کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8529968 | 1558865 | 2017 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Antinociception induced by a novel α2A adrenergic receptor agonist in rodents acute and chronic pain models
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موضوعات مرتبط
علوم زیستی و بیوفناوری
علم عصب شناسی
علوم اعصاب سلولی و مولکولی
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چکیده انگلیسی
The mechanisms and antinociceptive effects of a novel α2A adrenoceptor agonist, 3-(2-chloro-6-fluorobenzil)-imidazolinide-2,4-dione (PT-31) were investigated using animal models of acute and chronic pain. The effects of PT-31 on pain responses were examined using hot plate and formalin tests in mice and spinal nerve ligation (SNL)-induced hyperalgesia in rats. The effects of antagonists acting on α adrenoceptor were assessed to investigate the interaction of these pathways upon PT-31 induced antinociception. PT-31 effects on motor activity/skills and on hemodynamic parameters were also evaluated. PT-31 had dose-dependent antinociception effects on hot-plate and formalin-injection induced pain responses. Thermal hyperalgesia and mechanical allodynia were reduced following a 7 d treatment with PT-31 (1, 5, and 10 mg/kg/d, p.o.), and those effects were attenuated by yohimbine (5 mg/kg), atropine (2 mg/kg), L-nitro arginine methyl ester (L-NAME; 30 mg/kg), or naloxone (2 mg/kg). In contrast to clonidine, PT-31 did not have locomotor or hemodynamic effects in rats. The present results suggest that PT-31 represents a candidate for pain treatment with advantages over clonidine, namely no locomotor or hemodynamic impairments.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: European Journal of Pharmacology - Volume 815, 15 November 2017, Pages 210-218
Journal: European Journal of Pharmacology - Volume 815, 15 November 2017, Pages 210-218
نویسندگان
Roberto Takashi Sudo, Rachel Vieiralves do Amaral, Carlos Eduardo da Silva Monteiro, Ivan da Rocha Pitta, Maria do Carmo Lima, Guilherme Carneiro Montes, Douglas Gordon Ririe, Kenichiro Hayashida, Gisele Zapata-Sudo,