1
|
Liu P, Xue X, Zhang C, Zhou H, Ding Z, Wang L, Jiang Y, Zhang Z, Shen W, Yang S, Wang F. Mid-Infrared Photons Alleviate Tinnitus by Activating the KCNQ2 Channel in the Auditory Cortex. RESEARCH (WASHINGTON, D.C.) 2024; 7:0479. [PMID: 39296986 PMCID: PMC11408936 DOI: 10.34133/research.0479] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/16/2024] [Revised: 08/29/2024] [Accepted: 08/29/2024] [Indexed: 09/21/2024]
Abstract
Tinnitus is a phantom auditory sensation often accompanied by hearing loss, cognitive impairments, and psychological disturbances in various populations. Dysfunction of KCNQ2 and KCNQ3 channels-voltage-dependent potassium ion channels-in the cochlear nucleus can cause tinnitus. Despite the recognized significance of KCNQ2 and KCNQ3 channels in the auditory cortex, their precise relationship and implications in the pathogenesis of tinnitus remain areas of scientific inquiry. This study aimed to elucidate the pathological roles of KCNQ2 and KCNQ3 channels within the auditory cortex in tinnitus development and examine the therapeutic potential of mid-infrared photons for tinnitus treatment. We utilized a noise-induced tinnitus model combined with immunofluorescence, electrophysiological recording, and molecular dynamic simulation to investigate the morphological and physiological alterations after inducing tinnitus. Moreover, in vivo irradiation was administered to verify the treatment effects of infrared photons. Tinnitus was verified by deficits of the gap ratio with similar prepulse inhibition ratio and auditory brainstem response threshold. We observed an important enhancement in neuronal excitability in the auditory cortex using patch-clamp recordings, which correlated with KCNQ2 and KCNQ3 channel dysfunction. After irradiation with infrared photons, excitatory neuron firing was inhibited owing to increased KCNQ2 current resulting from structural alterations in the filter region. Meanwhile, deficits of the acoustic startle response in tinnitus animals were alleviated by infrared photons. Furthermore, infrared photons reversed the abnormal hyperexcitability of excitatory neurons in the tinnitus group. This study provided a novel method for modulating neuron excitability in the auditory cortex using KCNQ2 channels through a nonthermal effect. Infrared photons effectively mitigated tinnitus-related behaviors by suppressing abnormal neural excitability, potentially laying the groundwork for innovative therapeutic approaches for tinnitus treatment.
Collapse
Affiliation(s)
- Peng Liu
- Senior Department of Otolaryngology Head and Neck Surgery, the 6th Medical Center of Chinese PLA General Hospital,
Chinese PLA Medical School, Beijing 100853, China
- State Key Laboratory of Hearing and Balance Science, Beijing 100853, China
- National Clinical Research Center for Otolaryngologic Diseases, Beijing 100853, China
- Key Laboratory of Hearing Science, Ministry of Education, Beijing 100853, China
- Beijing Key Laboratory of Hearing Impairment Prevention and Treatment, Beijing 100853, China
| | - Xinmiao Xue
- Senior Department of Otolaryngology Head and Neck Surgery, the 6th Medical Center of Chinese PLA General Hospital,
Chinese PLA Medical School, Beijing 100853, China
- State Key Laboratory of Hearing and Balance Science, Beijing 100853, China
- National Clinical Research Center for Otolaryngologic Diseases, Beijing 100853, China
- Key Laboratory of Hearing Science, Ministry of Education, Beijing 100853, China
- Beijing Key Laboratory of Hearing Impairment Prevention and Treatment, Beijing 100853, China
| | - Chi Zhang
- Senior Department of Otolaryngology Head and Neck Surgery, the 6th Medical Center of Chinese PLA General Hospital,
Chinese PLA Medical School, Beijing 100853, China
- State Key Laboratory of Hearing and Balance Science, Beijing 100853, China
- National Clinical Research Center for Otolaryngologic Diseases, Beijing 100853, China
- Key Laboratory of Hearing Science, Ministry of Education, Beijing 100853, China
- Beijing Key Laboratory of Hearing Impairment Prevention and Treatment, Beijing 100853, China
| | - Hanwen Zhou
- Senior Department of Otolaryngology Head and Neck Surgery, the 6th Medical Center of Chinese PLA General Hospital,
Chinese PLA Medical School, Beijing 100853, China
- State Key Laboratory of Hearing and Balance Science, Beijing 100853, China
- National Clinical Research Center for Otolaryngologic Diseases, Beijing 100853, China
- Key Laboratory of Hearing Science, Ministry of Education, Beijing 100853, China
- Beijing Key Laboratory of Hearing Impairment Prevention and Treatment, Beijing 100853, China
| | - Zhiwei Ding
- Senior Department of Otolaryngology Head and Neck Surgery, the 6th Medical Center of Chinese PLA General Hospital,
Chinese PLA Medical School, Beijing 100853, China
- State Key Laboratory of Hearing and Balance Science, Beijing 100853, China
- National Clinical Research Center for Otolaryngologic Diseases, Beijing 100853, China
- Key Laboratory of Hearing Science, Ministry of Education, Beijing 100853, China
- Beijing Key Laboratory of Hearing Impairment Prevention and Treatment, Beijing 100853, China
| | - Li Wang
- Senior Department of Otolaryngology Head and Neck Surgery, the 6th Medical Center of Chinese PLA General Hospital,
Chinese PLA Medical School, Beijing 100853, China
- State Key Laboratory of Hearing and Balance Science, Beijing 100853, China
- National Clinical Research Center for Otolaryngologic Diseases, Beijing 100853, China
- Key Laboratory of Hearing Science, Ministry of Education, Beijing 100853, China
- Beijing Key Laboratory of Hearing Impairment Prevention and Treatment, Beijing 100853, China
| | - Yuke Jiang
- Senior Department of Otolaryngology Head and Neck Surgery, the 6th Medical Center of Chinese PLA General Hospital,
Chinese PLA Medical School, Beijing 100853, China
- State Key Laboratory of Hearing and Balance Science, Beijing 100853, China
- National Clinical Research Center for Otolaryngologic Diseases, Beijing 100853, China
- Key Laboratory of Hearing Science, Ministry of Education, Beijing 100853, China
- Beijing Key Laboratory of Hearing Impairment Prevention and Treatment, Beijing 100853, China
| | - Zhixin Zhang
- Senior Department of Otolaryngology Head and Neck Surgery, the 6th Medical Center of Chinese PLA General Hospital,
Chinese PLA Medical School, Beijing 100853, China
- State Key Laboratory of Hearing and Balance Science, Beijing 100853, China
- National Clinical Research Center for Otolaryngologic Diseases, Beijing 100853, China
- Key Laboratory of Hearing Science, Ministry of Education, Beijing 100853, China
- Beijing Key Laboratory of Hearing Impairment Prevention and Treatment, Beijing 100853, China
| | - Weidong Shen
- Senior Department of Otolaryngology Head and Neck Surgery, the 6th Medical Center of Chinese PLA General Hospital,
Chinese PLA Medical School, Beijing 100853, China
- State Key Laboratory of Hearing and Balance Science, Beijing 100853, China
- National Clinical Research Center for Otolaryngologic Diseases, Beijing 100853, China
- Key Laboratory of Hearing Science, Ministry of Education, Beijing 100853, China
- Beijing Key Laboratory of Hearing Impairment Prevention and Treatment, Beijing 100853, China
| | - Shiming Yang
- Senior Department of Otolaryngology Head and Neck Surgery, the 6th Medical Center of Chinese PLA General Hospital,
Chinese PLA Medical School, Beijing 100853, China
- State Key Laboratory of Hearing and Balance Science, Beijing 100853, China
- National Clinical Research Center for Otolaryngologic Diseases, Beijing 100853, China
- Key Laboratory of Hearing Science, Ministry of Education, Beijing 100853, China
- Beijing Key Laboratory of Hearing Impairment Prevention and Treatment, Beijing 100853, China
| | - Fangyuan Wang
- Senior Department of Otolaryngology Head and Neck Surgery, the 6th Medical Center of Chinese PLA General Hospital,
Chinese PLA Medical School, Beijing 100853, China
- State Key Laboratory of Hearing and Balance Science, Beijing 100853, China
- National Clinical Research Center for Otolaryngologic Diseases, Beijing 100853, China
- Key Laboratory of Hearing Science, Ministry of Education, Beijing 100853, China
- Beijing Key Laboratory of Hearing Impairment Prevention and Treatment, Beijing 100853, China
| |
Collapse
|
2
|
Lai H, Gao M, Yang H. The potassium channels: Neurobiology and pharmacology of tinnitus. J Neurosci Res 2024; 102:e25281. [PMID: 38284861 DOI: 10.1002/jnr.25281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2023] [Revised: 10/27/2023] [Accepted: 11/16/2023] [Indexed: 01/30/2024]
Abstract
Tinnitus is a widespread public health issue that imposes a significant social burden. The occurrence and maintenance of tinnitus have been shown to be associated with abnormal neuronal activity in the auditory pathway. Based on this view, neurobiological and pharmacological developments in tinnitus focus on ion channels and synaptic neurotransmitter receptors in neurons in the auditory pathway. With major breakthroughs in the pathophysiology and research methodology of tinnitus in recent years, the role of the largest family of ion channels, potassium ion channels, in modulating the excitability of neurons involved in tinnitus has been increasingly demonstrated. More and more potassium channels involved in the neural mechanism of tinnitus have been discovered, and corresponding drugs have been developed. In this article, we review animal (mouse, rat, hamster, and guinea-pig), human, and genetic studies on the different potassium channels involved in tinnitus, analyze the limitations of current clinical research on potassium channels, and propose future prospects. The aim of this review is to promote the understanding of the role of potassium ion channels in tinnitus and to advance the development of drugs targeting potassium ion channels for tinnitus.
Collapse
Affiliation(s)
- Haohong Lai
- Department of Otolaryngology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Minqian Gao
- Department of Otolaryngology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
- Department of Hearing and Speech-Language Science, Guangzhou Xinhua University, Guangzhou, China
| | - Haidi Yang
- Department of Otolaryngology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
- Department of Hearing and Speech-Language Science, Guangzhou Xinhua University, Guangzhou, China
| |
Collapse
|
3
|
Nogueira I, Lima TZ, Malfatti T, Leao KE. Loud noise-exposure changes the firing frequency of subtypes of layer 5 pyramidal neurons and Martinotti cells in the mouse auditory cortex. Front Aging Neurosci 2023; 15:1152497. [PMID: 37213542 PMCID: PMC10192617 DOI: 10.3389/fnagi.2023.1152497] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Accepted: 04/17/2023] [Indexed: 05/23/2023] Open
Abstract
Introduction Loud noise-exposure can generate noise-induced tinnitus in both humans and animals. Imaging and in vivo studies show that noise exposure affects the auditory cortex; however, cellular mechanisms of tinnitus generation are unclear. Methods Here we compare membrane properties of layer 5 (L5) pyramidal cells (PCs) and Martinotti cells expressing the cholinergic receptor nicotinic alpha 2 subunit gene (Chrna2) of the primary auditory cortex (A1) from control and noise-exposed (4-18 kHz, 90 dB, 1.5 h, followed by 1.5 h silence) 5-8 week old mice. PCs were furthermore classified in type A or type B based on electrophysiological membrane properties, and a logistic regression model predicting that afterhyperpolarization (AHP) and afterdepolarization (ADP) are sufficient to predict cell type, and these features are preserved after noise trauma. Results One week after a loud noise-exposure no passive membrane properties of type A or B PCs were altered but principal component analysis showed greater separation between type A PCs from control and noise-exposed mice. When comparing individual firing properties, noise exposure differentially affected type A and B PC firing frequency in response to depolarizing current steps. Specifically, type A PCs decreased initial firing frequency in response to +200 pA steps (p = 0.020) as well as decreased steady state firing frequency (p = 0.050) while type B PCs, on the contrary, significantly increased steady state firing frequency (p = 0.048) in response to a + 150 pA step 1 week after noise exposure. In addition, L5 Martinotti cells showed a more hyperpolarized resting membrane potential (p = 0.04), higher rheobase (p = 0.008) and an increased initial (p = 8.5 × 10-5) and steady state firing frequency (p = 6.3 × 10-5) in slices from noise-exposed mice compared to control. Discussion These results show that loud noise can cause distinct effects on type A and B L5 PCs and inhibitory Martinotti cells of the primary auditory cortex 1 week following noise exposure. As the L5 comprises PCs that send feedback to other areas, loud noise exposure appears to alter levels of activity of the descending and contralateral auditory system.
Collapse
|
4
|
Bazard P, Ding B, Chittam HK, Zhu X, Parks TA, Taylor-Clark TE, Bhethanabotla VR, Frisina RD, Walton JP. Aldosterone up-regulates voltage-gated potassium currents and NKCC1 protein membrane fractions. Sci Rep 2020; 10:15604. [PMID: 32973172 PMCID: PMC7515911 DOI: 10.1038/s41598-020-72450-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Accepted: 07/12/2020] [Indexed: 02/02/2023] Open
Abstract
Na+-K+-2Cl- Cotransporter (NKCC1) is a protein that aids in the active transport of sodium, potassium, and chloride ions across cell membranes. It has been shown that long-term systemic treatment with aldosterone (ALD) can enhance NKCC1 protein expression and activity in the aging cochlea resulting in improved hearing. In the present work, we used a cell line with confirmed NKCC1 expression to demonstrate that in vitro application of ALD increased outward voltage-gated potassium currents significantly, and simultaneously upregulated whole lysate and membrane portion NKCC1 protein expression. These ALD-induced changes were blocked by applying the mineralocorticoid receptor antagonist eplerenone. However, application of the NKCC1 inhibitor bumetanide or the potassium channel antagonist Tetraethyl ammonium had no effect. In addition, NKKC1 mRNA levels remained stable, indicating that ALD modulates NKCC1 protein expression via the activation of mineralocorticoid receptors and post-transcriptional modifications. Further, in vitro electrophysiology experiments, with ALD in the presence of NKCC1, K+ channel and mineralocorticoid receptor inhibitors, revealed interactions between NKCC1 and outward K+ channels, mediated by a mineralocorticoid receptor-ALD complex. These results provide evidence of the therapeutic potential of ALD for the prevention/treatment of inner ear disorders such as age-related hearing loss.
Collapse
Affiliation(s)
- Parveen Bazard
- Department of Medical Engineering, College of Engineering, University of South Florida, Tampa, FL, 33620, USA
- Global Center for Hearing and Speech Research, University of South Florida, Tampa, FL, 33612, USA
| | - Bo Ding
- Department of Medical Engineering, College of Engineering, University of South Florida, Tampa, FL, 33620, USA
- Global Center for Hearing and Speech Research, University of South Florida, Tampa, FL, 33612, USA
| | - Harish K Chittam
- Department of Medical Engineering, College of Engineering, University of South Florida, Tampa, FL, 33620, USA
- Global Center for Hearing and Speech Research, University of South Florida, Tampa, FL, 33612, USA
| | - Xiaoxia Zhu
- Department of Medical Engineering, College of Engineering, University of South Florida, Tampa, FL, 33620, USA
- Global Center for Hearing and Speech Research, University of South Florida, Tampa, FL, 33612, USA
| | - Thomas A Parks
- Department of Molecular Pharmacology and Physiology, University of South Florida, Tampa, FL, 33620, USA
| | - Thomas E Taylor-Clark
- Department of Molecular Pharmacology and Physiology, University of South Florida, Tampa, FL, 33620, USA
| | - Venkat R Bhethanabotla
- Department of Chemical Engineering, College of Engineering, University of South Florida, Tampa, FL, 33620, USA
- Global Center for Hearing and Speech Research, University of South Florida, Tampa, FL, 33612, USA
| | - Robert D Frisina
- Department of Medical Engineering, College of Engineering, University of South Florida, Tampa, FL, 33620, USA
- Department Communication Sciences and Disorders, College of Behavioral and Communication Sciences, Tampa, FL, 33620, USA
- Department of Chemical Engineering, College of Engineering, University of South Florida, Tampa, FL, 33620, USA
- Global Center for Hearing and Speech Research, University of South Florida, Tampa, FL, 33612, USA
| | - Joseph P Walton
- Department of Medical Engineering, College of Engineering, University of South Florida, Tampa, FL, 33620, USA.
- Department Communication Sciences and Disorders, College of Behavioral and Communication Sciences, Tampa, FL, 33620, USA.
- Department of Chemical Engineering, College of Engineering, University of South Florida, Tampa, FL, 33620, USA.
- Global Center for Hearing and Speech Research, University of South Florida, Tampa, FL, 33612, USA.
| |
Collapse
|
5
|
Zhang W, Peng Z, Yu S, Song QL, Qu TF, Liu K, Gong SS. Exposure to sodium salicylate disrupts VGLUT3 expression in cochlear inner hair cells and contributes to tinnitus. Physiol Res 2019; 69:181-190. [PMID: 31852197 DOI: 10.33549/physiolres.934180] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
To examine whether exposure to sodium salicylate disrupts expression of vesicular glutamate transporter 3 (VGLUT3) and whether the alteration in expression corresponds to increased risk for tinnitus. Rats were treated with saline (control) or sodium salicylate (treated) Rats were examined for tinnitus by monitoring gap-pre-pulse inhibition of the acoustic startle reflex (GPIAS). Auditory brainstem response (ABR) was applied to evaluate hearing function after treatment. Rats were sacrificed after injection to obtain the cochlea, cochlear nucleus (CN), and inferior colliculus (IC) for examination of VGLUT3 expression. No significant differences in hearing thresholds between groups were identified (p>0.05). Tinnitus in sodium salicylate-treated rats was confirmed by GPIAS. VGLUT3 encoded by solute carrier family 17 members 8 (SLC17a8) expression was significantly increased in inner hair cells (IHCs) of the cochlea in treated animals, compared with controls (p<0.01). No significant differences in VGLUT3 expression between groups were found for the cochlear nucleus (CN) or IC (p>0.05). Exposure to sodium salicylate may disrupt SLC17a8 expression in IHCs, leading to alterations that correspond to tinnitus in rats. However, the CN and IC are unaffected by exposure to sodium salicylate, suggesting that enhancement of VGLUT3 expression in IHCs may contribute to the pathogenesis of tinnitus.
Collapse
Affiliation(s)
- W Zhang
- Department of Otolaryngology - Head and Neck Surgery, Beijing Friendship Hospital, Capital Medical University, Beijing, China, Z. Peng or K. Liu or S.-S. Gong
| | | | | | | | | | | | | |
Collapse
|
6
|
Qu T, Qi Y, Yu S, Du Z, Wei W, Cai A, Wang J, Nie B, Liu K, Gong S. Dynamic Changes of Functional Neuronal Activities Between the Auditory Pathway and Limbic Systems Contribute to Noise-Induced Tinnitus with a Normal Audiogram. Neuroscience 2019; 408:31-45. [PMID: 30946875 DOI: 10.1016/j.neuroscience.2019.03.054] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2018] [Revised: 03/25/2019] [Accepted: 03/26/2019] [Indexed: 12/20/2022]
Abstract
Tinnitus is thought to be triggered by aberrant neural activity in the central auditory pathway and is often accompanied by comorbidities of emotional distress and anxiety, which imply maladaptive functional connectivity to limbic structures, such as the amygdala and hippocampus. Tinnitus patients with normal audiograms can also have accompanying anxiety and depression, clinically. To test the role of functional connectivity between the central auditory pathway and limbic structures in patients with tinnitus with normal audiograms, we developed a murine noise-induced tinnitus model with a temporary threshold shift (TTS). Tinnitus mice exhibited reduced auditory brainstem response wave I amplitude, and an enhanced wave IV amplitude and wave IV/I amplitude ratio, as compared with control and non-tinnitus mice. Resting-state functional magnetic resonance imaging (fMRI) was used to identify abnormal connectivity of the amygdala and hippocampus and to determine the relationship with tinnitus characteristics. We found increased fMRI responses with amplitude of low-frequency fluctuation (ALFF) in the auditory cortex and decreased ALFF in the amygdala and hippocampus at day 1, but decreased ALFF in the auditory cortex and increased ALFF in the amygdala at day 28 post-noise exposure in tinnitus mice. Decreased functional connectivity between auditory brain regions and limbic structures was demonstrated at day 28 in tinnitus mice. Therefore, aberrant neural activities in tinnitus mice with TTS involved not only the central auditory pathway, but also limbic structures, and there was maladaptive functional connectivity between the central auditory pathway and limbic structures, such as the amygdala and hippocampus.
Collapse
Affiliation(s)
- Tengfei Qu
- Department of Otolaryngology Head and Neck Surgery, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - Yue Qi
- Department of Otolaryngology Head and Neck Surgery, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - Shukui Yu
- Department of Otolaryngology Head and Neck Surgery, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - Zhengde Du
- Department of Otolaryngology Head and Neck Surgery, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - Wei Wei
- Department of Otology, Shengjing Hospital of China Medical University, Shenyang 110004, China
| | - Aoling Cai
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Center for Magnetic Resonance, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, PR China; Key Laboratory of Magnetic Resonance in Biological Systems, Wuhan Center for Magnetic Resonance, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, PR China
| | - Jie Wang
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Center for Magnetic Resonance, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, PR China; Key Laboratory of Magnetic Resonance in Biological Systems, Wuhan Center for Magnetic Resonance, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, PR China
| | - Binbin Nie
- Beijing Engineering Research Center of Radiographic Techniques and Equipment, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China; School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Ke Liu
- Department of Otolaryngology Head and Neck Surgery, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China.
| | - Shusheng Gong
- Department of Otolaryngology Head and Neck Surgery, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China.
| |
Collapse
|
7
|
Tian K, Song Y, Zhou K, Yue B, Qiu Y, Sun F, Wang R, Zha D, Qiu J. Upregulation of HSP60 expression in the postnatal rat cochlea and rats with drug-induced hearing loss. Cell Stress Chaperones 2018; 23:1311-1317. [PMID: 30196524 PMCID: PMC6237686 DOI: 10.1007/s12192-018-0938-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Revised: 07/09/2018] [Accepted: 09/02/2018] [Indexed: 10/28/2022] Open
Abstract
Heat shock protein 60 (HSP60) is a highly conserved chaperone molecule that plays important roles in mediating some physiological and pathological functions. However, researchers have not yet determined whether HSP60 is expressed in the mammalian cochlea. This study constitutes the first investigation of the expression of HSP60 in the postnatal rat cochlea. We also examined the expression of HSP60 in rats with drug-induced hearing loss. Auditory thresholds were assessed by monitoring the auditory brainstem response (ABR) prior to and after drug injection. Expression levels of the HSP60 gene (Hsp60) and HSP60 protein in the rat cochlea were detected by quantitative real-time polymerase chain reaction and Western blotting, respectively. The distribution of HSP60 in the rat cochlea was further examined by immunofluorescence staining. We have demonstrated that HSP60 was expressed in the postnatal rat cochlea in an age-dependent and cell-specific manner. In addition, after drug exposure, the average hearing threshold of rats in the experimental group was significantly higher than that in the control group, with increased HSP60 expression level in response to kanamycin and furosemide treatments. HSP60 expression was observed in the supporting cells (SCs) within the organ of Corti in both the uninjured and the injured cochlea, but it was undetectable in the mechanosensory hair cells (HCs) and spiral ganglion neurons. Therefore, our research suggests that HSP60 may play an important role in auditory function.
Collapse
Affiliation(s)
- Keyong Tian
- Department of Otolaryngology-Head and Neck Surgery, Xijing Hospital, Fourth Military Medical University, 127 Changle Western Road, Xi'an, 710032, Shannxi Province, China
| | - Yongli Song
- Department of Otolaryngology-Head and Neck Surgery, Xijing Hospital, Fourth Military Medical University, 127 Changle Western Road, Xi'an, 710032, Shannxi Province, China
| | - Ke Zhou
- Department of Clinical Laboratory, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, China
| | - Bo Yue
- Department of Otolaryngology-Head and Neck Surgery, Xijing Hospital, Fourth Military Medical University, 127 Changle Western Road, Xi'an, 710032, Shannxi Province, China
| | - Yang Qiu
- Department of Otolaryngology-Head and Neck Surgery, Xijing Hospital, Fourth Military Medical University, 127 Changle Western Road, Xi'an, 710032, Shannxi Province, China
| | - Fei Sun
- Department of Otolaryngology-Head and Neck Surgery, Xijing Hospital, Fourth Military Medical University, 127 Changle Western Road, Xi'an, 710032, Shannxi Province, China
| | - Renfeng Wang
- Department of Otolaryngology-Head and Neck Surgery, Xijing Hospital, Fourth Military Medical University, 127 Changle Western Road, Xi'an, 710032, Shannxi Province, China
| | - Dingjun Zha
- Department of Otolaryngology-Head and Neck Surgery, Xijing Hospital, Fourth Military Medical University, 127 Changle Western Road, Xi'an, 710032, Shannxi Province, China
| | - Jianhua Qiu
- Department of Otolaryngology-Head and Neck Surgery, Xijing Hospital, Fourth Military Medical University, 127 Changle Western Road, Xi'an, 710032, Shannxi Province, China.
| |
Collapse
|
8
|
Rincón-Álvarez OJ, Neira-Torres LI. Alteraciones auditivas en artritis reumatoide, lupus eritematoso sistémico y síndrome de Sjögren. REVISTA DE LA FACULTAD DE MEDICINA 2018. [DOI: 10.15446/revfacmed.v66n3.60636] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Introducción. En la actualidad no hay cifras sobre las personas que padecen artritis reumatoide (AR), lupus eritematoso sistémico (LES) o síndrome de Sjögren (SS) ni información sobre las alteraciones auditivas que puede causar el tratamiento farmacológico utilizado para controlar dichas enfermedades.Objetivo. Evidenciar las posibles afectaciones y alteraciones audiológicas y vestibulares producidas por AR, LES y SS o su tratamiento farmacológico.Materiales y métodos. Se analizaron los hallazgos clínicos de herramientas diagnósticas y procedimientos de prevención e intervención de alteraciones auditivas en artículos de investigación publicados en español, inglés, francés y portugués en bases de datos científicas entre los años 2000 y 2016.Resultados. Se extrajeron 62 artículos de investigación (31 de AR, 5 de LES, 12 de SS, 5 de Hipoacusia inmunomediada, 9 de medicamentos ototóxicos), 1 tesis doctoral sobre AR, 1 tesis doctoral sobre AR y LES y 1 guía de práctica clínica para la detección temprana, diagnóstico y tratamiento de AR. Se evidenció que las pérdidas auditivas con mayor reporte son hipoacusia neurosensorial, lesiones en cadena osicular y vestíbulo-coclear.Conclusiones. Se confirmó la relación entre las lesiones audiológicas y AR, LES y SS, pero aun no es claro el desarrollo de los ototóxicos.
Collapse
|
9
|
Langguth B, Elgoyhen AB, Schlee W. Potassium channels as promising new targets for pharmacologic treatment of tinnitus: Can Internet-based ‘crowd sensing’ initiated by patients speed up the transition from bench to bedside? Expert Opin Ther Targets 2016; 20:251-4. [DOI: 10.1517/14728222.2016.1125884] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Berthold Langguth
- Department of Psychiatry and Psychotherapy, University of Regensburg, Regensburg, Germany
- Interdisciplinary Tinnitus Clinic, University of Regensburg, Regensburg, Germany
| | - Ana Belén Elgoyhen
- Instituto de Investigaciones en Ingeniería Genética y Biología Molecular Dr Héctor N Torres, Consejo Nacional de Investigaciones Científicas y Técnicas, Buenos Aires, Argentina
- Department of Pharmacology, University of Buenos Aires, School of Medicine, Buenos Aires, Argentina
| | - Winfried Schlee
- Department of Psychiatry and Psychotherapy, University of Regensburg, Regensburg, Germany
- Interdisciplinary Tinnitus Clinic, University of Regensburg, Regensburg, Germany
| |
Collapse
|