血浆炎性趋化因子CCL-2／MCP-1水平与造血干细胞移植后aGVHD及特发性肺炎综合症相关性研究

本研究探讨CCL-2／MCP-1血浆水平在异基因造血干细胞移植前后的变化，以了解该趋化因子在急性移植物抗宿主病（aGVHD）和特发性肺炎综合症（IPS）发生、发展中的作用。选择22例异基因造血干细胞移植病例为研究对象，其中无／度aGVHD14例，Ⅱ-Ⅳ度aGVHD8例，在22例中8例临床诊断为IPS。采用固相双抗体夹心酶联免疫吸附方法每周测定血浆CCL-2／MCP-1水平并分析造血干细胞移植前、aGVHD高峰时、aGVHD控制后或进展时（Ⅲ-Ⅳ度者）CCL-2／MCP-1水平与aGVHD之间的关系，同时分析移植过程中CCL-2／MCP-1动态变化和IPS的关系。结果表明，Ⅱ-Ⅳ度aGVHD高峰时血浆CCL-2／MCP-1水平较移植前明显升高（p〈0．05），aGVHD被控制时CCL-2／MCP-1水平下降至移植前水平（p〈0．05），病情进展时CCL-2／MCP-1持续升高（P〈0．05）。发生aGVHD和／或IPS的患者CCL-2／MCP-1水平明显高于既无（或轻度）aGVHD又无IPS的患者（p=0．001）。临床诊断为IPS的患者。在移植过程中CCL-2／MCP-1水平明显升高（P=0．006）。结论：CCL-2／MCP-1血浆水平与aGVHD的发生有一定的相关性，但与IPS的发生明显相关，表明CCL-2／MCP-1在aGVHD及IPS发生中发挥作用。

Correlation of Chemokine CCL-2/MCP-1 Level in the Plasma with aGVHD and Idiophathic Pneumonia Syndrome after Allogeneic Hematopoietic Stem Cell Transplantation

The aim of this study was to investigate the relationship between the plasma levels of chemokine CCL-2/MCP-1 and acute graft-versus-host disease (aGVHD) and/or idiopathic pneumonia syndrome (IPS) after allogeneic hematopoietic stem cell transplantation (allo-HSCT). ELISA assays were used to detect the plasma level of CCL-2/MCP-1 of 22 patients who received allo-HSCT, including 14 patients without or with grade I, 8 patients with grade II - IV aGVHD, respectively. 8 out of 22 patients were also diagnosed with IPS clinically. The dynamic changes of the plasma levels of CCL-2/MCP-1 chemokine and its correlation with aGVHD and/or IPS were analysized retrospectively. The results showed that the plasma levels of CCL-2/MCP-1 in the patients with moderate and serious aGVHD (grade II - IV) significantly increased, as compared with that prior to allo-HSCT (p < 0.05). The plasma levels of CCL-2/MCP-1 in the patients with aGVHD and/or IPS were higher significantly than those without any of these complications (p = 0.001). The retrospective analysis indicated that the plasma levels of CCL-2/MCP-1 in the patients with IPS significantly increased (p = 0.006). It is concluded that plasma level of CCL-2/MCP-1 correlates with aGVHD and/or IPS, and plays a role in the pathogenesis of these complications.