PMID: 6162390Feb 1, 1981Paper

Rapid palatal expansion in cats: effect of age on sutural cyclic nucleotides

American Journal of Orthodontics
I BrinZ Davidovitch

Abstract

Previous experiments indicate that bone cells respond to externally applied stimuli with fluctuations of cyclic nucleotide levels. The objective of this experiment was to study the response of bone at the midpalatal suture to the application of tensile forces in young and old animals, through an examination of the osteoblastic staining pattern for cAMP and cGMP. The midpalatal suture was rapidly expanded for 0, 10, and 15 days, respectively, in three young and three old cats. Fresh, frozen, unfixed, undecalcified maxillae were sectioned transversely and stained immunohistochemically for cAMP and cGMP. The staining intensity for both nucleotides was increased in the osteoblasts of the young treated animals, while in the old animals the osteoblasts were only faintly stained for cAMP and cGMP. These results demonstrate that bone cells of old animals are less responsive to tensile forces than the corresponding cells in young animals.

References

Jun 1, 1977·American Journal of Orthodontics·A R Ten CateJ B Dickinson
Dec 2, 1976·The New England Journal of Medicine·L Hayflick
Sep 1, 1969·The Journal of Histochemistry and Cytochemistry : Official Journal of the Histochemistry Society·T E MasonR B Dreskin
Mar 1, 1973·The Journal of Surgical Research·M E SteinbergJ Black
Oct 1, 1968·Proceedings of the National Academy of Sciences of the United States of America·P CuatrecasasC B Anfinsen
Jan 1, 1971·Calcified Tissue Research·A A MarinoS C Soderholm

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Citations

Nov 27, 2010·Osteoporosis International : a Journal Established As Result of Cooperation Between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA·K BleicherL M Waite
Feb 9, 2011·European Journal of Orthodontics·Júlio de Araújo GurgelCélia Regina Maio Pinzan-Vercelino
Jan 1, 1987·American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics·S E Bishara, R N Staley
Aug 1, 1988·American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics·P A WagemansA M Kuijpers-Jagtman
Feb 24, 2007·The Journal of Clinical Pediatric Dentistry·Omar Gabriel da Silva FilhoFrancisco Antônio Bertoz

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