Results 111 to 120 of about 11,952,476 (292)

Healthy Aging Men Do Not Suffer From Relevant Limitations of Their Reproductive Functions

Andrology, EarlyView.
Abstract Background While metabolic disorders are well‐established contributors to testosterone decline and erectile dysfunction (ED), little is known about the natural progression of reproductive parameters in healthy aging men. Objectives This study aimed to evaluate longitudinal changes in reproductive parameters and sought to determine the ...
Simone Bier, Jann‐Frederik Cremers, Phillip Schrage, Amelie Körtje, Claudia Krallmann, Sabine Kliesch, Jörg Gromoll, Sandra Laurentino, Michael Zitzmann   +8 more
wiley   +1 more source

Molecular genetics and pathophysiology of 17 beta-hydroxysteroid dehydrogenase 3 deficiency. [PDF]

, 1996
Autosomal recessive mutations in the 17 beta-hydroxysteroid dehydrogenase 3 gene impair the formation of testosterone in the fetal testis and give rise to genetic males with female external genitalia.
Andersson, Stefan, Blethen, Sandra L., Bloise, Walter, Cutler Jr., Gordon B., Davis, Daphne L., Geissler, Wayne M., Griffin, James E., Grumbach, Melvin M., Mendonca, Berenice B., New, Maria I., Russell, David D., Schwarz, Hans P., Wilson, Jean D., Witchel, Selma F., Wu, Ling   +14 more
core   +1 more source

Sperm Telomere Interactions Are Impaired in Testicular Cancer Before and After Adjuvant Therapy

Andrology, EarlyView.
ABSTRACT Background No study has yet explored telomere length or interaction in sperm nuclei of testicular cancer (TC) patients exposed to chemotherapy or radiotherapy. However, sperm telomere dynamics have emerged as a potential marker in male infertility.
Benoit Berby, Sylvianne Hennebicq, Jacqueline Saias, Florence Brugnon, Isabelle Berthaut, Myriam Daudin, Louis Bujan, Ludovic Dumont, Christine Rondanino, Aurélie Feraille, Nathalie Rives   +10 more
wiley   +1 more source

Presence and localization of a 30-kDa basic fibroblast growth factor-like protein in rodent testes [PDF]

, 1991
We have used a recently characterized rabbit antiserum against basic fibroblast growth factor (bFGF), which recognizes various forms of bFGF, to examine the presence and localization of bFGF in the testes of adult rats and mice and the 5-day-old rat.
Gratzl, Manfred, Grothe, C., Mayerhofer, Artur, Rudolf, M., Russell, J. T.   +4 more
core   +1 more source

Cordycepin induced MA-10 mouse Leydig tumor cell apoptosis by regulating p38 MAPKs and PI3K/AKT signaling pathways

Scientific Reports, 2015
The p38 MAPKs play important roles in the regulation of balance between cell survival and cell death on the development of various cancers. However, the roles of p38 MAPKs regulating apoptotic effects on Leydig tumor cells remain unclear.
Bo-Syong Pan, Yang-Kao Wang, Meng-Shao Lai, Y. Mu, B. Huang   +4 more
semanticscholar   +1 more source

Semen Cryopreservation in Testicular Cancer: Before or After Orchidectomy?

Andrology, EarlyView.
ABSTRACT Background Fertility preservation in patients with testicular cancer remains a clinical priority, yet the optimal timing for sperm cryopreservation—before or after orchidectomy—remains a matter of debate. Objectives The aim of this study was to determine the optimal timing for semen cryopreservation and the best‐quality sample for ART.
Alessandra Buonacquisto, Carlotta Pozza, Gaia Cicolani, Anna Chiara Conflitti, Luisa Caponecchia, Serena Bianchini, Enrico Delli Paoli, Marta Tenuta, Daniele Gianfrilli, Andrea M. Isidori, Francesco Lombardo, Francesco Pallotti, Donatella Paoli   +12 more
wiley   +1 more source

Testicular SIRT1 Loss Reveals an Aging‐Like Proteomic Landscape and Precipitates Reproductive Deterioration

Andrology, EarlyView.
ABSTRACT Background Advanced paternal age is associated with reduced male fertility and testicular dysfunction. Among the molecular regulators involved in aging, SIRT1, a NAD+‐dependent deacetylase, plays a pivotal role in maintaining oxidative balance and cellular homeostasis.
María Iniesta‐Cuerda, Jiřina Havránková, Hedvika Řimnáčová, Jiří Moravec, František Liška, Martin Knytl, Milena Králíčková, Jan Nevoral   +7 more
wiley   +1 more source

In vitro and in vivo studies on the effect of a mitochondrial fusion promoter on Leydig cell integrity and function

Frontiers in Toxicology
Background: The interstitial testicular Leydig cells are responsible for the production of testosterone, which functionally deteriorate with normal aging.
Samuel Garza, Chantal Sottas, Hovhannes J. Gukasyan, Vassilios Papadopoulos   +3 more
doaj   +1 more source

Expression of the DNA mismatch repair proteins hMLH1 and hPMS2 in normal human tissues. [PDF]

, 1997
hMLH1 and hPMS2 are part of the DNA mismatch repair complex. Mutations in these genes have been linked to hereditary non-polyposis colon cancer; they also occur in a variety of sporadic cancers. Western blot analysis and immunohistochemistry demonstrated
Aebi, S, Christen, RD, Fink, D, Howell, SB, Kim, HK, Nebel, S, Zheng, H   +6 more
core   +1 more source

Peroxiredoxin 4 Involved in Spermatogenesis by Affecting Oxidative Stress and Ferroptosis

Andrology, EarlyView.
ABSTRACT Background The main functions of testes are sperm production and androgen secretion in testicular befitting microenvironment. Excessive level of the reactive oxygen species (ROS) from metabolism and cellular events can lead to oxidative stress (OS) and ferroptosis, which injure the functions of mitochondria and endoplasmic reticulum (ER) of ...
Shuning Yuan, Nini Wei, Weiwei Ma, Mengting Hu, Bei Zhang, Li Gao, Chao Gao, Xiaoyu Yang, Yan Meng, Jiayin Liu, Yugui Cui   +10 more
wiley   +1 more source