肝硬化患者血小板计数与血小板生成素及脾脏指数间的关系

目的 研究肝硬化患者外周血血小板计数、血清血小板生成素(TPO)水平及脾脏指数间的关系,以明确肝硬化患者血小板减少的原因。方法 血清TPO水平采用酶联吸附法检测,脾脏指数由同一医生在相同的条件下用彩色多普勒超声仪测量。结果 健康对照组与肝硬化组外周血小板计数分别为(169.63±26.60)×10~(12)/L、(109.20±53.39)×10~(12)/L,t=3.630,P<0.05;血清TPO水平分别为(412.63±132.80)pg/ml、(436.42±258.97)pg/ml,t=0.272,P>0.05。随着肝脏损伤的加重,血清TPO水平依次下降,Child-Pugh A级、B级、C级分别为(526.13±317.44)pg/ml、(445.22±214.90)pg/ml、(311.45±182.66)pg/ml,A级与C级之间差异有显著性,而其它指标(血小板计数、脾脏指数、门静脉宽度)A级与B级、C级之间差异有显著性。血小板正常组(35例)与血小板减少组(36例)血清TPO水平分别为(529.43±282.64)pg/ml、(351.27±228.25)pg/ml,t=-2.926,P<0.01;而两组间脾脏指数分别为(19.65±12.00)cm~2、(36.35±12.68)cm~2,t=1.891,P>0.05。结论 血清TPO水平降低可能是肝硬化患者血小板减少的原因之一,脾脏在血小板减少中的作用有待进一步研究。

The relationship among the counts of platelet,thrombopoietin and spleen index in patients with liver cirrhosis

OBJECTIVE: To determine the reason of thrombocytopenia in patients with liver cirrhosis, we studied the relationship among platelet counts, serum thrombopoietin (TPO) level and spleen index. METHODS: Serum TPO, platelet counts and spleen index were measured in 71 cirrhotic patients. TPO was measured with ELISA method, spleen index were measured on ultrasonography by the same doctor. RESULTS: Platelet counts in patients with cirrhosis were lower than that of healthy group [(109.20+/-53.39) vs (169.63+/-26.60) x 10(12)/L, P<0.05]. Serum thrombopoietin level in patients with cirrhosis was similar to that of healthy group [(436.42+/-258.97) vs (412.63+/-132.80) pg/ml, P>0.05]. However, serum thrombopoietin level decreased as liver disease aggravated, [(526.13+/-317.44) pg/ml in Child-Pugh grade A, (445.22+/-214.90) pg/ml in grade B and (311.45+/-182.66) pg/ml in grade C, grade A vs. Grade C, P<0.05]. However, decline in platelet counts was accompanied with incline in spleen index coordinately. 35 of 71 cirrhotic patients had normal platelet counts whereas 36 of them had thrombocytopenia. Thrombopoietin levels were higher in non-thrombocytopenia group than in thrombocytopenia group [(529.43+/-282.64) vs. (351.27+/-228.25)pg/ml, P<0.01]; but spleen index of two groups showed no difference [(29.65+/-12.00) vs. (36.35+/-12.68) cm2, P>0.05]. Correlation was found between thrombopoietin level and platelet counts (r=0.252, P=0.025); no correlation was found between spleen index and platelet counts (r=-0.238, P=0.062). CONCLUSION: The decline serum TPO levels might play an important role for thrombocytopenia in patients with liver cirrhosis.