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Related Concept Videos

Clinical Significance of Antibiotic Resistance01:25

Clinical Significance of Antibiotic Resistance

Methicillin-resistant Staphylococcus aureus (MRSA) presents a critical public health threat, arising from its capacity to resist β-lactam antibiotics due to acquisition of the mecA gene within the staphylococcal cassette chromosome mec (SCCmec). This gene encodes penicillin-binding protein 2a (PBP2a), which impairs binding efficacy of methicillin and other β-lactams. MRSA has evolved into distinct clonal lineages impacting humans and animals alike, reinforcing its significance within the One...
Mechanism of Antibiotic Resistance in MRSA01:25

Mechanism of Antibiotic Resistance in MRSA

Antibiotic resistance in bacteria arises when microorganisms evolve the ability to withstand drugs designed to kill them or inhibit their growth, rendering once-effective treatments useless. This phenomenon, driven by genetic change and selection under antibiotic exposure, poses a profound threat to modern medicine. Mechanisms include drug-inactivating enzymes (e.g., β-lactamases), efflux pumps that eject antibiotics, mutations altering antibiotic targets, decreased drug uptake, and acquisition...
Staphylococcal Skin Infections01:29

Staphylococcal Skin Infections

Staphylococcus aureus is a Gram-positive coccus that resides harmlessly on the skin and mucous membranes of healthy individuals. When the skin barrier is breached, it can shift from a commensal to an opportunistic pathogen. This transition is facilitated by surface adhesins, such as clumping factor B and S. aureus surface protein G (SasG), which bind to structural proteins, including loricrin and cytokeratin, in the damaged epidermis. Protein A, another key factor, binds the Fc region of...
Microbiota Modulation by Antibiotics01:21

Microbiota Modulation by Antibiotics

Antibiotics have revolutionized modern medicine by saving countless lives from bacterial infections. However, their widespread use has inadvertently harmed the delicate balance of the human gut microbiota. The gut microbiota, a complex community of bacteria, archaea, viruses, and fungi, plays a vital role in regulating metabolism, immune responses, and maintaining intestinal health. Antibiotics, especially broad-spectrum types, disrupt this ecosystem by eradicating both harmful and beneficial...
Colonisation of Pathogens01:25

Colonisation of Pathogens

Pathogen colonization of host tissues is a critical step in the development of infectious diseases. Various pathogenic microorganisms, including bacteria, fungi, viruses, and protozoa, have evolved complex strategies to attach to, invade, and persist within host environments. These mechanisms enable pathogens to establish infections, evade immune responses, and resist antimicrobial treatments.Attachment to Host CellsIn bacteria, colonization typically begins with adherence to host epithelial...
Rapid Identification of Pathogens01:25

Rapid Identification of Pathogens

MALDI-TOF MS has transformed clinical microbiology by offering a rapid and reliable method for pathogen identification. The traditional approach to microbial identification typically involves time-consuming culture techniques and biochemical tests, which can delay the initiation of appropriate antimicrobial therapy. MALDI-TOF MS avoids these delays by using characteristic ribosomal protein mass patterns of microbial cells, enabling accurate species-level identification within minutes.Principle...

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Related Experiment Video

Updated: Jun 5, 2026

Biosensor for Detection of Antibiotic Resistant Staphylococcus Bacteria
14:04

Biosensor for Detection of Antibiotic Resistant Staphylococcus Bacteria

Published on: May 8, 2013

Meticillin-resistant Staphylococcus aureus (MRSA): screening and decolonisation.

Barry Cookson1, Marc J M Bonten, Fiona M Mackenzie

  • 1Laboratory of Healthcare Associated Infection, Centre for Infections, Health Protection Agency, 61 Colindale Avenue, London NW95EQ, UK. barry.cookson@hpa.org.uk

International Journal of Antimicrobial Agents
|December 18, 2010
PubMed
Summary

Screening patients for Meticillin-resistant Staphylococcus aureus (MRSA) is key for control in endemic areas. Decolonising carriers may be an option, but costs and benefits need evaluation.

Related Experiment Videos

Last Updated: Jun 5, 2026

Biosensor for Detection of Antibiotic Resistant Staphylococcus Bacteria
14:04

Biosensor for Detection of Antibiotic Resistant Staphylococcus Bacteria

Published on: May 8, 2013

Area of Science:

  • Infectious Diseases
  • Public Health
  • Clinical Microbiology

Background:

  • Meticillin-resistant Staphylococcus aureus (MRSA) poses a growing threat in healthcare and the community.
  • Effective MRSA control requires strategies addressing healthcare, community, and livestock reservoirs.

Framework:

  • A European Consensus Conference concluded that patient screening is essential for MRSA control in endemic settings.
  • Decolonisation of MRSA carriers is a potential strategy, contingent on infection risk assessment within specific contexts.

Implementation:

  • Staff screening for MRSA is complex due to challenges in differentiating transient carriage from colonization and potential impacts on staffing.
  • Environmental screening can serve as an audit tool for hygiene practices, though its direct role in MRSA infection is not fully understood.

Implications:

  • Both MRSA screening and decolonisation strategies incur significant costs, necessitating careful evaluation of their clinical value.
  • Ongoing European initiatives aim to provide data on the cost-effectiveness of various MRSA infection control strategies.