نتایج جستجو برای: idiopathic infertility

تعداد نتایج: 97664  

Journal: :Human molecular genetics 2014
Marcy E Richardson Andreas Bleiziffer Frank Tüttelmann Jörg Gromoll Miles F Wilkinson

The X-linked RHOX cluster encodes a set of homeobox genes that are selectively expressed in the reproductive tract. Members of the RHOX cluster regulate target genes important for spermatogenesis promote male fertility in mice. Studies show that demethylating agents strongly upregulate the expression of mouse Rhox genes, suggesting that they are regulated by DNA methylation. However, whether th...

2011
Mohammad K Moslemi Samaneh Tavanbakhsh

OBJECTIVES Infertility is an important medical and social problem that has an impact on well-being. A significant development in the last 10 years in the study of human infertility has been the discovery that oxidative sperm DNA damage has a critical role in the etiology of poor semen quality and male infertility. Selenium (Se) is an essential element for normal testicular development, spermato...

2014
Hong-Jun Li

guidelines are not ‘upgraded’ following panel consensus. This statement further confused me. After discussing and analyzing this information with some andrological experts in China and abroad, I decided to express my perspectives on this problem. The estrogen receptor modulator, tamoxifen, when combined with testosterone undecanoate (TU), was shown to be an effective treatment choice for male i...

2015
A. M. Punab M. Grigorova M. Punab M. Adler T. Kuura O. Poolamets V. Vihljajev B. Žilaitienė J. Erenpreiss V. Matulevičius M. Laan

SUMMARY Luteinizing hormone (LH) is a pituitary heterodimeric glycoprotein essential in male and female reproduction. Its functional poly-morphic variant (V-LH) is determined by two missense mutations (rs1800447, A/G, Trp8Arg; rs34349826, A/G, Ile15Thr) in the LH b-subunit encoding gene (LHB; 19q13.3; 1111 bp; 3 exons). Among women, V-LH has been associated with higher circulating LH and reduce...

Journal: :Andrology 2016
L Micheli D Cerretani G Collodel A Menchiari L Moltoni A I Fiaschi E Moretti

UNLABELLED This study was aimed to assess the antioxidant enzymatic and non-enzymatic compounds in semen of infertile men. Seventy-four infertile patients were grouped according to their clinical diagnosis: genitourinary infection, varicocele, idiopathic infertility. Semen samples of fertile men represent the control. Semen characteristics were evaluated by light and transmission electron micro...

Journal: :Reproductive sciences 2011
Mohammad Reza Safarinejad Nayyer Shafiei Shiva Safarinejad

OBJECTIVE The human methylenetetrahydrofolate reductase (MTHFR) gene plays a crucial role in folate metabolism. Data regarding the influence of MTHFR gene polymorphisms on male fertility status are scarce and conflicting. We determined associations between 3 MTHFR gene polymorphisms (C677T, A1298C, and G1793A), serum folate, and total homocysteine (tHcy) levels, with male fertility status and s...

2016
Hironmoy Sarkar Satyapal Arya Umesh Rai Subeer S. Majumdar

Testis of Hemidactylus flaviviridis, commonly known as Indian wall lizard, displays a lack of cellular and metabolic activity in regressed phase of testis during non-breeding season of the year. Retracted Sertoli cells (Sc), fibroid myoid cells and pre-meiotic resting spermatogonia are observed in such testis. This situation is akin to certain forms of infertility in men where hormone supplemen...

2017
Ali Farid Laila Farid Yasmin Ali Mohamed Ali

Introduction: Idiopathic premature ovarian failure is defined as cessation of menstruation before the expected age of menopause (40 years) without detectable cause. the definitive line of treatment is egg donation which is not accepted in many countries. Bee venom is a miracle it has a unique composition so the aim of this work is to use ultrasound guided intra ovarian injection of Bee venom as...

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