The precancerous effect of emitted cooking oil fumes on precursor lesions of cervical cancer.
Although cooking emission from high-temperature frying has been deemed a Group 2A carcinogen by the International Agency for Research on Cancer, little is known about its impact on cervical tumorigenesis. To investigate the precancerous consequence of cooking oil fumes on cervical intraepithelial neoplasm (CIN), a community-based case-control study, which takes all known risk factors into consideration, was conducted in Taiwan. From 2003 to 2008, in a Pap smear screening and biopsy examination network, 206 pathology-verified women with inflammations/atypical squamous cells of undetermined significance or CIN grade-1 (CIN1) and 73 with CIN2-3 (defined as low-grade squamous intraepithelial lesions (LGSIL) and high-grade squamous intraepithelial lesions (HGSIL), respectively); and 1,200 area-and-age-matched controls with negative cytology were recruited. Multinomial logistic regression was applied in the multivariate analysis to determine the likelihood of contracting LGSIL or HGSIL. The risks of the two lesions increased with the increase of carcinogenic high-risk human papillomavirus DNA load, with a clear dose-response relationship. Chefs were observed to experience a 7.9-fold elevated HGSIL risk. Kitchens with poor fume ventilation during the main cooking life-stage correlated to a 3.7-fold risk of HGSIL, but not for LGSIL. More than 1 hr of daily cooking in kitchens with poor fume conditions appeared to confer an 8.4-fold HGSIL risk, with an 8.3-fold heterogeneously higher odds ratio than that (aOR = 1.0) for LGSIL. Similar risk pattern has been reproduced among never-smoking women. Our findings demonstrate the association between indoor exposure to cooking fumes from heated oil and the late development of cervical precancerous lesions. This final conclusion needs to be verified by future research.
Lee
Chien-Hung
CH
Department of Public Health, Kaohsiung Medical University, Kaohsiung, Taiwan.
Yang
Sheau-Fang
SF
Peng
Chiung-Yu
CY
Li
Ruei-Nian
RN
Chen
Yu-Chieh
YC
Chan
Te-Fu
TF
Tsai
Eing-Mei
EM
Kuo
Fu-Chen
FC
Huang
Joh-Jong
JJ
Tsai
Hsiu-Ting
HT
Hung
Yu-Hsiu
YH
Huang
Hsiao-Ling
HL
Tsai
Sharon
S
Wu
Ming-Tsang
MT
D000328:Adult; D000368:Aged; D016902:Air Pollution, Indoor / Q000009:adverse effects*; D002273:Carcinogens; D016022:Case-Control Studies; D003296:Cooking; D004279:DNA, Viral / Q000235:genetics; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D027383:Papillomaviridae / Q000235:genetics; D011084:Polycyclic Aromatic Hydrocarbons / Q000009:adverse effects*; D011230:Precancerous Conditions / Q000139:chemically induced* / Q000235:genetics / Q000473:pathology; D011379:Prognosis; D012307:Risk Factors; D002583:Uterine Cervical Neoplasms / Q000139:chemically induced / Q000453:epidemiology* / Q000473:pathology; D055815:Young Adult; D002578:Uterine Cervical Dysplasia / Q000139:chemically induced / Q000453:epidemiology* / Q000473:pathology
D002273:Carcinogens; D004279:DNA, Viral; D011084:Polycyclic Aromatic Hydrocarbons