The mechanism by which superoxide anion is generated by the interaction of phenylhydrazine with either oxy- or methemoglobin was investigated. Rather than superoxide anion generation resulting from an accelerated autooxidation of oxyhemoglobin, it was found that both oxy- and methemoglobin function as peroxidases toward phenylhydrazine with the resultant oxidation of this compound to phenyldiaz...

The processes leading to red cell destruction in oxidant-induced hemolytic disease are not yet fully known. Oxidant damage to hemoglobin per se may be insufficient to explain the process, and the involvement of membrane damage has been suggested. We now report that at least one crucial membrane function-exclusion of calcium-is disrupted by the potent oxidant phenylhydrazine. Phenylhydrazine, bo...

Cefoxitin interferes with determination of urinary 17-hydroxycorticosteroids. The apparent concentration of hormone is increased from three- to 10-fold in samples from patients receiving cefoxitin when the Amberlite XAD-2 "Clini-Skreen" column is used. To determine the mechanism of interference, we reacted aqueous solutions of cefoxitin, cortisol, cortisone, and 11-deoxycortisol with phenylhydr...

Phenylhydrazine (PHZ) and its derivatives were first given a medical application at the end of the 19th century but with very little benefit. However, this compound seems to be very useful in models studying mechanisms of haemolytic anaemia. Phenylhydrazine induces a reactive oxygen species formation, peroxidation of lipids and oxidative degradation of spectrin in the membrane skeleton. PHZ-ind...

Introduction: Phenylhydrazine has been used in many studies to evaluate its modulatory effects various biochemical parameters whole blood and red cell lysate. Jatropha tanjorensis Euphorbiaceae have high antioxidants properties; leaves phytochemical analysis shows the presence of flavonoids, tanins, terpenoids, saponis. This study investigated ameliorative on phenylhydrazine induced haematologi...

Phenylhydrazine interacted with oxidized and reduced cytochrome P-450 of rat liver microsomes to produce binding difference spectra typical of many nitrogenous compounds. The phenylhydrazine-induced difference spectrum observed with oxidized microsomal cytochrome P-450 was converted, in a time-dependent process, t o yield a new spectral intermediate with an absorbance maximum around 480 nm. ...

Production of red blood cells involves growth-factor mediated regulation of erythroid progenitor apoptosis and self-renewal. During severe anemia, characterized by a strong fall of the hematocrit followed by a recovery phase, these controls allow a fast recovery of the hematocrit and survival of the organism. Using a mathematical model of stress erythropoiesis and an ad hoc numerical method, we...

Background and Objective: This study was aimed the possibility of using garlic(extract nanoparticles) in alleviating bone marrow function antioxidant status anemic male rats induced by phenylhydrazine(PHZ). Materials methods: The CNP-G prepared according to [1]. Anemia phenylhydrazine intraperitoneal (20 mg/kg) for 2 consecutive days. A total 60 adult albino were used present study, at age mont...