Background: With the recent development of recombinant gonadotropins (FSH and LH), it has become possible to further adjust the stimulation protocol according to the expected needs of the patient. In this respect, the possible beneficial role of exogenous LH activity supplementation for stimulated ART cycles has received increasing attention. According to the two-cell, two- gonadotropin theory,...

PURPOSE The effects of reproductive hormones on ovarian cancer growth are not well understood. Here, we examined the effects of estrous cycle variation and specific reproductive hormones on ovarian cancer growth. EXPERIMENTAL DESIGN We investigated the role of reproductive hormones in ovarian cancer growth using both in vivo and in vitro models of tumor growth. RESULTS In vivo experiments u...

A 36-year-old transgender man (assigned female at birth) on exogenous testosterone therapy was found to have stage IIA ovarian endometrioid carcinoma, and underwent adjuvant chemotherapy. Diffuse androgen receptor expression in the tumor initiated a multidisciplinary discussion regarding safety of continuing as gender-affirming hormone therapy.

Reproduction is a fundamental aspect of life in all species. In a biological sense, it can be argued that reproduction is the essence of life. Passing on ones genes to the next generation and constantly optimizing the gene pool available for each individual and the species as a whole are vital for continuation and endurance of the species. Reproduction and hormones are intimately connected; thu...

Fluctuations in ovarian hormones across the menstrual cycle have long been considered a determinant of mood in women. The majority of studies, however, use menstrual cycle phase as proxy for hormone levels. We measured ovarian hormone levels directly in order to examine the relationship between daily hormone levels and mood in non-help-seeking women. Participants (n=19) provided daily informati...

This review is concerned with a general discussion of the actions of ovarian hormones, including relaxin, a polypeptide hormone, and estrogens and progestogens, which are two types of steroid hormones. Particular emphasis is placed on describing the sites of action and target organ responses induced by the two steroid hormones. A detailed description of estrogen activity in reproductive tract t...

Diets can alter the concentrations of circulating hormones such as insulin and IGF-I. Such responsive hormones are related directly to nutritional status and moreover, directly or indirectly, associated with reproductive function and fertility. Metabolic hormones are involved in follicular development, number and size of ovarian structures, circulating concentrations of steroid hormones, durati...

In this study, a mathematical model is developed for the production of the ovarian hormones (estradiol, progesterone, and inhibin) with input functions which represent blood levels of the gonadotropin hormones (luteinizing hormone and follicle stimulating hormone). A 9-dimensional system of linear, nonautonomous, ordinary differential equations tracks the capacities of 9 stages of the ovary to ...

Fertility in dairy cows has been declining for the past three decades. Genetic selection for increased milk production has been associated with changes in key metabolic hormones (growth hormone, insulin, IGF and leptin) that regulate metabolism by homoeostasis and homeorhesis. These metabolic hormones, particularly insulin, provide signals to the reproductive system so that regulation of ovaria...

This study was conducted to see the effects of Clomiphene Citrate on fertility hormones estrogen, progesterone, LH, FSH in patients with infertility associated polycystic ovary syndrome. For this fifty infertile PCOS who were given treatment clomiphene citrate (50–150mg/day for 5 days). Ovarian response ovulation monitored by transvaginal ultrasonography and serum levels FSH, estrogen also esti...