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Antinociceptive effects of A1 and A2 type botulinum toxins on carrageenan-induced hyperalgesia in rat
被引:10
|作者:
Shin, Min-Chul
[1
]
Yukihira, Takashi
[1
,2
]
Ito, Yushi
[1
]
Akaike, Norio
[1
]
机构:
[1] Kumamoto Hlth Sci Univ, Res Div Life Sci, Kumamoto 8615598, Japan
[2] Teikyo Univ, Fac Fukuoka Med Technol, Dept Phys Therapy, Fukuoka 8368505, Japan
来源:
关键词:
A2NTX;
A1LL;
Carrageenan;
c-Fos;
Pain;
INFRAORBITAL NERVE CONSTRICTION;
NEUROPATHIC PAIN;
NEUROTOXINS;
MODEL;
NEURONS;
EXPRESSION;
INJECTIONS;
DECREASES;
MECHANISM;
PROTEINS;
D O I:
10.1016/j.toxicon.2012.12.011
中图分类号:
R9 [药学];
学科分类号:
1007 ;
摘要:
We performed a study on the antinociceptive effects of A1 and A2 type (A1LL and A2NTX, respectively) botulinum toxin on carrageenan-induced hyperalgesia in the rat. Both A1LL and A2NTX had antinociceptive effects in the carrageenan-induced inflammatory pain model, reducing the mechanical and thermal hyperalgesia. A2NTX also reduced the increase in c-fos immunoreactivity in L4-L5 spinal segments induced by carrageenan, suggesting that A2NTX inhibits the activation of spinal nociceptive afferent fibers that project to the CNS. Our results indicate that A2NTX may offer a new therapeutic tool to treat inflammatory pain. (C) 2013 Elsevier Ltd. All rights reserved.
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页码:12 / 19
页数:8
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