Ändra sökning
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Plasmodium falciparum exposure in utero, maternal age and parity influence the innate activation of foetal antigen presenting cells
Stockholms universitet, Naturvetenskapliga fakulteten, Wenner-Grens institut.
Visa övriga samt affilieringar
2009 (Engelska)Ingår i: Malaria Journal, ISSN 1475-2875, E-ISSN 1475-2875, Vol. 8, s. 251-Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Background: Malaria in pregnancy is associated with immunological abnormalities in the newborns, such as hampered T-helper 1 responses and increased T-regulatory responses, while the effect of maternal Plasmodium falciparum infection on foetal innate immunity is still controversial. Materials and methods: The immunophenotype and cytokine release by dendritic cells (DC) and monocytes were evaluated in cord blood from 59 Beninese women with or without malaria infection by using flow cytometry. Results: Accumulation of malaria pigment in placenta was associated with a partial maturation of cord blood myeloid and plasmacytoid DC, as reflected by an up-regulated expression of the major histocompatibility complex class II molecules, but not CD86 molecules. Cells of newborns of mothers with malaria pigment in their placenta also exhibited significantly increased cytokine responses upon TLR9 stimulation. In addition, maternal age and parity influenced the absolute numbers and activation status of cord blood antigen-presenting cells. Lastly, maternal age, but not parity, influenced TLR3, 4 and 9 responses in cord blood cells. Discussion: Our findings support the view that placental parasitization, as indicated by the presence of malaria pigment in placental leukocytes, is significantly associated with partial maturation of different DC subsets and also to slightly increased responses to TLR9 ligand in cord blood. Additionally, other factors, such as maternal age and parity should be taken into consideration when analysing foetal/neonatal innate immune responses. Conclusion: These data advocate a possible mechanism by which PAM may modulate foetal/neonatal innate immunity.

Ort, förlag, år, upplaga, sidor
2009. Vol. 8, s. 251-
Nyckelord [en]
plasmacytoid dendritic cells, cord blood, immune-responses, placental malaria, ifn-gamma, t-cells, infection, tolerance, pregnancy, subsets
Identifikatorer
URN: urn:nbn:se:su:diva-59409DOI: 10.1186/1475-2875-8-251ISI: 000272255200001OAI: oai:DiVA.org:su-59409DiVA, id: diva2:427421
Anmärkning
authorCount :10Tillgänglig från: 2011-06-28 Skapad: 2011-06-27 Senast uppdaterad: 2017-12-11Bibliografiskt granskad

Open Access i DiVA

Fulltext saknas i DiVA

Övriga länkar

Förlagets fulltext

Sök vidare i DiVA

Av författaren/redaktören
Troye-Blomberg, Marita
Av organisationen
Wenner-Grens institut
I samma tidskrift
Malaria Journal

Sök vidare utanför DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetricpoäng

doi
urn-nbn
Totalt: 98 träffar
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf