EFFECT OF PRENATAL PROTEIN-DEPRIVATION ON POSTNATAL GRANULE CELL GENERATION IN THE HIPPOCAMPAL DENTATE GYRUS

The effect of prenatal malnutrition, produced by protein deprivation, on postnatal neurogenesis of granule cells in the fascia dentata of th e rat hippocampal formation was examined by injecting tritiated thymid ine on P8 and P15 and sacrificing the pups on P30, or by injecting on P30 and sacrificing on P90. The number of labeled granule cells was si gnificantly decreased in prenatally malnourished rats injected on P8, and unaffected in those injected on P15. In contrast, the number of la beled granule cells in prenatally malnourished rats was significantly increased in animals injected on P30. The study shows that prenatal ma lnutrition significantly alters the postnatal pattern of granule cell neurogenesis in rat hippocampal formation and that the effect persists despite nutritional rehabilitation at birth. Copyright (C) 1996 Elsev ier Science Inc.