Effect of chronic protein restriction on motor co-ordination and brain neurotransmitters in albino rats.

In this study we evaluated the motor co-ordination in Wistar strain albino rats that were maintained on a protein-restricted diet for a period of 1 year immediately after the weaning period, by substituting 75% of the normal diet with a carbohydrate-rich diet deficient in protein, for a period of 1 year immediately after the weaning period. This type of chronic protein restriction caused disturbances in motor co-ordination. It also caused a significant reduction in the basal levels of dopamine, norepinephrine, epinephrine and serotonin along with their metabolites homovanillic acid (HVA), vanillyl mandelic acid (VMA) and 5-hydroxy indoleacetic acid (5HIAA) and precursor L-dopa in the corpus striatum and cerebellum. Changes in these neurotransmitters could have caused altered co-ordination in the protein-restricted animals.