What question did this study set out to answer?

To determine how stromelysin exposure alters the biochemical, histologic, and swelling properties of intact cartilage explants and correlate these changes with functional tissue biomechanics.

February 1, 1995Arthritis & Rheumatism

Changes in cartilage composition and physical properties due to stromelysin degradation

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Authors

LBLawrence J. BonassarCornell University EFEliot H. FrankMassachusetts Institute of Technology JMJane C. Murray

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Implication

Controlled laboratory study reveals stromelysin degrades matrix molecules and impairs stiffness in cartilage explants, highlighting mechanisms of tissue deterioration.

Key Points

To determine how stromelysin exposure alters the biochemical, histologic, and swelling properties of intact cartilage explants and correlate these changes with functional tissue biomechanics.
Cultured bovine articular cartilage explants for up to 3 days with or without recombinant human stromelysin (SLN).
Characterized degradation of matrix proteoglycans and collagens (types II and IX) using N-terminal sequencing and Western blot analysis.
Assessed tissue tolerance to static and cyclic compressive loads and monitored electrokinetic changes via high-frequency streaming potential measurements.
Exposure to 20 nM SLN drove time- and dose-dependent proteoglycan loss over 3 days, initiating at the tissue surface and advancing inward.
SLN degraded collagen types IX and II, triggering marked tissue swelling and severe loss of functional compressive stiffness.
High-frequency streaming potential measurements most sensitively and accurately detected the initial focal depletion of proteoglycans.

Cite This Study

Bonassar et al. (1995) studied this question.

synapsesocial.com/papers/6a7d35e8ab1caed3bf74989f https://doi.org/10.1002/art.1780380205

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Implication

Controlled laboratory study reveals stromelysin degrades matrix molecules and impairs stiffness in cartilage explants, highlighting mechanisms of tissue deterioration.

Changes in cartilage composition and physical properties due to stromelysin degradation

Discussion

Member takes

Implication

Key Points

Cite This Study

Changes in cartilage composition and physical properties due to stromelysin degradation

Discussion

Member takes

Implication

Key Points

Cite This Study

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