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  • Title: Milnacipran inhibits itch-related responses in mice through the enhancement of noradrenergic transmission in the spinal cord.
    Author: Andoh T, Gotoh Y, Kuraishi Y.
    Journal: J Pharmacol Sci; 2013; 123(2):199-202. PubMed ID: 24096836.
    Abstract:
    We investigated whether milnacipran, a serotonin-noradrenaline reuptake inhibitor, exhibits an antipruritic effect through the spinal action in mice. Intrathecal injections of milnacipran (0.1 - 10 μg/site) significantly suppressed serotonin-induced biting, which is an itch-related response. However, such an effect was not observed with fluvoxamine (10 μg/site), which is a selective serotonin reuptake inhibitor. Furthermore, an intraperitoneal injection of milnacipran (10 mg/kg) inhibited serotonin-induced biting. When phentolamine (1.0 μg/site), a non-selective α-adrenoceptor antagonist, was intrathecally injected, it inhibited the above response of milnacipran. These results suggest that milnacipran suppresses itching through the inhibition of noradrenaline reuptake in the spinal cord.
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