title: Maternal-Fetal Cancer Risk Assessment of Ochratoxin A during Pregnancy.
abstract: Increasing evidence has demonstrated that in utero exposure to environmental chemicals may interfere with fetal development and increase the risk of disease and cancer development later in life. Ochratoxin A (OTA) has been proven to induce diverse toxic effects including teratogenicity, carcinogenicity, immunotoxicity and potential endocrine disruption. Due to the continuous and widespread occurrence of OTA as a potential contaminant of staple foods, there is increasing concern of in utero exposure of fetus to this mycotoxin. In this study, maternal-fetal risk assessment of OTA during pregnancy was conducted using the benchmark dose approach for genotoxic carcinogens. The daily intake of OTA for Egyptian pregnant women was estimated based on their serum OTA level using the refined Klaassen equation for pregnancy. Fetal exposure level was also estimated based on the maternal data. Comparison between the estimated daily exposure and the negligible cancer risk intake (NCRI), and the calculation of margin of exposure (MOE) implicated that OTA exposure from dietary intake would be of low health concern for this general subpopulation of Egyptian women. This subpopulation of pregnant women was generally estimated not to be in high-risk for toxicity induced by OTA.
authors.affiliation: School of Biological Sciences, Faculty of Science, Kadoorie Biological Sciences Building, The University of Hong Kong, Pokfulam, Hong Kong, China. jw86@connect.hku.hk.
authors.forename: Chit Shing Jackson
authors.initials: CS
authors.lastname: Woo
authors.affiliation: School of Biological Sciences, Faculty of Science, Kadoorie Biological Sciences Building, The University of Hong Kong, Pokfulam, Hong Kong, China. elnezami@hku.hk.
authors.forename: Hani
authors.initials: H
authors.lastname: El-Nezami
mesh_terms: D000818:Animals; D002273:Carcinogens / Q000633:toxicity*; D004534:Egypt; D004781:Environmental Exposure / Q000032:analysis; D005260:Female; D005506:Food Contamination; D006801:Humans; D007680:Kidney Neoplasms / Q000139:chemically induced*; D018811:Maternal Exposure; D008431:Maternal-Fetal Exchange; D009793:Ochratoxins / Q000097:blood / Q000633:toxicity*; D011247:Pregnancy; D011297:Prenatal Exposure Delayed Effects; D018570:Risk Assessment
chemical_list: D002273:Carcinogens; D009793:Ochratoxins; C025589:ochratoxin A
keywords: Ochratoxin A; fetal; mycotoxin; pregnancy; risk assessment