The aim of this study was to evaluate the radioprotector effect of sodium selenite on the ultrastructure of submandibular glands in rats. Fifty-seven male albino Wistar rats were randomized to 4 groups: control, irradiated, sodium selenite and irradiated/sodium selenite. The anim...
Ver documentoThe radioprotective effect of sodium selenite in the secretory cells of submandibular glands of rats was assessed by ultrastructural analysis. A total of 57 rats were used, which were divided into four experimental groups: control, irradiated, sodium selenite and sodium selenite/...
Ver documentoThis study was designed to investigate the protective effects of sodium selenite and/or vitamin E against mercuric chloride-induced cardiotoxicity. Male Wistar rats (n=48, 310±10 g) were administered mercuric chloride (1.0 mg/kg bw), sodium selenite (0.25 mg/kg bw), vitamin E (10...
Ver documentoAmong heavy met als, lead is one of the common pollutants found in the environment and biological system. In the present study, streptozotocin-induced diabetic and normal non-diabetic male Wistar rats were given sodium selenite (1.0 mg/kg bw), lead nitrate (22.5 mg/kg bw) and sod...
Ver documentoWeiss, K. F. (Iowa State University, Ames), J. C. Ayres, and A. A. Kraft. Inhibitory action of selenite on Escherichia coli, Proteus vulgaris, and Salmonella thompson. J. Bacteriol. 90:857–862. 1965.—The resistance of three microorganisms, Escherichia coli (ISU-41), Proteus vulga...
Ver documentoCells of Escherichia coli will reduce sodium selenite to elemental selenium. Examination by electron microscopy of E. coli cultures grown in the presence of sodium selenite show selenium deposited on the cell membrane and cell wall but not in the cytoplasm....
Ver documentoTo establish or exclude the diagnosis of bronchial carcinoma a series of 43 patients with peripheral pulmonary opacities was studied by lung scanning after intravenous injection of 75Se-sodium selenite. A diagnosis was ultimately obtained in all patients. The incidence of both fa...
Ver documentoInvolvement of the bacterial thiopurine methyltransferase (bTPMT) in natural selenium methylation by freshwater was investigated. A freshwater environment that had no known selenium contamination but exhibited reproducible emission of dimethyl selenide (DMSe) or dimethyl diseleni...
Ver documentoThe aim of the present study was to elucidate the possible protective role of vitamin E and / or sodium selenite on mercuric chloride-induced oxidative stress and histopathological changes in the lung tissue of the rats. Adult male albino Wistar rats were exposed to mercuric chlo...
Ver documentoSelenium is both an essential and a toxic trace element, and the range of concentrations between the two is extremely narrow. Although tellurium is not essential and is only rarely found in the environment, it is considered to be extremely toxic. Several hypotheses have been prop...
Ver documentoThe variation of the phase-separation temperature (Tc) was studied in lenses during formation of cataracts induced by a subcutaneous injection of sodium selenite. In normal control animals, the Tc decreased monotonically with increasing age. Approximately 2 days after administrat...
Ver documentoThe aim of this study was to evaluate the sodium selenite effect on offspring molars of irradiated female rats. For this purpose, twenty pregnant female rats were used and divided into four experimental groups: control, selenium, irradiated and selenium-irradiated. The animals of...
Ver documentoThe aim of this study was to evaluate the Sodium Selenite as protection substance. It were made rectangular wounds (2,5 X 1,5 cm) in the dorsal region of the rats, in order to stimulate the growing of the repair process. The rats were then divided into four groups as follows: con...
Ver documentoThe aim of this study was to investigate the effects of selenium and aflatoxin on human whole blood cultures (WBC) in relation to induction of sister-chromatid exchange (SCE). Results showed that the frequency of SCEs in peripheral lymphocytes was significantly increased by the d...
Ver documentoCulture of the green alga Chlamydomonas reinhardtii in the medium containing sodium selenite caused the activity of ascorbate peroxidase to disappear and the appearance of glutathione peroxidase. The induced maximum activity of glutathione peroxidase reached 350 micromole (millig...
Ver documentoThe aim of this study was evaluate the radioprotective effect of sodium selenite on the socket healing in rats. For this purpose, one hundred male rats were divided in four experimental groups: control, selenium, irradiated and selenium irradiated. All animals were submitted to u...
Ver documentoConsidering that the ionizing radiation may cause deleterious effects on the process of tissue repair and sodium selenite is an antioxidant agent, acting against the free radicals in the organism, this study aimed at evaluating the radioprotective effect of sodium selenite on the...
Ver documentoThis study was designed to investigate the effects of selenium and aflatoxin on human whole blood cultures (WBC) in relation to induction of sister-chromatid exchange (SCE). The results showed that the frequency of SCEs in peripheral lymphocytes was significantly increased by the...
Ver documentoStimulated human phagocytes produce sister chromatid exchanges in cultured mammalian cells by a mechanism involving oxygen metabolites. Experiments were designed to determine whether antioxidants inhibit this process. Superoxide dismutase, catalase, and hydroxyl radical scavenger...
Ver documentoMice fed diets supplemented with selenium (sodium selenite) immunologically respond to the sheep red blood cell antigen by producing enhanced immunoglobulin M and immunoglobulin G antibody titers....
Ver documentoResumo O propósito deste estudo foi testar o efeito radioprotetor do selênio na microarquitetura óssea de mandíbulas de ratos irradiados. Quarenta ratos foram separados em 4 grupos com 10 animais: grupo controle (GC), grupo irradiado (GI), grupo selenito de sódio (SSG) e grupo se...
Ver documento