Results 101 to 110 of about 149 (149)

Neuroendocrine mechanisms responsible for elevated gonadotrophin‐releasing hormone and luteinising hormone pulses in polycystic ovary syndrome

Journal of Neuroendocrinology, EarlyView.
Abstract Polycystic ovary syndrome (PCOS) is the leading cause of anovulatory infertility in premenopausal individuals with ovaries worldwide. Despite the diagnostic features of anovulation, ovarian cysts, and hyperandrogenemia, which indicate that ovary dysfunction is the cause of the syndrome, changes in central neuroendocrine circuits are a ...
Aleisha M. Moore
wiley   +1 more source

Increase of astrocyte apposition on GnRH neurons in early puberty onset induced by high fat diet

Journal of Neuroendocrinology, EarlyView.
This study suggests that the HFD‐induced anticipation of puberty seems to be, at least partially, mediated by an increase in the interaction between astrocytes and GnRH neurons in both the MPOA and ARC/EM, which may increase the excitability of GnRH neurons.
Isabelle Rodrigues‐Santos, Raoni Conceição Dos‐Santos, Aline de Jesus, Rafael Appel Flores, Roberta Ribeiro Costa Rosales, Izabela Facco Caliman, Janete A. Anselmo‐Franci, José Antunes‐Rodrigues, Lucila Leico K. Elias   +8 more
wiley   +1 more source

Photostimulation increases food intake, agouti‐related protein (AGRP) and type II iodothyronine deiodinase (DIO2) gene expression in the medio‐basal hypothalamus of Gambel's White‐crowned Sparrow

Journal of Neuroendocrinology, EarlyView.
Abstract Before migration, birds express hyperphagia leading to deposition of fuel in support of long‐distance flight. Long days in spring stimulate a photoperiodic neuroendocrine cascade leading to heightened food intake. A major component of the response of the reproductive system to increased daylength in birds is the local conversion of thyroxine ...
Timothy Boswell, Sarena K. Olson, George E. Bentley, Nicole Perfito, Marilyn Ramenofsky   +4 more
wiley   +1 more source

Vascular health and exercise in females throughout the lifespan: Exploring puberty, pregnancy and menopause

Experimental Physiology, EarlyView.
Abstract This narrative review highlights the impact of exercise on vascular health in females over the lifespan with an emphasis on puberty, pregnancy and menopause. These events encompass substantial changes in sex hormone levels, particularly oestrogens and progesterone.
Kathleen B. Miller, M. Erin Moir, Brandon G. Fico   +2 more
wiley   +1 more source

The therapeutic role of exercise training during menopause for reducing vascular disease

Experimental Physiology, EarlyView.
Abstract Menopause marks a major milestone in female reproductive ageing. It is characterized by the cessation of ovarian function and a concomitant decline in hormones such as oestradiol. Subsequently, females undergoing menopausal transition experience a progressive increase in cardiovascular and cerebrovascular disease risk.
Conan L. H. Shing, Bert Bond, Kerrie L. Moreau, Jeff S. Coombes, Jenna L. Taylor   +4 more
wiley   +1 more source

Comparing 17β‐estradiol and progesterone concentrations in young, physically active females: Insights from plasma versus serum analysis

Experimental Physiology, EarlyView.
Abstract Serum measurements of 17β‐estradiol and progesterone are widely used to verify menstrual cycle status and confirm contraceptive use, often through commercially available immunoassay kits. However, no studies have investigated whether blood collection tube chemistries influence hormone concentrations in young females, despite assays permitting ...
Samantha N. Rowland, Mariasole Da Boit, Rachel Tan, Liam M. Heaney, Stephen J. Bailey   +4 more
wiley   +1 more source

Association between salivary and blood hormone concentrations using an automated electrochemiluminescence immunoassay technique: Challenges and pitfalls

Experimental Physiology, EarlyView.
Abstract Blood‐based measures are considered the gold standard for evaluating steroid hormone concentrations, particularly for confirmation of hormone profiles in female‐specific research. However, saliva sampling offers several advantages: it can be collected independently by participants, is less invasive and might be a more time‐ and cost‐effective ...
Natalie J. Hardaker, Patria A. Hume, Stacy T. Sims, Tom Stewart, Doug A. King   +4 more
wiley   +1 more source

Bioavailable testosterone and androgen receptor activation, but not total testosterone, are associated with muscle mass and strength in females

The Journal of Physiology, EarlyView.
Abstract figure legend Twenty‐seven pre‐menopausal, untrained females performed a 12‐week resistance training programme to explore the association between androgen concentrations, androgen receptor signalling and skeletal muscle size and strength. Total testosterone was not associated with muscle mass or strength, nor with resistance training‐induced ...
Sarah E. Alexander, Briana Gatto, Olivia E. Knowles, Ross M. Williams, Kinga N. Fiebig, Paul Jansons, Paul A. Della Gatta, Andrew Garnham, Nir Eynon, Glenn D. Wadley, Brad Aisbett, Danielle Hiam, Séverine Lamon   +12 more
wiley   +1 more source

Regional cerebral perfusion and sympathetic activation during exercise in hypoxia and hypercapnia: preliminary insight into ‘Cushing's mechanism’

The Journal of Physiology, EarlyView.
Abstract figure legend During handgrip exercise in hypoxia, brain perfusion is suboptimal and muscle sympathetic nerve activity is potentiated (left panel). During the exercise in hypercapnia, brain perfusion is supraoptimal and muscle sympathetic nerve activity is suppressed (right panel). These observations support the notion that Cushing's mechanism
Hsuan‐Yu Wan, Kanokwan Bunsawat, Catherine L. Jarrett, Katherine L. Shields, Angela V. Bisconti, Joshua C. Weavil, Markus Amann   +6 more
wiley   +1 more source

The contribution of age and sex hormones to female neuromuscular function across the adult lifespan

The Journal of Physiology, EarlyView.
Abstract figure legend This study mapped the age‐related trajectory of neuromuscular deterioration in 88 healthy females aged 18–80 years old. An accelerated reduction in neuromuscular function, primarily of peripheral muscular origin, coincided with the age of menopause onset.
Steven J. O'Bryan, Annabel Critchlow, Cas J. Fuchs, Danielle Hiam, Séverine Lamon   +4 more
wiley   +1 more source