PMID- 38134642 OWN - NLM STAT- MEDLINE DCOM- 20240123 LR - 20240202 IS - 1090-2414 (Electronic) IS - 0147-6513 (Linking) VI - 270 DP - 2024 Jan 15 TI - Serum albumin mediates the associations between heavy metals and two novel systemic inflammation indexes among U.S. adults. PG - 115863 LID - S0147-6513(23)01367-2 [pii] LID - 10.1016/j.ecoenv.2023.115863 [doi] AB - BACKGROUND: The effects of heavy metal exposure on immunological function have sparked widespread concern, but unequivocal evidence on the association between mixed metal exposure and novel systemic inflammatory indexes remains scarce. OBJECTIVES: This study aimed to analyze the associations of heavy metals with two novel systemic inflammation indexes and the mediated effects of serum albumin. METHODS: Nineteen metals were detected among 4082 U.S. adults based on the NHANES. A linear regression, restricted cubic splines (RCS) regression, weighted quantile sum (WQS), Quantile-based Gcomputation (qgcomp), and Bayesian kernel machine regression (BKMR) were conducted to evaluate the associations of single metal and mixed metals with systemic immune-inflammation index (SII) and systemic inflammation response index (SIRI) levels, respectively. A series of subgroup analyses were used to identify potentially vulnerable populations. Furthermore, we conducted mediation analyses to investigate the mediated effects of serum albumin on the associations of metals with SII and SIRI. RESULTS: In the single-exposure model, exposure to various metals such as urinary Co, As, and serum Zn, Cu was associated with SII and SIRI (P(FDR)<0.05). Simultaneously, the above metals were linear positively correlated with SII and SIRI. Mixed-exposure analyses consistently showed that overall mixed urinary metal levels were positively pertinent for SII and SIRI levels, and the metal Co played a significant role in the urinary metal mixtures. Subgroup analyses showed that exposure to urinary Cd in men and elderly people increased SII and SIRI levels. The results of mediation analyses suggested the association of urinary metal mixture with SII and SIRI was mediated by albumin, and the proportion of mediation was 14.45% and 9.49%, respectively. CONCLUSIONS: Our findings suggested that metal exposure is strongly associated with the levels of system inflammation indexes and that serum albumin is, in part, a mediator of this association. CI - Copyright (c) 2023 The Authors. Published by Elsevier Inc. All rights reserved. FAU - He, Yi-Sheng AU - He YS AD - Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, 81 Meishan Road, Hefei 230032, Anhui, China; Institute of Kidney Disease, Inflammation & Immunity Mediated Diseases, The Second Hospital, of Anhui Medical University, China; Anhui Provincial Institute of Translational Medicine, China. FAU - Cao, Fan AU - Cao F AD - Department of Ophthalmology, The Second Affiliated Hospital of Anhui Medical University, 678, Furong Road, Hefei, Anhui, China; Department of clinical medicine, The Second School of Clinical Medicine, Anhui Medical University, 81 Meishan Road, Hefei, Anhui, China; Beijing Institute of Ophthalmology, Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Ophthalmology & Visual Sciences Key Laboratory, Beijing, China. FAU - Musonye, Harry Asena AU - Musonye HA AD - Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, 81 Meishan Road, Hefei 230032, Anhui, China; Institute of Kidney Disease, Inflammation & Immunity Mediated Diseases, The Second Hospital, of Anhui Medical University, China; Anhui Provincial Institute of Translational Medicine, China. FAU - Xu, Yi-Qing AU - Xu YQ AD - Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, 81 Meishan Road, Hefei 230032, Anhui, China; Institute of Kidney Disease, Inflammation & Immunity Mediated Diseases, The Second Hospital, of Anhui Medical University, China; Anhui Provincial Institute of Translational Medicine, China. FAU - Gao, Zhao-Xing AU - Gao ZX AD - Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, 81 Meishan Road, Hefei 230032, Anhui, China; Institute of Kidney Disease, Inflammation & Immunity Mediated Diseases, The Second Hospital, of Anhui Medical University, China; Anhui Provincial Institute of Translational Medicine, China. FAU - Ge, Man AU - Ge M AD - Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, 81 Meishan Road, Hefei 230032, Anhui, China; Institute of Kidney Disease, Inflammation & Immunity Mediated Diseases, The Second Hospital, of Anhui Medical University, China; Anhui Provincial Institute of Translational Medicine, China. FAU - He, Tian AU - He T AD - Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, 81 Meishan Road, Hefei 230032, Anhui, China; Institute of Kidney Disease, Inflammation & Immunity Mediated Diseases, The Second Hospital, of Anhui Medical University, China; Anhui Provincial Institute of Translational Medicine, China. FAU - Zhang, Peng AU - Zhang P AD - Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, 81 Meishan Road, Hefei 230032, Anhui, China; Institute of Kidney Disease, Inflammation & Immunity Mediated Diseases, The Second Hospital, of Anhui Medical University, China; Anhui Provincial Institute of Translational Medicine, China. FAU - Zhao, Chan-Na AU - Zhao CN AD - Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, 81 Meishan Road, Hefei 230032, Anhui, China; Institute of Kidney Disease, Inflammation & Immunity Mediated Diseases, The Second Hospital, of Anhui Medical University, China; Anhui Provincial Institute of Translational Medicine, China. FAU - Wang, Peng AU - Wang P AD - Teaching Center for Preventive Medicine, School of Public Health, Anhui Medical University, 81 Meishan Road, Hefei 230016 Anhui, China. Electronic address: wangpeng19910318@sina.com. FAU - Pan, Hai-Feng AU - Pan HF AD - Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, 81 Meishan Road, Hefei 230032, Anhui, China; Institute of Kidney Disease, Inflammation & Immunity Mediated Diseases, The Second Hospital, of Anhui Medical University, China; Anhui Provincial Institute of Translational Medicine, China. Electronic address: panhaifeng1982@sina.com. LA - eng PT - Journal Article DEP - 20231221 PL - Netherlands TA - Ecotoxicol Environ Saf JT - Ecotoxicology and environmental safety JID - 7805381 RN - 0 (Serum Albumin) RN - 0 (Metals, Heavy) SB - IM MH - Adult MH - Aged MH - Male MH - Humans MH - *Serum Albumin MH - Bayes Theorem MH - Nutrition Surveys MH - *Metals, Heavy/toxicity MH - Inflammation/chemically induced OTO - NOTNLM OT - Combined effect OT - Mediation OT - Metals OT - System inflammation indexes COIS- Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. EDAT- 2023/12/22 19:43 MHDA- 2024/01/23 06:44 CRDT- 2023/12/22 18:15 PHST- 2023/10/21 00:00 [received] PHST- 2023/12/13 00:00 [revised] PHST- 2023/12/17 00:00 [accepted] PHST- 2024/01/23 06:44 [medline] PHST- 2023/12/22 19:43 [pubmed] PHST- 2023/12/22 18:15 [entrez] AID - S0147-6513(23)01367-2 [pii] AID - 10.1016/j.ecoenv.2023.115863 [doi] PST - ppublish SO - Ecotoxicol Environ Saf. 2024 Jan 15;270:115863. doi: 10.1016/j.ecoenv.2023.115863. Epub 2023 Dec 21.