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PURPOSE This study aimed to evaluate the preventive effects of Camellia sinensis var. assamica (CSVA) on diabetic nephropathy in in vitro and in vivo models. MATERIALS AND METHODS MDCK cells were incubated with 1 mM of oxalate with or without different concentrations of CSVA, then MTT and malondialdehyde (MDA) assays were performed to investigate the(More)
We previously found that the dopamine D2-type receptors (D2 and D3 receptors), coupled to protein kinase G (PKG), upregulate locomotor activity after repeated cocaine administration. In this study, D4 receptors, another type of D2 receptor also coupled to PKG, were examined to determine their requirement in the regulation of locomotor activity after(More)
The regulation of α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid (AMPA) receptor GluR1 subunit phosphorylation at serine 845 (GluR1-Ser845) by protein kinase G (PKG) activation was investigated in the nucleus accumbens (NAc) after repeated cocaine administration. Intra-NAc injection of the cyclic guanosine monophosphate (cGMP) analog,(More)
BACKGROUND Phosphorylation state of dopamine- and cAMP-regulated phosphoprotein, molecular weight 32 kDa (DARPP32) is crucial to understand drug-mediated synaptic plasticity. In this study, mechanisms underlying repeated cocaine-stimulated phosphorylation of DARPP32 at threonine 75 (pDARPP32-Thr75) were determined by investigating the hypothesis that(More)
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