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Lim KH, Lee SH, Song I, Yoon HS, Kim HJ, Lee YH, Kim E, Rah YC, Choi J. Analysis of the association between vestibular schwannoma and hearing status using a newly developed radiomics technique. Eur Arch Otorhinolaryngol 2024; 281:2951-2957. [PMID: 38183454 DOI: 10.1007/s00405-023-08410-1] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2023] [Accepted: 12/09/2023] [Indexed: 01/08/2024]
Abstract
PURPOSE Vestibular schwannoma is a benign tumor originating from Schwann cells surrounding the eighth cranial nerve and can cause hearing loss, tinnitus, balance problems, and facial nerve disorders. Because of the slow growth of the tumor, predicting the hearing function of patients with vestibular schwannoma's is important to obtain information that would be useful for deciding the treatment modality. This study aimed to analyze the association between magnetic resonance imaging features and hearing status using a new radiomics technique. METHODS We retrospectively analyzed 115 magnetic resonance images and hearing results from 73 patients with vestibular schwannoma. A total of 70 radiomics features from each tumor volume were calculated using T1-weighted magnetic resonance imaging. Radiomics features were classified as histogram-based, shape-based, texture-based, and filter-based. The least absolute shrinkage and selection operator method was used to select the radiomics features among the 70 features that best predicted the hearing test. To ensure the stability of the selected features, the least absolute shrinkage and selection operator method was repeated 10 times. Finally, features set five or more times were selected as radiomics signatures. RESULTS The radiomics signatures selected using the least absolute shrinkage and selection operator method were: minimum, variance, maximum 3D diameter, size zone variance, log skewness, skewness slope, and kurtosis slope. In random forest, the mean performance was 0.66 (0.63-0.77), and the most important feature was Log skewness. CONCLUSIONS Newly developed radiomics features are associated with hearing status in patients with vestibular schwannoma and could provide information when deciding the treatment modality.
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Affiliation(s)
- Kang Hyeon Lim
- Department of Otorhinolaryngology-Head and Neck Surgery, College of Medicine, Korea University Ansan Hospital, Korea University, 123, Jeokgeum-ro, Danwon-gu, Ansan-Si, Gyeonggi-do, 15355, Republic of Korea
| | - Seung-Hak Lee
- Core Research & Development Center, Korea University, Ansan Hospital, Ansan, Republic of Korea
| | - Insik Song
- Department of Otorhinolaryngology-Head and Neck Surgery, College of Medicine, Korea University Ansan Hospital, Korea University, 123, Jeokgeum-ro, Danwon-gu, Ansan-Si, Gyeonggi-do, 15355, Republic of Korea
| | - Hee Soo Yoon
- Department of Otorhinolaryngology-Head and Neck Surgery, College of Medicine, Korea University Ansan Hospital, Korea University, 123, Jeokgeum-ro, Danwon-gu, Ansan-Si, Gyeonggi-do, 15355, Republic of Korea
| | - Hong Jin Kim
- Department of Otorhinolaryngology-Head and Neck Surgery, College of Medicine, Korea University Ansan Hospital, Korea University, 123, Jeokgeum-ro, Danwon-gu, Ansan-Si, Gyeonggi-do, 15355, Republic of Korea
| | - Ye Hwan Lee
- Department of Otorhinolaryngology-Head and Neck Surgery, College of Medicine, Korea University Ansan Hospital, Korea University, 123, Jeokgeum-ro, Danwon-gu, Ansan-Si, Gyeonggi-do, 15355, Republic of Korea
| | - Eunjin Kim
- Department of Otorhinolaryngology-Head and Neck Surgery, College of Medicine, Korea University Ansan Hospital, Korea University, 123, Jeokgeum-ro, Danwon-gu, Ansan-Si, Gyeonggi-do, 15355, Republic of Korea
| | - Yoon Chan Rah
- Department of Otorhinolaryngology-Head and Neck Surgery, College of Medicine, Korea University Ansan Hospital, Korea University, 123, Jeokgeum-ro, Danwon-gu, Ansan-Si, Gyeonggi-do, 15355, Republic of Korea
| | - June Choi
- Department of Otorhinolaryngology-Head and Neck Surgery, College of Medicine, Korea University Ansan Hospital, Korea University, 123, Jeokgeum-ro, Danwon-gu, Ansan-Si, Gyeonggi-do, 15355, Republic of Korea.
- Department of Medical Informatics, Korea University College of Medicine, Seoul, Republic of Korea.
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Lim KH, Kim HK, Park S, Han E, Song I, Yoon HS, Kim J, Lee Y, Jang YH, Rah YC, Lee SH, Choi J. Measuring Optokinetic Reflex and Vestibulo-Ocular Reflex in Unilateral Vestibular Organ Damage Model of Zebrafish. J Assoc Res Otolaryngol 2024; 25:167-177. [PMID: 38361011 PMCID: PMC11018730 DOI: 10.1007/s10162-024-00936-3] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Accepted: 01/31/2024] [Indexed: 02/17/2024] Open
Abstract
One-sided vestibular disorders are common in clinical practice; however, their models have not been fully established. We investigated the effect of unilateral or bilateral deficits in the vestibular organs on the vestibulo-ocular reflex (VOR) and optokinetic reflex (OKR) of zebrafish using in-house equipment. For physical dislodgement of the otoliths in the utricles of zebrafish larvae, one or both utricles were separated from the surrounding tissue using glass capillaries. The video data from VOR and OKR tests with the larvae was collected and processed using digital signal processing techniques such as fast Fourier transform and low-pass filters. The results showed that unilateral and bilateral damage to the vestibular system significantly reduced VOR and OKR. In contrast, no significant difference was observed between unilateral and bilateral damage. This study confirmed that VOR and OKR were significantly reduced in zebrafish with unilateral and bilateral vestibular damage. Follow-up studies on unilateral vestibular disorders can be conducted using this tool.
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Affiliation(s)
- Kang Hyeon Lim
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Korea University Ansan Hospital, Ansan, Republic of Korea
| | - Hong Ki Kim
- Department of Electrical Engineering, Korea University College of Engineering, Korea University, Seoul, Republic of Korea
| | - Saemi Park
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Korea University Ansan Hospital, Ansan, Republic of Korea
| | - Eunjung Han
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Korea University Ansan Hospital, Ansan, Republic of Korea
| | - Insik Song
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Korea University Ansan Hospital, Ansan, Republic of Korea
| | - Hee Soo Yoon
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Korea University Ansan Hospital, Ansan, Republic of Korea
| | - Jaeyoung Kim
- Core Research & Development Center, Korea University Ansan Hospital, Ansan, Republic of Korea
| | - Yunkyoung Lee
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Korea University Ansan Hospital, Ansan, Republic of Korea
- Zebrafish Translational Medical Research Center, Korea University, Ansan, Republic of Korea
| | - Yong Hun Jang
- Department of Electrical Engineering, Korea University College of Engineering, Korea University, Seoul, Republic of Korea
| | - Yoon Chan Rah
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Korea University Ansan Hospital, Ansan, Republic of Korea
| | - Sang Hyun Lee
- Department of Electrical Engineering, Korea University College of Engineering, Korea University, Seoul, Republic of Korea.
| | - June Choi
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Korea University Ansan Hospital, Ansan, Republic of Korea.
- Zebrafish Translational Medical Research Center, Korea University, Ansan, Republic of Korea.
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Choo OS, Kim H, Lee SJ, Kim SY, Lee KY, Lee HY, Moon IS, Seo JH, Rah YC, Song JJ, Nam EC, Park SN, Song JJ, Shim HJ. Consensus Statements on the Definition, Classification, and Diagnostic Tests for Tinnitus: A Delphi Study Conducted by the Korean Tinnitus Study Group. J Korean Med Sci 2024; 39:e49. [PMID: 38317449 PMCID: PMC10843967 DOI: 10.3346/jkms.2024.39.e49] [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] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Accepted: 12/06/2023] [Indexed: 02/07/2024] Open
Abstract
BACKGROUND Tinnitus is a bothersome condition associated with various symptoms. However, the mechanisms of tinnitus are still uncertain, and a standardized assessment of the diagnostic criteria for tinnitus is required. We aimed to reach a consensus on diagnosing tinnitus with professional experts by conducting a Delphi study with systematic review of the literature. METHODS Twenty-six experts in managing tinnitus in Korea were recruited, and a two-round modified Delphi study was performed online. The experts evaluated the level of agreement of potential criteria for tinnitus using a scale of 1-9. After the survey, a consensus meeting was held to establish agreement on the results obtained from the Delphi process. Consensus was defined when over 70% of the participants scored 7-9 (agreement) and fewer than 15% scored 1-3 (disagreement). To analyze the responses of the Delphi survey, the content validity ratio and Kendall's coefficient of concordance were evaluated. RESULTS Consensus was reached for 22 of the 38 statements. For the definition of tinnitus, 10 out of 17 statements reached consensus, with three statements achieving complete agreement including; 1) Tinnitus is a conscious perception of an auditory sensation in the absence of a corresponding external stimulus, 2) Tinnitus can affect one's quality of life, and 3) Tinnitus can be associated with hearing disorders including sensorineural hearing loss, vestibular schwannoma, Meniere's disease, otosclerosis, and others. For the classification of tinnitus, 11 out of 18 statements reached consensus. The participants highly agreed with statements such as; 1) Vascular origin is expected in pulse-synchronous tinnitus, and 2) Tinnitus can be divided into acute or chronic tinnitus. Among three statements on the diagnostic tests for tinnitus only Statement 3, "There are no reliable biomarkers for sensory or emotional factors of tinnitus." reached consensus. All participants agreed to perform pure-tone audiometry and tinnitus questionnaires, including the Tinnitus Handicap Inventory and Tinnitus Questionnaire. CONCLUSION We used a modified Delphi method to establish a consensus-based definition, a classification, and diagnostic tests for tinnitus. The expert panel reached agreement for several statements, with a high level of consensus. This may provide practical information for clinicians in managing tinnitus.
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Affiliation(s)
- Oak-Sung Choo
- Department of Otorhinolaryngology-Head and Neck Surgery, Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea
| | - Hantai Kim
- Department of Otorhinolaryngology-Head and Neck Surgery, Konyang University College of Medicine, Daejeon, Korea
| | - Seung Jae Lee
- Department of Otorhinolaryngology, Ilsan Paik Hospital, Inje University College of Medicine, Goyang, Korea
| | - So Young Kim
- Department of Otorhinolaryngology-Head & Neck Surgery, CHA Bundang Medical Center, CHA University, Seongnam, Korea
| | - Kyu-Yup Lee
- Department of Otorhinolaryngology-Head and Neck Surgery, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Ho Yun Lee
- Department of Otolaryngology-Head and Neck Surgery, College of Medicine, Ewha Womans University, Seoul, Korea
| | - In Seok Moon
- Department of Otorhinolaryngology, Yonsei University College of Medicine, Seoul, Korea
| | - Jae-Hyun Seo
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Yoon Chan Rah
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University Ansan Hospital, Korea University College of Medicine, Ansan, Korea
| | - Jae-Jun Song
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University Guro Hospital, Seoul, Korea
| | - Eui-Cheol Nam
- Department of Otorhinolaryngology, Kangwon National University College of Medicine, Chuncheon, Korea
| | - Shi Nae Park
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Jae-Jin Song
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Korea
- Sensory Organ Research Institute, Seoul National University Medical Research Center, Seoul, Korea.
| | - Hyun Joon Shim
- Department of Otorhinolaryngology-Head and Neck Surgery, Nowon Eulji Medical Center, Eulji University School of Medicine, Seoul, Korea.
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Yoon HS, Hyun KT, Hong S, Park S, Han E, Baek HW, Lee YK, Lim KH, Rah YC, Choi J. Exploring Embryo-Ototoxic Effects: Insights into Deodorant-Induced Hair Cell Damage in Zebrafish. Int J Mol Sci 2024; 25:948. [PMID: 38256022 PMCID: PMC10815967 DOI: 10.3390/ijms25020948] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Revised: 01/06/2024] [Accepted: 01/10/2024] [Indexed: 01/24/2024] Open
Abstract
Our study investigated the embryo-ototoxic effects of deodorant2 (DA2) on zebrafish embryos, which serve as valuable model organisms due to genetic and physiological similarities to humans. We focused on understanding DA2's impact on zebrafish hair cells, which are vital for sensory perception and balance regulation. DA2, provided by the Ministry of Environment, Republic of Korea, was used at 460 μg/mL in dimethyl sulfoxide (DMSO), with a 0.43% DMSO solvent control group. Three experiments, each using 10 zebrafish specimens from each group, showed an initial 13% hair cell count reduction in the DA2-exposed group. Subsequent experiments demonstrated reductions of 37% and 22%, each with one mortality case. Statistical analysis revealed a significant 24% hair cell count reduction in the DA2-exposed group. We also assessed DA2's impact on zebrafish behavior. Although not statistically significant, differences in distances traveled (0.33-0.39, 95% confidence interval: -0.46-1.1, p = 0.2033) and latencies (-0.016-0.018, 95% confidence interval: -0.052-0.021, p = 0.1917) hinted at negative effects. These results highlight DA2's ototoxic properties affecting zebrafish auditory systems and behavior. Further investigation into DA2's effects on aquatic organisms and potential mitigation strategies are essential. These findings contribute to understanding DA2's safety profile, benefiting aquatic ecosystems and human health assessments.
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Affiliation(s)
- Hee Soo Yoon
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Ansan Hospital, Ansan 15355, Republic of Korea; (H.S.Y.); (K.T.H.); (S.H.); (S.P.); (E.H.); (H.w.B.); (Y.K.L.); (K.H.L.); (Y.C.R.)
| | - Kyung Tae Hyun
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Ansan Hospital, Ansan 15355, Republic of Korea; (H.S.Y.); (K.T.H.); (S.H.); (S.P.); (E.H.); (H.w.B.); (Y.K.L.); (K.H.L.); (Y.C.R.)
| | - Sumin Hong
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Ansan Hospital, Ansan 15355, Republic of Korea; (H.S.Y.); (K.T.H.); (S.H.); (S.P.); (E.H.); (H.w.B.); (Y.K.L.); (K.H.L.); (Y.C.R.)
| | - Saemi Park
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Ansan Hospital, Ansan 15355, Republic of Korea; (H.S.Y.); (K.T.H.); (S.H.); (S.P.); (E.H.); (H.w.B.); (Y.K.L.); (K.H.L.); (Y.C.R.)
| | - Eunjung Han
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Ansan Hospital, Ansan 15355, Republic of Korea; (H.S.Y.); (K.T.H.); (S.H.); (S.P.); (E.H.); (H.w.B.); (Y.K.L.); (K.H.L.); (Y.C.R.)
| | - Hyun woo Baek
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Ansan Hospital, Ansan 15355, Republic of Korea; (H.S.Y.); (K.T.H.); (S.H.); (S.P.); (E.H.); (H.w.B.); (Y.K.L.); (K.H.L.); (Y.C.R.)
| | - Yun Kyoung Lee
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Ansan Hospital, Ansan 15355, Republic of Korea; (H.S.Y.); (K.T.H.); (S.H.); (S.P.); (E.H.); (H.w.B.); (Y.K.L.); (K.H.L.); (Y.C.R.)
- Biomedical Research Center, Korea University College of Medicine, Ansan Hospital, Ansan 15355, Republic of Korea
| | - Kang Hyeon Lim
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Ansan Hospital, Ansan 15355, Republic of Korea; (H.S.Y.); (K.T.H.); (S.H.); (S.P.); (E.H.); (H.w.B.); (Y.K.L.); (K.H.L.); (Y.C.R.)
| | - Yoon Chan Rah
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Ansan Hospital, Ansan 15355, Republic of Korea; (H.S.Y.); (K.T.H.); (S.H.); (S.P.); (E.H.); (H.w.B.); (Y.K.L.); (K.H.L.); (Y.C.R.)
| | - June Choi
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Ansan Hospital, Ansan 15355, Republic of Korea; (H.S.Y.); (K.T.H.); (S.H.); (S.P.); (E.H.); (H.w.B.); (Y.K.L.); (K.H.L.); (Y.C.R.)
- Zebrafish Translational Medical Research Center, Korea University, Ansan 15355, Republic of Korea
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Lim SJ, Jeon ET, Baek N, Chung YH, Kim SY, Song I, Rah YC, Oh KH, Choi J. Prediction of Hearing Prognosis After Intact Canal Wall Mastoidectomy With Tympanoplasty Using Artificial Intelligence. Otolaryngol Head Neck Surg 2023; 169:1597-1605. [PMID: 37538032 DOI: 10.1002/ohn.472] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [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: 12/11/2022] [Revised: 07/02/2023] [Accepted: 07/14/2023] [Indexed: 08/05/2023]
Abstract
OBJECTIVE To evaluate the performance of a machine learning model and the effects of major prognostic factors on hearing outcomes following intact canal wall (ICW) mastoidectomy with tympanoplasty. STUDY DESIGN Retrospective cross-sectional study. SETTING Tertiary hospital. METHODS A total of 484 patients with chronic otitis media who underwent ICW tympanomastoidectomy between January 2007 and December 2020 were included in this study. Successful hearing outcomes were defined by a postoperative air-bone gap (ABG) of ≤20 dB and preoperative air conduction (AC)-postoperative AC value of ≥15 dB according to the Korean Otological Society guidelines for outcome reporting after chronic otitis media surgery. The light gradient boosting machine (LightGBM) and multilayer perceptron (MLP) models were tested as artificial intelligence models and compared using logistic regression. The main outcome assessed was the successful hearing outcome after surgery, measured using the area under the receiver operating characteristic curve (AUROC). RESULTS In the analysis using the postoperative ABG criterion, the LightGBM exhibited a significantly higher AUROC compared to those of the baseline model (mean, 0.811). According to the difference between preoperative and postoperative AC, the MLP showed a significantly higher AUROC than those of the baseline model (mean, 0.795). CONCLUSION This study analyzed multiple factors that could affect the hearing outcome using different artificial intelligence models and found that preoperative hearing status was the most important factor. Our findings provide additional information regarding postoperative hearing for clinicians.
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Affiliation(s)
- Sung Jin Lim
- Department of Otorhinolaryngology-Head and Neck Surgery, Ansan Hospital, Korea University College of Medicine, Ansan, Republic of Korea
| | - Eun-Tae Jeon
- Department of Neurology, Korea University Ansan Hospital, College of Medicine, Korea University, Ansan, Republic of Korea
| | - Namyoung Baek
- Medical Science Research Center, Korea University Ansan Hospital, Korea University College of Medicine, Ansan, Republic of Korea
| | - Young Han Chung
- Department of Otorhinolaryngology-Head and Neck Surgery, Ansan Hospital, Korea University College of Medicine, Ansan, Republic of Korea
| | - Sang Yeop Kim
- Department of Otorhinolaryngology-Head and Neck Surgery, Ansan Hospital, Korea University College of Medicine, Ansan, Republic of Korea
| | - Insik Song
- Department of Otorhinolaryngology-Head and Neck Surgery, Ansan Hospital, Korea University College of Medicine, Ansan, Republic of Korea
| | - Yoon Chan Rah
- Department of Otorhinolaryngology-Head and Neck Surgery, Ansan Hospital, Korea University College of Medicine, Ansan, Republic of Korea
| | - Kyoung Ho Oh
- Department of Otorhinolaryngology-Head and Neck Surgery, Ansan Hospital, Korea University College of Medicine, Ansan, Republic of Korea
| | - June Choi
- Department of Otorhinolaryngology-Head and Neck Surgery, Ansan Hospital, Korea University College of Medicine, Ansan, Republic of Korea
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Song I, Oh KH, Kim HJ, Lee YH, Lim KH, Yoon HS, Rah YC, Choi J. Audiologic results of total ossicular replacement prosthesis bypassing the stapes suprastructure in canal wall down mastoidectomy. Am J Otolaryngol 2023; 44:103969. [PMID: 37437334 DOI: 10.1016/j.amjoto.2023.103969] [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: 04/07/2023] [Revised: 06/21/2023] [Accepted: 07/04/2023] [Indexed: 07/14/2023]
Abstract
OBJECTIVES Sometimes performing PORP adequately is challenging when the stapes is tilted or the suprastructure is partially damaged owing to inflammation or infection. In such cases, the implementation of a TORP bypassing the stapes can be a useful alternative. This study aimed to investigate whether bypassing the stapes suprastructure during total ossicular replacement prosthesis (TORP) affects postoperative complications or audiological outcomes. MATERIAL AND METHODS Among 104 patients who underwent open cavity mastoidectomy and ossiculoplasty using a titanium prosthesis at Korea University Ansan Hospital between January 2012 and December 2019, we compared the preoperative and postoperative audiological results and surgical complications of 52, 21, and 31 patients who underwent partial ossicular replacement prosthesis (PORP), TORP bypassing the remaining stapes suprastructure, and TORP on the stapes footplate or oval window, respectively. RESULTS The air-bone gap before surgery was significantly different in the TORP on the stapes footplate group (34.2 ± 12.0 dB) than that in the PORP (22.9 ± 13.8 dB) and TORP bypassing the stapes groups (20.7 ± 11.5 dB, p < 0.001). After surgery, there were no significant differences among the groups (p = 0.818). The air-bone gap difference before surgery was associated with the presence of stapes before surgery (p < 0.001). There was no difference in the proportion of postoperative tympanic perforation, whether it was a revision surgery, malleus status, or the size of perforation of the tympanic membrane among the three groups. CONCLUSION When performing ossiculoplasty using TORP, bypassing the stapes did not affect surgical and audiologic outcomes.
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Affiliation(s)
- Insik Song
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Korea University Ansan Hospital, Ansan, Republic of Korea
| | - Kyoung Ho Oh
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Korea University Ansan Hospital, Ansan, Republic of Korea
| | - Hong Jin Kim
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Korea University Ansan Hospital, Ansan, Republic of Korea
| | - Ye Hwan Lee
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Korea University Ansan Hospital, Ansan, Republic of Korea
| | - Kang Hyeon Lim
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Korea University Ansan Hospital, Ansan, Republic of Korea
| | - Hee Soo Yoon
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Korea University Ansan Hospital, Ansan, Republic of Korea
| | - Yoon Chan Rah
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Korea University Ansan Hospital, Ansan, Republic of Korea
| | - June Choi
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Korea University Ansan Hospital, Ansan, Republic of Korea; Department of Medical Informatics, Korea University College of Medicine, Seoul, Republic of Korea.
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Chang YS, Song I, Han J, Choi J, Chan Rah Y. Electrophysiological Changes Associated with the Progression of Noise-Induced Hearing Loss. J Int Adv Otol 2023; 19:485-491. [PMID: 38088321 PMCID: PMC10765233 DOI: 10.5152/iao.2023.231192] [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: 04/27/2023] [Accepted: 07/20/2023] [Indexed: 12/18/2023] Open
Abstract
BACKGROUND The aim of this study is to evaluate the clinical characteristics and electrophysiological changes in patients with different degrees of noise-induced hearing loss compared with those of normal controls to elucidate the progression of auditory neural damage attributed to noise exposure. METHODS A retrospective cohort study was conducted through a review of the medical records for the patients who presented to a tertiary referral center. Sixty-nine participants were included in the study: 29 had noise-induced hearing loss, and 40 were healthy controls. All the participants underwent electrophysiological tests and pure-tone audiometry. RESULTS Nine patients showed mild hearing loss (mild hearing loss group), while the others showed worse than moderate hearing loss on puretone audiometry (severe hearing loss group). Significantly reduced wave I and V amplitudes of auditory brainstem response were present in both mild and severe hearing loss groups compared to the control group (P -lt; .001 and P=.002, respectively), without significant differences between the mild and severe hearing loss groups. In the multivariate analysis, auditory brainstem response wave V amplitude was negatively associated with auditory brainstem response wave I-V inter-peak latency delay (B=-0.48, P=.02). CONCLUSION The results of the present study confirm the similarity in the electrophysiological characteristics between the mild and severe hearing loss groups. Thus, widespread disruption in the auditory neural conduction could have been established in the early period when the patient developed mild hearing loss following noise exposure.
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Affiliation(s)
- Young-Soo Chang
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Korea University Ansan Hospital, Ansan, Republic of Korea
- Department of Otorhinolaryngology-Head and Neck Surgery, Sanggye Paik Hospital, College of Medicine, Inje University, Seoul, Republic of Korea
| | - Insik Song
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Korea University Ansan Hospital, Ansan, Republic of Korea
| | - JungHyun Han
- Department of Computer Science and Engineering, Korea University College of Informatics, Seoul, Republic of Korea
| | - June Choi
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Korea University Ansan Hospital, Ansan, Republic of Korea
| | - Yoon Chan Rah
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Korea University Ansan Hospital, Ansan, Republic of Korea
- Jenks Vestibular Physiology Lab, Massachusetts Eye and Ear Infirmary, Massachusetts, USA
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Song I, Kim M, Choi H, Kim JH, Lim KH, Yoon HS, Rah YC, Park E, Im GJ, Song JJ, Chae SW, Choi J. Hydrophilic and lipophilic statin use and risk of hearing loss in hyperlipidemia using a Common Data Model: multicenter cohort study. Sci Rep 2023; 13:12373. [PMID: 37524760 PMCID: PMC10390480 DOI: 10.1038/s41598-023-39316-x] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Accepted: 07/23/2023] [Indexed: 08/02/2023] Open
Abstract
Hearing impairment, the third largest health burden worldwide, currently lacks definitive treatments or preventive drugs. This study compared the effects of hydrophilic and lipophilic statin on hearing loss using a common database model. This retrospective multicenter study was conducted in three hospitals in South Korea (Anam, Guro, Ansan). We enrolled patients with hyperlipidemia with an initial hearing loss diagnosis. Data were collected during January 1, 2022-December 31, 2021 using the Observational Health Data Science and Informatics open-source software and Common Data Model database. The primary outcome was the occurrence of first-time hearing loss following a hyperlipidemia diagnosis, as documented in the Common Data Model cohort database. The measures of interest were hearing loss risk between hydrophilic and lipophilic statin use. Variables were compared using propensity score matching, Cox proportional regression, and meta-analysis. Among 37,322 patients with hyperlipidemia, 13,751 (7669 men and 6082 women) and 23,631 (11,390 men and 12,241 women) were treated with hydrophilic and lipophilic statins, respectively. After propensity score matching, according to the Kaplan-Meier curve, hearing loss risk did not significantly differ among the hospitals. The hazard ratio (HR) of the male patients from Anam (0.29, [95% confidence interval (CI), 0.05-1.51]), Guro (HR, 0.56, [95% CI 0.18-1.71]), and Ansan (hazard ratio, 0.29, [95% CI 0.05-1.51]) hospitals were analyzed using Cox proportional regression. Overall effect size (HR, 0.40, [95% CI 0.18-0.91]) was estimated using meta-analysis, which indicated that hearing loss risk among hydrophilic statin users was less than that among lipophilic statin users and was statistically significant. Men in the hydrophilic statin group had a lower risk of hearing impairment than those in the lipophilic statin group.
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Affiliation(s)
- Insik Song
- Department of Otorhinolaryngology-Head and Neck Surgery, Ansan Hospital, Korea University College of Medicine, Ansan, Republic of Korea
| | - Minjin Kim
- Department of Biostatistics, Korea University College of Medicine, Seoul, Republic of Korea
- Biomedical Research Center, Korea University Ansan Hospital, Ansan, Republic of Korea
| | - Hangseok Choi
- Department of Biostatistics, Korea University College of Medicine, Seoul, Republic of Korea
- Biomedical Research Center, Korea University Ansan Hospital, Ansan, Republic of Korea
| | - Jeong Hwan Kim
- Department of Otorhinolaryngology-Head and Neck Surgery, Ansan Hospital, Korea University College of Medicine, Ansan, Republic of Korea
| | - Kang Hyeon Lim
- Department of Otorhinolaryngology-Head and Neck Surgery, Ansan Hospital, Korea University College of Medicine, Ansan, Republic of Korea
| | - Hee Soo Yoon
- Department of Otorhinolaryngology-Head and Neck Surgery, Ansan Hospital, Korea University College of Medicine, Ansan, Republic of Korea
| | - Yoon Chan Rah
- Department of Otorhinolaryngology-Head and Neck Surgery, Ansan Hospital, Korea University College of Medicine, Ansan, Republic of Korea
| | - Euyhyun Park
- Department of Otorhinolaryngology-Head and Neck Surgery, Anam Hospital, Korea University College of Medicine, Seoul, Republic of Korea
| | - Gi Jung Im
- Department of Otorhinolaryngology-Head and Neck Surgery, Anam Hospital, Korea University College of Medicine, Seoul, Republic of Korea
| | - Jae-Jun Song
- Department of Otorhinolaryngology-Head and Neck Surgery, Guro Hospital, Korea University College of Medicine, Seoul, Republic of Korea
| | - Sung-Won Chae
- Department of Otorhinolaryngology-Head and Neck Surgery, Guro Hospital, Korea University College of Medicine, Seoul, Republic of Korea
| | - June Choi
- Department of Otorhinolaryngology-Head and Neck Surgery, Ansan Hospital, Korea University College of Medicine, Ansan, Republic of Korea.
- Department of Medical Informatics, Korea University College of Medicine, Seoul, Republic of Korea.
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Kim M, Park DH, Choi H, Song I, Lim KH, Yoon HS, Rah YC, Choi J. A Multicenter Cohort Study on the Association between Metformin Use and Hearing Loss in Patients with Type 2 Diabetes Mellitus Using a Common Data Model. J Clin Med 2023; 12:jcm12093145. [PMID: 37176586 PMCID: PMC10179543 DOI: 10.3390/jcm12093145] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 04/22/2023] [Accepted: 04/24/2023] [Indexed: 05/15/2023] Open
Abstract
We attempted to explore the association between metformin use and hearing loss in in a large-scale study. This retrospective multicenter cohort study assessed the data of patients with type 2 diabetes mellitus (DM) aged over 40 years using the Observational Health Data Science and Informatics open-source software and the Common Data Model database from 1 January 2002 to 31 December 2019. Each participant was selected using the ICD-10-CM diagnosis code E11 for type 2 DM with sensorineural hearing loss. The participants were divided into metformin and non-metformin users. The outcome measure was the first occurrence of hearing loss after the diagnosis of DM as measured by the CDM cohort study. A total of 80,596 patients, including 46,152 metformin users and 34,444 non-metformin users from three hospitals were assessed. After calibration, we compared the risk of hearing loss using Kaplan-Meier curves, and found significant differences between the groups. The calibrated hazard ratio in the three hospitals (0.79 [95% confidence interval, 0.57-1.12]) was summarized. These findings suggest that the probability of hearing loss-free survival in the metformin user group is higher than that in the non-metformin user group.
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Affiliation(s)
- Minjin Kim
- Department of Biostatistics, Korea University College of Medicine, Seoul 02842, Republic of Korea
- Medical Science Research Center, Korea University Ansan Hospital, Ansan 15355, Republic of Korea
| | - Dong Heun Park
- Department of Otorhinolaryngology-Head and Neck Surgery, Ansan Hospital, Korea University College of Medicine, Ansan 15355, Republic of Korea
| | - Hangseok Choi
- Department of Biostatistics, Korea University College of Medicine, Seoul 02842, Republic of Korea
- Medical Science Research Center, Korea University Ansan Hospital, Ansan 15355, Republic of Korea
| | - Insik Song
- Department of Otorhinolaryngology-Head and Neck Surgery, Ansan Hospital, Korea University College of Medicine, Ansan 15355, Republic of Korea
| | - Kang Hyeon Lim
- Department of Otorhinolaryngology-Head and Neck Surgery, Ansan Hospital, Korea University College of Medicine, Ansan 15355, Republic of Korea
| | - Hee Soo Yoon
- Department of Otorhinolaryngology-Head and Neck Surgery, Ansan Hospital, Korea University College of Medicine, Ansan 15355, Republic of Korea
| | - Yoon Chan Rah
- Department of Otorhinolaryngology-Head and Neck Surgery, Ansan Hospital, Korea University College of Medicine, Ansan 15355, Republic of Korea
| | - June Choi
- Department of Otorhinolaryngology-Head and Neck Surgery, Ansan Hospital, Korea University College of Medicine, Ansan 15355, Republic of Korea
- Department of Medical Informatics, Korea University College of Medicine, Seoul 02842, Republic of Korea
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Kim JH, Kim HJ, Lee YH, Choi H, Lim KH, Yoon HS, Rah YC, Oh KH, Choi J. Analysis of hearing prognosis risk factors in pediatric unilateral sudden sensorineural hearing loss. Am J Otolaryngol 2023; 44:103878. [PMID: 37058908 DOI: 10.1016/j.amjoto.2023.103878] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2023] [Accepted: 03/25/2023] [Indexed: 04/16/2023]
Abstract
OBJECTIVES Pediatric idiopathic sudden hearing loss (PISSNHL) is a rare disease with no established factor affecting its prognosis. In this study, we investigate the risk factors affecting the prognosis of PISSNHL. MATERIAL AND METHODS Among the patients who visited our hospital from January 2010 to December 2021, the characteristics associated prognosis of 54 patients with unilateral PISSNHL were retrospectively confirmed. RESULTS Patients' recovery was determined by applying Siegel's criteria (SC) and AAO-HNS criteria (AC). Twenty-seven (50 %) and 29 patients (54.3 %) recovered for SC and AC, respectively. Age, sex, side, duration between onset and treatment, administration of intra-tympanic steroid injection, accompanying symptoms (tinnitus and dizziness), BMI, serum creatinine level, neutrophil/lymphocyte ratio (NLR), platelet/lymphocyte count (PLR), lymphocyte count, and platelet count were not significantly different between the recovery group and the poor recovery group (P > 0.05). The patients were divided into five groups according to the initial hearing of the affected ear and again according to their audiogram type. The initial hearing levels, hearing level severity, and the audiogram type were significantly different between the deaf group (>100 dB HL) and the non-deaf group (P < 0.05). CONCLUSION The prognosis of PISSNHL is closely related to the initial hearing at the onset. If the initial hearing level is <100 dB, the recovery rate is approximately 50 %, therefore requiring active treatment and emotional support. It may also be related to the type of audiometric curve.
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Affiliation(s)
- Jeong Hwan Kim
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University Ansan Hospital, Korea University, College of Medicine, Ansan, Republic of Korea
| | - Hong Jin Kim
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University Ansan Hospital, Korea University, College of Medicine, Ansan, Republic of Korea
| | - Ye Hwan Lee
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University Ansan Hospital, Korea University, College of Medicine, Ansan, Republic of Korea
| | - Hangseok Choi
- Department of Biostatistics Korea University College of Medicine, Seoul, Republic of Korea; Medical Science Research Center, Korea University College of Medicine, Seoul, Republic of Korea
| | - Kang Hyeon Lim
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University Ansan Hospital, Korea University, College of Medicine, Ansan, Republic of Korea
| | - Hee Soo Yoon
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University Ansan Hospital, Korea University, College of Medicine, Ansan, Republic of Korea
| | - Yoon Chan Rah
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University Ansan Hospital, Korea University, College of Medicine, Ansan, Republic of Korea
| | - Kyoung Ho Oh
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University Ansan Hospital, Korea University, College of Medicine, Ansan, Republic of Korea.
| | - June Choi
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University Ansan Hospital, Korea University, College of Medicine, Ansan, Republic of Korea; Department of Medical Informatics, Korea University College of Medicine, Seoul, Republic of Korea.
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Jeong YJ, Oh KH, Lim SJ, Park DH, Rah YC, Choi J. Analysis of auditory brain stem response and otoacoustic emission in unilateral tinnitus patients with normal hearing. Auris Nasus Larynx 2022:S0385-8146(22)00228-0. [DOI: 10.1016/j.anl.2022.11.008] [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] [Received: 10/03/2022] [Revised: 11/13/2022] [Accepted: 11/28/2022] [Indexed: 12/14/2022]
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Park S, Lim KH, Lim SJ, Park DH, Rah YC, Choi J. Functional Outcomes of Single-Stage Ossiculoplasty in Chronic Otitis Media With or Without Cholesteatoma*. J Int Adv Otol 2022; 18:415-419. [PMID: 35971270 PMCID: PMC9524377 DOI: 10.5152/iao.2022.21360] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [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] [Indexed: 11/22/2022] Open
Abstract
Background: Two-stage ossiculoplasty has been widely used for hearing improvement in chronic otitis media with or without cholesteatoma. However, the outcomes of single-stage ossiculoplasty have not been fully clarified.The aim of this study is to determine whether the outcomes of single-stage ossiculoplasty are comparable with those of 2-stage ossiculoplasty in chronic otitis media with or without cholesteatoma. Methods: Medical records of 191 cases (187 patients) who underwent single-stage ossiculoplasty from January 2011 to May 2018 at our hospital were retrospectively reviewed. Results: Polycel and titanium were used in 56 and 135 cases, respectively. In chronic otitis media without cholesteatoma, the success rate of polycel and titanium partial ossicular replacement prosthesis was 80.7% and 81.6%, respectively. In chronic otitis media with cholesteatoma, the success rate of polycel and titanium partial ossicular replacement prosthesis was 63.6% and 64.6%, respectively, while that of polycel and titanium total ossicular replacement prosthesis was 45.9% and 47.8%, respectively. Conclusion: These results suggest that single-stage ossiculoplasty is a suitable option for recovering postoperative hearing in chronic otitis media with or without cholesteatoma. Thus, if middle ear inflammation can be sufficiently treated in the first stage, single-stage ossiculoplasty is a suitable option for chronic otitis media with or without cholesteatoma.
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Affiliation(s)
| | | | | | | | | | - June Choi
- Corresponding author: June Choi, e-mail:
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13
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Han E, Lee DH, Park S, Rah YC, Park HC, Choi JW, Choi J. Noise-induced hearing loss in zebrafish model: Characterization of tonotopy and sex-based differences. Hear Res 2022; 418:108485. [DOI: 10.1016/j.heares.2022.108485] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Revised: 02/14/2022] [Accepted: 03/14/2022] [Indexed: 12/22/2022]
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Park JH, Cho SI, Choi J, Han J, Rah YC. Pupil responses associated with the perception of gravitational vertical under directional optic flows. Sci Rep 2021; 11:21303. [PMID: 34716355 PMCID: PMC8556311 DOI: 10.1038/s41598-021-00346-y] [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: 05/21/2021] [Accepted: 09/30/2021] [Indexed: 11/09/2022] Open
Abstract
This study assessed the pupil responses in the sensory integration of various directional optic flows during the perception of gravitational vertical. A total of 30 healthy participants were enrolled with normal responses to conventional subjective visual vertical (SVV) which was determined by measuring the difference (error angles) between the luminous line adjusted by the participants and the true vertical. SVV was performed under various types of rotational (5°/s, 10°/s, and 50°/s) and straight (5°/s and 10°/s) optic flows presented via a head-mounted display. Error angles (°) of the SVV and changes in pupil diameters (mm) were measured to evaluate the changes in the visually assessed subjective verticality and related cognitive demands. Significantly larger error angles were measured under rotational optic flows than under straight flows (p < 0.001). The error angles also significantly increased as the velocity of the rotational optic flow increased. The pupil diameter increased after starting the test, demonstrating the largest diameter during the final fine-tuning around the vertical. Significantly larger pupil changes were identified under rotational flows than in straight flows. Pupil changes were significantly correlated with error angles and the visual analog scale representing subjective difficulties during each test. These results suggest increased pupil changes for integrating more challenging visual sensory inputs in the process of gravity perception.
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Affiliation(s)
- Joo Hyun Park
- grid.416665.60000 0004 0647 2391Department of Otorhinolaryngology-Head and Neck Surgery, Dongguk University College of Medicine, Ilsan Hospital, Goyang, Republic of Korea
| | - Sung Ik Cho
- grid.222754.40000 0001 0840 2678Department of Computer Science and Engineering, Korea University College of Informatics, Seoul, Republic of Korea
| | - June Choi
- grid.222754.40000 0001 0840 2678Department of Otorhinolaryngology-Head and Neck Surgery, Korea University Ansan Hospital, Korea University College of Medicine, Seoul, Republic of Korea
| | - JungHyun Han
- grid.222754.40000 0001 0840 2678Department of Computer Science and Engineering, Korea University College of Informatics, Seoul, Republic of Korea
| | - Yoon Chan Rah
- grid.222754.40000 0001 0840 2678Department of Otorhinolaryngology-Head and Neck Surgery, Korea University Ansan Hospital, Korea University College of Medicine, Seoul, Republic of Korea
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15
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Park E, Song I, Jeong YJ, Im GJ, Jung HH, Choi J, Rah YC. Evidence of Cochlear Synaptopathy and the Effect of Systemic Steroid in Acute Idiopathic Tinnitus With Normal Hearing. Otol Neurotol 2021; 42:978-984. [PMID: 33900233 DOI: 10.1097/mao.0000000000003189] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVE To evaluate the electrophysiologic evidence of cochlear synaptopathy and the effects of systemic steroids in acute idiopathic tinnitus with normal hearing. STUDY DESIGN Retrospective review of medical data. SETTING Tertiary referral center. PATIENTS Fifty-nine patients who experienced acute-onset idiopathic tinnitus (within 12 weeks) with normal hearing and the same number of age- and pure-tone threshold-matched control groups. INTERVENTION Electrophysiologic studies of the auditory pathway, oral steroids, and ginkgo biloba. MAIN OUTCOME MEASURES Pure-tone thresholds, wave I and wave V amplitudes of the auditory brainstem response (ABR), tinnitus handicap inventory (THI), and visual analog scale (VAS). RESULTS Significantly reduced ABR wave I amplitude and wave I/wave V ratio were found in the tinnitus group compared with the no tinnitus group. Age and pure-tone threshold were significantly correlated with reduced wave I amplitude and small wave I/wave V ratio. The THI and VAS scores were decreased at 3 and 12 weeks after steroid administration; however, overall changes in THI and VAS scores were not significantly different between the steroid and ginkgo biloba groups. CONCLUSION Potential cochlear synaptopathy was suspected in the early stage of acute idiopathic tinnitus, even in patients with normal hearing. Age and hearing threshold were potentially associated with the development of cochlear synaptopathy. Low-dose oral steroids and ginkgo biloba induced early subjective relief of tinnitus, which maintained up to 12 weeks, however, those changes did not differ between groups.
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Affiliation(s)
- Euyhyun Park
- Department of Otolaryngology-Head and Neck Surgery, Korea University College of Medicine, Seoul, Republic of Korea
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Han MS, Jeong YJ, Im GJ, Song JJ, Chae SW, Chan Rah Y, Choi J. Auditory brainstem response test results in normal hearing adolescents with subjective tinnitus. Int J Pediatr Otorhinolaryngol 2021; 146:110775. [PMID: 34022656 DOI: 10.1016/j.ijporl.2021.110775] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Revised: 04/30/2021] [Accepted: 05/12/2021] [Indexed: 10/21/2022]
Abstract
OBJECTIVES The objective of the study was to analyze the auditory brainstem response (ABR) test results of adolescents with normal hearing threshold who have subjective tinnitus in an effort to determine the probable site of origin of tinnitus. METHODS Among the patients who visited the outpatient clinic of the Department of Otolaryngology at our tertiary hospital from January 2016 to December 2019, adolescents aged 13-18 years with the chief complaint of unilateral subjective tinnitus and pure tone audiometry (PTA) within 25 dB HL were enrolled and retrospectively reviewed. The ABR test parameters (amplitudes and latencies of waves I, III, and V and interpeak latencies [IPLs] of waves I-III, III-V, and I-V) were analyzed and compared between tinnitus ears and contralateral ears without tinnitus. Study participants were divided into the chronic tinnitus (tinnitus duration ≥6 months) and non-chronic tinnitus (tinnitus duration <6 months) groups, and the difference between the two groups was analyzed. RESULTS Ten adolescents were included in the study, and their ABR test results were reviewed. IPL III-V was significantly prolonged in tinnitus ears compared to non-tinnitus ears (p = 0.035). Although other parameters were found to be statistically non-significant, there was preponderance in ABR wave I amplitude; it was smaller in tinnitus ears of chronic tinnitus adolescents than in those of non-chronic tinnitus adolescents (p = 0.114). CONCLUSION The probable site of origin of tinnitus in adolescents with normal hearing might be in the upper brainstem of the auditory pathway. Further analysis of ABR test results in adolescents with tinnitus and normal hearing can help clarify the pathophysiology of tinnitus in adolescents.
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Affiliation(s)
- Mun Soo Han
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University Medicine, Korea University Ansan Hospital, Ansan, South Korea
| | - Yong Jun Jeong
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University Medicine, Korea University Ansan Hospital, Ansan, South Korea
| | - Gi Jung Im
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University Medicine, Korea University Anam Hospital, Seoul, South Korea
| | - Jae-Jun Song
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University Medicine, Korea University Guro Hospital, Seoul, South Korea
| | - Sung-Won Chae
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University Medicine, Korea University Guro Hospital, Seoul, South Korea
| | - Yoon Chan Rah
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University Medicine, Korea University Ansan Hospital, Ansan, South Korea
| | - June Choi
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University Medicine, Korea University Ansan Hospital, Ansan, South Korea.
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Joo JW, Jeong YJ, Han MS, Chang YS, Rah YC, Choi J. Analysis of Auditory Brainstem Response Change, according to Tinnitus Duration, in Patients with Tinnitus with Normal Hearing. J Int Adv Otol 2021; 16:190-196. [PMID: 32784156 DOI: 10.5152/iao.2020.7951] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
OBJECTIVES The purpose of this study was to analyze auditory brainstem response (ABR) waveforms of patients with tinnitus with normal hearing, according to tinnitus duration, and demonstrate the possible pathophysiological mechanisms of tinnitus. MATERIALS AND METHODS From January 2016 to December 2017, patients who presented to our hospital with tinnitus as their chief complaint were enrolled and reviewed retrospectively. Pure tone audiometry and ABR tests were performed. The patients were classified into three groups according to tinnitus duration: acute (<1 month), subacute (1-6 months), and chronic (>6 months). The amplitudes of waves I and V and the latencies of waves I, III, and V were evaluated. In this study, 177 ears of 128 patients with tinnitus with normal hearing were evaluated. RESULTS Wave V amplitude was significantly lower during the subacute phase than during the acute phase. The absolute latency value of wave V was greater during the subacute phase than during the acute phase. The interpeak latency I-V was significantly prolonged during the subacute phase compared with the acute and chronic phases. Wave V amplitude, wave V absolute latency, and interpeak latency I-V varied significantly between cases with a 1-month and 6-month tinnitus history. CONCLUSION The compensatory response to tinnitus decreased sharply after 1 month of symptoms. Early tinnitus identification and treatment initiation are recommended.
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Affiliation(s)
- Jae Woo Joo
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Korea University, Seoul, Republic of Korea
| | - Yong Jun Jeong
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Korea University, Seoul, Republic of Korea
| | - Mun Soo Han
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Korea University, Seoul, Republic of Korea
| | - Young-Soo Chang
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Korea University, Seoul, Republic of Korea
| | - Yoon Chan Rah
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Korea University, Seoul, Republic of Korea
| | - June Choi
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Korea University, Seoul, Republic of Korea
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18
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Affiliation(s)
- Yoon Chan Rah
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University Ansan Hospital, Korea University College of Medicine, Ansan, Korea
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Chang YS, Rah YC, Lee MK, Park S, Kim B, Han K, Choi J. Association between the severity of hearing loss and the risk of dementia within the 2010-2017 national insurance service survey in South Korea. Sci Rep 2020; 10:20679. [PMID: 33244106 PMCID: PMC7693323 DOI: 10.1038/s41598-020-77752-1] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2020] [Accepted: 11/13/2020] [Indexed: 11/15/2022] Open
Abstract
Hearing loss and dementia are highly prevalent neurologic conditions in older adults that can considerably impact the quality of life and create social and familial burdens. To investigate the impact of hearing loss on the risk of developing dementia in a nationwide long-term follow-up study using data obtained from the South Korean National Health Information Database. Retrospective medical data for patients of all ages were extracted from the database between January 2010 and December 2017. According to the national disability registry, the degree of severe-profound hearing loss is classified into six grades. We categorized hearing loss into three groups based on the disability registry severity: (1) severe hearing disability (HD), defined as 1st to 3rd grade disabling hearing loss; (2) non-severe HD, 4th and 5th grade disabling hearing loss; and (3) ipsilateral HD, 6th grade disabling hearing loss. After adjusting for potential confounding variables, the hazard ratio (HR) for all dementia types was 1.336 (95% CI 1.306–1.367) in the severe HD group, 1.312 (95% CI 1.286–1.338) in the non-severe HD group, and 1.257 (95% CI 1.217–1.299) in the ipsilateral HD group. On assessing by the age group, the risk of all dementia types in patients younger than 65 years was as follows: HR 1.933 (95% CI 1.779–2.101), 1.880 (95% CI 1.732–2.041), and 1.601 (95% CI 1.435–1.787) in the severe, non-severe, and ipsilateral HD groups, respectively. This study demonstrates that the impact of hearing loss on dementia incidence is severity-dependent, and the risk increases in patients younger than 65 years of age.
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Affiliation(s)
- Young-Soo Chang
- Department of Otorhinolaryngology - Head and Neck Surgery, Korea University College of Medicine, Korea University Ansan Hospital, 123, Jeokgeum-ro, Danwon-gu, Ansan-si, Gyeonggi-do, 15355, Republic of Korea
| | - Yoon Chan Rah
- Department of Otorhinolaryngology - Head and Neck Surgery, Korea University College of Medicine, Korea University Ansan Hospital, 123, Jeokgeum-ro, Danwon-gu, Ansan-si, Gyeonggi-do, 15355, Republic of Korea
| | - Min Kyu Lee
- Department of Otorhinolaryngology - Head and Neck Surgery, Korea University College of Medicine, Korea University Ansan Hospital, 123, Jeokgeum-ro, Danwon-gu, Ansan-si, Gyeonggi-do, 15355, Republic of Korea
| | - Seongbin Park
- Department of Otorhinolaryngology - Head and Neck Surgery, Korea University College of Medicine, Korea University Ansan Hospital, 123, Jeokgeum-ro, Danwon-gu, Ansan-si, Gyeonggi-do, 15355, Republic of Korea
| | - Bongseong Kim
- Department of Statistics and Actuarial Science, Soongsil University, 369 Sangdo-Ro, Dongjak-Gu, Seoul, 06978, Republic of Korea
| | - Kyungdo Han
- Department of Statistics and Actuarial Science, Soongsil University, 369 Sangdo-Ro, Dongjak-Gu, Seoul, 06978, Republic of Korea.
| | - June Choi
- Department of Otorhinolaryngology - Head and Neck Surgery, Korea University College of Medicine, Korea University Ansan Hospital, 123, Jeokgeum-ro, Danwon-gu, Ansan-si, Gyeonggi-do, 15355, Republic of Korea.
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Chang YS, Park SM, Rah YC, Han EJ, Koun SI, Chang J, Choi J. In vivo assessment of the toxicity of electronic cigarettes to zebrafish ( Danio rerio) embryos, following gestational exposure, in terms of mortality, developmental toxicity, and hair cell damage: Toxicity of E-cigs to zebrafish embryos. Hum Exp Toxicol 2020; 40:148-157. [PMID: 32772711 DOI: 10.1177/0960327120947785] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
With the ban of conventional cigarettes from public spaces, electronic cigarette (E-cig) liquids have emerged as a nicotine replacement treatment for smoking cessation. However, consumers possess little knowledge of the ingredients and health effects of E-cig liquids following exposure. This study evaluated hair cell damage and developmental toxicities following gestational exposure to E-cig liquids. Zebrafish embryos were exposed to E-cig liquids at different concentrations (0.1%, 0.2%, and 0.4%). Embryonic developmental toxicity and hair cell damage was evaluated at 6 and 7 d, respectively, after fertilization. The average number of hair cells in the anterior lateral line (ALL) and posterior lateral line (PLL) following E-cig exposure was compared to that of the control. Morphological abnormalities and heart rate were evaluated. E-cig liquids significantly damaged the hair cells in the ALL, compared to the control (control; 52.85 ± 5.29 cells, 0.1% E-cig; 49.43 ± 7.70 cells, 0.2% E-cig; 40.68 ± 12.00 cells, 0.4% E-cig; 32.14 ± 20.75%; n = 29-40; p < 0.01). At high concentrations, E-cig liquids significantly damaged the hair cells in the PLL (control; 36.88 ± 5.43 cells, 0.1% E-cig; 33.06 ± 5.21 cells, 0.2% E-cig; 30.95 ± 8.03 cells, 0.4% E-cig; 23.72 ± 15.53%, n = 29-40; p < 0.01). No morphological abnormalities in body shape, somites, notochord, tail, and pectoral fin were observed; however, abnormalities were observed in the dorsal fin and heart rate at high concentrations. Thus, gestational exposure to E-cigs significantly damaged hair cells in a concentration-dependent manner and induced developmental toxicities to the dorsal fin and heart rate at high concentrations.
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Affiliation(s)
- Y S Chang
- Department of Otorhinolaryngology - Head and Neck Surgery, 34973Korea University College of Medicine, Korea University Ansan Hospital, Ansan, Republic of Korea
| | - S M Park
- Department of Otorhinolaryngology - Head and Neck Surgery, 34973Korea University College of Medicine, Korea University Ansan Hospital, Ansan, Republic of Korea
| | - Y C Rah
- Department of Otorhinolaryngology - Head and Neck Surgery, 34973Korea University College of Medicine, Korea University Ansan Hospital, Ansan, Republic of Korea
| | - E J Han
- Department of Otorhinolaryngology - Head and Neck Surgery, 34973Korea University College of Medicine, Korea University Ansan Hospital, Ansan, Republic of Korea.,Laboratory of Neurodevelopmental Genetics, Graduate School of Medicine, 34973Korea University, Seoul, Republic of Korea
| | - S I Koun
- Biomedical Research Center, 34973Korea University Ansan Hospital, Ansan, Republic of Korea.,34973Korea University Zebrafish Translational Medical Research Center, Ansan, Republic of Korea
| | - J Chang
- Department of Otorhinolaryngology - Head and Neck Surgery, 65357Hallym University College of Medicine, Seoul, Republic of Korea
| | - J Choi
- Department of Otorhinolaryngology - Head and Neck Surgery, 34973Korea University College of Medicine, Korea University Ansan Hospital, Ansan, Republic of Korea.,34973Korea University Zebrafish Translational Medical Research Center, Ansan, Republic of Korea
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Lim KH, Jeong YJ, Han MS, Rah YC, Cha J, Choi J. Comparisons among vestibular examinations and symptoms of vertigo in sudden sensorineural hearing loss patients. Am J Otolaryngol 2020; 41:102503. [PMID: 32402694 DOI: 10.1016/j.amjoto.2020.102503] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Accepted: 04/05/2020] [Indexed: 10/24/2022]
Abstract
OBJECTIVES Vertigo in sudden sensorineural hearing loss (SSNHL) is hypothesized as an extension of the disease caused by the anatomical proximity of the cochlea and vestibule. The present study aimed to demonstrate the association of vestibular function test (VFT) results with SSNHL disease severity and prognosis. MATERIALS AND METHODS This study assessed clinical records of 263 SSNHL patients admitted to our hospital, between January 2010 and October 2017. Steroid treatment comprised high-dose intravenous dexamethasone (16 mg/d) or oral methylprednisolone (64 mg/d) for 4 days and tapered oral methylprednisolone for 8 days after discharge. Caloric tests were performed in all patients, and cervical vestibular-evoked myogenic potential (c-VEMP) and ocular VEMP (o-VEMP) tests were performed in 209 and 144 patients, respectively. RESULTS Ninety six patients had vertigo, and caloric abnormalities were observed in 119 patients. Initial PTA in patients with vertigo were worse than in those without vertigo (63.0 dB vs 72.7 dB, P = .002). Initial PTA in patients with abnormal o-VEMP was worse than in those with normal o-VEMP (61.4 dB vs 73.0 dB, P = .004). PTA improvement after steroid treatment in patients with vertigo was lower than in those without vertigo (25.0 dB vs 20.9 dB, P = .028). PTA improvement after treatment in patients with abnormal caloric results was lower than in those with normal caloric results (26.0 dB vs 18.4 dB, P = .013). CONCLUSION The functions of vestibular organs, particularly the utricle and lateral semicircular canal, are associated with disease severity and hearing outcome in SSNHL patients.
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Song IS, Han WG, Lim KH, Nam KJ, Yoo MH, Rah YC, Choi J. Clinical Characteristics and Treatment Outcomes of Congenital Cholesteatoma. J Int Adv Otol 2020; 15:386-390. [PMID: 31846916 DOI: 10.5152/iao.2019.6279] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
OBJECTIVES Since its introduction in 2002, the staging system for congenital cholesteatoma, as defined by Potsic, has been used widely owing to its simplicity and predictability. The aim of the present study was to analyze the clinical characteristics and surgical treatment outcomes of congenital cholesteatoma and to correlate them with postoperative recurrence. MATERIALS AND METHODS A retrospective chart review was performed for 38 patients who were diagnosed with congenital cholesteatoma and who underwent surgical resection between August 2007 and November 2014 at the Department of Otorhinolaryngology of our hospital. RESULTS The mean age of the patients was 7.9±8.2 years, and the number of males and females was 20 and 18, respectively. The mean follow-up period was 30±26 months. Of the 38 patients, 9 (24%) had residual or recurrent cholesteatoma during follow-up examination after primary surgery. The results showed that the size (≥4 mm) of the lesion was significantly correlated with residual or recurrent disease (p=0.026). The disease extent (single vs. multiple quadrant involvement), type (closed vs. open type), and stage; applied surgical method (with mastoidectomy vs. without mastoidectomy); and preoperative hearing level (normal vs. abnormal) were not significantly correlated with residual or recurrent disease. CONCLUSION The disease extent, type, and stage; applied surgical methods; and preoperative hearing level were not significantly correlated with residual or recurrent disease. The size (≥4 mm) of congenital cholesteatoma was significantly correlated with residual or recurrent disease.
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Affiliation(s)
- In Sik Song
- Department of Otorhinolaryngology Head and Neck Surgery, Korea University School of Medicine, Ansan-city, Korea, Republic Of
| | - Won Gue Han
- Department of Otorhinolaryngology Head and Neck Surgery, Korea University School of Medicine, Ansan-city, Korea, Republic Of
| | - Kang Hyeon Lim
- Department of Otorhinolaryngology Head and Neck Surgery, Korea University School of Medicine, Ansan-city, Korea, Republic Of
| | - Kuk Jin Nam
- Department of Otorhinolaryngology Head and Neck Surgery, Korea University School of Medicine, Ansan-city, Korea, Republic Of
| | - Myung Hoon Yoo
- Department of Otorhinolaryngology Head and Neck Surgery, Kyungpook National University School of Medicine, Daegu, Korea, Republic Of
| | - Yoon Chan Rah
- Department of Otorhinolaryngology Head and Neck Surgery, Korea University School of Medicine, Ansan-city, Korea, Republic Of
| | - June Choi
- Department of Otorhinolaryngology Head and Neck Surgery, Korea University School of Medicine, Ansan-city, Korea, Republic Of
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Han E, Ho Oh K, Park S, Chan Rah Y, Park HC, Koun S, Choi J. Analysis of behavioral changes in zebrafish (Danio rerio) larvae caused by aminoglycoside-induced damage to the lateral line and muscles. Neurotoxicology 2020; 78:134-142. [PMID: 32169463 DOI: 10.1016/j.neuro.2020.03.005] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [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: 09/11/2019] [Revised: 02/29/2020] [Accepted: 03/09/2020] [Indexed: 12/13/2022]
Abstract
Zebrafish behavior is influenced by the lateral line hair cells and muscles. Drug-induced behavioral changes can serve as indicators in the evaluation of drug toxicity. The aminoglycoside family of antibiotics comprise a number of agents, including neomycin (NM) and gentamicin (GM). We hypothesized that NM and GM exert different effects on zebrafish larvae through their action on the lateral line and muscle fibers, inducing different swimming behavioral patterns such as locomotor behavior and the startle response. In this study, 125 μM NM and 5, 10, 20 μM GM induced hair cell damage in the anterior and posterior lateral lines of zebrafish larvae. However, unlike GM, 125 μM NM also caused muscle damage. Locomotor behavior was decreased in the 125 μM NM-exposed group compared to the group exposed to GM. Furthermore, 125 μM NM exposure induced significantly different patterns of various indices of startle behavior compared with the GM exposure groups. Additionally, the larvae exhibited different startle responses depending on the concentration of GM. These results suggest that GM may be the drug-of-choice for analyzing behavioral changes in zebrafish caused by damage to the lateral line alone. Our study highlights the importance of confirming muscle damage in behavioral analyses using zebrafish.
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Affiliation(s)
- Eunjung Han
- Department of Otorhinolaryngology - Head and Neck Surgery, Korea University Ansan Hospital, Korea University, College of Medicine, Seoul, Republic of Korea; Laboratory of Neurodevelopmental Genetics, Graduate School of Medicine, Korea University, Seoul, Republic of Korea
| | - Kyoung Ho Oh
- Department of Otorhinolaryngology - Head and Neck Surgery, Korea University Ansan Hospital, Korea University, College of Medicine, Seoul, Republic of Korea; Korea University Zebrafish Translational Medical Research Center, Ansan, Republic of Korea
| | - Saemi Park
- Department of Otorhinolaryngology - Head and Neck Surgery, Korea University Ansan Hospital, Korea University, College of Medicine, Seoul, Republic of Korea
| | - Yoon Chan Rah
- Department of Otorhinolaryngology - Head and Neck Surgery, Korea University Ansan Hospital, Korea University, College of Medicine, Seoul, Republic of Korea
| | - Hae-Chul Park
- Laboratory of Neurodevelopmental Genetics, Graduate School of Medicine, Korea University, Seoul, Republic of Korea; Korea University Zebrafish Translational Medical Research Center, Ansan, Republic of Korea
| | - Soonil Koun
- Biomedical Research Center, Korea University Ansan Hospital, Ansan, Republic of Korea; Korea University Zebrafish Translational Medical Research Center, Ansan, Republic of Korea.
| | - June Choi
- Department of Otorhinolaryngology - Head and Neck Surgery, Korea University Ansan Hospital, Korea University, College of Medicine, Seoul, Republic of Korea; Korea University Zebrafish Translational Medical Research Center, Ansan, Republic of Korea.
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Kim H, Choi JY, Rah YC, Ahn JC, Kim H, Jeong WJ, Ahn SH. ErbB3, a possible prognostic factor of head and neck squamous cell carcinoma. Oral Surg Oral Med Oral Pathol Oral Radiol 2020; 129:377-387. [PMID: 32081558 DOI: 10.1016/j.oooo.2019.12.006] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Revised: 10/11/2019] [Accepted: 12/08/2019] [Indexed: 12/28/2022]
Abstract
OBJECTIVE We aimed to identify the prognostic factors in head and neck squamous cell carcinoma (HNSCC) by using gene expression analysis and candidate biomarkers for adjuvant therapy. STUDY DESIGN Complementary DNA (cDNA) microarray analysis was performed by using samples from 8 patients, who had died as a result of fulminant recurrence shortly after postoperative radiation therapy, and the results were compared with those from patients with HNSCC of similar stage, but without recurrence. Tissue microarray and immunohistochemistry of samples from 69 patients with oral cavity squamous cell carcinoma indicated ErbB3 to be a prognostic marker, and its expression was analyzed in the HNSCC cell lines. Sapitinib was tested as a concurrent inhibitor of EGFR, ErbB2, and ErbB3. In 15 mice, tumor xenograft was implanted at the lateral tongue, and tumor growth was evaluated. RESULTS ErbB3 overexpression in patients with treatment-resistant HNSCC was associated with relapse-free survival, disease-free survival, and overall survival (P = .018, P = .006, and P = .003, respectively). In the HNSCC cell line, ErbB2 and ErbB3 overexpression was inhibited by postoperative adjuvant therapy with sapitinib, which was also seen to improve survival in an animal model. CONCLUSIONS ErbB3 overexpression predicts a poor clinical outcome. Sapitinib was shown to be an effective inhibitor in the HNSCC cell line and animal models of cancer but with no statistical significance. Further studies with larger groups are needed to better support these results.
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Affiliation(s)
- Heejin Kim
- Department of Otorhinolaryngology-Head and Neck Surgery, Dongtan Sacred Heart Hospital, Hallym University College of Medicine, Hwaseong, South Korea
| | - Joo Yeon Choi
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, South Korea
| | - Yoon Chan Rah
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University Ansan Hospital, Ansan, South Korea
| | - Jae-Cheul Ahn
- Department of Otorhinolaryngology-Head and Neck Surgery, Bundang CHA Medical Center, Seongnam, South Korea
| | - Hyunchul Kim
- Department of Pathology, Dongtan Sacred Heart Hospital, Hallym University College of Medicine, Hwaseong, South Korea
| | - Woo-Jin Jeong
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, South Korea
| | - Soon-Hyun Ahn
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, South Korea; Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University College of Medicine, Seoul National University Hospital, Seoul, South Korea.
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Rhee J, Han E, Nam KJ, Lim KH, Chan Rah Y, Park S, Koun S, Park HC, Choi J. Assessment of hair cell damage and developmental toxicity after fine particulate matter 2.5 μm (PM 2.5) exposure using zebrafish (Danio rerio) models. Int J Pediatr Otorhinolaryngol 2019; 126:109611. [PMID: 31374386 DOI: 10.1016/j.ijporl.2019.109611] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Revised: 07/25/2019] [Accepted: 07/25/2019] [Indexed: 11/26/2022]
Abstract
OBJECTIVES Particulate matter (PM) exposure has become one of the most serious problems. The aim of the present study was to evaluate the hair cell damage and possible developmental toxicity caused by PM2.5 exposure using a zebrafish model. METHODS Zebrafish embryos were exposed to various concentrations of PM2.5. Developmental toxicity was evaluated based on general morphology score (GMS) system and Panzica-Kelly score, and by measurement of body length and heart rate. To evaluate hair cell damage, the average number of total hair cells within four neuromasts exposed to various concentrations of PM2.5 was compared with that of the control group. RESULTS Morphological abnormalities evaluated by the GMS system and Panzica-Kelly score were rare and body length tended to be shorter in the PM2.5-exposed groups. Heart rate decreased significantly in the PM2.5-exposed group. Additionally, significant hair cell damage was observed after PM2.5 exposure. It was dose-dependent and more severe after a longer period exposure (10 dpf). CONCLUSIONS In zebrafish embryos, exposure of PM2.5 in the early stages of life decreased heart rate and caused significant hair cell damage in a dose-dependent manner.
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Affiliation(s)
- Jihye Rhee
- Department of Otorhinolaryngology-Head and Neck Surgery, Veterans Health Service Medical Center, Seoul, Republic of Korea; Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Korea University Ansan Hospital, Seoul, Republic of Korea
| | - Eunjung Han
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Korea University Ansan Hospital, Seoul, Republic of Korea; Laboratory of Neurodevelopmental Genetics, Graduate School of Medicine, Korea University, Seoul, Republic of Korea
| | - Kuk Jin Nam
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Korea University Ansan Hospital, Seoul, Republic of Korea
| | - Kang Hyeon Lim
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Korea University Ansan Hospital, Seoul, Republic of Korea
| | - Yoon Chan Rah
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Korea University Ansan Hospital, Seoul, Republic of Korea
| | - Saemi Park
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Korea University Ansan Hospital, Seoul, Republic of Korea
| | - Soonil Koun
- Biomedical Research Center, Korea University Ansan Hospital, Ansan, Republic of Korea
| | - Hae-Chul Park
- Laboratory of Neurodevelopmental Genetics, Graduate School of Medicine, Korea University, Seoul, Republic of Korea
| | - June Choi
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Korea University Ansan Hospital, Seoul, Republic of Korea.
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Lim KH, Nam KJ, Rah YC, Cha J, Lee SJ, Lee MG, Choi J. The Effect of Natural Ocean Sound Exposure and Ocean-Side Relaxation on Chronic Tinnitus Patients: A Pilot Study in Korea. Ear Nose Throat J 2019; 100:NP256-NP262. [PMID: 31565998 DOI: 10.1177/0145561319873907] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Sound therapy is a treatment modality for tinnitus patients by increasing the background neuronal activity in the auditory system and inducing relative alleviation of the tinnitus. This study was performed to evaluate the efficacy of natural ocean sound exposure and ocean-side relaxation in chronic tinnitus patients. We prospectively enrolled all 18 chronic tinnitus patients (≥6 months) from July to November 2018. All patients completed 90 hours of our programs. The improvement in their subjective tinnitus severity, moods, the quality of life, and sleep was serially assessed using several questionnaires at baseline, immediately, and 1 month after the program. Changes in serum stress hormone levels of the patients were also compared between the baseline and immediately after the program. Average total Tinnitus Handicap Questionnaire score and factor 2 (hearing difficulty related to tinnitus) score significantly improved over time (P = .024 and P = .002). Patient's serum cortisol and epinephrine level did not show significant decrease, and serum norepinephrine and serotonin level significantly increased immediately after our program (P < .001 and P < .001). Natural ocean sound exposure and ocean-side relaxation for short-term period has a potential efficacy on chronic tinnitus patients.
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Affiliation(s)
- Kang Hyeon Lim
- Department of Otorhinolaryngology-Head and Neck Surgery, 34973Korea University College of Medicine, Seoul, Republic of Korea
| | - Kuk Jin Nam
- Department of Otorhinolaryngology-Head and Neck Surgery, 34973Korea University College of Medicine, Seoul, Republic of Korea
| | - Yoon Chan Rah
- Department of Otorhinolaryngology-Head and Neck Surgery, 34973Korea University College of Medicine, Seoul, Republic of Korea
| | - Jaehyung Cha
- Medical Science Research Center, 34973Korea University College of Medicine, Ansan, Republic of Korea
| | - Sung-Jae Lee
- Center for Integrative Medicine, 34973Korea University College of Medicine, Seoul, Republic of Korea
| | - Min-Goo Lee
- Department of Physiology, 34973Korea University College of Medicine, Seoul, Republic of Korea
| | - June Choi
- Department of Otorhinolaryngology-Head and Neck Surgery, 34973Korea University College of Medicine, Seoul, Republic of Korea
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Rhee J, Han E, Rah YC, Park S, Koun S, Choi J. Evaluation of Ototoxicity of an Antifog Agent and the Suspected Underlying Mechanisms: An Animal Study. Ear Nose Throat J 2019; 98:NP131-NP137. [PMID: 31088301 DOI: 10.1177/0145561319850808] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Use of rigid endoscopes has become widespread in middle ear surgeries, thereby attracting attention to the safety of antifog agents. However, few studies on the ototoxicity of antifog agents have been conducted. The purpose of this study was to evaluate hair cell damage and the underlying mechanisms caused by antifog agents using zebrafish larvae. We exposed zebrafish larvae at 3 days postfertilization to various concentrations of the antifog agent, Ultrastop (0.01, 0.02, 0.04, and 0.08%) for 72 hours. The average number of hair cells within 4 neuromasts of larvae, including supraorbital (SO1 and SO2), otic (O1), and occipital (OC1), in the control group were compared to those in the exposure groups. Significant hair cell loss was observed in the experimental groups compared to that in the control group (P < .01; control: 53.88 ± 4.85, 0.01%: 45.08 ± 11.70, 0.02%: 41.36 ± 12.00, 0.04%: 35.36 ± 16.18, and 0.08%: 15.60 ± 7.53 cells). Concentration-dependent increase in hair cell apoptosis by terminal deoxynucleotidyltransferase (TDT)-mediated dUTP-biotin nick end labeling assay (control: 0.00 ± 0.00, 0.01%: 3.48 ± 2.18, 0.02%: 9.64 ± 5.75, 0.04%: 17.72 ± 6.26, and 0.08%: 14.60 ± 8.18 cells) and decrease in the viability of hair cell mitochondria by 2-(4-[dimethylamino] styryl)-N-ethylpyridinium iodide assay (control: 9.61 ± 1.47, 0.01%: 8.28 ± 2.22, 0.02%: 8.45 ± 2.72, 0.04%: 7.25 ± 2.44, and 0.08%: 6.77 ± 3.26 percentage of total area) were observed. Antifog agent exposure can cause hair cell damage in zebrafish larvae, possibly by induction of mitochondrial damage with subsequent apoptosis of hair cells.
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Affiliation(s)
- Jihye Rhee
- Department of Otorhinolaryngology - Head and Neck Surgery, Korea University Ansan Hospital, Korea University, College of Medicine, Seoul, Republic of Korea.,Department of Otorhinolaryngology-Head and Neck Surgery, Veterans Health Service Medical Center, Seoul, Republic of Korea
| | - Eunjung Han
- Department of Otorhinolaryngology - Head and Neck Surgery, Korea University Ansan Hospital, Korea University, College of Medicine, Seoul, Republic of Korea.,Laboratory of Neurodevelopmental Genetics, Graduate School of Medicine, Korea University, Seoul, Republic of Korea
| | - Yoon Chan Rah
- Department of Otorhinolaryngology - Head and Neck Surgery, Korea University Ansan Hospital, Korea University, College of Medicine, Seoul, Republic of Korea
| | - Saemi Park
- Department of Otorhinolaryngology - Head and Neck Surgery, Korea University Ansan Hospital, Korea University, College of Medicine, Seoul, Republic of Korea
| | - Soonil Koun
- Biomedical Research Center, Korea University Ansan Hospital, Ansan, Republic of Korea
| | - June Choi
- Department of Otorhinolaryngology - Head and Neck Surgery, Korea University Ansan Hospital, Korea University, College of Medicine, Seoul, Republic of Korea
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Rah YC, Park S, Koun S, Park HC, Choi J. In vivo assay of the ethanol-induced embryonic hair cell loss and the protective role of the retinoic and folic acid in zebrafish larvae (Danio rerio). Alcohol 2019; 75:113-121. [PMID: 30640074 DOI: 10.1016/j.alcohol.2018.07.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2017] [Revised: 06/15/2018] [Accepted: 07/19/2018] [Indexed: 12/20/2022]
Abstract
In reference to the auditory manifestation of fetal alcohol syndrome, previous work has preferentially focused on the deviant neural development of the auditory system. Changes in the sensory hair cell, the ultimate sensory organ, were not well understood. In this study, we carried out an in vivo assessment of the embryonic hair cell changes on the lateral line of zebrafish upon exposure to various ethanol concentrations (0.25%, 0.5%, 0.75%, and 1.0%). A significant decrease in the hair cell count was confirmed as the ethanol concentration increased. Long-term observation (up to 240 hours post-fertilization [hpf]) suggested an irreversible hair cell loss with little chance of a simple delayed development. For an underlying biological process, a significant increase of hair cell apoptosis and a significant decrease of cytoplasmic mitochondria were confirmed as the ethanol concentration increased. Co-treatment with retinoic (0.1 nM) or folic (0.1 mM) acid with the same concentrations of ethanol resulted in significant increases in the remaining hair cells, compared to the ethanol-only treatment group, for every ethanol concentration. The retinoic acid provided more effective protection over folic acid, resulting in no significant changes in hair cell counts for every ethanol concentration (except 1.0%), compared with that of the negative control (without chemical treatment). Hair cell counts in every ethanol concentration were significantly lower than those in negative controls without chemical treatment after folic acid co-treatment. In conclusion, gestational ethanol exposure causes developmental sensory hair cell loss. Potential underlying mechanisms include retinoic or folic acid deficiency, and mitochondrial damage with subsequent hair cell apoptosis. Hair cell loss could possibly be prevented by administering either retinoic or folic acid, with retinoic acid supplementation as the preferred treatment.
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Lee MY, Son HR, Rah YC, Jung JY, Suh MW. Recovery Phase Spontaneous Nystagmus, Its Existence and Clinical Implication. J Audiol Otol 2018; 23:33-38. [PMID: 30518197 PMCID: PMC6348311 DOI: 10.7874/jao.2018.00206] [Citation(s) in RCA: 2] [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] [Received: 05/03/2018] [Accepted: 07/31/2018] [Indexed: 12/04/2022] Open
Abstract
Background and Objectives Determination of the lesion side based on the direction of the nystagmus could result in confusions to the clinicians due to mismatch between the vestibular function tests and also between vestibular and audiologic features. To minimize these mistakes, we elucidated the clinical manifestation and vestibular function test results in cases with recovery spontaneous nystagmus (rSN). Subjects and Methods Patients who visited ENT clinic of tertiary referral hospital for acute onset continuous vertigo from January 2008 to December 2011 were enrolled. In these patients, we assessed onset time of vertigo, time point of paralytic spontaneous nystagmus (SN) and time point of rSN. At each time point of SN, vestibular function tests and hearing function tests were performed. Results We confirmed the rSN among patients with unilateral vestibulopathy and demonstrated that high gain of the rotatory chair test (slow harmonic acceleration) and/or mismatch of the SN direction and contralateral caloric weakness could indicate the recovery state of patients and nystagmus observed in this stage is recovery phase nystagmus. Conclusions In acute vestibulopathy patients, recovery phase nystagmus was observed and on this stage of disease vestibular function tests shows several features that could predict recovery state.
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Affiliation(s)
- Min Young Lee
- Department of Otorhinolaryngology-Head & Neck Surgery, Dankook University Hospital, Cheonan, Korea
| | - Hye Ran Son
- Department of Otorhinolaryngology-Head & Neck Surgery, Dankook University Hospital, Cheonan, Korea
| | - Yoon Chan Rah
- Department of Otorhinolaryngology-Head & Neck Surgery, Korea University Ansan Hospital, Ansan, Korea
| | - Jae Yun Jung
- Department of Otorhinolaryngology-Head & Neck Surgery, Dankook University Hospital, Cheonan, Korea
| | - Myung-Whan Suh
- Department of Otorhinolaryngology-Head & Neck Surgery, Seoul National University Hospital, Seoul, Korea
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Rah YC, Han EJ, Park S, Rhee J, Koun S, Park HC, Choi J. In vivo assay of the potential gadolinium-induced toxicity for sensory hair cells using a zebrafish animal model. J Appl Toxicol 2018; 38:1398-1404. [DOI: 10.1002/jat.3656] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2018] [Revised: 05/18/2018] [Accepted: 05/19/2018] [Indexed: 01/30/2023]
Affiliation(s)
- Yoon Chan Rah
- Department of Otorhinolaryngology - Head and Neck Surgery, Korea University College of Medicine; Korea University Ansan Hospital; Seoul Republic of Korea
| | - Eun Jung Han
- Korea University Graduate School of Medicine; Laboratory of Neurodevelopmental Genetics; Seoul Republic of Korea
| | - Saemi Park
- Department of Otorhinolaryngology - Head and Neck Surgery, Korea University College of Medicine; Korea University Ansan Hospital; Seoul Republic of Korea
| | - Jihye Rhee
- Department of Otorhinolaryngology - Head and Neck Surgery, Korea University College of Medicine; Korea University Ansan Hospital; Seoul Republic of Korea
| | - Soonil Koun
- Biomedical Research Center Korea University Ansan Hospital; Seoul Republic of Korea
| | - Hae-Chul Park
- Korea University Graduate School of Medicine; Laboratory of Neurodevelopmental Genetics; Seoul Republic of Korea
| | - June Choi
- Department of Otorhinolaryngology - Head and Neck Surgery, Korea University College of Medicine; Korea University Ansan Hospital; Seoul Republic of Korea
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Rah YC, Han WG, Joo JW, Nam KJ, Rhee J, Song JJ, Im GJ, Chae SW, Jung HH, Choi J. One-Stage Complete Resection of Cholesteatoma With Labyrinthine Fistula: Hearing Changes and Clinical Outcomes. Ann Otol Rhinol Laryngol 2018; 127:241-248. [DOI: 10.1177/0003489418755407] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Yoon Chan Rah
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Seoul, Republic of Korea
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University Medical Center Ansan Hospital, Ansan, Republic of Korea
| | - Won Gue Han
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University Medical Center Ansan Hospital, Ansan, Republic of Korea
| | - Jae Woo Joo
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University Medical Center Ansan Hospital, Ansan, Republic of Korea
| | - Kuk Jin Nam
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University Medical Center Ansan Hospital, Ansan, Republic of Korea
| | - Jihye Rhee
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Seoul, Republic of Korea
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University Medical Center Ansan Hospital, Ansan, Republic of Korea
| | - Jae Jun Song
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Seoul, Republic of Korea
| | - Gi Jung Im
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Seoul, Republic of Korea
| | - Sung Won Chae
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Seoul, Republic of Korea
| | - Hak Hyun Jung
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Seoul, Republic of Korea
| | - June Choi
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Seoul, Republic of Korea
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University Medical Center Ansan Hospital, Ansan, Republic of Korea
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Yoo MH, Rah YC, Park S, Koun S, Im GJ, Chae SW, Jung HH, Choi J. Impact of Nicotine Exposure on Hair Cell Toxicity and Embryotoxicity During Zebrafish Development. Clin Exp Otorhinolaryngol 2018; 11:109-117. [PMID: 29307133 PMCID: PMC5951065 DOI: 10.21053/ceo.2017.00857] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [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: 07/15/2017] [Revised: 10/19/2017] [Accepted: 11/10/2017] [Indexed: 11/22/2022] Open
Abstract
Objectives Nicotine has various adverse effects including negative impacts associated with maternal exposure. In the current study, we examined nicotine-induced damage of hair cells and embryotoxicity during zebrafish development. Methods Zebrafish embryos were exposed to nicotine at several concentrations (5, 10, 20, and 40 μM) and embryotoxicity were evaluated at 72 hours, including hatching rate, mortality, teratogenicity rate, and heart rate. Hair cells within the supraorbital (SO1 and SO2), otic (O1), and occipital (OC1) neuromasts were identified at 120 hours. Apoptosis and mitochondrial damage of hair cells were analyzed using TUNEL (terminal deoxynucleotidyl transferase-mediated dUTP-biotin nick end labeling) and DASPEI (2-[4-(dimethylamino)styryl]-N-ethylpyridinium iodide) assays, respectively, and changes of ultrastructure were observed by scanning electron microscopy. Results The control group without nicotine appeared normal with overall mortality and teratogenicity rate <5%. The hatching rate and mortality rate was not significantly different according to nicotine concentration (n=400 each). The abnormal morphology rate (n=400) increased and heart rate (n=150) decreased with increasing nicotine concentration (P<0.05). Nicotine-induced hair cell damage significantly increased as nicotine concentration increased. A significantly greater number of TUNEL-positive cells (P<0.01) and markedly smaller DASPEI area (P<0.01) were shown as nicotine concentration increased. Conclusion The current results suggest that nicotine induces dose-dependent hair cell toxicity in embryos by promoting apoptosis and mitochondrial and structural damage.
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Affiliation(s)
- Myung Hoon Yoo
- Department of Otorhinolaryngology-Head and Neck Surgery, Kyungpook National University School of Medicine, Daegu, Korea
| | - Yoon Chan Rah
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Seoul, Korea
| | - Saemi Park
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Seoul, Korea
| | - Soonil Koun
- Biomedical Research Center, Korea University Ansan Hospital, Ansan, Korea
| | - Gi Jung Im
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Seoul, Korea
| | - Sung Won Chae
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Seoul, Korea
| | - Hak Hyun Jung
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Seoul, Korea
| | - June Choi
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Seoul, Korea
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Abstract
OBJECTIVE In this study, we evaluated the prognostic value of the Dizziness Handicap Inventory (DHI) and the Tinnitus Handicap Inventory (THI) in patients with unilateral sudden sensorineural hearing loss (SSNHL). MATERIALS AND METHODS In total, 101 patients with unilateral SSNHL (44 women, 57 men), who were admitted and treated at our institution between December 2012 and June 2014, were included in the study. All patients completed the questionnaires for DHI and THI during their admission and were treated with bed rest and oral methylprednisolone (1 mg/kg, which was eventually tapered). Of these, 83 patients received intratympanic dexamethasone 4 times over a 2-week period. Demographic data, accompanying symptoms, and DHI and THI subscales were compared between the non-recovery group (Siegel's criteria type 4, n=63) and the recovery group (Siegel's criteria type 1-3, n=38). RESULTS There were no significant differences between the two groups with regard to gender, hypertension, diabetes mellitus, cerebrovascular attack, and tinnitus. Patients in the non-recovery group were significantly older (51.53 vs. 50.24 years, p<0.05) and had a higher incidence of chronic kidney disease (10.53% vs. 1.59%, p<0.05) than those in the recovery group. Although more patients in the non-recovery group complained of dizziness (47.37% vs. 25.40%, p<0.05), DHI subscales were not significantly different between the groups. THI subscales were also not significantly different between the two groups. CONCLUSION DHI and THI questionnaires may have limited prognostic value for patients with unilateral SSNHL.
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Affiliation(s)
- Gyu Ho Hwang
- Department of Otorhinolaryngology, Head and Neck surgery, Korea University College of Medicine, Seoul, Republic of Korea.
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Rah YC, Yoo MH, Choi J, Park S, Park HC, Oh KH, Lee SH, Kwon SY. In vivo assessment of hair cell damage and developmental toxicity caused by gestational caffeine exposure using zebrafish (Danio rerio) models. Neurotoxicol Teratol 2017; 64:1-7. [DOI: 10.1016/j.ntt.2017.08.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2016] [Revised: 05/17/2017] [Accepted: 08/24/2017] [Indexed: 12/12/2022]
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Han WG, Yoo J, Rah YC, Chang J, Im GJ, Song JJ, Chae SW, Jung HH, Choi J. Analysis of Eustachian Tube Dysfunction by Dynamic Slow Motion Video Endoscopy and Eustachian Tube Dysfunction Questionnaire in Chronic Otitis Media. Clin Exp Otorhinolaryngol 2017; 10:315-320. [PMID: 28602066 PMCID: PMC5678035 DOI: 10.21053/ceo.2016.01683] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [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: 12/15/2016] [Revised: 05/11/2017] [Accepted: 05/16/2017] [Indexed: 11/22/2022] Open
Abstract
OBJECTIVES Eustachian tube dysfunction has been associated with most cases of middle-ear disease. We aimed to assess the effectiveness of dynamic slow motion video endoscopy (DSVE) as a test of eustachian tube dysfunction. Furthermore, we assessed the correlation of the test with the Valsalva maneuver, the seven-item Eustachian Tube Dysfunction Questionnaire (ETDQ-7), and intraoperative findings of the eustachian tube. METHODS We retrospectively reviewed medical records from April to September 2014 to identify patients who were diagnosed with chronic otitis media (COM) at Korea University Ansan Hospital. They all underwent surgery because of COM without cholesteatoma and were assessed via the DSVE and ETDQ-7 to determine eustachian tube function. RESULTS We reviewed 46 COM patients and examined 46 ears with COM and 46 ears on the contralateral side to COM that were thought to be normal. The mean DSVE grade in COM ears was 1.57±0.96, while the mean DSVE grade in contralateral ears was 1.15±0.94. The difference in DSVE between COM ears and normal ears was statistically significant (P=0.006). In the ETDQ-7, a higher score was related to intraoperative obstruction of the eustachian tube (P=0.012). CONCLUSION DSVE and ETDQ-7 can provide information regarding preoperative status of eustachian tube dysfunction by measuring dynamic structural changes of the eustachian tube in combination with other diagnostic tests.
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Affiliation(s)
- Won Gue Han
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Seoul, Korea
| | - Jun Yoo
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Seoul, Korea
| | - Yoon Chan Rah
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Seoul, Korea
| | - Jiwon Chang
- Department of Otorhinolaryngology-Head and Neck Surgery, Hallym University College of Medicine, Seoul, Korea
| | - Gi Jung Im
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Seoul, Korea
| | - Jae-Jun Song
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Seoul, Korea
| | - Sung Won Chae
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Seoul, Korea
| | - Hak Hyun Jung
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Seoul, Korea
| | - June Choi
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Seoul, Korea
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Jung JY, Yun HC, Kim TM, Joo JW, Song IS, Rah YC, Chang J, Im GJ, Choi J. Analysis of Effect of Eggshell Membrane Patching for Moderate-to-Large Traumatic Tympanic Membrane Perforation. J Audiol Otol 2017; 21:39-43. [PMID: 28417107 PMCID: PMC5392004 DOI: 10.7874/jao.2017.21.1.39] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [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: 06/02/2016] [Revised: 08/19/2016] [Accepted: 08/22/2016] [Indexed: 11/25/2022] Open
Abstract
Background and Objectives To evaluate the effect of eggshell membrane (ESM) patching for tympanic membrane (TM) perforation, and to investigate correlations between healing time and age, gender, patching time, perforation size, and perforation location. Subjects and Methods One hundred and seventy-five patients diagnosed with traumatic TM perforation at the Department of Otorhinolaryngology-Head and Neck Surgery, Korea University Ansan Hospital, between January 2008 and October 2013. Patients were divided into two groups, according to perforation edge approximation or ESM patching treatment. Healing time was compared between the group that received perforation edge approximation and the group that received ESM patching. Perforation grade, age, onset, and location were also compared between the two groups. Results ESM patching significantly improved healing time compared to spontaneous healing, especially in patients with moderate or large traumatic TM perforations (≥grade II). However, patient age, gender, perforation location, and especially timing of procedure, did not significantly affect healing time. Conclusions ESM patching can be a good treatment choice to promote tympanic membrane healing in large traumatic TM perforations.
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Affiliation(s)
- Jong Yoon Jung
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Seoul, Korea
| | - Hee-Chul Yun
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Seoul, Korea
| | - Tae-Min Kim
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Seoul, Korea
| | - Jae Woo Joo
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Seoul, Korea
| | - In Sik Song
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Seoul, Korea
| | - Yoon Chan Rah
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Seoul, Korea
| | - Jiwon Chang
- Department of Otorhinolaryngology-Head and Neck Surgery, Hallym University College of Medicine, Seoul, Korea
| | - Gi Jung Im
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Seoul, Korea
| | - June Choi
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Seoul, Korea
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Rah YC, Lee MY, Kim SH, Kim DH, Eastwood H, O'Leary SJ, Lee JH. Extended use of systemic steroid is beneficial in preserving hearing in guinea pigs after cochlear implant. Acta Otolaryngol 2016; 136:1213-1219. [PMID: 27466708 DOI: 10.1080/00016489.2016.1206965] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
CONCLUSION Seven-day administration of systemic steroids was more effective in preserving hearing for 12 weeks after cochlear implantation (CI) than a 3-day delivery. OBJECTIVES To determine the effectiveness of extended delivery of systemic steroids to preserve hearing in guinea pigs after CI. METHODS Dexamethasone (4 mg/ml) was delivered parenterally via a mini-osmotic pump for either 3 or 7 days. A dummy CI electrode was inserted via cochleostomy approach in 8-week-old guinea pigs. Auditory thresholds were assessed from tone burst auditory brainstem responses (2, 8, 16, 24, and 32 kHz) at 1 day prior to CI, and 1, 4, and 12 weeks after implantation. Histologic evaluation of the cochleae was carried out. RESULTS No differences were observed in hearing thresholds among groups before CI. Significant hearing preservation was achieved at 8, 16, 24, and 32 kHz only in the 7-day infusion group compared with the control group at 1 week after CI. The same trend was maintained at 4 weeks (16, 24 kHz) and 12 weeks (16, 24, and 32 kHz). Histologic review of the 7-day infusion group revealed less fibrosis and ossification in the scala tympani and the preservation of more spiral ganglion cells, compared with the control group.
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Abstract
CONTEXT Ototoxicity due to medications, such as aminoglycosides, is irreversible, and free radicals in the inner ear are assumed to play a major role. Because melatonin has an antioxidant property, we hypothesize that it might mitigate hair cell injury by aminoglycosides. OBJECTIVE The objective of this study was to evaluate whether melatonin has an alleviative effect on neomycin-induced hair cell injury in zebrafish (Danio rerio). METHODS Various concentrations of melatonin were administered to 5-day post-fertilization zebrafish treated with 125 μM neomycin for 1 h. Surviving hair cells within four neuromasts were compared with that of a control group. Apoptosis was assessed via terminal deoxynucleotidyl transferase dUTP nick-end labeling assay. The changes of ultrastructure were confirmed using a scanning electron microscope. RESULTS Melatonin alleviated neomycin-induced hair cell injury in neuromasts (neomycin + melatonin 100 μM: 13.88 ± 0.91 cells, neomycin only: 7.85 ± 0.90 cells; n = 10, p < 0.05) and reduced neomycin-induced apoptosis in the TUNEL assay. In ultrastructural analysis, hair cells within the neuromasts in zebrafish were preserved exposed to 125 μM neomycin and 100 μM melatonin for 1 h in SEM findings. CONCLUSION Melatonin is effective in alleviating aminoglycoside-induced hair cell injury in zebrafish. The results of this study demonstrated that melatonin has the potential to reduce apoptosis induced by aminoglycosides in zebrafish.
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Affiliation(s)
- Kyoung Ho Oh
- a Department of Otorhinolaryngology-Head and Neck Surgery , Korea University College of Medicine , Seoul , South Korea and
| | - Yoon Chan Rah
- a Department of Otorhinolaryngology-Head and Neck Surgery , Korea University College of Medicine , Seoul , South Korea and
| | - Kyu Ho Hwang
- a Department of Otorhinolaryngology-Head and Neck Surgery , Korea University College of Medicine , Seoul , South Korea and
| | - Seung Hoon Lee
- a Department of Otorhinolaryngology-Head and Neck Surgery , Korea University College of Medicine , Seoul , South Korea and
| | - Soon Young Kwon
- a Department of Otorhinolaryngology-Head and Neck Surgery , Korea University College of Medicine , Seoul , South Korea and
| | - Jae Hyung Cha
- b Medical Science Research Center, Korea University College of Medicine , Ansan , South Korea
| | - June Choi
- a Department of Otorhinolaryngology-Head and Neck Surgery , Korea University College of Medicine , Seoul , South Korea and
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Han WG, Yoon HC, Kim TM, Rah YC, Choi J. Clinical Correlation between Perverted Nystagmus and Brain MRI Abnormal Findings. J Audiol Otol 2016; 20:85-9. [PMID: 27626081 PMCID: PMC5020575 DOI: 10.7874/jao.2016.20.2.85] [Citation(s) in RCA: 3] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2016] [Revised: 05/03/2016] [Accepted: 05/09/2016] [Indexed: 11/22/2022] Open
Abstract
Background and Objectives To analyze the clinical correlation between perverted nystagmus and brain magnetic resonance imaging (MRI) abnormal findings and to evaluate whether perverted nystagmus is clinically significant results of brain abnormal lesions or not. Subjects and Methods We performed medical charts review from January 2008 to July 2014, retrospectively. Patients who were suspected central originated vertigo at Frenzel goggles test were included among patients who visited our hospital. To investigate the correlation with nystagmus suspected central originated vertigo and brain MRI abnormal findings, we confirmed whether performing brain MRI or not. Then we exclude that patients not performed brain MRI. Results The number of patients with perverted nystagmus was 15, upbeating was 1 and down-beating was 14. Among these patients, 5 patients have brain MRI abnormal findings. However, 2 patients with MRI abnormal findings were not associated correctly with perverted nystagmus and only 3 patients with perverted nystagmus were considered central originated vertigo and further evaluation and treatment was performed by the department of neurology. Conclusions Perverted nystagmus was considered to the abnormalities at brain lesions, especially cerebellum, but neurologic symptoms and further evaluation were needed for exact diagnosis of central originated vertigo.
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Affiliation(s)
- Won-Gue Han
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Seoul, Korea
| | - Hee-Chul Yoon
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Seoul, Korea
| | - Tae-Min Kim
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Seoul, Korea
| | - Yoon Chan Rah
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Seoul, Korea
| | - June Choi
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Seoul, Korea
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Abstract
OBJECTIVE To determine the optimal surgical approach for cochlear implantation (CI) preoperatively based on the spatial relation of a displaced facial nerve (FN) and middle ear structures and to analyze clinical outcomes of CHARGE syndrome. METHODS Facial nerve displacement and associated deviation of inner ear structures were analyzed in 13 patients (17 ears) with CHARGE syndrome who underwent CI. Surgical accessibility through the facial recess was assessed based on anatomical landmarks. Postoperative speech performance and associated clinical characteristics were analyzed. RESULTS The most consistently identified ear anomalies were semicircular canal aplasia (100%), ossicular anomaly (100%), and vestibular hypoplasia (88%). Facial nerve displacement was found in 77% of cases (anteroinferior: 47%, anterior: 24%, inferior: 6%). The width of available surgical space around facial recess was significantly greater in cases of facial recess approach (2.85 ± 0.9 mm) than those of alternative approach (0.12 ± 0.29 mm, P = .02). Postoperatively, 53% achieved better than category 4 on the categories of auditory perception (CAP) scale. The CAP category was significantly correlated with internal auditory canal diameter (P = .025) and did not differ according to the applied surgical approach. CONCLUSION Preoperative determination of surgical accessibility through facial recess would be useful for safe surgical approach, and successful hearing rehabilitation was achievable by applying appropriate surgical approaches.
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Affiliation(s)
- Yoon Chan Rah
- Department of Otorhinolaryngology, Seoul National University College of Medicine, Seoul National University Hospital, Seoul, Korea Department of Otorhinolaryngology, Korea University College of Medicine, Korea University Ansan Hospital, Ansan, Korea
| | - Ji Young Lee
- Department of Otorhinolaryngology, Seoul National University College of Medicine, Seoul National University Hospital, Seoul, Korea
| | - Myung-Whan Suh
- Department of Otorhinolaryngology, Seoul National University College of Medicine, Seoul National University Hospital, Seoul, Korea
| | - Moo Kyun Park
- Department of Otorhinolaryngology, Seoul National University College of Medicine, Seoul National University Hospital, Seoul, Korea
| | - Jun Ho Lee
- Department of Otorhinolaryngology, Seoul National University College of Medicine, Seoul National University Hospital, Seoul, Korea
| | - Sun O Chang
- Department of Otorhinolaryngology, Seoul National University College of Medicine, Seoul National University Hospital, Seoul, Korea Department of Otorhinolaryngology, Sungkyunkwan University School of Medicine, Kangbuk Samsung Hospital, Seoul, Republic of Korea
| | - Seung-Ha Oh
- Department of Otorhinolaryngology, Seoul National University College of Medicine, Seoul National University Hospital, Seoul, Korea
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Chang MY, Han SY, Shin HC, Byun JY, Rah YC, Park MK. Protective effect of a purified polyphenolic extract from Ecklonia cava against noise-induced hearing loss: Prevention of temporary threshold shift. Int J Pediatr Otorhinolaryngol 2016; 87:178-84. [PMID: 27368468 DOI: 10.1016/j.ijporl.2016.06.028] [Citation(s) in RCA: 11] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/05/2016] [Revised: 06/06/2016] [Accepted: 06/08/2016] [Indexed: 10/21/2022]
Abstract
OBJECTIVE Noise is one of the most common causes of hearing loss. Approximately 16% of American teenagers (12-19 years) have hearing loss caused by loud noise. The implication of noise-induced hearing loss (NIHL) in teenagers has received increasing attention. Although temporary threshold shift (TTS), a type of NIHL, is a transient hearing loss, it can accelerate age-related hearing loss. Reactive oxygen species are a primary cause of TTS. As the polyphenols from Ecklonia cava are known to have potent antioxidant effects, we investigated the protective effects of a purified polyphenolic extract of Ecklonia cava (PPEE) against TTS in mice. METHODS The radical-scavenging activity of PPEE was evaluated using the 1,1-diphenyl-2-picrylhydrazyl assay. The PPEE + Noise and Saline + Noise groups were administered intraperitoneal PPEE (100 mg/kg) and saline, respectively, for 5 days before exposure to noise at 100 dB SPL for 60 min. Hearing ability was assessed following noise exposure using auditory brainstem responses and distortion product otoacoustic emissions. RESULTS PPEE exhibited significant radical scavenging activity. The ABR threshold shifts 1 day after exposure to noise at 16 kHz and 1, 7, and 14 days after exposure to noise at 32 kHz, were significantly less in the PPEE + Noise than in the Saline + Noise group. One day after noise exposure, mice in the PPEE + Noise group showed a significant degree of protection in relation to their DPOAE level at f2, 17, and 28 kHz. CONCLUSIONS These findings suggest that PPEE may be a potential preventive agent against TTS. In addition, as a food ingredient approved by the United States Food and Drug Administration, PPEE may be administered to those who are exposed to noise inevitably with little likelihood of adverse effects, thereby contributing to the prevention of TTS.
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Affiliation(s)
- Mun Young Chang
- Department of Otorhinolaryngology-Head and Neck Surgery, Chung-Ang University College of Medicine, Seoul, Republic of Korea
| | - Song Yee Han
- Department of Interdisciplinary Program in Biomedical Science, Major Graduate School of Soonchunhyang University, Asan-si, Republic of Korea
| | - Hyeon-Cheol Shin
- CEWIT Center for Systems Biology, State University of New York, Incheon, Republic of Korea
| | - Jang Yul Byun
- Department of Otolaryngology-Head and Neck Surgery, Soon Chun Hyang University College of Medicine, Seoul, Republic of Korea
| | - Yoon Chan Rah
- Department of Otolaryngology-Head and Neck Surgery, Korea University Medical Center Ansan Hospital, Ansan-si, Republic of Korea
| | - Moo Kyun Park
- Department of Otolaryngology-Head and Neck Surgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea.
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Chang J, Yum G, Im HY, Jung JY, Rah YC, Choi J. Short-Term Outcomes of Acute Low-Tone Sensorineural Hearing Loss According to Treatment Modality. J Audiol Otol 2016; 20:47-52. [PMID: 27144234 PMCID: PMC4853891 DOI: 10.7874/jao.2016.20.1.47] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [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: 02/04/2016] [Revised: 02/19/2016] [Accepted: 03/10/2016] [Indexed: 12/29/2022] Open
Abstract
BACKGROUND AND OBJECTIVES We compared improvements in hearing thresholds in acute low-tone sensorineural hearing loss (ALHL) patients after two different treatments: steroid alone and steroid and diuretic combined. We analyzed how the duration between the onset of symptoms and the initiation of treatment affected hearing loss improvement and investigated the relation between presence of vertigo in ALHL patients and ALHL progression to Ménière's disease (MD). SUBJECTS AND METHODS We retrospectively analyzed the medical records of 47 ALHL patients aged 21 to 76 years. Patients received either orally administered steroid alone (n=12) or steroid and diuretic combined (n=35). We compared improvements in the two groups' hearing thresholds at three lower frequencies (125, 250, and 500 Hz) after participants had received one month of each respective treatment. RESULTS Our two treatments did not show any statistical difference in hearing loss improvement after one month. Forty percent of ALHL patients with vertigo developed MD, which was a significantly higher rate than the 12.5% of ALHL patients without vertigo who developed MD. The shorter duration between the onset of symptoms and the initiation of treatment significantly increased improvement in the sum of lower frequency hearing threshold after one month. CONCLUSIONS The current study suggests that steroid and diuretic administered together and steroid alone similarly improve the hearing threshold in ALHL patients after one month. We concluded that patients should initiate ALHL treatment as soon as they experience symptoms. ALHL patients should also be notified of their higher risk of developing MD.
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Affiliation(s)
- Jinkyung Chang
- The Graduate School, Korea University College of Medicine, Seoul, Korea
| | - Gunhwee Yum
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University Ansan Hospital, Ansan, Korea
| | - Ha-Young Im
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University Ansan Hospital, Ansan, Korea
| | - Jong Yoon Jung
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University Ansan Hospital, Ansan, Korea
| | - Yoon Chan Rah
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University Ansan Hospital, Ansan, Korea
| | - June Choi
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University Ansan Hospital, Ansan, Korea
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Yoo MH, Rah YC, Choi J, Park S, Park HC, Oh KH, Lee SH, Kwon SY. Embryotoxicity and hair cell toxicity of silver nanoparticles in zebrafish embryos. Int J Pediatr Otorhinolaryngol 2016; 83:168-74. [PMID: 26968072 DOI: 10.1016/j.ijporl.2016.02.013] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/24/2015] [Revised: 02/07/2016] [Accepted: 02/11/2016] [Indexed: 02/04/2023]
Abstract
OBJECTIVES The purpose of the present study was to evaluate silver nanoparticles (AgNP)-induced embryotoxicity and hair cell toxicity during zebrafish development. METHODS We exposed zebrafish embryos to various AgNP concentrations (30, 60, 120, and 240nM) and evaluated embryotoxicity at 72h and ototoxicity at 120h. Embryotoxicity parameters including abnormal morphology, mortality, hatching rate, and heart rate were investigated. Hair cells within four neuromasts were evaluated. In the present study, the average number of hair cells of zebrafish exposed to AgNP was compared with that of an unexposed control group. RESULTS The hatching rate was not significantly different between groups (control: 90%; AgNP 240nM: 89%). The control group showed 2% mortality and 0% teratogenicity, while the AgNP 240nM group showed increased mortality (11%) and teratogenicity (15%) at 72h (n=100). The heart rate of AgNP-exposed embryos tended to be lower than that of the control group (n=38). Furthermore, AgNP induced apoptotic hair cell damage in the neuromasts (control: 50.7±7.4 cells; 240nM AgNP: 41.1±6.3 cells, n=23). TUNEL positive cell counts increased significantly as AgNP concentration increases (p<0.001, n=20 in each group). CONCLUSIONS The results of this study indicate that AgNP exposure causes embryotoxicity and hair cell toxicity in zebrafish embryos.
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Affiliation(s)
- Myung Hoon Yoo
- Department of Otorhinolaryngology - Head and Neck Surgery, Korea University Ansan Hospital, Korea University, College of Medicine, Seoul, Republic of Korea
| | - Yoon Chan Rah
- Department of Otorhinolaryngology - Head and Neck Surgery, Korea University Ansan Hospital, Korea University, College of Medicine, Seoul, Republic of Korea
| | - June Choi
- Department of Otorhinolaryngology - Head and Neck Surgery, Korea University Ansan Hospital, Korea University, College of Medicine, Seoul, Republic of Korea.
| | - Saemi Park
- Department of Otorhinolaryngology - Head and Neck Surgery, Korea University Ansan Hospital, Korea University, College of Medicine, Seoul, Republic of Korea
| | - Hae-Chul Park
- Laboratory of Neurodevelopmental Genetics, Graduate School of Medicine, Korea University, Seoul, Republic of Korea
| | - Kyoung Ho Oh
- Department of Otorhinolaryngology - Head and Neck Surgery, Korea University Ansan Hospital, Korea University, College of Medicine, Seoul, Republic of Korea
| | - Seung Hoon Lee
- Department of Otorhinolaryngology - Head and Neck Surgery, Korea University Ansan Hospital, Korea University, College of Medicine, Seoul, Republic of Korea
| | - Soon-Young Kwon
- Department of Otorhinolaryngology - Head and Neck Surgery, Korea University Ansan Hospital, Korea University, College of Medicine, Seoul, Republic of Korea
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Chang J, Choi J, Rah YC, Yoo MH, Oh KH, Im GJ, Lee SH, Kwon SY, Park HC, Chae SW, Jung HH. Sodium Selenite Acts as an Otoprotectant against Neomycin-Induced Hair Cell Damage in a Zebrafish Model. PLoS One 2016; 11:e0151557. [PMID: 26974429 PMCID: PMC4790947 DOI: 10.1371/journal.pone.0151557] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [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: 02/13/2015] [Accepted: 03/01/2016] [Indexed: 01/13/2023] Open
Abstract
Sodium selenite is a trace element essential for many physiological functions in the body. It is involved in various biological processes; it acts as a cofactor for antioxidant enzymes that protect against free radicals and is reported to limit metal-mediated oxidative DNA damage. In the present study, we investigated the effect of sodium selenite on neomycin ototoxicity in wild-type and transgenic zebrafish (Brn3C: EGFP). Five or six days post-fertilization, zebrafish larvae were co-exposed to 125 μM neomycin and various concentrations (10 μM, 100 μM, 250 μM, and 500 μM) of sodium selenite for 1 h. Hair cells within neuromasts of the supraorbital (SO1 and SO2), otic (O1), and occipital (OC1) lateral lines were analyzed by fluorescence microscopy (n = 10 fish per treatment). Hair cell survival was estimated as the ratio of the hair cell numbers in each group compared to those of the control group that were not exposed to neomycin. Apoptosis and hair cell damage of neuromasts were evaluated using the terminal deoxynucleotidyl transferase (TdT)-mediated dUTP-biotin nick end labeling (TUNEL) assay and 2-[4-(dimethylamino) styryl]-N-ethylpyridinium iodide (DASPEI) assay, respectively. Ultrastructural changes were evaluated using scanning electron microscopy and transmission electron microscopy. Neuromast hair cells were preserved in zebrafish exposed to 125 μM neomycin and 500 μM sodium selenite for 1 h. Sodium selenite protected against neomycin-induced hair cell loss of neuromasts, reduced apoptosis, and prevented zebrafish ultrastructural changes. We propose that sodium selenite protects against neomycin-induced hair cell damage by inhibiting apoptosis, decreasing the disarray of stereocilia, and preventing ultrastructural changes in the neuromast hair cells of the zebrafish.
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Affiliation(s)
- Jiwon Chang
- Department of Otorhinolaryngology-Head and Neck Surgery, Hallym University College of Medicine, Seoul, Korea
| | - June Choi
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Seoul, Korea
- * E-mail:
| | - Yoon Chan Rah
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Seoul, Korea
| | - Myung Hoon Yoo
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Seoul, Korea
| | - Kyoung Ho Oh
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Seoul, Korea
| | - Gi Jung Im
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Seoul, Korea
| | - Seung Hoon Lee
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Seoul, Korea
| | - Soon Young Kwon
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Seoul, Korea
| | - Hae-Chul Park
- Laboratory of Neurodevelopmental Genetics, Graduate School of Medicine, Korea University, Seoul, Korea
| | - Sung Won Chae
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Seoul, Korea
| | - Hak Hyun Jung
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Seoul, Korea
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Song JJ, Kim JY, Jang AS, Kim SH, Rah YC, Park M, Park MK. Effect of Cadmium on Human Middle Ear Epithelial Cells. J Int Adv Otol 2016; 11:183-7. [DOI: 10.5152/iao.2015.756] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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Rah YC, Choi J, Yoo MH, Yum G, Park S, Oh KH, Lee SH, Kwon SY, Cho SH, Kim S, Park HC. Ecabet sodium alleviates neomycin-induced hair cell damage. Free Radic Biol Med 2015; 89:1176-83. [PMID: 26561773 DOI: 10.1016/j.freeradbiomed.2015.11.007] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [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: 07/16/2015] [Revised: 10/13/2015] [Accepted: 11/06/2015] [Indexed: 02/04/2023]
Abstract
Ecabet sodium (ES) is currently applied to some clinical gastrointestinal disease primarily by the inhibition of the ROS production. In this study, the protective role of ES was evaluated against the neomycin-induced hair cell loss using zebrafish experimental animal model. Zebrafish larvae (5-7 dpf), were treated with each of the following concentrations of ES: 5, 10, 20, 40, and 80 μg/mL for 1 h, followed by 125 μM neomycin for 1h. The positive control group was established by 125 μM neomycin-only treatment (1h) and the negative control group with no additional chemicals was also established. Hair cells inside four neuromasts ( SO1, SO2, O1, OC1) were assessed using fluorescence microscopy (n = 10). Hair cell survival was calculated as the mean number of viable hair cells for each group. Apoptosis and mitochondrial damage were investigated using special staining (TUNEL and DASPEI assay, respectively), and compared among groups. Ultrastructural changes were evaluated using scanning electron microscopy. Pre-treatment group with ES increased the mean number of viable hair cells as a dose-dependent manner achieving almost same number of viable hair cells with 40 μM/ml ES treatment (12.98 ± 2.59 cells) comparing to that of the negative control group (14.15 ± 1.39 cells, p = 0.72) and significantly more number of viable hair cells than that of the positive control group (7.45 ± 0.91 cells, p < 0.01). The production of reactive oxygen species significantly increased by 183% with 125 μM neomycin treatment than the negative control group and significantly decreased down to 105% with the pre-treatment with 40 μM/ml ES (n = 40, p = 0.04). A significantly less number of TUNEL-positive cells (reflecting apoptosis, p < 0.01) and a significantly increased DASPEI reactivity (reflecting viable mitochondria, p < 0.01) were observed in 40 μM/ml ES pre-treatment group. Our data suggest that ES could protect against neomycin-induced hair cell loss possibly by reducing apoptosis, mitochondrial damages, and the ROS generation.
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Affiliation(s)
- Yoon Chan Rah
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University Ansan Hospital, Korea University, College of Medicine, Seoul, Republic of Korea
| | - June Choi
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University Ansan Hospital, Korea University, College of Medicine, Seoul, Republic of Korea.
| | - Myung Hoon Yoo
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University Ansan Hospital, Korea University, College of Medicine, Seoul, Republic of Korea
| | - Gunhwee Yum
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University Ansan Hospital, Korea University, College of Medicine, Seoul, Republic of Korea
| | - Saemi Park
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University Ansan Hospital, Korea University, College of Medicine, Seoul, Republic of Korea
| | - Kyoung Ho Oh
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University Ansan Hospital, Korea University, College of Medicine, Seoul, Republic of Korea
| | - Seung Hoon Lee
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University Ansan Hospital, Korea University, College of Medicine, Seoul, Republic of Korea
| | - Soon Young Kwon
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University Ansan Hospital, Korea University, College of Medicine, Seoul, Republic of Korea
| | | | - Suhyun Kim
- Laboratory of Neurodevelopmental Genetics, Graduate School of Medicine, Korea University, Seoul, Republic of Korea
| | - Hae-Chul Park
- Laboratory of Neurodevelopmental Genetics, Graduate School of Medicine, Korea University, Seoul, Republic of Korea
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Rah YC, Yoon YS, Chang MY, Lee JY, Suh MW, Lee JH, Oh SH, Chang SO, Park MK. Facial nerve stimulation in the narrow bony cochlear nerve canal after cochlear implantation. Laryngoscope 2015; 126:1433-9. [DOI: 10.1002/lary.25655] [Citation(s) in RCA: 7] [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] [Accepted: 08/13/2015] [Indexed: 11/12/2022]
Affiliation(s)
- Yoon Chan Rah
- Department of Otorhinolaryngology ; Seoul National University College of Medicine, Seoul National University Hospital; Seoul Republic of Korea
- Department of Otorhinolaryngology ; Korea University Ansan Hospital; Ansan Republic of Korea
| | - Young-sun Yoon
- Department of Otorhinolaryngology ; Seoul National University College of Medicine, Seoul National University Hospital; Seoul Republic of Korea
| | - Moon Young Chang
- Department of Otorhinolaryngology ; Seoul National University College of Medicine, Seoul National University Hospital; Seoul Republic of Korea
| | - Ji Young Lee
- Department of Otorhinolaryngology ; Seoul National University College of Medicine, Seoul National University Hospital; Seoul Republic of Korea
| | - Myung-Whan Suh
- Department of Otorhinolaryngology ; Seoul National University College of Medicine, Seoul National University Hospital; Seoul Republic of Korea
| | - Jun Ho Lee
- Department of Otorhinolaryngology ; Seoul National University College of Medicine, Seoul National University Hospital; Seoul Republic of Korea
| | - Seung-ha Oh
- Department of Otorhinolaryngology ; Seoul National University College of Medicine, Seoul National University Hospital; Seoul Republic of Korea
| | - Sun O. Chang
- Department of Otorhinolaryngology ; Seoul National University College of Medicine, Seoul National University Hospital; Seoul Republic of Korea
| | - Moo Kyun Park
- Department of Otorhinolaryngology ; Seoul National University College of Medicine, Seoul National University Hospital; Seoul Republic of Korea
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Choi J, Kim SH, Rah YC, Chae SW, Lee JD, Lee BD, Park MK. Effects of caffeic acid on cisplatin-induced hair cell damage in HEI-OC1 auditory cells. Int J Pediatr Otorhinolaryngol 2014; 78:2198-204. [PMID: 25458160 DOI: 10.1016/j.ijporl.2014.10.013] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/10/2014] [Revised: 09/22/2014] [Accepted: 10/10/2014] [Indexed: 10/24/2022]
Abstract
INTRODUCTION Cisplatin is a widely used anticancer chemotherapeutic agent. However, it is notorious for its ototoxicity and nephrotoxicity due to induction of reactive oxygen species (ROS). Caffeic acid is a naturally occurring polyphenol present in honey that is known to reduce the generation of oxygen-derived free radicals. The objective of the present study was to evaluate the protective effects and mechanism underlying the effect of caffeic acid on cisplatin-induced ototoxicity in HEI-OC1 auditory cell lines. METHODS Cell viability was measured using the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay. Apoptosis was determined by Hoechst 33258 staining and Annexin V-fluorescein isothiocyanate/propidium iodide double staining. Cell cycle stages were analyzed by flow cytometry. The radical-scavenging activity of caffeic acid was assessed using the 1,1-diphenyl-2-picrylhydrazyl (DPPH) assay. The expression levels of caspase-3, -8, and -9, as well as the activity of caspase-3, were evaluated. RESULTS Caffeic acid showed a protective effect against cisplatin-induced HEI-OC1 cell damage as demonstrated by the MTT assay. Caffeic acid decreased cell death by apoptosis and necrosis. Caffeic acid showed strong scavenging activity against the radical DPPH and decreased intracellular ROS production. Caffeic acid decreased the expression of caspase-3 and -8 and increased the activity of caspase-3. CONCLUSIONS Caffeic acid attenuated cisplatin-induced hair cell loss in HEI-OC1 cell lines; these effects were mediated by its radical scavenging activity and inhibition of apoptosis.
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Affiliation(s)
- June Choi
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Shin Hye Kim
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Yoon Chan Rah
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Sung Won Chae
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Jong Dae Lee
- Department of Otorhinolaryngology-Head and Neck Surgery, Soonchunhyang National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Byung Don Lee
- Department of Otorhinolaryngology-Head and Neck Surgery, Soonchunhyang National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Moo Kyun Park
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea.
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Jin YJ, Park J, Kim AR, Rah YC, Choi BY. Identification of a novel splice site variant of OTOF in the Korean nonsyndromic hearing loss population with low prevalence of the OTOF mutations. Int J Pediatr Otorhinolaryngol 2014; 78:1030-5. [PMID: 24814232 DOI: 10.1016/j.ijporl.2014.03.033] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/26/2013] [Revised: 03/26/2014] [Accepted: 03/28/2014] [Indexed: 12/15/2022]
Abstract
PURPOSE (1) To describe the frequency of the OTOF mutations among Korean ARNSHL (autosomal recessive nonsyndromic hearing loss) populations; (2) to report the vertical transmission of DFNB9 in a family, where two related DFNB9 patients in the family manifested a different audiological phenotype. METHOD We analyzed the prevalence of OTOF mutations among 71 Korean sporadic or possible ARNSHL pediatric patients, as well as among AN/AD (auditory neuropathy/auditory dys-synchrony) patients by direct PCR (polymerase chain reaction) sequencing or targeted resequencing of known deafness genes. RESULTS The AN/AD phenotype which was characterized by preservation of OAE (otoacoustic emission) was present in 5 (7%) of 71 probands, and the prevalence of OTOF mutations was calculated to be 20% (1/5) and 1.4% (1/71) among AN/AD patients and total sporadic/ARNSHL patients, respectively. PJVK mutations did not account for Non-DFNB9 AN/AD patients. To our interest, the only proband (SB4-11) with two OTOF mutant alleles in our cohort had deaf parents, who also turned out to be DFNB9. We identified a novel splice site variant of OTOF from the mother (SB4-13) of SB4-11. This was the first observation of vertical transmission of DFNB9 phenotype from parents to son in this population where the prevalence of OTOF is very low and consanguineous marriage is not allowed. Another DFNB9 patient (SB4-12), the father of SB4-11, carried a homozygous p.Y374X mutation that affected only the long isoform of OTOF and did not manifest AN/AD. CONCLUSION The OTOF mutations do not contribute significantly to Korean ARNSHL and AN/AD unlike in Japan and Taiwan. This low prevalence mandates a search for other etiologies. Our observation of the discordant audiologic phenotype within the same DFNB9 family is more likely due to the loss of OAE over time rather than a genotype-phenotype correlation.
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Affiliation(s)
- Young Ju Jin
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Jaehong Park
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Republic of Korea
| | - Ah Reum Kim
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Yoon Chan Rah
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Byung Yoon Choi
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Republic of Korea.
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Seok J, Kim H, Lee WY, Choi HG, Kim DW, Rah YC, Cha W, An SY, Jeong WJ, Hah JH, Ahn SH, Kwon TK, Sung MW, Kim KH. PP051. Oral Oncol 2013. [DOI: 10.1016/j.oraloncology.2013.03.294] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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