Molecular analysis of pyrazinamide resistance in Mycobacterium tuberculosis in Vietnam highlights the high rate of pyrazinamide resistance-associated mutations in clinical isolates

Molecular analysis of pyrazinamide resistance in Mycobacterium tuberculosis in Vietnam highlights the high rate of pyrazinamide resistance-associated mutations in clinical isolates Emerging Microbes &Infections 6, e86 (October 2017). doi:10.1038/emi.2017.73 Authors: Nguyen Quang Huy, Contamin Lucie, Tran Thi Thanh Hoa, Nguyen Van Hung, Nguyen Thi Ngoc Lan, Nguyen Thai Son, Nguyen Viet Nhung, Dang Duc Anh, Bañuls Anne-Laure &Nguyen Thi Van Anh
Source: Emerging Microbes and Infections - Category: Infectious Diseases Authors: Tags: MIRU-VNTR multidrug resistance pncA mutation pyrazinamide resistance Mycobacterium tuberculosis family sequencing spoligotyping Source Type: research

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han Wouters Mycobacterium tuberculosis is still the deadliest bacterial pathogen worldwide and the increasing number of multidrug-resistant tuberculosis cases further complicates this global health issue. M. tuberculosis phosphoserine phosphatase SerB2 is a promising target for drug design. Besides being a key essential metabolic enzyme of the pathogen’s serine pathway, it appears to be involved in immune evasion mechanisms. In this work, a malachite green-based phosphatase assay has been used to screen 122 compounds from an internal chemolibrary. Trisubstituted harmine derivatives were found among the best h...
Source: Molecules - Category: Chemistry Authors: Tags: Article Source Type: research
We examined outcomes and safety in those who received a bedaquiline-based regimen (n=82) compared to those who received a bedaquiline–delamanid combination regimen (n=40). There was no significant difference in 6-month culture conversion (92.5% versus 81.8%; p=0.26) and 18-month favourable outcome rate (63.4% versus 67.5%; p=0.66) in the bedaquiline versus the bedaquiline–delamanid combination group, despite the latter having more advanced drug resistance (3.7% versus 22.5% resistant to at least five drugs; p=0.001) and higher pre-treatment failure rates (12.2% versus 52.5% with pre-treatment multidrug-resistan...
Source: European Respiratory Journal - Category: Respiratory Medicine Authors: Tags: Respiratory infections and tuberculosis Original Articles: Tuberculosis Source Type: research
ConclusionResistance to INH and RIF was observed at levels similar to those published nationwide, with rates of MDR-TB being somewhat lower. Rates of HIV/TB co-infection have decreased considerably between 2012 and 2016.
Source: Journal of Global Antimicrobial Resistance - Category: Infectious Diseases Source Type: research
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Source: Protein Science - Category: Biochemistry Authors: Tags: Article Source Type: research
Abstract International policy for treatment of multidrug- and rifampin-resistant tuberculosis (MDR/RR TB) relies largely on individual patient data (IPD) from observational studies of patients treated under routine conditions. We prepared guidance on which data to collect and what measures could improve consistency and utility for future evidence-based recommendations. We highlight critical stages in data collection at which improvements to uniformity, accuracy, and completeness could add value to IPD quality. Through a repetitive development process, we suggest essential patient- and treatment-related characteris...
Source: Emerging Infectious Diseases - Category: Infectious Diseases Authors: Tags: Emerg Infect Dis Source Type: research
CONCLUSION: This report describes high MTB and MDR-TB prevalence rates among symptomatic military patients with military personnel having higher odds of MTB infection compared to the civilian patients in the study. Since DSSM (ZN) sensitivity greatly varied depending on MTB load, the Xpert MTB/RIF should be used as a first-line diagnostic tool to identify MTB and detect rifampin resistance among presumptive TB cases instead of DSSM (ZN) microscopy. PMID: 31915831 [PubMed - as supplied by publisher]
Source: Military Medicine - Category: International Medicine & Public Health Tags: Mil Med Source Type: research
J. R. Campbell et al.
Source: Emerging Infectious Diseases Journal - Category: Infectious Diseases Source Type: research
Conclusions: Mutations in QRDR(s) were concomitantly associated with Beijing and non-Beijing genotypes. The prevalence of resistance and cross-resistance between LVX and MXF in MTB isolates from southern China was immensely higher than other countries. Our valuable findings provide the substantial implications to improve the reliability of genotypic diagnostic tests relying on potential resistance conferring mutations in entire gyr genes. PMID: 31903250 [PubMed]
Source: Journal of Thoracic Disease - Category: Respiratory Medicine Tags: J Thorac Dis Source Type: research
This study gives a general overview of drug resistant strains and the circulating strains in the Eastern Cape, South Africa and it shows that the common Mycobacteria in the province is the Beijing strain. PMID: 31923728 [PubMed - as supplied by publisher]
Source: Infection, Genetics and Evolution - Category: Genetics & Stem Cells Authors: Tags: Infect Genet Evol Source Type: research
Abstract Patients with multidrug-resistant tuberculosis (MDR-TB) tend to have a long course of anti-TB treatment and severe side effects. Traditional Chinese Medicine (TCM) has a synergistic effect in attenuation of MDR-TB. However, the lack of objective biological standards to classify and diagnose MDR-TB TCM syndromes could result in less effective TCM treatment. Therefore, in this study, we identified differentially expressed proteins (DEPs) in serum of individuals with MDR-TB TCM syndromes by applying isobaric tags for relative and absolute quantification coupled with two-dimensional liquid chromatography-tand...
Source: Anatomical Record - Category: Anatomy Authors: Tags: Anat Rec (Hoboken) Source Type: research
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