Cell type-specific ATP-activated responses in rat dorsal root ganglion neurons.

ABSTRACT: 1. The aim of our study is to clarify the relationship between expression pattern of P2X receptors and the cell type of male adult rat (Wistar) dorsal root ganglion (DRG) neurons. We identified the nociceptive cells of acutely dissociated DRG neurons from adult rats type using capsaicin sensitivity. 2. Two types of ATP-activated currents, one with fast, the other with slow desensitization, were found under voltage-clamp conditions. In addition, cells with fast but not slow desensitization responded to capsaicin, indicating that there was a relationship between current kinetics and capsaicin-sensitivity. 3. Both types of neurons were responsive to ATP and alpha, beta methylene-ATP (alpha,betameATP). The concentration of alpha,(beta)meATP producing half-maximal activation (EC50) of neurons w

SUBMITTER: Ueno S 

PROVIDER: S-EPMC1565824 | biostudies-literature | 1999 Jan

REPOSITORIES: biostudies-literature