Results 91 to 100 of about 37,194 (217)
Experimental Physiology, EarlyView.Abstract Skeletal muscle adaptation to contractile activity is modulated by redox signalling, primarily through reactive oxygen species (ROS) such as hydrogen peroxide (H2O2). Early research framed ROS as deleterious byproducts of exercise, but subsequent studies have established their roles as signalling molecules involved in mitochondrial biogenesis,
Malcolm J. Jackson
wiley +1 more source
Experimental Physiology, EarlyView.Abstract A lack of consensus remains on whether normobaric hypoxia (NH) and hypobaric hypoxia (HH) may differentially impact physiological factors affecting cerebrovascular regulation, particularly with an additional strenuous exercise component. We sought to compare the acute effects of NH and HH on global cerebral blood flow (gCBF) at an altitude ...
Rachel Turner +3 more
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Frontiers in ChemistryQuenching peroxynitrite (a reactive oxidant species) is a vital process in biological systems and environmental chemistry as it maintains redox balance and mitigates damaging effects in living cells and the environment.
Yuan Xue +5 more
doaj +1 more source
The Journal of Physiology, EarlyView.Abstract figure legend Metabolic stimulation improves bioenergetics, redox state, hydration and hematologic indices of circulating erythrocytes from sickle cell mice. Retained mitochondria in circulating RBCs from sickle mice are a source of RBC ATP as mitochondria function (ETC, electron transport chain) inhibitors [rotenone, a mitochondrial complex I
Luis E. F. Almeida +4 more
wiley +1 more source
Intramuscular pathways of maladaptation in overtraining syndrome
The Journal of Physiology, EarlyView.Abstract figure legend The transition from adaptive overreaching to maladaptive overtraining and mechanisms through which excessive training load can lead to performance decline. Four interconnected pathophysiological domains are highlighted: neural fatigue, involving both central and peripheral components such as altered sensory feedback and reflex ...
Emily Shorter +4 more
wiley +1 more source
Mitochondrial oxidative stress, calcium and dynamics in cardiac ischaemia‐reperfusion injury
The Journal of Physiology, EarlyView.Abstract figure legend Heart attack causes ischaemia–reperfusion injury in cardiomyocytes. Mitochondria generate reactive oxygen species (ROS), leading to oxidative stress. High levels of mitochondrial calcium (Ca2+) activate the mitochondrial permeability transition pore (mPTP), and excess ROS levels can lower the Ca2+ required to activate the mPTP ...
Emily Rozich +5 more
wiley +1 more source
The Journal of Physiology, EarlyView.Abstract figure legend In rat and human adult ventricular myocytes, acute hyperglyceaemia (Glucose) causes increased glucose uptake (via GLUT) leading to O‐GlcNAcylation of CaMKII at Ser280, such that CaMKII activates NADPH oxidase 2 (NOX2) to increase cytosolic reactive oxygen species (ROS). That perturbs the ROS to Antioxidant (AntiOx) balance.
Shan Lu +7 more
wiley +1 more source
Born early, age fast: Consequences of premature birth on chronic disease and accelerated ageing
The Journal of Physiology, EarlyView.Abstract figure legend ELGANs are exposed to several postnatal pro‐oxidant stressors, including ambient and supplemental oxygen, mechanical ventilation, infections, hyperalimentation, excessive glucocorticoids and intermittent hypoxia. Since endogenous antioxidant defences are underdeveloped, this imbalance promotes oxidative stress and inflammation ...
Estelle B. Gauda +5 more
wiley +1 more source
Вестник Кемеровского государственного университета, 2014 The photolysis of potassium, rubidium and cesium crystalline nitrates under light with the photon energy of 5.58 eV was investigated. Nitrite and peroxynitrite are the photolysis end-products.
L. D. Kriger +2 more
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