Accurate Detection of Methicillin-Resistant Staphylococcus aureus in Mixtures by Use of Single-Bacterium Duplex Droplet Digital PCR

Luo, Jun; Li, Junhua; Yang, Hang; Yu, Junping; Wei, Hongping

doi:10.1128/jcm.00716-17

Cited by 40 publications

(23 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The study by Rolo et al ( 2017 ) provided support that the Staphylococcal Chromosomal cassette (SCC mec ), a mobile genetic element, evolved from three Staphylococcus species— S. vitulinus, S. fleuretti , and S. sciuri . Since its original development, the antibiotic resistance gene remains highly conserved in chromosomes of MRSA, and is currently used as a marker for screening and identifying MRSA isolates (Koupahi et al, 2016 ; Luo et al, 2017 ). Up to the present, 11 types of SCC mec (40-60Kb) have been identified (IWG-SCC, 1999 ).…”

Section: The Mechanisms Of Antibiotic Resistance In Mrsamentioning

confidence: 99%

Streptomyces as a Prominent Resource of Future Anti-MRSA Drugs

et al. 2018

View full text Add to dashboard Cite

Methicillin-resistant Staphylococcus aureus (MRSA) pose a significant health threat as they tend to cause severe infections in vulnerable populations and are difficult to treat due to a limited range of effective antibiotics and also their ability to form biofilm. These organisms were once limited to hospital acquired infections but are now widely present in the community and even in animals. Furthermore, these organisms are constantly evolving to develop resistance to more antibiotics. This results in a need for new clinically useful antibiotics and one potential source are the Streptomyces which have already been the source of several anti-MRSA drugs including vancomycin. There remain large numbers of Streptomyces potentially undiscovered in underexplored regions such as mangrove, deserts, marine, and freshwater environments as well as endophytes. Organisms from these regions also face significant challenges to survival which often result in the production of novel bioactive compounds, several of which have already shown promise in drug development. We review the various mechanisms of antibiotic resistance in MRSA and all the known compounds isolated from Streptomyces with anti-MRSA activity with a focus on those from underexplored regions. The isolation of the full array of compounds Streptomyces are potentially capable of producing in the laboratory has proven a challenge, we also review techniques that have been used to overcome this obstacle including genetic cluster analysis. Additionally, we review the in vivo work done thus far with promising compounds of Streptomyces origin as well as the animal models that could be used for this work.

show abstract

Section: The Mechanisms Of Antibiotic Resistance In Mrsamentioning

confidence: 99%

Streptomyces as a Prominent Resource of Future Anti-MRSA Drugs

et al. 2018

View full text Add to dashboard Cite

show abstract

“…A great number of studies use dPCR to diagnose infectious disease-related viruses, including hepatitis B virus (HBV), cytomegalovirus, human influenza, and HIV [26][27][28]; bacterial infections (Mycobacterium tuberculosis, Chlamydia trachomatis, and Staphylococcus aureus) [29][30][31]; and parasitic infectious such as detection of Plasmodium falciparum and Plasmodium vivax [32].…”

Section: Digital Pcrmentioning

confidence: 99%

PCR and Infectious Diseases

Zauli¹

2020

Synthetic Biology - New Interdisciplinary Science

View full text Add to dashboard Cite

Since the 1950s, the medical community has been faced with infectious diseases, which have brought significant public health and financial challenges. Currently, routine testing for the laboratory diagnosis for infectious agents is based on cell culture, serological, and molecular methods. However, cell culture-based methods are used mainly in research laboratories and are less sensitive methods when compared with serological and molecular methods. The diagnosis of infectious diseases has been revolutionized by the development of molecular techniques, mainly with the applications of polymerase chain reaction (PCR). The high sensitivity, specificity, and ease with which the PCR can be used to detect genetic sequences known have led to your wide application in science. A great number of qualitative and quantitative molecular assays are mostly based on what have been described such as real-time PCR, multiplex PCR, LAMP-PCR, and digital PCR. These assays could identify active infection by detecting infectious agents and nucleic acid in various clinical conditions including arboviruses, sexually transmitted infections, and bacterial infections. Further advancement of molecular technology is needed to improve the capacity to detect infectious agents in order to control the spread of infectious diseases and lead to appropriate actions which help to benefit patients and health-care workers themselves.

show abstract

“…Some of the technologies are worth mentioning separately given the fact that they can be considered extremely elegant from an experimental design point of view. Digital droplet PCR for instance was shown to be sensitive and rapid and it has to be realized that instruments allowing in house development of droplet-based PCR tests are already (commercially) available ( Luo et al, 2017 ). Nanowires are attractive because of size, relatively low costs, and speed of the assay and broad applicability of the technology which, in addition, is easy to multiplex ( Ibarlucea et al, 2017 ).…”

Section: Targeted Genetic Detection Of Mssa and Mrsamentioning

confidence: 99%

Laboratory-Based and Point-of-Care Testing for MSSA/MRSA Detection in the Age of Whole Genome Sequencing

Belkum

Rochas

2018

Front. Microbiol.

View full text Add to dashboard Cite

Staphylococcus aureus is an opportunistic pathogen of animals and humans that is capable of both colonizing and infecting its eukaryotic host. It is frequently detected in the clinical microbiology routine laboratory. S. aureus is capable of acquiring antibiotic resistance traits with ease and, given its rapid global dissemination, resistance to meticillin in S. aureus has received extensive coverage in the popular and medical press. The detection of meticillin-resistant versus meticillin-susceptible S. aureus (MRSA and MSSA) is of significant clinical importance. Detection of meticillin resistance is relatively straightforward since it is defined by a single determinant, penicillin-binding protein 2a’, which exists in a limited number of genetic variants carried on various Staphylococcal Cassette Chromosomes mec. Diagnosis of MRSA and MSSA has evolved significantly over the past decades and there has been a strong shift from culture-based, phenotypic methods toward molecular detection, especially given the close correlation between the presence of the mec genes and phenotypic resistance. This brief review summarizes the current state of affairs concerning the mostly polymerase chain reaction-mediated detection of MRSA and MSSA in either the classical laboratory setting or at the point of care. The potential diagnostic impact of the currently emerging whole genome sequencing (WGS) technology will be discussed against a background of diagnostic, surveillance, and infection control parameters. Adequate detection of MSSA and MRSA is at the basis of any subsequent, more generic antibiotic susceptibility testing, epidemiological characterization, and detection of virulence factors, whether performed with classical technology or WGS analyses.

show abstract

Accurate Detection of Methicillin-Resistant Staphylococcus aureus in Mixtures by Use of Single-Bacterium Duplex Droplet Digital PCR

Cited by 40 publications

References 27 publications

Streptomyces as a Prominent Resource of Future Anti-MRSA Drugs

Streptomyces as a Prominent Resource of Future Anti-MRSA Drugs

PCR and Infectious Diseases

Laboratory-Based and Point-of-Care Testing for MSSA/MRSA Detection in the Age of Whole Genome Sequencing

Contact Info

Product

Resources

About