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Related Concept Videos

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...
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...
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...
Mismatch Repair01:36

Mismatch Repair

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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

Methicillin resistant Staphylococcus aureus - an overview.

N Haque1, M S Bari, L Bilkis

  • 1Department of Microbiology, Mymensingh Medical College, Mymensingh, Bangladesh. naziacb4 @gmail.com

Mymensingh Medical Journal : MMJ
|January 18, 2011
PubMed
Summary
This summary is machine-generated.

Methicillin-resistant Staphylococcus aureus (MRSA) is a growing multi-drug resistant pathogen. This review explores MRSA

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:

  • Microbiology
  • Infectious Diseases
  • Public Health

Background:

  • Methicillin-resistant Staphylococcus aureus (MRSA) is a significant nosocomial and community pathogen.
  • MRSA strains express the mecA gene, leading to resistance against beta-lactam antibiotics.
  • Increasing multi-drug resistance in MRSA poses a global health challenge.

Purpose of the Study:

  • To provide a critical review of Methicillin-resistant Staphylococcus aureus (MRSA).
  • To explore the history, prevalence, transmission, risk factors, pathogenicity, diagnosis, and control of MRSA.
  • To offer updated insights into this critical superbug.

Main Methods:

  • Critical review of existing literature on MRSA.
  • Exploration of epidemiological data and clinical significance.
  • Synthesis of information on laboratory diagnosis and control strategies.

Main Results:

  • MRSA is a prevalent pathogen with increasing multi-drug resistance.
  • Human colonization is common, with hospitals worldwide facing challenges.
  • Early and specific diagnosis is crucial for favorable patient outcomes.

Conclusions:

  • MRSA represents a serious and evolving threat in healthcare settings.
  • Comprehensive understanding of MRSA's epidemiology and pathogenicity is vital.
  • Effective prevention and control strategies are essential to combat MRSA spread.