Down-regulation of norepinephrine transporter function induced by chronic administration of desipramine linking to the alteration of sensitivity of local anesthetics-induced convulsions and the counteraction by co-administration with local anesthetics.

Brain Research 1096 巻 1 号 97-103 頁 2006-06-22 発行
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タイトル ( eng )
Down-regulation of norepinephrine transporter function induced by chronic administration of desipramine linking to the alteration of sensitivity of local anesthetics-induced convulsions and the counteraction by co-administration with local anesthetics.
作成者
Song Liqiu
Dohi Toshihiro
収録物名
Brain Research
1096
1
開始ページ 97
終了ページ 103
抄録
Alterations of norepinephrine transporter (NET) function by chroninc inhibition of NET in relation to sensitization to seizures induce by cocaine and local anesthetics were studied. [3H]norepinephrine up take into hippocampus region but not cortex, striatum or amygdalae isolated from mice treated daily for 5 days with desipramine, an inhibitor of NET was significantly decreased. Daily treatment of cocaine increased [3H]norepinephrine uptake into hippocampus. The decrease in norepinephrine uptake induced by chronic desipramine treatment was reversed by co-administration of lidocaine, bupivacaine or tricaine with desipramine. Daily administration of desipramine increased the incidence of appearance of lidocaine-induced convulsions and decreased that of cocaine-induced convulsions. The changes in the convulsive sensitivity to lidocaine and cocaine induced by repeated administration of desipramine was reversed by co-administration of lidocaine with desipramine. These results suggest that down-regulation of hippocampal NET induced by chronic administration of desipramine may be relevant to desipramine-induced sensitization of lidocaine convulsions. Inhibition of Na+ channels by local anesthetics may regulate desipramine-induced down-regulation of NET function. While repeated administration of cocaine caused up-regulation of hipoccampal NET function. Cocaine kindling developed by repeated administration of cocaine may be due to the different mechanisms from those for desipramine-induced sensitization of lidocaine seizures.
NDC分類
医学 [ 490 ]
言語
英語
資源タイプ 学術雑誌論文
出版者
Elsevier
発行日 2006-06-22
権利情報
Copyright (c) 2006 Elsevier Ltd.
出版タイプ Author’s Original(十分な品質であるとして、著者から正式な査読に提出される版)
アクセス権 オープンアクセス
収録物識別子
[ISSN] 0006-8993
[DOI] 10.1016/j.brainres.2006.04.033
[NCID] AA0057324X
[PMID] 16725121
[DOI] http://dx.doi.org/10.1016/j.brainres.2006.04.033 ~の異版である