29例慢性淋巴细胞白血病Ki-67和Bcl-2的表达及临床意义

为了观察Ki-67抗原和抗凋亡蛋白Bcl-2在慢性淋巴细胞白血病（CLL）中的表达,探讨其与CLL疾病分期和预后的关系,用链霉菌抗生物素蛋白-碱性磷酸酶（SAP）免疫组织化学染色的方法,对29例CLL患者的骨髓或外周血的增殖相关抗原Ki-67和抗凋亡蛋白Bcl-2进行检测.结果显示：Ki-67抗原在晚期CLL中的表达较早期CLL中的表达高,且差异有显著性;Bcl-2蛋白在晚期CLL中的表达也高于早期CLL中的表达,但差异无显著性;高Ki-67表达组的活存期比低表达组的活存期短,且有显著性差异,而Bcl-2的表达在两组之间无差异.结论：对CLL患者进行增殖相关抗原Ki-67和抗凋亡蛋白Bcl-2的检测,其结果能反映患者肿瘤细胞的增殖活性和凋亡受抑的情况;Ki-67与CLL疾病分期和预后密切相关.

Expressions of Ki-67 and Bcl-2 in 29 Cases of Chronic Lymphocytic Leukemia and Their Clinical Significance

To investigate the expressions of proliferative antigen Ki-67 and apoptosis-antagonizing protein Bcl-2 in patients with chronic lymphocytic leukemia (CLL) and their clinical significance, immunohistochemistry method was used for detection of Ki-67 and Bcl-2 in bone marrow or peripheral blood of 29 patients with CLL. The results showed that the level of Ki-67 expression in advanced stage of CLL was higher than that in early stage of CLL and there was significant difference between these stages of CLL, but there was no significant difference between expression levels of Bcl-2 in two stages. The survival time in the group with Ki-67 expression < or = 8% was longer than that in the group of Ki-67 > 8%, and there was no significant difference of survival time between high and low groups in terms of Bcl-2 expression. It is concluded that detection of Ki-67 antigen and Bcl-2 protein for CLL patients can reflect the status of proliferation activity and apoptosis suppression of leukemia cells in patients; the level of Ki-67 expression closely correlate with the Binet stage and prognosis of CLL.