Results 1 to 10 of about 8,860 (214)

Characterization of a Catalase-Peroxidase Variant (L333V-KatG) Identified in an INH-Resistant Mycobacterium tuberculosis Clinical Isolate

open access: yesBiochemistry and Biophysics Reports
Mycobacterium tuberculosis catalase-peroxidase (Mt-KatG) is a bifunctional heme-dependent enzyme that has been shown to activate isoniazid (INH), the widely used antibiotic against tuberculosis (TB).
Adelaida Díaz Vilchis   +2 more
exaly   +4 more sources

Immunogenicity assay of KatG protein from Mycobacterium tuberculosis in mice: preliminary screening of TB vaccine [PDF]

open access: yesThe Ukrainian Biochemical Journal, 2018
The tuberculosis (TB) disease is still widely found even though BCG vaccine given to many people. Ineffectiveness of the BCG vaccine is one of causes that make the difficulties in preventing TB transmission. Objective of the research was to determine the
P. Purkan   +4 more
doaj   +4 more sources

Two Novel katG Mutations Conferring Isoniazid Resistance in Mycobacterium tuberculosis [PDF]

open access: yesFrontiers in Microbiology, 2020
Tuberculosis (TB), an infectious disease caused by Mycobacterium tuberculosis, is among the top 10 leading causes of death worldwide. The treatment course for TB is challenging; it requires antibiotic administration for at least 6 months, and bacterial ...
Li-Yu Hsu   +13 more
doaj   +3 more sources

Drug-resistant Tuberculosis: First Line Drug Resistance Pattern among Mycobacterium Tuberculosis Strains Isolated from a Reference Laboratory in Kerala State, India

open access: yesJournal of Pure and Applied Microbiology, 2021
Resistance to antimycobacterial agents consistently remains a major obstacle to end TB in India. Geographical prevalence data regarding drug-resistant evolutionary genetics of M. tuberculosis (MTB) remains sparse in India. Our objective was to determine
Neetha S Murthy   +8 more
doaj   +1 more source

Isoniazid resistance-conferring mutations are associated with highly variable phenotypic resistance

open access: yesJournal of Clinical Tuberculosis and Other Mycobacterial Diseases, 2023
Background: High-dose isoniazid is recommended in the 9–12 months short-course regimen for multidrug-resistant tuberculosis with inhA mutation. However, there is insufficient evidence to support the assumption of genotypic-phenotypic concordance.
Senamile Lale Ngema   +9 more
doaj   +1 more source

Coordinated interaction between Lon protease and catalase-peroxidase regulates virulence and oxidative stress management during Salmonellosis

open access: yesGut Microbes, 2022
This study investigates the interplay between Lon protease and catalase-peroxidase (KatG) in relation to virulence modulation and the response to oxidative stress in Salmonella Typhimurium (ST).
Perumalraja Kirthika   +3 more
doaj   +1 more source

Frequency of Mutation katG S315T Mycobacterium Tuberculosis in Multi Drug Resistance Tuberculosis Patients in South Sumatera

open access: yesInternational Journal of Infectious Diseases, 2022
Purpose: Indonesia is ranked as the fifth highest case of MDR TB in the world. MDR TB occurs due to resistance to Rifampicin and INH drugs caused by mutations in the M.Tb gene.
A. Fathurrachman   +2 more
doaj   +1 more source

Pattern of InhA and KatG mutations in isoniazid monoresistant Mycobacterium tuberculosis isolates

open access: yesLung India, 2020
Aims and Objectives: The aim of the study is to detect the pattern of genetic mutation, i.e., Inh A or Kat G or both (Inh A and kat G) in isoniazid (INH) monoresistant mycobacteria and to correlate with the pattern in multidrug-resistant (MDR) isolates ...
Ashok Singh Charan   +6 more
doaj   +1 more source

Mutation of katG in a clinical isolate of Mycobacterium tuberculosis: effects on catalase-peroxidase for isoniazid activation [PDF]

open access: yesThe Ukrainian Biochemical Journal, 2016
Mutations in katG gene are often associated with isoniazid (INH) resistance in Mycobacterium tuberculosis strain. This research was perfomed to identify the katG mutation in clinical isolate (L8) that is resistant to INH at 1 μg/ml.
Purkan,   +5 more
doaj   +1 more source

Importance of Detection of Isoniazid and Rifampicin Mono Drug Resistance and Determining Rate of MDR-TB in Smear Positive Sputum Samples from a Tertiary Care Hospital of West U.P. India

open access: yesJournal of Pure and Applied Microbiology, 2019
Anti-tubercular therapy is one of the effective strategies used to control tuberculosis, so, a planned and accurate treatment regimen is of utmost importance, but number of cases are being treated as MDR on the basis of rifampicin mono resistance.
Sana Nudrat, Umar Farooq, Mazhar Maqsood
doaj   +1 more source

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