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Li X, Xu J. Correlation of Apo B/A1 ratio with hemodynamics and hearing impairment degree in elderly patients with sudden sensorineural hearing loss. Heliyon 2024; 10:e34100. [PMID: 39100471 PMCID: PMC11296018 DOI: 10.1016/j.heliyon.2024.e34100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2023] [Revised: 06/28/2024] [Accepted: 07/03/2024] [Indexed: 08/06/2024] Open
Abstract
Objective To investigate the correlation of apolipoprotein B/A1 (Apo B/A1) ratio with hemodynamics and degree of hearing impairment in elderly patients with sudden sensorineural hearing loss (SSNHL). Methods A total of 82 elderly patients with SSNHL diagnosed and treated in our hospital from July 2019 to September 2022 were retrospectively selected as the research group. The patients were divided into the mild group (22 cases), the moderate group (45 cases), and the severe group (15 cases) according to the degree of hearing impairment. 82 elderly people who underwent physical examination in our hospital during the same period were selected as the control group. The ApoB/A1 ratio and hemodynamic [whole blood low-shear viscosity (LSV), whole blood high-shear viscosity (HSV) and plasma viscosity (PV)] were measured in the two groups. The correlation of ApoB/A1 ratio with hemodynamics and degree of hearing impairment was analyzed. The predictive value of ApoB/A1 ratio and hemodynamics for the severity of SSNHL in elderly patients was analyzed. Results Compared with the control group, the ApoB/A1 ratio, and the levels of LSV, HSV and PV were higher in the research group (P < 0.001). The ApoB/A1 ratio and content of LSV, HSV and PV in the moderate group were significantly increased compared with these in the mild group (P < 0.05). Compared with the moderate group, the ApoB/A1 ratio and the levels of LSV, HSV and PV in the severe group were significantly increased (P < 0.05). Pearson correlation analysis showed that ApoB/A1 was positively correlated with LSV, HSV and PV (r = 0.303, 0.312, 0.228, P < 0.01). Logistic regression analysis showed that the ApoB/A1 ratio, LSV, HSV and PV levels were independent risk factors for the degree of hearing impairment in elderly patients with SSNHL (P < 0.05). The area under the curve (AUC) of ApoB/A1, LSV, HSV and PV for predicting the severity of SSNHL in elderly patients was 0.701, 0.817, 0.838, and 0.765, respectively. The AUC of combined prediction was 0.926, the sensitivity was 86.67 %, and the specificity was 90.06 %. The sensitivity and specificity of combined detection were higher than those of single detection. Conclusion The contents of ApoB/A1, HSV, LSV and PV were significantly increased in elderly patients with SSNHL, and their levels are significantly related to the degree of hearing impairment. The combined detection has high value in evaluating the severity of the disease.
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Affiliation(s)
- Xingcheng Li
- Department of Otology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, PR China
| | - Jing Xu
- Department of Otology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, PR China
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Chen X, Zheng Z, Liu X, Huang J, Xie D, Feng Y. Traditional and non-traditional lipid parameters as risk factors for sudden sensorineural hearing loss. Braz J Otorhinolaryngol 2024; 90:101435. [PMID: 38714080 PMCID: PMC11096716 DOI: 10.1016/j.bjorl.2024.101435] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2024] [Revised: 03/01/2024] [Accepted: 03/30/2024] [Indexed: 05/09/2024] Open
Abstract
OBJECTIVE The purpose was to explore the effects of traditional and non-traditional lipid parameters on Sudden Sensorineural Hearing Loss (SSNHL). METHODS The study included 452 patients diagnosed with SSNHL, among whom 206 patients had a level of hearing improvement ≥10 dB after one month of follow-up. A propensity score-matched (2:1) control group was used. Conditional and unconditional logistic regression were used to analyze the risk factors for SSNHL. RESULTS Patients with SSNHL had a higher risk of concomitant hypertension and elevated atherosclerogenic lipid levels, with apolipoprotein B and apolipoprotein E identified as independent risk factors for the onset of SSNHL. Additionally, the Lipid Comprehensive Index (LCI) was an independent risk factor for the degree of hearing loss. A positive linear correlation was revealed between triglyceride, non-high-density lipoprotein cholesterol, atherogenic index, Castelli risk index, atherogenic index of plasma, LCI and hearing loss. However, no linear relationship was observed between hearing gain and any lipid parameters. When Total Cholesterol (TC) was in the range of borderline high, the treatment effect was the best. However, the statistical significance disappeared upon adjusting for confounding factors. CONCLUSION Patients with SSNHL exhibited markedly dysregulated lipid metabolism. Elevated serum lipid levels may be a causative factor in auditory impairment and can influence the extent of hearing loss. Promptly improving cochlear microcirculation may benefit patients with borderline elevated TC. LEVEL OF EVIDENCE: 4
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Affiliation(s)
- Xiaoyan Chen
- Shanghai Jiao Tong University School of Medicine affiliated Sixth People's Hospital, Department of Otolaryngology-Head and Neck Surgery, Shanghai, China; Shanghai Key Laboratory of Sleep Disordered Breathing, Shanghai, China
| | - Zhong Zheng
- Shanghai Jiao Tong University School of Medicine affiliated Sixth People's Hospital, Department of Otolaryngology-Head and Neck Surgery, Shanghai, China; Shanghai Key Laboratory of Sleep Disordered Breathing, Shanghai, China
| | - Ximeng Liu
- Hangzhou Normal University, Zhejiang Province, China
| | - Jianuo Huang
- Hangzhou Normal University, Zhejiang Province, China
| | - Daoyu Xie
- Affiliated Hospital of Hangzhou Normal University, Department of Otolaryngology-Head and Neck Surgery, Zhejiang Province, China.
| | - Yanmei Feng
- Shanghai Jiao Tong University School of Medicine affiliated Sixth People's Hospital, Department of Otolaryngology-Head and Neck Surgery, Shanghai, China; Shanghai Key Laboratory of Sleep Disordered Breathing, Shanghai, China.
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Wang Y, Yao X, Wang D, Ye C, Xu L. A machine learning screening model for identifying the risk of high-frequency hearing impairment in a general population. BMC Public Health 2024; 24:1160. [PMID: 38664666 PMCID: PMC11044481 DOI: 10.1186/s12889-024-18636-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2023] [Accepted: 04/17/2024] [Indexed: 04/29/2024] Open
Abstract
BACKGROUND Hearing impairment (HI) has become a major public health issue in China. Currently, due to the limitations of primary health care, the gold standard for HI diagnosis (pure-tone hearing test) is not suitable for large-scale use in community settings. Therefore, the purpose of this study was to develop a cost-effective HI screening model for the general population using machine learning (ML) methods and data gathered from community-based scenarios, aiming to help improve the hearing-related health outcomes of community residents. METHODS This study recruited 3371 community residents from 7 health centres in Zhejiang, China. Sixty-eight indicators derived from questionnaire surveys and routine haematological tests were delivered and used for modelling. Seven commonly used ML models (the naive Bayes (NB), K-nearest neighbours (KNN), support vector machine (SVM), random forest (RF), eXtreme Gradient Boosting (XGBoost), boosting, and least absolute shrinkage and selection operator (LASSO regression)) were adopted and compared to develop the final high-frequency hearing impairment (HFHI) screening model for community residents. The model was constructed with a nomogram to obtain the risk score of the probability of individuals suffering from HFHI. According to the risk score, the population was divided into three risk stratifications (low, medium and high) and the risk factor characteristics of each dimension under different risk stratifications were identified. RESULTS Among all the algorithms used, the LASSO-based model achieved the best performance on the validation set by attaining an area under the curve (AUC) of 0.868 (95% confidence interval (CI): 0.847-0.889) and reaching precision, specificity and F-score values all greater than 80%. Five demographic indicators, 7 disease-related features, 5 behavioural factors, 2 environmental exposures, 2 hearing cognitive factors, and 13 blood test indicators were identified in the final screening model. A total of 91.42% (1235/1129) of the subjects in the high-risk group were confirmed to have HI by audiometry, which was 3.99 times greater than that in the low-risk group (22.91%, 301/1314). The high-risk population was mainly characterized as older, low-income and low-educated males, especially those with multiple chronic conditions, noise exposure, poor lifestyle, abnormal blood indices (e.g., red cell distribution width (RDW) and platelet distribution width (PDW)) and liver function indicators (e.g., triglyceride (TG), indirect bilirubin (IBIL), aspartate aminotransferase (AST) and low-density lipoprotein (LDL)). An HFHI nomogram was further generated to improve the operability of the screening model for community applications. CONCLUSIONS The HFHI risk screening model developed based on ML algorithms can more accurately identify residents with HFHI by categorizing them into the high-risk groups, which can further help to identify modifiable and immutable risk factors for residents at high risk of HI and promote their personalized HI prevention or intervention.
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Affiliation(s)
- Yi Wang
- Department of Epidemiology and Biostatistics, School of Public Health, Hangzhou Normal University, Hangzhou, 311121, Zhejiang, China
- Hangzhou Center for Disease Control and Prevention, Hangzhou, Zhejiang, China
| | - Xinmeng Yao
- Department of Epidemiology and Biostatistics, School of Public Health, Hangzhou Normal University, Hangzhou, 311121, Zhejiang, China
| | - Dahui Wang
- Department of Health Management, School of Public Health, Hangzhou Normal University, Hangzhou, Zhejiang, China
| | - Chengyin Ye
- Department of Health Management, School of Public Health, Hangzhou Normal University, Hangzhou, Zhejiang, China.
| | - Liangwen Xu
- Department of Epidemiology and Biostatistics, School of Public Health, Hangzhou Normal University, Hangzhou, 311121, Zhejiang, China.
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Saba ES, Swisher AR, Ansari GN, Rivero A. Cardiovascular Risk Factors in Patients With Sudden Sensorineural Hearing Loss: A Systematic Review and Meta-Analysis. Otolaryngol Head Neck Surg 2023; 168:907-921. [PMID: 36871179 DOI: 10.1002/ohn.163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 08/24/2022] [Accepted: 09/06/2022] [Indexed: 03/06/2023]
Abstract
OBJECTIVE The interruption of vascular supply to the inner ear is one of several proposed etiologies of sudden sensorineural hearing loss (SSNHL). The increased presence of cardiovascular risk factors may predispose patients to SSNHL through this pathway. This systematic review and meta-analysis studies the presence of cardiovascular risk factors in patients diagnosed with SSNHL. DATA SOURCES Databases included PubMed/Medline, OVID, EMBASE, Cochrane, and Web of Science. REVIEW METHODS Inclusion criteria included studies featuring SSNHL patients presenting with 1+ cardiovascular risk factors. Exclusion criteria included case reports and studies without outcome measures. Two investigators independently reviewed all manuscripts and performed quality assessments using validated tools. RESULTS Of 532 identified abstracts, 27 studies met inclusion criteria (19 case-control, 4 cohorts, 4 case series). Of these, 24 underwent meta-analysis encompassing a total of 77,566 patients (22,620 SSNHL patients, 54,946 matched controls). The mean age was 50.43 years. SSNHL patients were more likely to have concomitant diabetes (odds ratio [OR] 1.61 [95% confidence interval [CI]: 1.31, 1.99; p < .00001]) and hypertension (OR 1.5 [95% CI: 1.16, 1.94; p = .002]). An increased standard mean difference of total cholesterol of 11.09 mg/dL (95% CI; 3.51, 18.67; p = .004) was noted in the SSNHL group compared with the controls. No significant differences in smoking, high-density lipoprotein, triglycerides, or body mass index were detected. CONCLUSION Patients presenting with SSNHL have a significantly higher risk of concomitant diabetes, hypertension, and higher total cholesterol in comparison to matched controls. This may indicate a higher cardiovascular risk profile in this population. More prospective and matched cohort studies are needed to understand the role of cardiovascular risk factors in SSNHL.
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Affiliation(s)
- Elias S Saba
- Department of Head and Neck Surgery, Kaiser Permanente Oakland, Oakland, California, USA
| | | | - Ghedak N Ansari
- Department of Head and Neck Surgery, Kaiser Permanente Oakland, Oakland, California, USA
| | - Alexander Rivero
- Department of Head and Neck Surgery, Kaiser Permanente Oakland, Oakland, California, USA
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Huang J, Xu Y, Li L, Ai W. The relationship between serum lipid and sudden sensorineural hearing loss. Acta Otolaryngol 2023; 143:121-126. [PMID: 36811455 DOI: 10.1080/00016489.2023.2171114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2023]
Abstract
BACKGROUND Hyperlipidemia may be part of the important mechanisms for the development of idiopathic sudden sensorineural hearing loss (ISSNHL). AIMS So the purpose of this study was to evaluate the relationship between changes in blood lipid levels and ISSNHL. MATERIALS AND METHODS We enrolled 90 ISSNHL patients in our hospital using a retrospective study design from 2019.1 to 2021.12. Blood levels of total cholesterol (TC), triglycerides (TG), and low-density lipoprotein (LDL-C). Hearing recovery was analyzed using the chi-square test and one-way analysis of variance (ANONA). Univariate and multifactorial Logstic retrospective analyses to establish the relationship between LDL-C/HDL-C ratio and hearing recovery after adjustment for potential confounding factors. RESULTS In our study, 65 (72.2%) patients had their hearing recovered. All group analyses and three group analyses (i.e. Excluding the no-recovery group) found that LDL/HDL was on an upward trend from complete recovery to a slight recovery group and strongly associated with hearing recovery. Univariate and multivariate logistic regression analysis found high levels of LDL and LDL/HDL in the partial hearing recovery group, relative to the full hearing recovery group. Curve fitting intuitively demonstrates the influence of blood lipids on prognosis. CONCLUSIONS Our findings suggest that LDL. TC, TC/HDL, and LDL/HDL concentrations may be closely related to the pathogenesis of ISSNHL. SIGNIFICANCE Improving the relevant lipid test at the time of admission to the hospital has good clinical significance for improving the prognosis of ISSNHL.
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Affiliation(s)
- Jiaying Huang
- Department of Otolaryngology, the Hefei First people's Hospital, Hefei, Anhui, China
| | - Yongtian Xu
- Department of Otolaryngology, the Hefei First people's Hospital, Hefei, Anhui, China
| | - Ling Li
- Department of Otolaryngology, the Hefei First people's Hospital, Hefei, Anhui, China
| | - Wei Ai
- Department of Otolaryngology, the Hefei First people's Hospital, Hefei, Anhui, China
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Zhang S, Li P, Fan F, Zheng Y, Chen X, Chen Y, Cui X. Nomogram for predicting the prognosis of sudden sensorineural hearing loss patients based on clinical characteristics: a retrospective cohort study. ANNALS OF TRANSLATIONAL MEDICINE 2023; 11:104. [PMID: 36819585 PMCID: PMC9929828 DOI: 10.21037/atm-22-5647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Accepted: 12/19/2022] [Indexed: 02/03/2023]
Abstract
Background Based on the clinical characteristics of patients, a nomogram predicting the prognosis of patients suffering from sudden sensorineural hearing loss (SSNHL) was constructed, which could aid in personalized treatment. Methods Data on the clinical characteristics of patients with SSNHL were collected and statistically analyzed. A nomogram for predicting the hearing prognosis of SSNHL patients were then constructed. Results A total of 356 patients were included in this study, including 227 and 129 in the recovery group (63.76%) and non-recovery group (36.24%), respectively. Univariable logistic regression demonstrated that age, gender, body mass index (BMI), marital, Audiogram curve, vertigo, hearing loss degree, and time to initial treatment were associated with hearing outcomes. Multivariate logistic models showed that age [odds ratio (OR): 0.479, 95% confidence interval (CI): 0.301-0.748, P<0.001], descending (OR: 0.116, 95% CI: 0.047-0.275, P<0.001) and flat audiogram curves (OR: 0.397, 95% CI: 0.159-0.979, P=0.045), profound hearing loss (OR: 0.047, 95% CI: 0.013-0.152, P<0.001), and treatment initiation after 1 week (8-14 days: OR: 0.047, 95% CI: 0.013-0.152, P<0.001; >14 days: OR: 0.131, 95% CI: 0.039-0.413) were risk factors for the hearing recovery. Logistic regression analyses were conducted to construct the prognostic nomogram. As estimated by the area under the receiver operating characteristic curve (ROC), the model had an accuracy of 0.867 (95% CI: 0.709-0.747). The validation analysis confirmed the high accuracy of the nomogram, and the decision curve showed that the model has potential clinical application value. Conclusions This study demonstrated that age, descending and flat audiogram curves, profound hearing loss, and initiating treatment after 1 week of SSNHL onset were independent risk factors associated with a worse hearing recovery prognosis. Using these factors, a nomogram with a high prediction accuracy was developed to predict the hearing recovery rate of SSNHL patients.
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Wang Y, Xiong W, Sun X, Duan F, Lu K, Wang H, Wang M. Characteristics and prognostic analysis of simultaneous bilateral sudden sensorineural hearing loss. Front Neurol 2023; 14:1179579. [PMID: 37213906 PMCID: PMC10196351 DOI: 10.3389/fneur.2023.1179579] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2023] [Accepted: 04/19/2023] [Indexed: 05/23/2023] Open
Abstract
Objective To evaluate the clinical characteristics of simultaneous bilateral sudden sensorineural hearing loss (Si-BSSNHL) as well as its prognostic factors. Methods Patients with Si-BSSNHL who were admitted to the Department of Otology Medicine between December 2018 and December 2021 were enrolled in the case group. Propensity score matching (PSM) for sex and age was used to select the control group, which included people who had unilateral sudden sensorineural hearing loss (USSNHL) during the same time period. Hearing recovery, audiological examinations, vestibular function assessments, laboratory tests, and demographic and clinical manifestations were analyzed for intergroup comparisons. Binary logistic regressions were used for both univariate and multivariate analyses of Si-BSSNHL prognostic factors. Results Before PSM, the Si-BSSNHL and USSNHL groups differed significantly (p < 0.05) in terms of time from onset to treatment, initial pure-tone average (PTA), final PTA, hearing gain, audiogram curve type, proportion of tinnitus, high-density lipoprotein level, homocysteine level, and effective rate. After PSM, significant differences were also observed in time from onset to treatment, initial PTA, final PTA, hearing gain, total and indirect bilirubin levels, homocysteine level, and effective rate between the two groups (p < 0.05). There was a significant difference in the classification of therapeutic effects between the two groups (p < 0.001). For prognostic analysis, the audiogram curve type was significantly different between the effective group and the ineffective groups of Si-BSSNHL (p = 0.01), in which the sloping type was an independent risk factor for the prognosis of the right ear in Si-SSNHL (95% confidence interval, 0.006-0.549, p = 0.013). Conclusion Patients with Si-BSSNHL had mild deafness, elevated total and indirect bilirubin and homocysteine levels, and poorer prognosis than those with USSNHL. Audiogram curve type was linked to the therapeutic effect of Si-BSSNHL, and the sloping type was an independent risk factor for a poor prognosis in the right ear of Si-SSNHL.
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Affiliation(s)
- Yingjun Wang
- Department of Otology Medicine, Shandong Provincial ENT Hospital, Shandong University, Jinan, China
- Shandong Institution of Otolaryngology, Jinan, China
| | - Wenping Xiong
- Department of Otology Medicine, Shandong Provincial ENT Hospital, Shandong University, Jinan, China
- Shandong Institution of Otolaryngology, Jinan, China
| | - Xiao Sun
- Department of Otology Medicine, Shandong Provincial ENT Hospital, Shandong University, Jinan, China
| | - Fujia Duan
- Department of Otology Medicine, Shandong Provincial ENT Hospital, Shandong University, Jinan, China
| | - Kunpeng Lu
- Department of Otology Medicine, Shandong Provincial ENT Hospital, Shandong University, Jinan, China
| | - Haibo Wang
- Department of Otology Center, Shandong Provincial ENT Hospital, Shandong University, Jinan, China
| | - Mingming Wang
- Department of Otology Medicine, Shandong Provincial ENT Hospital, Shandong University, Jinan, China
- Shandong Institution of Otolaryngology, Jinan, China
- *Correspondence: Mingming Wang,
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The value of inflammatory biomarkers in the occurrence and prognosis of sudden sensorineural hearing loss: a meta-analysis. Eur Arch Otorhinolaryngol 2022; 280:3119-3129. [DOI: 10.1007/s00405-022-07806-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Accepted: 12/19/2022] [Indexed: 12/28/2022]
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Yamada S, Kita J, Shinmura D, Nakamura Y, Sahara S, Misawa K, Nakanishi H. Update on Findings about Sudden Sensorineural Hearing Loss and Insight into Its Pathogenesis. J Clin Med 2022; 11:6387. [PMID: 36362614 PMCID: PMC9653771 DOI: 10.3390/jcm11216387] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Revised: 10/17/2022] [Accepted: 10/27/2022] [Indexed: 07/26/2023] Open
Abstract
Sudden sensorineural hearing loss (SSNHL) is routinely encountered and is one of the most common emergent diseases in otolaryngology clinics. However, the etiology of SSNHL remains unclear. Due to the inaccessibility of the living human inner ear for biopsy, studies investigating the etiology of SSNHL have been performed by analyzing data obtained from examinations using peripheral blood or imaging. We updated the findings obtained from serological, magnetic resonance imaging, genetic, and viral examinations to reveal the etiology of SSNHL. Regarding viral examination, we focused on sensorineural hearing loss associated with coronavirus disease (COVID-19) because the number of correlated reports has been increasing after the outbreak. The updated findings revealed the following three possible mechanisms underlying the development of SSNHL: thrombosis and resulting vascular obstruction in the cochlea, asymptomatic viral infection and resulting damage to the cochlea, and cochlear inflammation and resulting damage to the cochlea. Thrombosis and viral infection are predominant, and cochlear inflammation can be secondarily induced through viral infection or even thrombosis. The findings about sensorineural hearing loss associated with COVID-19 supported the possibility that asymptomatic viral infection is one of the etiologies of SSNHL, and the virus can infect inner ear tissues and directly damage them.
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Affiliation(s)
- Satoshi Yamada
- Department of Otorhinolaryngology/Head & Neck Surgery, Hamamatsu University School of Medicine, Hamamatsu 431-3192, Japan
| | - Junya Kita
- Department of Otorhinolaryngology/Head & Neck Surgery, Hamamatsu University School of Medicine, Hamamatsu 431-3192, Japan
| | - Daichi Shinmura
- Department of Otorhinolaryngology/Head & Neck Surgery, Hamamatsu University School of Medicine, Hamamatsu 431-3192, Japan
| | - Yuki Nakamura
- Department of Otorhinolaryngology/Head & Neck Surgery, Hamamatsu University School of Medicine, Hamamatsu 431-3192, Japan
| | - Sosuke Sahara
- Department of Otorhinolaryngology/Head & Neck Surgery, Hamamatsu University School of Medicine, Hamamatsu 431-3192, Japan
- Department of Otorhinolaryngology, Numazu City Hospital, Numazu 410-0302, Japan
| | - Kiyoshi Misawa
- Department of Otorhinolaryngology/Head & Neck Surgery, Hamamatsu University School of Medicine, Hamamatsu 431-3192, Japan
| | - Hiroshi Nakanishi
- Department of Otorhinolaryngology/Head & Neck Surgery, Hamamatsu University School of Medicine, Hamamatsu 431-3192, Japan
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Chen L, Wang Y, Gao X, Xiong W, Duan F, Zhang N, Wang H, Wang M. Thromboelastography Predicting the Prognosis of Sudden Sensorineural Hearing Loss. Clin Otolaryngol 2022; 47:724-731. [PMID: 35818895 DOI: 10.1111/coa.13959] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Revised: 05/24/2022] [Accepted: 06/12/2022] [Indexed: 11/30/2022]
Abstract
OBJECTIVES To explore the association between thromboelastography and the clinical features as well as the prognosis of sudden sensorineural hearing loss (SSNHL). DESIGN Single-centre, retrospective study. SETTING A hospital in China PARTICIPANTS: In total, 133 patients presenting with SSNHL within 2 weeks before the study, who did not receive treatment. MAIN OUTCOME MEASURES The patients' medical history was collected. Audiological, imaging, and haematological examinations were performed before treatment. Patients with abnormal thromboelastography were re-examined 1 week after treatment, and efficacy was evaluated 1 month after treatment. The chi-squared test and binary logistic regression analysis were used to analyse the association between factors, such as vertigo, degree and type of hearing loss, vestibular function, inner ear MRI results, thromboelastography, and efficacy of treatment. RESULTS Thromboelastography was correlated with prognosis (P=0.049) and degree (P=0.030) and type of hearing loss (P=0.013) in patients with SSNHL. The R (P=0.002) and angle values (P=0.010) correlated with prognosis. The MA (P=0.022) and G values (P=0.020) correlated with the degree of hearing loss. The R (P=0.033) value correlated with inner ear MRI results, and the ΔG (P=0.010) value correlated with fibrinogen levels. ΔThromboelastography (P=0.032) was correlated with the prognosis of patients with abnormal thromboelastography results. Logistic regression analysis showed that thromboelastography correlated with prognosis (P=0.013), and Δthromboelastography correlated with the prognosis of patients with abnormal thromboelastography results (P=0.013) and vertigo (P=0.016). CONCLUSION Thromboelastography is an independent risk factor affecting the prognosis of SSNHL with the R and angle values playing a major role.
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Affiliation(s)
- Lei Chen
- Department of Otolaryngology Head and Neck Surgery, Shandong Provincial ENT Hospital, Cheeloo College of Medicine, Shandong University, Jinan250022, P.R. China.,Department of Otology Medicine, Shandong Provincial ENT Hospital, Jinan, China
| | - Yingjun Wang
- Department of Otolaryngology Head and Neck Surgery, Shandong Provincial ENT Hospital, Cheeloo College of Medicine, Shandong University, Jinan250022, P.R. China.,Department of Otology Medicine, Shandong Provincial ENT Hospital, Jinan, China
| | - Xin Gao
- Department of Otolaryngology Head and Neck Surgery, Shandong Provincial ENT Hospital, Cheeloo College of Medicine, Shandong University, Jinan250022, P.R. China.,Department of Otology Medicine, Shandong Provincial ENT Hospital, Jinan, China
| | - Wenping Xiong
- Department of Otolaryngology Head and Neck Surgery, Shandong Provincial ENT Hospital, Cheeloo College of Medicine, Shandong University, Jinan250022, P.R. China.,Department of Otology Medicine, Shandong Provincial ENT Hospital, Jinan, China
| | - Fujia Duan
- Department of Otolaryngology Head and Neck Surgery, Shandong Provincial ENT Hospital, Cheeloo College of Medicine, Shandong University, Jinan250022, P.R. China.,Department of Otology Medicine, Shandong Provincial ENT Hospital, Jinan, China
| | - Na Zhang
- Department of Otolaryngology Head and Neck Surgery, Shandong Provincial ENT Hospital, Cheeloo College of Medicine, Shandong University, Jinan250022, P.R. China
| | - Haibo Wang
- Department of Otolaryngology Head and Neck Surgery, Shandong Provincial ENT Hospital, Cheeloo College of Medicine, Shandong University, Jinan250022, P.R. China
| | - Mingming Wang
- Department of Otolaryngology Head and Neck Surgery, Shandong Provincial ENT Hospital, Cheeloo College of Medicine, Shandong University, Jinan250022, P.R. China.,Department of Otology Medicine, Shandong Provincial ENT Hospital, Jinan, China
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LDLR expression in the cochlea suggests a role in endolymph homeostasis and cochlear amplification. Hear Res 2021; 409:108311. [PMID: 34311268 DOI: 10.1016/j.heares.2021.108311] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Revised: 06/22/2021] [Accepted: 07/08/2021] [Indexed: 11/23/2022]
Abstract
There is now growing evidence that hypercholesterolemia and high serum levels of low-density lipoproteins (LDL) predispose to sensorineural hearing loss. Circulating LDL-cholesterol is delivered to peripheral tissues via LDL receptor (LDLR) -mediated endocytosis. Recently, it has been shown that LDLR gene polymorphisms are associated with higher susceptibility to sudden deafness. These findings suggested that we should investigate the expression of LDLR from the postnatal maturation of the mouse cochlea until adulthood. In the cochlea of newborn mice, we observed that LDLR is mostly expressed in the lateral wall of the cochlea, especially in a band of cells directly facing the cochlear duct. Moreover, LDLR is expressed in the inner and outer hair cells, as well as in the adjacent greater epithelial ridge. In early postnatal stages, LDLR is expressed in the marginal cells of the immature stria vascularis, in the root cells of the spiral ligament, and in the adjacent outer sulcus cells. At the same time, LDLR begins to be expressed in the pillar cells of the immature organ of Corti. From the onset of hearing, LDLR is expressed in the marginal cells of the stria vascularis, in the outer sulcus cells, and in the capillaries of the adjacent spiral ligament. In the organ of Corti, LDLR is expressed in outer pillar cells and Deiters' cells, i.e. in the non-sensory supporting cells that directly surround the outer hair cells. These cells are believed to provide a mechanical coupling with the outer hair cells to modulate electromotility and cochlear amplification. In the stria vascularis of three-month-old mice, LDLR is further expressed in both marginal and intermediate cells. Overall, our results suggest that LDLR is mostly present in cochlear cells that are involved in endolymph homeostasis and cochlear amplification. Further functional studies will be needed to unravel how LDLR regulates extracellular and intracellular levels of cholesterol and lipoproteins in the cochlea, and how it could influence cochlear homeostasis.
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