being either underweight or overweight can affect a woman's fertility. irregular menstrual cycles, reduced spontaneous and assisted fertility and an increased risk of miscarriage are risks associated with obesity that are often overlooked. excessive weight and central distribution of body fat are both related to an increased risk of normogonadotrophic anovulation. weight loss can re-establish o...

BACKGROUND Polycystic ovary syndrome (PCOS) is one of the most common endocrinopathies affecting women in the reproductive age group, and is one of the most common causes of hyperandrogenic anovulatory infertility. The aromatase inhibitor, letrozole, has been used for induction of ovulation. The purpose of this study was to compare the effects of letrozole and clomiphene citrate in induction of...

The present study investigated whether kisspeptin-G protein-coupled receptor 54 (GPR54) signaling plays a role in mediating mating-induced ovulation in the musk shrew (Suncus murinus), a reflex ovulator. For this purpose, we cloned suncus Kiss1 and Gpr54 cDNA from the hypothalamus and found that suncus kisspeptin (sKp) consists of 29 amino acid residues (sKp-29). Injection of exogenous sKp-29 m...

The aim of this study was to compare the effects of Metformin and Acarbose accompanying Clomiphene on the successful ovulation induction in infertile women with polycystic ovary syndrome.This randomized double blind clinical trial study was performed on 60 women with polycystic ovary syndrome. Women were selected and randomly divided in two control and intervention groups. Intervention group re...

OBJECTIVE To determine whether the use of assisted reproductive technology (ART) is associated with an increase in chromosomal abnormalities, fetal malformations, or adverse pregnancy outcomes. METHODS A prospective database from a large multicenter investigation of singleton pregnancies, the First And Second Trimester Evaluation of Risk trial, was examined. Subjects were divided into 3 group...

Female mammals are classified into spontaneous and induced ovulators based on the mechanism eliciting ovulation. Ovulation in spontaneous species (e.g., human, sheep, cattle, horse, pigs, and most rodents) occurs at regular intervals and depends upon the circulating estradiol. However, in induced ovulators (e.g., rabbits, ferrets, cats, and camelids), ovulation is associated with coitus. In the...

Background: Currently clomiphene citrate is the first-line treatment to induce ovulation in women with polycystic ovarian syndrome (PCOS). Surgical therapy with laparoscopic ovarian drilling (LOD) may avoid or reduce the need for gonadotropins. Objective: To determine the effectiveness and safety of LOD compared with ovulation induction in subfertile women with clomiphene-resistant PCOS. Search...

background: in patients with anovulatory infertility the first choice of treatment for ovulation induction is an antiestrogen, most commonly clomiphene citrate (cc). however, 20-25% of the women are resistant to cc and do not ovulate perhaps due to antiestrogenic mechanism of the cc action, which involves long-lasting estrogen receptor (er) depletion. objective: the objective of the study was t...