國家衛生研究院 NHRI:Item 3990099045/9268
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    Please use this identifier to cite or link to this item: http://ir.nhri.org.tw/handle/3990099045/9268


    Title: Effects of dextromethorphan and oxycodone on treatment of neuropathic pain in mice
    Authors: Yang, PP;Yeh, GC;Huang, EY;Law, PY;Loh, HH;Tao, PL
    Contributors: Center for Neuropsychiatric Research
    Abstract: BACKGROUND: Neuropathic pain is a very troublesome and difficult pain to treat. Although opioids are the best analgesics for cancer and surgical pain in clinic, only oxycodone among opioids shows better efficacy to alleviate neuropathic pain. However, many side effects associated with the use of oxycodone render the continued use of it in neuropathic pain treatment undesirable. Hence, we explored whether dextromethorphan (DM, a known N-methyl-D-aspartate receptor antagonist with neuroprotective properties) could potentiate the anti-allodynic effect of oxycodone and underlying mechanisms regarding to glial cells (astrocytes and microglia) activation and proinflammatory cytokines release in a spinal nerve injury (SNL) mice model. RESULTS: Oxycodone produced a dose-dependent anti-allodynic effect. Co-administration of DM at a dose of 10 mg/kg (i.p.) (DM10) which had no anti-allodynic effect by itself enhanced the acute oxycodone (1 mg/kg, s.c.) effect. When the chronic anti-allodynic effects were examined, co-administration of DM10 also significantly enhanced the oxycodone effect at 3 mg/kg. Furthermore, oxycodone decreased SNL-induced activation of glial cells (astrocytes and microglia) and plasma levels of proinflammatory cytokines (IL-6, IL-1beta and TNF-alpha). Co-administration of DM10 potentiated these effects of oxycodone. CONCLUSION: The combined use of DM with oxycodone may have therapeutic potential for decreasing the effective dose of oxycodone on the treatment of neuropathic pain. Attenuation of the glial activation and proinflammatory cytokines in the spinal cord may be important mechanisms for these effects of DM.
    Date: 2015-09-22
    Relation: Journal of Biomedical Science. 2015 Sep 22;22:Article number 81.
    Link to: http://dx.doi.org/10.1186/s12929-015-0186-3
    JIF/Ranking 2023: http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=NHRI&SrcApp=NHRI_IR&KeyISSN=1021-7770&DestApp=IC2JCR
    Cited Times(WOS): https://www.webofscience.com/wos/woscc/full-record/WOS:000361439400002
    Cited Times(Scopus): http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84942064688
    Appears in Collections:[Pao-Luh Tao] Periodical Articles

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