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. Author manuscript; available in PMC: 2016 Oct 25.
Published in final edited form as: Minerva Endocrinol. 2015 Oct 27;41(1):43–56.

Figure 1.

Figure 1

Dopaminergic Negative Feedback Regulating Insulin Secretion Schematic diagram of a β-cell expressing the molecular machinery for dopamine synthesis, storage, and secretion. The dopamine receptor D2R mediates the inhibition of glucose-stimulated insulin secretion. AADC, l-amino acid decarboxylase; DA, dopamine; GSIS, glucose-stimulated insulin secretion; INS, insulin; MAO, monoamine oxidase; LAAT, l-type amino acid transporter; D2R, dopamine 2-like receptors; dopac, 3,4-dihydroxyphenylacetic acid.