Results 181 to 190 of about 28,616 (239)

A homozygous PIWIL1 frameshift variant triggers azoospermia and reveals a strong selective constraint on germline genome integrity. [PDF]

open access: yesJ Assist Reprod Genet
Balde-Camara A   +12 more
europepmc   +1 more source

Azoospermia

Southern Medical Journal, 1981
By using a detailed history and physical examination, endocrinologic studies, and, in some cases, testicular biopsy, we assign azoospermic men to three pathogenic groups: pretesticular, testicular, and posttesticular. This and further subclassification allow physicians to provide prognostic information.
H A, Fuselier, E N, Beckman
openaire   +4 more sources

Nonobstructive azoospermia

Current Opinion in Urology, 2000
Nonobstructive azoospermia (NOA) remains a challenging condition in reproductive medicine to manage. The genetic basis of NOA related to partial deletions of the Y-chromosome has been intensely investigated. Such information is of prognostic value and allows more insightful genetic counseling of couples who opt for assisted reproductive technology ...
P T, Chan, P N, Schlegel
openaire   +2 more sources

Obstructive Azoospermia

Urologic Clinics of North America, 2014
Obstructive azoospermia accounts for 40% of azoospermia and results from obstruction of the excurrent ducts (due to many causes) at any location between the rete testis and the ejaculatory ducts. The diagnosis of obstructive azoospermia (OA) requires a stepwise approach to differentiate it from nonobstructive OA and to formulate management options ...
Matthew S, Wosnitzer, Marc, Goldstein
openaire   +2 more sources

Review of Azoospermia [PDF]

open access: yesSpermatogenesis, 2014
Azoospermia is classified as obstructive azoospermia (OA) or non-obstructive azoospermia (NOA), each having very different etiologies and treatments. The etiology, diagnosis, and management of azoospermia were reviewed and relevant literature summarized.
Matthew Wosnitzer
exaly   +3 more sources

Azoospermia

2014
Azoospermia is defined as the complete absence of sperm in the ejaculate even after centrifugation. With a prevalence of 1 % among the general male population and 10-15 % among infertile men, it can be classified in two large groups: Obstructive and non-obstructive azoospermia (OA and NOA).
Franco G., Misuraca L., Tuderti G.
openaire   +2 more sources

Secondary azoospermia after vasovasostomy

Fertility and Sterility, 2004
To determine the frequency of secondary azoospermia after microsurgical vasovasostomy and to determine what factors increase the risk of its occurrence.We performed a retrospective review of three surgeons' experience. Patency was defined as the presence of sperm in at least one postoperative semen sample.
Peter N, Kolettis   +5 more
openaire   +2 more sources

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