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Dopamine Receptors in the Gastrointestinal Tract

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Dopamine in the Gut

Abstract

Dopamine (DA) regulates physiological functions through dopamine receptors (DARs), including D1, D2, D3, D4, and D5. All of the five subtypes mediate neuronal and non-neuronal functions in the central nervous system (CNS) and peripheral organs including gastrointestinal (GI) tract. DA plays a wide range of physiological roles in the GI tract after binding to the DARs and/or the adrenergic receptors, which includes protection of GI mucosa, regulation of GI motility, secretion and absorption, etc. Here we predominately review the distribution of DARs on the GI mucosa, muscularis externa, and enteric nervous system.

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Abbreviations

6-OHDA:

6-Hydroxydopamine

cAMP:

Cyclic adenosine monophosphate

CD:

Crohn’s disease

CNS:

Central nervous system

D1R:

Dopamine D1 receptor

D2R:

Dopamine D2 receptor

D3R:

Dopamine D3 receptor

D4R:

Dopamine D4 receptor

D5R:

Dopamine D5 receptor

DA:

Dopamine

DARs:

Dopamine receptors

DAT:

DA transporter

ENS:

Enteric nervous system

GI:

Gastrointestinal

IBD:

Inflammatory bowel disease

ICC:

Interstitial cells of Cajal

IGF-IR:

Insulin-like growth factor receptor-I

LMMP:

Longitudinal muscle myenteric plexus

PD:

Parkinson’s disease

RT-PCR:

Reverse transcription-PCR

UC:

Ulcerative colitis

VIP:

Vasoactive intestinal peptide

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Correspondence to Jin-Xia Zhu .

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© 2021 Springer Nature Singapore Pte Ltd.

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Zhang, XL., Liu, S., Sun, Q., Zhu, JX. (2021). Dopamine Receptors in the Gastrointestinal Tract. In: Zhu, JX. (eds) Dopamine in the Gut. Springer, Singapore. https://doi.org/10.1007/978-981-33-6586-5_3

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