Abstract
Biomarkers of exposure to harmful tobacco constituents are key tools for identifying individuals at risk and developing interventions and tobacco control measures. However, tobacco biomarker studies are scarce in many parts of the world with high prevalence of tobacco use. Our goal was to establish a robust method for simultaneous analysis of urinary total 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanol (NNAL), N′-nitrosonornicotine (NNN), and cotinine at the Advanced Centre for Treatment, Research and Education in Cancer (ACTREC) in Mumbai, India. These biomarkers are validated measures of exposure to the carcinogenic tobacco nitrosamines 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone (NNK) and NNN and the addictive alkaloid nicotine, respectively. The established method is characterized by excellent accuracy, linearity, and precision, and was successfully applied to the analysis of 15 smokeless tobacco (SLT) users and 15 non-users of tobacco recruited in Mumbai. This is the first report of establishment of such procedure in a laboratory in India, which offers the first in-country capacity for research on tobacco carcinogenesis in Indian SLT users.
Original language | English (US) |
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Article number | 20007 |
Journal | Scientific reports |
Volume | 11 |
Issue number | 1 |
DOIs | |
State | Published - Dec 2021 |
Bibliographical note
Funding Information:The work reported here was supported by funds from the University of Minnesota’s Center for Global Health and Social Responsibility (Khariwala), FIC/NIH Grant R01-TW010651 (Khariwala/Stepanov/Chaturvedi, MPIs), and in part by R01-CA180880 (Stepanov). LC-MS/MS analysis was supported in part by XII Plan project funding from the Department of Atomic Energy, Government of India. The content is solely the responsibility of the authors and does not represent the official views of the funding agencies.
Publisher Copyright:
© 2021, The Author(s).
PubMed: MeSH publication types
- Journal Article
- Research Support, N.I.H., Extramural
- Research Support, Non-U.S. Gov't