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Accessory sex gland function in normal young（20-25 years）and middle-aged（50-55 years）men
Accessory sex gland function normal young（20-25 years） middle-aged（50-55 years）men
2009/2/23
A comparison of various parameters of prostatic and vesicular secretory function was made between the seminal plasma of young (20-25 years; n = 23) and middle-aged (50-55 years; n = 19) male volunte...
Estrogens and cytosolic estrogen receptors in aged male rats
Estrogens cytosolic estrogen receptors aged male rats
2009/2/19
To determine whether estrogens may play a role in the decline in Leydig cell function in aged rats, plasma levels of testosterone, estradiol, and estrone; intratesticular concentrations of testoster...
Transformations of Sperm Nuclei Incorporated Into Aged and Unaged Hamster Eggs
pronuclear development aged and unaged ova
2009/2/19
The extent of male pronuclear development in aged and unaged hamster eggs was examined by electron microscopy. Observations are presented demonstrating that although hamster eggs, aged 18 hours in...
Elevated levels of inhibin-A and immunoreactive inhibin in aged male Wistar rats with testicular Leydig cell tumor
Testis gonadotropins
2008/12/29
This study was undertaken to investigate the endocrine changes that occur in male Tig:Wistar rats with Leydig cell tumors, with special reference to immunoreactive inhibin (ir-inhibin) and its dimer...
Restoration of Erectile Capacity in Normotensive Aged Rats by Modulation of Angiotensin Receptor Type 1
Erectile dysfunction Sprague-Dawley rat losartan
2008/12/23
We investigated the effects of systemic modulation of angiotensin 2 on the erectile dysfunction of aged rats. Young and aged (18 months old) male Sprague-Dawley rats were either treated with daily a...
Balance of Apoptosis and Proliferation of Germ Cells Related to Spermatogenesis in Aged Men
Apoptosis proliferation Bcl-xl aging spermatogenesis
2008/12/19
To clarify whether germ cell apoptosis is related to a decrease of germ cells in the aged testis with impaired spermatogenesis, we investigated the apoptotic rate of each germ cell type. Testicular ...
The Effect of Sildenafil Citrate on Middle-Aged “Normal” Men
erections Middle-Aged Men Sildenafil Citrate sexual response
2008/5/12
The effect of sildenafil citrate on nine non-dysfunctional men was assessed by a post-exposure questionnaire. Almost all (8/9) reported that sildenafil citrate affected their sexual response, but only...