Lipid Anti-Lipid Antibody Responses Correlate with Disease Activity in Systemic Lupus Erythematosus

Jovanović, Vojislav; Abdul Aziz, Nurhuda; Lim, Yan Ting; Ng Ai Poh, Amanda; Jin Hui Chan, Sherlynn; Ho Xin Pei, Eliza; Lew, Fei Chuin; Shui, Guanghou; Jenner, Andrew M.; Bowen, Li; McKinney, Eoin F.; Lyons, Paul A.; Kemeny, Michael D.; Smith, Kenneth G. C.; Wenk, Markus R.; MacAry, Paul A.
February 2013
PLoS ONE;Feb2013, Vol. 8 Issue 2, p1
Academic Journal
Systemic Lupus Erythematosus (SLE) is a chronic autoimmune disorder characterized by broad clinical manifestations including cardiovascular and renal complications with periodic disease flares and significant morbidity and mortality. One of the main contributing factors to the pathology of SLE is the accumulation and impaired clearance of immune complexes of which the principle components are host auto-antigens and antibodies. The contribution of host lipids to the formation of these autoimmune complexes remains poorly defined. The aim of the present study was to identify and analyze candidate lipid autoantigens and their corresponding anti–lipid antibody responses in a well-defined SLE patient cohort using a combination of immunological and biophysical techniques. Disease monitoring in the SLE cohort was undertaken with serial British Isles Lupus Assessment Group (BILAG) scoring. Correlations between specific lipid/anti-lipid responses were investigated as disease activity developed from active flares to quiescent during a follow up period. We report a significant negative correlation between anti-lipid antibodies for 24S-hydroxycholesterol, cardiolipin and phosphatidylserine with SLE disease activity. Taken together, these data suggest that lipid autoantigens represent a new family of biomarkers that can be employed to monitor disease activity plus the efficacy of therapeutic intervention in SLE.


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