Evidence map›Paper›PMID 34549531›Full record

ArticlePhysiological reports2021

Olfactory receptor 78 modulates renin but not baseline blood pressure.

Brian G Poll, Jiaojiao Xu, Kunal Gupta, Tyler B Shubitowski, Jennifer L Pluznick

Open access · goldAbstract read
In one paragraph

Article in Physiological reports, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
2.1field-weighted citation impact, top 13% 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

20 citing papers in PubMed, 26 citations in OpenAlex.

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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

5 authors at 1 institution in 1 country.

Brian G PollDepartment of Physiology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA.
Jiaojiao XuDepartment of Physiology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA.
Kunal GuptaDepartment of Physiology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA.
Tyler B ShubitowskiDepartment of Physiology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA.
Jennifer L PluznickDepartment of Physiology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA.ORCID 0000-0003-3621-2665
Johns Hopkins University · US

Funding

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
Elucidating the effects of Olfactory Receptor 78 on blood pressure and renin releaseF31HL144061 · NHLBI · JOHNS HOPKINS UNIVERSITY · PI POLL, BRIAN · 2018 to 2019
$88k
NHLBI NIH HHS F31 HL144061NHLBI NIH HHS R01 HL128512NIDDK NIH HHS R01 DK107726
6 · The paper itself

Abstract

Olfactory receptor 78 (Olfr78) is a G protein-coupled receptor (GPCR) that is expressed in the juxtaglomerular apparatus (JGA) of the kidney as well as the peripheral vasculature, and is activated by gut microbial metabolites. We previously reported that Olfr78 plays a role in renin secretion in isolated glomeruli, and that Olfr78 knockout (KO) mice have lower plasma renin activity. We also noted that in anesthetized mice, Olfr78KO appeared to be hypotensive. In this study, we used radiotelemetry to determine the role of Olfr78 in chronic blood pressure regulation. We found that the blood pressure of Olfr78KO mice is not significantly different than that of their WT counterparts at baseline, or on high- or low-salt diets. However, Olfr78KO mice have depressed heart rates on high-salt diets. We also report that Olfr78KO mice have lower renin protein levels associated with glomeruli. Finally, we developed a mouse where Olfr78 was selectively knocked out in the JGA, which phenocopied the lower renin association findings. In sum, these experiments suggest that Olfr78 modulates renin, but does not play an active role in blood pressure regulation at baseline, and is more likely activated by high levels of short chain fatty acids or hypotensive events. This study provides important context to our knowledge of Olfr78 in BP regulation.

Indexed as

Blood PressureAnimalsFemaleHypertensionKidneyMaleMiceMice, Inbred C57BLReceptors, OdorantReninOlfr78 protein, mouseReceptors, OdorantReninblood pressureolfactory receptorsrenin

Identifiers

PMID34549531
PMCPMC8455973
OpenAlexW3201135121

What OpenQuestion holds

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LicenceCC BY
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.