Galectine-1 expression in cochleae of C57BL/6 mice during aging

Presbycusis is a progressive hearing loss related to the aging process associated with auditory receptor degeneration. Adult animals exhibited galectine-1 (GAL-1) expression in epithelial cells of the inner and outer spiral sulci and Hensen cells, which was absent from the sensory and supporting cel...

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Veröffentlicht in:Neuroreport 2001-10, Vol.12 (14), p.3107-3110
Hauptverfasser: Bartolomé, Maria Visitación, López, Lorena Maestre, Gil-Loyzaga, Pablo
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container_title Neuroreport
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creator Bartolomé, Maria Visitación
López, Lorena Maestre
Gil-Loyzaga, Pablo
description Presbycusis is a progressive hearing loss related to the aging process associated with auditory receptor degeneration. Adult animals exhibited galectine-1 (GAL-1) expression in epithelial cells of the inner and outer spiral sulci and Hensen cells, which was absent from the sensory and supporting cells. The progressive age-related degeneration of auditory receptor was analyzed using an anti-GAL-1 monoclonal antibody on cochleae of C57BL/6 mice (1–24 months old). Mice ≤ 9 months old showed adult and healthy auditory receptors, with a similar GAL-1 expression along the time. Conversely, animals > 1 year old exhibited a sensory degeneration at the cochleae basal coil that progressively reached the middle coil. Older animals (18–24 months old) showed a single layer epithelium that replaced the auditory receptor. The age-related degenerative process of the auditory receptor involves sensory but also supporting cells, which are both substituted by epithelial non-specialized cells.
doi_str_mv 10.1097/00001756-200110080-00025
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Adult animals exhibited galectine-1 (GAL-1) expression in epithelial cells of the inner and outer spiral sulci and Hensen cells, which was absent from the sensory and supporting cells. The progressive age-related degeneration of auditory receptor was analyzed using an anti-GAL-1 monoclonal antibody on cochleae of C57BL/6 mice (1–24 months old). Mice ≤ 9 months old showed adult and healthy auditory receptors, with a similar GAL-1 expression along the time. Conversely, animals &gt; 1 year old exhibited a sensory degeneration at the cochleae basal coil that progressively reached the middle coil. Older animals (18–24 months old) showed a single layer epithelium that replaced the auditory receptor. 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subjects Aging - metabolism
Aging - pathology
Animals
Cochlea - metabolism
Cochlea - pathology
Cochlea - ultrastructure
Galectin 1
Hair Cells, Auditory, Inner - metabolism
Hair Cells, Auditory, Inner - pathology
Hair Cells, Auditory, Inner - ultrastructure
Hair Cells, Auditory, Outer - metabolism
Hair Cells, Auditory, Outer - pathology
Hair Cells, Auditory, Outer - ultrastructure
Hearing - physiology
Hemagglutinins - metabolism
Immunohistochemistry
Mice
Mice, Inbred C57BL - anatomy & histology
Mice, Inbred C57BL - metabolism
Microscopy, Electron
Nerve Degeneration - metabolism
Nerve Degeneration - pathology
Nerve Degeneration - physiopathology
Presbycusis - metabolism
Presbycusis - pathology
Presbycusis - physiopathology
title Galectine-1 expression in cochleae of C57BL/6 mice during aging
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