alexa Protective effects of selenium on fluoride induced alterations in certain enzymes in brain of mice.
Molecular Biology

Molecular Biology

Cell & Developmental Biology

Author(s): Reddy KP, Sailaja G, Krishnaiah C

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Abstract This study reports the protective effects of selenium on fluoride induced alterations in the activities of pro-oxidative (xanthine oxidase (XOD), lipid peroxidation (LPO) free radical scavenging, [catalase, superoxide dismutase (SOD), glutathione-s-transferase (GST), glutathione peroxidase (GPX), glutathione reductase (GR), glutathione) and metabolic (glucose-6-phosphate dehydrogenase, alanine amino transferase (ALAT), aspartate aminotransferase (AAT), creatine phosphokinase (CPK), acid phosphatase (AP), alkaline phosphatase (ALP)] enzymes along with fluoride and selenium levels in brain of mice. Animals were divided into control, NaF treated group (20 mg kg(-1) body wt.(-1) intraperitonial) and Selenium+NaF treated group (sodium selenite, 5 microg of selenium/0.2 ml distilled water kg(-1) body wt.(-1) day) and were maintained for 14 days on respective treatments. The decreased bodyweight (-11.35\%) as well as organosomatic index (-15.1\%) of brain in NaF group were recovered in treatment of selenium along with NaF. The increased accumulation of fluoride (32.1\%) in brain observed in NaF treated group compared to control was diminished in selenium+NaF treated group. Selenium levels (3.03\%) increased in selenium+NaF treated group in compared to decrement in NaF treatment. The SOD (-16.6\%), Catalase (-21.5\%), GST(-13.72\%), GPX (-19.16\%), GR (-44.97\%) activities and Glutathione (-23\%) content in NaF treated group were decreased significantly compared to controls, which were significantly (p < 0.01) recovered in selenium+NaF group. Increased XOD (10.85\%) and LPO (8.61\%) levels observed in brain of NaF treated mice were reversed with selenium treatment. Glucose-6-phosphate dehydrogenase (-46.98\%), ALAT (-10.44\%), AAT (-10.21\%), CPK (-27.98\%) were decreased and alkaline phosphatase (10.6\%), acid phosphatase (24.09\%) increased in brain of mice after administration of NaF. All metabolic enzymes were significantly (p < 0.01) reversed after administration of selenium to the NaF treated group. Thus, the adverse effects of NaF on oxidative and metabolic enzymes of brain were reversible with ameliorative action of selenium supplementation. As evident in this study the antioxidative nature of selenium coupled with its reversal effect on metabolic enzymes in brain of mice treated with fluoride suggests its use as antidote agent against fluorosis.
This article was published in J Environ Biol and referenced in Cell & Developmental Biology

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