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Modified-Release Drug Delivery Systems: Stimuli-Activated

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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Alternating Magnetic Field-Responsive Hybrid Gelatin Microgels for Controlled Drug Release

Alternating Magnetic Field-Responsive Hybrid Gelatin Microgels for Controlled Drug Release

Published on: February 13, 2016

Spatiotemporal controlled released hydrogels for multi-system regulated bone regeneration.

Jingxia Chen¹, Jiaxin Luo¹, Jian Feng¹

¹Department of Oral Implantology, Hospital of Stomatology, Jilin University, Changchun 130021, China; Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Hospital of Stomatology, Jilin University, Changchun 130021, China.

Journal of Controlled Release : Official Journal of the Controlled Release Society

|July 2, 2024

Summary

This summary is machine-generated.

Hydrogel scaffolds offer advanced bone defect treatment by enabling controlled, sequential drug release. This strategy optimizes the bone healing environment, promoting faster and higher quality bone regeneration.

Keywords:

Bone tissue regeneration Controlled released Hydrogel

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Area of Science:

Biomaterials Science
Tissue Engineering
Regenerative Medicine

Background:

Bone defects pose significant clinical challenges, necessitating effective scaffold materials for bone tissue regeneration.
Hydrogels are promising scaffolds due to their 3D structure, capable of loading osteogenic drugs to enhance bone formation.
Optimizing new bone formation requires balancing inflammation and vascular remodeling through strategic, sequential drug delivery.

Purpose of the Study:

To review principles of controlled release systems in sustained-release hydrogels.
To explore advancements in hydrogel multi-drug delivery systems for bone tissue regeneration.
To highlight the role of hydrogel microstructure design in achieving sequential drug release for osteosynthesis.

Main Methods:

Review of controlled release principles (swelling, physical, chemical, environmental control systems).
Analysis of hydrogel microstructure design for sequential drug release.
Examination of multi-drug delivery systems for optimizing the bone microenvironment.

Main Results:

Hydrogel microstructures can achieve sequential drug release, prolonging therapeutic action.
Controlled release systems within hydrogels optimize drug delivery for bone regeneration.
Multi-drug delivery systems facilitate spatiotemporal control, enhancing bone healing.

Conclusions:

Hydrogels are effective scaffolds for bone tissue regeneration, particularly with controlled multi-drug delivery.
Strategic sequential drug release from hydrogels is crucial for immune regulation and vascular remodeling.
Advancements in hydrogel-based drug delivery systems offer significant potential for treating bone defects.