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  • Title: Anti-α-enolase antibody combined with β2 microglobulin evaluated the incidence of nephritis in systemic lupus erythematosus patients.
    Author: Huang Y, Chen L, Chen K, Huang F, Feng Y, Xu Z, Wang W.
    Journal: Lupus; 2019 Mar; 28(3):365-370. PubMed ID: 30813870.
    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.
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