Results 51 to 60 of about 316,363 (294)

Heat Sensing Receptor TRPV1 Is a Mediator of Thermotaxis in Human Spermatozoa [PDF]

open access: yes, 2016
The molecular bases of sperm thermotaxis, the temperature-oriented cell motility, are currently under investigation. Thermal perception relies on a subclass of the transient receptor potential [TRP] channels, whose member TRPV1 is acknowledged as the ...
\u160abovi\u107, I   +9 more
core   +8 more sources

Single-cell analysis of developing and azoospermia human testicles reveals central role of Sertoli cells

open access: yesNature Communications, 2020
Non-obstructive azoospermia affects 1% of men. Here, authors perform single-cell transcriptomic analysis of human testicular cells from healthy donors and non-obstructive azoospermia patients and find that inhibition of Wnt signaling promotes the ...
LiangYu Zhao   +19 more
doaj   +1 more source

Nonobstruktif azospermi olgularında yeni yaklaşımlar [PDF]

open access: yes, 2019
Azospermi semende hiç sperm bulunamaması durumudur. Obstrüktif ve nonobstrüktif olmak üzere iki kategoriye ayrılır. Azospermi tanısı alan hastalardan elde edilen spermatozoayla, ilk gebelik ICSI (intrasitoplazmik sperm enjeksiyonu) işlemiyle 1993 ...
Özer, Mehmet Caner   +1 more
core   +1 more source

Mesenchymal stromal/stem cells and their exosomes for restoration of spermatogenesis in non-obstructive azoospermia: a systemic review

open access: yesStem cell research & therapeutics, 2021
Stem cells have been introduced as new promising therapeutic agents in treatment of degenerative diseases because of having high differentiation potential while maintaining the ability to self-replicate and retaining features of their source cells. Among
R. Zhankina   +10 more
semanticscholar   +1 more source

Analysis of copy number variation in men with non-obstructive azoospermia

open access: yesAndrology, 2022
Recent findings demonstrate that single nucleotide variants can cause non‐obstructive azoospermia (NOA). In contrast, copy number variants (CNVs) were only analysed in few studies in infertile men.
M. J. Wyrwoll   +18 more
semanticscholar   +1 more source

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

open access: yesEinstein (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  

Microdissection testicular sperm extraction causes spermatogenic alterations in the contralateral testis [PDF]

open access: yes, 2010
Testicular sperm extraction (TESE) associated with intracytoplasmic sperm injection has allowed many men presenting non-obstructive azoospermia to achieve fatherhood.
Azeredo-Oliveira, Maria Tercilia Vilela de   +4 more
core   +1 more source

Multi‐stage screening cell‐free seminal mRNAs to diagnose completion of meiosis and predict testicular sperm retrieval in men with non‐obstructive azoospermia

open access: yesAndrology, 2022
Differential diagnosis of men with subtypes of non‐obstructive azoospermia (NOA) is important for their treatment. Many genes are transcripted during meiosis.
Yuwan Dai   +5 more
semanticscholar   +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]

open access: yesMajallah-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   +5 more
doaj  

Search and identification of spermatozoa and spermatids in the ejaculate of non-obstructive azoospermic patients [PDF]

open access: yes, 2005
OBJECTIVE: To search and to identify spermatozoa and spermatids, present in the ejaculate of non-obstructive azoospermic patients. MATERIALS AND METHODS: 27 patients, aged between 18 and 48 years, with initial diagnosis compatible with non-obstructive ...
Buttignol, Marcia H.p. [UNIFESP]   +6 more
core   +3 more sources

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