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Open AccessJournal Article

Aspects on receptor regulation and isoreceptor identification.

L. F. Agnati, +4 more
- 01 Aug 1980 - 
- Vol. 58, Iss: 4, pp 182-187
TLDR
Criteria for isoreceptor identification are introduced on a quantitative basis, that is by means of comparisons of ED50 values obtained, using a certain agonist, for the different responses triggered by the binding of the ligand with the respective class of receptors.
Abstract
The present paper introduces a classification of receptor regulation. This classification takes into consideration especially the type of regulation (homoregulation vs. heteroregulation) and the biochemical mechanisms subserving the regulation process. Furthermore, criteria for isoreceptor identification are introduced on a quantitative basis, that is by means of comparisons of ED50 values obtained, using a certain agonist, for the different responses triggered by the binding of the ligand with the respective class of receptors. Finally, a possible case of isoreceptor interconversion is extensively discussed and a model for such an interconversion is suggested.

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Citations
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Molecular Mechanisms and Therapeutical Implications of Intramembrane Receptor/Receptor Interactions among Heptahelical Receptors with Examples from the Striatopallidal GABA Neurons

TL;DR: The molecular basis for the known intramembrane receptor/receptor interactions among G protein-coupled receptors was postulated to be heteromerization based on receptor subtype-specific interactions between different types of receptor homomers, and the discovery of GABAB heterodimers started this field rapidly.
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Integrated events in central dopamine transmission as analyzed at multiple levels. Evidence for intramembrane adenosine A2A/dopamine D2 and adenosine A1/dopamine D1 receptor interactions in the basal ganglia

TL;DR: This is the first molecular network to cellular integration in the nerve cell membrane and may be well suited for a number of integrated tasks and can be performed in a short-time scale, in comparison with the very long- time scale observed when receptor heteroregulation involves phosphorylation or receptor resynthesis.
Journal ArticleDOI

Adenosine A2A and dopamine D2 heteromeric receptor complexes and their function

TL;DR: It has now become possible to show that A2A and D2 receptors also coimmunoprecipitate in striatal tissue, giving evidence for the existence of A 2A-D2 heteromeric receptor complexes also in ratstriatal tissue and giving evidence that these heteromers are constitutive.
Book ChapterDOI

Coexistence of neuronal messengers--an overview.

TL;DR: Results demonstrating that neurons often contain more than one chemical compound demonstrate that multiple messengers may provide the means for increasing the capacity for information transfer in the nervous system.
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