title: The structural and functional effects of fine particulate matter from cooking oil fumes on rat umbilical cord blood vessels.
abstract: A growing body of epidemiological evidence has supported the association between maternal exposure to airborne fine particulate matter (PM2.5) during pregnancy and adverse pregnancy outcomes. However, the specific biological mechanisms implicated in the causes of adverse pregnancy outcomes are not well defined. In this study, a pregnant rat model of exposure to different doses of cooking oil fumes (COFs)-derived PM2.5 by tail intravenous injection in different pregnant stages was established. The results indicated that exposure to COFs-derived PM2.5 was associated with adverse pregnancy outcomes, changed the structure of umbilical cord blood vessels, decreased the diameter and lumen area, and increased wall thickness. What's more, a significant increase of maximum contraction tension was observed in the early pregnancy high-dose exposure group and pregnant low-dose exposure group compared to the control group. Based on the maximum contraction tension, acetylcholine (ACh) did not induce vasodilation but caused a dose-dependent constriction, and there were significant differences in the two groups compared to the control group. Exposure to COFs-derived PM2.5 impaired the vasomotor function of umbilical veins by affecting the expression of NO and ET-1. This is the first study that evaluated the association of risk of adverse pregnancy outcomes and pregnant rats exposed to COFs-derived PM2.5 and primarily explored the potential mechanisms of umbilical cord blood vessels injury on a rat model. More detailed vitro and vivo studies are needed to further explore the mechanism in the future.
authors.affiliation: Department of Occupational and Environmental, School of Public Health, Anhui Medical University, Meishan Road, Hefei, Anhui, China.
authors.forename: Xiaoxia
authors.initials: X
authors.lastname: Zhu
authors.affiliation: Department of Occupational and Environmental, School of Public Health, Anhui Medical University, Meishan Road, Hefei, Anhui, China.
authors.forename: Lijuan
authors.initials: L
authors.lastname: Hou
authors.affiliation: Department of Occupational and Environmental, School of Public Health, Anhui Medical University, Meishan Road, Hefei, Anhui, China.
authors.forename: Jian
authors.initials: J
authors.lastname: Zhang
authors.affiliation: Department of Occupational and Environmental, School of Public Health, Anhui Medical University, Meishan Road, Hefei, Anhui, China.
authors.forename: Cijiang
authors.initials: C
authors.lastname: Yao
authors.affiliation: Department of Occupational and Environmental, School of Public Health, Anhui Medical University, Meishan Road, Hefei, Anhui, China.
authors.forename: Ying
authors.initials: Y
authors.lastname: Liu
authors.affiliation: Department of Occupational and Environmental, School of Public Health, Anhui Medical University, Meishan Road, Hefei, Anhui, China.
authors.forename: Chao
authors.initials: C
authors.lastname: Zhang
authors.affiliation: Department of Occupational and Environmental, School of Public Health, Anhui Medical University, Meishan Road, Hefei, Anhui, China.
authors.forename: Yachun
authors.initials: Y
authors.lastname: Xu
authors.affiliation: The Teaching Center for Preventive Medicine, School of Public Health, Anhui Medical University, Meishan Road 81, Hefei, 230032, Anhui, China. qshq@163.com.
authors.forename: Jiyu
authors.initials: J
authors.lastname: Cao
mesh_terms: D000393:Air Pollutants / Q000633:toxicity*; D000818:Animals; D003296:Cooking; D005260:Female; D005312:Fetal Blood / Q000502:physiology*; D005740:Gases; D006801:Humans; D008297:Male; D018811:Maternal Exposure / Q000009:adverse effects; D009821:Oils; D052638:Particulate Matter / Q000009:adverse effects / Q000032:analysis / Q000633:toxicity*; D011247:Pregnancy; D011256:Pregnancy Outcome; D051381:Rats; D012306:Risk; D018675:Toxicity Tests; D014471:Umbilical Veins / Q000187:drug effects* / Q000502:physiology* / Q000648:ultrastructure
chemical_list: D000393:Air Pollutants; D005740:Gases; D009821:Oils; D052638:Particulate Matter
keywords: Adverse pregnancy outcomes; Cooking oil fumes; PM2.5; Umbilical cord blood vessels