Genetic analysis of the embB gene revealed mutations in 17 (68%) of 25 ethambutol (EMB) resistant isolates (M306I, M306V, M306L, Q497R) but also in 4 (20%) of 20 EMB-susceptible isolates of Mycobacterium tuberculosis, namely, an ATG-->ATM substitution resulting in M306I, G406N, and the novel alterations M423I and A659T.
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http://dx.doi.org/10.1128/AAC.48.11.4447-4449.2004 | DOI Listing |
J Clin Tuberc Other Mycobact Dis
December 2024
Laboratorio de Interacciones Hospedero-Patógeno/Unidad de Biología Molecular, Institut Pasteur de Montevideo, Montevideo, Uruguay.
Whole genome sequencing (WGS) is sensitive tool for the analysis of tuberculosis transmission and drug-resistance. We used WGS to analyze the evolution from isoniazid monoresistance to MDR/preXDR during a prolonged household outbreak. The outbreak started with a isoniazid resistant strain (katG S315T mutation) and evolve in two cases to pre-XDR phenotype (with mutations in katG, rpoB, embB, pncA and gyrA genes).
View Article and Find Full Text PDFBMC Genomics
November 2024
Clinical and Chemical Pathology, Faculty of Medicine, Cairo University, Cairo, Egypt.
Treatment of (Mab) infections is very challenging due to its intrinsic resistance to most available drugs. Therefore, it is crucial to discover novel anti-Mab drugs. In this study, we explored an intrinsic resistance mechanism through which Mab resists echinomycin (ECH).
View Article and Find Full Text PDFAm J Trop Med Hyg
July 2024
Amrita Center for Nanosciences and Molecular Medicine, Amrita Vishwa Vidyapeetham, Kochi, Kerala, India.
The rising prevalence of drug-resistant Mycobacterium tuberculosis (MTB) strains poses a significant challenge to global tuberculosis (TB) control efforts. This study aimed to analyze drug resistance patterns and investigate the molecular characteristics of 193 MTB clinical isolates to shed light on the mechanisms of drug resistance. Of the 193 MTB clinical isolates, 28.
View Article and Find Full Text PDFFront Microbiol
April 2024
National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China.
Background: Tuberculosis (TB), mainly caused by (), remains a serious public health problem. Increasing evidence supports that selective evolution is an important force affecting genomic determinants of phenotypes. It is necessary to further understand the selective evolution and identify the positively selected genes that probably drive the phenotype of .
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