Genetic Susceptibility to Head and Neck Cancer: Interaction Between Nutrition and Mutagen Sensitivity

Laryngoscope - Tập 107 Số 6 - Trang 765-781 - 1997
Stimson P. Schantz1, Zuo‐Feng Zhang2, Margaret S. Spitz3, Ming Sun4, Tao Hsu5
1Stimson P. Schantz, MD, Memorial Sloan‐Kettering Cancer Center, 1275 York Avenue New York, NY 10021, U.S.A.
2Epidemiology and Biostatistics Service, Memorial Sloan‐Kettering Cancer Center, New York, New York
3Department of Epidemiology, M.D. Anderson Cancer Center, Houston, Texas.
4Head and Neck Surgery Service, Memorial Sloan-Kettering Cancer Center, New York, New York
5Department of Cell Biology, M.D. Anderson Cancer Center, Houston, Texas.

Tóm tắt

AbstractThe development of head and neck cancer may depend not only on exposure to environmental carcinogens but also on a genetically based susceptibility to carcinogen‐induced damage. This thesis presents a case‐control study that demonstrates the significance of mutagen sensitivity, a measure of an individual's intrinsic DNA repair capacity against free radical damage, as a risk factor for the disease. As part of the case‐control analysis, 167 previously untreated patients and 177 age‐ and sex‐matched healthy controls were assessed for various lifestyle factors including tobacco and alcohol habits, occupational exposures, and diet. Mutagen sensitivity expressed by each individual was determined by quantifying bleomycin‐induced chromosomal breaks within peripheral blood lymphocytes in vitro. Consistent with our initial observations and those of others, mutagen hypersensitivity was strongly associated with increased risk of head and neck cancer (odds ratio, 4.95; 95% confidence interval, 2.67 to 9.17) after adjusting for age, sex, and race. Low intake of vitamins C and E was also associated with an increased risk of disease and was interactive with mutagen sensitivity in risk estimates. Individuals with both a low intake of various antioxidants and increased chromosomal sensitivity to oxidant‐induced DNA damage were at greatest risk. This study supports the concept that the risk of head and neck cancer is determined by a balance of factors that either enhance or protect against free radical oxygen damage, including innate capacities for DNA repair.

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Laryngoscope

Tập 107 Số 6

765-781

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