Abstract:
:Adenosine A(2A)-dopamine D(2) receptor interactions play a very important role in striatal function. A(2A)-D(2) receptor interactions provide an example of the capabilities of information processing by just two different G protein-coupled receptors. Thus, there is evidence for the coexistence of two reciprocal antagonistic interactions between A(2A) and D(2) receptors in the same neurons, the GABAergic enkephalinergic neurons. An antagonistic A(2A)-D(2) intramembrane receptor interaction, which depends on A(2A)-D(2) receptor heteromerization and G(q/11)-PLC signaling, modulates neuronal excitability and neurotransmitter release. On the other hand, an antagonistic A(2A)-D(2) receptor interaction at the adenylyl-cyclase level, which depends on G(s/olf)- and G(i/o)-type V adenylyl-cyclase signaling, modulates protein phosphorylation and gene expression. Finally, under conditions of upregulation of an activator of G protein signaling (AGS3), such as during chronic treatment with addictive drugs, a synergistic A(2A)-D(2) receptor interaction can also be demonstrated. AGS3 facilitates a synergistic interaction between G(s/olf) - and G(i/o)-coupled receptors on the activation of types II/IV adenylyl cyclase, leading to a paradoxical increase in protein phosphorylation and gene expression upon co-activation of A(2A) and D(2) receptors. The analysis of A(2)-D(2) receptor interactions will have implications for the pathophysiology and treatment of basal ganglia disorders and drug addiction.
journal_name
Curr Pharm Desjournal_title
Current pharmaceutical designauthors
Ferré S,Quiroz C,Woods AS,Cunha R,Popoli P,Ciruela F,Lluis C,Franco R,Azdad K,Schiffmann SNdoi
10.2174/138161208784480108subject
Has Abstractpub_date
2008-01-01 00:00:00pages
1468-74issue
15eissn
1381-6128issn
1873-4286journal_volume
14pub_type
杂志文章,评审abstract::The current gold standard for imaging infection is radiolabeled white blood cells. For reasons of safety, simplicity and cost, it would be desirable to have a receptor-specific ligand that could be used for imaging infection and that would allow a differential diagnosis between sterile and septic inflammatory processe...
journal_title:Current pharmaceutical design
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journal_title:Current pharmaceutical design
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journal_title:Current pharmaceutical design
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journal_title:Current pharmaceutical design
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journal_title:Current pharmaceutical design
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abstract:BACKGROUND:Coronavirus Disease-2019 belongs to the family of viruses which cause a serious pneumonia along with fever, breathing issues and infection of lungs for the first time in China and later spread worldwide. OBJECTIVE:Several studies and clinical trials have been conducted to identify potential drugs and vaccin...
journal_title:Current pharmaceutical design
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journal_title:Current pharmaceutical design
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journal_title:Current pharmaceutical design
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abstract::Recent advances in the fabrication, characterization and application of micro- and nano-particles that possess a non-uniform internal structure are reviewed. The particle structures include core-shell particles, particles with multiple cores or a multi-layered structure, porous particles with both regular and random p...
journal_title:Current pharmaceutical design
pub_type: 杂志文章,评审
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abstract::Mitochondria are involved in different physiological and pathological processes that are crucial for tumor cell physiology, growth and survival. Since cancer cells have frequently disrupted different cell death pathways that promote their survival, mitochondria may be key organelles to promote cell death in cancer cel...
journal_title:Current pharmaceutical design
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更新日期:2011-01-01 00:00:00
abstract::Unlike other neuroinflammatory disorders, like Parkinson's disease, Huntington's disease and multiple sclerosis, little is still known of the role of the endocannabinoid system in Alzheimer's disease (AD). This is partly due to the poor availability of animal models that are really relevant to the human disease, and t...
journal_title:Current pharmaceutical design
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abstract::Advances in particle engineering techniques, such as spray drying, freeze drying and supercritical fluid precipitation, have greatly enhanced the ability to control the structure, morphology, and solid state phase of inhalable sized particles (1 - 5 µm) for formulation in pressurized metered dose inhalers (pMDI). To o...
journal_title:Current pharmaceutical design
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abstract::The receptor for urokinase plasminogen activator (uPAR) is required in hematopoietic stem/progenitor cells (HSC, HPC) mobilization in the mouse. Indeed, uPAR Ko mice are deficient both in retention and mobilization of HSC and HPC, because uPAR causes their retention in the BM through its interaction with the α4β1 inte...
journal_title:Current pharmaceutical design
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