Details
| Original language | English |
|---|---|
| Pages (from-to) | 37-44 |
| Number of pages | 8 |
| Journal | Otology and Neurotology |
| Volume | 39 |
| Issue number | 1 |
| Publication status | Published - Jan 2018 |
Abstract
Objective: Biomarkers reflecting the etiology and pathophysiology of inner ear diseases are limited. Evaluation of proteins in the perilymph may improve our understanding of inner ear disease. Heat shock proteins (HSP) belong to a superfamily of stress proteins and promote refolding of denatured proteins. The aim of the study was to analyze HSP in human perilymph and to identify possible correlation with audiological and etiologic data.
Methods: Sampling of the perilymph was performed during cochlear implantation and vestibular schwannoma removal. Individual proteins were identified by a shot-gun proteomics approach by orbitrap mass spectrometry. Expression of HSP genes was determined in human cochlear tissue that was obtained during transcochlear surgeries.
Results: Ten subgroups of HSP were identified in human perilymph samples. Increased levels of HSP were detected in a higher percentage in the perilymph of patients with residual hearing when compared with patients with no residual hearing in cochlear implantation. In patients with complete preservation of residual hearing, HSP 90 is identified in a lower percentage whereas HSP 70 1A/1B and 6 was identified in all the samples. Constitutive expression of HSP family members was verified in normal cochlear tissue.
Conclusion: The 10 HSP variants are not identified in all the perilymph samples, but in a higher proportion in patients with residual hearing compared with patients with no residual hearing. In-depth proteome analysis of perilymph samples in correlation to patients' audiogram data shows an increased concentration of HSP in patients with residual hearing. An increase in specific HSP in patients with loss of residual hearing after cochlear implantation was not observed.
Keywords
- Cochlear implants, Hearing loss, Heat shock proteins, Otoprotection
ASJC Scopus subject areas
- Medicine(all)
- Otorhinolaryngology
- Neuroscience(all)
- Sensory Systems
- Medicine(all)
- Clinical Neurology
Sustainable Development Goals
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In: Otology and Neurotology, Vol. 39, No. 1, 01.2018, p. 37-44.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Heat Shock Proteins in Human Perilymph
T2 - Implications for Cochlear Implantation
AU - Schmitt, Heike
AU - Roemer, Ariane
AU - Zeilinger, Carsten
AU - Salcher, Rolf
AU - Durisin, Martin
AU - Staecker, Hinrich
AU - Lenarz, Thomas
AU - Warnecke, Athanasia
N1 - © 2017, Otology & Neurotology, Inc.
PY - 2018/1
Y1 - 2018/1
N2 - Objective: Biomarkers reflecting the etiology and pathophysiology of inner ear diseases are limited. Evaluation of proteins in the perilymph may improve our understanding of inner ear disease. Heat shock proteins (HSP) belong to a superfamily of stress proteins and promote refolding of denatured proteins. The aim of the study was to analyze HSP in human perilymph and to identify possible correlation with audiological and etiologic data. Methods: Sampling of the perilymph was performed during cochlear implantation and vestibular schwannoma removal. Individual proteins were identified by a shot-gun proteomics approach by orbitrap mass spectrometry. Expression of HSP genes was determined in human cochlear tissue that was obtained during transcochlear surgeries. Results: Ten subgroups of HSP were identified in human perilymph samples. Increased levels of HSP were detected in a higher percentage in the perilymph of patients with residual hearing when compared with patients with no residual hearing in cochlear implantation. In patients with complete preservation of residual hearing, HSP 90 is identified in a lower percentage whereas HSP 70 1A/1B and 6 was identified in all the samples. Constitutive expression of HSP family members was verified in normal cochlear tissue. Conclusion: The 10 HSP variants are not identified in all the perilymph samples, but in a higher proportion in patients with residual hearing compared with patients with no residual hearing. In-depth proteome analysis of perilymph samples in correlation to patients' audiogram data shows an increased concentration of HSP in patients with residual hearing. An increase in specific HSP in patients with loss of residual hearing after cochlear implantation was not observed.
AB - Objective: Biomarkers reflecting the etiology and pathophysiology of inner ear diseases are limited. Evaluation of proteins in the perilymph may improve our understanding of inner ear disease. Heat shock proteins (HSP) belong to a superfamily of stress proteins and promote refolding of denatured proteins. The aim of the study was to analyze HSP in human perilymph and to identify possible correlation with audiological and etiologic data. Methods: Sampling of the perilymph was performed during cochlear implantation and vestibular schwannoma removal. Individual proteins were identified by a shot-gun proteomics approach by orbitrap mass spectrometry. Expression of HSP genes was determined in human cochlear tissue that was obtained during transcochlear surgeries. Results: Ten subgroups of HSP were identified in human perilymph samples. Increased levels of HSP were detected in a higher percentage in the perilymph of patients with residual hearing when compared with patients with no residual hearing in cochlear implantation. In patients with complete preservation of residual hearing, HSP 90 is identified in a lower percentage whereas HSP 70 1A/1B and 6 was identified in all the samples. Constitutive expression of HSP family members was verified in normal cochlear tissue. Conclusion: The 10 HSP variants are not identified in all the perilymph samples, but in a higher proportion in patients with residual hearing compared with patients with no residual hearing. In-depth proteome analysis of perilymph samples in correlation to patients' audiogram data shows an increased concentration of HSP in patients with residual hearing. An increase in specific HSP in patients with loss of residual hearing after cochlear implantation was not observed.
KW - Cochlear implants
KW - Hearing loss
KW - Heat shock proteins
KW - Otoprotection
UR - http://www.scopus.com/inward/record.url?scp=85039444900&partnerID=8YFLogxK
U2 - 10.1097/MAO.0000000000001625
DO - 10.1097/MAO.0000000000001625
M3 - Article
C2 - 29227447
AN - SCOPUS:85039444900
VL - 39
SP - 37
EP - 44
JO - Otology and Neurotology
JF - Otology and Neurotology
SN - 1531-7129
IS - 1
ER -