Journal of Stress Physiology & Biochemistry, Vol. 9 No. 4 2013, pp. 230-240 ISSN 1997-0838
Original Text Copyright (cc) 2013 by   Necib, Bahi, Zerizer, Abdennour, Boulakoud



ORIGINAL ARTICLE
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Hepatoprotective Role of Sodium Selenite Against Oxidative Damage Induced by Mercuric Chloride in Rat Albinos Wistar

Youcef Necib1*,Ahlem Bahi1, Sakina Zerizer2, Cherif Abdennour3, Mohamed Salah Boulakoud3

1 Department  of  Biochemistry  and  biological  cellular  and  molecular,  Faculty  of  sciences,  Mentouri university, BP 25000 Constantine, Algeria
2 Laboratory of microbiological engineering and application, Faculty of sciences, Mentouri university, BP 25000 Constantine, Algeria
3 Animal Ecophysiology laboratory, Faculty of Sciences, Badji Mokhtar University, BP12 Sidi Amar, Annaba, Algeria

*E-Mail:  youcefnecib@yahoo.fr 


Received July 15, 2013


Background: The present study was undertaken, to evaluate the protective effect of sodium selenite against mercuric chloride induced oxidative stress in experimental rats. Female Albinos Wistar rats randomly divided into four groups, were the first was served as a control, whereas the remaining groups respectively treated with: sodium selenite (1mg/ kg b.w; ip), mercuric chloride (1 mg/kg body weight i.p) and combination of sodium selenite and HgCl2. Change in liver enzyme activities, thiobarbituric acid reactive substances (TBARS) level, antioxidants and reduced glutathione (GSH) contents were determined after 10 days experimental period.
Results: Exposure of rats to mercuric chloride caused a significant increase the lipid peroxidation level  along  with  corresponding  decrease  in  the  reduced  glutathione  and  various  antioxidant enzymes  in  liver.  And  increase  in  serum:  glucose  level,  APL  and  transaminases  activities  and decreased  in  total  protein  and  albumin  levels.  Furthermore,  treatment  with  mercuric  chloride caused a marked elevation of liver weight and decreased body weight. Supplementation of sodium selenite  resulted  in  decreased  of  lipid  peroxidation  level  and  in  the  serum:  AST,  ALT  and  APL activities were decreased along with increase in total protein, albumin and liver GSH levels. The activities of antioxidants enzymes: glutathione peroxidase (GSH -Px) and glutathione –S-transferase (GST) were also concomitantly restored to near normal level by sodium selenite supplementation to mercuric chloride intoxicated rats. Liver histological studies have confirmed the changes observed in biochemical parameters and proved the beneficial role of sodium selenite.
Conclusion:  The  results  clearly  demonstrate  that  sodium  selenite  treatment  augments  the antioxidants defense mechanism in mercuric chloride induced toxicity and provides evidence that it may have a therapeutic role in free radical mediated diseases.


Key words:   Antioxidant enzymes, sodium selenite, Mercury, Oxidative stress, female Rat

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