In this paper, a retrospective cohort study was conducted to the high ovarian responders in GnRH-antagonist protocols of IVF/ICSI cycles. The purpose of the study is to investigate whether dual triggering of final oocyte maturation with a combination of gonadotropin-releasing hormone (GnRH) agonist and human chorionic gonadotropin (HCG) can improve the clinical outcome compared with traditional...

background: the breeding performance is an important parameter to evaluate the breeding success in captive condition. the optimum hormone dose in combination with latency period is desirable for getting best breeding performance in fish. objectives: the objective of the study was to find the spawning latency period in the hormonal induced reproduction of snow trout with two inducers (ovaprim an...

the aim of this study was to evaluate the outcomes of adding low-dose hcg (human chorionic gonadotropin), as an lh active supplement, to a gnrh antagonist protocol in patients undergoing assisted reproduction techniques. in this parallel-group randomized clinical trial, 137 infertile female outpatients aged 20 - 39 years were randomized into two groups: hcg group and non-hcg group. all patients...

BACKGROUND To compare the outcome of IVF cycles in women receiving controlled ovarian stimulation with recFSH or recFSH plus low dose hCG. METHODS A retrospective case control study, performed at a private practice affiliated with an academic institute. Patients were infertile women who were treated with IVF/ICSI and controlled ovarian stimulation in a long GnRH agonist protocol using either ...

In Rhinella arenarum spermiation occurs as a consequence of LH/FSH increase during the amplexus or by a single dose of hCG, among other gonadotropins. The present study employs an in vitro system to study the mechanism of action of hCG in the spermiation of R. arenarum. Testicular fragments were incubated for 2h at 28°C in the presence or absence of 20IU hCG with or without different PKA/PKC in...

Background: Deep suppression of LH in GnRH antagonist cycles may have detrimental effect on reproductive out come. It was hypnotized that adding LH activity via the administration of low dose HCG in late follicular phase shortened the duration of stimulation, decreased consumption of gonadotropin and increased estrogen levels. This study was designed to evaluate the effect of adding low dose HC...

CONTEXT AND OBJECTIVE In men with infertility secondary to gonadotropin deficiency, treatment with relatively high dosages of human chorionic gonadotropin (hCG) stimulates intratesticular testosterone (IT-T) biosynthesis and spermatogenesis. Previously we found that lower dosages of hCG stimulated IT-T to normal. However, the minimal dose of hCG needed to stimulate IT-T and the dose-response re...

This study aimed to prove that giving hCG injection at the time of artificial insemination and five days afterartificial in dairy cows with repeat breeder can cause pregnancy. employed 30 dairycows breeder. All samples were divided into two treatments, P1 using adose 100 IU given intramuscularly P2 a dose of100 after insemination. The results analyzed Chi-Square test. Analysis showed all treatm...

Evidence is presented that the regulation of the cytochrome P-450(C17 alpha) of the steroid-17 alpha-monooxygenase and of the cytochrome P-450(cscc) of the cholesterol-monooxygenase by human choriogonadotropin (hCG) in vivo is mediated by differential mechanisms in the adult rat testis. An initial down-regulation of the cytochrome P-450(C17 alpha) but not of the P-450(cscc) can be demonstrated....

Severe ovarian hyperstimulation syndrome (OHSS) is a rare but potentially fatal condition associated with conventional IVF treatment. It is found predominantly in women with polycystic ovaries who have an exaggerated response to exogenous FSH, leading to a large number of follicles and an overproduction of vascular endothelial growth factor with resultant excessive increases in vascular permeab...