Results 21 to 30 of about 7,530 (183)

The Microtubule Cytoskeleton during the Early Drosophila Spermiogenesis

open access: yesCells, 2020
Sperm elongation and nuclear shaping in Drosophila largely depends on the microtubule cytoskeleton that in early spermatids has centrosomal and non-centrosomal origins.
Maria Giovanna Riparbelli   +2 more
doaj   +1 more source

Loss of Cep72 affects the morphology of spermatozoa in mice

open access: yesFrontiers in Physiology, 2022
The centrosome regulates mammalian meiosis by affecting recombination, synapsis, chromosome segregation, and spermiogenesis. Cep72 is one of the critical components of the centrosome.
Zhen Chen   +13 more
doaj   +1 more source

Drosophila spermiogenesis [PDF]

open access: yesSpermatogenesis, 2012
Drosophila melanogaster spermatids undergo dramatic morphological changes as they differentiate from small round cells approximately 12 μm in diameter into highly polarized, 1.8 mm long, motile sperm capable of participating in fertilization. During spermiogenesis, syncytial cysts of 64 haploid spermatids undergo synchronous differentiation.
Fabian, Lacramioara, Brill, Julie A.
openaire   +2 more sources

TMPRSS12 Functions in Meiosis and Spermiogenesis and Is Required for Male Fertility in Mice

open access: yesFrontiers in Cell and Developmental Biology, 2022
Serine proteases are involved in many physiological activities as initiators of proteolytic cascades, and some members have been reported to play roles in male reproduction.
Jingjing Zhang   +12 more
doaj   +1 more source

The deubiquitinase cofactor UAF1 interacts with USP1 and plays an essential role in spermiogenesis

open access: yesiScience
Summary: Spermiogenesis defines the final phase of male germ cell differentiation. While multiple deubiquitinating enzymes have been linked to spermiogenesis, the impacts of deubiquitination on spermiogenesis remain poorly characterized.
Ziqi Wang   +14 more
doaj   +1 more source

Spermiogenesis particularities of a sperm storage species: Helicolenus dactylopterus (Teleostei: Scorpaenidae)

open access: yesScientia Marina, 2010
A study of the spermiogenesis and spermatozoa of Helicolenus dactylopterus was conducted. Females of this species have the capacity to store sperm within their ovaries, and male gametes have a considerable cytoplasmic mass surrounding their heads to ...
Silvia Vila   +3 more
doaj   +1 more source

TSNAXIP1 is required for sperm head formation and male fertility

open access: yesReproductive Medicine and Biology, 2023
Purpose TRANSLIN (TSN) and its binding partner TSNAX have been reported to contribute to a wide spectrum of biological activities including spermatogenesis. TSN accompanies specific mRNA transport in male germ cells through intercellular bridges.
Tasrin Sultana   +2 more
doaj   +1 more source

The Drosophila orthologue of the primary ciliary dyskinesia-associated gene, DNAAF3, is required for axonemal dynein assembly

open access: yesBiology Open, 2021
Ciliary motility is powered by a suite of highly conserved axoneme-specific dynein motor complexes. In humans, the impairment of these motors through mutation results in the disease primary ciliary dyskinesia (PCD).
Petra zur Lage   +7 more
doaj   +1 more source

Ultrastructural aspects of spermatogonesis in Metamicrocotyla macracantha (Alexander, 1954) Koratha, 1955 (Monogenea; Microcotylidae)

open access: yesMemorias do Instituto Oswaldo Cruz, 1995
Ultrastructural aspects of spermatogenesis, spermiogenesis and of the mature spermatozoon of a microcotylid monogenean Metamicrocotyla macracantha parasite from Mugil liza, are described. The irregularly-shaped spermatogonia divides by successive mitoses,
Maria de Fatima Diniz Baptista Farias   +2 more
doaj   +1 more source

Subcellular evidence for biogenesis of autophagosomal membrane during spermiogenesis in vivo

open access: yesFrontiers in Physiology, 2016
Although autophagosome formation has attracted substantial attention, the origin and the source of the autophagosomal membrane remains unresolved.
Yufei Huang   +10 more
doaj   +1 more source

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