azoospermia

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azoospermia

[¦ā‚zō·ō′spər·mē·ə]
(physiology)
Absence of motile sperm in the semen.
Failure of formation and development of sperm.
References in periodicals archive ?
Decrease of both stem cell factor and clusterin mRNA levels in testicular biopsies of azoospermic patients with constitutive or idiopathic but not acquired spermatogenic failure.
In vitro propagation of human SSCs has been reported with small pieces of normal human testis,13 as well as small testicular biopsies from azoospermic and non- obstructive azoospermic (NOA) patients with a number of important growth factors, including stem cell factor (SCF), leukaemia inhibitory factor (LIF), glial cell-derived neurotrophic factor (GDNF), basic fibroblast growth factor (bFGF) and epidermal growth factor (EGF) in different culture systems.
An exceptional complex chromosomal rearrangement (CCR) with eight breakpoints involving four chromosomes (1;3;9;14) in an azoospermic male with normal phenotype.
747) Analysis includes 5 azoospermic men but excludes 39 men who had missing values for PFCs (n = 11), missing semen samples (n = 26), or both (n = 2).
The seminal plasma of normospermic and azoospermic men has been analyzed for detection of spermatogenesis.
To determine the pattern of hormonal abnormalities and testicular pathology in azoospermic male Nigerians in Kano, Northern Nigeria, semen samples from consecutive azoospermic infertile males attending the fertility clinic at Aminu Kano Teaching Hospital, Kano, were analyzed over a period of six months, after which serum FSH, LH, testosterone and prolactin were assayed, and histological examination of testicular biopsies done.
Objective: The aim of this study was to determine the frequencies of Y chromosome microdeletions in infertile azoospermic and oligozoospermic Turkish men and in healthy control subjects.
Chromosome analysis of epididymal and testicular sperm in azoospermic patients undergoing ICSI.
Azoospermic menwith deletion of the DAZ gene cluster is capable of completing spermatogenesis: fertilization, normal embryonic development and pregnancy occur when retrieved testicular spermatozoa are used for intracytoplasmic sperm injection.
But comparing the cancer risk of azoospermic and nonazoospermic infertile men revealed a major disparity: The azoospermic men were at a substantially elevated risk - nearly three times as likely to receive a diagnosis of cancer as men in the overall population.
Multivitamin and micronutrient treatment improves semen parameters of azoospermic patients with maturation arrest.