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Noise induced hearing loss

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https://www.readbyqxmd.com/read/28102197/a-novel-dominant-gjb2-dfna3-mutation-in-a-chinese-family
#1
Hongyang Wang, Kaiwen Wu, Lan Yu, Linyi Xie, Wenping Xiong, Dayong Wang, Jing Guan, Qiuju Wang
To decipher the phenotype and genotype of a Chinese family with autosomal dominant non-syndromic hearing loss (ADNSHL) and a novel dominant missense mutation in the GJB2 gene (DFNA3), mutation screening of GJB2 was performed on the propositus from a five-generation ADNSHL family through polymerase chain reaction amplification and Sanger sequencing. The candidate variation and the co-segregation of the phenotype were verified in all ascertained family members. Targeted genes capture and next-generation sequencing (NGS) were performed to explore additional genetic variations...
January 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28094540/examining-mechanisms-underlying-fear-control-in-the-extended-parallel-process-model
#2
Brian L Quick, Nicole R LaVoie, Tobias Reynolds-Tylus, Andrea Martinez-Gonzalez, Chris Skurka
This investigation sought to advance the extended parallel process model in important ways by testing associations among the strengths of efficacy and threat appeals with fear as well as two outcomes of fear-control processing, psychological reactance and message minimization. Within the context of print ads admonishing against noise-induced hearing loss (NIHL) and the fictitious Trepidosis virus, partial support was found for the additive model with no support for the multiplicative model. High efficacy appeals mitigated freedom threat perceptions across both contexts...
January 17, 2017: Health Communication
https://www.readbyqxmd.com/read/28077280/engineering-out-the-noise
#3
Kurt Yankaskas, Raymond Fischer, Jesse Spence, Jeff Komrower
The US Navy, through an Office of Naval Research (ONR) lead effort on Noise Induced Hearing Loss (NIHL), is investigating methods and techniques to mitigate hearing loss for the crews and warfighters. Hearing protection is a viable and increasingly popular method of reducing hearing exposure for many ship crewmembers; however, it has limitations on comfort and low frequency effectiveness. Furthermore, Personal Hearing Protection (PHP) is often used improperly. Proper vessel planning, programmatic changes and advances in noise control engineering can also have significant impacts by inherently reducing noise exposure through ship design and use of noise control treatments...
January 7, 2017: Hearing Research
https://www.readbyqxmd.com/read/28056268/-investigation-into-the-relationship-between-mitochondrial-12-s-rrna-gene-trna-gene-and-cytochrome-oxidase-%C3%A2-gene-variations-and-the-risk-of-noise-induced-hearing-loss
#4
J Jiao, G Z Gu, G S Chen, Y H Li, H L Zhang, Q Y Yang, X R Xu, W H Zhou, H Wu, L H He, Y X Zheng, S F Yu
Objective: To explore the relationship between mitochondrial 12 S rRNA gene variation, tRNA gene variation and cytochrome oxidase Ⅱ gene point mutations and the risk of noise-induced hearing loss (NIHL). Methods: A nested case-control study was performed that followed a cohort of 7 445 noise-exposed workers in a steel factory in Henan province, China, from January 1, 2006 to December 31, 2015. Subjects whose average hearing threshold was more than 40 dB(A) in high frequency were defined as the case group, and subjects whose average hearing threshold was less than 35 dB(A) in high frequency and less than 25 dB (A) in speech frequency were defined as the control group...
January 6, 2017: Zhonghua Yu Fang Yi Xue za Zhi [Chinese Journal of Preventive Medicine]
https://www.readbyqxmd.com/read/28056267/-association-between-eye-absent-homolog-4-gene-polymorphisms-and-occupational-noise-induced-hearing-loss
#5
Q Y Yang, X R Xu, J Jiao, Y X Zheng, L H He, S F Yu, G Z Gu, G S Chen, W H Zhou, H Wu, Y H Li, H L Zhang, Z R Zhang
Objective: To identify the association between genetic polymorphisms in the eye absent homolog 4 (EYA4) gene and noise-induced hearing loss (NIHL). Method: A nested case control study was conducted based on a cohort of noise-exposed subjects. In total, 292 cases were selected from a steel factory from 6 297 subjects during Jan 1, 2006 to Dec 12, 2015,who had an average hearing threshold of more than 40 dB(A); 584 matched control subjects for each case were designated on the basis of matched criteria including same gender, age (±5 years) and duration of exposure to noise (±2 years)...
January 6, 2017: Zhonghua Yu Fang Yi Xue za Zhi [Chinese Journal of Preventive Medicine]
https://www.readbyqxmd.com/read/28056266/-association-between-variations-in-protocadherin-15-gene-and-occupational-noise-induced-hearing-loss
#6
X R Xu, Q Y Yang, J Jiao, Y X Zheng, L H He, S F Yu, G Z Gu, G S Chen, W H Zhou, H Wu, Y H Li, H L Zhang, Z R Zhang
Objective: The aim of this study was to investigate whether genetic variability in the protocadherin 15 (PCDH15) gene may correspond with increased susceptibility to noise-induced hearing loss (NIHL) in a Chinese population. Methods: A nested case-control study was performed that followed a cohort of 7 445 noise-exposed workers in a steel factory of Henan province in China from January 1, 2006 to December 31, 2015. In this study, 394 cases who had an average hearing threshold of more than 40 dB (A) in high frequency were defined as the case group, and 721 controls who had an average hearing threshold of less than 35 dB (A) in high frequency and less than 25 dB (A) in speech frequency were defined as the control group...
January 6, 2017: Zhonghua Yu Fang Yi Xue za Zhi [Chinese Journal of Preventive Medicine]
https://www.readbyqxmd.com/read/28056265/-a-cohort-study-on-occupational-noise-induced-hearing-loss-in-workers-at-an-iron-and-steel-plant
#7
S F Yu, G S Chen, J Jiao, G Z Gu, H L Zhang, X M Wang, W H Zhou, H Wu, Y H Li, Y X Zheng
Objective: To analyze the incidence rate of occupational noise-induced hearing loss in noise-exposed workers in an iron and steel plant from 2006 to 2015. Methods: Using a cohort study method, workers exposed to occupational noise from Jan 1, 2006 to Dec 12, 2015 were followed up and the pure tone hearing test was conducted. In total, 6 297 subjects completed two or more physical checks and the pure tone hearing test and were included in the analysis. The noise exposure level at the workplace and the equivalent continuous A-weighted sound pressure level for workers was monitored and the cumulative noise exposure dose was evaluated...
January 6, 2017: Zhonghua Yu Fang Yi Xue za Zhi [Chinese Journal of Preventive Medicine]
https://www.readbyqxmd.com/read/28056262/-explore-the-road-to-the-precision-prevention-of-noise-induced-hearing-loss
#8
S F Yu, Y X Zheng
No abstract text is available yet for this article.
January 6, 2017: Zhonghua Yu Fang Yi Xue za Zhi [Chinese Journal of Preventive Medicine]
https://www.readbyqxmd.com/read/28056138/economic-impact-of-hearing-loss-and-reduction-of-noise-induced-hearing-loss-in-the-united-states
#9
Richard L Neitzel, Tracy K Swinburn, Monica S Hammer, Daniel Eisenberg
Purpose: Hearing loss (HL) is pervasive and debilitating, and noise-induced HL is preventable by reducing environmental noise. Lack of economic analyses of HL impacts means that prevention and treatment remain a low priority for public health and environmental investment. Method: This article estimates the costs of HL on productivity by building on established estimates for HL prevalence and wage and employment differentials between those with and without HL. Results: We estimate that HL affects more than 13% of the working population...
January 1, 2017: Journal of Speech, Language, and Hearing Research: JSLHR
https://www.readbyqxmd.com/read/28054909/noise-exposure-questionnaire-a-tool-for-quantifying-annual-noise-exposure
#10
Tiffany A Johnson, Susan Cooper, Greta C Stamper, Mark Chertoff
BACKGROUND: Exposure to both occupational and nonoccupational noise is recognized as a risk factor for noise-induced hearing loss (NIHL). Although audiologists routinely inquire regarding history of noise exposure, there are limited tools available for quantifying this history or for identifying those individuals who are at highest risk for NIHL. Identifying those at highest risk would allow hearing conservation activities to be focused on those individuals. PURPOSE: To develop a detailed, task-based questionnaire for quantifying an individual's annual noise exposure (ANE) arising from both occupational and nonoccupational sources (aim 1) and to develop a short screening tool that could be used to identify individuals at high risk of NIHL (aim 2)...
January 2017: Journal of the American Academy of Audiology
https://www.readbyqxmd.com/read/28045804/prevalence-of-hazardous-occupational-noise-exposure-hearing-loss-and-hearing-protection-usage-among-a-representative-sample-of-working-canadians
#11
Katya Feder, David Michaud, James McNamee, Elizabeth Fitzpatrick, Hugh Davies, Tony Leroux
OBJECTIVE: The aim of this study was to estimate the prevalence of hearing loss (HL), self-reported occupational noise exposure, and hearing protection usage among Canadians. METHODS: In-person household interviews were conducted with 3666 participants, aged 16 to 79 years (1811 males) with 94% completing audiometry and distortion-product otoacoustic emission (DPOAE) evaluations. Occupational noise exposure was defined as hazardous when communicating with coworkers at an arm's length distance required speaking in a raised voice...
January 2017: Journal of Occupational and Environmental Medicine
https://www.readbyqxmd.com/read/28034618/adenosine-receptors-regulate-susceptibility-to-noise-induced-neural-injury-in-the-mouse-cochlea-and-hearing-loss
#12
Srdjan M Vlajkovic, Kaushi Ambepitiya, Meagan Barclay, Detlev Boison, Gary D Housley, Peter R Thorne
Our previous studies have shown that the stimulation of A1 adenosine receptors in the inner ear can mitigate the loss of sensory hair cells and hearing loss caused by exposure to traumatic noise. Here, we focus on the role of adenosine receptors (AR) in the development of noise-induced neural injury in the cochlea using A1AR and A2AAR null mice (A1AR(-/-) and A2AAR(-/-)). Wildtype (WT) and AR deficient mice were exposed to octave band noise (8-16 kHz, 100 dB SPL) for 2 hours to induce cochlear injury and hearing loss...
December 26, 2016: Hearing Research
https://www.readbyqxmd.com/read/28034617/cochlear-hair-cell-regeneration-after-noise-induced-hearing-loss-does-regeneration-follow-development
#13
REVIEW
Fei Zheng, Jian Zuo
Noise-induced hearing loss (NIHL) affects a large number of military personnel and civilians. Regenerating inner-ear cochlear hair cells (HCs) is a promising strategy to restore hearing after NIHL. In this review, we first summarize recent transcriptome profile analysis of zebrafish lateral lines and chick utricles where spontaneous HC regeneration occurs after HC damage. We then discuss recent studies in other mammalian regenerative systems such as pancreas, heart and central nervous system. Both spontaneous and forced HC regeneration occurs in mammalian cochleae in vivo involving proliferation and direct lineage conversion...
December 26, 2016: Hearing Research
https://www.readbyqxmd.com/read/28007648/minocycline-attenuates-noise-induced-hearing-loss-in-rats
#14
Jing Zhang, Yong-Li Song, Ke-Yong Tian, Jian-Hua Qiu
Noise-induced hearing loss (NIHL) is a serious health concern and prevention of hair cell death or therapeutic intervention at the early stage of NIHL is critical to preserve hearing. Minocycline is a semi-synthetic derivative of tetracycline and has been shown to have otoprotective effects in ototoxic drug-induced hearing impairment, however, whether minocycline can protect against NIHL has not been investigated. The present study demonstrated elevated ABR (auditory brainstem response) thresholds and outer hair cell loss following traumatic noise exposure, which was mitigated by intraperitoneal administration of minocycline (45mg/kg/d) for 5 consecutive days...
December 19, 2016: Neuroscience Letters
https://www.readbyqxmd.com/read/28007526/noise-induced-cochlear-synaptopathy-past-findings-and-future-studies
#15
REVIEW
Megan Kobel, Colleen G Le Prell, Jennifer Liu, John W Hawks, Jianxin Bao
For decades, we have presumed the death of hair cells and spiral ganglion neurons are the main cause of hearing loss and difficulties understanding speech in noise, but new findings suggest synapse loss may be the key contributor. Specifically, recent preclinical studies suggest that the synapses between inner hair cells and spiral ganglion neurons with low spontaneous rates and high thresholds are the most vulnerable subcellular structures, with respect to insults during aging and noise exposure. This cochlear synaptopathy can be "hidden" because this synaptic loss can occur without permanent hearing threshold shifts...
December 19, 2016: Hearing Research
https://www.readbyqxmd.com/read/28002082/long-term-synergistic-interaction-of-cisplatin-and-noise-induced-hearing-losses
#16
J Riley DeBacker, Ryan T Harrison, Eric C Bielefeld
OBJECTIVE: Past experiments in the literature have shown that cisplatin interacts synergistically with noise to create hearing loss. Much of the previous work on the synergistic interaction of noise and cisplatin tested exposures that occurred very close together in time. The present study assessed whether rats that have been exposed to cisplatin continue to show increased susceptibility to noise-induced hearing loss months after conclusion of the cisplatin exposure. DESIGN: Thirty-two Fischer 344/NHsd rats were exposed to one of five conditions: (1) cisplatin exposure followed by immediate cochlear tissue harvest, (2) cisplatin exposure and a 20-week monitoring period before tissue harvest, (3) cisplatin exposure followed immediately by noise exposure, (4) cisplatin exposure followed by noise exposure 16 weeks later, and (5) noise exposure without cisplatin exposure...
December 19, 2016: Ear and Hearing
https://www.readbyqxmd.com/read/27991469/gender-differences-in-use-of-hearing-protection-devices-among-farm-operators
#17
Marjorie C McCullagh, Tanima Banerjee, James J Yang, Janice Bernick, Sonia Duffy, Richard Redman
PURPOSE: Although farm operators have frequent exposure to hazardous noise and high rates of noise-induced hearing loss, they have low use of hearing protection devices (HPDs). Women represent about one-third of farm operators, and their numbers are climbing. However, among published studies examining use of HPDs in this worker group, none have examined gender-related differences. The purpose of this study was to examine gender-related differences in use of hearing protection and related predictors among farm operators...
November 2016: Noise & Health
https://www.readbyqxmd.com/read/27991466/prevalence-of-tinnitus-and-noise-induced-hearing-loss-in-dentists
#18
Jamie Myers, Andrew B John, Suzanne Kimball, Terry Fruits
INTRODUCTION: The purpose of this study was to evaluate noise levels in dental offices and to estimate the risk and prevalence of tinnitus and noise-induced hearing loss (NIHL) in practicing dentists. MATERIALS AND METHODS: First, measures were collected of sound pressure levels produced by dental handpieces and dental suction in the University of Oklahoma Health Sciences Center (OUHSC) College of Dentistry. Second, a survey was distributed to members of the Oklahoma Dental Association (ODA)...
November 2016: Noise & Health
https://www.readbyqxmd.com/read/27991459/early-indication-of-noise-induced-hearing-loss-from-pmp-use-in-adolescents-a-cross-sectional-analysis
#19
Diana C Colon, Ulla Verdugo-Raab, Carmelo P Alvarez, Thomas Steffens, Steven C Marcrum, Stefanie Kolb, Caroline Herr, Dorothee Twardella
CONTEXT: Distortion product otoacoustic emissions (DPOAEs) may indicate preclinical noise-induced hearing loss (NIHL) in adolescents from unsafe personal music player (PMP) use. AIMS: The objective, therefore, was to observe preclinical signs of NIHL in 9th grade adolescents with clinically normal hearing by comparing DPOAE signals between different levels of A-weighted equivalent PMP exposure. SETTINGS AND DESIGN: Subjects were recruited from all secondary-level schools located in the city of Regensburg, Germany during two academic years 2009/2010 and 2010/2011...
November 2016: Noise & Health
https://www.readbyqxmd.com/read/27959894/sound-induced-intracellular-ca2-dynamics-in-the-adult-hearing-cochlea
#20
Dylan K Chan, Stephanie L Rouse
Ca2+ signaling has been implicated in the initial pathophysiologic mechanisms underlying the cochlea's response to acoustic overstimulation. Intracellular Ca2+ signaling (ICS) waves, which occur in glia and retinal cells in response to injury to activate cell regulatory pathways, have been proposed as an early event in cochlear injury. Disruption of ICS activity is thought to underlie Connexin 26-associated hearing loss, the most common genetic form of deafness, and downstream sequelae of ICS wave activity, such as MAP kinase pathway activation, have been implicated in noise-induced hearing loss...
2016: PloS One
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