Effects of Vitamin Supplementation on Lead Toxicity in Wistar Albino Rats
Effects of vitamin supplementation on lead toxicity in wistar albino rats over a short term (3 weeks) was investigated. Studies have revealed that lead has a wide range of health effects that can result from exposure, and that lead can cause health effects at blood lead levels previously thought to be safe. An increasing body of evidence suggests that lead is associated with a number of health conditions. Twenty albino wistar rats were randomly divided into four experimental groups of five rats each, Control group were fed normal rat feed with distilled water, Group 2,3 and 4 were fed normal rat feed, water and received daily oral administration of lead acetate 250mg/kg daily. In addition, groups 3 and 4 received 100mg/kg and 150mg/kg oral administration of vitamin C respectively, for three weeks. Mild effect of lead acetate was observed in hematological parameters as indicated by slightly increase, which was not statistically significant, in RBC and MPV. In contrast, a slight decrease was seen in hemoglobin, PCV, MCV, MCH, MCHC and platelet count. Decrease in MCV, MCH and MCHC indicated shrink in size of RBCs and onset of microcytic anemia due to onset of iron deficiency. However, decrease observed was not statistically significant. Also, the effect of lead acetate was mild on biochemical enzyme activities, indicated by increased level of MDA activity; which indicate oxidative stress, however the increase was not statistically significant. SOD and GPx level were slightly decreased, which was not statistically significant. The doses of vitamin C supplement did not reverse the effect of lead acetate on some hematological parameters and some biochemical enzyme activities, it however reverse the effect of lead acetate on MDA level. In conclusion, exposure to lead acetate over a short term has little effect on hematological parameters and biochemical enzyme activities. The doses of vitamin C use in this study has ameliorative effect on MDA activity but has no effect on some alteration on hematological parameters and some biochemical enzyme activities.
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