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Combined Interactions with I1-, I2-Imidazoline Binding Sites and ?2-Adrenoceptors To Manage Opioid Addiction.


ABSTRACT: Tolerance and dependence associated with chronic opioid exposure result from molecular, cellular, and neural network adaptations. Such adaptations concern opioid and nonopioid systems, including ?2-adrenoceptors (?2-ARs) and I1- and I2-imidazoline binding sites (IBS). Agmatine, one of the hypothesized endogenous ligands of IBS, targeting several systems including ?2-ARs and IBS, proved to be able to regulate opioid-induced analgesia and to attenuate the development of tolerance and dependence. Interested in the complex pharmacological profile of agmatine and considering the nature of its targets, we evaluated two series of imidazolines, rationally designed to simultaneously interact with I1-/I2-IBS or I1-/I2-IBS/?2-ARs. The compounds showing the highest affinities for I1-/I2-IBS or I1-/I2-IBS/?2-ARs have been selected for their in vivo evaluation on opiate withdrawal syndrome. Interestingly, 9, displaying I1-/I2-IBS/?2-ARs interaction profile, appears more effective in reducing expression and acquisition of morphine dependence and, therefore, might be considered a promising tool in managing opioid addiction.

SUBMITTER: Giusepponi ME 

PROVIDER: S-EPMC5066154 | biostudies-other | 2016 Oct

REPOSITORIES: biostudies-other

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Combined Interactions with I<sub>1</sub>-, I<sub>2</sub>-Imidazoline Binding Sites and α<sub>2</sub>-Adrenoceptors To Manage Opioid Addiction.

Giusepponi Maria Elena ME   Cifani Carlo C   Micioni Di Bonaventura Maria Vittoria MV   Mattioli Laura L   Hudson Alan A   Diamanti Eleonora E   Del Bello Fabio F   Giannella Mario M   Mammoli Valerio V   Paoletti Corinne Dalila CD   Piergentili Alessandro A   Pigini Maria M   Quaglia Wilma W  

ACS medicinal chemistry letters 20160908 10


Tolerance and dependence associated with chronic opioid exposure result from molecular, cellular, and neural network adaptations. Such adaptations concern opioid and nonopioid systems, including α<sub>2</sub>-adrenoceptors (α<sub>2</sub>-ARs) and I<sub>1</sub>- and I<sub>2</sub>-imidazoline binding sites (IBS). Agmatine, one of the hypothesized endogenous ligands of IBS, targeting several systems including α<sub>2</sub>-ARs and IBS, proved to be able to regulate opioid-induced analgesia and to a  ...[more]

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2021-04-25 | GSE171683 | GEO