@article{oai:miyazaki-u.repo.nii.ac.jp:00001616, author = {小林, 英幸 and Kobayashi, Hideyuki and 横尾, 宏毅 and Yokoo, Hiroki and 柳田, 俊彦 and Yanagita, Toshihiko and 佐藤, 伸矢 and 和田, 明彦 and 横尾, 宏毅 and Yokoo, Hiroki and Satoh, Shinya and Kis, Bela and Deli, Maria and Niwa, Masami and Wada, Akihiko}, issue = {1}, journal = {Brain research : international multidisciplinary journal devoted to fundamental research in the brain sciences}, month = {Dec}, note = {Water homeostasis in the brain is essential for brain function. We have studied how aquaporin (AQP) 1 expression in GP8 immortalized rat brain microvascular endothelial cells is regulated by glucocorticoid. AQP1 protein level was raised by dexamethasone treatment in a time- and concentration-dependent manner. The up-regulation of AQP1 protein by dexamethasone was associated with an increase of AQP1 mRNA level, with no change in the degradation rate of AQP1 mRNA. AQP1 was concentrated in detergent–insoluble fractions in the cells treated with or without dexamethasone, suggesting that function/trafficking of AQP1 may be regulated via the interaction with lipid rafts. Since glucocorticoid therapy has well known beneficial effects in the treatment of brain edema, the induction of AQP1 by dexamethasone raises a possibility that AQP1 plays a role in ameliorating brain edema.}, pages = {12--19}, title = {Induction of aquaporin 1 by dexamethasone in lipid rafts in immortalized brain microvascular endothelial cells}, volume = {1123}, year = {2006}, yomi = {コバヤシ, ヒデユキ and ヨコオ, ヒロキ and ヤナギタ, トシヒコ and サトウ, シンヤ and ワダ, アキヒコ and ヨコオ, ヒロキ} }