PMID- 37304287 OWN - NLM STAT- MEDLINE DCOM- 20230622 LR - 20230622 IS - 1664-3224 (Electronic) IS - 1664-3224 (Linking) VI - 14 DP - 2023 TI - Bidirectional two-sample Mendelian randomization analysis reveals a causal effect of interleukin-18 levels on postherpetic neuralgia risk. PG - 1183378 LID - 10.3389/fimmu.2023.1183378 [doi] LID - 1183378 AB - BACKGROUND: Postherpetic neuralgia (PHN) is a debilitating complication of herpes zoster, characterized by persistent neuropathic pain that significantly impairs patients' quality of life. Identifying factors that determine PHN susceptibility is crucial for its management. Interleukin-18 (IL-18), a pro-inflammatory cytokine implicated in chronic pain, may play a critical role in PHN development. METHODS: In this study, we conducted bidirectional two-sample Mendelian randomization (MR) analyses to assess genetic relationships and potential causal associations between IL-18 protein levels increasing and PHN risk, utilizing genome-wide association study (GWAS) datasets on these traits. Two IL-18 datasets obtained from the EMBL's European Bioinformatics Institute database which contained 21,758 individuals with 13,102,515 SNPs and Complete GWAS summary data on IL-18 protein levels which contained 3,394 individuals with 5,270,646 SNPs. The PHN dataset obtained from FinnGen biobank had 195,191 individuals with 16,380,406 SNPs. RESULTS: Our findings from two different datasets of IL-18 protein levels suggest a correlation between genetically predicted elevations in IL-18 protein levels and an increased susceptibility to PHN.(IVW, OR and 95% CI: 2.26, 1.07 to 4.78; p = 0.03 and 2.15, 1.10 to 4.19; p =0.03, respectively), potentially indicating a causal effect of IL-18 protein levels increasing on PHN risk. However, we did not detect any causal effect of genetic liability to PHN risk on IL-18 protein levels. CONCLUSION: These findings suggest new insights into identifying IL-18 protein levels increasing at risk of developing PHN and may aid in the development of novel prevention and treatment approaches for PHN. CI - Copyright (c) 2023 Liang and Fan. FAU - Liang, Xiao AU - Liang X AD - Department of Anesthesiology, West China Hospital, Sichuan University, Chengdu, Sichuan, China. FAU - Fan, Yuchao AU - Fan Y AD - Department of Anesthesiology, Sichuan Clinical Research Center for Cancer, Sichuan Cancer Hospital & Institute, Sichuan Cancer Center, Affiliated Cancer Hospital of University of Electronic Science and Technology of China, Chengdu, China. LA - eng PT - Journal Article DEP - 20230525 PL - Switzerland TA - Front Immunol JT - Frontiers in immunology JID - 101560960 RN - 0 (Interleukin-18) RN - 0 (IL18 protein, human) SB - IM MH - Humans MH - Genome-Wide Association Study MH - Interleukin-18/genetics MH - Mendelian Randomization Analysis MH - *Neuralgia, Postherpetic/genetics MH - Quality of Life PMC - PMC10247971 OTO - NOTNLM OT - bidirectional Mendelian randomization OT - genome-wide association study OT - herpes zoster OT - interleukin-18 OT - postherpetic neuralgia COIS- The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. EDAT- 2023/06/12 06:42 MHDA- 2023/06/13 06:42 PMCR- 2023/01/01 CRDT- 2023/06/12 04:06 PHST- 2023/03/10 00:00 [received] PHST- 2023/05/15 00:00 [accepted] PHST- 2023/06/13 06:42 [medline] PHST- 2023/06/12 06:42 [pubmed] PHST- 2023/06/12 04:06 [entrez] PHST- 2023/01/01 00:00 [pmc-release] AID - 10.3389/fimmu.2023.1183378 [doi] PST - epublish SO - Front Immunol. 2023 May 25;14:1183378. doi: 10.3389/fimmu.2023.1183378. eCollection 2023.