PHARMACOLOGICAL ACTIVATION OF AMPK INHIBITS INCISION-EVOKED MECHANICAL HYPERSENSITIVITY AND THE DEVELOPMENT OF HYPERALGESIC PRIMING IN MICE

被引:37
作者
Burton, Michael D. [1 ]
Tillu, Dipti V. [1 ,2 ]
Mazhar, Khadijah [1 ]
Mejia, Galo L. [1 ,2 ]
Asiedu, Marina N. [1 ,2 ]
Inyang, Kufreobong [1 ]
Hughes, Travis [2 ]
Lian, Bo [2 ]
Dussor, Gregory [1 ,2 ]
Price, Theodore J. [1 ,2 ]
机构
[1] Univ Texas Dallas, Sch Behav & Brain Sci, BSB 14 102G,800W Campbell Rd, Richardson, TX 75080 USA
[2] Univ Arizona, Dept Pharmacol, Tucson, AZ 85721 USA
基金
美国国家卫生研究院;
关键词
AMPK; metformin; resveratrol; plantar incision; topical therapeutics; PERSISTENT POSTSURGICAL PAIN; NERVE GROWTH-FACTOR; PLANTAR INCISION; METFORMIN; PLASTICITY; MODEL; EXPRESSION; COMPLEX; MOUSE;
D O I
10.1016/j.neuroscience.2017.07.020
中图分类号
Q189 [神经科学];
学科分类号
071006 ;
摘要
New therapeutics to manage post-surgical pain are needed to mitigate the liabilities of opioid and other analgesics. Our previous work shows that key modulators of excitability in peripheral nociceptors, such as extracellular signal-regulated kinases (ERK) are inhibited by activation of adenosine monophosphate activated protein kinase (AMPK). We hypothesized that AMPK activation would attenuate acute incision-evoked mechanical hypersensitivity and the development of hyperalgesic priming caused by surgery in mice. Here we have used a variety of administration routes and combinations of AMPK activators to test this hypothesis. Topical administration of a resveratrol-based cream inhibited acute mechanical hypersensitivity evoked by incision and blocked the development of hyperalgesic priming. We also observed that systemic administration of metformin dose-dependently inhibited incision-evoked mechanical hypersensitivity and hyperalgesic priming. Interestingly, low doses of systemic metformin and local resveratrol that had no acute effect were able to mitigate development of hyperalgesic priming. Combined treatment with doses of systemic metformin and local resveratrol that were not effective on their own enhanced the acute efficacy of the individual AMPK activators for post-surgical mechanical pain alleviation and blocked the development of hyperalgesic priming. Finally, we used dorsal root ganglion (DRG) neurons in culture to show that resveratrol and metformin given in combination shift the cohcentration response curve for AMPK activation to the left and increase the magnitude of AMPK activation. Therefore, we find that topical administration is an effective treatment route of administration and combining systemic and local treatments led to anti-nociceptive efficacy in acute mechanical hypersensitivity at doses that were not effective alone. Collectively our work demonstrates a specific effect of AMPK activators on post-surgical pain and points to novel therapeutic opportunities with potential immediate impact in the clinical setting. (C) 2017 IBRO. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码:119 / 129
页数:11
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