Evidence map›Paper›PMID 21280005›Full record

ArticleArthritis and rheumatism2011

Systemic lupus erythematosus serum deposits C4d on red blood cells, decreases red blood cell membrane deformability, and promotes nitric oxide production.

Ionita C Ghiran, Mark L Zeidel, Sergey S Shevkoplyas, Jennie M Burns, George C Tsokos, Vasileios C Kyttaris

Abstract read
In one paragraph

Article in Arthritis and rheumatism, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
1.9field-weighted citation impact, top 16% 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

19 citing papers in PubMed, 45 citations in OpenAlex.

  1. Trial
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  4. Review
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  7. Review
  8. Sickle cell disease biochip: a functional red blood cell adhesion assay for monitoring sickle cell disease.Translational research : the journal of laboratory and clinical medicine · 2016
    Article
  9. Article
  10. Article
  11. Article
  12. Article
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  14. Article
  15. Article
  16. Review
  17. A model for lupus brain disease.Immunological reviews · 2012
    Review
  18. Article
  19. 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

6 authors at 2 institutions in 1 country.

Ionita C GhiranBeth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts 02215, USA.
Mark L Zeidel
Sergey S Shevkoplyas
Jennie M Burns
George C Tsokos
Vasileios C Kyttaris
Beth Israel Deaconess Medical Center · USTulane University · US

Funding

LYMPHOCYTE SIGNALING DEFECTS IN PATIENTS WITH LUPUSR01AI042269 · NIAID · HENRY M. JACKSON FDN FOR THE ADV MIL/MED · PI TSOKOS, GEORGE C · 1998 to 2017
$6.8M
Gene Transcription In SLER01AI049954 · NIAID · HENRY M. JACKSON FDN FOR THE ADV MIL/MED · PI George C Tsokos · 2002 to 2026
$5.8M
HUMAN EOSINOPHILS: MECHANISMS OF FUNCTIONINGR01AI020241 · NIAID · BETH ISRAEL DEACONESS MEDICAL CENTER · PI WELLER, PETER F · 1985 to 2009
$3.5M
NFAT/AP-1 cooperation in SLE T cellsK23AR055672 · NIAMS · BETH ISRAEL DEACONESS MEDICAL CENTER · PI KYTTARIS, VASILEIOS CHRISTOS · 2008 to 2012
$486k
NIAID NIH HHS R01 AI042269NIAID NIH HHS R01 AI049954NIAID NIH HHS R01-AI-20241NIAID NIH HHS R01-AI-42269NIAID NIH HHS R01-AI-49954NIAMS NIH HHS K23 AR055672NIAMS NIH HHS K23-AR-055672
6 · The paper itself

Abstract

objectiveSystemic lupus erythematosus (SLE) is characterized by intravascular activation of the complement system and deposition of complement fragments (C3 and C4) on plasma membranes of circulating cells, including red blood cells (RBCs). The aim of this study was to address whether this process affects the biophysical properties of RBCs.

methodsSerum and RBCs were isolated from patients with SLE and healthy controls. RBCs from healthy universal donors (type O, Rh negative) were incubated with SLE or control serum. We used flow cytometry to assess complement fragment deposition on RBCs. RBC membrane deformability was measured using 2-dimensional microchannel arrays. Protein phosphorylation levels were quantified by Western blotting.

resultsIncubation of healthy universal donor RBCs with sera from patients with SLE, but not with control sera, led to deposition of C4d fragments on the RBCs. Complement-decorated RBCs exhibited significant decreases in both membrane deformability and flickering. Sera from SLE patients triggered a transitory Ca(++) influx in RBCs that was associated with decreased phosphorylation of β-spectrin and with increased phosphorylation of band 3, two key proteins of RBC cytoskeleton. Finally, incubation with SLE sera led to the production of nitric oxide by RBCs, whereas this did not occur with control sera.

conclusionOur data suggest that complement activation in patients with SLE leads to calcium-dependent cytosketeletal changes in RBCs that render them less deformable, probably impairing their flow through capillaries. This phenomenon may negatively affect the delivery of oxygen to the tissues.

Indexed as

ABO Blood-Group SystemAdultBlood DonorsCalciumCells, CulturedComplement C4bErythrocyte DeformabilityErythrocyte MembraneErythrocytesFemaleHumansLupus Erythematosus, SystemicMaleMiddle AgedNitric OxidePeptide FragmentsABO Blood-Group SystemCalciumComplement C4bcomplement C4dNitric OxidePeptide FragmentsSpectrin

Identifiers

PMID21280005
PMCPMC3334350
OpenAlexW2037598869

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.