Evidence map›Paper›PMID 22896039›Full record

ArticleAmerican journal of physiology. Renal physiology2012

NADPH oxidase 4 mediates flow-induced superoxide production in thick ascending limbs.

Nancy J Hong, Jeffrey L Garvin

Abstract read
In one paragraph

Article in American journal of physiology. Renal physiology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed
2.8field-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

24 citing papers in PubMed, 30 citations in OpenAlex.

  1. Article
  2. Article
  3. Hydrogen peroxide (HScientific reports · 2021
    Article
  4. Article
  5. Article
  6. Article
  7. Effects of reactive oxygen species on renal tubular transport.American journal of physiology. Renal physiology · 2019
    Review
  8. Review
  9. Article
  10. Review
  11. Diabetes and Kidney Disease: Role of Oxidative Stress.Antioxidants & redox signaling · 2016
    Review
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Review
  20. A radical approach to balancing the tides of tubular flow.American journal of physiology. Renal physiology · 2014
    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

2 authors at 2 institutions in 1 country.

Nancy J HongHypertension and Vascular Research Div., Henry Ford Hospital, 2799 West Grand Blvd., Detroit, MI 48202, USA.
Jeffrey L Garvin
Henry Ford Hospital · USWayne State University · US

Funding

VASOACTIVE HORMONES IN THE REGULATION OF BLOOD PRESSUREP01HL028982 · NHLBI · HENRY FORD HOSPITAL · PI ORTIZ, PABLO A. · 1985 to 2017
$39.8M
Tubuloglomerular Feedback Regulation by Carbon MonoxideP01HL090550 · NHLBI · HENRY FORD HEALTH SYSTEM · PI ORTIZ, PABLO A. · 2009 to 2013
$10.2M
Salt-Sensitive Hypertension: Role of Renal SuperoxideR01HL070985 · NHLBI · HENRY FORD HEALTH SYSTEM · PI Jeffrey L. Garvin · 2002 to 2026
$6.3M
NHLBI NIH HHS HL28982NHLBI NIH HHS HL70985NHLBI NIH HHS HL90550NHLBI NIH HHS P01 HL028982NHLBI NIH HHS P01 HL090550NHLBI NIH HHS R01 HL070985
6 · The paper itself

Abstract

We previously showed that luminal flow stimulates thick ascending limb (TAL) superoxide (O(2)(-)) production by stretching epithelial cells and increasing NaCl transport, and reported that the major source of flow-induced O(2)(-) is NADPH oxidase (Nox). However, the specific Nox isoform involved is unknown. Of the three isoforms expressed in the kidney-Nox1, Nox2, and Nox4-we hypothesized that Nox4 is responsible for flow-induced O(2)(-) production in TALs. Measurable flow-induced O(2)(-) production at physiological flow rates of 0, 5, 10, and 20 nl/min was 5 ± 1, 9 ± 2, 36 ± 6, and 66 ± 8 AU/s, respectively. RT-PCR detected mRNA for all three Nox isoforms in the TAL. The order of RNA abundance was Nox2 > Nox4 >>> Nox1. Since all three isoforms are expressed in TALs and pharmacological inhibitors are not selective, we used rats transduced with siRNA and knockout mice. Nox4 siRNA knocked down Nox4 mRNA expression by 63 ± 7% but did not reduce Nox1 or Nox2 mRNA. Flow-induced O(2)(-) was 18 ± 9 AU/s in TALs transduced with Nox4 siRNA compared with 77 ± 9 AU/s in tubules transduced with scrambled siRNA. Flow-induced O(2)(-) was 81 ± 5 AU/s in Nox2 knockout mice compared with 83 ± 13 AU/s in wild-type mice. In TALs transduced with Nox1 siRNA, flow-induced O(2)(-) was 82 ± 7 AU/s. We conclude that Nox4 mediates flow-induced O(2)(-) production in TALs.

Indexed as

AnimalsLoop of HenleMiceMice, KnockoutNADPH Oxidase 4NADPH OxidasesRatsRats, TransgenicReactive Oxygen SpeciesSuperoxidesNADPH Oxidase 4NADPH OxidasesNox4 protein, mouseReactive Oxygen SpeciesSuperoxides

Identifiers

PMID22896039
PMCPMC3469675
OpenAlexW2154985571

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.