韩军 胡宏燕
(安徽医科大学附属六安医院<六安市人民医院>呼吸内科 237005)
【摘要】 目的:探讨中性粒细胞计数/淋巴细胞比值(NLR)与晚期非小细胞肺癌(NSCLC)临床病理特征的关系,评价其对化疗的意义。方法:回顾性分析84例晚期NSCLC临床病理资料,以NLR均值为临界值,将患者分为低NLR组和高NLR组,分析NLR与NSCLC临床病理特征关系及 NLR化疗前后的变化。结果:NLR与肺癌病理分期、ECOG评分、血小板计数、血小板计数/淋巴细胞比值(PLR)有统计学差异(P<0.05),与性别、年龄、吸烟史、病理类型、血红蛋白(hgb)无统计学差异(P>0.05);NLR值化疗前4.11±2.94与化疗后3.04±2.55之间的差异有统计学意义(P<0.005)。结论: NSCLC患者病理分期越晚,NLR值越高; 化疗后NRL值的降低对化疗评价有参考意义。
【关键词】 中性粒细胞计数/淋巴细胞比值;非小细胞肺癌;化疗
【中图分类号】R730.2 【文献标识码】A 【文章编号】2095-1752(2015)23-0060-03
The relationship between neutrophil count/ lymphocyte ratio with advanced non-small cell lung cancer pathology and its significance in chemotherapy
Han Jun, Hu Hongyan. Lu'an Affiliated Hospital, Anhui Medical University( Lu'an people hospital) , Anhui Province. Lu'an 237005, China
【Abstarct】 Objectiv To explore the relationship between neutrophil count/lymphocyte ratio (NLR) with advanced non-small cell lung cancer (NSCLC) clinical and pathological features,and to evaluate the significance of chemotherapy.Methods Retrospective analysis of 84 patients with advanced NSCLC clinical data,the patients were classified into two groups:low and high NLR group by the mean NLR as critical value, and then the association between NLR and clinicopathological features of NSCLC was analyzed. Result NLR with lung cancer staging, ECOG score, platelet count, platelet count/lymphocyte ratio (PLR) were significantly different (P<0.05), but not with gender, age, smoking history, histological type(P>0.05); NLR value of the difference between before and after chemotherapy was statistically significant (4.11±2.94 and 3.04±2.55, respectively;P <0.005).Conclusion The later stage NSCLC patients with pathology, NLR value higher;there were reference significance of evaluation of chemotherapy by NRL value reduced after chemotherapy
【Key words】 Neutrophil count/-lymphocyte ratio; Non-small cell lung cancer; Chemotherapy
肺癌是危害人类身体健康的恶性肿瘤之一,炎症和免疫失调在肺癌的发生、发展过程中发挥重要作用,促进癌细胞的增殖及转移。中性粒细胞计数/淋巴细胞比值(NLR)是评价全身炎症反应的重要指标,相关学者已报道NLR与肺癌的不良预后相关[1],目前在晚期肺癌检测NLR相关报道较少,本文回顾性分析84晚期非小细胞肺癌(NSCLC)临床病理资料,探讨NLR与晚期肺癌的临床病理关系及与化疗意义
1.临床资料
1.1 一般资料
2012年12月-2014年12月我科确诊的NSCLC患者。入选标准:病理学及细胞学证实的NSCLC患者,并依据美国癌症联合委员会(AJCC)第7版肺癌分期标准进行分期;ⅢB-Ⅳ期NSCLC,包括未适合手术的ⅢA期患者;至少完成2个疗程化疗;美国东部肿瘤协作组(ECOG)评分<2分;排除标准:SCLC或非原发的NSCLC患者;一个月内有外科手术、放射治疗、肺栓塞、急性心梗、脑血管意外患者;靶向治疗或单药化疗患者;临床资料不全患者。共纳入患者84例,年龄37~79岁,男62例,女22例,腺癌51例,鳞癌33例,Ⅲ期31,Ⅳ期53例。
1.2 方法
患者化疗前及接受2次化疗周期后采集清晨空腹取静脉血,检测中性粒细胞计数、淋巴细胞计数、血小板计数、血红蛋白水平,在化疗前收集患者临床病理资料、ECOG评分。患者每21天接受1次化疗。外周血NLR、PLR分别为白细胞计数、血小板计数与淋巴细胞计数之比。以NLR均值4.11将患者分为两组,NLR<4.11为56例,NLR>4.11为28例,分析NLR与NSCLC临床病理特征关系;并统计分析NLR、PLR、hgb化疗前后的变化。
1.3 统计学方法
采用SPSS19.0统计软件对数据进行统计分析,对服从正态分布的计量资料,用x-±s表示;计数资料采用χ2或Fisher确切概率法分析组间差异,P<0.05为差异有统计学意义。
2.结果
2.1 NLR与肺癌临床病理特征的关系
NLR与肺癌病理分期、ECOG评分、血小板计数、PLR有统计学差异(P均<0.05),与年龄、性别、吸烟史、病理分期无关hgb无统计学差异(P<0.05),见表1。
2.1 NLR、PLR、hgb化疗前后x-±s变化
全组患者接受的主要化疗方案包括:吉西他滨+顺铂/卡铂、多西他赛+顺铂/卡铂、培美曲塞+顺铂/卡铂、多西他赛+顺铂/卡铂。患者NLR值化疗前x-±s 4.11±2.94,化疗后NLR值3.04±2.55,有显著统计学差异(P<0.005),hgb化疗前x-±s 124.49±16.07,化疗后hgb 115.83±15.17,有显著统计学差异(P<0.001);而PLR化疗前后无统计学意义。(P>0.05)。见表2。
表2 NLR、PLR、hgb(g/l) 化疗前后x-±s变化
3.讨论
近年来,全身炎症反应与肿瘤预后及肿瘤进展相关,研究发现外周血中性粒细胞、T和B淋巴细胞及血小板在肿瘤炎症和免疫发挥重要作用[2]。中性粒细胞的增加和淋巴细胞的减少,反映全身炎症反应和抗肿瘤免疫功能失调,NLR升高意味着降低了T淋巴细胞介导的抗肿瘤反应,且常伴有IL-17水平上升及癌旁浸润巨噬细胞(tumor-associated macrophages,TAMs)增加[3],而TAMs与肿瘤血管生成和浸润生长相关,中性粒细胞增加释放的炎症因子有助于刺激肿瘤微环境,促进肿瘤转移。血小板通过分泌血管内皮生长因子[4]、血小板反应蛋白-1等生长因子刺激肿瘤细胞增殖和粘附,促进肿瘤生长和转移,血小板被促炎细胞因子刺激而活化,从而参与中性粒细胞募集[5].本研究亦发现NLR增高患者,血小板计数、PLR亦明显增高,均有有统计学差异。
中性粒细胞计数[6]与淋巴细胞计数[7-8]均有助于肺癌预后判断,多项研究发现NSCLC患者术前NLR增高往往预示预后不良,生存期更短,表明高NLR可作为肺癌独立的预后因子。Tomita M等[1]研究表明术前NLR升高提示患者有较低的5年生存率,Pinato DJ等[9]表明220例患者中术前NLR<5的患者总生存期(OS)为45个月,而NLR>5的患者OS仅为22个月;Cedrés S等[10]研究预后差的Ⅳ期非小细胞肺癌患者有更高的NLR,NLR与肿瘤大小、淋巴结转移相关;晚期NSCLC患者化疗或靶向治疗后NLR明显下降者生存期延长[11-12],表明NLR可作为评估晚期NSCLC患者化疗和靶向治疗疗效的指标。而本组研究发现NLR增高与肺癌病理分期相关,分期越晚,NLR值越高,且化疗后NLR值明显下降,均有统计学差异。
Unal D等 [13] 评估Ⅱ、ⅢA、ⅢB94例NSCLC患者放化疗OS和无病生存率(DFS),联合检测NLR、PLR,单因素分析均与OS和DFS显著相关,但多因素分析发现PLR与OS相关,而NLR与DFS相关,表明PLR独立预测放化疗因素;Hongbing Liu等[14]检测Ⅲ+Ⅳ期210例晚期NSCLC,PLR增高可作为一线化疗及预后的独立因素,但本组研究中并未发现PLR化疗后升高有统计学差异。
目前NLR作为肺癌独立预后因子,其截定值仍待商榷,Yao Y等[11]预处理NLR>2.63评价晚期NSCLC化疗患者DFS和OS的独立危险因子;预处理高NLR>3.44显著缩短NSCLC患者的DFS和OS[13].近期表明NLR>5已显示出作为肺癌患者的预后和预测标志物。研究发现Ⅳ期患者NLR>5,OS呈现整体的下降,且NLR<5有更高的生存率[10];术前NSCLC,NLR>5的患者2年生存率更低[10];Pinato DJ等[15]对270例NSCLC患者NLR分层统计分析,NLR>5在1年和2年患者的中位OS更短,NLR>5证实作为一个独立的预后因素。本研究中以NLR均值分组,亦发现NLR值增高与肺癌分期相关,因病例较少,未进一步评估预后。
中性粒细胞与淋巴细胞比率(NLR)是一种敏感性及特异性较高的炎症标志物,且价格便宜。预处理NLR检测评估肿瘤分期和化疗有一定参考意义,但需大样本量检测以验证这些炎症标志物的预后的作用。
表1 NLR与肺癌患者临床病理特征的关系
注:NLR是白细胞计数与淋巴计数比值,PLR是血小板计数与淋巴计数比值。
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论文作者:韩军,胡宏燕
论文发表刊物:《医药前沿》2015年第23期供稿
论文发表时间:2015/10/14
标签:患者论文; 肺癌论文; 病理论文; 淋巴细胞论文; 粒细胞论文; 统计学论文; 血小板论文; 《医药前沿》2015年第23期供稿论文;