The standardized method to study the polymorphism of IS 6110 was used to characterize 53 isolates of Mycobacterium tuberculosis obtained during 1991-1992 from 14 regions in Colombia. In Valle region cluster rate was 25% (4/16). The mean number of IS6110 band was 10 +/- 3. Similarity between strains was of 60% in 81% of strains and this tended to be correlated with geographic origin. For the fir...

The sensitivity and specificity to detect Mycobacterium tuberculosis complex of four Real Time PCR primer-probe sets was compared. Three sets targeted nearly the same location on the IS6110 sequence and set 4 targeted a location 200 bp downstream on IS6110. Real Time PCR's with sets 1, 2 and 3 were carried out with co-amplification of a modified target as an internal amplification control. By t...

BACKGROUND Genotyping methods developed to survey the transmission dynamics of Mycobacterium tuberculosis currently rely on the interpretation of restriction and amplification profiles. Multispacer sequence typing (MST) genotyping is based on the sequencing of several intergenic regions selected after complete genome sequence analysis. It has been applied to various pathogens, but not to M. tub...

BACKGROUND & OBJECTIVES The conventional techniques used in TB diagnosis like AFB (acid fast bacilli) smear microscopy lack sensitivity and the gold standard, culture test takes time. A test based on multiplex polymerase chain reaction (PCR) targeting the 38 kDa gene and IS6110 insertion sequence, specific to Mycobacterium tuberculosis was developed to further increase the sensitivity of a TB-P...

BACKGROUND A high proportion of pigs imported to Serbia from a Lithuanian breeding herd reacted positively against avian and/or bovine tuberculin. The pigs were euthanized and lesions characteristic for mycobacterial infection were detected. An investigation of potential mycobacteriosis in the pigs imported to Serbia and the possible source of infection in the Lithuanian herd were therefore ini...

The Mycobacterium tuberculosis genome contains four highly related genes which present significant similarity to Pseudomonas aeruginosa genes encoding phospholipase C enzymes. Three of these genes, plcA, plcB and plcC, are organized in tandem (locus plcABC). The fourth gene, plcD, is located in a different region. This study investigates variations in plcABC and plcD genes in clinical isolates ...

BACKGROUND Takayasu's arteritis (TA) is a chronic inflammatory disease affecting the large arteries and their branches; its etiology is still unknown. In individuals suffering from TA, arterial inflammation progresses to stenosis and/or occlusion, leading to organ damage and affecting survival. Relation of TA with Mycobacterium tuberculosis has been known, but there have been only a few systema...

OBJECTIVE To analyze the situation of tuberculosis infection by DNA fingerprinting in the middle and eastern part of Osaka, Japan. DESIGN We performed IS6110 restriction fragment length polymorphism (RFLP) on 1200 isolates from tuberculosis patients who visited our hospital from January 2001 to December 2003. A cluster was defined as a series of isolates with more than 90% similarity by IS611...