Results 31 to 40 of about 9,958 (250)

TRPV4 is the temperature-sensitive ion channel of human sperm

open access: yeseLife, 2018
Ion channels control the ability of human sperm to fertilize the egg by triggering hyperactivated motility, which is regulated by membrane potential, intracellular pH, and cytosolic calcium.
Nadine Mundt   +2 more
doaj   +1 more source

Capacitation induces changes in metabolic pathways supporting motility of epididymal and ejaculated sperm

open access: yesFrontiers in Cell and Developmental Biology, 2023
Mammalian sperm require sufficient energy to support motility and capacitation for successful fertilization. Previous studies cataloging the changes to metabolism in sperm explored ejaculated human sperm or dormant mouse sperm surgically extracted from ...
Melanie Balbach   +8 more
doaj   +1 more source

Hyperactivated endolysosomal trafficking in melanoma

open access: yesOncotarget, 2015
Cutaneous melanoma is an increasingly frequent solid tumor that accounts for 80% of skin cancer-related deaths. Characterized by a complex and heterogeneous genetic background and a notorious functional plasticity, melanoma has shifted from a “black box” to a paradigm of how basic research can be successfully translated into significant improvements of
Alonso-Curbelo, Direna, Soengas, MS
openaire   +3 more sources

Amygdala hyperactivation in untreated depressed individuals [PDF]

open access: yesPsychiatry Research: Neuroimaging, 2009
The amygdala participates in the detection and control of affective states, and has been proposed to be a site of dysfunction in affective disorders. To assess amygdala processing in individuals with unipolar depression, we applied a functional MRI (fMRI) paradigm previously shown to be sensitive to amygdala function.
Peluso, Marco A. M.   +10 more
openaire   +3 more sources

Modulation of the Biocatalytic Properties of a Novel Lipase from Psychrophilic Serratia sp. (USBA-GBX-513) by Different Immobilization Strategies

open access: yesMolecules, 2021
In this work, the effect of different immobilization procedures on the properties of a lipase obtained from the extremophilic microorganism Serratia sp.
Mónica Ruiz   +7 more
doaj   +1 more source

The Chemosensing Role of CatSper in Mammalian Sperm: An Updated Review

open access: yesCurrent Issues in Molecular Biology, 2023
After sperm enter the female reproductive tract, the physicochemical and biochemical microenvironment undergoes significant changes. In particular, the large changes in various ions encountered by sperm may alter the physiology of sperm, ultimately ...
Sulun Ke, Tao Luo
doaj   +1 more source

Hyperactivation in human semen and sperm subpopulations by selected calcium modulators [PDF]

open access: yes, 2014
Magister Scientiae (Medical Bioscience) - MSc(MBS)A functional sperm is critical for successful fertilization in order to deliver an intact genome to the site of fertilization. It is often characterized by high motility and normal morphology.
Ntanjana, Nomfundo
core   +1 more source

Pharmacological Inactivation of CatSper Blocks Sperm Fertilizing Ability Independently of the Capacitation Status of the Cells: Implications for Non-hormonal Contraception

open access: yesFrontiers in Cell and Developmental Biology, 2021
Cation channel of sperm (CatSper), the main sperm-specific Ca2+ channel, plays a key role in mammalian fertilization, and it is essential for male fertility, becoming an attractive target for contraception.
Ludmila Curci   +4 more
doaj   +1 more source

PKR deficiency delays vascular aging via inhibiting GSDMD-mediated endothelial cell hyperactivation

open access: yes, 2022
Summary: Vascular aging is an independent risk factor for cardiovascular diseases, but the regulatory mechanism is not clearly understood. In this study, we found that endothelial PKR activity is elevated in aging aorta tissues, which is accompanied with
Xiqing Tan   +11 more
core   +1 more source

P-REX1-Independent, Calcium-Dependent RAC1 Hyperactivation in Prostate Cancer [PDF]

open access: yes, 2020
The GTPase Rac1 is a well-established master regulator of cell motility and invasiveness contributing to cancer metastasis. Dysregulation of the Rac1 signaling pathway, resulting in elevated motile and invasive potential, has been reported in multiple ...
Garcia-Mata, Rafael   +7 more
core   +1 more source

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