Hemolysis and lodination of Erythrocyte Components by a Myeloperoxidase - mediated System

نویسنده

  • Robert A. Clark
چکیده

Erythrocytes are hemolyzed by myeloperand triiodothyronine-dependent, but not oxidase, an H203-generating system (gluin the chloride-dependent, systems. Hemocose + glucose oxidase; hypoxanthine + lysis is inhibited by the peroxidase inxanthine oxidase) and an oxidizable cohibitors, azide and cyanide, and by catafactor (chloride, iodide, thyroxine, tnlase and is stimulated by superoxide iodothyronine) . The combined effect of dismutase when the xanthine oxidase syschloride and either iodide or the thyroid tern is employed as the source of H202. hormones is greater than additive. MyeHemolysis by the iodide-dependent sysloperoxidase can be replaced by lactotern is associated with the iodination of peroxidase in the iodide-, thyroxineerythrocyte components.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Hemolysis and iodination of erythrocyte components by a myeloperoxidase-mediated system.

Erythrocytes are hemolyzed by myeloperoxidase, an H2O2-generating system (glucose + glucose oxidase; hypoxanthine + xanthine oxidase) and an oxidizable cofactor (chloride, iodide, thyroxine, triiodothyronine). The combined effect of chloride and either iodide or the thyroid hormones is greater than additive. Myeloperoxidase can be replaced by lactoperoxidase in the iodide-, thyroxine and triiod...

متن کامل

Protective Effect of Rosmarinus officinalis L. Essential Oil against Free Radical-Induced Erythrocyte Lysis

       The oxidative hemolysis of rat erythrocytes induced by 2,2’-azobis–(2-amidinopropane) (AAPH) and its inhibition by rosemary essential oil was studied. Different concentrations (0.178, 0.357, 0.534 and 0.712 ml/ml) of the essential oil showed no significant hemolysis compared to phosphate buffer solution. AAPH (25 mM and 50 mM) induced hemolysis in a time-dependent manner. Diff e r e n t ...

متن کامل

Antioxidant Effects of Vitamins C and E on the Low-Density Lipoprotein Oxidation Mediated by Myeloperoxidase

Background: Oxidative modification of low-density lipoprotein (LDL) appears to be an early step in the pathogenesis of atherosclerosis. Meanwhile, myeloperoxidase (MPO)-catalyzed reaction is one of the potent pathway for LDL oxidation in vivo. The aim of this study was to evaluate in vitro antioxidant effects of vitamins C and E on LDL oxidation mediated by MPO. Methods: MPO was isolated from f...

متن کامل

The Alterations of Plasma Iipid Peroxidation and erythrocyte Superoxide Dismutase and Glutathione Peroxidase Enzyme Activities During Storage of Blood

Abstract Background and objective: Exposure of red blood cells to oxygen radicals can induce Lipid proxidation, hemoglobin damage and hemolysis of erythrocyte .The present study was designed to determine the alteration of plasma lipid peroxidation and erythrocyte Superoxide Dismutase and Glutathione Peroxidase enzyme activities in stored blood and to find out the quantitative alterations and th...

متن کامل

Ameliorative properties of aqueous extract of Ficus thonningii on erythrocyte osmotic fragility induced by acetaminophen in Rattus norvegicus

In vitro antioxidant and erythrocyte protecting activities by aqueous extract of Ficus thonningii leaves on blood cells were studied in acetaminophen treated rats. The extract was safe at limit dose of 5000 mg kg-1body weight. The extract demonstrated dose dependent antihemolytic effect at dose levels between 50 and 200 m...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2005