Publication Date
2020
Journal Title
Lupus Sci Med
Abstract
OBJECTIVES: To evaluate the association between lupus severity and cell-bound complement activation products (CB-CAPs) or low complement proteins C3 and C4.
METHODS: All subjects (n=495) fulfilled the American College of Rheumatology (ACR) classification criteria for SLE. Abnormal CB-CAPs (erythrocyte-bound C4d or B-lymphocyte-bound C4d levels >99th percentile of healthy) and complement proteins C3 and C4 were determined using flow cytometry and turbidimetry, respectively. Lupus severity was estimated using the Lupus Severity Index (LSI). Statistical analysis consisted of multivariable linear regression and groups comparisons.
RESULTS: Abnormal CB-CAPs were more prevalent than low complement values irrespective of LSI levels (62% vs 38%, respectively, p
CONCLUSION: Abnormalities in complement activation as measured by CB-CAPs are associated with increased LSI.
Volume Number
7
Issue Number
1
Pages
e000377
Document Type
Article
Status
Faculty
Facility
School of Medicine
Primary Department
Rheumatology
PMID
DOI
10.1136/lupus-2019-000377