Results 61 to 70 of about 5,566,634 (283)

Periodontal disease etiology and role of oxidative stress

Magazin 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

Interaction of bilirubin and biliverdin with reactive nitrogen species [PDF]

FEBS Letters, 2003
Bilirubin (BR) and biliverdin (BV), two metabolites produced during haem degradation by haem oxygenase, possess strong antioxidant activities toward peroxyl radical, hydroxyl radical and hydrogen peroxide. Considering the importance attributed to nitric oxide (NO) and its congeners in the control of physiological and pathophysiological processes, we ...
Kaur, Harparkash, Hughes, Martin N., Green, Colin J., Naughton, Patrick, Foresti, Roberta, Motterlini, Roberto   +5 more
openaire   +2 more sources

Membrane composition and thermodynamic identity as boundaries of life for synthetic cell research

FEBS Letters, EarlyView.
What makes a cell a cell? The boundary of a living cell is not just a wall. Read as a Markov blanket, the membrane separates internal from external states, generating identity and non‐equilibrium order. Can this identity be rebuilt from scratch in a synthetic cell?
Caterina Presutti, Bert Poolman
wiley   +1 more source

Reactive nitrogen in the Spanish agri-food sector: environmental impact on atmosphere, soils, water and resources. [PDF]

, 2009
The presence of reactive species of nitrogen (N) in the biosphere might cause environmental impacts at local, regional and global scales. Nowadays the N flows generated by human activities greatly exceed natural processes, thus a necessity exists of ...
Arroyo Sanz, Juan Manuel, Soler Rovira, José, Soler Rovira, Pedro   +2 more
core  

An improved retrieval of tropospheric nitrogen dioxide from GOME [PDF]

, 2002
We present a retrieval of tropospheric nitrogen dioxide (NO2) columns from the Global Ozone Monitoring Experiment (GOME) satellite instrument that improves in several ways over previous retrievals, especially in the accounting of Rayleigh and cloud ...
Chance, Kelly, Li, Q., Kurosu, T.P., Robert M. Yantosca, Spurr, R.J.D., Gleason, J.F., Daniel J. Jacob, Martin, R.V., Fiore, Arlene M., Bey, I., Thomas P. Kurosu, Jacob, D.J., Koelemeijer, R. B. A., Bucsela, E., Jacob, Daniel J., Qinbin Li, Kurosu, T. P., Robert J. D. Spurr, Fiore, AM, Li, QB, Li, Qinbin, James F. Gleason, Yantosca, R. M., Palmer, P.I., Gleason, J. F., Randall V. Martin, Yantosca, RM, Eric Bucsela, Martin, RV, Jacob, DJ, Yantosca, Robert M., Gleason, James F., Palmer, P. I., Fiore, A.M., Kelly Chance, Jacob, D. J., Spurr, Robert J. D., Chance, K., Bey, Isabelle, Yantosca, R.M., Robert B. A. Koelemeijer, Martin, Randall V., Arlene M. Fiore, Martin, R. V., Palmer, Paul I., Spurr, R. J. D., Fiore, A. M., Paul I. Palmer, Koelemeijer, RBA, Bucsela, Eric, Isabelle Bey, Palmer, PI, Spurr, RJD, Koelemeijer, R.B.A., Gleason, JF, Kurosu, Thomas P., Koelemeijer, Robert B. A., Kurosu, TP   +57 more
core   +1 more source

Hijacking emergency granulopoiesis: Neutrophil ontogeny and reprogramming in cancer

Molecular Oncology, EarlyView.
Neutrophils are highly plastic innate immune cells; their functions in cancer extend beyond the tumour microenvironment. This Review summarises current understanding of neutrophil maturation and heterogeneity and highlights tumour‐induced granulopoiesis as a systemic programme that expands immature, immunosuppressive neutrophils via tumour‐derived ...
Gabriela Marinescu, Yi Feng
wiley   +1 more source

Signalling pathways involved in TNFα-induced cytoprotection : role of reactive oxygen species [PDF]

, 2005
Includes bibliographical references (leaves 73-89).Tumour necrosis factor alpha (TNFa) is a pleiotropic cytokine which has both beneficial and deleterious effects.
Lacerda, Lydia
core   +1 more source

Reactive Oxygen Species (ROS) and Reactive Nitrogen Species (RNS) in plants– maintenance of structural individuality and functional blend

Advances in Redox Research, 2022
The free radicals along with several reactive oxygen species (ROS) and reactive nitrogen species (RNS) are known to play a dual role in the biological living system which carries a substantial importance in terms of signal networking in plants.
Mamun Mandal, Manisha Sarkar, Azmi Khan, Moumita Biswas, Antonio Masi, Randeep Rakwal, Ganesh Kumar Agrawal, Amrita Srivastava, Abhijit Sarkar   +8 more
doaj   +1 more source

Sudden anaerobization in Amphibacillus xylanus increases intracellular labile ferrous iron and inhibits cell growth

FEBS Open Bio, EarlyView.
Abruptly changing from aerobic to anaerobic conditions (sudden anaerobization) induced growth inhibition and a significant increase in intracellular labile ferrous iron in the aerotolerant anaerobe Amphibacillus xylanus. We found that free flavins mediate efficient electron transfer from NADH to ferric iron under anaerobic conditions, suggesting that ...
Shinya Kimata, Yoichi Sakai, Keisuke Tanaka, Etsuro Yoshimura, Ken Kitano, Morio Ishikawa, Tadahiro Nakamoto, Tsutomu Takayama, Hirofumi Inoue, Kaho Nomura, Tomonori Suzuki, Masataka Uchino, Akira Abe, Youichi Niimura   +13 more
wiley   +1 more source

Silver nanoparticles can attenuate nitrative stress

Redox Biology, 2017
We have reported previously that glucose availability can modify toxicity of silver nanoparticles (AgNPs) via elevation of antioxidant defence triggered by increased mitochondrial generation of reactive oxygen species.
Mariusz Zuberek, Patrycja Paciorek, Grzegorz Bartosz, Agnieszka Grzelak   +3 more
doaj   +1 more source