title: The precancerous effect of emitted cooking oil fumes on precursor lesions of cervical cancer.
abstract: 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.
authors.affiliation: Department of Public Health, Kaohsiung Medical University, Kaohsiung, Taiwan.
authors.forename: Chien-Hung
authors.initials: CH
authors.lastname: Lee
authors.forename: Sheau-Fang
authors.initials: SF
authors.lastname: Yang
authors.forename: Chiung-Yu
authors.initials: CY
authors.lastname: Peng
authors.forename: Ruei-Nian
authors.initials: RN
authors.lastname: Li
authors.forename: Yu-Chieh
authors.initials: YC
authors.lastname: Chen
authors.forename: Te-Fu
authors.initials: TF
authors.lastname: Chan
authors.forename: Eing-Mei
authors.initials: EM
authors.lastname: Tsai
authors.forename: Fu-Chen
authors.initials: FC
authors.lastname: Kuo
authors.forename: Joh-Jong
authors.initials: JJ
authors.lastname: Huang
authors.forename: Hsiu-Ting
authors.initials: HT
authors.lastname: Tsai
authors.forename: Yu-Hsiu
authors.initials: YH
authors.lastname: Hung
authors.forename: Hsiao-Ling
authors.initials: HL
authors.lastname: Huang
authors.forename: Sharon
authors.initials: S
authors.lastname: Tsai
authors.forename: Ming-Tsang
authors.initials: MT
authors.lastname: Wu
mesh_terms: 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
chemical_list: D002273:Carcinogens; D004279:DNA, Viral; D011084:Polycyclic Aromatic Hydrocarbons