The aim of this review is to analyze current diagnostic approaches to obesity in adult men, the potential mechanisms linking obesity to infertility, and treatment options aimed at improving reproductive health. Obesity has become a worldwide epidemic with the estimated prevalence increasing from 28.8% to 36.9% between 1980 and 2013. In terms of diagnosis, numerous simple techniques have been de...

Hormonal changes during non-maternal infant care have been demonstrated in many cooperatively breeding bird species, some monogamous rodents and two species of New World primates. Coevolution of hormones and social traits may have provided for the different breeding systems that occur today. Several hormones have been shown to covary with the breeding systems of vertebrates. Elevated levels of ...

Using comparative phylogenetic analysis, we analyzed the evolution of male alternative reproductive tactics (MARTs) in ray-finned fishes (Actinopterygii). Numerous independent origins for each type of MART (involving sneaker males, female mimics, pirates, and satellite males) indicate that these behaviors have been highly labile across actinopterygiian evolution, consistent with a previous noti...

Background and Aims: Decreased sperm motility and increased level of oxidative stress are major causes of male infertility. This study was designed to evaluate the effect of propolis supplementation on spermatogram and reproductive hormones in asthenozoospermic men. Materials and Methods: In this randomized, double-blind controlled clinical trial, 60 asthenozoospermic men attending an inferti...

OBJECTIVES : Decreased libido and a decline in morning serum testosterone levels were reported in men with obstructive sleep apnea (OSA). Our study aimed to evaluate the pituitary-gonadal axis in middle age men with OSA before and after treatment with nasal continuous positive airway pressure (CPAP). MATERIAL AND METHODS : Measurement of the nocturnal serum luteinizing hormone (LH) and testoste...

Spermatogenesis is a complex process in which male germ cells undergo a mitotic phase followed by meiosis and by a morphogenetic process to form mature spermatozoa. Spermatogenesis is under the control of gonadotropins, steroid hormones and it is modulated by a complex network of autocrine and paracrine factors. These modulators ensure the correct progression of germ cell differentiation to for...

background: hormones can play a significant role in the pathogenesis of multiple sclerosis (ms). the aim of this study was to compare levels of ghrelin, leptin, and testosterone hormones of ms patients with healthy subjects, and assess the relationship between levels of peptide hormone and sex hormones in ms patients. methods: 35 ms patients with definite relapsing remitting multiple sclerosis ...