| 1. |
- Abrahamsson, Sven Olof, et al.
(författare)
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Dehydration inhibits matrix synthesis and cell proliferation : An in vitro study of rabbit flexor tendons
- 1991
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Ingår i: Acta Orthopaedica. - : Medical Journals Sweden AB. - 1745-3674 .- 0001-6470. ; 62:2, s. 159-162
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Tidskriftsartikel (refereegranskat)abstract
- Segments of the deep flexor tendon of the rabbit were exposed to air; the effects of dehydration on in vitro synthesis of proteoglycan, collagen, non-collagenous protein, and cell proliferation were compared with tendon segments that were kept moist with physiologic saline. After 20 min of expo-sure to air, the tendons lost half and after 40 min all of their ability to synthesize matrix components and to proliferate, whereas irrigated tendons remained viable during the entire experiment.
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| 2. |
- Odenbring, Sten, et al.
(författare)
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Proteoglycan epitope in synovial fluid in gonarthrosis : 28 cases of tibial osteotomy studied prospectively for 2 years
- 1991
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Ingår i: Acta Orthopaedica. - : Medical Journals Sweden AB. - 1745-3674 .- 0001-6470. ; 62:2, s. 169-173
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Tidskriftsartikel (refereegranskat)abstract
- High tibial osteotomy was performed for medial gonarthrosis in 28 patients. Preoperatively, and at 3, 12, and 24 months after surgery, clinical and radiographic examinations were made, and joint-fluid samples were aspirated. Arthroscopy was performed preoperatively and at 24 months. Immunoassay of proteoglycan epitope in joint fluid showed an increase in concentration at all times as compared with a reference population with normal knee joints. An increase in both the concentration and the total amount of proteoglycan epitope in joint fluid was noted at 3 months postoperatively with a return to preoperative values at later times. Regrowth of fibrocartilage did not correlate with proteoglycan epitope data
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| 3. |
- Aspenberg, P., et al.
(författare)
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Monkey bone matrix induces bone formation in the athymic rat, but not in adult monkeys
- 1991
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Ingår i: Journal of Orthopaedic Research. - : Wiley. - 0736-0266 .- 1554-527X. ; 9:1, s. 20-25
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Tidskriftsartikel (refereegranskat)abstract
- Demineralized bone matrix from young and adult monkeys was implanted intramuscularly for 6 weeks in athymic rats and adult monkeys. Cartilage and bone induction was evaluated by histology and calcium content. In the athymic rat, most implants induced cartilage or bone. In the monkeys, cartilage was formed only on rare occasions and there was no sign of bone formation. We conclude that (a) adult monkey bone matrix contains bone inductive properties; (b) these properties are not sufficient to induce bone formation in adult monkey muscle sites.
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| 4. |
- Lohmander, Stefan
(författare)
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Markers of cartilage metabolism in arthrosis
- 1991
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Ingår i: Acta Orthopaedica. - : Medical Journals Sweden AB. - 1745-3674 .- 0001-6470. ; 62:6, s. 623-632
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Tidskriftsartikel (refereegranskat)abstract
- The mechanisms involved in the disease process in arthrosis are largely unknown, with genetics, joint malalignment, overload or trauma, obesity, and aging as some of the known or suspected contributing factors. Even less well known is how these general factors are translated into disease mechanisms at the cell and tissue levels. However, it may be argued that degradation of cartilage matrix is a key event at some time in the development of arthrosis. During this process, fragments of matrix molecules and other chondrocyte products are released into the joint fluid and eventually into other body fluids. These molecules can be used as markers of cartilage metabolism to monitor joint disease. In addition, by identifying the proteases and the structure of the released matrix fragments, we may improve our understanding of the cellular mechanisms active in cartilage degradation. Such information offers improved diagnostic and prognostic tools for rational treatment aimed at retarding cartilage destruction in arthrosis.
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