نتایج جستجو برای: genetic infertility

تعداد نتایج: 646021  

Journal: :Genetics and molecular research : GMR 2015
X Y Li J Z Ye X P Ding X H Zhang T J Ma R Zhong H Y Ren

We examined the association between the methionine synthase reductase (MTRR A66G), methylenetetrahydrofolate reductase (MTHFR C677T and A1298C), and methionine synthase (MS A2756G) genotypes and non-obstructive male infertility in a Chinese population. This case-control study included 162 infertile Chinese patients with azoospermia (N = 100) or oligoasthenozoospermia (N = 62) and 120 fertile me...

Journal: :International journal of urology : official journal of the Japanese Urological Association 2009
John C Kefer Ashok Agarwal Edmund Sabanegh

Male infertility continues to be a clinical challenge of increasing significance. While male factors such as decreased semen quality are responsible for 25% of all infertility issues, the etiology of suboptimal semen quality is poorly understood. Many physiological, environmental, and genetic factors have been implicated, including oxidative stress. Oxidative stress is induced by reactive oxyge...

2001
Alberto Ferlin

and the most frequent genetic aetiology of severe testiculopathy. Carlo Foresta1, Enrico Moro and Alberto Ferlin Basic research in the field of the genetics of male infertility University of Padova, Department of Medical and Surgical has been of primary importance to drive the current clinical Sciences, Clinica Medica 3, Via Ospedale 105, 35128 Padova, Italy approach of the infertile patient, a...

2010
Esma Sarıkaya Tayfun Güngör Gülnur Özakşit Leyla Mollamahmutoğlu

This review presents the androgen receptor gene and its clinical importance in gynecology, oncology and infertility. A computerized literature search through Medline and PubMED was performed, applying the word " androgen receptor " cited between the years 1990 and 2009. The androgen receptor mediates androgen action, determining male sexual phenotypes and spermatogenesis. Constitutional mutatio...

Journal: :Human reproduction 2008
G Pennings G de Wert F Shenfield J Cohen B Tarlatzis P Devroey

Justice and access are among the most urgent questions for medically assisted reproduction. This paper analyses this question not only for people suffering from infertility, but also for people who need assistance to prevent the birth of a child with a specific genetic disorder. Based on the impact of not being able to have a child on the quality of life of a person, the position is defended th...

Journal: :Human reproduction 1998
L R Schover A J Thomas T Falcone M Attaran J Goldberg

Many couples undergoing in-vitro fertilization (IVF) are at a higher risk of having a child with a genetic abnormality. In a sample of 55 consecutive couples starting IVF, only 33% had no genetic risk factor. The most common genetic risks were advanced maternal age and possible abnormalities associated with severe male infertility. Despite education on these risks, 71% of couples had no interes...

احمدی مزجین, مینا, بهادری, محمدهادی, صالحی, زیور,

Introduction & Objective: Infertility affects 10-15% of couples worldwide, and male factors account for nearly half of all infertility cases. Evidence suggests that genetic variation in anti-oxidant enzymes could influence male infertility. Glutathione peroxidase 1 (GPx1) is an anti-oxidant selenoenzyme that detoxify peroxide radicals. GPx1 Pro198Leu polymorphism causes an aminoacid change from...

ژورنال: پژوهش در پزشکی 2017

Backgrond: Infertility affects 15% of couples and male factor infertility is involved in 50% of cases. One of the causes of infertility is Azoospermia that refers to the absence of sperm per ejaculation and almost affects 1% of the total men population. A comprehensive overview about the disease and its risk factors along with a better understanding of the diagnosis was performed and compreh...

2011
Malliya Gounder Palanichamy Ya-Ping Zhang

BACKGROUND & OBJECTIVES Recently, a significantly higher ratio of nucleotide changes in the mtDNA genes: COII, ATPase 6, ATPase 8, ND2, ND3, ND4, and ND5 was reported in spermatozoa from populations of infertile Indian men, compared suggesting that screening for mtDNA mutations could provide insight into the aetiology of male infertility. In this study, we examined the published data and found ...

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