Lack of gender-specific antibody recognition of products from domains of a var gene implicated in pregnancy-associated Plasmodium falciparum malaria

Infect Immun. 2003 Jul;71(7):4193-6. doi: 10.1128/IAI.71.7.4193-4196.2003.

Abstract

Gender-specific and parity-dependent acquired antibody recognition is characteristic of variant surface antigens (VSA) expressed by chondroitin sulfate A (CSA)-adherent Plasmodium falciparum involved in pregnancy-associated malaria (PAM). However, antibody recognition of recombinant products of a specific VSA gene (2O2var1) implicated in PAM and transcribed by a CSA-adhering parasite line did not have these characteristics. Furthermore, we could not demonstrate preferential transcription of 2O2var1 in the CSA-adhering line versus the unselected, parental isolate. Our data call for circumspection regarding the molecular identity of the parasite ligand mediating adhesion to CSA in PAM.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Antibodies, Protozoan / blood*
  • Chondroitin Sulfates / physiology
  • Female
  • Humans
  • Immunoglobulin G / blood
  • Malaria, Falciparum / immunology*
  • Male
  • Parity
  • Plasmodium falciparum / genetics
  • Plasmodium falciparum / immunology*
  • Pregnancy
  • Pregnancy Complications, Parasitic / immunology*
  • Protozoan Proteins / genetics*
  • Sex Factors

Substances

  • Antibodies, Protozoan
  • Immunoglobulin G
  • Protozoan Proteins
  • erythrocyte membrane protein 1, Plasmodium falciparum
  • Chondroitin Sulfates