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https://www.readbyqxmd.com/read/29328791/how-noisy-are-total-knee-and-hip-replacements
#1
Jonathan P Simpson, Andrew J Hamer
Orthopaedic theatre can be noisy. Fifty percent of orthopaedic theatre staff have features of noise-induced hearing loss (NIHL). In this study, decibel (dB) levels were recorded in 17 total knee replacements (TKRs) and 11 total hip replacements (THRs). Noise levels reached 105.6dB(A) using a hammer and 97.9dB(A) with an oscillating saw. Exposure to levels above 90dB (which occurred in every case) even for short time periods is proven to cause irreversible loss of hearing. Tools used in orthopaedic theatre produce impulse noises that can cause NIHL...
December 2017: Journal of Perioperative Practice
https://www.readbyqxmd.com/read/29317248/cognitive-decline-and-increased-hippocampal-p-tau-expression-in-mice-with-hearing-loss
#2
So Young Park, Min Jung Kim, Hong Lim Kim, Dong Kee Kim, Sang Won Yeo, Shi Nae Park
Hearing and cognition are commonly involved in both normal and pathological aging. Current clinical interest lies in whether peripheral hearing loss promotes cognitive decline. In our previous publication, the authors have shown a causal relationship between hearing and cognitive impairments in C57BL/6 mice. Here we extended the follow-up to 12 months to determine the long-term effects of hearing loss on cognition and to observe hippocampal p-tau and lipofuscin. One month old male mice were randomly allocated into two groups, the control (n = 12) and noise-induced hearing loss (NIHL) (n = 12)...
January 6, 2018: Behavioural Brain Research
https://www.readbyqxmd.com/read/29301492/effect-of-grm7-polymorphisms-on-the-development-of-noise-induced-hearing-loss-in-chinese-han-workers-a-nested-case-control-study
#3
Peipei Yu, Jie Jiao, Guoshun Chen, Wenhui Zhou, Huanling Zhang, Hui Wu, Yanhong Li, Guizhen Gu, Yuxin Zheng, Yue Yu, Shanfa Yu
BACKGROUND: Noise-induced hearing loss (NIHL) is a complex, irreversible disease caused by the interaction of genetic and environmental factors. In recent years, a great many studies have been done to explore the NIHL susceptibility genes among humans. So far, high powerful detections have been founded that genes of potassium ion channel genes (KCNQ4 and KCNE1), catalase (CAT), protocadherin 15 (PCDH15), myosin 14 (MYH14) and heart shock protein (HSP70) which have been identified in more than one population may be associated with the susceptibility to NIHL...
January 5, 2018: BMC Medical Genetics
https://www.readbyqxmd.com/read/29220389/association-of-genetic-variations-in-foxo3-gene-with-susceptibility-to-noise-induced-hearing-loss-in-a-chinese-population
#4
Haoran Guo, Enmin Ding, Ying Bai, Hengdong Zhang, Huanxi Shen, Jun Wang, Xianping Song, Wenyan Cai, Jiadi Guo, Baoli Zhu
Noise induced hearing loss (NIHL), a multifactorial disease involving both genetic and environmental factors, is one of the most important occupational health hazards. Nonetheless, the influence of FOXO3 variants on NIHL risk have not been illuminated. This research was conducted to explore the effects of FOXO3 polymorphisms on individual susceptibility to NIHL. A total of 2689 industrial workers from one textile factory of east China were recruited to participate in the current research. Venous blood was collected, questionnaire and pure-tone audiometry (PTA) was conducted by specialist physicians...
2017: PloS One
https://www.readbyqxmd.com/read/29216778/costs-and-effectiveness-of-hearing-conservation-programs-at-14%C3%A2-us-metal-manufacturing-facilities
#5
Stephanie K Sayler, Peter M Rabinowitz, Linda F Cantley, Deron Galusha, Richard L Neitzel
OBJECTIVE: This study characterised overall and specific costs associated with hearing conservation programmes (HCPs) at US metal manufacturing sites, and examined the association between these costs and several noise-induced hearing loss (NIHL) outcomes. DESIGN: We interviewed personnel and reviewed records at participating facilities. We also measured noise for comparison to the ten-year average of measurements made by each facility. NIHL outcomes assessed included rates of standard threshold shifts (STS) and high-frequency hearing loss, as well as prevalence of hearing impairment, for each participating facility...
December 7, 2017: International Journal of Audiology
https://www.readbyqxmd.com/read/29176785/association-between-polymorphisms-of-heat-shock-protein-70-genes-and-noise-induced-hearing-loss-a-meta-analysis
#6
Song Lei, Liu Huang, Yaqian Liu, Liangwen Xu, Dahui Wang, Lei Yang
BACKGROUND: Recent studies have evaluated the associations between polymorphisms of the heat-shock protein 70 (HSP70) encoding genes and noise-induced hearing loss (NIHL). However, the conclusions of these studies are conflicting. The objective of this meta-analysis was to clarify the association between all known polymorphisms of HSP70 genetic loci and susceptibility to NIHL, based on existing reports. METHODS: We conducted a meta-analysis of the association between Hsp70 polymorphisms (rs1043618, rs1061581, rs2075800, rs2227956, and rs2763979) and NIHL risk in both Chinese and Caucasian males...
2017: PloS One
https://www.readbyqxmd.com/read/29172785/examining-the-noisy-life-of-the-college-musician-weeklong-noise-dosimetry-of-music-and-non-music-activities
#7
Jennifer B Tufts, Erika Skoe
OBJECTIVE: To examine the contribution of all daily activities, including non-music activities, to the overall noise exposure of college student musicians, and to compare their "noise lives" with those of non-musician college students. DESIGN: Continuous week-long dosimetry measurements were collected on student musicians and non-musicians. During the measurement period, participants recorded their daily activities in journals. STUDY SAMPLE: 22 musicians and 40 non-musicians, all students (aged 18-24 years) at the University of Connecticut...
November 24, 2017: International Journal of Audiology
https://www.readbyqxmd.com/read/29145455/association-of-polymorphisms-in-heat-shock-protein-70-genes-with-the-susceptibility-to-noise-induced-hearing-loss-a-meta-analysis
#8
Shimin Zong, Xue Zeng, Tianyi Liu, Fangmin Wan, Pan Luo, Hongjun Xiao
BACKGROUND: Several case-control studies reported the relationship between single nucleotide polymorphisms (SNPs) in HSP70 genes and noise-induced hearing loss (NIHL). However, their conclusions are conflicting. This meta-analysis aims to identify the association of HSP70 variants and NIHL susceptibility. METHOD: A systematical literature search was performed in PubMed, Web of Science, EMBASE, and Wanfang Chinese database. The pooled odds radio (OR), 95% confidence interval (CI) and p value were calculated in fixed- or random-effects model according to the I2 value in the heterogeneity test...
2017: PloS One
https://www.readbyqxmd.com/read/29119679/noise-induced-hearing-loss-an-examination-of-the-methods-of-assessment-in-a-cross-sectional-study-of-87-industrial-workers
#9
S Das, M Mulheran, M Brewster, A R Banerjee
OBJECTIVES: The surveillance of noise-induced hearing loss (NIHL) according to the Health and Safety Executive (HSE) differs from the medico-legal criteria used to assess NIHL. Our study compares the two systems and proposes a novel method of simplifying the medico-legal criteria and applying it to ascertain noise-induced hearing loss. DESIGN: The anonymised audiograms of a group of 87 industrial workers from a single site were analysed with both methods. RESULTS: The comparison showed approximately one-third of the workers assessed in this study had their noise-induced hearing loss underestimated by the HSE criteria...
November 9, 2017: Clinical Otolaryngology
https://www.readbyqxmd.com/read/29116045/contemporary-noise-induced-hearing-loss-nihl-prevention
#10
Wiesław Sułkowski, Kalina Owczarek, Jurek Olszewski
Hearing impairment caused by noise, traditionally called - depending on the duration of exposure - acute or chronic acoustic trauma, includes, in addition to presbyacusis, the most common adult population of hearing impaired. In Poland - according to the report of the Central Statistical Office (GUS, 2011), the number of workers employed in NDN exceeded the noise level (85 dB) is about 200 thousand, the highest in the mining, metal and metal products production, textiles and wood production. According to the Regulation of the Council of Ministers of on June 30, 2009, on the list of occupational diseases (Journal of Laws No...
August 31, 2017: Otolaryngologia Polska
https://www.readbyqxmd.com/read/29058570/occupational-noise-exposure-and-hearing-defects-among-sawmill-workers-in-the-south-of-thailand
#11
Phayong Thepaksorn, Akio Koizumi, Kouji Harada, Wattasit Siriwong, Richard L Neitzel
The aim of this study was to investigate occupational noise exposure and hearing defects among sawmill workers in the South of Thailand. Seven hundred sawmill workers participated, of which 335 (47.9%) were male. The mean age of the sawmill workers was 33.5 years old (SD = 10.2), and more than 60% were <35 years old. 75.1% of the workers had less than 5 years of work experience. Only about one in four workers (25%) had been trained on use of personal protective equipment (PPE), and half of participants never or rarely wore PPEs while working...
October 23, 2017: International Journal of Occupational Safety and Ergonomics: JOSE
https://www.readbyqxmd.com/read/29026262/personal-listening-devices-in-australia-patterns-of-use-and-levels-of-risk
#12
REVIEW
Megan Gilliver, Jenny Nguyen, Elizabeth F Beach, Caitlin Barr
Personal listening devices (PLDs) have the potential to increase the risk of noise-induced hearing loss (NIHL) for users. The present study aimed to investigate the nature and extent of the risk posed, by describing the user profile of a PLD population, identifying listening habits of that population, and examining whether PLD risk status is associated with hearing damage. A sample of 4,185 Australian PLD users completed an online survey about listening behaviors and hearing health. Listeners were characterized as low, high, or very high-risk based on daily noise dose estimates calculated from self-reported listening volume and durations...
November 2017: Seminars in Hearing
https://www.readbyqxmd.com/read/29026261/prevention-of-noise-induced-hearing-loss-from-recreational-firearms
#13
REVIEW
Deanna K Meinke, Donald S Finan, Gregory A Flamme, William J Murphy, Michael Stewart, James E Lankford, Stephen Tasko
In the United States and other parts of the world, recreational firearm shooting is a popular sport that puts the hearing of the shooter at risk. Peak sound pressure levels (SPLs) from firearms range from ∼140 to 175 dB. The majority of recreational firearms (excluding small-caliber 0.17 and 0.22 rifles and air rifles) generate between 150 and 165 dB peak SPLs. High-intensity impulse sounds will permanently damage delicate cochlear structures, and thus individuals who shoot firearms are at a higher risk of bilateral, high-frequency, noise-induced hearing loss (NIHL) than peer groups who do not shoot...
November 2017: Seminars in Hearing
https://www.readbyqxmd.com/read/29022413/moderate-o3-o2-therapy-enhances-enzymatic-and-non-enzymatic-antioxidant-in-brain-and-cochlear-that-protects-noise-induced-hearing-loss
#14
Parvaneh Nasezadeh, Farshad Shahi, Mohammadjavad Fridoni, Enayatollah Seydi, Morteza Izadi, Ahmad Salimi
Mitochondrial damage and oxidative stress are known to contribute to the pathogenesis of noise-induced hearing loss (NIHL). In this study, we examined the protective effect of O2/O3 mixture (ozone/oxygen) therapy against mitochondrial induced damage and oxidative stress by noise exposure in rat brain and cochlear. For this purpose, rats were divided into four groups: 1 - control group; 2 - noise-exposed group (100 dB); 3 - noise + O2/O3, and 4 - O2/O3 (30 µg/ml). After 14 d, animals were anesthetised...
October 2017: Free Radical Research
https://www.readbyqxmd.com/read/28988263/reducing-risk-of-noise-induced-hearing-loss-in-collegiate-music-ensembles-using-ambient-technology
#15
Jason Powell, Kris Chesky
Student musicians are at risk for noise-induced hearing loss (NIHL) as they develop skills and perform during instructional activities. Studies using longitudinal dosimeter data show that pedagogical procedures and instructor behaviors are highly predictive of NIHL risk, thus implying the need for innovative approaches to increase instructor competency in managing instructional activities without interfering with artistic and academic freedom. Ambient information systems, an emerging trend in human-computer interaction that infuses psychological behavioral theories into technologies, can help construct informative risk-regulating systems...
September 2017: Medical Problems of Performing Artists
https://www.readbyqxmd.com/read/28951212/macrophage-recruitment-but-not-interleukin-1-beta-activation-enhances-noise-induced-hearing-damage
#16
Yu Mizushima, Chisato Fujimoto, Akinori Kashio, Kenji Kondo, Tatsuya Yamasoba
It has been suggested that macrophages or inflammatory monocytes participate in the pathology of noise-induced hearing loss (NIHL), but it is unclear how extensively these cells contribute to the development of temporary and/or permanent NIHL. To address this question, we used clodronate liposomes to deplete macrophages and monocytes. After clodronate liposome injection, mice were exposed to 4-kHz octave band noise at 121 dB for 4 h. Compared to vehicle-injected controls, clodronate-treated mice exhibited significantly reduced permanent threshold shifts at 4 and 8 kHz and significantly smaller outer hair cell losses in the lower-apical cochlear turn...
November 18, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28937016/impact-of-usage-of-personal-music-systems-on-oto-acoustic-emissions-among-medical-students
#17
Prasanth G Narahari, Jayashree Bhat, Arivudai Nambi, Anshul Arora
BACKGROUND: Intact hearing is essential for medical students and physicians for communicating with patients and appreciating internal sounds with a stethoscope. With the increased use of (PMSs), they are exposed to high sound levels and are at a risk of developing hearing loss. The effect of long term personal music system (PMS) usage on auditory sensitivity has been well established. Our study has reported the immediate and short term effect of PMS usage on hearing especially among medical professionals...
September 2017: Noise & Health
https://www.readbyqxmd.com/read/28937014/sex-bias-in-basic-and-preclinical-noise-induced-hearing-loss-research
#18
Amanda Marie Lauer, Katrina Marie Schrode
INTRODUCTION: Sex differences in brain biochemistry, physiology, structure, and function have been gaining increasing attention in the scientific community. Males and females can have different responses to medications, diseases, and environmental variables. A small number of the approximately 7500 studies of noise-induced hearing loss (NIHL) have identified sex differences, but the mechanisms and characterization of these differences have not been thoroughly studied. The National Institutes of Health (NIH) issued a mandate in 2015 to include sex as a biological variable in all NIH-funded research beginning in January 2016...
September 2017: Noise & Health
https://www.readbyqxmd.com/read/28928030/the-histone-deacetylase-inhibitor-sodium-butyrate-protects-against-noise-induced-hearing-loss-in-guinea-pigs
#19
Deng-Hua Yang, Jing Xie, Ke Liu, Zhe Peng, Jing-Ying Guo, Shu-Kui Yu, Guo-Peng Wang, Shu-Sheng Gong
Noise-induced hearing loss (NIHL) severely impacts the quality of life of affected individuals. Oxidative stress resulting from noise exposure is a significant cause of NIHL. Although histone deacetylase (HDAC) inhibitors were shown to protect against NIHL, the underlying mechanism remains unclear, and it is not known how they act on noise-induced oxidative stress. In the current study, we investigated the expression levels of acetyl-histone H3 (Lys9) (H3-AcK9), histone deacetylase 1 (HDAC1), and 3-nitrotyrosine (3-NT), an oxidative stress marker, in a guinea pig model of NIHL using immunohistology and Western blotting...
November 1, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28918463/apoptotic-mechanisms-after-repeated-noise-trauma-in-the-mouse-medial-geniculate-body-and-primary-auditory-cortex
#20
Felix Fröhlich, Arne Ernst, Ira Strübing, Dietmar Basta, Moritz Gröschel
A correlation between noise-induced apoptosis and cell loss has previously been shown after a single noise exposure in the cochlear nucleus, inferior colliculus, medial geniculate body (MGB) and primary auditory cortex (AI). However, repeated noise exposure is the most common situation in humans and a major risk factor for the induction of noise-induced hearing loss (NIHL). The present investigation measured cell death pathways using terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL) in the dorsal, medial and ventral MGB (dMGB, mMGB and vMGB) and six layers of the AI (AI-1 to AI-6) in mice (NMRI strain) after a second noise exposure (double-exposure group)...
December 2017: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
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