Aims and Objectives: This study aimed to assess compare follicle-stimulating hormone (FSH), luteinizing (LH), prolactin, thyroid-stimulating (TSH) levels in normal fertile females, patients with primary infertility, early pregnancy loss (EPL). Methods: Patients were divided into three groups of 25 each. Group I consisted II EPL, C females acted as the control group. Hormone different compared s...

Our working hypothesis was that synthesis and release of LH, but not FSH, were solely dependent on LHRH. Twenty ovariectomized (OVX) ewes were randomly assigned to one of five treatments (n = 4 per group). Ewes were administered a low (10 micrograms/kg) or high (100 micrograms/kg) dose of LHRH antagonist (LHRH-Ant) at 24-h intervals for 3 or 6 days. Control ewes received vehicle (5% mannitol) a...

Sequential samples of blood were drawn vi~ jugular catheters every 15 min for 24 h from four mares in each of five reproductive states: 1) intact anestrous mares in winter, 2) intact diestrous mares in summer, 3) intact estrous mares in summer, 4) ovariectomized mares in winter and 5) ovariectomized mares in summer. Estrous mares were sampled on d 4 or 5 of estrus and diestrous mares on d 10 or...

Testosterone, LH, FSH, PRL, and sex hormone binding globulin (SHBG) were measured in 72 male epileptic patients on chronic anticonvulsant drug regimes. Sexual activity was estimated and plasma anticonvulsants measured. Total testosterone (TT), LH, FSH, PRL, and SHBG were increased; free testosterone (FT) was decreased. Sexual activity appeared diminished particularly in relation to reduced FT.

FSH and luteinizing hormone (LH) are secreted constitutively or in pulses, respectively, from pituitary gonadotropes in many vertebrates, and regulate ovarian function. The molecular basis for this evolutionarily conserved gonadotropin-specific secretion pattern is not understood. Here, we show that the carboxyterminal heptapeptide in LH is a gonadotropin-sorting determinant in vivo that direct...

Spermatogenesis is regulated by the 2 pituitary gonadotropins, luteinizing hormone (LH) and follicle-stimulating hormone (FSH). This process is considered impossible without the absolute requirement of LH-stimulated testicular testosterone (T) production. The role of FSH remains unclear because men and mice with inactivating FSH receptor (FSHR) mutations are fertile. We revisited the role of FS...

objective: the objective of this study is to compare rates of pregnancy and ivf parameters in subjects who were stimulated with follicle stimulating hormone (fsh) plus either recombinant human luteinizing hormone (r-lh) or human menopausal gonadotropins (hmg), in long gonadotropin releasing hormone (gnrh) agonist ivf protocols. materials and methods: this is a cohort study of patients undergoin...

background: diabetic men have been claimed to have lower serum free testosterone (ft) concentrations than non-diabetic men. the aim of this study was to investigate if serum ft, luteinizing hormone (lh), and follicle stimulating hormone (fsh) concentrations are different in patients with type 2 diabetes mellitus compared with healthy men and to identify factors associated with low serum testost...

BACKGROUND In women with polycystic ovary syndrome (PCOS), despite a high prevalence of insulin resistance, hyperandrogenemia, and disturbances in the secretion of gonadotrophin, the principal causes of biochemical abnormalities and the best endocrine markers for PCOS have not been fully identified. SUBJECTS AND METHODS Serum levels of insulin, glucose, follicle-stimulating hormone (FSH), lut...