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Chen Q, Deng Q, Liu Y, Long Z, Li S, Liu Q, Lv Y, Qin J, Yang A, Huang Y, Tan Z, Wang D, Xing X, Xiao Y. Co-exposure of petrochemical workers to noise and mixture of benzene, toluene, ethylbenzene, xylene, and styrene: Impact on mild renal impairment and interaction. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 346:123628. [PMID: 38395129 DOI: 10.1016/j.envpol.2024.123628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Revised: 01/30/2024] [Accepted: 02/20/2024] [Indexed: 02/25/2024]
Abstract
Epidemiological evidence concerning effects of simultaneous exposure to noise and benzene, toluene, ethylbenzene, xylene, and styrene (BTEXS) on renal function remains uncertain. In 2020, a cross-sectional study was conducted among 1160 petrochemical workers in southern China to investigate effects of their co-exposure on estimated glomerular filtration rate (eGFR) and mild renal impairment (MRI). Noise levels were assessed using cumulative noise exposure (CNE). Urinary biomarkers for BTEXS were quantified. We found the majority of workers had exposure levels to noise and BTEXS below China's occupational exposure limits. CNE, trans, trans-muconic acid (tt-MA), and the sum of mandelic acid and phenylglyoxylic acid (PGMA) were linearly associated with decreased eGFR and increased MRI risk. We observed U-shaped associations for both N-acetyl-S-phenyl-L-cysteine (SPMA) and o-methylhippuric acid (2-MHA) with MRI. In further assessing the joint effect of BTEXS (β, -0.164 [95% CI, -0.296 to -0.033]) per quartile increase in all BTEXS metabolites on eGFR using quantile g-computation models, we found SPMA, tt-MA, 2-MHA, and PGMA played pivotal roles. Additionally, the risk of MRI associated with tt-MA was more pronounced in workers with lower CNE levels (P = 0.004). Multiplicative interaction analysis revealed antagonisms of CNE and PGMA on MRI risk (P = 0.034). Thus, our findings reveal negative dose-effect associations between noise and BTEXS mixture exposure and renal function in petrochemical workers. With the exception of toluene, benzene, xylene, ethylbenzene, and styrene are all concerning pollutants for renal dysfunction. Effects of benzene, ethylbenzene, and styrene exposure on renal dysfunction were more pronounced in workers with lower CNE.
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Affiliation(s)
- Qingfei Chen
- Department of Occupational and Environmental Health, School of Public Health, Sun Yat-sen University, No. 74 Zhongshan Road 2, Guangzhou, 510080, Guangdong, China; Joint International Research Laboratory of Environment and Health, Ministry of Education, School of Public Health, Sun Yat-sen University, No. 74 Zhongshan Road 2, Guangzhou, 510080, Guangdong, China
| | - Qifei Deng
- School of Public Health, Guangzhou Medical University, Xinzao Town, Panyu District, Guangzhou, 511436, Guangdong, China
| | - Yan Liu
- Department of Occupational and Environmental Health, School of Public Health, Sun Yat-sen University, No. 74 Zhongshan Road 2, Guangzhou, 510080, Guangdong, China
| | - Zihao Long
- Department of Occupational and Environmental Health, School of Public Health, Sun Yat-sen University, No. 74 Zhongshan Road 2, Guangzhou, 510080, Guangdong, China
| | - Shuangqi Li
- Department of Occupational and Environmental Health, School of Public Health, Sun Yat-sen University, No. 74 Zhongshan Road 2, Guangzhou, 510080, Guangdong, China
| | - Qing Liu
- Department of Occupational and Environmental Health, School of Public Health, Sun Yat-sen University, No. 74 Zhongshan Road 2, Guangzhou, 510080, Guangdong, China
| | - Yanrong Lv
- Department of Occupational and Environmental Health, School of Public Health, Sun Yat-sen University, No. 74 Zhongshan Road 2, Guangzhou, 510080, Guangdong, China
| | - Jingyao Qin
- Department of Occupational and Environmental Health, School of Public Health, Sun Yat-sen University, No. 74 Zhongshan Road 2, Guangzhou, 510080, Guangdong, China
| | - Aichu Yang
- Guangdong Provincial Key Laboratory of Occupational Disease Prevention and Treatment, Guangdong Province Hospital for Occupational Disease Prevention and Treatment, No. 68 Haikang Street, Guangzhou, 510300, Guangdong, China
| | - Yongshun Huang
- Guangdong Provincial Key Laboratory of Occupational Disease Prevention and Treatment, Guangdong Province Hospital for Occupational Disease Prevention and Treatment, No. 68 Haikang Street, Guangzhou, 510300, Guangdong, China
| | - Zhaoqing Tan
- Department of Occupational and Environmental Health, School of Public Health, Sun Yat-sen University, No. 74 Zhongshan Road 2, Guangzhou, 510080, Guangdong, China
| | - Dongsheng Wang
- Department of Occupational and Environmental Health, School of Public Health, Sun Yat-sen University, No. 74 Zhongshan Road 2, Guangzhou, 510080, Guangdong, China
| | - Xiumei Xing
- Department of Occupational and Environmental Health, School of Public Health, Sun Yat-sen University, No. 74 Zhongshan Road 2, Guangzhou, 510080, Guangdong, China; Joint International Research Laboratory of Environment and Health, Ministry of Education, School of Public Health, Sun Yat-sen University, No. 74 Zhongshan Road 2, Guangzhou, 510080, Guangdong, China
| | - Yongmei Xiao
- Department of Occupational and Environmental Health, School of Public Health, Sun Yat-sen University, No. 74 Zhongshan Road 2, Guangzhou, 510080, Guangdong, China; Joint International Research Laboratory of Environment and Health, Ministry of Education, School of Public Health, Sun Yat-sen University, No. 74 Zhongshan Road 2, Guangzhou, 510080, Guangdong, China.
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Yang L, Gutierrez DE, Guthrie OW. Systemic health effects of noise exposure. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART B, CRITICAL REVIEWS 2024; 27:21-54. [PMID: 37957800 DOI: 10.1080/10937404.2023.2280837] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2023]
Abstract
Noise, any unwanted sound, is pervasive and impacts large populations worldwide. Investigators suggested that noise exposure not only induces auditory damage but also produces various organ system dysfunctions. Although previous reviews primarily focused on noise-induced cardiovascular and cerebral dysfunctions, this narrow focus has unintentionally led the research community to disregard the importance of other vital organs. Indeed, limited studies revealed that noise exposure impacts other organs including the liver, kidneys, pancreas, lung, and gastrointestinal tract. Therefore, the aim of this review was to examine the effects of noise on both the extensively studied organs, the brain and heart, but also determine noise impact on other vital organs. The goal was to illustrate a comprehensive understanding of the systemic effects of noise. These systemic effects may guide future clinical research and epidemiological endpoints, emphasizing the importance of considering noise exposure history in diagnosing various systemic diseases.
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Affiliation(s)
- Li Yang
- Cell & Molecular Pathology Laboratory, Communication Sciences and Disorders, Northern Arizona University, Flagstaff, AZ, USA
- Department of Biological Sciences, Northern Arizona University, Flagstaff, AZ, USA
| | - Daniel E Gutierrez
- Arizona College of Osteopathic Medicine, Midwestern University, Glendale, AZ, USA
| | - O'neil W Guthrie
- Cell & Molecular Pathology Laboratory, Communication Sciences and Disorders, Northern Arizona University, Flagstaff, AZ, USA
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Abouee-Mehrizi A, Soltanpour Z, Mohammadian Y, Sokouti A, Barzegar S. Health risk assessment of exposure to benzene, toluene, ethyl benzene, and xylene in shoe industry-related workplaces. Toxicol Ind Health 2024; 40:33-40. [PMID: 37936286 DOI: 10.1177/07482337231212693] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2023]
Abstract
Benzene, toluene, ethyl benzene, and xylene (BTEX) are prevalent pollutants in shoe industry-related workplaces. The aim of this study was to assess exposure to BTEX and their carcinogenic and non-carcinogenic risks in shoe-industry-related workplaces. This study was carried out at different shoe manufactures, small shoe workshop units, shoe markets, and shoe stores in Tabriz, Iran in 2021. Personal inhalation exposure to BTEX was measured using the National Institute for Occupational Safety and Health (NIOSH) 1501 method. Carcinogenic and non-carcinogenic risks due to inhalation exposure to BTEX were estimated by United States Environmental Protection Agency (U.S. EPA) method based on Mont Carlo simulation. Results showed that the concentrations of benzene and toluene were higher than the threshold limit value (TLV) in both gluing and non-gluing units of shoe manufactures. The total carcinogenic risk (TCR) due to exposure to benzene and ethyl benzene was considerable in all shoe industry-related workplaces. Also, the hazard index (HI) as a non-carcinogenic index was higher than standard levels in all shoe industry-related workplaces. Therefore, shoe industry-related workers are at cancer and non-cancer risks due to exposure to BTEX. Prevention measures need to be implemented to reduce the concentration of BTEX in shoe industry-related workplaces.
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Affiliation(s)
- Amirreza Abouee-Mehrizi
- Department of Occupational Health Engineering, Faculty of Health, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Zahra Soltanpour
- Department of Occupational Health Engineering, Faculty of Health, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Yousef Mohammadian
- Department of Occupational Health Engineering, Faculty of Health, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Akbar Sokouti
- Department of Health, Safety and Environment Management, Faculty of Health, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Sajjad Barzegar
- Ms.c in Occupational Health Engineering, Sharif Safety Index Company, Tehran, Iran
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Abouee-Mehrizi A, Rasoulzadeh Y, Solali S, Esmaeilizadeh H, Iraji Z, Mesgari-Abbasi M. Hematotoxicity induced by simultaneous exposure to noise and toluene in New Zealand white rabbits: Synergistic and antagonistic effects. Toxicol Ind Health 2023:7482337231180404. [PMID: 37303071 DOI: 10.1177/07482337231180404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Exposure to numerous pollutants is prevalent in workplaces. Examination of combined exposure to different harmful physical factors and chemicals has offered new insights into toxicology in recent years. This study aimed to investigate the hematological alterations caused by exposure to noise and toluene. Twenty-four New Zealand white rabbits were exposed to 1000 ± 50 ppm toluene and/or 100 ± 5 dB noise for 14 consecutive days. Exposure to noise and toluene changed a number of parameters of white blood cells (WBC), red blood cells (RBC), and platelets on different days after the exposure. Simultaneous exposure to noise and toluene increased WBC, and exposure to noise and toluene alone decreased RBC. Exposure to noise and toluene alone increased basophile, monocyte, and neutrophil counts. The coefficient of variation of red blood cell distribution width (RDW-CV) and the standard deviation of red blood cell distribution width (RDW-SD) significantly increased after co-exposure to noise and toluene. Platelet levels increased in the noise-exposed and the co-exposed groups and decreased in the toluene-exposed group. Furthermore, co-exposure to noise and toluene induced dissimilar synergistic and antagonistic effects on the hematological indices. According to the results of this study, simultaneous exposure to toluene and noise can aggravate some hematotoxic effects compared to exposure to noise or toluene alone. The results also demonstrated the vital role of the modulatory mechanisms of the body in controlling the detrimental effects of stressors.
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Affiliation(s)
- Amirreza Abouee-Mehrizi
- Department of Occupational Health Engineering, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Yahya Rasoulzadeh
- Department of Occupational Health Engineering, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Saeed Solali
- Department of Immunology, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Hadi Esmaeilizadeh
- Department of Anesthesiology, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Zeynab Iraji
- Department of Statistics and Epidemiology, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mehran Mesgari-Abbasi
- Drug Applied Research Center (DARC), Tabriz University of Medical Sciences, Tabriz, Iran
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Soares MV, Mesadri J, Gonçalves DF, Cordeiro LM, Franzen da Silva A, Obetine Baptista FB, Wagner R, Dalla Corte CL, Soares FAA, Ávila DS. Neurotoxicity induced by toluene: In silico and in vivo evidences of mitochondrial dysfunction and dopaminergic neurodegeneration. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 298:118856. [PMID: 35033616 DOI: 10.1016/j.envpol.2022.118856] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Revised: 12/21/2021] [Accepted: 01/12/2022] [Indexed: 06/14/2023]
Abstract
Toluene is an air pollutant widely used as an organic solvent in industrial production and emitted by fossil fuel combustion, in addition to being used as a drug of abuse. Its toxic effects in the central nervous system have not been well established, and how and which neurons are affected remains unknown. Hence, this study aimed to fill this gap by investigating three central questions: 1) How does toluene induce neurotoxicity? 2) Which neurons are affected? And 3) What are the long-term effects induced by airborne exposure to toluene? To this end, a Caenorhabditis elegans model was employed, in which worms at the fourth larval stage were exposed to toluene in the air for 24 h in a vapor chamber to simulate four exposure scenarios. After the concentration-response curve analysis, we chose scenarios 3 (E3: 792 ppm) and 4 (E4: 1094 ppm) for the following experiments. The assays were performed 1, 48, or 96 h after removal from the exposure environments, and an irreversible reduction in neuron fluorescence and morphologic alterations were observed in different neurons of exposed worms, particularly in the dopaminergic neurons. Moreover, a significant impairment in a dopaminergic-dependent behavior was also associated with negative effects in healthspan endpoints, and we also noted that mitochondria may be involved in toluene-induced neurotoxicity since lower adenosine 5'-triphosphate (ATP) levels and mitochondrial viability were observed. In addition, a reduction of electron transport chain activity was evidenced using ex vivo protocols, which were reinforced by in silico and in vitro analysis, demonstrating toluene action in the mitochondrial complexes. Based on these findings model, it is plausible that toluene neurotoxicity can be initiated by complex I inhibition, triggering a mitochondrial dysfunction that may lead to irreversible dopaminergic neuronal death, thus impairing neurobehavioral signaling.
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Affiliation(s)
- Marcell Valandro Soares
- Departamento de Bioquímica e Biologia Molecular, Centro de Ciências Naturais e Exatas, Programa de Pós-graduação em Ciências Biológicas, Bioquímica Toxicológica, Universidade Federal de Santa Maria, Camobi, 97105-900, Santa Maria, RS, Brazil; Grupo de Pesquisa em Bioquímica e Toxicologia em Caenorhabditis elegans (GBToxCe), Universidade Federal do Pampa - UNIPAMPA, CEP 97500-970, Uruguaiana, RS, Brazil
| | - Juliana Mesadri
- Departamento: Tecnologia e Ciência dos Alimentos, Centro de Ciência Rurais, Programa de Pós-graduação em Ciência e Tecnologia dos Alimentos, Universidade Federal de Santa Maria, RS, Brazil
| | - Débora Farina Gonçalves
- Departamento de Bioquímica e Biologia Molecular, Centro de Ciências Naturais e Exatas, Programa de Pós-graduação em Ciências Biológicas, Bioquímica Toxicológica, Universidade Federal de Santa Maria, Camobi, 97105-900, Santa Maria, RS, Brazil
| | - Larissa Marafiga Cordeiro
- Departamento de Bioquímica e Biologia Molecular, Centro de Ciências Naturais e Exatas, Programa de Pós-graduação em Ciências Biológicas, Bioquímica Toxicológica, Universidade Federal de Santa Maria, Camobi, 97105-900, Santa Maria, RS, Brazil
| | - Aline Franzen da Silva
- Departamento de Bioquímica e Biologia Molecular, Centro de Ciências Naturais e Exatas, Programa de Pós-graduação em Ciências Biológicas, Bioquímica Toxicológica, Universidade Federal de Santa Maria, Camobi, 97105-900, Santa Maria, RS, Brazil
| | - Fabiane Bicca Obetine Baptista
- Departamento de Bioquímica e Biologia Molecular, Centro de Ciências Naturais e Exatas, Programa de Pós-graduação em Ciências Biológicas, Bioquímica Toxicológica, Universidade Federal de Santa Maria, Camobi, 97105-900, Santa Maria, RS, Brazil
| | - Roger Wagner
- Departamento: Tecnologia e Ciência dos Alimentos, Centro de Ciência Rurais, Programa de Pós-graduação em Ciência e Tecnologia dos Alimentos, Universidade Federal de Santa Maria, RS, Brazil
| | - Cristiane Lenz Dalla Corte
- Departamento de Bioquímica e Biologia Molecular, Centro de Ciências Naturais e Exatas, Programa de Pós-graduação em Ciências Biológicas, Bioquímica Toxicológica, Universidade Federal de Santa Maria, Camobi, 97105-900, Santa Maria, RS, Brazil
| | - Félix Alexandre Antunes Soares
- Departamento de Bioquímica e Biologia Molecular, Centro de Ciências Naturais e Exatas, Programa de Pós-graduação em Ciências Biológicas, Bioquímica Toxicológica, Universidade Federal de Santa Maria, Camobi, 97105-900, Santa Maria, RS, Brazil
| | - Daiana Silva Ávila
- Grupo de Pesquisa em Bioquímica e Toxicologia em Caenorhabditis elegans (GBToxCe), Universidade Federal do Pampa - UNIPAMPA, CEP 97500-970, Uruguaiana, RS, Brazil.
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Salihu M, Batiha GES, Kasozi KI, Zouganelis GD, Sharkawi SM, Ahmed EI, Usman IM, Nalugo H, Ochieng JJ, Ssengendo I, Okeniran OS, Pius T, Kimanje KR, Kegoye ES, Kenganzi R, Ssempijja F. Crinum jagus (J. Thomps. Dandy): Antioxidant and protective properties as a medicinal plant on toluene-induced oxidative stress damages in liver and kidney of rats. Toxicol Rep 2022; 9:699-712. [PMID: 35433275 PMCID: PMC9011043 DOI: 10.1016/j.toxrep.2022.03.026] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 01/22/2022] [Accepted: 03/25/2022] [Indexed: 12/18/2022] Open
Abstract
Crinum jagus (C. jagus; J. Thomps.) Dandy (Liliaceae) is a pantropical plant known for its medicinal values and pharmacological properties. The study assessed the protective effects and changes in oxidative stress indices due to C. jagus leaf extracts on the toluene-induced liver and kidney injuries in rats. The study was conducted on 8-week-old male Wistar rats (n = 80), weighing 243.3 ± 1.42 g. Group I, 1 ml/kg distilled water for 7 days; Group II, 4.5 ml/kg toluene once, 1 ml/kg distilled water for 7 days; Group III, 4.5 ml/kg toluene once, 500 mg/kg methanolic extract for 7 days; Group IV, 4.5 ml/kg toluene once, 500 mg/kg aqueous extract for 7 days; Group V, 500 mg/kg methanolic extract for 7 days; Group VI, 500 mg/kg aqueous extract for 7 days; Group VII, 500 mg/kg of vitamin C for 7 days; Group, VIII, 4.5 ml/kg toluene once, 500 mg/kg vitamin C for 7 days, all administrations were given by oral gavage. The phytochemical contents, absolute and relative organ weights of liver and kidneys, liver and kidney function tests, antioxidant status, as well as histological tests were analyzed using standard protocols. The tannins, flavonoids, and polyphenols were in highest concentration in both extracts, content in methanol extract (57.04 ± 1.51 mgg-1, 35.43 ± 1.03 mgg-1, 28.2 ± 0.34 mgg-1 respectively) > aqueous extract (18.74 ± 1.01 mgg-1, 13.43 ± 0.47 mgg-1, 19.65 ± 0.21 mgg-1 respectively). In the negative control group (II), bodyweights significantly (P < 0.05) reduced by 22%, liver weight and kidney weight significantly (P < 0.05) increased by 42% and 83% respectively, liver-to-bodyweight and kidney-to-bodyweight ratios increased significantly (P < 0.05); serum liver function tests (LFTs) i.e., bilirubin, alkaline phosphatase (ALP), Alanine aminotransferase (ALT), Aspartate aminotransferase (AST), Gamma-glutamyl transferase (GGT), and serum kidney function tests (creatinine and urea) were significantly (P < 0.05) elevated; oxidant status (tissue malondialdehyde; MDA) was significantly (P < 0.05) elevated, antioxidant status i.e., tissue superoxide dismutase (SOD), catalase (CAT), and glutathione (GSH) levels was significantly (P < 0.05) reduced; with markedly visible renal and hepatic histopathological findings, compared to the normal control group. In C. jagus extract test groups (III and IV), the parameters were significantly (P < 0.05) alleviated and reversed to normal/near normal compared to the negative control. The LFTs, kidney function tests, and antioxidant status were significantly (P < 0.05) more improved with the methanol extract test and standard control groups compared to the aqueous extract test group; Also, the methanol extract test group showed better histological features than the aqueous extract test and standard control groups. The methanolic extract shows better antioxidant potential due to the availability of more nonenzymatic antioxidants (tannins, flavonoids, and polyphenols). The findings showed that toluene is a very aggressive xenobiotic due to the promotion of oxidative stress and peroxidation of cellular lipids, but C. jagus leaves provide significant protection through the reducing power of nonenzymatic antioxidants and their ability to induce endogenous antioxidant enzymes (SOD, CAT, and glutathione reductase or GR) causing reduced cellular lipid peroxidation and tissue damages, quickened tissue repair, and improved cell biology of liver and kidneys during toluene toxicity. The methanol leaf extract provides better protection and should be advanced for more experimental and clinical studies to confirm its efficacy in alleviating oxidative stress tissue injuries, specifically due to toluene.
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Key Words
- ALP, Alkaline phosphatase
- ALT, Alanine aminotransferase
- AST, Aspartate Aminotransferase
- Anti-lipid peroxidation
- Antioxidants
- Catalase Crinum jagus
- GGT, Gamma-glutamyl transferase
- GR, glutathione reductase
- GSH, Glutathione
- Glutathione superoxide dismutase
- Histoprotective
- LFTs, Liver function tests
- MDA, malondialdehyde
- Malondialdehyde
- SOD, Superoxide dismutase
- TOL, Toluene
- Toluene toxicity
- VC, Vitamin C
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Affiliation(s)
- Mariama Salihu
- Department of Biochemistry, Faculty of Biomedical Sciences, Kampala International University, Western Campus, P.O Box 71, Ishaka, Bushenyi, Uganda
| | - Gaber El-Saber Batiha
- Department of Pharmacology and Therapeutics, Faculty of Veterinary Medicine, Damanhour University, Damanhour 22511, Egypt
| | | | - George D. Zouganelis
- Human Science Research Centre, University of Derby, Kedleston Road, DE22 1GB, Derby, United Kingdom
| | - Souty M.Z. Sharkawi
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Nahda University, Beni-Suef, Egypt
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Beni-Suef University, Beni-Suef, Egypt
| | - Eman Ibrahim Ahmed
- Pharmacology and Therapeutics Department, College of Medicine, Jouf University, Sakaka 72346, Saudi Arabia
- Pharmacology Department, Faculty of Medicine, Fayoum University, Fayoum 63511, Egypt
| | - Ibe Michael Usman
- Department of Anatomy, Faculty of Biomedical Sciences, Kampala International University, Western Campus, P.O Box 71, Ishaka, Bushenyi, Uganda
| | - Halima Nalugo
- Department of Anatomy, Faculty of Medicine, Mbarara University of Science and Technology, P.O Box 1410, Mbarara, Uganda
| | - Juma J. Ochieng
- Department of Anatomy, Faculty of Biomedical Sciences, Kampala International University, Western Campus, P.O Box 71, Ishaka, Bushenyi, Uganda
| | - Ibrahim Ssengendo
- Department of Anatomy, Faculty of Biomedical Sciences, Kampala International University, Western Campus, P.O Box 71, Ishaka, Bushenyi, Uganda
| | - Olatayo Segun Okeniran
- Department of Anatomy, Faculty of Biomedical Sciences, Kampala International University, Western Campus, P.O Box 71, Ishaka, Bushenyi, Uganda
| | - Theophilus Pius
- Department of Medical Laboratory Sciences, School of Allied Health Sciences, Kampala International University Teaching Hospital, P.O Box 71, Ishaka, Bushenyi, Uganda
| | - Kyobe Ronald Kimanje
- Department of Biochemistry, Faculty of Biomedical Sciences, Kampala International University, Western Campus, P.O Box 71, Ishaka, Bushenyi, Uganda
| | - Eric Simidi Kegoye
- Department of Anatomy, Faculty of Biomedical Sciences, Kampala International University, Western Campus, P.O Box 71, Ishaka, Bushenyi, Uganda
| | - Ritah Kenganzi
- Department of Medical Laboratory Sciences, School of Allied Health Sciences, Kampala International University Teaching Hospital, P.O Box 71, Ishaka, Bushenyi, Uganda
| | - Fred Ssempijja
- Department of Anatomy, Faculty of Biomedical Sciences, Kampala International University, Western Campus, P.O Box 71, Ishaka, Bushenyi, Uganda
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Morata TC, Hungerford M, Konrad-Martin D. Potential Risks to Hearing Functions of Service Members From Exposure to Jet Fuels. Am J Audiol 2021; 30:922-927. [PMID: 34407375 DOI: 10.1044/2021_aja-20-00226] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Purpose Several military occupations, particularly those within the U.S. Air Force, require working with or around jet fuels. Jet fuels contain components that are known to affect central nervous function, yet effects of these fuels on auditory function, specifically auditory processing of sound, are not well understood at this time. Animal studies have demonstrated that exposure to jet fuels prior to noise exposure can exacerbate the noise exposure's effects, and service members exposed to jet fuels are at risk of noise exposure within their work environments. The purpose of this article was to give a brief synopsis of the evidence on the ototoxic effects due to jet fuel exposure to aid audiologists in their decision making when providing care for populations who are occupationally exposed to fuels or while during military service. Conclusions Exposure to jet fuels impacts central nervous function and, in combination with noise exposure, may have detrimental auditory effects that research has yet to fully explain. Additional longitudinal research is needed to explain the relationships, which have clinical implications for service members and others exposed to jet fuels. In the meantime, audiologists can gain useful information by screening for chemical exposures when obtaining patient case histories. If jet fuel exposure is suspected, the Lifetime Exposure to Noise and Solvents Questionnaire can be used to estimate a noise exposure ranking and identify other potentiating agents such as jet fuel and industrial chemicals. A history of jet fuel exposure should inform the selection of hearing tests in the audiometric evaluation and when devising the treatment plan.
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Affiliation(s)
- Thais C. Morata
- National Institute for Occupational Safety and Health, Cincinnati, OH
| | - Michelle Hungerford
- National Center for Rehabilitative Auditory Research, VA Portland Health Care System, OR
| | - Dawn Konrad-Martin
- National Center for Rehabilitative Auditory Research, VA Portland Health Care System, OR
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