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The effect of early postnatal undernutrition on the growth and development of the rat brain

Published online by Cambridge University Press:  09 March 2007

B. L. G. Morgan  and
D. J. Naismith
B. L. G. Morgan
Affiliation:
Department of Nutrition, Queen Elizabeth College, University of London, W8 7AH
D. J. Naismith
Affiliation:
Department of Nutrition, Queen Elizabeth College, University of London, W8 7AH
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Abstract

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1. Rat pups were undernourished during the period of the brain growth-spurt by feeding their mothers a low-protein diet from the third day post partum.

2. The pups were killed on days 5,6,9,12,16,20 and 24 post partum, and their brains were analysed for protein, DNA, glycosides and glycoproteins. The activities of four enzymes involved in neurotransmission, and in the synthesis of glycolipids and myelin were also measured. Results of the analyses were compared with those obtained for pups that were suckled by well-nourished dams.

3. The brains of the undernourished pups contained substantially less protein and DNA; gangliosides and glycoproteins were also reduced.

4. All four enzymes showed lower peak activities in the nutritionally deprived animals, and the attainment of peak activity was retarded by several days.

5. These results suggest that undernutrition imposed during the brain growth-spurt leads to a deficit in the glial cell population and thus in the capacity to form myelin, and reduced deveiopment of cellular processes.

Type
Papers on General Nutrition
Information
British Journal of Nutrition , Volume 48 , Issue 1 , July 1982 , pp. 15 - 23
Copyright
Copyright © The Nutrition Society 1982

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