Ramalingam Radhakrishnan, S Prabuseenivasan, S Hannah, V Vaishanavee, V Senthildevi, T Kannadhasan, R Suchithra, Priya Rajendran, Ponnuraja Chinnaiyan, Lavanya Jayabal, Asha Frederick, Sivakumar Shanmugam
{"title":"结核分枝杆菌对氟喹诺酮类和氨基糖苷类的基因型MTBDRsl 2型和表型耐药性检测。","authors":"Ramalingam Radhakrishnan, S Prabuseenivasan, S Hannah, V Vaishanavee, V Senthildevi, T Kannadhasan, R Suchithra, Priya Rajendran, Ponnuraja Chinnaiyan, Lavanya Jayabal, Asha Frederick, Sivakumar Shanmugam","doi":"10.4103/ijmy.ijmy_120_23","DOIUrl":null,"url":null,"abstract":"<p><strong>Background: </strong>Information on genotypic with comparison of phenotypic drug sensitivity test of anti-tuberculosis (TB) has been reported in several studies, which have variable results. The present study aimed to assess the Genotype MTBDRsl version 2.0/Line probe assay (LPA) for the detection of fluoroquinolones (FQ) and aminoglycosides (AMGs) resistance mutations among drug-resistant Mycobacterium TB (MTB) strains and also to compare the patterns of genotypic mutations of gyrA/B, rrs, and eis with mycobacteria growth indicator tube (MGIT 960).</p><p><strong>Methods: </strong>A total of 1416 samples were subjected to Genotype MTBDRsl version 2.0 assay. One hundred and twenty sputum smear positive MTB isolates and 37 sputum smear negative MTB isolates confirmed multiple drug resistance resistant to FQ and AMG by the Genotype MTBDRsl version 2.0 were subjected to phenotypic drug susceptibility testing (DST) were analyzed.</p><p><strong>Results: </strong>The association sensitivity, specificity, positive predictive value, negative predictive value, and accuracy for the resistance detection between MGIT (DST) and the Genotype MTBDRsl version 2.0 assay was significant (P < 0.01) of moxifloxacin (MFX) concentration. Sensitivity and specificity value for kanamycin (KAN) resistance was 76% and 89%; 47% and 94% for capreomycin (CAP); and 60% and 76% for low-level KAN, respectively.</p><p><strong>Conclusion: </strong>Our results indicate that MFX (0.25and 1 μg/mL), KAN (2.5 μg/mL), and CAP (2.5 μg/mL) significantly (P < 0.01) and support the World Health Organization guidance to test FQ and AMG by genotypic test.</p>","PeriodicalId":14133,"journal":{"name":"International Journal of Mycobacteriology","volume":"12 3","pages":"299-304"},"PeriodicalIF":1.6000,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Genotype MTBDRsl version 2 and phenotypic drug resistance detection of <i>Mycobacterium tuberculosis</i> for fluoroquinolones and aminoglycosides.\",\"authors\":\"Ramalingam Radhakrishnan, S Prabuseenivasan, S Hannah, V Vaishanavee, V Senthildevi, T Kannadhasan, R Suchithra, Priya Rajendran, Ponnuraja Chinnaiyan, Lavanya Jayabal, Asha Frederick, Sivakumar Shanmugam\",\"doi\":\"10.4103/ijmy.ijmy_120_23\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><strong>Background: </strong>Information on genotypic with comparison of phenotypic drug sensitivity test of anti-tuberculosis (TB) has been reported in several studies, which have variable results. The present study aimed to assess the Genotype MTBDRsl version 2.0/Line probe assay (LPA) for the detection of fluoroquinolones (FQ) and aminoglycosides (AMGs) resistance mutations among drug-resistant Mycobacterium TB (MTB) strains and also to compare the patterns of genotypic mutations of gyrA/B, rrs, and eis with mycobacteria growth indicator tube (MGIT 960).</p><p><strong>Methods: </strong>A total of 1416 samples were subjected to Genotype MTBDRsl version 2.0 assay. One hundred and twenty sputum smear positive MTB isolates and 37 sputum smear negative MTB isolates confirmed multiple drug resistance resistant to FQ and AMG by the Genotype MTBDRsl version 2.0 were subjected to phenotypic drug susceptibility testing (DST) were analyzed.</p><p><strong>Results: </strong>The association sensitivity, specificity, positive predictive value, negative predictive value, and accuracy for the resistance detection between MGIT (DST) and the Genotype MTBDRsl version 2.0 assay was significant (P < 0.01) of moxifloxacin (MFX) concentration. Sensitivity and specificity value for kanamycin (KAN) resistance was 76% and 89%; 47% and 94% for capreomycin (CAP); and 60% and 76% for low-level KAN, respectively.</p><p><strong>Conclusion: </strong>Our results indicate that MFX (0.25and 1 μg/mL), KAN (2.5 μg/mL), and CAP (2.5 μg/mL) significantly (P < 0.01) and support the World Health Organization guidance to test FQ and AMG by genotypic test.</p>\",\"PeriodicalId\":14133,\"journal\":{\"name\":\"International Journal of Mycobacteriology\",\"volume\":\"12 3\",\"pages\":\"299-304\"},\"PeriodicalIF\":1.6000,\"publicationDate\":\"2023-07-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"International Journal of Mycobacteriology\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.4103/ijmy.ijmy_120_23\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"INFECTIOUS DISEASES\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Mycobacteriology","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.4103/ijmy.ijmy_120_23","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"INFECTIOUS DISEASES","Score":null,"Total":0}
Genotype MTBDRsl version 2 and phenotypic drug resistance detection of Mycobacterium tuberculosis for fluoroquinolones and aminoglycosides.
Background: Information on genotypic with comparison of phenotypic drug sensitivity test of anti-tuberculosis (TB) has been reported in several studies, which have variable results. The present study aimed to assess the Genotype MTBDRsl version 2.0/Line probe assay (LPA) for the detection of fluoroquinolones (FQ) and aminoglycosides (AMGs) resistance mutations among drug-resistant Mycobacterium TB (MTB) strains and also to compare the patterns of genotypic mutations of gyrA/B, rrs, and eis with mycobacteria growth indicator tube (MGIT 960).
Methods: A total of 1416 samples were subjected to Genotype MTBDRsl version 2.0 assay. One hundred and twenty sputum smear positive MTB isolates and 37 sputum smear negative MTB isolates confirmed multiple drug resistance resistant to FQ and AMG by the Genotype MTBDRsl version 2.0 were subjected to phenotypic drug susceptibility testing (DST) were analyzed.
Results: The association sensitivity, specificity, positive predictive value, negative predictive value, and accuracy for the resistance detection between MGIT (DST) and the Genotype MTBDRsl version 2.0 assay was significant (P < 0.01) of moxifloxacin (MFX) concentration. Sensitivity and specificity value for kanamycin (KAN) resistance was 76% and 89%; 47% and 94% for capreomycin (CAP); and 60% and 76% for low-level KAN, respectively.
Conclusion: Our results indicate that MFX (0.25and 1 μg/mL), KAN (2.5 μg/mL), and CAP (2.5 μg/mL) significantly (P < 0.01) and support the World Health Organization guidance to test FQ and AMG by genotypic test.
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