Results 131 to 140 of about 7,680,621 (399)

Association between ambient temperature and semen quality: A longitudinal study of 10 802 men in China

open access: yesEnvironment International, 2020
Semen quality is a vital determinant for male fertility. The process of spermatogenesis is highly sensitive to fluctuations in temperature. However, the impact of ambient temperature on semen quality remains unclear. We aimed to quantitatively assess the
Yun Zhou   +12 more
doaj   +1 more source

Sperm motility parameters of Barbus barbus callensis throughout the reproduction season: Computer aided semen analysis and gametes motility duration [PDF]

open access: yes, 2016
The present study investigated the existing relationship between computer assisted semen motility parameters and gametes motility duration, known to express semen quality and fertilizing capacity in fish.
Aberkane, B., Iguer-ouada, M.
core  

Psychological and physiological adaptations to sperm competition in humans [PDF]

open access: yes, 2005
Postcopulatory competition between males, in the form of sperm competition, is a widespread phenomenon in many animal species. The extent to which sperm competition has been an important selective pressure during human evolution remains controversial ...
Goetz, AT, Pound, N, Shackelford, TK
core   +2 more sources

Quality of Semen Stored in On-the-Farm Semen Tanks

open access: yesJournal of Dairy Science, 1980
We assessed the damage to frozen semen packaged in French straws stored for 2 yr in 60 on-the-farm semen tanks on 56 Washington dairy farms. Percentage of motile spermatozoa and percentage of spermatozoa with intact acrosomes were not affected significantly by position of the semen on the rack (top or bottom goblet).
P L, Senger, W C, Becker, J K, Hillers
openaire   +2 more sources

Diabetes‐induced vascular calcification is associated with low pyrophosphate and its oral supplementation prevents calcification in diabetic mice

open access: yesFEBS Open Bio, EarlyView.
Induction of diabetes in three different mouse strains uniformly resulted in an increase in TNAP activity and a reduction in pyrophosphate (PPi) in the circulation. Inhibition of TNAP restored plasma PPi. Diabetes‐induced calcification in the media layer of the aorta was detected only in the Abcc6−/− strain, which is predisposed to ectopic ...
Krisztina Fülöp   +13 more
wiley   +1 more source

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

open access: yesAsian 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   +5 more
doaj   +1 more source

The photoswitchable cannabinoid azo‐HU308 enables optical control of Ca2+ dynamics in INS‐1 β‐cells via off‐target effects on TRPC channels

open access: yesFEBS Open Bio, EarlyView.
Light activation of the photoswitchable cannabinoid ligand azo‐HU308 triggers Ca2+ influx in pancreatic β‐cells through TRPC channels, independent of CB2 cannabinoid receptors. This reveals a non‐GPCR pathway for cannabinoid modulation of β‐cell Ca2+ dynamics and establishes azo‐HU308 as an optical tool to study cannabinoid signaling through TRP ...
Alexander E. G. Viray, James A. Frank
wiley   +1 more source

Association Between Micronutrient Dietary Intake and Semen Quality: A Cross-Sectional Study [PDF]

open access: green, 2020
Fatemeh Bazarganipour   +6 more
openalex   +1 more source

Decline in human sperm counts during the past 50 years? [PDF]

open access: yes, 2005
There is widespread concern that environmental pollutants acting as xenoestrogens may affect human fertility adversely. Whether this has already made an impact on human fertility worldwide remains debatable at the present stage.
Jayachandra, Srinivasa   +2 more
core  

Aumento de la fertilidad mediante técnicas de procesamiento avanzado de semen: caso clínico [PDF]

open access: yes, 2011
Current equine reproductive clinic aims to improve subfertile stallions semen quality, (which is furthermore affected by the processing protocol) and maintain this quality during storage.
Ayuso-Hernando, M.   +3 more
core   +2 more sources

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