aspermia


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Related to aspermia: phimosis, polyzoospermia

aspermia

 [ah-sper´me-ah]
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

a·sper·mi·a

(ā-sper'mē-ă, ă-sper'),
Lack of secretion or expulsion of semen following ejaculation.
Farlex Partner Medical Dictionary © Farlex 2012

a·sper·mi·a

(ā-spĕr'mē-ă)
Inability to produce or ejaculate semen.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

aspermia

The absence of spermatozoa in the semen or the inability to ejaculate semen. Obstructive aspermia is due to the blockage of the VAS DEFERENS on both sides. This may be congenital or acquired from infection or injury, or from VASECTOMY. CYSTIC FIBROSIS causes aspermia as a result of failure of development of the vas or associated structures.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005
References in periodicals archive ?
Type Phenotype References ob/ob mice Testicular atrophy Decrease [40] nuclear volume of Sertoli cells, spermatogonia, and spermatocytes ob/ob mice Infertile Reduction of testis [41] weight, multinucleated spermatids, few spermatozoa, and anormal Leydig cells db/db mice Infertile [43] db/db mice Infertile Impairment of [14] spermatogenesis and sperm motility fa/fa rat (Zucker rat) Alteration in sperm production [45] and sperm DNA damage AdipoR2 Seminiferous tubular atrophy [54] with aspermia and reduced testicular weight AdipoR2 Decrease of testis weight [58]
Moreover, stress in males with conditions like severe oligospermia, teratozoospermia, azoospermia, aspermia was 6 times greater than those with mild to moderate oligospermia, oligoasthenospermia in comparison to those diagnosed with normospermia or no urological abnormality.
MRDT (male reproductive developmental toxicity): sperm effects, histological effects, and tissue weight change were reported exclusively in developmental studies, plus all malformations; tumor location and methods used for sperm count were not specified in ToxRefDB; general histological effects include inflammation, necrosis, and pigmentation, in contrast with spermatogenesis-specific histological effects such as aspermia, immature sperm, and retained spermatids.
In the rose-ringed parakeets, the period of aspermia in April had begun already before the endoscopic procedure.