Functional segregation within the pelvic nerve of male rats: a meso- and microscopic analysis
| العنوان: | Functional segregation within the pelvic nerve of male rats: a meso- and microscopic analysis |
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| المؤلفون: | Peregrine B. Osborne, Nadja Korajkic, Janet R. Keast, Martin M Bertrand |
| المساهمون: | Department of Anatomy & Neuroscience [Melbourne], School of Biomedical Sciences [Melbourne], Faculty of Medicine, Dentistry and Health Sciences [Melbourne], University of Melbourne-University of Melbourne-Faculty of Medicine, Dentistry and Health Sciences [Melbourne], University of Melbourne-University of Melbourne, Centre Hospitalier Universitaire de Nîmes (CHU Nîmes), Laboratoire d'Informatique de Robotique et de Microélectronique de Montpellier (LIRMM), Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM) |
| المصدر: | Journal of Anatomy Journal of Anatomy, Wiley, 2020, 237 (4), pp.757-773. ⟨10.1111/joa.13221⟩ |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | 0301 basic medicine, Male, Autonomic ganglion, MESH: Rats, Sprague-Dawley, Rats, Sprague-Dawley, 0302 clinical medicine, inferior hypogastric plexus, bioelectronic medicine, MESH: Animals, Axon, Neurons, ¨Pelvic ganglion, Ganglia, Sympathetic, [SDV.BA]Life Sciences [q-bio]/Animal biology, Anatomy, Fascicle, autonomic ganglion, Original Papers, medicine.anatomical_structure, MESH: Pelvis / innervation, parasympathetic, Histology, MESH: Rats, Calcitonin Gene-Related Peptide, splanchnic nerve, Sensory system, visceral nerve, Biology, Calcitonin gene-related peptide, Splanchnic nerves, Pelvis, 03 medical and health sciences, [SDV.MHEP.AHA]Life Sciences [q-bio]/Human health and pathology/Tissues and Organs [q-bio.TO], medicine, MESH: Neurons / metabolism, Animals, MESH: Neurons / physiology, Cholinergic neuron, MESH: Ganglia, Sympathetic / metabolism, Molecular Biology, Ecology, Evolution, Behavior and Systematics, urinary tract, Original Paper, [SCCO.NEUR]Cognitive science/Neuroscience, Splanchnic Nerves, Cell Biology, sympathetic, MESH: Male, Axons, pelvic ganglion, Rats, 030104 developmental biology, MESH: Axons / metabolism, MESH: Splanchnic Nerves / metabolism, Cholinergic, 030217 neurology & neurosurgery, Developmental Biology |
| الوصف: | The pelvic splanchnic nerves are essential for pelvic organ function and have been proposed as targets for neuromodulation. We have focused on the rodent homologue of these nerves, the pelvic nerves. Our goal was to define within the pelvic nerve the projections of organ‐specific sensory axons labelled by microinjection of neural tracer (cholera toxin, subunit B) into the bladder, urethra or rectum. We also examined the location of peptidergic sensory axons within the pelvic nerves to determine whether they aggregated separately from sacral preganglionic and paravertebral sympathetic postganglionic axons travelling in the same nerve. To address these aims, microscopy was performed on the major pelvic ganglion (MPG) with attached pelvic nerves, microdissected from young adult male Sprague–Dawley rats (6–8 weeks old) and processed as whole mounts for fluorescence immunohistochemistry. The pelvic nerves were typically composed of five discrete fascicles. Each fascicle contained peptidergic sensory, cholinergic preganglionic and noradrenergic postganglionic axons. Sensory axons innervating the lower urinary tract (LUT) consistently projected in specific fascicles within the pelvic nerves, whereas sensory axons innervating the rectum projected in a complementary group of fascicles. These discrete aggregations of organ‐specific sensory projections could be followed along the full length of the pelvic nerves. From the junction of the pelvic nerve with the MPG, sensory axons immunoreactive for calcitonin gene‐related peptide (CGRP) showed several distinct patterns of projection: some projected directly to the cavernous nerve, others projected directly across the surface of the MPG to the accessory nerves and a third class entered the MPG, encircling specific cholinergic neurons projecting to the LUT. A subpopulation of preganglionic inputs to noradrenergic MPG neurons also showed CGRP immunoreactivity. Together, these studies reveal new molecular and structural features of the pelvic nerves and suggest functional targets of sensory nerves in the MPG. These anatomical data will facilitate the design of experimental bioengineering strategies to specifically modulate each axon class. The pelvic nerve is a mixed sensory‐motor nerve and a potential target of neuromodulation for pelvic organ dysfunction. We have visualised neural components within its individual fascicles and identified segregation of sensory pathways innervating the lower bowel and urinary tracts. We have also defined new features of sensory connectivity in the pelvic ganglia. These anatomical data will facilitate the design of experimental bioengineering strategies to specifically modulate each axon class. |
| تدمد: | 1469-7580 0021-8782 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a2a8bcd4b9172e7dbaffff62ee98112bTest https://pubmed.ncbi.nlm.nih.gov/32598494Test |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....a2a8bcd4b9172e7dbaffff62ee98112b |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 14697580 00218782 |
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