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Journal of Environmental Pathology, Toxicology and Oncology

Impact factor: 0.877

ISSN Print: 0731-8898
ISSN Online: 2162-6537

Journal of Environmental Pathology, Toxicology and Oncology

DOI: 10.1615/JEnvPathToxOncol.v24.i2.70
pages 141-144

Black Tea (Camellia sinensis) as a Chemopreventive Agent in Oral Precancerous Lesions

Ajanta Halder
Department of Genetics, Vivekananda Institute of Medical Sciences, Ramakrishna Mission Seva Pratisthan, Kolkata, India
Ranjan Raychowdhury
Department of ENT Surgery, Vivekananda Institute of Medical Sciences, Ramakrishna Mission Seva Pratisthan, Kolkata, India
Asish Ghosh
Department of Facial and Maxillary Surgery, Vivekananda Institute of Medical Sciences, Ramakrishna Mission Seva Pratisthan, Kolkata, India
Madhusnata De
Department of Genetics, Vivekananda Institute of Medical Sciences, Ramakrishna Mission Seva Pratisthan, Kolkata, India

ABSTRACT

Oral carcinoma is the most common malignancy found in adult Indian men and the third most common in adult Indian women. About half of all cases are found to be associated with precancerous lesions, chiefly leukoplakia. We wanted to explore the possible benefits of black tea (Camellia sinensis) administered to patients with oral leukoplakia. Eighty-two subjects with oral leukoplakia underwent micronuclei and chromosomal assays on exfoliated oral mucosal epithelium, after which they received black tea in a fixed regimen. The micronuclei assay was repeated at 6 months, and the chromosomal study at 1 year. After the first year, the first 15 patients entered onto this study showed a significant decrease in the micronuclei frequency and chromosomal aberrations, which correlated with the clinical improvement. Several in vitro and animal studies have suggested the efficacy of tea in the chemoprevention of cancer. To the best of our knowledge, this is the first report on the effect of black tea in oral leukoplakia.