自身免疫性肝炎和原发性胆汁性肝硬化重叠综合征患者的临床特点

目的 了解自身免疫性肝炎(AIH)、原发性胆汁性肝硬化(PBC)重叠综合征的临床特点。方法 对129例自身免疫性肝病患者的临床资料进行回顾分析,按国际评分标准,诊断AIH/PBC重叠综合征,并将其生物化学、自身抗体、肝穿刺结果与单纯的AIH、PBC患者病例资料比较。 结果 129例自身免疫性肝病患者中35例为AIH/PBC重叠综合征患者,占27.1％,以女性患者为主,男女比例为1:10,平均年龄(50.79±11.27)岁,其实验室检查具有AIH患者的特点,如:氨基转移酶、γ 球蛋白、免疫球蛋白G的明显升高,同时也具有PBC的特点,如:碱性磷酸酶、免疫球蛋白M的显著增高,自身抗体检测可见抗核抗体(74.3％)、抗线粒体抗体(68.6％)、M2抗体(45.7％)阳性;肝穿刺结果有界面坏死、浆细胞浸润及胆管不同程度的损害。 结论 AIH/PBC重叠综合征为独立于AIH、PBC存在的疾病,有必要对此及早诊断,寻找有效的治疗方法。

Clinical features of 35 cases of autoimmune hepatitis-primary biliary cirrhosis overlap syndrome

OBJECTIVE: To realize the clinical features of autoimmune hepatitis-primary biliary cirrhosis (AIH+PBC) overlap syndrome. METHODS: We analyzed and compared the biochemistry, autoimmune antibodies, and liver biopsy results of 129 autoimmune hepatic disease cases retrospectively, using the international criteria to see which could be diagnosed as AIH/PBC overlap syndrome. RESULTS: Our 35 AIH+PBC overlap syndrome patients were mainly women, with a sex ratio of 1 female: 10 male, and a median age of 50.79+/-11.27 (20 to 70 years old). They had AIH characteristics such as flare of ALT, AST and elevated immunoglobulin G (IgG), gamma-immunoglobulin. There were also antinuclear antibodies (74.3%); moderate or severe periportal or periseptal lymphocytic infiltration, piecemeal necrosis, and florid bile duct lesions, high serum levels of ALP, presence of mitochondrial antibodies (68.6%) and M2 antibodies (45.7%), and features of PBC. CONCLUSIONS: AIH+PBC overlap syndrome is not rare. It should be diagnosed in time and to find effective treatments for it.