Loss of auroreceptor function in dopaminergic neurons from dopamine D2 receptor deficient mice

N. B. Mercuri, A. Saiardi, A. Bonci, R. Picetti, P. Calabresi, G. Bernardi, E. Borrelli

Research output: Contribution to journalArticlepeer-review


Dopamine plays a key role in the control of motor and cognitive functions through the interaction with membrane receptors. Dopamine elicits its physiological effect by interacting with receptors that belong to the seven transmembrane domain G-protein-coupled receptors family. Pharmacological and structural analyses have allowed the division of these receptors into two classes: the D1- and D2-like receptors. The D1-like subfamily comprises D1 and D5 while the D2-like is formed by D2, D3 and D4. Dopaminergic neurons arise from the ventral tegmental area and the substantia nigra. These neurons give rise to four dopaminerigc pathways: the nigrostriatal, the mesolimbic, the mesocortical and tuberoinfundibular pathways. These pathways are involved in the control of movement, learning, motivation, reward and hormone synthesis and release. Dysfunction in these pathways leads to neurological, psychiatric and endocrine disorders. Indeed, degeneration of the nigrostriatal pathway leads to Parkinson's disease in humans, characterized by a strong reduction of released dopamine. Thus, a fine tuning of the firing discharge of dopaminergic neurons is a key function in the regulation of dopamine mediated activities in the central nervous system. Somatodendritic dopaminergic auto-receptors of the D2-like family are responsible for such a function. However, it is still controversial whether this function could be ascribed only to one or more members of this subfamily.

Original languageEnglish
Pages (from-to)323-327
Number of pages5
Issue number2
Publication statusPublished - May 12 1997


  • Autoreceptor
  • Basal ganglia
  • DR-deficient mice
  • Dopamine D receptor
  • Electrophysiology
  • Mouse

ASJC Scopus subject areas

  • Neuroscience(all)


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