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Effects of thyroxine treatment during lactation on the testicular function of rats across different ages
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Abstract
Thyroid hormones are involved in the development of several tissues and organs and are essential for the normal growth and reproductive function. The aim of this study was to determine the effects of thyroid hormones on the development of testis and progression of spermatogenesis. Lactating mothers were treated with oral thyroxine (T4; 20 μg/100 g) for 20 days after parturition. The pups were decapitated at the age of 20, 40 and 60 days post partum. Neonatal hyperthyroidism resulted in a decrease in body and testis mass, an increase of free thyroxine and a decrease of testosterone concentrations in plasma of treated rats. The treatment was associated with a significant decrease of the diameter of seminiferous tubules and a slowdown in spermatogenesis, following a delay in the maturation of germ cells. We conclude that thyroid hormones affect the progression of postnatal spermatogenesis.
Abstract
Thyroid hormones are involved in the development of several tissues and organs and are essential for the normal growth and reproductive function. The aim of this study was to determine the effects of thyroid hormones on the development of testis and progression of spermatogenesis. Lactating mothers were treated with oral thyroxine (T4; 20 μg/100 g) for 20 days after parturition. The pups were decapitated at the age of 20, 40 and 60 days post partum. Neonatal hyperthyroidism resulted in a decrease in body and testis mass, an increase of free thyroxine and a decrease of testosterone concentrations in plasma of treated rats. The treatment was associated with a significant decrease of the diameter of seminiferous tubules and a slowdown in spermatogenesis, following a delay in the maturation of germ cells. We conclude that thyroid hormones affect the progression of postnatal spermatogenesis.
Keywords
Hyperthyroidism; Sertoli cell; Leydig cell
About this articleTitle
Effects of thyroxine treatment during lactation on the testicular function of rats across different ages
Journal
Folia Histochemica et Cytobiologica
Issue
Article type
Original paper
Pages
107-114
Published online
2013-08-02
Page views
1598
Article views/downloads
2346
DOI
10.5603/FHC.2013.0017
Bibliographic record
Folia Histochem Cytobiol 2013;51(2):107-114.
Keywords
Hyperthyroidism
Sertoli cell
Leydig cell
Authors
Souhila Dahmani-Said
Zohra Hamouli-Said
Assia Kamel
Fatima Hadj-Bekkouche
