Protein Information

Name myeloperoxidase
Synonyms 38 kDa MYELOPEROXIDASE; MPO; Myeloperoxidase; Myeloperoxidase precursor; Peroxidase (Myeloperoxidase); Myeloperoxidases; Myeloperoxidase precursors; Peroxidase (Myeloperoxidase)s

Compound Information

Name amitrole
CAS

Reference List

PubMed Abstract RScore(About this table)
9721600 Rastogi L, Patnaik GK, Dikshit M: Free radicals and antioxidant status following pylorus ligation induced gastric mucosal injury in rats. Pharmacol Res. 1998 Aug;38(2):125-32.


MDA level, myeloperoxidase (a neutrophil maker) and catalase activity in the rat stomach homogenate were augmented 2, 4 and 19 h after pylorus ligation.
1(0,0,0,1) Details
6833495 Burger AG, Engler D, Buergi U, Weissel M, Steiger G, Ingbar SH, Rosin RE, Babior BM: Ether link cleavage is the major pathway of iodothyronine metabolism in the phagocytosing human leukocyte and also occurs in vivo in the rat. J Clin Invest. 1983 Apr;71(4):935-49.


FROM THESE FINDINGS WE CONCLUDE THE FOLLOWING: (a) ELC is the major pathway for the degradation of T (4) during leukocyte phagocytosis, and accounts for 50% of the disposal of this iodothyronine; (b) the NEI and iodide formed by phagocytosing cells are derived from the degradation of the phenolic and tyrosyl rings of T (4), although ELC per se accounts for only a small fraction of these iodinated products; (c) the process by which ELC occurs is enzymic in nature, and its occurrence requires the presence of the respiratory burst that accompanies phagocytosis; (d) the enzyme responsible for ELC is likely to be a peroxidase, although a clear role for myeloperoxidase as the candidate enzyme remains to be established; (e) iodothyronines are also degraded by ELC in vivo, and the quantitative importance of this pathway in various pathophysiological states requires further investigation.
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6301583 Lane TA, Lamkin GE: Myeloperoxidase-mediated modulation of chemotactic peptide binding to human neutrophils. Blood. 1983 Jun;61(6):1203-7.

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3015901 Thomas EL, Fishman M: Oxidation of chloride and thiocyanate by isolated leukocytes. . J Biol Chem. 1986 Jul 25;261(21):9694-702.


Stimulated neutrophils produced H2O2 and secreted myeloperoxidase.
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3010869 Miyasaki KT, Wilson ME, Cohen E, Jones PC, Genco RJ: Evidence for and partial characterization of three major and three minor chromatographic forms of human neutrophil myeloperoxidase. Arch Biochem Biophys. 1986 May 1;246(2):751-64.

2(0,0,0,2) Details
6325545 Cramer R, Soranzo MR, Dri P, Menegazzi R, Pitotti A, Zabucchi G, Patriarca P: A simple reliable assay for myeloperoxidase activity in mixed neutrophil-eosinophil cell suspensions: application to detection of myeloperoxidase deficiency. J Immunol Methods. 1984 May 11;70(1):119-25.

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3009503 Frenkel K, Blum F, Troll W: Copper ions and hydrogen peroxide form hypochlorite from NaCl thereby mimicking myeloperoxidase. J Cell Biochem. 1986;30(3):181-93.

2(0,0,0,2) Details
2154520 Bozeman PM, Learn DB, Thomas EL: Assay of the human leukocyte enzymes myeloperoxidase and eosinophil peroxidase. J Immunol Methods. 1990 Jan 24;126(1):125-33.

2(0,0,0,2) Details
3008887 Dallegri F, Patrone F, Ballestrero A, Frumento G, Sacchetti C: Inhibition of neutrophil cytolysin production by target cells. Blood. 1986 May;67(5):1265-72.


The lysis was inhibited by azide, catalase, chloride-free medium and amino acids, suggesting the requirement for myeloperoxidase (MPO), hydrogen peroxide (H2O2), chloride ions (Cl-), and hypochlorous acid (HOC1), respectively.
1(0,0,0,1) Details
6282623 Pember SO, Fuhrer-Krusi SM, Barnes KC, Kinkade JM Jr: Isolation of three native forms of myeloperoxidase from human polymorphonuclear leukocytes. FEBS Lett. 1982 Apr 5;140(1):103-8.

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232823 Cramer R, Bisiacchi B, de Nicola G, Patriarca P: A comparative study of the biochemical properties of myeloperoxidase and eosinophil peroxidase. Adv Exp Med Biol. 1979;121(A):91-9.

1(0,0,0,1) Details
2176263 Duval DL, Howard D, McCalden TA, Billings RE: The determination of myeloperoxidase activity in liver. . Life Sci. 1990;47(24):PL145-50.

1(0,0,0,1) Details
12421972 Clark SR, Coffey MJ, Maclean RM, Collins PW, Lewis MJ, Cross AR, O'Donnell VB: Characterization of nitric oxide consumption pathways by normal, chronic granulomatous disease and myeloperoxidase-deficient human neutrophils. J Immunol. 2002 Nov 15;169(10):5889-96.

1(0,0,0,1) Details
2824562 Winterbourn CC, Stern A: Human red cells scavenge extracellular hydrogen peroxide and inhibit formation of hypochlorous acid and hydroxyl radical. J Clin Invest. 1987 Nov;80(5):1486-91.


Red cells efficiently inhibited deoxyribose oxidation by hydroxyl radicals generated from H2O2, O2- and Fe (EDTA), and myeloperoxidase-dependent oxidation of methionine to methionine sulfoxide by stimulated neutrophils.
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6094369 Muller-Peddinghaus R: In vitro determination of phagocyte activity by luminol- and lucigenin-amplified chemiluminescence. Int J Immunopharmacol. 1984;6(5):455-66.


The dependence of luminol-amplified CL upon the generation of the chain reaction intermediate H2O2 and its three main catalysts catalase, myeloperoxidase and glutathione makes this reaction prone to different artifacts if cell activity is to be determined.
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6428753 Cardoni RL, Rimoldi MT, de Bracco MM: Antibody-dependent cytotoxicity of human and mouse mononuclear cells against Trypanosoma cruzi epimastigotes. Cell Immunol. 1984 Jul;86(2):518-24.


When human mononuclear cells were incubated with amobarbital, cyanide, azide, or aminotriazole, an inhibition of cytotoxicity against sensitized T. cruzi was observed, suggesting that oxygen reduction products and myeloperoxidase were involved in the destruction of sensitized T. cruzi epimastigotes by normal human mononuclear cells.
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20032404 Bechtel W, Bauer G: Modulation of intercellular ROS signaling of human tumor cells. . Anticancer Res. 2009 Nov;29(11):4559-70.


These supraoptimal conditions can be brought back to the optimum through excess myeloperoxidase (MPO), partial removal of hydrogen peroxide through the catalase mimetic EUK-134 or partial inhibition of NADPH oxidase.
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