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Hearing ototoxicity

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https://www.readbyqxmd.com/read/29689410/optimized-phospholipid-based-nanoparticles-for-inner-ear-drug-delivery-and-therapy
#1
Keum-Jin Yang, Jihwan Son, So Young Jung, Gawon Yi, Jihye Yoo, Dong-Kee Kim, Heebeom Koo
To develop efficient carriers for inner ear drug delivery, we prepared four kinds of phospholipid-based nanoparticles: neutral, anionic, cationic, and cationic-PEG (polyethyleneglycol) particles. PEG was used to maintain long-term particle circulation in the perilymph, avoiding non-specific binding of particles to proteins. All four nanoparticles were about 200 nm in diameter, and their zeta potentials were -4.32, -26.0, +25.8, and -0.28, respectively, for neutral, anionic, cationic, and cationic-PEG nanoparticles...
April 16, 2018: Biomaterials
https://www.readbyqxmd.com/read/29688112/protection-for-medication-induced-hearing-loss-the-state-of-the-science
#2
Tanisha L Hammill, Kathleen C Campbell
OBJECTIVE: This review will summarise the current state of development of pharmaceutical interventions (prevention or treatment) for medication-induced ototoxicity. DESIGN: Currently published literature was reviewed using PubMed and ClinicalTrials.gov to summarise the current state of the science. Details on the stage of development in the market pipeline are provided, along with evidence for clinical safety and efficacy reported. STUDY SAMPLE: This review includes reports from 44 articles and clinical trial reports regarding agents in clinical or preclinical trials, having reached approved Investigational New Drug status with the Federal Drug Administration...
April 24, 2018: International Journal of Audiology
https://www.readbyqxmd.com/read/29687008/secondary-degeneration-of-auditory-neurons-after-topical-aminoglycoside-administration-in-a-gerbil-model
#3
Jae-Hun Lee, Min Young Lee, Phil-Sang Chung, Jae Yun Jung
Hair cells in the cochlea can be damaged by various causes. Damaged hair cells can lead to additional destruction of parts of the auditory afferent pathway sequentially, which is called secondary degeneration. Recently, researches regarding cochlear implants have been actively carried out for clinical purposes; secondary degeneration in animals is a much more practical model for identifying the prognosis of cochlear implants. However, an appropriate model for this research is not established yet. Thus, we developed a secondary degeneration model using an ototoxic drug...
2018: BioMed Research International
https://www.readbyqxmd.com/read/29676584/current-practice-of-ototoxicity-management-across-the-united-kingdom-uk
#4
Devina Maru, Ghada-Al Malky
OBJECTIVE: Effective management of patients diagnosed with ototoxicity is needed to reduce hearing and balance damage which affects communication and life quality. Despite widespread recommendations to monitor and manage ototoxicity in an early and effective manner, there is limited evidence to support the actual implementation of these recommendations for affected patient groups in healthcare services across the UK with limited publications available. In this study, an online questionnaire analysed the current practice of ototoxicity management and patient pathways across the UK once the diagnosis of ototoxicity was confirmed, targeting Audiologists, ENTs/AVPs and GPs...
April 20, 2018: International Journal of Audiology
https://www.readbyqxmd.com/read/29670475/investigation-the-relationship-between-skin-involvement-severity-and-hearing-loss-severity-in-vitiligo-patients
#5
Ahmad Yeganeh Moghaddam, Mansour Sayyah, Elham Alian Fini, Rezvan Talaee
Introduction: Vitiligo is a common acquired depigmented systemic disorder influencing the entire pigmentary system including Cochlear melanocytes and vestibular system in the inner ear. Vitiligo can leads to social negative impact and poorer quality of life among these patients. This study was conducted to investigate the relationship between skin involvement severity and hearing loss severity among vitiligo patients. Methods: This cross-sectional study was performed on 98 patients with vitiligo referred to the dermatology clinic of Shahid Beheshti Hospital of Kashan during 2012-2014...
March 2018: Materia Socio-medica
https://www.readbyqxmd.com/read/29665656/forskolin-protects-against-cisplatin-induced-ototoxicity-by-inhibiting-apoptosis-and-ros-production
#6
Xiangrui Guo, Xiaohui Bai, Li Li, Jianfeng Li, Haibo Wang
Cisplatin is widely used in the treatment of various types of cancer. However, it could cause severe side effects such as ototoxicity, which greatly limit the clinical application of cisplatin. Forskolin (FSK) is a diterpene derived from the plant Coleus forskohlii, and has been proven an effective drug for cardiovascular disease, diabetes, and asthma because of its anti-oxidant and anti-inflammatory action. Here, we investigated the effects of FSK in cisplatin-induced ototoxicity, and we found that FSK could significantly protect against cisplatin-induced ototoxicity in both cell line and isolated mouse cochlear...
March 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29662441/characterization-of-hair-cell-like-cells-converted-from-supporting-cells-after-notch-inhibition-in-cultures-of-the-organ-of-corti-from-neonatal-gerbils
#7
Yi Li, Shuping Jia, Huizhan Liu, Tomoko Tateya, Weiwei Guo, Shiming Yang, Kirk W Beisel, David Z Z He
The senses of hearing and balance depend upon hair cells, the sensory receptors of the inner ear. Hair cells transduce mechanical stimuli into electrical activity. Loss of hair cells as a result of aging or exposure to noise and ototoxic drugs is the major cause of noncongenital hearing and balance deficits. In the ear of non-mammals, lost hair cells can spontaneously be replaced by production of new hair cells from conversion of supporting cells. Although supporting cells in adult mammals have lost that capability, neonatal supporting cells are able to convert to hair cells after inhibition of Notch signaling...
2018: Frontiers in Cellular Neuroscience
https://www.readbyqxmd.com/read/29615272/mitochondrial-mutations-associated-with-hearing-and-balance-disorders
#8
REVIEW
Iman Ibrahim, Mev Dominguez-Valentin, Bernard Segal, Anthony Zeitouni, Sabrina Daniela da Silva
Hearing and balance disorders are related to the inner ear and are among the major cause of falls in older adults. Hearing loss that commonly occurs with aging (aka presbyacusis) can result from noise exposure, smoking, ototoxic drugs and genetic factors such as mutations in nuclear and mitochondrial genes. Mutations in mitochondrial DNA (mtDNA) have been reported to play an important role in cell function by providing energy, as well as, cell death (apoptosis). This study aims to systematically review mitochondrial mutations associated with presbyacusis and suggests preventive measurements to improve the quality of life in older adults...
March 10, 2018: Mutation Research
https://www.readbyqxmd.com/read/29609517/pd-1-inhibition-minimally-affects-cisplatin-induced-toxicities-in-a-murine-model
#9
Katie Spielbauer, Lisa Cunningham, Nicole Schmitt
Immune checkpoint inhibition used in combination with standard cisplatin-based chemotherapy regimens is currently under evaluation in clinical trials for head and neck squamous cell carcinoma (HNSCC). The impact of anti-PD-1 therapy on cisplatin-induced ototoxicity and nephrotoxicity has not been established. Here we use a murine model of cisplatin-induced hearing loss to investigate the impact of anti-PD-1 immunotherapy on auditory brainstem responses (ABRs), distortion product otoacoustic emissions (DPOAEs), serum creatinine, and hair cell and renal histology...
March 1, 2018: Otolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/29608150/trans-tympanic-drug-delivery-for-the-treatment-of-ototoxicity
#10
Kelly Sheehan, Sandeep Sheth, Debashree Mukherjea, Leonard P Rybak, Vickram Ramkumar
The systemic administration of protective agents to treat drug-induced ototoxicity is limited by the possibility that these protective agents could interfere with the chemotherapeutic efficacy of the primary drugs. This is especially true for the drug cisplatin, whose anticancer actions are attenuated by antioxidants which provide adequate protection against hearing loss. Other current or potential otoprotective agents could pose a similar problem, if administered systemically. The application of various biologicals or protective agents directly to the cochlea would allow for high levels of these agents locally with limited systemic side effects...
March 16, 2018: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29595337/mitochondria-homing-peptide-functionalized-nanoparticles-performing-dual-extracellular-intracellular-roles-to-inhibit-aminoglycosides-induced-ototoxicity
#11
Shuang Zhou, Yanhui Sun, Xiao Kuang, Shanshan Hou, Zhenjie Wang, Zhe Qian, Hongzhuo Liu
One of the major challenges in the treatment of hearing loss is the low efficacy of therapeutic candidates. To achieve the optimum drug efficacy, we designed a novel peptide (D-Arg-Dmt-Arg-Phe-NH2 )-mediated mitochondrial targeted delivery nanosystem for a promising candidate, geranylgeranylacetone (GGA). The zebrafish lateral line system, a robust model for mammalian hair cells, was used to identify the efficacy against gentamicin, a well-known ototoxic agent. The nanosystem facilitated lysosomal escape and mitochondrial accumulation, and thus conferred superior protective efficacy against a wide range of gentamicin compared with unmodified NPs and free drugs...
March 29, 2018: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/29575954/ototoxicity-the-radical-drum-beat-and-rhythm-of-cochlear-hair-cell-life-and-death
#12
David V Gauvin, Joshua Yoder, Zachary J Zimmermann, Rachel Tapp
The function and structure of the auditory information processing system establishes a unique sensory environment for the "perfect storm." The battle between life and death pits the cascade of an apoptotic storm, programmed cell death cascades, against simple cell death (necrosis) pathways. Live or die, the free radical biology of oxygen and hydroxylation, and the destruction of transition metal migration through the mechanical gate sensory processes of the hair cell lead to direct access to the cytoplasm, cytoplasmic reticulum, and mitochondria of the inner workings of the hair cells...
January 1, 2018: International Journal of Toxicology
https://www.readbyqxmd.com/read/29571735/regional-up-regulation-of-nox2-contributes-to-the-differential-vulnerability-of-outer-hair-cells-to-neomycin
#13
Meihao Qi, Yang Qiu, Xueying Zhou, Keyong Tian, Ke Zhou, Fei Sun, Bo Yue, Fuquan Chen, Dingjun Zha, Jianhua Qiu
In hearing loss induced by aminoglycoside antibiotics, the outer hair cells (OHCs) in the basal turn are always more susceptible than OHCs in the apical turn, while the underlying mechanisms remain unknown. In this study, we reported that NAPDH oxidase 2 (NOX2) played an important role in the OHCs damage preferentially in the basal turn. Normally, NOX2 was evenly expressed in OHCs among different turns, at a relatively low level. However, after neomycin treatment, NOX2 was dominantly induced in OHCs in the basal turn...
March 20, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29549688/identification-of-risk-factors-for-hearing-impairment-in-newborns-a-hospital-based-study
#14
Nermin Hrnčić
Aim To identify risk factors for hearing impairment presented in neonates born in Cantonal Hospital Zenica (CHZ) and to estimate their influence on outcome of hearing tests in Newborn Hearing Screening (NHS). Methods Retrospective-prospective study was done at the Department of Gynaecology and Maternity. The NHS was performed with transitory evoked otoacoustic emissions (TEOAE) during a six-month period using "Titan" device (Interacoustics, Denmark). The questionnaire was written for the purpose of getting more structured basic information about every newborn and to identify risk factors for hearing impairment...
February 1, 2018: Medicinski Glasnik
https://www.readbyqxmd.com/read/29519695/otoacoustic-emissions-in-children-treated-with-gentamicin-in-a-secondary-hospital
#15
Jose Miguel Sequi Canet, Carlos Miguel Angelats Romero, Jose Miguel Sequi Sabater, Ana Miralles Torres, Miguel Boronat Garcia, Marta Gomez Delgado
INTRODUCTION: The National Commission for the Early Detection of Hearing Loss (CODEPEH) recommends the re-evaluation of hearing in children who have suffered any potentially harmful event, such as the prescription of ototoxic antibiotics such as gentamicin. The evoked otoacoustic emissions (EOAE) are a good method for assessing the integrity of cochlear functionality. MATERIAL AND METHOD: A prospective study is presented, including 92 children who were treated with intravenous gentamicin for septic risk/sepsis or urinary tract infection...
March 5, 2018: Acta Otorrinolaringológica Española
https://www.readbyqxmd.com/read/29513752/anti-cancer-characteristics-and-ototoxicity-of-platinum-ii-amine-complexes-with-only-one-leaving-ligand
#16
Jerry D Monroe, Heidi L Hruska, Hannah K Ruggles, Kevin M Williams, Michael E Smith
Unlike cisplatin, which forms bifunctional DNA adducts, monofunctional platinum(II) complexes bind only one strand of DNA and might target cancer without causing auditory side-effects associated with cisplatin treatment. We synthesized the monofunctional triamine-ligated platinum(II) complexes, Pt(diethylenetriamine)Cl, [Pt(dien)Cl]+, and Pt(N,N-diethyldiethylenetriamine)Cl, [Pt(Et2dien)Cl]+, and the monofunctional heterocyclic-ligated platinum(II) complexes, pyriplatin and phenanthriplatin, and compared their 5'-GMP binding rates, cellular compartmental distribution and cellular viability effects...
2018: PloS One
https://www.readbyqxmd.com/read/29513056/l-n-acetylcysteine-protects-outer-hair-cells-against-tnf%C3%AE-initiated-ototoxicity-in-vitro
#17
Joshua A Tillinger, Chhavi Gupta, Kadri Ila, Jamal Ahmed, Jeenu Mittal, Thomas R Van De Water, Adrien A Eshraghi
OBJECTIVE: The present study is aimed at determining the efficacy and exploring the mechanisms by which l-N-acetylcysteine (l-NAC) provides protection against tumor necrosis factor-alpha (TNFα)-induced oxidative stress damage and hair cell loss in 3-day-old rat organ of Corti (OC) explants. Previous work has demonstrated a high level of oxidative stress in TNFα-challenged OC explants. TNFα can potentially play a significant role in hair cell loss following an insult to the inner ear...
March 7, 2018: Acta Oto-laryngologica
https://www.readbyqxmd.com/read/29501366/concurrent-chemoradiotherapy-with-nedaplatin-versus-cisplatin-in-stage-ii-ivb-nasopharyngeal-carcinoma-an-open-label-non-inferiority-randomised-phase-3-trial
#18
Lin-Quan Tang, Dong-Ping Chen, Ling Guo, Hao-Yuan Mo, Ying Huang, Shan-Shan Guo, Bin Qi, Qing-Nan Tang, Pan Wang, Xiao-Yun Li, Ji-Bin Li, Qing Liu, Yuan-Hong Gao, Fang-Yun Xie, Li-Ting Liu, Yang Li, Sai-Lan Liu, Hao-Jun Xie, Yu-Jing Liang, Xue-Song Sun, Jin-Jie Yan, Yi-Shan Wu, Dong-Hua Luo, Pei-Yu Huang, Yan-Qun Xiang, Rui Sun, Ming-Yuan Chen, Xing Lv, Lin Wang, Wei-Xiong Xia, Chong Zhao, Ka-Jia Cao, Chao-Nan Qian, Xiang Guo, Ming-Huang Hong, Zhi-Qiang Nie, Qiu-Yan Chen, Hai-Qiang Mai
BACKGROUND: Cisplatin-based concurrent chemoradiotherapy is currently considered to be the standard treatment regimen for patients with advanced nasopharyngeal carcinoma, but has well known side-effects such as gastrointestinal reactions, nephrotoxicity, and ototoxicity. Nedaplatin was developed to decrease the toxic effects induced by cisplatin, and in this trial we assessed whether a nedaplatin-based concurrent chemoradiotherapy regimen was non-inferior to a cisplatin-based regimen in patients with locoregional, stage II-IVB nasopharyngeal carcinoma...
February 28, 2018: Lancet Oncology
https://www.readbyqxmd.com/read/29501316/long-term-platinum-induced-ototoxicity-in-pediatric-patients
#19
Sofia Waissbluth, Angela Chuang, Álvaro Del Valle, Marcela Cordova
OBJECTIVES: Platinum-based chemotherapy treatments are effective against a variety of pediatric malignancies. However, its use can lead to permanent hearing loss. The aim of this study was to evaluate the long-term effect of platinum chemotherapy on hearing and evaluate its progression. METHODS: Prospective cohort study. All records of pediatric patients receiving platinum-based chemotherapy between 2001 and 2006 were reviewed. Demographics and audiograms performed before, during, and following chemotherapy were analyzed...
April 2018: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/29490694/systematic-review-of-ototoxic-pre-surgical-antiseptic-preparations-what-is-the-evidence
#20
REVIEW
Shubhi Singh, Brian Blakley
OBJECTIVE: There is uncertainty regarding the safety of surgical antiseptic preparations in the ear. A systematic review of the literature was conducted to assess the evidence regarding ototoxicity of surgical antiseptic preparations. METHODS: A literature search was conducted using the PRISMA methods. Key words included "ototoxicity" "hearing loss", "antiseptic", "surgical preparation", "tympanoplasty", "vestibular dysfunction", "chlorhexidine", "iodine", "povidone", "ethanol", and "hydrogen peroxide" using Medline, Embase, Cochrane Library, Scopus and Web of Science...
March 1, 2018: Journal of Otolaryngology—Head & Neck Surgery
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