Related Experiment Videos
Flow conductivity of rat dermis is determined by hydration
1Department of Chemical Engineering, University of British Columbia, Vancouver, Canada.
Biorheology
|January 1, 1995
Summary
Dermal flow conductivity decreases with increasing pressure due to tissue compaction. Hyaluronan and collagen remained stable, indicating pressure-induced changes in flow resistance.
Area of Science:
- Biomedical Engineering
- Dermatology
- Fluid Dynamics
Background:
- Dermal tissue properties influence fluid flow.
- Hyaluronan and collagen are key determinants of dermal resistance.
- Understanding flow dynamics is crucial for drug delivery and tissue engineering.
Purpose of the Study:
- To measure phosphate buffered saline flow rate through dermis.
- To investigate the relationship between applied pressure and flow conductivity.
- To characterize the role of tissue compaction in hydraulic flow.
Main Methods:
- Flow rate measurement of phosphate buffered saline through dermis.
- Application of varying pressures over two days.
- Analysis using Darcy's Law to determine flow conductivity.
- Quantification of hyaluronan and collagen content.
Main Results:
- Flow conductivity ranged from 2 to 6 x 10(-12) cm4/dyn x s.
- Hydraulic flow conductivity decreased with increasing applied pressure.
- No loss of hyaluronan or collagen was observed during experiments.
- Tissue compaction was found to be proportional to applied pressure.
Conclusions:
- Dermal hydraulic flow conductivity is pressure-dependent.
- Tissue compaction, driven by applied pressure, alters flow resistance.
- The structural integrity of hyaluronan and collagen is maintained under experimental conditions.