Evidence map›Paper›PMID 32839304›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2020

Alterations of the gut ecological and functional microenvironment in different stages of multiple sclerosis.

Daiki Takewaki, Wataru Suda, Wakiro Sato, Lena Takayasu, Naveen Kumar, Kimitoshi Kimura, Naoko Kaga, Toshiki Mizuno, Sachiko Miyake, Masahira Hattori and 1 more

Open access · greenAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 105 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
105citing papers in PubMed, 1 pooled it
9.5field-weighted citation impact, top 1% of its field
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

105 citing papers in PubMed, 1 synthesis or guideline pooled it, 180 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Article
  4. Observational
  5. Review
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Review
  12. Review
  13. Article
  14. Review
  15. Review
  16. Article
  17. Article
  18. Article
  19. Article
  20. Review

45 more citing papers are in PubMed but not listed here.

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

11 authors at 5 institutions in 1 country.

Daiki TakewakiDepartment of Immunology, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Kodaira, 187-8502 Tokyo, Japan.ORCID 0000-0002-9232-4031
Wataru SudaLaboratory for Microbiome Sciences, RIKEN Center for Integrative Medical Sciences, Tsurumi-ku, Yokohama, 230-0045 Kanagawa, Japan; wataru.suda@riken.jp yamamura@ncnp.go.jp.ORCID 0000-0002-2861-9724
Wakiro SatoDepartment of Immunology, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Kodaira, 187-8502 Tokyo, Japan.
Lena TakayasuLaboratory for Microbiome Sciences, RIKEN Center for Integrative Medical Sciences, Tsurumi-ku, Yokohama, 230-0045 Kanagawa, Japan.ORCID 0000-0003-0899-3492
Naveen KumarLaboratory for Microbiome Sciences, RIKEN Center for Integrative Medical Sciences, Tsurumi-ku, Yokohama, 230-0045 Kanagawa, Japan.ORCID 0000-0001-7364-6601
Kimitoshi KimuraDepartment of Immunology, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Kodaira, 187-8502 Tokyo, Japan.ORCID 0000-0002-8359-2886
Naoko KagaLaboratory of Proteomics and Biomolecular Science, Research Support Center, Juntendo University Graduate School of Medicine, Bunkyo-ku, 113-8421 Tokyo, Japan.ORCID 0000-0002-5165-7518
Toshiki MizunoDepartment of Neurology, Kyoto Prefectural University of Medicine, Kamigyo-ku, 602-8566 Kyoto, Japan.ORCID 0000-0002-7907-8243
Sachiko MiyakeDepartment of Immunology, Juntendo University School of Medicine, Bunkyo-ku, 113-8421 Tokyo, Japan.
Masahira HattoriLaboratory for Microbiome Sciences, RIKEN Center for Integrative Medical Sciences, Tsurumi-ku, Yokohama, 230-0045 Kanagawa, Japan.
Takashi YamamuraDepartment of Immunology, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Kodaira, 187-8502 Tokyo, Japan; wataru.suda@riken.jp yamamura@ncnp.go.jp.ORCID 0000-0001-9048-0375
National Center of Neurology and Psychiatry · JPRIKEN Center for Integrative Medical Sciences · JPJuntendo University · JPKyoto Prefectural University of Medicine · JPWaseda University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Multiple sclerosis (MS), an autoimmune disease of the central nervous system, generally starts as the relapsing remitting form (RRMS), but often shifts into secondary progressive MS (SPMS). SPMS represents a more advanced stage of MS, characterized by accumulating disabilities and refractoriness to medications. The aim of this study was to clarify the microbial and functional differences in gut microbiomes of the different stages of MS. Here, we compared gut microbiomes of patients with RRMS, SPMS, and two closely related disorders with healthy controls (HCs) by 16S rRNA gene and whole metagenomic sequencing data from fecal samples and by fecal metabolites. Each patient group had a number of species having significant changes in abundance in comparison with HCs, including short-chain fatty acid (SCFA)-producing bacteria reduced in MS. Changes in some species had close association with clinical severity of the patients. A marked reduction in butyrate and propionate biosynthesis and corresponding metabolic changes were confirmed in RRMS compared with HCs. Although bacterial composition analysis showed limited differences between the patient groups, metagenomic functional data disclosed an increase in microbial genes involved in DNA mismatch repair in SPMS as compared to RRMS. Together with an increased ratio of cysteine persulfide to cysteine in SPMS revealed by sulfur metabolomics, we postulate that excessive DNA oxidation could take place in the gut of SPMS. Thus, gut ecological and functional microenvironments were significantly altered in the different stages of MS. In particular, reduced SCFA biosynthesis in RRMS and elevated oxidative level in SPMS were characteristic.

Indexed as

Gastrointestinal MicrobiomeAdultCase-Control StudiesCysteineFatty Acids, VolatileFecesFemaleHumansMaleMetagenomeMultiple Sclerosis, Chronic ProgressiveMultiple Sclerosis, Relapsing-RemittingOxidative StressSulfurCysteineFatty Acids, VolatileSulfuroxidative stressrelapsing remitting multiple sclerosissecondary progressive multiple sclerosissulfur metabolomicswhole metagenomic sequencing

Identifiers

PMID32839304
PMCPMC7486801
OpenAlexW3080801640

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
Read underepoch 390

Registered trials

None linked

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.