Ovarian Stimulation Effects on Ghrelin Secretion and Reproductive Potential.

Objective: Finely regulated Ghrelin (Ghrl) secretion is essential during early pregnancy, as infra or supraphysiologic levels can be detrimental. Since oestrogens stimulate Ghrl synthesis, ovarian stimulation (OS) might increase ghrelinemia, thus being detrimental for fertility. The aim of this work was to evaluate whether OS increases ghrelinemia and associates with maternal endocrine and immune biomarkers and reproductive success.

Persistent oligonecrozoospermia after asymptomatic SARS-CoV-2 infection. A case report and literature review.

COVID-19 is known to have deleterious effects on different systems such as the respiratory, cardiovascular, central nervous, and gastrointestinal. However, conflicting data about the possible implications for male reproductive health and fertility have been reported. In addition, the long-term consequences of SARS-CoV-2 infection remain unclear.

Association between meteorological variables and semen quality: a retrospective study.

Spermatogenesis is a temperature-dependent process, and high summer temperatures have been linked to lower sperm concentration and count. However, reports describing the association between other meteorological variables and semen quality are scarce. This study evaluated the association between semen quality and temperature, humidity, pressure, apparent temperature (AT), temperature-humidity index (THI), simplified wet-bulb global temperature (sWBGT), and sunshine duration.

Recategorisation of body mass index to achieve andrological predictive power: a study in more than 20 000 patients.

The aim of this study was to recategorise body mass index (BMI) in order to classify patients according to their risk of semen abnormalities. Patients (n=20563) presenting at an andrology laboratory were classified into five groups according to BMI: underweight (BMI <20kg m-2), normal weight (BMI 20-24.9kg m-2), overweight (BMI 25-29.

Impact of age, clinical conditions, and lifestyle on routine semen parameters and sperm kinematics.

Objective: To assess the impact of aging on routine semen and computer-assisted sperm analysis (CASA) motility parameters according to the current World Health Organization guidelines; and to evaluate the effect of obesity and lifestyle (alcohol consumption, cigarette smoking) in older men's semen.

Design: Blind cross-sectional study.

Setting: Research laboratory and andrology and reproduction laboratory.