Results 41 to 50 of about 10,513,345 (205)

Multiple Testicular Sampling in Non-Obstructive Azoospermia-Is it Necessary? [PDF]

Journal of Urology, 1998
Spermatogenesis may be focal in non-obstructive azoospermia. The present study was conducted to determine whether the performance of multiple, rather than a single testicular sample contributes to obtaining spermatozoa in amounts sufficient for fertilization and cryopreservation in non-obstructive, azoospermic patients.
R, Hauser, A, Botchan, A, Amit, D, Ben Yosef, R, Gamzu, G, Paz, J B, Lessing, L, Yogev, H, Yavetz   +8 more
openaire   +2 more sources

Sperm retrieval techniques for assisted reproduction

International Brazilian Journal of Urology, 2011
Different surgical methods such as PESA, MESA, TESA, TESE and micro-TESE have been developed to retrieve spermatozoa from either the epididymis or the testis according to the type of azoospermia, i.e., obstructive or non-obstructive.
Sandro C. Esteves, Ricardo Miyaoka, Ashok Agarwal   +2 more
doaj   +1 more source

Chromosomal abnormalities in patients with oligozoospermia and non-obstructive azoospermia [PDF]

Journal of Assisted Reproduction and Genetics, 2013
To assess the frequency and types of chromosomal abnormalities in 204 Ukrainian patients with non-obstructive azoospermia and oligozoospermia and 87 men with normozoospermia.Cytogenetic studies were performed on peripheral blood lymphocyte samples of 164 men with oligozoospermia, 40 men with non-obstructive azoospermia and 87 men with normozoospermia ...
Larysa Y, Pylyp, Lyudmyla O, Spinenko, Natalia V, Verhoglyad, Valery D, Zukin   +3 more
openaire   +2 more sources

WFS1 Deficiency Impairs PIAS4‐Associated SUMOylation and Increases Ubiquitin‐Mediated Spermatogenesis‐Related Protein Degradation Leading to Testicular Male Infertility

Advanced Science, EarlyView.
The findings establish a critical role for WFS1 in human male fertility. Mechanistically, WFS1 interacts with PIAS4 to promote the SUMOylation of key spermatogenesis‐associated proteins, which in turn competitively inhibits their K48‐linked ubiquitin‐mediated degradation during spermatogenesis.
Yunchuan Tian, Guicheng Zhao, Xiang Wang, Xinyao Tang, Gan Shen, Tiechao Ruan, Chuan Jiang, Shikun Zhao, Jincheng Zhang, Xinyue Cui, Liangchai Zhuo, Jun Ma, Yihong Yang, Tingting Lin, Ying Shen   +14 more
wiley   +1 more source

Electropherogram showing single-nucleotide mutation of WT1 in patients with non-obstructive azoospermia.

, 2013
Electropherogram showing single-nucleotide mutation of WT1 in patients with non-obstructive azoospermia.
Jun Zhang (48506), Ri Na Sha (440752), Guang Qing Sun (440754), Fei Gao (29262), Yu Ren (428662), Zhi Ming Cai (440758), Tao Jiang (28401), Yao Ting Gui (440760), Ya Qing Wang (440749), Jian Wang (5901), Vicki Huff (440759), Jun Xie (53987), Jun Wang (5906), Xiao Liu (65413), Zhi Mao Jiang (440757), Min Chen (147733), Ze Song Li (440748), Hong Gang Li (440755), Xiao Na Wang (440747), Yan Bo Wang (440751), Cheng Liang Xiong (440756), Jian Xiu Hao (440750), Yi Huang (112882), Jing Chu Hu (440753)   +23 more
core   +1 more source

Deleterious mutation in SYCE1 is associated with non-obstructive azoospermia [PDF]

Journal of Assisted Reproduction and Genetics, 2015
To determine the molecular basis of familial, autosomal-recessive, non-obstructive azoospermia in a consanguineous Iranian Jewish family.We investigated the genetic cause of non-obstructive azoospermia in two affected siblings from a consanguineous family.
Esther, Maor-Sagie, Yuval, Cinnamon, Barak, Yaacov, Avraham, Shaag, Hannoch, Goldsmidt, Shamir, Zenvirt, Neri, Laufer, Carmelit, Richler, Ayala, Frumkin   +8 more
openaire   +2 more sources

The poly(A)-binding protein genes, EPAB, PABPC1, and PABPC3 are differentially expressed in infertile men with non-obstructive azoospermia

, 2016
Purpose Azoospermia is one of the major causes of male infertility and is basically classified into obstructive (OA) and non-obstructive azoospermia (NOA). The molecular background of NOA still largely remains elusive.
Bassorgun, Ibrahim C., Akkoyunlu, Gokhan, Sozen, Berna, Uysal, Fatma, Usta, Mustafa F., Ozturk, Saffet, Demir, Necdet   +6 more
core   +1 more source

Role of testicular fine‐needle aspiration in the modern male reproductive urologist′s practice

UroPrecision, EarlyView.
Abstract Background Azoospermia affects 10%–15% of infertile men, with non‐obstructive azoospermia (NOA) most often managed by microdissection testicular sperm extraction (mTESE). Despite AUA/ASRM guidelines recommending mTESE, some urologists employ testicular fine‐needle aspiration (TFNA) mapping as a diagnostic adjunct.
Parth Joshi, Jordan Kassab, Vivek Aslot, Richard Schoor   +3 more
wiley   +1 more source

Synaptic defects at meiosis I and non-obstructive azoospermia [PDF]

Human Reproduction, 2006
Recent advances in immunofluorescence methodology have made it possible to directly monitor protein localization patterns in germ cells undergoing meiosis. We used this technology to examine the early stages of meiosis in testicular material obtained from men presenting for evaluation at infertility clinics.Specifically, we compared meiotic progression,
TOPPING, Daniel, BROWN, Petrice, JUDIS, Luann, SCHWARTZ, Stuart, SEFTEL, Allen, THOMAS, Anthony, HASSOLD, Terry   +6 more
openaire   +3 more sources

Cut-off Value of Testosterone and FSH Level In Patient With Azoospermia [PDF]

, 2016
Follicle-stimulating hormone(FSH) and Testosterone are important for spermatogenesis. Increased serum FSH and decreased testosterone are related to abnormal spermatogenesis.
Birowo, Ponco, Basukarno, Ari, Rasyid, Nur   +2 more
core   +1 more source