Results 241 to 250 of about 57,158 (293)

Kallman syndrome and central non-obstructive azoospermia

Best Practice & Research Clinical Endocrinology & Metabolism, 2020
The understanding of male factors of infertility has grown exponentially in the past ten years. While clear guidelines for obstructive azoospermia have been developed, management of non-obstructive azoospermia has lagged. Specifically, management of Kallmann Syndrome and central non-obstructive azoospermia has been limited by a lack of understanding of
Sameer, Thakker, Jesse, Persily, Bobby B, Najari   +2 more
openaire   +2 more sources

Genetic mutations contributing to non-obstructive azoospermia

Best Practice & Research Clinical Endocrinology & Metabolism, 2020
Non-obstructive azoospermia is a distinct diagnosis within male infertility in which no sperm is found in the ejaculate as a result of spermatogenesis failure. Because of the increased prevalence of genetic abnormalities in men with non-obstructive azoospermia, male infertility guidelines recommend screening for karyotype abnormalities and Y chromosome
Vanessa N, Peña, Taylor P, Kohn, Amin S, Herati   +2 more
openaire   +2 more sources

Biological therapy for non-obstructive azoospermia

Expert Opinion on Biological Therapy, 2017
Most male patients with non-obstructive azoospermia (NOA) have no therapeutic options outside of assisted reproductive techniques to conceive a biological child. If mature sperm cannot be obtained from the testes, these patients must rely on options of donor sperm or adoption.
Sarah C, Vij, Edmund, Sabanegh, Ashok, Agarwal   +2 more
openaire   +2 more sources

Sperm retrieval techniques in patients with non-obstructive azoospermia

Urologiia, 2021
Patients with non-obstructive azoospermia (NOA), which accounts for up to 10-15% of all cases of male infertility, until recently could only become parents using donor sperm or through adoption. Modern technical capabilities of sperm extraction in combination with the use of assisted reproductive technologies, make it possible to effectively overcome ...
N D, Akhvlediani, I A, Reva, A S, Chernushenko, D Yu, Pushkar   +3 more
openaire   +2 more sources

Different group of non‐obstructive intermittent azoospermias among non‐obstructive azoospermia patients: A ten‐year retrospective cohort study with control group

Andrologia, 2021
We have identified patients among non-obstructive azoospermia (NOA) cases in whom spermatozoa could not be detected despite treatment, but intermittent ejaculatory spermatozoon was found in their follow-up. NOA was observed in the retrospective screening at a rate of 15.35% among infertile men (n = 1976/12,871), while non-obstructive intermittent ...
Ahmet Salvarci, Mehmet Balasar
openaire   +2 more sources

Human chorionic gonadotropin-based clinical treatments for infertile men with non-obstructive azoospermia.

Andrology
Spermatogenesis is primarily controlled by follicle-stimulating hormone and luteinizing hormone-driven testosterone. Luteinizing hormone acts on the Leydig cells, stimulating steroid production, predominantly testosterone, and activating critical inter ...
S. Esteves, Marina C Viana, A. Achermann, Daniele Santi   +3 more
semanticscholar   +1 more source

Fine needle aspiration vs. mTESE in non‐obstructive azoospermia

International Journal of Andrology, 2008
SummaryThis study was carried out on 100 patients with non‐obstructive azoospermia (NOA) to compare between results and complications of fine needle aspiaartion (FNA) vs. microdissection testicular sperm extraction (mTESE) sperm retrieval. They underwent history taking, clinical examination, semen analysis, serum follicle stimulating hormone estimation
S, El-Haggar, T, Mostafa, T, Abdel Nasser, R, Hany, A, Abdel Hadi   +4 more
openaire   +2 more sources

Emerging trends in the management of non‐obstructive azoospermia

UroPrecision
Ten percent of infertile males have azoospermia, classified into obstructive and nonobstructive types, which require specific medical or surgical treatments.
Mina Saad, Mohamed Alkabeer, Dina Abdelmonim, Sameh Fayek GamalElDin, M. W. Ragab   +4 more
semanticscholar   +1 more source

[Stem cell therapy for non-obstructive azoospermia].

Zhonghua nan ke xue = National journal of andrology, 2021
Non-obstructive azoospermia (NOA) is an important factor that causes male infertility. Stem cells are a group of cells capable of self-renewal and multi-directional differentiation, and embryonic stem cells and induced pluripotent stem cells can generate spermatozoa through differentiation, which, however, is confronted with ethical constraints and the
Cun-Can, Deng, Gui-Hua, Liu
openaire   +1 more source