Evidence map›Paper›PMID 36852538›Full record

ArticleJournal of diabetes investigation2023

Association between equol producers and type 2 diabetes mellitus among Japanese older adults.

Kiho Hamaura, Hiroshi Murakami, Ayumi Tamura, Kota Matsuki, Eri Sato, Jutaro Tanabe, Miyuki Yanagimachi, Maika Oishi, Kaori Iino, Shinya Okuyama and 5 more

Open access · goldAbstract read
In one paragraph

Article in Journal of diabetes investigation, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed
1.3field-weighted citation impact, top 21% 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

4 citing papers in PubMed, 5 citations in OpenAlex.

  1. 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

15 authors at 2 institutions in 1 country.

Kiho HamauraDepartment of Endocrinology and Metabolism, Hirosaki University Graduate School of Medicine, Hirosaki, Aomori, Japan.ORCID https://orcid.org/0000-0003-4151-0739
Hiroshi MurakamiDepartment of Endocrinology and Metabolism, Hirosaki University Graduate School of Medicine, Hirosaki, Aomori, Japan.ORCID https://orcid.org/0000-0002-5482-8095
Ayumi TamuraDepartment of Endocrinology and Metabolism, Hirosaki University Graduate School of Medicine, Hirosaki, Aomori, Japan.
Kota MatsukiDepartment of Endocrinology and Metabolism, Hirosaki University Graduate School of Medicine, Hirosaki, Aomori, Japan.
Eri SatoDepartment of Endocrinology and Metabolism, Hirosaki University Graduate School of Medicine, Hirosaki, Aomori, Japan.
Jutaro TanabeDepartment of Endocrinology and Metabolism, Hirosaki University Graduate School of Medicine, Hirosaki, Aomori, Japan.
Miyuki YanagimachiDepartment of Endocrinology and Metabolism, Hirosaki University Graduate School of Medicine, Hirosaki, Aomori, Japan.
Maika OishiDepartment of Obstetrics and Gynecology, Hirosaki University Graduate School of Medicine, Hirosaki, Aomori, Japan.
Kaori IinoDepartment of Obstetrics and Gynecology, Hirosaki University Graduate School of Medicine, Hirosaki, Aomori, Japan.
Shinya OkuyamaDepartment of Social Medicine, Hirosaki University Graduate School of Medicine, Hirosaki, Aomori, Japan.
Tatsuya MikamiInnovation Center for Health Promotion, Hirosaki University Graduate School of Medicine, Hirosaki, Aomori, Japan.
Tomomi UenoSaga Nutraceuticals Research Institute, Otsuka Pharmaceutical Co., Ltd., Saga, Japan.
Shigeto UchiyamaSaga Nutraceuticals Research Institute, Otsuka Pharmaceutical Co., Ltd., Saga, Japan.
Yoshihito YokoyamaDepartment of Obstetrics and Gynecology, Hirosaki University Graduate School of Medicine, Hirosaki, Aomori, Japan.
Makoto DaimonDepartment of Endocrinology and Metabolism, Hirosaki University Graduate School of Medicine, Hirosaki, Aomori, Japan.ORCID https://orcid.org/0000-0002-3775-1719
Hirosaki University · JPOtsuka (Japan) · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

AIMS/

introductionEquol, which is produced by enteric bacteria from soybean isoflavones, has a chemical structure similar to estrogen. Both in vivo and in vitro studies have shown the beneficial metabolic effects of equol. However, its effects on type 2 diabetes remain unclear. We investigated the association between the equol producers/non-producers and type 2 diabetes. MATERIALS AND

methodsThe participants included 147 patients with type diabetes mellitus aged 70-89 years, and 147 age- and sex-matched controls. To ascertain the equol producers or non-producers, we used the comparative logarithm between the urinary equol and daidzein concentrations (cut-off value -1.75).

resultsThe urinary equol concentration was significantly lower in the diabetes group compared with the non-diabetes group (P = 0.01). A significant difference in the proportion of equol producers was observed among all participants (38.8% in the diabetes group and 53.1% in the non-diabetes group; P = 0.01). The proportion of equol producers among women was significantly lower in the diabetes group (31.4%) than in the non-diabetes group (52.8%; P < 0.01). Additionally, the frequency of dyslipidemia in female equol producers was significantly lower than that in female non-equol producers (P < 0.01). Among men, no such differences were observed. We found a significant positive correlation between the urinary equol and daidzein concentrations among equol producers (r = 0.55, P < 0.01).

conclusionsOur study findings showed that postmenopausal women had a low proportion of equol producers with diabetes and dyslipidemia.

Indexed as

Diabetes Mellitus, Type 2EquolGastrointestinal MicrobiomeGlycine maxIsoflavonesAgedAged, 80 and overDyslipidemiasEast Asian PeopleFemaleHumansMalePhytoestrogensPostmenopauseSex FactorsdaidzeinEquolIsoflavonesPhytoestrogensDaidzeinDiabetes mellitusEquol

Identifiers

PMID36852538
PMCPMC10119921
OpenAlexW4322618005

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.