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[Quantitative characteristic of circulating immune complexes in patients with lupus erythematosus and central nervous
Insights
Small immune complexes (IC) in high concentrations may indicate central nervous system (CNS) involvement in systemic lupus erythematosus (SLE). Higher concentrations suggest localized brain impairment in SLE patients.
Area of Science:
- Immunology
- Neurology
- Medical Diagnostics
Context:
- Systemic lupus erythematosus (SLE) can affect the central nervous system (CNS).
- Immune complexes (IC) are implicated in autoimmune diseases like SLE.
- Understanding IC characteristics may aid in diagnosing CNS involvement.
Purpose:
- To investigate the relationship between immune complex (IC) characteristics and central nervous system (CNS) impairment in patients with systemic lupus erythematosus (SLE).
- To identify potential biomarkers for CNS involvement in SLE.
Summary:
- Rapid nephelometry was used to analyze IC molecular weight and concentration in 19 SLE patients with CNS impairment.
- Small-size IC were prevalent and at higher concentrations compared to controls.
- Higher concentrations of larger IC were observed in patients with cerebral cysts and dilated subarachnoid spaces compared to those with ventricular dilation.
Impact:
- The presence of small-size IC at high concentrations could serve as a marker for CNS involvement in SLE.
- Elevated IC concentrations may indicate localized brain impairment in SLE patients.
- This research may improve diagnostic strategies for neurological complications in SLE.
Abstract:
Molecular weight and concentration characteristics of immune complexes (IC) from 19 sera of patients with systemic lupus erythematosus (SLE) and CNS impairment have been obtained by the rapid nephelometry assay. Basing on cranial CT findings, the examinees were divided into 2 groups. Group I included patients with cerebral cysts and local dilation of subarachonid spaces, group II those with the above dilatation or that of ventricles of the brain. Small-size IC were registered in 14 sera, their relative molecular mass being under the values derived for donors and SLE patients without CNS affections whereas their level exceeded such in donor sera. Larger IC relative concentrations were seen in group I patients than in group II ones (34 +/- 13 and 18.7 +/- 12, respectively). Five patients failed to demonstrate IC. The presence of small-size IC in high concentrations may be considered a marker of CNS involvement in SLE, the highest concentrations suggesting local impairment of the brain.
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