Rapid detection of isoniazid resistance in mycobacterium tuberculosis probes for selecting nucleic acid encoding isoniazid resistance, and methods and kits
US5633131A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Aug 14, 1992 |
| Grant date | May 27, 1997 |
| Priority date | — |
| Expiry date | Aug 14, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S435/81
- WIPO fieldBiotechnology
- WIPO sectorChemistry
Abstract
Multi-drug resistant strains of Mycobacterium tuberculosis represent a considerable threat to public health worldwide. Resistance to isoniazid (INH), a key component of anti-tuberculosis regimens, is often associated with loss of catalase activity and virulence. The katG gene, encoding HPI catalase-peroxidase, mediates INH-sensitivity and that the high level resistance encountered clinically may be due to deletions, insertions or point mutations which reduce or eliminate the expression of the catalase gene in the chromosomal region encompassing katG. INH-resistant strains of Mycobacterium tuberculosis are detected by nucleic acid hybridization with a unique nucleic acid sequence or by amplification techniques.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.