tuberculosis is one of the most important infectious diseases and a major cause of morbidity and mortality in developing countries. multi drug resistant tuberculosis is a new threat, which can result in a high case fatality rate. this study was conducted to define the incidence of multidrug resistant tuberculosis in kermanshah. ­antibiogram was performed on­­ pcr-confirmed isolates of mycobacte...

A random sample survey of initial drug resistance among cases of tuberculosis in Latin America was carried out during the second half of the 1980s and the early 1990s. A total of 948 cultures of Mycobacterium tuberculosis isolated from patients presumed never before to have been treated for tuberculosis were collected from 30 randomly selected clusters in Latin America and tested for resistance...

TO THE EDITOR—We read with interest the paper by Narendran and colleagues [1]. The authors suggest that human immunodeficiency virus (HIV)–infected patients who receive thrice-weekly antituberculosis therapy are at higher risk of acquired rifampicin resistance compared with HIVuninfected patients, despite the use of combination antiretroviral therapy. We emphasize the need for studies that inve...

A genotypic method for predicting rifampicin resistance in Mycobacterium leprae has been developed and rigorously tested on mouse footpad-derived and clinical specimens. A series of immobilized oligonucleotide capture probes can discriminate between wild type and mutant rpoB alleles, and positive controls are available for the most frequent mutation affecting Ser425. Two different non-radioacti...

INTRODUCTION: This study aimed to evaluate a new commercial kit, Kit SIRE Nitratase-PlastLabor, for testing the drug susceptibility of clinical Mycobacterium tuberculosis isolates. METHODS: The accuracy of the Kit SIRE Nitratase was evaluated by examining the susceptibility (streptomycin, isoniazid, rifampicin, and ethambutol) of 40 M. tuberculosis isolates, using the proportion method with L...

OBJECTIVE To study the performance of three rapid low cost methods for the detection of rifampicin resistance. METHODS A panel of 20 coded Mycobacterium tuberculosis strains was tested blindly by the low cost methods: nitrate reductase, MTT and resazurin assays, and compared with the results obtained with the gold standard methods: the proportion method on Löwenstein-Jensen medium and the BAC...

In-vitro susceptibility of 299 Neisseria meningitidis and 157 Streptococcus pneumoniae strains from meningitis patients in The Netherlands in 1993 and 1994 to meropenem was determined using the Etest. Susceptibility to penicillin, ceftriaxone, and chloramphenicol was also determined. Rifampicin susceptibility was additionally tested for N. meningitidis. Of the meningococci, 4.3% were of interme...

Introduction: Among the first line drugs used for treatment of Drug Sensitive Tuberculosis, Rifampicin plays a crucial role. Hence it is important to know resistance using molecular technologies like CBNAAT and probe Assay. However, diagnostic dilemma occurs when there discordance in result rifampicin at periphery higher laboratories Intermediate Reference Laboratory (IRL). Aims objectives: To ...

BACKGROUND Rifampicin is the major drug in the treatment of leprosy. The rifampicin resistance of Mycobacterium leprae results from a mutation in the rpoB gene, encoding the β subunit of RNA polymerase. As M. leprae is a non-cultivable organism observation of its growth using mouse food-pad (MFP) is the only Gold Standard assay used for confirmation of "in-vivo" drug resistance. OBJECTIVE Any...

BACKGROUND Multi-drug resistant tuberculosis (MDR-TB) is a major public health problem especially in developing countries. World Health Organization (WHO) recommends use of Xpert MTB/RIF assay to simultaneously detecting Mycobacterium tuberculosis (MTB) and rifampicin (RIF) resistance. The primary objective of this study was to determine the frequency of MDR-TB in patients suspected to have dru...