%0 Journal Article
%T Protective role of the calcium channel blocker amlodipine against mitochondrial injury in ischemia and reperfusion injury of rat liver
%A Chattopadhyay Pronobesh
%A 
%A Aher Vaibhav Dagagi
%A Chaudhury Pallab
%A Wahi Arun Kumar
%J Acta Pharmaceutica
%@ 1846-9558
%D 2008
%I 
%R 10.2478/v10007-008-0022-3
%X Ca2+ accumulation and Ca2+ overloading in mitochondria are responsible for the cell abnormality associated with ischemia and reperfusion injury. The present study was aimed at evaluating the efficacy of the Ca2+ channel blocker amlodipine on the mitochondrial Ca2+ accumulation, mitochondrial antioxidant status and mitochondrial respiratory enzymes in ischemia and reperfusion (I/R) induced liver injury. I/R injury induced mitochondrial damage in rats was assessed in terms of the decrease in activities (p < 0.05) of respiratory marker enzymes (malate dehydrogenase, succinate dehydrogenase and NADH dehydrogenase), mitochondrial antioxidant enzymes (glutathione, superoxide dismutase, catalase), and significant increase (p < 0.05) in the level of lipid peroxidation (LPO) and Ca2+ content. Mitochondrial damage was confirmed by transmission electron microscopic (TEM) examination. Pretreatment with amlodipine effectively counteracted the alteration in mitochondrial enzymes induced by ischemia-reperfusion liver damage. TEM study confirms the restoration of cellular normalcy and the cytoprotective role of amlodipine against I/R induced hepatic injury. On the basis of our findings it may be concluded that amlodipine not only possesses Ca2+ channel antagonist properties but it may also reduce the extent of mitochondrial damage by its antioxidant activity.
%K calcium channel blocker
%K amlodipine
%K ischemia and reperfusion injury
%K mitochondrial injury
%U http://versita.metapress.com/content/734523551g35jv17/?p=417aab3aa8454938aac54af0377115c3&pi=4