نتایج جستجو برای: azf region

تعداد نتایج: 538164  

Journal: :Genetics and molecular research : GMR 2015
L X Li H Y Dai X P Ding Y P Zhang X H Zhang H Y Ren Z Y Chen

We investigated azoospermia region microdeletions in male infertility patients with Klinefelter syndrome (KFS), as well as the association between azoospermia symptoms in patients with KFS and Y chromosome microdeletion polymorphisms. A total of 111 cases with male infertility confirmed to have KFS (47, XXY) and 94 fertile men were included in this study. Peripheral blood was drawn and DNA was ...

اعتمادی, کتایون, امیری, ایرج,

Introduction & Objective: Male factor is the major cause of infertility in 20% of cases (WHO). There are known etiologies for 70% of cases .However, 30% of infertility cases are of idiopathic origin. The Y chromosome and micro deletion of the long arm of the Y chromosome (Yq) in three regions (AZFa, AZFb ,AZFc ) are associated with spermatogenic failure and is a major etiology for oligo and a...

Journal: :The Journal of General Physiology 1997
John J. Enyeart Juan Carlos Gomora Lin Xu Judith A. Enyeart

Bovine adrenal zona fasciculata (AZF) cells express a noninactivating K+ current (IAC) that is inhibited by adrenocorticotropic hormone and angiotensin II at subnanomolar concentrations. Since IAC appears to set the membrane potential of AZF cells, these channels may function critically in coupling peptide receptors to membrane depolarization, Ca2+ entry, and cortisol secretion. IAC channel act...

Objective Y chromosome deletions (YCDs) in azoospermia factor (AZF) region are associated with abnormal spermatogenesis and may lead to azoospermia or severe oligozoospermia. Assisted reproductive technologies (ART) by intracytoplasmic sperm injection (ICSI) and testicular sperm extraction (TESE) are commonly required for infertility management of patients carrying YCDs. The aim of this study w...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید چمران اهواز 1389

ناباروری مشکلی است که تقریبا 15% زوج ها را درگیر می کند و از این میان سهم مردان در ناباروری حدود 50% می باشد. میکرودلیشن بازوی بلند کروموزوم y (11.23yq )، یکی از رایج ترین عوامل ژنتیک مولکولی در مردان نابارور آزواسپرم یا الیگواسپرم شدید ایدیوپاتیک است. سه لوکوس مختلف دخیل در اسپرم زایی بر روی کروموزوم y به نام فاکتورهای آزواسپرمی (c,b,azfa) تعیین شده است. حذف ها در این نواحی سبب حذف یک یا تعداد...

Journal: :Reports of biochemistry & molecular biology 2017
Zeeba Kamaliyan Sara Pouriamanesh Mona Amin-Beidokhti Amir Rezagholizadeh Reza Mirfakhraie

BACKGROUND The PIWI-interacting RNA (piRNA) pathway has an essential role in transposon silencing, meiosis progression, spermatogenesis, and germline maintenance. HIWI genes are critical for piRNA biogenesis and function. Therefore, polymorphisms in HIWI genes contribute to spermatogenesis defects and can be considered as risk factors for male infertility. The aim of the present study was to in...

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