Results 271 to 280 of about 316,363 (294)

Obstructive and Nonobstructive Azoospermia

2007
Defined as the inability to conceive a pregnancy within 12 mo of unprotected regular intercourse, subfertility affects approx 15% of couples in the United States. Of these couples, 40 to 60% or less will have a particular male factor responsible for their difficulty conceiving.
Peter N. Schlegel, Kinloch Nelson
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Sperm antibodies in a patient with obstructive azoospermia

Journal of Reproductive Immunology, 1993
An artificial spermatocoele was constructed at the level of the caput epididymis in a patient with obstructive azoospermia. Morphologically normal spermatozoa were harvested but motility and progression were inadequate for intra-uterine insemination or in vitro fertilisation.
D.J. Kay, J.S. Taylor, Barry Boettcher
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Identification of a missense variant in CLDN2 in obstructive azoospermia [PDF]

Journal of Human Genetics, 2019
Obstructive azoospermia (OA), defined as an obstruction in any region of the male genital tract, accounts for 40% of all azoospermia cases. Of all OA cases, ~30% are thought to have a genetic origin, however, hitherto, the underlying genetic etiology of the majority of these cases remain unknown.
Mohammad Ali Sadighi Gilani, Anu Bashamboo, Masomeh Askari, Razieh Karamzadeh, Navid Almadani, Mehdi Sadeghi, Anahita Mohseni Meybodi, Ken McElreavey, Mohammad Hossein Karimi-Jafari, Naser Ansari-Pour, Naser Ansari-Pour, Ahmad Vosough Taghi Dizaj, Mehdi Totonchi, Hamid Gourabi   +13 more
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Clinical outcome of microsurgery for obstructive azoospermia

International Journal of Urology, 1999
Background: Recent technical advances in microscopy have greatly improved the reconstruction of the seminal tract in cases of obstructive azoospermia.Methods: We evaluated the clinical outcome of 28 patients with obstructive azoospermia who underwent microsurgical reconstruction (i.e. vasovasostomy or unilateral epididymovasostomy).
Yoko Inaba, Hiroshi Okada, Soichi Arakawa, Masato Fujisawa, Sadao Kamidono   +4 more
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Sperm Extraction in Obstructive Azoospermia

Urologic Clinics of North America, 2020
For men with obstructive azoospermia, several surgical sperm retrieval techniques can facilitate conception with assisted reproductive technology. The evolution of both percutaneous and open approaches to sperm retrieval has been affected by technological innovations, including the surgical microscope, in vitro fertilization, and intracytoplasmic sperm
Jason P. Akerman, Solomon Hayon, Robert Matthew Coward   +2 more
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A pathogenic DMC1 frameshift mutation causes non-obstructive azoospermia but not primary ovarian insufficiency in humans.

Molecular human reproduction, 2021
Non-obstructive azoospermia (NOA) and diminished ovarian reserve (DOR) are two disorders that can lead to infertility in male and female. Genetic factors have been identified to contribute to NOA and DOR.
D. Cao, F. Shi, Chenxi Guo, Ye Liu, Zexiong Lin, Juanhui Zhang, R. Li, Yuanqing Yao, Kui Liu, E. Ng, W. Yeung, T. Wang   +11 more
semanticscholar   +1 more source

OUTCOME OF SURGICAL TREATMENT FOR OBSTRUCTIVE AZOOSPERMIA

Archives of Andrology, 2002
The efficacy of reanastomosis was evaluated in 30 patients with obstructive azoospermia, including 19 postvasectomy cases; 7 cases complicating inguinal herniorrhaphy; 2 cases with a characterized isolated congenital anomaly; 1 case of Young's syndrome; and 1 case with an unknown, possibly congenital cause. In the postvasectomy group.
Kiyomi Matsumiya, Akira Tsujimura, Masaya Kitamura, Kensaku Nishimura, Akihiko Okuyama, Masami Takeyama, Nobuyuki Kondoh, S. Takahara, Minoru Koga, Miura H   +9 more
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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, Ashok Agarwal, Edmund Sabanegh   +2 more
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Testicular Biopsy in Patients With Obstructive Azoospermia

The American Journal of Surgical Pathology, 1999
The present report studies the testicular biopsy lesions (histologic and semiquantitative) in a series of 48 patients with obstructive azoospermia of known etiology (vasectomy, congenital absence of vas deferens, herniorrhaphy, hydrocelectomy, Young's syndrome, and ejaculatory duct obstruction) in order to establish objective testicular data that ...
Ricardo Paniagua, Ignacio Galmés-belmonte, Manuel Nistal, María Luisa Riestra   +3 more
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Sperm retrieval for obstructive azoospermia

Fertility and Sterility, 2006
Advances in the treatment of male infertility now routinely allow men with obstructive azoospermia to have fertility treatment without microsurgical reconstruction. A variety of methods for retrieving sperm from men with obstructive azoospermia have been described.
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