Abstract
In this study, the histopathological and histochemical changes due to chronic usage of morphine sulphate in liver were assessed in rats with both light and electron microscopes. Twenty male albino rats (Rattus norvegicus) (130-150 g) were included and divided into four groups. Normal saline (5 ml) was given orally as placebo in the control group (N=5). Morphine groups (N=5) received morphine orally at a single dose of 5 ml/kg/day for 10, 20 and 30 days (groups II, III and IV), respectively. Liver specimens from all groups were evaluated for histopathological and histochemical changes. Light microscopy revealed severe centrilobular congestion, portal fibrosis with bile ductal proliferation and an increased inflammatory infiltration and focal parenchymal necrosis. Histochemical study revealed a progressive depletion of general carbohydrates and an increase in total protein contents. These changes were confirmed at ultrastructural level, including the presence of accumulated lipid in the hepatocytes; deposits of a collagen-like fibrous material were seen in the space of Disse and a reduction in the number of endothelial cell fenestrations. Our findings pointed out the risk of increased lipid fibrosis and hepatic damage due to long...Continue Reading
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