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Related Concept Videos

Modified-Release Drug Delivery Systems: Site-Targeted01:24

Modified-Release Drug Delivery Systems: Site-Targeted

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Site-targeted drug delivery systems enhance therapeutic efficacy while minimizing systemic toxicity and treatment costs. Unlike conventional methods, these systems ensure precise drug delivery, improving bioavailability and reducing side effects. Targeted drug delivery is classified into three levels. First-order targeting directs drugs to the capillary beds of specific organs or tissues. Second-order targets specific cell types, such as tumor cells, using receptor-mediated interactions.
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Site-Targeted Drug Delivery Systems: Polymeric Carriers01:24

Site-Targeted Drug Delivery Systems: Polymeric Carriers

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Polymeric carriers enhance targeted drug delivery by increasing efficacy while minimizing off-target effects. These carriers comprise a biodegradable polymeric backbone integrated with functional elements that enable targeting, improve physicochemical properties, and regulate drug release.Targeting MechanismsThe targeting ability of polymeric carriers is mediated by a homing device, which is a molecular recognition component designed to selectively bind to specific tissues or cells. Monoclonal...
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Drug delivery methods like oral inhalation, nasal sprays, transdermal patches, eye drops, intravitreal injection,  and rectal administration provide localized effects with reduced toxicity.
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Modified-Release Drug Delivery Systems: Stimuli-Activated01:30

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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...
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Modified-Release Drug Delivery Systems: Classification01:23

Modified-Release Drug Delivery Systems: Classification

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Modified-release drug delivery systems improve drug efficacy and minimize side effects by controlling the rate and location of drug release. These systems fall into three categories: rate-programmed, stimuli-activated, and site-targeted.Rate-programmed systems release drugs at a predetermined rate, maintaining consistent therapeutic levels and reducing fluctuations that could lead to toxicity or subtherapeutic effects. These systems use polymeric matrices, reservoir-based designs, or osmotic...
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An Adoptive Transfer Model of Rheumatoid Arthritis in Mice
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Nanoparticle Delivery Systems in Rheumatoid Arthritis: More Than Vehicles.

Keyi Zhang1,2,3, Yixue Guo1,2,3, Xianghu Zeng1,2,3

  • 1Department of Laboratory Medicine, West China Hospital, Sichuan University, Chengdu 610041, China.

Sichuan Da Xue Xue Bao. Yi Xue Ban = Journal of Sichuan University. Medical Science Edition
|April 23, 2026
PubMed
Summary
This summary is machine-generated.

Nanoparticle drug delivery enhances rheumatoid arthritis (RA) treatment by overcoming limitations of current therapies. This review explores advanced nanoparticle strategies targeting the disease microenvironment for improved efficacy and safety.

Keywords:
Controlled releaseDrug deliveryNanoparticleReviewRheumatoid arthritis

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Area of Science:

  • Nanomedicine
  • Drug Delivery Systems
  • Rheumatology

Background:

  • Rheumatoid arthritis (RA) is a widespread autoimmune disease causing progressive joint damage and disability.
  • Current RA therapies face challenges like poor solubility, stability, and toxicity.
  • Nanoparticle drug delivery presents a promising approach to address these limitations.

Purpose of the Study:

  • To systematically review recent advancements in nanoparticle drug delivery for RA treatment.
  • To analyze strategies based on three distinct mechanisms.
  • To highlight interactions with the disease microenvironment and systemic effects.

Main Methods:

  • Literature review of nanoparticle-based drug delivery systems for RA.
  • Analysis of design rationales and therapeutic principles.
  • Evaluation of effects on disease microenvironment and systemic biodistribution.

Main Results:

  • Nanoparticles improve drug solubility, stability, and permeability for RA treatment.
  • Controlled-release mechanisms enhance therapeutic efficacy and reduce toxicity.
  • Targeted delivery to the disease microenvironment optimizes treatment outcomes.

Conclusions:

  • Nanoparticle drug delivery offers a significant advancement in managing rheumatoid arthritis.
  • These systems provide a versatile platform for overcoming therapeutic challenges.
  • Further research into nanoparticle-drug interactions is crucial for clinical translation.