Results 71 to 80 of about 26,767 (249)

Live-cell microscopy of meiosis in spermatocytes

open access: yes, 2018
For the analysis of the molecular mechanisms underlying mammalian meiosis, the establishment of a transient gene expression system for meiocytes has been long awaited.
Watanabe, Yoshinori   +3 more
core   +1 more source

Transient protection from heat-stress induced apoptotic stimulation by metastasis-associated protein 1 in pachytene spermatocytes. [PDF]

open access: yesPLoS ONE, 2011
BackgroundDeregulated thermal factors have been frequently implicated in the pathogenesis of male infertility, but the molecular basis through which certain responses are directed remain largely unknown.
Wei Li   +9 more
doaj   +1 more source

Doxorubicin and 4-Hydroperoxycyclophosphamide Alter Mitochondrial Dynamics and miR-34 Expression in Spermatogonia and Spermatocytes In Vitro. [PDF]

open access: yesBasic Clin Pharmacol Toxicol
ABSTRACT Doxorubicin (DOX) and cyclophosphamide (CP) are widely used chemotherapeutic agents with known gonadotoxic effects. Since miRNAs play a key role in the transcriptional regulation of spermatogenesis, they are suggested as biomarkers for male infertility.
Öztatlıcı H   +4 more
europepmc   +2 more sources

Heat Stress in Quail: Impacts on Health and Productivity, and Mitigation Strategies

open access: yesAnimal Research and One Health, EarlyView.
Heat stress disrupts physiological homeostasis in quail, inducing oxidative stress, immune dysregulation, and metabolic imbalance, which impair growth, reproduction, product quality, and welfare. Integrating nutritional, environmental, and genetic–epigenetic strategies enhances thermotolerance, sustains productivity, and supports climate‐smart quail ...
T. A. Eletu   +6 more
wiley   +1 more source

Use of Clotrimazole in Finfish Aquaculture: Mechanistic Insights, Limitations, and Future Directions for Antifungal Therapy

open access: yesAnimal Research and One Health, EarlyView.
This review critically evaluates clotrimazole as a potential antifungal for finfish aquaculture, highlighting strong mechanistic and in vitro efficacy against aquatic mycoses alongside major gaps in in vivo evidence, toxicokinetics, residue safety, and environmental risk, outlining priorities for responsible therapeutic development and regulatory ...
Arya Sen   +2 more
wiley   +1 more source

Gpat2 was expressed in mouse primary spermatocytes.

open access: yes, 2013
A) Adult mouse testis sections were hybridized in situ with a Gpat2 specific antisense probe (left panels) and the corresponding sense probe (right panels). Magnification: 100× (first row) and 600× (second row).
Maria R. Gonzalez-Baro (312240)   +5 more
core   +1 more source

Heat stress in spermatogenesis: a redox‐dependent decision network linking ROS, autophagy, and regulated cell death

open access: yesBiological Reviews, EarlyView.
ABSTRACT Heat stress (HS) is an increasing threat to male reproductive health, disrupting spermatogenesis through complex and interdependent cellular responses within the seminiferous epithelium. Although excessive reactive oxygen species (ROS) production is a hallmark of HS, ROS also act as central regulators of cell fate decisions beyond their role ...
Ribrio Ivan Tavares Pereira Batista
wiley   +1 more source

SPERMATOGONIES ET SPERMATOCYTES FLAGELLÉS CHEZ POECILIA RETICULATA (TÉLÉOSTÉENS CYPRINODONTIFORMES)

open access: yes, 1969
International audienceLa présence d'un flagelle sur des spermatogonies et spermatocytes et de 2 flagelles sur des spermatides est décrite chez le Guppy (Poecilia reticulata).
Fléchon, J.-E.   +5 more
core   +1 more source

Male Hybrid Sterility in the Mule Duck is Associated with Meiotic Arrest in Primary Spermatocytes

open access: yesThe Journal of Poultry Science, 2013
Hybrid sterility is a postzygotic reproductive isolation mechanism that prevents successful interbreeding between different species. The mule duck, an intergeneric F1 hybrid between the domestic duck (Anas platyrhynchos) and Muscovy duck (Cairina ...
Fhamida B. Islam   +5 more
doaj   +1 more source

Kinesin-5 Eg5 is essential for spindle assembly and chromosome alignment of mouse spermatocytes

open access: yesCell Division, 2020
Background Microtubule organization is essential for bipolar spindle assembly and chromosome segregation, which contribute to genome stability. Kinesin-5 Eg5 is known to be a crucial regulator in centrosome separation and spindle assembly in mammalian ...
Zhen-Yu She   +7 more
doaj   +1 more source

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