Results 21 to 30 of about 1,865,436 (219)

MITOCHONDRIAL REACTIVE OXYGEN SPECIES (ROS) AS SIGNALLING MOLECULES OF INTRACELLULAR PATHWAYS TRIGGERED BY THE CARDIAC RENIN-ANGIOTENSIN II-ALDOSTERONE SYSTEM (RAAS).

open access: yesFrontiers in Physiology, 2013
Mitochondria represent major sources of basal reactive oxygen species (ROS) production of the cardiomyocyte. The role of ROS as signalling molecules that mediate different intracellular pathways has gained increasing interest among physiologists in the ...
Verónica Celeste De Giusti   +5 more
doaj   +1 more source

Reactive oxygen species in disease: Rebuttal of a conventional concept

open access: yesJournal of Controversies in Biomedical Research, 2015
The production of intracellular reactive oxygen species and reactive nitrogen species has long been proposed as leading to the random deleterious modification of macromolecules (i.e., nucleic acids, proteins) with an associated progressive development of
Luis Vitetta   +2 more
doaj   +1 more source

Cellular Tolerance Induced by Chronic Opioids in the Central Nervous System

open access: yesFrontiers in Systems Neuroscience, 2022
Opioids are powerful analgesics that elicit acute antinociceptive effects through their action the mu opioid receptor (MOR). However opioids are ineffective for chronic pain management, in part because continuous activation of MORs induces adaptive ...
Sweta Adhikary, John T. Williams
doaj   +1 more source

Precision cosmology from future lensed gravitational wave and electromagnetic signals [PDF]

open access: yes, 2017
The standard siren approach of gravitational wave cosmology appeals to the direct luminosity distance estimation through the waveform signals from inspiralling double compact binaries, especially those with electromagnetic counterparts providing ...
Biesiada, Marek   +4 more
core   +3 more sources

Information Content in Stochastic Pulse Sequences of Intracellular Messengers

open access: yesFrontiers in Physics, 2018
Many cell signaling pathways rely on oscillatory messenger concentrations even to transduce aperiodic environmental changes. The universal second messenger calcium, Ca2+ often exhibits pulsatile behavior in the presence of constant concentrations of ...
Alan Givré   +3 more
doaj   +1 more source

Physiological Sensing of Carbon Dioxide/Bicarbonate/pH via Cyclic Nucleotide Signaling

open access: yesSensors, 2011
Carbon dioxide (CO2) is produced by living organisms as a byproduct of metabolism. In physiological systems, CO2 is unequivocally linked with bicarbonate (HCO3−) and pH via a ubiquitous family of carbonic anhydrases, and numerous biological processes are
Lonny R. Levin, Jochen Buck
doaj   +1 more source

Anormalidades neuropatológicas e neuroquímicas no transtorno afetivo bipolar Neuropathological and neurochemical abnormalities in bipolar disorder

open access: yesBrazilian Journal of Psychiatry, 2004
OBJETIVOS: Estudos pós-mortem, farmacológicos, de neuroimagem e em modelos animais têm demonstrado uma possível associação de mecanismos de sinalização intracelular na fisiopatologia do transtorno afetivo bipolar (TAB).
Benício Noronha Frey   +4 more
doaj   +1 more source

Second messenger systems and adaptation. [PDF]

open access: yesGut, 1987
Adaptive changes represent shifts in the equilibrium state of biologic systems in reponse to long standing alterations in their surrounding environment. Adaptation encompasses a variety of cellular changes ranging from very specific responses, such as variation in the production of a single protein, to broader responses including alterations in the ...
openaire   +2 more sources

Luciferase complementation based-detection of G-protein-coupled receptor activity

open access: yesBioTechniques, 2018
Protein complementation assays (PCA) are used as pharmacological tools, enabling a wide array of applications, ranging from studies of protein–protein interactions to second messenger effects.
Hideaki Yano   +3 more
doaj   +1 more source

Ceramide mediates radiation-induced germ cell apoptosis via regulating mitochondria function and MAPK factors in Caenorhabditis elegans

open access: yesEcotoxicology and Environmental Safety, 2021
Studies about radiation damage in vivo are very significant for healthy risk assessment as well as cancer radiotherapy. Ceramide as a second messenger has been found to be related to radiation-induced apoptosis. However, the detailed mechanisms in living
Yaning Yang   +6 more
doaj   +1 more source

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