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Int J Vitam Nutr Res. 1977;47(2):119-22.

Levels of neurotransmitters in brain of vitamin B12 deficient rats.


The levels of norepinephrine, dopamine and 5-hydroxytryptamine in brain homogenates of vitamin B12-deficient rats have been investigated. The norepinephrine levels were significantly decreased in the deficient animals compared to controls. The two major catabolic pathways of norepinephrine e.g. monoamine oxidase and catechol-O-methyl transferase did not show significant variations. Both acetyl cholinesterase and butiryl-cholinesterase markedly decreased in the plasma of the vitamin B12-deficient rats.

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