Results 41 to 50 of about 548,863 (305)

Dysfunctional mitochondrial processes contribute to energy perturbations in the brain and neuropsychiatric symptoms

open access: yesFrontiers in Pharmacology, 2023
Mitochondria are complex endosymbionts that evolved from primordial purple nonsulfur bacteria. The incorporation of bacteria-derived mitochondria facilitates a more efficient and effective production of energy than what could be achieved based on ...
Pascal Büttiker   +7 more
doaj   +1 more source

Reactive Nitrogen Species Reactivities with Nitrones: Theoretical and Experimental Studies [PDF]

open access: yesChemical Research in Toxicology, 2012
Reactive nitrogen species (RNS) such as nitrogen dioxide ((•)NO(2)), peroxynitrite (ONOO(-)), and nitrosoperoxycarbonate (ONOOCO(2)(-)) are among the most damaging species present in biological systems due to their ability to cause modification of key biomolecular systems through oxidation, nitrosylation, and nitration.
Kevin M, Nash   +2 more
openaire   +2 more sources

Oxidative DNA Damage and Repair: Mechanisms, Mutations, and Relation to Diseases

open access: yesAntioxidants, 2023
Oxidative DNA damage (ODD) by reactive oxygen species (ROS) or reactive nitrogen species (RNS) is an inevitable tradeoff for using oxidation processes by living cells as a source of energy [...]
Marina Roginskaya, Yuriy Razskazovskiy
doaj   +1 more source

Glutathione Participation in the Prevention of Cardiovascular Diseases

open access: yesAntioxidants, 2021
Cardiovascular diseases (CVD) (such as occlusion of the coronary arteries, hypertensive heart diseases and strokes) are diseases that generate thousands of patients with a high mortality rate worldwide.
Deyamira Matuz-Mares   +3 more
doaj   +1 more source

Do Reactive Oxygen and Nitrogen Species Have a Similar Effect on Digestive Processes in Carnivorous Nepenthes Plants and Humans?

open access: yesBiology, 2023
Carnivorous plants attract animals, trap and kill them, and absorb nutrients from the digested bodies. This unusual (for autotrophs) type of nutrient acquisition evolved through the conversion of photosynthetically active leaves into specialised organs ...
Urszula Krasuska   +4 more
doaj   +1 more source

Reactive nitrogen in Asian continental outflow over the western Pacific: Results from the NASA Transport and Chemical Evolution over the Pacific (TRACE-P) airborne mission [PDF]

open access: yes, 2003
We present here results for reactive nitrogen species measured aboard the NASA DC-8 aircraft during the Transport and Chemical Evolution over the Pacific (TRACE-P) mission. The large-scale distributions total reactive nitrogen (NOy,sum = NO + NO2 + HNO3 +
Atlas, Elliot   +13 more
core   +2 more sources

Evaluation of melatonin levels in saliva in periodontal health and disease: A clinico-biochemical study

open access: yesJournal of International Clinical Dental Research Organization, 2010
Background: Melatonin, a secretory product of the vertebrate pineal gland, activates several elements of the immune system that reduce tissue destruction during the inflammatory response, either directly by scavenging free radical, reactive oxygen ...
Nilkanth Mhaske   +3 more
doaj   +1 more source

Periodontal disease etiology and role of oxidative stress

open access: yesMagazin of Al-Kufa University for Biology, 2023
The term "periodontal disease" is used to describe an array of inflammatory conditions that can affect the periodontium. In response to the challenge given by the bacteria, the gingival and periodontal tissues undergo a complicated chain of events ...
Dhamyaa Jabbar
doaj   +1 more source

2-Styrylchromones: Cytotoxicity and Modulation of Human Neutrophils’ Oxidative Burst

open access: yesPharmaceuticals, 2022
Neutrophils are polymorphonuclear leukocytes recruited to sites of acute inflammation, in response to pathogen invasion and tissue injury. The modulation of their activity, especially oxidative burst, may be important to control the inflammatory process.
Mariana Lucas   +5 more
doaj   +1 more source

Bioimaging Probes for Reactive Oxygen Species and Reactive Nitrogen Species

open access: yesJournal of Clinical Biochemistry and Nutrition, 2009
Reactive oxygen species (ROS) play key roles in many pathogenic processes, including carcinogenesis, inflammation, ischemia-reperfusion injury and signal transduction. Also, reactive nitrogen species (RNS) cause various biological events such as neurodegenerative disorders.
openaire   +3 more sources

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