ArticleSex differences in the effects of neuropeptide FF and IgG from neuropeptide FF on morphine- and stress-induced analgesia
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Activation of NPFFR2 leads to hyperalgesia through the spinal inflammatory mediator CGRP in mice
2017, Experimental NeurologyCitation Excerpt :I.c.v. injection of an NPFFR2 selective agonist reversed morphine-induced analgesia (Roussin et al., 2005). Neutralization of endogenous NPFF was found to potentiate morphine analgesia (Kavaliers and Innes, 1992; Kavaliers and Yang, 1989). However, i.t. injection with NPFF or its analog produced analgesia or potentiated the opioid analgesic effect (Gouarderes et al., 1996; Kontinen and Kalso, 1995).
Neuropeptide FF and related peptides attenuates warm-, but not cold-water swim stress-induced analgesia in mice
2012, Behavioural Brain ResearchCitation Excerpt :These observations indicate that NPFF antagonizes the antinociceptive activities induced by endogenous opioid peptides, which is consistent with previous reports [20,21]. Early studies using restraint to induced analgesia suggested that i.c.v. administrations of NPFF dose-dependently reduce SIA in mice [21]. In addition, intra-ventral tegmental area (VTA) injection of NPFF also prevented the footshock SIA in the formalin test [20].
Repeated stress effects on nociception and on ectonucleotidase activities in spinal cord synaptosomes of female rats
2005, Physiology and BehaviorNeuropeptide FF receptor 2 (NPFF2) is localized to pain-processing regions in the primate spinal cord and the lower level of the medulla oblongata
2003, Journal of Chemical NeuroanatomySex differences in drug- and non-drug-induced analgesia
2003, Life Sciences