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肺泡灌洗液噬菌体裂解法检测肺结核诊断价值研究
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摘要
目的:探讨肺泡灌洗液(BALF)噬菌体裂解法(PhaB)快速检测结核分枝杆菌的临床应用价值。
     方法:30例肺结核患者及30例非肺结核患者(其中肺癌12例、肺炎5例、慢性阻塞性疾病13例)肺泡灌洗液标本进行噬菌体裂解法实验,并与其他肺结核检查方法(痰涂片抗酸染色、痰罗氏培养法、肺泡灌洗液涂片抗酸染色、肺泡灌洗液罗氏培养法、PPD、TB-AB)对照。
     结果:30例肺结核患者肺泡灌洗液噬菌体裂解法阳性18例,阴性12例;肺泡灌洗液抗酸染色法阳性9例,阴性21例;肺泡灌洗液结核菌培养法阳性20例,阴性10例;痰涂片抗酸染色法阳性6例,阴性24例;痰结核菌培养法阳性11例,阴性19例。30例非肺结核患者PPD试验及结核抗体(TB-AB)检测假阳性例数分别为10例及7例,而肺泡灌洗液噬菌体裂解法、肺泡灌洗液涂片抗酸染色、肺泡灌洗液罗氏培养法、痰抗酸染色及培养法假阳性例数均为0例;肺泡灌洗液噬菌体裂解法敏感性60.0%,与痰抗酸染色、痰罗氏培养法、肺泡灌洗液涂片抗酸染色相比较,差异有显著意义(三者均P<0.05);与肺泡灌洗液罗氏培养法相比较,差异无显著意义(P>0.05);其特异性为100%,高于PPD试验及结核抗体检测;此法阳性预测值为100%,阴性预测值为96.8%。
     结论:肺泡灌洗液噬菌体裂解法检测结核分枝杆菌快速、简便,可作为结核病诊断的重要方法。
0bjective:To explore the value of phage–based splitting assay(PhaB) in fast dectection of mycobacterium tuberculosis (MTB) in bronchoalverolar lavage fluid (BALF).
     Methods : The BALF from 30 pulmonary tuberculosis patients and 30 non-tuberculosis patients (including the lung cancer 12 cases、pneumonia 5 cases、chronic obstructive pulmonary disease 13 cases) were dectected by phage–based splitting assay, and the test results were compared with that of other examinatinos (BALF acid-fast stain, BALF culture, acid-fast stain, sputum culture,BCG-ppd 5IU skin test and Blood TB-Ab).
     Results:Amony 30 pulmonary tuberculosis patients,18 cases were positive by BALF PhaB, and 12 cases were negative;9 cases were positive by BALF acid-fast stain , and 21 cases were negative;20 cases were positive by BALF culture , and 10 cases were negative;6 cases were positive by sputum acid-fast stain , and 24 cases were negative;11 cases were positive by sputum culture , and 19 cases were negative。Amony 30 non-tuberculosis patients ,10 cases were positive by PPD, 7 cases were positive by TB-AB,none was positive by BALF PhaB, BALF acid-fast stain, BALF culture, acid-fast stain and sputum culture.The sensitivity of phage–based splitting assay was 60.0%, compared with that of sputum acid-fast stain, sputum culture and BALF acid-fast stain, there extisted high significative meaning(P<0.05). Compared with that of BALF culture, it has not significative meaning(P>0.05).The specificity was 100%, and it was significantly higher than that of BCG-ppd 5IU skin test or Blood TB-Ab.The postive and negative predicitive rate were 100%, 96.8% respectively.
     Conclusion:BALF- Phage–based splitting assay is a fast conventient method for dectecting MTB in BALF, and it can be used as an important dignostic method for TB.
引文
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