ArticleAntibiotics (Basel, Switzerland)2022
Phenotypic and Genotypic Characterization of Macrolide, Lincosamide and Streptogramin B Resistance among Clinical Methicillin-Resistant
Article in Antibiotics (Basel, Switzerland), 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed, 7 citations in OpenAlex.
- Bacteriophage Challenge Drives Genomic and Proteomic Remodeling and Alters Antibiotic Resistance in a Methicillin-ResistantAntibiotics (Basel, Switzerland) · 2026Article
- One Health Genomic Analysis of Methicillin-Resistant Staphylococcus spp. From Humans, Cats, and Dogs in a Veterinary Hospital in Central Chile.Zoonoses and public health · 2026Article
- Development and application of a triplex ddPCR method for simultaneous detection of MLSB resistance genes in feces and environmental samples.Frontiers in microbiology · 2026Article
- The Changes in the Antibiotic Resistance ofJournal of clinical medicine · 2025Article
- Heterogeneity and transmission of food safety-related enterotoxigenicMicrobiology spectrum · 2023Article
- Study of the Antibacterial Capacity of a Biomaterial of Zeolites Saturated with Copper Ions (CuNanomaterials (Basel, Switzerland) · 2023Article
- Molecular epidemiology and characterization of antimicrobial-resistantFrontiers in cellular and infection microbiology · 2023Article
- Article
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Authors and funding
11 authors at 3 institutions in 1 country.
Funding
Abstract
Macrolides, lincosamides, and type B streptogramins (MLSB) are important therapeutic options to treat methicillin-resistant Staphylococcus aureus (MRSA) infections; however, resistance to these antibiotics has been emerging. In Chile, data on the MLSB resistance phenotypes are scarce in both community-(CA) and hospital-acquired (HA) MRSA isolates. Antimicrobial susceptibility to MLSB was determined for sixty-eight non-repetitive isolates of each HA-(32) and CA-MRSA (36). Detection of SCCmec elements, ermA, ermB, ermC, and msrA genes was performed by PCR. The predominant clones were SCCmec I-ST5 (HA-MRSA) and type IVc-ST8 (CA-MRSA). Most of the HA-MRSA isolates (97%) showed resistance to clindamycin, erythromycin, azithromycin, and clarithromycin. Among CA-MRSA isolates, 28% were resistant to erythromycin, azithromycin, and 25% to clarithromycin. All isolates were susceptible to linezolid, vancomycin, daptomycin and trimethoprim/sulfamethoxazole, and over 97% to rifampicin. The ermA gene was amplified in 88% of HA-MRSA and 17% of CA-MRSA isolates (p < 0.001). The ermC gene was detected in 6% of HA-SARM and none of CA-SARM isolates, whereas the msrA gene was only amplified in 22% of CA-MRSA (p < 0.005). Our results demonstrate the prevalence of the cMLSB resistance phenotype in all HA-MRSA isolates in Chile, with the ermA being the predominant gene identified among these isolates.
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