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. 2007 Sep;22(2):109–113. doi: 10.1007/BF02913326

Evaluation of serum zinc level and plasma SOD activity in senile cataract patients under oxidative stress

Indranil Chakraborty 1,✉, Sanjoy Kunti 1, Mousumi Bandyopadhyay 3, Anindya Dasgupta 1, Gopal Deb Chattopadhyay 4, Sandip Chakraborty 1
PMCID: PMC3453791  PMID: 23105695

Abstract

An imbalance in the systemic redox status leading to oxidative stress has been an important factor in development of senile cataracts, which is reflected by an increase in serum TBARS and a decrease in plasma SOD activity. Zinc has been an important cofactor required for structural stability of SOD. In the present study the role of serum zinc level and plasma SOD activity was analyzed in senile cataract patients showing significant oxidative stress. Serum TBARS, plasma SOD and serum zinc level was measured in thirty randomly selected senile cataract patients against properly matched controls. Although, the analysis of means showed a significant increase in serum TBARS and decrease in plasma SOD and serum zinc level in cases, but plasma SOD was found to be just significantly correlated (p=0.05) with the serum zinc only in the cases. The results of partial correlation studies and multiple regression analysis, also, showed only a significant correlation and predictable dependence between serum TBARS and plasma SOD, excluding any role of serum zinc level. The present study concludes that it is chiefly the plasma SOD activity, but not the serum zinc level, that determines the proneness of the patients for development of senile cataract.

Key words: Senile cataract, Oxidative stress, TBARS, SOD, Zinc

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