PMID: 7540911Feb 1, 1995Paper

The raccoon spinocervical and spinothalamic tracts: a horseradish peroxidase study

Brain Research. Brain Research Reviews
B H Pubols, J H Haring

Abstract

The locations of the cells of origin of the spinocervical tract (SCT) and spinothalamic tract (STT) were examined in relation to the somatotopic and laminar organization of the cervical enlargement of the raccoon dorsal horn (DH). In different animals, either the lateral cervical nucleus or the lateral thalamus was injected with a 2% solution of wheat germ agglutinin-horseradish peroxidase (WGA-HRP). Following 24 h or 4 days, respectively, the animals were sacrificed and both injection and target sites (spinal cord segments C6-T2) were processed using the TMB method. All labelled cells were counted in every fifth 50 microns section. Following injection of WGA-HRP into the lateral cervical nucleus, all labelled SCT cells were located ipsilateral to the injection sites. Most (84%) were in laminae III and IV, laminae known from other studies to contain cells preferentially responsive to light tactile stimulation, with very few (3%) in lamina I. Nearly 50% of labelled cells were located in the medial 1/3 of the DH, the region of representation of the glabrous surfaces of the raccoon forepaw. The mean number of labelled SCT cells per section was 4.19. After tracer injections of the lateral thalamus, more than 75% of STT cells were l...Continue Reading

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Citations

Jul 20, 2002·Brain Research Bulletin·Terence V Sewards, Mark Sewards
Mar 17, 2004·The Journal of Comparative Neurology·Leonora J MoutonGert Holstege
Jan 22, 2008·Anatomia, histologia, embryologia·A S Tsingotjidou, G C Papadopoulos
Apr 3, 2003·The European Journal of Neuroscience·Jason R PotasRichard Bandler
Apr 19, 2021·Veterinary Research Communications·Annamaria GrandisCristiano Bombardi

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