Results 51 to 60 of about 83,159 (258)

The viability of cryopreserved tilapia spermatozoa

open access: yes, 1989
Tilapia (Oreochromis spp.) spermatozoa protected with 12.5% methanol (MeOH) in fish Ringers, stored in 1.5-ml cryotubes and held in a vapour phase liquid nitrogen refrigerator remained viable for at least 13 months.
Rana, Kausik, McAndrew, Brendan
core   +1 more source

Successful ICSI in Mice Using Caput Epididymal Spermatozoa

open access: yesFrontiers in Cell and Developmental Biology, 2019
Spermatozoa undergo their last phase of spermiogenesis, known as maturation, as they pass through the epididymis. A recent report indicates that mouse immature spermatozoa retrieved from the caput epididymis for intracytoplasmic sperm injection (ICSI ...
Raúl Fernández-González   +6 more
doaj   +1 more source

The Effect of Cryopreservation on Cytochrome Oxidase1 (CO1) Gene and the Relationship with Spermatozoa Motility of Albino Pangasius catfish (Pangasionodon hypophthalmus)

open access: yesHayati Journal of Biosciences, 2023
Cryopreservation is a technique for storing cells and tissues at very low temperatures for the possible usage of the stored cells and tissues throughout the year.
Uswatun Hasanah   +4 more
doaj   +1 more source

Xenogeneic Mitochondrial Transplantation Improves Selected Age‐Associated Phenotypes in Mice

open access: yesAdvanced Science, EarlyView.
Yak‐derived xenogeneic mitochondrial transplantation improves selected age‐associated phenotypes in mice, enhances mitochondrial functional readouts, and engages host mitochondrial quality‐control pathways. Broad tissue biodistribution, increased ATP production and mtDNA copy number, reduced ROS levels and dysfunctional mitochondria, improved motility ...
Wenpeng Li   +5 more
wiley   +1 more source

EPIDIDYMAL SPERMATOZOA QUALITY OF ETAWA CROSSBREED GOAT IN TRIS EXTENDER SUPPLEMENTED WITH VARIOUS LACTOSE CONCENTRATIONS

open access: yesJurnal Kedokteran Hewan, 2017
This research was conducted to investigate the effect of various concentrations of lactose supplementation in Tris extender for maintaining the quality of Etawa crossbreed goat epididymal spermatozoa stored at 3-5° C.
Muhammad Riyadhi   +3 more
doaj   +1 more source

NAD+ Metabolism Licenses Zygotic Genome Activation via PARP7‐Mediated ADP‐Ribosylation of UHRF1 in Mouse Early Embryos

open access: yesAdvanced Science, EarlyView.
This study uncovers a metabolic‐epigenetic axis licensing zygotic genome activation (ZGA) in mouse embryos. A developmental decline in NAD+ levels activates PARP7, which mono‐ADP‐ribosylates and stabilizes UHRF1. This modification promotes the establishment of permissive histone acetylation marks, thereby facilitating timely ZGA.
Guangyi Cao   +13 more
wiley   +1 more source

CD5 expression by human ejaculated spermatozoa

open access: yesMiddle East Fertility Society Journal, 2022
Background A complex of effector and predominant regulatory immune responses are induced in the female reproductive tract (FRT) due to insemination that is necessary to achieve pregnancy.
Nasrin Sereshki   +4 more
doaj   +1 more source

Biallelic Germline Inactivation of HROB Causes Primary Gonadal Insufficiency and is Potentially Associated with Colonic Polyposis Predisposition

open access: yesAmerican Journal of Medical Genetics Part A, EarlyView.
ABSTRACT The Homologous Recombination Factor With OB‐Fold (HROB) plays a role in homologous recombination and DNA replication, where it enhances the MCM8‐MCM9 helicase complex activity. Recent findings link biallelic germline HROB variants to primary gonadal insufficiency (hypergonadotropic hypogonadism), a phenotype also associated with MCM8/MCM9 ...
Noah C. Helderman   +15 more
wiley   +1 more source

Prevention of fertilization by exposure of hamster eggs to soluble acrosin [PDF]

open access: yes, 1977
Incubation of hamster eggs with trypsin or chymotrypsin, but not with a series of glycosidases or lipases, prevents capacitated spermatozoa from binding to the zona pellucida so that fertilization is prevented (Hartmann & Gwatkin, 1971; Gwatkin ...
L. Wudl   +7 more
core  

Caractérisation de CRISP2 dans les spermatozoïdes humains [PDF]

open access: yes, 2022
editorial reviewedThe Cystein-RIch Secretory Protein (CRISP) family gathers proteins recognized as key players in male fertility. Although most of the knowledge on the CRISPs comes from rodent models, three CRISPs have been identified in humans.
Simon, Jean-François   +6 more
core  

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