methemoglobinemia/glutathione

A specific substrate to Mu class glutathione S-transferase (GST), 1,2-dichloro-4-nitrobenzene (DCNB), was administered to mice with a disrupted GST Mu 1 gene (Gstm1-null mice) to investigate the in vivo role of murine Gstm1 in toxicological responses to DCNB. A single oral administration of DCNB at

Primaquine is an important antimalarial agent because of its activity against exoerythrocytic forms of Plasmodium spp. Methemoglobinemia and hemolytic anemia, however, are dose-limiting side effects of primaquine therapy. These hemotoxic effects are believed to be mediated by metabolites, although

The objective of the present study was to investigate the treatment of nitric oxide (NO)-induced methemoglobinemia by ascorbate and its consequences on red blood cell (RBC) glutathione in vitro. RBC were obtained from five healthy volunteers. The following experiments were carried out: (1) After

Examination of the red cell enzyme profile in a case of congenital methemoglobinemia has shown associated deficiencies of glutathione reductase (GR) and glutathione peroxidase (GSHPx) in addition to NADH-methemoglobin reductase deficiency. Contrary to expectations, GR and GSHPx deficiencies do not

The blood of healthy men and patients with methemoglobinemia of different genesis was incubated with chromosmon, ascorbic acid, riboflavin and glutathione, the percentage of erythrocytes with thorn-shaped protuberances-echinocytes being subsequently determined in the blood smears. The absorbtion

4-Dimethylaminophenol (DMAP) is a suitable cyanide antidote that rapidly forms ferrihemoglobin by catalytic transfer of electrons from ferrohemoglobin to oxygen. Deleterious methemoglobinemia, because of the catalytic cycling, is prevented by side reactions of oxidized DMAP with thiols, particularly

BACKGROUND In veterinary medicine, congenital methemoglobinemia associated with nicotinamide adenine dinucleotide (NADH)-cytochrome b5 reductase (b5R) deficiency is rare. It has been reported in several breeds of dogs, but little information is available about its etiology. OBJECTIVE To analyze the

OBJECTIVE To characterize the risk of methemoglobinemia and hemolytic anemia following large overdoses of zopiclone, a cyclopyrrolone hypnotic-sedative and a racemic mixture of R-zopiclone and S-zopiclone (eszopiclone). METHODS This review included all reports of zopiclone induced methemoglobinemia,

Methemoglobin formation, as well as hemoglobin or DNA adducts, are useful biomarkers of occupational exposure to certain arylamines. It has been suggested that, in liver from animals not treated with a cytochrome P450 (CYP) inducer, hepatic CYP1A2 is the major P450 involved in N-hydroxylation. This

Hereditary methemoglobinemia due to reduced nicotinamide adenine dinucleotide (NADH) cytochrome b5 reductase (b5R) deficiency is classified into two types, an erythrocyte (type I) and a generalized (type II). We investigated the b5R gene of a patient with type II from a white United Kingdom (UK)

In the present study both the biotransformation patterns and the capacity to induce methemoglobinemia of a series of fluoronitrobenzenes were investigated. This was done to investigate to what extent variation in the number and position of the halogen substituents influence the metabolic fate of the

OBJECTIVE Methemoglobinemia is a well-known side effect of nitric oxide inhalation. We tested the hypothesis whether cardiopulmonary bypass increases methemoglobin formation by nitric oxide. METHODS A two-phase study: a) a controlled, prospective in vivo study of inhaled nitric oxide treatment

In twenty five patients who presented the cutaneous form of loxoscelism, serum haptoglobin and lactic dehydrogenase, erythrocyte glucose-6-phosphate dehydrogenase, glutathione reductase, glutathione peroxidase, methemoglobin, bilirubin and reticulocytes were investigated after bite. No hemolysis was

This report describes erythrocyte biochemical findings in an adult Spanish mustang mare that exhibited persistent methemoglobinemia, eccentrocytosis, and pyknocytosis that were not related to the consumption or administration of an exogenous oxidant. The methemoglobinemia was attributed to a

Recessive congenital methemoglobinemia due to nicotinamide adenine dinucleotide (NADH)-cytochrome b5 reductase (b5R) deficiency is classified into 2 clinical types: type 1 (erythrocyte type) and type 2 (generalized type). We found a Chinese family with type 1 recessive congenital methemoglobinemia,