کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4314965 1290056 2009 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effects of neuronal Kv7 potassium channel activators on hyperactivity in a rodent model of mania
موضوعات مرتبط
علوم زیستی و بیوفناوری علم عصب شناسی علوم اعصاب رفتاری
پیش نمایش صفحه اول مقاله
Effects of neuronal Kv7 potassium channel activators on hyperactivity in a rodent model of mania
چکیده انگلیسی

In an effort to investigate the potential antimanic-like activity of Kv7 channel openers, we decided to test: (1) the subtype non-selective Kv7 opener retigabine, (2) the Kv7.4–Kv7.5 (and Kv7.5/3 heteromers) preferring channel opener BMS-204352 (Maxipost), and (3) the novel Kv7.2/3 preferring channel opener ICA-27243, in the amphetamine (AMPH) + chlordiazepoxide (CDP)-induced hyperactivity paradigm in mice, a test often used to assess potential antimanic-like activity of novel compounds. Lithium and lamotrigine were included as positive controls. Pretreatment with lithium attenuated AMPH/CDP-induced hyperactivity, without affecting the activity of AMPH- or CDP-alone, and thus confirmed some predictive validity for the test paradigm. Pretreatment with lamotrigine significantly attenuated AMPH/CDP-induced effects, but also reduced motility when tested in the presence of CDP-alone. Pretreatment with retigabine or ICA-27243 attenuated AMPH/CDP-induced hyperactivity without affecting basal locomotor activity. In contrast, pretreatment with BMS-204352 failed to decrease AMPH/CDP-induced hyperactivity at lower doses (3 and 10 mg/kg). At higher doses BMS-204352 attenuated hyperactivity induced by the AMPH/CDP mix, but only at doses decreasing basal locomotor activity (30 and 60 mg/kg). None of the Kv7 openers tested significantly affected AMPH-induced hyperactivity. In contrast, retigabine and ICA-27243 were shown to induce significant reductions in motility when administered in combination with CDP-alone. In conclusion, the results with lithium confirm some predictive validity for the test paradigm. However, our data highlight an important confounder for interpreting a role for Kv7 channels in the alleviation of manic-like symptoms when employing the AMPH/CDP hyperactivity model in mice. It is imperative that relevant control studies (AMPH- and CDP-alone) be incorporated and reported routinely to enable thorough interpretation of data generated by means of this behavioural test.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Behavioural Brain Research - Volume 198, Issue 2, 17 March 2009, Pages 481–485
نویسندگان
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