PMID- 36855809 OWN - NLM STAT- MEDLINE DCOM- 20230510 LR - 20230510 IS - 1613-4133 (Electronic) IS - 1613-4125 (Linking) VI - 67 IP - 9 DP - 2023 May TI - The Effect of Inulin-Type Fructans on Plasma Trimethylamine N-Oxide Levels in Peritoneal Dialysis Patients: A Randomized Crossover Trial. PG - e2200531 LID - 10.1002/mnfr.202200531 [doi] AB - SCOPE: Trimethylamine N-oxide (TMAO), an important proatherogenic uremic toxin, is oxidized by hepatic-flavin monooxygenases from gut microbiome-generated trimethylamine (TMA). The present study aims to explore whether manipulating the gut microbiota by inulin-type fructans (ITFs) can reduce circulating TMAO levels in peritoneal dialysis patients. METHODS AND RESULTS: This is a randomized, double-blind, placebo-controlled, crossover trial with 10 g day(-1) ITFs intervention for 3 months in continuous ambulatory peritoneal dialysis patients. The gut microbiome is measured, and TMA-producing gene clusters are annotated using shotgun metagenomic sequencing. Fecal and plasma TMA, plasma TMAO, and daily urine excretion and dialysis removal of TMAO are measured. Finally, 22 participants complete the trial. The daily intake of macronutrients and TMAO precursors is comparable during the prebiotics, washout, and placebo interventions. The ITFs intervention increases the Firmicutes/Bacteroidetes (F/B) ratio (p = 0.049) of gut microbiome. However, no significant influences are observed on fecal TMA content, circulating TMAO levels, or TMA-producing gene clusters, including choline TMA-lyase (CutC/D), carnitine monooxygenase (CntA/B), and betaine reductase (GrdH). CONCLUSIONS: Intervention with 10 g day(-1) of ITFs for 3 months is not sufficient to reduce plasma TMAO levels in peritoneal dialysis patients, but it improves the gut microbiome composition. CI - (c) 2023 Wiley-VCH GmbH. FAU - Xiong, Qianqian AU - Xiong Q AD - Department of Nutrition and Food Hygiene, Hubei Key Laboratory of Food Nutrition and Safety, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, China. FAU - Li, Li AU - Li L AD - Department of Nutrition and Food Hygiene, Hubei Key Laboratory of Food Nutrition and Safety, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, China. FAU - Xiao, Yonghua AU - Xiao Y AD - Institute of Food and Environmental Health, Wuhan Centers for Disease Control and Prevention, Wuhan, Hubei, 430024, China. FAU - He, Shuiqing AU - He S AD - Hunan Institute for Tuberculosis Control, Hunan Chest Hospital, Department of Nutrition, Changsha, Hunan, 410000, China. FAU - Zhao, Jing AU - Zhao J AD - Department of Nutrition and Food Hygiene, Hubei Key Laboratory of Food Nutrition and Safety, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, China. FAU - Lin, Xuechun AU - Lin X AD - Department of Nutrition and Food Hygiene, Hubei Key Laboratory of Food Nutrition and Safety, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, China. FAU - He, Yuqin AU - He Y AD - Department of Nutrition and Food Hygiene, Hubei Key Laboratory of Food Nutrition and Safety, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, China. FAU - Wang, Jinxue AU - Wang J AD - Department of Nutrition and Food Hygiene, Hubei Key Laboratory of Food Nutrition and Safety, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, China. FAU - Guo, Xiaolei AU - Guo X AD - Department of Nutrition and Food Hygiene, Hubei Key Laboratory of Food Nutrition and Safety, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, China. FAU - Liang, Wangqun AU - Liang W AD - Division of Nephrology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, China. FAU - Zuo, Xuezhi AU - Zuo X AD - Department of Clinical Nutrition, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, China. FAU - Ying, Chenjiang AU - Ying C AUID- ORCID: 0000-0003-4813-5951 AD - Department of Nutrition and Food Hygiene, Hubei Key Laboratory of Food Nutrition and Safety, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, China. LA - eng PT - Journal Article PT - Randomized Controlled Trial DEP - 20230317 PL - Germany TA - Mol Nutr Food Res JT - Molecular nutrition & food research JID - 101231818 RN - FLD0K1SJ1A (trimethyloxamine) RN - 9005-80-5 (Inulin) RN - 0 (Fructans) RN - 0 (Methylamines) RN - N91BDP6H0X (Choline) RN - LHH7G8O305 (trimethylamine) SB - IM MH - Humans MH - *Inulin/pharmacology MH - Fructans MH - Cross-Over Studies MH - Methylamines MH - Choline MH - *Peritoneal Dialysis OTO - NOTNLM OT - gut microbiome OT - inulin-type fructans OT - peritoneal dialysis OT - prebiotics OT - trimethylamine N-oxide EDAT- 2023/03/02 06:00 MHDA- 2023/05/10 06:42 CRDT- 2023/03/01 02:30 PHST- 2023/02/12 00:00 [revised] PHST- 2022/08/10 00:00 [received] PHST- 2023/05/10 06:42 [medline] PHST- 2023/03/02 06:00 [pubmed] PHST- 2023/03/01 02:30 [entrez] AID - 10.1002/mnfr.202200531 [doi] PST - ppublish SO - Mol Nutr Food Res. 2023 May;67(9):e2200531. doi: 10.1002/mnfr.202200531. Epub 2023 Mar 17.