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Author: M. J. Goldstein
Publisher: Springer
ISBN: 1489927239
Category : Science
Languages : en
Pages : 184
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Book Description
The development of a selective D1 dopamine (DA) receptor antagonist SCH 23390 stimulated a number of studies on the functions mediated by central DA receptor subtypes. It was generally assumed that the central D1 DA receptor isa molecular entity whose function awaits further discovery. The papers presented in this volume clearly show that this is no longer the case and that D1 DA receptors have many behavioral fuctions which might be altered in pathological states. A number of papers have recognized the interdependence of the regulatory functions of the D1 DA receptors with D2 and other receptor proteins, and vice versa. The biochemical, pharmacological and morphological characterization of the D1 and D2 DA receptor binding proteins, as well as of DARPP-32, illustrates the complex interactions between various macromolecules. Procedures described for the purification of the D1 and D2 DA receptor subtypes are fundamental for future studies on the mechanisms involved in the coupling of the receptor proteins with signal transducing systems. Several studies in this volume show that D1 DA receptors have behavioral functions and that they are often similar to the responses mediated by D2 DA receptors, but in some instances reflect divergent neuronal activity of both systems. The knowledge of the physiology and biochemistry of the central DA receptor subtypes could lead to the development of a new generation of drugs which ameliorate some mental and neurological dysfunctions without producing severe undesirable side effects.
Author: M. J. Goldstein
Publisher: Springer
ISBN: 1489927239
Category : Science
Languages : en
Pages : 184
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Book Description
The development of a selective D1 dopamine (DA) receptor antagonist SCH 23390 stimulated a number of studies on the functions mediated by central DA receptor subtypes. It was generally assumed that the central D1 DA receptor isa molecular entity whose function awaits further discovery. The papers presented in this volume clearly show that this is no longer the case and that D1 DA receptors have many behavioral fuctions which might be altered in pathological states. A number of papers have recognized the interdependence of the regulatory functions of the D1 DA receptors with D2 and other receptor proteins, and vice versa. The biochemical, pharmacological and morphological characterization of the D1 and D2 DA receptor binding proteins, as well as of DARPP-32, illustrates the complex interactions between various macromolecules. Procedures described for the purification of the D1 and D2 DA receptor subtypes are fundamental for future studies on the mechanisms involved in the coupling of the receptor proteins with signal transducing systems. Several studies in this volume show that D1 DA receptors have behavioral functions and that they are often similar to the responses mediated by D2 DA receptors, but in some instances reflect divergent neuronal activity of both systems. The knowledge of the physiology and biochemistry of the central DA receptor subtypes could lead to the development of a new generation of drugs which ameliorate some mental and neurological dysfunctions without producing severe undesirable side effects.
Author: George Breese
Publisher: Springer Science & Business Media
ISBN: 146845191X
Category : Medical
Languages : en
Pages : 223
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Book Description
Our understanding of the functional mechanisms relating dopamine activity to normal and abnormal behavior has been turned "upside-down" by the recent developments described in the chapters of this volume. Heretofore, it was generally agreed that all of the pharmacological and behavioral properties ascribed to dopamine systems were mediated via activation or inhibition of the subtype of dopamine receptors termed D2. The properties of these receptors were first characterized in 1975 following their identification by receptor binding techniques utilizing 3H-butyrophenones, potent antipsychotic drugs, used in the treatment of schizophrenia. Although another subtype of dopamine receptor had already been identified a few years earlier, now termed the Dl receptor, its functional properties were unknow- other than the fact that it was associated with the activation of the enzyme adenylate cyclase. Our absence of knowledge of the behavioral functions of this receptor stemmed primarily from the lack of selective agonist and antagonists for DI receptors - drugs which did not also interact with D2 receptors. Selective agents for D2 receptors did exist and hence the behavioral roles of D2 receptors were easily ascribed. The work described in this text is primarily stimulated by the development of two selective Dl receptor drugs - the antagonist SCH 23390 and the agonist SKF 38393. The studies described herein clearly show that D1 receptors do indeed have many behavioral functions, on the surface often similar to those responses mediated by D2 receptors.
Author: George Breese
Publisher:
ISBN: 9781468451924
Category :
Languages : en
Pages : 228
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Book Description
Author: C. M. Hollis
Publisher:
ISBN:
Category :
Languages : en
Pages : 388
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Book Description
Author: Ellen Joy Hess
Publisher:
ISBN:
Category :
Languages : en
Pages : 418
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Book Description
Author: P.F. Spano
Publisher: Springer
ISBN:
Category : Medical
Languages : en
Pages : 304
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Book Description
Author: Gaetano Di Chiara
Publisher: Springer Science & Business Media
ISBN: 3642560512
Category : Medical
Languages : en
Pages : 355
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Book Description
With contributions by numerous experts
Author: Mufida El-Ghundi
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Dopamine receptors are widely expressed throughout the central and peripheral nervous systems and regulate many key functions of the brain. Five dopamine receptors have so far been cloned and classified into two main classes known as D1-like (D1 and D5) and D2-like (D2, D3 and D4) based on similarity in structure, pharmacology and coupling. Primarily because of the lack of receptor subtype-selective ligands, the precise physiological roles of these individual dopamine receptor subtypes remain unclear. The D 1 receptor subtype is highly expressed in the striatum, nucleus accumbens and prefrontal cortex, brain regions shown to modulate many functions ranging from locomotion to reward, cognition and emotion. To study the potential ' in vivo' role of the dopamine D1 receptor in the regulation of specific brain functions and drug induced behaviors, we used mice lacking the functional D1 receptor gene. In these mice the D1 receptor gene was deleted by means of homologous recombination. Based on the behavioral analysis of D1 receptor-deficient mice, we demonstrate that the D1 receptor is an abundant protein that plays a crucial role in mediating higher brain functions including some aspects of cognition (spatial learning and memory), appetitive motivation (operant responding for sucrose), alcohol seeking behavior and locomotor responses to alcohol and amphetamine. In addition, we have defined, for the first time, a role for the D1 receptor in the normal extinction of conditioned fear responses. However, D1 receptor does not appear to be essential for basal locomotor activity, working memory, sweet-taste preference or acquisition and expression of fear responses. These findings have great importance in furthering the understanding of the role of D1 receptors in brain functions.
Author: Antonius M. VanDongen
Publisher: CRC Press
ISBN: 142004415X
Category : Medical
Languages : en
Pages : 368
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Book Description
The NMDA receptor plays a critical role in the development of the central nervous system and in adult neuroplasticity, learning, and memory. Therefore, it is not surprising that this receptor has been widely studied. However, despite the importance of rhythms for the sustenance of life, this aspect of NMDAR function remains poorly studied. Written
Author: Kim Neve
Publisher: Springer Science & Business Media
ISBN: 1603273336
Category : Medical
Languages : en
Pages : 650
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Book Description
As sites of action for drugs used to treat schizophrenia and Parkinson’s disease, dopamine receptors are among the most validated drug targets for neuropsychiatric disorders. Dopamine receptors are also drug targets or potential targets for other disorders such as substance abuse, depression, Tourette’s syndrome, and attention deficit hyperactivity disorder. Updated from the successful first edition, "The Dopamine Receptors" serves as a reference work on dopamine receptors while also highlighting the areas of research that are most active today. To achieve this goal, authors have written chapters that set a broad area of research in its historical context, rather than focusing on the research output of their own laboratories.
