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Le Prell CG, Hammill TL, Murphy WJ. Noise-induced hearing loss and its prevention: Integration of data from animal models and human clinical trials. THE JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA 2019; 146:4051. [PMID: 31795668 PMCID: PMC7195863 DOI: 10.1121/1.5132951] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2019] [Accepted: 10/19/2019] [Indexed: 05/07/2023]
Abstract
Animal models have been used to gain insight into the risk of noise-induced hearing loss (NIHL) and its potential prevention using investigational new drug agents. A number of compounds have yielded benefit in pre-clinical (animal) models. However, the acute traumatic injury models commonly used in pre-clinical testing are fundamentally different from the chronic and repeated exposures experienced by many human populations. Diverse populations that are potentially at risk and could be considered for enrollment in clinical studies include service members, workers exposed to occupational noise, musicians and other performing artists, and children and young adults exposed to non-occupational (including recreational) noise. Both animal models and clinical populations were discussed in this special issue, followed by discussion of individual variation in vulnerability to NIHL. In this final contribution, study design considerations for NIHL otoprotection in pre-clinical and clinical testing are integrated and broadly discussed with evidence-based guidance offered where possible, drawing on the contributions to this special issue as well as other existing literature. The overarching goals of this final paper are to (1) review and summarize key information across contributions and (2) synthesize information to facilitate successful translation of otoprotective drugs from animal models into human application.
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Affiliation(s)
- Colleen G Le Prell
- School of Behavioral and Brain Sciences, University of Texas at Dallas, Dallas, Texas 75080, USA
| | - Tanisha L Hammill
- Department of Defense, Defense Health Agency, Falls Church, Virginia 22042, USA
| | - William J Murphy
- Division of Field Studies and Engineering, National Institute for Occupational Safety and Health, Cincinanati, Ohio 45226-1998, USA
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Park YH, Chung J, Lee MY, Lee DY, Kim YH. Cochlear Damage Caused by the Striking Noise of Titanium Head Golf Driver. Clin Exp Otorhinolaryngol 2018; 12:18-26. [PMID: 29717571 PMCID: PMC6315213 DOI: 10.21053/ceo.2017.01669] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Accepted: 02/22/2018] [Indexed: 11/28/2022] Open
Abstract
Objectives. To investigate how mouse cochleae are affected by the striking noise of titanium head golf driver. Methods. Thirty-two BALB/c mice (20–22 g) with normal hearing were used. The impact acoustic stimulus generated by the striking of titanium golf driver head was centered around 4.5 kHz with 120.5 dB sound pressure level. The recorded impact noise was provided to mice in two ways with the same exposure time of 288 seconds: 1,440 repetitions and an impact duration of 0.2 seconds for 2 hours (repetitive noise) or serially connected impact noise for 288 seconds (continuous noise). Auditory brainstem responses were measured at baseline, day 7, and day 14 after exposure. The mice were then sacrificed for histology. Results. Both groups showed statistically significant threshold shifts immediately after noise exposure. Mice in the continuous exposure group, except for those exposed to 32 kHz noise, recovered from threshold shifts 1–2 weeks after noise exposure. However, in the repetitive exposure group, threshold shifts remained for 2 weeks after exposure. The repetitive exposure group had greater hair cell damage than did the continuous exposure group. Structural changes in the stria vascularis were observed in the repetitive exposure group. Conclusion. Overexposure to impact noise caused by hitting of titanium head golf driver may be hazardous to the cochlea, and repetitive exposure may induce greater damage than continuous exposure.
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Affiliation(s)
- Yong-Ho Park
- Department of Otolaryngology-Head and Neck Surgery, Brain Research Institute, College of Medicine, Chungnam National University, Daejeon, Korea
| | - Juyong Chung
- Department of Otolaryngology-Head and Neck Surgery, Wonkwang University College of Medicine, Iksan, Korea
| | - Min Young Lee
- Department of Otorhinolaryngology-Head and Neck Surgery, Dankook University College of Medicine, Cheonan, Korea
| | - Doh Young Lee
- Department of Otorhinolaryngology-Head and Neck Surgery, SMG-SNU Boramae Medical Center, Seoul, Korea
| | - Young Ho Kim
- Department of Otorhinolaryngology-Head and Neck Surgery, SMG-SNU Boramae Medical Center, Seoul, Korea
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Wu Y, Ni J, Qi M, Cao C, Shao Y, Xu L, Ma H, Yang L. Associations of genetic variation in CASP3 gene with noise-induced hearing loss in a Chinese population: a case-control study. Environ Health 2017; 16:78. [PMID: 28738811 PMCID: PMC5525200 DOI: 10.1186/s12940-017-0280-y] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2017] [Accepted: 06/19/2017] [Indexed: 05/25/2023]
Abstract
BACKGROUND Noise-induced hearing loss (NIHL) is a complex disease caused by environmental and genetic risk factors. This study explored the relationship between the genetic variations in the CASP gene and the risk of developing NIHL among Chinese workers exposed to occupational noise. METHODS A case-control study of 272 NIHL workers and 272 normal-hearing workers matched for age, sex and years of noise exposure was conducted. Fifteen single-nucleotide polymorphisms (SNP) in the CASP1, CASP3, CASP4, CASP5, CASP6, CASP8, CASP9, CASP10 and CASP14 genes were genotyped using the polymerase chain reaction-ligase detection reaction method. Using conditional logistic regression models, the adjusted odds ratios (ORs) and 95% confidence intervals (CIs) of genetic variations associated with NIHL risk were calculated. RESULTS Two SNPs in the CASP3 gene were associated with NIHL risk. For rs1049216, TT genotype was associated with a decreased risk of NIHL (OR = 0.246, 95% CI = 0.069-0.886) when compared with the CC genotype. For rs6948, the AC and CC genotype were associated with a decreased NIHL risk (OR = 0.568, 95% CI = 0.352-0.916) compared with AA genotype. There were joint effects of working time and CASP3 polymorphisms on NIHL risk (P < 0.05). CONCLUSIONS Genetic variations in the CASP3 gene and the joint effects of working time and CASP3 polymorphisms may modify the risk of developing NIHL.
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Affiliation(s)
- Yinyin Wu
- Department of Preventive Medicine, School of Medicine, Hangzhou Normal University, Hangzhou 310018 Zhejiang, People’s Republic of China
| | - Juntao Ni
- Department of Preventive Medicine, School of Medicine, Hangzhou Normal University, Hangzhou 310018 Zhejiang, People’s Republic of China
| | - Mingjian Qi
- Department of Preventive Medicine, School of Medicine, Hangzhou Normal University, Hangzhou 310018 Zhejiang, People’s Republic of China
| | - Chengjian Cao
- Hangzhou hospital for prevention and treatment of occupational diseases, Hangzhou 310014 Zhejiang, People’s Republic of China
| | - Yuxian Shao
- Hangzhou hospital for prevention and treatment of occupational diseases, Hangzhou 310014 Zhejiang, People’s Republic of China
| | - Liangwen Xu
- Department of Preventive Medicine, School of Medicine, Hangzhou Normal University, Hangzhou 310018 Zhejiang, People’s Republic of China
| | - Haiyan Ma
- Department of Preventive Medicine, School of Medicine, Hangzhou Normal University, Hangzhou 310018 Zhejiang, People’s Republic of China
| | - Lei Yang
- Department of Preventive Medicine, School of Medicine, Hangzhou Normal University, Hangzhou 310018 Zhejiang, People’s Republic of China
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Hod R, Attias J, Raveh E, Nageris BI. Cochlear implantation via round window or cochleostomy: Effect on hearing in an animal model. Laryngoscope 2016; 126:E375-E378. [DOI: 10.1002/lary.26033] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2015] [Revised: 03/09/2016] [Accepted: 03/21/2016] [Indexed: 11/08/2022]
Affiliation(s)
- Roy Hod
- Department of Otorhinolaryngology; Schneider Children's Medical Center of Israel; Petah Tikva Tel Aviv Israel
- Sackler Faculty of Medicine; Tel Aviv University; Tel Aviv Israel
| | - Joseph Attias
- Department of Communication Sciences and Disorders; University of Haifa; Haifa Israel
- Institute of Audiology and Clinical Neurophysiology; Schneider Children's Medical Center of Israel; Petah Tikva Israel
| | - Eyal Raveh
- Department of Otorhinolaryngology; Schneider Children's Medical Center of Israel; Petah Tikva Tel Aviv Israel
- Sackler Faculty of Medicine; Tel Aviv University; Tel Aviv Israel
| | - Ben I. Nageris
- Sackler Faculty of Medicine; Tel Aviv University; Tel Aviv Israel
- Department of Otorhinolaryngology-Head and Neck Surgery; Meir Medical Center; Kfar Saba Israel
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Hearing loss patterns after cochlear implantation via the round window in an animal model. Am J Otolaryngol 2016; 37:162-8. [PMID: 26954875 DOI: 10.1016/j.amjoto.2015.12.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2015] [Revised: 11/29/2015] [Accepted: 12/07/2015] [Indexed: 11/20/2022]
Abstract
PURPOSE The mechanism and the type of hearing loss induced by cochlear implants are mostly unknown. Therefore, this study evaluated the impact and type of hearing loss induced by each stage of cochlear implantation surgery in an animal model. STUDY DESIGN Original basic research animal study. SETTING The study was conducted in a tertiary, university-affiliated medical center in accordance with the guidelines of the Institutional Animal Care and Use Committee. SUBJECTS AND METHODS Cochlear implant electrode array was inserted via the round window membrane in 17 ears of 9 adult-size fat sand rats. In 7 ears of 5 additional animals round window incision only was performed, followed by patching with a small piece of periosteum (control). Hearing thresholds to air (AC) and bone conduction (BC), clicks, 1 kHz and 6 kHz tone bursts were measured by auditory brainstem evoked potential, before, during each stage of surgery and one week post-operatively. In addition, inner ear histology was performed. RESULTS The degree of hearing loss increased significantly from baseline throughout the stages of cochlear implantation surgery and up to one week after (p<0.0001). In both operated groups, the greatest deterioration was noted after round window incision. Overall, threshold shift to air-conduction clicks, reached 61 dB SPL and the bone conduction threshold deteriorated by 19 dB SPL only. Similar losses were found for 1-kHz and 6-kHz frequencies. The hearing loss was not associated with significant changes in inner ear histology. CONCLUSIONS Hearing loss following cochlear implantation in normal hearing animals is progressive and of mixed type, but mainly conductive. Changes in the inner-ear mechanism are most likely responsible for the conductive hearing loss.
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Manohar S, Jamesdaniel S, Ding D, Salvi R, Seigel GM, Roth JA. Quantitative PCR analysis and protein distribution of drug transporter genes in the rat cochlea. Hear Res 2015; 332:46-54. [PMID: 26626361 DOI: 10.1016/j.heares.2015.10.020] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/12/2015] [Revised: 10/06/2015] [Accepted: 10/30/2015] [Indexed: 01/29/2023]
Abstract
Membrane transporters can be major determinants in the targeting and effectiveness of pharmaceutical agents. A large number of biologically important membrane transporters have been identified and localized to a variety of tissues, organs and cell types. However, little is known about the expression of key membrane transporters in the inner ear, a promising site for targeted therapeutics, as well as a region vulnerable to adverse drug reactions and environmental factors. In this study, we examined the levels of endogenous membrane transporters in rat cochlea by targeted PCR array analysis of 84 transporter genes, followed by validation and localization in tissues by immunohistochemistry. Our studies indicate that several members of the SLC, VDAC and ABC membrane transporter families show high levels of expression, both at the RNA and protein levels in the rat cochlea. Identification and characterization of these membrane transporters in the inner ear have clinical implications for both therapeutic and cytotoxic mechanisms that may aid in the preservation of auditory function.
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Affiliation(s)
| | - Samson Jamesdaniel
- Center for Hearing & Deafness, University at Buffalo, NY 14214, United States
| | - Dalian Ding
- Center for Hearing & Deafness, University at Buffalo, NY 14214, United States
| | - Richard Salvi
- Center for Hearing & Deafness, University at Buffalo, NY 14214, United States
| | - Gail M Seigel
- Center for Hearing & Deafness, University at Buffalo, NY 14214, United States; SUNY Eye Institute, New York, United States
| | - Jerome A Roth
- Department of Pharmacology and Toxicology, University at Buffalo, NY 14214, United States.
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Youm I, Youan BBC. Validated reverse-phase high-performance liquid chromatography for quantification of furosemide in tablets and nanoparticles. JOURNAL OF ANALYTICAL METHODS IN CHEMISTRY 2013; 2013:207028. [PMID: 24163777 PMCID: PMC3791803 DOI: 10.1155/2013/207028] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/25/2013] [Accepted: 08/07/2013] [Indexed: 06/02/2023]
Abstract
A simple, sensitive, and specific method for furosemide (FUR) analysis by reverse-phase-HPLC was developed using a Spherisorb C18 ODS 2 column. A chromatographic analysis was carried out using a mobile phase consisting of acetonitrile and 10 mM potassium phosphate buffer solution: 70 : 30 (v/v) at pH 3.85, at a flow rate of 1 mL·min(-1). The UV-detection method was carried out at 233 nm at room temperature. Validation parameters including limit of detection (LOD), limit of quantitation (LOQ), linearity range, precision, accuracy, robustness, and specificity were investigated. Results indicated that the calibration curve was linear (r (2) = 0.9997) in the range of 5.2 to 25,000 ng·mL(-1), with ε value equal to 3.74 × 10(4) L·M(-1) ·cm(-1). The LOD and LOQ were found to be 5.2 and 15.8 ng·mL(-1), respectively. The developed method was found to be accurate (RSD less than 2%), precise, and specific with an intraday and interday RSD range of 1.233-1.509 and 1.615 to 1.963%. The stability of native FUR has also been performed in simulated perilymph and endolymph media (with respective potency in each medium of 99.8 ± 2.3% and 96.68 ± 0.7%, n = 3) after 6 hours. This method may be routinely used for the quantitative analysis of FUR from nanocarriers, USP tablets and release media related to hearing research.
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Affiliation(s)
- Ibrahima Youm
- Laboratory of Future Nanomedecines and Theoretical Chronopharmaceutics, Division of Pharmaceutical Sciences, University of Missouri, Kansas City, MO 64110, USA
| | - Bi-Botti Celestin Youan
- Laboratory of Future Nanomedecines and Theoretical Chronopharmaceutics, Division of Pharmaceutical Sciences, University of Missouri, Kansas City, MO 64110, USA
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Gavriel H, Shulman A, Stracher A, Sohmer H. Leupeptin reduces impulse noise induced hearing loss. J Occup Med Toxicol 2011; 6:38. [PMID: 22206578 PMCID: PMC3286414 DOI: 10.1186/1745-6673-6-38] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2011] [Accepted: 12/29/2011] [Indexed: 01/23/2023] Open
Abstract
BACKGROUND Exposure to continuous and impulse noise can induce a hearing loss. Leupeptin is an inhibitor of the calpains, a family of calcium-activated proteases which promote cell death. The objective of this study is to assess whether Leupeptin could reduce the hearing loss resulting from rifle impulse noise. METHODS A polyethelene tube was implanted into middle ear cavities of eight fat sand rats (16 ears). Following determination of auditory nerve brainstem evoked response (ABR) threshold in each ear, the animals were exposed to the noise of 10 M16 rifle shots. Immediately after the exposure, saline was then applied to one (control) ear and non-toxic concentrations of leupeptin determined in the first phase of the study were applied to the other ear, for four consecutive days. RESULTS Eight days after the exposure, the threshold shift (ABR) in the control ears was significantly greater (44 dB) than in the leupeptin ears (27 dB). CONCLUSION Leupeptin applied to the middle ear cavity can reduce the hearing loss resulting from exposure to impulse noise.
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Affiliation(s)
- Haim Gavriel
- Department of Otolaryngology Head and Neck Surgery Assaf Harofeh Medical Center, Zerifin, Israel.
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