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Pavlidis P, Tseriotis VS, Papadopoulou K, Karachrysafi S, Sardeli C, Gouveris H, Malliou F, Kavvadas D, Papamitsou T, Sioga A, Anastasiadou P, Kouvelas D. Role of Memantine in Limiting Cochleotoxicity in Rats. Indian J Otolaryngol Head Neck Surg 2024; 76:2464-2473. [PMID: 38883494 PMCID: PMC11169147 DOI: 10.1007/s12070-024-04521-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Accepted: 01/08/2024] [Indexed: 06/18/2024] Open
Abstract
Οur aim was to test whether amikacin's well-known cochleotoxic effects could be suppressed, depending on whether an NMDA-antagonist (memantine) was administered simultaneously with or after amikacin treatment. Forty Wistar rats were used in this experiment. Ten rats acted as controls and received no medication (group A). Amikacin (200 mg/kg) was administered intraperitoneally (i.p.) once daily for 14 days to 10 animals in group B; amikacin (200 mg/kg) was administered concurrently with memantine (10 mg/kg, i.p., once daily) to the same 10 animals in group C. Group D was given intraperitoneal memantine (10 mg/kg, once daily) for 14 days following a 2-week amikacin treatment. The cochlear activity of the right ear was tested using DPOAE in conscious animals. All animals were sacrificed at the conclusion of the experiment and both cochleae were collected for histological and immunohistochemical analysis. All groups treated with amikacin showed decreased cochlear activity, as testified by decreased DPOAE-amplitudes compared to the pre-treatment state. In the rats of group B, the DPOAE reduction was more pronounced. On histologic exam, the cochlear structures of group C rats and, although to a lesser extent, group D rats showed less severe cochlea damage. Memantine plays a protective role, resulting in restoring partially cochlear structures when administered either simultaneously with or after completion of amikacin i.p. treatment in rats.
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Affiliation(s)
- Pavlos Pavlidis
- Department of Otorhinolarhingology / Head & Neck Surgery, University Medical Center Mainz, Mainz, Germany
- Laboratory for Clinical Pharmacology, School of Medicine, Faculty of Health Sciences, Aristotle University Thessaloniki, Thessaloniki, Greece
| | - Vasilis Spyridon Tseriotis
- Laboratory for Clinical Pharmacology, School of Medicine, Faculty of Health Sciences, Aristotle University Thessaloniki, Thessaloniki, Greece
| | - Kyriaki Papadopoulou
- Laboratory of Histology-Embryology, School of Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Sophia Karachrysafi
- Laboratory of Histology-Embryology, School of Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Chrysanthi Sardeli
- Laboratory for Clinical Pharmacology, School of Medicine, Faculty of Health Sciences, Aristotle University Thessaloniki, Thessaloniki, Greece
| | - Haralampos Gouveris
- Department of Otorhinolarhingology / Head & Neck Surgery, University Medical Center Mainz, Mainz, Germany
| | - Faye Malliou
- Laboratory for Clinical Pharmacology, School of Medicine, Faculty of Health Sciences, Aristotle University Thessaloniki, Thessaloniki, Greece
| | - Dimitrios Kavvadas
- Laboratory of Histology-Embryology, School of Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Theodora Papamitsou
- Laboratory of Histology-Embryology, School of Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Antonia Sioga
- Laboratory of Histology-Embryology, School of Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Penelope Anastasiadou
- Department of Oral Medicine/Pathology, School of Dentistry, Faculty of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Dimitrios Kouvelas
- Laboratory for Clinical Pharmacology, School of Medicine, Faculty of Health Sciences, Aristotle University Thessaloniki, Thessaloniki, Greece
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Wagle SR, Kovacevic B, Ionescu CM, Foster T, Jones M, Mikov M, Wise A, Mooranian A, Al-Salami H. Probucol-bile acid based nanoparticles protect auditory cells from oxidative stress: an in vitro study. Ther Deliv 2024; 15:237-252. [PMID: 38469721 DOI: 10.4155/tde-2023-0099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/13/2024] Open
Abstract
Aim: Excessive free radicals contribute to oxidative stress and mitochondrial dysfunction in sensorineural hearing loss (SNHL). The antioxidant probucol holds promise, but its limited bioavailability and inner ear barriers hinder effective SNHL treatment. Methodology: We addressed this by developing probucol-loaded nanoparticles with polymers and lithocholic acid and tested them on House Ear Institute-Organ of Corti cells. Results: Probucol-based nanoparticles effectively reduced oxidative stress-induced apoptosis, enhanced cellular viability, improved probucol uptake and promoted mitochondrial function. Additionally, they demonstrated the capacity to reduce reactive oxygen species through the nuclear factor erythroid 2-related factor 2/heme oxygenase-1 pathway. Conclusion: This innovative nanoparticle system holds the potential to prevent oxidative stress-related hearing impairment, providing an effective solution for SNHL.
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Affiliation(s)
- Susbin Raj Wagle
- The Biotechnology & Drug Development Research Laboratory, Curtin Medical School & Curtin Health Innovation Research Institute, Curtin University, Bentley 6102, Perth, Western Australia, Australia
| | - Bozica Kovacevic
- The Biotechnology & Drug Development Research Laboratory, Curtin Medical School & Curtin Health Innovation Research Institute, Curtin University, Bentley 6102, Perth, Western Australia, Australia
| | - Corina Mihaela Ionescu
- The Biotechnology & Drug Development Research Laboratory, Curtin Medical School & Curtin Health Innovation Research Institute, Curtin University, Bentley 6102, Perth, Western Australia, Australia
| | - Thomas Foster
- The Biotechnology & Drug Development Research Laboratory, Curtin Medical School & Curtin Health Innovation Research Institute, Curtin University, Bentley 6102, Perth, Western Australia, Australia
| | - Melissa Jones
- The Biotechnology & Drug Development Research Laboratory, Curtin Medical School & Curtin Health Innovation Research Institute, Curtin University, Bentley 6102, Perth, Western Australia, Australia
| | - Momir Mikov
- Department of Pharmacology, Toxicology & Clinical Pharmacology, Faculty of Medicine, University of Novi Sad, Novi Sad (Hajduk Veljkova 3, 21101), Serbia
| | | | - Armin Mooranian
- The Biotechnology & Drug Development Research Laboratory, Curtin Medical School & Curtin Health Innovation Research Institute, Curtin University, Bentley 6102, Perth, Western Australia, Australia
- School of Pharmacy, University of Otago, Dunedin, Otago, New Zealand
| | - Hani Al-Salami
- The Biotechnology & Drug Development Research Laboratory, Curtin Medical School & Curtin Health Innovation Research Institute, Curtin University, Bentley 6102, Perth, Western Australia, Australia
- Medical School, University of Western Australia, Perth, Western Australia, Australia
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Mishra UP, Behera G, Sahoo AK, Mishra S, Patnaik R. The Impact of Diabetes Mellitus on Sensorineural Hearing Loss: A Cross-Sectional Study in Eastern India. Cureus 2024; 16:e52431. [PMID: 38371046 PMCID: PMC10869999 DOI: 10.7759/cureus.52431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/17/2024] [Indexed: 02/20/2024] Open
Abstract
Objective Hearing loss as a comorbidity of type 2 diabetes mellitus (type 2 DM) is frequently overlooked by patients and healthcare professionals because of a lack of awareness. This cross-sectional study aims to investigate the impact of DM on sensorineural hearing loss (SNHL) in the population of Eastern India. The primary objectives are to assess the prevalence and severity of SNHL among individuals with DM, explore demographic and clinical factors associated with hearing impairment, and contribute valuable insights to the understanding of this relationship in a specific regional context. Methods An institutional-based cross-sectional study was conducted on 198 patients with type 2 DM. Of these, 46 patients were excluded based on exclusion criteria. All patients underwent detailed demographic and clinical assessments, including glycemic control, DM duration, and associated complications. Pure tone audiometry was used to evaluate hearing thresholds. Otoacoustic emission testing was performed to assess cochlear dysfunction. Results A high prevalence of SNHL (70.4%) was observed among the 152 participants meeting the inclusion criteria. Females exhibited a higher prevalence than males, and most participants experienced mild SNHL. Rural residence, lower socioeconomic status, and poor glycemic control were associated with increased SNHL. Significant associations were found between hearing loss severity and DM duration, glycosylated hemoglobin (HbA1c) levels, and complications. Among complications, a strong association was noted with diabetic neuropathy. No significant association was observed with the presence or absence of otoacoustic-emission. Conclusion This study reveals a substantial impact of DM on SNHL in Eastern India, emphasizing the importance of routine hearing assessments in diabetic populations. The findings contribute to regional understanding and have implications for targeted healthcare interventions and preventive strategies.
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Affiliation(s)
- Utkal P Mishra
- Department of Otolaryngology - Head and Neck Surgery, All India Institute of Medical Sciences, Bhopal, Bhopal, IND
| | - Ganakalyan Behera
- Department of Otolaryngology - Head and Neck Surgery, All India Institute of Medical Sciences, Bhopal, Bhopal, IND
| | - Anjan K Sahoo
- Department of Otolaryngology - Head and Neck Surgery, All India Institute of Medical Sciences, Bhopal, Bhopal, IND
| | - Satyajit Mishra
- Department of Otolaryngology - Head and Neck Surgery, Bhima Bhoi Medical College and Hospital, Balangir, Balangir, IND
| | - Radhakant Patnaik
- Department of Otolaryngology - Head and Neck Surgery, Veer Surendra Sai Institute of Medical Sciences and Research, Burla, IND
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Gioacchini FM, Pisani D, Viola P, Astorina A, Scarpa A, Libonati FA, Tulli M, Re M, Chiarella G. Diabetes Mellitus and Hearing Loss: A Complex Relationship. MEDICINA (KAUNAS, LITHUANIA) 2023; 59:medicina59020269. [PMID: 36837470 PMCID: PMC9959034 DOI: 10.3390/medicina59020269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Revised: 01/18/2023] [Accepted: 01/26/2023] [Indexed: 02/03/2023]
Abstract
Background and Objectives: Discussion is open about the relationship between diabetes (DM) and hearing loss (HL). There is a lot of evidence in the literature suggesting a causal link between these conditions, beyond being considered simple comorbidities. The difficulty in identifying populations free from confounding factors makes it difficult to reach definitive conclusions on the pathophysiological mechanisms at play. Nonetheless, there is numerous evidence that demonstrates how the population affected by DM is more affected by sensorineural HL (SNHL) and exhibit a higher prevalence of idiopathic sudden sensorineural HL (ISSNHL). Materials and Methods: Articles reporting potentially relevant information were reviewed, and the most significant results are discussed in this article. Starting from the possible mechanisms relating to auditory impairment in the diabetic condition, this article summarizes the studies on auditory evaluation in subjects with DM1 and DM2 and addresses the relationship between DM and ISSNHL. Results: DM is considered a risk factor for SNHL, although some studies have reported no relationship when the associations were adjusted for age, gender, and hypertension. Macro and microvascular insults that cause decreased blood flow, oxygen exchange, and ion transport are major complications of hypertension and DM and can have a direct effect on the sensory and support cells of the cochlea. Conclusions: Given the difficulty of carrying out studies on populations without confounding factors, new laboratory studies are strongly required to clarify which specific physiopathological mechanisms underlie the diabetic damage caused to the hearing organs and how pharmacological management may contribute to counteracting the pathophysiological effects of the diabetic condition on the auditory system.
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Affiliation(s)
- Federico Maria Gioacchini
- ENT Unit, Department of Clinical and Molecular Sciences, Polytechnic University of Marche, 60121 Ancona, Italy
| | - Davide Pisani
- Unit of Audiology, Regional Centre of Cochlear Implants and ENT Diseases, Department of Experimental and Clinical Medicine, Magna Graecia University, 88100 Catanzaro, Italy
| | - Pasquale Viola
- Unit of Audiology, Regional Centre of Cochlear Implants and ENT Diseases, Department of Experimental and Clinical Medicine, Magna Graecia University, 88100 Catanzaro, Italy
- Correspondence: ; Tel.: +39-096-1364-7124
| | - Alessia Astorina
- Unit of Audiology, Regional Centre of Cochlear Implants and ENT Diseases, Department of Experimental and Clinical Medicine, Magna Graecia University, 88100 Catanzaro, Italy
| | - Alfonso Scarpa
- Department of Medicine and Surgery, University of Salerno, 84084 Fisciano, Italy
| | | | - Michele Tulli
- ENT Unit, Department of Clinical and Molecular Sciences, Polytechnic University of Marche, 60121 Ancona, Italy
| | - Massimo Re
- ENT Unit, Department of Clinical and Molecular Sciences, Polytechnic University of Marche, 60121 Ancona, Italy
| | - Giuseppe Chiarella
- Unit of Audiology, Regional Centre of Cochlear Implants and ENT Diseases, Department of Experimental and Clinical Medicine, Magna Graecia University, 88100 Catanzaro, Italy
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Horváth M, Herold Z, Küstel M, Tamás L, Prekopp P, Somogyi A, Gáborján A. Changes in the cochlear and retrocochlear parts of the auditory system in 19-39 and 40-60 years old patients with type 1 diabetes mellitus. PLoS One 2023; 18:e0285740. [PMID: 37205672 DOI: 10.1371/journal.pone.0285740] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Accepted: 04/30/2023] [Indexed: 05/21/2023] Open
Abstract
Pathophysiological alterations in the cochlea and functional tests of the auditory pathway support that in diabetes both vasculopathy and neural changes could be present. The aim of our research was to study the differential effect of type 1 diabetes mellitus (T1DM) on two different age groups. Audiological investigation was carried out in 42 patients and 25 controls at the same age groups. Investigation of the conductive and sensorineural part of the hearing system by pure tone audiometry, distortion product otoacoustic emission measurement and acoustically evoked brainstem response registration were evaluated. Among the 19-39-year-old people the incidence of hearing impairment was not different in the diabetes and control groups. Among the 40-60-year-old people hearing impairment was more common in the diabetes group (75%) than in the control group (15,4%). Among patients with type 1 diabetes, the mean threshold values were higher in both age groups at all frequencies although significant difference was in 19-39 years old group: 500-4000Hz right ear, 4000Hz left ear, in 40-60 years old group: 4000-8000 Hz both ears. In the 19-39 years old diabetes group only at 8000 Hertz on the left side was a significant (p<0,05) difference in otoacoustic emissions. In the 40-60 years old diabetes group significantly less otoacoustic emissions at 8000 Hz on the right side (p<0,01) and at 4000-6000-8000 Hertz on the left side, (p<0,05, p<0,01, p<0,05 respectively) was present compared to the control group. According to ABR (auditory brainstem response) latencies and wave morphologies, a possible retrocochlear lesion arose in 15% of the 19-39 years old and 25% of the 40-60 years old diabetes group. According to our results, T1DM affects negatively the cochlear function and the neural part of the hearing system. The alterations are more and more detectable with aging.
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Affiliation(s)
- Mihály Horváth
- Department of Otorhinolaryngology, Head- and Neck Surgery, Semmelweis University, Budapest, Hungary
| | - Zoltán Herold
- Department of Internal Medicine and Oncology, Division of Oncology, Semmelweis University, Budapest, Hungary
| | - Marianna Küstel
- Department of Otorhinolaryngology, Head- and Neck Surgery, Semmelweis University, Budapest, Hungary
| | - László Tamás
- Department of Otorhinolaryngology, Head- and Neck Surgery, Semmelweis University, Budapest, Hungary
- Department of Voice, Speech and Swallowing Therapy, Faculty of Health Sciences, Semmelweis University, Budapest, Hungary
| | - Péter Prekopp
- Department of Otorhinolaryngology, Head- and Neck Surgery, Semmelweis University, Budapest, Hungary
| | - Anikó Somogyi
- Department of Internal Medicine and Hematology, Semmelweis University, Budapest, Hungary
| | - Anita Gáborján
- Department of Otorhinolaryngology, Head- and Neck Surgery, Semmelweis University, Budapest, Hungary
- Department of Voice, Speech and Swallowing Therapy, Faculty of Health Sciences, Semmelweis University, Budapest, Hungary
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Alshehri S, Pavlovič T, Farsinejad S, Behboodi P, Quan L, Centeno D, Kung D, Rezler M, Lee W, Jasiński P, Dziabaszewska E, Nowak-Markwitz E, Kalyon D, Zaborowski MP, Iwanicki M. Extracellular Matrix Modulates Outgrowth Dynamics in Ovarian Cancer. Adv Biol (Weinh) 2022; 6:e2200197. [PMID: 36084257 PMCID: PMC9772079 DOI: 10.1002/adbi.202200197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Revised: 08/18/2022] [Indexed: 01/28/2023]
Abstract
Ovarian carcinoma (OC) forms outgrowths that extend from the outer surface of an afflicted organ into the peritoneum. OC outgrowth formation is poorly understood due to the limited availability of cell culture models examining the behavior of cells that form outgrowths. Prompted by immunochemical evaluation of extracellular matrix (ECM) components in human tissues, laminin and collagen-rich ECM-reconstituted cell culture models amenable to studies of cell clusters that can form outgrowths are developed. It is demonstrated that ECM promotes outgrowth formation in fallopian tube non-ciliated epithelial cells (FNE) expressing mutant p53 and various OC cell lines. Outgrowths are initiated by cells that underwent outward translocation and retained the ability to intercalate into mesothelial cell monolayers. Electron microscopy, optical coherence tomography, and small amplitude oscillatory shear experiments reveal that increased ECM levels led to increased fibrous network thickness and high shear elasticity of the microenvironment. These physical characteristics are associated with outgrowth suppression. The low ECM microenvironment mimicks the viscoelasticity of malignant peritoneal fluid (ascites) and supports cell proliferation, cell translocation, and outgrowth formation. These results highlight the importance of the ECM microenvironment in modulating OC growth and can provide additional insights into the mode of dissemination of primary and recurrent ovarian tumors.
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Affiliation(s)
- Sarah Alshehri
- Department of Chemistry and Chemical Biology, Stevens Institute of Technology, Hoboken, USA
| | - Tonja Pavlovič
- Department of Chemistry and Chemical Biology, Stevens Institute of Technology, Hoboken, USA
| | - Sadaf Farsinejad
- Department of Chemistry and Chemical Biology, Stevens Institute of Technology, Hoboken, USA
| | - Panteha Behboodi
- Department of Chemical Engineering, Stevens Institute of Technology, Hoboken, USA
| | - Li Quan
- Department of Chemical Engineering, Stevens Institute of Technology, Hoboken, USA
| | - Daniel Centeno
- Department of Chemistry and Chemical Biology, Stevens Institute of Technology, Hoboken, USA
| | - Douglas Kung
- Department of Chemistry and Chemical Biology, Stevens Institute of Technology, Hoboken, USA
| | - Marta Rezler
- Poznań University of Medical Sciences, Poznań, Poland
| | - Woo Lee
- Department of Chemistry and Chemical Biology, Stevens Institute of Technology, Hoboken, USA
- Department of Chemical Engineering, Stevens Institute of Technology, Hoboken, USA
| | - Piotr Jasiński
- Department of Pathology, Poznań University of Medical Sciences, Poznań, Poland
| | | | - Ewa Nowak-Markwitz
- Department of Gynecology, Obstetrics and Gynecologic Oncology, Division of Gynecologic Oncology, Poznań University of Medical Sciences, Poznań, Poland
| | - Dilhan Kalyon
- Department of Chemical Engineering, Stevens Institute of Technology, Hoboken, USA
| | - Mikołaj P. Zaborowski
- Department of Gynecology, Obstetrics and Gynecologic Oncology, Division of Gynecologic Oncology, Poznań University of Medical Sciences, Poznań, Poland
| | - Marcin Iwanicki
- Department of Chemistry and Chemical Biology, Stevens Institute of Technology, Hoboken, USA
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Nguyen PTT, Song H, Kim B, Kim YY, Kim C, Lee JH, Suh JG. Age-related hearing loss was accelerated by apoptosis of spiral ganglion and stria vascularis cells in ApoE KO mice with hyperglycemia and hyperlipidemia. Front Neurol 2022; 13:1016654. [PMID: 36408520 PMCID: PMC9669308 DOI: 10.3389/fneur.2022.1016654] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Accepted: 10/10/2022] [Indexed: 11/06/2022] Open
Abstract
Age-related hearing loss (ARHL) is associated with diabetes and/or dyslipidemia in humans. However, the detailed mechanism for the development of ARHL by diabetes and/or dyslipidemia has not been elucidated. In this study, we investigated the etiology of ARHL in apolipoprotein E (ApoE)-deficient mice with diabetes and dyslipidemia. The atherosclerotic CD-STZ (mice fed with a control diet and received an STZ injection), WD-con (mice fed with a western diet), and WD-STZ (mice fed with a western diet and received an STZ injection) mice showed a 2.4-, 4.9-, and 6.8-fold larger area, respectively, occupied by lesions throughout the aorta compared with the CD-con mice. A significantly larger area under the curve (AUC) was observed in the STZ-treated groups than in the non-treated groups based on the oral glucose tolerance test (OGTT). At 20 weeks of age, HbA1c levels were significantly higher in the CD-STZ and WD-STZ mice than in the CD-con and WD-con mice. In all the groups, the auditory brainstem response (ABR) thresholds of the 16-week-old mice were significantly higher compared with those of the 8-week-old mice. In particular, in the WD-STZ mice, the ABR thresholds of the left and right ears reached the maximum decibel peak equivalent sound pressure levels (130 dBpeSPL), which is a sign of deafness. The apoptotic spiral ganglion neurons (SGNs) of the WD-STZ mice were significantly increased compared with those of the other three groups, indicating that SGN apoptosis resulted in hearing loss in STZ-induced diabetic ApoE KO mice fed with a WD. A significant loss of the stria vascularis cells was observed in the WD-STZ group compared with the CD-con mice. In the organ of Corti, few apoptotic hair cells were found in all the groups; however, no significant difference was observed. Therefore, we consider that the reduced hearing ability in the STZ-treated and WD-fed groups was attributed to the damage to the SGN and stria vascularis in the cochlea. Thus, our results indicated that ototoxicity by diabetes and/or dyslipidemia accelerated ARHL in ApoE KO mice, thereby suggesting the importance of appropriate treatment of patients with diabetes and/or dyslipidemia to prevent ARHL.
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Affiliation(s)
- Phuong Thi Thanh Nguyen
- Department of Medical Genetics, College of Medicine, Hallym University, Chuncheon, South Korea
| | - Hayoung Song
- Institute of New Frontier Research, Hallym University College of Medicine, Chuncheon, South Korea
| | - Boyoung Kim
- Department of Medical Genetics, College of Medicine, Hallym University, Chuncheon, South Korea
| | - Yoo Yeon Kim
- Department of Medical Genetics, College of Medicine, Hallym University, Chuncheon, South Korea
| | - Chulho Kim
- Department of Neurology, Chuncheon Sacred Heart Hospital, Hallym University, Chuncheon, South Korea
| | - Jun Ho Lee
- Institute of New Frontier Research, Hallym University College of Medicine, Chuncheon, South Korea
- Department of Otorhinolaryngology-Head and Neck Surgery, College of Medicine, Hallym University, Chuncheon, South Korea
- *Correspondence: Jun Ho Lee
| | - Jun Gyo Suh
- Department of Medical Genetics, College of Medicine, Hallym University, Chuncheon, South Korea
- Institute of Medical Science, College of Medicine, Hallym University, Chuncheon, South Korea
- Jun Gyo Suh
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A Review on Recent Advancement on Age-Related Hearing Loss: The Applications of Nanotechnology, Drug Pharmacology, and Biotechnology. Pharmaceutics 2021; 13:pharmaceutics13071041. [PMID: 34371732 PMCID: PMC8309044 DOI: 10.3390/pharmaceutics13071041] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Revised: 07/01/2021] [Accepted: 07/01/2021] [Indexed: 11/30/2022] Open
Abstract
Aging is considered a contributing factor to many diseases such as cardiovascular disease, Alzheimer’s disease, and hearing loss. Age-related hearing loss, also termed presbycusis, is one of the most common sensory impairments worldwide, affecting one in five people over 50 years of age, and this prevalence is growing annually. Associations have emerged between presbycusis and detrimental health outcomes, including social isolation and mental health. It remains largely untreatable apart from hearing aids, and with no globally established prevention strategies in the clinical setting. Hence, this review aims to explore the pathophysiology of presbycusis and potential therapies, based on a recent advancement in bile acid-based bio-nanotechnologies. A comprehensive online search was carried out using the following keywords: presbycusis, drugs, hearing loss, bile acids, nanotechnology, and more than 150 publications were considered directly relevant. Evidence of the multifaceted oxidative stress and chronic inflammation involvement in cellular damage and apoptosis that is associated with a loss of hair cells, damaged and inflamed stria vascularis, and neuronal signalling loss and apoptosis continues to emerge. New robust and effective therapies require drug delivery deeper into the various layers of the cochlea. Bile acid-based nanotechnology has gained wide interest in its permeation-enhancing ability and potential for numerous applications in treating presbycusis.
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