JOURNAL ARTICLE

Therapeutic effect of Semecarpus anacardium Linn. nut milk extract on carbohydrate metabolizing and mitochondrial TCA cycle and respiratory chain enzymes in mammary carcinoma rats

G Arathi, P Sachdanandam
Journal of Pharmacy and Pharmacology 2003, 55 (9): 1283-90
14604472
Semecarpus anacardium Linn. of the family Anacardiaceae has many applications in the Ayurvedic and Siddha systems of medicine. We have evaluated the effect of S. anacardium nut milk extract on carbohydrate metabolizing enzymes and mitochondrial tricarboxylic acid cycle and respiratory enzymes in liver and kidney mitochondria of dimethyl benzanthracene-induced mammary carcinoma in Sprague-Dawley rats. Mammary carcinoma-bearing rats showed a significant rise in glycolytic enzymes (hexokinase, phosphoglucoisomerase and aldolase) and a simultaneous fall in gluconeogenic enzymes (glucose-6-phosphatase and fructose 1,6-diphosphatase). The activities of mitochondrial enzymes isocitrate dehydrogenase, alpha-ketoglutarate dehydrogenase, succinate dehydrogenase, malate dehydrogenase, NADH-dehydrogenase and cytochrome C oxidase were significantly lowered in mammary carcinoma-bearing rats when compared with control rats. S. anacardium nut extract administration to tumour-induced animals significantly lowered the glycolytic enzyme activities (hexokinase, phosphoglucoisomerase and aldolase) and there was a rise in gluconeogenic enzymes (glucose-6-phosphatase and fructose 1,6-diphosphatase), which indicated an antitumour and anticancer effect. Comparison of normal control rats and rats administered S. anacardium only as drug control animals showed no significant variations in enzyme activities. S. anacardium nut extract administration to dimethyl benzanthracene-tumour-induced animals significantly increased the activities of mitochondrial enzymes, thereby suggesting its role in mitochondrial energy production.

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