Abstract
Starvation-induced alterations in liver lysosomes and their recovery pattern following refeeding were investigated. Fasting of adult rats for five days caused an increase in ‘free’ activities of acid hydrolyses in liver homogenates and loss in sedimentation of one of the heterogenous populations of lysosomes that could be isolated by differential centrifugation. Isopycnic sucrose gradient centrifugation revealed a decrease in the median and modal equilibration densities of all the forms of lysosomes in response to the dietary deprivation. Further, starvation also evoked a distinct bimodal distribution in a population that was rich in acid phosphatases, β-galactosidase and N-acetyl- βglucosaminidase. Realimentation of starved animals for 10 days was found to restore the enzyme levels and the sedimentation characteristics to normal profiles.
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