Nitrative DNA damage in inflammation and its possible role in carcinogenesis

T Sawa, H Ohshima - Nitric oxide, 2006 - Elsevier
Chronic inflammation has long been recognized as a risk factor for human cancer at various
sites. Examples include Helicobacter pylori-induced gastritis for gastric cancer, inflammatory …

8-nitroguanine, a product of nitrative DNA damage caused by reactive nitrogen species: formation, occurrence, and implications in inflammation and carcinogenesis

H Ohshima, T Sawa, T Akaike - Antioxidants & redox signaling, 2006 - liebertpub.com
The authors review studies on 8-nitroguanine (8-NO2-G) formed by reactions of guanine,
guanosine, and 2́-deoxyguanosine, either free or in DNA or RNAwith reactive nitrogen …

Oxidative DNA damage associated with combination of guanine and superoxide radicals and repair mechanisms via radical trapping

R Misiaszek, C Crean, A Joffe, NE Geacintov… - Journal of Biological …, 2004 - ASBMB
In living tissues under inflammatory conditions, superoxide radicals (O 2−⋅) are generated
and are known to cause oxidative DNA damage. However, the mechanisms of action are …

[图书][B] Nitroazoles: synthesis, structure and applications

L Larina, V Lopyrev - 2009 - books.google.com
Page 1 Page 2 Topics in Applied Chemistry For other titles published in this series, go to
www.springer.com/series/6610 Page 3 Lyudmila Larina • Valentin Lopyrev Nitroazoles …

Lifetimes and reaction pathways of guanine radical cations and neutral guanine radicals in an oligonucleotide in aqueous solutions

Y Rokhlenko, NE Geacintov… - Journal of the American …, 2012 - ACS Publications
The exposure of guanine in the oligonucleotide 5′-d (TCGCT) to one-electron oxidants
leads initially to the formation of the guanine radical cation G•+, its deptotonation product G …

Removal of oxidatively generated DNA damage by overlapping repair pathways

V Shafirovich, NE Geacintov - Free Radical Biology and Medicine, 2017 - Elsevier
It is generally believed that the mammalian nucleotide excision repair pathway removes
DNA helix-distorting bulky DNA lesions, while small non-bulky lesions are repaired by base …

Base and nucleotide excision repair of oxidatively generated guanine lesions in DNA

V Shafirovich, K Kropachev, T Anderson, Z Liu… - Journal of Biological …, 2016 - ASBMB
The well known biomarker of oxidative stress, 8-oxo-7, 8-dihydroguanine, is more
susceptible to further oxidation than the parent guanine base and can be oxidatively …

Formation of ring-opened and rearranged products of guanine: mechanisms and biological significance

NR Jena, PC Mishra - Free Radical Biology and Medicine, 2012 - Elsevier
DNA damage by endogenous and exogenous agents is a serious concern, as the damaged
products can affect genome integrity severely. Damage to DNA may arise from various …

Redox control of GTPases: from molecular mechanisms to functional significance in health and disease

J Heo - Antioxidants & redox signaling, 2011 - liebertpub.com
Small GTPases, including the proto-oncoprotein Ras and Rho GTPases, are involved in
various cellular signaling events. Some of these small GTPases are redox sensitive …

Miscoding events during DNA synthesis past the nitration-damaged base 8-nitroguanine

N Suzuki, M Yasui, NE Geacintov, V Shafirovich… - Biochemistry, 2005 - ACS Publications
8-Nitro-2 '-deoxyguanosine (8-NO2-dG) DNA adducts are induced by the reactive nitrogen
species and may be associated with the development of cancer in inflammatory tissues. To …