Identification of RGS1 as a candidate biomarker for undifferentiated spondylarthritis by genome-wide expression profiling and real-time polymerase chain reaction
November 4, 2009 by admin
Identification of RGS1 as a candidate biomarker for undifferentiated spondylarthritis by genome-wide expression profiling and real-time polymerase chain reaction
To compare gene expression profiles between ankylosing spondylitis (AS) and undifferentiated spondylarthritis (uSpA) patients with inflammatory low back pain.Peripheral blood mononuclear cells (PBMCs) from patients with AS, patients with uSpA, and healthy subjects were screened using genome-wide microarrays, followed by validation by real-time polymerase chain reaction (PCR).Microarray profiling and real-time PCR assays showed only minor differences between AS patients and healthy subjects. In contrast, 20 genes were strikingly more highly expressed in uSpA patients. Regulator of G protein signaling 1 (RGS1) was identified as the most useful biomarker for distinguishing uSpA patients, and to a lesser extent AS patients, from control subjects (P = 2.3 × 10-7 and 6.7 × 10-3, respectively)….











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