李德來
摘要:目的 ?探討MCP-1蛋白表達(dá)在肺癌及肺結(jié)核患者中的臨床意義。方法 ?選取2017年1月~2018年12月我院呼吸科收治的40例肺癌及40例肺結(jié)核患者為研究對象,同時(shí)選取同期在我院體檢健康人群40例為對照組,對比三組血清及PBMC上清液中MCP-1濃度及不同期、不同病理類型肺癌患者血清及PBMC上清液中MCP-1濃度和初治和復(fù)治肺結(jié)核血清及PBMC上清液中MCP-1濃度。結(jié)果 ?肺結(jié)核組及肺癌組血清及PBMC上清液中MCP-1濃度高于對照組,且肺結(jié)核組高于肺癌組,差異有統(tǒng)計(jì)學(xué)意義(P<0.05);晚期肺癌患者血清及PBMC上清液中MCP-1濃度分別為(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,差異均有統(tǒng)計(jì)學(xué)意義(P<0.05);三種不同病理類型肺癌患者血清及PBMC上清液中MCP-1濃度比較,差異無統(tǒng)計(jì)學(xué)意義(P>0.05);肺結(jié)核復(fù)治患者血清及PBMC上清液中MCP-1濃度分別為(173.65±13.22)pg/ml、(520.11±67.28)pg/ml,高于肺結(jié)核初治患者的(156.21±9.13)pg/ml、(498.34±50.03)pg/ml,差異有統(tǒng)計(jì)學(xué)意義(P<0.05)。結(jié)論 ?血清MCP-1蛋白水平于肺癌及肺結(jié)核的發(fā)生、病情發(fā)展有密切的關(guān)系,且隨病情的進(jìn)展會升高,臨床可將其作為診治的重要指標(biāo)。
關(guān)鍵詞:單核細(xì)胞趨化蛋白-1; 肺癌; 肺結(jié)核
中圖分類號:R734.2 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?文獻(xiàn)標(biāo)識碼:A ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?DOI:10.3969/j.issn.1006-1959.2019.19.057
文章編號: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
單核細(xì)胞趨化蛋白-1(monocyte chemoattractant protein-1,MCP-1)是趨化性細(xì)胞因子β亞家族的代表,其主要作用為激活并趨化單核細(xì)胞至炎癥部位。MCP-1能夠誘導(dǎo)血液中的單核細(xì)胞發(fā)生遷移并在炎癥部位聚集發(fā)揮生物學(xué)效應(yīng),MCP-1在慢性炎癥、腫瘤發(fā)展及機(jī)體防御方面起到重要作用[1]。研究顯示糖尿病腎病患者體內(nèi)MCP-1濃度明顯高于正常人群,這與MCP-1趨化單核細(xì)胞、激活粘附分子、活化轉(zhuǎn)化生長因子、誘導(dǎo)釋放溶酶體等密切相關(guān)[2]。本研究采用ELISA法檢測肺癌及肺結(jié)核患者血清及外周血單個(gè)核細(xì)胞(PBMC)上清液中的MCP-1濃度并進(jìn)行對比分析,以期了解MCP-1在肺癌及肺結(jié)核中的臨床意義。
1資料與方法
1.1一般資料 ?選取2017年1月~2018年12月天津中醫(yī)藥大學(xué)附屬北辰中醫(yī)醫(yī)院收治的40例肺癌患者及40例肺結(jié)核患者為病例組研究對象。納入標(biāo)準(zhǔn):①均符合肺癌、肺結(jié)核診斷標(biāo)準(zhǔn)[3];②均痰液培養(yǎng)確診。排除標(biāo)準(zhǔn):①精神疾病,心肺、肝腎等重要器官嚴(yán)重?fù)p害者;②妊娠、哺乳期婦女;③過敏體質(zhì)者。肺癌組男性25例,女性15例;年齡28~73歲,平均年齡(64.31±12.24)歲;早期肺癌15例,晚期肺癌25例;鱗癌13例,腺癌15例,小細(xì)胞癌12例。肺結(jié)核組男29例,女11例;年齡26~72歲,平均年齡(52.30±14.21)歲;初治肺結(jié)核23例,復(fù)治肺結(jié)核17例。同期選取我院體檢健康人群30例作為對照組,男性26例,女性14例;年齡25~73歲,平均年齡(55.42±15.91)歲。三組年齡、性別等基礎(chǔ)資料方面比較,差異無統(tǒng)計(jì)學(xué)意義(P>0.05),具有可比性。本研究經(jīng)過醫(yī)院倫理委員會批準(zhǔn),患者自愿參加本研究,并簽署知情同意書。
1.2方法 ?所有研究對象于清晨空腹抽取肘靜脈血10 ml,采用JIDI-4D-WS自動(dòng)平衡實(shí)驗(yàn)室離心機(jī)離心10 min,然后提取上清液,于-80℃下保存?zhèn)溆?。采用淋巴?xì)胞分離液分離PBMC,并在37℃、5% CO2下培養(yǎng)備用。采用人MCP-1定量ELISA試劑盒(北京生物科技有限公司,國藥準(zhǔn)字:H20100001)進(jìn)行血清及PBMC上清液中人MCP-1蛋白濃度的檢測[4]。
1.3觀察指標(biāo) ?比較三組血清及PBMC上清液中MCP-1濃度、不同期(早期、晚期)、不同病理類型(鱗癌、腺癌、小細(xì)胞癌)肺癌患者血清及PBMC上清液中MCP-1濃度以及初治和復(fù)治肺結(jié)核血清及PBMC上清液中MCP-1濃度。
1.4統(tǒng)計(jì)學(xué)方法 ?數(shù)據(jù)分析使用SPSS 24.0統(tǒng)計(jì)軟件進(jìn)行分析,計(jì)量資料采用(x±s)表示,兩組間比較采用t檢驗(yàn),計(jì)數(shù)資料采用(n)表示,兩組間比較采用?字2檢驗(yàn),P<0.05為差異有統(tǒng)計(jì)學(xué)意義。
2 結(jié)果
2.1三組血清及PBMC上清液中MCP-1濃度比較 ?肺結(jié)核組及肺癌組血清及PBMC上清液中MCP-1濃度高于對照組,且肺結(jié)核組高于肺癌組,差異有統(tǒng)計(jì)學(xué)意義(P<0.05),見表1。
2.2肺癌患者血清及PBMC上清液中MCP-1濃度比較
2.2.1肺癌早期及晚期患者血清及PBMC上清液中MCP-1濃度比較 ?晚期肺癌患者血清及PBMC上清液中MCP-1濃度均高于早期肺癌患者,差異均有統(tǒng)計(jì)學(xué)意義(P<0.05),見表2。
2.2.2不同病理類型肺癌患者血清及PBMC上清液中MCP-1濃度比較 ? 三種不同病理類型肺癌患者血清及PBMC上清液中MCP-1濃度比較,差異無統(tǒng)計(jì)學(xué)意義(P>0.05),見表3。
2.3初治和復(fù)治肺結(jié)核患者血清及PBMC上清液中MCP-1濃度比較 ?肺結(jié)核復(fù)治患者血清及PBMC上清液中MCP-1濃度高于肺結(jié)核初治患者,差異有統(tǒng)計(jì)學(xué)意義(P<0.05),見表4。
3 討論
肺癌與肺結(jié)核臨床鑒別診斷,主要是通過痰液結(jié)合桿菌培養(yǎng)、影像學(xué)等方法診斷,但是兩種疾病早期臨床癥狀較為相似,所以,臨床容易誤診。肺癌是由多種因素共同作用參與的,在整個(gè)過程中伴隨新生血管形成,并參與腫瘤的的生長。肺結(jié)核患者因感染結(jié)核分枝桿菌,在這個(gè)免疫應(yīng)答過程中,T細(xì)胞、單核細(xì)胞及巨噬細(xì)胞在感染部位聚集,引起組織炎癥及肉芽腫的形成,因此趨化因子MCP-1可能在結(jié)核病的發(fā)病機(jī)制中起到重要作用。
MCP-1對單核細(xì)胞的趨化活性已被體內(nèi)及體外實(shí)驗(yàn)證實(shí),MCP-1不僅能誘導(dǎo)單核細(xì)胞數(shù)量的增加,激活單核細(xì)胞及巨噬細(xì)胞,產(chǎn)生及釋放超氧陰離子,還能促進(jìn)單核細(xì)胞粘附分子及細(xì)胞因子IL-1、IL-6,介導(dǎo)細(xì)胞的遷移,吞噬及粘附功能。除此之外,MCP-1還參與免疫應(yīng)答的調(diào)節(jié),抑制T細(xì)胞的活性及功能。因此,MCP-1于肺結(jié)核和肺癌的發(fā)生、病情進(jìn)展有一定的關(guān)系。
本研究結(jié)果顯示,肺結(jié)核組及肺癌組血清及PBMC上清液中MCP-1濃度高于對照組,且肺結(jié)核組高于肺癌組,晚期肺癌患者血清及PBMC上清液中MCP-1濃度分別為(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,差異均有統(tǒng)計(jì)學(xué)意義(P<0.05);該結(jié)果可能與炎性細(xì)胞的浸潤、局部血管生成相關(guān)。同時(shí)在晚期患者中MCP-1表達(dá)明顯上升,提示MCP-1與腫瘤血管迅速生成密切相關(guān)。三種不同病理類型肺癌患者血清及PBMC上清液中MCP-1濃度比較(P>0.05),表明不同病理類型肺癌患者M(jìn)CP-1濃度水平基本相同。肺結(jié)核復(fù)治患者血清及PBMC上清液中MCP-1濃度分別為(173.65±13.22)pg/ml、(520.11±67.28)pg/ml,高于肺結(jié)核初治患者的(156.21±9.13)pg/ml、(498.34±50.03)pg/ml,差異有統(tǒng)計(jì)學(xué)意義(P<0.05)。由此可見,MCP-1的濃度與肺結(jié)核嚴(yán)重程度密切相關(guān),MCP-1在肺結(jié)核的致病過程中發(fā)揮重要作用,與殷凱等[5]的研究結(jié)果基本一致。
血清MCP-1蛋白水平于肺癌及肺結(jié)核的發(fā)生、病情發(fā)展有密切的關(guān)系,且隨病情的進(jìn)展會升高,臨床可將其作為診治的重要指標(biāo)。
參考文獻(xiàn):
[1]王艷,陳璐.LEP、TNF-a、CEA、CRP和1L>6在結(jié)核病與惡性腫瘤中的鑒別珍斷價(jià)值[J].中國實(shí)驗(yàn)診斷學(xué),2014,18(12):1993-1996.
[2]楊勐航,臧遠(yuǎn)勝,李兵.肺癌新生血管生成機(jī)制研究進(jìn)展[J].第二軍醫(yī)大學(xué)學(xué)報(bào),2014,34(4):434-439.
[3]彭春仙,鄭曉燕,范劍,等.趨化因子、MSP聯(lián)合癌胚抗原檢測在肺結(jié)核與肺癌鑒別診斷中的意義[J].中華臨床感染病雜志,2013,6(6):331-334.
[4]張寶秋,王雪玉,楊晶,等.肺結(jié)核患者單核細(xì)胞趨化因子蛋白-1基因多態(tài)性的檢測[J].中華臨床醫(yī)師雜志:電子版,2015,7(17):24-26.
[5]殷凱,岳靜靜,馮源.血清瘦素對肺癌診斷價(jià)值的Meta分析[J].江蘇醫(yī)藥,2014,40(14):1652-1655.