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Related Concept Videos

Antimicrobial Effectiveness01:28

Antimicrobial Effectiveness

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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...
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Chemicals play important roles in controlling microbial growth by targeting microbial structures and functions as sanitizers, antiseptics, disinfectants, and sterilants.Alcohols are commonly used sanitizers, effectively disrupting lipid membranes, which compromises cell integrity. They are also used as antiseptics and disinfectants due to their rapid action and versatility.Phenols and their derivatives phenolics , known for denaturing proteins and disrupting cell membranes, are particularly...
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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.
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Silver Nanoclusters with Broad-Spectrum Antibacterial Properties.

India J Cook1, Maria Eleni Kyriazi2, Myron Christodoulides3,4

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Silver nanoclusters coated with MNBA show broad-spectrum antibacterial activity against resistant bacteria. This nanoparticle customization offers a promising strategy to combat the growing threat of antimicrobial resistance.

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Area of Science:

  • Nanotechnology
  • Microbiology
  • Antimicrobial Resistance

Background:

  • Antibiotic resistance poses a critical global health challenge.
  • Novel strategies are essential to combat bacterial infections effectively.

Purpose of the Study:

  • To evaluate the bactericidal activity of silver nanoclusters (AgNCs) coated with 5-mercapto-2-nitrobenzoic acid (MNBA).
  • To assess the efficacy of MNBA-AgNCs against key bacterial pathogens.

Main Methods:

  • An in vitro bactericidal assay was employed.
  • Testing was performed against Gram-negative and Gram-positive ESKAPEE bacteria.
  • Evaluation included bacteria from the WHO Priority Pathogen List.

Main Results:

  • Small silver nanoclusters (AgNCs) coated with MNBA demonstrated significant bactericidal activity.
  • The MNBA-AgNCs were effective against a broad spectrum of bacteria.
  • Activity was confirmed against ESKAPEE pathogens and WHO priority bacteria.

Conclusions:

  • MNBA-AgNCs exhibit broad-spectrum antibacterial properties.
  • Nanoparticle customization is crucial for developing new antimicrobial resistance strategies.
  • This approach holds potential for combating global antimicrobial resistance.