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Related Concept Videos

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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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: Rate-Programmed II01:19

Modified-Release Drug Delivery Systems: Rate-Programmed II

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Rate-programmed drug delivery systems release drugs in a controlled manner to maintain therapeutic levels. Three main designs include reservoir, matrix, and hybrid systems.Reservoir systems consist of a drug core enclosed within a membrane that controls drug release. In non-swelling reservoir systems, polymers like ethyl cellulose or polymethacrylates are used. These do not hydrate in aqueous media and control release through membrane thickness, porosity, or insolubility. This type includes...
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Injectable Supramolecular Polymer-Nanoparticle Hydrogels for Cell and Drug Delivery Applications
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Hydrogels-Advanced Polymer Platforms for Drug Delivery.

Rodica Ene Vatcu1, Andreea-Teodora Iacob2, Iuliu Fulga1

  • 1Research Centre in the Medical-Pharmaceutical Field, Faculty of Medicine and Pharmacy, "Dunarea de Jos" University of Galati, 35 AL Cuza Street, 800010 Galati, Romania.

Polymers
|March 28, 2026
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Summary
This summary is machine-generated.

Smart hydrogels offer advanced drug delivery solutions with controlled release for various conditions. These versatile platforms integrate with biosensors for real-time monitoring and on-demand therapeutic applications.

Keywords:
biomedical applicationsdrug deliveryhydrogelspolymeric platformsstimuli-responsive

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Area of Science:

  • Polymer Science and Biomaterials Engineering
  • Drug Delivery Systems
  • Nanotechnology in Medicine

Background:

  • Hydrogels are extensively studied as polymeric platforms for drug delivery due to their 3D hydrophilic structure, tunable properties, and biocompatibility.
  • Optimizing drug administration for spatiotemporal control of active substance release is crucial for modern therapies.
  • Challenges remain in clinical translation and ensuring long-term performance of drug delivery systems.

Purpose of the Study:

  • To present an integrated analysis of hydrogels for drug administration.
  • To discuss physicochemical fundamentals, polymeric materials, and stimulus-responsive mechanisms.
  • To highlight recent advancements and future directions in smart hydrogel technology.

Main Methods:

  • Review of recent experimental studies on natural, synthetic, and hybrid polymer-based hydrogels.
  • Analysis of advanced functionalization strategies for adaptive responses to physiological stimuli (pH, temperature, glucose, enzymes, ROS).
  • Exploration of emerging integrations with biosensors, microdevices, and wireless systems.

Main Results:

  • Hydrogels enable controlled and targeted drug release via various administration routes (oral, injectable, transmucosal, topical).
  • Smart hydrogels demonstrate adaptive responses to specific physiological triggers.
  • Integration with advanced technologies facilitates real-time monitoring and on-demand drug release.

Conclusions:

  • Smart hydrogels serve as multifunctional platforms for complex therapeutic strategies.
  • Further research is needed to overcome challenges in clinical translation and long-term performance.
  • Hydrogel-based drug delivery systems show significant promise for future medical applications.