Results 11 to 20 of about 754,638 (394)
Sperm design and sperm function [PDF]
Biology Letters, 2006 Spermatozoa vary enormously in their form and dimensions, both between and within species, yet how this variation translates into fertilizing efficiency is not known. Sperm swimming velocity is a key determinant of male fertilization success, but previous efforts to identity which sperm phenotypic traits are associated with swimming ...
Malo, A +5 more
openaire +3 more sources
Sperm Cholesterol Content Modifies Sperm Function and TRPV1-Mediated Sperm Migration [PDF]
International Journal of Molecular Sciences, 2021 Transient receptor potential channels-vanilloid receptor 1 (TRPV1) regulates thermotaxis in sperm-oriented motility. We investigated the role of membrane cholesterol (Chol) on TRPV1-mediated human sperm migration. Semen samples were obtained from five normozoospemic healthy volunteers.
De Toni L. +9 more
openaire +2 more sources
Reproductive Biology and Endocrinology, 2021 Background Published studies have shown contradictory results regarding the relationship between somatometric parameters and varicoceles. We performed a systematic review and meta-analysis to investigate the possible effects of age, height, weight, and ...
Runqing Li +3 more
doaj +1 more source
Sperm DNA Fragmentation: A New Guideline for Clinicians
The World Journal of Men's Health, 2020 Sperm DNA integrity is crucial for fertilization and development of healthy offspring. The spermatozoon undergoes extensive molecular remodeling of its nucleus during later phases of spermatogenesis, which imparts compaction and protects the genetic ...
A. Agarwal +23 more
semanticscholar +1 more source
Molecular Changes Induced by Oxidative Stress that Impair Human Sperm Motility
Antioxidants, 2020 A state of oxidative stress (OS) and the presence of reactive oxygen species (ROS) in the male reproductive tract are strongly correlated with infertility.
K. Nowicka-Bauer, B. Nixon
semanticscholar +1 more source
Life, 2022 We wish to congratulate Boitrelle and colleagues for their comprehensive critical review on the Sixth Edition of the WHO Laboratory Manual for Human semen examination [...]
Francesco Pallotti +2 more
doaj +1 more source
International Journal of Molecular Sciences, 2020 Sperm cryopreservation represents a powerful tool for livestock breeding. Several efforts have been made to improve the efficiency of sperm cryopreservation in different ruminant species.
P. Peris-Frau +6 more
semanticscholar +1 more source
Cryopreservation of single-sperm: where are we today?
Reproductive Biology and Endocrinology, 2020 Background Patients with severe oligospermia and nonobstructive azoospermia have very limited numbers of viable sperm in their epididymal and testicular samples. Thus, cryopreservation of their sperm is performed to avoid repeated sperm retrievals and to
Shasha Liu, Fuping Li
doaj +1 more source
The evolution of sperm morphometry in pheasants [PDF]
, 2007 Postcopulatory sexual selection is thought to be a potent evolutionary force driving the diversification of sperm shape and function across species. In birds, insemination and fertilisation are separated in time and sperm storage increases the duration
Birkhead, T.R. +5 more
core +3 more sources
Sperm-Hybrid Micromotor for Targeted Drug Delivery. [PDF]
ACS Nano, 2017 A sperm-driven micromotor is presented as a targeted drug delivery system, which is appealing to potentially treat diseases in the female reproductive tract.
Haifeng Xu +5 more
semanticscholar +1 more source