Results 211 to 219 of about 3,343 (219)

Varicocele Repair in Patients With Nonobstructive Azoospermia: A Meta-Analysis

Journal of Urology, 2010
Multiple small case series have reported sperm in the ejaculate and spontaneous pregnancies in patients with nonobstructive azoospermia after varicocele repair. We hypothesized that men with favorable testicular histopathology on testis biopsy such as maturation arrest or hypospermatogenesis would have a higher probability of success than those with ...
John W. Weedin, Larry I. Lipshultz, Mohit Khera   +2 more
openaire   +3 more sources

Value of Testicular Biopsy in Nonobstructive Azoospermia

2017
One of the first problems that arise in the study of the azoospermic patient is to determine if he has a blockage of the spermatic ducts, obstructive azoospermia, or otherwise there is a primary failure in spermatogenesis, i.e., nonobstructive azoospermia (NOA). The testicular volume, FSH, and inhibin B may be normal in patients with NOA.
Manuel Nistal, Álvaro Serrano, Pilar González-Peramato   +2 more
openaire   +2 more sources

Clomiphene Administration for Cases of Nonobstructive Azoospermia: A Multicenter Study

Journal of Andrology, 2005
ABSTRACT: Clomiphene citrate is a well‐established agent that has been empirically used in cases of idiopathic oligospermia. Clomiphene increases endogenous gonadotropin‐releasing hormone secretion from the hypothalamus and gonadotropin hormone secretion directly from the pituitary and, thus, increases intratesticular testosterone concentration. Using
Yasar Ozgok, Lawrence S. Ross, Craig Niederberger, Alayman Hussein   +3 more
openaire   +3 more sources

Nonobstructive azoospermia: a spectrum, not a single disease

Fertility and Sterility, 2021
Thomas A. Masterson, Michael B. Tradewell   +1 more
openaire   +3 more sources

The Argument for Varicocele Repair in Nonobstructive Azoospermia

2018
Nonobstructive azoospermia (NOA) is a severe form of male factor infertility that typically obligates couples to intracytoplasmic sperm injection (ICSI) with testicular sperm. A significant proportion of these men, however, will also present with a palpable varicocele—a known modifiable risk factor for subfertility.
Connor M. Forbes, Marc Goldstein, Russell Hayden   +2 more
openaire   +2 more sources

A novel missense variant in PNLDC1 associated with nonobstructive azoospermia

Journal of Genetics
The most severe type of male infertility is nonobstructive azoospermia (NOA), where there is no sperm in the ejaculate due to failure of spermatogenesis. The predictable frequency of NOA in the general population is one in 100 men. Genetic studies have recognized dozens of NOA genes. Most NOA aetiologies remain idiopathic.
Rahimian, Mouness, Askari, Masomeh, Salehi, Najmeh, Jaafarinia, Mojtaba, Forouzanfar, Mohsen, Almadani, Navid, Riccio, Andrea, Totonchi, Mehdi   +7 more
openaire   +3 more sources

A Case of Acquired Nonobstructive Azoospermia

Fertility and Sterility, 2011
Lynn M. Westphal, P. Turek, K. O'Leary, Ruth B. Lathi   +3 more
openaire   +2 more sources

Perspectives on repeat sperm retrieval in nonobstructive azoospermia

Fertility and Sterility, 2013
openaire   +3 more sources

A NOVEL STEPWISE APPROACH OF MICROTESE IN NONOBSTRUCTIVE AZOOSPERMIA

Journal of Urology, 2009
Marcello Iacobelli, Ermanno Greco, Arturo Cavaliere, F. Petrucci, Giorgio Franco, Costantino Leonardo, Antonio De Cillis, D. Zavaglia   +7 more
openaire   +2 more sources