Related Experiment Video
Updated: Jun 24, 2026
08:17
An Additive Manufacturing Technique for the Facile and Rapid Fabrication of Hydrogel-based Micromachines with Magnetically Responsive Components
Published on: July 18, 2018
7.5K
Biocompatible Stimuli-Sensitive Natural Hydrogels: Recent Advances in Biomedical Applications
Jose M Calderon Moreno1, Mariana Chelu1, Monica Popa1
1"Ilie Murgulescu" Institute of Physical Chemistry, 202 Spl. Independentei, 060021 Bucharest, Romania.
Gels (Basel, Switzerland)
|December 24, 2025
Summary
Stimuli-sensitive hydrogels made from natural polymers offer tunable properties for biomedical uses. This review covers their design, responsiveness, and applications in drug delivery and tissue regeneration.
Area of Science:
- Biomaterials Science
- Polymer Chemistry
- Biomedical Engineering
Background:
- Stimuli-sensitive hydrogels are advanced "smart" materials that dynamically respond to environmental cues.
- Natural polymers like chitosan and alginate offer biocompatibility and biodegradability, ideal for biomedical applications.
- These hydrogels are crucial for controlled drug release, tissue engineering, and biosensing.
Purpose of the Study:
- To review the principles behind natural stimuli-sensitive hydrogels.
- To highlight their design, properties, and responsiveness mechanisms.
- To discuss current biomedical applications and future research directions.
Main Methods:
- Literature review focusing on natural stimuli-sensitive hydrogels.
- Analysis of hydrogel design, stimuli-responsive mechanisms, and material properties.
- Exploration of applications in drug delivery, tissue regeneration, and wound healing.
Main Results:
- Natural stimuli-sensitive hydrogels exhibit tunable responses to pH, temperature, enzymes, and redox potential.
- These hydrogels show significant promise for controlled therapeutic agent delivery and tissue engineering.
- Advancements include enhanced biocompatibility and biodegradability, mimicking the extracellular matrix.
Conclusions:
- Natural stimuli-sensitive hydrogels are versatile biomaterials with substantial therapeutic potential.
- Further research is needed to overcome challenges and optimize their functional performance.
- These smart hydrogels pave the way for sustainable healthcare solutions.
Related Concept Videos
01:26Signal Transduction: Overview
Cells respond to many types of information, often through receptor proteins positioned on the membrane. They respond to chemical signals, such as hormones, neurotransmitters, and other signaling molecules, initiating a series of molecular reactions to produce an appropriate response. This is called signal transduction. Cells also coordinate different responses elicited by the same signaling molecule via mediators, allowing molecular cross-talk.
Typically, signal transduction involves three...
Typically, signal transduction involves three...
01:30Modified-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...