Results 41 to 50 of about 83,183 (339)

CRISPs Function to Boost Sperm Power Output and Motility

open access: yesFrontiers in Cell and Developmental Biology, 2021
Fertilization requires sperm to travel long distances through the complex environment of the female reproductive tract. Despite the strong association between poor motility and infertility, the kinetics of sperm tail movement and the role individual ...
Avinash S. Gaikwad   +11 more
doaj   +1 more source

Hydrodynamic propulsion of human sperm [PDF]

open access: yes, 2009
The detailed fluid mechanics of sperm propulsion are fundamental to our understanding of reproduction. In this paper, we aim to model a human sperm swimming in a microscope slide chamber.
ALLAN A. PACEY   +10 more
core   +1 more source

Fertilization capacity with rainbow trout DNA-damaged sperm and embryo developmental success [PDF]

open access: yes, 2010
Mammalian spermatozoa undergo a strong selection process along the female tract to guarantee fertilization by good quality cells, but risks of fertilization with DNA-damaged spermatozoa have been reported.
Ahmadi   +31 more
core   +1 more source

Association between fine particulate matter bound polycyclic aromatic hydrocarbons and DNA damage of male sperm in Chongqing

open access: yesDi-san junyi daxue xuebao, 2021
Objective To investigate the association between exposure to polycyclic aromatic hydrocarbons(PAHs) in atmospheric fine particulate matter(PM2.5) and sperm DNA damage in Chongqing.
ZHOU Niya, ZHOU Niya, CHEN Qing
doaj   +1 more source

Formation and function of sperm tail structures in association with sperm motility defects† [PDF]

open access: yesBiology of Reproduction, 2017
Male infertility is an increasing problem partly due to inherited genetic variations. Mutations in genes involved in formation of the sperm tail cause motility defects and thus male infertility. Therefore, it is crucial to understand the protein networks required for sperm differentiation.
Lehti, Mari S., Sironen, Anu
openaire   +3 more sources

Qualitative defects with normal sperm counts in a patient attending infertility clinic

open access: yesIndian Journal of Pathology and Microbiology, 2018
Background: Sperm morphology is an important qualitative parameter in semen analysis. Aim: To assess qualitative defects in the semen with normal sperm counts.
Rachna Goyal   +3 more
doaj   +1 more source

Essential Role of CFAP53 in Sperm Flagellum Biogenesis

open access: yesFrontiers in Cell and Developmental Biology, 2021
The sperm flagellum is essential for male fertility. Despite vigorous research progress toward understanding the pathogenesis of flagellum-related diseases, much remains unknown about the mechanisms underlying the flagellum biogenesis itself.
Bingbing Wu   +33 more
doaj   +1 more source

Deficiency of the Tbc1d21 gene causes male infertility with morphological abnormalities of the sperm mitochondria and flagellum in mice.

open access: yesPLoS Genetics, 2020
Approximately 2-15% of couples experience infertility, and around half of these cases are attributed to male infertility. We previously identified TBC1D21 as a sterility-related RabGAP gene derived from infertile men.
Ya-Yun Wang   +7 more
doaj   +1 more source

pH-dependent effects of procaine on equine gamete activation [PDF]

open access: yes, 2019
Procaine directly triggers pH-dependent cytokinesis in equine oocytes and induces hypermotility in stallion spermatozoa, an important event during capacitation. However, procaine-induced hyperactivated motility is abolished when sperm is washed to remove
Gadella, Bart   +3 more
core   +1 more source

Sperm tail axoneme alterations in the Wobbler mouse [PDF]

open access: yesReproduction, 1980
Summary. In Wobbler mice (neurological mutants affected with progressive motor neurone degenerative disease) a defect in sperm tail mobility and axonemal geometry was observed. Similar but less extensive abnormalities were seen in the ciliary axonemes of the ductuli efferentes.
Leestma, J E, Sepsenwol, S
openaire   +2 more sources

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