李德来
摘要:目的 探討MCP-1蛋白表达在肺癌及肺结核患者中的临床意义。方法 选取2017年1月~2018年12月我院呼吸科收治的40例肺癌及40例肺结核患者为研究对象,同时选取同期在我院体检健康人群40例为对照组,对比三组血清及PBMC上清液中MCP-1浓度及不同期、不同病理类型肺癌患者血清及PBMC上清液中MCP-1浓度和初治和复治肺结核血清及PBMC上清液中MCP-1浓度。结果 肺结核组及肺癌组血清及PBMC上清液中MCP-1浓度高于对照组,且肺结核组高于肺癌组,差异有统计学意义(P<0.05);晚期肺癌患者血清及PBMC上清液中MCP-1浓度分别为(152.71±12.56)pg/ml、(419.52±33.93)pg/ml,均高于早期肺癌患者的(73.21±7.90)pg/ml、(312.60±28.62)pg/ml,差异均有统计学意义(P<0.05);三种不同病理类型肺癌患者血清及PBMC上清液中MCP-1浓度比较,差异无统计学意义(P>0.05);肺结核复治患者血清及PBMC上清液中MCP-1浓度分别为(173.65±13.22)pg/ml、(520.11±67.28)pg/ml,高于肺结核初治患者的(156.21±9.13)pg/ml、(498.34±50.03)pg/ml,差异有统计学意义(P<0.05)。结论 血清MCP-1蛋白水平于肺癌及肺结核的发生、病情发展有密切的关系,且随病情的进展会升高,临床可将其作为诊治的重要指标。
关键词:单核细胞趋化蛋白-1; 肺癌; 肺结核
中图分类号:R734.2 文献标识码:A DOI:10.3969/j.issn.1006-1959.2019.19.057
文章编号:1006-1959(2019)19-0171-03
Clinical Significance of Serum MCP-1 Protein Level in the Diagnosis
of Lung Cancer and Pulmonary Tuberculosis
LI De-lai
(Department of Clinical Laboratory,Beichen Hospital of Traditional Chinese Medicine,Tianjin University of
Traditional Chinese Medicine,Tianjin 300000,China)
Abstract:Objective To investigate the clinical significance of MCP-1 protein expression in patients with lung cancer and pulmonary tuberculosis. Methods 40 patients with lung cancer and 40 patients with pulmonary tuberculosis admitted to our hospital from January 2017 to December 2018 were enrolled in the study. At the same time, 40 healthy subjects in our hospital were selected as the control group,and the concentration of MCP-1 in serum and PBMC supernatant in the three groups were compared.The concentration of MCP-1 in serum and PBMC supernatant of lung cancer patients with different pathological types and the concentration of MCP-1 in serum and PBMC supernatant of newly diagnosed and retreated pulmonary tuberculosis.Results The concentration of MCP-1 in serum and PBMC supernatant of pulmonary tuberculosis group and lung cancer group was higher than that of control group, and the tuberculosis group was higher than that in lung cancer group, the difference was statistically significant (P<0.05); the concentration of MCP-1 in serum and PBMC supernatant of late stage lung cancer patients was (152.71±12.56)pg/ml、(419.52±33.93)pg/ml, which was higher than that in early stage lung cancer patients (73.21±7.90)pg/ml、(312.60±28.62)pg/ml,the difference was statistically significant (P<0.05); there was no significant difference in the concentration of MCP-1 in serum and PBMC supernatant of three different pathological types (P>0.05); the concentration of MCP-1 in serum and PBMC supernatant of retreated pulmonary tuberculosis patients was (173.65±13.22)pg/ml、(520.11±67.28)pg/ml, which was higher than that in untreated pulmonary tuberculosis patients (156.21±9.13)pg/ml、(498.34±50.03)pg/ml, the difference was statistically significant (P<0.05).Conclusion Serum MCP-1 protein level is closely related to the occurrence and development of lung cancer and tuberculosis, and it will increase with the progress of the disease. It can be used as an important indicator for diagnosis and treatment.
Key words:Monocyte chemoattractant protein-1;Lung cancer;Tuberculosis
单核细胞趋化蛋白-1(monocyte chemoattractant protein-1,MCP-1)是趋化性细胞因子β亚家族的代表,其主要作用为激活并趋化单核细胞至炎症部位。MCP-1能够诱导血液中的单核细胞发生迁移并在炎症部位聚集发挥生物学效应,MCP-1在慢性炎症、肿瘤发展及机体防御方面起到重要作用[1]。研究显示糖尿病肾病患者体内MCP-1浓度明显高于正常人群,这与MCP-1趋化单核细胞、激活粘附分子、活化转化生长因子、诱导释放溶酶体等密切相关[2]。本研究采用ELISA法检测肺癌及肺结核患者血清及外周血单个核细胞(PBMC)上清液中的MCP-1浓度并进行对比分析,以期了解MCP-1在肺癌及肺结核中的临床意义。
1资料与方法
1.1一般资料 选取2017年1月~2018年12月天津中医药大学附属北辰中医医院收治的40例肺癌患者及40例肺结核患者为病例组研究对象。纳入标准:①均符合肺癌、肺结核诊断标准[3];②均痰液培养确诊。排除标准:①精神疾病,心肺、肝肾等重要器官严重损害者;②妊娠、哺乳期妇女;③过敏体质者。肺癌组男性25例,女性15例;年龄28~73岁,平均年龄(64.31±12.24)岁;早期肺癌15例,晚期肺癌25例;鳞癌13例,腺癌15例,小细胞癌12例。肺结核组男29例,女11例;年龄26~72岁,平均年龄(52.30±14.21)岁;初治肺结核23例,复治肺结核17例。同期选取我院体检健康人群30例作为对照组,男性26例,女性14例;年龄25~73岁,平均年龄(55.42±15.91)岁。三组年龄、性别等基础资料方面比较,差异无统计学意义(P>0.05),具有可比性。本研究经过医院伦理委员会批准,患者自愿参加本研究,并签署知情同意书。
1.2方法 所有研究对象于清晨空腹抽取肘静脉血10 ml,采用JIDI-4D-WS自动平衡实验室离心机离心10 min,然后提取上清液,于-80℃下保存备用。采用淋巴细胞分离液分离PBMC,并在37℃、5% CO2下培养备用。采用人MCP-1定量ELISA试剂盒(北京生物科技有限公司,國药准字:H20100001)进行血清及PBMC上清液中人MCP-1蛋白浓度的检测[4]。
1.3观察指标 比较三组血清及PBMC上清液中MCP-1浓度、不同期(早期、晚期)、不同病理类型(鳞癌、腺癌、小细胞癌)肺癌患者血清及PBMC上清液中MCP-1浓度以及初治和复治肺结核血清及PBMC上清液中MCP-1浓度。
1.4统计学方法 数据分析使用SPSS 24.0统计软件进行分析,计量资料采用(x±s)表示,两组间比较采用t检验,计数资料采用(n)表示,两组间比较采用?字2检验,P<0.05为差异有统计学意义。
2 结果
2.1三组血清及PBMC上清液中MCP-1浓度比较 肺结核组及肺癌组血清及PBMC上清液中MCP-1浓度高于对照组,且肺结核组高于肺癌组,差异有统计学意义(P<0.05),见表1。
2.2肺癌患者血清及PBMC上清液中MCP-1浓度比较
2.2.1肺癌早期及晚期患者血清及PBMC上清液中MCP-1浓度比较 晚期肺癌患者血清及PBMC上清液中MCP-1浓度均高于早期肺癌患者,差异均有统计学意义(P<0.05),见表2。
2.2.2不同病理类型肺癌患者血清及PBMC上清液中MCP-1浓度比较 三种不同病理类型肺癌患者血清及PBMC上清液中MCP-1浓度比较,差异无统计学意义(P>0.05),见表3。
2.3初治和复治肺结核患者血清及PBMC上清液中MCP-1浓度比较 肺结核复治患者血清及PBMC上清液中MCP-1浓度高于肺结核初治患者,差异有统计学意义(P<0.05),见表4。
3 讨论
肺癌与肺结核临床鉴别诊断,主要是通过痰液结合杆菌培养、影像学等方法诊断,但是两种疾病早期临床症状较为相似,所以,临床容易误诊。肺癌是由多种因素共同作用参与的,在整个过程中伴随新生血管形成,并参与肿瘤的的生长。肺结核患者因感染结核分枝杆菌,在这个免疫应答过程中,T细胞、单核细胞及巨噬细胞在感染部位聚集,引起组织炎症及肉芽肿的形成,因此趋化因子MCP-1可能在结核病的发病机制中起到重要作用。
MCP-1对单核细胞的趋化活性已被体内及体外实验证实,MCP-1不仅能诱导单核细胞数量的增加,激活单核细胞及巨噬细胞,产生及释放超氧阴离子,还能促进单核细胞粘附分子及细胞因子IL-1、IL-6,介导细胞的迁移,吞噬及粘附功能。除此之外,MCP-1还参与免疫应答的调节,抑制T细胞的活性及功能。因此,MCP-1于肺结核和肺癌的发生、病情进展有一定的关系。
本研究结果显示,肺结核组及肺癌组血清及PBMC上清液中MCP-1浓度高于对照组,且肺结核组高于肺癌组,晚期肺癌患者血清及PBMC上清液中MCP-1浓度分别为(152.71±12.56)pg/ml、(419.52±33.93)pg/ml,均高于早期肺癌患者的(73.21±7.90)pg/ml、(312.60±28.62)pg/ml,差异均有统计学意义(P<0.05);该结果可能与炎性细胞的浸润、局部血管生成相关。同时在晚期患者中MCP-1表达明显上升,提示MCP-1与肿瘤血管迅速生成密切相关。三种不同病理类型肺癌患者血清及PBMC上清液中MCP-1浓度比较(P>0.05),表明不同病理类型肺癌患者MCP-1浓度水平基本相同。肺结核复治患者血清及PBMC上清液中MCP-1浓度分别为(173.65±13.22)pg/ml、(520.11±67.28)pg/ml,高于肺结核初治患者的(156.21±9.13)pg/ml、(498.34±50.03)pg/ml,差异有统计学意义(P<0.05)。由此可见,MCP-1的浓度与肺结核严重程度密切相关,MCP-1在肺结核的致病过程中发挥重要作用,与殷凯等[5]的研究结果基本一致。
血清MCP-1蛋白水平于肺癌及肺结核的发生、病情发展有密切的关系,且随病情的进展会升高,临床可将其作为诊治的重要指标。
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