תרומתי לרפואה

אידיוטיפים של נוגדנים נגד DNA

 

להלן תקצירי מאמרים בנושא אידיוטיפים לנוגדנים של DNA  (לרשימת המאמרים המלאה)

 

1. Immunol. 1987 Dec 1;139(11):3730-3.
Preferential expression of the systemic lupus erythematosus-associated idiotype 8.12 in sera containing monoclonal immunoglobulins.
Livneh A, Preud'Homme JL, Solomon A, Diamond B.

 

Abstract
The 8.12 idiotype defines a population of anti-DNA antibodies present in the serum of patients with systemic lupus erythematosus. As part of our studies to elucidate the genetic origin and structural features of anti-DNA antibodies, we examined monoclonal immunoglobulin (Ig)-containing sera from 706 patients for expression of the 8.12 idiotype. We found 41 such sera to have significant 8.12 reactivity (greater than 4 SD above the mean of normal controls) and demonstrated that in 24 of these sera (8 IgM, 14 IgG, and 2 IgA) this reactivity could be localized to the monoclonal protein. In addition, 12 of the 8.12-reactive monoclonal Ig (11 IgG and 1 IgA) bind dsDNA. In the other 17 sera, the 8.12 reactivity could be attributed to polyclonal antibody. These findings provide further evidence that the serum monoclonal Ig frequently express the antigenic and idiotypic reactivities of autoantibodies. Furthermore, these data support the contention that anti-DNA specificity may result from somatic diversification of germ-line Ig gene sequences.

 

2. J Immunol. 1987 Jan 1;138(1):123-7.
A monoclonal antibody to a cross-reactive idiotype on cationic human anti-DNA antibodies expressing lambda light chains: a new reagent to identify a potentially differential pathogenic subset.
Livneh A, Halpern A, Perkins D, Lazo A, Halpern R, Diamond B.

 

Abstract    
Anti-double-stranded DNA antibodies are commonly found in the serum of patients with systemic lupus erythematosus (SLE). They are a heterogeneous group of antibodies thought to differ in pathogenicity. The degree of heterogeneity and the structural correlates of pathogenicity, however, remain poorly defined. To address these questions we have been generating anti-idiotypic antibodies to the anti-DNA antibodies found in the serum of SLE patients. In this paper we report the generation and characterization of a new murine monoclonal anti-idiotype, 8.12, that recognizes a subset of anti-DNA antibodies that is present in serum of approximately 50% of patients with SLE. The 8.12 anti-idiotype recognizes uniquely cationic anti-DNA antibodies, all of which express lambda light chains. In murine models of SLE, it has been suggested that cationic anti-DNA antibodies are preferentially deposited in the kidney. It may be, therefore, that 8.12 recognizes a subset of anti-DNA antibodies of particular pathogenic significance.
 

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