Evidence map›Paper›PMID 36687672›Full record

ArticleFrontiers in nutrition2022

Effect of urolithin A on the improvement of vascular endothelial function depends on the gut microbiota.

Yuichiro Nishimoto, Kota Fujisawa, Yuichi Ukawa, Masatake Kudoh, Kazuki Funahashi, Yoshimi Kishimoto, Shinji Fukuda

Open access · goldAbstract read
In one paragraph

Article in Frontiers in nutrition, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
4.0field-weighted citation impact, top 6% 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

17 citing papers in PubMed, 25 citations in OpenAlex.

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  8. Food as Medicine for Hypertension: Microbiota as Mediators.Hypertension (Dallas, Tex. : 1979) · 2025
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  13. The gut microbiome as a modulator of arterial function and age-related arterial dysfunction.American journal of physiology. Heart and circulatory physiology · 2024
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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 at 4 institutions in 1 country.

Yuichiro NishimotoMetagen Inc., Tsuruoka, Japan.
Kota FujisawaMetagen Inc., Tsuruoka, Japan.
Yuichi UkawaHealthcare SBU, DAICEL Corporation, Tokyo, Japan.
Masatake KudohHealthcare SBU, DAICEL Corporation, Myoko, Japan.
Kazuki FunahashiMetagen Inc., Tsuruoka, Japan.
Yoshimi KishimotoDepartment of Food Science and Human Nutrition, Faculty of Agriculture, Setsunan University, Hirakata, Japan.
Shinji FukudaMetagen Inc., Tsuruoka, Japan.
Daicel (Japan) · JPKanagawa Institute of Technology · JPSetsunan University · JPTokyo Institute of Technology · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Background: Urolithin A (UA) is a metabolite produced by gut microbiota from ingested ellagic acid. Although the effect of ellagic acid intake on vascular endothelial function (VEF) improvement has been reported, the effect of UA intake on VEF improvement remains obscure. In addition, UA has been reported to improve the intestinal barrier function, and UA may have improved VEF by gut microbiome alteration. Objective: In this study, we conducted a clinical trial to explore and analyze the effects of UA intake on vascular endothelial function (VEF) and characteristics of the intestinal environment, such as gut microbiome profiling and organic acid composition. Methods: A placebo-controlled, randomized, double-blinded, parallel group trial was conducted on participants who could metabolize small amounts of UA from ellagic acid (non-UA producers) and had relatively poor VEF. VEF was assessed using the flow-mediated vasodilatation (FMD) score. Participants were administered placebo, UA 10 mg/day, or UA 50 mg/day for 12 weeks. FMD was measured and fecal samples were collected at 0, 4, 8, and 12 weeks of treatment. Gut microbiome analysis and organic acid level measurements were performed to evaluate the effects of UA intake on the intestinal environment. This clinical trial is publicly registered at the UMIN-CTR, trial number: UMIN000042014. Results: The gut microbiota of the UA 50 mg/day group showed a significant increase in alpha diversity (Faith's phylogenetic diversity). Four and nine microbial genera were significantly altered in the UA 10 mg/day and UA 50 mg/day groups, respectively ( Conclusion: Urolithin A intake alters the gut microbiota and improves their alpha diversity. In addition, the effect of UA on VEF correlated with the individual gut microbiota. Our results have practical implications for a new approach to providing healthcare that focuses on intestinal environment-based diet therapy.

Indexed as

flow-mediated vasodilatationgut microbiotaorganic acidsurolithin Avascular endothelial function

Identifiers

PMID36687672
PMCPMC9854132
OpenAlexW4313611764

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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.