Results 21 to 30 of about 70,974 (235)

CARDIOVASCULAR EFFECTS OF PEROXYNITRITE [PDF]

Clinical and Experimental Pharmacology and Physiology, 2007
SUMMARYPeroxynitrite (PN) is formed in biological systems from the reaction of nitric oxide (·NO) with superoxide (·) and both exist as free radicals. By itself, PN is not a free radical, but it can generate nitrogen dioxide (·NO2) and carbonate radical (·) upon reaction with CO2.The reaction of CO2constitutes a major pathway for the disposition of PN ...
Rao M, Uppu, Bobby D, Nossaman, Anthony J, Greco, Alex, Fokin, Subramanyam N, Murthy, Vivian A, Fonseca, Philip J, Kadowitz   +6 more
openaire   +2 more sources

Mitochondrial stress in advanced fibrosis and cirrhosis associated with chronic hepatitis B, chronic hepatitis C, or nonalcoholic steatohepatitis

Hepatology, EarlyView., 2022
Adaptive mitochondrial mechanisms allow mitochondrial resilience and prevent the worsening of fibrosis, while deregulation of these mechanisms promotes the progression from no/minimal‐mild (F0‐F2) fibrosis to advanced fibrosis and cirrhosis (F3‐F4). Abstract Background and Aims Hepatitis B virus (HBV) infection causes oxidative stress (OS) and alters ...
Dimitri Loureiro, Issam Tout, Stéphanie Narguet, Cheikh Mohamed Bed, Morgane Roinard, Ahmad Sleiman, Nathalie Boyer, Nathalie Pons‐Kerjean, Corinne Castelnau, Nathalie Giuly, Dorothy Tonui, Vassili Soumelis, Jamel El Benna, Patrick Soussan, Richard Moreau, Valérie Paradis, Abdellah Mansouri, Tarik Asselah   +17 more
wiley   +1 more source

The Balancing of Peroxynitrite Detoxification between Ferric Heme-Proteins and CO₂: The Case of Zebrafish Nitrobindin

Antioxidants, 2022
Nitrobindins (Nbs) are all-β-barrel heme proteins and are present in prokaryotes and eukaryotes. Although their function(s) is still obscure, Nbs trap NO and inactivate peroxynitrite.
Giovanna De Simone, Andrea Coletta, Alessandra di Masi, Massimo Coletta, Paolo Ascenzi   +4 more
doaj   +1 more source

Crucial role of local peroxynitrite formation in neutrophil-induced endothelial cell activation [PDF]

, 2003
Introduction and methods: The reaction of superoxide anions and NO not only results in a decreased availability of NO, but also leads to the formation of peroxynitrite, the role of which in the cardiovascular system is still discussed controversially. In
Gloe, Torsten, Keller, Matthias, Klauss, Volker, Krötz, Florian, Pohl, Ulrich, Schiele, Thomas M., Sohn, Hae-Young, Theisen, Karl, Zahler, Stefan   +8 more
core   +1 more source

Potential Benefits of Peroxynitrite [PDF]

The Open Pharmacology Journal, 2008
Peroxynitrite (PN) is generated by the reaction of nitric oxide (NO) and superoxide in one of the most rapid reactions in biology. Studies have reported that PN is a cytotoxic molecule that contributes to vascular injury in a number of disease states. However, it has become apparent that PN has beneficial effects including vasodilation, inhibition of ...
Bobby D, Nossaman, Philip J, Kadowitz
openaire   +2 more sources

Peroxynitrite-induced luminol chemiluminescence [PDF]

Biochemical Journal, 1993
Vascular endothelial cells, smooth muscle cells, macrophages, neutrophils, Kupffer cells and other diverse cell types generate superoxide (O2.-) and nitric oxide (.NO), which can react to form the potent oxidant peroxynitrite anion (ONOO-). Peroxynitrite reacted with luminol to yield chemiluminescence which was greatly enhanced by bicarbonate.
R, Radi, T P, Cosgrove, J S, Beckman, B A, Freeman   +3 more
openaire   +2 more sources

Peroxynitrite‐mediated oxidative protein modifications [PDF]

FEBS Letters, 1995
Proteins are targets of reactive species and detection of oxidatively modified proteins is often used as an index of oxidative stress. Peroxynitrite is a strong oxidant formed by reaction of nitric oxide with superoxide. Using fatty acid‐free bovine serum albumin as a model we examined peroxynitrite‐mediated protein modifications.
Ischiropoulos, Harry, Al-Mehdi, Abu B.
openaire   +2 more sources

The role of the host—Neutrophil biology

Periodontology 2000, EarlyView., 2023
Abstract Neutrophilic polymorphonuclear leukocytes (neutrophils) are myeloid cells packed with lysosomal granules (hence also called granulocytes) that contain a formidable antimicrobial arsenal. They are terminally differentiated cells that play a critical role in acute and chronic inflammation, as well as in the resolution of inflammation and wound ...
Iain L. C. Chapple, Josefine Hirschfeld, Alpdogan Kantarci, Asaf Wilensky, Lior Shapira   +4 more
wiley   +1 more source

Peroxynitrite decomposition catalyst prevents apoptotic cell death in a human astrocytoma cell line incubated with supernatants of HIV-infected macrophages

BMC Neuroscience, 2002
Background Oxidative stress has shown to contribute in the mechanisms underlying apoptotic cell death occuring in AIDS-dementia complex. Here we investigated the role of peroxynitrite in apoptosis occurring in astroglial cells incubated with supernatants
Perno Carlo, Rotiroti Domenicantonio, Cufari Antonio, Palma Ernesto, Iannone Michelangelo, Paolino Donatella, Salvemini Daniela, Muscoli Carolina, Aquaro Stefano, Mollace Vincenzo   +9 more
doaj   +1 more source

Paradoxical roles of antioxidant enzymes:Basic mechanisms and health implications [PDF]

, 2015
Reactive oxygen species (ROS) and reactive nitrogen species (RNS) are generated from aerobic metabolism, as a result of accidental electron leakage as well as regulated enzymatic processes.
Amit R. Reddi, Arne Holmgren, Chan PH, Chen EP, Chu FF, Daiber A, Elias S. J. Arnér, Geismann C, Hogan B, Jaarsma D, Jian-Hong Zhu, Jin R, Leitzmann C, Li JJ, Li JJ, Lu YP, Makino N, Miranda-Vizuete A, Mirochnitchenko O, Motoori S, Mulder DW, Ogata M, Oury TD, Papaioannou V, Radi R, Sandbach JM, Takahara S, Thimmulappa RK, Tome ME, Vogel U, Wang F, Wen JK, Wen-Hsing Cheng, Wispe JR, Woychik RP, Xin Gen Lei, Ye-Shih Ho, Yongping Bao, Yoshida T   +38 more
core   +1 more source