Evidence map›Paper›PMID 31129882›Full record

ArticleObesity surgery2019

Bariatric/Metabolic Surgery Induces Noticeable Changes of Microbiota and Their Secreting Extracellular Vesicle Composition in the Gut.

Yeon-Ju Huh, Joo-Young Seo, Jieun Nam, Jinho Yang, Andrea McDowell, Yoon-Keun Kim, Joo-Ho Lee

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Article in Obesity surgery, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

14 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Host-Microbiota Interactions in Obesity: Immune Metabolic Dysregulation.Obesity reviews : an official journal of the International Association for the Study of Obesity · 2026
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors.

Yeon-Ju HuhLHK Bariatric and Metabolic Clinic, 218 Bongeunsa-ro, Seoul, Gangnam-gu, Republic of Korea.
Joo-Young SeoDepartment of Microbiology, Ewha Womans University College of Medicine, Seoul, Republic of Korea.
Jieun NamInstitute of MD Healthcare Inc., Seoul, Republic of Korea.
Jinho YangInstitute of MD Healthcare Inc., Seoul, Republic of Korea.
Andrea McDowellInstitute of MD Healthcare Inc., Seoul, Republic of Korea.
Yoon-Keun KimInstitute of MD Healthcare Inc., Seoul, Republic of Korea.
Joo-Ho LeeLHK Bariatric and Metabolic Clinic, 218 Bongeunsa-ro, Seoul, Gangnam-gu, Republic of Korea. gsljh7@gmail.com.ORCID 0000-0001-8499-664X

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionMicrobial ecology is reported to be an important regulator of energy homeostasis and glucose metabolism. Microbes secrete extracellular vesicles (EVs) during their proliferation and death to communicate with other cells. To investigate the roles of gut microbiota in glucose metabolism, we analyzed serial changes of gut microbe and microbial EV composition before and after bariatric/metabolic surgery (BMS).

methodsTwenty-eight Wistar rats were fed on high-fat diet (HFD) to induce obesity and diabetes. Five of them compared with 5 rats fed on regular chow diet (RCD). Among the remaining 23 rats, Roux-en-Y gastric bypass (RYGB) (n = 10), sleeve gastrectomy (SG) (n = 10), or sham operation (n = 3) was randomly performed. Gut microbiota and EVs from fecal samples were analyzed by 16S rDNA amplicon sequencing.

resultsThe present study showed that microbial diversity was decreased in HFD-fed rats versus RCD-fed rats. In addition, BMS reversed glucose intolerance and microbial richness which were induced by HFD. In terms of microbiota and microbial EV composition, both RYGB and SG enhance the composition of phyla Proteobacteria, Verrucomicrobia, and their secreting EVs, but decrease phylum Firmicutes and its EVs. We tried to demonstrate specific genera showed a significant compositional difference in obesity/diabetes-induced rats compared with normal rats and then restored similarly toward normal rats' level after BMS. At the genus level, Lactococcus, Ruminococcus, Dorea in Firmicutes(p), Psychrobacter in Proteobacteria(p), and Akkermansia in Verrucomicrobia(p) fit these conditions after BMS.

conclusionWe suggest that these genera are the candidates contributing to obesity and diabetes improvement mechanism after BMS.

Indexed as

Gastrointestinal MicrobiomeAnimalsBacteriaBacterial Typing TechniquesBariatric SurgeryDiabetes Mellitus, ExperimentalDiabetes Mellitus, Type 2Diet, High-FatExtracellular VesiclesFecesGastrectomyGastric BypassMaleMetagenomicsObesityPostoperative PeriodBariatric/metabolic surgeryDiabetesExtracellular vesicleGut microbiotaObesity

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.