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Fabricating Superhydrophobic Polymeric Materials for Biomedical Applications
Published on: August 28, 2015
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Diatom Silica for Biomedical Applications: Recent Progress and Advances
Shaheer Maher1, Tushar Kumeria2, Moom Sin Aw1
1School of Chemical Engineering, The University of Adelaide, Engineering North Building, 5005, Adelaide, Australia.
Advanced Healthcare Materials
|August 18, 2018
Summary
Diatom frustules, natural silica shells from algae, offer a sustainable alternative to synthetic silica for drug delivery and other biomedical uses due to their unique porous structure and biocompatibility. This review explores their potential in medicine.
Area of Science:
- Biomaterials Science
- Nanotechnology
- Biomedical Engineering
Background:
- Diatoms are unicellular algae producing intricate silica shells called frustules.
- Diatom frustules possess unique properties: high surface area, biocompatibility, and chemical stability.
- Diatomaceous earth (DE), fossilized diatom frustules, is an abundant, natural silica source.
Purpose of the Study:
- To provide a comprehensive review of natural diatom silica (DE) in biomedical applications.
- To focus on DE's role in drug delivery systems.
- To highlight other biomedical uses such as biosensing, tissue engineering, and hemostatic agents.
Main Methods:
- Review of existing literature on diatom silica and its biomedical applications.
- Discussion of DE material properties: purification, surface functionalization, biocompatibility, and cellular uptake.
- Analysis of DE's suitability as a drug delivery vehicle.
Main Results:
- DE silica exhibits excellent biocompatibility and tailorable surface chemistry for drug loading.
- Its porous structure facilitates controlled release of therapeutic agents.
- DE shows promise in biosensing, tissue engineering scaffolds, and as a clotting agent.
Conclusions:
- Natural diatom silica (DE) is a viable, sustainable alternative to synthetic silica for diverse biomedical applications.
- DE's unique nanostructure and properties make it highly suitable for advanced drug delivery systems.
- Further research into DE functionalization and in vivo performance will enhance its clinical translation.
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