Branching projections of ventrolateral reticular neurons to the medial preoptic area and lumbo-sacral spinal cord. (Articolo in rivista)

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Label
  • Branching projections of ventrolateral reticular neurons to the medial preoptic area and lumbo-sacral spinal cord. (Articolo in rivista) (literal)
Anno
  • 2005-01-01T00:00:00+01:00 (literal)
Alternative label
  • Russo A, Pellitteri R, °Romeo R, Stanzani S, °°Jean A. (2005)
    Branching projections of ventrolateral reticular neurons to the medial preoptic area and lumbo-sacral spinal cord.
    in Behavioral and brain functions
    (literal)
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  • Russo A, Pellitteri R, °Romeo R, Stanzani S, °°Jean A. (literal)
Pagina inizio
  • 1 (literal)
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  • 17 (literal)
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  • 1 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
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  • Department of Physiological Sciences, University of Catania, Catania, Italy.*Institute of Neurological Sciences, National Research Council, Section of Catania, viale R. Margherita 6, 95123 Catania, Italy.°Anatomy, Diagnostic Pathology, Phorens Medicine, Hygiene and Public Health, Departments, University of Catania, Via S. Sofia, 87-95123 Catania (Italy).°°Laboratoire de Physiologie Neurovégétative, UMR 6153-CNRS 1147-INRA, Université Aix-Marseille III, Faculté des Sciences St. Jerôme, Marseille, France (literal)
Titolo
  • Branching projections of ventrolateral reticular neurons to the medial preoptic area and lumbo-sacral spinal cord. (literal)
Abstract
  • Different findings indicate that rostral ventrolateral reticular nucleus (RVL) is neuronal substrate of integration and regulation of the cardiovascular functions. Some efferent RVL neurons project to the thoraco-lumbar spinal cord and excite preganglionic sympathetic neurons, to the spinal phrenic motor neurons involved in inspiratory function and increase the activity of vasoconstrictor fibres innervating blood vessels in the skin and skeletal muscle. Our study was aimed at revealing presence of neurons within RVL supplying branching collateral input to the medial preoptic area (MPA) and to the lumbo-sacral spinal cord (SC-L) in the rat. All animal experiments were carried out in accordance with current institutional guidelines for the care and use of experimental animals. We have employed double fluorescent-labelling procedure: the projections were defined by injections of two retrograde tracers: Rhodamine Labelled Bead (RBL) and Fluoro Gold (FG) in the MPA and SC-L, respectively. Our results showed the presence of few single FG neurons and single RBL neurons in the RVL. The size of FG-neurons and RBL-neurons was medium (25-30 microm) and large (50 microm). Few double-projecting neurons were distributed in the middle third of RVL nucleus, their size was 30-40 microm. The results demonstrate that pools of neurons in the RVL have collateral projections to the MPA and SC-L and they are involved in ascending and descending pathway. These data suggest that these neurons could play a role in maintaining activity of central and peripheral blood flow. (literal)
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