Effect of Methanolic Leaf Extract of Boswellia dalzielii Hutch on Ocular ATPase Profiles of Selenite-induced Cataract in Wistar Pups
Divine A. Onobrudu *
Department of Biochemistry, Faculty of Science, University of Port Harcourt, P.M.B. 5323, Port Harcourt, Nigeria
Eugene N. Onyeike
Department of Biochemistry, Faculty of Science, University of Port Harcourt, P.M.B. 5323, Port Harcourt, Nigeria
Jude C. Ikewuchi
Department of Biochemistry, Faculty of Science, University of Port Harcourt, P.M.B. 5323, Port Harcourt, Nigeria
*Author to whom correspondence should be addressed.
Abstract
The effect of methanolic leaf extract of Boswellia dalzielii Hutch on ocular ATPase of selenite-induced cataract was investigated in Wistar rat pups. Nine groups of 5 pups each were used for the study. Cataract was induced by intra-peritoneal administration of 30 µmol·kg-1 body weight of sodium selenite, to groups 2 to 9, while group 1 received normal saline. The administration of Boswellia dalzielii Hutch extract commenced eight days post administration of selenite, and lasted for 28 days. The extract was orally administered to groups 5 to 9, at doses of 300, 400, 500, 600 and 700 mg·kg-1 body weight respectively; groups 3 and 4 received 50 mg·kg-1 body weight each of vitamins C and A respectively; while groups 1 and 2 received water in place of the extract. Ocular activities of Na+,K+-ATPase and Mg2+ ATPase were estimated by measuring the amount of inorganic phosphate released by them, using ammonium molybdate reagent. The extract treated pups showed elevated ocular Na+,K+-ATPase activity and decreased ocular Mg2+ ATPase activity. This study showed that methanol extract from the leaves of B. dalzielii Hutch modulated the activities of ocular Na+,K+- and Mg2+ ATPases, thus highlighting its possible potential for restoring the osmotic equilibrium of cataractous lenses.
Keywords: Boswellia dalzielii Hutch, cataract, magnesium ATPase, sodium potassium ATPase, sodium-selenite