Abstract
Root resorbing of deciduous teeth is a general phenomenon during eruption of the permanent teeth. In the present study, we tried to clarify the activeoxygen metabolism of root resorped granulated tissues.
Granulated tissues were obtained from two fresh mandibles of young bovine about 1 year old undergoing root resorption. Cu-Zn-Superoxide dismutase (SOD), Mn-SOD, Lactate dehydrogenase (LDH), and concentration of lipid-peroxidated products were determined on the supernatants from homogenized tissues.
We obtained the following results.
1) Cytosolic Cu-Zn-SOD activity did not elevate as compared to control tissues.
2) Elevation of mitochondrial Mn-SOD activity was observed in granulated tissues.
3) LDH activity did not elevate as compared to control tissues.
4) Lipid-peroxidated products in granulated tissues showed high concentration as compared to control tissues.
Based on the above, we specurated that the active-oxygen metabolism in the root resorped granulated tissues, at least in mitochondria, was elevated.
