Regulatory T-cell Subpopulations in Severe or Early-onset Preeclampsia

Roland Boij, Jenny Mjösberg, Judit Svensson-Arvelund, Maria Hjorth, Göran Berg, Leif Matthiesen, Maria C. Jenmalm, Jan Ernerudh

Research output: Contribution to journalArticlepeer-review

30 Scopus citations

Abstract

Problem: A deficiency in regulatory T (Treg) cells causing reduced immune regulatory capacity has been proposed in preeclampsia. Objective: Utilizing recent advances in flow cytometry phenotyping, we aimed to assess whether a deficiency of Treg subpopulations occurs in preeclampsia. Method of study: Six-color flow cytometry was used for Treg phenotyping in 18 preeclamptic women (one early-onset, one severe and 16 both), 20 women with normal pregnancy, and 20 non-pregnant controls. Results: No differences were found in major Treg populations including CD127lowCD25+/CD127owFOXP3+, resting (FOXP3dimCD45RA+), and activated (FOXP3brightCD45RA-) Treg cells, whereas preeclamptic women showed increased CTLA-4+ and CCR4+ proportions within resting/activated Treg populations. Corticosteroid treatment prior to blood sampling (n = 10) affected the distribution of Treg populations. Conclusions: Although we found no major alterations in circulating Treg frequencies, differences in CTLA-4+ and CCR4+ frequencies suggest a migratory defect of Treg cells in preeclampsia. Corticosteroid treatment should be taken into account when evaluating Treg cells.

Original languageEnglish
Pages (from-to)368-378
Number of pages11
JournalAmerican Journal of Reproductive Immunology
Volume74
Issue number4
DOIs
StatePublished - 1 Oct 2015
Externally publishedYes

Keywords

  • Early-onset preeclampsia
  • Preeclampsia
  • Pregnancy
  • Regulatory T cells

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