Abstract
We investigated the effect of maternal alcohol consumption on cell number, gangliosides and ganglioside catabolizing enzymes in the central nervous system (CNS) of the offspring. Virgin female rats of the Charles Foster strain were given 15% (v/v) ethanol in drinking water one month prior to conception and during gestation and lactation. At 21 days postnatal age, the offspring were sacrificed and the brains were separated into cerebrum, cerebellum and brain stem to investigate possible regional variations. Compared to controls, wet weight of cerebrum, cerebellum and brain stem, and of spinal cord was decreased in the pups exposed to alcohol. DNA and protein contents were also found to be lowered in all the CNS regions of the pups exposed to alcohol. Conversely, maternal alcohol consumption was found to increase the concentration and the content of total gangliosideN-acetylneuraminic (NANA) in CNS of the pups. In addition, alcohol treatment was found to induce alterations in the proportions of individual ganglioside fractions. Interestingly, these alterations are somewhat different than those observed in the neonatal brain and spinal cord of the pups subjected to prenatal alcohol exposure. The alterations in the proportions of ganglioside fractions were shown to be region-specific. Maternal alcohol consumption resulted in decreased activities of sialidase, β-galactosidase, β-glucosidase and β-hexosaminidase. The results suggest that the alcohol-associated increases in ganglioside concentration may be at least partly due to the decreased activities of ganglioside catabolizing enzymes.
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Abbreviations
- AL:
-
pups exposed to alcohol
- BS:
-
brainstem
- C:
-
cerebrum
- CB:
-
cerebellum
- CNS:
-
central nervous system
- CT:
-
control pups
- FAS:
-
fetal alcohol syndrome
- NANA:
-
N-acetylneuraminic acid
- SC:
-
spinal cord
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Prasad, V.V.T.S. Effect of prenatal and postnatal exposure to ethanol on rat central nervous system gangliosides and glycosidases. Lipids 27, 344–348 (1992). https://doi.org/10.1007/BF02536148
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DOI: https://doi.org/10.1007/BF02536148