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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...
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...
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...
Defense Against Bacterial Pathogens01:31

Defense Against Bacterial Pathogens

The human immune system is a complex network of cells, tissues, and organs that work together to defend the body against bacterial infections. It consists of various immune cells, each playing a specific role in the defense mechanism.
Phagocytes
Phagocytes are the frontline soldiers of the immune system. They include neutrophils and macrophages. Neutrophils are the most abundant type of white blood cell and are quickly mobilized to the site of infection. Macrophages are larger cells that patrol...
Development of Antibiotic Resistance01:30

Development of Antibiotic Resistance

Antibiotic resistance is a major public health concern that arises when bacteria evolve mechanisms to withstand the effects of antibiotic treatments. This resistance can be intrinsic, acquired through genetic mutations, or transferred between bacteria via horizontal gene transfer. The development of antibiotic resistance poses significant challenges in treating bacterial infections and necessitates ongoing research to develop new therapeutic strategies.Intrinsic resistance occurs when bacterial...
Healthcare Associated Infections II: Preventive Measures01:22

Healthcare Associated Infections II: Preventive Measures

Essential infection prevention measures are based on the knowledge of the infection chain, the modes of transmission in healthcare settings, and the use of the best practices in all healthcare settings. Compulsory public reporting of healthcare-associated infection rates is needed to allow individuals and the community to make informed choices regarding selecting a healthcare facility.
The best practices for preventing healthcare-associated infections include hand hygiene, patient risk...

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Related Experiment Video

Updated: May 22, 2026

Subcutaneous Infection of Methicillin Resistant Staphylococcus Aureus (MRSA)
12:18

Subcutaneous Infection of Methicillin Resistant Staphylococcus Aureus (MRSA)

Published on: February 9, 2011

Methicillin-resistant Staphylococcus aureus. A continuing infection control challenge.

John A Molinari1

  • 1THE DENTAL ADVISOR, Ann Arbor, Mich, USA. jmolinari@dentaladvisor.com

Dentistry Today
|May 23, 2012
PubMed
Summary

Adherence to infection control protocols is crucial for healthcare professionals to combat antibiotic-resistant bacteria like MRSA. Implementing aseptic techniques and proper disinfection minimizes the spread of infections and protects patients.

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Biosensor for Detection of Antibiotic Resistant Staphylococcus Bacteria
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Biosensor for Detection of Antibiotic Resistant Staphylococcus Bacteria

Published on: May 8, 2013

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Last Updated: May 22, 2026

Subcutaneous Infection of Methicillin Resistant Staphylococcus Aureus (MRSA)
12:18

Subcutaneous Infection of Methicillin Resistant Staphylococcus Aureus (MRSA)

Published on: February 9, 2011

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:

  • Microbiology
  • Infectious Diseases
  • Public Health

Background:

  • Methicillin-resistant Staphylococcus aureus (MRSA) and other staphylococci are widespread due to their adaptability.
  • Declining antibiotic effectiveness, such as penicillin, against resistant strains poses a significant challenge.
  • The ubiquitous nature of these bacteria necessitates stringent infection control measures.

Purpose of the Study:

  • To emphasize the importance of evidence-based infection control precautions in healthcare settings.
  • To highlight the role of aseptic techniques in reducing infection transmission.
  • To underscore the need for continuous vigilance against evolving infectious threats.

Main Methods:

  • Routine application of proven, evidence-based infection control precautions.
  • Ensuring proper cleaning and reprocessing of reusable equipment.
  • Cleaning and disinfecting clinical contact surfaces with EPA-registered disinfectants after each patient.
  • Proper discarding of single-use items.

Main Results:

  • Improved compliance with aseptic techniques can reduce detectable infections.
  • Proper disinfection of surfaces, especially after visible contamination, is critical.
  • Effective infection control practices protect both patients and healthcare environments.

Conclusions:

  • Healthcare professionals must consistently apply evidence-based infection control measures.
  • Continuous improvement and adaptation of infection control strategies are necessary to combat evolving microorganisms.
  • Maintaining high standards of infection control is essential to minimize disease potential.