Open AccessTRPV1 Receptors Contribute to Paclitaxel-Induced c-Fos Expression in Spinal Cord Dorsal Horn Neurons
Author(s) -
Nataliia Kalynovska,
Pavel Adámek,
J. Paleček
Publication year - 2017
Publication title -
physiological research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.647
H-Index - 70
eISSN - 1802-9973
pISSN - 0862-8408
DOI - 10.33549/physiolres.933613
Subject(s) - trpv1 , spinal cord , french horn , dorsum , receptor , neuroscience , capsaicin , c fos , paclitaxel , chemistry , microbiology and biotechnology , anatomy , biology , medicine , gene expression , biochemistry , transient receptor potential channel , gene , psychology , pedagogy , chemotherapy
Transient receptor potential vanilloid type 1 (TRPV1) receptors are important in the development of different pathological chronic pain states. Here we examined the role of spinal cord TRPV1 receptors in the mechanisms leading to activation of dorsal horn neurons after paclitaxel (PAC) treatment. PAC is a widely used chemotherapeutic drug that often leads to development of painful neuropathy. Immunohistochemical analysis of c-Fos protein expression in dorsal horn neurons was used as a marker of neuronal activation. Rat spinal cord slices were processed for in vitro incubation with PAC (100 nM) and TRPV1 receptor antagonists (SB366791 and AMG9810; 10 µM). PAC treatment induced significant upregulation of c-Fos nuclear expression in superficial dorsal horn neurons that was diminished by TRPV1 receptor antagonists pre-incubation. These results further substantiated the role of spinal TRPV1 receptors in the development of paclitaxel-induced neuropathic pain and contribute to better understanding of the pathological mechanisms involved.