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Yuan X, Li X, Xu Y, Zhong L, Yan Z, Chen Z. Microstructural changes of the vestibulocochlear nerve in patients with Ménière's disease using diffusion tensor imaging. Front Neurol 2022; 13:915826. [PMID: 36226092 PMCID: PMC9548978 DOI: 10.3389/fneur.2022.915826] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Accepted: 08/22/2022] [Indexed: 12/01/2022] Open
Abstract
Objective To evaluate the microstructural changes of the vestibulocochlear nerve in patients with Ménière's disease. Methods A total of 26 subjects, 13 patients with MD and 13 healthy controls, underwent diffusion tensor imaging (DTI) on a 3T scanner. The independent sample t-test was used to compare the differences in fractional anisotropy (FA) and apparent diffusion coefficient (ADC) between the two groups. A Pearson correlation was used between DTI and the dizziness handicap inventory (DHI) scores. Results There was a significant decrease in FA and an increase in ADC of the vestibulocochlear nerve in MD patients compared with healthy controls (P = 0.04, P = 0.001). FA had negative correlations with the DHI score (r = −0.62, P = 0.02) and DHI-functional score (r = −0.64, P = 0.02). Conclusion These results are the first evidence of possible changes in the microstructure of the vestibulocochlear nerves in patients with MD. DTI is a potential technique for evaluating the vestibulocochlear nerve in patients with MD.
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Affiliation(s)
- Xiaojia Yuan
- Department of Chinese Medicine, Zhang Zhongjing College of Chinese Medicine, Nanyang Institute of Technology, Nan Yang, China
- Department of Radiology, Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, China
| | - Xiaozhen Li
- Department of Radiology, Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, China
- *Correspondence: Xiaozhen Li
| | - Yu Xu
- Department of Radiology, Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, China
| | - Liqun Zhong
- Department of Neurology, Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, China
| | - Zhanfeng Yan
- Department of Otolaryngology, Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, China
| | - Zhengguang Chen
- Department of Radiology, Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, China
- Zhengguang Chen
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Xu LH, Yang Y, Liu HX, Xiao SF, Qiu WX, Wang JX, Zhao CC, Gui YH, Liu GZ, Peng B, Li X, Wang GH, Zhou X, Jiang ZL. Inner Ear Arginine Vasopressin-Vasopressin Receptor 2-Aquaporin 2 Signaling Pathway Is Involved in the Induction of Motion Sickness. J Pharmacol Exp Ther 2020; 373:248-260. [PMID: 32165443 DOI: 10.1124/jpet.119.264390] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Accepted: 02/24/2020] [Indexed: 11/22/2022] Open
Abstract
It has been identified that arginine vasopressin (AVP), vasopressin receptor 2(V2R), and the aquaporin 2 (AQP2) signaling pathway in the inner ear play important roles in hearing and balance functions through regulating the endolymph equilibrium; however, the contributions of this signaling pathway to the development of motion sickness are unclear. The present study was designed to investigate whether the activation of the AVP-V2R-AQP2 signaling pathway in the inner ear is involved in the induction of motion sickness and whether mozavaptan, a V2R antagonist, could reduce motion sickness. We found that both rotatory stimulus and intraperitoneal AVP injection induced conditioned taste aversion (a confirmed behavioral index for motion sickness) in rats and activated the AVP-V2R-AQP2 signaling pathway with a responsive V2R downregulation in the inner ears, and AVP perfusion in cultured epithelial cells from rat endolymphatic sacs induced similar changes in this pathway signaling. Vestibular training, V2R antagonist mozavaptan, or PKA inhibitor H89 blunted these changes in the V2R-AQP2 pathway signaling while reducing rotatory stimulus- or DDAVP (a V2R agonist)-induced motion sickness in rats and dogs. Therefore, our results suggest that activation of the inner ear AVP-V2R-AQP2 signaling pathway is potentially involved in the development of motion sickness; thus, mozavaptan targeting AVP V2Rs in the inner ear may provide us with a new application option to reduce motion sickness. SIGNIFICANCE STATEMENT: Motion sickness affects many people traveling or working. In the present study our results showed that activation of the inner ear arginine vasopressin-vaspopressin receptor 2 (V2R)-aquaporin 2 signaling pathway was potentially involved in the development of motion sickness and that blocking V2R with mozavaptan, a V2R antagonist, was much more effective in reducing motion sickness in both rat and dog; therefore, we demonstrated a new mechanism to underlie motion sickness and a new candidate drug to reduce motion sickness.
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Affiliation(s)
- Li-Hua Xu
- Department of Neurophysiology and Neuropharmacology, Institute of Special Environmental Medicine, Institute of Nautical Medicine and Co-innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu, China
| | - Yao Yang
- Department of Neurophysiology and Neuropharmacology, Institute of Special Environmental Medicine, Institute of Nautical Medicine and Co-innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu, China
| | - Hong-Xia Liu
- Department of Neurophysiology and Neuropharmacology, Institute of Special Environmental Medicine, Institute of Nautical Medicine and Co-innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu, China
| | - Shui-Feng Xiao
- Department of Neurophysiology and Neuropharmacology, Institute of Special Environmental Medicine, Institute of Nautical Medicine and Co-innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu, China
| | - Wen-Xia Qiu
- Department of Neurophysiology and Neuropharmacology, Institute of Special Environmental Medicine, Institute of Nautical Medicine and Co-innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu, China
| | - Jin-Xing Wang
- Department of Neurophysiology and Neuropharmacology, Institute of Special Environmental Medicine, Institute of Nautical Medicine and Co-innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu, China
| | - Chen-Chen Zhao
- Department of Neurophysiology and Neuropharmacology, Institute of Special Environmental Medicine, Institute of Nautical Medicine and Co-innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu, China
| | - Yuan-Hong Gui
- Department of Neurophysiology and Neuropharmacology, Institute of Special Environmental Medicine, Institute of Nautical Medicine and Co-innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu, China
| | - Gui-Zhu Liu
- Department of Neurophysiology and Neuropharmacology, Institute of Special Environmental Medicine, Institute of Nautical Medicine and Co-innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu, China
| | - Bin Peng
- Department of Neurophysiology and Neuropharmacology, Institute of Special Environmental Medicine, Institute of Nautical Medicine and Co-innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu, China
| | - Xia Li
- Department of Neurophysiology and Neuropharmacology, Institute of Special Environmental Medicine, Institute of Nautical Medicine and Co-innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu, China
| | - Guo-Hua Wang
- Department of Neurophysiology and Neuropharmacology, Institute of Special Environmental Medicine, Institute of Nautical Medicine and Co-innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu, China
| | - Xin Zhou
- Department of Neurophysiology and Neuropharmacology, Institute of Special Environmental Medicine, Institute of Nautical Medicine and Co-innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu, China
| | - Zheng-Lin Jiang
- Department of Neurophysiology and Neuropharmacology, Institute of Special Environmental Medicine, Institute of Nautical Medicine and Co-innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu, China
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Zou J, Pyykkö I, Hyttinen J. Inner ear barriers to nanomedicine-augmented drug delivery and imaging. J Otol 2016; 11:165-177. [PMID: 29937826 PMCID: PMC6002620 DOI: 10.1016/j.joto.2016.11.002] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2016] [Revised: 11/15/2016] [Accepted: 11/18/2016] [Indexed: 02/08/2023] Open
Abstract
There are several challenges to inner ear drug delivery and imaging due to the existence of tight biological barriers to the target structure and the dense bone surrounding it. Advances in imaging and nanomedicine may provide knowledge for overcoming the existing limitations to both the diagnosis and treatment of inner ear diseases. Novel techniques have improved the efficacy of drug delivery and targeting to the inner ear, as well as the quality and accuracy of imaging this structure. In this review, we will describe the pathways and biological barriers of the inner ear regarding drug delivery, the beneficial applications and limitations of the imaging techniques available for inner ear research, the behavior of engineered nanomaterials in inner ear applications, and future perspectives for nanomedicine-based inner ear imaging.
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Affiliation(s)
- Jing Zou
- Department of Otolaryngology – Head and Neck Surgery, Center for Otolaryngology – Head & Neck Surgery of Chinese PLA, Changhai Hospital, Second Military Medical University, Shanghai, China
- Hearing and Balance Research Unit, Field of Otolaryngology, School of Medicine, University of Tampere, Tampere, Finland
| | - Ilmari Pyykkö
- Hearing and Balance Research Unit, Field of Otolaryngology, School of Medicine, University of Tampere, Tampere, Finland
| | - Jari Hyttinen
- Department of Electronics and Communications Engineering, BioMediTech, Tampere University of Technology, Tampere, Finland
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Zou J, Ostrovsky S, Israel LL, Feng H, Kettunen MI, Lellouche JPM, Pyykkö I. Efficient penetration of ceric ammonium nitrate oxidant-stabilized gamma-maghemite nanoparticles through the oval and round windows into the rat inner ear as demonstrated by MRI. J Biomed Mater Res B Appl Biomater 2016; 105:1883-1891. [DOI: 10.1002/jbm.b.33719] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2015] [Revised: 04/04/2016] [Accepted: 05/09/2016] [Indexed: 12/13/2022]
Affiliation(s)
- Jing Zou
- Department of Otolaryngology-Head and Neck Surgery; Center for Otolaryngology-Head & Neck Surgery of Chinese PLA, Changhai Hospital, Second Military Medical University; Shanghai China
- Hearing and Balance Research Unit, Field of Oto-laryngology, School of Medicine, University of Tampere; Tampere Finland
| | - Stella Ostrovsky
- Laboratory of Nanoscale Materials and Systems, Department of Chemistry, Bar-Ilan University; Ramat-Gan Israel
| | - Liron L. Israel
- Laboratory of Nanoscale Materials and Systems, Department of Chemistry, Bar-Ilan University; Ramat-Gan Israel
| | - Hao Feng
- Hearing and Balance Research Unit, Field of Oto-laryngology, School of Medicine, University of Tampere; Tampere Finland
| | - Mikko I. Kettunen
- A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland; Kuopio Finland
| | - Jean-Paul Moshe Lellouche
- Laboratory of Nanoscale Materials and Systems, Department of Chemistry, Bar-Ilan University; Ramat-Gan Israel
| | - Ilmari Pyykkö
- Hearing and Balance Research Unit, Field of Oto-laryngology, School of Medicine, University of Tampere; Tampere Finland
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Pyykkö I, Zou J, Schrott-Fischer A, Glueckert R, Kinnunen P. An Overview of Nanoparticle Based Delivery for Treatment of Inner Ear Disorders. Methods Mol Biol 2016; 1427:363-415. [PMID: 27259938 DOI: 10.1007/978-1-4939-3615-1_21] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Nanoparticles offer new possibilities for inner ear treatment as they can carry a variety of drugs, protein, and nucleic acids to inner ear. Nanoparticles are equipped with several functions such as targetability, immuno-transparency, biochemical stability, and ability to be visualized in vivo and in vitro. A group of novel peptides can be attached to the surface of nanoparticles that will enhance the cell entry, endosomal escape, and nuclear targeting. Eight different types of nanoparticles with different payload carrying strategies are available now. The transtympanic delivery of nanoparticles indicates that, depending on the type of nanoparticle, different migration pathways into the inner ear can be employed, and that optimal carriers can be designed according to the intended cargo. The use of nanoparticles as drug/gene carriers is especially attractive in conjunction with cochlear implantation or even as an inclusion in the implant as a drug/gene reservoir.
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Affiliation(s)
- Ilmari Pyykkö
- Department of Otolaryngology, University of Tampere and University Hospital of Tampere, Tampere, 33014, Finland. .,Hearing and Balance Research Unit, Field of Otolaryngology, School of Medicine, University of Tampere, Medisiinarinkatu 3, Tampere, 33520, Finland.
| | - Jing Zou
- BECS, Department of Biomedical Engineering and Computational Science, Aalto University, Aalto, 02150, Espoo, Finland
| | - Annelies Schrott-Fischer
- Department of Otolaryngology, Medical University of Innsbruck, Anichstrasse 35, Innsbruck, 6020, Austria
| | - Rudolf Glueckert
- Department of Otolaryngology, Medical University of Innsbruck, Anichstrasse 35, Innsbruck, 6020, Austria
| | - Paavo Kinnunen
- BECS, Department of Biomedical Engineering and Computational Science, Aalto University, Aalto, Finland
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