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4 protocols using skf 83822

1

D1/D5 Receptor Agonists in Auditory Memory

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The D1/D5 dopamine receptor-selective agonists SKF38393 (Sigma), SKF83822 (Tocris) and SKF83959 (Sigma), and the D1/D5 dopamine receptor-selective antagonist SCH23390 (Sigma) were dissolved in 0.9% saline and adjusted to ≈ pH 7. The doses used – that is, 0.06 μg/μL = 0.2 mM SKF38393 and 0.5 μg/μL = 1.25 mM SKF83959 for intracortical injections, and 5 mg/kg SKF38393, 0.625 mg/kg SKF83822, 2.5 mg/kg SKF83959, and 0.1 mg/kg SCH23390 for intraperitoneal injections – were based on our previous studies on mechanisms of FM discrimination memory in the gerbil auditory cortex [21 (link),22 (link)] in conjunction with studies on the pharmacological efficacy of the agonists [27 (link)].
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2

Dopamine Receptor Agonists Protocol

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Cabergoline, metoclopramide, bromocriptine, propylnorapomorphine, quinpirole, pergolide and A68930 were purchased from Sigma-Aldrich. SKF 83822 and SKF 83566 were purchased from Tocris (Bristol, UK).
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3

Pharmacological Reagents for Neuromodulation

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Aripiprazole, clozapine, haloperidol hydrochloride, H89 dihydrochloride, L 741,626, MDL 100907, paliperidone, risperidone, SKF 83822, SCH 39166, TCB-2, WAY 100635, 7-OH-DPAT and 8-OH-DPAT were purchased from Tocris Bioscience (Spain). Forskolin and selumetinib (AZD6244) were purchased from Selleckchem (Spain). Cholera toxin (CTX), pertussis toxin (PTX) and 12-O-tetradecanoylphorbol-13-acetate (TPA) were purchased from Sigma-Aldrich (MO, USA). YM-254890 was purchased from Adipogen Life Sciences (CA, USA). All were dissolved in dimethyl sulfoxide, except CTX and WAY 100635 that were dissolved in water.
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4

Pharmacological Modulation of Cocaine Effects

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Cocaine hydrochloride (20 mg/ml/kg, Laboratorios Verardo y Cia., Argentina); the dopamine D1R antagonist SCH 23390 hydrochloride (1.5 μg/μl, Sigma-Aldrich, Germany); and GABAA receptor agonist muscimol (0.1 μg/μl, Sigma-Aldrich, Germany) were all dissolved in sterile 0.9% physiological saline. The dopamine D1R agonist SKF 38393 hydrochloride (12.5 μg/μl, Sigma-Aldrich, Germany); SKF 83822 (1 μg/μl, Tocris Bioscience, UK); and selective inhibitor of MEK U0126 (0.8 μg/μl, Sigma-Aldrich, Germany) were dissolved in sterile 0.9% physiological saline supplemented with DMSO (10% final concentration, Ernesto van Rossum y Cia., Buenos Aires, Argentina). The doses used were determined based on previous studies showing the effect of each compound on learning or behavioral performance [12, (link)13] .
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