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Abstract Title:

Tanshinone IIA Attenuates Diabetic Peripheral Neuropathic Pain in Experimental Rats via Inhibiting Inflammation.

Abstract Source:

Evid Based Complement Alternat Med. 2018 ;2018:2789847. Epub 2018 Mar 11. PMID: 29713362

Abstract Author(s):

Baojian Zhang, Yanbing Yu, Gele Aori, Qi Wang, Dawei Kong, Wenqiang Yang, Zhuangli Guo, Li Zhang

Article Affiliation:

Baojian Zhang

Abstract:

Diabetic peripheral neuropathic pain (DPNP) is a common and intractable complication of diabetes. Conventional therapies are always not ideal; development of novel drugs is still needed to achieve better pain relief. Recent evidences have demonstrated that inflammation is involved in the onset and maintenance of DPNP. The anti-inflammatory property of Tanshinone IIA (TIIA) makes it a promising candidate to block or alter the pain perception. This study was conducted to investigate whether TIIA could attenuate DPNP in streptozotocin- (STZ-) induced rats model and its potential mechanisms. TIIA was administered to STZ-induced diabetic rats at the dose of 40 mg/kg once a day for 3 weeks. The effects of TIIA on thermal hyperalgesia and mechanical allodynia were investigated using behavioral tests. The mRNA level and expression of interleukin- (IL-) 1, interleukin- (IL-) 6, tumor necrosis factor- (TNF-), and interleukin- (IL-) 10 in the fourth to sixth segments of the dorsal root ganglion (L4-6 DRG) were detected by quantitative real-time PCR (qPCR) and Western blot. TIIA treatment significantly attenuated mechanical allodynia and thermal hyperalgesia in diabetic rats. In addition, the expression of the proinflammatory cytokines IL-1, IL-6, and TNF-was inhibited, and the level of the anti-inflammatory cytokine IL-10 was increased by TIIA. This study demonstrated that TIIA has significant antiallodynic and antihyperalgesic effects in a rat model of STZ-induced DPNP, and the effect may be associated with its anti-inflammation property.

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Sayer Ji
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