Related Experiment Video

Updated: Mar 25, 2026

Quantifying the Cytotoxicity of Staphylococcus aureus Against Human Polymorphonuclear Leukocytes
12:27

Quantifying the Cytotoxicity of Staphylococcus aureus Against Human Polymorphonuclear Leukocytes

Published on: January 3, 2020

6.9K

Eugenol Provokes ROS-Mediated Membrane Damage-Associated Antibacterial Activity Against Clinically Isolated

Balaram Das1, Debasis Mandal1, Sandeep Kumar Dash1

  • 1Immunology and Microbiology Laboratory, Department of Human Physiology with Community Health, Vidyasagar University, Midnapore, West Bengal, India.

Infectious Diseases
|February 27, 2016
PubMed

Insights

Eugenol shows promise as a new treatment for Staphylococcus aureus infections resistant to vancomycin. This natural compound effectively eliminates resistant strains by damaging their membranes and generating reactive oxygen species.

Area of Science:

  • Microbiology
  • Pharmacology
  • Infectious Diseases

Background:

  • Antibiotic resistance in Staphylococcus aureus, particularly to vancomycin, is a growing global health concern.
  • Vancomycin is a critical last-resort antibiotic for treating S. aureus infections, making resistance a significant therapeutic challenge.

Purpose of the Study:

  • To evaluate the antibacterial activity of eugenol against clinical isolates of vancomycin-resistant Staphylococcus aureus (VRSA).
  • To investigate the mechanisms by which eugenol exerts its antimicrobial effects on VRSA.

Main Methods:

  • Isolation and identification of Staphylococcus aureus from clinical pus samples.
  • Antimicrobial susceptibility testing to determine vancomycin resistance.
  • Assessment of eugenol's antibacterial activity and its killing mechanisms, including reactive oxygen species generation and membrane damage.

Main Results:

  • Out of 36 pus samples, 20 S. aureus strains were identified, with 6 exhibiting resistance to vancomycin.
  • Eugenol demonstrated significant antibacterial activity against these vancomycin-resistant S. aureus strains.
  • The study identified reactive oxygen species generation and membrane damage as key mechanisms of eugenol's action.

Conclusions:

  • Eugenol exhibits potent bactericidal activity against vancomycin-resistant Staphylococcus aureus.
  • Eugenol represents a potential therapeutic candidate for treating infections caused by multidrug-resistant S. aureus.
  • Further research and development are warranted to explore eugenol as a viable alternative antimicrobial agent.
Keywords:
Staphylococcus aureusVRSAantibacterialeugenolreactive oxygen species

More Related Videos

Improved Enzyme Protection Assay to Study Staphylococcus aureus Internalization and Intracellular Efficacy of Antimicrobial Compounds06:36

Improved Enzyme Protection Assay to Study Staphylococcus aureus Internalization and Intracellular Efficacy of Antimicrobial Compounds

Published on: September 8, 2021

3.3K
Evaluation of Antimicrobial Activities of Nanoparticles and Nanostructured Surfaces In Vitro11:52

Evaluation of Antimicrobial Activities of Nanoparticles and Nanostructured Surfaces In Vitro

Published on: April 21, 2023

4.1K

Related Concept Videos

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...
1.9K
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...
60
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...
33
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...
25
Hand hygiene01:23

Hand hygiene

Asepsis is the practice of preventing or breaking the chain of infection. The nurse employs aseptic techniques to prevent the spread of microorganisms and reduce the risk of diseases. Hand hygiene is the cornerstone of aseptic techniques and is classified into medical and surgical asepsis. Medical asepsis includes hand hygiene and the use of gloves. Surgical asepsis, or the sterile technique, refers to practices that render and keep objects and areas free of microorganisms.
Hand washing...
6.5K
Gene Regulation in Microbial Communities: Quorum Sensing01:28

Gene Regulation in Microbial Communities: Quorum Sensing

Quorum sensing is a mechanism of bacterial communication that enables coordinated gene expression in response to changes in population density. This facilitates collective behaviors that enhance survival, resource acquisition, and ecological adaptation. This process relies on small signaling molecules called autoinducers that accumulate as bacterial populations grow. When a critical threshold concentration of autoinducers is reached, bacterial cells collectively modify gene expression,...
863