Follicle stimulating hormone (FSH) is a pituitary expressed glycoprotein hormone that regulates reproduction in mammals which composed of α and β-sub unit. The β-sub unit dictates its binding specificity with their receptor (FSHR). This study aimed to identify polymorphism of FSH β-sub unit and FSHR genes, and its effect to superovulatory response traits on superovulated cows. Study was done on...

The aim of this study was to evaluate the effects of progesterone and ovarian stimulation on the development and implantation rate of mouse embryos. Two-cell embryos were collected from superovulated mice and cultured in the presence of different concentrations of progesterone (0, 5, 10 and 20 ng/ml). Also other mice were rendered pregnant in unstimulated, unstimulated progesterone-injected, su...

OBJECTIVE To determine the efficacy and cost of a simplified superovulation regimen compared with traditional control ovarian hyperstimulation with gonadotropins (HMG). STUDY DESIGN This was a retrospective study in a university referral center with 99 infertile couples undergoing 225 treatment cycles. The outcome was compared to outcomes of previously published studies. The simplified supero...

BACKGROUND The aim of this randomized controlled trial was to compare the efficacy of extended letrozole regimen with clomiphene citrate in women with unexplained infertility undergoing superovulation and intrauterine insemination (IUI). METHODS Two hundred and fourteen patients with unexplained infertility were randomized into two equal groups using computer generated list and were treated b...

This study was designed to examine a single nucleotide polymorphism (SNP) in the HIF-3α gene in three hundred Changbaishan black cattle using PCR-restriction fragment length polymorphism to determine whether there is an association between this SNP and superovulation. The cloning and sequencing results indicate that the polymorphism is due to a point mutation at the 278-bp position in the HIF-3...

We previously demonstrated that intracytoplasmic sperm injection (ICSI), a type of assisted reproductive technology (ART), can induce epimutations and/or epimutant phenotypes in somatic tissues of adult mice produced by this method. In the present study, we compared the occurrence of epimutations in mice produced by natural conception, ICSI and somatic cell nuclear transfer. Surprisingly, we ob...

This research was intended to investigate the fetal origins of changed birth weight of the offspring born through assisted reproductive technology (ART). The association between hormone and lipid metabolism or body weight has been generally accepted, and as the basic and specific treatment in ART procedure, gonadotropin stimulation might have potential effects on intrauterine lipid metabolism. ...

Ninety-two dairy cows milking 23 I milk/day at the time of superovulation and belonging to the main domestic breeds were used in this study. Their mean age was 5.5 years and they had calved a mean 3.6 times. In 71 animals the previous calving interval was 369 days, and the calving-superovulation interval was 126 days. The cows were superovulated with 1 500 to 3 000 IU of PMSG (mean of 2 400 IU)...

In an effort to expand the use of ferrets as models for genetic disease, several experimental parameters that are required for successful genetic manipulation in this species were investigated. Optimum superovulation (19.3 +/- 0.6 oocytes and embryos per female) was achieved after injections of 100 iu equine chorionic gonadotrophin (eCG) and 150 iu human chorionic gonadotrophin (hCG). The ovula...