Related Experiment Video

Updated: Jun 25, 2026

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

Subcutaneous Infection of Methicillin Resistant Staphylococcus Aureus (MRSA)

Published on: February 9, 2011

[Analysis of factors affecting long-term administration of anti-methicillin resistant Staphylococcus aureus (MRSA)

Hiroyuki Hayashi1, Takashi Matsuzaki, Yasuko Mizuno

  • 1Department of Pharmacy, Yokohama City Seibu Hospital, St. Marianna University, Yokohama, Japan. hayashi8@marianna-u.ac.jp

Yakugaku Zasshi : Journal of the Pharmaceutical Society of Japan
|March 3, 2009
PubMed

Insights

Long-term treatment with anti-MRSA drugs like arbekacin sulfate (ABK) is often necessary for patients with low albumin levels. Careful consideration of treatment and nutrition is crucial for effective drug use.

Area of Science:

  • Infectious Diseases
  • Pharmacology
  • Clinical Medicine

Background:

  • Methicillin-resistant Staphylococcus aureus (MRSA) poses a significant treatment challenge.
  • Long-term administration of anti-MRSA drugs requires careful patient selection and management.
  • Arbekacin sulfate (ABK), vancomycin hydrochloride (VCM), and teicoplanine (TEIC) are key agents for MRSA infections.

Purpose of the Study:

  • To identify factors influencing the need for long-term anti-MRSA drug therapy.
  • To establish an index for guiding long-term treatment decisions for MRSA infections.
  • To evaluate the impact of patient characteristics on treatment duration.

Main Methods:

  • Retrospective analysis of 71 adult patients receiving ABK, VCM, or TEIC.
  • Univariate and multivariate logistic regression analyses were performed.
  • Key variables analyzed included immunosuppressive agent use, albumin levels, CRP, %STAB, and time to blood drug level measurement.

Main Results:

  • Only 31% (22 out of 71) of patients received treatment for 14 days or longer.
  • Low albumin levels (≤2.5 g/dL) were identified as a significant predictor for long-term treatment necessity (p=0.03).
  • Elevated C-reactive protein (CRP) levels (>or==10 mg/dL) also showed a trend towards significance (p=0.01).

Conclusions:

  • Low serum albumin levels are a critical factor indicating the need for cautious long-term anti-MRSA therapy.
  • Integrated management of treatment and nutritional support is essential for patients requiring prolonged drug administration.
  • Optimizing early blood drug level monitoring is crucial for appropriate and effective use of anti-MRSA agents.

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...
Pharmacokinetic–Pharmacodynamic Relationship: Influence of Elimination Half-Life on Effect Duration01:23

Pharmacokinetic–Pharmacodynamic Relationship: Influence of Elimination Half-Life on Effect Duration

Drug elimination from the body primarily occurs through metabolic and excretion pathways. Hepatic metabolism transforms lipophilic drugs into hydrophilic forms for excretion, typically via enzymatic processes classified as phase I (modification) and phase II (conjugation). Renal excretion eliminates drugs and metabolites through filtration and secretion in the kidneys. Impairment in liver or kidney function can hinder these processes, delaying drug clearance and extending the drug’s half-life.
Combined Effects of Drugs: Synergism01:27

Combined Effects of Drugs: Synergism

Synergism is a useful mechanism where combining two or more drugs is more effective than each constituent used alone. Such combinations are also called supra-additive interactions. The drugs collectively enhance the final therapeutic effect by acting on different targets. Another advantage is that the low dose of each constituent drug is sufficient to achieve the desired effect. This helps reduce the duration of therapy and lower the adverse effects of these drugs.
Such synergistic combinations...
Antimicrobial Effectiveness01:28

Antimicrobial Effectiveness

The effectiveness of antimicrobial agents depends on various factors influencing their ability to eliminate microbial populations. Larger microbial populations require more time for complete eradication, emphasizing the importance of population size analysis when evaluating antimicrobial efficacy.Microbial resistance to antimicrobial agents varies significantly. Highly resilient microorganisms include endospores, gram-negative bacteria, and non-enveloped viruses, while prions are exceptionally...
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...