Shetty, Gunapala and Krishnamurthy, Hanumanthappa and Krishnamurthy, Hegganahalli N and Bhatnagar, Ajay S and Moudgal, Nuggehali R (1998) Effect of long-term treatment with aromatase inhibitor on testicular function of adult male bonnet monkeys (M-radiata). In: Steroids, 63 (7-8). pp. 414-420.
The role/need for estrogen in regulating testicular function of adult male bonnet monkeys (M. radiata) has been investigated by dosing orally a group of five normal males 2.5 mgs of CGP 47645, a long-acting nonsteroidal aromatase inhibitor (AI), once every 5 days for over 150 days. Such treatment resulted in a 10-fold increment in nocturnal serum testosterone (T) levels, which were sustained for 85 days of treatment, and a twofold increment in basal serum T levels was present throughout the 150 days of treatment. Analysis of ejaculated semen showed a marked reduction (similar to 90%) in sperm counts in four out of five monkeys between Days 55-85 of treatment. During this period, the motility scare also was markedly reduced from a normal score of 3-5 to 0-2. Flow cytometric analysis of testicular germ cells obtained from biopsy tissue taken on Days 63 and 120 indicated a marked reduction only in elongating/elongated spermatid population (compared to Day 0 values), suggesting inhibition in spermiogenic process. Epididymal sperm maturation also seemed effected as sperm chromatin, on flow cytometric analysis for decondensability following exposure to 5 mM dithiotreitol, showed to be in a hypercondensed state. This study thus indicates that estrogen has an important role in providing normal testicular and sperm function in the primate
|Item Type:||Journal Article|
|Additional Information:||Copyright of this article belongs to Elsevier Science.|
|Department/Centre:||Division of Biological Sciences > Molecular Reproduction, Development & Genetics (formed by the merger of DBGL and CRBME)|
|Date Deposited:||20 May 2009 08:31|
|Last Modified:||19 Sep 2010 05:02|
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