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Synergism between parathyroid hormone and interleukin 1 in stimulating bone resorption in organ culture

Synergism between parathyroid hormone and interleukin 1 in stimulating bone resorption in organ... The interaction of interleukin 1 (IL‐1), a locally produced factor, and parathyroid hormone (PTH), a systemic factor, in stimulating bone resorption was examined using fetal rat long bone organ culture. Concentrations of IL‐1 and PTH, which stimulated little bone resorption when present singly, produced marked resorption when present simultaneously. This synergistic interaction of IL‐1 and PTH was not affected by the presence of the prostaglandin synthetase inhibitor indomethacin. Both interleukin 1α and interleukin 1β were capable of producing synergy. Synergy was not produced by sequential exposure of bone to IL‐1 and PTH, but required the simultaneous presence of both mediators. The leftward shift in the dose response curve of PTH produced by IL‐1 may be an important mechanism controlling localized bone resorption. A role for IL‐1 in stimulating bone resorption in pathologic conditions, such as arthritis and periodontal disease, is strengthened by the finding that even low concentrations of IL‐1 can produce resorptive effects by synergistic interaction with PTH. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Bone and Mineral Research Oxford University Press

Synergism between parathyroid hormone and interleukin 1 in stimulating bone resorption in organ culture

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References (37)

Publisher
Oxford University Press
Copyright
Copyright © 1987 ASBMR
ISSN
0884-0431
eISSN
1523-4681
DOI
10.1002/jbmr.5650020208
Publisher site
See Article on Publisher Site

Abstract

The interaction of interleukin 1 (IL‐1), a locally produced factor, and parathyroid hormone (PTH), a systemic factor, in stimulating bone resorption was examined using fetal rat long bone organ culture. Concentrations of IL‐1 and PTH, which stimulated little bone resorption when present singly, produced marked resorption when present simultaneously. This synergistic interaction of IL‐1 and PTH was not affected by the presence of the prostaglandin synthetase inhibitor indomethacin. Both interleukin 1α and interleukin 1β were capable of producing synergy. Synergy was not produced by sequential exposure of bone to IL‐1 and PTH, but required the simultaneous presence of both mediators. The leftward shift in the dose response curve of PTH produced by IL‐1 may be an important mechanism controlling localized bone resorption. A role for IL‐1 in stimulating bone resorption in pathologic conditions, such as arthritis and periodontal disease, is strengthened by the finding that even low concentrations of IL‐1 can produce resorptive effects by synergistic interaction with PTH.

Journal

Journal of Bone and Mineral ResearchOxford University Press

Published: Apr 1, 1987

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