Acrylamide and Glycidamide Hemoglobin Adduct Levels and Breast Cancer Risk in Japanese Women: A Nested Case–Control Study in the JPHC

Author:

Narii Nobuhiro1ORCID,Kito Kumiko23ORCID,Sobue Tomotaka1ORCID,Zha Ling1ORCID,Kitamura Tetsuhisa1ORCID,Matsui Yasuto4ORCID,Matsuda Tomonari4ORCID,Kotemori Ayaka2ORCID,Nakadate Misako2ORCID,Iwasaki Motoki35ORCID,Inoue Manami36ORCID,Yamaji Taiki5ORCID,Tsugane Shoichiro37ORCID,Ishihara Junko2ORCID,Sawada Norie3ORCID

Affiliation:

1. 1Department of Social and Environmental Medicine, Graduate School of Medicine, Osaka University, Osaka, Japan.

2. 2School of Life and Environmental Science, Azabu University, Kanagawa, Japan.

3. 3Division of Cohort research, National Cancer Center Institute for Cancer Control, Tokyo, Japan.

4. 4Graduate School of Engineering, Kyoto University, Kyoto, Japan.

5. 5Division of Epidemiology, National Cancer Center Institute for Cancer Control, Tokyo, Japan.

6. 6Division of Prevention, National Cancer Center Institute for Cancer Control, Tokyo, Japan.

7. 7National Institute of Health and Nutrition, National Institutes of Biomedical Innovation, Health and Nutrition, Tokyo, Japan.

Abstract

AbstractBackground:Acrylamide (AA) is classified as “probably carcinogenic to humans (class 2A)” by the International Agency for Research on Cancer. AA causes cancer owing to its mutagenic and genotoxic metabolite, glycidamide (GA), and its effects on sex hormones. Both AA and GA can interact with hemoglobin to hemoglobin adducts (HbAA and HbGA, respectively), which are considered appropriate biomarkers of internal exposure of AA. However, few epidemiologic studies reported an association of HbAA and HbGA with breast cancer.Methods:We conducted a nested case–control study within the Japan Public Health Center–based Prospective Study cohort (125 cases and 250 controls). Cases and controls were categorized into tertiles (lowest, middle, and highest) using the distribution of HbAA or HbGA levels in the control group and estimated ORs and 95% confidence intervals (CI) using conditional logistic regression, adjusting for potential confounders.Results:No association was observed between HbAA (ORHighestvs.Lowest, 1.34; 95% CI, 0.69–2.59), HbGA (ORHighest vs. Lowest, 1.46; 95% CI, 0.79–2.69), their sum HbAA+HbGA (ORHighest vs. Lowest, 1.36; 95% CI, 0.72–2.58) and breast cancer; however, some evidence of positive association was observed between their ratio, HbGA/HbAA, and breast cancer (ORHighest vs. Lowest, 2.19; 95% CI, 1.11–4.31).Conclusions:There was no association between biomarkers of AA and breast cancer.Impact:It is unlikely that AA increases breast cancer risk; however, the association of AA with breast cancer may need to be evaluated, with a focus not only on the absolute amount of HbAA or HbGA but also on HbGA/HbAA and the activity of metabolic genes.

Funder

Cabinet Office, Government of Japan

Ministry of Health, Labour and Welfare

Publisher

American Association for Cancer Research (AACR)

Subject

Oncology,Epidemiology

Reference23 articles.

1. Scientific opinion on acrylamide in food;European Food Safety Authority;EFSA J,2015

2. The carcinogenicity of dietary acrylamide intake: a comparative discussion of epidemiological and experimental animal research;Hogervorst;Crit Rev Toxicol,2010

3. Associations between dietary acrylamide intake and plasma sex hormone levels;Hogervorst;Cancer Epidemiol Biomarkers Prev,2013

4. Associations of acrylamide intake with circulating levels of sex hormones and prolactin in premenopausal Japanese women;Nagata;Cancer Epidemiol Biomarkers Prev,2015

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