醫(yī)學(xué)論文范文:EGFR和SBEM聯(lián)合檢測(cè)在乳腺癌外周血微轉(zhuǎn)移中的意義
【摘要】 目的:探討乳腺癌患者外周血表皮生長(zhǎng)因子受體(EGFR)及乳腺上皮粘蛋白(SBEM)的表達(dá)及臨床意義。方法:采用酶聯(lián)免疫吸附試驗(yàn)(ELISA法)定量檢測(cè)58例乳腺癌患者及30例乳腺纖維腺瘤患者術(shù)前血清中EGFR和SBEM的含量。結(jié)果:乳腺癌組術(shù)前血清EGFR和SBEM含量均高于纖維腺瘤對(duì)照組 (P<0.01)。有淋巴結(jié)轉(zhuǎn)移的乳腺癌患者血清中EGFR和SBEM含量明顯高于無淋巴結(jié)轉(zhuǎn)移者,Ⅲ+Ⅳ期患者血清中EGFR和SBEM含量亦顯著高于Ⅰ+Ⅱ期,差異均有統(tǒng)計(jì)學(xué)意義(P<0.05)。乳腺癌患者術(shù)前血清中EGFR和SBEM含量無相關(guān)性(r=-0.45,P=0.74)。結(jié)論:EGFR及SBEM特異性表達(dá)于乳腺癌外周血,有可能作為檢測(cè)乳腺癌外周血微轉(zhuǎn)移的標(biāo)志物,并有可能在乳腺癌微轉(zhuǎn)移診斷和預(yù)后判斷中具有重要意義。
【關(guān)鍵詞】 表皮生長(zhǎng)因子受體 乳腺上皮粘蛋白 乳腺癌
Detection of EGFR and SBEM in peripheral blood from patients with breast cancer and its significance
ZHANG Di, HUANG Yanchun醫(yī).學(xué)全.在.線網(wǎng)站m.payment-defi.com
(Department of Clinical Laboratory, Affiliated Tumor Hospital, Xinjiang Medical University,Urumqi 830011, China)
Abstract: Objective: To explore the expressions of epidermal growth factor receptor (EGFR) and small breast epithelial mucin (SBEM) in peripheral blood from patients with breast cancer and their clinical significance. Methods: The expressions of EGFR and SBEM in serum were detected from 58 patients with breast cancer, 30 breast fibroadenoma by enzymelinked immunosorbent assay (ELISA). Results: Compared with breast fibroadenoma group, the levels of serum EGFR and SBEM in breast cancer were much higher (P<0.01). The levels of serum EGFR and SBEM of patients with lymph node metastasis were significantly higher than those in the negative, and the levels of patients in stages Ⅲ+Ⅳ were also significantly higher than those in the stagesⅠ+Ⅱ (P<0.05). The serum EGFR level was not correlated with the serum SBEM level (r=-0.45,P=0.74). Conclusion: EGFR and SBEM are specifically expressed in peripheral blood of breast cancer patients, and each of them may be marker of micrometastasis of breast cancer.
Key words: epidermal growth factor receptor(EGFR); small breast epithelial mucin (SBEM); breast cancer
近年來,中國(guó)乳腺癌的發(fā)病率在女性惡性腫瘤中已躍居首位[1]。大約有30%的乳腺癌患者最終發(fā)生遠(yuǎn)處轉(zhuǎn)移[2]。乳腺癌轉(zhuǎn)移無固定模式,早期乳腺癌即可發(fā)生隱匿性轉(zhuǎn)移。血液循環(huán)中的腫瘤細(xì)胞是導(dǎo)致乳腺癌血行轉(zhuǎn)移和復(fù)發(fā)的重要原因之一,因此,早期外周血微轉(zhuǎn)移的檢測(cè),對(duì)指導(dǎo)乳腺癌臨床治療和判斷預(yù)后具有重要意義。我們采用酶聯(lián)免疫吸附試驗(yàn)(ELISA法)檢測(cè)乳腺癌患者外周血中EGFR和SBEM的表達(dá),探討其在乳腺癌微轉(zhuǎn)移中的臨床意義。
1材料與方法
1.1研究對(duì)象選擇2008年3月~2008年8月在我院行手術(shù)治療,無肝炎以及免疫系統(tǒng)疾病等合并癥,經(jīng)病理確診為乳腺癌和乳腺纖維腺瘤的患者88例。其中乳腺癌組58例,患者均為女性,年齡30~77歲,平均年齡50.1歲,中位年齡48.5歲。浸潤(rùn)性導(dǎo)管癌48例,髓樣癌2例,粘液癌2例,浸潤(rùn)性小葉癌3例,混合型癌(浸潤(rùn)性導(dǎo)管癌和浸潤(rùn)性小葉癌)3例。按照UICC1988年制訂的乳腺癌TNM分期標(biāo)準(zhǔn):Ⅰ期15例,Ⅱ期21例,Ⅲ期19例,Ⅳ期3例。良性對(duì)照組均為乳腺纖維腺瘤,患者均為女性,年齡27~49歲,平均年齡38.9歲,中位年齡39歲。所有患者術(shù)前未接受過放化療或生物治療等干預(yù)措施。
1.2方法
1.2.1標(biāo)本采集兩組均抽取空腹靜脈血2 ml于真空采血管(含分離膠,美國(guó)BD)內(nèi),靜置1 h,以3 000 r/min離心10 min分離血清,-20 ℃冰箱保存待測(cè)醫(yī).學(xué)全.在.線網(wǎng)站m.payment-defi.com。
1.2.2實(shí)驗(yàn)方法兩組均采用ELISA法測(cè)定,試劑盒均購自美國(guó)R&D Systems公司,檢測(cè)步驟嚴(yán)格按試劑盒說明書進(jìn)行。ELISA數(shù)據(jù)分析由TECAN全自動(dòng)酶標(biāo)儀RMP150型讀取。EGFR單位為fmol/L, SBEM單位為ng/ml。
1.3統(tǒng)計(jì)學(xué)處理用SPSS13.0軟件包進(jìn)行統(tǒng)計(jì)學(xué)處理。采用非參數(shù)統(tǒng)計(jì)方法,數(shù)據(jù)以中位數(shù)(Median,M)及四分位數(shù)間距(Quartiles,Q)表示。兩組數(shù)據(jù)的比較應(yīng)用完全隨機(jī)設(shè)計(jì)兩樣本比較的秩和檢驗(yàn),相關(guān)分析應(yīng)用Spearman等級(jí)相關(guān)。檢驗(yàn)水準(zhǔn)α=0.05。
2結(jié)果
2.1兩組術(shù)前血清EGFR和SBEM含量的比較乳腺癌組術(shù)前血清EGFR含量91.7(22.3,264.6) fmol/L高于纖維腺瘤對(duì)照組20.9(26.9,55.6) fmol/L,差異有統(tǒng)計(jì)學(xué)意義(Z=-4.213,P<0.01);乳腺癌組術(shù)前血清SBEM含量4.8(1.8,9.3) ng/ml高于纖維腺瘤對(duì)照組1.2(0.98,2.1) ng/ml,差異有統(tǒng)計(jì)學(xué)意義(Z=-3.411,P<0.01)。
2.2乳腺癌患者術(shù)前血清中EGFR和SBEM含量與乳腺癌病理特征的關(guān)系有淋巴結(jié)轉(zhuǎn)移的乳腺癌患者血清中EGFR和SBEM含量明顯高于無淋巴結(jié)轉(zhuǎn)移者,Ⅲ+Ⅳ期患者血清中EGFR和SBEM含量亦顯著高于Ⅰ+Ⅱ期,差異均有統(tǒng)計(jì)學(xué)意義(P<0.05),見表1。
2.3乳腺癌患者術(shù)前血清中EGFR和SBEM含量的相關(guān)性通過Spearman相關(guān)性分析,乳腺癌患者術(shù)前血清中EGFR和SBEM含量無相關(guān)性(r=-0.45,P=0.74)。
表1乳腺癌患者術(shù)前血清中EGFR和SBEM含量與乳腺癌病理特征的關(guān)系(略)