Mycobacterium tuberculosis strains that are resistant to an increasing number of second-line drugs used to treat multidrug-resistant tuberculosis (MDR TB) are becoming a threat to public health worldwide. We surveyed the Network of Supranational Reference Laboratories for M. tuberculosis isolates that were resistant to second-line anti-TB drugs during 2000-2004. We defined extensively drug-resistant TB (XDR TB) as MDR TB with further resistance to > or = 3 of the 6 classes of second-line drugs. Of 23 eligible laboratories, 14 (61%) contributed data on 17,690 isolates, which reflected drug susceptibility results from 48 countries. Of 3,520 (19.9%) MDR TB isolates, 347 (9.9%) met criteria for XDR TB. Further investigation of population-based trends and expanded efforts to prevent drug resistance and effectively treat patients with MDR TB are crucial for protection of public health and control of TB.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2725916 | PMC |
| http://dx.doi.org/10.3201/eid1303.061400 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Large-scale proteogenomics characterization of microproteins in Mycobacterium tuberculosis.
Sci Rep
December 2024
Centro de Pesquisas em Biologia Molecular e Funcional (CPBMF) and Instituto Nacional de Ciência e Tecnologia em Tuberculose (INCT-TB), Escola de Ciências da Saúde e da Vida, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Rio Grande do Sul, 90619-900, Brazil.
Tuberculosis remains a burden to this day, due to the rise of multi and extensively drug-resistant bacterial strains. The genome of Mycobacterium tuberculosis (Mtb) strain H37Rv underwent an annotation process that excluded small Open Reading Frames (smORFs), which encode a class of peptides and small proteins collectively known as microproteins. As a result, there is an overlooked part of its proteome that is a rich source of potentially essential, druggable molecular targets.
View Article and Find Full Text PDFMicrosatellites markers fostering the understanding of malaria parasite biology, epidemiology and population genetics.
Diagn Microbiol Infect Dis
December 2024
Department of Molecular Epidemiology, National Institute of Malaria Research, Sector-8, Dwarka, Delhi 110077, India. Electronic address:
Microsatellites, or simple sequence repeats (SSRs), are short tandemly repeated DNA sequences widely dispersed throughout the genome. Their high variability, co-dominant inheritance, and ease of detection make them valuable genetic markers, frequently used to study genetic diversity, population structure, and evolutionary processes. In the context of malaria research, particularly with Plasmodium falciparum (P.
View Article and Find Full Text PDFTwo New Diterpenoids Formed by Transannular Diels-Alder Cycloaddition from the Soft Coral , and Their Antibacterial and PPAR-β Agonist Activities.
Mar Drugs
December 2024
Shandong Laboratory of Yantai Drug Discovery, Bohai Rim Advanced Research Institute for Drug Discovery, Yantai 264117, China.
Two new cembrane-derived tricyclic diterpenes belonging to the sarcophytin family, namely 4-hydroxy-chatancin () and sarcotoroid (), together with two known related ones ( and ), were isolated from the soft coral collected off Ximao Island in the South China Sea. The structures of the new compounds were elucidated by extensive spectroscopic analysis, a quantum mechanical nuclear magnetic resonance (QM-NMR) method, a time-dependent density functional theory electronic circular dichroism (TDDFT-ECD) calculation, X-ray diffraction analysis, and comparison with the reported data in the literature. A plausible biosynthetic pathway of compounds - was proposed, involving undergoing a transannular Diels-Alder cycloaddition.
View Article and Find Full Text PDFMitigating Antibiotic Resistance: The Utilization of CRISPR Technology in Detection.
Biosensors (Basel)
December 2024
Key Laboratory of Microbiological Metrology, Measurement & Bio-product Quality Security, State Administration for Market Regulation, College of Life Science, China Jiliang University, Hangzhou 310018, China.
Antibiotics, celebrated as some of the most significant pharmaceutical breakthroughs in medical history, are capable of eliminating or inhibiting bacterial growth, offering a primary defense against a wide array of bacterial infections. However, the rise in antimicrobial resistance (AMR), driven by the widespread use of antibiotics, has evolved into a widespread and ominous threat to global public health. Thus, the creation of efficient methods for detecting resistance genes and antibiotics is imperative for ensuring food safety and safeguarding human health.
View Article and Find Full Text PDFSharing of alleles between and associated with extensive drug resistance in isolates from infants and poultry in the Peruvian Amazon.
mBio
December 2024
Division of Infectious Diseases and International Health, School of Medicine, University of Virginia, Charlottsville, Virginia, USA.
is a serious health threat because of the rapid progressive evolution of antimicrobial resistance and efficient transmission from zoonotic as well as human sources. Resistance to fluoroquinolones and macrolides is particularly concerning as this compromises the two most effective oral antibiotic agents currently available for human campylobacteriosis. Here, we report on the prevalence and worldwide distribution of the operon , which encodes an efflux pump conferring high levels of combined resistance to fluoroquinolones and macrolides in strains isolated from poultry ( = 75) and children ( = 177).
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!