Molecular Methods for Healthcare-Acquired Infections

Arcenas, Rodney

doi:10.1016/b978-0-12-800886-7.00014-5

Cited by 2 publications

(2 citation statements)

References 161 publications

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“…Molecular typing of Salmonella has proven to be an important infection control tool as it helps in monitoring the prevalence of specific strains in a cluster of unrelated outbreaks or within human healthcare institutions. It also provide information on the genetic relatedness of strains that are useful for surveillance as well as during an epidemiological investigation of outbreaks [ 13 ]. Two of the most popular molecular typing methods used in Salmonella are the Pulse Field Gel Electrophoresis (PFGE) and the Multilocus Sequence Typing (MLST).…”

Section: Introductionmentioning

confidence: 99%

Virulence Gene Profile, Antimicrobial Resistance and Multilocus Sequence Typing of Salmonella enterica Subsp. enterica Serovar Enteritidis from Chickens and Chicken Products

Zakaria

Hassan

Sharif

et al. 2022

Animals

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This study was undertaken to determine the virulence, antimicrobial resistance and molecular subtypes of Salmonella in the Central Region of Peninsular Malaysia. A total of 45 Salmonella Enteritidis were detected from live chicken (cloacal swab), and chicken products (fresh and ready-to-eat meat) samples upon cultural isolation and serotyping. Similarly, an antimicrobial susceptibility test based on the Kirby Bauer disk diffusion method as well as antimicrobial resistance AMR genes, virulence determinants and multilocus sequence typing (MLST) typing were conducted after the Whole Genome Sequencing and analysis of the isolates. The results indicate that sequence types ST1925 (63.7%), and ST11 (26.5%) were the predominant out of the seven sequence types identified (ST292, ST329, ST365, ST423 and ST2132). The phenotypic antimicrobial profile corresponds to the genotypic characterization in that the majority of the isolates that exhibited tetracycline, gentamycin and aminoglycoside resistance; they also possessed the tetC and blaTEM β-Lactam resistance genes. However, isolates from cloacal swabs showed the highest number of resistance genes compared to the chicken products (fresh and ready-to-eat meat) samples. Furthermore, most of the virulence genes were found to cluster in the Salmonella pathogenicity island (SPI). In this study, all the isolates were found to possess SPI-1, which codes for the type III secretion system, which functions as actin-binding proteins (SptP and SopE). The virulence plasmid (VP) genes (spvB, spvC) were present in all genotypes except ST365. The findings of this study, particularly with regard to the molecular subtypes and AMR profiles of the Salmonella Enteritidis serotype shows multidrug-resistance features as well as genetic characteristics indicative of high pathogenicity.

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Section: Introductionmentioning

confidence: 99%

Virulence Gene Profile, Antimicrobial Resistance and Multilocus Sequence Typing of Salmonella enterica Subsp. enterica Serovar Enteritidis from Chickens and Chicken Products

Zakaria

Hassan

Sharif

et al. 2022

Animals

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“…Additionally, protein A can bind to the von Willebrand factor and has a role in endovascular infection and endocarditis. 4 To understand the epidemiology of S. aureus, both the methicillin-sensitive S. aureus (MSSA) and MRSA, molecular investigations of S. aureus strains are required. Molecular typing can assist in monitoring and limiting the spread of S. aureus in healthcare facilities.…”

mentioning

confidence: 99%

Diversity of <em>Spa</em> gene between methicillin-resistant and methicillin-sensitive <em>Staphylococcus aureus</em> bacteria in a tertiary referral hospital, Indonesia

Amelia,

Kusumawati,

Balatif

et al. 2023

Med J Indones

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BACKGROUND Spa typing is an effective and fast technique to identify the prevalence and spread of Staphylococcus aureus strains based on their spa gene profiles. The distribution of spa types will contribute to control the spread of S. aureus. Little is known regarding the spa types of S. aureus in Indonesia. This study aimed to investigate the diversity of spa gene among S. aureus carriage isolates in North Sumatra Province, Indonesia. METHODS 79 S. aureus isolates consisting of 39 methicillin-resistant S. aureus (MRSA) and 40 methicillin-susceptible S. aureus (MSSA) carriage isolates were identified by VITEK2 Compact (Biomerieux, Indonesia) to detect mecA gene. All samples underwent spa typing and sequencing. RESULTS Spa gene was detected among 31/39 (79%) of the MRSA isolates and 24/40 (60%) of the MSSA isolates. Most spa typing genes were identified between 350 and 400 base pair (bp). t258 and t852 were the most prevalence spa types among MRSA and MSSA isolates, respectively. CONCLUSIONS Many MRSA and MSSA isolates encoded spa gene. The most genes detected were t258 and t852, identified in Germany and Portugal, respectively; while t18977 was initially identified in Malaysia. This indicated a global spread of MRSA according to spa typing.

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Molecular Methods for Healthcare-Acquired Infections

Cited by 2 publications

References 161 publications

Virulence Gene Profile, Antimicrobial Resistance and Multilocus Sequence Typing of Salmonella enterica Subsp. enterica Serovar Enteritidis from Chickens and Chicken Products

Virulence Gene Profile, Antimicrobial Resistance and Multilocus Sequence Typing of Salmonella enterica Subsp. enterica Serovar Enteritidis from Chickens and Chicken Products

Diversity of <em>Spa</em> gene between methicillin-resistant and methicillin-sensitive <em>Staphylococcus aureus</em> bacteria in a tertiary referral hospital, Indonesia

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