PMID- 38104433 OWN - NLM STAT- MEDLINE DCOM- 20240110 LR - 20240116 IS - 1878-3252 (Electronic) IS - 0946-672X (Linking) VI - 82 DP - 2024 Mar TI - Heavy metal levels are positively associated with serum periostin and miRNA-125b levels, but inversely associated with miRNA-26a levels in pediatric asthma cases. A case-control study. PG - 127364 LID - S0946-672X(23)00240-7 [pii] LID - 10.1016/j.jtemb.2023.127364 [doi] AB - BACKGROUND: The study investigated heavy metals levels [urinary cadmium (U-Cd), erythrocytic cadmium (E-Cd), urinary arsenic (U-As), and whole blood lead (WB-Pb)] in children with bronchial asthma (BA) and tested their associations with serum periostin, miRNA-125b and miRNA-26a levels, and with asthma severity clinically and laboratory [blood eosinophils count (BEC) and serum total immunoglobin E (IgE)]. Also, we tested cut-off points, for the studied parameters, to distinguish BA cases from healthy children. METHODS: This case-control study included 158 children divided into control group; n = 72 and BA group; n = 86. Heavy metals were measured by an inductively coupled plasma-optical emission spectrophotometer. Serum periostin and IgE levels were measured by their corresponding ELISA kits. miRNAs relative expressions were estimated by RT-qPCR using the 2(-DeltaDeltaCT) method. RESULTS: Heavy metals, serum periostin, and miR-125b levels were significantly high in BA group (p < 0.001). Heavy metals levels correlated positively with serum periostin, miR-125b and IgE levels, BEC, and asthma severity. The reverse was observed regarding serum miR-26a levels. Receiver operating characteristics (ROC) curve analysis showed good to excellent abilities of U-Cd, E-Cd, U-As, WB-Pb, serum periostin, miRNA-125b, and miRNA - 26a, and total IgE levels to distinguish BA cases from healthy children. CONCLUSIONS: Heavy metal toxicity in children is associated with BA severity, increased serum periostin and miRNA-125b levels, and decreased miRNA-26a levels. Specific measures to reduce children's exposure to heavy metals should be taken. Future research should consider blocking miRNA-125b action or enhancing miRNA-26a action to manage BA cases. CI - Copyright (c) 2023 Elsevier GmbH. All rights reserved. FAU - Mohany, Khalid M AU - Mohany KM AD - Department of Medical Biochemistry and Molecular Biology, Faculty of Medicine, Assiut University, Assiut 71515, Egypt. Electronic address: khalidmohany@aun.edu.eg. FAU - Gamal, Yasser AU - Gamal Y AD - Department of Pediatrics, Faculty of Medicine, Assiut University, Assiut 71515, Egypt. FAU - Abdel Raheem, Yaser F AU - Abdel Raheem YF AD - Department of Pediatrics, Faculty of Medicine, Assiut University, Assiut 71515, Egypt. LA - eng PT - Journal Article DEP - 20231212 PL - Germany TA - J Trace Elem Med Biol JT - Journal of trace elements in medicine and biology : organ of the Society for Minerals and Trace Elements (GMS) JID - 9508274 RN - 0 (MicroRNAs) RN - 00BH33GNGH (Cadmium) RN - 0 (Periostin) RN - 2P299V784P (Lead) RN - 0 (Metals, Heavy) RN - 37341-29-0 (Immunoglobulin E) RN - 0 (Biomarkers) SB - IM MH - Child MH - Humans MH - *MicroRNAs MH - Cadmium MH - Periostin MH - Case-Control Studies MH - Lead MH - *Asthma MH - *Metals, Heavy MH - Immunoglobulin E MH - Biomarkers OTO - NOTNLM OT - Bronchial asthma OT - Heavy metals OT - MiRNA-125b OT - MiRNA-26a OT - Periostin 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- 2023/12/18 00:42 MHDA- 2024/01/10 06:42 CRDT- 2023/12/17 18:07 PHST- 2023/08/10 00:00 [received] PHST- 2023/12/06 00:00 [revised] PHST- 2023/12/11 00:00 [accepted] PHST- 2024/01/10 06:42 [medline] PHST- 2023/12/18 00:42 [pubmed] PHST- 2023/12/17 18:07 [entrez] AID - S0946-672X(23)00240-7 [pii] AID - 10.1016/j.jtemb.2023.127364 [doi] PST - ppublish SO - J Trace Elem Med Biol. 2024 Mar;82:127364. doi: 10.1016/j.jtemb.2023.127364. Epub 2023 Dec 12.