ABSTRACT
To compare new SLE activity inflammatory markers with traditional ones. In addition, to correlate those with disease activity index of SLE. Forty-three patients fulfilling the American College of Rheumatology criteria for diagnosis of SLE and 20 apparently healthy controls were subjects for study. Neopterin, soluble intercellular adhesion molecule [sICAM-1] and soluble vascular cell adhesion molecule [sVCAM-1] were measured as well as anti-dsDNA antibodies, C3, C4 and CRP. The British Isles Lupus Assessment Group [BILAG] disease activity index was used to measure disease activity. Twenty-four [55.8%] patients had active SLE [total BILAG score > 5], involving more than one system in nine [37.5%]. Activity was more in musculoskeletal, mucocutaneous, and hematological systems. All markers showed significant differences between SLE patients and controls. Neopterin, sVCAM and CRP were highest when compared to controls [p>0.001] as well as to inactive subgroup. The level of sICAM-1 in active was insignificantly higher than inactive group. Significant correlations were found between total BILAG score and CRP, neopterin, sVCAM. No positive correlation was found between any marker and disease activity of different BILAG organ systems. All tests were done for 22 patients on 3 occasions over 6 months. Highest levels of sVCAM-1 were in active subgroup with flares during the first measurement. Significant decrease between first and third measurement was observed within all subgroups. Neopterin and sVCAM-1 appear to be clinically useful for isolated and serial concentrations assessments of SLE disease activity scored using the BIIAG index. Anti-dsDNA and sVCAM-1 are good markers to predict remission