1
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Hsieh PS, Hwang SR, Hwang SW, Hwang JH. Plasma Glial Cell-Derived Neurotrophic Factor and Insulin-like Growth Factor-1 Levels Were Not Correlated with the Severity of Age-Related Hearing Impairment in Humans. ACS OMEGA 2024; 9:1757-1761. [PMID: 38222583 PMCID: PMC10785095 DOI: 10.1021/acsomega.3c08354] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Revised: 11/24/2023] [Accepted: 11/28/2023] [Indexed: 01/16/2024]
Abstract
The relationship between plasma glial cell-derived neurotrophic factor (GDNF) or insulin-like growth factor-1 (IGF-1) levels and age-related hearing impairment (ARHI) has not been reported in humans. By cross-sectional design, 268 subjects older than 33, with normal cognitive function and normal or symmetric sensorineural hearing loss, were selected randomly. Multivariate linear regression analysis was performed to test the impact of the plasma GDNF or IGF-1 level on the pure tone threshold of low frequencies (PTA-low) and high frequencies (PTA-high), respectively. Results showed that plasma GDNF and IGF-1 levels decreased with age without statistical significance. Multivariate linear regression analysis showed that GDNF or IGF-1 levels were not significantly correlated with PTA-low or PTA-high after adjusting age, gender, body mass index, systemic diseases, habits, and noise exposure. In conclusion, plasma GDNF or IGF-1 levels were not associated with the severity of ARHI in humans. However, these findings did not support the roles of GDNF or IGF-1 genotypes on hearing.
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Affiliation(s)
- Pei-Shan Hsieh
- Department
of Medical Research, Dalin Tzu Chi Hospital,
Buddhist Tzu Chi Medical Foundation, Chiayi 622, Taiwan
| | - Shang-Rung Hwang
- Department
of Pharmacy, Chia Nan University of Pharmacy
& Science, Tainan 71710, Taiwan
| | - Sheng-Wei Hwang
- School
of Medicine, National Yang Ming Chiao Tung
University, Taipei 112, Taiwan
| | - Juen-Haur Hwang
- Department
of Otolaryngology-Head and Neck Surgery, Dalin Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Chiayi 622, Taiwan
- School
of Medicine, Tzu Chi University, Hualien970,Taiwan
- Department
of Medical Research, China Medical University
Hospital, China Medical University, Taichung404,Taiwan
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2
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Hu S, Sun Q, Xu F, Jiang N, Gao J. Age-related hearing loss and its potential drug candidates: a systematic review. Chin Med 2023; 18:121. [PMID: 37730634 PMCID: PMC10512576 DOI: 10.1186/s13020-023-00825-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2023] [Accepted: 08/25/2023] [Indexed: 09/22/2023] Open
Abstract
BACKGROUND Age-related hearing loss (ARHL) is one of the main illnesses afflicting the aged population and has a significant negative impact on society, economy, and health. However, there is presently no appropriate therapeutic treatment of ARHL due to the absence of comprehensive trials. OBJECTIVES The goal of this review is to systematically evaluate and analyze recent statistics on the pathologic classifications, risk factors, treatment strategies, and drug candidates of ARHL, including that from traditional Chinese medicine (TCM), to provide potential new approaches for preventing and treating ARHL. METHODS Literature related to ARHL was conducted in databases such as PubMed, WOS, China National Knowledge Infrastructure (CNKI), and Wanfang from the establishment of the database to Jan, 2023. The pathology, causal factor, pathophysiological mechanism, treatment strategy, and the drug candidate of ARHL were extracted and pooled for synthesis. RESULTS Many hypotheses about the etiology of ARHL are based on genetic and environmental elements. Most of the current research on the pathology of ARHL focuses on oxidative damage, mitochondrial dysfunction, inflammation, cochlear blood flow, ion homeostasis, etc. In TCM, herbs belonging to the kidney, lung, and liver meridians exhibit good hearing protection. Seven herbs belonging to the kidney meridian, 9 belonging to the lung meridian, and 4 belonging to the liver meridian were ultimately retrieved in this review, such as Polygonum multiflorum Thunb., Panax ginseng C.A. Mey, and Pueraria lobata (Willd.) Ohwi. Their active compounds, 2,3,4',5-Tetrahydroxystilbene-2-O-D-glucoside, ginsenoside Rb1, and puerarin, may act as the molecular substance for their anti-ARHL efficacy, and show anti-oxidative, neuroprotective, anti-inflammatory, anti-apoptotic, or mitochondrial protective effects. CONCLUSION Anti-oxidants, modulators of mitochondrial function, anti-inflammation agents, vasodilators, K+ channel openers, Ca2+ channel blockers, JNK inhibitors, and nerve growth factors/neurotrophic factors all contribute to hearing protection, and herbs are an important source of potential anti-ARHL drugs.
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Affiliation(s)
- Shiyu Hu
- School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, 310053, Zhejiang, People's Republic of China
| | - Qingru Sun
- School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, 310053, Zhejiang, People's Republic of China
| | - Fei Xu
- School of Medical Technology and Information Engineering, Zhejiang Chinese Medical University, Hangzhou, 310053, Zhejiang, People's Republic of China
| | - Ninghua Jiang
- Department of Pharmacy, The Second Affiliated Hospital of Jiaxing University, Jiaxing, 314000, Zhejiang, People's Republic of China
| | - Jianli Gao
- School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, 310053, Zhejiang, People's Republic of China.
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3
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Effects of erinacine A-enriched Hericium erinaceus on elderly hearing-impaired patients: A double-blind, randomized, placebo-controlled clinical trial. J Funct Foods 2022. [DOI: 10.1016/j.jff.2022.105220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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4
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CPAP Treatment Improves Pure Tone Audiometry Threshold in Sensorineural Hearing Loss Patients with Sleep-Disordered Breathing. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph18136768. [PMID: 34202447 PMCID: PMC8297118 DOI: 10.3390/ijerph18136768] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/02/2021] [Revised: 06/08/2021] [Accepted: 06/21/2021] [Indexed: 11/17/2022]
Abstract
This article investigates the effects of continuous positive airway pressure (CPAP) on hearing impairment in sensorineural hearing loss (SNHL) patients with sleep-disordered breathing (SDB). This retrospective and observational study took place from September 2016 to February 2021, accumulating 77 subjects with SNHL and SDB (60.7 ± 11.1 years). Of which, 28 received CPAP treatment (63.0 ± 8.5 years). In our methodology, hearing thresholds at low, medium, high, and average frequencies are assessed by pure-tone audiometry at baseline (BL), three (3 m), six (6 m), and 12 (12 m) months. Our results show that the BL of at least three frequencies in all subjects is positively associated with old age, males, smoking, alcohol, coronary artery disease, hypertension, and apnea-hypopnea index [AHI] (all p < 0.05). Moreover, low, medium, and average frequencies are negatively correlated at CPAP-6 m (-5.60 ± 2.33, -5.82 ± 2.56, and -5.10 ± 2.26 dB; all p < 0.05) and CPAP-12 m (-7.97 ± 2.74, -8.15 ± 2.35, and -6.67 ± 2.37 dB; all p < 0.01) against corresponding measures of CPAP-BL. High, medium, and average frequencies positively correlated with age (p < 0.001 for high and average frequencies and <0.01 for medium frequencies). We conclude that in SNHL patients with SDB, hearing thresholds at low and medium frequencies improves under CPAP use after six months, which persists at least to the end of one year.
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5
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Chan YH, Liu TC, Liao CK, Cheng YF, Tsai CH, Lu YC, Hu CJ, Lin HJ, Lee YL, Wu CC, Hsu CJ. Consumption of betel quid contributes to sensorineural hearing impairment through arecoline-induced oxidative stress. Sci Rep 2019; 9:14554. [PMID: 31601870 PMCID: PMC6787045 DOI: 10.1038/s41598-019-49815-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2019] [Accepted: 08/22/2019] [Indexed: 11/09/2022] Open
Abstract
Betel quid is one of the most widely used psychoactive substances, and is consumed by approximately 10% of the world’s population. In addition to its carcinogenicity, betel quid has also been reported to affect many organs, including the brain, heart, lungs, gastrointestinal tract, and reproductive organs. As betel quid contains several neurotoxic ingredients, we hypothesize that it also possesses ototoxicity and may lead to sensorineural hearing impairment (SNHI). In this study, we investigated the contribution of betel quid consumption to SNHI in a large clinical cohort, and validated the pathogenetic mechanisms in ex vivo tissue explants. We enrolled a total of 2364 volunteers, and determined their audiologic results based on Z-scores converted from their original frequency-specific hearing thresholds. Using generalized linear regression, we identified a positive correlation between betel quid consumption and the Z-scores across different frequencies. Subsequently, we explored the toxicity of arecoline, the main neuroactive component of betel quid, on tissue explants from murine cochleae. Arecoline reduced cell activity in the explant cultures and induced apoptosis in the hair cells, probably through the effects of oxidative stress. These findings have expanded the potential hazards of betel quid to common neurological disorders, and provide insights into preventive strategies against SNHI caused by neurotoxic substances.
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Affiliation(s)
- Yen-Hui Chan
- Department of Otolaryngology, National Taiwan University Hospital, Taipei, Taiwan.,Department of Otolaryngology, Taichung Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Taichung, Taiwan
| | - Tien-Chen Liu
- Department of Otolaryngology, National Taiwan University Hospital, Taipei, Taiwan
| | - Chun-Kang Liao
- Department of Otolaryngology, National Taiwan University Hospital, Taipei, Taiwan
| | - Yen-Fu Cheng
- Department of Medical Research, Taipei Veterans General Hospital, Taipei, Taiwan.,Department of Otolaryngology-Head and Neck Surgery, Taipei Veterans General Hospital, Taipei, Taiwan.,School of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Ching-Hui Tsai
- Institute of Epidemiology and Preventive Medicine, College of Public Health, National Taiwan University, Taipei, Taiwan
| | - Ying-Chang Lu
- Department of Otolaryngology, National Taiwan University Hospital, Taipei, Taiwan
| | - Chin-Ju Hu
- Department of Otolaryngology, National Taiwan University Hospital, Taipei, Taiwan
| | - Hung-Ju Lin
- Health Management Center, National Taiwan University Hospital, Taipei, Taiwan
| | - Yungling Leo Lee
- Institute of Epidemiology and Preventive Medicine, College of Public Health, National Taiwan University, Taipei, Taiwan.,Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Chen-Chi Wu
- Department of Otolaryngology, National Taiwan University Hospital, Taipei, Taiwan. .,Department of Medical Genetics, National Taiwan University Hospital, Taipei, Taiwan.
| | - Chuan-Jen Hsu
- Department of Otolaryngology, National Taiwan University Hospital, Taipei, Taiwan.,Department of Otolaryngology, Taichung Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Taichung, Taiwan
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6
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Jayakody DMP, Friedland PL, Martins RN, Sohrabi HR. Impact of Aging on the Auditory System and Related Cognitive Functions: A Narrative Review. Front Neurosci 2018; 12:125. [PMID: 29556173 PMCID: PMC5844959 DOI: 10.3389/fnins.2018.00125] [Citation(s) in RCA: 95] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2017] [Accepted: 02/15/2018] [Indexed: 12/15/2022] Open
Abstract
Age-related hearing loss (ARHL), presbycusis, is a chronic health condition that affects approximately one-third of the world's population. The peripheral and central hearing alterations associated with age-related hearing loss have a profound impact on perception of verbal and non-verbal auditory stimuli. The high prevalence of hearing loss in the older adults corresponds to the increased frequency of dementia in this population. Therefore, researchers have focused their attention on age-related central effects that occur independent of the peripheral hearing loss as well as central effects of peripheral hearing loss and its association with cognitive decline and dementia. Here we review the current evidence for the age-related changes of the peripheral and central auditory system and the relationship between hearing loss and pathological cognitive decline and dementia. Furthermore, there is a paucity of evidence on the relationship between ARHL and established biomarkers of Alzheimer's disease, as the most common cause of dementia. Such studies are critical to be able to consider any causal relationship between dementia and ARHL. While this narrative review will examine the pathophysiological alterations in both the peripheral and central auditory system and its clinical implications, the question remains unanswered whether hearing loss causes cognitive impairment or vice versa.
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Affiliation(s)
- Dona M P Jayakody
- Clinical Research, Ear Science Institute Australia, Subiaco, WA, Australia.,School of Surgery, University of Western Australia, Perth, WA, Australia
| | - Peter L Friedland
- Clinical Research, Ear Science Institute Australia, Subiaco, WA, Australia.,School of Surgery, University of Western Australia, Perth, WA, Australia.,School of Medicine, University of Notre Dame Australia, Fremantle, WA, Australia
| | - Ralph N Martins
- Biomedical Sciences, Macquarie University, Sydney, NSW, Australia.,School of Medical and Health Sciences, Edith Cowan University, Joondalup, WA, Australia
| | - Hamid R Sohrabi
- Biomedical Sciences, Macquarie University, Sydney, NSW, Australia.,School of Medical and Health Sciences, Edith Cowan University, Joondalup, WA, Australia
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7
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Abstract
Grainyhead-like 2 is a human homolog of Drosophila grainyhead. It inhibits epithelial-to-mesenchymal transition that is necessary for cell migration, and it is involved in neural tube closure, epithelial morphogenesis, and barrier formation during embryogenesis by regulation of the expression of cell junction proteins such as E-cadherin and vimentin. Cancer shares many common characters with development such as epithelial-to-mesenchymal transition. In addition to its important role in development, grainyhead-like 2 is implicated in carcinogenesis as well. However, the reports on grainyhead-like 2 in various cancers are controversial. Grainyhead-like 2 can act as either a tumor suppressor or an oncogene with the mechanisms not well elucidated. In this review, we summarized recent progress on grainyhead-like 2 in development and cancer in order to get an insight into the regulation network of grainyhead-like 2 and understand the roles of grainyhead-like 2 in various cancers.
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Affiliation(s)
- Lijun Ma
- 1 Department of Oncology, Tongren Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, P.R. China
| | - Hongli Yan
- 3 Department of Laboratory Medicine, Changhai Hospital, The Second Military Medical University, Shanghai, P.R. China
| | - Hui Zhao
- 4 School of Biomedical Sciences, Faculty of Medicine, the Chinese University of Hong Kong, Hong Kong
| | - Jianmin Sun
- 2 Department of Pathogen Biology and Immunology, School of Basic Medical Sciences, Ningxia Medical University, Yinchuan, P.R. China.,5 Division of Translational Cancer Research, Department of Laboratory Medicine, Lund University, Lund, Sweden.,6 Lund Stem Cell Center, Department of Laboratory Medicine, Lund University, Lund, Sweden
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8
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Lin X, Teng Y, Lan J, He B, Sun H, Xu F. GRHL2 genetic polymorphisms may confer a protective effect against sudden sensorineural hearing loss. Mol Med Rep 2016; 13:2857-63. [PMID: 26847018 DOI: 10.3892/mmr.2016.4871] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2015] [Accepted: 12/15/2015] [Indexed: 11/06/2022] Open
Abstract
Genetic polymorphisms in grainyhead‑like 2 (GRHL2) variants were examined for their suspected association with sudden sensorineural hearing loss (SSHL). Between January 2009 and April 2014, 190 patients with SSHL, who were diagnosed at the Departments of Otorhinolaryngology Head and Neck Surgery at Kaihua People's Hospital and Hangzhou First People's Hospital, were selected for the present study and defined as the SSHL group. A group of 210 healthy individuals were defined as the control group. Polymerase chain reaction (PCR)‑restriction fragment length polymorphism was used to detect GRHL2 genotypes, using genomic DNA isolated from peripheral blood as PCR templates. GRHL2 rs611419 genetic polymorphisms conferred a protective effect against SSHL (AT+TT vs. AA: OR=0.63, 95% CI=0.41‑0.98, P=0.038). In addition, rs10955255 polymorphisms were associated with a reduced risk of SSHL (AA vs. GG: OR=0.54, 95% CI=0.31‑0.95, P=0.032; GA+AA vs. GG: OR=0.58, 95% CI=0.38‑0.89, P=0.012). Combined genotypes of rs611419, rs10955255 and rs6989650 in the GRHL2 gene are also associated with a reduced risk of SSHL (P=0.035). In subjects who consumed alcohol, co‑occurrence of 3‑8 variant alleles conferred increased resistance to SSHL, compared with the occurrence of 0‑2 variant alleles (OR=0.40, 95% CI=0.21‑0.76, P=0.004). GRHL2 genetic polymorphisms, rs611419 and rs10955255, have a protective role against SSHL and reduce the risk of SSHL. However, rs6989650 is not associated with SSHL.
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Affiliation(s)
- Xiaojiang Lin
- Department of Otorhinolaryngology Head and Neck Surgery, Kaihua People's Hospital, Quzhou, Zhejiang 324300, P.R. China
| | - Yaoshu Teng
- Department of Otorhinolaryngology Head and Neck Surgery, Hangzhou First People's Hospital, Hangzhou, Zhejiang 310006, P.R. China
| | - Jinshan Lan
- Department of Otorhinolaryngology, Quzhou People's Hospital, Quzhou, Zhejiang 324300, P.R. China
| | - Benjun He
- Department of Otorhinolaryngology Head and Neck Surgery, Kaihua People's Hospital, Quzhou, Zhejiang 324300, P.R. China
| | - Huijuan Sun
- Department of Otorhinolaryngology Head and Neck Surgery, Kaihua People's Hospital, Quzhou, Zhejiang 324300, P.R. China
| | - Fenglin Xu
- Department of Otorhinolaryngology Head and Neck Surgery, Kaihua People's Hospital, Quzhou, Zhejiang 324300, P.R. China
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9
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Wu CC, Tsai CH, Lu YC, Lin HC, Hwang JH, Lin YH, Yang WS, Chen PJ, Liao WC, Lee YL, Liu TC, Hsu CJ. Contribution of adiponectin and its type 1 receptor to age-related hearing impairment. Neurobiol Aging 2015; 36:2085-93. [PMID: 25911279 DOI: 10.1016/j.neurobiolaging.2015.02.030] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2014] [Revised: 02/25/2015] [Accepted: 02/28/2015] [Indexed: 01/29/2023]
Abstract
Age-related hearing impairment (ARHI) is a complex neurodegenerative disorder caused by a combination of environmental and genetic factors. We have reported previously that obesity increases the risk for ARHI, and that plasma levels of adiponectin are associated with ARHI. In the present study, we further explored the role of adiponectin in the pathophysiology of ARHI by investigating the genotypes of ADIPOQ and ADIPOR1, the genes of adiponectin and its type 1 receptor, respectively. A total of 1682 volunteers were enrolled, and their audiological phenotypes were determined according to the z scores converted from their original frequency-specific hearing thresholds. A total of 9 tag-single nucleotide polymorphisms (tagSNPs) in ADIPOQ and 4 tagSNPs in ADIPOR1 were genotyped, and the genotypes were correlated to the audiological phenotypes under the assumption of various inheritance models. Significant associations were identified between certain ADIPOQ tagSNPs and z scores under dominant, codominant, or additive models, whereas no association was identified between ADIPOR1 tagSNPs and z scores. The associations between ADIPOQ tagSNPs and z scores appear to exist only in subjects with specific ADIPOR1 genotypes, indicating an interaction between adiponectin and AdipoR1. Measurement of plasma adiponectin in 736 subjects revealed that ADIPOQ genotypes might exert their effects on hearing levels via modulation of plasma adiponectin levels. Subsequently, we confirmed the expression of AdipoR1 in the inner ear of mice, and demonstrated antiapoptotic effects of adiponectin in cochlear explant cultures. These results provide insights into the physiological function and potential clinical implications of adiponectin against ARHI.
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Affiliation(s)
- Chen-Chi Wu
- Department of Otolaryngology, National Taiwan University Hospital, Taipei, Taiwan; Department of Medical Genetics, National Taiwan University Hospital, Taipei, Taiwan
| | - Ching-Hui Tsai
- Institute of Epidemiology and Preventive Medicine, National Taiwan University College of Public Health, Taipei, Taiwan
| | - Ying-Chang Lu
- Department of Otolaryngology, National Taiwan University Hospital, Taipei, Taiwan
| | - Hsiao-Chun Lin
- Department of Otolaryngology, National Taiwan University Hospital, Taipei, Taiwan
| | - Juen-Haur Hwang
- Department of Otolaryngology, Dalin Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Chiayi, Taiwan; School of Medicine, Tzu Chi University, Hualien, Taiwan
| | - Yin-Hung Lin
- Department of Otolaryngology, National Taiwan University Hospital, Taipei, Taiwan; Graduate Institute of Medical Genomics and Proteomics, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Wei-Shiung Yang
- Department of Medical Genetics, National Taiwan University Hospital, Taipei, Taiwan; Graduate Institute of Clinical Medicine, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Pei-Jer Chen
- Graduate Institute of Clinical Medicine, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Wei-Chih Liao
- Health Management Center, National Taiwan University Hospital, Taipei, Taiwan
| | - Yungling Leo Lee
- Institute of Epidemiology and Preventive Medicine, National Taiwan University College of Public Health, Taipei, Taiwan; Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan.
| | - Tien-Chen Liu
- Department of Otolaryngology, National Taiwan University Hospital, Taipei, Taiwan.
| | - Chuan-Jen Hsu
- Department of Otolaryngology, National Taiwan University Hospital, Taipei, Taiwan; Department of Otolaryngology, Taichung Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Taichung, Taiwan.
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10
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Hwang JH, Tseng FY, Liu TC, Yang WS. No association between plasma adiponectin levels and central auditory function in adults. Metab Brain Dis 2015; 30:191-6. [PMID: 25108594 DOI: 10.1007/s11011-014-9597-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/16/2014] [Accepted: 07/21/2014] [Indexed: 12/23/2022]
Abstract
Adiponectin might play a protective role in cardiometabolic and peripheral auditory disorders, but its role on central auditory function was still unclear. The aim of this study was to examine whether there is an association between plasma adiponectin levels and central auditory function in adults. We recruited 297 adults, with normal or symmetrical sensorineural hearing loss and normal cognitive functions. Multivariate linear regression was performed to assess the association between plasma adiponectin concentrations and pitch pattern sequence (PPS) score, which was one of central auditory tests. The results showed that there were 224 (75.4%) women and 73 (24.6%) men in this study. The mean age was 58.1 ± 8.4 years, the mean waist circumference (WC) was 81.1 ± 8.3 cm, and the mean body mass index (BMI) was 24.0 ± 3.0 kg/m(2). The mean PPS score was 71.5 ± 14.1%, and plasma adiponectin concentration was 12.7 ± 5.5 g/mL. After adjusting for age, gender, WC, coronary artery disease, hypertension, diabetes mellitus, chronic kidney disease, smoking and drinking, plasma adiponectin concentrations (coefficient ± standard error, β ± SE = -0.09 ± 0.16, p = 0.563) were found to have no significant associations with PPS score. When WC was excluded from these variables in the multivariate linear regression model, plasma adiponectin concentrations (β ± SE = -0.03 ± 0.15, p = 0.855) were still not significantly associated with PPS score. In conclusion, plasma adiponectin levels were not significantly associated with PPS score, which was one of central auditory function tests. More studies should be conducted for the underlying mechanisms of obesity-related central auditory dysfunction.
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Affiliation(s)
- Juen-Haur Hwang
- Department of Otolaryngology, Dalin Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Chiayi, Taiwan
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11
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Identification of a novel GATA3 mutation in a deaf Taiwanese family by massively parallel sequencing. Mutat Res 2014; 771:1-5. [PMID: 25771973 DOI: 10.1016/j.mrfmmm.2014.11.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2014] [Revised: 10/14/2014] [Accepted: 11/04/2014] [Indexed: 11/21/2022]
Abstract
Recent studies have confirmed the utility of massively parallel sequencing (MPS) in addressing genetically heterogeneous hereditary hearing impairment. By applying a MPS diagnostic panel targeting 129 known deafness genes, we identified a novel frameshift GATA3 mutation, c.149delT (p.Phe51LeufsX144), in a hearing-impaired family compatible with autosomal dominant inheritance. The GATA3 haploinsufficiency is thought to be associated with the hypoparathyroidism, sensorineural deafness, and renal dysplasia (HDR) syndrome. The pathogenicity of GATA3 c.149delT was supported by its absence in the 5400 NHLBI exomes, 1000 Genomes, and the 100 normal hearing controls of the present study; the co-segregation of c.149delT heterozygosity with hearing impairment in 9 affected members of the family; as well as the nonsense-mediated mRNA decay of the mutant allele in in vitro functional studies. The phenotypes in this family appeared relatively mild, as most affected members presented no signs of hypoparathyroidism or renal abnormalities, including the proband. To our knowledge, this is the first report of genetic diagnosis of HDR syndrome before the clinical diagnosis. Genetic examination for multiple deafness genes with MPS might be helpful in identifying certain types of syndromic hearing loss such as HDR syndrome, contributing to earlier diagnosis and treatment of the affected individuals.
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12
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Progress and prospects in human genetic research into age-related hearing impairment. BIOMED RESEARCH INTERNATIONAL 2014; 2014:390601. [PMID: 25140308 PMCID: PMC4130297 DOI: 10.1155/2014/390601] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 01/29/2014] [Accepted: 06/26/2014] [Indexed: 11/23/2022]
Abstract
Age-related hearing impairment (ARHI) is a complex, multifactorial disorder that is attributable to confounding intrinsic and extrinsic factors. The degree of impairment shows substantial variation between individuals, as is also observed in the senescence of other functions. This individual variation would seem to refute the stereotypical view that hearing deterioration with age is inevitable and may indicate that there is ample scope for preventive intervention. Genetic predisposition could account for a sizable proportion of interindividual variation. Over the past decade or so, tremendous progress has been made through research into the genetics of various forms of hearing impairment, including ARHI and our knowledge of the complex mechanisms of auditory function has increased substantially. Here, we give an overview of recent investigations aimed at identifying the genetic risk factors involved in ARHI and of what we currently know about its pathophysiology. This review is divided into the following sections: (i) genes causing monogenic hearing impairment with phenotypic similarities to ARHI; (ii) genes involved in oxidative stress, biologic stress responses, and mitochondrial dysfunction; and (iii) candidate genes for senescence, other geriatric diseases, and neurodegeneration. Progress and prospects in genetic research are discussed.
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13
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Luo H, Yang T, Jin X, Pang X, Li J, Chai Y, Li L, Zhang Y, Zhang L, Zhang Z, Wu W, Zhang Q, Hu X, Sun J, Jiang X, Fan Z, Huang Z, Wu H. Association of GRM7 variants with different phenotype patterns of age-related hearing impairment in an elderly male Han Chinese population. PLoS One 2013; 8:e77153. [PMID: 24146964 PMCID: PMC3795658 DOI: 10.1371/journal.pone.0077153] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2013] [Accepted: 08/30/2013] [Indexed: 11/25/2022] Open
Abstract
Several single nucleotide polymorphisms (SNPs) of the Glutamate metabotrophic receptor 7 gene (GRM7) have recently been identified by the genome-wide association study (GWAS) as potentially playing a role in susceptibility to age-related hearing impairment (ARHI), however this has not been validated in the Han Chinese population. The aim of this study was to determine if these SNPs are also associated with ARHI in an elderly male Han Chinese population. In this case-control candidate genes association study, a total of 982 men with ARHI and 324 normal-hearing controls subjects were studied. Using K-means cluster analysis, four audiogram shape subtypes of ARHI were identified in the case group: ‘‘flat shape (FL)’’, ‘‘sloping shape (SL)’’, ‘‘2-4 kHz abrupt loss (AL) shape’’ and ‘‘8 kHz dip (8D) shape’’. Results suggested that the SNP rs11928865 (A>T) of GRM7 was significantly associated with ARHI after adjusting for non-genetic factors (p= 0.000472, OR= 1.599, 95%CI= 1.229~2.081). Furthermore, frequency of TT genotype (rs11928865) were significant higher in the SL subgroup and AL subgroup with compared to controls group (p= 9.41E-05, OR= 1.945, 95%CI= 1.393~2.715; p= 0.000109, OR= 1.915, 95%CI= 1.378~2.661 adjusted, respectively) after Bonferroni correction. However, there wasn’t significant difference in the frequency of the TT genotype between cases in the FL subgroup or the 8D subgroup with when compared with controls. Results of the current study suggest that, in an elderly male Han Chinese population, GRM7 SNP rs11928865 (TT) occurs more frequently in ARHI patients with SL and AL phenotype patterns.
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Affiliation(s)
- Huajie Luo
- Department of Otolaryngology Head and Neck Surgery, Xinhua Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, China
- Ear Institute, Shanghai JiaoTong University School of Medicine, Shanghai, China
- Department of Otolaryngology Head and Neck Surgery, RenJi Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, China
| | - Tao Yang
- Department of Otolaryngology Head and Neck Surgery, Xinhua Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, China
- Ear Institute, Shanghai JiaoTong University School of Medicine, Shanghai, China
| | - Xiaojie Jin
- Department of Otolaryngology Head and Neck Surgery, RenJi Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, China
| | - Xiuhong Pang
- Department of Otolaryngology Head and Neck Surgery, Xinhua Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, China
- Ear Institute, Shanghai JiaoTong University School of Medicine, Shanghai, China
| | - Jiping Li
- Department of Otolaryngology Head and Neck Surgery, RenJi Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, China
| | - Yongchuan Chai
- Department of Otolaryngology Head and Neck Surgery, Xinhua Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, China
- Ear Institute, Shanghai JiaoTong University School of Medicine, Shanghai, China
| | - Lei Li
- Department of Otolaryngology Head and Neck Surgery, Xinhua Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, China
- Ear Institute, Shanghai JiaoTong University School of Medicine, Shanghai, China
| | - Yi Zhang
- Department of Otolaryngology Head and Neck Surgery, RenJi Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, China
| | - Luping Zhang
- Department of Otolaryngology Head and Neck Surgery, Xinhua Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, China
- Ear Institute, Shanghai JiaoTong University School of Medicine, Shanghai, China
| | - Zhihua Zhang
- Department of Otolaryngology Head and Neck Surgery, Xinhua Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, China
- Ear Institute, Shanghai JiaoTong University School of Medicine, Shanghai, China
| | - Wenjing Wu
- Department of Otolaryngology Head and Neck Surgery, Xinhua Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, China
- Ear Institute, Shanghai JiaoTong University School of Medicine, Shanghai, China
| | - Qin Zhang
- Department of Otolaryngology Head and Neck Surgery, Xinhua Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, China
- Ear Institute, Shanghai JiaoTong University School of Medicine, Shanghai, China
| | - Xianting Hu
- Department of Otolaryngology Head and Neck Surgery, Xinhua Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, China
- Ear Institute, Shanghai JiaoTong University School of Medicine, Shanghai, China
| | - Jingwen Sun
- Department of Otolaryngology Head and Neck Surgery, Xinhua Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, China
- Ear Institute, Shanghai JiaoTong University School of Medicine, Shanghai, China
| | - Xuemei Jiang
- Health check-up center, Xinhua Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, China
| | - Zhuping Fan
- Health check-up center, RenJi Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, China
| | - Zhiwu Huang
- Department of Otolaryngology Head and Neck Surgery, Xinhua Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, China
- Ear Institute, Shanghai JiaoTong University School of Medicine, Shanghai, China
- * E-mail: (HW); (ZH)
| | - Hao Wu
- Department of Otolaryngology Head and Neck Surgery, Xinhua Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, China
- Ear Institute, Shanghai JiaoTong University School of Medicine, Shanghai, China
- * E-mail: (HW); (ZH)
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Ruan Q, Ma C, Zhang R, Yu Z. Current status of auditory aging and anti-aging research. Geriatr Gerontol Int 2013; 14:40-53. [PMID: 23992133 DOI: 10.1111/ggi.12124] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/17/2013] [Indexed: 01/08/2023]
Affiliation(s)
- Qingwei Ruan
- Central Lab; Shanghai Institute of Geriatrics and Gerontology; Huadong Hospital, Shanghai Medical College, Fudan University; Shanghai China
| | - Cheng Ma
- Central Lab; Shanghai Institute of Geriatrics and Gerontology; Huadong Hospital, Shanghai Medical College, Fudan University; Shanghai China
| | - Ruxin Zhang
- Central Lab; Shanghai Institute of Geriatrics and Gerontology; Huadong Hospital, Shanghai Medical College, Fudan University; Shanghai China
| | - Zhuowei Yu
- Central Lab; Shanghai Institute of Geriatrics and Gerontology; Huadong Hospital, Shanghai Medical College, Fudan University; Shanghai China
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15
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Hwang JH, Hsu CJ, Yu WH, Liu TC, Yang WS. Diet-induced obesity exacerbates auditory degeneration via hypoxia, inflammation, and apoptosis signaling pathways in CD/1 mice. PLoS One 2013; 8:e60730. [PMID: 23637762 PMCID: PMC3637206 DOI: 10.1371/journal.pone.0060730] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2012] [Accepted: 03/01/2013] [Indexed: 01/08/2023] Open
Abstract
The aim of this study was to investigate the mechanisms of diet-induced obesity on hearing degeneration in CD/1 mice. Sixty 4-week-old male CD/1 mice were randomly and equally divided into 2 groups. For 16 weeks, the diet-induced obesity (DIO) group was fed a high fat diet and the control group was fed a standard diet of 13.43 % kcal fat. The morphometry, biochemistry, auditory brainstem response thresholds, omental fat, and histopathology of the cochlea were compared between the beginning and end of the study (4 vs. 20 weeks old). The results show that the body weight, fasting plasma triglyceride concentrations, and omental fat weight were higher in the DIO group than in the control group at the end of experiment. The auditory brainstem response thresholds at high frequencies were significantly elevated in the DIO group compared to those of the control group. Histology studies showed that, compared to the control group, the DIO group had blood vessels with smaller diameters and thicker walls in the stria vascularis at the middle and basal turns of the cochlea. The cell densities in the spiral ganglion and spiral ligament at the basal turn of the cochlea were significantly lower in the DIO group. Immunohistochemical staining showed that hypoxia-induced factor 1 (HIF-1), tumor necrosis factor alpha (TNF-α), nuclear factor kappa B (NF-κB), caspase 3, poly(ADP-ribose) polymerase-1, and apoptosis inducing factor were all significantly more dense in the spiral ganglion and spiral ligament at the basal turn of cochlea in the DIO group. Our results suggest that diet-induced obesity exacerbates hearing degeneration via increased hypoxia, inflammatory responses, and cell loss in the spiral ganglion and spiral ligament and is associated with the activation of both caspase-dependent and -independent apoptosis signaling pathways in CD/1 mice.
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Affiliation(s)
- Juen-Haur Hwang
- Graduate Institute of Clinical Medicine, College of Medicine, National Taiwan University, Taipei, Taiwan
- Department of Otolaryngology, Buddhist Dalin Tzu-Chi General Hospital, Chiayi, Taiwan
- School of Medicine, Tzu Chi University, Hualien, Taiwan
| | - Chuan-Jen Hsu
- Department of Otolaryngology, National Taiwan University, Hospital, Taipei, Taiwan
| | - Wei-Hsuan Yu
- Institute of Biochemistry and Molecular Biology, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Tien-Chen Liu
- Department of Otolaryngology, National Taiwan University, Hospital, Taipei, Taiwan
- * E-mail: (WSY); (TCL)
| | - Wei-Shiung Yang
- Graduate Institute of Clinical Medicine, College of Medicine, National Taiwan University, Taipei, Taiwan
- Department of Internal Medicine, National Taiwan University, Hospital, Taipei, Taiwan
- Research Center for Developmental Biology and Regenerative Medicine, National Taiwan University, Taipei, Taiwan
- * E-mail: (WSY); (TCL)
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16
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Hwang JH, Chen JC, Yang WS, Liu TC. Waist circumference is associated with pitch pattern sequence score in older male adults. Int J Audiol 2012; 51:920-5. [PMID: 23072653 DOI: 10.3109/14992027.2012.721933] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
OBJECTIVE While obesity may increase the risk for neurodegenerative diseases such as Alzheimer's disease, the relationship between waist circumference (WC) and central auditory dysfunction is unknown. We aimed to investigate the relationship of WC and pitch pattern sequence (PPS) score in adults. DESIGN The association of WC with PPS score was analysed. STUDY SAMPLE Volunteer helpers at a community hospital, 391 adults ≥40 years, with normal or symmetrical sensorineural hearing loss were randomly selected. RESULTS After adjusting for age, gender, pure-tone average, systemic diseases, and habits, WC was significantly negatively associated with PPS. In a subgroup analysis by gender and age, the PPS score was negatively associated with WC only for males who were older than 55 years old, but not for males who were younger than 55 years old or females in either age group. Meanwhile, central obesity showed positive association with abnormal PPS recognition ability (PPS score < 90%) of borderline significance only for males who were older than 55 years old, but not for males who were younger than 55 years old or females in both age groups. CONCLUSIONS WC or central obesity is an independent risk factor for poor central auditory function, especially in older male subjects.
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Affiliation(s)
- Juen-Haur Hwang
- Department of Otolaryngology, Buddhist Dalin Tzu-Chi General Hospital, Chiayi, Taiwan
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17
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Hwang JH, Chen JC, Hsu CJ, Yang WS, Liu TC. Plasma reactive oxygen species levels are correlated with severity of age-related hearing impairment in humans. Neurobiol Aging 2012; 33:1920-6. [DOI: 10.1016/j.neurobiolaging.2011.10.012] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2011] [Revised: 09/23/2011] [Accepted: 10/15/2011] [Indexed: 01/08/2023]
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18
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Hwang JH, Liu KS, Wu CC, Liu TC. Association of cadherin23 single nucleotide polymorphism with age-related hearing impairment in Han Chinese. Otolaryngol Head Neck Surg 2012; 147:531-4. [PMID: 22581638 DOI: 10.1177/0194599812446904] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
OBJECTIVE Genetic variation of cadheri23 (cdh23; 753G>A in exon 7) has been implicated with age-related hearing impairment (ARHI) in mice. This study aimed to test the association of the CDH23 tag single nucleotide polymorphism (SNP) in intron 7 with ARHI in Han Chinese. STUDY DESIGN Individual cohort study. SETTING Tertiary medical center. SUBJECTS AND METHODS A total of 1175 Han Chinese subjects were divided into the case group (n = 310, 26% with poorest hearing) and the control group (n = 308, the 26% with best hearing) according to the Z(high) score converted from the original frequency-specific hearing thresholds. The CDH23 SNP locus (rs7087735: C/T) in intron 7 (coordinate: 72996763) shown in the HapMap was genotyped with correlation to the hearing phenotype. RESULTS The genotype distributions of CDH23 (CC/CT/TT) were not significantly different between the case and control group (P = .489). Compared with genotype CC, the odds ratios of the genotypes CT and TT for ARHI were not significantly different after adjustment for other environmental factors (P = .299 for CT; P = .610 for TT). CONCLUSIONS Despite that the Ahl allele of Cdh23 had been implicated with ARHI in mice, we found no positive association of the CDH23 tag SNP in intron 7 with ARHI in Han Chinese.
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Affiliation(s)
- Juen-Haur Hwang
- Graduate Institute of Clinical Medicine, College of Medicine, National Taiwan University, Taipei, Taiwan
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Wang S, Samakovlis C. Grainy head and its target genes in epithelial morphogenesis and wound healing. Curr Top Dev Biol 2012; 98:35-63. [PMID: 22305158 DOI: 10.1016/b978-0-12-386499-4.00002-1] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The Grainy head (Grh) family of transcription factors is characterized by a unique DNA-binding domain that binds to a conserved consensus sequence. Nematodes and flies have a single grh gene, whereas mice and humans have evolved three genes encoding Grainy head-like (Grhl) factors. We review the biological function of Grh in different animals and the mechanisms modulating its activity. grh and grhl genes play a remarkably conserved role in epithelial organ development and extracellular barrier repair after tissue damage. Recent studies in flies and vertebrates suggest that Grh factors may be primary determinants of cell adhesion and epithelial tissue formation. Grh proteins can dimerize and act as activators or repressors in different developmental contexts. In flies, tissue-specific, alternative splicing generates different Grh isoforms with different DNA-binding specificities and functions. Grh activity is also modulated by receptor tyrosine kinases: it is phosphorylated by extracellular signal regulated kinase, and this phosphorylation is selectively required for epidermal barrier repair. Two mechanisms have been proposed to explain the repressive function of Grh on target gene transcription. First, Grh can target the Polycomb silencing complex to specific response elements. Second, it can directly compete for DNA binding with transcriptional activators. Understanding the molecular mechanisms of gene regulation by Grh factors is likely to elucidate phylogenetically conserved mechanisms of epithelial cell morphogenesis and regeneration upon tissue damage.
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Affiliation(s)
- Shenqiu Wang
- Department of Developmental Biology, Wenner-Gren Institute, Stockholm University, Stockholm, Sweden
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