Evidence map›Paper›PMID 21890688›Full record

ArticleAmerican journal of physiology. Heart and circulatory physiology2011

Nitric oxide formation by lymphatic bulb and valves is a major regulatory component of lymphatic pumping.

H Glenn Bohlen, Olga Yu Gasheva, David C Zawieja

Open access · greenAbstract read
In one paragraph

Article in American journal of physiology. Heart and circulatory physiology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 79 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
79citing papers in PubMed, 1 pooled it
6.8field-weighted citation impact, top 3% 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

79 citing papers in PubMed, 1 synthesis or guideline pooled it, 106 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Review
  4. Pacemaking in the lymphatic system.The Journal of physiology · 2026
    Review
  5. Review
  6. Review
  7. Article
  8. Article
  9. Article
  10. Article
  11. Understanding the Lymphatic System: Tissue-on-Chip Modeling.Annual review of biomedical engineering · 2025
    Review
  12. Article
  13. Review
  14. Article
  15. Article
  16. Review
  17. Article
  18. Review
  19. Article
  20. Article

19 more citing papers are in PubMed but not listed here.

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

3 authors at 1 institution in 1 country.

H Glenn BohlenDepartment of Cellular and Integrative Physiology, Indiana University Medical School, Indianapolis, IN 46202, USA. gbohlen@iupui.edu
Olga Yu Gasheva
David C Zawieja
Indiana University – Purdue University Indianapolis · US

Funding

Influences of Lymph Flow on the Lymphatic PumpR01HL070308 · NHLBI · TEXAS A&M UNIVERSITY HEALTH SCIENCE CTR · PI ZAWIEJA, DAVID CARL · 2003 to 2010
$2.4M
Evaluation of Lymph Flow and FunctionR21HL085659 · NHLBI · TEXAS A&M UNIVERSITY HEALTH SCIENCE CTR · PI MOORE, JAMES E, ZAWIEJA, DAVID CARL · 2008 to 2009
$387k
NHLBI NIH HHS R01 HL070308NHLBI NIH HHS R01 HL-70308NHLBI NIH HHS R21 HL085659
6 · The paper itself

Abstract

Microscopic lymphatics produce nitric oxide (NO) during contraction as flow shear activates the endothelial cells. The valve leaflets and bulbous valve housing contain a large amount of endothelial nitric oxide synthase (eNOS) due both to many endothelial cells and increased expression of eNOS. Direct NO measurements indicate the valve area has a 30-50% higher NO concentration ([NO]) than tubular regions although both regions generate equivalent relative increases in [NO] with each contraction. We hypothesize that 1) the greater eNOS and [NO] of the bulb region would have greater effects to lower pumping activity of the overall lymphatic than occurs in tubular regions and 2), the elevated [NO] in the bulb region may be because of high NO production in the valve leaflets that diffuses to the wall of the bulb. Measurement of [NO] with a micropipette inside the lymphatic bulb revealed the valve leaflets generate ~50% larger [NO] than the bulb wall in the in vivo rat mesenteric lymphatics. The valves add NO to the lymph that quickly diffuses to the bulb wall. Bradykinin locally released iontophoretically from a micropipette on both bulbs and tubes increased the [NO] in a dose-dependent manner up to ~50%, demonstrating agonist activation of the NO pathway. However, pumping output determined by contraction frequency and stroke volume decreased much more for the bulb than tubular areas in response to the bradykinin. In effect, NO generation by the bulb area and its valves limits the pumped flow of the total lymphatic by lowering frequency and stroke volume of individual contractions.

Indexed as

Pulsatile FlowAnimalsBiomechanical PhenomenaBradykininDose-Response Relationship, DrugEnzyme InhibitorsIontophoresisLymphLymphatic VesselsMaleMuscle ContractionNG-Nitroarginine Methyl EsterNitric OxideNitric Oxide Synthase Type IIIRatsRats, Sprague-DawleyBradykininEnzyme InhibitorsNG-Nitroarginine Methyl EsterNitric OxideNitric Oxide Synthase Type IIINos3 protein, rat

Identifiers

PMID21890688
PMCPMC3213974
OpenAlexW2043208388

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.