Si Chen1,2, Ping-Ping Jiang1,2, Danxia Yu3, Gong-Cheng Liao1,2, Shang-Ling Wu1,2, Ai-Ping Fang1,2, Pei-Yan Chen1,2, Xiao-Yan Wang1,2, Yun Luo1,2, Jing-An Long1,2, Rong-Huan Zhong1,2, Zhao-Yan Liu1,2, Chun-Lei Li1,2, Dao-Ming Zhang1,2, Hui-Lian Zhu4,5. 1. Department of Nutrition, School of Public Health, Sun Yat-sen University, 74 Zhongshan II Road, Guangzhou, 510080, People's Republic of China. 2. Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Guangzhou, 510080, China. 3. Division of Epidemiology, Vanderbilt Epidemiology Center, Vanderbilt University Medical Center, Nashville, TN, 37203, USA. 4. Department of Nutrition, School of Public Health, Sun Yat-sen University, 74 Zhongshan II Road, Guangzhou, 510080, People's Republic of China. zhuhl@mail.sysu.edu.cn. 5. Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Guangzhou, 510080, China. zhuhl@mail.sysu.edu.cn.
Abstract
PURPOSE: To explore whether probiotic supplementation could attenuate serum trimethylamine-N-oxide (TMAO) level and impact the intestinal microbiome composition. DESIGN:Forty healthy males (20-25 years old) were randomized into the probiotic group (1.32 × 1011 CFU live bacteria including strains of Lactobacillus acidophilus, Lactobacillus rhamnosus GG, Bifidobacterium animalis, and Bifidobacterium longum daily) or the control group for 4 weeks. All participants underwent a phosphatidylcholine challenge test (PCCT) before and after the intervention. Serum TMAO and its precursors (TMA, choline and betaine) were measured by UPLC-MS/MS. The faecal microbiome was analyzed by 16S rRNA sequencing. RESULTS:Serum TMAO and its precursors were markedly increased after the PCCT. No statistical differences were observed in the probiotic and the control group in area under the curve (AUC) (14.79 ± 0.97 μmol/L 8 h vs. 19.17 ± 2.55 μmol/L 8 h, P = 0.106) and the pre- to post-intervention AUC alterations (∆AUC) (- 6.33 ± 2.00 μmol/L 8 h vs. - 0.73 ± 3.04 μmol/L 8 h, P = 0.131) of TMAO; however, higher proportion of participants in probiotic group showed their TMAO decrease after the intervention (78.9% vs. 45.0%, P = 0.029). The abundance of Faecalibacterium prausnitzii (P = 0.043) and Prevotella (P = 0.001) in the probiotic group was significantly increased after the intervention but without obvious differences in α- and β-diversity. CONCLUSIONS: The current probiotic supplementation resulted in detectable change of intestinal microbiome composition but failed to attenuate the serum TMAO elevation after PCCT. CLINICALTRIALS. GOV IDENTIFIER: NCT03292978. CLINICALTRIALS.GOV WEBSITE: https://clinicaltrials.gov/ct2/show/NCT03292978 .
RCT Entities:
PURPOSE: To explore whether probiotic supplementation could attenuate serum trimethylamine-N-oxide (TMAO) level and impact the intestinal microbiome composition. DESIGN: Forty healthy males (20-25 years old) were randomized into the probiotic group (1.32 × 1011 CFU live bacteria including strains of Lactobacillus acidophilus, Lactobacillus rhamnosus GG, Bifidobacterium animalis, and Bifidobacterium longum daily) or the control group for 4 weeks. All participants underwent a phosphatidylcholine challenge test (PCCT) before and after the intervention. Serum TMAO and its precursors (TMA, choline and betaine) were measured by UPLC-MS/MS. The faecal microbiome was analyzed by 16S rRNA sequencing. RESULTS: Serum TMAO and its precursors were markedly increased after the PCCT. No statistical differences were observed in the probiotic and the control group in area under the curve (AUC) (14.79 ± 0.97 μmol/L 8 h vs. 19.17 ± 2.55 μmol/L 8 h, P = 0.106) and the pre- to post-intervention AUC alterations (∆AUC) (- 6.33 ± 2.00 μmol/L 8 h vs. - 0.73 ± 3.04 μmol/L 8 h, P = 0.131) of TMAO; however, higher proportion of participants in probiotic group showed their TMAO decrease after the intervention (78.9% vs. 45.0%, P = 0.029). The abundance of Faecalibacterium prausnitzii (P = 0.043) and Prevotella (P = 0.001) in the probiotic group was significantly increased after the intervention but without obvious differences in α- and β-diversity. CONCLUSIONS: The current probiotic supplementation resulted in detectable change of intestinal microbiome composition but failed to attenuate the serum TMAO elevation after PCCT. CLINICALTRIALS. GOV IDENTIFIER: NCT03292978. CLINICALTRIALS.GOV WEBSITE: https://clinicaltrials.gov/ct2/show/NCT03292978 .
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