Isoflurane anesthesia inhibits clozapine- and risperidone-induced dopamine release and anesthesia-induced changes in dopamine metabolism was modified by fluoxetine in the rat striatum: An in vivo microdialysis study.

Isoflurane anesthesia inhibits clozapine- and risperidone-induced dopamine release and anesthesia-induced changes in dopamine metabolism was modified by fluoxetine in the rat striatum: An in vivo microdialysis study. Research Abstract Details 

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Isoflurane anesthesia inhibits clozapine- and risperidone-induced dopamine release and anesthesia-induced changes in dopamine metabolism was modified by fluoxetine in the rat striatum: An in vivo microdialysis study. Abstract Text:

Yushi U Adachi,Shigeyuki Yamada,Maiko Satomoto,Hideyuki Higuchi,Kazuhiko Watanabe,Tomiei Kazama,Soichiro Mimuro,Shigehito Sato,Yushi U Adachi,Shigeyuki Yamada,Maiko Satomoto,Hideyuki Higuchi,Kazuhiko Watanabe,Tomiei Kazama,Soichiro Mimuro,Shigehito Sato,

Previously, we have reported that halothane anesthesia increases the extracellular concentrations of dopamine (DA) metabolites in the rat striatum using in vivo microdialysis techniques, and we have suggested that volatile anesthetics affect DA release and metabolism in various ways. The present investigation assesses the effect of isoflurane, widely used in clinical anesthesia, on DA release and metabolism. A microdialysis probe was implanted in the striatum of male Sprague-Dawley rats (n=5-7 per group). After recovery, the probe was perfused with modified Ringer's solution and 40mul of dialysate were injected into a high performance liquid chromatograph every 20min. The rats were given saline or the same volume of 10mgkg(-1) clozapine, risperidone, fluoxetine or citalopram. After the pharmacological treatment, the rats were anesthetized with 1.0% or 2.5% isoflurane for 1h. The data were analyzed using two-way analysis of variance (ANOVA). For each drug with significant (p<0.05) drug-time interactions, the statistical analysis included one-way ANOVA and Newman-Keuls post hoc comparisons. A high concentration of isoflurane (2.5%) anesthesia increased the extracellular concentration of DA metabolites during emergence from anesthesia. The levels of DA metabolites increased in an isoflurane concentration-dependent manner. Isoflurane attenuated DA release induced by clozapine and risperidone. Fluoxetine, but not citalopram, antagonized the isoflurane-induced increase in metabolites. The results of current investigation suggest that isoflurane enhances presynaptic DA metabolism, and that the oxidation of DA might be partially modulated by the activities of the dopaminergic-serotonergic pathway at a presynaptic site in the rat striatum.

Isoflurane anesthesia inhibits clozapine- and risperidone-induced dopamine release and anesthesia-induced changes in dopamine metabolism was modified by fluoxetine in the rat striatum: An in vivo microdialysis study. Publishing Authors By Initials

YU Adachi,S Yamada,M Satomoto,H Higuchi,K Watanabe,T Kazama,S Mimuro,S Sato,YU Adachi,S Yamada,M Satomoto,H Higuchi,K Watanabe,T Kazama,S Mimuro,S Sato,

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Isoflurane anesthesia inhibits clozapine- and risperidone-induced dopamine release and anesthesia-induced changes in dopamine metabolism was modified by fluoxetine in the rat striatum: An in vivo microdialysis study. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Neurochemistry international

VOLUME: 52

Page Numbers: 384-91

Journal Abbreviation: Neurochem. Int.

ISSN: 0197-0186

DAY: 22

MONTH: 07

YEAR: 2007

Isoflurane anesthesia inhibits clozapine- and risperidone-induced dopamine release and anesthesia-induced changes in dopamine metabolism was modified by fluoxetine in the rat striatum: An in vivo microdialysis study. Information

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LANGUAGE: eng

NlmUniqueID: 8006959

Isoflurane anesthesia inhibits clozapine- and risperidone-induced dopamine release and anesthesia-induced changes in dopamine metabolism was modified by fluoxetine in the rat striatum: An in vivo microdialysis study. Keywords Mesh Terms:

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Grant and Affiliation Information for Isoflurane anesthesia inhibits clozapine- and risperidone-induced dopamine release and anesthesia-induced changes in dopamine metabolism was modified by fluoxetine in the rat striatum: An in vivo microdialysis study.

AFFILIATION: Intensive Care Unit of University Hospital, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-ku, Hamamatsu city, Shizuoka 431-3192, Japan.

Country: England

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MEDLINETA: Neurochem Int

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