中华检验医学杂志
中華檢驗醫學雜誌
중화검험의학잡지
CHINESE JOURNAL OF LABORATORY MEDICINE
2014年
11期
842-846
,共5页
康可人%李凯%黄绮玲%曹东林%刘品明%钱锦%王继华
康可人%李凱%黃綺玲%曹東林%劉品明%錢錦%王繼華
강가인%리개%황기령%조동림%류품명%전금%왕계화
肽碎片%利钠肽,脑%免疫层析法%心力衰竭%荧光
肽碎片%利鈉肽,腦%免疫層析法%心力衰竭%熒光
태쇄편%리납태,뇌%면역층석법%심력쇠갈%형광
Peptide fragments%Natriuretic peptide,brain%Immunochromatography%Heart failure%Fluorescence
目的:建立适用于POCT的人血清N末端B型钠尿肽原(NT-proBNP)荧光定量检测方法。方法采用免疫荧光双抗体夹心法,研制快速定量检测人血清中NT-proBNP的免疫层析检测试剂盒;通过检测线性、精密度、准确度、特异性、稳定性等指标进行试剂盒的实验室性能评估;并选取2013年2月至2014年4月广东省第二人民医院、中山大学孙逸仙纪念医院和郑州市儿童医院疑似心血管疾病患者1056例(男性605例,女性451例),采集其血清标本,通过研制试剂与参比试剂的多中心、平行比对研究进行试剂盒临床应用评估。采用相关分析、线性回归、受试者工作特征( ROC)曲线分析、阴/阳性符合率统计学方法对数据进行统计分析。结果 NT-proBNP定量试剂报告范围为18~35000 ng/L;试剂在重复检测低、中、高3个浓度校准品的变异系数( CV)小于15%,偏倚小于20%;标本中常见干扰物胆红素、甘油三酯、胆固醇在所测定的浓度下,测试结果的CV值可控制在15%以内,对NT-proBNP定量检测无明显影响;14个月内检测不同浓度的NT-proBNP校准品,偏倚可以控制在±20%以内,试剂有效期大于12个月;在临床样本的检测中,本试剂盒与参比试剂产品有较好的相关性(Y研制=1.0489X参比+121.54,R2=0.9566,n=1056),并且对临床血清标本定量结果的偏差无统计学意义( Z=0.88,P=0.379>0.05);研制的NT-proBNP检测结果以参考试剂结果为标准进行比对,在2个不同cut-off 值(300和450 ng/L )下的 ROC 曲线下面积分别为0.981和0.978。结论本研究建立的NT-proBNP免疫荧光定量层析检测方法及相应的试剂,在各项指标的评估中均达到临床检测的要求,可用于血清NT-proBNP 指标的快速检测。
目的:建立適用于POCT的人血清N末耑B型鈉尿肽原(NT-proBNP)熒光定量檢測方法。方法採用免疫熒光雙抗體夾心法,研製快速定量檢測人血清中NT-proBNP的免疫層析檢測試劑盒;通過檢測線性、精密度、準確度、特異性、穩定性等指標進行試劑盒的實驗室性能評估;併選取2013年2月至2014年4月廣東省第二人民醫院、中山大學孫逸仙紀唸醫院和鄭州市兒童醫院疑似心血管疾病患者1056例(男性605例,女性451例),採集其血清標本,通過研製試劑與參比試劑的多中心、平行比對研究進行試劑盒臨床應用評估。採用相關分析、線性迴歸、受試者工作特徵( ROC)麯線分析、陰/暘性符閤率統計學方法對數據進行統計分析。結果 NT-proBNP定量試劑報告範圍為18~35000 ng/L;試劑在重複檢測低、中、高3箇濃度校準品的變異繫數( CV)小于15%,偏倚小于20%;標本中常見榦擾物膽紅素、甘油三酯、膽固醇在所測定的濃度下,測試結果的CV值可控製在15%以內,對NT-proBNP定量檢測無明顯影響;14箇月內檢測不同濃度的NT-proBNP校準品,偏倚可以控製在±20%以內,試劑有效期大于12箇月;在臨床樣本的檢測中,本試劑盒與參比試劑產品有較好的相關性(Y研製=1.0489X參比+121.54,R2=0.9566,n=1056),併且對臨床血清標本定量結果的偏差無統計學意義( Z=0.88,P=0.379>0.05);研製的NT-proBNP檢測結果以參攷試劑結果為標準進行比對,在2箇不同cut-off 值(300和450 ng/L )下的 ROC 麯線下麵積分彆為0.981和0.978。結論本研究建立的NT-proBNP免疫熒光定量層析檢測方法及相應的試劑,在各項指標的評估中均達到臨床檢測的要求,可用于血清NT-proBNP 指標的快速檢測。
목적:건립괄용우POCT적인혈청N말단B형납뇨태원(NT-proBNP)형광정량검측방법。방법채용면역형광쌍항체협심법,연제쾌속정량검측인혈청중NT-proBNP적면역층석검측시제합;통과검측선성、정밀도、준학도、특이성、은정성등지표진행시제합적실험실성능평고;병선취2013년2월지2014년4월광동성제이인민의원、중산대학손일선기념의원화정주시인동의원의사심혈관질병환자1056례(남성605례,녀성451례),채집기혈청표본,통과연제시제여삼비시제적다중심、평행비대연구진행시제합림상응용평고。채용상관분석、선성회귀、수시자공작특정( ROC)곡선분석、음/양성부합솔통계학방법대수거진행통계분석。결과 NT-proBNP정량시제보고범위위18~35000 ng/L;시제재중복검측저、중、고3개농도교준품적변이계수( CV)소우15%,편의소우20%;표본중상견간우물담홍소、감유삼지、담고순재소측정적농도하,측시결과적CV치가공제재15%이내,대NT-proBNP정량검측무명현영향;14개월내검측불동농도적NT-proBNP교준품,편의가이공제재±20%이내,시제유효기대우12개월;재림상양본적검측중,본시제합여삼비시제산품유교호적상관성(Y연제=1.0489X삼비+121.54,R2=0.9566,n=1056),병차대림상혈청표본정량결과적편차무통계학의의( Z=0.88,P=0.379>0.05);연제적NT-proBNP검측결과이삼고시제결과위표준진행비대,재2개불동cut-off 치(300화450 ng/L )하적 ROC 곡선하면적분별위0.981화0.978。결론본연구건립적NT-proBNP면역형광정량층석검측방법급상응적시제,재각항지표적평고중균체도림상검측적요구,가용우혈청NT-proBNP 지표적쾌속검측。
Objective To develop a rapid quantitative detecting assay for point-of-care testing ( POCT ) of N-terminal pro-brain natriuretic peptide ( NT-proBNP ) in serum by the fluorescence immunochromatographic technology.Methods Applying double-antibody sandwich assay to establish the quantitative NT-proBNP kit.The performance of quantitative NT-proBNP kit was evaluated by the sensitivity , specificity, accuracy, precision, stability and clinical effectiveness.It compared the research kit and conference kit by the parallel experience in the 1 056(605 males, 451 females)serum specimen collected from Guangdong Provincial People′s Hospital, Sun Yat-sen Memorial Hospital and Children′s Hospital of Zhengzhou between February 2013 to April 2014.Statistical significance of the results was assessed by correlation analysis , linear regression , receive operating characteristic ( ROC) curve analysis , negative and positive consistent.Results The report range of the NT-proBNP kit was 18-35 000 ng/L.The coefficient of variation ( CV) values for low , median and high concentration calibrators respectively were all less than 15%.Common interfering substances in human serum specimens such as bilirubin , triglyceride and cholesterol were found no significant affect on NT-proBNP antigen detection and the CV were no more than 15%.According to the results of detection for calibrators , the shelf time of the NT-proBNP diagnostic kit should be longer than 12 months.The NT-proBNP kit and reference kit had good correlation ( Y=1.048 9X developed reference +121.54, R2 =0.956 6, n=1 056) to detect the target protein through the parallel experiments and the deviation of the quantitative results of clinical serum samples showed no statistical significance (Z=0.88, P=0.379>0.05).The clinical assays of two different diagnostic kits showed good consistency based on the ROC curve evaluation which is compared by two cut-off values (300 and 450 ng/L).The areas under ROC curve were 0.981 and 0.978 respectively.Conclusions A novel NT-proBNP chromatographic quantitative immunofluorescence detection method was developed in this study .The performance evaluation data indicated that the kit is suitable for rapid detection of serum NT -proBNP.