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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...
Mismatch Repair01:36

Mismatch Repair

Overview
Mismatch Repair01:20

Mismatch Repair

Organisms are capable of detecting and fixing nucleotide mismatches that occur during DNA replication. This sophisticated process requires identifying the new strand and replacing the erroneous bases with correct nucleotides. Mismatch repair is coordinated by many proteins in both prokaryotes and eukaryotes.
The Mutator Protein Family Plays a Key Role in DNA Mismatch Repair
The human genome has more than 3 billion base pairs of DNA per cell. Prior to cell division, that vast amount of genetic...
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...
Rocky Mountain Spotted Fever01:26

Rocky Mountain Spotted Fever

Rocky Mountain Spotted Fever (RMSF) is a severe tick-borne illness caused by Rickettsia rickettsii, a Gram-negative, coccobacillary bacterium. This pathogen is an obligate intracellular parasite, requiring a host cell for replication. Transmission occurs through the bite of an infected tick. In the United States, the most important vectors are Dermacentor variabilis (American dog tick) and Dermacentor andersoni (Rocky Mountain wood tick), though other tick species may also serve as vectors.

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Related Experiment Video

Updated: Jul 14, 2026

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

Subcutaneous Infection of Methicillin Resistant Staphylococcus Aureus (MRSA)

Published on: February 9, 2011

[Which rate describes the MRSA situation appropriately?].

P Gastmeier1, I F Chaberny

  • 1Institut für Medizinische Mikrobiologie und Krankenhaushygiene, Medizinische Hochschule Hannover, Hannover, Germany.

Deutsche Medizinische Wochenschrift (1946)
|June 23, 2007
PubMed
Summary

Methicillin-resistant Staphylococcus aureus (MRSA) causes severe hospital infections, increasing mortality and costs. This article evaluates methods for accurately reporting MRSA infection rates to better understand its prevalence.

Related Experiment Videos

Last Updated: Jul 14, 2026

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

Subcutaneous Infection of Methicillin Resistant Staphylococcus Aureus (MRSA)

Published on: February 9, 2011

Area of Science:

  • Infectious Diseases
  • Hospital Epidemiology
  • Public Health

Context:

  • Rising incidence of MRSA (methicillin-resistant Staphylococcus aureus) infections in German hospitals.
  • MRSA infections lead to prolonged hospital stays, increased healthcare costs, and higher mortality rates compared to MSSA.
  • Need for reliable data to objectively describe the MRSA situation in healthcare settings.

Purpose:

  • To explain the advantages and disadvantages of various methods for expressing MRSA infection rates.
  • To discuss the most effective ways to describe MRSA occurrence in different clinical scenarios.
  • To provide a basis for informed decision-making regarding MRSA surveillance and control.

Summary:

  • MRSA is a significant cause of hospital-acquired infections, including wound, sepsis, and respiratory infections.
  • Comparing different metrics for MRSA rates is crucial for accurate epidemiological assessment.
  • The study critically analyzes how best to quantify and report MRSA prevalence to reflect its true impact.

Impact:

  • Improved understanding of MRSA epidemiology through standardized reporting.
  • Potential for enhanced infection control strategies and resource allocation.
  • Better data-driven approaches to combatting MRSA in hospital environments.