Results 41 to 50 of about 81,705 (258)

The Role of Dietary Nutrients in Male Infertility: A Review

Life, 2023
Male infertility is the main health issue with economic, psychological, and medical attributions. Moreover, it is characterized by an inability to produce a sufficient amount of sperm for the fertilization of an oocyte.
Mona S. Almujaydil
doaj   +1 more source

Decline of semen quality among Chinese sperm bank donors within 7 years (2008-2014)

Asian Journal of Andrology, 2017
Semen from 5210 sperm bank donors was analyzed and trends in semen quality were evaluated at Shandong Human Sperm Bank between 2008 and 2014. After 2-7 days of abstinence, semen samples were collected.
Li Wang, Lin Zhang, Xiao-Hui Song, Hao-Bo Zhang, Cheng-Yan Xu, Zi-Jiang Chen   +5 more
doaj   +1 more source

Cryopreservation and quality assessment of boar semen collected from bulk samples

Veterinární Medicína, 2019
The purpose of this study was to examine sperm quality after cryopreservation of ejaculates collected as a bulk sample, which is routinely part of semen collection, and to compare this quality with the sperm-rich fraction in boars.
Ruthaiporn Ratchamak, Thevin Vongpralub, Wuttigrai Boonkum, Vibuntita Chankitisakul   +3 more
doaj   +1 more source

Effects of temperature anomaly on sperm quality: A multi-center study of 33,234 men

Heliyon
Backgrounds: Global fertility rates continue to decline and sperm quality is a prime factor affecting male fertility. Both extreme cold and heat have been demonstrated to be associated with decreased sperm quality, but no epidemiological studies have ...
Lina Xiao, Qiling Wang, Haobo Ni, Ting Xu, Xiaoyan Cai, Tingting Dai, Lingxi Wang, Chunying Song, Yushan Li, Fuping Li, Tianqing Meng, Huiqiang Sheng, Xiaolin Yu, Qinghui Zeng, Pi Guo, Xinzong Zhang   +15 more
doaj   +1 more source

Effects of L-carnitine and L-acetyl-carnitine on testicular sperm motility and chromatin quality [PDF]

Iranian Journal of Reproductive Medicine, 2012
Background: Sperm cells extracted from testes (TESE) have poor chromatin quality and motility. Various substances are used in the laboratory to increase sperm motility and improve the ART outcomes; however, there are few research which considered ...
Elham Aliabadi, Malek Soleimani Mehranjani, Zahra Borzoei, Tahereh Talaei-Khozani, Hossein Mirkhani, Hamed Tabesh   +5 more
doaj  

More Pitfalls with Sperm Viability Staining and a Viability-Based Stress Test to Characterize Sperm Quality

Frontiers in Ecology and Evolution, 2017
Sperm viability (SV), the proportion of live sperm in a sample, is a widely applied measure of sperm quality but few studies test its robustness. At least three reasons make SV problematic as a surrogate for sperm quality. First, reviewing the ecological
Barbara A. Eckel, Ruijian Guo, Klaus Reinhardt   +2 more
doaj   +1 more source

Solea senegalensis sperm cryopreservation: New insights on sperm quality

PLOS ONE, 2017
Cryopreservation of Senegalese sole sperm can represent an alternative to overcome some reproductive problems of this species. However, it is important to guarantee the safe use of cryopreserved sperm by selecting an appropriate protocol according to a high demand quality need to be ensured.
F RIESCO, MARTA, Oliveira, Catarina, Soares, Florbela, Gavaia, Paulo J., Dinis, Maria Teresa, Cabrita, Elsa   +5 more
openaire   +6 more sources

Identifying transcription factors controlling the basal expression of human MRP4 highlights a substantial role for Sp1

FEBS Open Bio, EarlyView.
The MRP4 transporter exports several drugs and signaling molecules. Here, we identified key promoter elements regulating basal MRP4 expression. Using reporter assays, we defined a conserved region with essential Sp1 and contributory Ets sites, which controlled basal MRP4 expression.
Debora Singer, Angelique Kragl, Katrin Ziems, Juliane Glaubitz, Sophie Grammbauer, Susanne Hildebrandt, Mladen V. Tzvetkov, Gabriele Jedlitschky   +7 more
wiley   +1 more source

A Surface‐engineered Microfluidic Device for Antibody‐Mediated Negative Selection of High‐Quality Sperm for Assisted Reproduction

Advanced Functional Materials, EarlyView.
This study reports a microfluidic device with a functionalized surface utilizing a polyoxazoline coating and covalently immobilized gold nanoparticles and anti‐phosphatidylserine antibody. The device efficiently eliminates pre‐apoptotic and apoptotic spermatozoa and yields sperm with substantially improved quality and low DNA damage, offering a simple ...
Soraya Rasi Ghaemi, David J. Sharkey, Nicole O. McPherson, Markos Negash Alemie, Krasimir Vasilev, Sarah A. Robertson   +5 more
wiley   +1 more source

Wu Zi Yan Zong Wan enhances sperm quality in boars by regulating spermatogenesis-related pathways and gut microbiota. [PDF]

Front Vet Sci
Wu Zi Yan Zong Wan (WZYZW) is a well-known Traditional Chinese Medicine formula used to treat low sperm quality, although its underlying therapeutic mechanism remains incompletely elucidated.
Lv W, Gao X, Zhao H, Cao M, Zhou L, Chai S, Guan Y, Lian J, Qu Q, Guo S.   +9 more
europepmc   +2 more sources