1
|
Cacace AT, Berri B. Blast Overpressures as a Military and Occupational Health Concern. Am J Audiol 2023; 32:779-792. [PMID: 37713532 DOI: 10.1044/2023_aja-23-00125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/17/2023] Open
Abstract
PURPOSE This tutorial reviews effects of environmental stressors like blast overpressures and other well-known acoustic contaminants (continuous, intermittent, and impulsive noise) on hearing, tinnitus, vestibular, and balance-related functions. Based on the overall outcome of these effects, detailed consideration is given to the health and well-being of individuals. METHOD Because hearing loss and tinnitus are consequential in affecting quality of life, novel neuromodulation paradigms are reviewed for their positive abatement and treatment-related effects. Examples of clinical data, research strategies, and methodological approaches focus on repetitive transcranial magnetic stimulation (rTMS) and electrical stimulation of the vagus nerve paired with tones (VNSt) for their unique contributions to this area. RESULTS Acoustic toxicants transmitted through the atmosphere are noteworthy for their propensity to induce hearing loss and tinnitus. Mounting evidence also indicates that high-level rapid onset changes in atmospheric sound pressure can significantly impact vestibular and balance function. Indeed, the risk of falling secondary to loss of, or damage to, sensory receptor cells in otolith organs (utricle and saccule) is a primary reason for this concern. As part of the complexities involved in VNSt treatment strategies, vocal dysfunction may also manifest. In addition, evaluation of temporospatial gait parameters is worthy of consideration based on their ability to detect and monitor incipient neurological disease, cognitive decline, and mortality. CONCLUSION Highlighting these respective areas underscores the need to enhance information exchange among scientists, clinicians, and caregivers on the benefits and complications of these outcomes.
Collapse
Affiliation(s)
- Anthony T Cacace
- Department of Communication Sciences & Disorders, Wayne State University, Detroit, MI
| | - Batoul Berri
- Department of Communication Sciences & Disorders, Wayne State University, Detroit, MI
- Department of Otolaryngology, University of Michigan, Ann Arbor
| |
Collapse
|
2
|
Abdollahi MB, Dehghan SF, Balochkhaneh FA, Moghadam MA, Mohammadi H. Comparison of mice' sperm parameters exposed to some hazardous physical agents. Environ Anal Health Toxicol 2021; 36:e2021013-0. [PMID: 34353003 PMCID: PMC8598403 DOI: 10.5620/eaht.2021013] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2020] [Accepted: 06/28/2021] [Indexed: 11/16/2022] Open
Abstract
The present study was aimed to compare the effects of exposure to noise, vibration, lighting, and microwave on male mice' sperm parameters. The mice were randomly assigned to five groups of eight, which comprised of the unexposed group and exposure groups including the lighting (1000 lux), noise (100 dB(A)), vibration (acceleration of 1.2 m/s2) and microwave (power density of 5 watts). The exposure groups were subjected to the four agents for 8 hours a day, 5 days a week during a 2-week period. Semen analysis were done according to World Health Organization guidelines. The highest significant mean difference in sperm count (-1.35×106/mL) had being observed between the microwave group and the control one (P=0.001). The highest difference in immotile percent (25.88 %) had being observed between the noise group and the control one (P=0.001). The highest difference in normal morphology (-27.06 %) observed between the lighting exposure group and the control group (P=0.001). The four agents can cause changes in different sperm parameters, however for definite conclusion; more laboratory and field studies are required. In total, exposure to microwave has had the greatest effect on sperm count and exposure to light has had the greatest effect on normal morphology and non-progressive motility. Moreover, exposure to noise has had the greatest effect on progressive motility and immotile percent, respectively.
Collapse
Affiliation(s)
| | - Somayeh Farhang Dehghan
- Environmental and Occupational Hazards Control Research Center, School of Public Health and Safety, Shahid Beheshti University of Medical Sciences, Tehran,
Iran
| | | | | | - Hamzeh Mohammadi
- Department of Occupational Health, School of Public Health, Tehran University of Medical Sciences, Tehran,
Iran
| |
Collapse
|
3
|
Farazi N, Mahmoudi J, Sadigh-Eteghad S, Farajdokht F, Rasta SH. Synergistic effects of combined therapy with transcranial photobiomodulation and enriched environment on depressive- and anxiety-like behaviors in a mice model of noise stress. Lasers Med Sci 2021; 37:1181-1191. [PMID: 34432186 DOI: 10.1007/s10103-021-03370-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Accepted: 07/03/2021] [Indexed: 12/11/2022]
Abstract
The development of anxiety and depression due to chronic exposure to noise stress has remained as an unsolved health problem so far. Despite the studies suggesting the neuroenhancement effects of transcranial photobiomodulation (tPBM) and housing in an enriched environment (EE), the combined effects of these treatments have not been elucidated yet. Also, there is no available data on the relationship between the application of tPBM and hippocampal brain-derived neurotrophic factor (BDNF) expression in animal models of stress. The present study aims to investigate the application of the tPBM and EE (alone or in combination) on depressive- and anxiety-like behaviors in a mice model of noise stress. Mice were divided into five groups: control, noise, noise + EE, noise + tPBM, and noise + EE + tPBM. Except for the control group, other groups were subjected to 110 dB SPL white noise for 4 h/day for 14 consecutive days and received their respective treatments. Forced Swimming Test (FST) was used to evaluate depressive-like behaviors. Elevated Plus Maze (EPM) and Open Field Test (OFT) were used to evaluate anxiety-like behaviors. BDNF, tyrosine receptor kinase B (TrkB), and cAMP response element-binding (CREB) protein levels in the hippocampus were determined by the Western blot method, and also serum corticosterone levels were assessed using an ELISA kit. Exposure to noise stress significantly elevated serum corticosterone level; downregulated hippocampal BDNF, TrkB, and CREB protein expressions; and resulted in depressive- and anxiety-like behaviors. While, the application of tPBM (810 nm wavelength, 8 J/cm2 fluence, 10 Hz pulsed wave mode), housing in EE, and their combination lowered corticosterone levels, upregulated the BDNF/TrkB/CREB signaling pathway in the hippocampus, and improved behavioral outcomes in noise stress subjected mice. Our finding revealed the improving effects of tPBM and EE on depressive and anxiety-like behaviors induced by noise stress, possibly by augmenting the BDNF/TrkB/CREB signaling pathway.
Collapse
Affiliation(s)
- Narmin Farazi
- Department of Medical Physics, Tabriz University of Medical Sciences, 51666-14766, Tabriz, Iran.,Neurosciences Research Center, Tabriz University of Medical Sciences, 51666-14756, Tabriz, Iran
| | - Javad Mahmoudi
- Neurosciences Research Center, Tabriz University of Medical Sciences, 51666-14756, Tabriz, Iran.
| | - Saeed Sadigh-Eteghad
- Neurosciences Research Center, Tabriz University of Medical Sciences, 51666-14756, Tabriz, Iran
| | - Fereshteh Farajdokht
- Neurosciences Research Center, Tabriz University of Medical Sciences, 51666-14756, Tabriz, Iran
| | - Seyed Hossein Rasta
- Department of Medical Physics, Tabriz University of Medical Sciences, 51666-14766, Tabriz, Iran. .,Department of Medical Bioengineering, Tabriz University of Medical Sciences, Tabriz, Iran. .,School of Medical Sciences, University of Aberdeen, Aberdeen, UK.
| |
Collapse
|
4
|
Pienkowski M. Loud Music and Leisure Noise Is a Common Cause of Chronic Hearing Loss, Tinnitus and Hyperacusis. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:4236. [PMID: 33923580 PMCID: PMC8073416 DOI: 10.3390/ijerph18084236] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Revised: 04/12/2021] [Accepted: 04/14/2021] [Indexed: 12/20/2022]
Abstract
High sound levels capable of permanently damaging the ear are experienced not only in factories and war zones but in concert halls, nightclubs, sports stadiums, and many other leisure environments. This review summarizes evidence that loud music and other forms of "leisure noise" are common causes of noise-induced hearing loss, tinnitus, and hyperacusis, even if audiometric thresholds initially remain within clinically normal limits. Given the huge global burden of preventable noise-induced hearing loss, noise limits should be adopted in a much broader range of settings, and education to promote hearing conservation should be a higher public health priority.
Collapse
Affiliation(s)
- Martin Pienkowski
- Osborne College of Audiology, Salus University, Elkins Park, PA 19027, USA
| |
Collapse
|
5
|
Kanbur S, Sağir D. Effect of high sound wave on ovarian tissue: an experimental study. BIOTECHNOL BIOTEC EQ 2021. [DOI: 10.1080/13102818.2021.1912640] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
Affiliation(s)
- Savaş Kanbur
- Department of Medical Services and Techniques, Health Services Vocational School, Canakkale Onsekiz Mart University, Canakkale, Turkey
| | - Dilek Sağir
- Department of Nursing, Faculty of Health Science, Sinop University, Sinop, Turkey
| |
Collapse
|
6
|
Tsimpida D, Kontopantelis E, Ashcroft DM, Panagioti M. Conceptual Model of Hearing Health Inequalities (HHI Model): A Critical Interpretive Synthesis. Trends Hear 2021; 25:23312165211002963. [PMID: 34049470 PMCID: PMC8165532 DOI: 10.1177/23312165211002963] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2020] [Revised: 12/29/2020] [Accepted: 02/25/2021] [Indexed: 11/16/2022] Open
Abstract
Hearing loss is a major health challenge that can have severe physical, social, cognitive, economic, and emotional consequences on people's quality of life. Currently, the modifiable factors linked to socioeconomic inequalities in hearing health are poorly understood. Therefore, an online database search (PubMed, Scopus, and Psych) was conducted to identify literature that relates hearing loss to health inequalities as a determinant or health outcome. A total of 53 studies were selected to thematically summarize the existing literature, using a critical interpretive synthesis method, where the subjectivity of the researcher is intimately involved in providing new insights with explanatory power. The evidence provided by the literature can be summarized under four key themes: (a) There might be a vicious cycle between hearing loss and socioeconomic inequalities and lifestyle factors, (b) socioeconomic position may interact with less healthy lifestyles, which are harmful to hearing ability, (c) increasing health literacy could improve the diagnosis and prognosis of hearing loss and prevent the adverse consequences of hearing loss on people's health, and (d) people with hearing loss might be vulnerable to receiving low-quality and less safe health care. This study uses elements from theoretical models of health inequalities to formulate a highly interpretive conceptual model for examining hearing health inequalities. This model depicts the specific mechanisms of hearing health and their evolution over time. There are many modifiable determinants of hearing loss, in several stages across an individual's life span; tackling socioeconomic inequalities throughout the life-course could improve the population's health, maximizing the opportunity for healthy aging.
Collapse
Affiliation(s)
- Dialechti Tsimpida
- Centre for Primary Care and Health Services Research, Institute for Health Policy and Organisation (IHPO), School of Health Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, United Kingdom
| | - Evangelos Kontopantelis
- Institute for Health Policy and Organisation (IHPO), School of Health Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, United Kingdom
| | - Darren M. Ashcroft
- NIHR Greater Manchester Patient Safety Translational Research Centre, School of Health Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, United Kingdom
| | - Maria Panagioti
- NIHR Greater Manchester Patient Safety Translational Research Centre, School of Health Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, United Kingdom
| |
Collapse
|
7
|
Rahman T, Faisal ARM, Khanam T, Shekhar HU. Recurrent Indoor Environmental Pollution and Its Impact on Health and Oxidative Stress of the Textile Workers in Bangladesh. ENVIRONMENTAL HEALTH INSIGHTS 2020; 14:1178630220938393. [PMID: 32843838 PMCID: PMC7418231 DOI: 10.1177/1178630220938393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Accepted: 06/02/2020] [Indexed: 06/11/2023]
Abstract
Perennial indoor environmental pollution in the textile industrial area is a potential health hazard for workers engaged in this line of work, resulting in mental aberration to severe health risks. This study was designed to investigate the indoor environmental quality of textile industries and correlate its effect on the occupational health and well-being of the textile workers by measuring plasma oxidative stress status in textile workers and healthy control subjects. Environmental samples were collected from 15 textile industries located in Dhaka division, and 30 volunteer textile workers and 30 volunteer office workers (control) aged 18 to 57 years participated in the study. The concentration of plasma ascorbic acid (P-ASC), plasma malondialdehyde (P-MDA), and plasma conjugated diene (P-CD) was measured in both groups. The noise level (78.0 ± 0.68 dB) and the formaldehyde level (141.80 ± 4.47 µg/m3) were found to be significantly higher in the indoor environmental area compared with those in the control area (70.17 ± 0.25 dB and 108.0 ± 0.76 µg/m3, respectively). Furthermore, the daily average concentration of suspended particulate matters (PMs), that is, PM2.5 (322.2 ± 13.46 µg/m3) and PM10 (411.0 ± 17.57 µg/m3), was also found to be significantly higher in the indoor environmental air compared with that in the control area (78.59 ± 1.66 and 174.0 ± 2.33 µg/m3, respectively). The levels of P-MDA (0.37 ± 0.03 nmol/L) and P-CD (14.74 ± 0.61 nmol/L) were significantly increased, whereas the level of P-ASC level (0.46 ± 0.04 mg/dL) was markedly decreased in the textile workers compared with the healthy control subjects (0.18 ± 0.01 nmol/L of P-MDA, 10.04 ± 0.44 nmol/L of P-CD, and 1.29 ± 0.06 mg/dL of P-ASC). The textile plants were found to have significantly elevated levels of indoor environmental pollutants compared with those in the control area, and the textile workers were significantly exposed to oxidative stresses compared with the control subjects. The use of noise pads and high-efficiency air filters is perhaps highly instrumental to put an end to this prevailing situation. Moreover, to overcome the oxidative stresses among workers, supplementation of antioxidant vitamins (ie, ascorbic acid and/or vitamin E) may be beneficial. In addition, to prevent serious health-related issues, proper precautions should be taken to protect the occupational health of the textile workers.
Collapse
Affiliation(s)
- Tania Rahman
- Department of Biochemistry and Molecular Biology, Faculty of Biological Sciences, University of Dhaka, Dhaka, Bangladesh
| | - Ar-Rafi Md. Faisal
- Department of Biochemistry and Molecular Biology, Faculty of Biological Sciences, University of Dhaka, Dhaka, Bangladesh
| | - Tahura Khanam
- Qtex Solutions Limited, 1st ISO 17020:2012 Accredited Environmental inspection body in Bangladesh
| | - Hossain Uddin Shekhar
- Department of Biochemistry and Molecular Biology, Faculty of Biological Sciences, University of Dhaka, Dhaka, Bangladesh
| |
Collapse
|
8
|
Themann CL, Masterson EA. Occupational noise exposure: A review of its effects, epidemiology, and impact with recommendations for reducing its burden. THE JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA 2019; 146:3879. [PMID: 31795665 DOI: 10.1121/1.5134465] [Citation(s) in RCA: 101] [Impact Index Per Article: 20.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Exposure to hazardous noise is one of the most common occupational risks, both in the U.S. and worldwide. Repeated overexposure to noise at or above 85 dBA can cause permanent hearing loss, tinnitus, and difficulty understanding speech in noise. It is also associated with cardiovascular disease, depression, balance problems, and lower income. About 22 million U.S. workers are currently exposed to hazardous occupational noise. Approximately 33% of working-age adults with a history of occupational noise exposure have audiometric evidence of noise-induced hearing damage, and 16% of noise-exposed workers have material hearing impairment. While the Mining, Construction, and Manufacturing sectors typically have the highest prevalence of noise exposure and hearing loss, there are noise-exposed workers in every sector and every sector has workers with hearing loss. Noise-induced hearing loss is preventable. Increased understanding of the biological processes underlying noise damage may lead to protective pharmacologic or genetic therapies. For now, an integrated public health approach that (1) emphasizes noise control over reliance on hearing protection, (2) illustrates the full impact of hearing loss on quality of life, and (3) challenges the cultural acceptance of loud noise can substantially reduce the impact of noise on worker health.
Collapse
Affiliation(s)
- Christa L Themann
- National Institute for Occupational Safety and Health, 1090 Tusculum Avenue, MS C-27, Cincinnati, Ohio 45226, USA
| | - Elizabeth A Masterson
- National Institute for Occupational Safety and Health, 1090 Tusculum Avenue, MS C-27, Cincinnati, Ohio 45226, USA
| |
Collapse
|
9
|
Kerdonfag P, Wadwongtham W, Taneepanichskul S. Hearing threshold levels among steel industry workers in Samut Prakan, Thailand. Risk Manag Healthc Policy 2019; 12:57-66. [PMID: 30881161 PMCID: PMC6413740 DOI: 10.2147/rmhp.s166042] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Background Industrial noise is generally considered from the perspective of environmental health and safety, with requirements for reduced occupational noise exposure, strict standards for hearing protection, and public health awareness campaigns. Materials and methods This cross-sectional study aimed to identify the hearing threshold levels (HTLs) among steel industry workers exposed to hazardous noises in Samut Prakan Province, Thailand, and investigate the associations between hearing loss and age and length of employment in the industry. Audiometric data for 93 participants were collected at the Samut Prakan Provincial Hospital. Qualified technicians performed audiometric screening using an audiometer in a quiet environment. Tests were conducted after participants had completely rested for ≥14 hours after the last exposure to workplace noise. Results The results showed that all participants had been employed in a work zone with a noise hazard for >1 year. Participants’ age ranged from 19 to 59 years and their work experience from 1 to 39 years. Average mean hearing thresholds in the right ear at 4, 6, and 8 kHz were 31.34, 29.62, and 25.64 dB, respectively. Mean hearing thresholds in the left ear at 4, 6, and 8 kHz were 40.15, 32.20, and 25.48 dB, respectively. Hearing loss related to work experience was greater than that attributable to age and work station. Duration of noise exposure ranged from 1 to 39 years, and more than half of the participants (60.2%) were exposed to hazardous noises from 6 to 25 years. Conclusion These findings show that participants’ age and experience were significantly associated with hearing loss at all levels. HTLs among industrial workers should be regularly assessed. At the health policy level, these workers need to start being protected when they begin working.
Collapse
Affiliation(s)
- Petcharat Kerdonfag
- Ramathidodi School of Nursing, Faculty of Medicine, Ramathibodi Hospital, Mahidol University, Bangkok, Thailand.,College of Public Health Sciences, Chulalongkorn University, Bangkok, Thailand,
| | - Winai Wadwongtham
- Department of Otolaryngology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | | |
Collapse
|
10
|
Tao Z, Wang Y, Zou C, Li Q, Luo Y. Assessment of ventilation noise impact from metro depot with over-track platform structure on workers and nearby inhabitants. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:9203-9218. [PMID: 30719673 DOI: 10.1007/s11356-019-04378-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Accepted: 01/24/2019] [Indexed: 06/09/2023]
Abstract
In order to alleviate the shortage of land use accompanied with urbanization, over-track building complexes above metro depots are developed rapidly in China, resulting in the larger mechanical ventilation needs in the metro depot. Excessive noise exposure caused by the huge ventilation system will bring serious impacts on the health of workers in the metro depot. This research intends to evaluate the noise annoyance in the metro depot and the noise influences on adjacent residential buildings by the ventilation system. A questionnaire survey of 100 people working in a metro depot of Guangzhou Metro Line 6 was conducted, and field measurements inside the metro depot and inside adjacent residential buildings were carried out. The environmental noise level in the metro depot and the ventilation fan-induced noise level inside adjacent residential buildings exceed the corresponding criterion limit of China. Dose-response relationship modeled by logistic function was used to assess the noise annoyance, which is found underestimating the percentage of "Annoyed" (% A) and percentage of "Little Annoyed" (% LA) of staffs in the metro depot, especially for the % LA. This may be attributed to the reducing reliability of dose-effect curves as the Ldn is higher than 65 dB(A). In order to alleviate the noise impact, noise-controlling measures need to be took. However, traditional noise-controlling measures cannot solve low-frequency noise disturbance.
Collapse
Affiliation(s)
- Ziyu Tao
- School of Civil Engineering and Transportation, South China University of Technology, Guangzhou, 510641, China
| | - Yimin Wang
- School of Civil Engineering and Transportation, South China University of Technology, Guangzhou, 510641, China
| | - Chao Zou
- School of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou, 510006, China.
| | - Qi Li
- School of Civil Engineering and Transportation, South China University of Technology, Guangzhou, 510641, China
| | - Yue Luo
- School of Civil Engineering and Transportation, South China University of Technology, Guangzhou, 510641, China
| |
Collapse
|
11
|
Work-Related Noise Exposure in a Cohort of Patients with Chronic Tinnitus: Analysis of Demographic and Audiological Characteristics. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2017; 14:ijerph14091035. [PMID: 28885581 PMCID: PMC5615572 DOI: 10.3390/ijerph14091035] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/19/2017] [Revised: 09/04/2017] [Accepted: 09/05/2017] [Indexed: 02/08/2023]
Abstract
Work-related noise exposure is one of the major factors contributing to the development of adult-onset hearing loss and tinnitus. The aim of this study was to analyze, in patients with chronic tinnitus and long-term occupational noise exposure, (A) characteristics of hearing loss, tinnitus, comorbidities, demographic characteristics and a history of work-related noise exposure and (B) differences among individuals employed in occupations with high and low risk of developing work-related noise-induced hearing loss (NIHL). One hundred thirty six patients with chronic tinnitus and at least a 10 year-long working history were divided into two groups based on the risk of their profession to induce NIHL. Individuals employed in jobs at high risk for NIHL were mostly males and exhibited a poorer hearing threshold, more evident in the left ear. Tinnitus was mostly bilateral; the next largest presentation was left-sided; patients described their tinnitus as buzzing or high-pitched. Correlation between age, length of tinnitus and worse hearing was found. Patients with a higher degree of hearing impairment were mostly males and were more likely to have a family history of hearing loss and at least one cardiovascular comorbidity. Our study shows some differences in individuals with tinnitus and a history of a profession associated with increased exposure to NIHL compared to those without such a history.
Collapse
|
12
|
Wang P, Wang Y, Zou C, Guo J. A preliminary investigation of noise impact within metro stations in the urban city of Guangzhou, China. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:11371-11382. [PMID: 28315054 DOI: 10.1007/s11356-017-8776-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2016] [Accepted: 03/08/2017] [Indexed: 06/06/2023]
Abstract
The noise in the metro station is synthesized from a variety of different noise sources. Excessive noise exposure will bring serious impacts on humans' health. To alleviate the shortage of the urban land, most metro stations are planning to develop convenience stores and shopping malls. In order to evaluate the potential noise impact on humans' comfort in the metro stations, this study selected four representative stations of Guangzhou Metro Line 1 to carry out a preliminary questionnaire survey of 226 respondents for the perception and perform a noise measurement. Additionally, platform screen doors as a potential method for noise mitigation were examined. The results show that the noise caused by trains was dominant in the metro stations; however, the noise impact by public broadcast and passengers cannot be ignored. The noise levels of the transfer stations were obviously greater than the normal stations, especially during the peak hours. In addition, people in the metro stations have potential exposure to noise that the noise levels exceed the criteria limit of China, which would bring discomfort for humans; however, the normal activities of people would not be impacted. The platform screen doors should be further improved or relevant noise mitigation methods should be taken into account to reduce the noise level within the criteria limit.
Collapse
Affiliation(s)
- Peng Wang
- School of Civil Engineering and Transportation, South China University of Technology, Guangzhou, Guangdong, 510641, China
| | - Yimin Wang
- School of Civil Engineering and Transportation, South China University of Technology, Guangzhou, Guangdong, 510641, China
| | - Chao Zou
- School of Civil Engineering and Transportation, South China University of Technology, Guangzhou, Guangdong, 510641, China.
| | - Jixing Guo
- School of Civil Engineering and Transportation, South China University of Technology, Guangzhou, Guangdong, 510641, China
| |
Collapse
|
13
|
Régis ACFDC, Crispim KGM, Ferreira AP. Incidência e prevalência de perda auditiva induzida por ruído em trabalhadores de uma indústria metalúrgica, Manaus - AM, Brasil. REVISTA CEFAC 2014. [DOI: 10.1590/1982-0216201410813] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
OBJETIVO: estimar a incidência e a prevalência de déficit auditivo sugestivo de Perda Auditiva Induzida por Ruído e sua associação com idade e tempo de serviço em trabalhadores de uma indústria metalúrgica do pólo industrial de Manaus.MÉTODOS: estudo transversal descritivo em trabalhadores que se submeteram a exame audiométrico periódico no ano de 2012, totalizando 1499 sujeitos. Para estimativa da incidência foram selecionadas audiometrias de 763 trabalhadores com audição dentro da normalidade no exame de referência e comparados com exame atual. Realizou-se análise estatística por meio de medidas de tendência central, dispersão e distribuições de frequência. Para verificação de diferenças estatisticamente significantes utilizou-se o teste qui-quadrado, com nível de significância (p≤0,05).RESULTADOS: a prevalência de perda auditiva foi de 44,23% sendo 28,89% sugestivo de PAIR. Houve maior prevalência de perda auditiva nos trabalhadores com faixa etária acima de 45 anos e com tempo de serviço superior a 21 anos. Apenas 11,1% dos trabalhadores acima dos 21 anos de serviço apresentaram audição normal, e 61,9% perda auditiva sugestiva de Perda Auditiva Induzida por Ruído. A classificação de Não Sugestivo de Perda Auditiva Induzida por Ruído permanece estável nos indivíduos abaixo de 20 anos de exposição laboral (14,9%) e nas pessoas expostas com mais de 20 anos aumenta para 27%. A incidência de perda auditiva foi de 28% e desse total 19,7% sugestiva de Perda Auditiva Induzida por Ruído. Houve maior prevalência de perda auditiva grau leve.Conclusão:a prevalência e a incidência de perda auditiva aumentaram com a idade e tempo de serviço. As empresas devem se empenhar na implementação do Programa de Conservação Auditiva a fim de minimizar essas perdas.
Collapse
|
14
|
Wankhar D, Sheela Devi R, Ashok I. Emblica officinalis outcome on noise stress induced behavioural changes in Wistar albino rats. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.bionut.2013.12.011] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
|
15
|
Mohammadpour H, Moussavi Najarkola SA, Jalali M, Hosseini Asl A, Rahmati A. GIS-Based Noise and Hearing Loss Screening in Publishing Factory. HEALTH SCOPE 2013. [DOI: 10.17795/jhealthscope-13705] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
16
|
The more the worse: the grade of noise-induced hearing loss associates with the severity of tinnitus. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2010; 7:3071-9. [PMID: 20948948 PMCID: PMC2954569 DOI: 10.3390/ijerph7083071] [Citation(s) in RCA: 75] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/08/2010] [Revised: 07/20/2010] [Accepted: 07/29/2010] [Indexed: 11/16/2022]
Abstract
Tinnitus disturbs lives and negatively affects the quality of life of about 2% of the adult world population. Research has shown that the main cause of tinnitus is hearing loss. To analyze a possible association of the degree of hearing loss with the severity of tinnitus, we have performed a retrospective study using admission data on 531 patients suffering from chronic tinnitus. We have found that 83% of our tinnitus patients had a high frequency hearing loss corresponding to a noise-induced hearing loss (NIHL). There was a significant correlation between the mean hearing loss and the tinnitus loudness (p < 0.0001). Interestingly, patients suffering from decompensated chronic tinnitus had a greater degree of hearing loss than the patients with compensated form of tinnitus. In addition, we demonstrate that the degree of hearing loss positively correlates with the two subscales ("intrusiveness" and "auditory perceptional difficulties") of the Tinnitus Questionnaire. Our retrospective study provides indirect evidence supporting the hypothesis that the degree of noise-induced hearing loss influences the severity of tinnitus.
Collapse
|
17
|
Demirel R, Mollaoğlu H, Yeşilyurt H, Üçok K, Ayçiçek A, Akkaya M, Genç A, Uygur R, Doğan M. Noise Induces Oxidative Stress in Rat. ELECTRONIC JOURNAL OF GENERAL MEDICINE 2009. [DOI: 10.29333/ejgm/82631] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
18
|
Kim SJ, Jeong HJ, Myung NY, Kim MC, Lee JH, So HS, Park RK, Kim HM, Um JY, Hong SH. The protective mechanism of antioxidants in cadmium-induced ototoxicity in vitro and in vivo. ENVIRONMENTAL HEALTH PERSPECTIVES 2008; 116:854-62. [PMID: 18629305 PMCID: PMC2453151 DOI: 10.1289/ehp.10467] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2007] [Accepted: 02/25/2008] [Indexed: 05/20/2023]
Abstract
BACKGROUND Several heavy metals have been shown to have toxic effects on the peripheral and central auditory system. Cadmium (Cd2+) is an environmental contaminant showing a variety of adverse effects. Given the current rate of release into the environment, the amount of Cd2+ present in the human body and the incidence of Cd2+-related diseases are expected to increase. OBJECTIVE The overall aim of this study was to gain further insights into the mechanism of Cd2+-induced ototoxicity. METHODS Cell viability, reactive oxygen species (ROS), mitochondrial membrane potential (MMP), cytochrome c (cyt c), phosphorylated extracellular signal-regulated protein kinase (p-ERK), caspases, morphologic change, and functional changes in HEI-OC1 cells, rat cochlear explants, and mouse cochlea after Cd2+ exposure were measured by flow cytometry, immunohistochemical staining, Western blot analysis, and auditory brainstem response (ABR) recording. Mechanisms underlying Cd2+ototoxicity were studied using inhibitors of different signaling pathways, caspases, and antioxidants. RESULTS Cd2+ exposure caused cell death, ROS generation, MMP loss, cyt c release, activation of caspases, ERK activation, apoptosis, and finally auditory threshold shift. Cd2+ toxicity interfered with inhibitors of cellular signaling pathways, such as ERK and c-jun N-terminal kinase, and with caspase inhibitors, especially inhibitors of caspase-9 and caspase-3. The antioxidants N-acetyl-l-cysteine and ebselen showed a significant protective effect on the Cd2+ toxicity. CONCLUSIONS Cd2+ is ototoxic with a complex underlying mechanism. However, ROS generation may be the cause of the toxicity, and application of antioxidants can prevent the toxic effect.
Collapse
Affiliation(s)
- Su-Jin Kim
- College of Oriental Medicine, Kyung Hee University, Hoegi-Dong, Dongdaemun-Gu, Seoul, Republic of Korea
- Vestibulocochlear Research Center of Wonkwang University, Iksan, Jeonbuk, Republic of Korea
| | - Hyun-Ja Jeong
- College of Oriental Medicine, Kyung Hee University, Hoegi-Dong, Dongdaemun-Gu, Seoul, Republic of Korea
- Vestibulocochlear Research Center of Wonkwang University, Iksan, Jeonbuk, Republic of Korea
| | - Noh-Yil Myung
- College of Oriental Medicine, Kyung Hee University, Hoegi-Dong, Dongdaemun-Gu, Seoul, Republic of Korea
- Vestibulocochlear Research Center of Wonkwang University, Iksan, Jeonbuk, Republic of Korea
| | - Min-chol Kim
- Vestibulocochlear Research Center of Wonkwang University, Iksan, Jeonbuk, Republic of Korea
| | - Jeong-Han Lee
- Vestibulocochlear Research Center of Wonkwang University, Iksan, Jeonbuk, Republic of Korea
| | - Hong-seob So
- Vestibulocochlear Research Center of Wonkwang University, Iksan, Jeonbuk, Republic of Korea
| | - Rae-Kil Park
- Vestibulocochlear Research Center of Wonkwang University, Iksan, Jeonbuk, Republic of Korea
| | - Hyung-Min Kim
- College of Oriental Medicine, Kyung Hee University, Hoegi-Dong, Dongdaemun-Gu, Seoul, Republic of Korea
| | - Jae-Young Um
- College of Oriental Medicine, Kyung Hee University, Hoegi-Dong, Dongdaemun-Gu, Seoul, Republic of Korea
| | - Seung-Heon Hong
- Vestibulocochlear Research Center of Wonkwang University, Iksan, Jeonbuk, Republic of Korea
| |
Collapse
|
19
|
Omokhodion FO, Ekanem SU, Uchendu OC. Noise levels and hearing impairment in an urban community in Ibadan, Southwest Nigeria. J Public Health (Oxf) 2008. [DOI: 10.1007/s10389-008-0196-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
|
20
|
Caffier PP, Berl JC, Muggli A, Reinhardt A, Jakob A, Möser M, Fietze I, Scherer H, Hölzl M. Snoring noise pollution—the need for objective quantification of annoyance, regulatory guidelines and mandatory therapy for snoring. Physiol Meas 2006; 28:25-40. [PMID: 17151417 DOI: 10.1088/0967-3334/28/1/003] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Habitual snoring without episodes of apnea or hypoventilation and without respiratory related arousals is considered to be annoying and without any need for treatment. However, studies seem to suggest an enormous psychosocial impact of annoyance for the bed partner. Apart from subjective questionnaires there still exists no generally accepted mode of measurement that can describe snoring objectively. We therefore adapted methods developed for environmental medicine and established a new snore score using psycho-acoustic parameters. For quantification of snoring noise we conducted nocturnal measurements in 19 habitual snorers. Free-field snore sounds were acquired with two low-cost non-contact microphones and transferred to a PC (sampling frequency 11 kHz). The data were recorded, analysed and stored automatically using a MATLAB script. Following the analysis of sound characteristics and levels, the score was computed from relevant parameters containing the rating level (L(R)), maximum level, two percentile levels for frequent maxima (L(5)S; L(1)) and snoring time. The determined values substantially exceeded the prescribed limits defined by WHO noise guidelines, and mainly affected the equivalent continuous sound exposure level, rating level and the immission standard values of brief noise peaks, whose maximum was exceeded by up to 32 dB(A). The Berlin snore score illustrated the objective acoustic annoyance on a scale from 0 to 100. It allows inter-individual comparison and objectifies the need for therapy. The clinical applicability of evaluating the reduction of snoring after surgical therapy is discussed exemplarily. The presented measuring method was found to be suitable for quantifying snoring noise and can be easily integrated into existing polysomnographic applications. In the case of habitual snoring with objective evidence of psychosocially disturbing acoustic annoyance, health fund providers should assume the costs of mandatory medical therapy.
Collapse
Affiliation(s)
- P P Caffier
- Department of Otorhinolaryngology, Charité-University Medicine Berlin, Joint Facility of Free University and Humboldt-University, Campus Charité Mitte, Charitéplatz 1, D-10117 Berlin, Germany.
| | | | | | | | | | | | | | | | | |
Collapse
|
21
|
Abstract
Excessive noise exposure is a serious global urban health problem, adversely affecting millions of people. One often cited source of urban noise is mass transit, particularly subway systems. As a first step in determining risk within this context, we recently conducted an environmental survey of noise levels of the New York City transit system. Over 90 noise measurements were made using a sound level meter. Average and maximum noise levels were measured on subway platforms, and maximum levels were measured inside subway cars and at several bus stops for comparison purposes. The average noise level measured on the subway platforms was 86 +/- 4 dBA (decibel-A weighting). Maximum levels of 106, 112, and 89 dBA were measured on subway platforms, inside subway cars, and at bus stops, respectively. These results indicate that noise levels in subway and bus stop environments have the potential to exceed recommended exposure guidelines from the World Health Organization (WHO) and U.S. Environmental Protection Agency (EPA), given sufficient exposure duration. Risk reduction strategies following the standard hierarchy of control measures should be applied, where feasible, to reduce subway noise exposure.
Collapse
Affiliation(s)
- Robyn R M Gershon
- Department of Sociomedical Sciences, Columbia University, Mailman School of Public Health, New York, NY 10032, USA.
| | | | | | | |
Collapse
|
22
|
Sliwińska-Kowalska M, Dudarewicz A, Kotyło P, Zamysłowska-Szmytke E, Pawlaczyk-łuszczyńska M, Gajda-Szadkowska A. Individual Susceptibility to Noise-Induced Hearing Loss: Choosing an Optimal Method of Retrospective Classification of Workers into Noise-Susceptible and Noise-Resistant Groups. Int J Occup Med Environ Health 2006; 19:235-45. [PMID: 17402219 DOI: 10.2478/v10001-006-0029-2] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
OBJECTIVES Individual susceptibility to noise-induced hearing loss (NIHL) depends on the interaction between intrinsic and environmental factors. To proceed with the study on NIHL susceptibility genes an appropriate selection of workers susceptible and resistant to noise is crucial. The aim of the study was to compare four different methods of subject classification by the susceptibility to NIHL in a group of 949 workers of an electric power plant exposed to steady-state noise at the workplace. MATERIALS AND METHODS One method based the classification of the workers on the international reference standard ISO 1999:1990; from the entire group of workers, 10% of the subjects with the worst hearing thresholds (HT) in the model were categorized as susceptible to NIHL, whereas 10% of the subjects with the best HT were categorized as resistant to noise. According to three other methods, the entire group of workers was first divided into subgroups by age, duration of employment and the level of noise, and then 10% of the subjects at each HT extreme were selected. RESULTS The first classification allowed to achieve an excellent separation between HT of the susceptible and resistant subgroups. The susceptible subgroup was significantly younger than the resistant one, showed a shorter duration of employment and a lower level of noise exposure, which is in line with the definition of increased vulnerability to NIHL. The three other methods produced poorer separation of HT with smaller or no gap between HT values in subgroups. CONCLUSIONS The selection of subjects from the entire worker population of a given industry based on the ISO 1999:1990 standard can be regarded as the most reliable method of classification of noise-susceptible and noise-resistant workers to be used in the future genetic studies on NIHL susceptibility genes.
Collapse
|