Related Experiment Video
Updated: Jul 17, 2026
11:56
Fabrication and Operation of an Oxygen Insert for Adherent Cellular Cultures
Published on: January 6, 2010
9.7K
Advances in oxygen-releasing matrices for regenerative engineering applications
Yihong Zeng1, Can Yan1, Guobao Chen2
1School of Pharmacy and Bioengineering, Chongqing University of Technology, Banan District, No. 69 Hongguang Avenue, Chongqing, 400054, P.R. China.
Medical & Biological Engineering & Computing
|April 4, 2025
Summary
Oxygen-releasing materials offer a safer alternative to hyperbaric oxygen for tissue repair by providing localized oxygen. This review details their preparation, applications, and challenges in tissue engineering.
Area of Science:
- Tissue Engineering
- Biomaterials Science
- Regenerative Medicine
Background:
- Hypoxia significantly impacts tissue repair, driving research into oxygen supply strategies.
- Oxygen-releasing materials provide localized oxygen, offering a safer alternative to hyperbaric oxygen (HBO) by avoiding oxidative stress in healthy tissues.
- Current reviews focus on principles, lacking comprehensive coverage of preparation methods and applications.
Purpose of the Study:
- To review various types of oxygen-releasing materials for tissue repair.
- To discuss their structures, preparation methods, applications, and current development status.
- To identify challenges and future directions in the field.
Main Methods:
- Review of existing literature on oxygen-releasing materials.
- Categorization of materials based on form (hydrogels, microspheres, layers).
- Analysis of material properties, oxygen release mechanisms, and biological effects.
Main Results:
- Oxygen-releasing materials demonstrate potential for enhanced tissue repair through sustained, localized oxygen delivery.
- Different material formats (hydrogels, microspheres, layers) offer unique advantages in terms of oxygen release kinetics and integration with defective tissues.
- Key challenges include material cytotoxicity and limited oxygen release duration.
Conclusions:
- Oxygen-releasing materials are a promising strategy for improving tissue repair in engineered constructs.
- Further research is needed to optimize preparation methods, enhance oxygen release longevity, and mitigate cytotoxicity.
- Development of advanced oxygen-releasing materials will be crucial for future regenerative medicine applications.
Related Concept Videos
01:30Environmental Applications of Microorganisms
Microorganisms play a pivotal role in maintaining ecosystem balance by recycling essential elements such as carbon, nitrogen, and phosphorus, as well as supporting processes like bioremediation, wastewater treatment, and biofuel production.Microbes in Elemental CyclesIn the carbon cycle, microorganisms decompose organic matter, releasing carbon dioxide via aerobic respiration. This carbon dioxide is subsequently used by photosynthetic organisms to synthesize organic compounds, closing the...
01:23Microbial Fuel Cells
Microbial fuel cells (MFCs) are bioelectrochemical devices that generate electricity by exploiting the metabolic processes of electrogenic bacteria. These systems provide a renewable energy source and serve as an innovative method for treating organic waste, such as wastewater.A typical MFC consists of two chambers: an anoxic (oxygen-free) compartment that houses the bacteria and an oxic (oxygen-rich) compartment that contains oxygen as the terminal electron acceptor. Many MFCs use proton...
01:29Bioreactor Design and Operational System
Bioreactors are engineered vessels designed to cultivate microorganisms under controlled conditions for industrial bioprocessing. They maintain sterility and allow precise regulation of pH, temperature, oxygen, and nutrient levels to optimize microbial growth and metabolite production. Bioreactors range from small laboratory units of 1 liter to industrial systems holding up to 500,000 liters, though only about 75% of their volume is actively used for fermentation. The remaining headspace...
01:28Bioreactor Controls-I
Maintaining optimal conditions within fermenters is essential for maximizing microbial productivity and ensuring process efficiency. This lesson focuses on key parameters—temperature, foam, pH, carbon dioxide, oxygen, and pressure—and their precise measurement and control strategies in fermentation systems.Temperature ControlTemperature regulation is critical due to the exothermic nature of many fermentation processes. In small laboratory fermenters, temperature is commonly monitored using...
01:18Bioreactor Controls-II
In aerobic fermentations, oxygen is vital for microbial growth and metabolite production. Since air comprises only about 20% oxygen and the gas is poorly soluble in water—just 9 ppm at 20°C—supplying sufficient oxygen becomes a critical challenge, especially in high-demand processes like yeast growth or citric acid production. Even a fully saturated broth may offer only a few seconds of oxygen availability.To address this, sterile or scrubbed air is introduced into the fermentor via a sparger...