Results 21 to 30 of about 28,616 (239)

Bilharziasis and Azoospermia [PDF]

open access: yesArchives of Andrology, 1980
Two patients in their twenties were investigated for a complaint of primary sterility. Semen analysis, showed azoospermia and testicular biopsy showed inhibited spermatogenesis in association with bilharzia ova in the interstitium in both cases. No similar cases were reported previously in the literature.
S M, Girgis, N F, Wassef
openaire   +2 more sources

An update on the potential for male contraception : emerging options [PDF]

open access: yes, 2013
The human population continues to grow and is estimated to rise to 10.1 billion by the end of the century. Therefore, there is still an unmet need for safe and highly effective contraceptive options for both men and women.
Alsaadi, Manal   +5 more
core   +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  

Role of androgen and gonadotrophins in the development and function of the Sertoli cells and Leydig cells: data from mutant and genetically modified mice [PDF]

open access: yes, 2009
Development and maintenance of the male phenotype and establishment of fertility are all dependent upon the activity of the Sertoli cells and Leydig cells of the testis.
Abel, M.H.   +4 more
core   +1 more source

Testicular histopathology, semen analysis and FSH, predictive value of sperm retrieval: supportive counseling in case of reoperation after testicular sperm extraction (TESE) [PDF]

open access: yes, 2018
Background: To provide indicators for the likelihood of sperm retrieval in patients undergoing testicular sperm extraction is a major issue in the management of male infertility by TESE.
Basciani, S   +10 more
core   +1 more source

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

open access: yesReproductive 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   +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]

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  

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]

open access: yesPLoS 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   +6 more
doaj   +1 more source

New era of cystic fibrosis: full mutational analysis and personalized therapy [PDF]

open access: yes, 2017
Despite its apparently simple genetics, cystic fibrosis (CF) is a rather complex genetic disease. A lot of variability in the steps of the path from the cystic fibrosis transmembrane conductance regulator (CFTR ) gene to the clinical manifestations ...
Lucarelli, Marco
core   +1 more source

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

open access: yesJournal 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   +5 more
doaj   +1 more source

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