Experimental arthritis : in vitro and in vivo models Citation for published version (APA): Wang, X. (2008). Experimental arthritis : in vitro and in vivo models. [Phd Thesis 2 (Research NOT TU/e / Graduation TU/e), Biomedical Engineering]. Technische Universiteit Eindhoven. https://doi.org/10.6100/IR634844 DOI: 10.6100/IR634844 Document status and date: Published: 01/01/2008 Document Version: Publisher’s PDF, also known as Version of Record (includes final page, issue and volume numbers) Please check the document version of this publication: • A submitted manuscript is the version of the article upon submission and before peer-review. There can be important differences between the submitted version and the official published version of record. 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No part of this publication maybe reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Experimental Arthritis: in vitro and in vivo Models PROEFSCHRIFT ter verkrijging van de graad van doctor aan de Technische Universiteit Eindhoven, op gezag van de Rector Magnificus, prof.dr.ir. C.J. van Duijn, voor een commissie aangewezen door het College voor Promoties in het openbaar te verdedigen op donderdag 3 juni 2008 om 16.00 uur door Xuanhui Wang geboren te Liaoning, China Dit proefschrift is goedgekeurd door de promotor: prof.dr.ir. H.W.J. Huiskes Copromotor: dr. C.C. van Donkelaar To my daughters Lauren and Martina Thank you for being the most wonderful children in the world. For since the creation of the world God's invisible qualities—his eternal power and divine nature—have been clearly seen, being understood from what has been made, so that men are without excuse. Table of Contents Table of Contents ..............................................................................................................1 Summary ............................................................................................................................9 Chapter 1 ‐ Introduction ................................................................................................. 13 1. Introduction to Arthritis ......................................................................................... 14 1.1. Overview of OA ................................................................................................ 14 1.2. Overview of RA ................................................................................................ 14 2. Introduction of Articular Joints ............................................................................... 15 3. Introduction to Articular Cartilage and Function ................................................... 16 3.1. Chondrocytes in Articular Cartilage ................................................................. 16 4. Problems of Articular Cartilage Repair ................................................................... 18 5. Current OA Treatments .......................................................................................... 19 5.1. Medications ..................................................................................................... 19 5.2. Surgery ............................................................................................................. 19 5.3. Alternatives ..................................................................................................... 20 6. Development and Progression of OA ..................................................................... 21 6.1. Typical OA Progression .................................................................................... 21 6.2. OA as a Whole Joint Disease ........................................................................... 22 6.3. Relationship between Articular Cartilage and Subchondral Bone .................. 23 6.4. Bone Structure and Metabolism ..................................................................... 23 6.5. Bone Structure, Material, and Mechanical Properties .................................... 24 6.6. Bone Remodeling ............................................................................................ 25 6.7. Possible Initiation of OA as a Bone Disease ..................................................... 25 6.8. Anti‐resorptive Drugs as a Potential Treatment for OA .................................. 26 6.9 Development of Osteophytes .......................................................................... 27 6.10. Complexity of OA Development and Progression Pathways ......................... 27 7. Need for Animal Models ......................................................................................... 28 Page | 1 8. Objectives and outlines .......................................................................................... 29 References .................................................................................................................. 30 Chapter 2 ‐ Subchondral Bone Microarchitecture Changes in Animal Models of Arthritis Quantified by Micro‐CT .................................................................................................. 35 1. Introduction ............................................................................................................ 37 2. Bone changes in human arthritis ............................................................................ 38 3. Bone changes in OA animal models ....................................................................... 38 4. Micro‐CT imaging in arthritis ................................................................................. 39 5. Methodology of using micro‐CT in arthritis research ............................................. 40 5.1 Sample preparation: ......................................................................................... 40 5.2 Scanning procedures: ....................................................................................... 41 5.3 Reconstruction: ................................................................................................ 41 5.4 Three‐dimensional analysis .............................................................................. 42 5.5 Three‐dimensional isosurfaces ......................................................................... 42 6. Cartilage imaging using micro‐CT and micro MRI .................................................. 46 7. The future of using micro‐CT in arthritis research ................................................. 46 References .................................................................................................................. 48 Chapter 3 ‐ Tissue Engineering of Biphasic Cartilage Constructs Using Various Biodegradable Scaffolds: an in vitro Study ..................................................................... 51 1. Introduction ............................................................................................................ 53 2. Materials and methods .......................................................................................... 54 2.1. Articular chondrocyte isolation ....................................................................... 54 2.2. Chamber seeding and construct formation .................................................... 54 2.3. Histological evaluation .................................................................................... 56 2.4. Confocal laser scanning microscopy (CLSM) cell viability (live/dead assay) ... 56 2.5. Immunohistochemical staining for collagen types I, II and X .......................... 56 2.6. Biochemical analyses (SDS‐PAGE) ................................................................... 56 2.7. Transmission electron microscopy (TEM) ....................................................... 57 2.8. Scanning electron microscopy (SEM) .............................................................. 57 3. Results .................................................................................................................... 57 Page | 2 3.1. Macroscopic and histological observations..................................................... 57 3.2. Cell viability ...................................................................................................... 59 3.3. Biochemistry and immunohistochemistry ...................................................... 60 3.4. Transmission electron microscopy .................................................................. 60 3.5. Scanning electron microscopy (SEM) .............................................................. 61 4. Discussion ............................................................................................................... 63 5. Conclusions ............................................................................................................. 65 Acknowledgements .................................................................................................... 65 References .................................................................................................................. 66 Chapter 4 ‐ Disease‐Modifying Effects of N‐butyryl Glucosamine in a Streptococcal Cell Wall (SCW) Induced Arthritis Model in Rats ................................................................... 69 1. Introduction ............................................................................................................ 71 2. Materials and Methods .......................................................................................... 73 2.1 Animal model and experiment design. ............................................................ 73 2.2 Bone mineral density (BMD) measurement. .................................................... 74 2.3 Micro‐CT imaging protocol. .............................................................................. 74 2.4 Three‐dimensional trabecular bone measurements. ....................................... 74 2.5 Three‐dimensional isosurface. ......................................................................... 75 2.6 Two‐dimensional subchondral bone analysis. ................................................. 75 2.7 Statistical analysis. ............................................................................................ 76 3. Results .................................................................................................................... 76 3.1 Effects of GlcNBu on the SCW‐induced inflammation. .................................... 76 3.2 Decline of BMD by the arthritis and reversal by GlcNBu.................................. 77 3.3 Micro‐architecture of the trabecular bone. ..................................................... 80 3.4 Cancellous bone connectivity. .......................................................................... 82 3.5 Site‐specific structure change. ......................................................................... 82 3.6 Joint integrity. ................................................................................................... 86 3.7 Structure model index (SMI). ........................................................................... 87 4. Discussion ............................................................................................................... 87 Page | 3
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