Results 31 to 40 of about 14,478 (190)

Sperm retrieval techniques in azoospermic patients: PESA, MESA, TESA, TESE and MICROTESE [PDF]

Einstein (São Paulo), 2009
Azoospermia is defined as the absence of mature spermatozoa in semen analysis after centrifugation. The causes of azoospermia may be related to spermatogenesis defects and classified as non-obstructive azoospermia, or to the obstruction of the efferent ...
Marcelo Vieira, Sidney Glina
doaj  

Seminal plasma extracellular vesicles tRF-Val-AAC-010 can serve as a predictive factor of successful microdissection testicular sperm extraction in patients with non-obstructive azoospermia

Reproductive Biology and Endocrinology, 2022
Background There is a lack of biomarkers for distinguishing non-obstructive azoospermia (NOA) patients with successful sperm retrieval (Sp+) from those with failed sperm retrieval (Sp-).
Xiaoxiao Han, Lin Hao, Zhenduo Shi, Ying Li, Liang Wang, Zhenbei Li, Qiang Zhang, Fangfang Hu, Yijuan Cao, Kun Pang, Zuobin Zhu   +10 more
doaj   +1 more source

Analysis of Y Chromosome Microdeletions and Mutation in Exon7 of the STAG3 Gene in Iranian Infertile Men with Idiopathic Non-Obstructive Azoospermia [PDF]

Majallah-i dānishgāh-i ̒ulūm-i pizishkī-i Arāk, 2016
Background: Azoospermia is defined as the absence of sperm in the semen and is divided in two types; obstructive and non-obstructive azoospermia. Non-obstructive azoospermia include approximately 60% of azoospermia patients.
Sara Pouriamanesh, Ziba Kamalian, Pedram Shafaat, Mona Amin Bidokhti, Nasser Salsabili, Reza Mirfakhraei   +5 more
doaj  

Sperm recovery and IVF after testicular sperm extraction (TESE): effect of male diagnosis and use of off-site surgical centers on sperm recovery and IVF. [PDF]

PLoS ONE, 2013
Determine whether testicular sperm extractions and pregnancy outcomes are influenced by male and female infertility diagnoses, location of surgical center and time to cryopreservation.One hundred and thirty men undergoing testicular sperm extraction and ...
Kenan Omurtag, Amber Cooper, Arnold Bullock, Cathy Naughton, Valerie Ratts, Randall Odem, Susan E Lanzendorf   +6 more
doaj   +1 more source

Chromosomal abnormalities and Y chromosome microdeletions in infertile men with azoospermia and oligozoospermia in Eastern China

Journal of International Medical Research, 2020
Objective The objective was to investigate the frequency and type of chromosomal abnormalities and Y chromosome microdeletions in infertile men with azoospermia and oligozoospermia to ensure appropriate genetic counseling before assisted reproduction in ...
Jing Sha, Guiping Huang, Bei Zhang, Xia Wang, Zaochun Xu, Jingfang Zhai   +5 more
doaj   +1 more source

Copy number variations (CNVs) and karyotyping analysis in males with azoospermia and oligospermia

BMC Medical Genomics, 2023
Background Considering the essential roles that genetic factors play in azoospermia and oligospermia, this study aims to identify abnormal chromosomes using karyotyping and CNVs and elucidate the associated genes in patients.
Xing Xin, Peng Xu, Nan Wang, Yi Jiang, Jiaqiao Zhang, Shufang Li, Ying Zhu, Cong Zhang, Long Zhang, Hailong Huang, Ling Feng, Shaoshuai Wang   +11 more
doaj   +1 more source

Andrology laboratory technique for analysis of semen in men with azoospermia

Asian Journal of Andrology
Discovery of spermatozoa during the 17th century led to developing technologies for semen analysis in the early 1900s, and then, standard techniques were implemented during the 20th century.
Andrian Japari, Dharani Moorthy, Amarnath Rambhatla   +2 more
doaj   +1 more source

Management of the Infertile Male with Azoospermia

Düzce Tıp Fakültesi Dergisi, 2022
Azoospermia means the complete absence of spermatozoa upon examination of the semen. Azoospermia may result from a lack of spermatozoa production in the testicles, or from an inability of produced spermatozoa to reach the emitted semen.
Erdem Akbay, Mesut Tek
doaj   +1 more source

Ursolic Acid Alleviates Orchitis via Modulating Ferroptosis in Peritubular Myoid Cells of Testis

Animal Research and One Health, EarlyView.
Ursolic acid modulates key ferroptosis‐related pathways in the peritubular myoid cells of the testis in forest musk deer. ABSTRACT Chronic stress adversely affects reproductive health, increasing susceptibility to pathologies such as orchitis. Additionally, the maintenance of iron homeostasis is essential for preserving the function of the testicles ...
Yang Wang, Tianqi Jin, Zexin Chen, Ye Gong, Qimin Liu, Zifang Wu, Heran Cao, Yan Li, Yuyan Liu, Tianhao Yang, Zhihong Jiang, Wuzi Dong   +11 more
wiley   +1 more source

Preserved Spermatogenesis and Hormonal Function in Men Receiving a Pretomanid Regimen (BPaMZ) for Pulmonary Drug‐Resistant Tuberculosis

Clinical Pharmacology &Therapeutics, EarlyView.
Pretomanid is a component of the World Health Organization‐recommended treatment regimen for drug‐resistant tuberculosis in patients aged ≥ 14 years. While preclinical rodent studies identified testicular toxicity as a potential clinical liability at elevated doses, no corresponding effects were observed in nonhuman primates nor clinical hormone ...
Pauline Howell, Antonio Lombardi, William Brumskine, Lali Mikiashvili, Kim Boekelheide, Joanna Moreira, Alda Holsta, Matthew Betteridge, Lindsay Thompson, Angela Crook, Paul Bruinenberg, Maria Beumont, Eugene Sun, Francesca Conradie   +13 more
wiley   +1 more source