Abstract
Malnutrition from the last week of gestation resulted in significant diminution in weight and total protein content of cerebral cortex of 12- and 24-day-old rats. In synaptosomal fractions from cerebral cortices of 24-day-old malnourished rats the recovery of protein and of acetylcholinesterase and choline acetyltransferase activity per gram of fresh tissue was higher than in the controls. Quantitative morphologic studies showed no difference in the composition of synaptosomal fractions from malnourished and control rats. The higher yield in protein. AChE and ChAc of synaptosome fractions may indicate that presynaptic endings are relatively spared by perinatal malnutrition, however, the possibility that these results are due to an altered distribution of the presynaptic endings among the various subcellular fractions cannot be ruled out.
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