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INHIBITION OF METHICILLIN-RESISTANT STAPHYLOCOCCUS AUREUS (MRSA) BIOFILM: THE ESSENTIAL ROLE AND POTENTIAL USAGE OF BACTERIOCINS Febrianti, Tati; Conny Riana Tjampakasari
Journal of Vocational Health Studies Vol. 8 No. 1 (2024): July 2024 | JOURNAL OF VOCATIONAL HEALTH STUDIES
Publisher : Faculty of Vocational Studies, Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jvhs.V8.I1.2024.68-77

Abstract

Background: The potential of Methicillin-Resistant Staphylococcus aureus (MRSA) to develop biofilms and its resistance to antibiotics become major worldwide issue. Complementary anti-microbial strategies have been used recently, in particular for the treatment of MRSA biofilm-associated resistance. Purpose: To review the potential, essential role, and mechanism of bacteriocin that can inhibit MRSA biofilms. The review was conducted by searching and analyzing published articles from Elsevier, ProQuest and PubMed database. Review: Globally, the incidence of MRSA in 85 countries based on WHO surveillance reaches more than 20%. Biofilm, as one of the virulence factors of MRSA, can result in the failure of antibiotic therapy. According to reports, bacteriocins, such as peptides synthesized by Gram-negative and Gram-positive bacteria, have antimicrobial activity that has the potential to inhibit antibiotic-resistant pathogens and biofilms formed by MRSA. Result: The bacteriostatic and bactericidal activity of bacteriocins against MRSA has been shown through research across several countries on the usage of bacteriocins, which was isolated from different types of bacteria against MRSA biofilms. Bacteriocins contribute to the inhibition of MRSA biofilms by inhibiting the synthesis of cell walls, leading to pores in the cytoplasmic membranes of bacterial cells, interrupting the synthesis of extracellular membranes, disrupting cell membranes, and reducing the number of planktonic cells within MRSA biofilms. Conclusion: Bacteriocins have an effective mechanism for treating MRSA biofilms with low toxicity and risk of resistance, hence they are safe to be developed as complementary components to antibiotics in an effort to treat MRSA biofilms.
Third-Generation cephalosporins (3GC) and Fluoroquinolones (FQ) Co-Resistance in Extended-Spectrum Beta-Lactamase-Producing Escherichia coli (ESBL-Ec) from Clinical and Community Isolates Febrianti, Tati; Puspandari, Nelly; Karuniawati, Anis
EKSAKTA: Berkala Ilmiah Bidang MIPA Vol. 24 No. 04 (2023): Eksakta : Berkala Ilmiah Bidang MIPA (E-ISSN : 2549-7464)
Publisher : Faculty of Mathematics and Natural Sciences (FMIPA), Universitas Negeri Padang, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/eksakta/vol23-iss04/462

Abstract

The growing AMR issue affects the current antimicrobial therapy recommendations, particularly for broad-spectrum antibiotics, like third-generation cephalosporins (3GC) and fluoroquinolones (FQ). Actually, the inappropriate use of both antibiotics in clinical and community settings increase the resistance of extended-spectrum beta-lactamase-producing Escherichia coli (ESBL-Ec). Although ESBL-Ec is used as a surveillance indicator of bacterial resistance, but currently studies related to 3GC-FQ co-resistance among clinical and community (including human and wastewater samples) based ESBL-Ec isolation, have not been widely carried out. The objective of this study was to analyze the possibility and mechanism of 3GC-FQ co-resistance among ESBL-Ec, in human clinical and communal isolates from previous published research. Out of 257 articles screened, four studies in accordance with our study are included in the analysis. The result indicated that ESBL-Ec derived from all sample sources had 3GC-FQ co-resistance. According to two studies reviewed, blaCTX-M was the most predominant ESBL gene, while the FQ-associated resistant gene dominated by qnr family genes. Resistant genes and co-resistant ESBL-Ec can be spread rapidly through plasmids.
Genotypic pattern of fluoroquinolone resistance among extended-spectrum beta-lactamase-producing Escherichia coli Febrianti, Tati; Puspandasari, Nelly; Febriyana, Dwi; Weaver, Tom; Karuniawati, Anis
Medical Journal of Indonesia Vol. 33 No. 4 (2024): December
Publisher : Faculty of Medicine Universitas Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13181/mji.oa.247544

Abstract

BACKGROUND Fluoroquinolone (FQ) is one of the therapeutic options for treating extended-spectrum beta-lactamase (ESBL)-producing Escherichia coli (ESBL-Ec) infection, but its use could increase the resistance level of ESBL-Ec. This study aimed to analyze the resistant genes responsible for ESBL production and FQ resistance among the ESBL-Ec isolated from healthy humans and communal wastewater. METHODS This was an observational study using stored isolates and laboratory data. Genome sequencing was done on 43 E. coli DNA isolates before resistance genes, mutations, and high-risk clones were examined through bioinformatic data analysis. RESULTS The analysis of 39 ESBL-Ec isolates showed ESBL genes, including blaCTX-M-55 (56%), blaCTX-M-15 (31%), and blaCTX-M-27 (8%). ESBL-Ec isolates exhibited mutations in gyrA (54%), gyrB (0%), parC (28%), and parE (10%). Plasmid-mediated quinolone resistance genes detected included qnrS1 (54%), qnrS13 (13%), qnrB2 (3%), aac(6’)-Ib-cr5 (3%), qepA (0%), and oqxAB (0%). ESBL and FQ resistance genes were simultaneously detected in 33 ESBL-Ec isolates, with high-risk clones identified as ST155, ST10, ST23, ST38, ST131, and ST69 Cplx. CONCLUSIONS ESBL and FQ resistance genes were simultaneously detected in ESBL-Ec isolated from healthy humans and communal wastewater.