Objective To analyze the clinical characteristics of drug- induced liver injury( DILI) accompanied by autoimmune phenomena and to provide evidence for clinical practice. Methods An analysis was performed on the clinical data of 51 patients who were admitted to Beijing You'an Hospital from 2011 to 2013 and diagnosed with DILI. The participants were divided into anti- nuclear antibody( ANA)-positive group and ANA- negative group and,according to the simple scoring system for autoimmune hepatitis( AIH),divided into low-score( sore: 1- 4) group and high- score( score≥5) group,respectively. Comparison was made for laboratory parameters [alanine aminotransferase( ALT),aspartate aminotransferase( AST),total bilirubin( TBil),albumin( Alb),alkaline phosphatase( ALP),gamma-glutamyl transpeptidase( GGT),prothrombin time( PT),immunoglobulin M( Ig M),immunoglobulin A( Ig A),immunoglobulin G( Ig G) ],length of hospital stay,and recurrence. Comparison of normally distributed continuous data between groups was performed by t test,comparison of non- normally distributed continuous data between groups was made by rank- sum test,and comparison of categorical data between groups was conducted by chi- square test. Results Among the 51 patients,34 cases were positive for ANA,and 17 cases were negative for ANA; 17 cases were in the high- score group,and 34 cases were in the low- score group. There were no significant differences in ALT,TBil,Alb,ALP,GGT,PT,and Ig M between the two groups for both grouping criteria( all P > 0. 05). AST and Ig G differed significantly between the two groups for both grouping criteria( all P < 0. 05). The Ig G level and recurrence rate in the high- score group( 3. 87 ± 1. 73 g / L and 10 /17) were significantly higher than those in the low- score group( 2. 75 ± 1. 38 g / L and 8 /34)( both P < 0. 05). Conclusion The clinical manifestations are similar between patients with DILI alone and those with DILI accompanied by autoimmune phenomena. The simple scoring system for AIH is worthy of clinical application in DILI accompanied by autoimmune phenomena.
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