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Baiduc RR, Bogle B, Gonzalez Ii F, Dinces E, Lee DJ, Daviglus ML, Dhar S, Cai J. Hearing Loss and Cardiovascular Disease Risk Profiles: Data from the Hispanic Community Health Study/Study of Latinos. J Am Acad Audiol 2022; 33:445-459. [PMID: 39271108 DOI: 10.1055/s-0042-1758529] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/15/2024]
Abstract
BACKGROUND Individual cardiovascular disease (CVD) risk factors (RFs) have been associated with hearing loss (HL). The relationship to aggregate risk is poorly understood and has not been explored in the Hispanic/Latino population. PURPOSE The aim of this study was to characterize the association between aggregate CVD RF burden and hearing among Hispanics/Latinos. RESEARCH DESIGN Cross-sectional examination. STUDY SAMPLE Participants (18-74 years; n = 12,766) in the Hispanic Community Health Study/Study of Latinos. DATA COLLECTION AND ANALYSIS Thresholds (0.5-8 kHz) were obtained, and HL was defined dichotomously as pure-tone average (PTA0.5,1, 2,4) > 25 dB HL. Optimal CVD risk burden was defined as follows: systolic blood pressure (SBP) < 120 mm Hg and diastolic blood pressure (DBP) < 80 mm Hg; total cholesterol < 180 mg/dL; nonsmoking; and no diabetes. Major CVD RFs were diabetes, currently smoking, SBP >160 or DBP > 100 mm Hg (or antihypertensives), and total cholesterol > 240 mg/dL (or statins). Thresholds were estimated by age (18-44 and ≥45 years) and sex using linear regression. The association between CVD risk burden and HL was assessed using multivariable logistic regression. Models were adjusted for age, sex, Hispanic/Latino background, center, education, income, alcohol use, body mass index, and noise exposure. RESULTS In the target population, 53.03% were female and 18.81% and 8.52% had all RFs optimal and ≥2 major RFs, respectively. Elevated BP (SBP 120-139 mm Hg or DBP 80-89 mm Hg) was associated with HL in females < 45 years (odds ratio [OR], 2.18; 95% confidence interval [CI], 1.14-4.16). Diabetes (OR, 1.37; 95% CI, 1.01-1.84) and tobacco smoking (OR, 1.44; 95% CI, 1.03-2.01) were associated with HL in females ≥ 45 years. The odds of HL were higher for females ≥ 45 years with ≥2 RFs versus those with all RFs optimal (OR, 1.99; 95% CI, 1.12-3.53). Elevated BP (SBP 140-159 mm Hg or DBP 90-99 mm Hg), but not aggregate risk burden, was associated with HL in males ≥ 45 years (OR, 1.49; 95% CI, 1.02-2.19). No relationships with major CVD RFs were significant in males < 45 years. CONCLUSIONS HL is associated with elevated BP in females < 45 years, with diabetes and hypertension in males ≥ 45 years, and with diabetes, smoking, and having ≥2 major CVD RFs in females ≥ 45 years. Future studies are needed to examine if these factors are associated with incident HL.
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Affiliation(s)
- Rachael R Baiduc
- Department of Speech, Language, and Hearing Sciences, University of Colorado Boulder, Boulder, Colorado
| | - Brittany Bogle
- Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - Franklyn Gonzalez Ii
- Department of Biostatistics, Collaborative Studies Coordinating Center, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - Elizabeth Dinces
- Department of Otorhinolaryngology - Head and Neck Surgery, Montefiore Medical Center, University Hospital for Albert Einstein College of Medicine, Bronx, New York
| | - David J Lee
- Department of Public Health Sciences, University of Miami Miller School of Medicine, Miami, Florida
| | - Martha L Daviglus
- Institute for Minority Health Research, University of Illinois College of Medicine, Chicago, Illinois
| | - Sumitrajit Dhar
- Roxelyn and Richard Pepper Department of Communication Sciences and Disorders, Knowles Hearing Center, Northwestern University, Evanston, Illinois
| | - Jianwen Cai
- Department of Biostatistics, Collaborative Studies Coordinating Center, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
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Baiduc RR, Sun JW, Spankovich C, Vance EA. Tobacco, but Neither Cannabis Smoking Nor Co-Drug Use, Is Associated With Hearing Loss in the National Health and Nutrition Examination Survey, 2011 to 2012 and 2015 to 2016. Ear Hear 2022; 43:1582-1592. [PMID: 35383601 DOI: 10.1097/aud.0000000000001219] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
INTRODUCTION A relationship between tobacco smoking and hearing loss has been reported; associations with cannabis smoking are unknown. In this cross-sectional population-based study, we examined relationships between hearing loss and smoking (tobacco, cannabis, or co-drug use). METHODS We explored the relationship between hearing loss and smoking among 2705 participants [mean age = 39.41 (SE: 0.36) years] in the National Health and Nutrition Examination Survey (2011 to 12; 2015 to 16). Smoking status was obtained via questionnaire; four mutually exclusive groups were defined: nonsmokers, current regular cannabis smokers, current regular tobacco smokers, and co-drug users. Hearing sensitivity (0.5 to 8 kHz) was assessed, and two puretone averages (PTAs) computed: low- (PTA 0.5,1,2 ) and high-frequency (PTA 3,4,6,8 ). We defined hearing loss as threshold >15 dB HL. Multivariable logistic regression was used to examine sex-specific associations between smoking and hearing loss in the poorer ear (selected based on PTA 0.5,1,2 ) adjusting for age, sex, race/ethnicity, hypertension, diabetes, education, and noise exposure with sample weights applied. RESULTS In the age-sex adjusted model, tobacco smokers had increased odds of low- and high-frequency hearing loss compared with non-smokers [odds ratio (OR) = 1.58, 95% confidence ratio (CI): 1.05 to 2.37 and OR = 1.97, 95% CI: 1.58 to 2.45, respectively]. Co-drug users also had greater odds of low- and high-frequency hearing loss [OR = 2.07, 95% CI: 1.10 to 3.91 and OR = 2.24, 95% CI: 1.27 to 3.96, respectively]. In the fully adjusted multivariable model, compared with non-smokers, tobacco smokers had greater odds of high-frequency hearing loss [multivariable adjusted odds ratio = 1.64, 95% CI: 1.28-2.09]. However, in the fully adjusted model, there were no statistically significant relationships between hearing loss (PTA 0.5,1,2 or PTA 3,4,6,8 ) and cannabis smoking or co-drug use. DISCUSSION Cannabis smoking without concomitant tobacco consumption is not associated with hearing loss. However, sole use of cannabis was relatively rare and the prevalence of hearing loss in this population was low, limiting generalizability of the results. This study suggests that tobacco smoking may be a risk factor for hearing loss but does not support an association between hearing loss and cannabis smoking. More definitive evidence could be derived using physiological measures of auditory function in smokers and from longitudinal studies.
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Affiliation(s)
- Rachael R Baiduc
- Department of Speech, Language, and Hearing Sciences, University of Colorado Boulder, Colorado, USA
| | - Joshua W Sun
- Department of Applied Mathematics, University of Colorado Boulder, Boulder, Colorado, USA
| | - Christopher Spankovich
- Department of Otolaryngology-Head and Neck Surgery Jackson, University of Mississippi Medical Center, Mississippi, USA
| | - Eric A Vance
- Department of Applied Mathematics, University of Colorado Boulder, Boulder, Colorado, USA
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Sequí-Canet JM, Sequí-Sabater JM, Marco-Sabater A, Corpas-Burgos F, Collar del Castillo JI, Orta-Sibú N. Maternal factors associated with smoking during gestation and consequences in newborns: Results of an 18-year study. J Clin Transl Res 2022; 8:6-19. [PMID: 35097236 PMCID: PMC8791242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Revised: 11/06/2021] [Accepted: 11/12/2021] [Indexed: 10/25/2022] Open
Abstract
BACKGROUND Tobacco use is one of the most important causes of obstetric and perinatal pathologies. Its frequency during pregnancy is high and could be related to various socioeconomic and cultural characteristics of the mothers. AIM The aim of this study is to determine the trend and prevalence of smoking in pregnant mothers in our area over the years and the socio-cultural or obstetric factors associated with smoking as well as the repercussions on the newborns related to its consumption. METHODS Retrospective study of 18,959 mothers of healthy newborns in the maternity ward of the regional hospital during the years 2002-2019. The variable under study was maternal smoking during pregnancy compared with various maternal, obstetric, and perinatal factors. RESULTS A mean percentage of 20.4% of the mothers smoked, with significantly decreasing percentages over the years. There was a significant association between smoking and mothers' age, origin, level of education, the occurrence of previous abortions, parity, type of breastfeeding at discharge, type of delivery, low birth weight, and need for neonatal resuscitation. CONCLUSIONS This defines a profile of pregnant smokers on whom it is important to act: young, Spanish, with a low level of education, multiparous, and with previous miscarriages. Its repercussions are also evident with a lower birth weight in newborns. Knowledge of these factors will make it possible to design more effective intervention strategies to reduce smoking during pregnancy. RELEVANCE FOR PATIENTS Any effort that reduces smoking habits can improve the health status of mothers and newborns and the first step is to know who are risk pregnants.
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Affiliation(s)
- Jose Miguel Sequí-Canet
- 1Department of Paediatrics, University Hospital “Francisco de Borja”, Gandía, Spain,
Corresponding author: Jose Miguel Sequí-Canet Department of Paediatrics, University Hospital “Francisco de Borja”, Av. de la Medicina 646702-Gandia, Spain. Tel: +34 962849732
| | | | - Ana Marco-Sabater
- 1Department of Paediatrics, University Hospital “Francisco de Borja”, Gandía, Spain
| | - Francisca Corpas-Burgos
- 3Department of Statistics, Fundación para el Fomento de la Investigación Sanitaria y Biomédica de la Comunitat Valenciana, Área de Desigualdades en Salud, Spain
| | | | - Nelson Orta-Sibú
- 1Department of Paediatrics, University Hospital “Francisco de Borja”, Gandía, Spain
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Zhou X, Gao Y, Hu Y, Ma X. Melatonin protects cochlear hair cells from nicotine-induced injury through inhibiting apoptosis, inflammation, oxidative stress and endoplasmic reticulum stress. Basic Clin Pharmacol Toxicol 2021; 129:308-318. [PMID: 34254721 DOI: 10.1111/bcpt.13638] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Revised: 07/07/2021] [Accepted: 07/09/2021] [Indexed: 12/23/2022]
Abstract
Hearing loss positively links with cigarette smoking. However, the involved mechanism and treatment strategies are largely unrevealed. This study aimed to investigate the damaging effect of nicotine on cochlear hair cells, reveal the underlying mechanism and evaluate the therapeutic effect of melatonin on nicotine-induced injury. The results showed that nicotine induced cytotoxicity of House Ear Institute-Organ of Corti 1 (HEI-OC1) cochlear hair cells in a dose-dependent manner (0, 2.5, 5, 10, 20, 40 and 80 μM). Functional investigations showed that nicotine (10 μM) stimulation dramatically promoted apoptosis, inflammatory response, oxidative stress and endoplasmic reticulum stress in HEI-OC1 cells. Moreover, melatonin treatment dose-dependently alleviated the nicotine-induced cytotoxicity in HEI-OC1 cells (0, 10 25, 50 and 100 μM). Further investigation showed that melatonin (100 μM) effectively attenuated the nicotine-induced apoptosis, inflammation, oxidative stress and endoplasmic reticulum stress in HEI-OC1 cells. Collectively, we demonstrated that nicotine induced apoptosis, inflammation, oxidative stress and endoplasmic reticulum stress of cochlear hair cells in an in vitro cell model. Melatonin showed protective effect on these aspects, suggesting that melatonin may be a potential agent for treating smoking-induced hearing loss.
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Affiliation(s)
- Xinjia Zhou
- Department of Otolaryngology Head and Neck Surgery, Shengjing Hospital of China Medical University, Shenyang, China
| | - Yuan Gao
- Department of Pulmonary and Critical Care Medicine, Shengjing Hospital of China Medical University, Shenyang, China
| | - Yue Hu
- Department of Otolaryngology Head and Neck Surgery, Shengjing Hospital of China Medical University, Shenyang, China
| | - Xiulan Ma
- Department of Otolaryngology Head and Neck Surgery, Shengjing Hospital of China Medical University, Shenyang, China
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Zhao Y, Liang Y, Pan C, Tang X, Sun Y, Xu C, Sun J, Sun J. Nicotine induced ototoxicity in rat cochlear organotypic cultures. Transl Neurosci 2021; 12:407-414. [PMID: 34745657 PMCID: PMC8549682 DOI: 10.1515/tnsci-2020-0191] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 10/04/2021] [Accepted: 10/07/2021] [Indexed: 01/10/2023] Open
Abstract
Epidemiological evidence has shown that smoking is associated with an increased risk of hearing loss. However, the underlying mechanisms regarding the impact of nicotine on the cochlea remain unclear. This study aimed to investigate the cytotoxic effects of nicotine on cochlear cells using cultured cochlear basilar membranes. Cochlear basilar membranes were isolated from newborn rats, cultured, and treated with 1–100 ng/mL nicotine for 48 h. Cuticular plates and stereocilia bundle staining were used to evaluate hair cell (HC) loss. Spiral ganglion neuron and acoustic nerve fiber staining were assessed to evaluate cochlear neural injury. Scanning electron microscopy and transmission electron microscopy imaging were employed to examine cochlear ultrastructural changes. Our results showed that compared to spiral ganglia and nerve fibers, HCs are more susceptible to nicotine-induced toxicity. HC loss was more severe in the basal turn than in the middle and apical turns, while nerve fibers and spiral ganglion cells were morphologically maintained. Ultrastructural changes revealed disordered and damaged stereocilia, swelling and decreased mitochondrial density, swelling, and degranulation of the endoplasmic reticulum. Our results suggest that nicotine causes HCs’ degeneration and loss and may have implications for smoking-related hearing loss.
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Affiliation(s)
- Yi Zhao
- Department of Otorhinolaryngology-Head and Neck Surgery, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, 230001, People's Republic of China
| | - Yue Liang
- Department of Otorhinolaryngology-Head and Neck Surgery, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, 230001, People's Republic of China
| | - Chunchen Pan
- Department of Otorhinolaryngology-Head and Neck Surgery, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, 230001, People's Republic of China
| | - Xiaomin Tang
- Department of Otorhinolaryngology-Head and Neck Surgery, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, 230001, People's Republic of China
| | - Yuxuan Sun
- Department of Otorhinolaryngology-Head and Neck Surgery, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, 230001, People's Republic of China
| | - Chenyu Xu
- Department of Otorhinolaryngology-Head and Neck Surgery, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, 230001, People's Republic of China
| | - Jiaqiang Sun
- Department of Otorhinolaryngology-Head and Neck Surgery, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, 230001, People's Republic of China
| | - Jingwu Sun
- Department of Otorhinolaryngology-Head and Neck Surgery, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, 230001, People's Republic of China
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Patel S, Wooles N, Martin T. A systematic review of the impact of cigarettes and electronic cigarettes in otology. J Laryngol Otol 2020; 134:1-6. [PMID: 33272335 DOI: 10.1017/s0022215120002315] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
BACKGROUND The detrimental systemic effects of cigarette smoking are well established. Though less pronounced in the field of otology, they are proposed to contribute to the global burden of unaddressed hearing loss. Recently, in efforts to stop smoking, individuals have used electronic cigarettes of which the long-term safety data are largely unknown. This study aimed to conduct a systematic review of cigarette smoking and electronic cigarette effects in the field of otology. METHOD Relevant articles were identified by a National Institute for Health and Care Excellence healthcare database literature search and by scanning the references of relevant articles and reviews. RESULTS A total of 473 articles were identified, with 43 articles included in the review after trials were excluded. CONCLUSION Cigarette smoking is associated with recurrent otitis media, otitis media with effusion and sensorineural hearing loss in children exposed to second-hand smoke. In adults, it is associated with active and aggressive chronic suppurative otitis media, worse tympanoplasty success rates, increased post-operative complications and sensorineural hearing loss that is more pronounced in the long term and at high frequencies. The effects of e-cigarettes in otology are largely unknown.
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Affiliation(s)
- S Patel
- Department of Otolaryngology and Head and Neck Surgery, Worcestershire Acute Hospitals NHS Trust, Worcester, UK
| | - N Wooles
- Department of Otolaryngology and Head and Neck Surgery, Worcestershire Acute Hospitals NHS Trust, Worcester, UK
| | - T Martin
- Department of Otolaryngology and Head and Neck Surgery, Worcestershire Acute Hospitals NHS Trust, Worcester, UK
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Baiduc RR, Mullervy S, Berry CM, Brumbach S, Prabhu S, Vance EA. An Exploratory Study of Early Auditory Evoked Potentials in Cannabis Smokers. Am J Audiol 2020; 29:303-317. [PMID: 32510971 DOI: 10.1044/2020_aja-19-00065] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Purpose Cannabis is widely used for medicinal and recreational purposes. Studies have evaluated its health benefits and consequences, although there is limited work on its effects on the auditory system. In this exploratory study, we evaluate the effects of cannabis smoking on early auditory evoked potentials. Method We investigated auditory brainstem response (ABR) and electrocochleography waveforms in 18 cannabis smokers (44% women, 54% men; M age = 23.06 years, range: 21-28 years) and 19 nonsmoker controls (63% women, 37% men; M age = 23.74 years, range: 21-33 years). Threshold ABRs were recorded using rarefaction clicks at a rate of 17.7/s from 80 dB nHL to Wave V threshold. Resulting amplitudes and latencies for Waves I, III, and V were compared via independent-samples t tests. Electrocochleograms obtained with 90 dB nHL (7.1/s) alternating clicks were assessed for summating and compound action potentials, which were compared between groups using independent-samples t tests. Results ABR Wave I amplitudes were significantly lower in smokers (M = 0.14 μV, SD = 0.11) compared to nonsmokers (M = 0.21 μV, SD = 0.10, p = .039) at 80 dB nHL. Wave V latencies were significantly delayed in smokers at 80 dB nHL. Wave I and III latencies did not differ significantly between the two groups. Summating potential/compound action potential ratios were significantly elevated in smokers (M = 0.30, SD = 0.04) versus nonsmokers (M = 0.21, SD = 0.05, p = .042). Conclusion We identified significant differences in electrophysiological outcomes between cannabis smokers and nonsmokers. Cannabis smoking may have a subtle neurotoxic effect on the auditory system. Larger confirmatory studies are warranted.
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Affiliation(s)
- Rachael R. Baiduc
- Department of Speech, Language, and Hearing Sciences, University of Colorado Boulder
| | - Sarah Mullervy
- Department of Speech, Language, and Hearing Sciences, University of Colorado Boulder
| | - Caitlin M. Berry
- Department of Applied Mathematics, University of Colorado Boulder
| | - Samantha Brumbach
- Department of Speech, Language, and Hearing Sciences, University of Colorado Boulder
| | - Shashidhar Prabhu
- Department of Speech, Language, and Hearing Sciences, University of Colorado Boulder
| | - Eric A. Vance
- Department of Applied Mathematics, University of Colorado Boulder
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Brumbach S, Goodman SS, Baiduc RR. Behavioral Hearing Thresholds and Distortion Product Otoacoustic Emissions in Cannabis Smokers. JOURNAL OF SPEECH, LANGUAGE, AND HEARING RESEARCH : JSLHR 2019; 62:3500-3515. [PMID: 31525116 DOI: 10.1044/2019_jslhr-h-18-0361] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Purpose Cannabis is a widely used drug both medically and recreationally. The aim of this study was to determine if cannabis smoking is associated with changes in auditory function, as measured by behavioral hearing thresholds and/or distortion product otoacoustic emissions (DPOAEs). Method We investigated hearing thresholds and 2f1-f2 DPOAEs in 20 cannabis smokers and 20 nonsmokers between 18 and 28 years old. Behavioral thresholds were obtained from 0.25 to 16 kHz. DPOAEs were measured using discrete tones between f2 of 0.5 and 19.03 kHz using an f2/f1 ratio of 1.22 and L1/L2 = 65/55 dB SPL. Thresholds and DPOAE amplitudes were compared between groups using linear mixed-effects models with sex and frequency as predictors. Results Behavioral thresholds in smokers did not differ significantly between smokers and nonsmokers (all ps > .05). Although not significant, long-term smokers exhibited poorer thresholds than short-term smokers and nonsmokers. Smokers generally exhibited lower DPOAE amplitudes than nonsmokers, although the differences were not significant. Male smokers had significantly poorer DPOAE amplitudes than male nonsmokers in the low frequencies (f2 ≤ 2 kHz; p = .0245). Conclusion Results indicate that smoking cannabis may negatively alter the function of outer hair cells in young men. This subtle cochleopathology is evident in the absence of measurable differences in behavioral hearing thresholds between cannabis smokers and nonsmokers.
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Affiliation(s)
- Samantha Brumbach
- Department of Speech, Language, and Hearing Sciences, University of Colorado Boulder
| | - Shawn S Goodman
- Department of Communication Sciences and Disorders, The University of Iowa, Iowa City
| | - Rachael R Baiduc
- Department of Speech, Language, and Hearing Sciences, University of Colorado Boulder
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Habybabady RH, Mohammadi M, Mortazavi SB, Khavanin A, Mirzaei R, Malvajerdi MS. The effect of simultaneous exposure to cigarette smoke and noise on distortion product otoacoustic emissions in rats. Toxicol Ind Health 2019; 35:349-357. [PMID: 30971172 DOI: 10.1177/0748233719839865] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Cigarette smoking is a possible risk factor for hearing loss. However, the impact of simultaneous exposure to noise and smoke on hearing has remained controversial. This study investigated the combined effect of exposure to cigarette smoking and noise on hearing loss. Three groups of male Wistar rats (275 ± 25 g) were subjected to white noise (102 ± 0.5 dB), cigarette smoking (20 cigarettes), and both cigarette smoking and noise for 8 h and 10 days inside the exposure chamber. The control group was exposed to neither noise nor smoke. Distortion product otoacoustic emissions (DPOAE) were measured before any intervention, and it was repeated 1, 7, and 21 days after the last exposure. One-day postexposure to noise, cigarette smoking, and both cigarette smoking and noise, the mean of DPOAE amplitudes decreased significantly ( p < 0.05) between, respectively, 5.7-30.7, 1.5-7.5, and 5.2-32.6 dB within the frequency range of 4620-9960. Temporal DPOAE change in rats exposed to noise or both cigarette smoking and noise was not significantly different ( p > 0.05). DPOAE amplitudes returned to the baseline values in the group subjected to smoking 21 days postexposure. The most permanent change was observed in rats exposed to both cigarette smoking and noise. Accordingly, simultaneous subacute exposure to noise and cigarette smoking increases the effect of noise on permanent hearing loss. Therefore, smoking workers exposed to noise might be at a greater risk of developing hearing loss, and it is recommended that authorities in charge take note of this evidence.
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Affiliation(s)
- Raheleh Hashemi Habybabady
- 1 Department of Occupational Health Engineering, Health Promotion Research Center, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Mahdi Mohammadi
- 2 Department of Biostatistics and Epidemiology, Health Promotion Research Center, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Seyed Bagher Mortazavi
- 3 Department of Occupational Health Engineering, School of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Ali Khavanin
- 3 Department of Occupational Health Engineering, School of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Ramazan Mirzaei
- 4 Department of Environmental and Occupational Health Engineering, School of Health, Social determinants of Health Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mehdi Sadeghi Malvajerdi
- 1 Department of Occupational Health Engineering, Health Promotion Research Center, Zahedan University of Medical Sciences, Zahedan, Iran
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Yoo MH, Rah YC, Park S, Koun S, Im GJ, Chae SW, Jung HH, Choi J. Impact of Nicotine Exposure on Hair Cell Toxicity and Embryotoxicity During Zebrafish Development. Clin Exp Otorhinolaryngol 2018; 11:109-117. [PMID: 29307133 PMCID: PMC5951065 DOI: 10.21053/ceo.2017.00857] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2017] [Revised: 10/19/2017] [Accepted: 11/10/2017] [Indexed: 11/22/2022] Open
Abstract
Objectives Nicotine has various adverse effects including negative impacts associated with maternal exposure. In the current study, we examined nicotine-induced damage of hair cells and embryotoxicity during zebrafish development. Methods Zebrafish embryos were exposed to nicotine at several concentrations (5, 10, 20, and 40 μM) and embryotoxicity were evaluated at 72 hours, including hatching rate, mortality, teratogenicity rate, and heart rate. Hair cells within the supraorbital (SO1 and SO2), otic (O1), and occipital (OC1) neuromasts were identified at 120 hours. Apoptosis and mitochondrial damage of hair cells were analyzed using TUNEL (terminal deoxynucleotidyl transferase-mediated dUTP-biotin nick end labeling) and DASPEI (2-[4-(dimethylamino)styryl]-N-ethylpyridinium iodide) assays, respectively, and changes of ultrastructure were observed by scanning electron microscopy. Results The control group without nicotine appeared normal with overall mortality and teratogenicity rate <5%. The hatching rate and mortality rate was not significantly different according to nicotine concentration (n=400 each). The abnormal morphology rate (n=400) increased and heart rate (n=150) decreased with increasing nicotine concentration (P<0.05). Nicotine-induced hair cell damage significantly increased as nicotine concentration increased. A significantly greater number of TUNEL-positive cells (P<0.01) and markedly smaller DASPEI area (P<0.01) were shown as nicotine concentration increased. Conclusion The current results suggest that nicotine induces dose-dependent hair cell toxicity in embryos by promoting apoptosis and mitochondrial and structural damage.
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Affiliation(s)
- Myung Hoon Yoo
- Department of Otorhinolaryngology-Head and Neck Surgery, Kyungpook National University School of Medicine, Daegu, Korea
| | - Yoon Chan Rah
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Seoul, Korea
| | - Saemi Park
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Seoul, Korea
| | - Soonil Koun
- Biomedical Research Center, Korea University Ansan Hospital, Ansan, Korea
| | - Gi Jung Im
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Seoul, Korea
| | - Sung Won Chae
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Seoul, Korea
| | - Hak Hyun Jung
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Seoul, Korea
| | - June Choi
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Seoul, Korea
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Eltony SA, Ali SS. Histological study on the effect of nicotine on adult male guinea pig thin skin. Anat Cell Biol 2017; 50:187-199. [PMID: 29043097 PMCID: PMC5639173 DOI: 10.5115/acb.2017.50.3.187] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2017] [Revised: 04/14/2017] [Accepted: 05/16/2017] [Indexed: 12/12/2022] Open
Abstract
Tobacco smoking has been identified as an important factor in premature skin aging to detect the histological changes occurred in adult male guinea pig thin skin under the influence of low and high doses of nicotine; which constitutes approximately 0.6%–3.0% of the dry weight of tobacco. Fifteen adult male pigmented guinea pigs were equally divided into three groups: group I, control; group IIA, low dose nicotine treated; 3 mg/kg subcutaneously for 4 weeks; and group IIB, high dose nicotine treated; 6 mg/kg subcutaneously for 4 weeks. Specimens from the back thin skin were processed for light and electron microscopy. Nicotine administration revealed flattened dermo-epidermal junction and reduced rete ridges formation. Collagen bundles were disorganized with increased spaces between them. A reduction in the amount of elastic fibers in the dermis were also observed compared to group I. Ultrastructurally, keratinocytes had hyperchromatic nuclei, intracytoplasmic vacuoles, disruption of desmosomal junctions, irregular tonofilaments distribution, and increased inter-cellular spaces. These changes were more pronounced with high dose nicotine administration. The epidermal thickness was reduced in low dose nicotine administration. But, high dose nicotine administration revealed increased epidermal thickness compared to the control group. Nicotine induced structural changes of adult male guinea pig thin skin. These changes were more pronounced with high dose nicotine administration.
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Affiliation(s)
- Sohair A Eltony
- Department of Histology and Cell Biology, Faculty of Medicine, Assiut University, Assiut, Egypt
| | - Safaa S Ali
- Department of Histology and Cell Biology, Faculty of Medicine, Assiut University, Assiut, Egypt
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Honeth L, Ström P, Ploner A, Bagger-Sjöbäck D, Rosenhall U, Nyrén O. Cigarette- and snus-modified association between unprotected exposure to noise from hunting rifle caliber weapons and high frequency hearing loss. A cross-sectional study among swedish hunters. Noise Health 2017; 18:382-390. [PMID: 27991471 PMCID: PMC5227020 DOI: 10.4103/1463-1741.195796] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Aim: To investigate in this cross-sectional study among Swedish hunters if tobacco use modifies the previously observed association, expressed as prevalence ratio (PR), between unprotected exposure to impulse noise from hunting rifle caliber (HRC) weapons and high-frequency hearing impairment (HFHI). Settings and Design: A nationwide cross-sectional epidemiologic study was conducted among Swedish sport hunters in 2012. Materials and Methods: The study was Internet-based and consisted of a questionnaire and an Internet-based audiometry test. Results: In all, 202 hunters completed a questionnaire regarding the hearing test. Associations were modeled using Poisson regression. Current, daily use of tobacco was reported by 61 hunters (19 used cigarettes, 47 moist snuff, and 5 both). Tobacco users tended to be younger, fire more shots with HRC weapons, and report more hunting days. Their adjusted PR (1–6 unprotected HRC shots versus 0) was 3.2 (1.4–6.7), P = 0.01. Among the nonusers of tobacco, the corresponding PR was 1.3 (0.9–1.8), P = 0.18. P value for the interaction was 0.01. The importance of ear protection could not be quantified among hunters with HRC weapons because our data suggested that the HFHI outcome had led to changes in the use of such protection. Among hunters using weapons with less sound energy, however, no or sporadic use of hearing protection was linked to a 60% higher prevalence of HFHI, relative to habitual use. Conclusion: Tobacco use modifies the association between exposure to unprotected impulse noise from HRC weapons and the probability of having HFHI among susceptible hunters. The mechanisms remain to be clarified, but because the effect modification was apparent also among the users of smokeless tobacco, combustion products may not be critical for this effect.
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Affiliation(s)
- Louise Honeth
- Department of Clinical Science, Intervention and Technology, Division of Ear, Nose and Throat Diseases, Karolinska Institutet, Stockholm; ENT-center, Cityakuten, Sweden
| | - Peter Ström
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
| | - Alexander Ploner
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
| | - Dan Bagger-Sjöbäck
- Department of Clinical Science, Intervention and Technology, Division of Ear, Nose and Throat Diseases, Karolinska Institutet, Stockholm, Sweden
| | - Ulf Rosenhall
- Department of Clinical Science, Intervention and Technology, Division of Ear, Nose and Throat Diseases, Karolinska Institutet, Stockholm; Department of Audiology and Neurotology, Karolinska University Hospital, Solna, Sweden
| | - Olof Nyrén
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
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Effects of Exposure to Cigarette Smoke on Distortion-Product Otoacoustic Emissions in Rats. HEALTH SCOPE 2016. [DOI: 10.5812/jhealthscope.15175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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