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Article Publish Status: FREE
Abstract Title:

Antibacterial and Antibiofilm Activities of Nonpolar Extracts ofRegel. against Multidrug Resistant Bacteria.

Abstract Source:

Biomed Res Int. 2018 ;2018:9845075. Epub 2018 Jul 11. PMID: 30105271

Abstract Author(s):

Arunkumar Karunanidhi, Ehsanollah Ghaznavi-Rad, Rukman Awang Hamat, Mallikarjuna Rao Pichika, Leslie Than Thian Lung, Fazlin Mohd Fauzi, Sridevi Chigurupati, Alex van Belkum, Vasanthakumari Neela

Article Affiliation:

Arunkumar Karunanidhi

Abstract:

The present study assessed theantibacterial and antibiofilm potential of hexane (ASHE) and dichloromethane (ASDE) extracts of(Persian shallot) against planktonic cells and biofilm structures of clinically significant antibiotic resistant pathogens, with a special emphasis on methicillin-sensitive(MSSA), methicillin-resistant(MRSA), and emerging pathogens,and. Antibacterial activities were determined through disk diffusion, minimum inhibitory concentration (MIC), minimum bactericidal concentration (MBC), time-kill kinetics, and electron microscopy. Antibiofilm activity was assessed by XTT [2,3-(2-methoxy-4-nitro-5-sulfo-phenyl)-2H-tetrazolium-5-carboxanilide] reduction assay and by confocal laser scanning microscopy (CLSM). The zone of inhibition ranged from 13 to 33 mm, while the MICs and MBCs ranged from 16 to 1024g mL. Both ASHE and ASDE completely eradicated overnight cultures of the test microorganisms, including antibiotic resistant strains. Time-kill studies showed that the extracts were strongly bactericidal against planktonic cultures of, MRSA,andas early as 4 hours postinoculation (hpi). ASHE and ASDE were shown to inhibit preformed biofilms of the four biofilm phenotypes tested. Our results demonstrate the potential therapeutic application of ASHE and ASDE to inhibit the growth of gram-positive and gram-negative biofilms of clinical significance and warrant further investigation of the potential ofbulbs against biofilm-related drug resistance.

Study Type : In Vitro Study

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