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He Y, Wang Z, Zhang H, Lai X, Liu M, Yang L, Zheng Y, He M, Kong W, Zhang X. Polygenic Risk Score Modifies the Association of HbA1c With Hearing Loss in Middle-Aged and Older Chinese Individuals: The Dongfeng-Tongji Cohort. Diabetes Care 2024; 47:1186-1193. [PMID: 38728232 PMCID: PMC11208759 DOI: 10.2337/dc23-2341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Accepted: 04/14/2024] [Indexed: 05/12/2024]
Abstract
OBJECTIVE Evidence regarding the modifying effect of the polygenic risk score (PRS) on the associations between glycemic traits and hearing loss (HL) was lacking. We aimed to examine whether these associations can be influenced by genetic susceptibility. RESEARCH DESIGN AND METHODS This cross-sectional study included 13,275 participants aged 64.9 years from the Dongfeng-Tongji cohort. HL was defined according to a pure tone average >25 dB in the better ear and further classified by severity. Prediabetes and type 2 diabetes (T2D) were defined based on the 2013 criteria from the American Diabetes Association. A PRS was derived from 37 single nucleotide polymorphisms associated with HL. Multivariable logistic regression models were fitted to estimate the associations of PRS and glycemic traits with HL and its severity. RESULTS Elevated fasting plasma glucose (FPG), glycosylated hemoglobin (HbA1c), and T2D were positively associated with higher HL risks and its severity, with odds ratios (ORs) ranging from 1.04 (95% CI 1.00, 1.08) to 1.25 (95% CI 1.06, 1.46). We also found significant interaction between HbA1c and PRS on risks of overall HL and its severity (P for multiplicative interaction <0.05), and the effects of HbA1c on HL risks were significant only in the group with high PRS. Additionally, compared with normoglycemia in the group with low PRS, T2D was associated with an OR of up to 2.00 and 2.40 for overall HL and moderate to severe HL, respectively, in the group with high PRS (P for additive interaction <0.05). CONCLUSIONS PRS modifies the association of HbA1c with HL prevalence among middle-aged and older Chinese individuals.
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Affiliation(s)
- Yaling He
- Department of Occupational and Environmental Health, Ministry of Education Key Laboratory of Environment and Health, and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Zhichao Wang
- Department of Otorhinolaryngology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Haiqing Zhang
- Department of Occupational and Environmental Health, Ministry of Education Key Laboratory of Environment and Health, and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Xuefeng Lai
- Department of Occupational and Environmental Health, Ministry of Education Key Laboratory of Environment and Health, and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Miao Liu
- Department of Occupational and Environmental Health, Ministry of Education Key Laboratory of Environment and Health, and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Liangle Yang
- Department of Occupational and Environmental Health, Ministry of Education Key Laboratory of Environment and Health, and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Yiquan Zheng
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan, China
| | - Meian He
- Department of Occupational and Environmental Health, Ministry of Education Key Laboratory of Environment and Health, and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Weijia Kong
- Department of Otorhinolaryngology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Xiaomin Zhang
- Department of Occupational and Environmental Health, Ministry of Education Key Laboratory of Environment and Health, and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
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2
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Zhang Z. Association between sarcopenia and hearing impairment in middle-aged and elderly people in China: a prospective cohort study. Sci Rep 2024; 14:6061. [PMID: 38480872 PMCID: PMC10937624 DOI: 10.1038/s41598-024-56850-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Accepted: 03/12/2024] [Indexed: 03/17/2024] Open
Abstract
This study used longitudinal data from CHARLS 2011-2018 for cross-sectional and longitudinal analyses to investigate the relationship between sarcopenia and hearing impairment in middle-aged and elderly adults in China. The study selected 9723 participants aged 45 years and older from CHARLS 2011 and followed up in 2015 and 2018. Binary logistic regression and cox proportional risk regression models were used for testing. The results of the study showed that in the cross-sectional analysis, probable sarcopenia was significantly associated with hearing impairment compared with the group without sarcopenia [OR (95% CI) 0.342 (1.187, 1.669), p < 0.001], but sarcopenia was not significantly associated with hearing impairment. In the longitudinal analysis, middle-aged and elderly adults with sarcopenia [HR (95% CI) 0.354 (1.043, 1.945), p < 0.01] were more likely to have hearing impairment than those with probable sarcopenia and without sarcopenia. Probable sarcopenia was strongly associated with hearing impairment in middle-aged and elderly adults, whereas sarcopenia was a strong predictor of hearing impairment over the next 7 years. The results of this study emphasize the urgent need for measures to address sarcopenia in order to prevent and delay the decline in hearing function.
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Affiliation(s)
- Zeqi Zhang
- Management School, University of Liverpool, Liverpool, L69 3BX, UK.
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3
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Sahni D, Bhagat S, Bhatia L, Singh P, Chawla S, Kaur A. Association Between Metabolic Syndrome and Hearing Impairment: a Study on 200 Subjects. Indian J Otolaryngol Head Neck Surg 2024; 76:262-267. [PMID: 38440660 PMCID: PMC10909006 DOI: 10.1007/s12070-023-04138-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Accepted: 08/10/2023] [Indexed: 03/06/2024] Open
Abstract
The metabolic syndrome (MS) is a cluster of conditions that occur. togehther, increase risk of heart disease, storke, type 2 diabetes mellitus and hypertension as a possible outcome. The previous research has shown a link between hearing loss and being overweight, diabetic, or suffering from heart disease. However, research on the possible link between hearing loss and metabolic syndrome is limited. Hearing loss due to metabolic syndrome was evaluated in the present investigation. Two hundred individuals with metabolic syndrome were included. All the patients were evaluated on three types of audiometry (pure tone, impedence, and DPOAE).Anthropometric data, blood pressure, blood sugar, and lipid profiles, were all collected from each patient. We also asked about their smoking and drinking habits in the past. SPSS v. 22.0 was used to conduct the statistical analysis. Overall, SNHL affected 58.5% of patients. Patients having moderate hearing loss were the largest demographic group (40%), followed by those with mild hearing loss (15% ). Severe hearing loss only occurred in 3.5% of patients. Hearing loss was shown to be more prevalent in patients with more than three components of metabolic syndrome. Significant associations were found between hearing impairment and metabolic risk factors as waist circumference, fasting blood sugar, serum high-density lipoprotein, serum triglycerides, and systolic and diastolic blood pressure. Hearing loss was only marginally connected to smoking and excessive drinking.
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Affiliation(s)
- Dimple Sahni
- Government Medical College and Rajindra Hospital, Patiala, Punjab 147001 India
| | - Sanjeev Bhagat
- Government Medical College and Rajindra Hospital, Patiala, Punjab 147001 India
| | - Lovleen Bhatia
- Government Medical College and Rajindra Hospital, Patiala, Punjab 147001 India
| | - Parvinder Singh
- Government Medical College and Rajindra Hospital, Patiala, Punjab 147001 India
| | - Sagar Chawla
- Government Medical College and Rajindra Hospital, Patiala, Punjab 147001 India
| | - Amandeep Kaur
- Government Medical College and Rajindra Hospital, Patiala, Punjab 147001 India
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Baiduc RR, Sun JW, Berry CM, Anderson M, Vance EA. Relationship of cardiovascular disease risk and hearing loss in a clinical population. Sci Rep 2023; 13:1642. [PMID: 36717643 PMCID: PMC9886989 DOI: 10.1038/s41598-023-28599-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Accepted: 01/20/2023] [Indexed: 02/01/2023] Open
Abstract
Hearing loss has been associated with individual cardiovascular disease (CVD) risk factors and, to a lesser extent, CVD risk metrics. However, these relationships are understudied in clinical populations. We conducted a retrospective study of electronic health records to evaluate the relationship between hearing loss and CVD risk burden. Hearing loss was defined as puretone average (PTA0.5,1,2,4) > 20 dB hearing level (HL). Optimal CVD risk was defined as nondiabetic, nonsmoking, systolic blood pressure (SBP) < 120 and diastolic (D)BP < 80 mm Hg, and total cholesterol < 180 mg/dL. Major CVD risk factors were diabetes, smoking, hypertension, and total cholesterol ≥ 240 mg/dL or statin use. We identified 6332 patients (mean age = 62.96 years; 45.5% male); 64.0% had hearing loss. Sex-stratified logistic regression adjusted for age, noise exposure, hearing aid use, and body mass index examined associations between hearing loss and CVD risk. For males, diabetes, hypertension, smoking, and ≥ 2 major CVD risk factors were associated with hearing loss. For females, diabetes, smoking, and ≥ 2 major CVD risk factors were significant risk factors. Compared to those with no CVD risk factors, there is a higher likelihood of hearing loss in patients with ≥ 2 major CVD risk factors. Future research to better understand sex dependence in the hearing loss-hypertension relationship is indicated.
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Affiliation(s)
- Rachael R Baiduc
- Department of Speech, Language, and Hearing Sciences, University of Colorado Boulder, 2501 Kittredge Loop Drive, 409 UCB, Boulder, CO, 80309, USA.
| | - Joshua W Sun
- Department of Applied Mathematics, University of Colorado Boulder, Boulder, CO, 80309, USA
| | - Caitlin M Berry
- Department of Applied Mathematics, University of Colorado Boulder, Boulder, CO, 80309, USA
| | - Melinda Anderson
- Department of Otolaryngology, University of Colorado School of Medicine, Aurora, CO, USA
| | - Eric A Vance
- Department of Applied Mathematics, University of Colorado Boulder, Boulder, CO, 80309, USA
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Chen HL, Tan CT, Wu CC, Liu TC. Effects of Diet and Lifestyle on Audio-Vestibular Dysfunction in the Elderly: A Literature Review. Nutrients 2022; 14:nu14224720. [PMID: 36432406 PMCID: PMC9698578 DOI: 10.3390/nu14224720] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 10/27/2022] [Accepted: 11/03/2022] [Indexed: 11/09/2022] Open
Abstract
BACKGROUND The world's age-related health concerns continue to rise. Audio-vestibular disorders, such as hearing loss, tinnitus, and vertigo, are common complaints in the elderly and are associated with social and public health burdens. Various preventative measures can ease their impact, including healthy food consumption, nutritional supplementation, and lifestyle modification. We aim to provide a comprehensive summary of current possible strategies for preventing the age-related audio-vestibular dysfunction. METHODS A PubMed, Embase, and Cochrane review databases search was conducted to identify the relationship between diet, lifestyle, and audio-vestibular dysfunction. "Diet", "nutritional supplement", "lifestyle", "exercise", "physical activity", "tinnitus", "vertigo" and "age-related hearing loss" were used as keywords. RESULTS Audio-vestibular dysfunction develops and progresses as a result of age-related inflammation and oxidative stress. Diets with anti-inflammatory and antioxidant effects have been proposed to alleviate this illness. A high-fat diet may induce oxidative stress and low protein intake is associated with hearing discomfort in the elderly. Increased carbohydrate and sugar intake positively correlate with the incidence of audio-vestibular dysfunction, whereas a Mediterranean-style diet can protect against the disease. Antioxidants in the form of vitamins A, C, and E; physical activity; good sleep quality; smoking cessation; moderate alcohol consumption; and avoiding noise exposure are also beneficial. CONCLUSIONS Adequate diet or nutritional interventions with lifestyle modification may protect against developing audio-vestibular dysfunction in elderly individuals.
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Affiliation(s)
- Hsin-Lin Chen
- Department of Surgical Oncology, National Taiwan University Cancer Center Hospital, Taipei 100, Taiwan
- Department of Otolaryngology, National Taiwan University Hospital, Taipei 100, Taiwan
| | - Ching-Ting Tan
- Department of Otolaryngology, National Taiwan University Hospital, Taipei 100, Taiwan
| | - Chen-Chi Wu
- Department of Otolaryngology, National Taiwan University Hospital, Taipei 100, Taiwan
- Department of Medical Research, National Taiwan University Hospital Hsin-Chu Branch, Hsinchu 302, Taiwan
- Department of Medical Genetics, National Taiwan University Hospital, Taipei 100, Taiwan
- Graduate Institute of Clinical Medicine, National Taiwan University College of Medicine, Taipei 100, Taiwan
- Correspondence: (C.-C.W.); (T.-C.L.)
| | - Tien-Chen Liu
- Department of Otolaryngology, National Taiwan University Hospital, Taipei 100, Taiwan
- Correspondence: (C.-C.W.); (T.-C.L.)
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Doostkam A, Mirkhani H, Iravani K, Karbalay-Doust S, Doosti A, Nadimi E, Pirsalami F. Controversial Role of Folic Acid on Diabetic Auditory Neuropathy. ACS Pharmacol Transl Sci 2022; 5:985-992. [PMID: 36268113 PMCID: PMC9578138 DOI: 10.1021/acsptsci.2c00140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Indexed: 11/28/2022]
Abstract
OBJECTIVE Diabetic auditory neuropathy (DAN) is a common complication of diabetes that seriously affects the quality of life in patients. In this study, we investigate the role of folic acid in the treatment of DAN in an experimental rat model. METHODS Thirty-two Sprague-Dawley rats were equally divided into four groups: group 1, normal; group 2, diabetic rats; and groups 3 and 4, diabetic rats treated with folic acid (40 and 80 mg/kg, respectively). We used some tools to investigate the therapeutic effect of folic acid on DAN. We evaluated auditory brain stem response (ABR), estimated the volume and number of spiral ganglion and the volume of stria vascularis and spiral ligament by the stereological method, and measured the blood levels of homocysteine (HCY), malondialdehyde (MDA), and superoxide dismutase (SOD). RESULTS Our study showed that folic acid treatment was not significantly effective in improving structural and functional disorders in DAN, even though its effectiveness in reducing HCY (P < 0.001) and MDA (P < 0.05) as oxidative biomarkers was significant. CONCLUSION Folic acid is not effective in relieving morphological and functional disorders in DAN.
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Affiliation(s)
- Aida Doostkam
- Shiraz
Nephro-Urology Research Center, Shiraz University
of Medical Sciences, Shiraz 7193635899, Iran
| | - Hossein Mirkhani
- Department
of Pharmacology, School of Medicine, Medicinal and Natural Products
Chemistry Research Center, Shiraz University
of Medical Sciences, Shiraz 7134853185, Iran
| | - Kamyar Iravani
- Department
of Otolaryngology, Otolaryngology Research Center, Shiraz University of Medical Sciences, Shiraz 71936-16641, Iran
| | - Saied Karbalay-Doust
- Department
of Anatomy, School of Medicine, Histomorphometry and Stereology Research
Center, Shiraz University of Medical Sciences, Shiraz 7134853185, Iran
| | - Afsaneh Doosti
- Department
of Audiology, School of Rehabilitation Sciences, Rehabilitation Sciences
Research Center, Shiraz University of Medical
Sciences, Shiraz 7194733669, Iran
| | - Elham Nadimi
- Histomorphometry
and Stereology Research Center, Shiraz University
of Medical Sciences, Shiraz 7134853185, Iran
| | - Fatema Pirsalami
- Department
of Pharmacology, School of Medicine, Shiraz
University of Medical Sciences, Shiraz 7134853185, Iran
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Akcay G, Danısman B, Basaranlar G, Guzel P, Derin N, Derin AT. The effect of increase in blood glucose level on hearing loss. Braz J Otorhinolaryngol 2022; 88 Suppl 3:S95-S102. [PMID: 35729043 DOI: 10.1016/j.bjorl.2022.06.003] [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] [Received: 11/17/2021] [Revised: 04/04/2022] [Accepted: 06/05/2022] [Indexed: 11/19/2022] Open
Abstract
OBJECTIVE Previous studies have shown that hearing function is also vulnerable to the effects of diabetes mellitus which can be shown by brainstem auditory evoked potential and distortion product otoacoustic emission recordings. This study aimed to investigate the changes of brainstem auditory evoked potential and distortion product otoacoustic emission in hyperglycemia and whether there is a relationship between reactive oxygen substances production and hearing deterioration in the rat model. METHODS 25 streptozotocin induced diabetic rats were divided into three groups: control, high blood glucose, and diabetes mellitus. Brainstem auditory evoked potential and distortion product otoacoustic emission were recorded, and thiobarbituric acid reactive substances levels were measured in the brainstem tissue. RESULTS At 8 kHz, the latencies of I, II, III, IV, and V brainstem auditory evoked potential waves in high blood glucose and diabetes mellitus groups were elongated, at 16 kHz, only these wave latencies of the diabetes mellitus group were prolonged compared with the control group. A significant decrease was also found in distortion product otoacoustic emission amplitudes at 4, 6, 8, and 10 kHz in the high blood glucose and diabetes mellitus groups compared to the control group. There was a significant increase in thiobarbituric acid reactive substances values due to the increase in blood glucose levels in the high blood glucose and diabetes mellitus groups compared to the control group. CONCLUSION These results suggested that high blood glucose levels may cause hearing impairment not only in the diabetic state but also in the period of hyperglycemia before the onset of manifest diabetes mellitus and reactive oxygen substances may play an important role in the pathophysiology of diabetes mellitus. We suggest that regulating high glucose levels even before the onset of manifest diabetes mellitus may prevent hazardous effects on hearing function. LEVEL OF EVIDENCE Level 3.
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Affiliation(s)
- Guven Akcay
- Hitit University, Faculty of Medicine, Department of Biophysics, Çorum, Turkey
| | - Betul Danısman
- Atatürk University, Faculty of Medicine, Department of Biophysics, Erzurum, Turkey
| | - Goksun Basaranlar
- İzmir Demokrasi University, Vocational School of Health Services, İzmir, Turkey
| | - Pınar Guzel
- Kozan State Hospital, Department of Otolaryngology Head and Neck Surgery, Adana, Turkey
| | - Narin Derin
- Akdeniz University, Faculty of Medicine, Department of Biophysics, Antalya, Turkey.
| | - Alper Tunga Derin
- Akdeniz University, Faculty of Medicine, Department of Otolaryngology Head and Neck Surgery, Antalya, Turkey
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Sex-specific associations between diabetes mellitus and hearing loss in the middle-aged and elderly: a national cohort study of Chinese adults. Endocr Pract 2022; 28:357-363. [PMID: 35033657 DOI: 10.1016/j.eprac.2022.01.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/30/2021] [Revised: 12/22/2021] [Accepted: 01/03/2022] [Indexed: 12/14/2022]
Abstract
OBJECTIVE To examine the association between diabetes and hearing loss and whether the association varied by sex. METHODS This cohort study based on nationally representative data from the China Health and Retirement Longitudinal Study included 16140 Chinese adults aged over 45 years between 2011 and 2018. Diabetes was identified by blood glucose, HbA1c, and a self-reported diagnosis at baseline. The main outcome is self-reported incident hearing loss. Cox proportional hazards regression models were performed to estimate the risk of hearing loss. RESULTS We documented 2388 cases of hearing loss during a median 6.9 years of follow-up. The incidence rate was 29.64 (95% CI 28.07-31.29) per 1000 person-years in women and 25.23 (95% CI 23.77-26.78) per 1000 person-years in men. After adjustment, the HR of hearing loss associated with diabetes was 1.20 (95% CI 1.01-1.42) for women and 0.97 (95% CI 0.78-1.19) for men. Compared with poor control of blood sugar, the OR for hearing loss for women with good glycemic control was reduced from 5.08 (95%CI 1.31-19.66) to 1.26 (95%CI 0.69-2.28), and the corresponding OR for men was 1.65 (95% CI 0.61-4.44) to 0.50 (95%CI 0.18-1.38). CONCLUSIONS In conclusion, we identified a differential effect of sex on hearing loss risk with more pronounced effects for women. Our data suggest that good blood glucose control is helpful to prevent hearing loss.
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Favaretto N. Are hearing and olfaction disorders more common in older patients with diabetes? Are hearing loss and olfactive disfunction a risk factor for progression of functional decline and disability? JOURNAL OF GERONTOLOGY AND GERIATRICS 2021. [DOI: 10.36150/2499-6564-n453] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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10
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Chee J, Kuah D, Loh WS, Loo JHY, Goh X. Diabetes is a risk factor for hearing loss in older adults: Results of a community screening programme. Clin Otolaryngol 2021; 47:146-152. [PMID: 34657393 DOI: 10.1111/coa.13877] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Revised: 09/22/2021] [Accepted: 10/10/2021] [Indexed: 10/20/2022]
Abstract
OBJECTIVES To investigate the association between diabetes mellitus (DM) and the prevalence and severity of hearing loss in a population of community-dwelling older adults in Singapore. MATERIALS AND METHODS This is a retrospective, cross-sectional study of 1787 adults aged 60-100 who had undergone a comprehensive audiological assessment in a community-based audiology clinic. Data extracted included their age, hearing profile, medical history, and comorbidities collected through verbal interview at the point of audiologic assessment. Multivariate linear regression and multivariate logistic regression were performed to investigate the relationship between DM and hearing loss. RESULTS The prevalence of DM in our studied population is 17.9%. After controlling for age, gender, race, hypertension, and hyperlipidaemia status, DM was found to be independently associated with at least moderate hearing loss (adjusted OR 1.3 [95% CI 1.06-1.59], p = .012). This was especially so in the younger (<70) age group (adjusted OR 1.7 [95% CI 1.18-2.44], p = .004). CONCLUSION DM is an independent risk factor for the presence of at least moderate hearing in community-dwelling seniors. Individuals aged <70 with DM should be screened for hearing loss to enable early intervention.
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Affiliation(s)
- Jeremy Chee
- Department of Otolaryngology - Head & Neck Surgery, National University Hospital, Singapore, Singapore
| | - Dexter Kuah
- Department of Otolaryngology - Head & Neck Surgery, National University Hospital, Singapore, Singapore
| | - Woei Shyang Loh
- Department of Otolaryngology - Head & Neck Surgery, National University Hospital, Singapore, Singapore
| | - Jenny Hooi Yin Loo
- Department of Otolaryngology - Head & Neck Surgery, National University Hospital, Singapore, Singapore
| | - Xueying Goh
- Department of Otolaryngology - Head & Neck Surgery, National University Hospital, Singapore, Singapore
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Preimplant Hearing Threshold: An Important Predictor of Hearing Preservation in Cochlear Implantation With Lateral Wall Electrodes. Otol Neurotol 2021; 42:e145-e152. [PMID: 33026782 DOI: 10.1097/mao.0000000000002896] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
OBJECTIVE To evaluate the outcomes and association factors of long-term hearing preservation (HP) in cochlear implantation with lateral wall (LW) electrode arrays. STUDY DESIGN Retrospective case review. SETTING Tertiary academic center. PATIENTS Thirty-four consecutive ears from 32 patients with a ≤ 80 dB HL preoperative low-frequency pure-tone average of 250 to 500 Hz were included. INTERVENTION Cochlear implantation with LW electrode arrays and the intention of achieving HP. MAIN OUTCOME MEASURES HP classifications according to the HEARRING group and functional HP methods (≤ 85 dB HL of pure-tone threshold at 250 Hz) at 1 year postoperatively. RESULTS Based on the HEARRING classification, complete, partial, and minimal HP was achieved in 7 ears (21%), 12 ears (35%), and 4 ears (12%), respectively. Under functional classification, 14 ears (41%) exhibited functional hearing after surgery. The average threshold shift was 17.1 dB HL (SD = 16.9 dB HL). Among various clinical features, a ≤ 60 dB HL preimplant pure-tone threshold of 250 Hz was associated with HP outcome in both classifications (OR = 12.95, 95% CI = 1.29-130.01, p = 0.029 in HEARRING classification; OR = 14.36, 95% CI = 1.07-191.40, p = 0.044 in functional classification). The following parameters were not associated with HP (p > 0.05): patient demographics, surgical aspects (insertion route and depth), electrode array size, scalar electrode position, and presence of comorbidity. CONCLUSION With LW electrode arrays, HP was achieved in 68% of HEARRRING group patients and 41% of functional classification patients. A ≤ 60 dB HL preimplant pure-tone threshold of 250 Hz was significantly associated with an increased rate of long-term HP.
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12
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Kurioka T, Sano H, Furuki S, Yamashita T. Long-term administration of vitamin B12 and adenosine triphosphate for idiopathic sudden sensorineural hearing loss: a retrospective study. PeerJ 2020; 8:e10406. [PMID: 33362960 PMCID: PMC7749652 DOI: 10.7717/peerj.10406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Accepted: 10/31/2020] [Indexed: 11/24/2022] Open
Abstract
Background In idiopathic sudden sensorineural hearing loss (ISSNHL), the relationship between the administration duration of vitamin B12 (vit B12) with adenosine triphosphate (ATP) and their therapeutic effect is not fully understood. Objective To investigate the therapeutic effect of long-term 16 (≥weeks) administration of vit B12 with ATP on the prognosis of ISSNHL patients and compare it with those of short-term (<8 weeks) and middle-term (≥8 weeks, <16 weeks) administration. Methods We retrospectively reviewed the medical records of 117 patients with ISSNHL treated between 2015 and 2018. Results The overall recovery rate was 32.5%. Initial higher hearing threshold and initial higher grade of hearing loss (HL) were associated with a poor prognosis. However, the administration duration of vit B12 and ATP did not influence the overall hearing improvement. With regard to the time course of hearing recovery, there was no significant difference in hearing recovery among the long-, middle-, and short-term administration groups until 16 weeks after treatment. However, at 16–24 weeks after initial treatment, the short-term administration group exhibited significantly lower hearing recovery than did the long-term administration groups. Conclusions The administration duration of vit B12 and ATP did not influence the overall hearing prognosis in ISSNHL, but long-term administration of vit B12 and ATP helped prevent the progression of HL after ISSNHL. Our results suggest that long-term administration of vit B12 and ATP is not necessarily required to treat ISSNHL patients, except for slowly progressing HL in the affected ears.
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Affiliation(s)
- Takaomi Kurioka
- Department of Otorhinolaryngology, Head and Neck Surgery, Kitasato University, Kanagawa, Japan
| | - Hajime Sano
- School of Allied Health Sciences, Kitasato University, Kanagawa, Japan
| | - Shogo Furuki
- Department of Otorhinolaryngology, Head and Neck Surgery, Kitasato University, Kanagawa, Japan
| | - Taku Yamashita
- Department of Otorhinolaryngology, Head and Neck Surgery, Kitasato University, Kanagawa, Japan
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Zazove P, Plegue MA, McKee MM, DeJonckheere M, Kileny PR, Schleicher LS, Green LA, Sen A, Rapai ME, Mulhem E. Effective Hearing Loss Screening in Primary Care: The Early Auditory Referral-Primary Care Study. Ann Fam Med 2020; 18:520-527. [PMID: 33168680 PMCID: PMC7708285 DOI: 10.1370/afm.2590] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Revised: 05/04/2020] [Accepted: 05/11/2020] [Indexed: 12/11/2022] Open
Abstract
PURPOSE Hearing loss, the second most common disability in the United States, is under-diagnosed and under-treated. Identifying it in early stages could prevent its known substantial adverse outcomes. METHODS A multiple baseline design was implemented to assess a screening paradigm for identifying and referring patients aged ≥55 years with hearing loss at 10 family medicine clinics in 2 health systems. Patients completed a consent form and the Hearing Handicap Inventory for the Elderly (HHI). An electronic alert prompted clinicians to screen for hearing loss during visits. RESULTS The 14,877 eligible patients during the study period had 36,701 encounters. Referral rates in the family medicine clinics increased from a baseline rate of 3.2% to 14.4% in 1 health system and from a baseline rate of 0.7% to 4.7% in the other. A general medicine comparison group showed referral rate increase from the 3.0% baseline rate to 3.3%. Of the 5,883 study patients who completed the HHI 25.2% (n=1,484) had HHI scores suggestive of hearing loss; those patients had higher referral rates, 28% vs 9.2% (P <.001). Of 1,660 patients referred for hearing testing, 717 had audiology data available for analysis: 669 (93.3%) were rated appropriately referred and 421 (58.7%) were considered hearing aid candidates. Overall, 71.5% of patients contacted felt their referral was appropriate. CONCLUSION An electronic alert used to remind clinicians to ask patients aged ≥55 years about hearing loss significantly increased audiology referrals for at-risk patients. Audiologic and audiogram data support the effectiveness of the prompt. Clinicians should consider adopting this method to identify patients with hearing loss to reduce its known and adverse sequelae.
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Affiliation(s)
- Philip Zazove
- Department of Family Medicine, University of Michigan, Ann Arbor, Michigan
| | - Melissa A Plegue
- Department of Family Medicine, University of Michigan, Ann Arbor, Michigan
| | - Michael M McKee
- Department of Family Medicine, University of Michigan, Ann Arbor, Michigan
| | | | - Paul R Kileny
- Otorhinolaryngology Department, University of Michigan, Ann Arbor, Michigan
| | | | - Lee A Green
- Department of Family Medicine, University of Alberta, Edmonton, Alberta, Canada
| | - Ananda Sen
- Department of Family Medicine and Biostatistics, University of Michigan, Ann Arbor, Michigan
| | - Mary E Rapai
- Department of Family Medicine, University of Michigan, Ann Arbor, Michigan
| | - Elie Mulhem
- Department of Family Medicine, Oakland University William Beaumont School of Medicine, Rochester, Michigan
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Cho WK, Kang WS, Lee JB, Park HJ, Chung JW, Ahn JH. Interpreting auditory brainstem evoked responses and distortion product otoacoustic emissions in diabetic patients with normal hearing. Auris Nasus Larynx 2020; 48:227-234. [PMID: 32921527 DOI: 10.1016/j.anl.2020.08.022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Revised: 07/26/2020] [Accepted: 08/27/2020] [Indexed: 10/23/2022]
Abstract
OBJECTIVE Hearing impairment is a reported late complication of diabetes mellitus (DM). Previous studies have suggested that microangiopathic complications may cause cochlear nerve function deterioration. We evaluated the auditory brainstem evoked responses (ABRs) and distortion product otoacoustic emission (DPOAE) results according to the presence of DM in subjects with normal hearing. METHODS A cross-sectional comparative study was conducted from January 2016 to January 2018. Auditory function tests including ABR and DPOAE were performed for outpatients complaining of unilateral tinnitus. All of analyses were conducted in ears without tinnitus on contralateral side of tinnitus ears. We included subjects showing hearing thresholds within 25 dB at 0.5, 1k, 2k, and 4k on pure tone audiometry. 45 ears in patients with type 2 diabetes mellitus and 85 ears in non-diabetic patients were finally enrolled in our study. RESULTS Diabetic subjects showed significantly more prolonged absolute peak latencies (I, III, V) and inter-peak latencies (I-V, III-V) than non-diabetic subjects. However, there was no significant difference in the inter-peak latency (I-III) between these two groups. Diabetic subjects also showed significantly lower amplitudes at f2 frequencies of 1001, 1200, 1587, 4004, 5042, and 6348 Hz than non-diabetic subjects. Additionally, the prevalence of a DPOAE response, defined as 3 dB above the noise floor, was significantly lower in diabetic subjects than that in non-diabetic subjects. CONCLUSION Diabetic patients with normal hearing can still have abnormal ABR and DPOAE results due to diabetic neuroangiopathy. ABR and DPOAE assessments can help in detecting subclinical auditory dysfunction, which precedes the manifestation of hearing impairment in diabetic patients.
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Affiliation(s)
- Won Ki Cho
- Department of Otorhinolaryngology-Head and Neck Surgery, Asan Medical Center, University of Ulsan College of Medicine, 88, Olympic-ro 43-gil, Songpa-gu, Seoul 05505, Republic of Korea
| | - Woo Seok Kang
- Department of Otorhinolaryngology-Head and Neck Surgery, Asan Medical Center, University of Ulsan College of Medicine, 88, Olympic-ro 43-gil, Songpa-gu, Seoul 05505, Republic of Korea
| | - Jung Bok Lee
- Department of Clinical Epidemiology and Biostatistics, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Hong Ju Park
- Department of Otorhinolaryngology-Head and Neck Surgery, Asan Medical Center, University of Ulsan College of Medicine, 88, Olympic-ro 43-gil, Songpa-gu, Seoul 05505, Republic of Korea
| | - Jong Woo Chung
- Department of Otorhinolaryngology-Head and Neck Surgery, Asan Medical Center, University of Ulsan College of Medicine, 88, Olympic-ro 43-gil, Songpa-gu, Seoul 05505, Republic of Korea
| | - Joong Ho Ahn
- Department of Otorhinolaryngology-Head and Neck Surgery, Asan Medical Center, University of Ulsan College of Medicine, 88, Olympic-ro 43-gil, Songpa-gu, Seoul 05505, Republic of Korea.
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15
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Doostkam A, Mirkhani H, Iravani K, Karbalay-Doust S, Zarei K. Effect of Rutin on Diabetic Auditory Neuropathy in an Experimental Rat Model. Clin Exp Otorhinolaryngol 2020; 14:259-267. [PMID: 32764214 PMCID: PMC8373845 DOI: 10.21053/ceo.2019.02068] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Accepted: 05/05/2020] [Indexed: 01/03/2023] Open
Abstract
Objectives Diabetic auditory neuropathy is a common complication of diabetes mellitus that has a major impact on patients’ quality of life. In this study, we assessed the efficacy of rutin in treating diabetic auditory neuropathy in an experimental rat model. Methods Forty Sprague-Dawley rats were randomly assigned to the following groups: group 1, control; group 2, diabetic rats; and groups 3–5, rats treated with rutin (at doses of 50, 100, and 150 mg/kg, respectively). We used auditory brain stem response, stereology of the spiral ganglion, and measurements of superoxide dismutase (SOD) and malondialdehyde (MDA) to evaluate the effects of treatment. Results Significant improvements in auditory neuropathy were observed in the rutin-treated groups in comparison with the diabetic group (P<0.05). Auditory threshold, wave latency, wave morphology, the volume and number of neurons in the spiral ganglion, and SOD and MDA activity showed improvements following treatment. Conclusion Rutin shows promise as a treatment modality for diabetic auditory neuropathy, but more trials are warranted for its clinical application.
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Affiliation(s)
- Aida Doostkam
- Department of Pharmacology, School of Medicine, Shiraz Nephro-Urology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Hossein Mirkhani
- Department of Pharmacology, Medicinal and Natural Products Chemistry Research Center, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Kamyar Iravani
- Department of Otolaryngology, Otolaryngology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Saied Karbalay-Doust
- Department of Anatomy, Histomorphometry and Stereology Research Center, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Kazem Zarei
- Department of Otolaryngology, Otolaryngology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
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Pterostilbene protects cochlea from ototoxicity in streptozotocin-induced diabetic rats by inhibiting apoptosis. PLoS One 2020; 15:e0228429. [PMID: 32722679 PMCID: PMC7386625 DOI: 10.1371/journal.pone.0228429] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Accepted: 05/19/2020] [Indexed: 12/05/2022] Open
Abstract
Diabetes mellitus (DM) causes ototoxicity by inducing oxidative stress, microangiopathy, and apoptosis in the cochlear sensory hair cells. The natural anti-oxidant pterostilbene (PTS) (trans-3,5-dimethoxy-4-hydroxystylbene) has been reported to relieve oxidative stress and apoptosis in DM, but its role in diabetic-induced ototoxicity is unclear. This study aimed to investigate the effects of dose-dependent PTS on the cochlear cells of streptozotocin (STZ)-induced diabetic rats. The study included 30 albino male Wistar rats that were randomized into five groups: non-diabetic control (Control), diabetic control (DM), and diabetic rats treated with intraperitoneal PTS at 10, 20, or 40 mg/kg/day during the four-week experimental period (DM + PTS10, DM + PTS20, and DM + PTS40). Distortion product otoacoustic emission (DPOAE) tests were performed at the beginning and end of the study. At the end of the experimental period, apoptosis in the rat cochlea was investigated using caspase-8, cytochrome-c, and terminal deoxyribonucleotidyl transferase-mediated dUTP-biotin end labeling (TUNEL). Quantitative real-time polymerase chain reaction was used to assess the mRNA expression levels of the following genes: CASP-3, BCL-associated X protein (BAX), and BCL-2. Body weight, blood glucose, serum insulin, and malondialdehyde (MDA) levels in the rat groups were evaluated. The mean DPOAE amplitude in the DM group was significantly lower than the means of the other groups (0.9–8 kHz; P < 0.001 for all). A dose-dependent increase of the mean DPOAE amplitudes was observed with PTS treatment (P < 0.05 for all). The Caspase-8 and Cytochrome-c protein expressions and the number of TUNEL-positive cells in the hair cells of the Corti organs of the DM rat group were significantly higher than those of the PTS treatment and control groups (DM > DM + PTS10 > DM + PTS20 > DM + PTS40 > Control; P < 0.05 for all). PTS treatment also reduced cell apoptosis in a dose-dependent manner by increasing the mRNA expression of the anti-apoptosis BCL2 gene and by decreasing the mRNA expressions of both the pro-apoptosis BAX gene and its effector CASP-3 and the ratio of BAX/BCL-2 in a dose-dependent manner (P < 0.05 compared to DM for all). PTS treatment significantly improved the metabolic parameters of the diabetic rats, such as body weight, blood glucose, serum insulin, and MDA levels, consistent with our other findings (P < 0.05 compared to DM for all). PTS decreased the cochlear damage caused by diabetes, as confirmed by DPOAE, biochemical, histopathological, immunohistochemical, and molecular findings. This study reports the first in vivo findings to suggest that PTS may be a protective therapeutic agent against diabetes-induced ototoxicity.
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Kim YH, Kim EY, Rodriguez I, Nam YH, Jeong SY, Hong BN, Choung SY, Kang TH. Sesamum indicum L. Oil and Sesamin Induce Auditory-Protective Effects Through Changes in Hearing Loss-Related Gene Expression. J Med Food 2020; 23:491-498. [PMID: 32186941 DOI: 10.1089/jmf.2019.4542] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
Changing consumption patterns and increasing health awareness, especially in Europe, are resulting in an increased demand for sesame seeds. In 2016, Asia imported the highest quantity of sesame seeds, followed by Europe and North America. We examined, for the first time, the effects of treatment with sesame oil and sesamin in hearing impairment models. Sesame oil exhibited an ameliorative effect on auditory impairment in a hair cell line in zebrafish and mice. In ototoxic zebrafish larvae, neuromasts and otic cells increased in numbers because of sesame oil. Furthermore, auditory function in noise-induced hearing loss (NIHL) was studied through auditory brainstem response to evaluate the therapeutic effects of sesame oil. Sesame oil reduced the hearing threshold shift in response to clicks and 8, 16-kHz tone bursts in NIHL mice. Auditory-protective effect of sesame oil was seen in zebrafish and mice; therefore, we used chromatographic analysis to study sesamin, which is the major effective factor in sesame oil. To investigate its effects related to auditory function, we studied the hearing-related gene, Tecta, using the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl-tetrazoliumbromide (MTT) assay. Auditory cell proliferation was induced by treatment with sesame oil and sesamin using Tecta (Tectorin Alpha) regulation. The expression of Tecta increases in the apex area of the cochlear hair cells as they grow, and their activity is enhanced by sesame oil and sesamin. These results provide a novel mechanistic insight into the sesame oil activities and suggest that sesamin, the key constituent in sesame oil, is responsible for its auditory function related benefits, including protection of auditory cells and reversal of their impairments.
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Affiliation(s)
- Yun Hee Kim
- Department of Oriental Medicine Biotechnology, College of Life Sciences, Graduate School of Biotechnology, Kyung Hee University, Gyeonggi, Korea
| | - Eun Young Kim
- Department of Oriental Medicine Biotechnology, College of Life Sciences, Graduate School of Biotechnology, Kyung Hee University, Gyeonggi, Korea
| | - Isabel Rodriguez
- Department of Oriental Medicine Biotechnology, College of Life Sciences, Graduate School of Biotechnology, Kyung Hee University, Gyeonggi, Korea
| | - Youn Hee Nam
- Department of Oriental Medicine Biotechnology, College of Life Sciences, Graduate School of Biotechnology, Kyung Hee University, Gyeonggi, Korea
| | - Seo Yule Jeong
- Department of Oriental Medicine Biotechnology, College of Life Sciences, Graduate School of Biotechnology, Kyung Hee University, Gyeonggi, Korea
| | - Bin Na Hong
- Department of Oriental Medicine Biotechnology, College of Life Sciences, Graduate School of Biotechnology, Kyung Hee University, Gyeonggi, Korea
| | - Se-Young Choung
- Department of Preventive Pharmacy and Toxicology, College of Pharmacy, Kyung Hee University, Seoul, Korea
| | - Tong Ho Kang
- Department of Oriental Medicine Biotechnology, College of Life Sciences, Graduate School of Biotechnology, Kyung Hee University, Gyeonggi, Korea
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Pålbrink AK, Kopietz F, Morén B, In 't Zandt R, Kalinec F, Stenkula K, Göransson O, Holm C, Magnusson M, Degerman E. Inner ear is a target for insulin signaling and insulin resistance: evidence from mice and auditory HEI-OC1 cells. BMJ Open Diabetes Res Care 2020; 8:8/1/e000820. [PMID: 32238362 PMCID: PMC7170413 DOI: 10.1136/bmjdrc-2019-000820] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Revised: 02/14/2020] [Accepted: 03/03/2020] [Indexed: 12/20/2022] Open
Abstract
OBJECTIVE The mechanisms underlying the association between diabetes and inner ear dysfunction are not known yet. The aim of the present study is to evaluate the impact of obesity/insulin resistance on inner ear fluid homeostasis in vivo, and to investigate whether the organ of Corti could be a target tissue for insulin signaling using auditory House Ear Institute-Organ of Corti 1 (HEI-OC1) cells as an in vitro model. METHODS High fat diet (HFD) fed C57BL/6J mice were used as a model to study the impact of insulin resistance on the inner ear. In one study, 12 C57BL/6J mice were fed either control diet or HFD and the size of the inner ear endolymphatic fluid compartment (EFC) was measured after 30 days using MRI and gadolinium contrast as a read-out. In another study, the size of the inner ear EFC was evaluated in eight C57BL/6J mice both before and after HFD feeding, with the same techniques. HEI-OC1 auditory cells were used as a model to investigate insulin signaling in organ of Corti cells. RESULTS HFD feeding induced an expansion of the EFC in C57BL/6J mice, a hallmark of inner ear dysfunction. Insulin also induced phosphorylation of protein kinase B (PKB/Akt) at Ser473, in a PI3-kinase-dependent manner. The phosphorylation of PKB was inhibited by isoproterenol and IBMX, a general phosphodiesterase (PDE) inhibitor. PDE1B, PDE4D and the insulin-sensitive PDE3B were found expressed and catalytically active in HEI-OC1 cells. Insulin decreased and AICAR, an activator of AMP-activated protein kinase, increased the phosphorylation at the inhibitory Ser79 of acetyl-CoA carboxylase, the rate-limiting enzyme in de novo lipogenesis. Furthermore, the activity of hormone-sensitive lipase, the rate-limiting enzyme in lipolysis, was detected in HEI-OC1 cells. CONCLUSIONS The organ of Corti could be a target tissue for insulin action, and inner ear insulin resistance might contribute to the association between diabetes and inner ear dysfunction.
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Affiliation(s)
- Ann-Ki Pålbrink
- Experimental Medical Science, Section for Diabetes, Metabolism and Endocrinology, Lund University Diabetes Centre, Lund University, Lund, Sweden
| | - Franziska Kopietz
- Experimental Medical Science, Section for Diabetes, Metabolism and Endocrinology, Lund University Diabetes Centre, Lund University, Lund, Sweden
| | - Björn Morén
- Experimental Medical Science, Section for Diabetes, Metabolism and Endocrinology, Lund University Diabetes Centre, Lund University, Lund, Sweden
| | - René In 't Zandt
- Lund University Bioimaging Center, Lund University, Lund, Sweden
| | - Federico Kalinec
- Department of Head and Neck Surgery, Laboratory of Auditory Cell Biology, David Geffen Schoolof Medicin, UCLA, Los Angeles, California, USA
| | - Karin Stenkula
- Experimental Medical Science, Section for Diabetes, Metabolism and Endocrinology, Lund University Diabetes Centre, Lund University, Lund, Sweden
| | - Olga Göransson
- Experimental Medical Science, Section for Diabetes, Metabolism and Endocrinology, Lund University Diabetes Centre, Lund University, Lund, Sweden
| | - Cecilia Holm
- Experimental Medical Science, Section for Diabetes, Metabolism and Endocrinology, Lund University Diabetes Centre, Lund University, Lund, Sweden
| | - Måns Magnusson
- Department of Clinical Science, Section for Otorhinolaryngology, Lund University & Skåne University Hospital, Lund, Sweden
| | - Eva Degerman
- Experimental Medical Science, Section for Diabetes, Metabolism and Endocrinology, Lund University Diabetes Centre, Lund University, Lund, Sweden
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Wang D, Zhou Y, Ma J, Xiao L, Cao L, Zhou M, Kong W, Wang Z, Li W, He M, Zhang X, Guo H, Yuan J, Chen W. Association between shift work and hearing loss: The Dongfeng-Tongji cohort study. Hear Res 2019; 384:107827. [DOI: 10.1016/j.heares.2019.107827] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/12/2019] [Revised: 09/16/2019] [Accepted: 10/23/2019] [Indexed: 01/22/2023]
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Abstract
The relationship between diabetes mellitus (DM) and the auditory/vestibular system has been investigated for more than a century. Most population-based investigations of hearing loss in persons with diabetes (PWD) have revealed a slow progressive, bilateral, high-frequency sensorineural hearing loss. Despite the growing research literature on the pathophysiology of DM-related hearing loss using various animal models and other human studies, knowledge of specific mechanism of the degenerative changes of the inner ear and/or auditory nerve is far from full elucidation. Recent investigations of the mechanisms underlying the association between hearing loss and DM suggest complex combined contributions of hyperglycemia, oxidative stress resulting in cochlear microangiopathy, and auditory neuropathy. An even lesser understood complication of DM is the effect on the vestibular system. Here we provide an overview of animal and human evidence of pathophysiological changes created by DM and its effects on auditory-vestibular anatomy and function.
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Affiliation(s)
- Saravanan Elangovan
- Department of Audiology and Speech-Language Pathology, East Tennessee State University, Johnson City, Tennessee
| | - Christopher Spankovich
- Department of Otolaryngology and Communicative Sciences, University of Mississippi Medical Center, Jackson, Mississippi
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Abstract
Supplemental Digital Content is available in the text. Objectives: Diabetes mellitus (DM) is associated with a variety of sensory complications. Very little attention has been given to auditory neuropathic complications in DM. The aim of this study was to determine whether type 1 DM (T1DM) affects neural coding of the rapid temporal fluctuations of sounds, and how any deficits may impact on behavioral performance. Design: Participants were 30 young normal-hearing T1DM patients, and 30 age-, sex-, and audiogram-matched healthy controls. Measurements included electrophysiological measures of auditory nerve and brainstem function using the click-evoked auditory brainstem response, and of brainstem neural temporal coding using the sustained frequency-following response (FFR); behavioral tests of temporal coding (interaural phase difference discrimination and the frequency difference limen); tests of speech perception in noise; and self-report measures of auditory disability using the Speech, Spatial and Qualities of Hearing Scale. Results: There were no significant differences between T1DM patients and controls in the auditory brainstem response. However, the T1DM group showed significantly reduced FFRs to both temporal envelope and temporal fine structure. The T1DM group also showed significantly higher interaural phase difference and frequency difference limen thresholds, worse speech-in-noise performance, as well as lower overall Speech, Spatial and Qualities scores than the control group. Conclusions: These findings suggest that T1DM is associated with degraded neural temporal coding in the brainstem in the absence of an elevation in audiometric threshold, and that the FFR may provide an early indicator of neural damage in T1DM, before any abnormalities can be identified using standard clinical tests. However, the relation between the neural deficits and the behavioral deficits is uncertain.
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Cohen Atsmoni S, Brener A, Roth Y. Diabetes in the practice of otolaryngology. Diabetes Metab Syndr 2019; 13:1141-1150. [PMID: 31336457 DOI: 10.1016/j.dsx.2019.01.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/06/2018] [Accepted: 01/14/2019] [Indexed: 02/07/2023]
Abstract
Diabetes mellitus is the most common endocrine disease, characterized by chronic hyperglycemia. The hyperglycemic milieu leads to endothelial injury in blood vessels of variant size, which results in microangiopathy and macroangiopathy (atherosclerosis). Consequential ischemia of nerves and hyperglycemia by itself lead to nerve degeneration and generalized neuropathy, affecting most often the sensory peripheral nerves and the autonomic nervous system. Auditory, vestibular and olfactory sensorium may be compromised by DM. People with DM have an increased susceptibility to infection, as a result of neutrophil dysfunction and impaired humoral immunity. Therefore DM predisposes to certain infectious diseases, such as fungal sinusitis or malignant otitis externa, which are rare in general population. Recovery from infections or from injuries may be compromised by coexisting DM. In this review we discuss complications of DM in the head and neck region. Otolaryngologists and general practitioners should be alert to specific conditions related to DM and be minded of the relevant complications and consequences.
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Affiliation(s)
- Smadar Cohen Atsmoni
- Department of Otolaryngology-Head and Neck Surgery, The Edith Wolsfon Medical Center, Holon, Israel; Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.
| | - Avivit Brener
- Pediatric Endocrinology & Diabetes Unit, Dana-Dwek Children's Hospital, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel; Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Yehudah Roth
- Department of Otolaryngology-Head and Neck Surgery, The Edith Wolsfon Medical Center, Holon, Israel; Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
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Nagahama S, Kashino I, Hu H, Nanri A, Kurotani K, Kuwahara K, Dan M, Michikawa T, Akter S, Mizoue T, Murakami Y, Nishiwaki Y. Haemoglobin A1c and hearing impairment: longitudinal analysis using a large occupational health check-up data of Japan. BMJ Open 2018; 8:e023220. [PMID: 30224397 PMCID: PMC6144394 DOI: 10.1136/bmjopen-2018-023220] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Revised: 07/31/2018] [Accepted: 08/04/2018] [Indexed: 12/13/2022] Open
Abstract
OBJECTIVES The aim of this study was to determine whether haemoglobin A1c (HbA1c) level is associated with the incidence of hearing impairment accounting for smoking status and diabetic condition at baseline. METHODS Participants were 131 689 men and 71 286 women aged 30-65 years and free of hearing impairment at baseline (2008) who attended Japanese occupational annual health check-ups from 2008 to 2015. We defined low-frequency hearing impairment at a hearing threshold >30 dB at 1 kHz and high frequency at >40 dB at 4 kHz in the better ear in pure-tone audiometric tests. HbA1c was categorised into seven categories. The association between HbA1c and hearing impairment was assessed using the Cox proportional hazards model. RESULTS On 5 years mean follow-up, high HbA1c was associated with high-frequency hearing impairment. In non-smokers, HbA1c≥8.0% was associated with high-frequency hearing impairment, with a multivariable HR (95% CI) compared with HbA1c 5.0%-5.4% of 1.46 (1.10 to 1.94) in men and 2.15 (1.13 to 4.10) in women. There was no significant association between HbA1c and hearing impairment in smokers. A J-shaped association between HbA1c and high-frequency hearing impairment was observed for participants with diabetes at baseline. HbA1c was not associated with low-frequency hearing impairment among any participants. CONCLUSIONS HbA1c ≥8.0% of non-smokers and ≥7.3% of participants with diabetes was associated with high-frequency hearing impairment. These findings indicate that appropriate glycaemic control may prevent diabetic-related hearing impairment.
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Affiliation(s)
- Satsue Nagahama
- Department of Environmental and Occupational Health, Toho University Graduate School of Medicine, Tokyo, Japan
- Division of Occupational Health and Promotion, All Japan Labor Welfare Foundation, Tokyo, Japan
- Department of Epidemiology and Prevention, Center for Clinical Sciences, National Center for Global Health and Medicine, Tokyo, Japan
| | - Ikuko Kashino
- Department of Epidemiology and Prevention, Center for Clinical Sciences, National Center for Global Health and Medicine, Tokyo, Japan
| | - Huanhuan Hu
- Department of Epidemiology and Prevention, Center for Clinical Sciences, National Center for Global Health and Medicine, Tokyo, Japan
| | - Akiko Nanri
- Department of Food and Health Sciences International College of Arts and Sciences, Fukuoka Women’s University, Fukuoka, Japan
| | - Kayo Kurotani
- Department of Nutritional Epidemiology and Shokuiku, National Institutes of Biomedical Innovation, Health and Nutrition, National Institute of Health and Nutrition, Tokyo, Japan
| | - Keisuke Kuwahara
- Department of Epidemiology and Prevention, Center for Clinical Sciences, National Center for Global Health and Medicine, Tokyo, Japan
- Graduate School of Public Health, Teikyo University, Tokyo, Japan
| | - Masashi Dan
- Division of Occupational Health and Promotion, All Japan Labor Welfare Foundation, Tokyo, Japan
| | - Takehiro Michikawa
- Environmental Epidemiology Section, Centre for Health and Environmental Risk Research, National Institute for Environmental Studies, Tsukuba, Japan
| | - Shamima Akter
- Department of Epidemiology and Prevention, Center for Clinical Sciences, National Center for Global Health and Medicine, Tokyo, Japan
| | - Tetsuya Mizoue
- Department of Epidemiology and Prevention, Center for Clinical Sciences, National Center for Global Health and Medicine, Tokyo, Japan
| | - Yoshitaka Murakami
- Department of Medical Statistics, Toho University Graduate School of Medicine, Tokyo, Japan
| | - Yuji Nishiwaki
- Department of Environmental and Occupational Health, Toho University Graduate School of Medicine, Tokyo, Japan
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Singer AEA, Abdel-Naby Awad OG, El-Kader RMA, Mohamed AR. Risk factors of sensorineural hearing loss in patients with unilateral safe chronic suppurative otitis media. Am J Otolaryngol 2018; 39:88-93. [PMID: 29331307 DOI: 10.1016/j.amjoto.2018.01.002] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Revised: 01/01/2018] [Accepted: 01/03/2018] [Indexed: 11/18/2022]
Abstract
PURPOSE Chronic suppurative otitis media (CSOM) is the major cause of hearing impairment, especially conductive hearing loss. Few patients also had sensorineural component, the sensorineural hearing loss (SNHL) in CSOM is controversial, especially for safe mucosal type. This study aims to assess the relationship between the frequency of SNHL development in patients with safe mucosal CSOM and its relation to patient's age, sex, duration of disease, size of perforation and different audiological findings. MATERIAL AND METHODS This is a prospective study conducted from June 2016 to June 2017 in a tertiary referral hospital. 200 patients with unilateral mucosal type of CSOM with normal contralateral ear were included in the study. The diseased ears were taken as study ears and normal ears as control ears in all patients. Detailed otologic history, clinical and audiometric findings were recorded and analyzed. Results were statistically compared in all patients for both study and control ears using different parameters. RESULTS Twenty patients had an average bone conduction threshold of all frequencies above 25dB, which implies SNHL (10%). The incidence of SNHL was statistically significant at higher speech frequencies. The incidence increased with the presence of Diabetes Mellitus, smoking, duration of disease, presence of active discharge and the increase in size of perforation. However, it is not age dependent and there was no difference between males and females. CONCLUSION Safe mucosal CSOM can cause SNHL with multiple predisposing factors.
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Affiliation(s)
| | | | | | - Ahmed Rabeh Mohamed
- Otolaryngology, Head and Neck Department, Police Academy Hospital, Cairo, Egypt
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26
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Kim MB, Zhang Y, Chang Y, Ryu S, Choi Y, Kwon MJ, Moon IJ, Deal JA, Lin FR, Guallar E, Chung EC, Hong SH, Ban JH, Shin H, Cho J. Diabetes mellitus and the incidence of hearing loss: a cohort study. Int J Epidemiol 2018; 46:717-726. [PMID: 27818377 DOI: 10.1093/ije/dyw243] [Citation(s) in RCA: 71] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/03/2016] [Indexed: 12/20/2022] Open
Abstract
Background To evaluate the association between diabetes mellitus (DM) and the development of incident hearing loss. Methods Prospective cohort study was performed in 253 301 adults with normal hearing tests who participated in a regular health-screening exam between 2002 and 2014. The main exposure was the presence of DM at baseline, defined as a fasting serum glucose ≥ 126 mg/dL, a self-reported history of DM or current use of anti-diabetic medications. Pre-diabetes was defined as a fasting glucose 100-125 mg/dL and no history of DM or anti-diabetic medication use. Incident hearing loss was defined as a pure-tone average of thresholds at 0.5, 1.0 and 2.0 kHz > 25 dB in both right and left ears. Results During 1 285 704 person-years of follow-up (median follow-up of four years), 2817 participants developed incident hearing loss. The rate of hearing loss in participants with normal glucose levels, pre-diabetes and DM were 1.8, 3.1 and 9.2 per 1000 person-years, respectively ( P < 0.001). The multivariable-adjusted hazard ratios for incident hearing loss for participants with pre-diabetes and DM compared with those with normal glucose levels were 1.04 (95% confidence interval 0.95-1.14) and 1.36 (1.19-1.56), respectively. In spline regression analyses, the risk of incident hearing loss increased progressively with HbA1c levels above 5%. Conclusions In this large cohort study of young and middle-aged men and women, DM was associated with the development of bilateral hearing loss. DM patients have a moderately increased risk of future hearing loss.
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Affiliation(s)
- Min-Beom Kim
- Department of Otorhinolaryngology-Head and Neck Surgery, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Yiyi Zhang
- Department of Epidemiology, Johns Hopkins University Bloomberg School of Public Health, Baltimore, MD, USA.,Department of Medicine and Welch Center for Prevention, Epidemiology, and Clinical Research, Johns Hopkins University Bloomberg School of Public Health, Baltimore, MD, USA
| | - Yoosoo Chang
- Center for Cohort Studies, Total Healthcare Center, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, South Korea.,Department of Occupational and Environmental Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, South Korea.,Department of Clinical Research Design & Evaluation, SAIHST, Sungkyunkwan University, Seoul, South Korea
| | - Seungho Ryu
- Center for Cohort Studies, Total Healthcare Center, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, South Korea.,Department of Occupational and Environmental Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, South Korea.,Department of Clinical Research Design & Evaluation, SAIHST, Sungkyunkwan University, Seoul, South Korea
| | - Yuni Choi
- Center for Cohort Studies, Total Healthcare Center, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Min-Jung Kwon
- Center for Cohort Studies, Total Healthcare Center, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, South Korea.,Department of Laboratory Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Il Joon Moon
- Department of Otorhinolaryngology-Head and Neck Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Jennifer A Deal
- Department of Epidemiology, Johns Hopkins University Bloomberg School of Public Health, Baltimore, MD, USA
| | - Frank R Lin
- Department of Epidemiology, Johns Hopkins University Bloomberg School of Public Health, Baltimore, MD, USA.,Department of Otolaryngology-Head & Neck Surgery, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Eliseo Guallar
- Department of Epidemiology, Johns Hopkins University Bloomberg School of Public Health, Baltimore, MD, USA.,Department of Medicine and Welch Center for Prevention, Epidemiology, and Clinical Research, Johns Hopkins University Bloomberg School of Public Health, Baltimore, MD, USA
| | - Eun Chul Chung
- Center for Cohort Studies, Total Healthcare Center, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, South Korea.,Department of Radiology, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Sung Hwa Hong
- Department of Otorhinolaryngology-Head and Neck Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Jae Ho Ban
- Department of Otorhinolaryngology-Head and Neck Surgery, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Hocheol Shin
- Center for Cohort Studies, Total Healthcare Center, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, South Korea.,Department of Family Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Juhee Cho
- Department of Epidemiology, Johns Hopkins University Bloomberg School of Public Health, Baltimore, MD, USA.,Center for Cohort Studies, Total Healthcare Center, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, South Korea.,Department of Clinical Research Design & Evaluation, SAIHST, Sungkyunkwan University, Seoul, South Korea
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Susceptibility of Diabetic Mice to Noise Trauma. BIOMED RESEARCH INTERNATIONAL 2018; 2018:7601232. [PMID: 29619376 PMCID: PMC5830016 DOI: 10.1155/2018/7601232] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/29/2017] [Revised: 12/26/2017] [Accepted: 01/17/2018] [Indexed: 02/07/2023]
Abstract
Diabetes can lead to many end-organ complications. However, the association between diabetes and hearing loss is not well understood. Here, we investigated the effect of noise exposure on diabetic mice compared with wild-type mice. Hearing threshold shifts, histopathologic changes in the cochlea, and inflammatory responses were evaluated over time. After noise exposure, more severe hearing threshold shifts, auditory hair cell loss, and synaptopathies were notable in diabetic mice compared with wild-type mice. Moreover, increased inflammatory responses and reactive oxygen species production were observed in the ears of diabetic mice. The results demonstrated that diabetic mice are more susceptible to noise trauma.
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28
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Pieskä T, Kotimäki J, Männikkö M, Sorri M, Hietikko E. Concomitant diseases and their effect on disease prognosis in Meniere's disease: diabetes mellitus identified as a negative prognostic factor. Acta Otolaryngol 2018; 138:36-40. [PMID: 28914106 DOI: 10.1080/00016489.2017.1373850] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
OBJECTIVE To study comorbidities and their effect on the disease progression in Meniere's disease (MD). METHODS Retrospective study on 350 definite MD patients diagnosed according to AAO-HNS 1995 criteria using hospital records and postal questionnaire. RESULTS The prevalence of migraine, hypothyroidism, allergies, coronary heart disease and autoimmune diseases was more common in MD patients than reported in the general population of Finland. Diabetes mellitus was associated with both more severe hearing impairment (p = .033) and more frequent vertigo (p = .028) in MD patients. The number of concomitant diseases was associated with more frequent vertigo (p = .021). CONCLUSIONS A patient's concomitant diseases, especially diabetes, should be treated effectively because they might affect the progression of MD. Further studies on the effects of concomitant diseases on MD prognosis are needed.
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Affiliation(s)
- Teemu Pieskä
- Faculty of Biochemistry and Molecular Medicine, University of Oulu, Oulu, Finland
- Department of Otorhinolaryngology and Head and Neck Surgery, Finland & PEDEGO Research Unit, Oulu University Hospital, University of Oulu, Oulu, Finland
| | - Jouko Kotimäki
- Department of Otorhinolaryngology, Central Hospital of Kainuu, Kajaani, Finland
| | - Minna Männikkö
- Faculty of Biochemistry and Molecular Medicine, University of Oulu, Oulu, Finland
- Center for Life Course Epidemiology and Systems Medicine, Faculty of Medicine, University of Oulu, Oulu, Finland
| | - Martti Sorri
- Department of Otorhinolaryngology and Head and Neck Surgery, Finland & PEDEGO Research Unit, Oulu University Hospital, University of Oulu, Oulu, Finland
| | - Elina Hietikko
- Faculty of Biochemistry and Molecular Medicine, University of Oulu, Oulu, Finland
- Department of Otorhinolaryngology and Head and Neck Surgery, Finland & PEDEGO Research Unit, Oulu University Hospital, University of Oulu, Oulu, Finland
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29
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Vascular and Neuroepithelial Histopathology of the Saccule in Humans With Diabetes Mellitus. Otol Neurotol 2017; 37:553-7. [PMID: 27050649 DOI: 10.1097/mao.0000000000001018] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
HYPOTHESIS This study aimed to determine if there are quantitative differences in the neuroepithelium and microvasculature of the saccule between subjects with and without diabetes mellitus (DM). BACKGROUND Histopathologic changes that may underlie the association between DM and vestibular dysfunction have not been characterized in humans. METHODS Human temporal bones (HTBs) from 39 subjects with DM (n = 16 type I DM [T1DM], n = 23 type II DM [T2DM]) were compared with 40 group age-matched controls. Vessel wall thickness was measured from the saccular arteriole. Type I and type II vestibular hair cell (VHC) counts were performed on perpendicularly oriented saccular maculae using differential interference contrast microscopy (T1DM: 5HTB/3 subjects; T2DM: 9HTB/8 subjects; controls: 25HTB/20 subjects). RESULTS The mean density of type I VHCs was 16 to 17% lower in the DM groups compared to controls (T1DM 52.21 [4.26], T2DM 53.3 [5.34], control 63.14 [2.49] cells/mm, p = 0.02). There were no differences between T1DM, T2DM, and control groups in type II VHC density (T1DM 40.89 [5.17], T2DM 40.44 [6.93], control 42.80 [1.79] cells/mm, p = 0.92) or in mean vessel wall thickness (T1DM 2.23 [0.62], T2DM 2.18 [0.53], control 2.00 [0.53] μm, p = 0.26). CONCLUSION Neuroepithelial pathology, manifested as lower density of type I VHCs, was observed in the saccules of subjects with DM. Saccular microangiopathy, expressed as alterations in arteriole thickness, was not observed. These findings are consistent with histologic observations in animals with experimentally induced diabetes. DM may have a selective and deleterious effect on human vestibular sensory epithelia.
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Tan HE, Lan NSR, Knuiman MW, Divitini ML, Swanepoel DW, Hunter M, Brennan-Jones CG, Hung J, Eikelboom RH, Santa Maria PL. Associations between cardiovascular disease and its risk factors with hearing loss-A cross-sectional analysis. Clin Otolaryngol 2017; 43:172-181. [PMID: 28703883 DOI: 10.1111/coa.12936] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/09/2017] [Indexed: 12/21/2022]
Abstract
OBJECTIVES To investigate the relationship between hearing loss and cardiovascular disease risk factors. DESIGN Cross-sectional study. METHODS Participants were recruited between May 2010 and December 2015 and answered a health and risk factor questionnaire. Physical and biochemical assessments were performed. SETTING A community-based population. PARTICIPANTS A total of 5107 participants born within the years 1946-1964 enrolled in the Busselton Healthy Ageing Study. MAIN OUTCOME MEASURES Hearing was assessed behaviourally through the best ear pure-tone average (500, 1000, 2000, 4000 Hz), low-frequency average (250, 500, 1000 Hz) and high-frequency average (4000, 8000 Hz). Self-reported hearing loss, tinnitus and hyperacusis were assessed via questionnaire. Cardiovascular risk factors were assessed via a patient-completed questionnaire and objective measurements including blood pressure, body mass index, waist circumference, lipid profile and glycated haemoglobin. RESULTS Of the participants, 54% were female, with the mean age of 58 years (range 45-69 years). Age, sex and family history of hearing loss were consistently strong determinants of hearing loss outcomes. After adjusting for these, obesity, current smoking, peripheral arterial disease and history of cardiovascular disease were significantly associated with pure-tone, low-frequency and high-frequency hearing loss. In addition, high blood pressure, triglyceride and glycated haemoglobin were significantly associated with low-frequency hearing loss. There was a graded association between hearing loss and Framingham Risk Score for cardiovascular risk (P<0.001). CONCLUSIONS Established cardiovascular disease and individual and combined cardiovascular disease risk factors were found to be associated with hearing loss. Future research should prospectively investigate whether targeting cardiovascular disease can prevent hearing loss.
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Affiliation(s)
- H E Tan
- Sir Charles Gairdner Hospital, Nedlands, WA, Australia.,Ear Science Institute Australia, Subiaco, WA, Australia.,Ear Sciences Centre, School of Surgery, The University of Western Australia, Nedlands, WA, Australia
| | - N S R Lan
- Ear Science Institute Australia, Subiaco, WA, Australia.,Ear Sciences Centre, School of Surgery, The University of Western Australia, Nedlands, WA, Australia.,Fiona Stanley Hospital, Murdoch, WA, Australia
| | - M W Knuiman
- School of Population and Global Health, The University of Western Australia, Nedlands, WA, Australia.,Busselton Population Medical Research Institute, Busselton, WA, Australia
| | - M L Divitini
- School of Population and Global Health, The University of Western Australia, Nedlands, WA, Australia.,Busselton Population Medical Research Institute, Busselton, WA, Australia
| | - D W Swanepoel
- Ear Science Institute Australia, Subiaco, WA, Australia.,Ear Sciences Centre, School of Surgery, The University of Western Australia, Nedlands, WA, Australia.,Department of Speech Language Pathology and Audiology, University of Pretoria, Pretoria, South Africa
| | - M Hunter
- School of Population and Global Health, The University of Western Australia, Nedlands, WA, Australia.,Busselton Population Medical Research Institute, Busselton, WA, Australia
| | - C G Brennan-Jones
- Ear Science Institute Australia, Subiaco, WA, Australia.,Ear Sciences Centre, School of Surgery, The University of Western Australia, Nedlands, WA, Australia.,Telethon Kids Institute, The University of Western Australia, Nedlands, WA, Australia
| | - J Hung
- Sir Charles Gairdner Hospital, Nedlands, WA, Australia.,School of Medicine and Pharmacology, The University of Western Australia, Nedlands, WA, Australia
| | - R H Eikelboom
- Ear Science Institute Australia, Subiaco, WA, Australia.,Ear Sciences Centre, School of Surgery, The University of Western Australia, Nedlands, WA, Australia.,Department of Speech Language Pathology and Audiology, University of Pretoria, Pretoria, South Africa
| | - P L Santa Maria
- Sir Charles Gairdner Hospital, Nedlands, WA, Australia.,Ear Science Institute Australia, Subiaco, WA, Australia.,Ear Sciences Centre, School of Surgery, The University of Western Australia, Nedlands, WA, Australia
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Samelli AG, Santos IS, Moreira RR, Rabelo CM, Rolim LP, Bensenõr IJ, Lotufo PA. Diabetes mellitus and sensorineural hearing loss: is there an association? Baseline of the Brazilian Longitudinal Study of Adult Health (ELSA-Brasil). Clinics (Sao Paulo) 2017; 72:5-10. [PMID: 28226026 PMCID: PMC5251196 DOI: 10.6061/clinics/2017(01)02] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/07/2016] [Accepted: 09/14/2016] [Indexed: 11/18/2022] Open
Abstract
OBJECTIVES: Although several studies have investigated the effects of diabetes on hearing loss, the relationship between these two conditions remains unclear. Some studies have suggested that diabetes may cause sensorineural hearing loss, whereas others have failed to find an association. The biggest challenge in investigating the association between diabetes and hearing loss is the presence of confounding variables and the complexity of the auditory system. Our study investigated the association between diabetes and sensorineural hearing loss. We evaluated the influence of time from diabetes diagnosis on this association after controlling for age, gender, and hypertension diagnosis and excluding those subjects with exposure to noise. METHODS: This cross-sectional study evaluated 901 adult and elderly Brazilian Longitudinal Study of Adult Health (ELSA-Brasil) participants from São Paulo, Brazil who underwent audiometry testing as part of ELSA-Brasil's baseline assessment. RESULTS: Hearing thresholds and speech test results were significantly worse in the group with diabetes than in the group without diabetes. However, no significant differences were found between participants with and without diabetes after adjusting for age, gender, and the presence of hypertension. Hearing thresholds were not affected by occupational noise exposure in the groups with and without diabetes. In addition, no association between the duration of diabetes and hearing thresholds was observed after adjusting for age, gender, and hypertension. CONCLUSION: We found no association between the duration of diabetes and worse hearing thresholds after models were adjusted for age, gender, and the presence of hypertension.
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Affiliation(s)
- Alessandra G Samelli
- Departamento de Fisioterapia, Fonoaudiologia e Terapia Ocupacional, Faculdade de Medicina da Universidade de São Paulo, São Paulo/SP, Brazil
- *Corresponding author. E-mail:
| | - Itamar S Santos
- Centro de Pesquisa Clínica e Epidemiológica, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo/SP, Brazil
- Departamento de Clínica Médica, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo/SP, Brazil
| | - Renata R Moreira
- Serviço de Audiologia, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo/SP, Brazil
| | - Camila M Rabelo
- Departamento de Fisioterapia, Fonoaudiologia e Terapia Ocupacional, Faculdade de Medicina da Universidade de São Paulo, São Paulo/SP, Brazil
| | - Laurie P Rolim
- Departamento de Fisioterapia, Fonoaudiologia e Terapia Ocupacional, Faculdade de Medicina da Universidade de São Paulo, São Paulo/SP, Brazil
| | - Isabela J Bensenõr
- Centro de Pesquisa Clínica e Epidemiológica, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo/SP, Brazil
- Departamento de Clínica Médica, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo/SP, Brazil
| | - Paulo A Lotufo
- Centro de Pesquisa Clínica e Epidemiológica, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo/SP, Brazil
- Departamento de Clínica Médica, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo/SP, Brazil
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Jung DJ, Lee JH, Kim T, Kim HG, Lee JY, Lee KY. Association Between Hearing Impairment and Albuminuria With or Without Diabetes Mellitus. Clin Exp Otorhinolaryngol 2016; 10:221-227. [PMID: 28002925 PMCID: PMC5545699 DOI: 10.21053/ceo.2016.00787] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2015] [Revised: 11/05/2016] [Accepted: 11/17/2016] [Indexed: 01/05/2023] Open
Abstract
Objectives Few studies have evaluated the accurate association between hearing loss (HL) and albuminuria in patients with or without diabetes mellitus (DM). The aim of our study was to identify the clinical effects of albuminuria on HL with or without DM. Methods This study included 9,762 patients from the Korean National Health and Nutrition Examination Survey between 2011 and 2013. Participants were divided into 4 groups based on DM and urine albumin/creatinine ratio levels: group 1 included participants with neither DM nor albuminuria, group 2 included participants without DM and with albuminuria, group 3 included patients with DM and without albuminuria, and group 4 included patients with both DM and albuminuria. The low- or mid-frequency and high-frequency, and average hearing threshold values were obtained. Results There were 7,508, 545, 1,325, and 384 participants in groups 1, 2, 3, and 4, respectively. Univariate and multivariate analyses showed that the 3 hearing thresholds in group 1 were the lowest and those in group 4 were the highest among the 4 groups. No significant differences were observed in those thresholds between groups 2 and 3. Group 4 was associated with HL compared with the other groups, but moderate to severe HL was not associated with DM or albuminuria. Conclusion The presence of albuminuria was associated with a modest effect on hearing thresholds regardless of presence of DM.
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Affiliation(s)
- Da Jung Jung
- Department of Otorhinolaryngology-Head and Neck Surgery, Kyungpook National University Hospital, Kyungpook National University School of Medicine, Daegu, Korea
| | - Jae Ho Lee
- Department of Otorhinolaryngology-Head and Neck Surgery, Kyungpook National University Hospital, Kyungpook National University School of Medicine, Daegu, Korea
| | - Taehoon Kim
- Department of Otorhinolaryngology-Head and Neck Surgery, Kyungpook National University Hospital, Kyungpook National University School of Medicine, Daegu, Korea
| | - Hak-Geon Kim
- Department of Otorhinolaryngology-Head and Neck Surgery, Kyungpook National University Hospital, Kyungpook National University School of Medicine, Daegu, Korea
| | - Jae Young Lee
- Department of Otorhinolaryngology-Head and Neck Surgery, Kyungpook National University Hospital, Kyungpook National University School of Medicine, Daegu, Korea
| | - Kyu-Yup Lee
- Department of Otorhinolaryngology-Head and Neck Surgery, Kyungpook National University Hospital, Kyungpook National University School of Medicine, Daegu, Korea
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Bainbridge KE, Cowie CC, Gonzalez F, Hoffman HJ, Dinces E, Stamler J, Cruickshanks KJ. Risk Factors for Hearing Impairment among Adults with Diabetes: The Hispanic Community Health Study/Study of Latinos (HCHS/SOL). J Clin Transl Endocrinol 2016; 6:15-22. [PMID: 28239560 PMCID: PMC5321611 DOI: 10.1016/j.jcte.2016.09.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2016] [Revised: 08/30/2016] [Accepted: 09/06/2016] [Indexed: 01/22/2023] Open
Abstract
AIM The aim was to examine risk factors for hearing impairment among Hispanic/Latino adults with diabetes. METHODS Findings are based on 3384 participants aged 18-76 years with diagnosed or previously undetected diabetes who completed audiometric testing as part of the Hispanic Community Health Study/Study of Latinos. We defined hearing impairment as the pure-tone average (PTA) >25 decibels hearing level [dB HL] of pure-tone thresholds at high frequencies (3000, 4000, 6000, and 8000 Hz) in the worse ear and defined a second hearing impairment outcome with the additional requirement of PTA >25 dB HL of low/mid-frequency (500, 1000, and 2000 Hz) thresholds in the worse ear. We identified independent associations using logistic regression. RESULTS Controlling for age and Hispanic/Latino background, prevalence ratios for hearing impairment in the high plus low/mid frequencies were 1.35 (95% CI 1.07, 1.71) for current smoking, 1.64 (1.14, 2.38) for alcohol consumption (≥ 14 drinks/week for men or ≥ 7 drinks/week for women), and 1.29 (1.06, 1.56) for triglycerides ≥ 150 mg/dL. For high-frequency only hearing impairment, the prevalence ratio for estimated glomerular filtration rate 30-59 mL/min/1.73m2 was 1.23 (1.03, 1.47) adjusted for age and sex. People with family income less than $20,000 had almost twice the prevalence of hearing impairment (PR=1.93 (1.34, 2.78)) as people with income over $40,000. CONCLUSIONS Current smoking, alcohol consumption, high triglycerides, and chronic kidney disease are potentially preventable correlates of hearing impairment for persons with diabetes. Low income is a marker of increased likelihood of hearing impairment.
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Affiliation(s)
| | - Catherine C. Cowie
- National Institute of Diabetes and Digestive and Kidney Diseases, NIH, USA
| | - Franklyn Gonzalez
- Department of Biostatistics, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, USA
| | - Howard J. Hoffman
- National Institute on Deafness and Other Communication Disorders, NIH, USA
| | - Elizabeth Dinces
- Department of Otolaryngology-Head and Neck Surgery, Albert Einstein College of Medicine, USA
| | - Jeremiah Stamler
- Department of Preventive Medicine, Northwestern University Feinberg School of Medicine, USA
| | - Karen J. Cruickshanks
- Department of Population Health Sciences, University of Wisconsin School of Medicine and Public Health, USA
- Department of Ophthalmology and Visual Science, University of Wisconsin School of Medicine and Public Health, USA
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Tsuda J, Sugahara K, Hori T, Kanagawa E, Takaki E, Fujimoto M, Nakai A, Yamashita H. A study of hearing function and histopathologic changes in the cochlea of the type 2 diabetes model Tsumura Suzuki obese diabetes mouse. Acta Otolaryngol 2016; 136:1097-1106. [PMID: 27308832 DOI: 10.1080/00016489.2016.1195012] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
OBJECTIVES This study used Tsumura Suzuki Obese Diabetes (TSOD) mice as a spontaneous type 2 diabetes model and Tsumura Suzuki Non-obesity (TSNO) mice as controls to investigate factors involved in the onset of hearing impairment. METHOD Body weight, blood glucose levels, and auditory brainstem responses (ABRs) were measured. The cochleae were excised and evaluated histopathologically. RESULTS The TSOD mice showed significant hyperglycemia at 2-7 months and severe obesity at 5-10 months; significantly elevated ABR thresholds at 8-10 months; and the capillary lumens in the cochlea stria vascularis were narrower in the TSOD mice than in the TSNO mice. At 17 months, India ink vascular staining of the TSOD mice's cochleae revealed decreased capillary density in the stria vascularis. The vascular area of capillaries in the stria vascularis and the vascular area were significantly smaller in TSOD mice. Histopathological analysis showed vessel wall thickening in the modiolus and narrowed capillaries in the stria vascularis, suggesting reduced blood flow to the inner ear. CONCLUSION The diabetes mice model used in our study showed early age-associated hearing loss, and histopathology showed findings of vessel wall thickening in the modiolus, narrowing of capillaries in the stria vascularis, and chronically reduced blood flow in the cochlea.
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Meehan DT, Delimont D, Dufek B, Zallocchi M, Phillips G, Gratton MA, Cosgrove D. Endothelin-1 mediated induction of extracellular matrix genes in strial marginal cells underlies strial pathology in Alport mice. Hear Res 2016; 341:100-108. [PMID: 27553900 PMCID: PMC5086449 DOI: 10.1016/j.heares.2016.08.003] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/20/2016] [Revised: 07/21/2016] [Accepted: 08/15/2016] [Indexed: 12/20/2022]
Abstract
Alport syndrome, a type IV collagen disorder, manifests as glomerular disease associated with hearing loss with thickening of the glomerular and strial capillary basement membranes (SCBMs). We have identified a role for endothelin-1 (ET-1) activation of endothelin A receptors (ETARs) in glomerular pathogenesis. Here we explore whether ET-1 plays a role in strial pathology. Wild type (WT) and Alport mice were treated with the ETAR antagonist, sitaxentan. The stria vascularis was analyzed for SCBM thickness and for extracellular matrix (ECM) proteins. Additional WT and Alport mice were exposed to noise or hypoxia and the stria analyzed for hypoxia-related and ECM genes. A strial marginal cell line cultured under hypoxic conditions, or stimulated with ET-1 was analyzed for expression of hypoxia-related and ECM transcripts. Noise exposure resulted in significantly elevated ABR thresholds in Alport mice relative to wild type littermates. Alport stria showed elevated expression of collagen α1(IV), laminin α2, and laminin α5 proteins relative to WT. SCBM thickening and elevated ECM protein expression was ameliorated by ETAR blockade. Stria from normoxic Alport mice and hypoxic WT mice showed upregulation of hypoxia-related, ECM, and ET-1 transcripts. Both ET-1 stimulation and hypoxia up-regulated ECM transcripts in cultured marginal cells. We conclude that ET-1 mediated activation of ETARs on strial marginal cells results in elevated expression of ECM genes and thickening of the SCBMs in Alport mice. SCBM thickening results in hypoxic stress further elevating ECM and ET-1 gene expression, exacerbating strial pathology.
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Affiliation(s)
| | | | - Brianna Dufek
- Boys Town National Research Hospital, Omaha, NE, USA
| | | | | | | | - Dominic Cosgrove
- Boys Town National Research Hospital, Omaha, NE, USA; University of Nebraska Medical Center, Omaha, NE, USA.
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Ferreira JM, Câmara MFES, Almeida PCD, Brandão Neto J, Silva CABD. Características audiológicas de pacientes com diabetes mellitus Tipo 2. REVISTA CEFAC 2016. [DOI: 10.1590/1982-0216201618522415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
RESUMO Objetivos: identificar as características audiológicas de pacientes com diabetes mellitus tipo 2. Métodos: estudo transversal, realizado em unidade de atenção secundária para diabetes em Fortaleza, de abril a julho de 2010. Amostra composta por 152 pacientes diabéticos tipo 2, independente do sexo, entre 36 e 60 anos. Realizou-se audiometria tonal liminar (ATL), emissões otoacústicas evocadas por estímulo transiente (EOAT) e emissões otoacústicas evocadas-produto de distorção (EOAPD). Resultados: associação da idade e do tempo de diagnóstico com a presença de perda auditiva, e do tempo de diagnóstico com a ausência de EOAPD. Observou-se perda auditiva sensorioneural em 63,2% dos pacientes, das quais 71,9% eram bilaterais e 75% simétricas. Aproximadamente, 50% das perdas auditivas apresentaram configuração plana. As EOAT estavam ausentes em 75% dos pacientes e as EOAPD em 78,9%. Houve ausência de emissões otoacústicas na presença de ATL normal, em média, em 32% dos pacientes à direita e 48% à esquerda. Já a presença de emissões otoacústicas na ocorrência de perda auditiva foi observada em, aproximadamente, 30% dos pacientes para EOAT e 14% para EOAPD à direita; e 25% para EOAT e 11% para EOAPD à esquerda. Conclusão: predomínio de perda auditiva sensorioneural bilateral simétrica com configuração plana, e ausência de EOAT e EOAPD. A análise da associação dos resultados da ATL e das emissões otoacústicas sugere prejuízo das células ciliadas externas da cóclea ou possível neuropatia auditiva. Tais achados justificariam o monitoramento da audição destes pacientes, bem como a realização de testes específicos para avaliação do sistema auditivo central.
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Lasagni A, Giordano P, Lacilla M, Raviolo A, Trento M, Camussi E, Grassi G, Charrier L, Cavallo F, Albera R, Porta M, Zanone MM. Cochlear, auditory brainstem responses in Type 1 diabetes: relationship with metabolic variables and diabetic complications. Diabet Med 2016; 33:1260-7. [PMID: 26605750 DOI: 10.1111/dme.13039] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 11/18/2015] [Indexed: 01/29/2023]
Abstract
AIMS Few studies have analysed the presence of hearing abnormalities in diabetes. We assessed the presence of subclinical auditory alterations and their possible association with early vascular and neurological dysfunction in young adults with Type 1 diabetes of long duration. METHODS Thirty-one patients with Type 1 diabetes (mean age 33 ± 2.3 years, disease duration 25.7 ± 4.2 years) and 10 healthy controls underwent pure tone audiometry (PTA), distortion product otoacoustic emission (DPOAE) and auditory brainstem response (ABR) analyses. Associations with metabolic variables and chronic complications were explored. RESULTS Compared with healthy controls, patients with diabetes had significantly higher mean hearing thresholds, although still within the normoacusic range. DPOAE intensities at medium frequencies (2.8-4 kHz) were significantly lower in patients with diabetes. In ABR, in addition to waves I, III and V, we observed the appearance of a visible wave IV in patients with diabetes compared with controls (prevalence 61% vs. 10%, P < 0.05), and its appearance was related to a prolonged I-V interval (4.40 ± 0.62 ms vs. 4.19 ± 0.58 ms, P < 0.05). Diastolic blood pressure was higher in people with abnormal DPOAE (P < 0.05), whereas systolic blood pressure correlated with wave V and interpeak I-V interval latencies. A trend towards an association between evidence of wave IV and the presence of somatic neuropathy or abnormal cardiovascular autonomic tests was observed. CONCLUSIONS Young adults with long-term Type 1 diabetes have subclinical abnormalities in qualitative auditory perception, despite normal hearing thresholds, which might reflect neuropathic and/or vascular alterations.
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Affiliation(s)
- A Lasagni
- Department of Medical Sciences, University of Turin, Turin, Italy
| | - P Giordano
- Department of Surgical Sciences, University of Turin, Turin, Italy
| | - M Lacilla
- Department of Surgical Sciences, University of Turin, Turin, Italy
| | - A Raviolo
- Department of Medical Sciences, University of Turin, Turin, Italy
| | - M Trento
- Department of Medical Sciences, University of Turin, Turin, Italy
| | - E Camussi
- Department of Public Health and Pediatric Sciences, University of Turin, Turin, Italy
| | - G Grassi
- Department of Medical Sciences, University of Turin, Turin, Italy
| | - L Charrier
- Department of Public Health and Pediatric Sciences, University of Turin, Turin, Italy
| | - F Cavallo
- Department of Public Health and Pediatric Sciences, University of Turin, Turin, Italy
| | - R Albera
- Department of Surgical Sciences, University of Turin, Turin, Italy
| | - M Porta
- Department of Medical Sciences, University of Turin, Turin, Italy
| | - M M Zanone
- Department of Medical Sciences, University of Turin, Turin, Italy
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Seo M, Lee YS, Moon SS. Association of hearing impairment with insulin resistance, β-cell dysfunction and impaired fasting glucose before onset of diabetes. Diabet Med 2016; 33:1275-82. [PMID: 26871458 DOI: 10.1111/dme.13096] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 02/09/2016] [Indexed: 11/29/2022]
Abstract
AIM Diabetes is a known risk factor for hearing impairment. No study regarding the association of insulin resistance (IR), β-cell dysfunction and impaired fasting glucose (IFG) with hearing impairment has been reported in the population without diabetes. We examined these associations using a representative sample of the Korean population. METHODS Participants included 1589 males and 2496 females, who were ≥ 20 years of age and without diabetes from the Korea National Health and Nutritional Examination Surveys of the Korean population (2010). Audiometric tests and laboratory examinations were performed. Homeostasis model assessments of IR and β-cell function (HOMA-IR and HOMA-β) were calculated. RESULTS The prevalence of both high- and low-/mid-frequency hearing impairment among subjects with IFG was higher compared with those with normal glycaemia (42.2% vs. 24.5%, 14.7% vs. 7.8%, respectively). After adjustment for age, HOMA-IR and HOMA-β showed significant association with high-frequency hearing impairment in males. In the multiple logistic regression analyses adjusting for confounding variables, the presence of IFG, higher HOMA-IR and lower HOMA-β remained as independent risk factors for high-frequency mild hearing impairment in males < 70 years [odds ratio (OR) 1.441, 95% confidence interval (95% CI), 1.056 to 1.967; OR, 1.448, 95% CI, 1.039 to 2.101; and OR, 0.447, 95% CI, 0.274 to 0.729, P < 0.05, respectively). CONCLUSIONS IR, β-cell dysfunction and IFG are associated with high-frequency mild hearing impairment in the male population < 70 years before the onset of diabetes.
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Affiliation(s)
- M Seo
- Medical Institute of Dongguk University, College of Medicine, Dongguk University, Gyeongju, South Korea
| | - Y-S Lee
- Medical Institute of Dongguk University, College of Medicine, Dongguk University, Gyeongju, South Korea
- Department of Internal Medicine, College of Medicine, Dongguk University, Gyeongju, South Korea
| | - S-S Moon
- Medical Institute of Dongguk University, College of Medicine, Dongguk University, Gyeongju, South Korea
- Department of Internal Medicine, College of Medicine, Dongguk University, Gyeongju, South Korea
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Diabetes-Associated Changes in Cortical Auditory-Evoked Potentials in Relation to Normal Aging. Ear Hear 2015; 37:e173-87. [PMID: 26656318 DOI: 10.1097/aud.0000000000000255] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
OBJECTIVES (1) To characterize the influence of type 2 diabetes mellitus (DM) on cortical auditory-evoked potentials (CAEPs) separate from the effects of normal aging, and (2) to determine whether the disease-related effects are modified by insulin dependence. DESIGN A cross-sectional study was conducted in a large cohort of Veterans to investigate the relationships among type 2 DM, age, and CAEPs in randomly selected participants with (N = 108) and without (N = 114) the disease and who had no more than a moderate hearing loss. Participants with DM were classified as insulin-dependent (IDDM, N = 47) or noninsulin-dependent (NIDDM, N = 61). Other DM measures included concurrent serum glucose, HbA1c, and duration of disease. CAEPs were evoked using a passive homogeneous paradigm (single repeating stimulus) by suprathreshold tones presented to the right ear, left ear, or both ears. Outcome measures were adjusted for the pure-tone threshold average for frequencies of 0.5, 1, and 2 kHz and analyzed for differences in age effects between participant groups using multiple regression. RESULTS There is little variation across test ear conditions (left, right, binaural) on any CAEP peak in any of the groups. Among no-DM controls, P2 latency increases about 9 msec per decade of life. DM is associated with an additional delay in the P2 latency of 7 and 9 msec for the IDDM and NIDDM groups, respectively. Moreover, the slope of the function relating P2 latency with age is similar across participant groups and thus the DM effect appears constant across age. Effects on N1 latency are considerably weaker, with age effects of less than 4 msec per decade across all groups, and DM effects of only 2 (IDDM) or 3 msec (NIDDM). In the NIDDM group, the slope relating N1 latency to age is steeper relative to that observed for the no-DM group, providing some evidence of accelerated "aging" for this CAEP peak. DM does not substantially reduce N1-P2 amplitude and age relationships with N1-P2 amplitude are effectively absent. There is no association between pure-tone average at 0.5, 1, and 2 kHz and any aspect of CAEPs in this cohort. CONCLUSIONS In a large cohort of Veterans, we found that type 2 DM is associated with prolonged N1 and P2 latencies regardless of whether insulin is required to manage the disease and independent of peripheral hearing thresholds. The DM-related effects on CAEP latencies are threefold greater for P2 compared with N1, and there is little support that at the cortical level, IDDM participants had poorer responses compared with NIDDM participants, although their responses were more variable. Overall, these results indicate that DM is associated with slowed preattentive neural conduction. Moreover, the observed 7 to 9 msec P2 latency delay due to DM is substantial compared with normal age changes in P2, which are 9 msec per decade of life in this cohort. Results also suggest that whereas N1 latency changes with age are more pronounced among individuals with DM versus without DM, there was no evidence for more rapid aging of P2 among patients with DM. Thus, the damage responsible for the major DM-related differences may occur early in the DM disease process. These cross-sectional results should be verified using a longitudinal study design.
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Lin CF, Lee KJ, Yu SS, Lin YS. Effect of comorbid diabetes and hypercholesterolemia on the prognosis of idiopathic sudden sensorineural hearing loss. Laryngoscope 2015; 126:142-9. [PMID: 25945947 DOI: 10.1002/lary.25333] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2015] [Revised: 03/04/2015] [Accepted: 03/23/2015] [Indexed: 11/12/2022]
Abstract
OBJECTIVES We tested the hypothesis that comorbid diseases significantly affect the prognosis of sudden sensorineural hearing loss (ISSNHL). STUDY DESIGN A retrospective cohort study. METHODS The records of patients newly diagnosed with ISSNHL and treated with steroid prednisolone in a tertiary referral center between January 2003 and December 2013 were retrospectively reviewed. Pretreatment and posttreatment hearing levels were evaluated using pure-tone average (PTA) and word recognition score (WRS). The comorbidities of diabetes, hypertension, coronary artery disease, hypercholesterolemia, cerebrovascular disease, chronic kidney disease, and anemia were identified. We examined the effects of these comorbid diseases on the prognosis of ISSNHL 2 months posttreatment. RESULTS Regression analyses adjusted for gender, age, pretreatment hearing, treatment delay time, and all the comorbidities showed that the probability of major improvement in the PTA was significantly higher in patients without diabetes compared to those with diabetes (univariate odds ratio [OR], 1.90; 95% confidence interval (CI), 1.25-2.90; multivariate OR, 1.69; 95% CI, 1.03-2.77). Major (≥ 90%) and moderate (50%-89% improvement of the PTA, but with a remaining hearing loss of > 10 dB) improvement in the PTA was significantly higher in patients without hypercholesterolemia compared to those with hypercholesterolemia (univariate OR, 1.78; 95% CI, 1.13-2.80; multivariate OR, 1.70; 95% CI, 1.02-2.84). There was, however, no significant difference in the distribution of major (≥ 90%), moderate (50%-89%), and minor (< 50%) improvement in the posttreatment WRS for these comorbid diseases. CONCLUSIONS Comorbid diabetes or hypercholesterolemia may indicate a smaller probability of major or moderate PTA improvement for patients with ISSNHL.
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Affiliation(s)
- Chang-Fu Lin
- Department of Otolaryngology, Chi Mei Medical Center, Yongkang District, Tainan City
| | - Kuan-Ji Lee
- Department of Otolaryngology, Chi Mei Medical Center, Yongkang District, Tainan City
| | - Shiou-Shyan Yu
- Department of Otolaryngology, Chi Mei Medical Center, Yongkang District, Tainan City
| | - Yung-Song Lin
- Department of Otolaryngology, Chi Mei Medical Center, Yongkang District, Tainan City.,Center of General Education, Southern Taiwan University of Science and Technology, Tainan.,Department of Otolaryngology, School of Medicine, Taipei Medical University, Taipei, Taiwan
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Cruickshanks KJ, Nondahl DM, Dalton DS, Fischer ME, Klein BE, Klein R, Nieto FJ, Schubert CR, Tweed TS. Smoking, central adiposity, and poor glycemic control increase risk of hearing impairment. J Am Geriatr Soc 2015; 63:918-24. [PMID: 25953199 PMCID: PMC4439261 DOI: 10.1111/jgs.13401] [Citation(s) in RCA: 115] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
OBJECTIVES To determine associations between smoking, adiposity, diabetes mellitus, and other risk factors for cardiovascular disease (CVD) and the 15-year incidence of hearing impairment (HI). DESIGN A longitudinal population-based cohort study (1993-95 to 2009-10), the Epidemiology of Hearing Loss Study (EHLS). SETTING Beaver Dam, Wisconsin. PARTICIPANTS Participants in the Beaver Dam Eye Study (1988-90; residents of Beaver Dam, WI, aged 43-84 in 1987-88) were eligible for the EHLS. There were 1,925 participants with normal hearing at baseline. MEASUREMENTS Fifteen-year cumulative incidence of HI (pure-tone average of hearing thresholds at 0.5, 1, 2, and 4 kHz greater than 25 decibels hearing level in either ear). Cigarette smoking, exercise, and other factors were ascertained according to questionnaire. Blood pressure, waist circumference, body mass index, and glycosylated hemoglobin were measured. RESULTS Follow-up examinations (≥1) were obtained from 87.2% (n=1,678; mean baseline age 61). The 15-year cumulative incidence of HI was 56.8%. Adjusting for age and sex, current smoking (hazard ratio (HR)=1.31, P=.048), education (<16 years; HR=1.35, P=.01), waist circumference (HR=1.08 per 10 cm, P=.02), and poorly controlled diabetes mellitus (HR=2.03, P=.048) were associated with greater risk of HI. Former smokers and people with better-controlled diabetes mellitus were not at greater risk. CONCLUSION Smoking, central adiposity, and poorly controlled diabetes mellitus predicted incident HI. These well-known risk factors for CVD suggest that vascular changes may contribute to HI in aging. Interventions targeting reductions in smoking and adiposity and better glycemic control in people with diabetes mellitus may help prevent or delay the onset of HI.
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Affiliation(s)
- Karen J. Cruickshanks
- Department of Ophthalmology and Visual Sciences, University of Wisconsin-Madison, Madison, Wisconsin
- Department of Population Health Sciences, University of Wisconsin-Madison, Madison, Wisconsin
| | - David M. Nondahl
- Department of Ophthalmology and Visual Sciences, University of Wisconsin-Madison, Madison, Wisconsin
| | - Dayna S. Dalton
- Department of Ophthalmology and Visual Sciences, University of Wisconsin-Madison, Madison, Wisconsin
| | - Mary E. Fischer
- Department of Ophthalmology and Visual Sciences, University of Wisconsin-Madison, Madison, Wisconsin
| | - Barbara E.K. Klein
- Department of Ophthalmology and Visual Sciences, University of Wisconsin-Madison, Madison, Wisconsin
| | - Ronald Klein
- Department of Ophthalmology and Visual Sciences, University of Wisconsin-Madison, Madison, Wisconsin
| | - F. Javier Nieto
- Department of Population Health Sciences, University of Wisconsin-Madison, Madison, Wisconsin
| | - Carla R. Schubert
- Department of Ophthalmology and Visual Sciences, University of Wisconsin-Madison, Madison, Wisconsin
| | - Ted S. Tweed
- Department of Ophthalmology and Visual Sciences, University of Wisconsin-Madison, Madison, Wisconsin
- Department of Communication Sciences and Disorders, University of Wisconsin-Madison, Madison, Wisconsin
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