نتایج جستجو برای: Gonadotrophin

تعداد نتایج: 2866  

Journal: :Reviews of reproduction 1999
M Nishihara Y Takeuchi T Tanaka Y Mori

The hypothalamic gonadotrophin-releasing hormone (GnRH) pulse generator governs intermittent discharges of GnRH into the pituitary portal circulation and, consequently, modulates the pulsatile pattern of gonadotrophin secretion. Electrophysiological correlates of pulsatile gonadotrophin secretion have been demonstrated in the mediobasal hypothalamus of monkeys, rats and goats by recording multi...

ارجمند, ندا , خزاعی‌پور, زهرا , غفارنژاد, مرضیه ,

Background: Polycystic ovary syndrome (PCOS) is a common cause of ovulation insufficiency and then infertility. Therapeutic options to induce ovulation in anovulatory PCOS patients are clomiphene citrate, metformin, tamoxifen, dopamine agonists (bromocriptin), Gonadotrophin and laparoscopic ovarian electrocautery (LOE). Gonadotrophin and LOE are important options in anovulatory clomiphene citra...

Journal: :Reviews of reproduction 1996
M Markkula I Huhtaniemi

A variety of transgenic animal models has been developed to elucidate in vivo the functions of gonadotrophin genes. Some of these have focused on regulatory aspects through expression of gonadotrophin subunit promoter-driven reporter genes. Others have been carried out by overexpression or targeted disruption of specific gonadotrophin subunit genes, or by eliminating pituitary gonadotroph cells...

Journal: :journal of reproduction and infertility 0

background: we performed this study to investigate and compare the effects of letrozole and gonadotrophins versus clomiphene citrate and gonadotrophins in women undergoing superovulation for intrauterine insemination (iui). methods: we performed this prospective cohort study at australian concept and fertility centre, karachi pakistan. women younger than 40 years of age with patent fallopian tu...

Journal: :BMJ 1989
E M Smith F W Anthony S C Gadd G M Masson

OBJECTIVE To evaluate the effect of support with human chorionic gonadotrophin in the luteal phase in women taking part in an in vitro fertilisation programme after buserelin and human menopausal gonadotrophin were used to hyperstimulate their ovaries. DESIGN Controlled group comparison. SETTING Outpatient department of a private hospital. PATIENTS 115 Women with indications for in vitro ...

Journal: :Human reproduction 1998
W M Buckett B Bentick R W Shaw

From 1985-1987, a total of 34 couples undergoing superovulation for a single in-vitro fertilization (IVF) cycle with clomiphene citrate and purified follicle stimulating hormone (FSH) or human menopausal gonadotrophin (HMG) were randomly allocated doses of intra-nasal buserelin to induce an endogenous gonadotrophin surge, prior to oocyte collection. The doses ranged from a single 25 microg dose...

Journal: :Archives of disease in childhood 1984
P G Tuohy R C Franklin

A boy who had previously had a cleft lip and palate repaired and bilateral orchiopexies presented at 16 years of age with delayed puberty. Isolated gonadotrophin deficiency and testicular hyporesponsiveness to human chorionic gonadotrophin were found. The possibility of bilateral cryptorchidism due to gonadotrophin deficiency should be considered in boys with either cleft lip or palate, or both.

Journal: :Human reproduction 1998
Y Nagata K Honjou M Sonoda I Makino R Tamura T Kawarabayashi

In previous studies, patients with severe peri-ovarian adhesions have been found to show low pregnancy rates and a poor response to gonadotrophin stimulation during in-vitro fertilization (IVF) treatment. The purpose of this retrospective pharmacokinetic study was to assess the diffusion of exogenous human chorionic gonadotrophin (HCG) in patients with peri-ovarian adhesions by examining the co...

Journal: :British medical journal 1987
S H Okamoto D L Healy L M Morrow P A Rogers A O Trounson E C Wood

A study was conducted aimed at establishing a range of plasma concentrations of the beta subunit of human chorionic gonadotrophin that might predict ectopic pregnancy after in vitro fertilisation and embryo transfer. From May 1984 to February 1986, 161 consecutive pregnancies at the Monash University in vitro fertilisation unit were analysed by determining plasma beta human chorionic gonadotrop...

Journal: :The Biochemical journal 1974
T A Bramley

Treatment of immature mice with both follicle-stimulating hormone and human chorionic gonadotrophin in vivo resulted in large increases in the specific activities of ovarian alkaline phosphatase and alkaline nucleotidase. The specific activities of other ovarian enzymes studied were not altered by gonadotrophin treatment. A simultaneous change in the Michaelis constant of ovarian alkaline phosp...

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