慢性乙型肝炎患者肝组织中程序性死亡分子-1表达与中医辨证分型及肝脏病理的关系

目的：探讨慢性乙型肝炎(chronic hepatitis B, CHB)患者肝组织中程序性死亡分子-1(programmed death-1, PD-1)表达与中医辨证分型及肝脏病理的关系。方法将我院感染科收治的156例CHB患者。依据知情自愿原则且经伦理委员会批准，采用肝组织活检术明确CHB患者肝组织病理类型，并依据中医辨证分型标准将CHB患者分为瘀血阻络型、湿热中阻型、肝郁脾虚型、肝肾阴虚型以及脾肾阳虚型。采用免疫组化染色SP法检测其肝组织中PD-1的表达水平，探讨其与中医辨证分型及肝脏病理间的关系。结果 CHB患者肝组织中可见不同程度阳性细胞表达，随着肝脏炎症及纤维化程度的加重， PD-1阳性表达细胞的数量亦增多。CHB 轻度、中度、重度患者 PD-1(0.24±0.03)、(0.36±0.05)比(0.43±0.05)]表达水平比较，差异均有统计学意义(P＜0.05)。PD-1在不同中医证型CHB患者间表达水平各异，其中瘀血阻络型CHB患者PD-1的表达水平最高(0.35±0.04)，肝郁脾虚型最低(0.23±0.03)。结论 CHB患者肝组织中PD-1的表达水平与其病情、慢性化机制以及中医辨证分型有相关性，可通过监测CHB患者肝组织中PD-1的表达来指导临床治疗。

Relationship between PD-1 expression in liver tissues with TCM syndromes and liver pathology in patients with chronic hepatitis B

Objective To discuss the relationship between the expression of programmed death-1 (PD-1) in liver with traditional Chinese medicine (TCM) syndromes and pathological diagnosis in chronic hepatitis B.Methods 156 CHB patients treated in our hospital of infectious diseases department were recruited as an observation group. Based on the principle of informed voluntary and approved by the ethics committee, liver biopsy was adopted to make clear liver tissue pathology. According to TCM classification criteria, CHB patients were divided into five groups: a blood stasis group, a damp heat resistance group, a liver and spleen deficiency group, a liver and kidney yin deficiency group, and a spleen and kidney yang deficiency group. In the same period, 12 healthy persons were recruited as a control group. The PD-1 expression was detected with immunohistochemical SP method, and the correlation between expression of PD-1 in liver tissue and TCM syndrome type and liver pathology was analyzed.Results Different degrees of positive cell expression were found in the liver tissue. With the liver inflammation and fibrosis severity, the number of PD-1 positive cells also increased. The PD-1 expression levels varied with mild, moderate, and severe CHB patients (0.24 ± 0.03, 0.36 ± 0.05 vs. 0.43 ± 0.05) , which were statistically significant (P<0.05) . PD-1 expression levels also varied among different TCM type CHB patients, of which, PD-1 expression of blood stasis type was the highest (0.35 ± 0.04), while the liver and spleen deficiency type was the lowest (0.23 ± 0.03).Conclusion The expression levels of PD-1 has a certain correlation with the patients illness, chronic mechanism, and TCM syndromes. CHB patients can be treated by controlling the expression of PD-1.