首页 | 本学科首页   官方微博 | 高级检索  
   检索      


A comparative histochemical evaluation of various dehydrogenases in the oral squamous epithelium
Authors:Masahiko Mori  Tsuneo Mizushima  Kiyoshi Koizumi
Institution:(1) Department of Oral Surgery and Histochemical Laboratory, Osaka University Dental School, Kitaku, Osaka, Japan
Abstract:Summary A histochemical observation was made of various dehydrogenase activities in oral squamous epithelia. The localization of dehydrogenases showed a relatively similiarity except for the intensity of the dehydrogenase activity. Succinic dehydrogenase activity was generally confined to the basal cell layer and adjacent cell layers; superficial layers did not show any enzymatic activity. Lactic, and malic dehydrogenase activities were localized in the basal cells to st. granulosum, and the activity of lactic dehydrogenase was the highest. agr-Glycerophosphate, glutamic, glucose-6-phosphate and TPN-isocitric dehydrogenase activities were observed in all the epithelial cells with the exception for the hornified layer, and they were found generally low. beta-Hydroxybutyric dehydrogenase was low and contained in both of st. germinativum and st. granulosum, the keratohyalin in st. granulosum being occasionally found reactive to this enzymatic activity.In connective tissue cells and collagen bundels, activities of lactic, and malic dehydrogenase were intense, while other dehydrogenases were low or trace amount.In the oral squamous epithelium under normal conditions, the dehydrogenase localization concerning the glucose metabolism and TCA cycle member and other close pathways was not similar. Nor were their activities found likewise. Those findings lead to a conclusion that the epithelial cells of the same layer many show a selective metabolic activity.With 21 Figures in the Text
Keywords:
本文献已被 SpringerLink 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号