Effects of androgen treatment of the neonate on rat testis and sex accessory organs
Testosterone metabolism, androgen receptors, and the androgen binding protein (ABP) were studied male albino rats injected wit 1 mg of testosterone propionate (TP) on Day 2 of life. The epididymal content of ABP was diminished inmmature but not in adult animals treated neonatally with androgen. No c...
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todo:paper_00063363_v25_n4_p851_Baranao2023-10-03T14:04:49Z Effects of androgen treatment of the neonate on rat testis and sex accessory organs Baranao, J.L. Chemes, H.E. Tesone, M. Chiauzzi, V.A. Scacchi, P. Calvo, J.C. Faigon, M.R. Moguilevsky, J.A. Charreau, E.H. Calandra, R.S. 5alpha androstane 3alpha,17beta diol c 14 androgen binding protein androgen receptor androstanolone h 3 enzyme methyltrienolone h 3 radioisotope steroid reductase testosterone testosterone h 3 testosterone propionate unclassified drug age animal experiment article endocrine system epididymis histology hormone metabolism male genital system newborn prostate rat sex accessory organ sexual development subcutaneous drug administration testis Animalia Testosterone metabolism, androgen receptors, and the androgen binding protein (ABP) were studied male albino rats injected wit 1 mg of testosterone propionate (TP) on Day 2 of life. The epididymal content of ABP was diminished inmmature but not in adult animals treated neonatally with androgen. No changes were detected in the testicular levels of this protein in 27-day-old rats. In adult animals atrophic lesions were seen in 3% of the seminiferous tubules. Androgen treatment of neonates led to a substantial decrease in the 5α-reductase activity in homogenates of prostate gland and epididymis from adult rats with a concomitant decline in the 3α-β-hydroxysteroid dehydrogenase activities in both tissues. These animals did not show any change in the number of available or total androgen receptor sites as measured by incubating prostatic cytosol with [3H]R1881. The present findings suggest that the impaired development of the male genital tract could be partially due to diminished peripheral conversion of testosterone to its active, 5α-reduced metabolites. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00063363_v25_n4_p851_Baranao |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
5alpha androstane 3alpha,17beta diol c 14 androgen binding protein androgen receptor androstanolone h 3 enzyme methyltrienolone h 3 radioisotope steroid reductase testosterone testosterone h 3 testosterone propionate unclassified drug age animal experiment article endocrine system epididymis histology hormone metabolism male genital system newborn prostate rat sex accessory organ sexual development subcutaneous drug administration testis Animalia |
| spellingShingle |
5alpha androstane 3alpha,17beta diol c 14 androgen binding protein androgen receptor androstanolone h 3 enzyme methyltrienolone h 3 radioisotope steroid reductase testosterone testosterone h 3 testosterone propionate unclassified drug age animal experiment article endocrine system epididymis histology hormone metabolism male genital system newborn prostate rat sex accessory organ sexual development subcutaneous drug administration testis Animalia Baranao, J.L. Chemes, H.E. Tesone, M. Chiauzzi, V.A. Scacchi, P. Calvo, J.C. Faigon, M.R. Moguilevsky, J.A. Charreau, E.H. Calandra, R.S. Effects of androgen treatment of the neonate on rat testis and sex accessory organs |
| topic_facet |
5alpha androstane 3alpha,17beta diol c 14 androgen binding protein androgen receptor androstanolone h 3 enzyme methyltrienolone h 3 radioisotope steroid reductase testosterone testosterone h 3 testosterone propionate unclassified drug age animal experiment article endocrine system epididymis histology hormone metabolism male genital system newborn prostate rat sex accessory organ sexual development subcutaneous drug administration testis Animalia |
| description |
Testosterone metabolism, androgen receptors, and the androgen binding protein (ABP) were studied male albino rats injected wit 1 mg of testosterone propionate (TP) on Day 2 of life. The epididymal content of ABP was diminished inmmature but not in adult animals treated neonatally with androgen. No changes were detected in the testicular levels of this protein in 27-day-old rats. In adult animals atrophic lesions were seen in 3% of the seminiferous tubules. Androgen treatment of neonates led to a substantial decrease in the 5α-reductase activity in homogenates of prostate gland and epididymis from adult rats with a concomitant decline in the 3α-β-hydroxysteroid dehydrogenase activities in both tissues. These animals did not show any change in the number of available or total androgen receptor sites as measured by incubating prostatic cytosol with [3H]R1881. The present findings suggest that the impaired development of the male genital tract could be partially due to diminished peripheral conversion of testosterone to its active, 5α-reduced metabolites. |
| format |
JOUR |
| author |
Baranao, J.L. Chemes, H.E. Tesone, M. Chiauzzi, V.A. Scacchi, P. Calvo, J.C. Faigon, M.R. Moguilevsky, J.A. Charreau, E.H. Calandra, R.S. |
| author_facet |
Baranao, J.L. Chemes, H.E. Tesone, M. Chiauzzi, V.A. Scacchi, P. Calvo, J.C. Faigon, M.R. Moguilevsky, J.A. Charreau, E.H. Calandra, R.S. |
| author_sort |
Baranao, J.L. |
| title |
Effects of androgen treatment of the neonate on rat testis and sex accessory organs |
| title_short |
Effects of androgen treatment of the neonate on rat testis and sex accessory organs |
| title_full |
Effects of androgen treatment of the neonate on rat testis and sex accessory organs |
| title_fullStr |
Effects of androgen treatment of the neonate on rat testis and sex accessory organs |
| title_full_unstemmed |
Effects of androgen treatment of the neonate on rat testis and sex accessory organs |
| title_sort |
effects of androgen treatment of the neonate on rat testis and sex accessory organs |
| url |
http://hdl.handle.net/20.500.12110/paper_00063363_v25_n4_p851_Baranao |
| work_keys_str_mv |
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| _version_ |
1807324520218886144 |