Veterinary research forum : an international quarterly journal, 8(1), 29-34 (2017-05-06)
The parafascicular nucleus (PFN) of thalamus, as a supraspinal structure, has an important role in processing of nociceptive information. In addition, μ-opioid receptor contributes to supraspinal modulation of nociception. In the present study, the effects of microinjection of naloxone (a
beta-Funaltrexamine (beta-FNA) irreversibly blocks morphine analgesia, lethality and its inhibition of gastrointestinal transit, confirming that these actions involve mu receptors. In dose-response studies, beta-FNA antagonized all the actions with similar potencies (ID50 values of 12.1, 11.3 and 12.3 mg/kg, respectively).
The Journal of pharmacology and experimental therapeutics, 242(1), 15-20 (1987-07-01)
The authors have characterized the opioid receptors of rat brain membranes using self- and cross-displacement studies with both tritiated and unlabeled [D-Ala2, D-Leu5]-enkephalin and [D-Ala2, MePhe4, Gly-ol5]-enkephalin. Mathematical modeling demonstrated the presence of three classes of binding sites, corresponding to
To determine the role of spinal mu-opioid receptor subtypes in antinociception induced by intrathecal (i.t.) injection of endomorphin-1 and -2, we assessed the effects of beta-funaltrexamine (a selective mu-opioid receptor antagonist) naloxonazine (a selective antagonist at the mu(1)-opioid receptor) and
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