198 results found
    1. Neuroscience

    Different neuronal populations mediate inflammatory pain analgesia by exogenous and endogenous opioids

    Xin-Yan Zhang et al.
    Exogenous opioid analgesia is mediated by MORs expressed in glutamatergic neurons, whereas endogenous opioid analgesia is mediated by MORs expressed in GABAergic neurons.
    1. Neuroscience

    Synapse-specific opioid modulation of thalamo-cortico-striatal circuits

    William T Birdsong et al.
    By differentially modulating the two major excitatory inputs to the striatum, mu- and delta-opioid receptors regulate the balance between thalamic and cortical inputs to the striatum.
    1. Neuroscience

    Constitutive activation of kappa opioid receptors at ventral tegmental area inhibitory synapses following acute stress

    Abigail M Polter et al.
    Rats exposed to a single stressful event experience days-long constitutive activation of the kappa opioid receptor at inhibitory synapses in part of the brain’s reward system, which increases their drug-seeking behavior.
    1. Neuroscience

    Polyglycerol-opioid conjugate produces analgesia devoid of side effects

    Sara González-Rodríguez et al.
    A novel opioid formulation producing analgesia similar to conventional opioids without permeation of blood-brain or intestinal barriers, thus precluding sedation, constipation and respiratory depression.
    1. Neuroscience

    An opioid-like system regulating feeding behavior in C. elegans

    Mi Cheong Cheong et al.
    The discovery that opioid neuropeptide neuronal signaling controls feeding behavior in a genetically tractable invertebrate model may help unravel the mechanisms of appetite control in humans.
    1. Neuroscience

    Opioids modulate an emergent rhythmogenic process to depress breathing

    Xiaolu Sun et al.
    Inspiratory rhythmogenesis is mediated by an emergent mechanism independent of bursts associated with motor output and is modulated by opioids, pointing to strategies for ameliorating opioid-induced respiratory depression.
    1. Neuroscience

    Visualizing endogenous opioid receptors in living neurons using ligand-directed chemistry

    Seksiri Arttamangkul et al.
    Opioid sensitive neurons were identified using a traceless affinity labeling strategy to covalently label endogenous mu-opioid receptors with fluorescent compounds in living brain slices from wild type animals.
    1. Neuroscience

    In vivo detection of optically-evoked opioid peptide release

    Ream Al-Hasani et al.
    In vivo detection of optically evoked endogenous opioid peptides reveals anatomically distinct release profiles.
    1. Neuroscience

    Anti-nociceptive action of peripheral mu-opioid receptors by G-beta-gamma protein-mediated inhibition of TRPM3 channels

    Sandeep Dembla et al.
    Pro-nociceptive and pro-inflammatory TRPM3 (transient receptor potential melastatin 3) channels, expressed in somatosensory neurons, are inhibited by activation of Gαi-coupled receptors, such as µ-opioid receptors, in vitro and in vivo.
    1. Neuroscience

    Opioids depress breathing through two small brainstem sites

    Iris Bachmutsky et al.
    Opioids stop breathing during overdose by silencing two small brain sites, with just 140 neurons in the breathing rhythm generator exerting the key effect.

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