Results 121 to 130 of about 35,229 (220)

Genetic risk factors in infertile men with severe oligozoospermia and azoospermia [PDF]

, 2002
BACKGROUND: Male infertility due to severe oligozoospermia and azoospermia has been associated with a number of genetic risk factors. METHODS: In this study 150 men from couples requesting ICSI were investigated for genetic ...
Dohle, G.R. (Gert), Govaerts, L.C. (Lutgarde), Halley, D.J.J. (Dicky), Weber, R.F.A. (Robert), Pieters, M.H., Ouwel, A.M. van den, Hemel, J.O. van   +6 more
core   +1 more source

Testicular histopathology and its association with germ cell numbers, serum concentrations of reproductive hormones, and semen quality

Andrology, Volume 14, Issue 8, Page 2388-2400, November 2026.
Abstract Background It is well‐established that spermatogenesis, semen quality, and reproductive hormones are interlinked. It is, however, less well‐described how various specific testicular histopathologies are linked to reproductive hormones and semen quality.
Gülizar Saritas, Nina Mørup, Trine H. Johannsen, Anders Juul, Lise Aksglaede, Sofia B. Winge, Kristian Almstrup   +6 more
wiley   +1 more source

Congenital obstructive azoospermia in a man with Marfan syndrome

, 2001
OBJECTIVE: To present a case of Marfan syndrome and concurrent congenital obstructive azoospermia. DESIGN: Case report. SETTING: Tertiary-care academic hospital. PATIENT(S): A man with Marfan syndrome and obstructive azoospermia.
Bontis, J., Papadimas, J., Kukuvitis, A., Georgiou, I., Ioannidis, S., Tarlatzis, B.   +5 more
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The use of deidentified organ donor testes for research

Andrology, Volume 14, Issue 8, Page 2359-2372, November 2026.
Abstract Our knowledge of testis development and function mainly comes from research using mammalian model organisms, primarily the mouse. However, there are integral differences between men and other mammalian species regarding cellular composition and expression profiles during fetal and post‐natal testis development and in the mature testis ...
Marina V. Pryzhkova, Marnie W. Skinner, Juliana I. Candelaria, Stephen R. Wellard, Philip W. Jordan   +4 more
wiley   +1 more source

The role of iron in normal and impaired testicular function

Andrology, Volume 14, Issue 8, Page 2373-2387, November 2026.
Abstract Iron plays a critical role in testicular physiology, impacting spermatogenesis, testosterone production, and overall testicular function. Iron homeostasis is maintained through systemic and cellular regulatory mechanisms, including hepcidin‐mediated systemic iron control and the iron‐responsive element/iron regulatory protein (IRE/IRP) system ...
Aileen Harrer, Esther G. Meyron‐Holtz, Andreas Meinhardt   +2 more
wiley   +1 more source

Non-Obstructive Azoospermia and the Impact of MicroTESE

, 2016
In non-obstructive azoospermia (NOA), no spermatozoa are present in the ejaculate as a result of compromised or absent spermatogenesis. NOA is distinguished from obstructive azoospermia by patient history, clinical examination and hormone profile.
Waterstone, J, Dineen, T, Cullen, I
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Somatic mutational analysis of DAX1 in testes from men with idiopathic azoospermia

, 2005
Mutations in the orphan nuclear receptor DAX1 (NR0B1) cause X-linked adrenal hypoplasia congenital (AHC), a disorder characterized by primary adrenal failure, hypogonadotropic hypogonadism. and azoospermia.
A. Spada, G. M. Colpi, G. Mantovani, M. Mancini, P. Beck-Peccoz, L. Persani, G. Gazzano   +6 more
core   +1 more source

Transient Azoospermia Induced by Valganciclovir Treatment for Cytomegalovirus Infection in a Reproductive Male After Kidney Transplant: A Case Report

IJU Case Reports
Introduction Spermatogenic dysfunction is a side effect of valganciclovir, which is commonly used to treat cytomegalovirus infections. Here, we report the case of a reproductive man who underwent kidney transplantation and was diagnosed with azoospermia ...
Kosuke Mieda, Shunta Hori, Mitsuru Tomizawa, Kuniaki Inoue, Tatsuo Yoneda, Yuji Nitta, Yasushi Nakai, Makito Miyake, Nobumichi Tanaka, Kiyohide Fujimoto   +9 more
doaj   +1 more source

Hormonal Therapy Before Micro‐TESE in Men With Nonobstructive Azoospermia: A Negative Answer to an Overly Broad Question

Andrology, EarlyView.
Sandro C. Esteves, Arnold P. P. Achermann, Ricardo Miyaoka, Cassio L. Z. Riccetto, Adriano Fregonesi   +4 more
wiley   +1 more source

Study on biological and environmental factors for azoospermia [PDF]

, 2016
The absence of sperm in the seminal fluid is known as azoospermia. This medical condition is in a direct association with male's infertility. A complete medical history, physical examination, tests of selected hormones and tests for male fertility ...
Spas Dzhoglov, Evgeniya Ivanova
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