| Craniofacial development and physiological state after early oral breathing in rats. | |
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MedLine Citation:
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PMID: 22288917 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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Padzys GS, Tankosic C, Trabalon M, Martrette J-M. Craniofacial development and physiological state after early oral breathing in rats. Eur J Oral Sci 2012; 120: 21-28. © 2011 Eur J Oral Sci In this study we determined whether craniofacial development in rats could be influenced by an early temporary (3 d) nasal obstruction associated with forced oral breathing. The rats were killed at specific time points after surgery. Plasma samples were taken for biochemical analyses, and cephalometric measurements were performed. Shortly after nasal obstruction, the vertical nasomaxillary complex and the longitudinal skull base proved to be smaller in both sexes of test rats compared with controls. This was maintained in male rats but not in female rats. In female rats, only the longitudinal skull base remained somewhat shorter as the animals grew older. Reversible nasal obstruction was further associated with reduced dimensions of the olfactory bulbs lasting into adulthood and an initial decrease in lung weight. One day after implementing nasal obstruction, basal corticosterone levels had increased (by over 1,000%) and stayed at a high level in female rats. In male rats, however, the corticosterone level seemed to return to normal by day 90. Oral breathing was also associated with a lower level of thyroid hormone, especially at the shorter term intervals in both sexes. We conclude that a 3-d nasal obstruction period in young rats leads to long-term hormonal changes and to craniofacial structural adaptation. |
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Authors:
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Guy S Padzys; Christiane Tankosic; Marie Trabalon; Jean-Marc Martrette |
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Publication Detail:
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Type: Journal Article Date: 2011-12-20 |
Journal Detail:
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Title: European journal of oral sciences Volume: 120 ISSN: 1600-0722 ISO Abbreviation: Eur. J. Oral Sci. Publication Date: 2012 Feb |
Date Detail:
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Created Date: 2012-01-31 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9504563 Medline TA: Eur J Oral Sci Country: Denmark |
Other Details:
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Languages: eng Pagination: 21-8 Citation Subset: D; IM |
Copyright Information:
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© 2011 Eur J Oral Sci. |
Affiliation:
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Université H. Poincaré, BP, Vandoeuvre-les-Nancy Université de Strasbourg, rue Blaise Pascal, Strasbourg, France. |
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