Metabolic Activation and DNA Interactions of Carcinogenic N-Nitrosamines to Which Humans Are Commonly Exposed

Y Li, SS Hecht - International journal of molecular sciences, 2022 - mdpi.com
Carcinogenic N-nitrosamine contamination in certain drugs has recently caused great
concern and the attention of regulatory agencies. These carcinogens—widely detectable in …

Identification of DNA adducts of acetaldehyde

M Wang, EJ McIntee, G Cheng, Y Shi… - Chemical research in …, 2000 - ACS Publications
Acetaldehyde is a mutagen and carcinogen which occurs widely in the human environment,
sometimes in considerable amounts, but little is known about its reactions with DNA. In this …

Identification of adducts formed by pyridyloxobutylation of deoxyguanosine and DNA by 4-(acetoxymethylnitrosamino)-1-(3-pyridyl)-1-butanone, a chemically activated …

M Wang, G Cheng, SJ Sturla, Y Shi… - Chemical research in …, 2003 - ACS Publications
The tobacco specific carcinogens 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone (NNK)
and N '-nitrosonornicotine (NNN) are metabolically activated to 4-oxo-4-(3-pyridyl)-1 …

Modifications of nucleosides by endogenous mutagens–DNA adducts arising from cellular processes

D Pluskota-Karwatka - Bioorganic chemistry, 2008 - Elsevier
DNA damage plays a significant role in mutagenesis, carcinogenesis and ageing. Chemical
transformations leading to DNA damage include reactions of the base units with agents of …

[13C2]- Acetaldehyde Promotes Unequivocal Formation of 1,N2-Propano-2′-deoxyguanosine in Human Cells

CCM Garcia, JPF Angeli, FP Freitas… - Journal of the …, 2011 - ACS Publications
Acetaldehyde is an environmentally widespread genotoxic aldehyde present in tobacco
smoke, vehicle exhaust and several food products. Endogenously, acetaldehyde is …

New DNA adducts of crotonaldehyde and acetaldehyde

SS Hecht, EJ McIntee, M Wang - Toxicology, 2001 - Elsevier
This paper summarizes our recent studies on adducts produced in the reactions of the
carcinogens crotonaldehyde (2-butenal) and acetaldehyde with deoxyguanosine (dG) and …

Comparative metabolism of N- nitrosopiperidine and N- nitrosopyrrolidine by rat liver and esophageal microsomes and cytochrome P450 …

HL Wong, SE Murphy, M Wang, SS Hecht - Carcinogenesis, 2003 - academic.oup.com
N-nitrosopiperidine (NPIP) is a potent esophageal carcinogen in rats whereas structurally
similar N-nitrosopyrrolidine (NPYR) induces liver, but not esophageal tumors. NPIP is a …

A Schiff base is a major DNA adduct of crotonaldehyde

M Wang, EJ McIntee, G Cheng, Y Shi… - Chemical research in …, 2001 - ACS Publications
Previous studies have demonstrated that the reaction of crotonaldehyde with DNA produces
Michael addition products, and these have been detected in human tissues as well as …

Metabolism of N'-Nitrosonornicotine Enantiomers by Cultured Rat Esophagus and in Vivo in Rats

EJ McIntee, SS Hecht - Chemical research in toxicology, 2000 - ACS Publications
People who use tobacco products are exposed to considerable amounts of N '-
nitrosonornicotine (NNN), a well-established esophageal carcinogen in rats. NNN is …

Quantitative Measurement of DNA Adducts Using Neutral Hydrolysis and LC− MS. Validation of Genotoxicity Sensors

M Tarun, JF Rusling - Analytical chemistry, 2005 - ACS Publications
Neutral hydrolysis and LC− MS/MS analysis of 6-nm-thick DNA− polyion films used in
voltammetric genotoxicity screening sensors showed that concentrations of N7− guanine …