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Effect of pyridoxine deficiency in young rats on high-affinity serotonin and dopamine receptors

✍ Scribed by C. S. Paulose; Dr. K. Dakshinamurti

Publisher
John Wiley and Sons
Year
1985
Tongue
English
Weight
465 KB
Volume
14
Category
Article
ISSN
0360-4012

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✦ Synopsis

The high-affinity bindings of [3H]-5-hydroxytryptamine to serotonin S-1 receptors, [3H]-ketanserin to serotonin S-2 receptors in the cerebral cortex, [3H]-fluphenazine to dopamine D-1 receptors, and [3H]-spiroperidol to dopamine D-2 receptors in the corpus striatum were studied in pyridoxine-deficient rats and compared to pyridoxine-supplemented controls. There was a significant increase in the maximal binding (Bmax) of serotonin S-1 and S-2 receptors with a significant decrease in their binding affinities (Kd). However, there were no significant changes either in the maximal binding or binding affinity of striatal dopamine D-1 and D-2 receptors. Receptor sensitivity seems to correlate negatively with the corresponding neurotransmitter concentrations in the pyridoxine-deficient rats.

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