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Topic: Glutathione peroxidase

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	Glutathione - Wikipedia, the free encyclopedia
		Glutathione participates in leukotriene synthesis and is a cofactor for the enzyme glutathione peroxidase.
		Glutathione is also needed for the detoxification of methylglyoxal, a toxin produced as a by-product of metabolism.
		Glyoxalase II (EC 3.1.2.6) catalyzes the hydrolysis of S-D-Lactoyl-glutathione to glutathione and D-lactate.
	en.wikipedia.org /wiki/Glutathione (559 words)

	Glutathione (GSH) - Your Whey to Health
		Low glutathione levels are found in immune compromised individuals, neuro-degenerative diseases such as multiple sclerosis, ALS, Alzheimers, and Parkinson's disease, atherosclerosis, male infertility, pregnancy complications, cataracts, damage from many pharmaceutical drugs, cancer and poor survival rates for patients with AIDS.
		Depressed glutathione levels are associated with the increased generation of free radicals found in Parkinson’s patients, for example, and contributes to further brain cell death.
		Glutathione is essential in intermediary metabolism as a donor of sulfhydryl groups which are essential for the detoxification of acetaminophen.
	www.1whey2health.com (1329 words)

	Glutathione : by Ray Sahelian, M.D., health benefits of Glutathione
		Glutathione, taken as a supplement, may not be able to cross across the cell membrane and thus may not be effective.
		Although experimental studies have demonstrated that reduced glutathione (glutathione) is involved in cellular protection from deleterious effects of oxygen free radicals in ischaemia and reperfusion, there are controversial data on the correlation between levels of glutathione and the ischaemic process.
		The secretion of a peptide called glutathione by lung cells is impaired in cystic fibrosis, and there is good evidence to suggest that the lack of glutathione in lung fluid plays a key role in the chronic inflammation and infection that occurs.
	www.raysahelian.com /glutathione.html (2534 words)

	Peroxidase - Wikipedia, the free encyclopedia
		Cytochrome c peroxidase is used as a soluble, easily purified model for cytochrome c oxidase.
		Glutathione peroxidase is a peroxidase found in humans, which contains selenocysteine.
		It uses glutathione as an electron donor and is active with both hydrogen peroxide and organic hydroperoxide substrates.
	en.wikipedia.org /wiki/Peroxidase (206 words)

	Natural Products Marketplace - Glutathione and Glutathione Peroxidase
		Glutathione and glutathione peroxidase are two such compounds that protect cells from the degenerative effects of free radicals that may lead to a variety of diseases such as cancer, arteriosclerosis, arthritis, and even early aging.
		Glutathione is a simple compound composed of three amino acids: cysteine, a sulfur containing molecule; glyceine; and glutamic acid, which is derived from glutamine.
		Glutathione is found in virtually all plants and animals; in humans, the liver contains high concentrations of glutathione.
	www.naturalproductsmarketplace.com /articles/911Antio.html (647 words)

	Glutathione peroxidase - Wikipedia, the free encyclopedia
		Glutathione peroxidase (PDB 1GP1, EC 1.11.1.9) is an enzyme with peroxidase activity found in the erythrocytes of mammals that helps prevent lipid peroxidation of the cell membrane.
		The function of glutathione peroxidase, therefore, is to reduce lipid hydroperoxides to their corresponding alcohols and to reduce free hydrogen peroxide to water.
		Glutathione peroxidase is a selenium-containing tetrameric glycoprotein, that is, a molecule with four selenocysteine amino acid residues.
	en.wikipedia.org /wiki/Glutathione_peroxidase (179 words)

	InterPro: IPR000889 Glutathione peroxidase (Site not responding. Last check: 2007-10-18)
		Glutathione peroxidase (GSHPx), an enzyme whose principal function is to protect against damage from endogenously-formed hydroxyperoxides, catalyses the reduction of hydroxyperoxides by glutathione [ 1, 2 ].
		The Escherichia coli protein btuE, a periplasmic protein involved in vitamin B12 transport, is evolutionarily related to GSHPxs, although the significance of this relationship is unclear.
		Cookson E. Blaxter M.L. Selkirk M.E. Identification of the major soluble cuticular glycoprotein of lymphatic filarial nematode parasites (gp29) as a secretory homolog of glutathione peroxidase.
	www.ebi.ac.uk /interpro/IEntry?ac=IPR000889 (3119 words)

	Glutathione Prostate Cancer and PCBs
		The decrease in glutathione peroxidase was probably the major reason for the increase of lipid oxidation in PCB-poisoned rats.
		The alteration in hepatic glutathione peroxidase (GPx) produced by polychlorinated biphenyls (PCBs) was studied in vivo in aryl hydrocarbon (Ah)-responsive C57BL and -less-responsive DBA strains of mice.
		The glutathione S-transferase responsible for the metabolism of dichloromethane is expressed to significantly greater extents in mouse tissues than in rat, hamster or human tissues.
	www.foxriverwatch.com /prostate_glutathione.html (5509 words)

	Glutathione
		Numerous cellular antioxidant systems exist to defend against oxidant stress; glutathione and the enzymes superoxide dismutase and glutathione peroxidase are critical for maintaining the redox balance of the cell.
		Glutathione administration may be useful in patients with coronary artery disease, both as a result of improvement of endothelial dysfunction and augmentation of nitroglycerin-induced vasodilation and antiplatelet activity.
		Glutathione (GSH) has a central role within the finely tuned network of antioxidant systems that can respond to the oxidative insult through its functions in peroxide scavenging via glutathione-S-transferase and the family of glutathione peroxidases, regeneration of alpha-tocopherol, and inhibition of NFkB which is required for the expression of pro-inflammatory genes.
	www.valueseek.com /health/heart.html (3473 words)

	Glutathione - Vitacost (Site not responding. Last check: 2007-10-18)
		Glutathione is a small protein composed of three amino acids: cysteine, glutamic acid, and glycine.
		Glutathione is involved in detoxification—it binds to toxins, such as heavy metals, solvents, and pesticides, and transforms them into a form that can be excreted in urine or bile.
		Dietary glutathione is found in fresh and frozen fruits and vegetables, fish, and meat.
	www.vitacost.com /science/hn/Supp/Glutathione.htm (1494 words)

	Plasma Glutathione Peroxidase
		Glutathione peroxidases are selenoenzymes which catalyze the reduction of hydroperoxides in the presence of glutathione.
		Glutathione peroxidases catalyse the reduction of hydroperoxides in the presence of glutathione.
		In addition to the gluathione peroxidase in erythrocytes, humans express a plasma-specific glutathione peroxidase (pl-GPx).
	www.oxfordbiomed.com /glu16fr.html (96 words)

	Glutathione, GSH and Whey Protein. Information for Physicians
		Glutathione participates directly in the neutralization of free radicals, reactive oxygen compounds, and maintains exogenous antioxidants such as vitamins C and E in their reduced (active) forms.
		Glutathione is a tightly regulated intracellular constituent and is limited in its production by negative feedback inhibition of its own synthesis through the enzyme gamma-glutamylcysteine synthetase, thus greatly minimizing any possibility of overdosage.
		Researchers found that 3 grams of glutathione taken orally were ineffective in increasing circulating glutathione (glutathione in the bloodstream) in a clinical study evaluating the benefits of oral glutathione.
	www.nutritionadvisor.com /glutathione.html (3206 words)

	Asthma, Selenium and Glutathione Peroxidase - A Connection?
		Glutathione peroxidase is especially important in reducing the production of inflammatory prostaglandins and leukotrienes.
		Vitamin C, Glutathione, NAC and B2 Glutathione (GSH) levels in blood plasma have been shown to be increased through supplementation with vitamin C and glutathione precursor, N-acetylcysteine (NAC).
		Glutathione levels remained elevated, the hematocrit increased form a baseline of 25.4% to 32.6%, and the number of immature red blood cells decreased from 11% to 4%.
	www.asthmaworld.org /SeGluPer.htm (1162 words)

	Contribution of Glutathione Peroxidase to the Virulence of Streptococcus pyogenes -- Brenot et al. 72 (1): 408 -- ... (Site not responding. Last check: 2007-10-18)
		Contribution of Glutathione Peroxidase to the Virulence of Streptococcus pyogenes -- Brenot et al.
		Contribution of Glutathione Peroxidase to the Virulence of Streptococcus pyogenes
		Missall, T. A., Cherry-Harris, J. F., Lodge, J. Two glutathione peroxidases in the fungal pathogen Cryptococcus neoformans are expressed in the presence of specific substrates.
	iai.asm.org /cgi/content/abstract/72/1/408 (381 words)

	[Full text] Seminal malondialdehyde concentration but not glutathione peroxidase activity is negatively correlated with ...
		Glutathione could inhibit the lipid peroxidation of the cell membrane [10].
		JA The majority of human glutathione peroxidase type 5 (GPX5) transcripts are incorrectly spliced: implications for the role of GPX5 in the male reproductive tract.
		Phospholipid hydroperoxide glutathione peroxidase (PHGPx) in rat testis nuclei is bound to chromatin.
	www.biolsci.org /v02p0023.htm (3392 words)

	Extracellular glutathione peroxidase induction in asthmatic lungs: evidence for redox regulation of expression in human ...
		Extracellular glutathione peroxidase induction in asthmatic lungs: evidence for redox regulation of expression in human airway epithelial cells -- COMHAIR et al.
		Extracellular glutathione peroxidase induction in asthmatic lungs: evidence for redox regulation of expression in human airway epithelial cells
		Glutathione is an abundant antioxidant in the intracellular
	www.fasebj.org /cgi/content/full/15/1/70 (5926 words)

	Glutathione Peroxidase Activity and Vitamin E Concentrations in Bearded Dragons, Pogona vitticeps
		The purposes of this study were 1) to measure plasma vitamin E concentrations and erythrocyte glutathione peroxidase activity in bearded dragons eating different diets, and 2) to determine whether the paresis syndrome recognized in these animals is caused by vitamin E or selenium deficiency.
		Plasma alpha-tocopherol concentrations and erythrocyte glutathione peroxidase activity were measured in 34 healthy and one clinically affected captive bearded dragons.
		Although baseline data for establishing references ranges for vitamin E and glutathione peroxidase activity in this species were obtained, the pathogenesis of paresis/ataxia could not be determined.
	www.arav.org /Journals/JA015420.htm (443 words)

	Extracellular glutathione peroxidase is secreted basolaterally by human renal proximal tubule cells -- Whitin et al. ...
		Partial sequence of human plasma glutathione peroxidase and immunologic identification of milk glutathione peroxidase as the plasma enzyme.
		Expression of plasma glutathione peroxidase in human liver in addition to kidney, heart, lung, and breast in humans and rodents.
		Selenium-dependent glutathione peroxidase-GI is a major glutathione peroxidase activity in the mucosal epithelium of rodent intestine.
	ajprenal.physiology.org /cgi/content/full/283/1/F20 (5431 words)

	Nonsense-mediated Decay of mRNA for the Selenoprotein Phospholipid Hydroperoxide Glutathione Peroxidase Is Detectable ...
		Ho, U.S., Howard, A.J., and Crapo, J.D. Nucleotide sequence of a rat glutathione peroxidase cDNA.
		Lei, X.G., Evenson, J.K., Thompson, K.M., and Sunde, R.A. Glutathione peroxidase and phospholipid hydroperoxide glutathione peroxidase are differentially regulated in rats by dietary selenium.
		Roveri, A., Casasco, A., Maiorino, A., Dalan, M.P., Calligaro, A., and Ursini, F. Phospholipid hydroperoxide glutathione peroxidase of rat testis.
	www.molbiolcell.org /cgi/content/full/12/4/1009 (6165 words)

	Selenium Deficiency Reduces the Abundance of mRNA for Se-Dependent Glutathione Peroxidase 1 by a UGA-Dependent ...
		to the oxidation of NADPH with glutathione reductase (36).
		Glutathione peroxidase and phospholipid hydroperoxide glutathione peroxidase are differentially regulated in rats by dietary selenium.
		Expression of glutathione peroxidase 1 gene in selenium-deficient rats.
	mcb.asm.org /cgi/content/full/18/5/2932 (6885 words)

	Human protein: O75715 - Epididymal secretory glutathione peroxidase precursor (EC ) (Epididymis-specific glutathione ...
		Glutathione peroxidase (GPX)/glutathione reductase is part of the hydrogen peroxide scavenging system found within the epididymis in the mammalian male reproductive tract.
		This GPX5 transcript is incapable of encoding an active glutathione peroxidase.
		The majority of human glutathione peroxidase type 5 (GPX5) transcripts are incorrectly spliced: implications for the role of GPX5 in the male reproductive tract.
	harvester.embl.de /harvester/O757/O75715.htm (961 words)

	Glutathione Peroxidase antibody (ab8850) datasheet (Site not responding. Last check: 2007-10-18)
		Glutathione Peroxidase is a 92kDa protein consisting of four identical 23kDa subunits.
		Several glutathione peroxidase enzymes have been identified that protect cell surfaces, extracellular fluid components and enzymes from oxidative stress by catalysing the reduction of hydrogen peroxide, lipid peroxides and organic hydroperoxide using reduced glutathione.
		Antiserum is prepared by immunisation of sheep with human Glutathione Peroxidase and adsorbed tomonospecificity, as determined by gel diffusion, by use of solid-phase adsorbents.
	www.abcam.com /?datasheet=8850 (319 words)

	Substrate Specificity, Localization, and Essential Role of the Glutathione Peroxidase-type Tryparedoxin Peroxidases in ...
		enzyme is a trypanothione/tryparedoxin peroxidase as are the
		brucei and 7, 15, 28, and 56 ng of tag-free recombinant peroxidase III.
		The peroxidases were detected by the polyclonal rabbit antiserum against Px III (1:1000).
	www.jbc.org /cgi/content/full/280/15/14385 (5289 words)

	Selenium-dependent cellular glutathione peroxidase protects mice against a pro-oxidant-induced oxidation of NADPH, ...
		Shen, Q., Chu, F.-F., Newburger, P. (1993) Sequences in the 3'-untranslated region of the human cellular glutathione peroxidase gene are necessary and sufficient for selenocysteine incorporation at the UGA codon.
		Garberg, P., Thullberg, M. (1996) Decreased glutathione peroxidase activity in mice in response to nafenopin is caused by changes in selenium metabolism.
		Kelner, M. J., Bagnell, R. (1990) Alteration of endogenous glutathione peroxidase, manganese superoxide dismutase, and glutathione transferase activity in cells transfected with a copper-zinc superoxide dismutase expression vector.
	www.fasebj.org /cgi/content/full/13/11/1467 (4786 words)

	Association of Glutathione Peroxidase Activity with Insulin Resistance and Dietary Fat Intake during Normal Pregnancy ...
		Association of Glutathione Peroxidase Activity with Insulin Resistance and Dietary Fat Intake during Normal Pregnancy -- Chen et al.
		Glutathione peroxidase (GPx) is one of the most important antioxidant
		glutathione peroxidase; GSH, oxidation of glutathione; Hb, hemoglobin;
	jcem.endojournals.org /cgi/content/abstract/88/12/5963 (452 words)

	Cellular Glutathione Peroxidase Protects Mice Against Lethal Oxidative Stress Induced by Various Doses of Diquat -- Fu ...
		Cellular glutathione peroxidase is the mediator of the body selenium to protect against paraquat lethality in transgenic mice.
		Glutathione peroxidase activity in rat lens and other tissues in relation to dietary selenium intake.
		Garberg P, Thullberg M. Decreased glutathione peroxidase activity in mice in response to nafenopin is caused by changes in selenium metabolism.
	www.ebmonline.org /cgi/content/full/222/2/164 (3159 words)

	Glutathione Peroxidase-Catalase Cooperativity Is Required for Resistance to Hydrogen Peroxide by Mature Rat ...
		Glutathione Peroxidase-Catalase Cooperativity Is Required for Resistance to Hydrogen Peroxide by Mature Rat Oligodendrocytes -- Baud et al.
		Claiborne A, Fridovich I (1979) Purification of the o-dianisidine peroxidase from Escherichia coli B: physicochemical characterization and analysis of its dual catalatic and peroxidatic activities.
		Dringen R, Hamprecht B (1997) Involvement of glutathione peroxidase and catalase in the disposal of exogenous hydrogen peroxide by cultured astroglial cells.
	www.jneurosci.org /cgi/content/full/24/7/1531 (6225 words)

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