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Morphological and neurochemical characterisation of anterogradely labelled spinal sensory and autonomic nerve endings in the mouse bladder.
Auton Neurosci. 2020 09; 227:102697.AN

Abstract

The bladder is innervated by axons of sympathetic and parasympathetic efferent nerves, and by spinal afferent neurons. The objective was to characterise anatomically and immunohistochemically the terminal endings of sensory and autonomic motor nerve endings in wholemount preparations of the mouse bladder. We used both anterograde labelling of pelvic and hypogastric nerves ex vivo and anterograde labelling from lumbosacral dorsal root ganglia (DRG) in vivo in male and female mice. These were combined with immunohistochemistry for major markers of sensory, sympathetic and parasympathetic nerves. Selective labelling of spinal afferent endings following dextran biotin-labelling from DRGs in vivo showed no co-localisation of VAChT or TH in sensory terminals in the detrusor and suburothelial plexus. Biotinamide was applied ex vivo to nerve trunks arising in the pelvic ganglion and running towards the bladder. Among the filled axons, 38% of detrusor fibres and 47% of suburothelial axons were immunoreactive for calcitonin-gene related peptide (CGRP). Vesicular acetylcholine transporter (VAChT) immunoreactivity was present in 26% of both detrusor and suburothelial axons. For tyrosine hydroxylase (TH), the proportions were 15% and 17%, respectively. Three major morphological types of CGRP-immunoreactive nerve endings were distinguished in the bladder wall: simple, branching and complex. VAChT-immunoreactive parasympathetic axons had simple and branching endings; TH immunoreactive axons all had simple morphologies. Our findings revealed that different subtypes of sensory and autonomic nerve endings can be reliably identified by combining anterograde labelling ex vivo with specific immunohistochemical markers, although morphologically some of these types of endings were indistinguishable.

Authors+Show Affiliations

Discipline of Human Physiology, Flinders Health and Medical Research Institute, College of Medicine and Public Health, Flinders University, Adelaide, Australia.Discipline of Human Physiology, Flinders Health and Medical Research Institute, College of Medicine and Public Health, Flinders University, Adelaide, Australia.Discipline of Human Physiology, Flinders Health and Medical Research Institute, College of Medicine and Public Health, Flinders University, Adelaide, Australia.Discipline of Human Physiology, Flinders Health and Medical Research Institute, College of Medicine and Public Health, Flinders University, Adelaide, Australia.Discipline of Human Physiology, Flinders Health and Medical Research Institute, College of Medicine and Public Health, Flinders University, Adelaide, Australia. Electronic address: nicholas.spencer@flinders.edu.au.Discipline of Human Physiology, Flinders Health and Medical Research Institute, College of Medicine and Public Health, Flinders University, Adelaide, Australia. Electronic address: vladimir.zagorodnyuk@flinders.edu.au.

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

32645688

Citation

Sharma, Harman, et al. "Morphological and Neurochemical Characterisation of Anterogradely Labelled Spinal Sensory and Autonomic Nerve Endings in the Mouse Bladder." Autonomic Neuroscience : Basic & Clinical, vol. 227, 2020, p. 102697.
Sharma H, Kyloh M, Brookes SJH, et al. Morphological and neurochemical characterisation of anterogradely labelled spinal sensory and autonomic nerve endings in the mouse bladder. Auton Neurosci. 2020;227:102697.
Sharma, H., Kyloh, M., Brookes, S. J. H., Costa, M., Spencer, N. J., & Zagorodnyuk, V. P. (2020). Morphological and neurochemical characterisation of anterogradely labelled spinal sensory and autonomic nerve endings in the mouse bladder. Autonomic Neuroscience : Basic & Clinical, 227, 102697. https://doi.org/10.1016/j.autneu.2020.102697
Sharma H, et al. Morphological and Neurochemical Characterisation of Anterogradely Labelled Spinal Sensory and Autonomic Nerve Endings in the Mouse Bladder. Auton Neurosci. 2020;227:102697. PubMed PMID: 32645688.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Morphological and neurochemical characterisation of anterogradely labelled spinal sensory and autonomic nerve endings in the mouse bladder. AU - Sharma,Harman, AU - Kyloh,Melinda, AU - Brookes,Simon J H, AU - Costa,Marcello, AU - Spencer,Nick J, AU - Zagorodnyuk,Vladimir P, Y1 - 2020/07/01/ PY - 2020/05/05/received PY - 2020/06/26/revised PY - 2020/06/27/accepted PY - 2020/7/10/pubmed PY - 2020/7/10/medline PY - 2020/7/10/entrez KW - Bladder innervation KW - Parasympathetic nerves KW - Sensory nerves KW - Sympathetic nerves SP - 102697 EP - 102697 JF - Autonomic neuroscience : basic & clinical JO - Auton Neurosci VL - 227 N2 - The bladder is innervated by axons of sympathetic and parasympathetic efferent nerves, and by spinal afferent neurons. The objective was to characterise anatomically and immunohistochemically the terminal endings of sensory and autonomic motor nerve endings in wholemount preparations of the mouse bladder. We used both anterograde labelling of pelvic and hypogastric nerves ex vivo and anterograde labelling from lumbosacral dorsal root ganglia (DRG) in vivo in male and female mice. These were combined with immunohistochemistry for major markers of sensory, sympathetic and parasympathetic nerves. Selective labelling of spinal afferent endings following dextran biotin-labelling from DRGs in vivo showed no co-localisation of VAChT or TH in sensory terminals in the detrusor and suburothelial plexus. Biotinamide was applied ex vivo to nerve trunks arising in the pelvic ganglion and running towards the bladder. Among the filled axons, 38% of detrusor fibres and 47% of suburothelial axons were immunoreactive for calcitonin-gene related peptide (CGRP). Vesicular acetylcholine transporter (VAChT) immunoreactivity was present in 26% of both detrusor and suburothelial axons. For tyrosine hydroxylase (TH), the proportions were 15% and 17%, respectively. Three major morphological types of CGRP-immunoreactive nerve endings were distinguished in the bladder wall: simple, branching and complex. VAChT-immunoreactive parasympathetic axons had simple and branching endings; TH immunoreactive axons all had simple morphologies. Our findings revealed that different subtypes of sensory and autonomic nerve endings can be reliably identified by combining anterograde labelling ex vivo with specific immunohistochemical markers, although morphologically some of these types of endings were indistinguishable. SN - 1872-7484 UR - https://www.unboundmedicine.com/medline/citation/32645688/Morphological_and_neurochemical_characterisation_of_anterogradely_labelled_spinal_sensory_and_autonomic_nerve_endings_in_the_mouse_bladder L2 - https://linkinghub.elsevier.com/retrieve/pii/S1566-0702(20)30131-4 DB - PRIME DP - Unbound Medicine ER -
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