Y Huang1, L Chen2, K Chen1, F Huang1, Y Feng1, Z Xu1, W Wang1. 1. 1 Department of Laboratory Medicine, Sun Yat-sen University affiliated Zhongshan Hospital, Zhongshan, China. 2. 2 Department of Pharmacy, Shenzhen Children's Hospital, Shenzhen, China.
Abstract
OBJECTIVE: Anti-α-enolase antibody (Ab) combined with β2 microglobulin (β2-MG) were investigated to predict the incidence of nephritis in systemic lupus erythematosus (SLE) patients. METHODS: Levels of serum anti-α-enolase Ab and urinary β2-MG were detected in 115 SLE patients, 29 SLE patients with nephritis and 70 healthy controls by ELISA and immunoturbidimetry, respectively. Furthermore, the correlation between anti-α-enolase Ab combined with β2-MG and the incidence of nephritis in SLE patients was evaluated by correlation analysis. RESULTS: The optical density value of serum anti-α-enolase Ab in SLE patients with nephritis (0.84) was greatly increased compared with SLE patients (0.76) or healthy controls (0.54). Moreover, the levels of urinary β2-MG in SLE patients with nephritis (6.75 mg/L) were increased compared with SLE patients (3.45 mg/L) or healthy controls (1.48 mg/L). There was a positive correlation between the level of anti-α-enolase Ab and β2-MG ( r = 0.754). Furthermore, anti-α-enolase Ab combined with β2-MG for evaluating the incidence of nephritis in SLE patients had the best assessment of the effectiveness (area under the receiver operating characteristic curve (AUC): 92.7%) compared with only anti-α-enolase Ab (AUC: 80.9%) or β2-MG (AUC: 84.5%). CONCLUSION: These data suggested that anti-α-enolase Ab may be a potential indicator for the prediction of nephritis in SLE patients.
OBJECTIVE: Anti-α-enolase antibody (Ab) combined with β2 microglobulin (β2-MG) were investigated to predict the incidence of nephritis in systemic lupus erythematosus (SLE) patients. METHODS: Levels of serum anti-α-enolase Ab and urinary β2-MG were detected in 115 SLEpatients, 29 SLEpatients with nephritis and 70 healthy controls by ELISA and immunoturbidimetry, respectively. Furthermore, the correlation between anti-α-enolase Ab combined with β2-MG and the incidence of nephritis in SLEpatients was evaluated by correlation analysis. RESULTS: The optical density value of serum anti-α-enolase Ab in SLEpatients with nephritis (0.84) was greatly increased compared with SLEpatients (0.76) or healthy controls (0.54). Moreover, the levels of urinary β2-MG in SLEpatients with nephritis (6.75 mg/L) were increased compared with SLEpatients (3.45 mg/L) or healthy controls (1.48 mg/L). There was a positive correlation between the level of anti-α-enolase Ab and β2-MG ( r = 0.754). Furthermore, anti-α-enolase Ab combined with β2-MG for evaluating the incidence of nephritis in SLEpatients had the best assessment of the effectiveness (area under the receiver operating characteristic curve (AUC): 92.7%) compared with only anti-α-enolase Ab (AUC: 80.9%) or β2-MG (AUC: 84.5%). CONCLUSION: These data suggested that anti-α-enolase Ab may be a potential indicator for the prediction of nephritis in SLEpatients.