Polymorphisms of glutathione S-transferase (GST) proteins are correlated with elevated risk of many cancers including hematologic malignancies. Particularly concerning acute promyelocytic leukemia (APL), the studies on association between GSTM1, GSTT1 and GSTP1 and the disease predisposition are scarce and contradictory. The aim of this study was to examine whether polymorphic variations in GST...

1. The effect of chronic enflurane or isoflurane anesthesia on hepatic heme regulation and the drug-metabolizing system in mice treated or not with phenobarbital (PB) was investigated. 2. delta-Aminolevulinic acid synthetase was induced 50-170% in all cases. Urinary porphyrin precursor excretion was also enhanced, but these values were lower when animals also received PB. 3. Cytochrome (CYT) P-...

Clinical and experimental data point to existence of disturbances of adaptive ability of aged organism to extreme impacts. However mechanisms of these disturbances are not clear yet. The purpose of the investigation was to study age-related changes in reaction of erythrocyte antioxidant enzyme system in response to acute psycho-emotional stress and a possible role of these changes in age-relate...

Pesticides such as malathion, commonly used in agriculture and households, are toxic substances that lead to reactive oxygen species generation, which harms organisms. Ecotoxicological consequences of malathion, particularly its effects on antioxidants in fish, are not well understood. Thus, we investigated the effects of malathion (0.05 mg/L) on lipid peroxidation and antioxidant systems in Ca...

BACKGROUND In the substantia nigra of Parkinson's disease (PD) patients, increased lipid peroxidation, decreased activities of the mitochondrial complex I of the respiratory chain, catalase and glutathione-peroxidase, and decreased levels of reduced glutathione have been reported. These observations suggest that oxidative stress and mitochondrial dysfunction play a role in the neurodegeneration...

A split plot 3 by 4 experiment was designed to characterize the relationship between production of gluthatione (GSH), oxidized gluthatione (GSSG), total flavonoid, anthocyanin, ascorbic acid and antioxidant activities (FRAP and DPPH) in three varieties of Labisia pumila Blume, namely the varieties alata, pumila and lanceolata, under four levels of nitrogen fertilization (0, 90, 180 and 270 kg N...

Overexpression of SGTP and/or MT may contribute to various carcinogenic processes and to resistance to anticancer treatment. The importance of these proteins, although clearly established in solid tumours, has not been fully understood in haematopoietic neoplasm. The aim of this study was to determine the expression of MT and SGTP in the bone marrow of patients with MPD. Twenty paraffin-embedde...

Cisplatin causes infertility due to ovarian toxicity. The toxicity mechanism is unknown, but evidence suggests oxidative stress. In this study, the effect of mirtazapine on cisplatin-induced infertility and oxidative stress in rats was investigated. 64 female rats were divided into 4 groups of 16. Except for the controls that received physiologic saline only, all were administered with cisplati...

The present study was designed to determine whether changes in dietary protein source are related to changes in antioxidant status determined by enzyme activities of catalase, superoxide dismutase (SOD), gluthatione peroxidase (GSH-Px) and gluthatione reductase (GSSG-Red) and lipid peroxidation levels in various tissues. Spontaneously hypertensive rats (SHR; 5 wk old) were fed diets containing ...