Tags

Type your tag names separated by a space and hit enter

Cinnamaldehyde: a compound with antimicrobial and synergistic activity against ESBL-producing quinolone-resistant pathogenic Enterobacteriaceae.

Abstract

Usage of cephalosporin and quinolone antibiotics has aggravated the development of extended-spectrum beta-lactamase (ESBL)-producing quinolone-resistant (QR) pathogenic Enterobacteriaceae. The present study aims to determine antimicrobial activity of cinnamaldehyde alone or in combination with cefotaxime/ciprofloxacin to reverse the drug resistance and evaluations of efficacy, and possible molecular mechanism of action of the combination was also evaluated using in vitro assays. Broth microdilution assay was used to determine minimum inhibitory concentrations (MICs) of cinnamaldehyde and antibiotics against ESBL-QR Enterobacteriaceae. Synergistic effect and dynamic interaction with antibiotics were further examined by checkerboard assay, isobologram analysis, and time-kill assay, respectively. Cellular morphology of bacteria was viewed with scanning electron microscopy (SEM). Effects of cinnamaldehyde and its combination on the expression of gene encoding-porins (ompC, ompF, ompK35, and ompK36), efflux pump genes (acrB-E. coli, acrB-K. pneumoniae), and antibiotic-resistant genes (blaTEM, blaSHV, blaCTXM, and QnrB) were evaluated using real-time quantitative PCR (RT-qPCR). Majority of the E. coli (32.1%) and K. pneumoniae (24.2%) isolates demonstrated MIC of cinnamaldehyde at 7.34 μg/mL and 0.91 g/mL, respectively. Synergism between cinnamaldehyde and cefotaxime was noted among 75% E. coli and 60.6% K. pneumoniae. Similarly, synergism with ciprofloxacin was observed among 39.6% and 42.4% of the bacteria, respectively. Thus, cinnamaldehyde reduced MIC of cefotaxime and ciprofloxacin 2-1024-fold with bactericidal and/synergistic effect after 24 h. Cinnamaldehyde and its combination altered gene expression by ~ 1.6 to ~ 400-fold. Distorted bacterial cell structures were visible after treatment with cinnamaldehyde and/or with cefotaxime/ciprofloxacin. The results indicated the potential efficacy and mode of action of cinnamaldehyde alone and in combination with antibiotics against pathogenic ESBL-QR bacteria.

Authors+Show Affiliations

Department of Biochemistry and Medical Biotechnology, Calcutta School of Tropical Medicine, 108, C.R. Avenue, Kolkata, 700073, India.Department of Biochemistry and Medical Biotechnology, Calcutta School of Tropical Medicine, 108, C.R. Avenue, Kolkata, 700073, India. anusri.stm@gmail.com.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

31624984

Citation

Dhara, Lena, and Anusri Tripathi. "Cinnamaldehyde: a Compound With Antimicrobial and Synergistic Activity Against ESBL-producing Quinolone-resistant Pathogenic Enterobacteriaceae." European Journal of Clinical Microbiology & Infectious Diseases : Official Publication of the European Society of Clinical Microbiology, 2019.
Dhara L, Tripathi A. Cinnamaldehyde: a compound with antimicrobial and synergistic activity against ESBL-producing quinolone-resistant pathogenic Enterobacteriaceae. Eur J Clin Microbiol Infect Dis. 2019.
Dhara, L., & Tripathi, A. (2019). Cinnamaldehyde: a compound with antimicrobial and synergistic activity against ESBL-producing quinolone-resistant pathogenic Enterobacteriaceae. European Journal of Clinical Microbiology & Infectious Diseases : Official Publication of the European Society of Clinical Microbiology, doi:10.1007/s10096-019-03692-y.
Dhara L, Tripathi A. Cinnamaldehyde: a Compound With Antimicrobial and Synergistic Activity Against ESBL-producing Quinolone-resistant Pathogenic Enterobacteriaceae. Eur J Clin Microbiol Infect Dis. 2019 Oct 17; PubMed PMID: 31624984.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Cinnamaldehyde: a compound with antimicrobial and synergistic activity against ESBL-producing quinolone-resistant pathogenic Enterobacteriaceae. AU - Dhara,Lena, AU - Tripathi,Anusri, Y1 - 2019/10/17/ PY - 2019/06/14/received PY - 2019/08/26/accepted PY - 2019/10/19/entrez KW - Cinnamaldehyde KW - ESBL KW - Quinolone KW - Real-time quantitative PCR KW - Scanning electron microscopy KW - Synergy JF - European journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology JO - Eur. J. Clin. Microbiol. Infect. Dis. N2 - Usage of cephalosporin and quinolone antibiotics has aggravated the development of extended-spectrum beta-lactamase (ESBL)-producing quinolone-resistant (QR) pathogenic Enterobacteriaceae. The present study aims to determine antimicrobial activity of cinnamaldehyde alone or in combination with cefotaxime/ciprofloxacin to reverse the drug resistance and evaluations of efficacy, and possible molecular mechanism of action of the combination was also evaluated using in vitro assays. Broth microdilution assay was used to determine minimum inhibitory concentrations (MICs) of cinnamaldehyde and antibiotics against ESBL-QR Enterobacteriaceae. Synergistic effect and dynamic interaction with antibiotics were further examined by checkerboard assay, isobologram analysis, and time-kill assay, respectively. Cellular morphology of bacteria was viewed with scanning electron microscopy (SEM). Effects of cinnamaldehyde and its combination on the expression of gene encoding-porins (ompC, ompF, ompK35, and ompK36), efflux pump genes (acrB-E. coli, acrB-K. pneumoniae), and antibiotic-resistant genes (blaTEM, blaSHV, blaCTXM, and QnrB) were evaluated using real-time quantitative PCR (RT-qPCR). Majority of the E. coli (32.1%) and K. pneumoniae (24.2%) isolates demonstrated MIC of cinnamaldehyde at 7.34 μg/mL and 0.91 g/mL, respectively. Synergism between cinnamaldehyde and cefotaxime was noted among 75% E. coli and 60.6% K. pneumoniae. Similarly, synergism with ciprofloxacin was observed among 39.6% and 42.4% of the bacteria, respectively. Thus, cinnamaldehyde reduced MIC of cefotaxime and ciprofloxacin 2-1024-fold with bactericidal and/synergistic effect after 24 h. Cinnamaldehyde and its combination altered gene expression by ~ 1.6 to ~ 400-fold. Distorted bacterial cell structures were visible after treatment with cinnamaldehyde and/or with cefotaxime/ciprofloxacin. The results indicated the potential efficacy and mode of action of cinnamaldehyde alone and in combination with antibiotics against pathogenic ESBL-QR bacteria. SN - 1435-4373 UR - https://www.unboundmedicine.com/medline/citation/31624984/Cinnamaldehyde:_a_compound_with_antimicrobial_and_synergistic_activity_against_ESBL-producing_quinolone-resistant_pathogenic_Enterobacteriaceae L2 - https://dx.doi.org/10.1007/s10096-019-03692-y DB - PRIME DP - Unbound Medicine ER -