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Prenatal exposure to alcohol alters the Golgi apparatus of newborn rat hepatocytes: a cytochemical study

J Renau-Piqueras, F Miragall, C Guerri and R Baguena-Cervellera

The effect of prenatal exposure to ethanol on the Golgi apparatus of newborn rat hepatocytes has been studied cytochemically using several trans-Golgi markers (thiamine pyrophosphatase, uridine diphosphatase, inosine diphosphatase, acid phosphatase, and 5'-nucleotidase) as well as a cis-side marker (osmium impregnation). The amount of cerium phosphate formed in the cytochemical reactions was roughly quantitated by stereologic methods. The Golgi apparatus of about 40% of the hepatocytes appeared disorganized after alcohol treatment, and in the other 60%, the electron density of reaction product deposits for all phosphatases investigated was decreased. 5'-Nucleotidase was completely absent in cisternae of Golgi apparatus of treated cells. In control cells impregnated with osmium tetroxide, reduced osmium compounds were observed in most Golgi cisternae and in nearby vesicles. In contrast, only small vesicles appeared positive in treated hepatocytes. These results suggest that prenatal alcohol exposure alters some Golgi functions. Thus, the decrease in nucleoside diphosphatase and 5'- nucleotidase cytochemical activities after ethanol exposure strongly suggests that this treatment could affect glycosylation in the Golgi apparatus of newborn rat hepatocytes.

Volume 35, Issue 2, pp. 221-228, 02/01/1987
Copyright © 1987 by The Histochemical Society


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