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Related Experiment Video

Updated: Feb 9, 2026

Decellularization and Recellularization of Whole Livers

Decellularization and Recellularization of Whole Livers

Published on: February 4, 2011

Water absorption by decellularized dermis.

Yongwei Zhang¹, Takuya Iwata¹, Kwangwoo Nam¹

¹Department of Material-based Medical Engineering, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, 2-3-10 Kanda-Surugadai, Chiyoda-ku, Tokyo 101-0062, Japan.

|June 5, 2018

Summary

Decellularized dermis absorbs water differently than hydrogels due to collagen fibril gaps. This unique water absorption behavior impacts its use in biomaterials.

Keywords:

Bioengineering Materials science

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Area of Science:

Biomaterials Science
Tissue Engineering
Materials Science

Background:

Understanding water absorption is crucial for designing biomaterials, particularly decellularized tissues.
Native dermis and synthetic hydrogels exhibit distinct water absorption properties.
Sodium dodecyl sulfate (SDS) treatment alters dermal structure, potentially affecting water uptake.

Purpose of the Study:

To investigate and compare the water absorption characteristics of decellularized dermis with biopolymer and synthetic polymer hydrogels.
To elucidate the relationship between dermal structure, specifically collagen fibril gaps, and water absorption.
To analyze the kinetics and mechanisms of water diffusion in decellularized dermis.

Main Methods:

Porcine dermis was decellularized using an aqueous sodium dodecyl sulfate (SDS) solution.
Histological evaluation was performed to assess structural changes, focusing on collagen fibril gaps.
Water absorption experiments were conducted on decellularized dermis, glutaraldehyde-crosslinked gelatin, and poly(acrylamide) hydrogels.

Main Results:

SDS treatment created larger gaps between collagen fibrils in the decellularized dermis.
Decellularized dermis exhibited low water absorptivity, with absorption following Fick's second law.
Water diffusion in decellularized dermis occurred in two steps: rapid absorption into gaps, followed by slow absorption into collagen fibers, differing from hydrogel behavior.

Conclusions:

The presence of larger gaps in decellularized dermis significantly influences its water absorption capacity and kinetics.
Decellularized dermis absorbs more water than native dermis and demonstrates distinct water absorption behavior compared to gelatin and poly(acrylamide) hydrogels.
The structural modifications induced by decellularization are key determinants of water interaction in dermal biomaterials.