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Related Concept Videos

Modified-Release Drug Delivery Systems: Stimuli-Activated01:30

Modified-Release Drug Delivery Systems: Stimuli-Activated

Stimuli-activated drug delivery systems are designed to release drugs in response to specific physical, chemical, or biological stimuli. These systems often utilize hydrogels—three-dimensional, hydrophilic polymer networks capable of swelling in aqueous environments and retaining significant fluid volumes. Upon exposure to particular stimuli, these hydrogels undergo structural transitions that allow the embedded drug to be released. Due to this adaptive behavior, such systems are also called...
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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...

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Nanoparticle-mediated stimulus-responsive antibacterial therapy.

Neelanjana Bag1, Souravi Bardhan1,2, Shubham Roy1,3

  • 1Department of Physics, Jadavpur University, Kolkata-700032, India. sdasphysics@gmail.com.

Biomaterials Science
|February 7, 2023
PubMed
Summary
This summary is machine-generated.

Stimulus-responsive nanoparticles offer a novel approach to combat multidrug-resistant (MDR) bacteria and biofilms by enabling targeted antibiotic release. This strategy overcomes limitations of conventional therapies and traditional nanoparticle delivery systems.

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Area of Science:

  • Biomedical Engineering
  • Nanotechnology
  • Pharmacology

Background:

  • Conventional antibacterial therapies face limitations due to increasing multidrug-resistant (MDR) microorganisms.
  • Nanoparticle-mediated drug delivery shows promise for antibacterial treatment but suffers from overuse and side effects.
  • Stimulus-responsive antibiotic delivery offers site-specific drug release to overcome these limitations.

Purpose of the Study:

  • To review the advancements and challenges in stimulus-responsive nanoparticles for antibacterial applications.
  • To highlight the potential of these systems in eradicating MDR strains and biofilms.
  • To discuss future prospects of stimulus-responsive nanoparticle technology.

Main Methods:

  • Review of existing literature on nanoparticle-based drug delivery systems.
  • Analysis of stimulus-responsive nano-formulations triggered by intrinsic, extrinsic, and bacterial stimuli.
  • Exploration of selective therapeutic cargo release using stimuli like light, sound, pH, and magnetic fields.

Main Results:

  • Stimulus-responsive nanoparticles enable precise control over drug release, minimizing side effects.
  • These systems are effective in targeting and eradicating MDR bacteria and biofilms.
  • Various stimuli can be harnessed to achieve site-specific drug delivery.

Conclusions:

  • Stimulus-responsive nanoparticles represent a significant advancement in combating antibacterial resistance.
  • Further research and development are needed to overcome current challenges and realize the full potential of this technology.
  • This approach holds great promise for future antibacterial therapeutics, particularly for complex infections involving biofilms.