Adaptive changes of the rat liver cells induced by repeated intraperitoneal injections of d-galactosamine. II. Light and electron microscopic investigations of hepatocellular nucleolar alterations

Nuclear and nucleolar effect of experimental endotoxemia on rabbit hepatocytes

Nuclear and nucleolar ultrastructure was studied in hepatocytes of rabbits intravenously injected with a single dose of endotoxin to provide more information on the ultrastructural changes of hepatocytes produced by the endotoxemia. The observed changes were represented by a clumping of interchromatin granules, alteration of nucleolar architecture and formation of rodlet-like intranuclear inclusions. The alteration of the nucleolar architecture was characterized by loosely arranged rope-like nucleolonemata, partial retraction of the perinucleolar chromatin and increased numbers of fibrillar centers.

Adaptive changes of rat liver cells induced by repeated intraperitoneal injections of d-galactosamine. III-Light- and electron-microscopic investigations of hepatocellular cytoplasmic changes

In rats hepatocellular cytoplasmic changes after daily repeated D-galactosamine (GalN) intoxication--i.e. subacute GalN intoxication--were studied by light and electron microscopy. The number of GalN injections--and thus the days of survival--was between one and 30. The rats were killed six hours after the last GalN injection. Less degenerative changes were found after repeated GalN injections. An increased formation of atypical dense bodies (ADB), a temporary pronounced lipid accumulation and changes of the rough and smooth endoplasmic reticulum were prominent features of subacute GalN intoxication. The implications with respect to a modified GalN action in subacute GalN intoxication are discussed with special reference to biochemical data obtained in the same experimental model (Schuchhardt et al., 1977).