Changes in Gut Microbiome after Bariatric Surgery Versus Medical Weight Loss in a Pilot Randomized Trial

Lee, Clare J.; Florea, Liliana; Sears, Cynthia L.; Maruthur, Nisa M.; Potter, James J.; Schweitzer, Michael; Magnuson, Thomas; Clark, Jeanne M.

doi:10.1007/s11695-019-03976-4

Cited by 51 publications

(85 citation statements)

References 37 publications

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“…Out of the 59 studies, 36 studies applied a pre-post design (baseline measurements provided) (Group 1: n = 23 [ 37 , 38 , 39 , 40 , 41 , 42 , 43 , 44 , 45 , 46 , 47 , 48 , 49 , 50 , 51 , 52 , 53 , 54 , 55 , 56 , 57 , 58 , 59 ]; Group 2: n = 10 [ 60 , 61 , 62 , 63 , 64 , 65 , 66 , 67 , 68 , 69 ]; Group 3: n = 4 [ 70 , 71 , 72 , 73 ]). Sixteen studies used a cross-sectional design (Group 1: n = 6 [ 74 , 75 , 76 , 77 , 78 , 79 ]; Group 2: n = 10 [ 80 , 81 , 82 , 83 , 84 , 85 , 86 ,…”

Section: Resultsmentioning

confidence: 99%

Gut Microbiota, Probiotics and Psychological States and Behaviors after Bariatric Surgery—A Systematic Review of Their Interrelation

et al. 2020

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The gastrointestinal (GI) microbiota plays an important role in health and disease, including brain function and behavior. Bariatric surgery (BS) has been reported to result in various changes in the GI microbiota, therefore demanding the investigation of the impact of GI microbiota on treatment success. The goal of this systematic review was to assess the effects of BS on the microbiota composition in humans and other vertebrates, whether probiotics influence postoperative health, and whether microbiota and psychological and behavioral factors interact. A search was conducted using PubMed and Web of Science to find relevant studies with respect to the GI microbiota and probiotics after BS, and later screened for psychological and behavioral parameters. Studies were classified into groups and subgroups to provide a clear overview of the outcomes. Microbiota changes were further assessed for whether they were specific to BS in humans through the comparison to sham operated controls in other vertebrate studies. Changes in alpha diversity appear not to be specific, whereas dissimilarity in overall microbial community structure, and increases in the abundance of the phylum Proteobacteria and Akkermansia spp. within the phylum Verrucomicrobia after surgery were observed in both human and other vertebrates studies and may be specific to BS in humans. Human probiotic studies differed regarding probiotic strains and dosages, however it appeared that probiotic interventions were not superior to a placebo for quality of life scores or weight loss after BS. The relationship between GI microbiota and psychological diseases in this context is unclear due to insufficient available data.

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Section: Resultsmentioning

confidence: 99%

Gut Microbiota, Probiotics and Psychological States and Behaviors after Bariatric Surgery—A Systematic Review of Their Interrelation

et al. 2020

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“…Moreover, feeling hungry is negatively correlated with Akkermansia [158,159]. An increase of Proteabacteria was directly associated with improvement of insulin sensitivity in a recent randomized controlled trial [160].…”

Section: Alterations In the Gut Microbiome After Bariatric Surgerymentioning

confidence: 94%

“…Changes in microbial diversity are less profound after gastric banding than after RYGB. This is possibly due to an increase in facultative anaerobic microbes that are acid-sensitive and bile-resistant [160].…”

Section: Alterations In the Gut Microbiome After Bariatric Surgerymentioning

confidence: 99%

Small intestinal physiology relevant to bariatric and metabolic endoscopic therapies: Incretins, bile acid signaling, and gut microbiome

Olst

Meiring

Brauw

et al. 2020

Techniques and Innovations in Gastrointestinal Endoscopy

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Incretins, bile acids and the gut microbiome are involved in the pathophysiology of obesity and type 2 diabetes. The incretins glucagon-like peptide-1 and glucose-dependent-insulinetrophic polypeptide, both influence beta-cell function, insulin and glucose sensitivity, and food intake. Studies have shown that concentrations of both incretins change after bariatric surgery and nowadays glucagon-like peptide-1 agonists are administered as glucose and body weight regulating agents. Bile acids also play an important role in glycemic and metabolic regulation via multiple signaling pathways. After bariatric surgical interventions increase in bile acid concentrations have been observed combined with improvement of metabolic health. It is not clear though, whether this is a direct effect of the altered concentration of bile acids or an epiphenomenon. In addition, alterations in the microbiome are seen in patients with type 2 diabetes and people with obesity. The gut microbiome, probably together with incretins and bile acids, is essential in digestion and nutrient metabolism. After bariatric procedures several alterations in bacterial abundance have been demonstrated with specific bacterial species having different effects on glycemic and metabolic conditions

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“…Escherichia_Shigella, Enterococcus and two decreased genera were Intestinibacter and Oscillospira. Bifidobacterium was found to be decreased in T2DM patients, but bariatric surgery resulted in an increased relative abundance of Bifidobacterium, Faecalibaculum and Enterococcus (Miyachi et al, 2016;Kim et al, 2017;Guo et al, 2018;Lee et al, 2019). Moreover, recent studies also found that T2DM patients undergoing metformin treatment showed an increased abundance of Escherichia_Shigella along with a reduced population of Intestinibacter (Bryrup et al, 2019) while a higher relative abundance of Oscillospira was positively associated with the pathogenesis of diabetes (Wu et al, 2019).…”

Section: Figure 4 | (A)mentioning

confidence: 98%

Single-Anastomosis Duodenal Jejunal Bypass Improve Glucose Metabolism by Regulating Gut Microbiota and Short-Chain Fatty Acids in Goto-Kakisaki Rats

Zhang

et al. 2020

Front. Microbiol.

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In recent years, bariatric surgery has emerged as a promising treatment for type 2 diabetes. Bariatric surgery is known to cause alterations in the relative abundance and composition of gut microbiota, which may lead to alterations in the levels of Short-Chain Fatty Acids (SCFAs) that are produced during fermentation by gut microbes. However, little is known about the mechanism of improved glucose metabolism mediated by gut microbiota following bariatric surgery. The aim of our study was to explore whether changes in gut microbiota and in fecal SCFA could be detected following singleanastomosis duodenal jejunal bypass (DJB-sa) surgery, a type of bariatric surgery, and whether these alterations might be related to the improvement of glucose metabolism. To this end, we performed DJB-sa or SHAM surgery on Goto-Kakisaki (GK) rats. We then compared the glucose metabolism as well as changes in gut microbiota and SCFAs levels between both groups. Our results showed that DJB-sa surgery was associated with a significant decrease in fasting blood glucose (FBG), intraperitoneal glucose tolerance test (IPGTT), and fasting serum insulin (FSI). And, DJB-sa led to a change in the composition of gut microbiota including an increase in the relative abundance of SCFA-producing bacteria (Bifidobacterium and Subdoligranulum). Moreover, the levels of six SCFAs in feces, as well as the intestinal expression of SCFA receptors including G-protein-coupled receptor 41 (GPR41), G-protein-coupled receptor 43 (GPR43), and G-protein-coupled receptor 109A (GPR109A), and the expression of Glucagon-like peptide-1 (GLP-1) displayed a significant increase following DJB-sa compared with the Sham group. Thus, the gut microbiota may contribute to the improvement of glucose metabolism in type 2 diabetes following DJB-sa. In conclusion, our study shows that DJB-sa improves glucose metabolism by modulating gut microbiota and by increasing short-chain fatty acid production.

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Changes in Gut Microbiome after Bariatric Surgery Versus Medical Weight Loss in a Pilot Randomized Trial

Cited by 51 publications

References 37 publications

Gut Microbiota, Probiotics and Psychological States and Behaviors after Bariatric Surgery—A Systematic Review of Their Interrelation

Gut Microbiota, Probiotics and Psychological States and Behaviors after Bariatric Surgery—A Systematic Review of Their Interrelation

Small intestinal physiology relevant to bariatric and metabolic endoscopic therapies: Incretins, bile acid signaling, and gut microbiome

Single-Anastomosis Duodenal Jejunal Bypass Improve Glucose Metabolism by Regulating Gut Microbiota and Short-Chain Fatty Acids in Goto-Kakisaki Rats

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