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Chang TG, Yao YT, Hsu CY, Yen TT. Exploring the interplay of depression, sleep quality, and hearing in tinnitus-related handicap: insights from polysomnography and pure-tone audiometry. BMC Psychiatry 2024; 24:459. [PMID: 38898451 PMCID: PMC11186200 DOI: 10.1186/s12888-024-05912-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Accepted: 06/13/2024] [Indexed: 06/21/2024] Open
Abstract
BACKGROUND Tinnitus affects approximately 740 million adults globally, involving hearing, emotion, and sleep systems. However, studies using polysomnography and pure-tone audiometry (PTA) are limited. We aimed to assess the correlation between tinnitus and hearing, sleep quality, characteristics, and depression using polysomnography and PTA. METHODS In this cross-sectional study, we divided participants into tinnitus and non-tinnitus groups. We included 100 outpatients (65 with tinnitus, 35 without) from a medical center in Taiwan, who underwent polysomnography and completed rating scales including the Patient Health Questionnaire-9 (PHQ-9), Chinese version of the Pittsburgh Sleep Quality Index (PSQI), and Chinese-Mandarin version of the Tinnitus Handicap Inventory (THI-CM). We analyzed correlations, conducted group comparisons, assessed factors related to THI-CM scores, constructed ROC curves to predict depression in the tinnitus group, and performed multinomial and logistic regression to explore associations. RESULTS Descriptive statistics identified a cohort with mean age 53.9 ± 12.80 years, 63% exhibited PHQ-9 scores ≥ 10, and 66% had Apnea-Hypopnea Index (AHI) > 5. The ratio of rapid eye movement and deep sleep to stage 1 + 2 sleep was relatively low and non-significant. Likewise, leg movements was higher in the tinnitus group but not statistically significant. In the tinnitus group, 63.08% had depression, and 81.54% had AHI > 5. Univariate logistic regression linked tinnitus to AHI > 5 (Odds ratio (OR) 2.67, p = 0.026) and male sex (OR 2.49, p = 0.034). A moderate positive correlation was found between the THI-CM score and PHQ-9 score (rs = 0.50, p < 0.001). Further adjustment for obstructive sleep apnea showed associations between PHQ-9 (total score) or depression and THI-CM Grade 3-5 (OR = 1.28; OR = 8.68). Single- and multifactor regression analyses highlighted significant associations of PSQI scores > 13 (OR 7.06, p = 0.018) and THI-CM scores > 47 (OR 7.43, p = 0.002) with depression. CONCLUSIONS Our study recruited tinnitus participants with slight or mild hearing loss and mild tinnitus handicap. Depression was identified as a predominant factor in tinnitus-related handicap. The mild tinnitus handicap in tinnitus participants may explain the lack of significant differences in depression, sleep quality, and polysomnographic sleep characteristics between tinnitus and non-tinnitus groups. Further extensive and prospective studies are needed to elucidate the complex links among depression, sleep, and tinnitus.
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Affiliation(s)
- Ting-Gang Chang
- Department of Psychiatry, Taichung Veterans General Hospital, Taichung, Taiwan
| | - Yi-Ting Yao
- Department of Otorhinolaryngology, Taichung Veterans General Hospital, Taichung, Taiwan
| | - Chiann-Yi Hsu
- Biostatistics Task Force of Taichung Veterans General Hospital, Taichung, Taiwan
| | - Ting-Ting Yen
- Department of Otorhinolaryngology, Taichung Veterans General Hospital, Taichung, Taiwan.
- School of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan.
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Yadollahpour A, Rashidi S, Saki N, Kunwar PS, Mayo-Yáñez M. Repeated Bilateral Transcranial Direct Current Stimulation over Auditory Cortex for Tinnitus Treatment: A Double-Blinded Randomized Controlled Clinical Trial. Brain Sci 2024; 14:373. [PMID: 38672022 PMCID: PMC11048041 DOI: 10.3390/brainsci14040373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2023] [Revised: 03/28/2024] [Accepted: 04/03/2024] [Indexed: 04/28/2024] Open
Abstract
Transcranial direct current stimulation (tDCS) is a non-invasive and painless technique of brain neuromodulation that applies a low-intensity galvanic current to the scalp with the aim of stimulating specific areas of the brain. Preliminary investigations have indicated the potential therapeutic efficacy of multisession tDCS applied to the auditory cortex (AC) in the treatment of chronic tinnitus. The aim of this study was to explore the therapeutic effects of repeated sessions of bilateral tDCS targeting the AC on chronic tinnitus. A double-blinded randomized placebo-controlled trial was conducted on patients (n = 48) with chronic intractable tinnitus (>2 years duration). Participants were randomly allocated to two groups: one receiving tDCS (n = 26), with the anode/cathode placed over the left/right AC, and the other receiving a placebo treatment (n = 22). A 20 min daily session of 2 mA current was administered for five consecutive days per week over two consecutive weeks, employing 35 cm2 electrodes. Tinnitus handicap inventory (THI) scores, tinnitus loudness, and tinnitus distress were measured using a visual analogue scale (VAS), and were assessed before intervention, immediately after, and at one-month follow-up. Anodal tDCS significantly reduced THI from 72.93 ± 10.11 score to 46.40 ± 15.36 after the last session and 49.68 ± 14.49 at one-month follow-up in 18 out of 25 participants (p < 0.001). The risk ratio (RR) of presenting an improvement of ≥20 points in the THI after the last session was 10.8 in patients treated with tDCS. Statistically significant reductions were observed in distress VAS and loudness VAS (p < 0.001). No statistically significant differences in the control group were observed. Variables such as age, gender, duration of tinnitus, laterality of tinnitus, baseline THI scores, and baseline distress and loudness VAS scores did not demonstrate significant correlations with treatment response. Repeated sessions of bilateral AC tDCS may potentially serve as a therapeutic modality for chronic tinnitus.
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Affiliation(s)
- Ali Yadollahpour
- Department of Psychology, University of Sheffield, Sheffield S1 2LT, UK;
- Bioelectromagnetic Clinic, Imam Khomeini Hospital, Ahvaz Jundishapur University of Medical Sciences, Ahvaz 61357-15794, Iran
| | - Samaneh Rashidi
- Department of Psychology, University of Surrey, Guildford GU2 7XH, UK;
| | - Nader Saki
- Hearing and Speech Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz 61357-15794, Iran;
| | - Pramod Singh Kunwar
- Department of Pharmaceutics and Pharmacy Practice, School of Pharmacy, Mount Kenya University, Thika P.O. Box 342-01000, Kenya;
| | - Miguel Mayo-Yáñez
- Department of Otorhinolaryngology—Head and Neck Surgery, Complexo Hospitalario Universitario A Coruña (CHUAC), 15006 A Coruña, Spain
- Department of Otorhinolaryngology—Head and Neck Surgery, Hospital San Rafael (HSR), 15006 A Coruña, Spain
- Otorhinolaryngology—Head and Neck Surgery Research Group, Institute of Biomedical Research of A Coruña (INIBIC), Complexo Hospitalario Universitario de A Coruña (CHUAC), Universidade da Coruña (UDC), 15006 A Coruña, Spain
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Kelleni MT. Repurposing metformin to manage idiopathic or long COVID Tinnitus: self-report adopting a pathophysiological and pharmacological approach. Inflammopharmacology 2024; 32:945-948. [PMID: 38294616 PMCID: PMC11006725 DOI: 10.1007/s10787-023-01421-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Accepted: 12/24/2023] [Indexed: 02/01/2024]
Abstract
Chronic tinnitus is a common neurological disorder that affects millions of patients globally with no available successful pharmacotherapy. It can be extremely bothersome to some patients to the extent that it occasionally qualifies as a disability that can hinder them from leading a normal life. In this short communication, the author discusses how he suffered from idiopathic tinnitus and how he managed to adopt a combined pathophysiological and pharmacological approach to the reason for the first time in the medical literature that low-dose metformin might be safely and effectively repurposed to manage at least a subset of tinnitus patients while discussing the potential role of adenosine receptor agonists as potential future tinnitus therapeutics.
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Affiliation(s)
- Mina T Kelleni
- Pharmacology Department, College of Medicine, Minia University, Minya, 61111, Egypt.
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Balatsouras DG, Papitsi I, Koukoutsis G, Katotomichelakis M. The effect of MemoVigor 2 on recent-onset idiopathic tinnitus: a randomized double-blind placebo-controlled clinical trial. Front Pharmacol 2024; 15:1252343. [PMID: 38327985 PMCID: PMC10847223 DOI: 10.3389/fphar.2024.1252343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Accepted: 01/10/2024] [Indexed: 02/09/2024] Open
Abstract
Background: Tinnitus is a common symptom associated with the conscious perception of sound in the absence of a corresponding external or internal sound source, which can severely impact quality of life. Because of the current limited understanding of the precise pathophysiological mechanism of idiopathic tinnitus, no curable treatment has been attained yet. A food supplement trading as MemoVigor 2, which contains a combination of therapeutic ingredients with mainly antioxidant activity, has been used in the treatment of tinnitus. The objective of our study was to evaluate the effectiveness of MemoVigor 2 in the treatment of recent-onset idiopathic tinnitus. Methods: In a prospective single-centre randomized, double-blind, placebo-controlled clinical trial we studied 204 patients with idiopathic tinnitus divided into two groups: 104 patients who received MemoVigor 2 and 100 patients treated with placebo. To evaluate changes in tinnitus we used (1) audiometry/tympanometry; (2) specific measures of tinnitus perception, including tinnitus pitch, loudness at tinnitus pitch, loudness at 1 kHz, minimum masking level, and residual inhibition; (3) questionnaires of tinnitus handicap inventory, mini tinnitus questionnaire and patients' global impression of change. All patients underwent this test battery at the beginning of the study and in a repeat post-3-month session. Results: All tinnitus measures, including pitch, loudness, minimum masking level and residual inhibition improved significantly in the intervention group. Most of these measures improved in the placebo group too, but in a lesser degree. All questionnaire scores diminished significantly in both groups, but the degree of decrease was greater in the intervention group. The participants' tinnitus outcome reported after treatment using the patients' global impression of change score differed significantly between the two groups, with greater improvement observed in the intervention group. Conclusion: We found that the use of MemoVigor 2 improved recent-onset tinnitus, as proved by a set of tests performed for its evaluation, including audiometric measures, specific measures of tinnitus perception and tinnitus questionnaires. Tinnitus in the placebo group improved too, but to a lesser degree. Clinical Trial Registration: isrctn.com, Identifier ISRCTN16025480.
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Affiliation(s)
| | - Isidora Papitsi
- Department of Otorhinolaryngology, Tzaneio General Hospital, Piraeus, Greece
| | - George Koukoutsis
- Department of Otorhinolaryngology, Tzaneio General Hospital, Piraeus, Greece
| | - Michael Katotomichelakis
- Department of Otorhinolaryngology, Medical School, Democritus University of Thrace, Komotini, Greece
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Psillas G, Vlachou C. The Effect of Anxiolytics on Tinnitus. J Clin Med 2023; 12:7076. [PMID: 38002689 PMCID: PMC10672175 DOI: 10.3390/jcm12227076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2023] [Accepted: 11/09/2023] [Indexed: 11/26/2023] Open
Abstract
Tinnitus is a perceptual disorder in which sound is perceived by the patient in the absence of an external or internal acoustic stimulation [...].
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Affiliation(s)
- George Psillas
- 1st Otolaryngology Department, Faculty of Health Sciences, School of Medicine, Aristotle University of Thessaloniki, AHEPA Hospital, 1, Stilponos Kyriakidi St., 546 36 Thessaloniki, Greece
| | - Chrysoula Vlachou
- Faculty of Health Sciences, School of Medicine, Aristotle University of Thessaloniki, AHEPA Hospital, 1, Stilponos Kyriakidi St., 546 36 Thessaloniki, Greece
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Kim H, Ha J, Park HY, Choung YH, Jang JH. Efficacy and Safety of Co-Administered St. John's Wort and Ginkgo biloba Extracts in Patients with Subjective Tinnitus: A Preliminary Prospective Randomized Controlled Trial. J Clin Med 2023; 12:jcm12093261. [PMID: 37176699 PMCID: PMC10179387 DOI: 10.3390/jcm12093261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Revised: 04/12/2023] [Accepted: 05/01/2023] [Indexed: 05/15/2023] Open
Abstract
It is widely accepted that extracts of St. John's wort (Hypericum perforatum) improve depressive symptoms, and tinnitus patients commonly presented with either mild depression or anxiety. We investigated whether co-administration of St. John's wort and Ginkgo biloba extracts can suppress tinnitus. Participants with subjective tinnitus aged 30-70 years were randomly assigned to the experimental (co-administration of St. John's wort and Ginkgo biloba extract; n = 20) or control (Ginkgo biloba extract only; n = 26) group for 12 weeks. Participants were blinded to the group assignments. After 12 weeks of treatment, no significant change in the minimum masking level on the tinnitogram was observed in either group. In the co-administration group, the Tinnitus Handicap Inventory (THI) score decreased from 34.7 (SD, 15.9) to 29.6 (16.0) (p = 0.102). However, the control group showed a significant decrease in THI score, from 30.5 (16.7) to 25.6 (17.1) (p = 0.046). Regarding the Short Form-36 Health Survey (SF-36), only the "Social Functioning" domain score changed significantly after extract co-administration, from 74.5 (21.5) to 83.9 (20.5) (p = 0.047). Co-administration of St. John's wort and Ginkgo biloba extracts did not improve the symptoms of subjective tinnitus compared to administration of Ginkgo biloba extract alone.
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Affiliation(s)
- Hantai Kim
- Department of Otorhinolaryngology-Head and Neck Surgery, Konyang University College of Medicine, Daejeon 35365, Republic of Korea
| | - Jungho Ha
- Department of Otolaryngology, Ajou University School of Medicine, Suwon 16499, Republic of Korea
| | - Hun Yi Park
- Department of Otolaryngology, Ajou University School of Medicine, Suwon 16499, Republic of Korea
| | - Yun-Hoon Choung
- Department of Otolaryngology, Ajou University School of Medicine, Suwon 16499, Republic of Korea
| | - Jeong Hun Jang
- Department of Otolaryngology, Ajou University School of Medicine, Suwon 16499, Republic of Korea
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Panhóca VH, de Aquino Junior AE, de Souza VB, Ferreira SA, Ferreira LT, de Oliveira Souza KJ, Tamae PE, Saito Nogueira M, Bagnato VS. Effects of Red and Infrared Laser Therapy in Patients with Tinnitus: A Double-Blind, Clinical, Randomized Controlled Study Combining Light with Ultrasound, Drugs and Vacuum Therapy. J Pers Med 2023; 13:jpm13040581. [PMID: 37108967 PMCID: PMC10144000 DOI: 10.3390/jpm13040581] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Revised: 02/21/2023] [Accepted: 03/20/2023] [Indexed: 03/29/2023] Open
Abstract
Background: tinnitus is a symptom with no specific cause known to date, and there are no associated pharmacogenomics of hearing disorders and no FDA-approved drugs for tinnitus treatment. The effectiveness of drug treatments is not reproducible on idiopathic patients and inexistent in refractory patients. Personalized treatments for these patients are a great clinical need. Our study investigated the outcome of potential alternative and complementary treatment modalities for idiopathic and refractory tinnitus patients. Methods: we were the first to evaluate the tinnitus handicap inventory (THI) score changes over the course of treatment up to 15 days after complete cessation of treatment for novel transmeatal low-level laser therapy (LLLT) modalities using light alone, as well as LLLT combined with vacuum therapy (VT), ultrasound (US), Ginkgo biloba (GB) and flunarizine dihydrochloride (FD), while also comparing all treatment outcomes with laser puncture (LP), FD alone and GB alone. Results: a positive treatment outcome (superior to a placebo effect) was achieved by using either LP or transmeatal LLLT, whereas short-term antagonistic effects of VT, US, GB and FD when combined with LLLT. For transmeatal LLLT, an improvement in the treatment outcome was observed by increasing the irradiation time from 6 min to 15 min (with 100-mW of applied laser power at 660 nm). Finally, a lasting therapeutic effect higher than the placebo was observed at 15 days after treatment upon combining LLLT with VT, GB or by using FD alone, by using the transmeatal LLLT alone or by using LP. Conclusions: LP and Transmeatal LLLT can be promising alternative treatments for idiopathic and refractory tinnitus patients. Future studies should investigate the long-term effects of LLLT in tinnitus patients, as well as the dosimetry and wavelength of transmeatal LLLT.
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Bülow M, Best N, Brugger S, Derlien S, Loudovici-Krug D, Lemhöfer C. The effect of lidocaine iontophoresis for the treatment of tinnitus: a systematic review. Eur Arch Otorhinolaryngol 2023; 280:495-503. [PMID: 36102987 PMCID: PMC9849149 DOI: 10.1007/s00405-022-07645-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Accepted: 09/03/2022] [Indexed: 01/22/2023]
Abstract
PURPOSE Tinnitus is a common symptom with multiple causes and treatment options. Previous studies have investigated the effect of lidocaine iontophoresis. The aim of this review is to systematically present the effects on tinnitus and to derive possible effects. METHODS In accordance to the PRISMA statement, the search and analysis were performed. An abstract in German or English and a performed intervention with lidocaine iontophoresis for the treatment of tinnitus, independent of the study design, were considered as inclusion criteria. Due to the heterogeneity of the studies, only a narrative synthesis was performed. RESULTS The search yielded 179 studies of which 170 were excluded. Six full-texts and three abstracts were included. In total, 957 patients were treated with lidocaine iontophoresis. The percent improvement in symptoms after lidocaine iontophoresis ranged from 4% to 62%. The qualitative assessment of the studies resulted in an overall "weak" rating for all of them. CONCLUSIONS Due to the heterogeneity and the limited quality of the studies found, no clear statement can be made about the efficacy. The number of those who benefited from therapy varied widely. In addition, it cannot be ruled out that the effect was merely due to electrical stimulation of the cochlea.
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Affiliation(s)
- Marcus Bülow
- Institute for Physiotherapy, University Hospital Jena, Am Klinikum 1, 07743, Jena, Germany
| | - Norman Best
- Institute for Physiotherapy, University Hospital Jena, Am Klinikum 1, 07743, Jena, Germany
| | - Sebastian Brugger
- Institute for Physiotherapy, University Hospital Jena, Am Klinikum 1, 07743, Jena, Germany
| | - Steffen Derlien
- Institute for Physiotherapy, University Hospital Jena, Am Klinikum 1, 07743, Jena, Germany
| | - Dana Loudovici-Krug
- Institute for Physiotherapy, University Hospital Jena, Am Klinikum 1, 07743, Jena, Germany
| | - Christina Lemhöfer
- Institute for Physiotherapy, University Hospital Jena, Am Klinikum 1, 07743, Jena, Germany.
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Grundfast KM, Jamil TL. Evaluation and Management of Tinnitus: Are There Opportunities for Improvement? Otolaryngol Head Neck Surg 2023; 168:45-58. [PMID: 35349391 DOI: 10.1177/01945998221088286] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Accepted: 03/02/2022] [Indexed: 11/17/2022]
Abstract
OBJECTIVE To review current information about diagnosis and management of tinnitus aiming to identify opportunities for achieving a cost-effective, efficient, evidence-based approach that meets the needs of tinnitus sufferers. DATA SOURCES PubMed/MEDLINE. REVIEW METHODS In total, 249 relevant published reports were reviewed. Pertinent keywords and MeSH terms identified reports via PubMed and EMBASE. Acknowledged experts were consulted on ways to improve tinnitus management. CONCLUSIONS There may be opportunities to improve evaluation and management of patients with tinnitus using modern modes of communication and a multidisciplinary therapeutic approach. IMPLICATIONS FOR PRACTICE Tinnitus can adversely affect quality of life while being time-consuming and costly to evaluate and manage. Based on both personal experience and the reports of others, patients with tinnitus who choose to see a physician primarily want to know two things: (1) that the tinnitus that is so distressing will not remain at the same level of severity forever and (2) that something can be done to help cope with the tinnitus that is so annoying. Recent advancements in internet communications, social media, information technology, artificial intelligence, machine learning, holistic medical care, mind-body integrative health care, and multidisciplinary approaches in medical therapeutics may be possibly making new ways of meeting the needs of patients with tinnitus.
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Affiliation(s)
- Kenneth M Grundfast
- Boston University School of Medicine, Boston, Massachusetts, USA
- Department of Otolaryngology-Head and Neck Surgery, Boston Medical Center, Boston, Massachusetts, USA
- Otology Service, Massachusetts Eye and Ear Infirmary, Boston, Massachusetts, USA
| | - Taylor L Jamil
- Boston University School of Medicine, Boston, Massachusetts, USA
- Boston University School of Public Health, Boston, Massachusetts, USA
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Bhatt IS, Wilson N, Dias R, Torkamani A. A genome-wide association study of tinnitus reveals shared genetic links to neuropsychiatric disorders. Sci Rep 2022; 12:22511. [PMID: 36581688 PMCID: PMC9800371 DOI: 10.1038/s41598-022-26413-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Accepted: 12/14/2022] [Indexed: 12/30/2022] Open
Abstract
Tinnitus, a phantom perception of sound in the absence of any external sound source, is a prevalent health condition often accompanied by psychiatric comorbidities. Recent genome-wide association studies (GWAS) highlighted a polygenic nature of tinnitus susceptibility. A shared genetic component between tinnitus and psychiatric conditions remains elusive. Here we present a GWAS using the UK Biobank to investigate the genetic processes linked to tinnitus and tinnitus-related distress, followed by gene-set enrichment analyses. The UK Biobank sample comprised 132,438 individuals with tinnitus and genotype data. Among the study sample, 38,525 individuals reported tinnitus, and 26,889 participants mentioned they experienced tinnitus-related distress in daily living. The genome-wide association analyses were conducted on tinnitus and tinnitus-related distress. We conducted enrichment analyses using FUMA to further understand the genetic processes linked to tinnitus and tinnitus-related distress. A genome-wide significant locus (lead SNP: rs71595470) for tinnitus was obtained in the vicinity of GPM6A. Nineteen independent loci reached suggestive association with tinnitus. Fifteen independent loci reached suggestive association with tinnitus-related distress. The enrichment analysis revealed a shared genetic component between tinnitus and psychiatric traits, such as bipolar disorder, feeling worried, cognitive ability, fast beta electroencephalogram, and sensation seeking. Metabolic, cardiovascular, hematological, and pharmacological gene sets revealed a significant association with tinnitus. Anxiety and stress-related gene sets revealed a significant association with tinnitus-related distress. The GWAS signals for tinnitus were enriched in the hippocampus and cortex, and for tinnitus-related distress were enriched in the brain and spinal cord. This study provides novel insights into genetic processes associated with tinnitus and tinnitus-related distress and demonstrates a shared genetic component underlying tinnitus and psychiatric conditions. Further collaborative attempts are necessary to identify genetic components underlying the phenotypic heterogeneity in tinnitus and provide biological insight into the etiology.
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Affiliation(s)
- Ishan Sunilkumar Bhatt
- grid.214572.70000 0004 1936 8294Department of Communication Sciences & Disorders, University of Iowa, 250 Hawkins Dr, Iowa City, IA 52242 USA
| | - Nicholas Wilson
- Department of Integrative Structural and Computational Biology Scripps Science Institute, La Jolla, CA 92037 USA
| | - Raquel Dias
- grid.15276.370000 0004 1936 8091Department of Microbiology and Cell Science, University of Florida, Gainesville, FL 32608 USA
| | - Ali Torkamani
- Department of Integrative Structural and Computational Biology Scripps Science Institute, La Jolla, CA 92037 USA
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