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Toxicology and Industrial Health
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Evaluation of genotoxicity of pan masala employing chromosomal aberration and micronucleus assay in bone marrow cells of the mice

BN Mojidra

Division of Reproductive and Cytotoxicology, National Institute of Occupational Health, Ahmedabad, India

K. Archana

Division of Reproductive and Cytotoxicology, National Institute of Occupational Health, Ahmedabad, India

AK Gautam

Division of Reproductive and Cytotoxicology, National Institute of Occupational Health, Ahmedabad, India

Y. Verma

Division of Reproductive and Cytotoxicology, National Institute of Occupational Health, Ahmedabad, India

BC Lakkad

Division of Reproductive and Cytotoxicology, National Institute of Occupational Health, Ahmedabad, India

Sunil Kumar

Division of Reproductive and Cytotoxicology, National Institute of Occupational Health, Ahmedabad, India, sunilnioh{at}yahoo.com

Pan masala is commonly consumed in south-east Asian and other oriental countries as an alternate of tobacco chewing and smoking. Genotoxic potential of pan masala (pan masala plain and pan masala with tobacco known as gutkha) was evaluated employing chromosome aberration (CA) and micronucleus (MN) assay in vivo. Animals were exposed to three different doses (0.5%, 1.5% and 3%) of pan masala plain (PMP) and gutkha (PMT) through feed for a period of 6 months and micronucleus and chromosomal aberrations were studied in the bone marrow cells. Induction of mean micronuclei in polychromatic erythrocytes (MNPCE) and normochromatic erythrocyte (MNNCE) was higher in both types of pan masala treated groups with respect to control group. Both pan masala plain and gutkha treatment significantly induced the frequency of MNPCE and MNNCE in the bone marrow cells, indicating the genotoxic potential. Furthermore, slight decline in the ratio of polychromatic erythrocytes to normochromatic erythrocytes was also noticed, suggesting the cytotoxic potential even though the ratio was statistically non significant. A dose-dependent, significant increase in chromosome aberration was observed in both types of pan masala treated mice with respect to control. However, no significant difference in micronucleus and chromosomal aberration induction was noticed between two types of pan masala exposed (PMP and PMT) groups. Results suggest that both types of pan masala, i.e. plain and gutkha, have genotoxic potential.

Key Words: chromosome aberration • genotoxicity • gutkha • micronucleus • pan masala

Toxicology and Industrial Health, Vol. 25, No. 7, 467-471 (2009)
DOI: 10.1177/0748233709345939
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