Results 21 to 30 of about 550,413 (349)

DNA damage and reactive nitrogen species are barriers to Vibrio cholerae colonization of the infant mouse intestine. [PDF]

PLoS Pathogens, 2011
Ingested Vibrio cholerae pass through the stomach and colonize the small intestines of its host. Here, we show that V. cholerae requires at least two types of DNA repair systems to efficiently compete for colonization of the infant mouse intestine. These
Bryan W Davies, Ryan W Bogard, Nicole M Dupes, Tyler A I Gerstenfeld, Lyle A Simmons, John J Mekalanos   +5 more
doaj   +1 more source

Adventitious Root Formation in Plants: The Implication of Hydrogen Peroxide and Nitric Oxide

Antioxidants, 2023
Adventitious root formation is defined as the formation of new roots on above-ground plant parts and is considered crucial for the survival of a plant under harsh environmental conditions (i.e., flooding, salt stress, and other abiotic stresses) as well ...
Peter Anargyrou Roussos
doaj   +1 more source

DNA Checkpoint and Repair Factors Are Nuclear Sensors for Intracellular Organelle Stresses-Inflammations and Cancers Can Have High Genomic Risks. [PDF]

, 2018
Under inflammatory conditions, inflammatory cells release reactive oxygen species (ROS) and reactive nitrogen species (RNS) which cause DNA damage. If not appropriately repaired, DNA damage leads to gene mutations and genomic instability.
Chen, Hongping, Choi, Eric T., Cueto, Ramon, Drosatos, Konstantinos, Fu, Hangfei, Nanayakkara, Gayani K, Park, Joon Y., Qin, Xuebin, Shao, Lijian, Shao, Ying, Sheng, Haitao, Sun, Jianxin, Sun, Yu, Wang, Hong, Wang, Luqiao, Wu, Na, Yang, Qian, Yang, William Y, Yang, Wuping, Yang, Xiaofeng, Zeng, Huihong, Zhu, Qingxian   +21 more
core   +2 more sources

Functional indicators of response mechanisms to nitrogen deposition, ozone, and their interaction in two Mediterranean tree species [PDF]

, 2017
The effects of nitrogen (N) deposition, tropospheric ozone (O3) and their interaction were investigated in two Mediterranean tree species, Fraxinus ornus L. (deciduous) and Quercus ilex L.
Basile, Adriana, Fusaro, Lina, Karam, Elham Asadi, Manes, Fausto, Maresca, Viviana, Palma, Adriano, Salvatori, Elisabetta   +6 more
core   +2 more sources

Evidence for detrimental cross interactions between reactive oxygen and nitrogen species in Leber's hereditary optic neuropathy cells [PDF]

, 2015
Here we have collected evidence suggesting that chronic changes in the NO homeostasis and the rise of reactive oxygen species bioavailability can contribute to cell dysfunction in Leber’s hereditary optic neuropathy (LHON) patients.We report that ...
Arese, Marzia, Buscarinu, Maria Chiara, Chessa, Luciana, Coarelli, Giulia, Falabella, Micol, Forte, Elena, Giuffre', Alessandro, Magnifico, MARIA CHIARA, Mechelli, Rosella, Radić, Kristina, Salvetti, Marco, Santini, Paolo, Sarti, Paolo   +12 more
core   +4 more sources

Reaction Cycles of Halogen Species in the Immune Defense: Implications for Human Health and Diseases and the Pathology and Treatment of COVID-19

Cells, 2020
There is no vaccine or specific antiviral treatment for COVID-19, which is causing a global pandemic. One current focus is drug repurposing research, but those drugs have limited therapeutic efficacies and known adverse effects. The pathology of COVID-19
Qing-Bin Lu
doaj   +1 more source

Decadal changes in summertime reactive oxidized nitrogen and surface ozone over the Southeast United States [PDF]

, 2018
Widespread efforts to abate ozone (O3) smog have significantly reduced emissions of nitrogen oxides (NOx) over the past 2 decades in the Southeast US, a place heavily influenced by both anthropogenic and biogenic emissions.
Cohen, Ronald C., Crounse, John D., Dibb, Jack E., Fiore, Arlene M., Fried, Alan, Hanisco, Thomas F., Horowitz, Larry W., Lee, Ben H., Li, Jingyi, Lopez-Hilfiker, Felipe D., Mao, Jingqiu, Neuman, J. Andrew, Nowak, John B., Paulot, Fabien, Peischl, Jeff, Pollack, Ilana B., Robert, James M., Ryerson, Thomas B., Singh, Hanwant B., Teng, Alex P., Thornton, Joel A., Veres, Patrick, Wennberg, Paul O., Wolfe, Glenn M.   +23 more
core   +4 more sources

Biologically Relevant Small Radicals

CHIMIA, 2008
Biologically relevant small radicals are at the focus of the working group 4 (WG4) of the COST Action CM0603 (Free Radicals in Chemical Biology, CHEMBIORADICAL). This article surveys the areas of research being undertaken by the partners in WG4.
Georg Bauer, Gabor Speier, Gabor Merenyi, Jozsef Kaizer, Sara Goldstein, Bernard T. Golding, Georg Gescheidt, Lidia Gebicka, Jerzy L. Gebicki, Chryssostomos Chatgilialoglu, Peter Wardman   +10 more
doaj   +1 more source

Juggling with reactive oxygen species and antioxidant defense system – A coping mechanism under salt stress

Plant Stress, 2022
Even under optimal conditions many metabolic processes produce ROS like superoxide anion (O2.-), hydrogen peroxide (H2O2) and hydroxyl radicals (OH⋅), particularly in chloroplast and mitochondria.
Divya Singh
doaj   +1 more source

Ozone and alkyl nitrate formation from the Deepwater Horizon oil spill atmospheric emissions [PDF]

, 2012
Ozone (O3), alkyl nitrates (RONO2), and other photochemical products were formed in the atmosphere downwind from the Deepwater Horizon (DWH) oil spill by photochemical reactions of evaporating hydrocarbons with NOx (=NO+NO2) emissions from spill response
Aikin, KC, Atlas, EL, Blake, DR, Holloway, JS, Meinardi, S, Neuman, JA, Nowak, JB, Parrish, DD, Peischl, J, Perring, AE, Pollack, IB, Roberts, JM, Ryerson, TB, Trainer, M   +13 more
core   +1 more source