Numerous plant hormones interact during plant growth and development. Elucidating the role of these various hormones on particular tissue types or developmental stages has been difficult with exogenous applications or constitutive expression studies. Therefore, we used tissue-specific promoters expressing CKX1 and gai, genes involved in oxidative cytokinin degradation and gibberellin (GA) signa...

Objective. To investigate changes in serum pituitary-gonadal hormones and restoration of sexual and reproductive functions after successful kidney transplantation. Patients and Methods. Serum pituitary-gonadal hormones before and after kidney transplantation were measured in 78 patients with end-stage renal disease (ESRD) and in 30 healthy adults. Pre- and postoperative semen specimens of 46 ma...

Male mating signals, including ornaments and courtship displays, and other sexually selected traits, like male-male aggression, are largely controlled by sex hormones. Environmental pollutants, notably endocrine disrupting compounds, can interfere with the proper functioning of hormones, thereby impacting the expression of hormonally regulated traits. Atrazine, one of the most widely used herbi...

There are various sex differences in sleep/wake behaviors mice. However, it is unclear whether there sleep homeostasis and arousal responses gonadal hormones involved these differences. Here, we examined under baseline condition, after deprivation by gentle handling, to repeated cage changes male female C57BL/6 mice that hormonally intact, gonadectomized, or gonadectomized with hormone suppleme...

Cimetidine is effective drugs on male reproductive system by its effect semen characteristic or parameters such as sperm motility, morphology and count, also cimetidine sexual hormones, were testosterone, FSH LH. In this investigation, 20 rats randomly classified into two groups, Control group(G1): This group contain 10 receiving normal saline group( G2): 100mg/kg. B.W. from group, during the p...

THE DEVELOPMENT OF THE MAMMALIAN REPRODUCTIVE SYSTEM INVOLVES: (1) an indifferent or ambisexual stage, in which both the male (Wolffian) and female (Mullerian) duct systems are present; (2) sexual differentiation, in which the phenotypic sex is expressed by the enhancement of Mullerian structures in the female and Wolffian structures in the male and reciprocal suppression of the opposite duct s...

Endocannabinoids are natural lipids able to bind to cannabinoid and vanilloid receptors. Their biological actions at the central and peripheral level are under the tight control of the proteins responsible for their synthesis, transport and degradation. In the last few years, several reports have pointed out these lipid mediators as critical signals, together with sex hormones and cytokines, in...

The study was conducted to determine the direct effect of nicotine administration on reproductive hormones in adult male mice (Mus musculus). Adult mice (n=60) were randomly divided into two groups viz. experimental (n=40) and control (n=20) groups. Experimental group was injected with nicotine subcutaneously (1mg/ kg body weight); whereas, the control group was administered with normal saline ...

There is still controversy as to how body mass index (BMI) affects male reproduction. We investigated how BMI is associated with semen quality and reproductive hormones in 166 men, including 38 severely obese men. Standard semen analysis and sperm DNA integrity analysis were performed, and blood samples were analysed for reproductive hormones. Adjusted for age and time of abstinence, BMI was ne...

The male reproductive hormonal axis Maintenance of normal reproductive function is depend­ ent on the coordinated release of hormones in the hyp o­ thalamic−pituitary−testis cascade. Gonadotropin­releasing hormone (GnRH) is released in a pulsatile pattern into the pitu­ itary portal blood system from neuroendocrine cells in the basal hypothalamus and acts to stimulate gonadotropes in the anter­...