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  • 1
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    Regional mu opioid receptor regulation of sensory and affective dimensions of pain (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-07-14
    Description: The endogenous opioid system is involved in stress responses, in the regulation of the experience of pain, and in the action of analgesic opiate drugs. We examined the function of the opioid system and mu-opioid receptors in the brains of healthy human subjects undergoing sustained pain. Sustained pain induced the regional release of endogenous opioids interacting with mu-opioid receptors in a number of cortical and subcortical brain regions. The activation of the mu-opioid receptor system was associated with reductions in the sensory and affective ratings of the pain experience, with distinct neuroanatomical involvements. These data demonstrate the central role of the mu-opioid receptors and their endogenous ligands in the regulation of sensory and affective components of the pain experience.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zubieta, J K -- Smith, Y R -- Bueller, J A -- Xu, Y -- Kilbourn, M R -- Jewett, D M -- Meyer, C R -- Koeppe, R A -- Stohler, C S -- R01 DE 12059/DE/NIDCR NIH HHS/ -- R01 DE 12743/DE/NIDCR NIH HHS/ -- New York, N.Y. -- Science. 2001 Jul 13;293(5528):311-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Psychiatry and Mental Health Research Institute, Medical School, The University of Michigan, Ann Arbor, MI 48104-1687, USA. zubieta@umich.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11452128" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Amygdala/physiology ; Analgesics, Opioid/administration & dosage ; Brain/*physiology ; Brain Mapping ; Female ; Fentanyl/administration & dosage/*analogs & derivatives ; Humans ; Magnetic Resonance Imaging ; Male ; Masseter Muscle ; Opioid Peptides/physiology ; *Pain ; Pain Measurement ; Receptors, Opioid, mu/*physiology ; Thalamus/physiology ; Tomography, Emission-Computed
    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
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    COMT val158met genotype affects mu-opioid neurotransmitter responses to a pain stressor (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2003-02-22
    Description: Responses to pain and other stressors are regulated by interactions between multiple brain areas and neurochemical systems. We examined the influence of a common functional genetic polymorphism affecting the metabolism of catecholamines on the modulation of responses to sustained pain in humans. Individuals homozygous for the met158 allele of the catechol-O-methyltransferase (COMT) polymorphism (val158met) showed diminished regional mu-opioid system responses to pain compared with heterozygotes. These effects were accompanied by higher sensory and affective ratings of pain and a more negative internal affective state. Opposite effects were observed in val158 homozygotes. The COMT val158met polymorphism thus influences the human experience of pain and may underlie interindividual differences in the adaptation and responses to pain and other stressful stimuli.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zubieta, Jon-Kar -- Heitzeg, Mary M -- Smith, Yolanda R -- Bueller, Joshua A -- Xu, Ke -- Xu, Yanjun -- Koeppe, Robert A -- Stohler, Christian S -- Goldman, David -- R01 DE 12059/DE/NIDCR NIH HHS/ -- R01 DE 12743/DE/NIDCR NIH HHS/ -- New York, N.Y. -- Science. 2003 Feb 21;299(5610):1240-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Psychiatry and Mental Health Research Institute, University of Michigan, Ann Arbor, MI 48109-0720, USA. zubieta@umich.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12595695" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Affect ; Amino Acid Substitution ; Analysis of Variance ; Brain/*metabolism/radionuclide imaging ; Brain Mapping ; Catechol O-Methyltransferase/chemistry/*genetics/metabolism ; Cerebellum/metabolism/radionuclide imaging ; Female ; Genotype ; Heterozygote ; Homozygote ; Humans ; Magnetic Resonance Imaging ; Male ; Neural Pathways ; *Pain ; Polymorphism, Genetic ; Receptors, Opioid, mu/*metabolism ; Synaptic Transmission ; Thalamus/metabolism
    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)
    Location Call Number Expected Availability
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