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- W1981431419 abstract "In rats, late prenatal and/or early postnatal zinc deficiency results in behavioural anomalies in adult animals, but not in overt dysmorphogenesis of the central nervous system. Cerebellar and hippocampal development occurs mainly in the first three weeks postnatally and zinc accumulates specifically in the mossy fibres of the hippocampus during this period. In the present investigation, rat pups were suckled by dams fed a zinc-deficient (<0.5 mg/kg) diet either from day 19 of pregnancy or from parturition. Control animals were restricted-fed the same diet supplemented with 100 mg zinc/kg. Studies were performed on pups either on day 18 postpartum in the case of animals fed the experimental diets from parturition, or on day 20 for pups which received treatment from day 19 of gestation. Cerebellar and hippocampal weights were lower in pups suckling from zinc-deficient dams but zinc levels were not affected in either organ, although histological evidence suggested less zinc in the hippocampal mossy fibres. Incorporation of H-thymidine into cerebellar and hippocampal DNA was not affected by maternal zinc status, nor was the activity of the zinc metalloenzyme alkaline phosphatase. The activity of the myelin-marker enzyme 2′, 3′-cyclic nucleotide 3′-phosphohydrolase was substantially lower in both regions of the brain in zinc deprived pups, especially in the hippocampus. Activity of the zinc metalloenzyme L-glutamic acid dehydrogenase was also diminished in both tissues from 20-day-old pups and in the hippocampi of 18-day-old animals. The data suggest that cerebellar and hippocampal DNA synthesis is not seriously affected by late prenatal and/or early postnatal zinc depletion, but that the activities of two enzymes associated with neural function are. The possibility is raised that these defects may be associated with the behavioural changes observed in rats subjected to zinc impoverishment during the period of maximal cerebellar and the hippocampal development." @default.
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- W1981431419 date "1981-05-01" @default.
- W1981431419 modified "2023-10-12" @default.
- W1981431419 title "The effect of late prenatal and/or early postnatal zinc deficiency on the development and some biochemical aspects of the cerebellum and hippocampus in rats" @default.
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- W1981431419 doi "https://doi.org/10.1016/0024-3205(81)90620-2" @default.
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