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DOI: 10.1055/s-0029-1211249
© J. A. Barth Verlag in Georg Thieme Verlag KG Stuttgart · New York
Effect of L-Thyroxine and Carbimazole on Blood Levels of Biogenic Amines in Rat
Publikationsverlauf
Publikationsdatum:
15. Juli 2009 (online)

Summary
Circulating levels of 5-hydroxytryptamine (5HT), histamine, monoamine oxidase (MAO), histaminase, tri-iodothyronine (T3) and thyroxine (T4) were studied in L-thyroxine and carbimazole treated rats. Increased concentrations of 5-HT, histamine, glutamate, T3 and T4 were recorded in L-thyroxine-treated rats while plasma gamma-aminobutyric acid (GABA), MAO and histaminase levels were significantly decreased. Considerable reduction in 5-HT, glutamate, T3 and T4 with trend towards the rise in plasma levels of MAO and histaminase was noticed in carbimazole treated group. There was a significant correlation between these amines and thyroid hormone values. The findings suggest that alterations in the metabolism of thyroid hormones may have a link with the altered metabolism of biogenic amines.
Key words
Biogenic amines - L-thyroxine - Carbimazole - Thyroid hormones