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Morphine is a potent opioid analgesic. However, the repeated use of morphine causes tolerance and hyperalgesia. Neuroinflammation has been reported to be involved in morphine tolerance and withdrawal-induced hyperalgesia. The complement system is a crucial effector mechanism of immune responses. The present study investigated the roles of complement factor(More)
Spinal neuroinflammation has been shown to play an important role in the development of morphine tolerance and morphine withdrawal-induced hyperalgesia. Lipoxins are endogenous lipoxygenase-derived eicosanoids that can function as "braking signals" in inflammation. The present study investigated the effect of 5 (S), 6 (R)-lipoxin A4 methyl ester (LXA4ME), a(More)
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