نتایج جستجو برای: gnrha long protocol

تعداد نتایج: 1006411  

Journal: :Human reproduction 1997
J P Vermeiden T J Roseboom A J Goverde C Suchartwatnachai E Schoute D D Braat R Schats

In the spontaneous menstrual cycle, the mid-cycle gonadotrophin surge causes maturation of the cumulus-oocyte complex, mucification of cumulus cells and expansion of the cumulus oophorus, resumption of meiosis and maturation of the cytoplasm of the oocyte. Whether this is an effect purely of luteinizing hormone (LH) or whether follicle stimulating hormone (FSH) also plays a role is unknown. The...

Journal: :Comparative biochemistry and physiology. Part A, Molecular & integrative physiology 2011
José M Guzmán Rosa Cal Angel García-López Olvido Chereguini Katherine Kight Mercedes Olmedo Carmen Sarasquete Constantinos C Mylonas José B Peleteiro Yonathan Zohar Evaristo L Mañanós

The Senegalese sole (Solea senegalensis) is a flatfish that exhibits severe reproductive dysfunctions in captivity. This study aimed at investigating the existence of a dopamine (DA) inhibitory tone on the reproductive axis of this species. Four groups of Senegalese sole breeders were treated with, saline (controls, CNT), the DA antagonist pimozide (PIM, 5 mg kg(-1)), gonadotropin-releasing hor...

Journal: :Human reproduction update 2011
P Humaidan S Kol E G Papanikolaou

BACKGROUND GnRH agonist (GnRHa) triggering has been shown to significantly reduce the occurrence of ovarian hyperstimulation syndrome (OHSS) compared with hCG triggering; however, initially a poor reproductive outcome was reported after GnRHa triggering, due to an apparently uncorrectable luteal phase deficiency. Therefore, the challenge has been to rescue the luteal phase. Studies now report a...

Journal: :Reproductive biomedicine online 2012
Peter Humaidan E G Papanikolaou D Kyrou B Alsbjerg N P Polyzos P Devroey Human M Fatemi

In stimulated IVF/intracytoplasmic sperm injection cycles, the luteal phase is disrupted, necessitating luteal-phase supplementation. The most plausible reason behind this is the ovarian multifollicular development obtained after ovarian stimulation, resulting in supraphysiological steroid concentrations and consecutive inhibition of LH secretion by the pituitary via negative feedback at the le...

Journal: :journal of reproduction and infertility 0

background: since increased lh in the early follicular phase in pcos patients especially in gnrh antagonist protocol could be associated with reduced oocyte quality and pregnancy and impared implantation. the current study was conducted to determine art outcomes in gnrh antagonist protocol (flexible) and long gnrh agonist protocol and compare them with adding gnrh antagonist in gnrh antagonist ...

Journal: :Nihon Naibunpi Gakkai zasshi 1988
M Iwashita Y Takeda S Sakamoto

GnRH stimulates LH release from pituitary cells, and this process is calcium dependent. On the other hand, phorbol ester, 12-0-tetradecanoylphorbol-13-acetate (TPA), a potent activator of calcium- and phospholipid-dependent protein kinase (protein kinase C), stimulates luteinizing hormone (LH) release from rat pituitary cells. To investigate the involvement of the calcium dependent process in L...

Journal: :International journal of clinical and experimental medicine 2013
Shien Zou Qiqi Long Shaofen Zhang Yi Han Wei Zhang

OBJECTIVE To evaluate the lowest effective dose of combined estrogen and progestogen (E(2)+P) add-back therapy during post-operative gonadotropin-releasing hormone agonist (GnRHa) treatment for endometriosis in Chinese women. STUDY DESIGN The study enrolled 81 patients aged 18 to 50 years with stage III or IV endometriosis, as diagnosed by surgery. All patients were given GnRHa 3.6 mg by subc...

Arash Samiei Azadeh Fazel Batool Rashidi Ensieh Shahrokh Tehraninejad, Kiandokht Kiani

Background To compare a flexible, multi-dose GnRH antagonist protocol with a long GnRH .agonist protocol in poor respo MaterialsAndMethods A randomized clinical trial of 70 poor responder patients (35 patients in GnRH antagonist protocol and 35 patients in long GnRH agonist protocol) was performed at Royan Institute, Tehran, Iran. Both groups were given a fixed dose of human menopausal gonadotr...

Journal: :Human reproduction 2009
M Youssef F van der Veen M van Wely

Recently GnRH antagonist protocols for the prevention of a premature LH surge were introduced, allowing final oocyte maturation to be triggered with a single bolus of a GnRH agonist (GnRHa). GnRHa is as effective as hCG for the induction of ovulation, and apart from the LH surge a FSH surge is also induced. Until recently, prospective randomized studies reported a poor clinical outcome when GnR...

2017
Hala H. Swaiss Nahla M. Khawaja Oraib H. Farahid Anwar M. Batieha Kamel M. Ajlouni

OBJECTIVES To study the effect of gonadotropin-releasing hormone analogue (GnRHa) on final adult height (FAH) among Jordanian children with central precocious puberty (CPP). Methods: It is a retrospective historical cohort study. We assessed the FAH and height gain in 43 children with CPP (39 females and 4 males) who received GnRHa and 13 children with CPP (11 females and 2 males) who did not r...

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