贝伐单抗联合培美曲塞维持治疗对晚期非鳞状非小细胞肺癌患者循环microRNA-19以及白细胞介素-27表达的影响

目的：探讨贝伐单抗联合培美曲塞维持治疗晚期非鳞状非小细胞肺癌疗效及对循环microRNA（ miR）-19和白细胞介素（ interleukin，IL）-27表达水平的影响。方法选择2013年3月至2014年3月入住该院的经一线含铂类方案化疗获得控制的晚期非鳞状非小细胞肺癌患者45例，遵循知情同意原则分为培美曲塞组（25例）和贝伐单抗联合培美曲塞组（20例）；分别观察1年内两组疗效以及患者外周血miR-19、IL-27的表达。结果培美曲塞联合贝伐单抗组和培美曲塞组的疾病控制率分别为80％和48％，总有效率分别为45％和24％，两组间疾病控制率和总有效率比较均存在统计学差异（P＜0．05）；培美曲塞联合贝伐单抗组外周血miR-19表达约是培美曲塞组的0．57倍，两组间相比存在统计学差异（P＜0．05）。与培美曲塞组相比，培美曲塞联合贝伐单抗组外周血IL-27表达升高，两组间相比存在统计学差异（P＜0．05）。结论贝伐单抗联合培美曲赛维持治疗有助于改善晚期非鳞状非小细胞肺癌的治疗效果，降低外周血miR-19、升高IL-27的表达。

Effect of maintenance therapy with bevacizumab-pemetrexed for advanced non-squamous non-small cell lung cancer and on the levels of circulating miR-19 and interleukin-27 expression

Objective To investigate the effect of maintenance therapy with bevacizumab-pemetrexed for advanced non-squamous non-small cell lung cancer and on the levels of circulating microRNA(miR)-19 and interleukin (IL)-27 expression.Methods 45 patients with advanced no-squamous non-small cell lung cancer and gotten controlled after first-line containing cisplatin chemotherapy who enrolled into our hospital were randomized into pemetrexed group (n=25) and bevacizumab + pemetrexed group (n=20) accroding to the principle of informed consent. The curative effect of the two groups within 1 year and the expression of circulating miR-19 and IL-27 expression were observed.Results The disease control rate was 80% in bevacizumab + pemetrexed group and was 48% in pemetrexed group,the overall response rate was 45% in bevacizumab + pemetrexed group and was 24% in pemetrexed group. There have significant difference between two groups in the disease control rate and the overall response rate (P<0.05). The levels of circulating miR-19 in bevacizumab + pemetrexed group was 0.57 fold the pemetrexed group. There has significant difference between two groups in the levels of circulating miR-19 (P<0.05). Compared with the pemetrexed group,the levels of circulating IL-27 were increased in bevacizumab + pemetrexed group (P<0.05).Conclusion Maintenance therapy with bevacizumab+pemetrexed for advanced non-squamous non-small cell lung cancer could improve the clinical therapy effect,reduce the levels of circulating miR-19 expression and increased circulating IL-27 expression .