Related Experiment Video
Updated: Jun 10, 2026

Demonstrating a Multi-drug Resistant Mycobacterium tuberculosis Amplification Microarray
Published on: April 25, 2014
[Correlation between ethambutol-resistance and embB gene mutation in Mycobacterium tuberculosis]
1Department of Immunology and Pathogen Biology, Medical School of Xi'an Jiaotong University, Xi'an 710061, China. liviy@163.com
Objective:
To analyze the characteristics of embB gene mutation in ethambutol-resistant Mycobacterium tuberculosis (M. TB) strains isolated from patients in Xi'an for establishing a rapid method to detect the mutation of embB gene in M. TB.
Methods:
The embB gene of 104 Mycobacterium tuberculosis isolates was detected by PCR-Single Strand Conformation Polymorphism (PCR-SSCP) and PCR-Restriction Fragment Length Polymorphism (PCR-RFLP).
Results:
Taking strain H37Rv as a control, the SSCP and RFLP profiles of embB of 35 drug-sensitive strains in 104 Mycobacterium tuberculosis isolates were normal. The display of SSCP profiles in 39 of 69 (56.52%) ethambutol-resistant isolates and the display of RFLP profiles in 19 of 69 (27.54%) ethambutol-resistant isolates were abnormal.
Conclusion:
The EMB-resistance of M. TB strains isolated from patients in Xi'an is related to the mutation of embB gene, PCR-SSCP and PCR-RFLP are sensitive methods for detecting ethambutol-resistance of M. tuberculosis.
Related Concept Videos
Pulmonary Tuberculosis V
Latent tuberculosis infection occurs when TB bacteria are present in a person's body, but are not causing illness or symptoms. It is not contagious, and preventive treatment is crucial to avoid the progression...
Development of Antibiotic Resistance
Mechanism of Antibiotic Resistance in MRSA
Pulmonary Tuberculosis I
Causative Organism
The primary infectious agent causing tuberculosis is Mycobacterium tuberculosis, a slow-growing, acid-fast, aerobic rod that exhibits sensitivity to heat and ultraviolet light. Instances of Mycobacterium bovis and Mycobacterium avium contributing to the development of TB infection are rare.
Mode of...
Pharmacogenetics of Drug Targets: β₂-Adrenergic Receptors, Apo E, Thymidylate Synthase