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  • Solders, M.Karolinska Institutet (författare)

Mature naive B cells are retained in the placental intervillous blood and positively associate with specific chemokines in full-term healthy pregnancy

  • Artikel/kapitelEngelska2019

Förlag, utgivningsår, omfång ...

  • 2019-06-18
  • Wiley,2019

Nummerbeteckningar

  • LIBRIS-ID:oai:gup.ub.gu.se/283712
  • https://gup.ub.gu.se/publication/283712URI
  • https://doi.org/10.1111/aji.13154DOI
  • http://kipublications.ki.se/Default.aspx?queryparsed=id:141651299URI

Kompletterande språkuppgifter

  • Språk:engelska

Ingår i deldatabas

Klassifikation

  • Ämneskategori:ref swepub-contenttype
  • Ämneskategori:art swepub-publicationtype

Anmärkningar

  • Problem Circulating B-cell numbers are lower during pregnancy compared with non-pregnant women, but the underlying reasons for this are unknown. Pregnancy-related hormones could influence B-cell lymphopoiesis in the bone marrow, but B cells may also be recruited to the placenta. To investigate the latter, we examined whether the proportions of total B cells and B cells at different maturational stages in placental intervillous blood (IVB) differ compared with peripheral blood (PB). Method of study From 23 paired samples of PB and IVB following full-term healthy pregnancies, total B cells and immature/transitional, mature/naive, and memory B cells were identified by flow cytometry. Chemokine levels in blood were analyzed using a Luminex assay. Placental explant-derived supernatant was assayed for B-cell chemotactic activity. Results The proportions of total B cells and mature/naive B cells were significantly higher in IVB relative to PB, while the fractions of immature/transitional cells and memory B cells were higher in PB. Multivariate factor analysis demonstrated that a specific chemokine profile in IVB, including CCL20, positively associated with higher proportions of mature/naive B cells in the intervillous space. All B cells expressed CCR6, the corresponding receptor for CCL20, but the intensity of CCR6 expression was significantly higher in mature/naive B cells relative to immature/transitional B cells. Migration assays showed that placental explant-derived supernatants attract B cells. Conclusion These results indicate that B cells, and mature/naive B cells in particular, are retained in the intervillous blood in response to certain chemokines produced by the placenta during late healthy pregnancy.

Ämnesord och genrebeteckningar

Biuppslag (personer, institutioner, konferenser, titlar ...)

  • Lundell, Anna-Carin,1976Gothenburg University,Göteborgs universitet,Institutionen för medicin, avdelningen för reumatologi och inflammationsforskning,Institute of Medicine, Department of Rheumatology and Inflammation Research(Swepub:gu)xaanni (författare)
  • Gorchs, L.Karolinska Institutet (författare)
  • Gidlof, S.Karolinska Institutet (författare)
  • Tiblad, E.Karolinska Institutet (författare)
  • Kaipe, H.Karolinska Institutet (författare)
  • Karolinska InstitutetInstitutionen för medicin, avdelningen för reumatologi och inflammationsforskning (creator_code:org_t)

Sammanhörande titlar

  • Ingår i:American Journal of Reproductive Immunology: Wiley82:31046-74081600-0897

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