Evidence map›Paper›PMID 22028476›Full record

ArticleBlood2012

Relaxin increases human endothelial progenitor cell NO and migration and vasculogenesis in mice.

Mark S Segal, Laura Sautina, Shiyu Li, YanPeng Diao, Alexander I Agoulnik, Jennifer Kielczewski, Jonathan T McGuane, Maria B Grant, Kirk P Conrad

Open access · bronzeAbstract read
In one paragraph

Article in Blood, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers.

0numbers the graph read from it
0cells of the map it votes in
31citing papers in PubMed
6.0field-weighted citation impact, top 4% 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

31 citing papers in PubMed, 55 citations in OpenAlex.

  1. Endothelial Progenitor Cells in Life, Pregnancy and Disease.Expert reviews in molecular medicine · 2025
    Review
  2. The landscape ofBiomolecules & biomedicine · 2024
    Article
  3. Article
  4. Endothelial progenitor cells in pregnancy-related diseases.Clinical science (London, England : 1979) · 2023
    Review
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Anti-fibrotic actions of relaxin.British journal of pharmacology · 2017
    Review
  15. Review
  16. The actions of relaxin on the human cardiovascular system.British journal of pharmacology · 2017
    Review
  17. Article
  18. Review
  19. Review
  20. Review
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

9 authors at 2 institutions in 1 country.

Mark S SegalDivision of Nephrology/Department of Medicine, Herbert Wertheim College of Medicine, Florida International University, Miami, USA. segalms@medicine.ufl.edu
Laura Sautina
Shiyu Li
YanPeng Diao
Alexander I Agoulnik
Jennifer Kielczewski
Jonathan T McGuane
Maria B Grant
Kirk P Conrad
Florida College · USFlorida International University · US

Funding

UF Clinical and Translational Science AwardUL1TR000064 · NCATS · UNIVERSITY OF FLORIDA · PI NELSON, DAVID R · 2012 to 2014
$12.2M
NITRIC OXIDE IN THE PATHOGENESIS OF DIABETIC RETINOPATHYR01EY012601 · NEI · UNIVERSITY OF FLORIDA · PI Julia V Busik, Maria Bartolomeo Grant · 1998 to 2026
$9.6M
Targeting the IGF-1 System in Retinal AngiogenesisR01EY007739 · NEI · UNIVERSITY OF FLORIDA · PI ABCOUWER, STEVEN F, GRANT, MARIA BARTOLOMEO · 1995 to 2015
$5.4M
GENETIC CONTROL OF EARLY TESTICULAR DESCENTR01HD037067 · NICHD · FLORIDA INTERNATIONAL UNIVERSITY · PI AGOULNIK, ALEXANDER I · 2000 to 2008
$2.3M
Relaxin: The 'Elusive'Vasodilator of PregnancyR01HL067937 · NHLBI · UNIVERSITY OF FLORIDA · PI CONRAD, KIRK P · 2001 to 2009
$2.2M
NO Dysregulation of the Peripheral Clock in Diabetic ComplicationsR01DK090730 · NIDDK · UNIVERSITY OF FLORIDA · PI GRANT, MARIA BARTOLOMEO · 2010 to 2013
$1.3M
HORMONES &NEOVASCULARIZATION IN DIABETIC RETINOPATHYR29EY007739 · NEI · UNIVERSITY OF FLORIDA · PI GRANT, MARIA B · 1989 to 1993
–
NCATS NIH HHS UL1 TR000064NEI NIH HHS EY07739NEI NIH HHS R01 EY007739NEI NIH HHS R01 EY012601NEI NIH HHS R01 EY12601NHLBI NIH HHS R01 HL067937NICHD NIH HHS R01 HD037067NIDDK NIH HHS R01 DK090730
6 · The paper itself

Abstract

The ovarian peptide hormone, relaxin, circulates during pregnancy, contributing to profound maternal vasodilation through endothelial and nitric oxide (NO)-dependent mechanisms. Circulating numbers of bone marrow-derived endothelial cells (BMDECs), which facilitate angiogenesis and contribute to repair of vascular endothelium, increase during pregnancy. Thus, we hypothesized that relaxin enhances BMDEC NO production, circulating numbers, and function. Recombinant human relaxin-2 (rhRLX) stimulated PI3K/Akt B-dependent NO production in human BMDECs within minutes, and activated BMDEC migration that was inhibited by L-N(G)-nitroarginine methyl ester. In BMDECs isolated from relaxin/insulin-like family peptide receptor 2 gene (Rxfp2) knockout and wild-type mice, but not Rxfp1 knockout mice, rhRLX rapidly increased NO production. Similarly, rhRLX increased circulating BMDEC number in Rxfp2 knockout and wild-type mice, but not Rxfp1 knockout mice as assessed by colony formation and flow cytometry. Taken together, these results indicate that relaxin effects BMDEC function through the RXFP1 receptor. Finally, both vascularization and incorporation of GFP-labeled BMDECs were stimulated in rhRLX-impregnated Matrigel pellets implanted in mice. To conclude, relaxin is a novel regulator of BMDECs number and function, which has implications for angiogenesis and vascular remodeling in pregnancy, as well as therapeutic potential in vascular disease.

Indexed as

Cell MovementNeovascularization, PhysiologicAnimalsCell DifferentiationCells, CulturedEndothelium, VascularFemaleFlow CytometryHumansMaleMiceMice, Inbred C57BLMice, KnockoutNitric OxidePhosphatidylinositol 3-KinasesPregnancyNitric OxidePhosphatidylinositol 3-KinasesProto-Oncogene Proteins c-aktReceptors, G-Protein-CoupledRelaxinRXFP2 protein, mouse

Identifiers

PMID22028476
PMCPMC3257020
OpenAlexW2049682064

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.