Results 161 to 170 of about 9,757 (189)

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, Russell P. Hayden, Marc Goldstein   +2 more
openaire   +1 more source

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
Alayman, Hussein, Yasar, Ozgok, Lawrence, Ross, Craig, Niederberger   +3 more
openaire   +2 more sources

Nonobstructive azoospermia: a spectrum, not a single disease

Fertility and Sterility, 2021
Michael B, Tradewell, Thomas A, Masterson   +1 more
openaire   +2 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, Pilar González-Peramato, Álvaro Serrano   +2 more
openaire   +1 more source

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

Efficacy of the second micro–testicular sperm extraction after failed first micro–testicular sperm extraction in men with nonobstructive azoospermia

Fertility and Sterility, 2021
Emre Bakırcıoğlu, Oktay Özman, Suleyman Tosun   +2 more
exaly  

Next-generation sequencing analysis of semen microbiome taxonomy in men with nonobstructive azoospermia vs. fertile controls: a pilot study

F&S Science, 2023
Scott D Lundy, Praveen Singh, Katherine Campbell   +2 more
exaly  

A Case of Acquired Nonobstructive Azoospermia

Fertility and Sterility, 2011
K. O'Leary, R. Lathi, P. Turek, L. Westphal   +3 more
openaire   +1 more source

Management of Nonobstructive Azoospermia

2014
Ibrahim Fahmy, Ahmed El-Guindi
openaire   +1 more source

Testicular sperm characteristics in men with nonobstructive azoospermia and their impact on intracytoplasmic sperm injection outcome

Fertility and Sterility, 2022
Nikica Zaninovic, Peter N. Schlegel, Nahid Punjani   +2 more
exaly