PMID- 38375474 OWN - NLM STAT- MEDLINE DCOM- 20240221 LR - 20240406 IS - 1664-3224 (Electronic) IS - 1664-3224 (Linking) VI - 15 DP - 2024 TI - Tea intake and lung diseases: a Mendelian randomization study. PG - 1328933 LID - 10.3389/fimmu.2024.1328933 [doi] LID - 1328933 AB - BACKGROUND: Existing studies on the relationship between tea intake and lung diseases have yielded inconsistent results, leading to an ongoing dispute on this issue. The impact of tea consumption on the respiratory system remained elucidating. MATERIALS AND METHODS: We conducted a two-sample Mendelian randomization (MR) study to evaluate the associations between five distinct tea intake phenotypes and 15 different respiratory outcomes using open Genome-wide association study (GWAS) data. The inverse variance weighted (IVW) was used for preliminary screening and a variety of complementary methods were used as sensitivity analysis to validate the robustness of MR estimates. Pathway enrichment analysis was used to explore possible mechanisms. RESULTS: IVW found evidence for a causal effect of standard tea intake on an increased risk of lung squamous cell cancer (LSCC) (OR = 1.004; 95% CI = 1.001-1.007; P = 0.00299). No heterogeneity or pleiotropy was detected. After adjustment for potential mediators, including smoking, educational attainment, and time spent watching television, the association was still robust in multivariable MR. KEGG and GO enrichment predicted proliferation and activation of B lymphocytes may play a role in this causal relation. No causalities were observed when evaluating the effect of other kinds of tea intake on various pulmonary diseases. CONCLUSION: Our MR estimates provide causal evidence of the independent effect of standard tea intake (black tea intake) on LSCC, which may be mediated by B lymphocytes. The results implied that the population preferring black tea intake should be wary of a higher risk of LSCC. CI - Copyright (c) 2024 Wu, Jiao, Shu, Li and Zhu. FAU - Wu, Zhengyan AU - Wu Z AD - Department of Health Management Center, The First Affiliated Hospital of Soochow University, Suzhou, China. FAU - Jiao, Min AU - Jiao M AD - Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Soochow University, Suzhou, China. FAU - Shu, Chenying AU - Shu C AD - College of Pharmaceutical Sciences, Soochow University, Suzhou, China. FAU - Li, Chang AU - Li C AD - Department of Pulmonary and Critical Care Medicine, Chongzhou People's Hospital, Chongzhou, China. FAU - Zhu, Yehan AU - Zhu Y AD - Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Soochow University, Suzhou, China. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20240205 PL - Switzerland TA - Front Immunol JT - Frontiers in immunology JID - 101560960 RN - 0 (Tea) SB - IM MH - Genome-Wide Association Study MH - Mendelian Randomization Analysis MH - *Carcinoma, Non-Small-Cell Lung MH - *Carcinoma, Squamous Cell MH - *Camellia sinensis MH - *Lung Neoplasms/genetics MH - Tea PMC - PMC10875148 OTO - NOTNLM OT - Mendelian randomization OT - black tea intake OT - causal relationship OT - green tea intake OT - lung diseases OT - squamous cell lung cancer OT - standard tea intake 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- 2024/02/20 11:50 MHDA- 2024/02/21 11:22 PMCR- 2024/01/01 CRDT- 2024/02/20 03:46 PHST- 2023/10/27 00:00 [received] PHST- 2024/01/19 00:00 [accepted] PHST- 2024/02/21 11:22 [medline] PHST- 2024/02/20 11:50 [pubmed] PHST- 2024/02/20 03:46 [entrez] PHST- 2024/01/01 00:00 [pmc-release] AID - 10.3389/fimmu.2024.1328933 [doi] PST - epublish SO - Front Immunol. 2024 Feb 5;15:1328933. doi: 10.3389/fimmu.2024.1328933. eCollection 2024.