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Medida de la exposición al humo ambiental del tabaco y nuevos biomarcadores de carcinógenos específicos del tabaco

Authors: Pérez Ortuño, Raúl;

Medida de la exposición al humo ambiental del tabaco y nuevos biomarcadores de carcinógenos específicos del tabaco

Abstract

El consumo de tabaco es la principal causa de mortalidad evitable por cáncer en el mundo y es origen de enfermedades cardiovasculares y respiratorias. Las nitrosaminas específicas del tabaco (TSNAs) están clasificadas como carcinógenos de tipo I en humanos. La exposición pasiva al humo ambiental del tabaco (HAT) incrementa el riesgo de cáncer de pulmón y de esófago, así como de infarto agudo de miocardio en no fumadores. Existe un creciente interés en monitorizar el consumo de tabaco, y especialmente la exposición al HAT en población no fumadora. En este contexto, el objetivo de esta tesis doctoral fue desarrollar procedimientos de alta sensibilidad y rendimiento para la determinación de biomarcadores de exposición al humo del tabaco, así como estudiar nuevos biomarcadores específicos de exposición a TSNAs. Se desarrollaron con éxito diferentes métodos de análisis de nicotina y cotinina en múltiples matrices biológicas, y de las principales TSNAs en cabello y saliva. Estudios de muestras representativas de la población adulta de Barcelona han mostrado que NNK es el mejor biomarcador de TSNAs en cabello, mientras que NNN es el más prevalente en saliva. Existen una clara evidencia que sugiere la necesidad de regular la producción de cigarrillos con un contenido controlado y menor de NNK y NNN.

Tobacco consumption is the leading cause of preventable cancer mortality worldwide and it is the origin of cardiovascular and respiratory diseases. Tobacco specific nitrosamines (TSNAs) are classified as type I carcinogens in humans. Passive exposure to second hand smoke (SHS) increases the risk of lung and esophageal cancer and acute myocardial infarction in non-smokers. There is an increasing interest in monitoring the use of tobacco products and especially the exposure to SHS in non-smoking population. In this context, the aim of this PhD thesis was to develop high-throughput and high sensitivity procedures for the determination of biomarkers of exposure to tobacco smoke, as well as studying new specific biomarkers of exposure to TSNAs. Several methods were successfully developed to analyze nicotine and cotinine in multiple biological matrices, and TSNAs in hair and oral fluid. Studies on representative samples of the adult population of Barcelona have shown that NNK is the best biomarker of TSNAs in hair, while NNN is the most prevalent in saliva. There is clear evidence suggesting the need to regulate the production of cigarettes with lower and controlled content of NNK and NNN.

Programa de doctorat en Biomedicina

Country
Spain
Keywords

LCMSMS, cabello, 616, Nitrosaminas específicas del tabaco, Biomarcadores del tabaco, Tobacco biomarkers, TSNAs, Saliva, Hair

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
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Cancer Research