Relative contribution of sympathetic and sensory nerves to thermal nociception and tissue trophism in rats.


Neonatal injection of 6-hydroxydopamine (420 mg/kg s.c.) lowered thermal nociceptive threshold (hot plate and tail immersion tests) and increased levels of substance P-like immunoreactivity in the skin (paws, tail, area of vibrissae) of Wistar rats. Chemical ablation of primary afferents, induced in either neonatal or adult rats by systemic administration… (More)


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