کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2531284 1558911 2015 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effects of repeated quetiapine treatment on conditioned avoidance responding in rats
ترجمه فارسی عنوان
اثرات درمان کروتیایپین تکرار شده در مواجهه با اجتناب شرطی
موضوعات مرتبط
علوم زیستی و بیوفناوری علم عصب شناسی علوم اعصاب سلولی و مولکولی
چکیده انگلیسی

The present study characterized the behavioral mechanisms of avoidance–disruptive effect of quetiapine in the conditioned avoidance response test under two behavioral testing (2 warning signals vs. 1 warning signal) and two drug administration conditions (subcutaneous vs. intravenous). In Experiments 1 and 2, well-trained adult male Sprague-Dawley rats were tested under the subcutaneous (s.c.) quetiapine treatment (5.0, 15.0, 25.0, 50.0 mg/kg) for 7 days in a novel procedure consisting of two conditioned stimuli (CS) (white noise serving as CS1 and pure tone as CS2). Only the highest dose (50.0 mg/kg) produced a persistent suppression of the avoidance response without impairing the escape response. The magnitude of suppression of the CS1 avoidance was similar to that of CS2 avoidance. No significant group difference was found in the quetiapine (15.0 mg/kg, s.c.) challenge test, indicating a lack of a long-term quetiapine effect. In Experiment 3, well-trained rats were tested under the intravenous (i.v.) quetiapine treatment (3.0, 9.0, 15.0 mg/kg) for 5 days and challenged with quetiapine (6.0 mg/kg, i.v. followed by 9.0 mg/kg, s.c.). Only the white noise was used as the CS. Similar to what was being observed in Experiments 1 and 2, intravenously administered quetiapine dose-dependently suppressed avoidance responding during the drug test days, but did not alter drug sensitivity in the challenge days. Thus, quetiapine does not appear to show a preferential inhibition of the avoidance response to a less salient stimulus; and prior quetiapine treatment (s.c. and i.v.) does not cause a sensitization or tolerance to quetiapine.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: European Journal of Pharmacology - Volume 769, 15 December 2015, Pages 154–161
نویسندگان
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