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Biodegradable polymeric matrices for bioartificial implants.

¹Chemical Engineering Department, Hacettepe University, Beytepe, Ankara, Turkey. piskin@hacettepe.edu.tr

The International Journal of Artificial Organs

|June 21, 2002

Summary

Biomaterials are crucial for tissue repair, but natural tissues have limitations. Tissue engineering offers a promising alternative using cells and polymer matrices for bioartificial implants.

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Area of Science:

Biomaterials Science
Regenerative Medicine
Tissue Engineering

Background:

Biomaterials (polymers, metals, ceramics) are used as implants for tissue restoration.
Synthetic biomaterials offer simpler functions compared to natural tissues.
Natural tissues face limitations: donor shortage, immunogenicity, disease transmission, and ethical concerns.

Purpose of the Study:

To explore tissue engineering as an alternative to traditional biomaterials and natural tissues.
To highlight the use of cells and supporting matrices in creating bioartificial implants.
To discuss the advantages of tissue engineering over conventional methods for tissue repair and replacement.

Main Methods:

Utilizing healthy mammalian cells, including stem cells and genetically modified cells.
Employing supporting matrices made of natural or synthetic polymers.
Investigating both closed systems (microcapsules, hollow fibers) for immunoprotection and open systems.
Using biodegradable polymers for autogenic cell-loaded implants.

Main Results:

Tissue engineering combines cells with matrices to create composite bioartificial implants.
Closed matrices provide immunoprotection for transplanted cells.
Biodegradable polymers are suitable for implants using autogenic cells.

Conclusions:

Tissue engineering presents a viable solution to overcome the limitations of natural tissues and simple synthetic biomaterials.
The development of advanced bioartificial implants holds significant potential for restoring complex tissue functions.
Further research in cell sources, matrix materials, and system designs will advance the field of regenerative medicine.

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