RT Journal Article ID 7b88f0f72f29af23 A1 Vani, Ganapathy A1 Devi, Chennam Srinivasulu Shyamala T1 Protective Effect of Bacoside A on Cigarette Smoking-Induced Brain Mitochondrial Dysfunction in Rats JF Journal of Environmental Pathology, Toxicology and Oncology JO JEP(T) YR 2005 FD 2005-07-06 VO 24 IS 3 SP 225 OP 234 AB Chronic exposure to cigarette smoke affects the structure and function of mitochondria, which may account for the pathogenesis of smoking-related diseases. Bacopa monniera Linn., used in traditional Indian medicine for various neurological disorders, was shown to possess mitro-chondrial membrane-stabilizing properties in the rat brain during exposure to morphine. We investigated the protective effect of bacoside A, the active principle of Bacopa monniera, against mitochondrial dysfunction in rat brain induced by cigarette smoke. Male Wistar albino rats were exposed to cigarette smoke and administered bacoside A for a period of 12 weeks. The mitochondrial damage in the brain was assessed by examining the levels of lipid peroxides, cholesterol, phospholipid, cholesterol/phospholipid (C/P) ratio, and the activities of isocitrate dehydrogenase, α-ketoglutarate dehydrogenase, succinate dehydrogenase, malate dehydrogenase, NADH dehydrogenase, and cytochrome C oxidase. The oxidative phosphorylation (rate of succinate oxidation, respiratory control ratio and ADP/O ratio, and the levels of ATP) was evaluated for the assessment of mitochondrial functional capacity. We found significantly elevated levels of lipid peroxides, cholesterol, and C/P ratio, and decreased levels of phospholipids and mitochondrial enzymes in the rats exposed to cigarette smoke. Measurement of oxidative phosphorylation revealed a marked depletion in all the variables studied. Administration of bacoside A prevented the structural and functional impairment of mitochondria upon exposure to cigarette smoke. From the results, we suggest that chronic cigarette smoke exposure induces damage to the mitochondria and that bacoside A protects the brain from this damage by maintaining the structural and functional integrity of the mitochondrial membrane. PB Begell House LK https://www.dl.begellhouse.com/journals/0ff459a57a4c08d0,3514f0af2eca0266,7b88f0f72f29af23.html