Antibacterial activity of <i>Syzygium aromaticum</i> (clove) against uropathogens producing ESBL, MBL, and AmpC beta-lactamase: Are we close to getting a new antibacterial agent?

Faujdar, Sameer S; Bisht, Dakshina; Sharma, Amisha · J Family Med Prim Care · 2020

basic_science · Level V

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Abstract

The present study was done to access the antibacterial activity of clove (<i>Syzygium aromaticum</i>) against extended-spectrum beta-lactamase (ESBL), metallo-beta-lactamase (MBL), and AmpC beta-lactamase-producing gram-negative bacteria causing urinary tract infection. A total of 221 gram-negative uropathogens were isolated and screened for beta-lactamase (ESBL, MBL, and AmpC) production and further tested against ethanolic extract of clove (<i>S. aromaticum</i>) for its antibacterial activity. Clove was effective against all gram-negative isolates but the best antibacterial activity was shown against <i>Proteus</i> species with 19 mm zone of inhibition, 0.39 mg/ml minimum inhibitory concentration (MIC) and 0.19 mg/ml minimum bactericidal concentration (MBC). Clove extract showed different antibacterial potential against all gram-negative uropathogens. Clove activity for particular strain was found to be similar between isolates producing beta-lactamase and non beta-lactamase.