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Antimycobacterial neolignans isolated from Aristolochia taliscana.
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- Author(s): León-Díaz R;León-Díaz R; Meckes M; Said-Fernández S; Molina-Salinas GM; Vargas-Villarreal J; Torres J; Luna-Herrera J; Jiménez-Arellanes A
- Source:
Memorias do Instituto Oswaldo Cruz [Mem Inst Oswaldo Cruz] 2010 Feb; Vol. 105 (1), pp. 45-51.- Publication Type:
Journal Article; Research Support, Non-U.S. Gov't- Language:
English - Source:
- Additional Information
- Source: Publisher: Instituto Oswaldo Cruz Country of Publication: Brazil NLM ID: 7502619 Publication Model: Print Cited Medium: Internet ISSN: 1678-8060 (Electronic) Linking ISSN: 00740276 NLM ISO Abbreviation: Mem Inst Oswaldo Cruz Subsets: MEDLINE
- Publication Information: Original Publication: Rio de Janeiro : Instituto Oswaldo Cruz
- Subject Terms: Anti-Bacterial Agents/*pharmacology ; Aristolochia/*chemistry ; Lignans/*pharmacology ; Mycobacterium tuberculosis/*drug effects ; Plant Extracts/*pharmacology; Anti-Bacterial Agents/chemistry ; Anti-Bacterial Agents/isolation & purification ; Drug Resistance, Multiple, Bacterial ; Humans ; Lignans/isolation & purification ; Mexico ; Microbial Sensitivity Tests ; Mycobacterium/classification ; Mycobacterium/drug effects ; Plant Extracts/chemistry
- Abstract: Tuberculosis (TB - Mycobacterium tuberculosis) is an ancient infectious disease that has appeared once again as a serious worldwide health problem and now comprises the second leading cause of death resulting from a single infection. The prevalence of multidrug resistance (MDR) TB is increasing and therapeutic options for treatment are not always accessible; in fact, some patients do not respond to the available drugs. Therefore, there is an urgent need to develop novel anti-TB agents. The aim of the present study was to screen extracts of Aristolochia taliscana, a plant used in traditional Mexican medicine to treat cough and snake bites, for antimycobacterial activity. The hexanic extract of A. taliscana was tested by microdilution alamar blue assay against Mycobacterium strains and bioguided fractionation led to the isolation of the neolignans licarin A, licarin B and eupomatenoid-7, all of which had antimycobacterial activity. Licarin A was the most active compound, with minimum inhibitory concentrations of 3.12-12.5 microg/mL against the following M. tuberculosis strains: H37Rv, four mono-resistant H37Rv variants and 12 clinical MDR isolates, as well as against five non-tuberculous mycobacteria (NTM) strains. In conclusion, licarin A represents a potentially active anti-TB agent to treat MDR M. tuberculosis and NTM strains.
- Accession Number: 0 (Anti-Bacterial Agents)
0 (Lignans)
0 (Plant Extracts) - Publication Date: Date Created: 20100309 Date Completed: 20100719 Latest Revision: 20190606
- Publication Date: 20240829
- Accession Number: 10.1590/s0074-02762010000100006
- Accession Number: 20209328
- Source:
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