Title
Effects of elevated gonadotropin levels on thyroid function in the male rat
Abstract
In order to determine if thyroid disease in hypogonadal men is the result of chronic elevation of serum gonadotropins, thyroid histology and serum thyroid hormone levels were evaluated in male rats that had been castrated either 2 weeks or 15 months previously. Despite significantly elevating serum LH levels, castration did not affect thyroid structure or function. Serum total T4 levels were reduced with age in both short and long-term castrate animals but returned to the levels seen in young rats when testosterone was replaced. Testosterone replacement also increased free T4 levels in both the young and old castrate rats. Neither age nor testosterone replacement affected serum T3 or TSH levels.
Department(s)
Physical Therapy
Document Type
Article
DOI
https://doi.org/10.1016/0024-3205(89)90439-6
Publication Date
1989
Recommended Citation
Steger, R. W., V. Chandrashekar, A. Bartke, J. Wortsman, S. C. Newton, Robert Christian Smallridge, and J. Dietrich. "Effects of elevated gonadotropin levels on thyroid function in the male rat." Life sciences 45, no. 1 (1989): 85-90.
Journal Title
Life sciences
