نتایج جستجو برای: spermatogenesis index
تعداد نتایج: 404000 فیلتر نتایج به سال:
Purpose: Nicotine can induce sub fertility or infertility both in males and females. The aim of this study is to evaluate the proliferative activity of adult mouse male germ cells following treatment with different doses of nicotine.Materials and Methods: Adult male NMRI mice were divided into four groups. The control group received normal saline and the other animals in groups of 2, 3 and 4 we...
In eukaryotes, post-transcriptional regulation of gene expression has a key role in many cellular and developmental processes. Spermatogenesis involves a complex developmental program that includes changes in cell cycle dynamics and dramatic cellular remodeling. Translational control is critical for spermatogenesis in Drosophila as many mRNAs synthesized in the spermatocytes are translated only...
metronidazole and it’s derivatives are drugs that have both antiprotozoal and anti bacterial effect.the reproductive toxicity of metronidazole has been shown in some studies. to investigate the effect of metronidazole on spermatogenesis in adult male rats, this study was designed. eighteen wistar male rats (70-90days old) were randomly divided into three groups. animals in group i (control grou...
Background: Inactivation of transcription occurs during two phases of spermatogenesis. First, in spermatocytes entering the primary meiosis and the second in round and elongating spermatids. These stages of inactivated transcription demand extensive regulation of translation. Therefore, presence of the control on gene expression during spermatogenesis seems essential. In the cases that post-tra...
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