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Hearing ototoxicity

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https://www.readbyqxmd.com/read/29908183/mif-protects-against-oxygen-glucose-deprivation-induced-ototoxicity-in-hei-oc1-cochlear-cells-by-enhancement-of-akt-nrf2-ho-1-pathway
#1
Wen-Yan Zhu, Xin Jin, Yong-Chi Ma, Zhi-Biao Liu
Ischemia and oxidative stress play crucial roles in the pathophysiology of sudden sensorineural hearing loss (SSNHL). Macrophage migration inhibitory factor (MIF) is a pro-inflammatory cytokine and serves an important role in hearing function. The present study was designed to evaluate the effect of MIF on oxygen-glucose deprivation (OGD)-induced ototoxicity and to elucidate its molecular mechanism. In HEI-OC1 auditory cells, OGD reduced cell viability and increased supernatant lactate dehydrogenase (LDH) and MIF in a time-dependent manner...
June 13, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29899689/deficiency-of-duffy-antigen-receptor-for-chemokines-ameliorated-cochlear-damage-from-noise-exposure
#2
Bouchra Edderkaoui, Liana Sargsyan, Alisa Hetrick, Hongzhe Li
Cochlear inflammatory response to various environmental insults, including acoustic and ototoxic overexposures, has been increasingly become a topic of interest. As the immune response is associated with both pathology and protection, targeting specific components of the immune response is expected to dissect the relationships between cellular damage and inflammation-associated protection and repair in the cochlea. Duffy antigen receptor for chemokines (DARC) is a member of a group of atypical chemokine receptors, and essential for chemokine-regulated leukocyte/neutrophil trafficking during inflammation...
2018: Frontiers in Molecular Neuroscience
https://www.readbyqxmd.com/read/29889716/influence-of-24-diamino-5-phenylthiazole-on-neomycin-ototoxicity-in-cultured-organ-of-corti-explants
#3
Yuexia Li, Yunliang Wu, Hongmei Liu, Xiangxin Lou
Hair cells do not undergo spontaneous regeneration when they are damaged in the mammalian organ of Corti, leading to irreversible hearing loss. Previous studies have shown that 24-diamino-5-phenylthiazole (DAPT), an inhibitor of Notch signaling, plays a major role in inner ear development. However, whether DAPT influences antibiotic-induced hair cell damage remains uncertain. The present study aimed to investigate whether DAPT exerts protective or regenerative effects on neomycin-damaged hair cells. A histological analysis was carried out to assess the number and morphological changes of hair cells in cultured organ of Corti explants...
June 8, 2018: Neuroreport
https://www.readbyqxmd.com/read/29875633/meclofenamic-acid-reduces-reactive-oxygen-species-accumulation-and-apoptosis-inhibits-excessive-autophagy-and-protects-hair-cell-like-hei-oc1-cells-from-cisplatin-induced-damage
#4
He Li, Yongdong Song, Zuhong He, Xiaoyun Chen, Xianmin Wu, Xiaofei Li, Xiaohui Bai, Wenwen Liu, Boqin Li, Shanshan Wang, Yuechen Han, Lei Xu, Daogong Zhang, Jianfeng Li, Renjie Chai, Haibo Wang, Zhaomin Fan
Hearing loss is the most common sensory disorder in humans, and a significant number of cases is due to the ototoxicity of drugs such as cisplatin that cause hair cell (HC) damage. Thus, there is great interest in finding agents and mechanisms that protect HCs from ototoxic drug damage. It has been proposed that epigenetic modifications are related to inner ear development and play a significant role in HC protection and HC regeneration; however, whether the m6 A modification and the ethyl ester form of meclofenamic acid (MA2), which is a highly selective inhibitor of FTO (fatmass and obesity-associated enzyme, one of the primary human demethylases), can affect the process of HC apoptosis induced by ototoxic drugs remains largely unexplored...
2018: Frontiers in Cellular Neuroscience
https://www.readbyqxmd.com/read/29867751/acute-bilateral-superior-branch-vestibular-neuropathy
#5
Dario A Yacovino, John B Finlay, Valentina N Urbina Jaimes, Daniel H Verdecchia, Michael C Schubert
The rapid onset of a bilateral vestibular hypofunction (BVH) is often attributed to vestibular ototoxicity. However, without any prior exposure to ototoxins, the idiopathic form of BVH is most common. Although sequential bilateral vestibular neuritis (VN) is described as a cause of BVH, clinical evidence for simultaneous and acute onset bilateral VN is unknown. We describe a patient with an acute onset of severe gait ataxia and oscillopsia with features compatible with acute BVH putatively due to a bilateral VN, which we serially evaluated with clinical and laboratory vestibular function testing over the course of 1 year...
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29866015/cycloserine-induced-suicidal-tendencies-and-kanamycin-induced-ototoxicity-in-indian-mdr-tb-patient-a-case-report
#6
Manjeet Singh Jangra, Manik Chhabra
INTRODUCTION: Cycloserine and Kanamycin are approved for treatment of multidrug-resistant tuberculosis with good tolerability in Tuberculosis patients and have various labeled adverse reactions but the neuropsychiatric adverse drug reactions with the cycloserine are rarely explained. METHODS: We present a case report on Cycloserine induced Suicidal tendencies and Kanamycin induced decrease in hearing sensation in Indian MDR-TB patient. CASE REPORT: A 55-year-old male patient who was diagnosed with MDR-TB was prescribed with category IV anti-tubercular therapy...
June 4, 2018: Current Drug Safety
https://www.readbyqxmd.com/read/29862952/increased-risk-of-aminoglycoside-induced-hearing-loss-in-mdr-tb-patients-with-hiv-coinfection
#7
H Hong, C Budhathoki, J E Farley
SETTING: A high proportion of individuals with multidrug-resistant tuberculosis (MDR-TB) develop permanent hearing loss due to ototoxicity caused by injectable aminoglycosides (AGs). The prevalence of AG-induced hearing loss is greatest in tuberculosis (TB) and human immunodeficiency virus (HIV) endemic countries in sub-Saharan Africa. However, whether HIV coinfection is associated with a higher incidence of AG-induced hearing loss during MDR-TB treatment is controversial. OBJECTIVE: To evaluate the impact of HIV coinfection on AG-induced hearing loss among individuals with MDR-TB in sub-Saharan Africa...
June 1, 2018: International Journal of Tuberculosis and Lung Disease
https://www.readbyqxmd.com/read/29862415/resistance-to-neomycin-ototoxicity-in-the-extreme-basal-hook-region-of-the-mouse-cochlea
#8
Shelly C Y Lin, Peter R Thorne, Gary D Housley, Srdjan M Vlajkovic
Aminoglycoside ototoxicity results in permanent loss of the sensory hair cells in the mammalian cochlea. It usually begins at the basal turn causing high-frequency hearing loss. Here we describe previously unreported resistance of hair cells to neomycin ototoxicity in the extreme basal (hook) region of the developing cochlea of the C57BL/6 mouse. Organ of Corti explants from mice at postnatal day 3 were incubated (37 °C, 5% CO2 ) in normal culture medium for 19.5 h prior to and after exposure to neomycin (1 mM, 3 h)...
June 4, 2018: Histochemistry and Cell Biology
https://www.readbyqxmd.com/read/29798299/-etiology-analysis-and-vestibular-assessment-of-bilateral-vestibular-vestibulopathy
#9
Y Lin, L X Gao, L Li, J L Wang, J J Shen, F Sun, J H Qiu, D J Zha
Objective: To define clinical and laboratory characteristics of bilateral vestibulopathy(BVP) and to propose diagnostic criteria of this disorder based on clinical and laboratory vestibular function test findings. Method: Forty-two case series with a clinical suspicion of BVP were retrospectively analyzed, in an attempt to determine etiology. Presenting auditory-vestibular symptoms, bedside dynamic visual acuity tests and laboratory test were reviewed, including bithermal caloric test, rotatory chair tests, video head impulse test (vHIT), vestibular-evoked myogenic potentials (VEMP)...
March 2018: Journal of Clinical Otorhinolaryngology, Head, and Neck Surgery
https://www.readbyqxmd.com/read/29798293/-experimental-observation-on-the-effect-of-bone-marrow-mesenchymal-stem-cells-transplanting-cxcr4-over-gentamicin-ototoxicity
#10
S P Huang, X Y Wang, C Fang, X Y Wang, Q Wu
Objective: To observe the survival and migration ability of CXCR4-BMSCs in guinea pig cochlea with gentamycin induced sensorineural hearing loss, and to explore whether SDF-1/CXCR4 axis can mediate bone marrow mesenchymal stem cells (BMSCs) to cochlear homing. Method: BMSCs were isolated and extracted from guinea pigs. A bone marrow mesenchymal stem cell line with overexpression of CXCR4 was established. The animal model of sensorineural deafness was established by intraperitoneal injection of gentamicin[100 mg/(kg·d)]in 50 healthy guinea pigs...
March 2018: Journal of Clinical Otorhinolaryngology, Head, and Neck Surgery
https://www.readbyqxmd.com/read/29791559/sequential-analysis-as-a-tool-for-detection-of-amikacin-ototoxicity-in-the-treatment-of-multidrug-resistant-tuberculosis
#11
Karla Anacleto de Vasconcelos, Silvana Maria Monte Coelho Frota, Antonio Ruffino-Netto, Afrânio Lineu Kritski
OBJECTIVE: To investigate early detection of amikacin-induced ototoxicity in a population treated for multidrug-resistant tuberculosis (MDR-TB), by means of three different tests: pure-tone audiometry (PTA); high-frequency audiometry (HFA); and distortion-product otoacoustic emission (DPOAE) testing. METHODS: This was a longitudinal prospective cohort study involving patients aged 18-69 years with a diagnosis of MDR-TB who had to receive amikacin for six months as part of their antituberculosis drug regimen for the first time...
April 2018: Jornal Brasileiro de Pneumologia: Publicaça̋o Oficial da Sociedade Brasileira de Pneumologia e Tisilogia
https://www.readbyqxmd.com/read/29779419/an-evaluation-of-hearing-in-infants-administered-with-colistin-in-the-premature-neonatal-intensive-care-unit
#12
Selman Sarıca, Sadık Yurttutan
AIM: The aim of this study was to investigate the effects of colistin on hearing by evaluating the otoacoustic emission tests and clinical auditory brainstem responses in preterm infants treated with colistin in the neonatal intensive care unit. METHOD: The study included 30 neonates (male: n = 16, female: n = 14) born before 37 weeks who were admitted to the Neonatal Intensive Care Unit at the Kahramanmaras Sutcu Imam Medical Faculty between January 2014 and January 2015 and who were treated with colistin during their time in intensive care because of infection...
May 20, 2018: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/29778098/hydrochlorothiazide-and-risk-of-hearing-disorder-a-case-series
#13
Natnael Belai, Selamawit Gebrehiwet, Yodit Fitsum, Mulugeta Russom
BACKGROUND: Hydrochlorothiazide is not known to cause hearing disorder. The Eritrean Pharmacovigilance Centre, however, has received cases of hearing disorder, including irreversible deafness, associated with hydrochlorothiazide. The aim of this study is, therefore, to assess the causal relationship between hydrochlorothiazide and hearing disorder. METHODS: Data was retrieved from the WHO global adverse drug reaction database, VigiBase™. A search on VigiBase™ was made on August 6, 2017 using "hydrochlorothiazide" as drug substance, and "ototoxicity", "decreased hearing", and "vestibular disorder" as reaction terms...
May 20, 2018: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/29770223/profound-hearing-loss-following-surgery-in-pediatric-patients-with-posterior-fossa-low-grade-glioma
#14
Yahya Ghazwani, Ibrahim Qaddoumi, Johnnie K Bass, Shengjie Wu, Jason Chiang, Frederick Boop, Amar Gajjar, Zsila Sadighi
Background: Hearing loss may occur in patients with posterior fossa low-grade glioma who undergo surgery. Methods: We retrospectively reviewed 217 patients with posterior fossa low-grade glioma, including 115 for whom results of hearing tests performed after surgery and before chemotherapy or radiation therapy were available. We explored the association of UHL with age at diagnosis, sex, race, tumor location, extent of resection, posterior fossa syndrome, ventriculoperitoneal shunt placement, and histology...
May 2018: Neuro-oncology Practice
https://www.readbyqxmd.com/read/29760588/in-vitro-gentamicin-exposure-alters-caveolae-protein-profile-in-cochlear-spiral-ligament-pericytes
#15
Elisa Ghelfi, Yohann Grondin, Emil J Millet, Adam Bartos, Magda Bortoni, Clara Oliveira Gomes Dos Santos, Humberto J Trevino-Villarreal, Rosalinda Sepulveda, Rick Rogers
Background: The aminoglycoside antibiotic gentamicin is an ototoxic drug and has been used experimentally to investigate cochlear damage induced by noise.We have investigated the changes in the protein profile associated with caveolae in gentamicin treated and untreated spiral ligament (SL) pericytes, specialized cells in the blood labyrinth barrier of the inner ear microvasculature. Pericytes from various microvascular beds express caveolae, protein and cholesterol rich microdomains, which can undergo endocytosis and transcytosis to transport small molecules in and out the cells...
2018: Proteome Science
https://www.readbyqxmd.com/read/29757919/prevalence-of-ototoxic-medication-use-among-older-adults-in-beaver-dam-wisconsin
#16
Yoonmee Joo, Karen J Cruickshanks, Barbara E K Klein, Ronald Klein, OiSaeng Hong, Margaret Wallhagen
BACKGROUND AND PURPOSE: Drug-related ototoxicity may exacerbate presbycusis (age-related hearing loss); yet, few data are available on the prevalence of ototoxic medication use by older adults. The purposes of this study were to assess the impact of aging and ototoxicity on hearing loss, the prevalence of ototoxic medication use, and select characteristics associated with ototoxic medication use among older adults. METHODS: Cross-sectional analyses were conducted using select variables extracted from the baseline and 10-year follow-up assessments of the two population-based epidemiological studies to compare two points in time...
January 2018: Journal of the American Association of Nurse Practitioners
https://www.readbyqxmd.com/read/29754876/bone-morphogenetic-protein-4-antagonizes-hair-cell-regeneration-in-the-avian-auditory-epithelium
#17
Rebecca M Lewis, Jesse J Keller, Liangcai Wan, Jennifer S Stone
Permanent hearing loss is often a result of damage to cochlear hair cells, which mammals are unable to regenerate. Non-mammalian vertebrates such as birds replace damaged hair cells and restore hearing function, but mechanisms controlling regeneration are not understood. The secreted protein bone morphogenetic protein 4 (BMP4) regulates inner ear morphogenesis and hair cell development. To investigate mechanisms controlling hair cell regeneration in birds, we examined expression and function of BMP4 in the auditory epithelia (basilar papillae) of chickens of either sex after hair cell destruction by ototoxic antibiotics...
May 2, 2018: Hearing Research
https://www.readbyqxmd.com/read/29734694/hearing-loss-in-adult-survivors-of-childhood-cancer-treated-with-radiotherapy
#18
Amber Khan, Amy Budnick, Dana Barnea, Darren R Feldman, Kevin C Oeffinger, Emily S Tonorezos
The ototoxic effects of radiotherapy have been poorly characterized. We examined adult survivors of childhood cancer who were treated with radiotherapy, which included the head, before the age of 22 years and between 1952 and 2016. Those who received platinum chemotherapy were excluded. Demographic, diagnosis, and treatment outcomes were captured. Audiograms were graded using the Chang and International Society of Paediatric Oncology ototoxicity (SIOP) scales. Among 276 patients with a history of radiation to sites that included the brain, orbit, nasopharynx, and total body irradiation, the median age at treatment was 10...
May 4, 2018: Children
https://www.readbyqxmd.com/read/29697646/-the-hearing-function-in-the-premature-children-following-their-treatment-with-the-use-of-ototoxic-antibiotics
#19
I N D'yakonova, I V Rakhmanova, Yu S Ishanova, D S Burmistrova
The objective of the present study was the evaluation of the state of the auditory function in the premature children during the first year of life who underwent the neonatal treatment with various ototoxic antibiotics. A total of 232 newborn infants were available for the examination by the methods designed for recording distortion product optoacoustic emission (DPOAE) and short-latency auditory evoked potentials (SAEPs). The 'Statgraphics Centurion XV' program was used for the statistical treatment of the data obtained in the study...
2018: Vestnik Otorinolaringologii
https://www.readbyqxmd.com/read/29689410/optimized-phospholipid-based-nanoparticles-for-inner-ear-drug-delivery-and-therapy
#20
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...
July 2018: Biomaterials
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