We examined how these factors affect secondary offspring sex ratio in nondomesticated field voles, Microtus agrestis, while controlling for maternal age, testosterone level of the male and body condition of both the female and the male. We found that females with high preconception serum ...
have investigated the levels of testosterone in female athletes and how these impact on their physical performance. Their studies have shown that women with very high testosterone levels develop muscle mass and physical endurance more similar to that of men. They also...
Here, we show that testosterone (T)-dependent male attractiveness enhances female preference for males of a polygamous species, the Japanese quail. A significant positive correlation between female mating preference and circulating T in the male was observed. The cheek feathers of attractive males ...
However, we found higher yolk testosterone concentrations in eggs laid for young than older males. Because in young males genetic quality, parental experience, or willingness to invest into paternal care is likely to be low, high yolk testosterone level in their clutches may indicate that their ...
Steroid hormone-deprived sex reversal in cyp11a1 mutant XX tilapia experiences an ovary-like stage at molecular level Article Open access 16 September 2024 Improving the sexual activity and reproduction of female zebrafish with high testosterone levels Article Open access 15 February 2021 Male ge...
109 This has been hypothesized to stem from the positive immunomodulatory properties of sex hormones on cell-mediated immune responses and cardiovascular functions in female patients110,111 as well as the suppression of the anti-infective response by testosterone in male patients.112 Even an ongoing ...
To investigate the potential involvement of theca cells in the elevated testosterone levels of HFHS mice, we measured the thickness of the ovarian theca cell layers in antral follicles (Fig. 4C). We found that the thickness of the theca cell layer was significantly increased in HFHS mice ...
Throughout pregnancy, progesterone is maintained at high concentrations until the last few days of gestation, when the level falls to about 2 ng/mL (6.4 nmol/L) and to less than 1 ng/mL (3.2 nmol/L) immediately following parturition.113 A minimum progesterone concentration of 1 ng/mL (...
menopausal women. Some studies suggested that testosterone therapy has additional effects, which include increased bone mineral density (BMD) and decreased serum high-density lipoprotein (HDL) cholesterol. Furthermore, the long-term safety profile of testosterone therapy in post-menopausal women is ...
Deficits in spermatogenesis but not neurogenesis are alleviated by chronic testosterone therapy in R6/1 Huntington's disease mice. J Neuroendocrinol 2012; 24: 341–356. Article CAS PubMed Google Scholar Papalexi E, Persson A, Björkqvist M, Petersén A, Woodman B, Bates GP et al. ...