Evidence map›Paper›PMID 23685261›Full record

ArticleMolecular immunology2013

Complement activation is critical for placental ischemia-induced hypertension in the rat.

Kathryn E Lillegard, Alex C Johnson, Sarah J Lojovich, Ashley J Bauer, Henry C Marsh, Jeffrey S Gilbert, Jean F Regal

Open access · greenAbstract read
In one paragraph

Article in Molecular immunology, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 37 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
37citing papers in PubMed, 1 pooled it
4.5field-weighted citation impact, top 6% 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

37 citing papers in PubMed, 1 synthesis or guideline pooled it, 51 citations in OpenAlex.

  1. Pooled it
  2. Complement factor B activation in patients with preeclampsia.Journal of reproductive immunology · 2015
    Trial
  3. Review
  4. Article
  5. Review
  6. Is the central complement component C3 altered in the synergy of HIV infection and preeclampsia?European journal of obstetrics & gynecology and reproductive biology: X · 2023
    Article
  7. Article
  8. Review
  9. Review
  10. Article
  11. Review
  12. Review
  13. Review
  14. Vascular mechanisms and molecular targets in hypertensive pregnancy and preeclampsia.American journal of physiology. Heart and circulatory physiology · 2020
    Review
  15. Review
  16. Role of B1 and B2 lymphocytes in placental ischemia-induced hypertension.American journal of physiology. Heart and circulatory physiology · 2019
    Article
  17. Article
  18. Article
  19. The role of the complement system in HIV infection and preeclampsia.Inflammation research : official journal of the European Histamine Research Society ... [et al.] · 2019
    Review
  20. Review
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

7 authors at 3 institutions in 1 country.

Kathryn E LillegardDepartment of Biomedical Sciences, University of Minnesota Medical School Duluth, Duluth, MN 55812, USA. lille067@umn.edu
Alex C Johnson
Sarah J Lojovich
Ashley J Bauer
Henry C Marsh
Jeffrey S Gilbert
Jean F Regal
University of Minnesota, Duluth · USCelldex Therapeutics (United States) · USUniversity of Oregon · US

Funding

Pathway to Advanced Degrees in Life SciencesR25GM086669 · NIGMS · UNIVERSITY OF MINNESOTA DULUTH · PI ANDERSON, GRANT W, CLARKE, BENJAMIN L · 2009 to 2017
$2.8M
Complement Activation in Pregnancy and HypertensionR15HL109843 · NHLBI · UNIVERSITY OF MINNESOTA DULUTH · PI REGAL, JEAN F. · 2011 to 2015
$1.3M
Exercise for the Treatment of Hypertension in Pregnancy: Mechanisms and MediatorsR01HL114096 · NHLBI · UNIVERSITY OF OREGON · PI GILBERT, JEFFREY S · 2012 to 2014
$695k
NHLBI NIH HHS HL114096NHLBI NIH HHS R01 HL114096NHLBI NIH HHS R15 HL109843NIGMS NIH HHS R25 GM086669
6 · The paper itself

Abstract

Preeclampsia is a major obstetric problem defined by new-onset hypertension and proteinuria associated with compromised placental perfusion. Although activation of the complement system is increased in preeclampsia compared to normal pregnancy, it remains unclear whether excess complement activation is a cause or consequence of placental ischemia. Therefore, we hypothesized that complement activation is critical for placental ischemia-induced hypertension. We employed the reduced utero-placental perfusion pressure (RUPP) model of placental ischemia in the rat to induce hypertension in the third trimester and evaluated the effect of inhibiting complement activation with a soluble recombinant form of an endogenous complement regulator, human complement receptor 1 (sCR1; CDX-1135). On day 14 of a 21-day gestation, rats received either RUPP or Sham surgery and 15 mg/kg/day sCR1 or saline intravenously on days 14-18. Circulating complement component 3 decreased and complement activation product C3a increased in RUPP vs. Sham (p<0.05), indicating complement activation had occurred. Mean arterial pressure (MAP) measured on day 19 increased in RUPP vs. Sham rats (109.8±2.8 mmHg vs. 93.6±1.6 mmHg). Treatment with sCR1 significantly reduced elevated MAP in RUPP rats (98.4±3.6 mmHg, p<0.05) and reduced C3a production. Vascular endothelial growth factor (VEGF) decreased in RUPP compared to Sham rats, and the decrease in VEGF was not affected by sCR1 treatment. Thus, these studies have identified a mechanistic link between complement activation and the pregnancy complication of hypertension apart from free plasma VEGF and have identified complement inhibition as a potential treatment strategy for placental ischemia-induced hypertension in preeclampsia.

Indexed as

AnimalsArterial PressureCarotid ArteriesComplement ActivationComplement C3Dose-Response Relationship, DrugFemaleHumansHypertensionIn Vitro TechniquesIschemiaMaleNitroprussidePlacentaPre-EclampsiaPregnancyComplement C3NitroprussideReceptors, Complementsoluble complement inhibitor 1Vascular Endothelial Growth Factor AVascular Endothelial Growth Factor Receptor-1Vasodilator Agents

Identifiers

PMID23685261
PMCPMC3687024
OpenAlexW2043893206

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.