Studies on sorbents for use in a hepatic support system.

Area of Science:

• Biomaterials Science
• Chemical Engineering
• Medical Technology

Background:

• Human plasma contains various toxins and waste products that require removal for therapeutic purposes.
• Fatty acids, bilirubin, and bromosulfalein are examples of substances that can accumulate in plasma.
• Effective removal of these substances is crucial for detoxification therapies.

Purpose of the Study:

• To investigate the efficacy of different adsorbent and ion exchange materials for removing specific solutes from human plasma.
• To determine the influence of sorbent particle size on the kinetics of removing protein-bound substances.
• To present a novel system for utilizing small particle size sorbents in extracorporeal detoxification.

Main Methods:

• Screening of various adsorbent and ion exchange materials.
• Sorption experiments using human plasma spiked with hexanoic acid, octanoic acid, oleic acid, bilirubin, and bromosulfalein.
• Kinetic analysis of solute removal based on sorbent particle size.
• Development and presentation of a detoxification system design.

Main Results:

• Multiple adsorbent and ion exchange materials demonstrated sorption capabilities for the tested substances.
• Sorbent particle size was identified as a critical factor influencing the kinetics of removal, particularly for strongly protein-bound substances.
• The study highlights the feasibility of using small particle size bioincompatible sorbents.

Conclusions:

• Adsorbent and ion exchange materials show promise for plasma detoxification.
• Optimizing sorbent particle size is essential for efficient removal of protein-bound toxins.
• The presented system offers a potential approach for enhanced extracorporeal detoxification.