PMID- 34027826 OWN - NLM STAT- MEDLINE DCOM- 20220304 LR - 20220304 IS - 2154-4700 (Electronic) IS - 1933-8244 (Linking) VI - 77 IP - 2 DP - 2022 TI - Effect of heavy metals on ventricular repolarization and depolarization in the Metropolitan Manila Development Authority (MMDA) traffic enforcers' health study. PG - 87-95 LID - 10.1080/19338244.2020.1853017 [doi] AB - We examined the relationships between blood heavy metals [cadmium (B-Cd), mercury (B-Hg), and lead (B-Pb)] and heart rate-corrected QT interval (QTc), JT interval (JTc), and QRS complex duration (QRSc), electrocardiogram markers of ventricular repolarization and depolarization among 60 traffic enforcers in the MMDA traffic enforcers' health study. We fitted regression models to estimate the mean change effect on QTc, JTc, and QRSc, of B-Cd, B-Hg, and B-Pb concentrations, adjusted for potential confounding factors. We looked at effect modification by sex and smoking status. An interquartile range increase in B-Cd (0.9 mug/L) was related to a 6.6% increase in mean QRSc [95% confidence interval (CI): 2.5, 10.8], and a 1.7% increase in mean QTc (95% CI: 0.2, 3.3). We also found that the associations between B-Cd and QRSc and QTc were higher among participants who were never smokers than ever smokers. Moreover, the association between B-Cd and QRSc was also higher among males than females. FAU - Regencia, Zypher Jude G AU - Regencia ZJG AD - Exposure Assessment, Epidemiology, and Risk Lab, Institute of Clinical Epidemiology, National Institutes of Health, University of the Philippines-Manila, City of Manila, Philippines. FAU - Dalmacion, Godofreda V AU - Dalmacion GV AD - Exposure Assessment, Epidemiology, and Risk Lab, Institute of Clinical Epidemiology, National Institutes of Health, University of the Philippines-Manila, City of Manila, Philippines. AD - Department of Clinical Epidemiology, College of Medicine, University of the Philippines-Manila, City of Manila, Philippines. AD - Department of Pharmacology and Toxicology, College of Medicine, University of the Philippines-Manila, City of Manila, Philippines. FAU - Baja, Emmanuel S AU - Baja ES AD - Exposure Assessment, Epidemiology, and Risk Lab, Institute of Clinical Epidemiology, National Institutes of Health, University of the Philippines-Manila, City of Manila, Philippines. AD - Department of Clinical Epidemiology, College of Medicine, University of the Philippines-Manila, City of Manila, Philippines. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20201202 PL - United States TA - Arch Environ Occup Health JT - Archives of environmental & occupational health JID - 101282564 RN - 0 (Metals, Heavy) RN - 00BH33GNGH (Cadmium) RN - 2P299V784P (Lead) RN - FXS1BY2PGL (Mercury) SB - IM MH - Adult MH - Cadmium/*blood MH - Electrocardiography MH - Female MH - *Heart Rate MH - Humans MH - Lead/*blood MH - Male MH - Mercury/*blood MH - Metals, Heavy/blood MH - Occupational Exposure/*adverse effects MH - Philippines/epidemiology MH - Traffic-Related Pollution/*adverse effects MH - *Ventricular Function OTO - NOTNLM OT - Blood cadmium OT - MMDA ' Health Study OT - blood lead OT - blood mercury OT - sex OT - smoking OT - traffic enforcers OT - ventricular depolarization and repolarizationtraffic enforcers EDAT- 2021/05/25 06:00 MHDA- 2022/03/05 06:00 CRDT- 2021/05/24 09:56 PHST- 2021/05/25 06:00 [pubmed] PHST- 2022/03/05 06:00 [medline] PHST- 2021/05/24 09:56 [entrez] AID - 10.1080/19338244.2020.1853017 [doi] PST - ppublish SO - Arch Environ Occup Health. 2022;77(2):87-95. doi: 10.1080/19338244.2020.1853017. Epub 2020 Dec 2.