抗可溶性肝抗原/肝胰抗原抗体阳性的肝病患者临床与实验室特征

目的研究肝功能异常伴抗可溶性肝抗原／肝咦抗原（SLA／LP）抗体阳性患者临床与实验室特点。方法收集肝功能异常患者血清5500例，分别完成相关自身抗体的检测。结果8例（0．15％）患者检测出sLA／LP抗体阳性，女性6例，以中老年女性为主，男性2例，年龄分别为27岁和33岁，8例中6例无甲、乙、丙、丁、戊型等病毒性肝炎现症感染证据，2例分别伴乙、丙型肝炎病毒标志物，无现症感染证据。8例中7例已发展至肝硬化，除sLA／LP抗体阳性外，抗核抗体均为阳性，部分患者伴抗平滑肌抗体，抗线粒体抗体，抗线粒体抗体亚型-丙酮酸脱氢酶复合物阳性。结论sLA／LP抗体在所检测患者中阳性率较低，以女性患者为主，多数临床与实验室特点符合自身免疫性肝炎特征，女性患者慢性肝病原因未名者应检测此抗体。

Clinical and laboratory characteristics of anti-soluble liver antigen/ liver-pancreas (SLA/LP) autoantibody positive liver disease patients

OBJECTIVE: To analyze the clinical and laboratory features of anti-soluble liver antigen/liver-pancreas (SLA/LP) autoantibody positive patients with abnormal liver functions. METHODS: From July 1999 to August 2004, 4928 serum samples from patients with abnormal liver functions (ALT >40 U/L) were collected. A series of autoantibody examinations were carried out. Clinical manifestations and laboratory findings of 8 patients with anti-SLA/LP autoantibody positive were reviewed. RESULTS: Among the 5500 serum samples, 8 cases (6 females and 2 males) with positive anti-SLA/LP autoantibodies were found with complete clinical information. The age of the patients was (27-76) years old. The case histories were from 2 years to 10 years. Of the 8 patients, 6 cases had liver cirrhosis and HBsAg-negative and anti-HCV-negative, active, 1 case had liver cirrhosis with HBsAg-positive, but HBVDNA negative; 1 case had liver cirrhosis and anti-HCV positive, but HCV RNA negative. The 8 cases were all ANA positive with titers of 31:320. Four cases were AMA positive and 2 among these 4 cases were M2 positive. The most frequent symptoms were fatigue, anorexia, nausea, jaundice, abdominal distention and edema of lower limbs. All patients had high hypergammaglobulinemia. CONCLUSION: Anti-SLA/LP autoantibody was at a low detection rate in the study with females in preponderance, Clinical and laboratory characteristics of the 8 cases were consistent with those of the autoimmune hepatitis (AIH). Testing for anti-SLA autoantibodies helps in the diagnosis of AIH in many patients who may otherwise be misdiagnosed.