Nerve growth factor regulates VR-1 mRNA levels in cultures of adult dorsal root ganglion neurons

John Winston, Hiroki Toma, Mohan Shenoy, Pankaj Jay Pasricha

Research output: Contribution to journalArticle

162 Scopus citations


Nerve growth factor (NGF) regulates the nociceptive properties including sensitivity to capsaicin of a subset of dorsal root ganglion neurons, which express the high-affinity NGF receptor, trkA. Capsaicin sensitivity co-localizes with the expression of a cloned capsaicin receptor, vanilloid receptor type 1 (VR-1), which displays properties similar to the native capsaicin response. To determine whether VR-1 mRNA levels are regulated by NGF, VR-1 mRNA levels and the ability to respond to capsaicin by release of the neuropeptide calcitonin gene related peptide (CGRP) were measured as a function of NGF concentration in cultures of adult dorsal root ganglion neurons. NGF treatment increased both VR-1 mRNA expression and capsaicin evoked release of CGRP. These effects were inhibited by treatment with the trkA inhibitor k252a.

Original languageEnglish (US)
Pages (from-to)181-186
Number of pages6
Issue number2-3
StatePublished - Feb 22 2001



  • Calcitonin gene related peptide release
  • Dorsal root ganglion
  • Nerve growth factor
  • Vanilloid receptor

ASJC Scopus subject areas

  • Neurology
  • Clinical Neurology
  • Anesthesiology and Pain Medicine

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