Complement components in normal pregnancy

Acta Pathol Microbiol Immunol Scand C. 1987 Jun;95(3):97-9. doi: 10.1111/j.1699-0463.1987.tb00014.x.


Sixteen complement components were analysed at three different occasions during a normal pregnancy. Samples were also obtained at delivery and six weeks post partum. All factors but C1 IA and D increased during the pregnancy. Six weeks after the delivery, the levels of all components but C1s, C4 and C6 showed a beginning normalisation. In 15 per cent of the women, C1 IA was functionally inactive at delivery.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Complement System Proteins / physiology*
  • Female
  • Gestational Age
  • Humans
  • Postpartum Period
  • Pregnancy / immunology*


  • Complement System Proteins