This study was conducted to evaluate the characteristics, treatment outcome and risk factors associated with 223 drug-resistant tuberculosis (DR-TB) cases in the State of Qatar. A descriptive records-based retrospective study was conducted on patients registered at Communicable Disease Centre (CDC), Qatar to all consecutive microbiologically confirmed tuberculosis cases for the period January 2010 - March 2015. Demographic, clinical data, drug-resistance pattern of isolated mycobacteria and treatment outcome was assessed for the patient who completed their treatment in Qatar. Of 3301 patients with positive M. tuberculosis culture were analyzed; 223 (6.7%) were resistant to at least one drug. The overall prevalence of multi-d rug resistant TB (MDR-TB) was 1.2% (n = 38) of patients. A former resident of Indian sub contents was the most common demographic characteristic observed (64.1%). The outcome of treatment was assessed for 85 resistant cases with follow-up after completion of treatment. Cure and relapse rates were 97.6%, and 2.4%, respectively. Drug-resistant TB in Qatar is influenced by migration where the patients were probably infected. Rapid sputum sampling performed in the early stages of the disease, patient isolation, and drug-susceptibility testing should be the standard of care.
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http://dx.doi.org/10.1080/19932820.2020.1744351 | DOI Listing |
BMJ Glob Health
January 2025
Unit of HIV and Tuberculosis, Institute of Tropical Medicine Department of Clinical Sciences, Antwerpen, Belgium.
Introduction: The WHO endorsed the Xpert MTB/RIF (Xpert) technique since 2011 as initial test to diagnose rifampicin-resistant tuberculosis (RR-TB). No systematic review has quantified the proportion of pretreatment attrition in RR-TB patients diagnosed with Xpert in high TB burden countries.Pretreatment attrition for RR-TB represents the gap between patients diagnosed and those who effectively started anti-TB treatment regardless of the reasons (which include pretreatment mortality (death of a diagnosed RR-TB patient before starting adequate treatment) and/or pretreatment loss to follow-up (PTLFU) (drop-out of a diagnosed RR-TB patient before initiation of anti-TB treatment).
View Article and Find Full Text PDFChemMedChem
January 2025
Charles University Faculty of Pharmacy in Hradec Kralove: Univerzita Karlova Farmaceuticka fakulta v Hradci Kralove, Dept. of pharmaceutical chemistry and pharmaceutical analysis, Ak. Heyrovskeho 1203/8, 50003, Hradec Kralove, Czech Republic, CZECHIA.
Tuberculosis remains a leading global health threat, exacerbated by the emergence of multi-drug-resistant strains. The search for novel therapeutic agents is critical in addressing this challenge. This review systematically summarizes the potential of oxadiazole derivatives as promising candidates in antimycobacterial drug discovery.
View Article and Find Full Text PDF3 Biotech
February 2025
Department of Life Sciences and Biotechnology, Chhatrapati Shahu Ji Maharaj University Kanpur, Kanpur, Uttar Pradesh India.
Tuberculosis (TB) is one of the leading causes of death in the world, despite being a preventable and curable disease. Irrespective of tremendous advancements in early detection and treatment, this disease still has high mortality rates. This is due to the development of antibiotic resistance, which significantly reduced the efficacy of antibiotics, rendering them useless against this bacterial infection.
View Article and Find Full Text PDFFront Microbiol
January 2025
National Institute for Research in Tuberculosis, Indian Council of Medical Research, Chennai, India.
Pyrazinamide (PZA) is a key first-line antituberculosis drug that plays an important role in eradicating persister (TB) bacilli and shortening the duration of tuberculosis treatment. However, PZA-resistance is on the rise, particularly among persons with multidrug-resistant (MDR) tuberculosis. This nationwide study was conducted to explore the prevalence of mutations conferring PZA resistance, catalogue mutation diversity, investigate the associations of PZA resistance with specific lineages, examine co-resistance to 13 first- and second-line drugs, and evaluate the diagnostic accuracy of sequencing A and D genes for predicting PZA resistance.
View Article and Find Full Text PDFBMC Health Serv Res
January 2025
HIV and Other Infectious Diseases Research Unit (HIDRU), South African Medical Research Council: CAPRISA-MRC HIV-TB Pathogenesis and Treatment Research Unit, Free State, South Africa.
Background: Despite advances in drug-resistant tuberculosis (DR-TB) diagnosis, treatment, and service delivery, individuals with DR-TB often face significant socioeconomic and psychosocial challenges due to limited resources. These challenges can hinder retention in care, undermining the progress made in DR-TB management. As a consequence, advances in DR-TB diagnostics and treatment have not resulted in DR-TB programs meeting the 75% treatment success targets set by the World Health Organization (WHO).
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