title: How best to preserve and reveal the structural intricacies of cartilaginous tissue.
abstract: No single processing technique is capable of optimally preserving each and all of the structural entities of cartilaginous tissue. Hence, the choice of methodology must necessarily be governed by the nature of the component that is targeted for analysis, for example, fibrillar collagens or proteoglycans within the extracellular matrix, or the chondrocytes themselves. This article affords an insight into the pitfalls that are to be encountered when implementing the available techniques and how best to circumvent them. Adult articular cartilage is taken as a representative pars pro toto of the different bodily types. In mammals, this layer of tissue is a component of the synovial joints, wherein it fulfills crucial and diverse biomechanical functions. The biomechanical functions of articular cartilage have their structural and molecular correlates. During the natural course of postnatal development and after the onset of pathological disease processes, such as osteoarthritis, the tissue undergoes structural changes which are intimately reflected in biomechanical modulations. The fine structural intricacies that subserve the changes in tissue function can be accurately assessed only if they are faithfully preserved at the molecular level. For this reason, a careful consideration of the tissue-processing technique is indispensable. Since, as aforementioned, no single methodological tool is capable of optimally preserving all constituents, the approach must be pre-selected with a targeted structure in view. Guidance in this choice is offered.
authors.affiliation: Departments of Osteoporosis, Orthopaedic Surgery and Clinical Research, Inselspital, University of Bern, Murtenstrasse 35, P.O. Box 54, 3010 Bern, Switzerland. Electronic address: ernst.hunziker@dkf.unibe.ch.
authors.forename: Ernst B
authors.initials: EB
authors.lastname: Hunziker
authors.affiliation: Departments of Osteoporosis, Orthopaedic Surgery and Clinical Research, Inselspital, University of Bern, Murtenstrasse 35, P.O. Box 54, 3010 Bern, Switzerland.
authors.forename: Kurt
authors.initials: K
authors.lastname: Lippuner
authors.affiliation: Departments of Osteoporosis, Orthopaedic Surgery and Clinical Research, Inselspital, University of Bern, Murtenstrasse 35, P.O. Box 54, 3010 Bern, Switzerland.
authors.forename: Nahoko
authors.initials: N
authors.lastname: Shintani
mesh_terms: D000818:Animals; D002358:Cartilage, Articular / Q000473:pathology; D019902:Chondrocytes / Q000473:pathology; D006801:Humans; D008854:Microscopy, Electron; D010003:Osteoarthritis / Q000473:pathology; D014021:Tissue Preservation / Q000379:methods*
keywords: Articular cartilage; Fine structure; Matrix; Preservation