Genotoxicity evaluation of tobacco and nicotine delivery products: Part Two. In vitro micronucleus assay.
Food Chem Toxicol
; 132: 110546, 2019 Oct.
Article
en En
| MEDLINE
| ID: mdl-31163219
In this study, a variety of test matrices from tobacco and nicotine delivery products were assessed against a 3R4F Kentucky reference cigarette using the in vitro micronucleus assay. Testing was conducted using two Chinese hamster cell lines (CHO and V79), and a human lymphoblastoid cell line (TK6), in accordance with established guidelines. Total particulate matter (TPM) from a 3R4F Reference cigarette was compared to an electronic cigarette e-liquid, electronic cigarette TPM and TPM from a commercial tobacco heating product using a standard and an extended treatment condition with recovery period. Cells were assessed with 3R4F TPM prior to assessment of the other tobacco and nicotine product test matrices. These cell lines gave varied responses to 3R4F TPM with the most robust response using V79â¯cells. The use of an extended exposure/recovery period was seen to increase assay sensitivity for CHO and V79â¯cell lines but was less clear for TK6 cells. Negative responses were observed for all products except 3R4F across all treatment conditions in V79â¯cells. The most potent response to cigarette smoke was following extended treatment with recovery, suggesting this may be a more appropriate treatment for the future assessment of tobacco and nicotine product test matrices.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Contaminación por Humo de Tabaco
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Material Particulado
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Productos de Tabaco
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Sistemas Electrónicos de Liberación de Nicotina
Tipo de estudio:
Guideline
Límite:
Animals
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Humans
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Male
Idioma:
En
Revista:
Food Chem Toxicol
Año:
2019
Tipo del documento:
Article
Pais de publicación:
Reino Unido