It is clear that sex hormones impact ventilation. While the effects of the menstrual cycle, pregnancy, testosterone, and progesterone on resting ventilation have been well documented, effects of sex hormones on the hypoxic (HVR) and hypercapnic ventilatory responses (HCVR) are inconclusive. In addition, in no study have systemic sex steroid hormone levels been measured. Age and sex differences ...

In this chapter, we intend to review our recent research in the context of contemporary research in the field of sex hormone biosynthesis and metabolism. Our findings have revealed novel aspects on the regulation of sex hormone metabolism and the metabolic control of cellular levels and effects of estrogens, androgens and neurosteroids. We will discuss our results in relation to current knowled...

Citation: Lebreton S, Mansourian S, Bigarreau J and Dekker T (2016) The Adipokinetic Hormone Receptor Modulates Sexual Behavior, Pheromone Perception and Pheromone Production in a Sex-Specific and Starvation-Dependent Manner in Drosophila melanogaster. Front. Ecol. Evol. 3:151. doi: 10.3389/fevo.2015.00151 The Adipokinetic Hormone Receptor Modulates Sexual Behavior, Pheromone Perception and Phe...

Slight differences in structure fundamentally change the effects, which can be corticoid, androgen, progestagen or estrogen. The latter 3 are called sex steroid hormones. Each type of sex steroid hormone is composed of a group of molecules, with slightly different effects. Sex steroid hormones are secreted by the ovary and by the adrenal gland. Oestrogens are the typical female hormone which wi...

Measuring hormone levels multiple times on the same individual across different life stages or treatments can facilitate our understanding of hormonal regulation of physiological and behavioral events. The conventional method of hormone measurement requires blood sampling, which is potentially lethal to small individuals. In fishes, there is an alternative non-invasive method of hormone measure...

Twenty four farmed great sturgeon, Huso huso (including 8 males and 16 females) over 6 years old were used to develop a method for determination of sex and maturity stages. Seasonal gonadal tissue and blood samples were collected from farmed great sturgeon for three years. The sex and stages of maturity were determined by histology and laparoscopy at the beginning and end of experiment. Plasma ...

OBJECTIVE Differences in disease outcomes between users and nonusers of hormone therapy (HT) and between users of estrogen therapy (ET) and users of estrogen + progesterone therapy (EPT) may relate to differences in serum hormone concentrations between these populations. In this study, we examined the response of serum hormone levels in healthy postmenopausal women after 1 year of HT. METHODS...

The hormone levels of auxin and gibberellin were studied in monoecious cucumber plants treated with growth regulators e.g. 2-chloroethylphosphonic acid (ethrel), gibberellic acid (GA3) and maleic hydrazide (MH). The studies were conducted at Vegetable Crops Research Programme, National Agricultural Research Centre Islamabad, Pakistan during 2003 and 2004. The greatest increase in female flower ...

PURPOSE It is unclear whether sex hormone profiles obtained in two consecutive months are consistent within women. Month-to-month consistency in daily, nadir, peak and mean hormone concentrations during the early follicular and luteal phases in recreationally active, young eumenorrheic women was prospectively examined. METHODS 60 healthy, non-smoking women who reported normal and consistent m...