background and objectives: resistance in mycobacterium tuberculosis is caused by mutations in genes encoding drug targets. investigators have already demonstrated the existence of mutations in codons 88 to 94 in the gyra gene and also in codons 1400, 1401, and 1483 of rrs gene among extensively and extremely drug resistant tuberculosis (xdr & xxdr-tb) strains. the aim of this study was to ident...

Background: Resistance of Mycobacterium Tuberculosis is a condition in which Anti-Tuberculosis (OAT) drugs are unable to kill the germs. One type resistance Multidrug Resistant Tuberculosis. (MDR-TB) TB caused by bacteria that resistant 2 types OAT, namely INH and Rifampin. The consequences if OAT deterioration health, increased costs, prolonged treatment, high rates therapy failure death.&#x0D...

background: mycobacterium tuberculosis lipid antigens take part in pathogenicity of the bacterium but the response of monocytes/macrophages to these antigens in tubercu-losis is not well known. objective: the aim of current investigation was to study the m. tuberculosis lipid antigens in tuberculosis pathogenesis. methods: in the present study m. tuberculosis lipid antigens were extracted. mono...

BACKGROUND AND AIMS Multidrug resistant tuberculosis (MDR-TB) poses problems in treatment, costs and treatment outcomes. It is not known if classically described risk factors for MDR-TB in other countries are the same in Mexico and the frequency of the association between diabetes mellitus (DM) and MDR-TB in our country is not clear. We undertook this study to analyze risk factors associated wi...

BACKGROUND Individualized treatment for multidrug-resistant (MDR) tuberculosis and extensively drug-resistant (XDR) tuberculosis depends upon reliable and valid drug susceptibility testing (DST) for pyrazinamide, ethambutol, and second-line tuberculosis drugs. However, the reliability of these tests is uncertain, due to unresolved methodological issues. We estimated the association of DST resul...

Background: Mycobacterium tuberculosis lipid antigens take part in pathogenicity of the bacterium but the response of monocytes/macrophages to these antigens in tubercu-losis is not well known. Objective: The aim of current investigation was to study the M. tuberculosis lipid antigens in tuberculosis pathogenesis. Methods: In the present study M. tuberculosis lipid antigens were extracted. Mono...

Multidrug-resistant tuberculosis (MDRTB), strains of Mycobacterium tuberculosis resistant to the first-line antituberculosis drugs rifampicin and isoniazid, is a global public health concern and remains a leading cause of mortality and morbidity in lowand middle-income countries [1]. In response, World Health Organization (WHO) member states have called for action to ‘‘achieve universal access ...

The emergence and spread of drug-resistant Mycobacterium tuberculosis (DR-TB) are critical global health issues. Eastern Europe has some of the highest incidences of DR-TB, particularly multidrug-resistant (MDR) and extensively drug-resistant (XDR) TB. To better understand the genetic composition and evolution of MDR- and XDR-TB in the region, we sequenced and analyzed the genomes of 138 M. tub...

Multidrug-resistant tuberculosis (MDR-TB) is a major public health problem because treatment is complicated, cure rates are well below those for drug susceptible tuberculosis (TB), and patients may remain infectious for months or years despite receiving the best available therapy. To gain a better understanding of MDR-TB, we characterized isolates recovered from 69 patients with MDR-TB, by use ...

Tuberculosis (TB), caused by Mycobacterium tuberculosis is an infectious deadly disease and the treatment of which is one of the most severe challenges at the global level. Currently more than 20 chemical medications are described for the treatment of TB. Regardless of availability of several drugs to treat TB, the causative agent, M. tuberculosis is nowadays getting resistant toward the conven...