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Al Samarrai ARH, Mahdi BM, Parham K. Relationship of Serum Prestin Levels to the Severity of Sensorineural Hearing Loss. Cureus 2024; 16:e53763. [PMID: 38465090 PMCID: PMC10921123 DOI: 10.7759/cureus.53763] [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] [Accepted: 02/07/2024] [Indexed: 03/12/2024] Open
Abstract
OBJECTIVE Prestin is an outer hair cell (OHC) protein responsible for increasing cochlear sensitivity and has been proposed as a biomarker. We aimed to evaluate whether the serum prestin level is related to the severity of chronic sensorineural hearing loss (SNHL). METHODS Ninety subjects were recruited from the patient base at Samarra public hospitals and clinics in Iraq from January to October of 2022. They were divided into three groups equally: a group of healthy people without hearing loss (G0), a group with moderate SNHL (G1), and a group with severe SNHL (G2). The subjects ranged from 20 to 80 years of age and included 51 males and 39 females. Blood samples were collected, then serum was separated, and enzyme-linked immunosorbent assays were performed to quantify the levels of prestin. RESULTS Hearing thresholds were sequentially statistically higher across the three groups. While prestin levels were significantly higher in G1 and G2 than that in G0, there were no differences between the G1 and G2 levels. Serum prestin levels were positively correlated with hearing thresholds in G1, but not G2. CONCLUSION Our results suggest that in the clinical setting, prestin is sensitive to chronic mild to moderate SNHL (i.e., up to 40-60 dB), not more severe loss. This range is consistent with the added sensitivity provided by OHCs in the cochlea and provides support for prestin as a biomarker of OHC-mediated SNHL.
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Affiliation(s)
| | - Bakr M Mahdi
- Department of Otolaryngology, Samarra General Hospital, Samarra, IRQ
| | - Kourosh Parham
- Department of Otolaryngology-Head and Neck Surgery, University of Connecticut Health, Farmington, USA
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Singh A, Yadav H, Verma H, Sikka K, Abraham RA, Irugu DVK. Normal Serum Levels of Otolin-1 in Patients with Meniere Disease in Remission. Int Arch Otorhinolaryngol 2023; 27:e440-e444. [PMID: 37564467 PMCID: PMC10411270 DOI: 10.1055/s-0042-1749390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2021] [Accepted: 04/17/2022] [Indexed: 08/12/2023] Open
Abstract
Introduction Degenerative changes in the otolithic organs have been theorized to be caused by the mechanical obstruction to endolymphatic flow, possibly resulting in endolymphatic hydrops (ELH). Otolin-1 is an otoconial matrix protein that crosses the blood labyrinth barrier and has been found in the serum of healthy and diseased patients. Objective To measure the serum levels of Otolin-1 in Meniere disease (MD) patients and compared them with the healthy individuals. Methods This pilot, cross-sectional study was performed at our tertiary care referral center to compare the serum Otolin-1 levels of healthy individuals with those of MD patients. The blood samples were obtained during patients' visit to the vertigo clinic following remission of an acute episode. The data was analyzed using the Stata/SE version 12.0 (StataCorp. College Station, TX, USA). Comparison between the serum Otolin-1 levels in the two groups was performed using the unpaired t -test. A p -value of 0.05 was considered to be statistically significant. Results The participants were divided into two groups, with 31 MD patients, and 30 age and gender-matched members of the control group. The serum levels of Otolin-1 in MD patients (247.6, ± 44.2 pg/ml) were not found to be significantly different from those of the control group (236.2, ± 43.5 pg/ml) ( p = 0.31). Conclusion The current study reveals that the serum levels of Otolin-1 are not significantly different between the patients with MD in the interictal phase and the control group's healthy ones.
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Affiliation(s)
- Anup Singh
- Department of Otorhinolaryngology and Head and Neck Surgery, All India Institute of Medical Sciences, New Delhi, India.
| | - Harsha Yadav
- Department of Otorhinolaryngology and Head and Neck Surgery, All India Institute of Medical Sciences, New Delhi, India.
| | - Hitesh Verma
- Department of Otorhinolaryngology and Head and Neck Surgery, All India Institute of Medical Sciences, New Delhi, India.
| | - Kapil Sikka
- Department of Otorhinolaryngology and Head and Neck Surgery, All India Institute of Medical Sciences, New Delhi, India.
| | - Ransi Ann Abraham
- Department of Cardiac Biochemistry, All India Institute of Medical Sciences, New Delhi, India.
| | - David Victor Kumar Irugu
- Department of Otorhinolaryngology and Head and Neck Surgery, All India Institute of Medical Sciences, New Delhi, India.
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Liu X, Han K, Zhou M, Wu Y. Association between otolin-1 and benign paroxysmal positional vertigo: A meta-analysis. Front Neurol 2022; 13:950023. [PMID: 36601298 PMCID: PMC9806859 DOI: 10.3389/fneur.2022.950023] [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: 05/22/2022] [Accepted: 11/09/2022] [Indexed: 12/23/2022] Open
Abstract
Background There is increasing research on the potential of inner ear proteins as serum biomarkers for the diagnosis and prognosis of various inner ear diseases. Among them, benign paroxysmal positional vertigo (BPPV) is the most common vestibular disease. Notably, otolin-1, an inner ear-specific protein, is detectable in the serum of most patients with BPPV patients. Therefore, we found a need to conduct this meta-analysis to determine the relationship between otolin-1 in serum and BPPV. Methods This meta-analysis was conducted by searching PubMed, EMBASE, Cochrane Library, Google Scholar, and China Network Knowledge Infrastructure databases for the eligible original studies in Chinese or English published between January 2010 and February 2022. Data were collected and pooled by using the mean differences (MDs) corresponding to 95% confidence intervals (CIs). Heterogeneity among these studies was assessed by using I2 statistics and the adopted fixed or random-effect mode thereafter. Egger's and Begg's tests were also used to assess the publication bias. Results This meta-analysis included six articles with a total of 585 participants. Serum otolin-1 levels were remarkably increased in patients with BPPV as compared to that in healthy controls (MD: 165.38, 95% CI: 110.13-220.64, p < 0.00001). However, Egger's and Begg's tests have indicated no publication bias, and the results were reliable based on the sensitivity analysis. Conclusion This meta-analysis indicated that there is a higher serum level of otolin-1 in patients with BPPV than in healthy controls. Therefore, otolin-1 may serve as a biomarker for the onset of BPPV.
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Parker A, Parham K, Skoe E. Age-related declines to serum prestin levels in humans. Hear Res 2022; 426:108640. [DOI: 10.1016/j.heares.2022.108640] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Revised: 10/10/2022] [Accepted: 10/19/2022] [Indexed: 11/04/2022]
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Avallone E, Schmitt H, Lilli G, Warnecke A, Lesinski-Schiedat A, Lenarz T, Willenborg K. A potential serological biomarker for inner ear pathologies: OTOLIN-1. ACTA OTORHINOLARYNGOLOGICA ITALICA : ORGANO UFFICIALE DELLA SOCIETA ITALIANA DI OTORINOLARINGOLOGIA E CHIRURGIA CERVICO-FACCIALE 2022; 42:364-371. [PMID: 36254652 PMCID: PMC9577683 DOI: 10.14639/0392-100x-n2074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Accepted: 08/01/2022] [Indexed: 11/06/2022]
Abstract
Objective The goal of the study was to determine whether the level of OTOLIN-1, a protein whose expression is highly restricted to the inner ear,is increased in the body fluids of patients with inner ear disorders in comparison to healthy subjects. Methods In the preliminary part of the study, OTOLIN-1 levels were measured in the serum, urine, and saliva of patients with an acute onset of Ménière´s disease and in healthy individuals. Subsequently, only serum OTOLIN-1 levels were taken into account and were compared between patients with acute onset of Ménière´s disease, sudden hearing loss, vestibular neuritis and healthy subjects. Results The most reliable diagnostic parameter was OTOLIN-1 levels in serum. Serum samples of patients with Ménière’s disease and sudden hearing loss showed significantly higher OTOLIN-1 levels than those from healthy individuals. In addition, there was no significant difference between the serum concentration of OTOLIN-1 in patients with vestibular neuritis and the control group. Conclusions Serum levels of OTOLIN-1 can potentially be used as a biomarker for acute onset of inner ear disorders due to its significant increase in patients with acute Meniere´s disease and sudden hearing loss in comparison to healthy individuals.
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Affiliation(s)
- Emilio Avallone
- Department of Otorhinolaryngology, Head and Neck Surgery, Hannover Medical School, Hannover, Germany,Correspondence Emilio Avallone Department of Otorhinolaryngology, Head and Neck Surgery, Hannover Medical School, Carl Neuberg-Str. 1, 30625 Hannover, Germany. Tel. +49 5115323032 E-mail:
| | - Heike Schmitt
- Department of Otorhinolaryngology, Head and Neck Surgery, Hannover Medical School, Hannover, Germany, Cluster of Excellence “Hearing4all” of the German Research Foundation, Hannover Medical School, Hannover, Germany
| | - Giorgio Lilli
- UOSD Audiologia, Fondazione IRCCS Ca’ Granda Ospedale Maggiore, Milan, Italy
| | - Athanasia Warnecke
- Department of Otorhinolaryngology, Head and Neck Surgery, Hannover Medical School, Hannover, Germany, Cluster of Excellence “Hearing4all” of the German Research Foundation, Hannover Medical School, Hannover, Germany
| | - Anke Lesinski-Schiedat
- Department of Otorhinolaryngology, Head and Neck Surgery, Hannover Medical School, Hannover, Germany
| | - Thomas Lenarz
- Department of Otorhinolaryngology, Head and Neck Surgery, Hannover Medical School, Hannover, Germany, Cluster of Excellence “Hearing4all” of the German Research Foundation, Hannover Medical School, Hannover, Germany
| | - Kerstin Willenborg
- Department of Otorhinolaryngology, Head and Neck Surgery, Hannover Medical School, Hannover, Germany
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Bielak K, Hołubowicz R, Zoglowek A, Żak A, Kędzierski P, Ożyhar A, Dobryszycki P. N'-terminal- and Ca 2+-induced stabilization of high-order oligomers of full-length Danio rerio and Homo sapiens otolin-1. Int J Biol Macromol 2022; 209:1032-1047. [PMID: 35447266 DOI: 10.1016/j.ijbiomac.2022.04.088] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Revised: 04/07/2022] [Accepted: 04/12/2022] [Indexed: 02/01/2023]
Abstract
Otolin-1 is a C1q family member and a major component of the organic matrix of fish otoliths and human otoconia. To date, the protein molecular properties have not been characterized. In this work, we describe biochemical characterization and comparative studies on saccular-specific otolin-1 derived from Danio rerio and Homo sapiens. Due to the low abundance of proteins in the otoconial matrix, we developed a production and purification method for both recombinant homologues of otolin-1. Danio rerio and Homo sapiens otolin-1 forms higher-order oligomers that can be partially disrupted under reducing conditions. The presence of Ca2+ stabilizes the oligomers and significantly increases the thermal stability of the proteins. Despite the high sequence coverage, the oligomerization of Danio rerio otolin-1 is more affected by the reducing conditions and presence of Ca2+ than the human homologue. The results show differences in molecular behaviour, which may be reflected in Danio rerio and Homo sapiens otolin-1 role in otolith and otoconia formation.
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Affiliation(s)
- Klaudia Bielak
- Department of Biochemistry, Molecular Biology and Biotechnology, Faculty of Chemistry, Wroclaw University of Science and Technology, Wroclaw, Poland
| | - Rafał Hołubowicz
- Department of Biochemistry, Molecular Biology and Biotechnology, Faculty of Chemistry, Wroclaw University of Science and Technology, Wroclaw, Poland
| | - Anna Zoglowek
- Department of Biochemistry, Molecular Biology and Biotechnology, Faculty of Chemistry, Wroclaw University of Science and Technology, Wroclaw, Poland
| | - Andrzej Żak
- Electron Microscopy Laboratory, Faculty of Mechanical Engineering, Wroclaw University of Science and Technology, Wroclaw, Poland
| | - Paweł Kędzierski
- Advanced Materials Engineering and Modelling Group, Faculty of Chemistry Wroclaw University of Science and Technology, Wroclaw, Poland
| | - Andrzej Ożyhar
- Department of Biochemistry, Molecular Biology and Biotechnology, Faculty of Chemistry, Wroclaw University of Science and Technology, Wroclaw, Poland
| | - Piotr Dobryszycki
- Department of Biochemistry, Molecular Biology and Biotechnology, Faculty of Chemistry, Wroclaw University of Science and Technology, Wroclaw, Poland.
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Fan Z, Hu Z, Han W, Lu X, Liu X, Zhou M, Yan W, Wu Y. High Serum Levels of Otolin-1 in Patients With Benign Paroxysmal Positional Vertigo Predict Recurrence. Front Neurol 2022; 13:841677. [PMID: 35359660 PMCID: PMC8963966 DOI: 10.3389/fneur.2022.841677] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Accepted: 01/27/2022] [Indexed: 11/17/2022] Open
Abstract
Background Otolin-1 is an inner ear-specific protein that is exclusively expressed in otoconia and vestibule and cochlea cells. Recent investigations reported that otolin-1 can cross the blood-labyrinthine barrier and that the levels in serum well-reflected otolith status. Serum otolin-1 levels in patients with benign paroxysmal positional vertigo (BPPV) are significantly elevated compared with healthy controls. We aimed to explore whether otolin-1 can also serve as a biomarker for predicting BPPV recurrence. Method Patients at our institution with new-onset of idiopathic BPPV between May, 2017 and May, 2018 were recruited and followed up for 2 years. All demographic data of the patients were collected, and serum levels of otolin-1 and other laboratory indicators were measured and compared according to the recurrence status. Results A total of 74 patients, who met the inclusion criteria were enrolled in this study, of which 27 (36.5%) patients had suffered one or more episodes of recurrence after undergoing canal repositioning treatments during the study. The serum levels of otolin-1 in patients with recurrent BPPV were significantly higher than those in patients without recurrent BPPV (363.9 vs. 309.8 pg/ml, p = 0.001). In multivariate analysis comparing the second to fourth quartiles (Q2–Q4) against the first quartile (Q1) of otolin-1, the level of otolin-1 in Q4 could significantly predict BPPV recurrence, and the odds ratio (OR) was elevated by approximately 812% (OR = 9.12; 95% confidence interval [CI]: 1.44–57.9; p = 0.019). Conclusion High serum levels of otolin-1 were associated with an increased risk of BPPV recurrence, and further investigation is required to confirm this association and clarify the exact mechanism.
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Affiliation(s)
- Zhenyi Fan
- Department of Neurology, Hwa Mei Hospital, University of Chinese Academy of Science, Ningbo, China.,Ningbo Institute of Life and Health Industry, University of Chinese Academy of Science, Ningbo, China
| | - Zhizhou Hu
- Department of Neurology, Longyan First Affiliated Hospital, Fujian Medical University, Longyan, China
| | - Weiwei Han
- Ningbo Institute of Life and Health Industry, University of Chinese Academy of Science, Ningbo, China.,Department of Rehabilitation, Hwa Mei Hospital, University of Chinese Academy of Science, Ningbo, China
| | - Xiaoxiong Lu
- Department of Neurology, Hwa Mei Hospital, University of Chinese Academy of Science, Ningbo, China.,Ningbo Institute of Life and Health Industry, University of Chinese Academy of Science, Ningbo, China
| | - Xiaoxia Liu
- Department of Neurology, Hwa Mei Hospital, University of Chinese Academy of Science, Ningbo, China.,Ningbo Institute of Life and Health Industry, University of Chinese Academy of Science, Ningbo, China
| | - Min Zhou
- Department of Neurology, Hwa Mei Hospital, University of Chinese Academy of Science, Ningbo, China.,Ningbo Institute of Life and Health Industry, University of Chinese Academy of Science, Ningbo, China
| | - Wang Yan
- Department of Neurology, Hwa Mei Hospital, University of Chinese Academy of Science, Ningbo, China.,Ningbo Institute of Life and Health Industry, University of Chinese Academy of Science, Ningbo, China
| | - Yunqin Wu
- Department of Neurology, Hwa Mei Hospital, University of Chinese Academy of Science, Ningbo, China.,Ningbo Institute of Life and Health Industry, University of Chinese Academy of Science, Ningbo, China
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Solis-Angeles S, Juárez-Pérez CA, Jiménez-Ramírez C, Cabello-López A, Aguilar-Madrid G, Del Razo LM. Prestin and otolin-1 proteins in the hearing loss of adults chronically exposed to lead. Toxicol Appl Pharmacol 2021; 426:115651. [PMID: 34273409 DOI: 10.1016/j.taap.2021.115651] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2021] [Revised: 07/09/2021] [Accepted: 07/12/2021] [Indexed: 12/09/2022]
Abstract
BACKGROUND Some studies in animal models and humans suggest that exposure to lead is associated with hearing loss. Lead can reach the inner ear through the blood circulation; evidence suggests that lead could accumulate in the inner ear, causing inner ear damage. AIM To evaluate prestin and otolin-1 protein levels and their relationship with an increased hearing threshold in participants exposed to lead. METHODS We conducted a cross-sectional study with 315 participants from Tlaxcala, Mexico. Blood lead levels (BPb) were evaluated by graphite furnace atomic absorption spectrometry. Serum prestin and otolin-1 were quantified using ELISA. Auditory function at frequencies of 0.125 to 8 kHz was evaluated in a soundproof chamber. RESULTS Participants were classified according to BPb: group I (<10 μg/dL) had a median BPb of 6 μg/dL and prestin levels of 11.06 ng/mL. While participants in group II (≥10 μg/dL) had a median of BPb 20.7 μg/dL (p < 0.05) and prestin levels of 0.15 ng/mL (p < 0.001). Participants in both groups showed a normal hearing. Otolin-1 levels were higher for participants with normal hearing and lower for participants with hearing loss in both groups, p > 0.05. Multiple linear regression models predict an average decrease of 0.17 to 0.26 ng/mL in prestin levels per decibel increase for the frequencies evaluated. CONCLUSIONS Participants with high BPb showed an increase in hearing threshold, and prestin levels decreased proportionally to the hearing threshold increase. This is the first study to evaluate prestin as a potential biomarker for hearing damage, evaluated by audiometry, in participants with lead exposure.
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Affiliation(s)
- Soledad Solis-Angeles
- Departamento de Toxicología, Centro de Investigación y Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV), Mexico City, Mexico
| | - Cuauhtémoc A Juárez-Pérez
- Unidad de Investigación de Salud en el Trabajo, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social (IMSS), Mexico City, Mexico
| | - Carmina Jiménez-Ramírez
- Laboratorio de Análisis Clínico, Unidad Médica de Alta Especialidad, Hospital de Traumatología "Dr. Victorio De la Fuente Narváez", IMSS, Mexico City, Mexico
| | - Alejandro Cabello-López
- Unidad de Investigación de Salud en el Trabajo, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social (IMSS), Mexico City, Mexico
| | - Guadalupe Aguilar-Madrid
- Departamento de Salud Pública, Facultad de Medicina, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Luz M Del Razo
- Departamento de Toxicología, Centro de Investigación y Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV), Mexico City, Mexico.
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Bi J, Liu B, Zhang Y, Zhou Q. Study on the Bone Metabolism Indices and Otoconin-90 in Benign Paroxysmal Positional Vertigo. Otol Neurotol 2021; 42:e744-e749. [PMID: 33606471 DOI: 10.1097/mao.0000000000003087] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
OBJECTIVE To investigate the correlation between benign paroxysmal positional vertigo (BPPV) and abnormal bone metabolism and to evaluate the value of otoconial protein otoconin-90 in the pathogenesis research and clinical treatment of BPPV. STUDY DESIGN Prospective pilot clinical trial (Level of Evidence: 2b). SETTING Outpatient otolaryngologic department. PATIENTS Twenty seven patients with a diagnosis of BPPV referred to the otolaryngologic department and 25 controls with no history of dizziness from 2018.4 to 2018.9 were reviewed. INTERVENTIONS No. MAIN OUTCOME MEASURES Dual-energy x-ray absorptiometry scanning (DEXA), bone mineral density (BMD) measurement, and assessment of serum levels of otoconin-90 and bone metabolism indices (osteocalcin, OC; 25-OH Vitamin D; total procollagen type 1 N-peptide, TP1NP; β-C-terminal telopeptide of type 1 collagen, β-CTX). RESULTS 1) The average serum level of otoconin-90 in the BPPV group was significantly higher than that in the control group (p < 0.05), whereas both the BMD T scores and serum 25-OH Vitamin D levels of the BPPV group were significantly lower than those of the control group (p < 0.05). 2) There was a strong positive correlation between serum otoconin-90 and age (r = 0.44, p < 0.05) and a moderate negative correlation between otoconin-90 and the bone metabolism indices OC (r = -0.33, p > 0.05), 25-OH Vitamin D (r = -0.35, p > 0.05), and TP1NP (r = -0.30, p > 0.05). 3) Logistic regression analysis showed that serum otoconin-90 level was an independent risk factor for BPPV (odd ratio = 0.998, 95% confidence interval 0.997-0.999, p < 0.01). CONCLUSION A correlation between BPPV and abnormal bone metabolism was found. Moreover, otoconin-90 could serve as a research tool for BPPV.
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Affiliation(s)
- Jingtao Bi
- Department of Otolaryngology, Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University.,Beijing Institute of Otolaryngology, Key Laboratory of Otolaryngology Head and Neck Surgery (Capital Medical University), Ministry of Education, Beijing, China
| | - Bo Liu
- Department of Otolaryngology, Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University.,Beijing Institute of Otolaryngology, Key Laboratory of Otolaryngology Head and Neck Surgery (Capital Medical University), Ministry of Education, Beijing, China
| | - Yi Zhang
- Department of Otolaryngology, Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University.,Beijing Institute of Otolaryngology, Key Laboratory of Otolaryngology Head and Neck Surgery (Capital Medical University), Ministry of Education, Beijing, China
| | - Qian Zhou
- Department of Otolaryngology, Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University.,Beijing Institute of Otolaryngology, Key Laboratory of Otolaryngology Head and Neck Surgery (Capital Medical University), Ministry of Education, Beijing, China
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Serum otolin-1 as a biomarker for benign paroxysmal positional vertigo: a case-control study. J Laryngol Otol 2021; 135:589-592. [PMID: 34137365 DOI: 10.1017/s0022215121001274] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
OBJECTIVES This study aimed to evaluate serum otolin-1 levels in patients with benign paroxysmal positional vertigo and to compare these levels with healthy individuals. METHOD This was a case-control study. After obtaining institutional ethical committee clearance, the serum level of otolin-1 was calculated in adult individuals (18-75 years old) who were divided into group 1 (patients presenting with benign paroxysmal positional vertigo) and group 2 (healthy patients without benign paroxysmal positional vertigo as the control group). Data analysis was carried out to compare the serum levels in the cases and controls. A p-value less than 0.05 was considered significant. RESULTS A total of 70 age-matched individuals (cases, n = 40; controls, n = 30) were included in the study. The mean serum level of otolin-1 was 636.8 pg/ml (range, 259-981 pg/ml) in the group of patients with benign paroxysmal positional vertigo and 236.2 pg/ml (range, 189-370 pg/ml) in the control group. The difference was statistically significant (p = 0.0000). CONCLUSION The serum levels of otolin-1 in patients with benign paroxysmal positional vertigo are significantly higher compared with individuals without benign paroxysmal positional vertigo.
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Reliability of Serological Prestin Levels in Humans and its Relation to Otoacoustic Emissions, a Functional Measure of Outer Hair Cells. Ear Hear 2021; 42:1151-1162. [PMID: 33859120 DOI: 10.1097/aud.0000000000001026] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
OBJECTIVES Serological biomarkers, common to many areas of medicine, have the potential to inform on the health of the human body and to give early warning of risk of compromised function or illness before symptoms are experienced. Serological measurement of prestin, a motor protein uniquely produced and expressed in outer hair cells, has recently been identified as a potential biomarker to inform on the health of the cochlea. Before any test can be introduced into the clinical toolkit, the reproducibility of the measurement when repeated in the same subject must be considered. The primary objective of this study is to outline the test-retest reliability estimates and normative ranges for serological prestin in healthy young adults with normal hearing. In addition, we examine the relation between serum prestin levels and otoacoustic emissions (OAEs) to compare this OHC-specific protein to the most common measure of OHC function currently used in hearing assessments. DESIGN We measured prestin levels serologically from circulating blood in 34 young adults (18 to 24 years old) with clinically normal pure-tone audiometric averages at five different timepoints up to six months apart (average intervals between measurements ranged from <1 week to 7 weeks apart). To guide future studies of clinical populations, we present the standard error of the measurement, reference normative values, and multiple measures of reliability. Additionally, we measured transient evoked OAEs at the same five timepoints and used correlation coefficients to examine the relation between OAEs and prestin levels (pg/mL). RESULTS Serum prestin levels demonstrated good to excellent reliability between and across the five different time points, with correlation coefficients and intraclass correlations >0.8. Across sessions, the average serum prestin level was 250.20 pg/mL, with a standard error of measurement of 7.28 pg/mL. Moreover, positive correlations (generally weak to moderate) were found between prestin levels and OAE magnitudes and signal-to-noise ratios. CONCLUSIONS Findings characterize serum prestin in healthy young adults with normal hearing and provide initial normative data that may be critical to interpreting results from individuals with sensorineural hearing loss. Our results demonstrate reliability of serum prestin levels in a sample of normal-hearing young adults across five test sessions up to 6 months apart, paving the way for testing larger samples to more accurately estimate test-retest standards for clinical protocols, including those involving serial monitoring. The positive correlations between serum prestin and OAE levels, although weak to moderate, reinforce that the source of serum prestin is likely the outer hair cells in the inner ear, but also that serum prestin and OAEs each may also index aspects of biologic function not common to the other.
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Bakhshaee M, Moradi S, Mohebi M, Ghayour-Mobarhan M, Sharifan P, Yousefi R, Rezaei A, Rajati M. Association Between Serum Vitamin D Level and Ménière's Disease. Otolaryngol Head Neck Surg 2021; 166:146-150. [PMID: 33755501 DOI: 10.1177/01945998211000395] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
OBJECTIVES Ménière's disease (MD) is a well-known inner ear disease; however, the etiopathogenesis is unknown. Several factors may be involved. Meanwhile, vitamin D is reported to have an important role in inner ear physiology. The aim of this study is to evaluate the relation between vitamin D deficiency and MD. STUDY DESIGN This matched case-control study compared serum vitamin D levels between patients with definite MD and those without it. SETTING The study was done between August 2018 and December 2019 at Ghaem University Hospital in Mashhad, Iran. METHODS Twenty-eight patients with definite MD were matched with a group of 84 healthy individuals, regarding age, sex, body mass index, and occupation (indoor vs outdoor). The serum level of vitamin D (25-hydroxyvitamin D3) was measured in both groups. RESULTS The mean ± SD vitamin D level was 18.9 ± 9.7 ng/mL in the case group and 25.2 ± 13.7 ng/mL in the control group (P = .027). There was a significant difference between the case and control groups according to the results of the conditional logistic regression model (P = .03; adjusted odds ratio, 0.96). In the MD group, 17 (60.7%) patients were vitamin D deficient, 6 (21.4%) insufficient, and only 5 (17.9%) sufficient. CONCLUSIONS The results of this study show that serum vitamin D level in MD is significantly lower than that of the control group. However, the role of vitamin D supplementation in the management of MD needs further study. LEVEL OF EVIDENCE 4.
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Affiliation(s)
- Mehdi Bakhshaee
- Sinus and Surgical Endoscopic Research Center, Department of Otorhinolaryngology, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Susan Moradi
- School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Masoud Mohebi
- Metabolic Syndrome Research Center School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Majid Ghayour-Mobarhan
- Iranian UNESCO Centre of Excellence for Human Nutrition, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Payam Sharifan
- Department of Nutrition, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Razieh Yousefi
- Student Research Committee, Mashhad University of Medical Sciences, Mashhad, Iran.,Department of Epidemiology and Biostatistics, School of Health, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Alireza Rezaei
- Islamic Azad University of Medical Sciences, Mashhad, Iran
| | - Mohsen Rajati
- Ghaem University Hospital, Sinus and Surgical Endoscopic Research Center, Department of Otorhinolaryngology, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
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Yadav H, Irugu D, Ramakrishanan L, Singh A, Abraham R, Sikka K, Thakar A, Verma H. An evaluation of serum Otolin-1 & Vitamin-D in benign paroxysmal positional vertigo. J Vestib Res 2021; 31:433-440. [PMID: 33720865 DOI: 10.3233/ves-201601] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
BACKGROUND Serum otolin-1 is an inner ear protein exclusively expressed in otoconia and cells of vestibule and cochlea. Serum otolin-1 is found to be quantifiable in patients with BPPV. Low Vitamin-D is associated with pathogenesis of BPPV. Since otoconia degeneration contributes to BPPV, lack of Vitamin-D may impact otoconia structure and integrity. OBJECTIVE We aimed at studying the s.otolin-1 as biomarker and significance of vit-D in BPPV. MATERIAL AND METHOD 23 patients in test and control groups respectively were chosen within the age of 20 to 65 years. All the patients were diagnosed using Dix Hallpike menouver and head roll test, patients were treated with appropriate Canal Reposition Menouver (CRM). RESULTS Serum Otolin-1 levels among the test ranged from 366 to 882 pg/mL with mean of 585.17 pg/mL whereas in control group ranged from 223 to 462 pg/mL with mean of 335.26 pg/mL. Mean Vitamin-D levels among the test group was 22.67 ng/mL (Range = 6.3-68.4) and that of control 15.43 pg/mL (Range = 5.4-27.7) respectively. The relationship between the serum Otolin-1 and Vitamin-D was not statistically significant. CONCLUSION Otolin-1 levels is increased in BPPV patients and is sensitive in BPPV, specificity needs to be validated. Role of vitamin-D with respect to inner ear proteins needs further investigation.
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Affiliation(s)
- Harsha Yadav
- Junior Resident, Department of Otorhinolaryngology-Head & Neck surgery, AIIMS, New Delhi, India
| | - Dvk Irugu
- Associate Professor, Department of Otorhinolaryngology-Head & Neck surgery, AIIMS, New Delhi, India
| | | | - Archana Singh
- Associate Professor, Department of Biochemistry, AIIMS, New Delhi, India
| | - Ransi Abraham
- Senior Research Officer, Department of Cardiac Biochemistry, AIIMS, New Delhi, India
| | - Kapil Sikka
- Additional Professor, Department of Otorhinolaryngology-Head & Neck surgery, AIIMS, New Delhi, India
| | - Alok Thakar
- Professor & Head, Department of Otorhinolaryngology-Head & Neck surgery, AIIMS, New Delhi, India
| | - Hitesh Verma
- Associate Professor, Department of Otorhinolaryngology-Head & Neck surgery, AIIMS, New Delhi, India
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Mahshid SS, Dabdoub A. Development of a novel electrochemical immuno-biosensor for circulating biomarkers of the inner ear. Biosens Bioelectron 2020; 165:112369. [PMID: 32729501 DOI: 10.1016/j.bios.2020.112369] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Revised: 06/03/2020] [Accepted: 06/05/2020] [Indexed: 12/23/2022]
Abstract
Current approaches for diagnosis of hearing or vestibular disorders are mostly based on physical examinations that cannot provide information about the exact location of cellular damage inside the inner ear. Therefore, there is a need for new diagnostic methods capable of identifying the sites of damage through the detection of inner ear blood-circulating biomarkers. Here, we developed the first biosensor platform for rapid detection of otolin-1 and prestin, blood-circulating proteins specifically expressed in the vestibule and cochlea, respectively. The platform was designed on a DNA-based immunoassay that employed conjugated antibodies for target protein recognition, which when bound, altered the DNA-DNA hybridization on the surface, resulting in generation of a concentration-dependent signal. The signal was recorded when the redox moiety brought to the surface by the target enabled a selective electrochemical output directly in whole blood. Signal amplification was acquired by employing high-curvature nanostructured electrodes for sensitive sample analysis at picomolar concentrations with a three-fold quantitative range. The combination of nanostructuring and optimum density of the probes on the surface provided low-picomolar detection limits while utilizing small 10 μL sample volume with a 10-min response time. The proposed immuno-biosensor is highly selective and quantitative and can easily be adapted for rapid detection of any blood-circulating protein using their specific antibodies as recognition elements.
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Affiliation(s)
- Sahar S Mahshid
- Sunnybrook Research Institute, Toronto, ON, M4N 3M5, Canada.
| | - Alain Dabdoub
- Sunnybrook Research Institute, Toronto, ON, M4N 3M5, Canada; Department of Otolaryngology-Head & Neck Surgery, University of Toronto, Toronto, ON, M5S 3H2, Canada; Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, M5S 1A1, Canada.
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15
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McKenna K, Rahman K, Parham K. Otoconia degeneration as a consequence of primary hyperparathyroidism. Med Hypotheses 2020; 144:109982. [PMID: 32531542 DOI: 10.1016/j.mehy.2020.109982] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Revised: 06/01/2020] [Accepted: 06/05/2020] [Indexed: 11/29/2022]
Abstract
Primary hyperparathyroidism (PHPT) is a common endocrine condition which disrupts physiologic calcium regulation. PHPT causes persistent hypercalcemia via the elevated and constant secretion of parathyroid hormone. Due to the effects of parathyroid hormone on target organs such as the bones, kidneys and gastrointestinal tract, untreated PHPT can lead to complications such as decreased bone mineral density, nephrolithiasis, and chronic abdominal pain, respectively. Given PHPT's drastic effect on calcium metabolism, it is likely that the condition also affects other organ systems, such as the inner ear, which rely on calcium for normal structure and function. Specifically, the saccule and utricle have otoconia made of calcium carbonate deposited on a protein framework. We hypothesize that PHPT, the epitome calcium disorder, can cause otoconia degeneration, one manifestation of which is benign paroxysmal positional vertigo (BPPV). As a preliminarily test of this hypothesis, we measured the levels of otolin-1, an inner ear glycoprotein found in the otoconia protein framework and a proposed biomarker for otoconia degeneration in patients with PHPT. We found a positive linear relationship between PTH (parathyroid hormone) and otolin-1 levels (R2 = 0.53) and total calcium and PTH levels (R2 = 0.32). These findings suggest that both PTH and total calcium levels affect otolin-1 levels, implying that the calcium dysregulation caused by PHPT may contribute to the otoconia breakdown and may be associated with inner ear disorders such as BPPV.
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Affiliation(s)
- Kelly McKenna
- School of Medicine, University of Connecticut, 263 Farmington Avenue, Farmington, CT 06030, USA
| | - Khalil Rahman
- School of Medicine, University of Connecticut, 263 Farmington Avenue, Farmington, CT 06030, USA
| | - Kourosh Parham
- Department of Surgery, Division of Otolaryngology, Head and Neck Surgery, University of Connecticut Health, 263 Farmington Avenue, Farmington, CT 06030, USA.
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D’Elia A, Quaranta N, Asprella Libonati G, Ralli G, Morelli A, Inchingolo F, Cialdella F, Martellucci S, Barbara F. The cochleo-vestibular secretory senescence. JOURNAL OF GERONTOLOGY AND GERIATRICS 2020. [DOI: 10.36150/2499-6564-485] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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17
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Wu Y, Han W, Yan W, Lu X, Zhou M, Li L, Guan Q, Fan Z. Increased Otolin-1 in Serum as a Potential Biomarker for Idiopathic Benign Paroxysmal Positional Vertigo Episodes. Front Neurol 2020; 11:367. [PMID: 32477244 PMCID: PMC7237635 DOI: 10.3389/fneur.2020.00367] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Accepted: 04/14/2020] [Indexed: 12/11/2022] Open
Abstract
Objective: Otolin-1, a main specific otoconia matrix protein, passes through the labyrinth-blood barrier and is detectable in peripheral blood. Serum otolin-1 levels differ between patients with benign paroxysmal positional vertigo (BPPV) and healthy controls and are significantly age-related, increasing in healthy controls with age, suggesting that serum otolin-1 levels reflect otolith status. The aim of this study was to determine whether otolin-1 levels change during vertigo episodes in patients with BPPV and whether any change is specific and sensitive enough for BPPV episodes. Method: Patients diagnosed with de novo idiopathic BPPV during an acute episode were included in the study from May 2017 to May 2018. Blood samples were drawn before patients were treated with canalith-repositioning maneuvers. Serum otolin-1 levels were compared between 78 patients and 121 age- and sex-matched healthy individuals. Results: There were no significant differences between the groups in the age distribution, sex ratio, body mass index, clinical history, routine blood parameters, or total protein, albumin, uric acid, creatinine, blood urea nitrogen and lipid profiles (P > 0.05). Serum levels of otolin-1 were significantly higher in BPPV patients than in healthy controls (P < 0.001). Receiver operating characteristic analysis revealed that a serum otolin-1 value of 299.45 pg/ml was the optimal cut-off value to discriminate patients with BPPV from healthy controls (area under the curve 0.757, 95% CI 0.687~0.826) with a sensitivity of 67.9% and a specificity of 72.7%. Conclusion: Serum levels of otolin-1 may be a potential biomarker for BPPV episodes.
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Affiliation(s)
- Yunqin Wu
- Department of Neurology, Hwa Mei Hospital, University of Chinese Academy of Science, Ningbo, China.,Ningbo Institute of Life and Health Industry, University of Chinese Academy of Science, Ningbo, China
| | - Weiwei Han
- Department of Neurology, Hwa Mei Hospital, University of Chinese Academy of Science, Ningbo, China.,Ningbo Institute of Life and Health Industry, University of Chinese Academy of Science, Ningbo, China.,Department of Rehabilitation, Hwa Mei Hospital, University of Chinese Academy of Science, Ningbo, China
| | - Wang Yan
- Department of Neurology, Hwa Mei Hospital, University of Chinese Academy of Science, Ningbo, China.,Ningbo Institute of Life and Health Industry, University of Chinese Academy of Science, Ningbo, China
| | - Xiaoxiong Lu
- Department of Neurology, Hwa Mei Hospital, University of Chinese Academy of Science, Ningbo, China.,Ningbo Institute of Life and Health Industry, University of Chinese Academy of Science, Ningbo, China
| | - Min Zhou
- Department of Neurology, Hwa Mei Hospital, University of Chinese Academy of Science, Ningbo, China.,Ningbo Institute of Life and Health Industry, University of Chinese Academy of Science, Ningbo, China
| | - Li Li
- Department of Neurology, Hwa Mei Hospital, University of Chinese Academy of Science, Ningbo, China.,Ningbo Institute of Life and Health Industry, University of Chinese Academy of Science, Ningbo, China
| | - Qiongfeng Guan
- Department of Neurology, Hwa Mei Hospital, University of Chinese Academy of Science, Ningbo, China.,Ningbo Institute of Life and Health Industry, University of Chinese Academy of Science, Ningbo, China
| | - Zhenyi Fan
- Department of Neurology, Hwa Mei Hospital, University of Chinese Academy of Science, Ningbo, China.,Ningbo Institute of Life and Health Industry, University of Chinese Academy of Science, Ningbo, China
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18
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Doğan M, Şahin M, Kurtulmuş Y. Otolin-1, as a Potential Marker for Inner Ear Trauma after Mastoidectomy. J Int Adv Otol 2020; 15:200-203. [PMID: 31120422 DOI: 10.5152/iao.2019.5155] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
OBJECTIVES The aim of this prospective clinical study was to examine the negative effect of drilling by measuring peripheral Otolin-1 levels as a potential biomarker. MATERIALS AND METHODS Patients who underwent mastoidectomy due to chronic otitis media were included in the study. Otolin-1 levels were measured preoperatively and 6 h postoperatively, and total drilling time was noted. Preoperative serum Otolin-1 levels in 31 patients were compared with those in31 age- and sex-matched healthy individuals. Pre- and postoperative serum Otolin-1 levels were also compared. RESULTS Tympanoplasty was performed through canal wall-down (n=17) and wall-up mastoidectomy (n=14) in our sample. The mean duration of drilling was 52.7±13.8min. Preoperative serum Otolin-1 levels were significantly lower in patients than in healthy controls (21.0±3.0 vs. 23.5±3.9 pg/mL, p=0.006). We also found significantly higher postoperative serum Otolin-1 levels than preoperative levels (21.0±3.0 vs. 27.0±6.9 pg/mL, p<0.001). An increase in serum Otolin-1 levels during surgery was independently associated with drilling time in multivariate linear regression analysis (r=0.309, p<0.001). CONCLUSION A nearly postoperative increase in serum Otolin-1 levels after mastoidectomy was independently associated with drilling time. We show that serum Otolin-1 levels may be used to indicate inner ear trauma in clinical practice in the future.
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Affiliation(s)
- Murat Doğan
- Department of ENT, Adnan Menderes University School of Medicine, Aydın, Turkey
| | - Mustafa Şahin
- Department of ENT, Adnan Menderes University School of Medicine, Aydın, Turkey
| | - Yusuf Kurtulmuş
- Department of Biochemistry, Adnan Menderes University School of Medicine, Aydın, Turkey
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Abstract
OBJECTIVE Low vitamin D levels have been associated with and could play a role in the pathogenesis of idiopathic benign paroxysmal positional vertigo (iBPPV). Since otoconia degeneration contributes to iBPPV and a lack of vitamin D may impact otoconia structure and integrity, we proposed a negative association between vitamin D levels and levels of a proposed circulatory biomarker for otolithic degeneration, otolin-1. STUDY DESIGN Cross-sectional clinical study. SETTING Clinical research center. PATIENTS Seventy-nine men and women ranging in age from 22 to 95 years old without known vertigo. INTERVENTIONS Diagnostic. MAIN OUTCOME MEASURES Blood levels of 25-OH vitamin D and otolin-1. RESULTS Previously, we had reported higher otolin-1 levels in older age groups. The majority of the subjects (83%) had vitamin D levels that were below 40 ng/ml. Vitamin D level was lowest in the young and increased with age before declining in subjects 70 years of age and older (p = 0.005). There was a negative correlation between vitamin D and otolin-1 levels of subjects over 70 (r = -0.36, p = 0.036). CONCLUSION Our results demonstrate a relationship between vitamin D and otolin-1. The majority of our subjects had abnormally low vitamin D levels, but only those over 70 years of age showed a negative correlation with high otolin-1 levels. We postulate that a seasonal drop in vitamin D may not be sufficient for otoconia fragmentation and ultimately iBPPV, rather, chronically low vitamin D maybe required to induce otoconia degeneration.
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Abstract
The world's population is ageing due to increased hygiene and improved medical care. Dizziness and imbalance frequently affect the elderly and is most common among individuals over the age of 60. In this age group approximately 30% of the population experience these debilitating symptoms at some point. They contribute to falls and frailty, which often result in hospitalization causing tremendous cost for the health care systems, and increased mortality. To make the matters worse balance disorders are often complex. Physicians face the difficulty of diagnosing the patient with the exact disorder especially since each disorder may manifest differently in each patient. In addition, several treatment options exist, however, with a low level of evidence. This chapter summarizes the underlying degenerative processes of the peripheral as well as the central vestibular system, diagnostic tools, the most common balance disorders in the elderly, and possible treatment options of these disorders.
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Wu Y, Fan Z, Jin H, Guan Q, Zhou M, Lu X, Li L, Yan W, Gu C, Chen C, Han W. Assessment of Bone Metabolism in Male Patients With Benign Paroxysmal Positional Vertigo. Front Neurol 2018; 9:742. [PMID: 30233488 PMCID: PMC6135048 DOI: 10.3389/fneur.2018.00742] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2018] [Accepted: 08/16/2018] [Indexed: 11/13/2022] Open
Abstract
Objective: Several studies have suggested a probable association between benign paroxysmal positional vertigo (BPPV) and both reduction of bone mineral density (BMD) and serum vitamin D levels, but none of these studies have explored their findings by examining bone turnover markers (BTM) in male idiopathic BPPV patients. This study aimed to evaluate the relationship between BMD and serum 25-hydroxyvitamin D (25(OH) D), with the occurrence of BPPV along with the characteristics of bone metabolism in male idiopathic BPPV patients. Methods: This retrospective study comprised 60 male idiopathic BPPV patients and 92 age-matched healthy controls referred to Ningbo No.2 Hospital during the period of February 2016 to February 2018. All subjects' serum levels of 25(OH) D, bone formation marker amino-terminal propeptide of type I procollagen (PINP), and bone resorption marker β-isomerized carboxy-terminal telopeptide of type I collagen (β-CTX) were measured. BMD was determined by dual energy X-ray absorption at the lumbar spine and hip. Results: Among male patients with BPPV, the prevalence of BMD reduction was 35.0%, which was similar to that of 27.2% in healthy controls. There were significant differences in the mean serum 25(OH) D level and prevalence of vitamin D deficiency between the two groups, with p-values of 0.049 and 0.009, respectively. The bone turnover markers of PINP and β-CTX in BPPV patients were lower than those in healthy controls. Logistic regression showed that vitamin D deficiency were associated with BPPV with an odds ratio of 3.8 (95% confidence interval = 1.25-11.73). Conclusion: Our study found that decreased serum vitamin D may be a risk factor for BPPV in male patients. The level of bone turnover among male patients with BPPV was lower than that among healthy controls.
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Affiliation(s)
- Yunqin Wu
- Department of Neurology, Ningbo No. 2 Hospital, Ningbo, China
| | - Zhenyi Fan
- Department of Neurology, Ningbo No. 2 Hospital, Ningbo, China
| | - Hang Jin
- Department of Neurology, First Hospital of Jilin University, Changchun, China
| | - Qiongfeng Guan
- Department of Neurology, Ningbo No. 2 Hospital, Ningbo, China
| | - Min Zhou
- Department of Neurology, Ningbo No. 2 Hospital, Ningbo, China
| | - Xiaoxiong Lu
- Department of Neurology, Ningbo No. 2 Hospital, Ningbo, China
| | - Li Li
- Department of Neurology, Ningbo No. 2 Hospital, Ningbo, China
| | - Wang Yan
- Department of Neurology, Ningbo No. 2 Hospital, Ningbo, China
| | - Chengyao Gu
- Department of Neurology, Ningbo No. 2 Hospital, Ningbo, China
| | - Caijing Chen
- Department of Neurology, Ningbo No. 2 Hospital, Ningbo, China
| | - Weiwei Han
- Department of Neurology, Ningbo No. 2 Hospital, Ningbo, China.,Department of Rehabilitation, Ningbo No. 2 Hospital, Ningbo, China
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Büki B, Jünger H, Lundberg YW. Vitamin D supplementation may improve symptoms in Meniere's disease. Med Hypotheses 2018; 116:44-46. [PMID: 29857909 DOI: 10.1016/j.mehy.2018.04.019] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Revised: 04/18/2018] [Accepted: 04/23/2018] [Indexed: 01/09/2023]
Abstract
In the last 4 years the authors observed a trend that correcting vitamin D deficiency in newly diagnosed cases of Meniere's disease decreased the necessity of the ablative therapy with intratympanic gentamicin. According to their hypothesis, vitamin D supplementation may indeed have a beneficial effect in Meniere's disease if the symptoms are caused by a local postviral autoimmune reaction. Vitamin D has a strong immunomodulatory role, one of which is the regulation of the expression of pro-inflammatory mediators. The authors suggest further epidemiological studies to decide if there is a connection between vitamin D deficiency and Meniere's disease.
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Affiliation(s)
- Bela Büki
- Department of Otolaryngology, Karl Landsteiner University Hospital Krems, Austria.
| | - Heinz Jünger
- Department of Otolaryngology, Karl Landsteiner University Hospital Krems, Austria
| | - Yunxia Wang Lundberg
- Vestibular Neurogenetics Laboratory, Boys Town National Research Hospital, Omaha, Nebraska, USA
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