Reproductive and menstrual characteristics, as well as high circulating estrogen concentrations, are associated with risk of hormone-related cancers in postmenopausal women. To explore possible etiologic relationships between menstrual/reproductive characteristics and risk of hormone-related cancers, we examined associations between menstrual/reproductive factors and serum concentrations of fre...

Background: Formaldehyde (FA) is a suspected reproductive toxicant, which may cause significant adverse effects on human reproductive system. Given to its widespread use in occupational setting, and more recently, in several industries related to construction and household products, everyone may be exposed to FA. This study was designed to determine the effect of FA and to investigate possible ...

Phthalates are a class of plasticizing chemicals produced in high volume and widely found in consumer products. Evidence suggests that phthalates may have non-monotonic effects on reproductive hormone activity. With exposure to phthalates virtually ubiquitous among industrialized populations, identifying unexposed and/or minimally exposed human populations is essential for understanding the eff...

The author discusses the standardized reproductive staging system, its utility and limitations in guiding clinical decisions, includes three case scenarios which NPs can use skilled history taking listening to provide individualized care without unnecessary hormone tests.

In most vertebrates, production of reproductive hormones wanes with age, co-occurring with a decline in reproductive output. Measurement of these hormones can serve as a key marker of the onset of reproductive senescence. Longitudinal studies of physiological parameters in populations of free-living animals are relatively uncommon; however, we have monitored baseline concentrations of hormones ...

The aim of this study was to review the effect of estrogen on growth hormone secretion and the roles of estrogen and growth hormone in reproductive function. Estrogen is the main hormone affecting growth, development, maturation and functioning of reproductive tract as well as the sexual differentiation and the behavior. Growth hormone is also important factor in sexual maturation and attainmen...

Recognizing the potential value of steroid hormone measurements to augment non-invasive genetic sampling, we developed procedures based on enzyme-linked immunoassays to quantify reproductive steroid hormone concentrations in brown bear (Ursus arctos) hair. Then, using 94 hair samples collected from eight captive adult bears over a 2-year period, we evaluated (i) associations between hair concen...

During the lifespans of most animals, reproductive maturity and mating activity are highly coordinated. In Drosophila melanogaster, for instance, male fertility increases with age, and older males are known to have a copulation advantage over young ones. The molecular and neural basis of this age-related disparity in mating behavior is unknown. Here, we show that the Or47b odorant receptor is r...

Citation: Santi D, Casarini L, Alviggi C and Simoni M (2018) Response: Commentary: Efficacy of FollicleStimulating Hormone (FSH) Alone, FSH + Luteinizing Hormone, Human Menopausal Gonadotropin or FSH + Human Chorionic Gonadotropin on Assisted Reproductive Technology Outcomes in the “Personalized” Medicine Era: A Meta-analysis. Front. Endocrinol. 9:113. doi: 10.3389/fendo.2018.00113 response: Co...

Physiological trade-offs arise because multiple processes compete for the same limiting resources. While competition for resources has been demonstrated between reproduction and immune function, the regulation of this competition remains unclear. Corticosterone (CORT) is a likely mediator due to its dual role in mobilizing energy stores throughout the body and regulating physiological responses...