Impact of omega-3 fatty acids on hypertriglyceridemia, lipidomics, and gut microbiome in patients with type 2 diabetes

作者：Jieli Lu, Ruixin Liu, Huahui Ren, Shuangyuan Wang, Chunyan Hu, Zhun Shi, Mian Li, Wei Liu, Qin Wan, Qing Su, Qifu Li, Hongting Zheng, Shen Qu, Fangming Yang, Hongyi Ji, Hong Lin, Hongyan Qi, Xueyan Wu, Kui Wu, Yuhong Chen, Yu Xu, Min Xu, Tiange Wang, Jie Zheng, Guang Ning, Ruizhi Zheng, Yufang Bi, Huanzi Zhong, Weiqing Wang · 发表于：Med · 年份：2024 · DOI：10.1016/j.medj.2024.07.024 · 被引用次数：27 · 研究领域：Gut microbiota and health、Fatty Acid Research and Health、Oral microbiology and periodontitis research

Background Fish oil (FO), a mixture of omega-3 fatty acids mainly comprising docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA), has been recommended for patients with type 2 diabetes (T2D) and hypertriglyceridemia. However, its effects on lipidomic profiles and gut microbiota and the factors influencing triglyceride (TG) reduction remain unclear. Methods We conducted a 12-week, randomized, double-blind, placebo-controlled trial in 309 Chinese patients with T2D with hypertriglyceridemia (ClinicalTrials.gov: NCT03120299 ). Participants were randomly assigned (1:1) to receive either 4 g FO or corn oil for 12 weeks. The primary outcome was changes in serum TGs and the lipidomic profile, and the secondary outcome included changes in the gut microbiome and other metabolic variables. Findings The FO group had significantly better TG reduction (mean [95% confidence interval (CI)]: −1.51 [−2.01, −1.01] mmol/L) compared to the corn oil group (−0.66 [−1.15, −0.16] mmol/L, p = 0.02). FO significantly altered the serum lipid profile by reducing low-unsaturated TG species and increasing those containing DHA or EPA. FO had minor effects on gut microbiota, while baseline microbial features predicted the TG response to FO better than phenotypic or lipidomic features, potentially mediated by specific lipid metabolites. A total of 9 lipid metabolites significantly mediated the link between 4 baseline microbial variables and the TG response to FO supplementation. Conclusions Our finding...