Results 31 to 40 of about 489,854 (362)
Nature Cell Biology, 2018 The discovery of RNAs (for example, messenger RNAs, non-coding RNAs) in sperm has opened the possibility that sperm may function by delivering additional paternal information aside from solely providing the DNA1.
Yunfang Zhang +30 more
semanticscholar +1 more source
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
Biogenesis and function of tRNA fragments during sperm maturation and fertilization in mammals
Science, 2015 Offspring affected by sperm small RNAs Paternal dietary conditions in mammals influence the metabolic phenotypes of offspring. Although prior work suggests the involvement of epigenetic pathways, the mechanisms remains unclear.
Upasna Sharma +19 more
semanticscholar +1 more source
Sperm cryopreservation: A review on current molecular cryobiology and advanced approaches.
Reproductive Biomedicine Online, 2018 The cryopreservation of spermatozoa was introduced in the 1960s as a route to fertility preservation. Despite the extensive progress that has been made in this field, the biological and biochemical mechanisms involved in cryopreservation have not been ...
M. Hezavehei +6 more
semanticscholar +1 more source
Gamete evolution and sperm numbers: sperm competition versus sperm limitation [PDF]
Proceedings of the Royal Society B: Biological Sciences, 2014 Both gamete competition and gamete limitation can generate anisogamy from ancestral isogamy, and both sperm competition (SC) and sperm limitation (SL) can increase sperm numbers. Here, we compare the marginal benefits due to these two components at any given population level of sperm production using the risk and intensity models in sperm economics. We
Geoff A, Parker, Jussi, Lehtonen
openaire +2 more sources
Sexual selection in a transparent worm : insights from fluorescent sperm [PDF]
, 2015 Sexual selection is a potent source of selection underlying the evolution of sexual dimorphism, reproductive strategies and mating systems. Although sexual selection was initially thought to occur exclusively at the pre-copulatory stage (e.g., contests ...
Marie-Orleach, Lucas
core +1 more source
Scientific Reports, 2023 Because the total gene copy number remains constant and all genes are normally expressed, carriers of balanced chromosomal translocations usually have a normal phenotype but are able to produce many different types of gametes during meiosis, and ...
Xiaoqi Zeng +6 more
doaj +1 more source
Advances in Cryopreservation of Bull Sperm
Frontiers in Veterinary Science, 2019 Cryopreservation of semen and artificial insemination have an important, positive impact on cattle production, and product quality. Through the use of cryopreserved semen and artificial insemination, sperm from the best breeding bulls can be used to ...
M. R. Ugur +8 more
semanticscholar +1 more source
Small RNAs gained during epididymal transit of sperm are essential for embryonic development in mice
bioRxiv, 2018 The small RNA payload of mammalian sperm undergoes dramatic remodeling during development, as several waves of microRNAs and tRNA fragments are shipped to sperm during post-testicular maturation in the epididymis.
C. Conine +4 more
semanticscholar +1 more source
Sperm competition games: optimal sperm allocation in response to the size of competing ejaculates
, 2007 Engqvist L, Reinhold K. Sperm competition games: optimal sperm allocation in response to the size of competing ejaculates. Proceedings of the Royal Society B.
Reinhold, Klaus +1 more
core +1 more source