Results 41 to 50 of about 8,359 (251)

Mechanisms of oligozoospermia: an oxidative stress perspective [PDF]

Systems Biology in Reproductive Medicine, 2014
Infertile patients presenting with poor semen concentration, motility, and morphology have significantly higher levels of reactive oxygen species (ROS). In this cross-sectional study, our goal was to: 1) determine how semen parameters such as concentration, motility, morphology, as well as ROS are altered in oligozoospermic men alone and those in ...
Ashok Agarwal, Edmund Sabanegh, Aditi Mulgund, Rakesh Sharma   +3 more
openaire   +3 more sources

Mutations involving the SRY-related gene SOX8 are associated with a spectrum of human reproductive anomalies [PDF]

, 2018
SOX8 is an HMG-box transcription factor closely related to SRY and SOX9. Deletion of the gene encoding Sox8 in mice causes reproductive dysfunction but the role of SOX8 in humans is unknown.
Achermann, JC, Almstrup, K, Bashamboo, A, Bignon-Topalovic, J, Brauner, R, Chantot-Bastaraud, S, Charreau, EH, Chiauzzi, VA, Christin-Maitre, S, Dain, L, de Malleray Pichard, C, Dumargne, M-C, Duncan, AJ, Eozenou, C, Fusee, L, Hyon, C, Jauch, R, Louis-Sylvestre, C, MacGowan, S, Mazen, I, McElreavey, K, McLean, WHI, Patin, E, Persani, L, Portnoi, M-F, Rajkovic, A, Rajpert-De Meyts, E, Ravel, C, Reyes-Mugica, M, Rojo, S, Rossetti, R, Rouba, H, Schluth-Bolard, C, Siffroi, J-P, Srivastava, Y, Validire, P, Witchel, SF, Yatsenko, SA   +37 more
core   +11 more sources

Methylation Status of Imprinted Genes and Repetitive Elements in Sperm DNA from Infertile Males [PDF]

, 2011
Stochastic, environmentally and/or genetically induced disturbances in the genome-wide epigenetic reprogramming processes during male germ-cell development may contribute to male infertility.
El Hajj, N., Gromoll, J., Haaf, T., Hahn, T., Schneider, E., Schorsch, M., Tresch, A., Zechner, Ulrich   +7 more
core   +1 more source

Men with oligozoospermia had lower level of seminal plasma pyridoxine compared to normozoospermic men

Heliyon, 2022
The contribution of pyridoxine on various human disorders has been revealed in so many studies; however, this contribution on poor semen quality has yet to be investigated.
Saleem A. Banihani, Shefa’ M. Aljabali
doaj  

Chromosomal and molecular abnormalities in a group of Brazilian infertile men with severe oligozoospermia or non-obstructive azoospermia attending an infertility service

International Brazilian Journal of Urology, 2011
PURPOSE: To determine the frequency of genetic alterations in a population of Brazilian infertile men with severe oligozoospermia or non-obstructive azoospermia.
Fernanda A. Mafra, Denise M. Christofolini, Bianca Bianco, Marcello M. Gava, Sidney Glina, Sintia I. N. Belangero, Caio P. Barbosa   +6 more
doaj   +1 more source

Next-generation sequencing: toward an increase in the diagnostic yield in patients with apparently idiopathic spermatogenic failure

Asian Journal of Andrology, 2021
A large proportion of patients with idiopathic spermatogenic failure (SPGF; oligozoospermia or nonobstructive azoospermia [NOA]) do not receive a diagnosis despite an extensive diagnostic workup.
Rossella Cannarella, Rosita A Condorelli, Stefano Paolacci, Federica Barbagallo, Giulia Guerri, Matteo Bertelli, Sandro La Vignera, Aldo E Calogero   +7 more
doaj   +1 more source

Testicular Biopsy in Azoospermia and Severe Oligozoospermia [PDF]

Archives of Andrology, 1984
The continued experience of testicular biopsy application in 861 cases of azoospermia and 152 cases of severe oligospermia is reported adding to the previously published cases of 1075 patients with azoospermia. The most common finding in the whole series was that of normal testis denoting obstruction (48%), while among cases of functional azoospermia ...
S. M. Girgis, A. Attia, M. N. Momen, A. O. Karaksy, M. M. Mousa   +4 more
openaire   +3 more sources

Genetic and epigenetic factors: Role in male infertility

Indian Journal of Urology, 2011
Genetic factors contribute upto 15%-30% cases of male infertility. Formation of spermatozoa occurs in a sequential manner with mitotic, meiotic, and postmeiotic differentiation phases each of which is controlled by an intricate genetic program.
M B Shamsi, K Kumar, R Dada
doaj   +1 more source

Factors associated with aberrant imprint methylation and oligozoospermia [PDF]

Scientific Reports, 2017
AbstractDisturbingly, the number of patients with oligozoospermia (low sperm count) has been gradually increasing in industrialized countries. Epigenetic alterations are believed to be involved in this condition. Recent studies have clarified that intrinsic and extrinsic factors can induce epigenetic transgenerational phenotypes through apparent ...
Nobuo Yaegashi, Takafumi Utsunomiya, Hiroaki Okae, Takahiro Arima, Norio Kobayashi, Hitoshi Hiura, Kunihiko Nakai, Akane Kitamura, Nozomi Tatsuta, Akiko Sato, Naoko Miyauchi   +10 more
openaire   +3 more sources

Biochemistry and functional aspects of human glandular kallikreins [PDF]

, 1980
Human urinary kallikrein was purified by gel filtration on Sephacryl S-200 and affinity chromatography on aprotinin-Sepharose, followed by ion exchange chromatography on DEAE-Sepharose.
B. Schütte, Bqruni Förg-Brey, D.E. Fahrney, E. Fink, E. Fink, E. Fink, E.K. Frey, Edwin Fink, F. Fiedler, F. Fiedler, F. Fiedler, G. Dietze, G. Krystal, H. Fritz, H. Rumpelts, H.R. Maurer, I. Trautschold, O.A. Carretero, P. Edman, R. Geiger, R. Geiger, Reinhard Geiger, Ulrike Stuckstedte, W.B. Schill, W.F. Caspary   +24 more
core   +1 more source