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  • Title: [Stability of opiate receptors of wet and lyophilized preparations of rat brain membranes].
    Author: Zaĭtsev SV, Kurochkin IN, Sergeeva MG, Varfolomeev SD.
    Journal: Biokhimiia; 1984 Jul; 49(7):1127-33. PubMed ID: 6089917.
    Abstract:
    The effects of incubation of rat brain membranes at 0 degrees C on the specific binding of mu-ligands (naloxone, morphine) and the delta-ligand (D-Ala2, D-Leu5-enkephalin) to opiate receptors were studied. The effects of lyophilization of rat brain membranes on the properties of the opiate receptors were determined. The lyophilized brain membrane preparations revealed an extraordinarily high stability as compared to "wet" membranes. The experimental results suggest that morphine and D-Ala2, D-Leu5-enkephalin binding both to the high affinity and low affinity sites has different nature and point to the utility of stable and standard preparations of lyophilized membranes for the use in the receptor analysis of opiate and opioid peptides.
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