Capnellene, a natural marine compound derived from soft coral, attenuates chronic constriction injury-induced neuropathic pain in rats.

作者: Yen-Hsuan Jean , Wu-Fu Chen , Chun-Sung Sung , Chang-Yih Duh , Shi-Ying Huang

DOI: 10.1111/J.1476-5381.2009.00323.X

关键词:

摘要: Background and purpose:  Natural compounds obtained from marine organisms have received considerable attention as potential sources of novel drugs for treatment human inflammatory diseases. Capnellene, isolated the soft coral Capnella imbricate, 4,4,6a-trimethyl-3-methylene-decahydro-cyclopenta[]pentalene-2,3a-diol (GB9) exhibited anti-inflammatory actions on activated macrophages in vitro. Here we assessed anti-neuroinflammatory properties GB9 its acetylated derivative, acetic acid 3a-hydroxy-4,4,6a-trimethyl-3-methylene-decahydro-cyclopenta[]pentalen-2-yl ester (GB10). Experimental approach:  Effects or GB10 expression inducible nitric oxide synthase (iNOS), cyclooxygenase-2 (COX-2) interferon-γ (IFN-γ)-stimulated mouse microglial BV2 cells were measured by Western blot. The vivo effects these examined chronic constriction injury (CCI) rat model neuropathic pain, measuring thermal hyperalgesia, activation COX-2 protein lumbar spinal cord, immunohistochemistry. Key results:  In cells, inhibited iNOS COX-2, stimulated IFN-γ. Intrathecal administration CCI-induced nociceptive sensitization hyperalgesia a dose-dependent manner. Intraperitoneal injection also up-regulation dorsal horn cord ipsilateral to injury. Conclusion implications:  Taken together, data indicate that marine-derived capnellenes, GB10, had anti-nociceptive IFN-γ-stimulated rats respectively. Therefore, capnellene may serve useful lead compound search new therapeutic agents neuroinflammatory

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