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日本人のオピオイド誘発性便秘の頻度は? (日経BP)

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Comparative Analgesic Efficacy of Pregabalin Administered According to Either a Prevention Protocol or an Intervention Protocol in Rats with Cisplatin-induced Peripheral Neuropathy.

著者 Han FY , Kuo A , Nicholson JR , Corradinni L , Smith MT
Clin Exp Pharmacol Physiol.2018 May 21 ; ():.
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Chemotherapy-induced peripheral neuropathy (CIPN) is a type of peripheral neuropathic pain that may be dose-limiting in patients administered potentially curative cancer chemotherapy dosing regimens. In cancer survivors, persistent CIPN adversely affects patient quality of life and so adjuvant drugs (anticonvulsants e.g. pregabalin or antidepressants e.g. amitriptyline) are recommended for the relief of CIPN. However, most studies in rodent models of CIPN involve administration of single bolus doses of adjuvant drugs to assess pain-relieving efficacy. Hence this study was designed to assess the efficacy of pregabalin administered to CIPN-rats according to either a prevention or an intervention protocol. Groups of male Sprague-Dawley rats received four single intraperitoneal bolus doses of cisplatin at 3 mg/kg at once-weekly intervals to induce CIPN. For the prevention protocol, oral pregabalin (or vehicle) was administered to CIPN-rats once-daily for 21 consecutive days from day 0 to day 20 inclusive. For the intervention protocol, oral pregabalin was administered once-daily for 21 consecutive days from day 28 to day 48 inclusive. Mechanical allodynia and mechanical hyperalgesia in the bilateral hindpaws were assessed just prior to each dose of cisplatin and at least once-weekly until study completion (day 27, prevention protocol; or day 48, intervention protocol). Mechanical allodynia and mechanical hyperalgesia were also determined at the time of peak effect at ~2 h post- pregabalin/vehicle administration once-weekly until study completion. For the prevention protocol in CIPN-rats, pregabalin alleviated mechanical hyperalgesia but not mechanical allodynia. For the intervention protocol, pregabalin alleviated both mechanical allodynia and mechanical hyperalgesia in the hindpaws. This article is protected by copyright. All rights reserved.
PMID: 29781509 [PubMed - as supplied by publisher]
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