Evidence map›Paper›PMID 34049180›Full record

ArticleJournal of photochemistry and photobiology. B, Biology2021

Red light stimulates vasodilation through extracellular vesicle trafficking.

Dorothee Weihrauch, Agnes Keszler, Brian Lindemer, John Krolikowski, Nicole L Lohr

Open access · greenAbstract read
In one paragraph

Article in Journal of photochemistry and photobiology. B, Biology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
3.1field-weighted citation impact, top 8% 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

16 citing papers in PubMed, 29 citations in OpenAlex.

  1. Biomedical optics express · 2026
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  2. Review
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  6. Red light mediates the exocytosis of vasodilatory vesicles from cultured endothelial cells: a cellular, and ex vivo murine model.Photochemical & photobiological sciences : Official journal of the European Photochemistry Association and the European Society for Photobiology · 2024
    Article
  7. Article
  8. Review
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  15. Frontiers in physiology · 2022
    Article
  16. Article
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 2 institutions in 1 country.

Dorothee WeihrauchDepartment of Anesthesiology, Medical College of Wisconsin, USA. Electronic address: dorothee@mcw.edu.
Agnes KeszlerDepartment of Medicine, Division of Cardiovascular Medicine, Medical College of Wisconsin, USA. Electronic address: akeszler@mcw.edu.
Brian LindemerDepartment of Medicine, Division of Cardiovascular Medicine, Medical College of Wisconsin, USA. Electronic address: blindeme@mcw.edu.
John KrolikowskiDepartment of Anesthesiology, Medical College of Wisconsin, USA. Electronic address: jkrolik@mcw.edu.
Nicole L LohrDepartment of Medicine, Division of Cardiovascular Medicine, Medical College of Wisconsin, USA; Cardiovascular Center, Medical College of Wisconsin, USA; Clement J Zablocki VA Medical Center, USA. Electronic address: ntonn@mcw.edu.
Medical College of Wisconsin · USMilwaukee VA Medical Center · US

Funding

Small molecule NO precursors as a bioactive source of NO in vasodilation and angiogenesisR01HL139557 · NHLBI · UNIVERSITY OF ALABAMA AT BIRMINGHAM · PI LOHR, NICOLE · 2019 to 2023
$2.1M
Red light mediated trafficking of microvesicles as a mechanism for vasodilationI01BX004675 · VA · CLEMENT J. ZABLOCKI VA MEDICAL CENTER · PI Nicole Lohr · 2020 to 2026
–
Energy dependent reversal of endothelial dysfunction in wound healingIK2BX002426 · VA · CLEMENT J. ZABLOCKI VA MEDICAL CENTER · PI LOHR, NICOLE · 2015 to 2018
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BLRD VA I01 BX004675BLRD VA IK2 BX002426NHLBI NIH HHS R01 HL139557
6 · The paper itself

Abstract

Red light (670 nm) promotes ex vivo dilation of blood vessels in a nitric oxide (NO) dependent, but eNOS independent manner by secreting a quasi-stable and transferable vasoactive substance with the characteristics of S-nitrosothiols (RSNO) from the endothelium. In the present work we establish that 670 nm light mediated vasodilation occurs in vivo and is physiologically stable. Light exposure depletes intracellular S-nitroso protein while concomitantly increasing extracellular RNSO, suggesting vesicular pathways are involved. Furthermore, we demonstrate this RSNO vasodilator is embedded in extracellular vesicles (EV). The action of red light on vesicular trafficking appears to increase expression of endosome associated membrane protein CD63 in bovine aortic endothelial cells, enhance endosome localization in the endothelium, and induce exit of RSNO containing EVs from murine facialis arteries. We suggest a mechanism by which the concerted actions of 670 nm light initiate formation of RSNO containing EVs which exit the endothelium and trigger relaxation of smooth muscle cells.

Indexed as

LightAnimalsCattleCells, CulturedEndothelium, VascularExtracellular VesiclesMiceMice, Inbred C57BLNitroso CompoundsSulfhydryl CompoundsVasodilationNitroso CompoundsSulfhydryl CompoundsEndotheliumExocytosisExtracellular vesiclesNitric oxidePhotobiomodulationRed lightS-nitrosothiol

Identifiers

PMID34049180
PMCPMC8240139
OpenAlexW3162806326

What OpenQuestion holds

Textmetadata
LicenceTDM
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.