Title : Possibility of autocrine beta-adrenergic signaling in C2C12 myotubes.

Pub. Date : 2005 Dec

PMID : 16339749






5 Functional Relationships(s)
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1 Levodopa reportedly inhibits insulin action in skeletal muscle. Levodopa insulin Homo sapiens
2 Here we show that C2C12 myotubes produce levodopa and that insulin-stimulated glucose transport is enhanced when endogenous levodopa is depleted. Levodopa insulin Homo sapiens
3 Exogenous levodopa prevented the stimulation of glucose transport by insulin (P < 0.05) and increased cAMP concentrations (P < 0.05). Levodopa insulin Homo sapiens
4 The decrease in insulin-stimulated glucose transport caused by levodopa was attenuated by propranolol (a beta-adrenergic antagonist) and prevented by NSD-1015 (NSD), an inhibitor of DOPA decarboxylase (DDC; converts levodopa to dopamine). Levodopa insulin Homo sapiens
5 The decrease in insulin-stimulated glucose transport caused by levodopa was attenuated by propranolol (a beta-adrenergic antagonist) and prevented by NSD-1015 (NSD), an inhibitor of DOPA decarboxylase (DDC; converts levodopa to dopamine). Levodopa insulin Homo sapiens