Profiles of LH and FSH levels and pituitary LH responses to exogenous luteinizing hormone releasing hormone (LHRH) have been characterized in rams, castrated rams (wethers), and wethers implanted with testosterone. Rams were castrated when adult, and, at the time of castration, two groups of wethers were implanted with either four or eight testosterone capsules. Rams showed random pulses of LH ...

OBJECTIVE To analyse the usefulness of plasma anti-mullerian hormone (AMH) measurement as a tool for assessing ovarian reserve in a general infertility population. MATERIALS AND METHODS Plasma AMH levels were analysed in 238 women aged 18-46 years during day 3-5 of their menstrual cycle. All 238 patients had follicle stimulating hormone (FSH) levels less than 10 i.u./L, suggesting normal ovar...

BACKGROUND Any abnormality of menstrual cycle makes women worried and requires proper evaluation. Oligomenorhea is one of the indicators of Polycystic Disease of the Ovary (PCO) which is associated not only with reproductive failure but it also has metabolic and cardiovascular complications. The recent study was conducted to find out the role of Pituitary Gonadotropins in the diagnosis. After d...

Abstract Background Premature ovarian insufficiency (POI) is characterized by impairment of function on a continuum before the age 40 years. POI affected multiple factors. Considering new insights from recent gut microbiome studies, this study aimed to investigate relationship between microbial community structure and POI. Methods Subjects were recruited at Shenzhen Maternity & Child Health...

OBJECTIVE The purpose of this study is to evaluate factors predictive of outcomes in women with highest follicle-stimulating hormone (FSH) levels ≥ 12 IU/L on basal testing, undergoing in vitro fertilization (IVF). METHODS A prospective cohort study was conducted at Stanford University Hospital in the Reproductive Endocrinology and Infertility Center for 12 months. Women age 21 to 43 undergoi...

BACKGROUND Women who carry the fragile X mental retardation (FMR1) premutation are at risk for fragile X-associated primary ovarian insufficiency. Past studies have shown that carriers who are still cycling have increased levels FSH compared with non-carriers. As anti-Mullerian hormone (AMH) has been shown as an excellent marker of ovarian decline, we examined AMH levels among premutation carri...

OBJECTIVE To examine whether obesity and insulin resistance have an independent effect on the gonadotropin, estradiol, and inhibin B serum levels and follicle count in the early follicular phase of fertile women with a wide range of BMI and without signs of hyperandrogenism. RESEARCH METHODS AND PROCEDURES Twenty-two overweight and obese (BMI > or =25.0 kg/m(2)) women and 10 normal-weight (BM...

BACKGROUND Follicular stimulating hormone (FSH) is a glycoprotein and widely used for the treatment of infertility; FSH action is mediated by FSH receptor (FSHR), SNPs of which determine the ovarian response. Two polymorphisms of the FSHR gene were identified, which caused a change of threonine (T) to alanine (A) at position 307 and asparagine (N) to serine(S) at position 680. Both polymorphic ...

BACKGROUND Although an increase of bone turnover has been documented at the time of menopause, the subsequent abnormalities of bone resorption and formation in the elder women have not been investigated. AIM To assess bone turnover among different YSM (years since menopause) groups of postmenopausal women. SETTINGS AND DESIGN A case control study in a tertiary care hospital. MATERIALS AND...