Objective: The Rifampicin resistance and susceptibility of Mycobacterium tuberculosis are caused by mutations in the 81-base pair region of the rpoB gene encoding the b-subunit of RNA polymerase. Methods: Isoniazid resistance of M. tuberculosis is related to mutations in inha , oxyR and ahpC genes which 30 to 90 percent of Isoniazid resistance is occurred in 3015 codons of kat...

three tuberculous, twenty-one non-tuberculous mycobacterial (ntm) reference strains and seventy two isolates classified by biochemical tests were shown to produce specific sets of dna fragments in a polymerase chain reaction with single universal primer (up-pcr). a rather wide limit of tolerance for variations in procedure of pcr mixture preparation and thermocycling parameters was found. there...

a 25-year-old female presented to the infertility opd with complaints of secondary infertility and pain lower abdomen with watery discharge for the past five days. she had history of undergoing hysterosalpingography in a private hospital ten days back. the interventions included drainage of pyometra, endometrial biopsy for routine and afb smear/ culture,  confirmation of diagnosis by m rna-base...

background nucleic acid based detection of mycobacterium tuberculosis has the potential to improve the analysis of the tuberculosis epidemiology and patient care by increasing the specificity and sensitivity of diagnosis. patients and methods fifty suspected cases were screened for m. tuberculosis by using a new primer sequence and comparing its results with the primer (is6110) most widely used...

Mycobacterium tuberculosis H37Ra is an attenuated tubercle bacillus closely related to the virulent type strain M. tuberculosis H37Rv. Despite extensive study, the reason for the decreased virulence of M. tuberculosis H37Ra has not been determined. A genomic approach was therefore initiated to identify genetic differences between M. tuberculosis H37Rv and M. tuberculosis H37Ra as a means of pin...

introduction mycobacterium tuberculosis complex (mtbc) are causative agents of human and animal tuberculosis.differentiation of mtbc members is required for appropriate treatment of individual patients and for epidemiologicalpurposes and reduction in drug resistances. material and methods 1345 patients were collected with clinical suspicions of tuberculosis who referred to the health care cente...

Control of Mycobacterium tuberculosis infection requires CD4 T-cell responses and major histocompatibility complex class II (MHC-II) processing of M. tuberculosis antigens (Ags). We have previously demonstrated that macrophages process heat-killed (HK) M. tuberculosis more efficiently than live M. tuberculosis. These observations suggested that live M. tuberculosis may inhibit Ag processing by ...

objective(s): the periodic binding of protein expressed by mycobacterium tuberculosis h37rv with the host cell receptor molecules i.e. fibronectin (fn) is gaining significance because of its adhesive properties.  the genome sequencing of m. tuberculosis h37rv revealed that the proline-glutamic (pe) proteins contain polymorphic gc-rich repetitive sequences (pgrs) which have clinical importance i...

conclusions the results of the current study showed a high rate of co-infection of m. tuberculosis and p. jirovecii in the iranian patients with hiv. as the immune system condition worsened, the probability of occurrence of pneumocystis pneumonia (pcp) increased. therefore, more specific, most rapid and sensitive tests should be utilized for diagnosis of pcp in this group of patients. results a...