SYNERGISTIC EFFECT OF COBRA NEUROTOXIN POLYPEPTIDE ON INHIBITING OPIOID HYPERALGESIA AND TOLERANCE AND ALLEVIATING PAIN ASSOCIATED THEREWITH

    公开(公告)号:EP4008337A1

    公开(公告)日:2022-06-08

    申请号:EP20839663.0

    申请日:2020-07-09

    Applicant: Qi, Zhankai

    Abstract: Opioid induced tolerance and hyperalgesia are two closely related yet different symptoms. The former analgesic tolerance refers to the decline in analgesic effects of an opioid, whilst the latter refers to the patient's abnormal pain response to non-injurious stimuli or a highly sensitive pain response to the same injurious stimuli caused by continuous applications of opioid receptor agonists. Analgesic tolerance and hyperalgesia, although two different adverse reactions induced by opioid receptor agonists, both impede the long-term clinical use of opioids. Consequently, patients under the long-term prescription of such drugs are left to face severe side effects, thus a major unmet clinical need.
    Elapidae neurotoxin, not only it inhibits opioid induced hyperalgesia and tolerance, but also it can produce synergistic analgesic effect with an opioid for the treatment of pain, hence it decreases the severe side effect of opioid such as morphine, and synergizes the anti-nociceptive effect of opioid.

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