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Sasidharan S, Singh V, Nasser A, Dhillon H, Babitha M. Perioperative hearing loss after nonotological surgeries – What is the role of anesthesia? INTERNATIONAL JOURNAL OF ACADEMIC MEDICINE 2022. [DOI: 10.4103/ijam.ijam_29_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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2
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Lin X, Luo J, Tan J, Yang L, Wang M, Li P. Experimental animal models of drug-induced sensorineural hearing loss: a narrative review. ANNALS OF TRANSLATIONAL MEDICINE 2021; 9:1393. [PMID: 34733945 PMCID: PMC8506545 DOI: 10.21037/atm-21-2508] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 05/16/2021] [Accepted: 08/16/2021] [Indexed: 01/19/2023]
Abstract
Objective This narrative review describes experimental animal models of sensorineural hearing loss (SNHL) caused by ototoxic agents. Background SNHL primarily results from damage to the sensory organ within the inner ear or the vestibulocochlear nerve (cranial nerve VIII). The main etiology of SNHL includes genetic diseases, presbycusis, ototoxic agents, infection, and noise exposure. Animal models with functional and anatomic damage to the sensory organ within the inner ear or the vestibulocochlear nerve mimicking the damage seen in humans are employed to explore the mechanism and potential treatment of SNHL. These animal models of SNHL are commonly established using ototoxic agents. Methods A literature search of PubMed, Embase, and Web of Science was performed for research articles on hearing loss and ototoxic agents in animal models of hearing loss. Conclusions Common ototoxic medications such as aminoglycoside antibiotics (AABs) and platinum antitumor drugs are extensively used to induce SNHL in experimental animals. The effect of ototoxic agents in vivo is influenced by the chemical mechanisms of the ototoxic agents, the species of animal, routes of administration of the ototoxic agents, and the dosage of ototoxic agents. Animal models of drug-induced SNHL contribute to understanding the hearing mechanism and reveal the function of different parts of the auditory system in humans.
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Affiliation(s)
- Xuexin Lin
- Department of Otolaryngology Head and Neck Surgery, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Jia Luo
- Department of Otolaryngology Head and Neck Surgery, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Jingqian Tan
- Department of Otolaryngology Head and Neck Surgery, The Eighth Affiliated Hospital of Sun Yat-sen University, Shenzhen, China
| | - Luoying Yang
- Department of Otolaryngology Head and Neck Surgery, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Mitian Wang
- Department of Otolaryngology Head and Neck Surgery, The Third Affiliated Hospital of Sun Yat-sen University Yuedong Hospital, Meizhou, China
| | - Peng Li
- Department of Otolaryngology Head and Neck Surgery, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
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Kim SH, Kim D, Lee JM, Lee SK, Kang HJ, Yeo SG. Review of Pharmacotherapy for Tinnitus. Healthcare (Basel) 2021; 9:healthcare9060779. [PMID: 34205776 PMCID: PMC8235102 DOI: 10.3390/healthcare9060779] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 06/15/2021] [Accepted: 06/16/2021] [Indexed: 11/16/2022] Open
Abstract
Various medications are currently used in the treatment of tinnitus, including anesthetics, antiarrhythmics, anticonvulsants, antidepressants, antihistamines, antipsychotics, anxiolytics, calcium channel blockers, cholinergic antagonists, NMDA antagonists, muscle relaxants, vasodilators, and vitamins. To date, however, no medications have been specifically approved to treat tinnitus by the US Food and Drug Administration (FDA). In addition, medicines used to treat other diseases, as well as foods and other ingested materials, can result in unwanted tinnitus. These include alcohol, antineoplastic chemotherapeutic agents and heavy metals, antimetabolites, antitumor agents, antibiotics, caffeine, cocaine, marijuana, nonnarcotic analgesics and antipyretics, ototoxic antibiotics and diuretics, oral contraceptives, quinine and chloroquine, and salicylates. This review, therefore, describes the medications currently used to treat tinnitus, including their mechanisms of action, therapeutic effects, dosages, and side-effects. In addition, this review describes the medications, foods, and other ingested agents that can induce unwanted tinnitus, as well as their mechanisms of action.
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Affiliation(s)
- Sang Hoon Kim
- Department of Otorhinolaryngology, Head and Neck Surgery, School of Medicine, Kyung Hee University, Seoul 02447, Korea; (S.H.K.); (J.-M.L.); (S.K.L.); (H.J.K.)
| | - Dokyoung Kim
- Department of Anatomy and Neurobiology, College of Medicine, Kyung Hee University, Seoul 02447, Korea;
| | - Jae-Min Lee
- Department of Otorhinolaryngology, Head and Neck Surgery, School of Medicine, Kyung Hee University, Seoul 02447, Korea; (S.H.K.); (J.-M.L.); (S.K.L.); (H.J.K.)
| | - Sun Kyu Lee
- Department of Otorhinolaryngology, Head and Neck Surgery, School of Medicine, Kyung Hee University, Seoul 02447, Korea; (S.H.K.); (J.-M.L.); (S.K.L.); (H.J.K.)
| | - Hee Jin Kang
- Department of Otorhinolaryngology, Head and Neck Surgery, School of Medicine, Kyung Hee University, Seoul 02447, Korea; (S.H.K.); (J.-M.L.); (S.K.L.); (H.J.K.)
| | - Seung Geun Yeo
- Department of Otorhinolaryngology, Head and Neck Surgery, School of Medicine, Kyung Hee University, Seoul 02447, Korea; (S.H.K.); (J.-M.L.); (S.K.L.); (H.J.K.)
- Correspondence: ; Tel.: +82-2-958-8980; Fax: +82-2-958-8470
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4
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Ding D, Prolla T, Someya S, Manohar S, Salvi R. Roles of Bak and Sirt3 in Paraquat-Induced Cochlear Hair Cell Damage. Neurotox Res 2021; 39:1227-1237. [PMID: 33900547 DOI: 10.1007/s12640-021-00366-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2021] [Revised: 04/16/2021] [Accepted: 04/19/2021] [Indexed: 12/22/2022]
Abstract
Paraquat, a superoxide generator, can damage the cochlea causing an ototoxic hearing loss. The purpose of the study was to determine if deletion of Bak, a pro-apoptotic gene, would reduce paraquat ototoxicity or if deletion of Sirt3, which delays age-related hearing loss under caloric restriction, would increase paraquat ototoxicity. We tested these two hypotheses by treating postnatal day 3 cochlear cultures from Bak±, Bak-/-, Sirt3±, Sirt3-/-, and WT mice with paraquat and compared the results to a standard rat model of paraquat ototoxicity. Paraquat damaged nerve fibers and dose-dependently destroyed rat outer hair cells (OHCs) and inner hair cells (IHCs). Rat hair cell loss began in the base of the cochlea with a 10 μM dose and as the dose increased from 50 to 500 μM, the hair cell loss increased near the base of the cochlea and spread toward the apex of the cochlea. Rat OHC losses were consistently greater than IHC losses. Unexpectedly, in all mouse genotypes, paraquat-induced hair cell lesions were maximal near the apex of the cochlea and minimal near the base. This unusual damage gradient is opposite to that seen in paraquat-treated rats and in mice and rats treated with other ototoxic drugs. However, paraquat always induced greater OHC loss than IHC loss in all mouse strains. Contrary to our hypothesis, Bak deficient mice were more vulnerable to paraquat ototoxicity than WT mice (Bak-/- > Bak± > WT), suggesting that Bak plays a protective role against hair cell stress. Also, contrary to expectation, Sirt3-deficient mice did not differ significantly from WT mice, possibly due to the fact that Sirt3 was not experimentally upregulated in Sirt3-expressing mice prior to paraquat treatment. Our results show for the first time a gradient of ototoxic damage in mice that is greater in the apex than the base of the cochlea.
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MESH Headings
- Animals
- Animals, Newborn
- Cells, Cultured
- Cochlea/drug effects
- Cochlea/metabolism
- Cochlea/pathology
- Dose-Response Relationship, Drug
- Female
- Hair Cells, Auditory, Inner/drug effects
- Hair Cells, Auditory, Inner/metabolism
- Hair Cells, Auditory, Inner/pathology
- Hair Cells, Auditory, Outer/drug effects
- Hair Cells, Auditory, Outer/metabolism
- Hair Cells, Auditory, Outer/pathology
- Herbicides/toxicity
- Male
- Mice
- Mice, Inbred C57BL
- Mice, Knockout
- Organ Culture Techniques
- Paraquat/toxicity
- Rats
- Rats, Sprague-Dawley
- Sirtuin 3/deficiency
- Sirtuin 3/genetics
- bcl-2 Homologous Antagonist-Killer Protein/deficiency
- bcl-2 Homologous Antagonist-Killer Protein/genetics
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Affiliation(s)
- Dalian Ding
- Center for Hearing and Deafness, State University of New York at Buffalo, 137 Cary Hall, Buffalo, NY, 14214, USA
| | - Tomas Prolla
- Department of Genetics and Medical Genetics, University of Wisconsin, 702 W Johnson St 1101, Madison, WI, 53715, USA
| | - Shinichi Someya
- Department of Aging and Geriatrics, University of Florida, Gainsville, FL, 32611, USA
| | - Senthilvelan Manohar
- Center for Hearing and Deafness, State University of New York at Buffalo, 137 Cary Hall, Buffalo, NY, 14214, USA
| | - Richard Salvi
- Center for Hearing and Deafness, State University of New York at Buffalo, 137 Cary Hall, Buffalo, NY, 14214, USA.
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5
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Abstract
Cisplatin, an effective antineoplastic drug used in the treatment of many cancers, has ototoxic potential, thus placing cancer patients, receiving this treatment, at risk of hearing loss. It is therefore important for health care professionals managing these patients to be aware of cisplatin's ototoxic properties and its clinical signs to identify patients at risk of developing a hearing impairment. Eighty-five English peer-reviewed articles and two books, from January 1975 to July 2015, were identified from PubMed, ScienceDirect, and EBSCOhost. An overview of cisplatin-associated ototoxicity, namely its clinical features, incidence rates, molecular and cellular mechanisms, and risk factors, is presented in this article. This review further highlights the importance of a team-based approach to complement an audiological monitoring program in reducing any further loss in the quality of life of affected patients, as there is currently no otoprotective agent routinely recommended for the prevention of cisplatin-associated ototoxicity.
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Affiliation(s)
- Jessica Paken
- Discipline of Audiology, School of Health Sciences, University of KwaZulu-Natal, Durban, South Africa
| | - Cyril D. Govender
- Discipline of Audiology, School of Health Sciences, University of KwaZulu-Natal, Durban, South Africa
| | - Mershen Pillay
- Discipline of Audiology, School of Health Sciences, University of KwaZulu-Natal, Durban, South Africa
| | - Vikash Sewram
- African Cancer Institute
- Division of Health Systems and Public Health, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa
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6
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Paken J, Govender CD, Pillay M, Sewram V. Cisplatin-Associated Ototoxicity: A Review for the Health Professional. J Toxicol 2016; 2016:1809394. [PMID: 28115933 PMCID: PMC5223030 DOI: 10.1155/2016/1809394] [Citation(s) in RCA: 74] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2016] [Revised: 11/07/2016] [Accepted: 11/08/2016] [Indexed: 01/01/2023] Open
Abstract
Cisplatin is an effective drug used in the treatment of many cancers, yet its ototoxic potential places cancer patients, exposed to this drug, at risk of hearing loss, thus negatively impacting further on a patient's quality of life. It is paramount for health care practitioners managing such patients to be aware of cisplatin's ototoxic properties and the clinical signs to identify patients at risk of developing hearing loss. English peer-reviewed articles from January 1975 to July 2015 were assessed from PubMed, Science Direct, and Ebscohost. Seventy-nine articles and two books were identified for this review, using MeSH terms and keywords such as "ototoxicity", "cisplatin", "hearing loss", and "ototoxicity monitoring". This review provides an up-to-date overview of cisplatin-associated ototoxicity, namely, its clinical features, incidence rates, and molecular and cellular mechanisms and risk factors, to health care practitioners managing the patient with cancer, and highlights the need for a team-based approach to complement an audiological monitoring programme to mitigate any further loss in the quality of life of affected patients, as there is currently no otoprotective agent recommended routinely for the prevention of cisplatin-associated ototoxicity. It also sets the platform for effective dialogue towards policy formulation and strengthening of health systems in developing countries.
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Affiliation(s)
- Jessica Paken
- Discipline of Audiology, School of Health Sciences, University of KwaZulu-Natal, Private Bag X54001, Durban 4000, South Africa
| | - Cyril D. Govender
- Discipline of Audiology, School of Health Sciences, University of KwaZulu-Natal, Private Bag X54001, Durban 4000, South Africa
| | - Mershen Pillay
- Discipline of Audiology, School of Health Sciences, University of KwaZulu-Natal, Private Bag X54001, Durban 4000, South Africa
| | - Vikash Sewram
- Discipline of Audiology, School of Health Sciences, University of KwaZulu-Natal, Private Bag X54001, Durban 4000, South Africa
- African Cancer Institute, Faculty of Medicine and Health Sciences, Stellenbosch University, P.O. Box 241, Cape Town 8000, South Africa
- Division of Community Health, Faculty of Medicine and Health Sciences, Stellenbosch University, P.O. Box 241, Cape Town 8000, South Africa
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7
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The Effects of Salicylate on Auditory Evoked Potential Amplitwde from the Auditory Cortex and Auditory Brainstem. J Otol 2014. [DOI: 10.1016/s1672-2930(14)50006-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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8
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Henry JA, Roberts LE, Caspary DM, Theodoroff SM, Salvi RJ. Underlying mechanisms of tinnitus: review and clinical implications. J Am Acad Audiol 2014; 25:5-22; quiz 126. [PMID: 24622858 PMCID: PMC5063499 DOI: 10.3766/jaaa.25.1.2] [Citation(s) in RCA: 155] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
BACKGROUND The study of tinnitus mechanisms has increased tenfold in the last decade. The common denominator for all of these studies is the goal of elucidating the underlying neural mechanisms of tinnitus with the ultimate purpose of finding a cure. While these basic science findings may not be immediately applicable to the clinician who works directly with patients to assist them in managing their reactions to tinnitus, a clear understanding of these findings is needed to develop the most effective procedures for alleviating tinnitus. PURPOSE The goal of this review is to provide audiologists and other health-care professionals with a basic understanding of the neurophysiological changes in the auditory system likely to be responsible for tinnitus. RESULTS It is increasingly clear that tinnitus is a pathology involving neuroplastic changes in central auditory structures that take place when the brain is deprived of its normal input by pathology in the cochlea. Cochlear pathology is not always expressed in the audiogram but may be detected by more sensitive measures. Neural changes can occur at the level of synapses between inner hair cells and the auditory nerve and within multiple levels of the central auditory pathway. Long-term maintenance of tinnitus is likely a function of a complex network of structures involving central auditory and nonauditory systems. CONCLUSIONS Patients often have expectations that a treatment exists to cure their tinnitus. They should be made aware that research is increasing to discover such a cure and that their reactions to tinnitus can be mitigated through the use of evidence-based behavioral interventions.
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Affiliation(s)
- James A. Henry
- VA RR&D National Center for Rehabilitative Auditory Research (NCRAR), VA Medical Center, Portland, OR
- Department of Otolaryngology/Head and Neck Surgery, Oregon Health and Science University, Portland, OR
| | - Larry E. Roberts
- Department of Psychology, Neuroscience, and Behaviour, McMaster University, Hamilton, Ontario, Canada
| | - Donald M. Caspary
- Pharmacology Department, Southern Illinois University School of Medicine, Springfield, IL
| | - Sarah M. Theodoroff
- VA RR&D National Center for Rehabilitative Auditory Research (NCRAR), VA Medical Center, Portland, OR
- Department of Otolaryngology/Head and Neck Surgery, Oregon Health and Science University, Portland, OR
| | - Richard J. Salvi
- Center for Hearing and Deafness, University of Buffalo, Buffalo, NY
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9
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Methadone, another cause of opioid-associated hearing loss: a case report. J Emerg Med 2010; 41:635-9. [PMID: 21145191 DOI: 10.1016/j.jemermed.2010.11.014] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2009] [Revised: 03/15/2010] [Accepted: 11/03/2010] [Indexed: 10/18/2022]
Abstract
BACKGROUND Methadone has been used for many years in the clinical setting and has many well-described side effects. In recent years, the use of methadone and other opioids have been increasing throughout the United States (US), and presentations to US Emergency Departments (EDs) due to opioid use and abuse are increasing as well. OBJECTIVES As methadone and opioid use increases, ED physicians should be aware of infrequently seen side effects and toxicities associated with the use of these drugs. CASE REPORT We report the case of a previously healthy 20-year-old man who presented with acute onset of bilateral hearing loss secondary to an unintentional methadone overdose. At follow-up, the patient's hearing had returned to normal, with the only intervention being abstinence from methadone. CONCLUSION Although bilateral hearing loss is a rare toxic finding of opioid ingestion, given the prevalence of opioid use, this etiology should be considered in any patient presenting with this chief complaint.
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10
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Mostafa BE, Tawfik S, Hefnawi NGE, Hassan MA, Ismail FA. The role of deferoxamine in the prevention of gentamicin ototoxicity: a histological and audiological study in guinea pigs. Acta Otolaryngol 2007; 127:234-9. [PMID: 17364358 DOI: 10.1080/00016480600794495] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
CONCLUSION The addition of deferoxamine to gentamicin seems to confer partial functional and histological protection to the cochlea. OBJECTIVE Aminoglycosides are known ototoxic agents. The toxicity occurs via an activation process involving the formation of an iron-gentamicin complex with free radical production. Iron chelation will supposedly limit this toxic effect. This study aimed to determine the possible cochleoprotective role of deferoxamine on the ototoxic effect of gentamicin. MATERIALS AND METHODS Sixty healthy active guinea pigs, weighing 400-600 g, with an average age of 6 months were used. They were divided into three groups. Group 1 received intramuscular gentamicin 8 mg/kg/day, group 2 received gentamicin 8 mg/kg/day and deferoxamine 150 mg/kg twice daily for 19 days and group 3 served as a control. All animals had a baseline measurement of distortion product oto-acoustic emissions. At the end of 33 days they were submitted to another measurement and then the animals were sacrificed and their cochleas were examined histologically by light and transmission electron microscopy. RESULTS In group 1 the mean amplitude post-injection ranged from 5.83 dB at 1001 Hz to 22.33 dB at 6348 Hz. In the deferoxamine + gentamicin group the mean amplitude post-injection ranged from 5.10 dB at 1001 Hz, to 24.45 dB at 6348 Hz. This was statistically significant. At 4004, 5042 and 6348 Hz group 2 showed less histological damage than group 1.
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MESH Headings
- Animals
- Cell Survival/physiology
- Cochlea/drug effects
- Cochlea/pathology
- Cochlea/physiopathology
- Deferoxamine/pharmacology
- Gentamicins/antagonists & inhibitors
- Gentamicins/toxicity
- Guinea Pigs
- Hair Cells, Auditory, Inner/drug effects
- Hair Cells, Auditory, Inner/pathology
- Hair Cells, Auditory, Inner/physiopathology
- Hair Cells, Auditory, Outer/drug effects
- Hair Cells, Auditory, Outer/pathology
- Hair Cells, Auditory, Outer/physiopathology
- Injections, Intramuscular
- Iron Chelating Agents/pharmacology
- Microscopy, Electron, Scanning
- Organ of Corti/drug effects
- Organ of Corti/pathology
- Organ of Corti/physiopathology
- Otoacoustic Emissions, Spontaneous/drug effects
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Affiliation(s)
- Badr Eldin Mostafa
- Department of Otorhinolaryngology, Ain-Shams Faculty of Medicine, Cairo, Egypt.
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11
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Rademaker-Lakhai JM, Crul M, Zuur L, Baas P, Beijnen JH, Simis YJW, van Zandwijk N, Schellens JHM. Relationship Between Cisplatin Administration and the Development of Ototoxicity. J Clin Oncol 2006; 24:918-24. [PMID: 16484702 DOI: 10.1200/jco.2006.10.077] [Citation(s) in RCA: 115] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Purpose To determine the auditory toxicity associated with dose- and schedule- intensive cisplatin/gemcitabine chemotherapy in non–small-cell lung carcinoma patients. Patients and Methods Patients were treated with gemcitabine followed by cisplatin according to an interpatient dose-escalation scheme. Patients were randomly assigned to receive treatment once a week for 6 weeks or once every 2 weeks for 4 weeks. The following cohorts of patients were treated with a reversed schedule once every 2 weeks, in which cisplatin was followed by gemcitabine. The dose-intensity of cisplatin was equal in both schedules. Audiometric evaluations were obtained for each ear at several frequencies. Mean hearing loss after cisplatin treatment was computed for each dose level at each tested frequency in each ear at baseline and subsequent follow-up audiometry. Pure tone averages (PTAs) were also calculated. The pharmacokinetics of cisplatin was determined to study the correlation among the maximum drug concentration, the area under the curve of unbound platinum, and the development of ototoxicity. Results A total of 328 audiograms were analyzed. At the higher frequencies, a more severe hearing impairment was recorded. Most patients showed a decrease in hearing thresholds at dosages above 60 mg/m2 cisplatin at the higher frequencies. PTAs at 1, 2, and 4 kHz show a mean hearing loss of 19 dB after cisplatin administration at dosages above 90 mg/m2. Threshold shifts at 8 and 12.5 kHz after cisplatin administration were experienced at dosages above 60 mg/m2. Conclusion Hearing loss after cisplatin therapy occurs mainly at high frequencies and at cisplatin dosages more than 60 mg/m2. It is more pronounced when cisplatin is given once every 2 weeks.
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Affiliation(s)
- Jeany M Rademaker-Lakhai
- Netherlands Cancer Institute/Antoni van Leeuwenhoek Hospital and Department of Audiology, Academic Medical Center, Amsterdam, The Netherlands.
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12
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Affiliation(s)
- Hassan H Ramadan
- Department of Otolaryngology-Head and Neck Surgery, West Virginia University, Morgantown, West Virginia, USA
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13
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Shotland LI, Ondrey FG, Mayo KA, Viner JL. Recommendations for cancer prevention trials using potentially ototoxic test agents. J Clin Oncol 2001; 19:1658-63. [PMID: 11250994 DOI: 10.1200/jco.2001.19.6.1658] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
PURPOSE Preventive oncology applies pharmacologic agents to reverse, retard, or halt progression of neoplastic cells to invasive malignancy, a process that may require administration of agents over long periods of time. Although ototoxicity may be a tolerable side effect of anticancer or antimicrobial therapy, even modest ototoxicity may not be acceptable in agents developed for preventive oncology that are routinely administered to subjects who neither are, nor necessarily will become, clinically ill. MATERIALS AND METHODS Age-related shifts in hearing may occur over the course of longterm or open-ended therapy; consequently, age-adjusted norms enable researchers to better distinguish hearing loss caused by drugs from that caused by aging. Norms for hearing sensitivity are derived from the Baltimore Longitudinal Study of Aging and are the basis for the proposed audiologic monitoring recommendations. RESULTS Audiologic monitoring recommendations are presented that standardize patient selection, adverse event reporting, posttreatment follow-up, and audiologic testing for potentially ototoxic investigational agents. CONCLUSION These recommendations are applicable to trials of investigational agents as well as various classes of drugs used in routine clinical care.
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Affiliation(s)
- L I Shotland
- Hearing Section, Neuro-Otology Branch, National Institute on Deafness and Other Communication Disorders, National Institutes of Health, Bethesda, MD 20892, USA
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15
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Schaab KC, Dickinson ET, Setzen G. Acute sensorineural hearing loss following intravenous ketoralac administration. J Emerg Med 1995; 13:509-13. [PMID: 7594371 DOI: 10.1016/0736-4679(95)80009-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Ketoralac is an injectable nonsteroidal antiinflammatory drug (NSAID) widely used in both out-patient and in-patient settings. Side effects such as acute renal failure, hyperkalemia, gastritis, gastrointestinal bleeding, and asthmatic exacerbation, although rare, have been previously reported. We report the case of a 20-year-old female with polyarteritis nodosa (PAN) who developed bilateral sensorineural hearing loss 25 minutes after receiving 30 mg of intravenous ketoralac. The patient denied any previous medication sensitivities, and was taking oral methotrexate and prednisone at the time of emergency department admission. Both PAN and methotrexate have been independently demonstrated to cause sensorineural hearing loss. We postulate that the patient's hearing loss was the result of ketoralac's direct and indirect ototoxic effects that were potentiated as a result of her underlying illness and medications. We recommend the cautious use of ketorolac in patients with underlying illnesses where NSAID-induced ototoxicity could result in adverse otologic consequences.
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Affiliation(s)
- K C Schaab
- Albany Medical College, Department of Emergency Medicine, NY 12208, USA
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16
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Bartolami S, Planche M, Pujol R. Effects of ototoxins on quinuclidinyl benzylate binding in the rat cochlea. Neurosci Lett 1994; 174:169-72. [PMID: 7970174 DOI: 10.1016/0304-3940(94)90013-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Ototoxins inhibit the muscarinic receptor-activated inositol phosphate synthesis in the rat cochlea. In order to study this inhibitory mechanism, we investigated the effects of the ototoxins ethacrynate, cisplatin, HgCl2 and neomycin on [3H]quinuclidinyl benzylate binding to muscarinic receptors in adult and 12-day-old rat cochleas. The results are similar whatever the age: at concentrations that inhibit the inositol phosphate synthesis, ethacrynate is without effect. Neomycin only reduces [3H]quinuclidinyl benzylate binding at concentrations in the millimolar range. Cisplatin and HgCl2 block the binding in a dose-dependent way. These results suggest that the block of the transduction system by cisplatin and HgCl2 is due to direct interactions with muscarinic binding sites. Moreover, considering these data together with previous results, ethacrynate and neomycin may affect the phosphoinositide signalling pathway at targets including phosphoinositides and G proteins.
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Affiliation(s)
- S Bartolami
- Laboratoire de Neurobiologie de l'Audition, INSERM U254, CHU Saint Charles, Montpellier, France
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17
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Kotecha B, Richardson GP. Ototoxicity in vitro: effects of neomycin, gentamicin, dihydrostreptomycin, amikacin, spectinomycin, neamine, spermine and poly-L-lysine. Hear Res 1994; 73:173-84. [PMID: 7514588 DOI: 10.1016/0378-5955(94)90232-1] [Citation(s) in RCA: 58] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
The effects that the aminoglycoside-aminocyclitol antibiotics amikacin, dihydrostreptomycin, gentamicin, neomycin, and spectinomycin, the neomycin fragment neamine, and the polybasic compounds spermine and poly-L-lysine, have on outer hair cells in cochlear cultures prepared from the early post-natal mouse have been assessed using both scanning and transmission electron microscopy (SEM and TEM). The antibiotics were used at concentrations ranging from 0.25-1.0 mM, spermine from 10 microM to 3.0 mM, and poly-L-lysine from 0.05-2 microM. Qualitative assessment of apical surface damage allows the antibiotics to be ranked in the following order: neomycin > gentamicin > dihydrostreptomycin > amikacin > neamine > spectinomycin. At a concentration of 1 mM spectinomycin is essentially non-toxic and the effects of neamine are marginal. Poly-L-lysine and spermine also cause surface damage, with poly-L-lysine being substantially more toxic than any of the antibiotics, and spermine ranking, on the basis of SEM observations, between dihydrostreptomycin and amikacin. TEM indicates that although all toxic compounds cause damage to the apical surface of the hair cell, only neomycin, poly-L-lysine and spermine induce the formation of whorls of tightly packed membrane resembling myelin within the apical surface lesions to any great extent. Apical-surface changes induced by dihydrostreptomycin and amikacin are simply large distensions of the cell filled with cytoplasmic organelles of normal appearance. Although the effects of the aminoglycoside antibiotics are largely limited to the apical surface of the cell, poly-L-lysine induces complete necrosis of the cell, and spermine causes a dramatic increase in cytoplasmic electron density and condensation of the nuclear chromatin.
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Affiliation(s)
- B Kotecha
- School of Biological Sciences, University of Sussex, Falmer, Brighton, UK
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Forge A, Richardson G. Freeze fracture analysis of apical membranes in cochlear cultures: differences between basal and apical-coil outer hair cells and effects of neomycin. JOURNAL OF NEUROCYTOLOGY 1993; 22:854-67. [PMID: 8270950 DOI: 10.1007/bf01186357] [Citation(s) in RCA: 52] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Previous studies have shown that exposure of cochlear cultures to the ototoxic aminoglycoside antibiotic neomycin leads to the rapid formation of numerous membrane filled protrusions on the apical surface of the hair cells but not on the surrounding supporting cells, and that hair cells in basal-coil cultures are more sensitive to these effects of neomycin than those in the distal end of apical-coil cultures. Freeze-fracture has been used to examine and compare the apical surfaces of hair cells and supporting cells in basal and apical-coil cultures in order to look for features that may explain the differential sensitivity of the various cell types to neomycin, and to characterize the membrane type that forms in response to neomycin and compare it with the normal apical membrane of the hair cell. The apical surface of the highly responsive basal-coil outer hair cells differs significantly from the apical surfaces of apical-coil outer hair cells and supporting cells in both regions of the cochlea in both surface area and the number and density of endocytotic vesicles associated with this surface. Basal-coil hair cells have an average of 120 +/- 39 vesicles per cell surface and a density of 3.5 +/- 0.89 vesicles per microns 2, whereas apical-coil hair cells have 14.8 +/- 15.8 vesicles/cell surface and density of 0.73 +/- 0.72 vesicles per microns 2. There are no significant differences in intramembrane particle (IMP) density on the apical surfaces of all the cell types examined, and qualitative observations of filipin-treated specimens indicate that cholesterol densities are also similar. The membrane that accumulates in response to neomycin treatment at the apical pole of the hair cell is IMP free, does not respond to filipin, and fractures in a manner that is indicative of a high content of unsaturated phospholipid in a fluid phase, and is therefore different in several respects from the normal apical surface of the hair cell. The results of this study suggest that apical surface associated endocytotic vesicle numbers may determine the differential sensitivity of apical and basal-coil hair cells to neomycin, and that neomycin may interfere with some aspect of phospholipid metabolism or membrane turnover in sensory hair cells.
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Affiliation(s)
- A Forge
- Institute of Laryngology and Otology, University College London, UK
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Bartolami S, Planche M, Pujol R. Sulphhydryl-modifying reagents alter ototoxin block of muscarinic receptor-linked phosphoinositide turnover in the cochlea. Eur J Neurosci 1993; 5:832-8. [PMID: 8281295 DOI: 10.1111/j.1460-9568.1993.tb00935.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
In the 12-day-old rat cochlea, the synthesis of inositol phosphates (IPs) can be activated via M3 cholinoceptors. This stimulation is blocked by ototoxins (mercury, ethacrynate, cisplatin, neomycin), drugs with side effects that lead to damage of hair cells and strial cells. As these toxic effects can be reversed in vivo by thiol molecules, we investigated whether modifications of thiol compounds could be involved in ototoxin-induced inhibition of the IP turnover in the cochlea. For this purpose, we assessed whether the sulphhydryl-modifying reagents N-ethylmaleimide and cadmium modify the carbachol-stimulated formation of IPs in the 12-day-old rat cochlea. Both molecules inhibit the carbachol effect on a dose-dependent way without altering the basal metabolism of IPs. As cadmium may block some calcium channels, the effect of verapamil, another calcium channel antagonist, was tested. Verapamil (1-50 microM) does not alter carbachol-evoked IP formation, suggesting that the inhibitory effect of cadmium is not due to a calcium influx block. Binding experiments with the muscarinic ligand quinuclidinyl benzylate (QNB) showed that the sulphhydryl-modifying reagents do not displace QNB from binding sites. Combining ototoxins and reagents shows that N-ethylmaleimide acts synergistically with all ototoxins but ethacrynate while cadmium does so only with mercury. Both N-ethylmaleimide and cadmium have additive effects with ethacrynate. As a supplement, disulphide bond-modifying agents do not alter the carbachol-enhanced metabolism of IPs. These results suggest that molecules having thiol-modifying properties inhibit the carbachol-induced turnover of IPs without acting at the muscarinic sites.(ABSTRACT TRUNCATED AT 250 WORDS)
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Affiliation(s)
- S Bartolami
- INSERM U. 254, Laboratorie de Neurobiologie de l'Audition, CHU St. Charles, Montpellier, France
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Sacristán JA, Soto JA, de Cos MA. Erythromycin-induced hypoacusis: 11 new cases and literature review. Ann Pharmacother 1993; 27:950-5. [PMID: 8364281 DOI: 10.1177/106002809302700724] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
OBJECTIVE To report 11 cases of possible erythromycin-induced hearing loss and to review all cases reported in the literature. CASE SUMMARY In the 11 cases reported, the following are reviewed: age, gender, time to onset of and recovery from hypoacusis in relation to erythromycin administration, presence or absence of renal or hepatic disease, underlying disorders, and concurrent administration of other drugs. Hypoacusis appeared with dosages equal to or higher than 4 g/d in patients with a mean age of 52.5 +/- 19 years, a high percentage of whom (45 percent) presented with renal impairment. The hearing loss was reversible in all cases, and subsided a few days (median = 3) after dosage reduction or drug discontinuation. DISCUSSION Our patients' characteristics are similar to those of patients reported in the literature. Most data indicate that erythromycin-induced hypoacusis is a dose-dependent effect; however, its occurrence in patients otherwise free from disposing factors suggests that it is idiosyncratic. CONCLUSIONS Erythromycin administered for appropriate indications and dosage adjustments in patients with impaired renal and/or liver function may prevent or reduce the incidence of erythromycin-induced hypoacusis.
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Bartolami S, Planche M, Pujol R. Inhibition of the carbachol-evoked synthesis of inositol phosphates by ototoxic drugs in the rat cochlea. Hear Res 1993; 67:203-10. [PMID: 8340273 DOI: 10.1016/0378-5955(93)90248-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
The ability of amikacin, neomycin, ethacrynate, mercuric chloride and cisplatin to alter the inositol phosphate (IP) signalling pathway was assessed in the 12-day-old rat cochlea, where the turnover of IPs is coupled to muscarinic receptors. This study was motivated by: (1) the demonstration of neomycin binding to phosphatidylinositol 4,5-biphosphate, the precursor of IPs, and (2) the fact that ototoxic drugs induce some common symptoms in outer hair cells. At concentrations below 1 mM, none of the compounds changed the control 3H-IP formation. Mercuric chloride, cisplatin and ethacrynate inhibited the carbachol-induced formation of IPs in a dose-dependent manner with IC50 values of 74,340 and 430 microM, respectively. The aminoglycosides were less efficient in reducing the carbachol-stimulated accumulation of IPs, since neither amikacin nor neomycin, both at 1 mM, had any significant effect. However, neomycin applied at 15 and 30 microM induced 29% and 43% of inhibition of the stimulated IP response. Finally, additive effects are obtained between some of the toxic drugs. The results suggest that a block of the IP transduction system, associated with the cholinergic efferent innervation of the organ of Corti, is a feature that may be involved in some types of ototoxicity. The inefficiency of aminoglycosides and the putative targets of the ototoxic agents are discussed.
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Affiliation(s)
- S Bartolami
- INSERM U 254, Université de Montpellier II, France
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Abstract
Although aminoglycosides are generally infused every 8 or 12 h, recent data suggest that administration of the total daily dose every 24 h may reduce the risk of oto- and nephrotoxicity and improve efficacy. Aminoglycosides kill bacteria in a dose-dependent manner (i.e. the higher the drug level, the more rapid and complete the bactericidal effect), and exert a post-antibiotic effect (delay in regrowth after the drug concentration falls below its minimum inhibitory concentration for the strain). Moreover, survivors after initial aminoglycoside exposure are temporarily relatively insensitive to the drug, so longer interdose intervals allow recovery of greater sensitivity. Thus, dosing to achieve higher peak drug levels less often would seem desirable. In several animal models of infection, greater efficacy and less oto- and nephrotoxicity have been associated with once daily dosing of aminoglycosides. Several clinical studies have indicated the importance of high peak serum aminoglycoside levels for efficacy. Limited studies of once daily dosing of these drugs in man have suggested that it is at least as favourable as conventional dosing. Nonetheless, despite the obvious advantages of cost and convenience and the theoretical and experimental indication that once daily dosing is advantageous, we need to test this concept in the clinical situation. Large prospective, randomized, double-blind, comparative studies of once daily and conventional dosing regimens in the treatment of various infections in different patient populations are required.
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Affiliation(s)
- L Nordström
- Department of Infectious Diseases, University of Lund, General Hospital, Malmö, Sweden
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Affiliation(s)
- M Y Huang
- Kresge Hearing Research Institute, Ann Arbor, MI
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