Protein Information

Name xanthine oxidase
Synonyms XDH; XDHA; XO; XOD; XOR; Xanthene dehydrogenase; Xanthine dehydrogenase; Xanthine dehydrogenase/oxidase…

Compound Information

Name ferrous sulfate
CAS sulfuric acid iron(2+) salt (1:1)

Reference List

PubMed Abstract RScore(About this table)
3111274 Hiraishi H, Terano A, Ota S, Ivey KJ, Sugimoto T: Oxygen metabolite-induced cytotoxicity to cultured rat gastric mucosal cells. Am J Physiol. 1987 Jul;253(1 Pt 1):G40-8.


Oxygen-reactive metabolites were generated by 1 mM xanthine and 10-100 mU/ml xanthine oxidase.
3(0,0,0,3) Details
11520911 Ravati A, Ahlemeyer B, Becker A, Klumpp S, Krieglstein J: Preconditioning-induced neuroprotection is mediated by reactive oxygen species and activation of the transcription factor nuclear factor-kappaB. J Neurochem. 2001 Aug;78(4):909-19.


Preconditioning was performed by incubating mixed cultures of neurons and astrocytes from neonatal rat hippocampus with xanthine/xanthine oxidase or FeSO4 for 15 min followed by 24 h of recovery which protected the neurons against subsequent staurosporine-induced (200 nM, 24 h) apoptosis.
3(0,0,0,3) Details
14741688 Dombrecht EJ, Cos P, Vanden Berghe D, Van Offel JF, Schuerwegh AJ, Bridts CH, Stevens WJ, De Clerck LS: Selective in vitro antioxidant properties of bisphosphonates. Biochem Biophys Res Commun. 2004 Feb 13;314(3):675-80.


Bisphosphonates were tested for their xanthine oxidase and microsomal lipid peroxidation inhibiting capacity.
2(0,0,0,2) Details
2553987 Kaneko M, Lee SL, Wolf CM, Dhalla NS: Reduction of calcium channel antagonist binding sites by oxygen free radicals in rat heart. J Mol Cell Cardiol. 1989 Sep;21(9):935-43.


Isolated heart membranes were incubated with xanthine + xanthine oxidase (a superoxide anion radicals generating system), hydrogen peroxide (an activated species of oxygen), or hydrogen peroxide + Fe2+ (a hydroxyl radicals generating system).
2(0,0,0,2) Details
10915642 Rao RK, Li L, Baker RD, Baker SS, Gupta A: Glutathione oxidation and PTPase inhibition by hydrogen peroxide in Caco-2 cell monolayer. Am J Physiol Gastrointest Liver Physiol. 2000 Aug;279(2):G332-40.

Treatment with a H (2) O (2) generating system (xanthine oxidase + xanthine) or H (2) O (2) (20 microM) increased the paracellular permeability.
H (2) O (2)-induced permeability was prevented by ferrous sulfate and potentiated by deferoxamine and 1,10-phenanthroline.
2(0,0,0,2) Details
9350336 Chen CS, Chao HT, Pan RL, Wei YH: Hydroxyl radical-induced decline in motility and increase in lipid peroxidation and DNA modification in human sperm. Biochem Mol Biol Int. 1997 Oct;43(2):291-303.


We employed the xanthine-xanthine oxidase system to produce H2O2 or simply used commercially available H2O2 solution to investigate the effects of exogenous hydroxyl radicals on the motility characteristics and on lipid peroxidation and DNA modification of human sperm.
1(0,0,0,1) Details
15804172 Jubeh TT, Antler S, Haupt S, Barenholz Y, Rubinstein A: Local prevention of oxidative stress in the intestinal epithelium of the rat by adhesive liposomes of superoxide dismutase and tempamine. Mol Pharm. 2005 Jan-Feb;2(1):2-11.

Reactive hydroxyl radicals were generated in situ in a closed circulating intestinal loop of the rat from the reaction between hypoxanthine and xanthine oxidase in the presence of chelated ferrous sulfate.
81(1,1,1,1) Details
8308714 Rubinstein A, Kakunda A, Kohen R: Protection of the rat jejunal mucosa against oxidative injury by cationized superoxide dismutase. J Pharm Sci. 1993 Dec;82(12):1285-7.

Mucosal damage was induced in a closed circulating intestinal loop of the rat either by a mixture of xanthine and xanthine oxidase or by a mixture of xanthine, xanthine oxidase, and chelated ferrous sulfate.
81(1,1,1,1) Details
6408899 Kontos HA, Hess ML: Oxygen radicals and vascular damage. Adv Exp Med Biol. 1983;161:365-75.

Xanthine oxidase plus xanthine, which produced superoxide anion radical, hydrogen peroxide, and hydrogen peroxide plus ferrous sulfate, which produced the free hydroxyl radical, induced sustained dilation, reduced responsiveness to the vasoconstrictor effect of hypocapnia, and destructive lesions of the endothelium and of the vascular smooth muscle.
31(0,1,1,1) Details
15591360 Potineni RV, Peterson DG: Influence of thermal processing conditions on flavor stability in fluid milk: benzaldehyde. J Dairy Sci. 2005 Jan;88(1):1-6.

Additionally, PAH and UHT milk samples containing benzaldehyde (with and without ferrous sulfate) were spiked with xanthine oxidase.
8(0,0,1,3) Details
12842456 Chan EL, Murphy JT: Reactive oxygen species mediate endotoxin-induced human dermal endothelial NF-kappaB activation. J Surg Res. 2003 May 1;111(1):120-6.

HMEC.1 cultures were treated individually with LPS, hydrogen peroxide, or xanthine, xanthine oxidase, and ferrous sulfate (xanthine/XO/Fe (2+)).
6(0,0,1,1) Details
14871580 Je JY, Park PJ, Kim SK: Free radical scavenging properties of hetero-chitooligosaccharides using an ESR spectroscopy. Food Chem Toxicol. 2004 Mar;42(3):381-7.

Superoxide, hydroxyl and carbon-centered radicals were generated from hypoxanthine-xanthine oxidase reaction, hydrogen peroxide-ferrous sulfate (Fenton reaction) and azo compound 2,2-azobis-(2-amidinopropane)-hydrochloride (AAPH), respectively.
6(0,0,1,1) Details
3918462 Wei EP, Christman CW, Kontos HA, Povlishock JT: Effects of oxygen radicals on cerebral arterioles. Am J Physiol. 1985 Feb;248(2 Pt 2):H157-62.

Xanthine oxidase and xanthine, a combination that produces hydrogen peroxide and superoxide anion radical, applied topically in anesthetized cats equipped with cranial windows caused arteriolar dilation during application, sustained dilation 1 h after washout, and reduced reactivity to the vasoconstrictive effects of arterial hypocapnia, discrete lesions of the endothelium, and morphological abnormalities of the vascular smooth muscle by electron microscopy.
Similar effects were seen in small, but not in large, arterioles during topical application of hydrogen peroxide or hydrogen peroxide plus ferrous sulfate, a combination that produces free hydroxyl radical.
3(0,0,0,3) Details
17331021 Inoue OJ, Freeman DE, Wallig MA, Clarkson RB: In vitro effects of reactive oxygen metabolites, with and without flunixin meglumine, on equine colonic mucosa. Am J Vet Res. 2007 Mar;68(3):305-12.

Incubation conditions included control (no addition) and ROM systems, including addition of 1 mM xanthine and 80 mU of xanthine oxidase (to produce the superoxide radical), 1 mM H (2) O (2), and 1 mM H (2) O (2) and 0.5 mM ferrous sulfate (to produce the hydroxyl radical).
6(0,0,1,1) Details
7564416 Lin JM, Lin CC, Chen MF, Ujiie T, Takada A: Scavenging effects of Mallotus repandus on active oxygen species. J Ethnopharmacol. 1995 Jun;46(3):175-81.

Superoxide radical (O2.-) and hydroxyl radical (OH.) were supplied enzymatically from hypoxanthine-xanthine oxidase (HPX-XOD) reaction and hydrogen peroxide-ferrous sulfate (Fenton reaction), respectively, to the assay system.
6(0,0,1,1) Details
12517328 Vaughan JE, Walsh SW: Oxidative stress reproduces placental abnormalities of preeclampsia. . Hypertens Pregnancy. 2002;21(3):205-23.

METHODS: We tested this possibility in vitro by exposing a trophoblast-like cell line, ED27, to a combination of linoleic acid (LA, 90 microM) and an oxidizing solution composed of hypoxanthine, xanthine oxidase and ferrous sulfate (OxLA) for 6 days.
6(0,0,1,1) Details
7494543 Shao Q, Matsubara T, Bhatt SK, Dhalla NS: Inhibition of cardiac sarcolemma Na (+)-K+ ATPase by oxyradical generating systems. Mol Cell Biochem. 1995 Jun 7-21;147(1-2):139-44.


The Na (+)-K+ ATPase activity and SH group content were decreased whereas malondialdehyde (MDA) content was increased upon treating the porcine cardiac sarcolemma with xanthine plus xanthine oxidase, which is known to generate superoxide and other oxyradicals.
4(0,0,0,4) Details
8424675 Giannessi M, Del Corso A, Cappiello M, Voltarelli M, Marini I, Barsacchi D, Garland D, Camici M, Mura U: Thiol-dependent metal-catalyzed oxidation of bovine lens aldose reductase. Arch Biochem Biophys. 1993 Jan;300(1):423-9.


The net maximal increase in the enzyme activity was observed with 3 mM 2-mercaptoethanol, 0.3 mM FeSO4, and 0.9 mM EDTA, either with or without 1 mM hypoxanthine and 37 mU/ml of xanthine oxidase.
1(0,0,0,1) Details
9396461 Li PF, Dietz R, von Harsdorf R: Differential effect of hydrogen peroxide and superoxide anion on apoptosis and proliferation of vascular smooth muscle cells. Circulation. 1997 Nov 18;96(10):3602-9.


METHODS AND RESULTS: Cultured rat VSMCs were exposed to xanthine oxidase/xanthine (XO/X) or H2O2-Fe (II).
1(0,0,0,1) Details
11105916 Baumber J, Ball BA, Gravance CG, Medina V, Davies-Morel MC: The effect of reactive oxygen species on equine sperm motility, viability, acrosomal integrity, mitochondrial membrane potential, and membrane lipid peroxidation. J Androl. 2000 Nov-Dec;21(6):895-902.

In order to promote lipid peroxidation, samples were incubated with ferrous sulfate (0.64 mM) and sodium ascorbate (20 mM) for 2 hours after the X-XO incubation.
The objective of this study was to examine the influence of reactive oxygen species (ROS), generated through the use of the xanthine (X)-xanthine oxidase (XO) system, on equine sperm motility, viability, acrosomal integrity, mitochondrial membrane potential, and membrane lipid peroxidation.
1(0,0,0,1) Details
12210849 Tai KK, Truong DD: Activation of adenosine triphosphate-sensitive potassium channels confers protection against rotenone-induced cell death: therapeutic implications for Parkinson's disease. J Neurosci Res. 2002 Aug 15;69(4):559-66.


Pretreatment of PC12 cells with preconditioning stimuli FeSO (4) or xanthine/xanthine oxidase also confers protection against rotenone-induced cell death.
1(0,0,0,1) Details
11737181 Gunaydin B, Demiryurek AT: Interaction of lidocaine with reactive oxygen and nitrogen species. Eur J Anaesthesiol. 2001 Dec;18(12):816-22.


In cell-free experiments, lidocaine (1 mM) markedly inhibited chemiluminescence of xanthine-xanthine oxidase (24 +/- 3%), while it slightly suppressed hypochlorous acid-induced chemiluminescence (9 +/- 2%).
1(0,0,0,1) Details
2516241 Srivastava SK, Ansari NH, Liu S, Izban A, Das B, Szabo G, Bhatnagar A: The effect of oxidants on biomembranes and cellular metabolism. . Mol Cell Biochem. 1989 Nov 23-Dec 19;91(1-2):149-57.

Increased Ca2+ may affect proteases and may help in the conversion of xanthine dehydrogenase to xanthine oxidase, consequently increased production of super oxide radicals.
By using patch-clamp technique in isolated frog myocytes, we have shown that hydroxy radicals generated by ferrous sulfate and ascorbate as well as lipid peroxides such as t-butyl hydroperoxide facilitate the entry of Na+ by oxidizing Na+-channels.
1(0,0,0,1) Details
9051661 O'Regan MH, Song D, VanderHeide SJ, Phillis JW: Free radicals and the ischemia-evoked extracellular accumulation of amino acids in rat cerebral cortex. Neurochem Res. 1997 Mar;22(3):273-80.

Xanthine oxidase plus xanthine significantly enhanced GABA levels 358 fold over controls during 20 min of four vessel occlusion.
Administration of H2O2 plus ferrous sulfate significantly elevated both pre-ischemic amino acid release and ischemia-evoked release.
1(0,0,0,1) Details
3025753 Nagase S, Aoyagi K, Narita M, Tojo S: Active oxygen in methylguanidine synthesis. . Nephron. 1986;44(4):299-303.


MG synthesis is moderately stimulated by the superoxide radical derived from 3 mM hypoxanthine and 0.015 units/ml xanthine oxidase and inhibited by the addition of superoxide dismutase.
1(0,0,0,1) Details
2827582 Vile GF, Winterbourn CC, Sutton HC: Radical-driven Fenton reactions: studies with paraquat, adriamycin, and anthraquinone 6-sulfonate and citrate, ATP, ADP, and pyrophosphate iron chelates. Arch Biochem Biophys. 1987 Dec;259(2):616-26.


Radicals were generated either radiolytically or enzymatically with xanthine oxidase or ferredoxin reductase.
1(0,0,0,1) Details