II) acetate. While it makes a beautiful rich green, the color of the emerald ...
List of inorganic pigments
... cupric arsenite (CuHAsO3). Other pigments Green earth: also known as terre verte and Verona green (K[(Al,Fe3+),(Fe2+,Mg](AlSi3, ...
Bezoar
The toxic compounds in arsenic are arsenate and arsenite; each is acted upon differently by the bezoars: arsenate is removed by ... being exchanged for phosphate in brushite found in the stones, while arsenite is bound to sulfur compounds in the protein of ...
Arsenate-reducing bacteria
Arsenite (As(+3)), has a pKa of 9.3, and occurs at a neutral or acidic pH as As(OH)3. Arsenite in water can be thought of as an ... On the other hand, arsenite is more common in anaerobic environments, more mobile, and more toxic than arsenate. Arsenite is 25 ... Living cells (microbial or human) are generally exposed to arsenic as arsenate or arsenite. Arsenate (As(+5)) has a pKa of 7.0 ... In microbial biofilms growing on the rock surfaces of anoxic brine pools fed by hot springs containing arsenite and sulfide at ...
List of hyperaccumulators
The presence or absence of P does not affect the uptake of arsenite, which translocates more easily than arsenate. C. Tu, L.Q. ... arsenite as a noncompetitive inhibitor). Priel 1995. Gurta et al. 1994 L.E. Bennetta; J.L. Burkheada; K.L. Halea; N. Terry; M. ... the plants then absorbs 10 times more arsenate than arsenite. If on the other hand the P supply is increased, As uptake ...
Achromobacter arsenitoxydans
... has the ability to oxidize arsenite to arsenate. The complete genome of A. arsenitoxydans has been ...
Lysobacter arseniciresistens
nov., an arsenite-resistant bacterium isolated from iron-mined soil". International Journal of Systematic and Evolutionary ... Lysobacter arseniciresistens is a Gram-positive, rod-shaped, aerobic, arsenite-resistant and motile bacterium from the genus of ...
Ars operon
This two-subunit enzyme produces resistance to arsenite and antimonite. Arsenate, however, must first be reduced to arsenite ... It is required for the detoxification of arsenate, arsenite, and antimonite. This system transports arsenite and antimonite out ... thus increasing its ATPase activity at lower concentrations of arsenite and enhancing the rate of arsenite extrusion. Carlin A ... ArsC is an approximately 150-residue arsenate reductase that uses reduced glutathione (GSH) to convert arsenate to arsenite ...
Arsenic poisoning
2001) with arsenite-exposed human lung A549, kidney UOK123, UOK109 and UOK121 cells isolated eight different DNA fragments by ... Cavigelli M, Li WW, Lin A, Su B, Yoshioka K, Karin M (November 1996). "The tumor promoter arsenite stimulates AP-1 activity by ... MRP1-overexpressing lung tumor GLC4/Sb30 cells poorly accumulate arsenite and arsenate. This is mediated through MRP-1 ... Zhong CX, Mass MJ (July 2001). "Both hypomethylation and hypermethylation of DNA associated with arsenite exposure in cultures ...
Arsenite - Wikipedia
Some arsenite salts can be prepared from an aqueous solution of As2O3. Examples of these are the meta-arsenite salts and at low ... A number of different arsenite anions are known: AsO3−3 ortho-arsenite, an ion of arsenous acid, with a pyramidal shape (AsO−2) ... Well known examples of arsenites include sodium meta-arsenite which contains a polymeric linear anion, (AsO−2)n, and silver ... IUPAC have recommended that arsenite compounds are to be named as arsenate(III), for example ortho-arsenite is called ...
Amplification of arsH Gene in Lactobacillus acidophilus Resistant to Arsenite
... Vartika Sinha, Ritesh Mishra, Abhinav Kumar, ... Amplification of arsH Gene in Lactobacillus acidophilus Resistant to Arsenite. Biotechnology, 10: 101-107. DOI: 10.3923/biotech ... In the present study in vitro resistance against arsenite (up to 32 ppm) was developed in Lactobacillus acidophilus and the ... The arsenite-resistant strain IITR-RKU1 showed similar growth phase patterns to that of normal parent strain in the absence or ...
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Table 2 - Foodborne Origin and Local and Global Spread of Staphylococcus saprophyticus Causing Human Urinary Tract Infections -...
IMSEAR at SEARO: Induction of prophage lambda by nitrofurantoin and its modulation by butylated hydroxytoluene, sodium arsenite...
Butylated hydroxytoluene(BHT) and sodium arsenite enhanced the nitrofurantoin induced prophage-lambda induction in E. coli GY ... Induction of prophage lambda by nitrofurantoin and its modulation by butylated hydroxytoluene, sodium arsenite and alpha ... Induction of prophage lambda by nitrofurantoin and its modulation by butylated hydroxytoluene, sodium arsenite and alpha ... were achieved with 100 micrograms/ml BHT and 250 micrograms/ml sodium arsenite corresponding to a nitrofurantoin concentration ...
Arsenical Keratosis: Background, Pathophysiology, Etiology
Arsenite impairs nucleotide excision repair, [2] and it may also affect gene expression by increasing or decreasing DNA ... Genotoxic effects of sodium arsenite on human cells. Mutat Res. 1992 Dec 16. 284(2):215-21. [QxMD MEDLINE Link]. ... potassium arsenite. [12] In Asia, Chinese proprietary herbal medicine has been the mainstay of remedies for thousands of years ...
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Modified Na-Arsenite Method - ECRD
Arsenic activates EGFR pathway signaling in the lung
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Gallic acid ameliorates sodium arsenite-induced renal and hepatic toxicity. | GenX SocialHub
Gallic acid ameliorates sodium arsenite-induced renal and hepatic toxicity.. This entry was posted by admin on April 22, 2019 ... The present study investigated effects of GA against sodium arsenite (SA)-induced renal and hepatic toxicity. Thirty-five rats ... Gallic acid ameliorates sodium arsenite-induced renal and hepatic toxicity in rats. ...
Contrasting evolutionary genome dynamics between domesticated and wild yeasts | Nature Genetics
Phenotyping the growth rates of yeast strains in copper- and arsenite-rich medium.. The homozygous diploid versions of the 12 ... To examine their conditional growth rates in copper- and arsenite-rich environment, we mixed 350 μl conditional medium (CuCl2 ( ... 0.38 mM) and arsenite (As(III), 3 mM) for the two environment respectively) with 10 μl saturated culture to the wells of ... supplemented with varying arsenite concentrations (0, 1, 2, and 3 mM). Using the deviations between the POL phenotype and the ...
Arsenic | Medical Management Guidelines | Toxic Substance Portal | ATSDR
This medical management guide focuses specifically on arsenic trioxide (an arsenite), which is one of the most toxic forms of ... Ingestion is the main route of exposure to other arsenites and arsenates for the general population. Overexposure may result ... and are several times less toxic than the arsenites. Elemental arsenic has a gray metal-like appearance, is insoluble in water ...
Physiological responses and transcriptome analyses of upland rice following exposure to arsenite and arsenate
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In summary, IDTs RF portfolio replaces gallium arsenite parts, results in higher reliability, provides better signal-to-noise ... In summary, IDTs RF portfolio replaces gallium arsenite parts, results in higher reliability, provides better signal-to-noise ... improves reliability by replacing gallium arsenite with silicon; improves data throughput by optimizing signal-to-noise ... improves reliability by replacing gallium arsenite with silicon; improves data throughput by optimizing signal-to-noise ...
Louis Pasteur lecture notes on crystal structure, tartaric acid, and arsenites (3 of 4) - Science History Institute Digital...
... and arsenites. This work led to the field of stereochemistry. ... and Arsenites (3 of 4)." Louis Pasteur Lecture Notes on Crystal ... Louis Pasteur lecture notes on crystal structure, tartaric acid, and arsenites (3 of 4) *Part of Louis Pasteur lecture notes on ... Louis Pasteur lecture notes on crystal structure, tartaric acid, and arsenites (3 of 4) ... Louis Pasteur lecture notes on crystal structure, tartaric acid, and arsenites (1 of 4) ...
Acute and long-term effects of arsenite in HepG2 cells: Modulation of insulin signaling<...
Arsenite exposure resulted in attenuation of FoxO DNA binding and in nuclear exclusion of FoxO1a-EGFP. A 24-h exposure of HepG2 ... Interestingly, arsenite-induced long-term effects on G6Pase and SelP mRNA or SelP protein levels were not blocked by the PI3K ... Arsenite exposure resulted in attenuation of FoxO DNA binding and in nuclear exclusion of FoxO1a-EGFP. A 24-h exposure of HepG2 ... Interestingly, arsenite-induced long-term effects on G6Pase and SelP mRNA or SelP protein levels were not blocked by the PI3K ...
ADR 2021 | UN 1712, ZINC ARSENATE, ZINC ARSENITE or ZINC ARSENATE AND
PDF) Glutathione Metabolism and Its Implications for Health
Suppression of Fas ligand expression on endothelial cells by arsenite through reactive oxygen species<...
keywords = "Arsenite, ECV304, Fas ligand, Reactive oxygen species (ROS)",. author = "Tsai, {S. H.} and Ming-Shium Hsieh and L. ... Chronic exposure to arsenite is associated with vascular disease, such as arteriosclerosis. However, the cellular mechanisms ... Suppression of Fas ligand expression on endothelial cells by arsenite through reactive oxygen species. In: Toxicology Letters. ... Suppression of Fas ligand expression on endothelial cells by arsenite through reactive oxygen species. / Tsai, S. H.; Hsieh, ...
Rapid oxidation of arsenite in a hot spring ecosystem, Yellowstone National Park<...
Arsenite (As(III)) is often the predominant valence state at the point of discharge but is rapidly oxidized to arsenate (As(V ... Arsenite (As(III)) is often the predominant valence state at the point of discharge but is rapidly oxidized to arsenate (As(V ... Arsenite (As(III)) is often the predominant valence state at the point of discharge but is rapidly oxidized to arsenate (As(V ... Arsenite (As(III)) is often the predominant valence state at the point of discharge but is rapidly oxidized to arsenate (As(V ...
Flow injection analysis of an ultratrace amount of arsenite using a Prussian blue-modified screen-printed electrode | NCHU...
We report here a new electrochemical method for the selective detection of ultratrace amount of arsenite (AsO2-, As3+) using a ... The sensitivity was good enough to detect arsenite at levels lower than the current EPA standard. This modified electrode ... Flow injection analysis of an ultratrace amount of arsenite using a Prussian blue-modified screen-printed electrode. ...
Graemite Mineral Data
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Angiosarcoma: Practice Essentials, Pathophysiology, Etiology
Frontiers | FAIM Is a Non-redundant Defender of Cellular Viability in the Face of Heat and Oxidative Stress and Interferes With...
E,F) Primary fibroblasts from WT and FAIM KO mice were subjected to menadione-induced (E) and arsenite-induced (F) oxidative ... 2008). Differential roles for Nrf2 and AP-1 in upregulation of HO-1 expression by arsenite in murine embryonic fibroblasts. ... and by arsenite (Figure 1F) to be much greater in FAIM-deficient primary fibroblasts as compared to WT fibroblasts. In both ... and arsenite- (Harada et al., 2008; Kim et al., 2015) induced oxidative stress. Consistent with the cell line results, we found ...
SodiumArsenate and arseniteExposureMeta-arseniteDifferent arsenitePotassium arseniteAqueous solutionCopperArsenatesBacteriaInorganicOxidativeHydroxidesToxicityEffluxMethyltransferaseRiceAnionsProteinGenesToleranceToxicAcidIonsGeneHeLaProteinsReductionCompoundsCellsPredominantSpeciesResistantFormReactionWaterBacterial
Sodium13
- Well known examples of arsenites include sodium meta-arsenite which contains a polymeric linear anion, (AsO−2)n, and silver ortho-arsenite, Ag3AsO3, which contains the trigonal AsO3−3 anion. (wikipedia.org)
- Sodium arsenite is used in the water gas shift reaction to remove carbon dioxide. (wikipedia.org)
- IMSEAR at SEARO: Induction of prophage lambda by nitrofurantoin and its modulation by butylated hydroxytoluene, sodium arsenite and alpha tocopherol. (who.int)
- Butylated hydroxytoluene(BHT) and sodium arsenite enhanced the nitrofurantoin induced prophage-lambda induction in E. coli GY 5027(lambda) cells in a dose dependent manner. (who.int)
- The maximum modulations in induction level (I/Io) were achieved with 100 micrograms/ml BHT and 250 micrograms/ml sodium arsenite corresponding to a nitrofurantoin concentration of 15 micrograms/ml and were found significant on statistical analysis. (who.int)
- Gallic acid ameliorates sodium arsenite-induced renal and hepatic toxicity. (genx-digital.com)
- Gallic acid ameliorates sodium arsenite-induced renal and hepatic toxicity in rats. (genx-digital.com)
- The present study investigated effects of GA against sodium arsenite (SA)-induced renal and hepatic toxicity. (genx-digital.com)
- Coenzyme Q10 counteracts testicular injury induced by sodium arsenite in rats. (greenmedinfo.com)
- As swarms of locusts (aka grasshoppers) descended "like a plague to destroy green things in the Near East," bedouins enlisted the help of walls of zinc, which killed the wild horde in droves, and sodium arsenite (mixed with bran and molasses, for fiber and flavor), which they would sprinkle in locust territory to poison them. (popsci.com)
- A. Adetutu, O. A. Odunola, O. A. Owoade, O. A. Adeleke and O. A. Amuda, "Anticlastogenic Effects of Hibiscus sabdariffa Fruits against Sodium Arsenite-Induced Micronuclei Formation in Erythrocytes in Mouse Bone Marrow," Phytotherapy Research, Vol. 18, No. 10, 2004, pp. 862-864. (scirp.org)
- The use of inorganic arsenicals (sodium arsenite and arsenic trioxide) as herbicides has been reduced greatly because of livestock losses, the long-lasting effects on the environment, and their association with causing cancer. (merckvetmanual.com)
- The pesticides, which contain sodium arsenite, are now banned, but were used by Murat to treat his vines for esca, a parasitic fungi that attacks the trunks of grapevines. (thedrinksbusiness.com)
Arsenate and arsenite1
- The major arsenic species extracted from all samples were arsenate and arsenite, which are toxic forms of arsenic. (ubc.ca)
Exposure12
- Arsenite exposure significantly lowered all brain functions (neurochemicals, AChE, and BDNF) as well as cellular antioxidant activities, increased inflammatory and oxidative stress biomarkers, and the antiapoptotic Bcl2 gene, and upregulated apoptotic Bax and Casp3 genes. (edu.sa)
- The present study aimed at investigating the effect of short and long-term exposure to arsenite on insulin signaling in HepG2 human hepatoma cells, the role of PI3K/Akt signaling therein and the modulation of target genes controlled by insulin. (edu.au)
- Exposure of cells to arsenite for 24 h rendered cells less responsive toward stimulation of Akt by insulin. (edu.au)
- At the same time, short-term exposure to arsenite induced a concentration- dependent increase in phosphorylation of Akt at Ser-473, followed by phosphorylation of FoxO proteins at sites known to be phosphorylated by Akt. (edu.au)
- Arsenite exposure resulted in attenuation of FoxO DNA binding and in nuclear exclusion of FoxO1a-EGFP. (edu.au)
- A 24-h exposure of HepG2 cells to submicromolar concentrations of arsenite resulted in downregulation of glucose 6-phosphatase (G6Pase) and selenoprotein P (SelP) mRNA levels. (edu.au)
- Ingestion is the main route of exposure to other arsenites and arsenates for the general population. (cdc.gov)
- Chronic exposure to arsenite is associated with vascular disease, such as arteriosclerosis. (elsevier.com)
- Indeed, our data indicate that arsenite exposure to stem cell-derived embryoid bodies reduces the expression of MyoD, Myf5, and myogenin, all transcription factors needed to differentiate stem cells into skeletal myocytes. (usda.gov)
- Our preliminary data indicates that arsenite exposure only during embryogenesis reduces weight gain in offspring even 4 months later. (usda.gov)
- In the first aim, we will determine whether exposure to low arsenite concentrations during embryogenesis reduces the number and/or localization of the satellite cells as the organism develops into an adult. (usda.gov)
- European Standard EN 149 approved respirator if exposure limits are exceeded or if irritation or other symptoms are experienced. (chemcas.com)
Meta-arsenite3
- A number of different arsenite anions are known: AsO3−3 ortho-arsenite, an ion of arsenous acid, with a pyramidal shape (AsO−2)n meta-arsenite, a polymeric chain anion. (wikipedia.org)
- Examples of these are the meta-arsenite salts and at low temperature, hydrogen arsenite salts can be prepared, such as Na2H2As4O8, NaAsO2·4H2O, Na2HAsO3·5H2O and Na5(HAsO3)(AsO3)·12H2O. (wikipedia.org)
- Fowler's solution first introduced in the 18th century was made up from As2O3 as a solution of potassium meta-arsenite, KAsO2. (wikipedia.org)
Different arsenite1
- This part could be used to sense different arsenite concentrations in water. (igem.org)
Potassium arsenite2
- During the 19th and early 20th centuries, the most popular preparation in the Western world was called Fowler solution, which contained 1% potassium arsenite. (medscape.com)
- In fact, so many people suffered symptoms-such as rashes, stomach distress, and headaches-from taking arsenic remedies during the Victorian era that their ailments are now sometimes referred to as " Fowler's disease ,' after the popular remedy Fowler's Solution, which contained potassium arsenite. (mentalfloss.com)
Aqueous solution1
- Some arsenite salts can be prepared from an aqueous solution of As2O3. (wikipedia.org)
Copper2
- Secondary copper mineral formed by oxidation of arsenites. (webmineral.com)
- It's made from the PG36 phthalo green (yellow shade) pigment and PW5 white, rather than the original copper aceto-arsenite. (winsornewton.com)
Arsenates2
- Some species of bacteria obtain their energy by oxidizing various fuels while reducing arsenates to form arsenites. (wikipedia.org)
- In 2008, bacteria were discovered that employ a version of photosynthesis with arsenites as electron donors, producing arsenates (just like ordinary photosynthesis uses water as electron donor, producing molecular oxygen). (wikipedia.org)
Bacteria2
- The arsH gene and its homologs are fundamental to confer high level of arsenite resistance in bacteria. (scialert.net)
- Reduction of arsenate to arsenite partly accounted for the high tolerance of the bacteria to arsenate. (scielo.org.za)
Inorganic2
- Arsenite (As(III)) is a more toxic form of inorganic arsenic and its removal from drinking water is less effective compared with arsenate (As(V)). In the present study, synthetic birnessite ( δ -MnO 2 ) was used to investigate the oxidative transformation of arsenite into arsenate using batch experiments under different reaction conditions. (environmental-expert.com)
- Only inorganic arsenite (iAsIII) was stable during the extraction process. (lancs.ac.uk)
Oxidative1
- In the metal research area, he investigates the molecular mechanism of environmental arsenite and chromium-induced toxicology and carcinogenesis with particular attention to the roles of free radicals, oxidative and nitrosative modification of zinc-finger DNA repair proteins, and zinc supplement as a chemoprevention strategy for reducing arsenic toxicity and carcinogenesis. (unm.edu)
Hydroxides1
- Two possible processes affecting the As concentration are investigated: (1) oxidation of arsenopyrite or (2) desorption of arsenite/arsenate bound to iron hydroxides due to iron reduction. (slu.se)
Toxicity1
- This study aimed to explore the mechanism in detail the neuroprotection provided by CGA against arsenite-induced toxicity in mice and the underlying mechanisms involved. (edu.sa)
Efflux3
- In rice (Oryza sativa), arsenite uptake shares the highly efficient silicon (Si) pathway of entry to root cells and efflux towards the xylem. (elsevier.com)
- Hyperaccumulation appears to involve enhanced arsenate uptake, decreased arsenite-thiol complexation and arsenite efflux to the external medium, greatly enhanced xylem translocation of arsenite, and vacuolar sequestration of arsenite in fronds. (elsevier.com)
- Functional screening and end-sequencing of large insert fosmid libraries demonstrated that arsenic(V) resistance genes were taxonomically widespread and different class of arsenic resistance genes related to periplasmic arsenate reduction, arsenite efflux, bioaccumulation (phosphate, metal transporters) and arsenite oxidation were present. (ubc.ca)
Methyltransferase2
Rice2
- They also described that overexpression of OsGrx_C7 (protein found in rice) enhanced tolerance to arsenite and reduced arsenite accumulation in seeds and shoots of rice. (org.in)
- Silicon enhances abundances of reducing microbes in rhizoplane and decreases arsenite uptake by rice (Oryza sativa L. (donga.ac.kr)
Anions3
- Note that in fields that commonly deal with groundwater chemistry, arsenite is used generically to identify soluble AsIII anions. (wikipedia.org)
- Ortho-arsenite contrasts to the corresponding anions of the lighter members of group 15, phosphite which has the structure HPO2−3 and nitrite, NO−2 which is bent. (wikipedia.org)
- During growth, addition of arsenate or arsenite anions adversely affected biomass production and maximum specific growth rate and, in some instances, longer lag phases were induced. (scielo.org.za)
Protein2
- Curiously, arsenite had a dual effect on SelP protein levels, inducing a small increase in the nanomolar and a distinct decrease in the micromolar concentration range. (edu.au)
- Interestingly, arsenite-induced long-term effects on G6Pase and SelP mRNA or SelP protein levels were not blocked by the PI3K inhibitor, wortmannin. (edu.au)
Genes1
- In conclusion, arsenite perturbs cellular signaling pathways involved in fuel metabolism: it impairs cellular responsiveness toward insulin, while at the same time stimulating insulin-like signaling to attenuate the expression of genes involved in glucose metabolism and the release of the hepatokine SelP, which is known to modulate peripheral insulin sensitivity. (edu.au)
Tolerance1
- Concomitantly, arsenite Minimal Inhibitory Concentration (MIC), growth phase studies, antibiotic and heavy metal tolerance were tested for this strain. (scialert.net)
Toxic2
- Arsenite (As +3 ) is 4-10 times as toxic as arsenate (As +5 ). (msdvetmanual.com)
- generally arsenite (+3) is more toxic than arsenate (+5). (tjclark.com)
Acid3
- Third page of handwritten lecture notes with diagrams prepared by Louis Pasteur for a lecture to the National Academy of Medicine on the subject of crystal structures, tartaric acid, and arsenites. (sciencehistory.org)
- Some (~20 %) of arsenate was converted into arsenite, and a significant amount (~25 %) of dimethylarsinic acid (DMAsV) was converted into monomethylarsonic acid (MMAsV) or arsenate (AsV). (lancs.ac.uk)
- Further, reaction with periodate, arsenite and thiobarbituric acid gives a pink to red color chromophore, which is measured at 548 nm after stabilizing with DMSO. (bio-protocol.org)
Ions1
- Publicity of cells to non-haem tension inducers, including arsenite, cadmium ions, and DEM, led to the induction of HO-1 appearance, but only little changes had been proven in the creation of bilirubin (Fig. 4b,c). (bioednet.org)
Gene2
- The aim of the study was to develop arsenite resistance in Lactobacillus acidophilus and to show the presence of arsenical resistant gene in its plasmid. (scialert.net)
- In the present study in vitro resistance against arsenite (up to 32 ppm) was developed in Lactobacillus acidophilus and the gene responsible for high level of arsenite resistance ( arsH gene) was cloned and sequenced. (scialert.net)
HeLa2
- Description Distribution of 8-oxoG in (A) H2O2-treated Chlamydomonas and (B) Arsenite-treated HeLa cells. (qedbio.com)
- RBM4 has already been shown to be involved in myogenic differentiation and it has also been shown to interact with eIF4G and eIF4A in HeLa cells while under arsenite stress, what has not been investigated is whether RBM4 interacts with eIF4G or eIF4A or other parts of the translational machinery during myogenic differentiation. (bl.uk)
Proteins1
- A number of the aquaporin nodulin26-like intrinsic proteins (NIPs) are able to transport arsenite, the predominant form of As in reducing environments. (elsevier.com)
Reduction1
- Chemical arsenic speciation monitoring of the enrichments suggested that arsenite oxidation and arsenate reduction occurred. (ubc.ca)
Compounds1
- IUPAC have recommended that arsenite compounds are to be named as arsenate(III), for example ortho-arsenite is called trioxidoarsenate(III). (wikipedia.org)
Cells3
- The present study has demonstrated that arsenite not arsenate decreased the Fas ligand (FasL) expression on ECV304 cells through reactive oxygen species. (elsevier.com)
- Incubation of ECV304 cells with arsenite decreased the FasL expression and increased the intracellular peroxide levels. (elsevier.com)
- In root cells arsenate is rapidly reduced to arsenite, which is effluxed to the external medium, complexed by thiol peptides or translocated to shoots. (elsevier.com)
Predominant1
- Arsenite (As(III)) is often the predominant valence state at the point of discharge but is rapidly oxidized to arsenate (As(V)) during transport in shallow surface water. (edu.sa)
Species2
- These data suggested that arsenite initiates endothelium dysfunction, at least partly, by suppressing the FasL expression through activating reactive oxygen species sensitive endothelial cell signaling. (elsevier.com)
- According to the results of dissolved arsenic speciation-arsenite was thé oniy species found. (journaldephysique.org)
Resistant2
- The arsenite-resistant strain IITR-RKU1 showed similar growth phase patterns to that of normal parent strain in the absence or in presence of arsenite in the media. (scialert.net)
- Stenotrophomonas maltophilia SA Ant 15 was resistant to 10 mmol l -1 arsenite and 20 mmol l -1 arsenate, whereas S. marcescens SA Ant 16 grew in 15 mmol l -1 arsenite and in up to 500 mmol l -1 arsenate, making it the most arsenic-resistant organism described to date. (scielo.org.za)
Form2
- The mineral form of NiO (arsenite) is very rare. (iberocruceros.com)
- In most cases arsenite should be oxidized to arsenate so that it is converted to a form more easily removed. (resintech.com)
Reaction1
- In humans, arsenite inhibits pyruvate dehydrogenase (PDH complex) in the pyruvate-acetyl CoA reaction, by binding to the -SH group of lipoamide, a participant coenzyme. (wikipedia.org)
Water1
- Atomic Absorption Spectrometric Determination of Arsenite in Water Samples by Graphite Furnace After Extraction with Ammonium sec-Butyldithiophosphate. (epa.gov)
Bacterial1
- Enriched media yielded two pure bacterial cultures able to grow in both arsenite and arsenate. (scielo.org.za)