title: Localization of neurons projecting into the extrinsic penile smooth musculature of the pig: an experimental study on the retractor penis muscle.
abstract: The aim of this study was to locate in male pigs the sensory and autonomic ganglia innervating the retractor penis muscle (RPM), which was taken as an experimental model of the genital smooth musculature. The retrograde neuronal tracers horseradish peroxidase (HRP), Fast Blue (FB), and diamidino yellow (DY) were injected into the bulbopenile portion of the left RPM. The tracers highlighted a different affinity for the neuronal structures, although labelled cells supplying the RPM were generally found in bilateral dorsal root ganglia (DRGs, S1-S3), in bilateral paravertebral ganglia (PaGs, L2-S3), and in the left and right caudal mesenteric ganglia (CMGs). The mean number of labelled FB cells was 795 (range, 645-952) in DRGs, 16046.25 (range, 10226-18742) in PaGs, and 635.25 (range, 333-786) in CMGs. The mean diameter of pseudounipolar DRG cells was 60-75 microm, while the multipolar neurons of PaGs and CMGs had dimensions varying between 20-50 microm and 20-30 microm, respectively.
authors: Department of Animal Health, Faculty of Veterinary Medicine, Parma, Italy. rino.panu@unipr.it
authors: Rino
authors: R
authors: Panu
authors: Luisa
authors: L
authors: Bo Minelli
authors: Maddalena
authors: M
authors: Botti
authors: Ferdinando
authors: F
authors: Gazza
authors: Franca
authors: F
authors: Acone
authors: Luisa
authors: L
authors: Ragionieri
authors: Giovanni
authors: G
authors: Palmieri
mesh_terms: D000578:Amidines; D000818:Animals; D005456:Fluorescent Dyes; D005725:Ganglia, Autonomic / Q000033:anatomy & histology*; D017950:Ganglia, Sensory / Q000033:anatomy & histology*; D006735:Horseradish Peroxidase; D008297:Male; D009130:Muscle, Smooth / Q000294:innervation*; D010413:Penis / Q000294:innervation*; D013552:Swine / Q000033:anatomy & histology*
chemical_list: D000578:Amidines; D005456:Fluorescent Dyes; C031455:diamidino compound 253-50; C037945:diamidino yellow; D006735:Horseradish Peroxidase