Evidence map›Paper›PMID 23482378›Full record

ArticleAmerican journal of hypertension2013

Antihypertensive actions of moderate hyperbilirubinemia: role of superoxide inhibition.

David E Stec, Megan V Storm, Brandon E Pruett, Monette U Gousset

Open access · bronzeAbstract readComparative Study
In one paragraph

Article in American journal of hypertension, 2013. 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
1.0field-weighted citation impact, top 24% 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, 29 citations in OpenAlex.

  1. Review
  2. Review
  3. Review
  4. Article
  5. Review
  6. Article
  7. Bilirubin as a metabolic hormone: the physiological relevance of low levels.American journal of physiology. Endocrinology and metabolism · 2021
    Review
  8. Article
  9. Review
  10. Review
  11. Article
  12. Article
  13. Bilirubin, a Cardiometabolic Signaling Molecule.Hypertension (Dallas, Tex. : 1979) · 2018
    Review
  14. Bilirubin, a new therapeutic for kidney transplant?Transplantation reviews (Orlando, Fla.) · 2018
    Review
  15. Hyperbilirubinemia, Hypertension, and CKD: the Links.Current hypertension reports · 2017
    Review
  16. Article
  17. Article
  18. Article
  19. Article
  20. 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

4 authors at 1 institution in 1 country.

David E StecDepartment of Physiology & Biophysics, Center for Excellence in Cardiovascular-Renal Research, University of Mississippi Medical Center, Jackson, Mississippi, USA. dstec@umc.edu
Megan V Storm
Brandon E Pruett
Monette U Gousset
University of Mississippi Medical Center · US

Funding

STRUCTURAL VASCULAR ADAPTATION OF THE MICROCIRCULATIONP01HL051971 · NHLBI · UNIVERSITY OF MISSISSIPPI MEDICAL CENTER · PI HESTER, ROBERT L · 1993 to 2018
$39.4M
The Renal Medulla and HypertensionR01HL088421 · NHLBI · UNIVERSITY OF MISSISSIPPI MED CTR · PI STEC, DAVID E · 2008 to 2012
$1.9M
NHLBI NIH HHS HL088421NHLBI NIH HHS P01 HL051971NHLBI NIH HHS P01HL-51971NHLBI NIH HHS R01 HL088421
6 · The paper itself

Abstract

backgroundModerate (approximately 2-fold) increases in plasma unconjugated bilirubin levels are able to attenuate the development of angiotensin II (Ang II)-dependent hypertension. To determine the specific role of decreases in superoxide production to the blood pressure-lowering effects of moderate hyperbilirubinemia (MHyB), we performed this study, in which the Nicotinamide adenine dinucleotide phosphate (NADPH) oxidase inhibitor apocynin was given to Ang II-infused mice in the presence and absence of moderate hyperbilirubinemia.

methodsApocynin (14mM) was administered in the drinking water prior to treatment with UDP-glucuronosyltransferase 1A1 antisense morpholino (16 μg/kg), which was administered by intravenous injection every third day. Treatments were started before the implantation of Ang II-containing minipumps (1μg/kg/min) and continued throughout the protocol.

resultsAng II infusion increased blood pressure to 145±2mm Hg. Apocynin treatment alone reduced blood pressure to 135±5mm Hg, whereas MHyB alone decreased blood pressure to 118±5mm Hg in Ang II-infused mice. Prior inhibition of NADPH oxidase with apocynin did not result in a further decrease in blood pressure in MHyB mice, which averaged 117±3mm Hg (n = 6 mice per group). In aortic preparations, apocynin treatment decreased Ang II-mediated superoxide production from 2433±120 relative light units (RLU)/min/mg to 1851±126 RLU/min/mg (n = 4 mice per group), which was similar to levels observed in MHyB mice alone (1473±132 RLU/min/mg) or in combination with apocynin (1503±115 RLU/min/mg).

conclusionsOur results indicate that MHyB lowers blood pressure by a mechanism that is partially dependent on the inhibition of superoxide production.

Indexed as

AcetophenonesAngiotensin IIAnimalsBilirubinBlood PressureDisease Models, AnimalDrug ImplantsEnzyme InhibitorsHyperbilirubinemiaHypertensionMaleMiceMice, Inbred C57BLSuperoxidesVasoconstrictor AgentsAcetophenonesacetovanilloneAngiotensin IIBilirubinDrug ImplantsEnzyme InhibitorsSuperoxidesVasoconstrictor Agentsangiotensin IIbilirubinblood pressureheme oxygenasehypertensionNADPH oxidase

Identifiers

PMID23482378
PMCPMC3731819
OpenAlexW2065175069

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.