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  • 1
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    Unresponsiveness to cannabinoids and reduced addictive effects of opiates in CB1 receptor knockout mice (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-01-15
    Description: The function of the central cannabinoid receptor (CB1) was investigated by invalidating its gene. Mutant mice did not respond to cannabinoid drugs, demonstrating the exclusive role of the CB1 receptor in mediating analgesia, reinforcement, hypothermia, hypolocomotion, and hypotension. The acute effects of opiates were unaffected, but the reinforcing properties of morphine and the severity of the withdrawal syndrome were strongly reduced. These observations suggest that the CB1 receptor is involved in the motivational properties of opiates and in the development of physical dependence and extend the concept of an interconnected role of CB1 and opiate receptors in the brain areas mediating addictive behavior.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ledent, C -- Valverde, O -- Cossu, G -- Petitet, F -- Aubert, J F -- Beslot, F -- Bohme, G A -- Imperato, A -- Pedrazzini, T -- Roques, B P -- Vassart, G -- Fratta, W -- Parmentier, M -- New York, N.Y. -- Science. 1999 Jan 15;283(5400):401-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉IRIBHN, Universite libre de Bruxelles, B-1070 Brussels, Belgium.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9888857" target="_blank"〉PubMed〈/a〉
    Keywords: Analgesics, Opioid/pharmacology ; Animals ; Behavior, Animal/drug effects ; Blood Pressure/drug effects ; Body Temperature/drug effects ; Cannabinoids/metabolism/*pharmacology ; Dronabinol/*pharmacology ; Heart Rate/drug effects ; Mice ; Mice, Knockout ; Morphine/pharmacology ; Motor Activity/drug effects ; Narcotics/*pharmacology ; Opioid-Related Disorders/*physiopathology ; Pain Threshold/drug effects ; Receptors, Cannabinoid ; Receptors, Drug/genetics/*physiology ; Receptors, Opioid, kappa/agonists/physiology ; Reinforcement (Psychology) ; Substance Withdrawal Syndrome/physiopathology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 2
    Electronic Resource
    Electronic Resource
    Pre-and post-natal ontogeny of neutral endopeptidase 24-11 (‘enkephalinase’) studied by in vitro autoradiography in the rat (1992)
    Springer
    Cellular and molecular life sciences 48 (1992), S. 290-300 
    Details
    ISSN: 1420-9071
    Keywords: Neutral endopeptidase (NEP) ; enkephalinase ; CALLA ; NEP inhibitor ; [3H]HACBO-Gly ; autoradiography ; atrial natriuretic peptide
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Neutral endopeptidase (NEP, enkephalinase, CALLA) which is present in various neural and non-neural tissues, is able to cleave a variety of regulatory peptides. The distribution of NEP has been studied during rat pre-and post-natal development by autoradiography after in vitro binding of the tritiated inhibitor [3H]HACBO-Gly to whole-body and organ sections. In the central nervous system (CNS), where the presence of NEP has been related to the termination of the action of enkephalins, the external layer of the olfactory bulbs is the only structure prominently labeled before birth. Other CNS structures rich in NEP in the adult, such as the nigrostriatal tract, are progressively labeled after birth. Outside the CNS, the progressive appearance of NEP in the kidney, the lungs and the salivary glands suggests its concomitant involvement in adult physiological functions, including fluid balance control, possibly by cleaving the atrial natriuretic peptide (ANP) and other peptides. On the other hand, transient or enhanced expression of NEP is observed during the development of several organs such as the sensory organs, the heart and the major blood vessels, the intestine, the bones and the genital tubercle. In addition to the still incompletely known physiological functions of the enzyme, the developmental pattern of its expression in several tissues strongly suggests a modulatory role for NEP in the ontogeny of a large number of organs.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01930479
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