Evidence map›Paper›PMID 27664183›Full record

ArticlePhysiological genomics2016

Microbial short chain fatty acid metabolites lower blood pressure via endothelial G protein-coupled receptor 41.

Niranjana Natarajan, Daijiro Hori, Sheila Flavahan, Jochen Steppan, Nicholas A Flavahan, Dan E Berkowitz, Jennifer L Pluznick

Registry-linked trialOpen access · greenAbstract read
In one paragraph

Article in Physiological genomics, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT05296395 (Impact of Lp299v on Vascular Aging in Healthy Adults), which is not on this map. Cited by 267 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
267citing papers in PubMed, 2 pooled it
18.4field-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.

NCT05296395 naactive not recruitingnot on this mapstarted 2023, after this paper: background citation

Impact of Lp299v on Vascular Aging in Healthy Adults

TypeinterventionalSponsorMedical College of WisconsinRan2023 to 2027Enrolled20ConditionsVascular AgingArmsLactobacillus Plantarum 299v in fermented oat drink, Heat-Killed Placebo control fermented drink
3 · Its place in the literature

Who cites it

267 citing papers in PubMed, 2 syntheses or guidelines pooled it, 431 citations in OpenAlex.

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  13. The gut-heart axis in cardio-oncology.Cardiovascular research · 2026
    Review
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  20. Gut Microbiota as a Mediator of Dietary Salt Effects on Blood Pressure.International journal of molecular sciences · 2026
    Review

207 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

7 authors at 2 institutions in 1 country.

Niranjana NatarajanDepartment of Physiology, Johns Hopkins University, School of Medicine, Baltimore, Maryland; and.
Daijiro HoriDepartment of Anesthesiology and Critical Care Medicine, Johns Hopkins University, School of Medicine, Baltimore, Maryland.
Sheila FlavahanDepartment of Anesthesiology and Critical Care Medicine, Johns Hopkins University, School of Medicine, Baltimore, Maryland.
Jochen SteppanDepartment of Anesthesiology and Critical Care Medicine, Johns Hopkins University, School of Medicine, Baltimore, Maryland.
Nicholas A FlavahanDepartment of Anesthesiology and Critical Care Medicine, Johns Hopkins University, School of Medicine, Baltimore, Maryland.
Dan E BerkowitzDepartment of Anesthesiology and Critical Care Medicine, Johns Hopkins University, School of Medicine, Baltimore, Maryland.
Jennifer L PluznickDepartment of Physiology, Johns Hopkins University, School of Medicine, Baltimore, Maryland; and jpluznick@jhmi.edu.
Johns Hopkins University · USJohns Hopkins Medicine · US

Funding

Translational Research Enhancement CoreP30DK089502 · NIDDK · JOHNS HOPKINS UNIVERSITY · PI ZACHOS, NICHOLAS CONSTANTINE · 2011 to 2020
$12.0M
Microbial Short Chain Fatty Acids and Blood Pressure RegulationR01HL128512 · NHLBI · JOHNS HOPKINS UNIVERSITY · PI PLUZNICK, JENNIFER L · 2016 to 2020
$2.0M
Uncovering the Functional Role of Olfr78 in Blood Pressure RegulationR01DK107726 · NIDDK · JOHNS HOPKINS UNIVERSITY · PI PLUZNICK, JENNIFER L · 2016 to 2020
$1.8M
NHLBI NIH HHS R01 HL128512NIDDK NIH HHS P30 DK089502NIDDK NIH HHS R01 DK107726
6 · The paper itself

Abstract

Short chain fatty acid (SCFA) metabolites are byproducts of gut microbial metabolism that are known to affect host physiology via host G protein-coupled receptor (GPCRs). We previously showed that an acute SCFA bolus decreases blood pressure (BP) in anesthetized mice, an effect mediated primarily via Gpr41. In this study, our aims were to identify the cellular localization of Gpr41 and to determine its role in BP regulation. We localized Gpr41 to the vascular endothelium using RT-PCR: Gpr41 is detected in intact vessels (with endothelium) but is absent from denuded vessels (without endothelium). Furthermore, using pressure myography we confirmed that SCFAs dilate resistance vessels in an endothelium-dependent manner. Since we previously found that Gpr41 mediates a hypotensive response to acute SCFA administration, we hypothesized that Gpr41 knockout (KO) mice would be hypertensive. Here, we report that Gpr41 KO mice have isolated systolic hypertension compared with wild-type (WT) mice; diastolic BP was not different between WT and KO. Older Gpr41 KO mice also exhibited elevated pulse wave velocity, consistent with a phenotype of systolic hypertension; however, there was no increase in ex vivo aorta stiffness (measured by mechanical tensile testing). Plasma renin concentrations were also similar in KO and WT mice. The systolic hypertension in Gpr41 KO is not salt sensitive, as it is not significantly altered on either a high- or low-salt diet. In sum, these studies suggest that endothelial Gpr41 lowers baseline BP, likely by decreasing active vascular tone without altering passive characteristics of the blood vessels, and that Gpr41 KO mice have hypertension of a vascular origin.

Indexed as

AnimalsBacteriaBlood PressureEndothelium, VascularFatty Acids, VolatileFemaleHypertensionMaleMetabolomeMice, Inbred C57BLMice, KnockoutReceptors, G-Protein-CoupledReninSodium Chloride, DietarySus scrofaSystoleFatty Acids, VolatileGpcr41 protein, mouseReceptors, G-Protein-CoupledReninSodium Chloride, DietaryacetateendotheliumGPCRhypertensionmicrobiotapropionate

Identifiers

PMID27664183
PMCPMC6223570
OpenAlexW2522093042

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

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.