Abstract
To assess the effect of a local sympathectomy on bone metabolism, the effect of a unilateral superior cervical ganglionectomy (Gx) on growth and bone mineral content and density of the ipsi- and contralateral mandibles was examined in female rats. A significant increase in the hemi-mandibular bone ipsilateral to Gx was found as compared to the contralateral, sham-operated side 30 days, but not 15 days, after surgery. Bone mineral content of the hemi-mandibular bones was significantly lower in the side ipsilateral to Gx in the group of rats killed on the 30th day after surgery. Since no difference in areas between innervated and denervated hemi-mandibles was found, bone mineral density was also significantly lower in the hemi-mandible ipsilateral to Gx. The results further support that a regional sympathectomy causes qualitative alterations in bone modeling and remodeling, leading to bone resorption.
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