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  • Title: Mu opioid receptor from the zebrafish exhibits functional characteristics as those of mammalian mu opioid receptor.
    Author: Marron Fdez de Velasco E, Law PY, Rodríguez RE.
    Journal: Zebrafish; 2009 Sep; 6(3):259-68. PubMed ID: 19761379.
    Abstract:
    The functional characterization of the mu opioid receptor from the zebrafish (zfMOR) is reported here. After transfection in HEK-293 cell line, using both peptidergic and nonpeptidergic opioid ligands in the competition and saturation-binding experiments, in addition to the functional assays of (35)S-GTPgammaS-binding assays and intracellular 3'-5'-cyclic adenosine monophosphate (cAMP) level determinations, we demonstrate that zfMOR exhibits a pharmacological profile similar to that of the mammalian MOR. Besides, the internalization process of zfMOR after opiate agonist treatment (morphine, DAMGO, etorphine) resembles the pattern observed for its mammalian counterpart. These similarities suggest that the zebrafish is a good model for the study of the opioid effects in development.
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