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5 protocols using isoproterenol bitartrate

1

Synthesis and Characterization of Neuroactive Compounds

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All compounds and aripiprazole were synthesized as described under General Chemistry Procedures. Dopamine hydrochloride, (−)-quinpirole, (+)-butaclamol hydrochloride, 5-hydroxytryptamine creatine sulfate, (−)-isoproterenol bitartrate, and HEPES sodium salt were purchased from Sigma-Aldrich (St. Louis, MO). HBSS (10X) was purchased by Invitrogen and fatty-acid free BSA was purchased from Akron Biotech.
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2

Synthesis and Characterization of Neuroactive Compounds

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All compounds and aripiprazole were synthesized as described under General Chemistry Procedures. Dopamine hydrochloride, (−)-quinpirole, (+)-butaclamol hydrochloride, 5-hydroxytryptamine creatine sulfate, (−)-isoproterenol bitartrate, and HEPES sodium salt were purchased from Sigma-Aldrich (St. Louis, MO). HBSS (10X) was purchased by Invitrogen and fatty-acid free BSA was purchased from Akron Biotech.
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3

Isoproterenol-Induced Cardiac Remodeling

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Myocardial samples from mice subjected to continuous infusion of isoproterenol were used from a previously reported study (Gravning et al. 2013 (link)). Briefly, 6 months old male C57BL/6 mice were randomized to continuous subcutaneous infusion of isoproterenol bitartrate (50 mg/kg per day; Sigma-Aldrich) or vehicle for 14 days (vehicle, n = 9 and isoproterenol infusion, n = 9). Physical data from echocardiographic examination of these study groups have previously been reported (Gravning et al. 2013 (link)). Total RNA from myocardial biopsies from vehicle-infused (n = 6) and isoproterenol-infused (n = 5) mice were isolated and used for analysis of mRNA levels.
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4

Eukaryotic Elongation Factor 2 Kinase Assay

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Reagent sources were as followings: propofol (Mylan N. V., Tokyo, Japan), diethyl ether (Wako Pure Chemical, Osaka, Japan), buprenorphine (Otsuka Pharmaceutical, Tokyo, Japan), isoproterenol bitartrate (Sigma-Aldrich, St. Louis, MO, USA), and pentobarbital (Sumitomo Dainippon Pharma, Tokyo, Japan).
Antibody sources were as followings: total-eEF2K (No. GTX107879) (Gene Tex, Irvine, CA, USA), phospho-eEF2K (at Ser366) (No. A0071) (Assay Biotech, Sunnyvale, CA, USA), phospho-eEF2 (at Thr56) (No. ADI-905-775-100) (Assay Designs, Ann Arbor, MI, USA), and GAPDH (No. GTX100118) (Gene Tex).
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5

Luminescent Enzymatic Assay for JmjC Demethylase Activity

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Ascorbate ((+)-sodium l-ascorbate), Fe(II) (ammonium iron(II) sulfate hexahydrate), and α-KG (α-ketoglutaric acid sodium salt) were from Sigma-Aldrich (St. Louis, MO). The inhibitor 2,4-pyridinedicarboxylic acid (2,4-PDCA) and the compounds (+)-isoproterenol (+)-bitartrate, benserazide hydrochloride, cafeic acid phenethyl ester, 7,8-dihydroxycoumarin, (-)-isoproterenol hydrochloride, and (+/-) taxifolin hydrate were also purchased from Sigma-Aldrich. The inhibitors 8-hydroxy-5-quinolinecarboxylic acid (IOX-1) and 5-chloro-2-[(E)-2[phenyl(pyridine-2-yl)methylidene] hydrazine-1-yl]pyridine (JIB 04) were purchased from TOCRIS (Bristol, UK). Daminozide and JHDM inhibitor III were purchased from EMD Millipore (Darmstadt, Germany). COSTAR 96-well half-area and 384-well low-volume white plates were purchased from Corning (Corning, NY).
The Succinate-Glo JmjC Demethylase/Hydroxylase Assay kit from Promega Corporation (Madison, WI) is composed of a succinate standard solution and components for two succinate detection reagents. Reagent I uses succinate as a substrate in a coupled enzyme reaction to produce ATP, and Reagent II detects ATP as light output from an ATP-dependent luciferase enzyme (Fig. 1).
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