scholarly journals MYCOBACTERİUM TUBERCULOSİS KOMPLEKSİ KLİNİK İZOLATLARINDA İZONİAZİD VE RİFAMPİSİN DİRENCİNİN HIZLI TANISI İÇİN ‘REVERSE BLOT HYBRIDIZATION ASSAY MYCOBACTERIUM TUBERCULOSIS DRUG RESISTANCE’ YÖNTEMİNİN ETKİNLİĞİNİN ARAŞTIRILMASI

Author(s):  
TUBA ÖZTÜRK ◽  
Buket ARIDOĞAN ◽  
Emel SESLİ ÇETİN
2019 ◽  
Vol 46 (10) ◽  
pp. 917-921 ◽  
Author(s):  
Hanil Lee ◽  
Minseob Eom ◽  
Sang‐Ha Kim ◽  
Hye‐Young Wang ◽  
Hyeyoung Lee ◽  
...  

1999 ◽  
Vol 79 (6) ◽  
pp. 343-348 ◽  
Author(s):  
T.C. Victor ◽  
A.M. Jordaan ◽  
A. van Rie ◽  
G.D. van der Spuy ◽  
M. Richardson ◽  
...  

Author(s):  
Deepa Parwani ◽  
Sushanta Bhattacharya ◽  
Akash Rathore ◽  
Chaitali Mallick ◽  
Vivek Asati ◽  
...  

: Tuberculosis is a disease caused by Mycobacterium tuberculosis (Mtb), affecting millions of people worldwide. The emergence of drug resistance is a major problem in the successful treatment of tuberculosis. Due to the commencement of MDR-TB (multi-drug resistance) and XDR-TB (extensively drug resistance), there is a crucial need for the development of novel anti-tubercular agents with improved characteristics such as low toxicity, enhanced inhibitory activity and short duration of treatment. In this direction, various heterocyclic compounds have been synthesized and screened against Mycobacterium tuberculosis. Among them, benzimidazole and imidazole containing derivatives found to have potential anti-tubercular activity. The present review focuses on various imidazole and benzimidazole derivatives (from 2015-2019) with their structure activity relationships in the treatment of tuberculosis.


Microbiology ◽  
2004 ◽  
Vol 150 (4) ◽  
pp. 967-978 ◽  
Author(s):  
C. Viana-Niero ◽  
P. E. de Haas ◽  
D. van Soolingen ◽  
S. C. Leão

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 of M. tuberculosis, Mycobacterium africanum and ‘Mycobacterium canettii’. Genetic polymorphisms were examined by PCR, Southern blot hybridization, sequence analysis and RT-PCR. Seven M. tuberculosis isolates contain insertions of IS6110 elements within plcA, plcC or plcD. In 19 of 25 M. tuberculosis isolates examined, genomic deletions were identified, resulting in loss of parts of genes or complete genes from the plcABC and/or plcD loci. Partial plcD deletion was observed in one M. africanum isolate. In each case, deletions were associated with the presence of a copy of the IS6110 element and in all occurrences IS6110 was transposed in the same orientation. A mechanism of deletion resulting from homologous recombination of two copies of IS6110 was recognized in a group of genetically related M. tuberculosis isolates. Five M. tuberculosis isolates presented major polymorphisms in the plcABC and plcD regions, along with loss of expression competence that affected all four plc genes. Phospholipase C is a well-known bacterial virulence factor. The precise role of phospholipase C in the pathogenicity of M. tuberculosis is unknown, but considering the potential importance that the plc genes may have in the virulence of the tubercle bacillus, the study of isolates cultured from patients with active tuberculosis bearing genetic variations affecting these genes may provide insights into the significance of phospholipase C enzymes for tuberculosis pathogenicity.


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