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Borrajo M, Sedano D, Palou A, Giménez-Esbrí V, Barrallo-Gimeno A, Llorens J. Maturation of type I and type II rat vestibular hair cells in vivo and in vitro. Front Cell Dev Biol 2024; 12:1404894. [PMID: 38895157 PMCID: PMC11183282 DOI: 10.3389/fcell.2024.1404894] [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: 03/21/2024] [Accepted: 05/16/2024] [Indexed: 06/21/2024] Open
Abstract
Vestibular sensory epithelia contain type I and type II sensory hair cells (HCI and HCII). Recent studies have revealed molecular markers for the identification of these cells, but the precise composition of each vestibular epithelium (saccule, utricle, lateral crista, anterior crista, posterior crista) and their postnatal maturation have not been described in detail. Moreover, in vitro methods to study this maturation are not well developed. We obtained total HCI and HCII counts in adult rats and studied the maturation of the epithelia from birth (P0) to postnatal day 28 (P28). Adult vestibular epithelia hair cells were found to comprise ∼65% HCI expressing osteopontin and PMCA2, ∼30% HCII expressing calretinin, and ∼4% HCII expressing SOX2 but neither osteopontin nor calretinin. At birth, immature HCs express both osteopontin and calretinin. P28 epithelia showed an almost adult-like composition but still contained 1.3% of immature HCs. In addition, we obtained free-floating 3D cultures of the epithelia at P1, which formed a fluid-filled cyst, and studied their survival and maturation in vitro up to day 28 (28 DIV). These cultures showed good HC resiliency and maturation. Using an enriched medium for the initial 4 days, a HCI/calretinin+-HCII ratio close to the in vivo ratio was obtained. These cultures are suitable to study HC maturation and mature HCs in pharmacological, toxicological and molecular research.
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Affiliation(s)
- Mireia Borrajo
- Departament de Ciències Fisiològiques, Universitat de Barcelona (UB), Hospitalet de Llobregat, Catalunya, Spain
- Institut de Neurociències, Universitat de Barcelona (UB), Barcelona, Catalunya, Spain
- Institut d’Investigació Biomèdica de Bellvitge (IDIBELL), Hospitalet de Llobregat, Catalunya, Spain
| | - David Sedano
- Departament de Ciències Fisiològiques, Universitat de Barcelona (UB), Hospitalet de Llobregat, Catalunya, Spain
| | - Aïda Palou
- Departament de Ciències Fisiològiques, Universitat de Barcelona (UB), Hospitalet de Llobregat, Catalunya, Spain
- Institut de Neurociències, Universitat de Barcelona (UB), Barcelona, Catalunya, Spain
- Institut d’Investigació Biomèdica de Bellvitge (IDIBELL), Hospitalet de Llobregat, Catalunya, Spain
| | - Víctor Giménez-Esbrí
- Departament de Ciències Fisiològiques, Universitat de Barcelona (UB), Hospitalet de Llobregat, Catalunya, Spain
- Institut de Neurociències, Universitat de Barcelona (UB), Barcelona, Catalunya, Spain
- Institut d’Investigació Biomèdica de Bellvitge (IDIBELL), Hospitalet de Llobregat, Catalunya, Spain
| | - Alejandro Barrallo-Gimeno
- Departament de Ciències Fisiològiques, Universitat de Barcelona (UB), Hospitalet de Llobregat, Catalunya, Spain
- Institut de Neurociències, Universitat de Barcelona (UB), Barcelona, Catalunya, Spain
- Institut d’Investigació Biomèdica de Bellvitge (IDIBELL), Hospitalet de Llobregat, Catalunya, Spain
| | - Jordi Llorens
- Departament de Ciències Fisiològiques, Universitat de Barcelona (UB), Hospitalet de Llobregat, Catalunya, Spain
- Institut de Neurociències, Universitat de Barcelona (UB), Barcelona, Catalunya, Spain
- Institut d’Investigació Biomèdica de Bellvitge (IDIBELL), Hospitalet de Llobregat, Catalunya, Spain
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Rani A, Salim R, Md Daud M, Narayanan M. Assessment of vestibulotoxicity of neem leaf (Azadirachta indica) in a rat animal model. INDIAN JOURNAL OF OTOLOGY 2020. [DOI: 10.4103/indianjotol.indianjotol_6_20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Yang X, Zhou S, Wu J, Liao Q, Wang C, Liu M, Qu L, Zhang Y, Cheng C, Chai R, Zhang K, Yu X, Huang P, Liu L, Xiong W, Chen S, Chen F. Surgery-free video-oculography in mouse models: enabling quantitative and short-interval longitudinal assessment of vestibular function. Neurosci Lett 2018; 696:212-218. [PMID: 30597229 DOI: 10.1016/j.neulet.2018.12.036] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2018] [Revised: 12/18/2018] [Accepted: 12/26/2018] [Indexed: 10/27/2022]
Abstract
Vestibulo-ocular reflex (VOR) responding to acceleration stimuli is originated from the vestibular apparatuses and thus widely used as an in vivo indicator of the vestibular function. We have developed a vestibular function testing (VFT) system that allows to evaluate VOR response with improved efficiency. The previously required surgical procedure has been avoided by using a newly designed animal-immobility setup. The efficacy of our VFT system was demonstrated on the mice with vestibular abnormalities caused by either genetic mutations (Lhfpl5-/- or Cdh23-/-) or applied vestibulotoxicant (3,3'-iminodipropionitrile, IDPN). Daily longitudinal inspection of the VOR response in the IDPN-administered mice gives the first VOR-based daily-progression profile of the vestibular impairment. The capability of VOR in quantifying the severity of toxicant-induced vestibular deficits has been also demonstrated. The acquired VOR-measurement results were validated against the corresponding behavioral-test results. Further validation against immunofluorescence microscopy was applied to the VOR data obtained from the IDPN-administered mice. We conclude that the improved efficiency of our surgery-free VFT system, firstly, enables the characterization of VOR temporal dynamics and quantification of vestibular-impairment severity that may reveal useful information in toxicological and/or pharmaceutical studies; and, secondly, confers our system promising potential to serve as a high-throughput screener for identifying genes and drugs that affect vestibular function.
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Affiliation(s)
- Xiaojie Yang
- Department of Biomedical Engineering, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China; Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education, School of Pharmaceutical Sciences, Zhongnan Hospital, Wuhan University, Wuhan, Hubei 430072, China.
| | - Shiyue Zhou
- Department of Biomedical Engineering, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China.
| | - Jiaojiao Wu
- Department of Biomedical Engineering, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China.
| | - Qun Liao
- Department of Biomedical Engineering, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China.
| | - Changquan Wang
- Institute of Microelectronics of Chinese Academy of Sciences, Beijing 100029, China.
| | - Minghua Liu
- Department of Biomedical Engineering, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China.
| | - Lei Qu
- Department of Biomedical Engineering, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China; State Key Laboratory of Reliability and Intelligence of Electrical Equipment, Department of Biomedical Engineering, Hebei University of Technology, Tianjin 300130, China.
| | - Yuan Zhang
- Key Laboratory for Developmental Genes and Human Disease, Ministry of Education, Institute of Life Sciences, Southeast University, Nanjing, Jiangsu 210096, China.
| | - Cheng Cheng
- Key Laboratory for Developmental Genes and Human Disease, Ministry of Education, Institute of Life Sciences, Southeast University, Nanjing, Jiangsu 210096, China; Research Institute of Otolaryngology, Nanjing, Jiangsu 210008, China; Department of Otolaryngology-Head and Neck Surgery, Nanjing Drum Tower Hospital Affiliated to Nanjing University Medical School, Nanjing, Jiangsu 210008, China.
| | - Renjie Chai
- Key Laboratory for Developmental Genes and Human Disease, Ministry of Education, Institute of Life Sciences, Southeast University, Nanjing, Jiangsu 210096, China; Research Institute of Otolaryngology, Nanjing, Jiangsu 210008, China; Co-innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu 226001, China; Jiangsu Province High-Tech Key Laboratory for Bio-Medical Research, Southeast University, Nanjing, Jiangsu 211189, China.
| | - Kun Zhang
- Department of Biomedical Engineering, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China.
| | - Xiaojie Yu
- Division of Life Science, Hong Kong University of Science and Technology, Hong Kong, China.
| | - Pingbo Huang
- Division of Life Science, Hong Kong University of Science and Technology, Hong Kong, China; Department of Chemical and Biological Engineering, Hong Kong University of Science and Technology, Hong Kong, China; State Key Laboratory of Molecular Neuroscience, Hong Kong University of Science and Technology, Hong Kong, China.
| | - Lian Liu
- School of Life Sciences, IDG/McGovern Institute for Brain Research, Tsinghua University, Beijing 100084, China.
| | - Wei Xiong
- School of Life Sciences, IDG/McGovern Institute for Brain Research, Tsinghua University, Beijing 100084, China.
| | - Shi Chen
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education, School of Pharmaceutical Sciences, Zhongnan Hospital, Wuhan University, Wuhan, Hubei 430072, China.
| | - Fangyi Chen
- Department of Biomedical Engineering, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China.
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Calyx junction dismantlement and synaptic uncoupling precede hair cell extrusion in the vestibular sensory epithelium during sub-chronic 3,3'-iminodipropionitrile ototoxicity in the mouse. Arch Toxicol 2018; 93:417-434. [PMID: 30377733 DOI: 10.1007/s00204-018-2339-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2018] [Accepted: 10/23/2018] [Indexed: 10/28/2022]
Abstract
The cellular and molecular events that precede hair cell (HC) loss in the vestibular epithelium during chronic ototoxic exposure have not been widely studied. To select a study model, we compared the effects of sub-chronic exposure to different concentrations of 3,3'-iminodipropionitrile (IDPN) in the drinking water of two strains of mice and of both sexes. In subsequent experiments, male 129S1/SvImJ mice were exposed to 30 mM IDPN for 5 or 8 weeks; animals were euthanized at the end of the exposure or after a washout period of 13 weeks. In behavioral tests, IDPN mice showed progressive vestibular dysfunction followed by recovery during washout. In severely affected animals, light and electron microscopy observations of the vestibular epithelia revealed HC extrusion towards the endolymphatic cavity. Comparison of functional and ultrastructural data indicated that animals with fully reversible dysfunction did not have significant HC loss or stereociliary damage, but reversible dismantlement of the calyceal junctions that characterize the contact between type I HCs (HCI) and their calyx afferents. Immunofluorescent analysis revealed the loss of calyx junction proteins, Caspr1 and Tenascin-C, during exposure and their recovery during washout. Synaptic uncoupling was also recorded, with loss of pre-synaptic Ribeye and post-synaptic GluA2 puncta, and differential reversibility among the three different kinds of synaptic contacts existing in the epithelium. qRT-PCR analyses demonstrated that some of these changes are at least in part explained by gene expression modifications. We concluded that calyx junction dismantlement and synaptic uncoupling are early events in the mouse vestibular sensory epithelium during sub-chronic IDPN ototoxicity.
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Callejo A, Durochat A, Bressieux S, Saleur A, Chabbert C, Domènech Juan I, Llorens J, Gaboyard-Niay S. Dose-dependent cochlear and vestibular toxicity of trans-tympanic cisplatin in the rat. Neurotoxicology 2017; 60:1-9. [PMID: 28223157 DOI: 10.1016/j.neuro.2017.02.007] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2016] [Revised: 02/10/2017] [Accepted: 02/10/2017] [Indexed: 11/18/2022]
Abstract
In vivo studies are needed to study cisplatin ototoxicity and to evaluate candidate protective treatments. Rats and mice are the preferred species for toxicological and pharmacological pre-clinical research, but systemic administration of cisplatin causes high morbidity in these species. We hypothesized that trans-tympanic administration of cisplatin would provide a good model for studying its auditory and vestibular toxicity in the rat. Cisplatin was administered by the trans-tympanic route in one ear (50μl, 0.5-2mg/ml) of rats of both sexes and two different strains. Cochlear toxicity was corroborated by histological means. Vestibular toxicity was demonstrated by behavioral and histological analysis. Cisplatin concentrations were assessed in inner ear after trans-tympanic and i.v. administration. In all experiments, no lethality and only scant body weight loss were recorded. Cisplatin caused dose-dependent cochlear toxicity, as demonstrated by hair cell counts in the apical and middle turns of the cochlea, and vestibular toxicity, as demonstrated by behavioral analysis and hair cell counts in utricles. High concentrations of cisplatin were found in the inner ear after trans-tympanic administration. In comparison, i.v. administration resulted in lower inner ear concentrations. We conclude that trans-tympanic administration provides an easy, reproducible and safe model to study the cochlear and vestibular toxicity of cisplatin in the rat. This route of exposure may be useful to address particular questions on cisplatin induced ototoxicity and to test candidate protective treatments.
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Affiliation(s)
- Angela Callejo
- Departament de Ciències Fisiològiques, Universitat de Barcelona, 08907 L'Hospitalet de Llobregat, Catalonia, Spain; Unitat Funcional d'Otorinolaringologia i Al·lèrgia, Institut Universtiari Dexeus, 08028 Barcelona, Catalonia, Spain
| | | | | | | | | | - Ivan Domènech Juan
- Unitat Funcional d'Otorinolaringologia i Al·lèrgia, Institut Universtiari Dexeus, 08028 Barcelona, Catalonia, Spain; Institut de Neurociències, Universitat de Barcelona, Catalonia, Spain
| | - Jordi Llorens
- Departament de Ciències Fisiològiques, Universitat de Barcelona, 08907 L'Hospitalet de Llobregat, Catalonia, Spain; Institut de Neurociències, Universitat de Barcelona, Catalonia, Spain; Institut d'Investigació Biomèdica de Bellvitge (IDIBELL), 08907 L'Hospitalet de Llobregat, Catalonia, Spain.
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Abstract
Objectives: Allyl nitrile (3-butenenitrile) occurs naturally in the environment, in particular, in cruciferous vegetables, indicating a possible daily intake of the compound. There is no report on actual health effects of allyl nitrile in humans, although it is possible that individuals in the environment are at a risk of exposure to allyl nitrile. However, little is known about its quantitative assessment for the environment and bioactivity in the body. This study provides a review of previous accumulated studies on allyl nitrile. Methods: Published literature on allyl nitrile was examined for findings on toxicity, metabolism, risk of various cancers, generation, intake estimates, and low-dose effects in the body. Results: High doses of allyl nitrile produce toxicity characterized by behavioral abnormalities, which are considered to be produced by an active metabolite, 3,4-epoxybutyronitrile. Cruciferous vegetables have been shown to have a potential role in reducing various cancers. Hydrolysis of the glucosinolate sinigrin, rich in cruciferous vegetables, results in the generation of allyl nitrile. An intake of allyl nitrile is estimated at 0.12 μmol/kg body weight in Japan. Repeated exposure to low doses of allyl nitrile upregulates antioxidant/phase II enzymes in various tissues; this may contribute to a reduction in neurotoxicity and skin inflammation. These high and low doses are far more than the intake estimate. Conclusion: Allyl nitrile in the environment is a compound with diverse bioactivities in the body, characterized by inducing behavioral abnormalities at high doses and some antioxidant/phase II enzymes at low doses.
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Affiliation(s)
- Hideji Tanii
- Department of Hygiene, Graduate School of Medical Sciences, Kanazawa University
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Boadas-Vaello P, Sedó-Cabezón L, Verdú E, Llorens J. Strain and Sex Differences in the Vestibular and Systemic Toxicity of 3,3′-Iminodipropionitrile in Mice. Toxicol Sci 2016; 156:109-122. [DOI: 10.1093/toxsci/kfw238] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Herzberger J, Frey H. Epicyanohydrin: Polymerization by Monomer Activation Gives Access to Nitrile-, Amino-, and Carboxyl-Functional Poly(ethylene glycol). Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b02178] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Jana Herzberger
- Institute
of Organic Chemistry, Johannes Gutenberg-University Mainz, Duesbergweg 10-14, 55128 Mainz, Germany
- Graduate
School
Materials Science in Mainz, Staudinger
Weg 9, 55128 Mainz, Germany
| | - Holger Frey
- Institute
of Organic Chemistry, Johannes Gutenberg-University Mainz, Duesbergweg 10-14, 55128 Mainz, Germany
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