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  • Title: Thyroid gland responses to intermale aggression in an inherently aggressive wild rat.
    Author: Gupta SK, Bhat G, Maiti BR.
    Journal: Endokrinologie; 1982 Nov; 80(3):350-2. PubMed ID: 6891921.
    Abstract:
    The aim of the present investigation was to ascertain whether intermale aggression (by fighting) affects thyroid gland activity in wild rat. Following intermale aggression for three hours, thyro-follicular epithelial height was significantly decreased and colloidal content in follicular lumen increased only in the subordinate rats whereas the thyroid gland of the dominant rats was not perceptibly changed. Thus, aggression inhibits thyroid gland activity only in the subordinate rats. It is suggested that this effect may be due to psychosomatic rather than physical stress during aggression.
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