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乳腺癌CA化疗方案_血清MFGE8与CA125\CEA对乳腺癌诊断价值探讨

时间:2019-01-24 来源:东星资源网 本文已影响 手机版

  【摘要】目的:探讨血清中MFGE8水平及与乳腺癌诊断的关系。方法:收集62例乳腺癌患者(乳腺癌组)、49例乳腺良性肿瘤患者(良性组)及105例女性健康体检者(对照组)血清,用ELISA方法检测MFGE8水平,采用电化学发光法检测CA125和CEA水平,并对结果进行统计学分析。结果:乳腺癌组患者血清中MFGE8、CA125和CEA水平分别为(6638.5±3529.3)pg/ml、(34.58±31.26)U/ml和(4.39±3.25)ng/ml,MFGE8显著高于其他两组;乳腺癌组MFGE8、CA125和CEA的阳性率分别是65.4%、50.9%和30.3%,联合检测MFGE8、CA125和CEA,检出率可提高至85.3%。结论:血清MFGE8水平可以和CA125、CEA一同作为诊断乳腺癌的指标。
  【关键词】乳腺肪球因子8;CA125;CEA;乳腺癌
  
  Diagnostic Value of Serum MFGE8,CA125 and CEA on Breast Cancer/LI Jie-bao,ZHANG Jia-heng//Medical Innovation of China,2012,9(10):082-084
  【Abstract】Objective:To discuss the serum level of MFGE8 and the relationship between MFGE8 and diagnosis of breast cancer.Methods:Eenzyme-linked immunosorbent assay was introduced to detect serum level of MFGE8 and electrochemiluminescence immunoassay introduced to detect serum level of CA125 and CEA.Results:The serum levels of MFGE8,CA125 and CEA in patients with breast cancer were (6638.5±3529.3)pg/ml,(34.58±31.26)U/ml and (4.39±3.25)ng/ml respectively,which were significantly higher than others.The positive incidence of MFGE8,CA125 and CEA in patients with breast cancer were 65.4%,50.9% and 30.3%.By combined detection of MFGE8,CA125 and CEA,the positive rate of breast cancer could be greatly improved to 85.3%.Conclusion:The serum level of MFGE8 can be reviewed as a kind of valuable biomarker in the diagnosis of breast cancer,together with CA125 and CEA.
  【Key words】MFGE8; CA125;CEA;Breast cancer
  First-author’s address:Wuhan NO.1 Hospital,Wuhan 430022,China
  doi:10.3969/j.issn.1674-4985.2012.10.050
  
  乳腺癌(breast cancer)早期诊断是提高患者治愈率和降低死亡率的关键。乳腺癌相关肿瘤标志物的研究已取得迅速发展,但寻找特异性强、灵敏度高的理想标志物仍是目前临床医学研究的重点。
  乳脂肪球因子8(human milk fat globule EGF factor Ⅷ,MFGE8)最早在小鼠乳房上皮细胞内被发现[1],随后该蛋白在不同的物种内独立地被鉴定出来,并给予了不同的命名[2-5],如BA-46(人)、PAS-6/7或lactadherin(牛)、P47(猪),另外,在小鼠的精子细胞上,该蛋白根据其结构功能也被命名为SED1(Secreted protein containing EGF repeats and Discoidin/F5/8 complement domains 1,SED1)[6]。目前,在乳腺癌患者的血清中发现,MFGE8水平明显高于乳腺良性肿瘤患者和正常人群水平。为此,笔者对乳腺癌患者血清MFGE8、CA125和CEA进行联合检测,探讨其在乳腺癌诊断中的价值。
  1资料与方法
  1.1一般资料乳腺癌患者62例(乳腺癌组),均为女性,平均年龄57.6岁,均经病理确诊。其中浸润性导管癌48例,导管内癌12例,浸润性小叶癌2例。乳腺良性肿瘤患者49例(良性组),均为女性,平均年龄53.4岁,亦经病理确诊。其中纤维腺瘤32例,乳腺腺病11例,浆细胞性乳腺炎6例。对照组105例,为笔者所在医院保健体检科同期女性健康体检者,平均年龄47.5岁,体检结果均未发现乳腺疾病及其他肿瘤。各组一般资料比较差异均无统计学意义(P>0.05),具有可比性。
  1.2MFGE8、CA125和CEA检测方法晨起空腹采静脉血,迅速分离血清,-20 ℃保存。采用美国罗氏E170及配套试剂,以电化学方法检测CA125和CEA水平。方法简述如下,采用双抗夹心法,(1)生物素化的抗CA125单克隆抗体和钌(Ru)标记的抗CA125单克隆抗体混匀,形成夹心复合物;(2)加了链霉亲和素包被和微粒,让上述形成的复合物通过生物素与链霉亲和素间的反应结合到微粒上;(3)反应混合液吸到测量池中,微粒通过磁铁吸附到电极上,未结合的物质被清洗液洗去,电极加电压后产生化学发光,通过光电倍增管进行测定。CEA检测方法同CA125。血清MFGE8水平检测采用亲和素-生物素ELISA法,检测试剂盒为武汉CUSABIO公司产品,酶标仪为Thermo multiskan MK3。方法简述如下,实验操作按试剂盒说明书进行,设标准孔(0 pg/ml,390 pg/ml,780 pg/ml, 1560 pg/ml,3120 pg/ml,6250 pg/ml,12500 pg/ml, 25000 pg/ml)和待测实验组及对照组孔,分别加样100 μl,37 ℃反应120 min;弃去液体,甩干,每孔加生物素标记抗体工作液100 μl,37 ℃反应60 min;洗板5次;依次每孔加底物90 μl,显色,加终止液50 μl;双波长比色测定OD值并制作标准曲线,查出相应的浓度。
  1.3临界值设定CEA临界值为3.4 ng/ml,CA125临界值为25 U/ml,超过临界值判定为阳性。
  1.4统计学处理采取SPSS 13.0软件行统计学分析,计量资料以(x±s)表示,组内行配对t检验,组间行成组t检验,计数资料采用字2检验,以P   2结果
  2.1各组MFGE8、CA125和CEA血清水平比较三项指标的检测结果分别在乳腺癌组与良性组比较,差异有统计学意义(P   [6] Ensslin M A,Ahur B D.Identification of mouse sperm SED1:a bi-motif EGF repeat and discoidin-domain protein involved in sperm-egg binding[J].Cell,2003,114(4):405-417.
  [7] 钱海英.肿瘤标志物CEA、CA125、CA153联合检测在乳腺癌中的临床应用[J].医学检验与临床,2008,19(2):32.
  [8] Hinestrosa M C,Diekersin K,Klein P,et al.Shaping the future of biomarker research in breast cancer to ensure clinical relevance[J].Nature,2007,7(4):311-315.
  [9] Mather I H.The mammary gland,development,regulation and function[M].New York:Plenum Publishing,1987:80-85.
  [10] Larocca D,Peterson J A,Urrea R,et al.A Mr 46000 Human milk fat globule protein that is highly expressed in human breast tumors contains factor VIII-like domains cancer[J].Res,1991,51(1):4994-4998.
  [11] Kamran A,Rafael F,Xiaozhu H,et al.Autoimmune disease and impaired uptake of apoptotic ceils in MFGE8 deficient mice[J].Molecular Biology of the Cell,2005,16(3):5528-5537.
  [12] Newburg D S,Peterson J A,Ruiz-Palacios G M,et al.Role of human milk lactadherin in protection against symptomatic rotavirus infection[J].Lancet,1998,351(9110):1160-1164.
  [13] 李金丽,崔天盆.MFGE8的生物学功能及应用[J].医学分子生物学杂志,2010,7(5):467-470.
  (收稿日期:2012-02-27)(本文编辑:李静)

标签:血清 乳腺癌 诊断 探讨