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Choi GY, Lee IS, Moon E, Choi H, Je AR, Park JH, Kweon HS. Ameliorative effect of vanillic acid against scopolamine-induced learning and memory impairment in rat via attenuation of oxidative stress and dysfunctional synaptic plasticity. Biomed Pharmacother 2024; 177:117000. [PMID: 38941895 DOI: 10.1016/j.biopha.2024.117000] [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: 04/15/2024] [Revised: 05/29/2024] [Accepted: 06/17/2024] [Indexed: 06/30/2024] Open
Abstract
Alzheimer's disease (AD) is characterized by cognitive impairment, loss of learning and memory, and abnormal behaviors. Scopolamine (SCOP) is a non-selective antagonist of muscarinic acetylcholine receptors that exhibits the behavioral and molecular hallmarks of AD. Vanillic acid (VA), a phenolic compound, is obtained from the roots of a traditional plant called Angelica sinensis, and has several pharmacologic effects, including antimicrobial, anti-inflammatory, anti-angiogenic, anti-metastatic, and antioxidant properties. Nevertheless, VA's neuroprotective potential associated with the memory has not been thoroughly investigated. Therefore, this study investigated whether VA treatment has an ameliorative effect on the learning and memory impairment induced by SCOP in rats. Behavioral experiments were utilized to assess the learning and memory performance associated with the hippocampus. Using western blotting analysis and assay kits, the neuronal damage, oxidative stress, and acetylcholinesterase activity responses of hippocampus were evaluated. Additionally, the measurement of long-term potentiation was used to determine the function of synaptic plasticity in organotypic hippocampal slice cultures. In addition, the synaptic vesicles' density and the length and width of the postsynaptic density were evaluated using electron microscopy. Consequently, the behavioral, biochemical, electrophysiological, and ultrastructural analyses revealed that VA treatment prevents learning and memory impairments caused by SCOP in rats. The study's findings suggest that VA has a neuroprotective effect on SCOP-induced learning and memory impairment linked to the hippocampal cholinergic system, oxidative damage, and synaptic plasticity. Therefore, VA may be a prospective therapeutic agent for treating AD.
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Affiliation(s)
- Ga-Young Choi
- Center for Research Equipment, Korea Basic Science Institute, Cheongju 28119, Republic of Korea
| | - In-Seo Lee
- Department of Gerontology (AgeTech Service Convergence Major), Graduate School of East-West Medical Science, Kyung Hee University, Yongin 17104, Republic of Korea
| | - Eunyoung Moon
- Center for Research Equipment, Korea Basic Science Institute, Cheongju 28119, Republic of Korea
| | - Hyosung Choi
- Center for Research Equipment, Korea Basic Science Institute, Cheongju 28119, Republic of Korea
| | - A Reum Je
- Center for Research Equipment, Korea Basic Science Institute, Cheongju 28119, Republic of Korea
| | - Ji-Ho Park
- Department of Gerontology (AgeTech Service Convergence Major), Graduate School of East-West Medical Science, Kyung Hee University, Yongin 17104, Republic of Korea.
| | - Hee-Seok Kweon
- Center for Research Equipment, Korea Basic Science Institute, Cheongju 28119, Republic of Korea.
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Gallardo-Villagrán M, Paulus L, Leger DY, Therrien B, Liagre B. Dimethyl Sulfoxide: A Bio-Friendly or Bio-Hazard Chemical? The Effect of DMSO in Human Fibroblast-like Synoviocytes. Molecules 2022; 27:molecules27144472. [PMID: 35889344 PMCID: PMC9318029 DOI: 10.3390/molecules27144472] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 07/06/2022] [Accepted: 07/11/2022] [Indexed: 02/01/2023] Open
Abstract
The effect of dimethyl sulfoxide (DMSO) in rheumatoid arthritis (RA) human fibroblast-like synoviocytes (FLSs) has been studied on five different samples harvested from the joints (fingers, hands and pelvis) of five women with RA. At high concentrations (>5%), the presence of DMSO induces the cleavage of caspase-3 and PARP-1, two phenomena associated with the cell death mechanism. Even at a 0.5% concentration of DMSO, MTT assays show a strong toxicity after 24 h exposure (≈25% cell death). Therefore, to ensure a minimum impact of DMSO on RA FLSs, our study shows that the concentration of DMSO has to be below 0.05% to be considered safe.
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Affiliation(s)
- Manuel Gallardo-Villagrán
- Institut de Chimie, Université de Neuchâtel, Avenue de Bellevaux 51, CH-2000 Neuchâtel, Switzerland; (M.G.-V.); (B.T.)
- Laboratoire PEIRENE UR 22722, Faculté de Pharmacie, Université de Limoges, F-87025 Limoges, France; (L.P.); (D.Y.L.)
| | - Lucie Paulus
- Laboratoire PEIRENE UR 22722, Faculté de Pharmacie, Université de Limoges, F-87025 Limoges, France; (L.P.); (D.Y.L.)
| | - David Yannick Leger
- Laboratoire PEIRENE UR 22722, Faculté de Pharmacie, Université de Limoges, F-87025 Limoges, France; (L.P.); (D.Y.L.)
| | - Bruno Therrien
- Institut de Chimie, Université de Neuchâtel, Avenue de Bellevaux 51, CH-2000 Neuchâtel, Switzerland; (M.G.-V.); (B.T.)
| | - Bertrand Liagre
- Laboratoire PEIRENE UR 22722, Faculté de Pharmacie, Université de Limoges, F-87025 Limoges, France; (L.P.); (D.Y.L.)
- Correspondence:
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Ebselen attenuates tobramycin-induced ototoxicity in mice. J Cyst Fibros 2020; 20:271-277. [PMID: 32147183 DOI: 10.1016/j.jcf.2020.02.014] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Revised: 02/14/2020] [Accepted: 02/17/2020] [Indexed: 01/11/2023]
Abstract
BACKGROUND Cystic fibrosis patients are often adminstered tobramycin to treat pulmonary infections. Unfortunately, a common side effect is hearing loss, which can fluctuate. Ebselen has known anti-inflammatory properties and could reduce the incidence and severity of tobramycin-induced hearing loss. METHODS In vitro: neonatal cochlear cultures were treated with tobramycin or cotreated with tobramycin and ebselen for 3 days. In vivo: adult mice were injected with tobramycin or tobramycin and ebselen for 14 days. ABRs were collected in a repeated measures design until 56 days after treatments. ABR threshold shifts were analyzed and a novel cochleotoxic criteria applied to determine the incidence of ototoxicity. Cochlear immunohistology was analyzed for IHC and OHC loss. RESULTS Tobramycin leads to significant IHC and OHC loss in cochlear explant cultures. Ebselen co-treatment at 1:20 concentrations resulted in significant otoprotection. Tobramycin leads to significant ABR threshold shifts that are ameliorated by ebselen co-treatment. Hearing loss did not correlate with significant IHC or OHC loss. CONCLUSIONS This mouse model of tobramycin-induced ototoxicity is clinically relevant in that it results in an incidence and severity of hearing loss recently documented in clinic. The in vitro experiments show that tobramycin kills hair cells and that ebselen co-treatment can attenuate this ototoxicity. The in vivo model shows tobramycin-induced hearing loss is ameliorated by ebselen co-treatment, but this is not explained by concomitant hair cell loss. These preclinical data support the testing of ebselen in CF patients receiving tobramycin treatment.
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Wang Y, Han L, Diao T, Jing Y, Wang L, Zheng H, Ma X, Qi J, Yu L. A comparison of systemic and local dexamethasone administration: From perilymph/cochlea concentration to cochlear distribution. Hear Res 2018; 370:1-10. [PMID: 30223171 DOI: 10.1016/j.heares.2018.09.002] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Revised: 09/03/2018] [Accepted: 09/05/2018] [Indexed: 11/18/2022]
Abstract
Different types of inner ear diseases can damage different cochlear subsites by different mechanisms. Steroids administered by different methods are commonly used for treating inner ear diseases. There is reason to believe that dexamethasone (Dex) may reach cochlear subsite targets via different pathways after administration by different methods: Intratympanic (IT), postaural (PA), and intraperitoneal (IP). The purpose of this study was to explore the cochlear concentration and distribution of Dex after administration by different methods. High-performance liquid chromatography-mass spectrometry and immunofluorescence technology were employed to measure and compare the Dex concentration in the perilymph and cochlear tissue and the cochlear distribution of Dex. IT administration resulted in higher Dex concentrations in the perilymph and cochlear tissues than those with the other administration methods. Intratympanic and postaural administration could result in higher Dex concentrations in the organ of Corti than systemic administration, but systemic administration could result in higher Dex concentrations in the stria vascularis than the other administration methods. A decreasing basal-apical gradient of Dex uptake was present in the cochlea after IT but not IP or PA administration. These results indicate that different administration methods result in different Dex distributions, which can be attributed to features of the cochlear vascular system and intracochlear diffusion. Our results provide clinicians with an experimental basis for the use of different steroid injection routes to optimize the effects on inner ear diseases with different target organs.
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Affiliation(s)
- Yixu Wang
- Department of Otorhinolaryngology, Head and Neck Surgery, People's Hospital, Peking University, Beijing, PR China
| | - Lin Han
- Department of Otorhinolaryngology, Head and Neck Surgery, People's Hospital, Peking University, Beijing, PR China
| | - Tongxiang Diao
- Department of Otorhinolaryngology, Head and Neck Surgery, People's Hospital, Peking University, Beijing, PR China
| | - Yuanyuan Jing
- Department of Otorhinolaryngology, Head and Neck Surgery, People's Hospital, Peking University, Beijing, PR China
| | - Lin Wang
- Department of Otorhinolaryngology, Head and Neck Surgery, People's Hospital, Peking University, Beijing, PR China
| | - Hongwei Zheng
- Department of Otorhinolaryngology, Head and Neck Surgery, People's Hospital, Peking University, Beijing, PR China
| | - Xin Ma
- Department of Otorhinolaryngology, Head and Neck Surgery, People's Hospital, Peking University, Beijing, PR China
| | - Jingcui Qi
- Department of Otorhinolaryngology, Head and Neck Surgery, People's Hospital, Peking University, Beijing, PR China
| | - Lisheng Yu
- Department of Otorhinolaryngology, Head and Neck Surgery, People's Hospital, Peking University, Beijing, PR China.
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Roldán-Fidalgo A, Martín Saldaña S, Trinidad A, Olmedilla-Alonso B, Rodríguez-Valiente A, García-Berrocal JR, Ramírez-Camacho R. In vitro and in vivo effects of lutein against cisplatin-induced ototoxicity. ACTA ACUST UNITED AC 2016; 68:197-204. [PMID: 26850526 DOI: 10.1016/j.etp.2016.01.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2015] [Revised: 01/05/2016] [Accepted: 01/14/2016] [Indexed: 01/18/2023]
Abstract
INTRODUCTION Cisplatin is a commonly prescribed drug that produces ototoxicity as a side effect. Lutein is a carotenoid with antioxidant and anti-inflammatory properties previously tested for eye, heart and skin diseases but not evaluated to date in ear diseases. AIM To evaluate the protective effects of lutein on HEI-OC1 auditory cell line and in a Wistar rat model of cisplatin ototoxicity. MATERIALS AND METHODS In vitro study: Culture HEI-OC1 cells were exposed to lutein (2.5-100 μM) and to 25 μM cisplatin for 24h. In vivo study: Twenty eight female Wistar rats were randomized into three groups. Group A (n=8) received intratympanic lutein (0.03 mL) (1mg/mL) in the right ear and saline solution in the left one to determine the toxicity of lutein. Group B (n=8) received also intraperitoneal cisplatin (10mg/kg) to test the efficacy of lutein against cisplatin ototoxicity. Group C (n=12) received intratympanic lutein (0.03 mL) (1mg/mL) to quantify lutein in cochlear fluids (30 min, 1h and 5 days after treatment). Hearing function was evaluated by means of Auditory Steady-State Responses before the procedure and 5 days after (groups A and B). Morphological changes were studied by confocal laser scanning microscopy. RESULTS In vitro study: Lutein significantly reduced the cisplatin-induced cytotoxicity in the HEI-OC1 cells when they were pre-treated with lutein concentrations of 60 and 80 μM. In vivo study: Intratympanic lutein (1mg/mL) application showed no ototoxic effects. However it did not achieve protective effect against cisplatin-induced ototoxicity in Wistar rats. CONCLUSIONS Although lutein has shown beneficial effects in other pathologies, the present study only obtained protection against cisplatin ototoxicity in culture cells, but not in the in vivo model. The large molecule size, the low dose administered, and restriction to diffusion in the inner ear could account for this negative result.
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Affiliation(s)
- A Roldán-Fidalgo
- Department of Otorhinolaryngology, Hospital Puerta de Hierro Majadahonda, Universidad Autónoma de Madrid, Madrid, Spain.
| | - S Martín Saldaña
- Foundation for Biomedical Research, Puerta de Hierro Hospital, Madrid, Spain
| | - A Trinidad
- Department of Otorhinolaryngology, Hospital Puerta de Hierro Majadahonda, Universidad Autónoma de Madrid, Madrid, Spain
| | - B Olmedilla-Alonso
- Institute of Food Science, Technology and Nutrition, CSIC, Madrid, Spain
| | - A Rodríguez-Valiente
- Department of Otorhinolaryngology, Hospital Puerta de Hierro Majadahonda, Universidad Autónoma de Madrid, Madrid, Spain
| | - J R García-Berrocal
- Department of Otorhinolaryngology, Hospital Puerta de Hierro Majadahonda, Universidad Autónoma de Madrid, Madrid, Spain
| | - R Ramírez-Camacho
- Department of Otorhinolaryngology, Hospital Puerta de Hierro Majadahonda, Universidad Autónoma de Madrid, Madrid, Spain
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Ciftci Z, Deniz M, Yilmaz I, Ciftci HG, Sirin DY, Gultekin E. In vitro analysis of a novel controlled release system designed for intratympanic administration of N-acetylcysteine: a preliminary report. Am J Otolaryngol 2015; 36:786-93. [PMID: 26545472 DOI: 10.1016/j.amjoto.2015.08.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2015] [Revised: 08/05/2015] [Accepted: 08/09/2015] [Indexed: 11/30/2022]
Abstract
The aim of this in-vitro experimental study was to design a novel drug delivery system that may permit controlled release of N-acetylcysteine (NAC) following intratympanic administration. The system was composed of two different solutions that attained a hydrogel form within seconds after getting into contact with each other. The authors performed swelling, pH and temperature tests and analysis of controlled release of NAC from this novel controlled release system. For the structure and porosity analysis of the hydrogel, an environmental scanning electron microscope (SEM) was used. The diameter of designed hydrogel showed an increase when pH was increased. In addition, in comparison to acidic values, the pore diameter of the hydrogel increased significantly especially in physiological level. The increase in the pore diameter was also directly proportional to the increase in temperature. Spectrophotometric analysis showed that the amount of NAC released into the medium was statistically significant (p=0.038, t=-2.18, 95% CI; DF: 27). SEM analysis of the samples revealed a smooth surface topography and numerous porous structures. The authors are of the opinion that the designed hydrogel may be used as an alternative method for intratympanic delivery of NAC for otoprotective purposes. The disadvantages of intratympanic injection of the drug in its liquid form, including leakage through eustachian tube, restraining the patient in an uncomfortable position, necessity for repetitive injections and dose dependent inflammation of the middle ear epithelium, may also be avoided. Further in vivo studies should be conducted to assess its tolerability and effectivity.
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Affiliation(s)
- Zafer Ciftci
- Department of Otorhinolaryngology, School of Medicine, Namik Kemal University, Turkey.
| | - Mahmut Deniz
- Department of Otorhinolaryngology, School of Medicine, Namik Kemal University, Turkey
| | - Ibrahim Yilmaz
- Department of Pharmacovigilance and Rational Use of Drugs, Tekirdag State Hospital, Ministry of Health, Turkey
| | - Halide Gunes Ciftci
- Department of Otorhinolaryngology, Tekirdag State Hospital, Ministry of Health, Turkey
| | - Duygu Yasar Sirin
- Department of Biology, School of Arts and Sciences, Namik Kemal University, Turkey
| | - Erdogan Gultekin
- Department of Otorhinolaryngology, School of Medicine, Namik Kemal University, Turkey
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