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層粘連蛋白(LN)檢測(cè)試劑盒(酶聯(lián)免疫吸附試驗(yàn)法)

ELISA Kit for Laminin (LN)

LAM

    • 層粘連蛋白(LN)檢測(cè)試劑盒(酶聯(lián)免疫吸附試驗(yàn)法)產(chǎn)品包裝(模擬)
    • 層粘連蛋白(LN)檢測(cè)試劑盒(酶聯(lián)免疫吸附試驗(yàn)法)產(chǎn)品包裝(模擬)
    • 層粘連蛋白(LN)檢測(cè)試劑盒(酶聯(lián)免疫吸附試驗(yàn)法)實(shí)驗(yàn)結(jié)果圖
    • SEA082Mu.jpg標(biāo)準(zhǔn)曲線圖
    • Certificate通過(guò)ISO 9001、ISO 13485質(zhì)量體系認(rèn)證

    特異性

    本試劑盒用于檢測(cè)層粘連蛋白(LN),經(jīng)檢測(cè)與其它相似物質(zhì)無(wú)明顯交叉反應(yīng)。
    由于受到技術(shù)及樣本來(lái)源的限制,不可能完成對(duì)所有相關(guān)或相似物質(zhì)交叉反應(yīng)檢測(cè),因此本試劑盒有可能與未經(jīng)檢測(cè)的其它物質(zhì)有交叉反應(yīng)。

    回收率

    分別于定值血清及血漿樣本中加入一定量的層粘連蛋白(LN)(加標(biāo)樣品),重復(fù)測(cè)定并計(jì)算其均值,回收率為測(cè)定值與理論值的比率。

    樣本回收率范圍(%)平均回收率(%)
    serum(n=5)87-10197
    EDTA plasma(n=5)97-105101
    heparin plasma(n=5)87-10193

    精密度

    精密度用樣品測(cè)定值的變異系數(shù)CV表示。CV(%) = SD/mean×100
    批內(nèi)差:取同批次試劑盒對(duì)低、中、高值定值樣本進(jìn)行定量檢測(cè),每份樣本連續(xù)測(cè)定20 次,分別計(jì)算不同濃度樣本的平均值及SD值。
    批間差:選取3個(gè)不同批次的試劑盒分別對(duì)低、中、高值定值樣本進(jìn)行定量測(cè)定,每個(gè)樣本使用同一試劑盒重復(fù)測(cè)定8次,分別計(jì)算不同濃度樣本的平均值及SD值。
    批內(nèi)差: CV<10%
    批間差: CV<12%

    線性

    在定值血清及血漿樣本內(nèi)加入適量的層粘連蛋白(LN),并倍比稀釋成1:2,1:4,1:8,1:16的待測(cè)樣本,線性范圍即為稀釋后樣本中層粘連蛋白(LN)含量的測(cè)定值與理論值的比率。

    樣本1:21:41:81:16
    serum(n=5)95-105%95-103%83-105%80-95%
    EDTA plasma(n=5)84-103%84-102%88-95%96-105%
    heparin plasma(n=5)85-101%92-101%93-102%98-105%

    穩(wěn)定性

    經(jīng)測(cè)定,試劑盒在有效期內(nèi)按推薦溫度保存,其活性降低率小于5%。
    為減小外部因素對(duì)試劑盒破壞前后檢測(cè)值的影響,實(shí)驗(yàn)室的環(huán)境條件需盡量保持一致,尤其是實(shí)驗(yàn)室內(nèi)溫度、濕度及溫育條件。其次由同一實(shí)驗(yàn)員來(lái)進(jìn)行操作可減少人為誤差。

    實(shí)驗(yàn)流程

    1. 實(shí)驗(yàn)前標(biāo)準(zhǔn)品、試劑及樣本的準(zhǔn)備;
    2. 加樣(標(biāo)準(zhǔn)品及樣本)100µL,37°C孵育1小時(shí);
    3. 吸棄,加檢測(cè)溶液A100µL,37°C孵育1小時(shí);
    4. 洗板3次;
    5. 加檢測(cè)溶液B100µL,37°C孵育30分鐘;
    6. 洗板5次;
    7. 加TMB底物90µL,37°C孵育10-20分鐘;
    8. 加終止液50µL,立即450nm讀數(shù)。

    實(shí)驗(yàn)原理

    將層粘連蛋白(LN)抗體包被于96孔微孔板中,制成固相載體,向微孔中分別加入標(biāo)準(zhǔn)品或標(biāo)本,其中的層粘連蛋白(LN)與連接于固相載體上的抗體結(jié)合,然后加入生物素化的層粘連蛋白(LN)抗體,將未結(jié)合的生物素化抗體洗凈后,加入HRP標(biāo)記的親和素,再次徹底洗滌后加入TMB底物顯色。TMB在過(guò)氧化物酶的催化下轉(zhuǎn)化成藍(lán)色,并在酸的作用下轉(zhuǎn)化成最終的黃色。顏色的深淺和樣品中的層粘連蛋白(LN)呈正相關(guān)。用酶標(biāo)儀在450nm波長(zhǎng)下測(cè)定吸光度(O.D.值),計(jì)算樣品濃度。

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    參考文獻(xiàn)

    雜志參考文獻(xiàn)
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    Asian Pacific Journal of Cancer PreventionModulatory Effects of Chemoradiation on Angiogenic Factors and Laminin in Cervical Cancer: Link with Treatment Response[pubmed:29172262]
    DiabetesCoordination Among Lipid Droplets, Peroxisomes and Mitochondria Regulates Energy Expenditure Through the CIDE-ATGL-PPARα Pathway in Adipocytes[Pubmed:29986925]
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    Experimental Lung ResearchHigh amplitude stretching of ATII cells and fibroblasts results in profibrotic effects[Pubmed: 31290711]
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    Untersuchungen und semiquantitative Symmetrie-Analysen zur Extrazellul?rmatrix von Kalbs-Stimmlippen[]
    ARCHIV?EUROMEDICACLINICAL SIGNIFICANCE OF LAMININ AND ELASTINE LEVELS IN CHILDREN WITH UNDIFFERENTIATED CONNECTIVE TISSUE DISEASE[]