Title : Neurokinin release produced by capsaicin acting on the central terminals and axons of primary afferents: relationship with N-methyl-D-aspartate and GABA(B) receptors.

Pub. Date : 2003

PMID : 14568027






5 Functional Relationships(s)
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1 To determine whether these two actions have different mechanisms, we measured neurokinin 1 receptor (NK1R) internalization in rat spinal cord slices elicited by incubating the whole slice or just the dorsal root with capsaicin. Capsaicin tachykinin receptor 1 Rattus norvegicus
2 To determine whether these two actions have different mechanisms, we measured neurokinin 1 receptor (NK1R) internalization in rat spinal cord slices elicited by incubating the whole slice or just the dorsal root with capsaicin. Capsaicin tachykinin receptor 1 Rattus norvegicus
3 NK1R internalization produced by incubating the slices with capsaicin was abolished by the NK1R antagonist RP-67580, by the vanilloid receptor 1 (VR1) antagonist capsazepine, and by eliminating Ca(2+) from the medium, but was not affected by the Na(+) channel blocker lidocaine. Capsaicin tachykinin receptor 1 Rattus norvegicus
4 NK1R internalization produced by incubating the slices with capsaicin was abolished by the NK1R antagonist RP-67580, by the vanilloid receptor 1 (VR1) antagonist capsazepine, and by eliminating Ca(2+) from the medium, but was not affected by the Na(+) channel blocker lidocaine. Capsaicin tachykinin receptor 1 Rattus norvegicus
5 Incubating the root with capsaicin produced NK1R internalization in the ipsilateral dorsal horn that was abolished when capsazepine or lidocaine was included in, or when Ca(2+) was omitted from, the medium surrounding the root. Capsaicin tachykinin receptor 1 Rattus norvegicus