B7 Costimulation and Intracellular Indoleamine-2,3-Dioxygenase Expression in Peripheral Blood of Healthy Pregnant and Pre-Eclamptic Women

Gergely Toldi, Barna Vásárhelyi, Eniko A. Biró, Gergely Fügedi, János Rigó, Attila Molvarec

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Problem: We determined the frequency of activated (CD11b+) monocytes expressing B7-1, B7-2, B7-H1, and B-7H2, and that of T cells and T helper cells expressing CD28, CTLA-4, PD-1, and ICOS in peripheral blood samples from normal pregnant (NP) and pre-eclamptic (PE) women. We also examined the intracellular expression of indoleamine-2,3-dioxygenase (IDO). Method of study: We measured the expression of the above markers using flow-cytometry in peripheral blood samples from 20 NP and 20 PE women in the third trimester. Results: The frequency of B7-1 and B7-2 expressing activated monocytes and that of IDO expressing T-lymphocytes was lower in PE than in NP. Conclusion: Lower expression of B7-1 and B7-2 proteins on peripheral monocytes in PE might indicate a secondary regulatory mechanism in response to the ongoing systemic maternal inflammation. IDO plays an important role in the pregnancy-specific immune tolerance, and might be a contributing factor in the pathogenesis of PE.

Original languageEnglish
Pages (from-to)264-271
Number of pages8
JournalAmerican Journal of Reproductive Immunology
Volume69
Issue number3
DOIs
Publication statusPublished - Mar 1 2013

Keywords

  • B7
  • CD28
  • Indoleamine-2,3-dioxygenase, monocyte
  • Pre-eclampsia
  • T cell

ASJC Scopus subject areas

  • Immunology and Allergy
  • Immunology
  • Reproductive Medicine
  • Obstetrics and Gynaecology

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