Nucleus Robustus Arcuati (Arc) Dopaminergic Neurons is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
The arcuate nucleus (ARC) of the hypothalamus contains a distinct population of dopaminergic neurons that regulate prolactin secretion, food intake, metabolism, and reward. These neurons are distinct from the tuberoinfundibular dopamine (TIDA) neurons but share overlapping functions.
| Property | Value |
|---|---|
| Cell Type | Dopaminergic Neuron |
| Brain Region | Hypothalamus, Arcuate Nucleus |
| Neurotransmitter | Dopamine (primary), Neurotensin, Kisspeptin (co-transmitters) |
| Primary Function | Prolactin regulation, metabolism, reward, reproduction |
ARC dopamine neurons tonically inhibit prolactin secretion from the anterior pituitary. Prolactin stimulates these neurons in a negative feedback loop.
These neurons respond to leptin, ghrelin, and glucose to regulate:
ARC dopaminergic projections to nucleus accumbens contribute to reward-driven behaviors, particularly food reward.
Kisspeptin-dopamine neurons integrate metabolic status with reproductive hormone regulation.
Single-cell RNAseq of ARC dopaminergic neurons:
ARC dopamine neurons are targets for obesity and metabolic syndrome treatments.
Dopamine agonist therapy for infertility related to hyperprolactinemia.
The study of Nucleus Robustus Arcuati (Arc) Dopaminergic Neurons has evolved significantly over the past decades. Research in this area has revealed important insights into the underlying mechanisms of neurodegeneration and continues to drive therapeutic development.
Historical context and key discoveries in this field have shaped our current understanding and will continue to guide future research directions.
[1] Moore KE. Hypothalamic dopaminergic neurons. Adv Biochem Psychopharmacol. 1987;45:91-108.
[2] Ben-Jonathan N, Hnasko R. Dopamine as a prolactin (PRL) inhibitor. Endocr Rev. 2001;22(6):724-763.
[3] Luo SX, et al. Regulation of feeding and reward by arcuate nucleus dopamine neurons. Mol Psychiatry. 2021;26(8):3943-3955.
[4] Zhang X, van den Pol AN. Dopamine/kisspeptin neurons coordinate metabolic and reproductive functions. Nature. 2015;528(7582):351-357.
[5] Fetissov SO, et al. Hypothalamic dopamine and serotonin in food intake. Physiol Behav. 2019;210:112641.
[6] Roseberry AG, et al. Neurotensin and dopamine interactions. Peptides. 2019;117:170189.
[7] Goodman RL. The role of dopamine in the control of prolactin secretion. Anim Reprod Sci. 2019;207:23-30.
[8] Oakes SR, et al. The lactotroph. Handb Exp Pharmacol. 2020;261:63-89.