Infertility is a growing medical and social problem in the world; and approximately one of five couples has problems with conception [1]. Several fertility workers did focus in their search on female etiological factors for infertility, despite the fact that assessment of male fertility potential is of great importance. Male partner may involve in the aetiology of half of cases, either as prima...

present study was conducted to find the variations in fatty acid profile between muscle and liver of male and female of schizothorax zarudnyi. totally, 18 fatty acids of saturated, mono-unsaturated and poly-unsaturated fatty acids were found in both male and female of s. zarudnyi. palmitic acid (c16:0), palmitoleic acid (c16:1) and docosahexaenoic acid (c22:0) were the most abundant fatty acids...

background: the present study examined the possible role of endogenous opioidergic system in effect of food deprivation on formalin-induced nociceptive behaviors in male and female rats. also, we investigated the effect of food deprivation on the plasma level of beta-endorphin and sex hormones. methods: food was withdrawn 48 h prior to performing the formalin test, but water continued to be ava...