Can Molecular Methods Detect 1% Isoniazid Resistance in Mycobacterium tuberculosis?

Author:

Folkvardsen Dorte Bek1,Svensson Erik1,Thomsen Vibeke Ø.1,Rasmussen Erik Michael1,Bang Didi1,Werngren Jim2,Hoffner Sven2,Hillemann Doris3,Rigouts Leen4

Affiliation:

1. International Reference Laboratory of Mycobacteriology, Statens Serum Institut, Copenhagen, Denmark

2. Swedish Institute for Communicable Diseases Control, Solna, Sweden

3. Forschungszentrum Borstel, National Reference Center for Mycobacteria, Borstel, Germany

4. Mycobacteriology Unit, Institute of Tropical Medicine, Antwerp, Belgium

Abstract

ABSTRACT Patients may harbor both drug-susceptible and -resistant bacteria, representing heteroresistance. We studied mixtures of isoniazid-resistant and -susceptible Mycobacterium tuberculosis strains. Conventional drug susceptibility testing was the most sensitive method of detection, whereas the line probe assay and sequencing were not able to detect the clinically relevant 1% proportion of resistant bacteria.

Publisher

American Society for Microbiology

Subject

Microbiology (medical)

Reference10 articles.

1. Probability Distribution of Drug-Resistant Mutants in Unselected Populations of Mycobacterium tuberculosis

2. The Mechanism of Isoniazid Killing: Clarity Through the Scope of Genetics

3. Mycobacteria: laboratory methods for testing drug sensitivity and resistance;Canetti G;Bull. World Health Organ.,1963

4. Advances in techniques of testing mycobacterial drug sensitivity, and the use of sensitivity tests in tuberculosis programmes;Canetti G;Bull. World Health Organ.,1969

5. Multidrug-resistant tuberculosis: rapid detection of resistance to rifampin and high or low levels of isoniazid in clinical specimens and isolates

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