Evidence map›Paper›PMID 31487266›Full record

ArticleJCI insight2019

Loss of smooth muscle CYB5R3 amplifies angiotensin II-induced hypertension by increasing sGC heme oxidation.

Brittany G Durgin, Scott A Hahn, Heidi M Schmidt, Megan P Miller, Neha Hafeez, Ilka Mathar, Daniel Freitag, Peter Sandner, Adam C Straub

Open access · goldAbstract read
In one paragraph

Article in JCI insight, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
2.4field-weighted citation impact, top 10% 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

23 citing papers in PubMed, 52 citations in OpenAlex.

  1. Article
  2. Article
  3. Beta arrestin 1 is a key regulator of pulmonary vascular tone.Proceedings of the National Academy of Sciences of the United States of America · 2026
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  5. Soluble guanylate cyclase stimulators and activators as potential antihypertensive drugs.Hypertension research : official journal of the Japanese Society of Hypertension · 2025
    Review
  6. Article
  7. Article
  8. Article
  9. Bedding as a variable affecting fasting blood glucose and vascular physiology in mice.American journal of physiology. Heart and circulatory physiology · 2023
    Article
  10. Article
  11. Review
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Review
  20. Review
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

9 authors at 3 institutions in 2 countries.

Brittany G DurginHeart, Lung, Blood and Vascular Medicine Institute, and.
Scott A HahnHeart, Lung, Blood and Vascular Medicine Institute, and.
Heidi M SchmidtHeart, Lung, Blood and Vascular Medicine Institute, and.
Megan P MillerHeart, Lung, Blood and Vascular Medicine Institute, and.
Neha HafeezHeart, Lung, Blood and Vascular Medicine Institute, and.
Ilka MatharBayer AG, Wuppertal, Germany.
Daniel FreitagBayer AG, Wuppertal, Germany.
Peter SandnerBayer AG, Wuppertal, Germany.
Adam C StraubHeart, Lung, Blood and Vascular Medicine Institute, and.
Bayer (Germany) · DEUniversity of Pittsburgh · USMedizinische Hochschule Hannover · DE

Funding

T32 Research Training in Diabetes and EndocrinologyT32DK007052 · NIDDK · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI ROBERT M O'DOHERTY · 1986 to 2026
$6.3M
Novel role of smooth muscle B5 reductase in Sickle Cell DiseaseR01HL133864 · NHLBI · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI STRAUB, ADAM CARL · 2016 to 2019
$2.4M
Vascular Smooth Muscle and Blood Pressure Regulation By Cyb5R3²R01HL128304 · NHLBI · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI STRAUB, ADAM CARL · 2016 to 2020
$2.4M
NHLBI NIH HHS R01 HL128304NHLBI NIH HHS R01 HL133864NIDDK NIH HHS T32 DK007052
6 · The paper itself

Abstract

Nitric oxide regulates BP by binding the reduced heme iron (Fe2+) in soluble guanylyl cyclase (sGC) and relaxing vascular smooth muscle cells (SMCs). We previously showed that sGC heme iron reduction (Fe3+ → Fe2+) is modulated by cytochrome b5 reductase 3 (CYB5R3). However, the in vivo role of SMC CYB5R3 in BP regulation remains elusive. Here, we generated conditional smooth muscle cell-specific Cyb5r3 KO mice (SMC CYB5R3-KO) to test if SMC CYB5R3 loss affects systemic BP in normotension and hypertension via regulation of the sGC redox state. SMC CYB5R3-KO mice exhibited a 5.84-mmHg increase in BP and impaired acetylcholine-induced vasodilation in mesenteric arteries compared with controls. To drive sGC oxidation and elevate BP, we infused mice with angiotensin II. We found that SMC CYB5R3-KO mice exhibited a 14.75-mmHg BP increase, and mesenteric arteries had diminished nitric oxide-dependent vasodilation but increased responsiveness to sGC heme-independent activator BAY 58-2667 over controls. Furthermore, acute injection of BAY 58-2667 in angiotensin II-treated SMC CYB5R3-KO mice showed greater BP reduction compared with controls. Together, these data provide the first in vivo evidence to our knowledge that SMC CYB5R3 is an sGC heme reductase in resistance arteries and provides resilience against systemic hypertension development.

Indexed as

Angiotensin IIAnimalsBenzoatesBlood PressureCytochrome-B(5) ReductaseGenotypeHemeHypertensionMaleMiceMice, Inbred C57BLMice, KnockoutMuscle, Smooth, VascularNitric OxideOxidation-ReductionSoluble Guanylyl CyclaseAngiotensin IIBAY 58-2667BenzoatesCytochrome-B(5) ReductaseHemeNitric OxideSoluble Guanylyl CyclaseGuanylate cyclaseHypertensionNitric oxideVascular Biology

Identifiers

PMID31487266
PMCPMC6795404
OpenAlexW2972150425

What OpenQuestion holds

Textmetadata
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.