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Yam C, McGovern B, Boyajieff E, Maxwell P, Little K, Sataloff RT. The impact of menopausal status on auditory brainstem responses. Am J Otolaryngol 2024; 45:104067. [PMID: 37778111 DOI: 10.1016/j.amjoto.2023.104067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2023] [Revised: 09/21/2023] [Accepted: 09/24/2023] [Indexed: 10/03/2023]
Abstract
OBJECTIVE To determine the effect of decreased estrogen levels due to menopause on auditory brainstem response measurements (ABR). STUDY DESIGN Retrospective chart review. SETTING Academic. PATIENTS Pre- and post-menopausal females (pre-M, post-M) and age-matched males. METHODS ABR measurements of wave I, III, and V latencies, and interpeak latencies; amplitudes of waves I, III, V, and V/I ratio. OUTCOME MEASURE Differences in ABR measurements between pre-M and post-M. RESULTS 164 subjects (101 female and 64 male) were included. Post-M had significantly greater latencies (msec) than pre-M of wave V. Post-M had a significantly smaller wave I amplitude (uV) than pre-M. Post-M had a significantly higher wave V/I amplitude ratio than pre-M. Pre-M had significantly shorter latencies than young males for wave III, and wave V. Post-M had significantly shorter latencies than older males at wave III, and wave V. A two-way ANOVA revealed a significant interaction between the effects of age category and gender on V/I amplitude. CONCLUSION Post-M group showed a significant drop in wave I amplitude compared with pre-M group, even in the absence of hearing loss, suggesting that the gender differences in hearing are related to estrogen signaling along the auditory pathway. If wave I amplitude changes between older and younger groups resulted from decreased peripheral hearing sensitivity, we would expect larger drops in amplitude in males since rates of presbycusis are higher. We observed much larger drops in wave I amplitude in females, which cannot be attributed to peripheral hearing loss. These results may assist in understanding gender differences in presbycusis and a possible protective effect of estrogen on the auditory system. Knowledge of gender differences in wave I may be important when ABR is used to assess possible synaptopathy.
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Affiliation(s)
- Christopher Yam
- Department of Otolaryngology-Head and Neck Surgery, Drexel University College of Medicine, Philadelphia, PA, United States of America.
| | - Brian McGovern
- Department of Otolaryngology-Head and Neck Surgery, Drexel University College of Medicine, Philadelphia, PA, United States of America.
| | - Emma Boyajieff
- Department of Otolaryngology-Head and Neck Surgery, Drexel University College of Medicine, Philadelphia, PA, United States of America.
| | - Philip Maxwell
- Department of Otolaryngology-Head and Neck Surgery, Drexel University College of Medicine, Philadelphia, PA, United States of America.
| | - Kara Little
- Department of Otolaryngology-Head and Neck Surgery, Drexel University College of Medicine, Philadelphia, PA, United States of America.
| | - Robert T Sataloff
- Department of Otolaryngology-Head and Neck Surgery, Drexel University College of Medicine, Philadelphia, PA, United States of America; Senior Associate Dean for Clinical Academic Specialties, Drexel University College of Medicine, United States of America.
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Aloufi N, Heinrich A, Marshall K, Kluk K. Sex differences and the effect of female sex hormones on auditory function: a systematic review. Front Hum Neurosci 2023; 17:1077409. [PMID: 37151900 PMCID: PMC10161575 DOI: 10.3389/fnhum.2023.1077409] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2022] [Accepted: 03/30/2023] [Indexed: 05/09/2023] Open
Abstract
Aims First, to discuss sex differences in auditory function between women and men, and whether cyclic fluctuations in levels of female sex hormones (i.e., estradiol and progesterone) affect auditory function in pre-menopausal and post-menopausal women. Second, to systematically review the literature concerning the discussed patterns in order to give an overview of the methodologies used in research. Last, to identify the gap in knowledge and to make recommendations for future work. Methods for the systematic review Population, Exposure, Control, Outcome and Study design (PECOS) criteria were used in developing the review questions. The review protocol follows the guidelines of the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) and was pre-registered in the Prospective Register of Systematic Reviews (PROSPERO; CRD42020201480). Data Sources: EMBASE, PubMed, MEDLINE (Ovid), PsycINFO, ComDisDome, CINAHL, Web of Science, Cochrane Central Register of Controlled Trials (CENTRAL) via Cochrane Library, and scanning reference lists of relevant studies, and internet resources (i.e., Mendeley) were used. Only studies published between 1999 and 2022, in English, or in English translation, were included. The quality of evidence was assessed using the Newcastle-Ottawa Scale (NOS). Results Sex differences: Women had more sensitive hearing (measured at the level of peripheral and central auditory system) than men. Cyclic fluctuations: Auditory function in women fluctuated during the menstrual cycle, while no such fluctuations in men over the same time period were reported. Hearing sensitivity improved in women during the late follicular phase, and decrease during the luteal phase, implying an effect of female sex hormones, although the specific effects of estradiol and progesterone fluctuations on the central auditory system remain unclear. Hearing sensitivity in women declined rapidly at the onset of menopause. Conclusion The review has shown the following. Consistent sex differences exist in auditory function across the auditory pathway with pre-menopausal women often showing better function than age-matched men. Moreover, pre-menopausal women show fluctuations in hearing function across the menstrual cycle with a better function during the peak of estradiol or when the ratio of estradiol to progesterone is high. Third, menopause marks the onset of hearing loss in women, characterized by a rapid decline in hearing sensitivity and a more pronounced loss than in age-matched men. Finally, the systematic review highlights the need for well-designed and -controlled studies to evaluate the influence of estradiol and progesterone on hearing by consistently including control groups (e.g., age-matched man), using objective tests to measure hormonal levels (e.g., in saliva or blood), and by testing participants at different points across the menstrual cycle. Systematic review registration https://www.crd.york.ac.uk/prospero/display_record.php?ID=CRD42020201480, identifier CRD42020201480.
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Affiliation(s)
- Nada Aloufi
- Manchester Centre for Audiology and Deafness, Manchester Academic Health Science Centre, Faculty of Biology, Medicine and Health, School of Health Sciences, University of Manchester, Manchester, United Kingdom
- College of Medical Rehabilitation Sciences, Taibah University, Medina, Saudi Arabia
| | - Antje Heinrich
- Manchester Centre for Audiology and Deafness, Manchester Academic Health Science Centre, Faculty of Biology, Medicine and Health, School of Health Sciences, University of Manchester, Manchester, United Kingdom
| | - Kay Marshall
- Division of Pharmacy and Optometry, Faculty of Biology, School of Health Sciences, Medicine and Health, University of Manchester, Manchester, United Kingdom
| | - Karolina Kluk
- Manchester Centre for Audiology and Deafness, Manchester Academic Health Science Centre, Faculty of Biology, Medicine and Health, School of Health Sciences, University of Manchester, Manchester, United Kingdom
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Al-Yawer F, Pichora-Fuller MK, Wittich W, Mick P, Giroud N, Rehan S, Phillips NA. Sex-Specific Interactions Between Hearing and Memory in Older Adults With Mild Cognitive Impairment: Findings From the COMPASS-ND Study. Ear Hear 2022. [PMID: 36607746 DOI: 10.1097/AUD.0000000000001322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
OBJECTIVES Hearing loss (HL) in older adults is associated with a decline in performance on cognitive tasks and the risk of developing dementia. However, very few studies have investigated sex-related effects on these associations. A previous study of cognitively healthy older adults showed an association between HL and lower cognitive performance in females only. In the present study, we examined the effects of sex and hearing on cognition in individuals with mild cognitive impairment (MCI). We predicted that females with HL would be more likely to show poorer performance on the cognitive measures compared to females with normal hearing (NH), while cognitive performance in males would not depend on hearing. We further predicted that these auditory-cognitive associations would not depend on test modality, and would thus be observed in females for both auditory and visual tests. DESIGN Participants were 101 older adults with amnestic MCI (M = 71 years, 45% females) in the Canadian Consortium on Neurodegeneration in Aging (CCNA) COMPASS-ND study. Performance on the Montreal Cognitive Assessment (MoCA), Rey Auditory Verbal Learning (RAVLT), and Brief Visuospatial Memory Test-Revised (BVMT-R) was analyzed to investigate sex-related differences and/or hearing-related differences. Participants were categorized as having NH or HL using two different measures: pure-tone hearing screening results (normal based on a pure-tone threshold < 25 dB HL at 2000 Hz in the worse ear) and speech-in-noise speech reception thresholds (SRTs; normal < -10 dB SNR on the Canadian Digit Triplet Test [CDTT]). RESULTS Males and female groups did not differ in age, years of education, or other relevant covariates. Yet, females with better hearing on either pure-tone or speech-in-noise measures outperformed their worse hearing counterparts on the MoCA total score. Additionally, females with better hearing were more likely to recall several words on the MoCA delayed recall trial relative to those with worse hearing. Females with NH showed significant correlations between CDTT SRTs and both MoCA and RAVLT scores, while no correlations were observed in males. In contrast, males but not females showed an effect of hearing group on BVMT-R test status. CONCLUSIONS There were sex-specific differences in auditory-cognitive associations in individuals with MCI. These associations were mostly observed in females and on auditory tests. Potential mechanisms and implications are discussed.
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Kaya B, Çiftçi HN, Çelebi Z, Yılmaz O, Şerbetçioğlu MB. Evaluation of the effect of the menstrual cycle on hearing. Hearing, Balance and Communication 2022. [DOI: 10.1080/21695717.2022.2148991] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Beyza Kaya
- Department of Audiology, Istanbul Medipol University, Beykoz, İstanbul
| | | | - Zehra Çelebi
- Department of Audiology, Istanbul Medipol University, Beykoz, İstanbul
| | - Oğuz Yılmaz
- Department of Audiology, Istanbul Medipol University, Beykoz, İstanbul
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Xue R, Tang Q, Zhang Y, Xie M, Li C, Wang S, Yang H. Integrative Analyses of Genes Associated With Otologic Disorders in Turner Syndrome. Front Genet 2022; 13:799783. [PMID: 35273637 PMCID: PMC8902304 DOI: 10.3389/fgene.2022.799783] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Accepted: 02/08/2022] [Indexed: 12/02/2022] Open
Abstract
Background: Loss or partial loss of one X chromosome induces Turner syndrome (TS) in females, causing major medical concerns, including otologic disorders. However, the underlying genetic pathophysiology of otologic disorders in TS is mostly unclear. Methods: Ear-related genes of TS (TSEs) were identified by analyzing differentially expressed genes (DEGs) in two Gene Expression Omnibus (GEO)-derived expression profiles and ear-genes in the Comparative Toxicogenomic Database (CTD). Subsequently, Gene Ontology (GO), Kyoto Encyclopedia of Genes and Genomes (KEGG), and Disease Ontology (DO) analyses; Gene Set Enrichment Analysis (GSEA); and Gene Set Variation Analysis (GSVA) were adopted to study biological functions. Moreover, hub genes within the TSEs were identified by assessing protein-protein interaction (PPI), gene-microRNA, and gene-transcription factor (TF) networks. Drug-Gene Interaction Database (DGIdb) analysis was performed to predict molecular drugs for TS. Furthermore, three machine-learning analysis outcomes were comprehensively compared to explore optimal biomarkers of otologic disorders in TS. Finally, immune cell infiltration was analyzed. Results: The TSEs included 30 significantly upregulated genes and 14 significantly downregulated genes. Enrichment analyses suggested that TSEs play crucial roles in inflammatory responses, phospholipid and glycerolipid metabolism, transcriptional processes, and epigenetic processes, such as histone acetylation, and their importance for inner ear development. Subsequently, we described three hub genes in the PPI network and confirmed their involvement in Wnt/β-catenin signaling pathway and immune cell regulation and roles in maintaining normal auditory function. We also constructed gene-microRNA and gene-TF networks. A novel biomarker (SLC25A6) of the pathogenesis of otologic disorders in TS was identified by comprehensive comparisons of three machine-learning analyses with the best predictive performance. Potential therapeutic agents in TS were predicted using the DGIdb. Immune cell infiltration analysis showed that TSEs are related to immune-infiltrating cells. Conclusion: Overall, our findings have deepened the understanding of the pathophysiology of otologic disorders in TS and made contributions to present a promising biomarker and treatment targets for in-depth research.
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Affiliation(s)
- Ruoyan Xue
- Department of Otolaryngology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Qi Tang
- Department of Otolaryngology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Yongli Zhang
- Department of Otolaryngology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Mengyao Xie
- Department of Otolaryngology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Chen Li
- Department of Otolaryngology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Shu Wang
- Department of Otolaryngology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Hua Yang
- Department of Otolaryngology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
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Özgedik D, Kirbaç A, Belgin E. Is there any difference in hearing function between surgical and natural menopause? Women Health 2022; 62:135-143. [DOI: 10.1080/03630242.2022.2029801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Dilek Özgedik
- Faculty of Health Sciences, Department of Speech Language Therapy, Lokman Hekim University, Ankara, Turkey
| | - Arzu Kirbaç
- Department of Audiology, Eskişehir Osmangazi University Faculty of Health Sciences, Ankara, Turkey
| | - Erol Belgin
- Faculty of Health Sciences, Department of Audiology, Medipol University, Ankara, Turkey
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Abstract
PURPOSE OF REVIEW Vestibular disorders are gender distributed with a higher prevalence in women. Although research has increased in this field, the mechanisms underlying this unbalance is unclear. This review summarises recent advances in this research sphere, and briefly discusses sex hormone effects on various vestibular conditions and highlights some recent theories. RECENT FINDINGS Recent work has identified a direct link between aberrant gonadal hormone levels and vestibular dysfunction. Benign paroxysmal positional vertigo research suggests that the disorder may be linked to the rapid decrease in oestrogen, observed in menopausal women, which disrupts otoconial metabolism within the inner ear. A successful hormonal therapeutic intervention study has advanced our knowledge of hormonal influences in the inner ear in Ménière's disease. Also, several studies have focused on potential mechanisms involved in the interaction between Vestibular Migraine, Mal de Debarquement Syndrome, and gonadal hormones. SUMMARY In females, gonadal hormones and sex-specific synaptic plasticity may play a significant role in the underlying pathophysiology of peripheral and central vestibular disorders. Overall, this review concludes that clinical assessment of female vestibular patients requires a multifaceted approach which includes auditory and vestibular medicine physicians, gynaecologists and/or endocrinologists, in conjunction with hormonal profile evaluations.
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Affiliation(s)
- Viviana Mucci
- School of Science, Campbelltown Campus, Western Sydney University, NSW, Australia
| | | | - Yves Jacquemyn
- Antwerp University Hospital UZA, Drie Eikenstraat 655, 2650 Edegem Belgium and Antwerp University UA, ASTARC and GHI, Wilrijk, Belgium
| | - Cherylea J Browne
- School of Science, Campbelltown Campus, Western Sydney University, NSW, Australia
- Translational Neuroscience Facility, School of Medical Sciences, UNSW Sydney, NSW, Australia
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Xu Y, Liu J, Dong C, Guo S, Cao H, Zhang J, Wang M, Wang J, Li X, Yang D. Hearing Status of Low-Income, Middle-Aged and Elderly Women in Northern China: A Population-Based, Cross-Sectional Study. J Multidiscip Healthc 2021; 14:2617-2624. [PMID: 34584418 PMCID: PMC8464339 DOI: 10.2147/jmdh.s323884] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2021] [Accepted: 08/19/2021] [Indexed: 11/23/2022] Open
Abstract
Objective Hearing impairment (HI) has become one of the most common causes of disability worldwide. To date, few studies have examined the hearing of women in these frequently rural regions. Thus, we explored the HI prevalence and risk factors among low-income, middle-aged, and elderly women in Tianjin, China. Methods Between October and November 2013, female residents aged ≥45 years of rural Tianjin, China were recruited into the study. The participants completed questionnaire surveys, physical examinations, and hearing tests. The hearing at frequencies of 500 Hz, 1000 Hz, 2000 Hz, and 4000 Hz was used to analyze the hearing characteristics of specific frequency bands, and HI was defined as the better ear pure tone averages (PTA) >25 dB HL. Results Among the 1416 participants, the prevalence of HI was 46.0%. Among those aged 45-54-years, most (65.3%) demonstrated normal hearing; in other age groups, slight HI accounted for the largest proportions of individuals. Compared with women who did not drink, the odds ratio (OR) of HI among women who consumed alcohol was 4.2 (95% confidence interval [CI]: 1.844-9.574; P = 0.001). Compared with pre-menopausal women, the OR of HI among postmenopausal women was 1.8 (95% CI: 1.261-2.667; P = 0.001). Further, each 1-year increase in age in women resulted in a 7.1% increase in HI risk (P < 0.001). Conclusion The burden of HI among women is heavy in rural northern China, especially among those who experienced menopause. Additionally, the results suggest that to further reduce the risk of developing HI, women in rural areas should stop consuming alcohol. The problem of HI among women in rural areas should be taken seriously; moreover, the measures implemented to prevent HI in high-risk women should be strengthened.
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Affiliation(s)
- Yi Xu
- Department of Otorhinolaryngology, Tianjin Medical University General Hospital, Tianjin, 300052, People's Republic of China
| | - Jie Liu
- Department of Neurology, Tianjin Medical University General Hospital, Tianjin, 300052, People's Republic of China.,Laboratory of Epidemiology, Tianjin Neurological Institute, Tianjin, 300052, People's Republic of China.,Tianjin Neurological Institute, Key Laboratory of Post-Neuroinjury Neuro-Repair and Regeneration in Central Nervous System, Ministry of Education and Tianjin City, Tianjin, 300052, People's Republic of China
| | - Chao Dong
- Department of Otorhinolaryngology, Tianjin Medical University General Hospital, Tianjin, 300052, People's Republic of China
| | - Sitong Guo
- Department of Otorhinolaryngology, Tianjin Medical University General Hospital, Tianjin, 300052, People's Republic of China
| | - Hui Cao
- Department of Otorhinolaryngology, Tianjin Medical University General Hospital, Tianjin, 300052, People's Republic of China
| | - Jing Zhang
- Department of Otorhinolaryngology, Tianjin Medical University General Hospital, Tianjin, 300052, People's Republic of China
| | - Mingxin Wang
- Department of Otorhinolaryngology, Tianjin Medical University General Hospital, Tianjin, 300052, People's Republic of China
| | - Jinghua Wang
- Department of Neurology, Tianjin Medical University General Hospital, Tianjin, 300052, People's Republic of China.,Laboratory of Epidemiology, Tianjin Neurological Institute, Tianjin, 300052, People's Republic of China.,Tianjin Neurological Institute, Key Laboratory of Post-Neuroinjury Neuro-Repair and Regeneration in Central Nervous System, Ministry of Education and Tianjin City, Tianjin, 300052, People's Republic of China
| | - Xin Li
- Department of Otorhinolaryngology, Beijing Tsinghua Changgung Hospital,School of Clinical Medicine, Tsinghua University, Beijing, 102218, People's Republic of China
| | - Dong Yang
- Department of Otorhinolaryngology, Tianjin Medical University General Hospital, Tianjin, 300052, People's Republic of China
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Luo SD, Chiu TJ, Chen WC, Wang CS. Sex Differences in Otolaryngology: Focus on the Emerging Role of Estrogens in Inflammatory and Pro-Resolving Responses. Int J Mol Sci 2021; 22:ijms22168768. [PMID: 34445474 PMCID: PMC8395901 DOI: 10.3390/ijms22168768] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2021] [Revised: 08/09/2021] [Accepted: 08/13/2021] [Indexed: 12/02/2022] Open
Abstract
Otolaryngology (also known as ear, nose, and throat (ENT)) diseases can be significantly affected by the level of sex hormones, which indicates that sex differences affect the manifestation, pathophysiology, and outcomes of these diseases. Recently, increasing evidence has suggested that proinflammatory responses in ENT diseases are linked to the level of sex hormones. The sex hormone receptors are present on a wide variety of immune cells; therefore, it is evident that they play crucial roles in regulating the immune system and hence affect the disease progression of ENT diseases. In this review, we focus on how sex hormones, particularly estrogens, regulate ENT diseases, such as chronic rhinosinusitis, vocal fold polyps, thyroid cancer, Sjögren’s syndrome, and head and neck cancers, from the perspectives of inflammatory responses and specialized proresolving mediator-driven resolution. This paper aims to clarify why considering sex differences in the field of basic and medical research on otolaryngology is a key component to successful therapy for both males and females in the future.
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Affiliation(s)
- Sheng-Dean Luo
- Department of Otolaryngology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung 833, Taiwan; (S.-D.L.); (W.-C.C.)
- Graduate Institute of Clinical Medical Sciences, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan;
| | - Tai-Jan Chiu
- Graduate Institute of Clinical Medical Sciences, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan;
- Department of Hematology-Oncology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung 833, Taiwan
| | - Wei-Chih Chen
- Department of Otolaryngology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung 833, Taiwan; (S.-D.L.); (W.-C.C.)
| | - Ching-Shuen Wang
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 110, Taiwan
- Correspondence: ; Tel.: +886-227-361-661 (ext. 5166)
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Lien KH, Yang CH. Sex Differences in the Triad of Acquired Sensorineural Hearing Loss. Int J Mol Sci 2021; 22:8111. [PMID: 34360877 DOI: 10.3390/ijms22158111] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Revised: 07/17/2021] [Accepted: 07/26/2021] [Indexed: 12/20/2022] Open
Abstract
The triad of noise-generated, drug-induced, and age-related hearing loss is the major cause of acquired sensorineural hearing loss (ASNHL) in modern society. Although these three forms of hearing loss display similar underlying mechanisms, detailed studies have revealed the presence of sex differences in the auditory system both in human and animal models of ASNHL. However, the sexual dimorphism of hearing varies among noise-induced hearing loss (NIHL), ototoxicity, and age-related hearing loss (ARHL). Importantly, estrogen may play an essential role in modulating the pathophysiological mechanisms in the cochlea and several reports have shown that the effects of hormone replacement therapy on hearing loss are complex. This review will summarize the clinical features of sex differences in ASNHL, compare the animal investigations of cochlear sexual dimorphism in response to the three insults, and address how estrogen affects the auditory organ at molecular levels.
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Qian Y, Kang H, Hu G, Zhong S, Zuo W, Lei Y, Xu Z, Chen T, Zeng J. Sudden sensorineural hearing loss during pregnancy: etiology, treatment, and outcome. J Int Med Res 2021; 49:300060521990983. [PMID: 33630715 PMCID: PMC7925942 DOI: 10.1177/0300060521990983] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
OBJECTIVE To analyze the etiologies, treatments, and outcomes of sensorineural hearing loss (SSNHL) during pregnancy. STUDY DESIGN Retrospective chart review of 25 pregnant patients treated for SSNHL between January 2012 and September 2019. Forty-nine age matched non-pregnant women with severe and profound hearing loss diagnosed with SSNHL during the same period served as controls. Data were recorded on age, symptoms, onset of hearing loss, audiometric results, treatments, and outcomes. RESULTS The mean age was 29.6 years (range 23-38 years). Intratympanic steroids (ITS) were administered in 15 (60.0%) pregnant women with SSNHL. Three women were treated with postauricular steroids only, while another woman was treated with intravenous ginkgo leaf extract and dipyridamole. The remaining six women received no medications. More than half (8/15, 53.3%) of pregnant women with SSNHL receiving ITS experienced hearing improvement. Pregnant women with profound hearing loss who received no medication had no hearing improvement. Most pregnant women with SSNHL (12/15, 80.0%) had higher fibrinogen levels than controls (mean values 3.77±0.71 g/L and 2.54±0.48 g/L, respectively). CONCLUSION Fibrinogen could be a risk factor for SSNHL during pregnancy. ITS may benefit pregnant women with severe and profound SSNHL.
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Affiliation(s)
- Yi Qian
- Department of Otorhinolaryngology, The First Affiliated Hospital of Chongqing Medical University, Chongqing City, China
| | - Houyong Kang
- Department of Otorhinolaryngology, The First Affiliated Hospital of Chongqing Medical University, Chongqing City, China
| | - Guohua Hu
- Department of Otorhinolaryngology, The First Affiliated Hospital of Chongqing Medical University, Chongqing City, China
| | - Shixun Zhong
- Department of Otorhinolaryngology, The First Affiliated Hospital of Chongqing Medical University, Chongqing City, China
| | - Wenqi Zuo
- Department of Otorhinolaryngology, The First Affiliated Hospital of Chongqing Medical University, Chongqing City, China
| | - Yan Lei
- Department of Otorhinolaryngology, The First Affiliated Hospital of Chongqing Medical University, Chongqing City, China
| | - Zhengyan Xu
- Department of Otorhinolaryngology, The First Affiliated Hospital of Chongqing Medical University, Chongqing City, China
| | - Tao Chen
- Department of Otorhinolaryngology, The First Affiliated Hospital of Chongqing Medical University, Chongqing City, China
| | - Jihong Zeng
- Department of Otorhinolaryngology, The First Affiliated Hospital of Chongqing Medical University, Chongqing City, China
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Khoshsirat S, Abbaszadeh HA, Peyvandi AA, Heidari F, Peyvandi M, Simani L, Niknazar S. Apelin-13 prevents apoptosis in the cochlear tissue of noise-exposed rat via Sirt-1 regulation. J Chem Neuroanat 2021; 114:101956. [PMID: 33831513 DOI: 10.1016/j.jchemneu.2021.101956] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 04/04/2021] [Accepted: 04/04/2021] [Indexed: 12/11/2022]
Abstract
Noise-induced hearing loss (NIHL) is the second most common cause of acquired hearing loss. Acoustic trauma can cause oxidative damage in the cochlear hair cells (HCs) through apoptotic pathways. Apelin is a newly discovered neuropeptide with neuroprotective effects against the oxidative stress in neurodegenerative disorder. We investigated the preventive effects of apelin-13 on the cochlear HCs and spiral ganglion neurons (SGNs) against acoustic trauma via Sirtuin-1 (Sirt-1) regulation in rats. Animals were assigned to control, control + apelin-13 (50 or 100 μg/kg, ip), and noise exposure groups without any treatment or were administered apelin-13 (50 or 100 μg/kg, ip) and EX-527 (an inhibitor of Sirt-1) prior to each noise session. In the noise groups, 110 dB white noise was applied for 6 h per 5 days. Pre- and post-exposure distortion product otoacoustic emissions (DPOAE) and cochlear superoxide dismutase (SOD) activity were assessed. Western blot evaluated the cochlear protein expressions of Sirt-1, cleaved-caspase-3, Bax, and Bcl-2. Cell apoptosis was detected through TUNEL staining. Immunofluorescence was used to examine expression of HCs and SGNs specific protein. DPOAE level were significantly improved in the noise exposure group receiving 100 μg/kg apelin-13. At high doses, apelin augmented SOD levels in the rat cochlea subjected to noise. Apelin 100 markedly increased Sirt-1, and decreased cleaved- caspase-3 expression as well as Bax/Bcl-2 ratio in the cochlea tissue of noise-exposed rats. These findings suggest the promising therapeutic potential of apelin-13 for the prevention of noise-induced injury to cochlea and hearing loss.
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Affiliation(s)
- Shahrokh Khoshsirat
- Hearing Disorders Research Center, Loghman Hakim Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Hojjat-Allah Abbaszadeh
- Hearing Disorders Research Center, Loghman Hakim Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran; Laser Application in Medical Sciences Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran; Department of Anatomical Sciences and Biology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Ali Asghar Peyvandi
- Hearing Disorders Research Center, Loghman Hakim Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Fatemeh Heidari
- Hearing Disorders Research Center, Loghman Hakim Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran; Department of Audiology, School of Rehabilitation, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Maryam Peyvandi
- Hearing Disorders Research Center, Loghman Hakim Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Leila Simani
- Skull Base Research Center, Loghman Hakim Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Somayeh Niknazar
- Hearing Disorders Research Center, Loghman Hakim Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
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13
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Lyu YL, Zeng FQ, Zhou Z, Yan M, Zhang W, Liu M, Ke ZY. Intratympanic dexamethasone injection for sudden sensorineural hearing loss in pregnancy. World J Clin Cases 2020; 8:4051-4058. [PMID: 33024762 PMCID: PMC7520784 DOI: 10.12998/wjcc.v8.i18.4051] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Revised: 06/23/2020] [Accepted: 08/12/2020] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND As sudden sensorineural hearing loss (SSNHL) rarely occurs in pregnant women, there is a lack of knowledge and relevant research on its management.
AIM To investigate the effect of intratympanic dexamethasone injection in the treatment of pregnant patients with SSNHL.
METHODS A retrospective chart review was made for the period between June 2017 and August 2019 at our Department of Otorhinolaryngology-Head and Neck Surgery. Pregnant women who met the criteria for SSNHL were included and grouped based on the therapeutic modalities. The treatment group received intratympanic dexamethasone (2.5 mg) q.o.d. for a total of four times, while the control group received no medication other than bed rest and medical observations. All the patients were under close care of obstetricians. Pure-tone audiograms were performed before and after treatment.
RESULTS Eleven patients who met the inclusion criteria were assigned to the treatment group (n = 7) and the control group (n = 4). The mean age of patients was 31.2 ± 3.8 years; the right ear was affected in seven (63.64%) cases. Two patients (18.2%) suffered from vertigo, 10 (90.9%) suffered from tinnitus and 6 (54.5%) suffered from aural fullness. The time from onset to clinic visit was relatively short, with a mean time of 1.3 ± 0.9 d. All the women were within the second or third trimester; the average gestation period was 26.0 ± 6.2 wk. The pure-tone averages at onset between the two groups were similar. After one wk of therapy, the treatment group had a curative rate of 57.1% and a significantly better hearing threshold and greater improvement compared to the control group (all P < 0.05). Some patients experienced transient discomfort from intratympanic injections that disappeared after getting rest, while none had permanent complications. All patients delivered healthy full-term neonates with an average Apgar score of 9.7 ± 0.5.
CONCLUSION Intratympanic dexamethasone injections can be used as a first-line therapy in pregnant women with SSNHL.
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Affiliation(s)
- Yan-Lu Lyu
- Department of Otorhinolaryngology–Head and Neck Surgery, Shenzhen People’s Hospital (The Second Clinical Medical College, Jinan University; The First Affiliated Hospital, Southern University of Science and Technology), Shenzhen 518020, Guangdong Province, China
| | - Fan-Qian Zeng
- Department of Otorhinolaryngology–Head and Neck Surgery, Shenzhen People’s Hospital (The Second Clinical Medical College, Jinan University; The First Affiliated Hospital, Southern University of Science and Technology), Shenzhen 518020, Guangdong Province, China
| | - Zhou Zhou
- Department of Otorhinolaryngology–Head and Neck Surgery, Shenzhen People’s Hospital (The Second Clinical Medical College, Jinan University; The First Affiliated Hospital, Southern University of Science and Technology), Shenzhen 518020, Guangdong Province, China
| | - Min Yan
- Department of Otorhinolaryngology–Head and Neck Surgery, Shenzhen People’s Hospital (The Second Clinical Medical College, Jinan University; The First Affiliated Hospital, Southern University of Science and Technology), Shenzhen 518020, Guangdong Province, China
| | - Wei Zhang
- Department of Otorhinolaryngology–Head and Neck Surgery, Shenzhen People’s Hospital (The Second Clinical Medical College, Jinan University; The First Affiliated Hospital, Southern University of Science and Technology), Shenzhen 518020, Guangdong Province, China
| | - Ming Liu
- Department of Otorhinolaryngology–Head and Neck Surgery, Shenzhen People’s Hospital (The Second Clinical Medical College, Jinan University; The First Affiliated Hospital, Southern University of Science and Technology), Shenzhen 518020, Guangdong Province, China
| | - Zhao-Yang Ke
- Department of Otorhinolaryngology–Head and Neck Surgery, Shenzhen People’s Hospital (The Second Clinical Medical College, Jinan University; The First Affiliated Hospital, Southern University of Science and Technology), Shenzhen 518020, Guangdong Province, China
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14
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Nolan LS. Age-related hearing loss: Why we need to think about sex as a biological variable. J Neurosci Res 2020; 98:1705-1720. [PMID: 32557661 DOI: 10.1002/jnr.24647] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2019] [Revised: 04/28/2020] [Accepted: 04/28/2020] [Indexed: 12/12/2022]
Abstract
It has long been known that age-related hearing loss (ARHL) is more common, more severe, and with an earlier onset in men compared to women. Even in the absence of confounding factors such as noise exposure, these sexdifferences in susceptibility to ARHL remain. In the last decade, insight into the pleiotrophic nature by which estrogen signaling can impact multiple signaling mechanisms to mediate downstream changes in gene expression and/or elicit rapid changes in cellular function has rapidly gathered pace, and a role for estrogen signaling in the biological pathways that confer neuroprotection is becoming undeniable. Here I review the evidence why we need to consider sex as a biological variable (SABV) when investigating the etiology of ARHL. Loss of auditory function with aging is frequency-specific and modulated by SABV. Evidence also suggests that differences in cochlear physiology between women and men are already present from birth. Understanding the molecular basis of these sex differences in ARHL will accelerate the development of precision medicine therapies for ARHL.
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Affiliation(s)
- Lisa S Nolan
- Wolfson Centre for Age-Related Diseases, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK
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15
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Kim MT, Lee JH, Carpena NT, Lee MY, Chung PS, Jung JY. Estrogen Replacement Reduces Hearing Threshold Shifts and Cochlear Hair Cell Loss After Acoustic Overexposure in Ovariectomized Rats. Clin Exp Otorhinolaryngol 2020; 14:61-68. [PMID: 32407615 PMCID: PMC7904427 DOI: 10.21053/ceo.2019.01662] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Accepted: 02/05/2020] [Indexed: 11/26/2022] Open
Abstract
Objectives. The relationship of estrogen (the primary female sex hormone) with hearing function has been studied in both humans and animals. However, whether estrogen levels affect hearing remains uncertain. Therefore, in this study, we investigated changes in the vulnerability of hearing to acoustic overexposure in ovariectomized female rats. Methods. Eighteen 8-week-old female Sprague-Dawley rats were separated into four groups as follows: sham ovariectomy (OP), OP only, and OP treated with low (10 µg/kg) or high doses (100 µg/kg) of estrogen. Rats in the estrogen replacement groups were given two intraperitoneal injections. Hearing thresholds were measured before noise exposure, and at 1 day and 2 weeks after exposure. Results. The hearing thresholds of the sham OP and OP-only groups were not significantly different. However, both estrogen groups showed a lower threshold shift than the OP-only group. Histological immunostaining analyses showed that hair cell loss in the 32 kHz region was more severe in the sham OP group than in the OP-only group. Furthermore, there was little or no hair cell loss in either estrogen replacement group and significantly more hair cell loss in the OP-only group. Conclusion. These results suggest that estrogen replacement may reduce the vulnerability of hearing to noise exposure in menopausal women.
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Affiliation(s)
- Min Tae Kim
- Department of Otolaryngology-Head and Neck Surgery, Dankook University Hospital, Cheonan, Korea
| | - Jae-Hun Lee
- Department of Otolaryngology-Head and Neck Surgery, Dankook University Hospital, Cheonan, Korea.,Department of Otolaryngology-Head and Neck Surgery, Dankook University College of Medicine, Cheonan, Korea.,Beckman Laser Institute Korea, Dankook University College of Medicine, Cheonan, Korea
| | - Nathaniel T Carpena
- Department of Otolaryngology-Head and Neck Surgery, Dankook University College of Medicine, Cheonan, Korea
| | - Min Young Lee
- Department of Otolaryngology-Head and Neck Surgery, Dankook University Hospital, Cheonan, Korea.,Department of Otolaryngology-Head and Neck Surgery, Dankook University College of Medicine, Cheonan, Korea.,Beckman Laser Institute Korea, Dankook University College of Medicine, Cheonan, Korea
| | - Phil-Sang Chung
- Department of Otolaryngology-Head and Neck Surgery, Dankook University Hospital, Cheonan, Korea.,Department of Otolaryngology-Head and Neck Surgery, Dankook University College of Medicine, Cheonan, Korea.,Beckman Laser Institute Korea, Dankook University College of Medicine, Cheonan, Korea
| | - Jae Yun Jung
- Department of Otolaryngology-Head and Neck Surgery, Dankook University Hospital, Cheonan, Korea.,Department of Otolaryngology-Head and Neck Surgery, Dankook University College of Medicine, Cheonan, Korea.,Beckman Laser Institute Korea, Dankook University College of Medicine, Cheonan, Korea
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16
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Armstrong NM, Espeland MA, Chen JC, Masaki K, Wactawski-Wende J, Li W, Gass MLS, Stefanick ML, Manson JE, Deal JA, Rapp SR, Lin FR, Resnick SM. Associations of Hearing Loss and Menopausal Hormone Therapy With Change in Global Cognition and Incident Cognitive Impairment Among Postmenopausal Women. J Gerontol A Biol Sci Med Sci 2020; 75:537-544. [PMID: 31326978 PMCID: PMC7205420 DOI: 10.1093/gerona/glz173] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND Hearing loss (HL) and menopausal hormone therapy (conjugated equine estrogens [CEE] and/or medroxyprogesterone acetate [MPA]) are separately associated with cognitive decline and increased risk of incident cognitive impairment. Joint effects of HL and HT could be associated with additive or synergistic decline in global cognition and risk of incident cognitive impairment among postmenopausal women. METHODS Using the Women's Health Initiative (WHI) Memory Study, 7,220 postmenopausal women with measures of HL, global cognition (Modified Mini-Mental State Examination score), and cognitive impairment (centrally adjudicated diagnoses of mild cognitive impairment and dementia) from 1996 to 2009. Multivariable linear mixed-effects models were used to analyze rate of change in global cognition. Accelerated failure time models were used to evaluate time to incident cognitive impairment, stratified by HT. RESULTS Within the CEE-Alone trial, observed adverse effects of CEE-Alone on change in global cognition did not differ by HL, and estimated joint effects of HL and CEE-Alone were not associated with incident cognitive impairment. Within the CEE+MPA trial, while HL did not independently accelerate time to cognitive impairment, the adverse effect of CEE+MPA on global cognition was heightened in older women with HL. Older women on CEE+MPA either with HL (time ratio [TR] = 0.82, 95% confidence interval [CI]: 0.71, 0.94) or with normal hearing (TR = 0.86, 95% CI: 0.76, 0.97) had faster time to cognitive impairment than those with normal hearing and placebo. CONCLUSIONS HL may accentuate the adverse effect of CEE+MPA, not CEE-Alone, on global cognitive decline, not incident cognitive impairment, among postmenopausal women on HT.
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Affiliation(s)
- Nicole M Armstrong
- Laboratory of Behavioral Neuroscience, National Institute of Aging, Baltimore, Maryland
| | - Mark A Espeland
- Department of Biostatistics and Data Science, Wake Forest School of Medicine, Winston-Salem, North Carolina
| | - Jiu-Chiuan Chen
- Department of Preventive Medicine and Neurology, Keck School of Medicine of University of Southern California, Los Angeles, California
| | - Kamal Masaki
- Department of Geriatric Medicine, John A. Burns School of Medicine, University of Hawai`i Manoa, Honolulu, Hawaii
| | - Jean Wactawski-Wende
- Department of Epidemiology and Environmental Health, School of Public Health and Health Professions, University of Buffalo, New York
| | - Wenjun Li
- Department of Medicine, University of Massachusetts Medical School, Worcester, Massachusetts
| | - Margery L S Gass
- Department of Obstetrics & Gynecology, University of Cincinnati, Cincinnati, Ohio
| | - Marcia L Stefanick
- Department of Medicine, Stanford University School of Medicine, Stanford, California
- Obstetrics and Gynecology, Stanford University School of Medicine, Stanford, California
- Health Research and Policy, Stanford Prevention Research Center, Stanford University School of Medicine, Stanford, California
| | - JoAnn E Manson
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, Massachusetts
- Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts
| | - Jennifer A Deal
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland
- Cochlear Center for Hearing and Public Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland
- Department of Otolaryngology-Head and Neck Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Stephen R Rapp
- Department of Psychiatry and Behavioral Medicine, Wake Forest School of Medicine, Winston-Salem, North Carolina
| | - Frank R Lin
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland
- Cochlear Center for Hearing and Public Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland
- Department of Otolaryngology-Head and Neck Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland
- Department of Mental Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland
| | - Susan M Resnick
- Laboratory of Behavioral Neuroscience, National Institute of Aging, Baltimore, Maryland
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17
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Burke SM, van Heesewijk JO, Menks WM, Klink DT, Kreukels BPC, Cohen-Kettenis PT, Bakker J. Postnatal Effects of Sex Hormones on Click-Evoked Otoacoustic Emissions: A Study of Adolescents with Gender Dysphoria. Arch Sex Behav 2020; 49:455-465. [PMID: 32056039 PMCID: PMC7031217 DOI: 10.1007/s10508-020-01652-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/25/2017] [Revised: 01/25/2020] [Accepted: 01/27/2020] [Indexed: 06/10/2023]
Abstract
Click-evoked otoacoustic emissions (CEOAEs) are echo-like sounds, generated by the inner ear in response to click-stimuli. A sex difference in emission strength is observed in neonates and adults, with weaker CEOAE amplitudes in males. These differences are assumed to originate from testosterone influences during prenatal male sexual differentiation and to remain stable throughout life. However, recent studies suggested activational, postnatal effects of sex hormones on CEOAEs. Adolescents diagnosed with gender dysphoria (GD) may receive gonadotropin-releasing hormone analogs (GnRHa) in order to suppress endogenous sex hormones and, therefore, pubertal maturation, followed by cross-sex hormone (CSH) treatment. Using a cross-sectional design, we examined whether hormonal interventions in adolescents diagnosed with GD (62 trans boys, assigned female at birth, self-identifying as male; 43 trans girls, assigned male at birth, self-identifying as female), affected their CEOAEs compared to age- and sex-matched controls (44 boys, 37 girls). Sex-typical differences in CEOAE amplitude were observed among cisgender controls and treatment-naïve trans boys but not in other groups with GD. Treatment-naïve trans girls tended to have more female-typical CEOAEs, suggesting hypomasculinized early sexual differentiation, in support of a prominent hypothesis on the etiology of GD. In line with the predicted suppressive effects of androgens, trans boys receiving CSH treatment, i.e., testosterone plus GnRHa, showed significantly weaker right-ear CEOAEs compared with control girls. A similar trend was seen in trans boys treated with GnRHa only. Unexpectedly, trans girls showed CEOAE masculinization with addition of estradiol. Our findings show that CEOAEs may not be used as an unequivocal measure of prenatal androgen exposure as they can be modulated postnatally by sex hormones, in the form of hormonal treatment.
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Affiliation(s)
- Sarah M Burke
- Department of Medical Psychology, Center of Expertise on Gender Dysphoria, Amsterdam University Medical Centers, 1081 HX, Amsterdam, The Netherlands
- Department of Developmental and Educational Psychology, Brain and Development Research Center, Leiden University, Leiden, The Netherlands
| | - Jason O van Heesewijk
- Department of Medical Psychology, Center of Expertise on Gender Dysphoria, Amsterdam University Medical Centers, 1081 HX, Amsterdam, The Netherlands.
| | - Willeke M Menks
- Donders Institute for Brain, Cognition and Behaviour, Radboud University, Nijmegen, The Netherlands
| | - Daniel T Klink
- Department of Pediatric Endocrinology, Center of Expertise on Gender Dysphoria, Amsterdam University Medical Centers, Location VUmc, Amsterdam, The Netherlands
- Pediatrics and Genetics Research Unit, Division of Pediatric Endocrinology, Department of Pediatrics, Ghent University Hospital, Ghent University, Ghent, Belgium
| | - Baudewijntje P C Kreukels
- Department of Medical Psychology, Center of Expertise on Gender Dysphoria, Amsterdam University Medical Centers, 1081 HX, Amsterdam, The Netherlands
| | - Peggy T Cohen-Kettenis
- Department of Medical Psychology, Center of Expertise on Gender Dysphoria, Amsterdam University Medical Centers, 1081 HX, Amsterdam, The Netherlands
| | - Julie Bakker
- GIGA Neuroscience, University of Liege, Liège, Belgium
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18
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Abstract
PURPOSE This study explores the changes in hearing thresholds in pregnancy. MATERIALS AND METHODS A prospective hospital-based observational study was performed with a total of 69 patients in the age-group of 18 to 40 years. Patients underwent hearing assessment twice during the study period. Conventional pure tone audiometry and impedance audiometry were performed, first during the antepartum period (28-32 weeks of gestational age) and second time during the postpartum period (6 weeks postpartum). RESULTS Significant difference was seen between the average of air conduction threshold values at speech frequencies when antepartum values were compared with postpartum values. CONCLUSION The alterations in hearing sensitivity in pregnant females which improved during the postpartum period can be attributed to pregnancy.
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Affiliation(s)
- Devanshu Kwatra
- Department of Otorhinolaryngology and Head and Neck Surgery, 28856Lady Hardinge Medical College & Associated Hospitals, New Delhi, India
| | - Sunil Kumar
- Department of Otorhinolaryngology and Head and Neck Surgery, 28856Lady Hardinge Medical College & Associated Hospitals, New Delhi, India
| | - Gautam Bir Singh
- Department of Otorhinolaryngology and Head and Neck Surgery, 28856Lady Hardinge Medical College & Associated Hospitals, New Delhi, India
| | - Ratna Biswas
- Department of Obstetrics and Gynaecology, 288561Lady Hardinge Medical College & Associated Hospitals, New Delhi, India
| | - Prabhakar Upadhyay
- Department of Otorhinolaryngology and Head and Neck Surgery, 28856Lady Hardinge Medical College & Associated Hospitals, New Delhi, India
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19
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Abstract
Sudden sensorineural hearing loss (SSNHL) is a relatively rare, but distressing, disease in pregnant women. Little is known about the causes, clinical manifestations, treatments, and prognosis of SSNHL. Some hypotheses have been proposed to explain the pathophysiological mechanism of SSNHL, but most of them have not been identified. This article reviews the existing literature to present a summary of this clinical problem. Most patients suffer from SSNHL in the second or third trimester, and show moderate to profound hearing loss. The interval between the initial treatment and onset of hearing loss is less than 10 days in most patients. Some patients with SSNHL show tinnitus, vertigo, or dizziness, and fullness of the ear. Although some patients have a tendency for self-cure, treatment with intravenous dextran 40 combined with intratympanic corticosteroids is probably a safe and effective therapeutic strategy for pregnant patients with SSNHL. Further clinical research is necessary to identify the best therapeutic strategy for these patients.
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Affiliation(s)
- Shaobing Xie
- Department of Otolaryngology Head and Neck Surgery, Xiangya Hospital of Central South University, Changsha, Hunan, PR China.,Key Laboratory of Otolaryngology Major Diseases Research of Hunan Province, Changsha, Hunan, PR China
| | - Xuewen Wu
- Department of Otolaryngology Head and Neck Surgery, Xiangya Hospital of Central South University, Changsha, Hunan, PR China.,Key Laboratory of Otolaryngology Major Diseases Research of Hunan Province, Changsha, Hunan, PR China.,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital of Central South University, Changsha, Hunan, PR China
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20
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Shuster BZ, Depireux DA, Mong JA, Hertzano R. Sex differences in hearing: Probing the role of estrogen signaling. J Acoust Soc Am 2019; 145:3656. [PMID: 31255106 PMCID: PMC6588519 DOI: 10.1121/1.5111870] [Citation(s) in RCA: 57] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Revised: 04/07/2019] [Accepted: 04/18/2019] [Indexed: 05/08/2023]
Abstract
Hearing loss is the most common form of sensory impairment in humans, with an anticipated rise in incidence as the result of recreational noise exposures. Hearing loss is also the second most common health issue afflicting military veterans. Currently, there are no approved therapeutics to treat sensorineural hearing loss in humans. While hearing loss affects both men and women, sexual dimorphism is documented with respect to peripheral and central auditory physiology, as well as susceptibility to age-related and noise-induced hearing loss. Physiological differences between the sexes are often hormone-driven, and an increasing body of literature demonstrates that the hormone estrogen and its related signaling pathways may in part, modulate the aforementioned differences in hearing. From a mechanistic perspective, understanding the underpinnings of the hormonal modulation of hearing may lead to the development of therapeutics for age related and noise induced hearing loss. Here the authors review a number of studies that range from human populations to animal models, which have begun to provide a framework for understanding the functional role of estrogen signaling in hearing, particularly in normal and aberrant peripheral auditory physiology.
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Affiliation(s)
- Benjamin Z Shuster
- Department of Otorhinolaryngology Head and Neck Surgery, University of Maryland School of Medicine, 16 South Eutaw Street, Suite 500, Baltimore, Maryland 21201, USA
| | - Didier A Depireux
- Department of Otorhinolaryngology Head and Neck Surgery, University of Maryland School of Medicine, 16 South Eutaw Street, Suite 500, Baltimore, Maryland 21201, USA
| | - Jessica A Mong
- Department of Pharmacology, University of Maryland School of Medicine, 655 West Baltimore Street, Baltimore, Maryland 21201, USA
| | - Ronna Hertzano
- Department of Otorhinolaryngology Head and Neck Surgery, University of Maryland School of Medicine, 16 South Eutaw Street, Suite 500, Baltimore, Maryland 21201, USA
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21
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Williamson TT, Ding B, Zhu X, Frisina RD. Hormone replacement therapy attenuates hearing loss: Mechanisms involving estrogen and the IGF-1 pathway. Aging Cell 2019; 18:e12939. [PMID: 30845368 PMCID: PMC6516159 DOI: 10.1111/acel.12939] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2018] [Revised: 12/18/2018] [Accepted: 01/06/2019] [Indexed: 12/14/2022] Open
Abstract
Estradiol (E) is a multitasking hormone that plays a prominent role in the reproductive system, and also contributes to physiological and growth mechanisms throughout the body. Frisina and colleagues have previously demonstrated the beneficial effects of this hormone, with E‐treated subjects maintaining low auditory brainstem response (ABR) thresholds relative to control subjects (Proceedings of the National Academy of Sciences of the United States of America, 2006;103:14246; Hearing Research, 2009;252:29). In the present study, we evaluated the functionality of the peripheral and central auditory systems in female CBA/CaJ middle‐aged mice during and after long‐term hormone replacement therapy (HRT) via electrophysiological and molecular techniques. Surprisingly, there are very few investigations about the side effects of HRT in the auditory system after it has been discontinued. Our results show that the long‐term effects of HRT are permanent on ABR thresholds and ABR gap‐in‐noise (GIN) amplitude levels. E‐treated animals had lower thresholds and higher amplitude values compared to other hormone treatment subject groups. Interestingly, progesterone (P)‐treated animals had ABR thresholds that increased but amplitude levels that remained relatively the same throughout treatment. These results were consistent with qPCR experiments that displayed high levels of IGF‐1R in the stria vascularis (SV) of both E and P animal groups compared to combination treatment (E + P) animals. IGF‐1R plays a vital role in mediating anti‐apoptotic responses via the PI3K/AKT pathway. Overall, our findings gain insights into the neuro‐protective properties of E hormone treatments as well as expand the scientific knowledge base to help women decide whether HRT is the right choice for them.
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Affiliation(s)
- Tanika T. Williamson
- Departments of Chemical & Biomedical and Medical Engineering, Global Center for Hearing & Speech Research University of South Florida Tampa Florida
| | - Bo Ding
- Departments of Communication Sciences & Disorders, Global Center for Hearing & Speech Research University of South Florida Tampa Florida
| | - Xiaoxia Zhu
- Departments of Chemical & Biomedical and Medical Engineering, Global Center for Hearing & Speech Research University of South Florida Tampa Florida
| | - Robert D. Frisina
- Departments of Chemical & Biomedical and Medical Engineering, Global Center for Hearing & Speech Research University of South Florida Tampa Florida
- Departments of Communication Sciences & Disorders, Global Center for Hearing & Speech Research University of South Florida Tampa Florida
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22
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Prakash SK, San Roman AK, Crenshaw M, Flink B, Earle K, Los E, Bonnard Å, Lin AE. "Donating our bodies to science": A discussion about autopsy and organ donation in Turner syndrome. Am J Med Genet C Semin Med Genet 2019; 181:36-42. [PMID: 30633443 DOI: 10.1002/ajmg.c.31671] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2018] [Revised: 12/17/2018] [Accepted: 12/18/2018] [Indexed: 12/14/2022]
Abstract
At the Third Turner Resource Network Symposium, a working group presented the results of collaborative discussions about the importance of autopsy in Turner syndrome (TS). Considerable gaps in understanding the causes of death in TS can only be closed by more frequent death investigations and autopsies. The presentation included an overview of autopsy methods, strategies for utilizing autopsy, and biobanking to address research questions about TS, and the role of palliative care in the context of autopsy. This review highlights strategies to promote autopsy and tissue donation, culminating with an action plan to increase autopsy rates in the TS community.
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Affiliation(s)
- Siddharth K Prakash
- Department of Internal Medicine, McGovern Medical School, University of Texas Health Science Center at Houston, Houston, Texas
| | | | - Melissa Crenshaw
- Division of Genetics, Johns Hopkins All Children's Hospital, St. Petersburg, Florida
| | - Barbara Flink
- Turner Syndrome Society of the United States, Houston, Texas
| | - Kimberly Earle
- Department of Pediatrics, Division of Neonatology, McGovern Medical School, University of Texas Health Science Center at Houston, Houston, Texas.,Division of Geriatrics, Hospice and Palliative Medicine, University of Texas Health Science Center at Houston, Houston, Texas
| | - Evan Los
- Department of Pediatrics, Quillen College of Medicine, East Tennessee State University, Johnson City, Tennessee
| | - Åsa Bonnard
- Department of Otorhinolaryngology, Karolinska University Hospital, Stockholm, Sweden
| | - Angela E Lin
- Genetics Unit, MassGeneral Hospital for Children, Boston, Massachusetts
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Bonnard Å, Bark R, Hederstierna C. Clinical update on sensorineural hearing loss in Turner syndrome and the X-chromosome. Am J Med Genet C Semin Med Genet 2019; 181:18-24. [PMID: 30632288 DOI: 10.1002/ajmg.c.31673] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2018] [Accepted: 12/05/2018] [Indexed: 12/26/2022]
Abstract
Hearing loss is one of the major medical concerns in girls and women with Turner syndrome (TS) and has a negative effect on well-being and quality of everyday life. Sensorineural hearing loss is the most common type of hearing loss, affecting more than half of adults with TS. Karyotypes with a loss of the short p-arm on the X-chromosome are more prone to ear and hearing problems. The importance of detecting, investigating, and treating hearing loss with hearing aids cannot be emphasized enough. The pathophysiology of the sensorineural hearing loss in TS is not known, but theories regarding estrogen deficiency, the cell cycle delay hypothesis, IGF-1 deficiency and the possible role of the KDM6A gene are discussed. Due to the diversity of symptoms and conditions within the same karyotype, a combination of genetic factors altered by epigenetic and/or hormonal effects is probable. Further research is needed regarding the pathophysiology of ear and hearing problems in TS to develop new treatment methods.
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Affiliation(s)
- Åsa Bonnard
- Department of Clinical science, Intervention and Technology, Division of Otorhinolaryngology, Karolinska Institutet, Stockholm, Sweden.,Department of Otorhinolaryngology, Karolinska University Hospital, Stockholm, Sweden
| | - Rusana Bark
- Department of Clinical science, Intervention and Technology, Division of Otorhinolaryngology, Karolinska Institutet, Stockholm, Sweden.,Department of Otorhinolaryngology, Karolinska University Hospital, Stockholm, Sweden
| | - Christina Hederstierna
- Department of Clinical science, Intervention and Technology, Division of Otorhinolaryngology, Karolinska Institutet, Stockholm, Sweden.,Department of Otorhinolaryngology, Karolinska University Hospital, Stockholm, Sweden
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Diao H, Zhao L, Qin L, Bai W, Wang K, Zhang J, Chen X, Jiang H, Mao L. Lower expression of prestin and MYO7A correlates with menopause-associated hearing loss. Climacteric 2019; 22:361-369. [PMID: 30612476 DOI: 10.1080/13697137.2018.1547698] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- H. Diao
- Peking University Ninth School of Clinical Medicine, Beijing Shi, China
| | - L. Zhao
- Chinese PLA General Hospital, Beijing Shi, China
| | - L. Qin
- Peking University Health Science Centre, Beijing Shi, China
| | - W. Bai
- Peking University Ninth School of Clinical Medicine, Beijing Shi, China
| | - K. Wang
- Peking University Health Science Centre, Beijing Shi, China
| | - J. Zhang
- Peking University Ninth School of Clinical Medicine, Beijing Shi, China
| | - X. Chen
- Peking University First Hospital, Beijing Shi, China
| | - H. Jiang
- Peking University Health Science Centre, Beijing Shi, China
| | - L. Mao
- Peking University First Hospital, Beijing Shi, China
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Abstract
BACKGROUND Sudden sensorineural hearing loss (SSNHL) may occur during pregnancy with a rare prevalence, and little is known about it. AIMS To retrospectively analyze cases of SSNHL during pregnancy and investigate their clinical characteristics, management and outcome. MATERIAL AND METHODS Records of 30 SSNHL patients during pregnancy were reviewed, including age, localization, duration from onset to treatment, gestation period, accompanying symptoms, initial hearing threshold, final hearing threshold, audiogram, treatment and outcome. RESULTS Twenty-four patients (80.0%) suffered SSNHL in the second trimester or the last trimester with a high rate of tinnitus (70.0%). The initial hearing threshold was 63.4 ± 25.1 dB, and most audiograms were flat and profound. The overall recovery rate was 60.0%, including complete recovery (33.3%) and partial recovery (26.7%). Further, 16 patients received adjuvant intratympanic steroid showed a better audiologic outcome (improvement 27.1 ± 16.4 vs. 15.7 ± 12.0 dB, p = .042) than those who had not. CONCLUSIONS AND SIGNIFICANCE SSNHL during pregnancy often occurred in the second trimester or the last trimester with a severe hearing loss, the most audiogram configurations are flat and profound. Dextran-40 is a safe and beneficial therapy for SSNHL patients during pregnancy and adjuvant intratympanic steroid increase the probability of hearing recovery.
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Affiliation(s)
- Ming Xu
- Department of Otolaryngology-Head and Neck Surgery, The First Affiliated Hospital of University of South China, Hengyang, China
| | - Qingshan Jiang
- Department of Otolaryngology-Head and Neck Surgery, The First Affiliated Hospital of University of South China, Hengyang, China
| | - Hongbo Tang
- Department of Otolaryngology-Head and Neck Surgery, The First Affiliated Hospital of University of South China, Hengyang, China
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Jian H, Yu G, Chen G, Lin N, Wang H. Correlation between auditory-vestibular functions and estrogen levels in postmenopausal patients with Meniere's disease. J Clin Lab Anal 2019; 33:e22626. [PMID: 30030864 PMCID: PMC6430344 DOI: 10.1002/jcla.22626] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2018] [Accepted: 06/30/2018] [Indexed: 11/07/2022] Open
Abstract
BACKGROUND To investigate auditory and vestibular functions, estrogen levels, and its clinical correlation in postmenopausal females with Meniere's disease (MD). METHODS We retrospectively analyzed the serum estradiol (E2) levels and the auditory and vestibular functions measured by auditory brainstem response (ABR) to high click rate, pure-tone audiometry (PTA), and caloric test on postmenopausal women who suffered from MD or not at the Specialist Clinic of Vertigo, Shandong Provincial Hospital, during September 2010 to October 2014. RESULTS A total of 76 postmenopausal patients with MD and 50 healthy postmenopausal controls were included. The patients with MD had lower estrogen levels (22.50 ± 16.66 pg/mL vs 30.69 ± 18.59 pg/mL, P = 0.011), longer I-V interpeak latency of ABR (left 0.22 ± 0.16 mseconds vs 0.18 ± 0.10 mseconds, P = 0.118; right 0.24 ± 0.13 mseconds vs 0.17 ± 0.09 mseconds, P = 0.001), and higher unilateral weakness (UW) value (P < 0.001) in comparison with the controls. The mean pure-tone thresholds of at the speech frequency (500 Hz, 1 kHz, 2 kHz, and 3 kHz) were significantly elevated in patients with MD than those in the controls (left P < 0.001, right P < 0.01). The estradiol level of patients with MD was correlated with ABR latency (left r = -0.229, P < 0.05; right r = -0.220, P < 0.05) and UW value (r = -0.328, P < 0.05), but not with mean pure-tone threshold. CONCLUSIONS Estrogen levels correlated with auditory and vestibular function in postmenopausal patients with MD. Low estrogen may be involved in the microcirculatory disturbance of the inner ear, affecting the occurrence and development of MD.
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Affiliation(s)
- Huirong Jian
- Department of Otolaryngology‐Head and Neck SurgeryShandong Provincial Hospital Affiliated to Shandong UniversityJinanChina
| | - Gang Yu
- Department of Otolaryngology‐Head and Neck SurgeryShandong Provincial Hospital Affiliated to Shandong UniversityJinanChina
| | - Gang Chen
- Department of Otolaryngology‐Head and Neck SurgeryShandong Provincial Hospital Affiliated to Shandong UniversityJinanChina
| | - Naifen Lin
- Department of Otolaryngology‐Head and Neck SurgeryShandong Provincial Hospital Affiliated to Shandong UniversityJinanChina
| | - Haibo Wang
- Department of Otolaryngology‐Head and Neck SurgeryShandong Provincial Hospital Affiliated to Shandong UniversityJinanChina
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Abstract
OBJECTIVE This study aimed to investigate the effect and safety of intratympanic dexamethasone in pregnant women with idiopathic sudden sensorineural hearing loss (ISSNHL). METHODS We performed a prospective study on pregnant women who suffered from ISSNHL and were treated in our clinic during 2016. The patients received intratympanic treatment three to four times a week. A pure tone audiogram (PTA) was performed before treatment and patients were followed up until 2 months after treatment was finished. RESULTS A total of six pregnant women were included. All of the patients tolerated intratympanic treatment well. The mean improvement in hearing was 48 ± 7.33 dB. There were no complications, including permanent perforation of the ear drum or middle ear infection. Each patient delivered a healthy newborn. CONCLUSION Intratympanic dexamethasone is effective and safe for treating pregnant women with ISSNHL. Further randomized, controlled studies on this treatment need to be performed.
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Affiliation(s)
- Yaoyao Fu
- ENT Institute, Eye & ENT Hospital of Fudan University, Shanghai, China
| | - Jianghua Jing
- ENT Institute, Eye & ENT Hospital of Fudan University, Shanghai, China
| | - Tongli Ren
- ENT Institute, Eye & ENT Hospital of Fudan University, Shanghai, China
| | - Hui Zhao
- ENT Institute, Eye & ENT Hospital of Fudan University, Shanghai, China
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Abstract
OBJECTIVE Menopause may be a risk factor for hearing loss, and postmenopausal hormone therapy (HT) has been proposed to slow hearing decline; however, there are no large prospective studies. We prospectively examined the independent relations between menopause and postmenopausal HT and risk of self-reported hearing loss. METHODS Prospective cohort study among 80,972 women in the Nurses' Health Study II, baseline age 27 to 44 years, followed from 1991 to 2013. Baseline and updated information was obtained from detailed validated biennial questionnaires. Cox proportional-hazards regression models were used to examine independent associations between menopausal status and postmenopausal HT and risk of hearing loss. RESULTS After 1,410,928 person-years of follow-up, 18,558 cases of hearing loss were reported. There was no significant overall association between menopausal status, natural or surgical, and risk of hearing loss. Older age at natural menopause was associated with higher risk. The multivariable-adjusted relative risk of hearing loss among women who underwent natural menopause at age 50+ years compared with those aged less than 50 years was 1.10 (95% confidence interval [CI] 1.03, 1.17). Among postmenopausal women, oral HT (estrogen therapy or estrogen plus progestogen therapy) was associated with higher risk of hearing loss, and longer duration of use was associated with higher risk (P trend < 0.001). Compared with women who never used HT, the multivariable-adjusted relative risk of hearing loss among women who used oral HT for 5 to 9.9 years was 1.15 (95% CI 1.06, 1.24) and for 10+ years was 1.21 (95% CI 1.07, 1.37). CONCLUSIONS Older age at menopause and longer duration of postmenopausal HT are associated with higher risk of hearing loss.
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Milon B, Mitra S, Song Y, Margulies Z, Casserly R, Drake V, Mong JA, Depireux DA, Hertzano R. The impact of biological sex on the response to noise and otoprotective therapies against acoustic injury in mice. Biol Sex Differ 2018; 9:12. [PMID: 29530094 PMCID: PMC5848513 DOI: 10.1186/s13293-018-0171-0] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/26/2018] [Accepted: 02/27/2018] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Noise-induced hearing loss (NIHL) is the most prevalent form of acquired hearing loss and affects about 40 million US adults. Among the suggested therapeutics tested in rodents, suberoylanilide hydroxamic acid (SAHA) has been shown to be otoprotective from NIHL; however, these results were limited to male mice. METHODS Here we tested the effect of SAHA on the hearing of 10-week-old B6CBAF1/J mice of both sexes, which were exposed to 2 h of octave-band noise (101 dB SPL centered at 11.3 kHz). Hearing was assessed by measuring auditory brainstem responses (ABR) at 8, 16, 24, and 32 kHz, 1 week before, as well as at 24 h and 15-21 days following exposure (baseline, compound threshold shift (CTS) and permanent threshold shift (PTS), respectively), followed by histologic analyses. RESULTS We found significant differences in the CTS and PTS of the control (vehicle injected) mice to noise, where females had a significantly smaller CTS at 16 and 24 kHz (p < 0.0001) and PTS at 16, 24, and 32 kHz (16 and 24 kHz p < 0.001, 32 kHz p < 0.01). This sexual dimorphic effect could not be explained by a differential loss of sensory cells or synapses but was reflected in the amplitude and amplitude progression of wave I of the ABR, which correlates with outer hair cell (OHC) function. Finally, the frequency of the protective effect of SAHA differed significantly between males (PTS, 24 kHz, p = 0.002) and females (PTS, 16 kHz, p = 0.003), and the magnitude of the protection was smaller in females than in males. Importantly, the magnitude of the protection by SAHA was smaller than the effect of sex as a biological factor in the vehicle-injected mice. CONCLUSIONS These results indicate that female mice are significantly protected from NIHL in comparison to males and that therapeutics for NIHL may have a different effect in males and females. The data highlight the importance of analyzing NIHL experiments from males and females, separately. Finally, these data also raise the possibility of effectors in the estrogen signaling pathway as novel therapeutics for NIHL.
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Affiliation(s)
- Béatrice Milon
- 0000 0001 2175 4264grid.411024.2Department of Otorhinolaryngology - Head and Neck Surgery, University of Maryland, 16 South Eutaw Street, Suite 500, Baltimore, MD 21201 USA
| | - Sunayana Mitra
- 0000 0001 2175 4264grid.411024.2Department of Otorhinolaryngology - Head and Neck Surgery, University of Maryland, 16 South Eutaw Street, Suite 500, Baltimore, MD 21201 USA
| | - Yang Song
- 0000 0001 2175 4264grid.411024.2Institute for Genome Science, University of Maryland School of Medicine, Baltimore, MD 21201 USA
| | - Zachary Margulies
- 0000 0001 2175 4264grid.411024.2Department of Otorhinolaryngology - Head and Neck Surgery, University of Maryland, 16 South Eutaw Street, Suite 500, Baltimore, MD 21201 USA
| | - Ryan Casserly
- 0000 0001 2175 4264grid.411024.2Department of Otorhinolaryngology - Head and Neck Surgery, University of Maryland, 16 South Eutaw Street, Suite 500, Baltimore, MD 21201 USA
| | - Virginia Drake
- 0000 0001 2175 4264grid.411024.2Department of Otorhinolaryngology - Head and Neck Surgery, University of Maryland, 16 South Eutaw Street, Suite 500, Baltimore, MD 21201 USA
| | - Jessica A. Mong
- 0000 0001 2175 4264grid.411024.2Department of Pharmacology, University of Maryland School of Medicine, Baltimore, MD 21201 USA
| | - Didier A. Depireux
- 0000 0001 2175 4264grid.411024.2Department of Otorhinolaryngology - Head and Neck Surgery, University of Maryland, 16 South Eutaw Street, Suite 500, Baltimore, MD 21201 USA ,0000 0001 0941 7177grid.164295.dInstitute for Systems Research, University of Maryland, College Park, MD 20742 USA
| | - Ronna Hertzano
- Department of Otorhinolaryngology - Head and Neck Surgery, University of Maryland, 16 South Eutaw Street, Suite 500, Baltimore, MD, 21201, USA. .,Institute for Genome Science, University of Maryland School of Medicine, Baltimore, MD, 21201, USA. .,Department of Anatomy and Neurobiology, University of Maryland School of Medicine, Baltimore, MD, 21201, USA.
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Balogová Z, Popelář J, Chiumenti F, Chumak T, Burianová JS, Rybalko N, Syka J. Age-Related Differences in Hearing Function and Cochlear Morphology between Male and Female Fischer 344 Rats. Front Aging Neurosci 2018; 9:428. [PMID: 29354051 PMCID: PMC5758597 DOI: 10.3389/fnagi.2017.00428] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2017] [Accepted: 12/13/2017] [Indexed: 12/04/2022] Open
Abstract
Fischer 344 (F344) rats represent a strain that is frequently used as a model for fast aging. In this study, we systematically compare the hearing function during aging in male and female F344 rats, by recording auditory brainstem responses (ABRs) and distortion product otoacoustic emissions (DPOAEs). In addition to this, the functional parameters are correlated with the cochlear histology. The parameters of the hearing function were not different in the young (3-month-old) male and female F344 rats; the gender differences occurred only in adult and aged animals. In 8–24-month-old males, the ABR thresholds were higher and the ABR amplitudes were smaller than those measured in females of the same age. There were no gender differences in the neural adaptation tested by recording ABRs, elicited by a series of clicks with varying inter-click interval (ICI). Amplitudes of DPOAEs in both the males and females decreased with age, but in the males, the decrease of DPOAE amplitudes was faster. In males older than 20 months, the DPOAEs were practically absent, whereas in 20–24-month-old females, the DPOAEs were still measurable. There were no gender differences in the number of surviving outer hair cells (OHC) and the number of inner hair cell ribbon synapses in aged animals. The main difference was found in the stria vascularis (SV). Whereas the SV was well preserved in females up to the age of 24 months, in most of the age-matched males the SV was evidently deteriorated. The results demonstrate more pronounced age-related changes in the cochlear morphology, hearing thresholds, ABR amplitudes and DPOAE amplitudes in F344 males compared with females.
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Affiliation(s)
- Zuzana Balogová
- Institute of Experimental Medicine of the Czech Academy of Sciences, Prague, Czechia
| | - Jiří Popelář
- Institute of Experimental Medicine of the Czech Academy of Sciences, Prague, Czechia
| | | | - Tetyana Chumak
- Institute of Experimental Medicine of the Czech Academy of Sciences, Prague, Czechia
| | | | - Natalia Rybalko
- Institute of Experimental Medicine of the Czech Academy of Sciences, Prague, Czechia
| | - Josef Syka
- Institute of Experimental Medicine of the Czech Academy of Sciences, Prague, Czechia
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Souza DDS, Luckwu B, Andrade WTLD, Pessoa LSDF, Nascimento JAD, Rosa MRDD. Variation in the Hearing Threshold in Women during the Menstrual Cycle. Int Arch Otorhinolaryngol 2017; 21:323-328. [PMID: 29018493 PMCID: PMC5629086 DOI: 10.1055/s-0037-1598601] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2016] [Accepted: 11/03/2016] [Indexed: 10/29/2022] Open
Abstract
Introduction The hormonal changes that occur during the menstrual cycle and their relationship with hearing problems have been studied. However, they have not been well explained. Objective The objective of our study is to investigate the variation in hearing thresholds in women during the menstrual cycle. Method We conducted a cohort and longitudinal study. It was composed of 30 volunteers, aged 18-39 years old, of which 20 were women during the phases of the menstrual cycle and 10 were men (control group) who underwent audiometry and impedance exams, to correlate the possible audiological changes in each phase of the menstrual cycle. Results There were significant changes in hearing thresholds observed during the menstrual cycle phases in the group of women who used hormonal contraceptives and the group who did not use such contraceptives. Improved hearing thresholds were observed in the late follicular phase in the group who did not use hormonal contraceptives and the hearing thresholds at high frequencies were better. Throughout the menstrual cycle phases, the mean variation was 3.6 db HL between weeks in the group who used hormonal contraceptives and 4.09 db HL in the group who did not use them. Conclusions The present study found that there may be a relationship between hearing changes and hormonal fluctuations during the menstrual cycle based on changes in the hearing thresholds of women. In addition, this study suggests that estrogen has an otoprotective effect on hearing, since the best hearing thresholds were found when estrogen was at its maximum peak.
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Affiliation(s)
- Dayse da Silva Souza
- Postgraduate Program in Cognitive Neuroscience and Behavior, Universidade Federal da Paraíba - UFPB, João Pessoa, Paraíba, Brazil
| | - Brunna Luckwu
- Department of Speech Pathology, UFPB, João Pessoa, Paraíba, Brazil
| | | | | | | | - Marine Raquel Diniz da Rosa
- Department of Speech Pathology and of the Postgraduate Program in Cognitive Neuroscience and Behavior, UFPB, João Pessoa, PB, Brazil
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Gravholt CH, Andersen NH, Conway GS, Dekkers OM, Geffner ME, Klein KO, Lin AE, Mauras N, Quigley CA, Rubin K, Sandberg DE, Sas TCJ, Silberbach M, Söderström-Anttila V, Stochholm K, van Alfen-van derVelden JA, Woelfle J, Backeljauw PF. Clinical practice guidelines for the care of girls and women with Turner syndrome: proceedings from the 2016 Cincinnati International Turner Syndrome Meeting. Eur J Endocrinol 2017; 177:G1-G70. [PMID: 28705803 DOI: 10.1530/eje-17-0430] [Citation(s) in RCA: 570] [Impact Index Per Article: 81.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/24/2017] [Accepted: 06/07/2017] [Indexed: 12/14/2022]
Abstract
Turner syndrome affects 25-50 per 100,000 females and can involve multiple organs through all stages of life, necessitating multidisciplinary approach to care. Previous guidelines have highlighted this, but numerous important advances have been noted recently. These advances cover all specialty fields involved in the care of girls and women with TS. This paper is based on an international effort that started with exploratory meetings in 2014 in both Europe and the USA, and culminated with a Consensus Meeting held in Cincinnati, Ohio, USA in July 2016. Prior to this meeting, five groups each addressed important areas in TS care: 1) diagnostic and genetic issues, 2) growth and development during childhood and adolescence, 3) congenital and acquired cardiovascular disease, 4) transition and adult care, and 5) other comorbidities and neurocognitive issues. These groups produced proposals for the present guidelines. Additionally, four pertinent questions were submitted for formal GRADE (Grading of Recommendations, Assessment, Development and Evaluation) evaluation with a separate systematic review of the literature. These four questions related to the efficacy and most optimal treatment of short stature, infertility, hypertension, and hormonal replacement therapy. The guidelines project was initiated by the European Society for Endocrinology and the Pediatric Endocrine Society, in collaboration with The European Society for Pediatric Endocrinology, The Endocrine Society, European Society of Human Reproduction and Embryology, The American Heart Association, The Society for Endocrinology, and the European Society of Cardiology. The guideline has been formally endorsed by the European Society for Endocrinology, the Pediatric Endocrine Society, the European Society for Pediatric Endocrinology, the European Society of Human Reproduction and Embryology and the Endocrine Society. Advocacy groups appointed representatives who participated in pre-meeting discussions and in the consensus meeting.
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Affiliation(s)
- Claus H Gravholt
- Departments of Endocrinology and Internal Medicine
- Departments of Molecular Medicine
| | - Niels H Andersen
- Departments of Cardiology, Aarhus University Hospital, Aarhus, Denmark
| | - Gerard S Conway
- Department of Women's Health, University College London, London, UK
| | - Olaf M Dekkers
- Department of Clinical Epidemiology, Leiden University Medical Centre, Leiden, The Netherlands
| | - Mitchell E Geffner
- The Saban Research Institute, Children's Hospital Los Angeles, Los Angeles, California, USA
| | - Karen O Klein
- Rady Children's Hospital, University of California, San Diego, California, USA
| | - Angela E Lin
- Department of Pediatrics, Medical Genetics Unit, Mass General Hospital for Children, Boston, Massachusetts, USA
| | - Nelly Mauras
- Division of Endocrinology, Nemours Children's Health System, Jacksonville, Florida, USA
| | | | - Karen Rubin
- Connecticut Children's Medical Center, Hartford, Connecticut, USA
| | - David E Sandberg
- Division of Psychology, Department of Pediatrics, University of Michigan, Ann Arbor, Michigan, USA
| | - Theo C J Sas
- Department of Pediatric Endocrinology, Sophia Children's Hospital, Rotterdam, The Netherlands
- Department of Pediatrics, Dordrecht, The Netherlands
| | - Michael Silberbach
- Department of Pediatrics, Doernbecher Children's Hospital, Portland, Oregon, USA
| | | | - Kirstine Stochholm
- Departments of Endocrinology and Internal Medicine
- Center for Rare Diseases, Department of Pediatrics, Aarhus University Hospital, Aarhus, Denmark
| | | | - Joachim Woelfle
- Department of Pediatric Endocrinology, Children's Hospital, University of Bonn, Bonn, Germany
| | - Philippe F Backeljauw
- Cincinnati Children's Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
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Abstract
OBJECTIVE The purpose of this study was to determine the relationship between hormone replacement therapy (HRT) and tinnitus in South Korea using data from the Korea National Health and Nutrition Examination Surveys (KNHANES) (2010-2012). STUDY DESIGN Cross-sectional analysis of a nationwide health survey. METHODS KNHANES is a nationally representative cross-sectional survey of South Korea population. Only postmenopausal women aged 19-65 years were included in the study (n=2736). Auditory function was evaluated using pure-tone audiometric testing according to established KNHANES protocols. Subjects were questioned about their experience with tinnitus. Exogenous hormone-related factors included the starting age and duration of HRT. RESULTS The overall prevalence of tinnitus was 22.2% among postmenopausal women. (1) Tinnitus severity was significantly higher in women using HRT (p=0.0024) and (2) significantly lower in women who breast fed their children (p=0.0386). (3) According to logistic regression models, the longer duration of HRT was significantly associated with increasing tinnitus (OR=1.323, 95% CI 1.007 to 1.737, p=0.0441). CONCLUSION A longer duration of HRT was associated with developing tinnitus in Korean postmenopausal women. Further experimental and epidemiological researches are needed to elucidate the causal relationship between HRT and tinnitus.
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Affiliation(s)
- Seong-Su Lee
- Department of Internal Medicine, Catholic University of Korea, Division of Endocrinology and Metabolism, Seoul, Korea
| | - Kyung-do Han
- Department of Biostatistics, Catholic University of Korea, Seoul, Korea
| | - Young-Hoon Joo
- Department of Otolaryngology-Head and Neck Surgery, College of Medicine, The Catholic University of Korea, Seoul, Korea
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van Hemmen J, Cohen-Kettenis PT, Steensma TD, Veltman DJ, Bakker J. Do sex differences in CEOAEs and 2D:4D ratios reflect androgen exposure? A study in women with complete androgen insensitivity syndrome. Biol Sex Differ 2017; 8:11. [PMID: 28413602 PMCID: PMC5389183 DOI: 10.1186/s13293-017-0132-z] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/15/2016] [Accepted: 03/24/2017] [Indexed: 01/30/2023] Open
Abstract
Background Studies investigating the influence of perinatal hormone exposure on sexually differentiated traits would greatly benefit from biomarkers of these early hormone actions. Click-evoked otoacoustic emissions show sex differences that are thought to reflect differences in early androgen exposure. Women with complete androgen insensitivity syndrome (CAIS), who lack androgen action in the presence of XY-chromosomes, enabled us to study the effect of complete androgen inaction. The main goal was to investigate a possible link between click-evoked otoacoustic emissions and effective androgen exposure and, thus, whether this can be used as a biomarker. In addition, we aimed to replicate the only previous 2nd vs 4th digit-ratio study in women with CAIS, because despite the widely expressed criticisms of the validity of this measure as a biomarker for prenatal androgen exposure, it still is used for this purpose. Methods Click-evoked otoacoustic emissions and digit ratios from women with CAIS were compared to those from control men and women. Results The typical sex differences in click-evoked otoacoustic emissions and digit ratios were replicated in the control groups. Women with CAIS showed a tendency towards feminine, i.e., larger, click-evoked otoacoustic emission amplitudes in the right ear, and a significant female-typical, i.e., larger, digit ratio in the right hand. Although these results are consistent with androgen-dependent development of male-typical click-evoked otoacoustic emission amplitude and 2nd to 4th digit ratios, the within-group variability of these two measures was not reduced in women with CAIS compared with control women. Conclusions In line with previous studies, our findings in CAIS women suggest that additional, non-androgenic, factors mediate male-typical sexual differentiation of digit ratios and click-evoked otoacoustic emissions. Consequently, use of these measures in adults as retrospective markers of early androgen exposure is not recommended.
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Affiliation(s)
- Judy van Hemmen
- Netherlands Institute for Neuroscience, Amsterdam, The Netherlands.,Department of Medical Psychology, Neuroscience Campus Amsterdam, VU University Medical Center, Amsterdam, The Netherlands
| | - Peggy T Cohen-Kettenis
- Department of Medical Psychology, Neuroscience Campus Amsterdam, VU University Medical Center, Amsterdam, The Netherlands
| | - Thomas D Steensma
- Department of Medical Psychology, Neuroscience Campus Amsterdam, VU University Medical Center, Amsterdam, The Netherlands
| | - Dick J Veltman
- Department of Psychiatry, VU University Medical Center, Amsterdam, The Netherlands
| | - Julie Bakker
- Netherlands Institute for Neuroscience, Amsterdam, The Netherlands.,Department of Medical Psychology, Neuroscience Campus Amsterdam, VU University Medical Center, Amsterdam, The Netherlands.,GIGA Neurosciences, University of Liège, Avenue Hippocrate 15, 4000 Liège, Belgium
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Adriztina I, Adnan A, Adenin I, Haryuna SH, Sarumpaet S. Influence of Hormonal Changes on Audiologic Examination in Normal Ovarian Cycle Females: An Analytic Study. Int Arch Otorhinolaryngol 2015; 20:294-299. [PMID: 27746829 PMCID: PMC5063728 DOI: 10.1055/s-0035-1566305] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2015] [Accepted: 09/28/2015] [Indexed: 01/19/2023] Open
Abstract
Introduction There is only limited information from previous studies that suggest that auditory function may be influenced by hormones. Recent advances in the field have exposed the potential role of hormones in modulating the auditory system. Objective This study aims to investigate the relationship between menstrual cycle and outer hair cell function with audiological examination. Methods This is an analytic study with a cross-sectional design. The sampling was a systematic random sampling. We found 49 women with normal menstrual cycle and collected their data through interviews, physical examination, and examination of the ear, with otoscopic and other routine otorhinolaryngology examinations. We evaluated Tympanometry, distortion-product otoacoustic emissions (DPOAE), and pure tone audiometry. Results We found the audiometric threshold worse in the follicular phase than other phases at 4000 Hz of the right ear, and in the ovulation was found best than any other phases at 1000 Hz of the left ear with significant difference. We found significant difference of DPOAE between ovulation time and follicular phase at 3000 Hz and 1000 Hz in the left ear and between ovulation and luteal phased at 2000 Hz, 3000 Hz and 5000 Hz in the right ear and at 1000 Hz in the left ear with p < 0.05. Conclusion The result of this study showed that only a small part of audiometry threshold had a significant difference between each menstrual phase. In other words, we found no correlation between menstrual and audiometry threshold. Nonetheless, there is a correlation between menstrual cycle phase and DPOAE amplitude.
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Affiliation(s)
- Indri Adriztina
- Department of Otorhinolaryngology, Universitas Sumatera Utara, Medan, North Sumatera, Indonesia
| | - Adlin Adnan
- Department of Otorhinolaryngology, Universitas Sumatera Utara, Medan, North Sumatera, Indonesia
| | - Ichwanul Adenin
- Department of Obstetrics and Gynecology, Universitas Sumatera Utara, Medan, North Sumatera, Indonesia
| | - Siti Hajar Haryuna
- Department of Otorhinolaryngology, Universitas Sumatera Utara, Medan, North Sumatera, Indonesia
| | - Sorimuda Sarumpaet
- Department of Epidemiology training research advocacy and teaching, Universitas Sumatera Utara, Medan, North Sumatra, Indonesia
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Abstract
CONCLUSIONS An unexpected rapid hearing decline remained after the 10-year follow up, similar to the hearing decline in 70-year-old women in reference materials. No clear changes concerning hearing in the peri- and postmenopausal period were noted. OBJECTIVE To assess whether hearing decline correlates with menopause and/or cortisol blood levels. METHODS A prospective individual longitudinal study of peri-menopausal women followed for 10 years was performed at baseline, and after 2, 7 and 10 years, respectively. With a starting age of around 51 years, 100 women remained in the study after 10 years. Pure-tone audiometry and cortisol blood testing were performed at all visits. RESULTS A continuous hearing decline, at all frequencies, was found during the follow-up time. The rate of decline during the menopausal period was higher than compared with reference materials for the same age group. The correlation with time for menopause is most apparent at 1 and 3 kHz where the hearing decline is more rapid after menopause than before. Serum cortisol levels did not correlate with rate of hearing decline.
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Affiliation(s)
- Johan Svedbrant
- Department of Clinical Sciences, Intervention and Technology, CLINTEC, Karolinska Institutet
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Skjönsberg Å, Duan M, Johnson AC, Ulfendahl M. Effect of auditory stress agents on heterozygous German waltzing guinea pigs. J Otol 2014. [DOI: 10.1016/j.joto.2015.03.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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Verver EJJ, Freriks K, Sas TCJ, Huygen PLM, Pennings RJE, Smeets DFCM, Hermus ARMM, Menke LA, Wit JM, Otten BJ, van Alfen–van der Velden JAEM, de Muinck Keizer–schrama SMPF, Topsakal V, Admiraal RJC, Timmers HJLM, Kunst HPM. Karyotype-Specific Ear and Hearing Problems in Young Adults With Turner Syndrome and the Effect of Oxandrolone Treatment. Otol Neurotol 2014; 35:1577-84. [DOI: 10.1097/mao.0000000000000406] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Hamilton CK, Navarro-Martin L, Neufeld M, Basak A, Trudeau VL. Early expression of aromatase and the membrane estrogen receptor GPER in neuromasts reveals a role for estrogens in the development of the frog lateral line system. Gen Comp Endocrinol 2014; 205:242-50. [PMID: 24852348 DOI: 10.1016/j.ygcen.2014.05.014] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2014] [Revised: 05/05/2014] [Accepted: 05/08/2014] [Indexed: 11/16/2022]
Abstract
Estrogens and their receptors are present at very early stages of vertebrate embryogenesis before gonadal tissues are formed. However, the cellular source and the function of estrogens in embryogenesis remain major questions in developmental endocrinology. We demonstrate the presence of estrogen-synthesizing enzyme aromatase and G protein-coupled estrogen receptor (GPER) proteins throughout early embryogenesis in the model organism, Silurana tropicalis. We provide the first evidence of aromatase in the vertebrate lateral line. High levels of aromatase were detected in the mantle cells of neuromasts, the mechanosensory units of the lateral line, which persisted throughout the course of development (Nieuwkoop and Faber stages 34-47). We show that GPER is expressed in both the accessory and hair cells. Pharmacological activation of GPER with the agonist G-1 disrupted neuromast development and migration. Future study of this novel estrogen system in the amphibian lateral line may shed light on similar systems such as the mammalian inner ear.
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Affiliation(s)
- Christine K Hamilton
- Centre for Advanced Research in Environmental Genomics, Department of Biology, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - Laia Navarro-Martin
- Centre for Advanced Research in Environmental Genomics, Department of Biology, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - Miriam Neufeld
- Centre for Advanced Research in Environmental Genomics, Department of Biology, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - Ajoy Basak
- Faculty of Health Science, University of Ottawa, Ottawa, Ontario K1H 8M5, Canada
| | - Vance L Trudeau
- Centre for Advanced Research in Environmental Genomics, Department of Biology, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada.
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Ros C, Tercero A, Alobid I, Balasch J, Santamaria J, Mullol J, Castelo-Branco C. Hearing loss in adult women with Turner's syndrome and other congenital hypogonadisms. Gynecol Endocrinol 2014; 30:111-6. [PMID: 24256370 DOI: 10.3109/09513590.2013.856002] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVES To define the patterns and causes of hearing decline associated to Turner's syndrome (TS). METHODS An observational study with three cohorts was designed: 31 TS patients, 15 women with other congenital hypogonadims (OCH) and 41 healthy age-matched women taking contraception. Microotoscopy, standard pure-tone audiometry brain auditory evoked potentials (BAEP) were performed to study hearing function. RESULTS Up to 87% of TS subjects suffered from some degree of hearing loss (HL) in the audiograms, compared with 20% OCH and 27% controls. Sensorineural hearing loss (SNHL) was the most frequent type of hypoacusia found in TS group. BAEP study demonstrated that 61% of TS women showed HL compared to 20% in OCH patients. No significant differences in latencies, amplitudes, and interpeaks of waves I, III and V were found between TS and OCH, nor when compared to reference population. Worse results were observed among the oldest TS patients, those with pure monosomy or isochromosome, and those with a history of recurrent otitis. CONCLUSIONS More than a half of TS females presented HL. SNHL is the most frequent pattern among middle-aged women with TS. Old age, karyotype and recurrent otitis are predisposition factors to produce HL, while oestrogens play a minor role.
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Affiliation(s)
- Cristina Ros
- Unit of Endocrinological Gynaecology, Department of Gynaecology, ICGON
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Abstract
Sex-steroid hormones are well-known regulators of vocal motor behavior in several organisms. A large body of evidence now indicates that these same hormones modulate processing at multiple levels of the ascending auditory pathway. The goal of this review is to provide a comparative analysis of the role of estrogens in vertebrate auditory function. Four major conclusions can be drawn from the literature: First, estrogens may influence the development of the mammalian auditory system. Second, estrogenic signaling protects the mammalian auditory system from noise- and age-related damage. Third, estrogens optimize auditory processing during periods of reproductive readiness in multiple vertebrate lineages. Finally, brain-derived estrogens can act locally to enhance auditory response properties in at least one avian species. This comparative examination may lead to a better appreciation of the role of estrogens in the processing of natural vocalizations and mayprovide useful insights toward alleviating auditory dysfunctions emanating from hormonal imbalances.
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Affiliation(s)
- Melissa L Caras
- Neurobiology and Behavior Graduate Program, University of Washington, 1959 NE Pacific St., Seattle, WA 98195, USA; Virginia Merrill Bloedel Hearing Research Center, University of Washington, 1959 NE Pacific St., Seattle, WA 98195, USA.
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Marano RJ, Tickner J, Redmond SL. Prolactin expression in the cochlea of aged BALB/c mice is gender biased and correlates to loss of bone mineral density and hearing loss. PLoS One 2013; 8:e63952. [PMID: 23667691 PMCID: PMC3646833 DOI: 10.1371/journal.pone.0063952] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2012] [Accepted: 04/10/2013] [Indexed: 11/19/2022] Open
Abstract
Prolactin is a versatile hormone with over 300 known functions and predominantly expressed in the pituitary. However, its expression has additionally been found in a number of extrapituitary organs. Recently, we described the expression of prolactin in the inner ear of mice, where it was correlated to age. Previous research has shown prolactin to be linked to abnormal bone metabolism and hearing loss due to changes in morphology of the bony otic capsule. Here we further investigated the relationship between prolactin, hearing loss and cochlea bone metabolism. BALB/c mice were tested for hearing using ABR at 6 and 12 months of age. Bone mineral density of the cochlea was evaluated using microCT scanning. Prolactin expression was calculated using quantitative real time PCR. Expression of the key regulators of bone metabolism, osteoprotegerin and receptor activator of nuclear factor-kappaB ligand were also determined. We found that prolactin expression was exclusive to the female mice. This also correlated to a greater threshold shift in hearing for the females between 6 and 12 months of age. Analyses of the cochlea also show that the bone mineral density was lower in females compared to males. However, no gender differences in expression of osteoprotegerin or receptor activator of nuclear factor-kappaB ligand could be found. Further analysis of cochlea histological sections revealed larger ostocyte lacunae in the females. These results provide a possible mechanism for an age related hearing loss sub-type that is associated with gender and provides clues as to how this gender bias in hearing loss develops. In addition, it has the potential to lead to treatment for this specific type of hearing loss.
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Affiliation(s)
- Robert J Marano
- Ear Science Institute Australia, Subiaco, Western Australia, Australia.
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Abstract
Sex steroids modulate vertebrate sensory processing, but the impact of circulating hormone levels on forebrain function remains unclear. We tested the hypothesis that circulating sex steroids modulate single-unit responses in the avian telencephalic auditory nucleus, field L. We mimicked breeding or nonbreeding conditions by manipulating plasma 17β-estradiol levels in wild-caught female Gambel's white-crowned sparrows (Zonotrichia leucophrys gambelii). Extracellular responses of single neurons to tones and conspecific songs presented over a range of intensities revealed that estradiol selectively enhanced auditory function in cells that exhibited monotonic rate level functions to pure tones. In these cells, estradiol treatment increased spontaneous and maximum evoked firing rates, increased pure tone response strengths and sensitivity, and expanded the range of intensities over which conspecific song stimuli elicited significant responses. Estradiol did not significantly alter the sensitivity or dynamic ranges of cells that exhibited non-monotonic rate level functions. Notably, there was a robust correlation between plasma estradiol concentrations in individual birds and physiological response properties in monotonic, but not non-monotonic neurons. These findings demonstrate that functionally distinct classes of anatomically overlapping forebrain neurons are differentially regulated by sex steroid hormones in a dose-dependent manner.
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Abstract
The aim of this study was to examine the hearing levels of menopausal and premenopausal women of the same age and to evaluate the effect of tibolone on hearing. The study involved 83 postmenopausal women. Cases using tibolone were grouped into the tibolone group (T-group) and women without any hormone therapy were grouped into the non-tibolone group (NT-group). A total of 45 premenopausal women of the same age were taken as controls. Hearing levels of both ears were measured by audiometry. Significantly lower levels of hearing threshold at different levels were detected in the control group compared with the other groups. Postmenopausal women with and without tibolone therapy have poorer thresholds compared with still menstruating women of the same age. Thus, intrinsic oestrogen at physiological levels might slow down hearing loss in ageing women. Tibolone had no negative effect on hearing function.
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Affiliation(s)
- N Köşüş
- Department of Obstetrics and Gynaecology, Fatih University, Ankara, Turkey.
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Snihur A, Hampson E. Oral contraceptive use in women is associated with defeminization of otoacoustic emission patterns. Neuroscience 2012; 210:258-65. [DOI: 10.1016/j.neuroscience.2012.02.006] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2011] [Revised: 02/03/2012] [Accepted: 02/03/2012] [Indexed: 11/25/2022]
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Nakamagoe M, Tabuchi K, Nishimura B, Hara A. Effects of neuroactive steroids on cochlear hair cell death induced by gentamicin. Steroids 2011; 76:1443-50. [PMID: 21856322 DOI: 10.1016/j.steroids.2011.07.014] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/01/2011] [Revised: 07/27/2011] [Accepted: 07/27/2011] [Indexed: 01/22/2023]
Abstract
As neuroactive steroids, sex steroid hormones have non-reproductive effects. We previously reported that 17β-estradiol (βE2) had protective effects against gentamicin (GM) ototoxicity in the cochlea. In the present study, we examined whether the protective action of βE2 on GM ototoxicity is mediated by the estrogen receptor (ER) and whether other estrogens (17α-estradiol (αE2), estrone (E1), and estriol (E3)) and other neuroactive steroids, dehydroepiandrosterone (DHEA) and progesterone (P), have similar protective effects. The basal turn of the organ of Corti was dissected from Sprague-Dawley rats and cultured in a medium containing 100 μM GM for 48h. The effects of βE2 and ICI 182,780, a selective ER antagonist, were examined. In addition, the effects of other estrogens, DHEA and P were tested using this culture system. Loss of outer hair cells induced by GM exposure was compared among groups. βE2 exhibited a protective effect against GM ototoxicity, but its protective effect was antagonized by ICI 182,780. αE2, E1, and E3 also protected hair cells against gentamicin ototoxicity. DHEA showed a protective effect; however, the addition of ICI 182,780 did not affect hair cell loss. P did not have any effect on GM-induced outer hair cell death. The present findings suggest that estrogens and DHEA are protective agents against GM ototoxicity. The results of the ER antagonist study also suggest that the protective action of βE2 is mediated via ER but that of DHEA is not related to its conversion to estrogen and binding to ER. Further studies on neuroactive steroids may lead to new insights regarding cochlear protection.
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MESH Headings
- Animals
- Anti-Bacterial Agents/adverse effects
- Cell Death/drug effects
- Cochlea/cytology
- Cytoprotection/drug effects
- Dehydroepiandrosterone/pharmacology
- Estradiol/pharmacology
- Estrogens/pharmacology
- Gene Expression Regulation/drug effects
- Gentamicins/adverse effects
- Hair Cells, Auditory/cytology
- Hair Cells, Auditory/drug effects
- Hair Cells, Auditory/metabolism
- Hair Cells, Auditory, Outer/cytology
- Hair Cells, Auditory, Outer/drug effects
- Hair Cells, Auditory, Outer/metabolism
- Progesterone/pharmacology
- Rats
- Rats, Sprague-Dawley
- Receptors, Estrogen/antagonists & inhibitors
- Receptors, Estrogen/metabolism
- Steroids/pharmacology
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Affiliation(s)
- Mariko Nakamagoe
- Department of Otolaryngology, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tsukuba, Japan
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Abstract
Tamoxifen has been used extensively in the treatment of breast cancer and other neoplasms. In addition to its well-known action on estrogen receptors it is also known to acutely block chloride channels that participate in cell volume regulation. Tamoxifen's role in preventing cochlear outer hair cell (OHC) swelling in vitro suggested that OHC swelling noted following noise exposure could potentially be a therapeutic target for tamoxifen in its role as a chloride channel blocker to help prevent noise-induced hearing loss. To investigate this possibility, the effects of exposure to tamoxifen on physiologic measures of cochlear function in the presence and absence of subsequent noise exposure were studied. Male Mongolian gerbils (2-4 months old) were randomly assigned to different groups. Tamoxifen at ∼10 mg/kg was administered to one of the groups. Five hours later they were exposed to a one-third octave band of noise centered at 8 kHz in a sound-isolation chamber for 30 min at 108 dB SPL. Compound action potential (CAP) thresholds and distortion product otoacoustic emission (DPOAE) levels were measured 30-35 days following noise exposure. Tamoxifen administration did not produce any changes in CAP thresholds and DPOAE levels when administered by itself in the absence of noise. Tamoxifen causes a significant increase in CAP thresholds from 8 to 15 kHz following noise exposure compared to CAP thresholds in animals exposed to noise alone. No significant differences were seen in the DPOAE levels in the f(2) = 8-15 kHz frequency range where maximum noise-induced increases in CAP thresholds were seen. Contrary to our original expectation, it is concluded that tamoxifen potentiates the degree of damage to the cochlea resulting from noise exposure.
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Affiliation(s)
- Jagan A Pillai
- Department of Communication Sciences and Disorders, 2240 Campus Drive, Northwestern University, Evanston, IL 60208, USA.
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Abstract
Sudden sensorineural hearing loss (SSNHL) may occur during pregnancy, but its prevalence is very low. It is conjectured that SSNHL is closely related to the changes in the cardiovascular system, hematological system, endocrine system, and/or some other systems due to pregnancy. These changes possibly evoke disorders of cochlear circulation or cochlear fluid homeostasis leading to SSNHL. Two SSNHL cases were observed in our clinic, and their clinical features were analyzed. In one patient the SSNHL was likely to be related to the disturbance of cochlear fluid homestasis and in the other it might be induced by some disorders in cochlear circulation. Based on their distinct clinic profiles, we defined a new disease, called "pregnancy-induced sudden sensorineural hearing loss," similar to the definition of "pregnancy-induced hypertension." This study also deepened our understanding of the etiology of SSNHL.
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Affiliation(s)
- Zhi-Qiang Hou
- Department of Otolaryngology Head and Neck Surgery, Chinese PLA Institute of Otolaryngology, Chinese PLA General Hospital, Beijing, China
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Rohmann KN, Bass AH. Seasonal plasticity of auditory hair cell frequency sensitivity correlates with plasma steroid levels in vocal fish. J Exp Biol 2011; 214:1931-42. [PMID: 21562181 PMCID: PMC3092729 DOI: 10.1242/jeb.054114] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/18/2011] [Indexed: 01/14/2023]
Abstract
Vertebrates displaying seasonal shifts in reproductive behavior provide the opportunity to investigate bidirectional plasticity in sensory function. The midshipman teleost fish exhibits steroid-dependent plasticity in frequency encoding by eighth nerve auditory afferents. In this study, evoked potentials were recorded in vivo from the saccule, the main auditory division of the inner ear of most teleosts, to test the hypothesis that males and females exhibit seasonal changes in hair cell physiology in relation to seasonal changes in plasma levels of steroids. Thresholds across the predominant frequency range of natural vocalizations were significantly less in both sexes in reproductive compared with non-reproductive conditions, with differences greatest at frequencies corresponding to call upper harmonics. A subset of non-reproductive males exhibiting an intermediate saccular phenotype had elevated testosterone levels, supporting the hypothesis that rising steroid levels induce non-reproductive to reproductive transitions in saccular physiology. We propose that elevated levels of steroids act via long-term (days to weeks) signaling pathways to upregulate ion channel expression generating higher resonant frequencies characteristic of non-mammalian auditory hair cells, thereby lowering acoustic thresholds.
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Affiliation(s)
- Kevin N Rohmann
- Department of Neurobiology and Behavior, Cornell University, Ithaca, NY 14854, USA.
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Verver E, Freriks K, Thomeer H, Huygen P, Pennings R, Alfen-van der Velden A, Timmers H, Otten B, Cremers C, Kunst H. Ear and hearing problems in relation to karyotype in children with Turner syndrome. Hear Res 2011; 275:81-8. [DOI: 10.1016/j.heares.2010.12.007] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/18/2010] [Revised: 11/15/2010] [Accepted: 12/06/2010] [Indexed: 11/22/2022]
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