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Content Provider | The American Society of Mechanical Engineers (ASME) Digital Collection |
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Author | Gao, Xin Meng, Lingtu Chun-Yuh, C. Huang Gu, Weiyong |
Copyright Year | 2013 |
Abstract | Proteoglycans (PGs) are one of the major components in the extracellular matrix (ECM) of cartilage, and are negatively charged due to the charged groups attached to their backbone (i.e., fixed charge groups). PGs play substantial roles in the mechanical, biotransport and electrical events within the tissue.3,7 More specifically, swelling pressure generated by the interaction between fixed charge groups and ionic interstitial fluid enhances cartilage’s capacity of load-bearing. In addition, biotransport properties (e.g., hydraulic permeability) and electrical properties (e.g., electrical conductivity) have been shown to be affected by water content (i.e., porosity) and fixed charge density (FCD).2–4 The alteration of proteoglycan content will affect the tissue FCD and water content, which could cause the changes in biomechanical, biotransport and electrical properties of the cartilage. The relationship between the PG content and biomechanical properties has been widely studied,6,8 but the knowledge on the effects of PG content on biotransport and electrical properties is limited.1 It is not clear whether the dependences of biotransport and electrical properties on PG content are mainly due to electric effects through the FCD associated with PGs or due to hindrance effects related to the effective pore size (i.e., water content) of the tissue. Therefore, the objectives of this study were (1) to investigate the effects of PG content on cartilage biotransport and electrical properties, (2) to analyze whether these effects are caused by changes of water content or FCD. |
Sponsorship | Bioengineering Division |
File Format | |
ISBN | 9780791855607 |
DOI | 10.1115/SBC2013-14645 |
Volume Number | Volume 1A: Abdominal Aortic Aneurysms; Active and Reactive Soft Matter; Atherosclerosis; BioFluid Mechanics; Education; Biotransport Phenomena; Bone, Joint and Spine Mechanics; Brain Injury; Cardiac Mechanics; Cardiovascular Devices, Fluids and Imaging; Cartilage and Disc Mechanics; Cell and Tissue Engineering; Cerebral Aneurysms; Computational Biofluid Dynamics; Device Design, Human Dynamics, and Rehabilitation; Drug Delivery and Disease Treatment; Engineered Cellular Environments |
Conference Proceedings | ASME 2013 Summer Bioengineering Conference |
Language | English |
Publisher Date | 2013-06-26 |
Publisher Place | Sunriver, Oregon, USA |
Access Restriction | Subscribed |
Subject Keyword | Water Electrical conductivity Electrical properties Biological tissues Bearings Permeability Density Pressure Stress Biomechanics Cartilage Fluids Biotransport Porosity |
Content Type | Text |
Resource Type | Article |
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