慢性再生障碍性贫血患者治疗前后细胞粘附分子CD11a、CD49d表达的变化

Change of Expression of Cell Adhesion Molecules CD11a and CD49d in Patients with Chronic Aplastic Anemia before and after Therapy

为探讨细胞粘附分子 (CAMs)CD11a、CD4 9d在慢性再生障碍性贫血 (CAA)患者的表达及与临床的关系 ,采用碱性磷酸酶抗碱性磷酸酶法 (APAAP法 )测定 2 0例慢性再生障碍性贫血患者在SSL/C方案治疗前后骨髓及外周血单个核细胞 (MNC)粘附分子CD11a和CD4 9d表达的阳性细胞百分率。结果发现 ,慢性再生障碍性贫血患者治疗后骨髓及外周血MNC的CD11a及骨髓MNC的CD4 9d表达的阳性细胞百分率较治疗前升高 ,外周血MNC的CD4 9d表达治疗前后无显著差异。结论 :细胞粘附分子表达降低在慢性再生障碍性贫血的发病中发挥了一定作用 ,随着病情的缓解粘附分子表达增强 ,纠正再生障碍性贫血患者粘附分子的异常表达 ,可以改善其骨髓造血功能。

To explore the cell adhesion molecules (CAMs) CD11a and CD49d in patients with chronic aplastic anemia (CAA) and its clinical implications, the expression of CD11a and CD49d in mononuclear cell (MNC) of bone marrow (BM) and peripheral blood (PB) were measured using APAAP techniques in 20 patients with CAA before and after SSL/C therapy. The results showed that the expression of CD11a and CD49d in MNC of BM and CD11a in MNC of PB increased significantly (P<0.05) after SSL/C therapy, and there was no significant change of CD49d in MNC of PB in both groups. In conclusion, the decrease of CAMs of CD11a and CD49d participated in the pathogenesis of CAA. The expression of CAMs increases with effective treatment, so the restoration or improvement of altered CAMs of CAA might be beneficial to the proliferation and differentiation of hematopoietic stem cell, and improvement of hematopoiesis in CAA.