Phenylpropanoids of Alpinia galanga as efflux pump inhibitors in Mycobacterium smegmatis mc² 155.
The first and second line drugs used for the treatment of tuberculosis are now becoming ineffective due to emergence of resistant strains. Efflux pump provokes resistance in mycobacterium and hence could be explored as a new target for the discovery of anti-TB agents. In search of efflux pump inhibitors, MIC and modulation factor of phenylpropanoids isolated from A. galanga rhizome were determined prior to the accumulation and efflux assay. Phenylpropanoid compounds viz. 1'-S-1'-acetoxychavicol acetate, trans-p-coumaryl diacetate and 1'-S-1'-acetoxyeugenol acetate were found to be potent modulators and decreased the MIC of ethidium bromide by 64 fold at the concentration of 2.5, 6.25 and 5.0 mg/L respectively. 1'-S-1'-acetoxyeugenol acetate enhanced the accumulation and inhibited the efflux of EtBr in Mycobacterium smegmatis mc² 155 cells.
Department of Natural Products, National Institute of Pharmaceutical Education and Research, Sector-67, S.A.S. Nagar-160062, Punjab, India.
Somendu K
SK
Roy
Sonika
S
Pahwa
Hemraj
H
Nandanwar
Sanjay M
SM
Jachak
D032429:Alpinia / Q000737:chemistry*; D000900:Anti-Bacterial Agents / Q000494:pharmacology*; D001426:Bacterial Proteins / Q000037:antagonists & inhibitors; D001592:Benzyl Alcohols / Q000302:isolation & purification / Q000494:pharmacology; D003374:Coumarins / Q000302:isolation & purification / Q000494:pharmacology; D004351:Drug Resistance / Q000187:drug effects*; D004996:Ethidium / Q000494:pharmacology*; D005054:Eugenol / Q000031:analogs & derivatives / Q000302:isolation & purification / Q000494:pharmacology; D041743:Herb-Drug Interactions; D008826:Microbial Sensitivity Tests; D020102:Mycobacterium smegmatis / Q000187:drug effects*; D010636:Phenols / Q000302:isolation & purification / Q000494:pharmacology*; D008517:Phytotherapy; D010936:Plant Extracts / Q000737:chemistry / Q000494:pharmacology*; D027343:Rhizome; D014376:Tuberculosis / Q000188:drug therapy / Q000382:microbiology
D000900:Anti-Bacterial Agents; D001426:Bacterial Proteins; D001592:Benzyl Alcohols; D003374:Coumarins; D010636:Phenols; D010936:Plant Extracts; D005054:Eugenol; C057996:1'-acetoxyeugenol; D004996:Ethidium; C047948:1'-acetoxychavicol acetate