Evidence map›Paper›PMID 31882880›Full record

ArticleScientific reports2019

Specific strains of Streptococcus mutans, a pathogen of dental caries, in the tonsils, are associated with IgA nephropathy.

Seigo Ito, Taro Misaki, Shuhei Naka, Kaoruko Wato, Yasuyuki Nagasawa, Ryota Nomura, Masatoshi Otsugu, Michiyo Matsumoto-Nakano, Kazuhiko Nakano, Hiroo Kumagai and 1 more

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 40 papers.

0numbers the graph read from it
0cells of the map it votes in
40citing papers in PubMed
3.0field-weighted citation impact, top 8% 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

40 citing papers in PubMed, 50 citations in OpenAlex.

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  18. Review
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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

11 authors at 5 institutions in 1 country.

Seigo ItoDepartment of Nephrology and Endocrinology, National Defense Medical College, Tokorozawa, Saitama, Japan. sitoh@ndmc.ac.jp.
Taro MisakiDivision of Nephrology, Seirei Hamamatsu General Hospital, Hamamatsu, Shizuoka, Japan.
Shuhei NakaDepartment of Pediatric Dentistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Okayama, Japan.
Kaoruko WatoDepartment of Pediatric Dentistry, Division of Oral infection and Disease Control, Osaka University Graduate School of Dentistry, Suita, Osaka, Japan.
Yasuyuki NagasawaDivision of Kidney and Dialysis, Department of Internal Medicine, Hyogo College of Medicine, Nishinomiya, Hyogo, Japan.
Ryota NomuraDepartment of Pediatric Dentistry, Division of Oral infection and Disease Control, Osaka University Graduate School of Dentistry, Suita, Osaka, Japan.
Masatoshi OtsuguDepartment of Pediatric Dentistry, Division of Oral infection and Disease Control, Osaka University Graduate School of Dentistry, Suita, Osaka, Japan.
Michiyo Matsumoto-NakanoDepartment of Pediatric Dentistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Okayama, Japan.
Kazuhiko NakanoDepartment of Pediatric Dentistry, Division of Oral infection and Disease Control, Osaka University Graduate School of Dentistry, Suita, Osaka, Japan.ORCID http://orcid.org/0000-0002-2209-2685
Hiroo KumagaiDepartment of Nephrology and Endocrinology, National Defense Medical College, Tokorozawa, Saitama, Japan.
Naoki OshimaDepartment of Nephrology and Endocrinology, National Defense Medical College, Tokorozawa, Saitama, Japan.
The University of Osaka · JPNational Defense Medical College · JPOkayama University · JPHyogo Medical University · JPSeirei Christopher University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Streptococcus mutans is known to be a major causative agent of dental caries, and strains expressing the cell surface collagen-binding Cnm protein contribute to the development of several systemic diseases. A relationship between tonsillar immunity and glomerulonephritis has been recognized in IgA nephropathy (IgAN), and specific pathogens may have effects on tonsillar immunity (mucosal immunity). Here, we present findings showing a relationship between the presence of Cnm-positive S. mutans strains in the tonsils of IgAN patients and IgAN condition/pathogenesis. Analyses of tonsillar specimens obtained from patients with IgAN (n = 61) and chronic tonsillitis (controls; n = 40) showed that the Cnm protein-positive rate was significantly higher in IgAN patients. Among IgAN patients, the tonsillar Cnm-positive group (n = 15) had a significantly higher proportion of patients with high urinary protein (>1.5 g/gCr) and lower serum albumin level than the Cnm-negative group (n = 46). Additionally, Cnm protein and CD68, a common human macrophage marker, were shown to be merged in the tonsils of IgAN patients. These findings suggest that Cnm-positive S. mutans strains in the tonsils may be associated with severe IgAN.

Indexed as

Disease SusceptibilityAdultBiomarkersBiopsyFemaleGlomerulonephritis, IGAHumansMaleMiddle AgedPalatine TonsilStreptococcal InfectionsStreptococcus mutansTonsillitisBiomarkers

Identifiers

PMID31882880
PMCPMC6934739
OpenAlexW2997374729

What OpenQuestion holds

Textmetadata
LicenceCC BY
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Registered trials

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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.