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FORMULATIONS AND METHODS FOR DELAYING ONSET OF CHRONIC NEUROPATHIC PAIN
专利权人:
发明人:
申请号:
EP13719692.9
公开号:
EP2841071A1
申请日:
2013.04.23
申请国别(地区):
EP
年份:
2015
代理人:
摘要:
A dosing regimen for formulations that contain a therapeutic dosage of a site 1 sodium channel blocker, where the dosing regimen provides a prolonged nerve block and is in an effective amount to delay the onset of neuropathic pain, such as hyperalgesia and/or allodynia, for at least one week, and preferably longer at the site, and preferably the region (e.g. entire limb), where the nerve block was applied. The site 1 sodium channel blocker is preferably saxitoxin (STX), preferably in combination with a corticosteroid, preferably dexamethasone. In a preferred embodiment, liposomes are included in the formulation as a controlled release system, producing prolonged duration of block without systemic toxicity. As demonstrated by the examples, encapsulating STX in a controlled release system, such as liposomes, preferably also including a corticosteroid, and administering in suitable dosing regimen to achieve a prolonged nerve block without systemic toxicity, delays the onset of hyperalgesia.
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