iDISCO+ for the Study of Neuroimmune Architecture of the Rat Auditory Brainstem

The lower stations of the auditory system display a complex anatomy. The inner ear labyrinth is composed of several interconnecting membranous structures encased in cavities of the temporal bone, and the cerebellopontine angle contains fragile structures such as meningeal folds, the choroid plexus (...

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Main Authors: Paola Perin, Fabian F. Voigt, Philipp Bethge, Fritjof Helmchen, Roberto Pizzala
Format: Article
Language:English
Published: Frontiers Media S.A. 2019-02-01
Series:Frontiers in Neuroanatomy
Subjects:
Online Access:https://www.frontiersin.org/article/10.3389/fnana.2019.00015/full
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author Paola Perin
Fabian F. Voigt
Fabian F. Voigt
Philipp Bethge
Philipp Bethge
Fritjof Helmchen
Fritjof Helmchen
Roberto Pizzala
author_facet Paola Perin
Fabian F. Voigt
Fabian F. Voigt
Philipp Bethge
Philipp Bethge
Fritjof Helmchen
Fritjof Helmchen
Roberto Pizzala
author_sort Paola Perin
collection DOAJ
description The lower stations of the auditory system display a complex anatomy. The inner ear labyrinth is composed of several interconnecting membranous structures encased in cavities of the temporal bone, and the cerebellopontine angle contains fragile structures such as meningeal folds, the choroid plexus (CP), and highly variable vascular formations. For this reason, most histological studies of the auditory system have either focused on the inner ear or the CNS by physically detaching the temporal bone from the brainstem. However, several studies of neuroimmune interactions have pinpointed the importance of structures such as meninges and CP; in the auditory system, an immune function has also been suggested for inner ear structures such as the endolymphatic duct (ED) and sac. All these structures are thin, fragile, and have complex 3D shapes. In order to study the immune cell populations located on these structures and their relevance to the inner ear and auditory brainstem in health and disease, we obtained a clarified-decalcified preparation of the rat hindbrain still attached to the intact temporal bone. This preparation may be immunolabeled using a clearing protocol (based on iDISCO+) to show location and functional state of immune cells. The observed macrophage distribution suggests the presence of CP-mediated communication pathways between the inner ear and the cochlear nuclei.
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spelling doaj.art-c7cb97f6e66c4cbfb20037acf35de27a2022-12-22T00:17:08ZengFrontiers Media S.A.Frontiers in Neuroanatomy1662-51292019-02-011310.3389/fnana.2019.00015440265iDISCO+ for the Study of Neuroimmune Architecture of the Rat Auditory BrainstemPaola Perin0Fabian F. Voigt1Fabian F. Voigt2Philipp Bethge3Philipp Bethge4Fritjof Helmchen5Fritjof Helmchen6Roberto Pizzala7Department of Brain and Behavioural Sciences, University of Pavia, Pavia, ItalyBrain Research Institute, University of Zurich, Zürich, SwitzerlandCenter for Neurosciences, University of Zurich and ETH Zurich, Zürich, SwitzerlandBrain Research Institute, University of Zurich, Zürich, SwitzerlandCenter for Neurosciences, University of Zurich and ETH Zurich, Zürich, SwitzerlandBrain Research Institute, University of Zurich, Zürich, SwitzerlandCenter for Neurosciences, University of Zurich and ETH Zurich, Zürich, SwitzerlandDepartment of Molecular Medicine, University of Pavia, Pavia, ItalyThe lower stations of the auditory system display a complex anatomy. The inner ear labyrinth is composed of several interconnecting membranous structures encased in cavities of the temporal bone, and the cerebellopontine angle contains fragile structures such as meningeal folds, the choroid plexus (CP), and highly variable vascular formations. For this reason, most histological studies of the auditory system have either focused on the inner ear or the CNS by physically detaching the temporal bone from the brainstem. However, several studies of neuroimmune interactions have pinpointed the importance of structures such as meninges and CP; in the auditory system, an immune function has also been suggested for inner ear structures such as the endolymphatic duct (ED) and sac. All these structures are thin, fragile, and have complex 3D shapes. In order to study the immune cell populations located on these structures and their relevance to the inner ear and auditory brainstem in health and disease, we obtained a clarified-decalcified preparation of the rat hindbrain still attached to the intact temporal bone. This preparation may be immunolabeled using a clearing protocol (based on iDISCO+) to show location and functional state of immune cells. The observed macrophage distribution suggests the presence of CP-mediated communication pathways between the inner ear and the cochlear nuclei.https://www.frontiersin.org/article/10.3389/fnana.2019.00015/fullchoroid plexuscochlear nucleusinner earmicrogliamacrophageauditory system
spellingShingle Paola Perin
Fabian F. Voigt
Fabian F. Voigt
Philipp Bethge
Philipp Bethge
Fritjof Helmchen
Fritjof Helmchen
Roberto Pizzala
iDISCO+ for the Study of Neuroimmune Architecture of the Rat Auditory Brainstem
Frontiers in Neuroanatomy
choroid plexus
cochlear nucleus
inner ear
microglia
macrophage
auditory system
title iDISCO+ for the Study of Neuroimmune Architecture of the Rat Auditory Brainstem
title_full iDISCO+ for the Study of Neuroimmune Architecture of the Rat Auditory Brainstem
title_fullStr iDISCO+ for the Study of Neuroimmune Architecture of the Rat Auditory Brainstem
title_full_unstemmed iDISCO+ for the Study of Neuroimmune Architecture of the Rat Auditory Brainstem
title_short iDISCO+ for the Study of Neuroimmune Architecture of the Rat Auditory Brainstem
title_sort idisco for the study of neuroimmune architecture of the rat auditory brainstem
topic choroid plexus
cochlear nucleus
inner ear
microglia
macrophage
auditory system
url https://www.frontiersin.org/article/10.3389/fnana.2019.00015/full
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