Different inhibitory actions of immunomodulating agents and immunosuppressive agents on bone resorption of mouse calvaria

In this study, we have investigated the in vitro effects of the immunomodulators lobenzarit and traxanox and a newly synthesized immunosuppressant, mizoribine, as well as cyclosporin A, on bone resorption using neonatal mouse calvariae labelled with 45Ca. As stimulators of bone resorption, bovine pa...

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Veröffentlicht in:International journal of immunopharmacology 1989, Vol.11 (8), p.953-959
Hauptverfasser: Sasagawa, K, Fujibayashi, S, Okano, K, Nawa, C, Suzuki, S, Kou, S, Yamada, Y, Someya, K
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container_end_page 959
container_issue 8
container_start_page 953
container_title International journal of immunopharmacology
container_volume 11
creator Sasagawa, K
Fujibayashi, S
Okano, K
Nawa, C
Suzuki, S
Kou, S
Yamada, Y
Someya, K
description In this study, we have investigated the in vitro effects of the immunomodulators lobenzarit and traxanox and a newly synthesized immunosuppressant, mizoribine, as well as cyclosporin A, on bone resorption using neonatal mouse calvariae labelled with 45Ca. As stimulators of bone resorption, bovine parathyroid hormone (PTH), lipopolysaccharide (LPS), interleukin 1β (IL-1β) and tumor necrosis factor-α (TNF-α) were used. Lobenzarit, traxanox, mizoribine and cyclosporin A inhibited or tended to inhibit bone resorption stimulated by PTH, LPS, IL-1β or TNF-α in a dose-dependent manner. Basal bone resorption was inhibited by immunosuppressant cyclosporin A or mizoribine, while immunomodulators lobenzarit and traxanox failed to inhibit basal bone resorption. Removal of lobenzarit from the culture medium resulted in the recovery of bone resorptive activity. These results suggest that the inhibitory effect of immunomodulators on bone resorption is reversible and nonselective. Also, it raises the possibility that immunomodulators and immunosuppressants may affect bone resorption by different mechanisms.
doi_str_mv 10.1016/0192-0561(89)90118-5
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As stimulators of bone resorption, bovine parathyroid hormone (PTH), lipopolysaccharide (LPS), interleukin 1β (IL-1β) and tumor necrosis factor-α (TNF-α) were used. Lobenzarit, traxanox, mizoribine and cyclosporin A inhibited or tended to inhibit bone resorption stimulated by PTH, LPS, IL-1β or TNF-α in a dose-dependent manner. Basal bone resorption was inhibited by immunosuppressant cyclosporin A or mizoribine, while immunomodulators lobenzarit and traxanox failed to inhibit basal bone resorption. Removal of lobenzarit from the culture medium resulted in the recovery of bone resorptive activity. These results suggest that the inhibitory effect of immunomodulators on bone resorption is reversible and nonselective. 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Also, it raises the possibility that immunomodulators and immunosuppressants may affect bone resorption by different mechanisms.</description><subject>Adjuvants, Immunologic - pharmacology</subject><subject>Animals</subject><subject>Bone Resorption - chemically induced</subject><subject>Bone Resorption - prevention &amp; control</subject><subject>Chromones - pharmacology</subject><subject>Cyclosporins - pharmacology</subject><subject>Immunosuppressive Agents - pharmacology</subject><subject>In Vitro Techniques</subject><subject>Interleukin-1 - pharmacology</subject><subject>Lipopolysaccharides - pharmacology</subject><subject>Mice</subject><subject>Mice, Inbred ICR</subject><subject>ortho-Aminobenzoates - pharmacology</subject><subject>Parathyroid Hormone - pharmacology</subject><subject>Ribonucleosides - pharmacology</subject><subject>Tumor Necrosis Factor-alpha - pharmacology</subject><issn>0192-0561</issn><issn>1879-3495</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1989</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNp9kMtO5DAQRS00iGkef8BIXo1gEbDjR-wN0oi3hMQG1pbjVMCjxA520lL__SR0D0tWJdW9davqIHRKyQUlVF4SqsuCCEnPlD7XhFJViD20oqrSBeNa_ECrL8tPdJjzX0KIoLI8QAelpIxptUKbG9-2kCCM2Id3X_sxpg22bvQxZBxb7Pt-CrGPzdTZ0Yc3bN9mc8Y2NDstT8OQIGe_hv9iDLiOAfDcjmlYspaoPk4ZsLPd2iZvj9F-a7sMJ7t6hF7vbl-uH4qn5_vH6z9PheOCj4Wo6pKTltlKVCAsaxlI56AqVcO04Jo0omLSOlfWUgpZt4QwINAoR3lFFbAj9HubO6T4MUEeTe-zg66zAeaDDBVcciX0bORbo0sx5wStGZLvbdoYSsxC3Cw4zYLTKG0-iRsxj_3a5U91D83X0A7xrF9tdZifXHtIJjsPwUHjE7jRNNF_v-AfiOaS9Q</recordid><startdate>1989</startdate><enddate>1989</enddate><creator>Sasagawa, K</creator><creator>Fujibayashi, S</creator><creator>Okano, K</creator><creator>Nawa, C</creator><creator>Suzuki, S</creator><creator>Kou, S</creator><creator>Yamada, Y</creator><creator>Someya, K</creator><general>Elsevier Science</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7T5</scope><scope>H94</scope></search><sort><creationdate>1989</creationdate><title>Different inhibitory actions of immunomodulating agents and immunosuppressive agents on bone resorption of mouse calvaria</title><author>Sasagawa, K ; 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subjects Adjuvants, Immunologic - pharmacology
Animals
Bone Resorption - chemically induced
Bone Resorption - prevention & control
Chromones - pharmacology
Cyclosporins - pharmacology
Immunosuppressive Agents - pharmacology
In Vitro Techniques
Interleukin-1 - pharmacology
Lipopolysaccharides - pharmacology
Mice
Mice, Inbred ICR
ortho-Aminobenzoates - pharmacology
Parathyroid Hormone - pharmacology
Ribonucleosides - pharmacology
Tumor Necrosis Factor-alpha - pharmacology
title Different inhibitory actions of immunomodulating agents and immunosuppressive agents on bone resorption of mouse calvaria
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