Distribution of anti-F(ab′)2 antibodies and the 16/6 idiotype in systemic lupus erythematosus (SLE) probands and kindreds

Academic Article

Abstract

  • Levels of serum anti-F(ab′)2 antibodies and expression of the 16/6 anti-DNA idiotype were studied in 103 sera from first-degree relatives of 17 systemic lupus erythematosus (SLE) kindreds. Among healthy SLE relatives, 35.9% showed anti-F(ab′)2 elevations and 24%, Id 16/6 expression. Forty-three and two-tenths percent of healthy SLE relatives with elevated anti-F(ab′)2 also showed expression of 16/6; when Id 16/6 was positive, 16 of 25 relatives (64%) showed parallel elevations of anti-F(ab′)2. However, within individual families, distribution patterns of elevated anti-F(ab′)2 and Id 16/6 often did not coincide. Affinity-isolated anti-F(ab′)2 from four members of a single SLE kindred showed relative enrichment for Id 16/6 in only two of the four individuals studied. Moreover, none of the isolated anti-F(ab′)2 antibodies within this kindred or another kindred showing 16/6 Id expression reacted directly with 16/6 Id. Our studies suggest that whereas both anti-F(ab′)2 and Id 16/6 are increased within SLE kindreds, expression of the two does not always coincide. Furthermore, anti-F(ab′)2 antibodies do not show direct reactivity with Id 16/6. A number of anti-DNA idiotypic markers may play a role in idiotypic networks among such SLE kindreds. © 1989 Plenum Publishing Corporation.
  • Published In

    Digital Object Identifier (doi)

    Pubmed Id

  • 19965462
  • Author List

  • Silvestris F; Searles RA; Williams RC; Rodriguez MA; Schwartz RS
  • Start Page

  • 462
  • End Page

  • 468
  • Volume

  • 9
  • Issue

  • 6