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Hu Z, Long Y, Li X, Jia Z, Wang M, Huang X, Yu X. Effects of asiaticoside on the model of gestational diabetes mellitus in HTR-8/svneo cells via PI3K/AKT pathway. J OBSTET GYNAECOL 2024; 44:2350761. [PMID: 38785148 DOI: 10.1080/01443615.2024.2350761] [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: 02/19/2023] [Accepted: 07/29/2024] [Indexed: 05/25/2024]
Abstract
BACKGROUND Asiaticoside (AS) has been reported to improve the changes induced by high glucose stimulation, and it may have potential therapeutic effects on gestational diabetes mellitus (GDM). This study aims to explore the effect of AS on the cell model of GDM and the action mechanism of the PI3K/AKT pathway. METHODS The GDM model was established in HTR-8/Svneo cells with a high glucose (HG) medium. After the cytotoxicity assay of AS, cells were divided into the control group, HG group and HG + AS group to conduct control experiment in cells. The cell proliferation and migration were detected by CCK-8 assay and scratch test, respectively. The mRNA levels of PI3K, AKT2, mTORC1, and GLUT4 in PI3K/AKT signalling pathway were measured by RT-PCR, and the protein expressions of these signalling molecules were monitored by western blot. RESULTS AS showed a promotion effect on the cell proliferation rate of HTR-8/Svneo cells, and 80 μmol/L AS with a treatment time of 48 h had no cytotoxicity. The cell proliferation rate, migration rate, mRNA levels and protein expressions of PI3K, AKT2, mTORC1, and GLUT4 in the HG group were significantly lower than those in the control group, which were significantly increased in the HG + AS group (p < 0.05). CONCLUSIONS AS can facilitate the cell proliferation and migration in the cell model of GDM, and might play a role in GDM treatment via PI3K/AKT pathway.
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Affiliation(s)
- Zhilan Hu
- Department of Obstetrics and Gynecology, The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, China
| | - Ya Long
- School of Nursing, Dazhou Vocational College of Chinese Medicine, Dazhou, China
| | - Xiangyue Li
- Department of Obstetrics and Gynecology, The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, China
| | - Zhiqin Jia
- Department of Obstetrics and Gynecology, The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, China
| | - Mingyan Wang
- Department of Obstetrics and Gynecology, The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, China
| | - Xuemei Huang
- Department of Oncology and Hematology, The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, China
| | - Xiaolan Yu
- Department of Obstetrics and Gynecology, The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, China
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Mittal R, Keith G, Lacey M, Lemos JRN, Mittal J, Assayed A, Hirani K. Diabetes mellitus, hearing loss, and therapeutic interventions: A systematic review of insights from preclinical animal models. PLoS One 2024; 19:e0305617. [PMID: 38985787 PMCID: PMC11236185 DOI: 10.1371/journal.pone.0305617] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2024] [Accepted: 06/02/2024] [Indexed: 07/12/2024] Open
Abstract
OBJECTIVES The aim of this systematic review article is to evaluate the relationship between diabetes mellitus (DM) and sensorineural hearing loss (SNHL) utilizing preclinical animal models. The review focused on studies assessing SNHL in diabetic animal models, elucidating the mechanisms of DM-associated SNHL, and exploring the response of diabetic animal models to noise overexposure. We also discussed studies investigating the efficacy of potential therapeutic strategies for amelioration of DM-associated SNHL in the animal models. METHODS A protocol of this systematic review was designed a priori and was registered in the PROSPERO database (registration number: CRD42023439961). We conducted a comprehensive search on PubMed, Science Direct, Web of Science, Scopus, and EMBASE databases. A minimum of three reviewers independently screened, selected, and extracted data. The risk of bias assessment of eligible studies was conducted using the Systematic Review Center for Laboratory Animal Experimentation (SYRCLE) tool. RESULTS Following the screening of 238 studies, twelve original articles were included in this systematic review. The studies revealed that hyperglycemia significantly affects auditory function, with various pathological mechanisms contributing to DM-induced hearing impairment, including cochlear synaptopathy, microangiopathy, neuropathy, oxidative stress, mitochondrial abnormalities, and apoptosis-mediated cell death. Emerging interventions, such as Asiaticoside, Trigonelline, Chlorogenic acid, and Huotanquyu granules, demonstrated efficacy in providing otoprotection for preserving cochlear hair cells and hearing function. CONCLUSIONS Our systematic review delves into the intricate relationship between DM and hearing impairment in animal models. Future research should focus on targeted therapies to enhance cochlear mitochondrial function, alleviate oxidative stress, and regulate apoptosis. The association between SNHL and social isolation as well as cognitive decline underscores the necessity for innovative therapeutic modalities addressing yet undiscovered mechanisms. Translating findings from animal models to human studies will validate these findings, offering a synergistic approach to effectively manage DM-associated co-morbidities such as hearing impairment.
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Affiliation(s)
- Rahul Mittal
- Diabetes Research Institute, University of Miami Miller School of Medicine, Miami, Florida, United States of America
- Department of Otolaryngology, University of Miami Miller School of Medicine, Miami, Florida, United States of America
| | - Grant Keith
- School of Medicine and Public Health, University of Wisconsin, Madison, Wisconsin, United States of America
| | - Mitchel Lacey
- Herbert Wertheim College of Medicine, Florida International University, Miami, Florida, United States of America
| | - Joana R. N. Lemos
- Diabetes Research Institute, University of Miami Miller School of Medicine, Miami, Florida, United States of America
| | - Jeenu Mittal
- Department of Otolaryngology, University of Miami Miller School of Medicine, Miami, Florida, United States of America
| | - Amro Assayed
- Diabetes Research Institute, University of Miami Miller School of Medicine, Miami, Florida, United States of America
| | - Khemraj Hirani
- Diabetes Research Institute, University of Miami Miller School of Medicine, Miami, Florida, United States of America
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Huo Z, Gu J, He T. Apelin‑13 reduces high glucose‑induced mitochondrial dysfunction in cochlear hair cells by inhibiting endoplasmic reticulum stress. Exp Ther Med 2024; 27:226. [PMID: 38596659 PMCID: PMC11002831 DOI: 10.3892/etm.2024.12515] [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: 10/31/2023] [Accepted: 02/28/2024] [Indexed: 04/11/2024] Open
Abstract
The complex manifestation of diabetic hearing loss and the relative inaccessibility of the inner ear contribute to the lack of research. The present study aimed to reveal the role of Apelin-13, a critical regulator of lipid metabolism, in diabetes-induced hearing loss. Cochlear hair cells treated with high glucose (HG) were adopted as an in vitro research model, and the impacts of Apelin-13 on cellular oxidative stress, apoptosis, mitochondrial dysfunction and endoplasmic reticulum (ER) stress were determined. In addition, cells were treated with the ER stress agonist tunicamycin to further explore its potential role in the regulatory effects of Apelin-13. Apelin-13 inhibited oxidative stress and apoptosis in the HG-induced cells. Additionally, Apelin-13 elevated mitochondrial membrane potential and ATP production, whereas it reduced mitochondrial reactive oxygen species levels. The levels of ER stress-related proteins exhibited a downward trend in response to Apelin-13. By contrast, tunicamycin reversed the effects of Apelin-13 on the aforementioned aspects, suggesting the role of ER stress in the regulatory effects of Apelin-13. In conclusion, the present study elucidated the protective role of Apelin-13 in ameliorating HG-induced mitochondrial functional impairment in cochlear hair cells by inhibiting ER stress.
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Affiliation(s)
- Zhiqiang Huo
- Department of Otolaryngology, Affiliated Changshu Hospital of Nantong University, Changshu, Jiangsu 215500, P.R. China
| | - Jun Gu
- Department of Otolaryngology, Affiliated Changshu Hospital of Nantong University, Changshu, Jiangsu 215500, P.R. China
| | - Teng He
- Department of Otolaryngology, Affiliated Changshu Hospital of Nantong University, Changshu, Jiangsu 215500, P.R. China
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Deng Y, Chen S, Hu J. Diabetes mellitus and hearing loss. Mol Med 2023; 29:141. [PMID: 37875793 PMCID: PMC10599066 DOI: 10.1186/s10020-023-00737-z] [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: 07/26/2023] [Accepted: 10/02/2023] [Indexed: 10/26/2023] Open
Abstract
Diabetes mellitus (DM) is a major disease threatening human health and its incidence is increasing year on year. As a chronic complication of DM, hearing loss mostly occurs undetectably. However, the mechanism of this diabetes-related hearing loss (DRHL) remains unclear and there is no effective clinical treatment. Studies of animal or human pathology show that DM causes damage to the blood vessels, spiral ganglion neurons, afferent nerve fibers, the organ of Corti, and the stria vascularis of the inner ear. In recent years, more advances in pathological research have revealed the possible mechanism of DRHL. In addition, a large number of clinical studies suggest that the duration and severity of DM are closely related to the incidence and severity of DRHL. This review focuses on the relationship between DM and hearing loss. The clinical audiological characteristics of diabetic patients, risk factors for DRHL, typical pathology, and potential interventions of DRHL are summarized. This will help reveal the pathogenesis and intervention approaches for DRHL.
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Affiliation(s)
- Yuxin Deng
- Department of Endocrinology, Liyuan Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, Hubei, China
| | - Sen Chen
- Department of Otorhinolaryngology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.
| | - Jun Hu
- Department of Endocrinology, Liyuan Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, Hubei, China.
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5
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Du P, Liu T, Luo P, Li H, Tang W, Zong S, Xiao H. SIRT3/GLUT4 signaling activation by metformin protect against cisplatin-induced ototoxicity in vitro. Arch Toxicol 2023; 97:1147-1162. [PMID: 36800006 DOI: 10.1007/s00204-023-03457-9] [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: 12/11/2022] [Accepted: 02/02/2023] [Indexed: 02/18/2023]
Abstract
Cisplatin is highly effective for killing tumor cells. However, as one of its side effects, ototoxicity limits the clinical application of cisplatin. The mechanisms of cisplatin-induced ototoxicity have not been fully clarified yet. SIRT3 is a deacetylated protein mainly located in mitochondria, which regulates a variety of physiological processes in cells. The role of SIRT3 in cisplatin-induced hair cell injury has not been founded. In this study, primary cultured cochlear explants exposed to 5 μM cisplatin, as well as OC-1 cells exposed to 10 μM cisplatin, were used to establish models of cisplatin-induced ototoxicity in vitro. We found that when combined with cisplatin, metformin (75 μM) significantly up-regulated the expression of SIRT3 and alleviated cisplatin-induced apoptosis of hair cells. We regulated the expression of SIRT3 to explore the role of SIRT3 in cisplatin-induced auditory hair cell injury. Overexpression of SIRT3 promoted the survival of auditory hair cells and alleviated the apoptosis of auditory hair cells. In contrast, knockdown of SIRT3 impaired the protective effect of metformin and exacerbated cisplatin injury. In addition, we found that the protective effect of SIRT3 may be achieved by regulating GLUT4 translocation and rescuing impaired glucose uptake caused by cisplatin. Our study confirmed that upregulation of SIRT3 may antagonize cisplatin-induced ototoxicity, and provided a new perspective for the study of cisplatin-induced ototoxicity.
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Affiliation(s)
- Peiyu Du
- Department of Otolaryngology-Head and Neck Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Tianyi Liu
- Department of Otolaryngology-Head and Neck Surgery, Renmin Hospital of Wuhan University, Wuhan, China
| | - Pan Luo
- Department of Otolaryngology-Head and Neck Surgery, Wuhan Central Hospital, Wuhan, China
| | - Hejie Li
- Department of Otolaryngology-Head and Neck Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Wei Tang
- Department of Otolaryngology-Head and Neck Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Shimin Zong
- Department of Otolaryngology-Head and Neck Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.
| | - Hongjun Xiao
- Department of Otolaryngology-Head and Neck Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.
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He Z, Hu Y, Niu Z, Zhong K, Liu T, Yang M, Ji L, Hu W. A review of pharmacokinetic and pharmacological properties of asiaticoside, a major active constituent of Centella asiatica (L.) Urb. JOURNAL OF ETHNOPHARMACOLOGY 2023; 302:115865. [PMID: 36306932 DOI: 10.1016/j.jep.2022.115865] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2022] [Revised: 10/10/2022] [Accepted: 10/20/2022] [Indexed: 06/16/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Centella asiatica (L.) Urb., a potential medicinal plant, is widely used in orient traditional medicine. Its major active constituents include asiaticoside (AS), madecassoside (MS), asiatic acid and madecassic acid. Thereinto, AS is a pentacyclic triterpenoid saponin with a variety of pharmacological effects including antitumor, neuroprotective and wound healing effects. AIM OF THE STUDY In this review, we summarize the pharmacokinetics, safety and pharmacological properties of AS. MATERIALS AND METHODS We gathered information about AS from articles published up to 2022 and listed in Google scholar, PubMed, Web of Science, Elsevier, and similar databases. The keywords used in our search included "asiaticoside", "Centella asiatica", "pharmacokinetics", "nerve", "cancer", "skin", etc. RESULTS: AS appeared to degrade through a first-order reaction and had low biotoxicity. However, the pharmacokinetic properties of AS differed according to species. AS is highly blood-brain-barrier permeable without any harmful side effect. It has a variety of pharmacological effects including anti-neural inflammation and anti-cancer properties, as well as protective properties for the skin, cardiovascular system, and pulmonary system. CONCLUSION This review comprehensively summarized current information regarding the pharmacokinetic and pharmacological properties of AS, and supported the pharmaceutical value of this compound. Future research should focus on improving bioavailability of AS and conducting clinical assessment.
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Affiliation(s)
- Ziliang He
- School of Chemistry and Life Sciences, Suzhou University of Science and Technology, Suzhou, China; School of Life Sciences, Huaiyin Normal University, Huaian, 223300, China.
| | - Yeye Hu
- School of Life Sciences, Huaiyin Normal University, Huaian, 223300, China.
| | - Zhiqiang Niu
- School of Life Sciences, Huaiyin Normal University, Huaian, 223300, China.
| | - Kang Zhong
- School of Life Sciences, Huaiyin Normal University, Huaian, 223300, China.
| | - Tingwu Liu
- School of Life Sciences, Huaiyin Normal University, Huaian, 223300, China.
| | - Meng Yang
- Jiangsu Food and Pharmaceutical Science College, Huaian, 223300, China.
| | - Lilian Ji
- School of Chemistry and Life Sciences, Suzhou University of Science and Technology, Suzhou, China.
| | - Weicheng Hu
- School of Life Sciences, Huaiyin Normal University, Huaian, 223300, China.
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7
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Juranek J, Mukherjee K, Kordas B, Załęcki M, Korytko A, Zglejc-Waszak K, Szuszkiewicz J, Banach M. Role of RAGE in the Pathogenesis of Neurological Disorders. Neurosci Bull 2022; 38:1248-1262. [PMID: 35729453 PMCID: PMC9554177 DOI: 10.1007/s12264-022-00878-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2021] [Accepted: 03/03/2022] [Indexed: 11/30/2022] Open
Abstract
This review reflects upon our own as well as other investigators' studies on the role of receptor for advanced glycation end-products (RAGE), bringing up the latest information on RAGE in physiology and pathology of the nervous system. Over the last ten years, major progress has been made in uncovering many of RAGE-ligand interactions and signaling pathways in nervous tissue; however, the translation of these discoveries into clinical practice has not come to fruition yet. This is likely, in part to be the result of our incomplete understanding of this crucial signaling pathway. Clinical trials examining the therapeutic efficacy of blocking RAGE-external ligand interactions by genetically engineered soluble RAGE or an endogenous RAGE antagonist, has not stood up to its promise; however, other trials with different blocking agents are being considered with hope for therapeutic success in diseases of the nervous system.
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Affiliation(s)
- Judyta Juranek
- Department of Human Physiology and Pathophysiology, School of Medicine, University of Warmia and Mazury, 10-085, Olsztyn, Poland.
| | - Konark Mukherjee
- Fralin Biomedical Research Institute at VTC, Virginia Tech, Blacksburg, VA, 24016, USA
| | - Bernard Kordas
- Department of Human Physiology and Pathophysiology, School of Medicine, University of Warmia and Mazury, 10-085, Olsztyn, Poland
| | - Michał Załęcki
- Department of Animal Anatomy, Faculty of Veterinary Medicine, University of Warmia and Mazury, 10-719, Olsztyn, Poland
| | - Agnieszka Korytko
- Department of Human Physiology and Pathophysiology, School of Medicine, University of Warmia and Mazury, 10-085, Olsztyn, Poland
| | - Kamila Zglejc-Waszak
- Department of Human Physiology and Pathophysiology, School of Medicine, University of Warmia and Mazury, 10-085, Olsztyn, Poland
| | - Jarosław Szuszkiewicz
- Department of Materials and Machines Technology, Faculty of Technical Sciences, University of Warmia and Mazury, 10-719, Olsztyn, Poland
| | - Marta Banach
- Department of Neurology, Collegium Medicum, Jagiellonian University, 31-008, Kraków, Poland.
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Muneerungsee N, Tanasawet S, Moolsap F, Udomuksorn W, Tantisira M, Zaima N, Sukketsiri W. The standardized Centella asiatica extract suppressed the inflammation and apoptosis in macrophage-conditioned medium and nutrient stress-induced adipocytes. Biologia (Bratisl) 2022. [DOI: 10.1007/s11756-022-01194-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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9
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Busa P, Kuthati Y, Huang N, Wong CS. New Advances on Pathophysiology of Diabetes Neuropathy and Pain Management: Potential Role of Melatonin and DPP-4 Inhibitors. Front Pharmacol 2022; 13:864088. [PMID: 35496279 PMCID: PMC9039240 DOI: 10.3389/fphar.2022.864088] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Accepted: 03/14/2022] [Indexed: 12/14/2022] Open
Abstract
Pre-diabetes and diabetes are growing threats to the modern world. Diabetes mellitus (DM) is associated with comorbidities such as hypertension (83.40%), obesity (90.49%), and dyslipidemia (93.43%), creating a substantial burden on patients and society. Reductive and oxidative (Redox) stress level imbalance and inflammation play an important role in DM progression. Various therapeutics have been investigated to treat these neuronal complications. Melatonin and dipeptidyl peptidase IV inhibitors (DPP-4i) are known to possess powerful antioxidant and anti-inflammatory properties and have garnered significant attention in the recent years. In this present review article, we have reviewed the recently published reports on the therapeutic efficiency of melatonin and DPP-4i in the treatment of DM. We summarized the efficacy of melatonin and DPP-4i in DM and associated complications of diabetic neuropathy (DNP) and neuropathic pain. Furthermore, we discussed the mechanisms of action and their efficacy in the alleviation of oxidative stress in DM.
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Affiliation(s)
- Prabhakar Busa
- Department of Anesthesiology, Cathay General Hospital, Taipei, Taiwan
| | - Yaswanth Kuthati
- Department of Anesthesiology, Cathay General Hospital, Taipei, Taiwan
| | - Niancih Huang
- Department of Anesthesiology, Tri-Service General Hospital, Taipei, Taiwan
- Grauate Institute of Medical Sciences, National Defense Medical Center, Taipei, Taiwan
| | - Chih-Shung Wong
- Department of Anesthesiology, Cathay General Hospital, Taipei, Taiwan
- Department of Anesthesiology, Tri-Service General Hospital, Taipei, Taiwan
- Grauate Institute of Medical Sciences, National Defense Medical Center, Taipei, Taiwan
- *Correspondence: Chih-Shung Wong,
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10
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Draf C, Wyrick T, Chavez E, Pak K, Kurabi A, Leichtle A, Dazert S, Ryan AF. A Screen of Autophagy Compounds Implicates the Proteasome in Mammalian Aminoglycoside-Induced Hair Cell Damage. Front Cell Dev Biol 2021; 9:762751. [PMID: 34765606 PMCID: PMC8576371 DOI: 10.3389/fcell.2021.762751] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2021] [Accepted: 10/05/2021] [Indexed: 12/30/2022] Open
Abstract
Introduction: Autophagy is a degradative pathway to safely break down and recycle dysfunctional cellular components. There is prior evidence of autophagy participation during hair cell (HC) damage. Our goal was to screen compounds targeting different aspects of autophagy for their effects on HC loss due to an ototoxic aminoglycoside, gentamicin (GM). Methods: The SELLECKChem autophagy compound library, consisting of 154 compounds with defined autophagy inducing or inhibitory activity, was used for targeted screening in vitro model of ototoxicity. Organ of Corti from postnatal days 3–5 pou4f3/GFP transgenic mice (HCs express green fluorescent protein) were utilized. The organs were micro-dissected, and basal and middle turns divided into micro-explants individually placed into the single wells of a 96-well plate. Samples were treated with 200 μM of GM plus three dosages of tested compound and cultured for 72 h. Negative controls were treated with media only; positive ototoxicity controls were treated with GM only. Results: The majority of the library compounds had no effect on GM-induced HC loss. However, 18 compounds exhibited a significant, protective effect, two compounds were protective at low dosage but showed enhanced GM toxicity at higher doses and one compound was toxic to HCs in the absence of GM. Conclusions: This study evaluated many autophagy compounds that have not been tested previously on HCs. The disparate results obtained underscore the complexity of autophagy events that can influence HC responses to aminoglycosides, but also implicate the proteosome as an important damage mechanism. The screening results can serve as basis for further studies with protective compounds as potential drug targets.
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Affiliation(s)
- Clara Draf
- Department of Surgery/Otolaryngology, University of California, San Diego, San Diego, CA, United States.,Department of Otolaryngology, St. Elisabeth-Hospital, Ruhr University Bochum, Bochum, Germany
| | - Taylor Wyrick
- Department of Biology, University of California, San Diego, San Diego, CA, United States
| | - Eduardo Chavez
- Department of Surgery/Otolaryngology, University of California, San Diego, San Diego, CA, United States
| | - Kwang Pak
- Department of Surgery/Otolaryngology, University of California, San Diego, San Diego, CA, United States
| | - Arwa Kurabi
- Department of Surgery/Otolaryngology, University of California, San Diego, San Diego, CA, United States
| | - Anke Leichtle
- Department of Otolaryngology, University Medical Center Schleswig-Holstein, Lübeck, Germany
| | - Stefan Dazert
- Department of Otolaryngology, St. Elisabeth-Hospital, Ruhr University Bochum, Bochum, Germany
| | - Allen F Ryan
- Department of Surgery/Otolaryngology, University of California, San Diego, San Diego, CA, United States.,Department of Neurosciences, University of California, San Diego, San Diego, CA, United States.,VA San Diego Healthcare System, San Diego, CA, United States
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11
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Actions and Therapeutic Potential of Madecassoside and Other Major Constituents of Centella asiatica: A Review. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11188475] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Centella asiatica is a popular herb well-known for its wide range of therapeutic effects and its use as a folk medicine for many years. Its therapeutic properties have been well correlated with the presence of asiaticoside, madecassoside, asiatic and madecassic acids, the pentacyclic triterpenes. The herb has been extensively known to treat skin conditions; nevertheless, several pre-clinical and clinical studies have scientifically demonstrated its effectiveness in other disorders. Among the active constituents that have been identified in Centella asiatica, madecassoside has been the subject of only a relatively small number of scientific reports. Therefore, this review, while including other major constituents of this plant, focuses on the therapeutic potential, pharmacokinetics and toxicity of madecassoside.
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12
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Lee CH, Kim KW, Lee DH, Lee SM, Kim SY. Overexpression of the receptor for advanced glycation end-products in the auditory cortex of rats with noise-induced hearing loss. BMC Neurosci 2021; 22:38. [PMID: 34020590 PMCID: PMC8139161 DOI: 10.1186/s12868-021-00642-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2020] [Accepted: 05/11/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The receptor for advanced glycation end-products (RAGE) is involved in neuroinflammation. This study investigated the changes in RAGE expression following noise-induced hearing loss. METHODS Three-week-old female Sprague-Dawley rats were exposed to 115 dB SPL white noise for 4 h daily for 3 d (noise group, n = 16). In parallel, age and sex-matched control rats were raised under standard conditions without noise exposure (control group, n = 16). After 2 h (noise immediate, n = 8) and 4 wk (noise 4-week, n = 8) of noise exposure, the auditory cortex was harvested and cytoplasmic and nuclear fractions were isolated. The gene expression levels of tumor necrosis factor alpha (TNF-α), interleukin 6 (IL6), interleukin 1 beta (IL1β), nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB), and RAGE were evaluated using real-time reverse transcription polymerase chain reaction. The protein expression levels of nuclear RAGE and cytosolic RAGE were evaluated using western blotting. Additionally, matrix metalloproteinase 9 (MMP9) was pharmacologically inhibited in the noise immediate group, and then nuclear and cytosolic RAGE expression levels were evaluated. RESULTS The noise immediate and noise 4-week groups exhibited increased auditory thresholds at 4, 8, 16, and 32 kHz frequencies. The genes encoding the pro-inflammatory cytokines TNF-α, IL6, IL1β, and NF- κB were increased 3.74, 1.63, 6.42, and 6.23-fold in the noise immediate group, respectively (P = 0.047, 0.043, 0.044, and 0.041). RAGE mRNA expression was elevated 1.42-fold in the noise 4-week group (P = 0.032). Cytosolic RAGE expression was increased 1.76 and 6.99-fold in the noise immediate and noise 4-week groups, respectively (P = 0.04 and 0.03). Nuclear RAGE expression was comparable between the noise and control groups. matrix metalloproteinase 9 (MMP9) inhibition reduced cytosolic RAGE expression in the noise immediate group (P = 0.004). CONCLUSIONS Noise exposure increased the expression of cytosolic RAGE in the auditory cortex and upregulated pro-inflammatory genes, but this response could be alleviated by MMP9 inhibition.
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Affiliation(s)
- Chang Ho Lee
- Department of Otorhinolaryngology-Head and Neck Surgery, CHA University College of Medicine, 59, Yatap-ro, Bundang-gu, Seongnam, 13496, Gyeonggi-do, Korea
| | - Kyung Woon Kim
- Department of Otorhinolaryngology-Head and Neck Surgery, CHA University College of Medicine, 59, Yatap-ro, Bundang-gu, Seongnam, 13496, Gyeonggi-do, Korea
| | - Da-Hye Lee
- Department of Otorhinolaryngology-Head and Neck Surgery, CHA University College of Medicine, 59, Yatap-ro, Bundang-gu, Seongnam, 13496, Gyeonggi-do, Korea
| | - So Min Lee
- Department of Otorhinolaryngology-Head and Neck Surgery, CHA University College of Medicine, 59, Yatap-ro, Bundang-gu, Seongnam, 13496, Gyeonggi-do, Korea
| | - So Young Kim
- Department of Otorhinolaryngology-Head and Neck Surgery, CHA University College of Medicine, 59, Yatap-ro, Bundang-gu, Seongnam, 13496, Gyeonggi-do, Korea.
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13
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Seon GM, Lee MH, Koo MA, Hong SH, Park YJ, Jeong HK, Kwon BJ, Kim D, Park JC. Asiaticoside and polylysine-releasing collagen complex for effectively reducing initial inflammatory response using inflamed induced in vitro model. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 121:111837. [PMID: 33579475 DOI: 10.1016/j.msec.2020.111837] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2020] [Revised: 12/17/2020] [Accepted: 12/20/2020] [Indexed: 12/31/2022]
Abstract
Inflammation is a significant clinical problem that can arise from full-thickness wounds or burn injuries or microbial disease. Although topical wound healing substances could promote rapid wound healing by preventing or reducing the consequences of inflammation, there still remains a need for the development of novel substances that can effectively reduce infection and inflammation in initial wound healing phase. In this study, collagen was combined with asiaticoside (AS) and ε-poly-l-lysine (εPLL). This complex was then applied to in vitro models of infection and inflammation. Collagen-AS coatings inhibited the initial inflammatory response to LPS through a sustained release of AS, and a bilayer coating-εPLL showed a notable antimicrobial effect using microbial infection test. In this study, we determined whether asiaticoside and εPLL have anti-inflammatory and antibacterial effects through different mechanisms. Collectively, the collagen-AS/εPLL complex indicated great therapeutic potentials for accelerate wound healing and the complex may be considered as a artificial scaffold substitute product to full-thickness wound healing.
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Affiliation(s)
- Gyeung Mi Seon
- Cellbiocontrol Laboratory, Department of Medical Engineering, Yonsei University College of Medicine, Republic of Korea; Department of Medical Engineering, Graduate School of Medical Science, Brain Korea 21 Project, Yonsei University College of Medicine, Republic of Korea
| | - Mi Hee Lee
- Cellbiocontrol Laboratory, Department of Medical Engineering, Yonsei University College of Medicine, Republic of Korea
| | - Min-Ah Koo
- Cellbiocontrol Laboratory, Department of Medical Engineering, Yonsei University College of Medicine, Republic of Korea; Department of Medical Engineering, Graduate School of Medical Science, Brain Korea 21 Project, Yonsei University College of Medicine, Republic of Korea
| | - Seung Hee Hong
- Cellbiocontrol Laboratory, Department of Medical Engineering, Yonsei University College of Medicine, Republic of Korea; Department of Medical Engineering, Graduate School of Medical Science, Brain Korea 21 Project, Yonsei University College of Medicine, Republic of Korea
| | - Ye Jin Park
- Cellbiocontrol Laboratory, Department of Medical Engineering, Yonsei University College of Medicine, Republic of Korea; Department of Medical Device Industry, Yonsei University College of Medicine, Republic of Korea
| | - Ha Kyeong Jeong
- Cellbiocontrol Laboratory, Department of Medical Engineering, Yonsei University College of Medicine, Republic of Korea; Department of Medical Device Industry, Yonsei University College of Medicine, Republic of Korea
| | - Byeong-Ju Kwon
- Department of Medical Device Industry, Yonsei University College of Medicine, Republic of Korea
| | - Dohyun Kim
- Cellbiocontrol Laboratory, Department of Medical Engineering, Yonsei University College of Medicine, Republic of Korea
| | - Jong-Chul Park
- Cellbiocontrol Laboratory, Department of Medical Engineering, Yonsei University College of Medicine, Republic of Korea; Department of Medical Engineering, Graduate School of Medical Science, Brain Korea 21 Project, Yonsei University College of Medicine, Republic of Korea.
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14
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Wu K, Yao G, Shi X, Zhang H, Zhu Q, Liu X, Lu G, Hu L, Gong W, Yang Q, Ding Y. Asiaticoside ameliorates acinar cell necrosis in acute pancreatitis via toll-like receptor 4 pathway. Mol Immunol 2020; 130:122-132. [PMID: 33308902 DOI: 10.1016/j.molimm.2020.11.018] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Revised: 11/10/2020] [Accepted: 11/23/2020] [Indexed: 12/19/2022]
Abstract
Acinar cell necrosis is one of the most prominent pathophysiological changes of acute pancreatitis (AP). Asiaticoside (AS) is a triterpene compound with confirmed apoptosis-and necrosis-related activities. However, the specific effects of AS on AP have not been determined. In this study, we aimed to investigate the protective effect of AS on AP using two mouse models. In the caerulein-induced mild acute pancreatitis (MAP) model, We found that AS administration reduced serum amylase levels and alleviated the histopathological manifestations of pancreatic tissue in a dose-dependent manner. And the levels of toll-like receptor 4 (TLR4) and necrotic related proteins (RIP3 and p-MLKL) of pancreatic tissue were reduced after AS administration. In addition, TLR4 deficiency eliminated the protective effect of AS on AP induced by caerulein in mice. Correspondingly, we elucidated the effect of AS in vitro and found that AS protected against pancreatic acinar cells necrosis and TAK-242 counteracted this protective effect. Meanwhile, we found that AS ameliorated the severity of pancreatic tissue injury and pancreatitis-associated lung injury in a severe acute pancreatitis model induced by l-arginine. Furthermore, Molecular docking results revealed interaction between AS and TLR4. Taken together, our data for the first time confirmed the protective effects of AS on AP in mice via TLR4 pathway.
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Affiliation(s)
- Keyan Wu
- Pancreatic Center, Department of Gastroenterology, Affiliated Hospital of Yangzhou University, Yangzhou University, Yangzhou, Jiangsu, 225009, PR China.
| | - Guanghuai Yao
- Pancreatic Center, Department of Gastroenterology, Affiliated Hospital of Yangzhou University, Yangzhou University, Yangzhou, Jiangsu, 225009, PR China.
| | - Xiaolei Shi
- Department of Critical Care Medicine, PLA Key Laboratory of Emergency and Critical Care Research, Jinling Hospital, Medical School of Nanjing University, Nanjing, Jiangsu, 210000, PR China.
| | - Huan Zhang
- Medical College of Yangzhou University, Yangzhou University, Yangzhou, Jiangsu, 225009, PR China.
| | - Qingtian Zhu
- Pancreatic Center, Department of Gastroenterology, Affiliated Hospital of Yangzhou University, Yangzhou University, Yangzhou, Jiangsu, 225009, PR China.
| | - Xinnong Liu
- Department of General Surgery, Affiliated Hospital of Yangzhou University, Yangzhou University, Jiangsu, PR China.
| | - Guotao Lu
- Pancreatic Center, Department of Gastroenterology, Affiliated Hospital of Yangzhou University, Yangzhou University, Yangzhou, Jiangsu, 225009, PR China.
| | - Lianghao Hu
- Department of Gastroenterology, Changhai Hospital, Second Military Medical University, Shanghai, PR China.
| | - Weijuan Gong
- Pancreatic Center, Department of Gastroenterology, Affiliated Hospital of Yangzhou University, Yangzhou University, Yangzhou, Jiangsu, 225009, PR China.
| | - Qi Yang
- Department of Critical Care Medicine, PLA Key Laboratory of Emergency and Critical Care Research, Jinling Hospital, Medical School of Nanjing University, Nanjing, Jiangsu, 210000, PR China.
| | - Yanbing Ding
- Pancreatic Center, Department of Gastroenterology, Affiliated Hospital of Yangzhou University, Yangzhou University, Yangzhou, Jiangsu, 225009, PR China.
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15
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Li J, Shangguan H, Chen X, Ye X, Zhong B, Chen P, Wang Y, Xin B, Bi Y, Zhu D. Advanced glycation end product levels were correlated with inflammation and carotid atherosclerosis in type 2 diabetes patients. Open Life Sci 2020; 15:364-372. [PMID: 33817224 PMCID: PMC7874589 DOI: 10.1515/biol-2020-0042] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Revised: 04/25/2020] [Accepted: 05/03/2020] [Indexed: 11/18/2022] Open
Abstract
Diabetes mellitus with atherosclerosis (AS) adds to the social burden. This study aimed to investigate whether advanced glycation end product (AGE) levels were correlated with inflammation and carotid AS (CAS) in type 2 diabetes mellitus (T2DM) patients. A total of 50 elderly T2DM patients and 50 age-matched senior healthy subjects were recruited in this study. T2DM patients were classified into two groups based on the intima–media thickness (IMT) of the carotid artery from color Doppler ultrasonography. Patients with IMT > 1 mm were classified into the T2DM + CAS group (n = 28), and patients with IMT < 1 mm were assigned as the T2DM + non-atherosclerosis (NAS) group (n = 22). The plasma levels of AGEs, receptor for AGE (RAGE), tumor necrosis factor alpha (TNF-α), and interferon gamma (IFN-γ) of all subjects were measured by enzyme-linked immunosorbent assay. The T-lymphocyte subsets were analyzed by a flow detector. T2DM + CAS patients showed significantly higher concentrations of AGEs, RAGE, TNF-α, and IFN-γ in the peripheral blood. The highest levels of CD4+ T cells were observed in the T2DM + CAS group. The AGE level was positively correlated with the concentrations of RAGE, TNF-α, IFN-γ, and CD4+. In summary, the results showed that the levels of AGEs may be correlated with the inflammatory status in T2DM patients with CAS.
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Affiliation(s)
- Jie Li
- Department of Endocrinology, Drum Tower Hospital Clinical College of Nanjing Medical University, Nanjing 210008, China.,Department of Endocrinology, Nanjing Central Hospital, Nanjing 210008, China
| | - Haiyan Shangguan
- Department of Endocrinology, Nanjing Central Hospital, Nanjing 210008, China
| | - Xiaoqian Chen
- Department of Endocrinology, Nanjing Central Hospital, Nanjing 210008, China
| | - Xiao Ye
- Department of Endocrinology, Zhejiang Provincial People's Hospital, Hangzhou 310000, China.,Department of Endocrinology, People's Hospital of Hangzhou Medical College, Hangzhou 310000, China
| | - Bin Zhong
- Department of Endocrinology, Nanjing Central Hospital, Nanjing 210008, China
| | - Pen Chen
- Department of Endocrinology, Nanjing Central Hospital, Nanjing 210008, China
| | - Yamei Wang
- Department of Endocrinology, Nanjing Central Hospital, Nanjing 210008, China
| | - Bin Xin
- Department of Endocrinology, Nanjing Central Hospital, Nanjing 210008, China
| | - Yan Bi
- Department of Endocrinology, Drum Tower Hospital Clinical College of Nanjing Medical University, Nanjing 210008, China.,Department of Endocrinology, Drum Tower Hospital Affiliated to Nanjing University Medical School, Nanjing 210008, Jiangsu, China
| | - Dalong Zhu
- Department of Endocrinology, Drum Tower Hospital Clinical College of Nanjing Medical University, Nanjing 210008, China.,Department of Endocrinology, Drum Tower Hospital Affiliated to Nanjing University Medical School, Nanjing 210008, Jiangsu, China
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16
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Zhao J, Shi J, Shan Y, Yu M, Zhu X, Zhu Y, Liu L, Sheng M. Asiaticoside inhibits TGF-β1-induced mesothelial-mesenchymal transition and oxidative stress via the Nrf2/HO-1 signaling pathway in the human peritoneal mesothelial cell line HMrSV5. Cell Mol Biol Lett 2020; 25:33. [PMID: 32514269 PMCID: PMC7257216 DOI: 10.1186/s11658-020-00226-9] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Accepted: 05/08/2020] [Indexed: 12/12/2022] Open
Abstract
Background Peritoneal fibrosis (PF) is a frequent complication caused by peritoneal dialysis (PD). Peritoneal mesothelial cells (PMCs), the first barrier of the peritoneum, play an important role in maintaining structure and function in the peritoneum during PD. Mesothelial-mesenchymal transition (MMT) and oxidative stress of PMCs are two key processes of PF. Purpose To elucidate the efficacy and possible mechanism of asiaticoside inhibition of MMT and ROS generation in TGF-β1-induced PF in human peritoneal mesothelial cells (HPMCs). Methods MMT and ROS generation of HPMCs were induced by TGF-β1. To explain the anti-MMT and antioxidant role of asiaticoside, varied doses of asiaticoside, oxygen radical scavenger (NAC), TGF-β receptor kinase inhibitor (LY2109761) and Nrf2 inhibitor (ML385) were used separately. Immunoblots were used to detect the expression of signaling associated proteins. DCFH-DA was used to detect the generation of ROS. Transwell migration assay and wound healing assay were used to verify the capacity of asiaticoside to inhibit MMT. Immunofluorescence assay was performed to observe the subcellular translocation of Nrf2 and expression of HO-1. Results Asiaticoside inhibited TGF-β1-induced MMT and suppressed Smad signaling in a dose-dependent manner. Migration and invasion activities of HPMCs were decreased by asiaticoside. Asiaticoside decreased TGF-β1-induced ROS, especially in a high dose (150 μM) for 6 h. Furthermore, ML385 partly abolished the inhibitory effect of asiaticoside on MMT, ROS and p-Smad2/3. Conclusions Asiaticoside inhibited the TGF-β1-induced MMT and ROS via Nrf2 activation, thus protecting the peritoneal membrane and preventing PF.
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Affiliation(s)
- Junyi Zhao
- Renal Division, Affiliated Hospital of Nanjing University of Chinese Medicine, 155 Hanzhong Road, Nanjing, 210029 Jiangsu Province China
| | - Jun Shi
- Renal Division, Affiliated Hospital of Nanjing University of Chinese Medicine, 155 Hanzhong Road, Nanjing, 210029 Jiangsu Province China
| | - Yun Shan
- Renal Division, Affiliated Hospital of Nanjing University of Chinese Medicine, 155 Hanzhong Road, Nanjing, 210029 Jiangsu Province China
| | - Manshu Yu
- Renal Division, Affiliated Hospital of Nanjing University of Chinese Medicine, 155 Hanzhong Road, Nanjing, 210029 Jiangsu Province China
| | - Xiaolin Zhu
- Renal Division, Affiliated Hospital of Nanjing University of Chinese Medicine, 155 Hanzhong Road, Nanjing, 210029 Jiangsu Province China
| | - Yilin Zhu
- Renal Division, Affiliated Hospital of Nanjing University of Chinese Medicine, 155 Hanzhong Road, Nanjing, 210029 Jiangsu Province China
| | - Li Liu
- Renal Division, Affiliated Hospital of Nanjing University of Chinese Medicine, 155 Hanzhong Road, Nanjing, 210029 Jiangsu Province China
| | - Meixiao Sheng
- Renal Division, Affiliated Hospital of Nanjing University of Chinese Medicine, 155 Hanzhong Road, Nanjing, 210029 Jiangsu Province China
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17
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Zhou Y, Wang S, Zhao J, Fang P. Asiaticoside attenuates neonatal hypoxic-ischemic brain damage through inhibiting TLR4/NF-κB/STAT3 pathway. ANNALS OF TRANSLATIONAL MEDICINE 2020; 8:641. [PMID: 32566578 PMCID: PMC7290617 DOI: 10.21037/atm-20-3323] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Background Neonatal hypoxic ischemic encephalopathy (HIE) is currently a leading cause of neonatal death. Asiaticoside (AT), a bioactive constituent isolated from Centella asiatica, possesses numerous biological properties. For instance, previous studies showed that AT could protect ischemia hypoxia neurons by mediating BCL-2 protein. However, the roles and underlying mechanisms of AT in neonatal HIE have not been clarified. Methods Rice-Vannucci was applied to construct a hypoxic-ischemic brain damage (HIBD) model. Pathological damage of brain neuron tissue was determined by hematoxylin-eosin (HE) staining, while apoptosis was evaluated by terminal-deoxynucleoitidyl transferase nick end labeling (TUNEL) staining. Western blot and immunohistochemistry were applied to monitor related proteins levels. Enzyme-linked immunosorbent assay (ELISA) was conducted to measure the expression levels of inflammatory cytokines. Results The present study indicated that AT dose-dependently ameliorated histologic damage and inhibited apoptosis induced by hypoxic ischemia (HI) (P<0.01). AT also dose-dependently alleviated oxidative damage and reduced the levels of proinflammatory cytokines (ICAM-1, IL-18, and IL-1β) and TLR4 level. In terms of mechanism, decrease of TLR and IL-18 suppressed NF-κB phosphorylation and reduced the levels of TNFα, IL-6, and p-STAT3, leading to the inactivation of NF-κB/STAT3 pathway. Interestingly, with the addition of lipopolysaccharide (LPS), the increase of TLR4 activated NF-κB/STAT3 pathway again. Conclusions Collectively, the data provide insight into a novel mechanism by which AT may be an effective agent for HIE via the TLR4/NF-κB/STAT3 pathway.
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Affiliation(s)
- Yu Zhou
- Department of Pediatrics, Affiliated Hospital of North Sichuan Medical College, Nanchong 637000, China
| | - Si Wang
- Department of Pediatrics, Affiliated Hospital of North Sichuan Medical College, Nanchong 637000, China
| | - Jing Zhao
- Department of Pediatrics, Affiliated Hospital of North Sichuan Medical College, Nanchong 637000, China
| | - Ping Fang
- Department of Pediatrics, Affiliated Hospital of North Sichuan Medical College, Nanchong 637000, China
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18
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Shen H, Zhu F, Li J, Tang S, Zhang Y, Zhang J. Protective Effect of Asiaticoside on Radiation-induced Proliferation Inhibition and DNA Damage of Fibroblasts and Mice Death. Open Life Sci 2020; 15:145-151. [PMID: 33987471 PMCID: PMC8114779 DOI: 10.1515/biol-2020-0015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Accepted: 08/21/2019] [Indexed: 11/22/2022] Open
Abstract
Background Radiation-induced injuries (RII) mainly result from reactive oxygen species (ROS), which are harmful compounds that can damage DNA. Asiaticoside (AC), one of the main functional components extracted from Centella asiatica, has potent pharmacological effects such as anti-inflammatory and anti-oxidant activity. However, its role in RII remains unclear. Purpose The purpose of the current study is to investigate whether AC can mitigate RII in vitro and in vivo. Material and Methods Cell model of RII was successfully established by 5J/m2 radiation in vitro. For the in vivo RII model, mice were irradiated with 5 Gy to the thorax. The degree of damage to cells or mouse tissue was determined by measuring the numbers of DNA double-strand breaks (DSBs), oxidative stress, and mouse survival rates. Results In the in vitro assay, AC administration significantly reduced radiation-induced growth inhibition of Escherichia coli and fibroblasts, DSBs and apoptosis of fibroblasts; in the in vivo study, AC could decrease antioxidant capacity (T-AOC) of plasma and protect mice from RII, thereby improving the survival rates of mice after radiation. Conclusions These novel data indicate that AC is able to prevent radiation-initiated genotoxicity by mitigating DNA damage, and might serve as a safe and effective radio-protective agent.
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Affiliation(s)
- Haiyan Shen
- Department of Plastic Surgery, Affiliated Hangzhou People's Hospital Zhejiang University School of Medicine, Hangzhou, 310003, P.R. China
| | - Fei Zhu
- Department of Plastic Surgery, Affiliated Hangzhou People's Hospital Zhejiang University School of Medicine, Hangzhou, 310003, P.R. China
| | - Jinsheng Li
- Department of Plastic Surgery, Affiliated Hangzhou People's Hospital Zhejiang University School of Medicine, Hangzhou, 310003, P.R. China
| | - Songjia Tang
- Department of Plastic Surgery, Affiliated Hangzhou People's Hospital Zhejiang University School of Medicine, Hangzhou, 310003, P.R. China
| | - Yale Zhang
- Department of Plastic Surgery, Affiliated Hangzhou People's Hospital Zhejiang University School of Medicine, Hangzhou, 310003, P.R. China
| | - Jufang Zhang
- Department of Plastic Surgery, Affiliated Hangzhou People's Hospital Zhejiang University School of Medicine, Hangzhou, 310003, P.R. China
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19
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Kawao N, Takafuji Y, Ishida M, Okumoto K, Morita H, Muratani M, Kaji H. Roles of the vestibular system in obesity and impaired glucose metabolism in high-fat diet-fed mice. PLoS One 2020; 15:e0228685. [PMID: 32012199 PMCID: PMC6996831 DOI: 10.1371/journal.pone.0228685] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2019] [Accepted: 01/20/2020] [Indexed: 12/16/2022] Open
Abstract
The vestibular system controls balance, posture, blood pressure, and gaze. However, the roles of the vestibular system in energy and glucose metabolism remain unknown. We herein examined the roles of the vestibular system in obesity and impaired glucose metabolism using mice with vestibular lesions (VL) fed a high-sucrose/high-fat diet (HSHFD). VL was induced by surgery or arsenic. VL significantly suppressed body fat enhanced by HSHFD in mice. Glucose intolerance was improved by VL in mice fed HSHFD. VL blunted the levels of adipogenic factors and pro-inflammatory adipokines elevated by HSHFD in the epididymal white adipose tissue of mice. A β-blocker antagonized body fat and glucose intolerance enhanced by HSHFD in mice. The results of an RNA sequencing analysis showed that HSHFD induced alterations in genes, such as insulin-like growth factor-2 and glial fibrillary acidic protein, in the vestibular nuclei of mice through the vestibular system. In conclusion, we herein demonstrated that the dysregulation of the vestibular system influences an obese state and impaired glucose metabolism induced by HSHFD in mice. The vestibular system may contribute to the regulation of set points under excess energy conditions.
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Affiliation(s)
- Naoyuki Kawao
- Department of Physiology and Regenerative Medicine, Kindai University Faculty of Medicine, Osakasayama, Japan
| | - Yoshimasa Takafuji
- Department of Physiology and Regenerative Medicine, Kindai University Faculty of Medicine, Osakasayama, Japan
| | - Masayoshi Ishida
- Department of Physiology and Regenerative Medicine, Kindai University Faculty of Medicine, Osakasayama, Japan
| | - Katsumi Okumoto
- Life Science Research Institute, Kindai University, Osakasayama, Japan
| | - Hironobu Morita
- Department of Physiology, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Masafumi Muratani
- Department of Genome Biology, Faculty of Medicine, University of Tsukuba, Tsukuba, Japan
| | - Hiroshi Kaji
- Department of Physiology and Regenerative Medicine, Kindai University Faculty of Medicine, Osakasayama, Japan
- * E-mail:
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20
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Zhang C, Chen S, Zhang Z, Xu H, Zhang W, Xu D, Lin B, Mei Y. Asiaticoside Alleviates Cerebral Ischemia-Reperfusion Injury via NOD2/Mitogen-Activated Protein Kinase (MAPK)/Nuclear Factor kappa B (NF-κB) Signaling Pathway. Med Sci Monit 2020; 26:e920325. [PMID: 32006420 PMCID: PMC7009775 DOI: 10.12659/msm.920325] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Cerebral ischemia-reperfusion injury (CIRI) remains a serious health problem. Centella asiatica formulations are used to treat central nervous system disorders. In the present study, asiaticoside, an extract of the plant Centella asiatica, was investigated in CIRI in vivo and vitro. MATERIAL AND METHODS We made a CIRI model in vivo in SD rats treated by middle cerebral artery occlusion, and a cell model of ischemia-reperfusion injury was made in PC12 cells treated by deprivation of oxygen and glucose/restoration. CIRI in vivo was assessed by scores of neurological functions, encephaledema, and cerebral infarction area. Inflammation level and oxidative stress level were detected by the appropriate kits. TUNEL assay was performed for assessment of cell apoptosis and Western blot analysis was performed to assess protein expression levels. CCK8 assay was performed for evaluation of cell survival and flow cytometer was used to detect cell apoptosis in vitro. RESULTS Nervous function injury, brain edema, cell apoptosis, infarct size, apoptosis-related protein expressions, and protein expressions of the NOD2/MAPK/NF-kappaB signaling pathway in the CIRI model were all reversed by asiaticoside in rats. The cell apoptosis, inflammation level, and oxidative stress level in the model of cerebral ischemia-reperfusion injury were reduced by asiaticoside. The effects of asiaticoside on CIRI were reversed by NOD 2 agonists. CONCLUSIONS Asiaticoside showed a protective effect against cerebral ischemia-reperfusion injury via the NOD2/MAPK/NF-kappaB signaling pathway. These findings are vital for future research on use of asiaticoside in CIRI, providing a new avenue for alleviating CIRI.
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Affiliation(s)
- Chunhui Zhang
- Department of Clinical Nursing, Nursing and Health College of Zhengzhou University, Zhengzhou, Henan, China (mainland)
| | - Suyan Chen
- Department of Public Nursing, Nursing and Health College of Zhengzhou University, Zhengzhou, Henan, China (mainland)
| | - Zhenxiang Zhang
- Department of Fundamental Nursing, Nursing and Health College of Zhengzhou University, Zhengzhou, Henan, China (mainland)
| | - Hui Xu
- Department of Fundamental Nursing, Nursing and Health College of Zhengzhou University, Zhengzhou, Henan, China (mainland)
| | - Weihong Zhang
- Department of Basic Medicine, Nursing and Health College of Zhengzhou University, Zhengzhou, Henan, China (mainland)
| | - Dongqing Xu
- Rehabilitation Department, Henan Province Hospital of Traditional Chinese Medicine (TCM), Zhengzhou, Henan, China (mainland)
| | - Beilei Lin
- Department of Clinical Nursing, Nursing and Health College of Zhengzhou University, Zhengzhou, Henan, China (mainland)
| | - Yongxia Mei
- Department of Public Nursing, Nursing and Health College of Zhengzhou University, Zhengzhou, Henan, China (mainland)
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21
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Zhang J, Yao M, Jia X, Xie J, Wang Y. Hexokinase II Upregulation Contributes to Asiaticoside-Induced Protection of H9c2 Cardioblasts During Oxygen-Glucose Deprivation/Reoxygenation. J Cardiovasc Pharmacol 2019; 75:84-90. [PMID: 31569121 DOI: 10.1097/fjc.0000000000000754] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Asiaticoside (AS), one of the main functional components of Centella asiatica, has been reported to protect neurons from ischemia-hypoxia-induced injury. However, the role of AS in myocardial oxygen-glucose deprivation/reoxygenation (OGD/R) injury has not been investigated. The aim of this study was to investigate the role of AS in OGD/R-treated H9c2 cardiomyocytes and the underlying mechanism involved. Cell viability was detected using MTT assay. Cell apoptosis was measured using flow cytometry. The oxidative stress was assessed by detecting the malonaldehyde (MDA) content and activities of superoxide dismutase, glutathione peroxidase, and catalase (CAT). The glucose consumption and lactate production were determined to reflect glycolysis rate. The expression levels of hexokinase II (HK2) were detected using reverse transcription quantitative polymerase chain reaction and Western blot. H9c2 cells were transfected with small interfering RNA targeting HK2 (si-HK2) to knockdown HK2. Results showed that AS improved cell viability and inhibited apoptosis in OGD/R-injured H9c2 cells. AS pretreatment prevented OGD/R-induced oxidative stress, as evidenced by the decreased MDA content, and increased activities of superoxide dismutase, glutathione peroxidase, and CAT. The decreased glucose consumption and lactate production in OGD/R-injured H9c2 cells were reversed after AS treatment. Mechanically, AS induced the expression of HK2 in OGD/R-injured H9c2 cells. Knockdown of HK2 abolished the protective effects of AS on OGD/R-injured H9c2 cells. In conclusion, the protective effects of AS on cardiomyocytes from OGD/R-induced injury were mediated at least partly by upregulating HK2.
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Affiliation(s)
- Jing Zhang
- Deparment of Vasculocardiology, Affiliated Hospital of Hebei University, Baoding, China; and
| | - Mingyan Yao
- Department of Endocrinology, Baoding No.1 Central Hospital, Baoding, China
| | - Xinwei Jia
- Deparment of Vasculocardiology, Affiliated Hospital of Hebei University, Baoding, China; and
| | - Junmin Xie
- Deparment of Vasculocardiology, Affiliated Hospital of Hebei University, Baoding, China; and
| | - Yanfei Wang
- Deparment of Vasculocardiology, Affiliated Hospital of Hebei University, Baoding, China; and
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22
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Zhang X, Yu J. Baicalin attenuates gentamicin-induced cochlear hair cell ototoxicity. J Appl Toxicol 2019; 39:1208-1214. [PMID: 31021006 DOI: 10.1002/jat.3806] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2018] [Revised: 11/18/2018] [Accepted: 11/29/2018] [Indexed: 01/13/2023]
Abstract
Gentamicin can lead to cochlear hair cells associated ototoxicity by inducing apoptosis and oxidative stress, which can be alleviated by baicalin, one flavonoid extracted from the root of Scutellaria baicalensis. The role of baicalin in protecting gentamicin-induced hearing loss is unclear. Interference with oxidative stress was investigated in this study using House Ear Institute-Organ of Corti1 (HEI-OC1) cells, which were simultaneously treated with baicalin (0-400 μm) and gentamicin (0.2 or 1 mm). MTT was used to assay cell viability and apoptosis was detected with Annexin V-fluorescein isothiocyanate staining. The production of reactive oxygen species was indicated by 2,7-dichlorofluorescein diacetate fluorescence intensity and mitochondrial depolarization was assayed by JC1-mitochondrial membrane potential assay. Poly(ADP-ribose) polymerase (PARP), cleaved-caspase 3 and cleaved-PARP expression were analyzed with western blot. Baicalin improved the viability of HEI-OC1 cells and significantly reduced the oxidative stress and mitochondrial depolarization compared with the gentamicin treatment group. Gentamicin treatment increased the activation of PARP and caspase-3, while such an increase could be downregulated by baicalin. Baicalin attenuates gentamicin-induced cochlear hair cells ototoxicity, and such inhibition may be mediated by the regulation of reactive oxygen species production, mitochondrial depolarization, and caspase-3 and PARP activation.
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Affiliation(s)
- Xianfen Zhang
- Department of Otolaryngology, Yantaishan Hospital, Shandong, China
| | - Jun Yu
- Department of Otolaryngology, Yantai YEDA Hospital, Shandong, China
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Feng X, Huang D, Lin D, Zhu L, Zhang M, Chen Y, Wu F. Effects of Asiaticoside Treatment on the Survival of Random Skin Flaps in Rats. J INVEST SURG 2019; 34:107-117. [PMID: 30898065 DOI: 10.1080/08941939.2019.1584255] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Background: Asiaticoside (AS) is extracted from the traditional herbal medicine Centella asiatica, and has angiogenic, antioxidant, anti-inflammatory, and wound-healing effects. We investigated the effects of AS on skin flap survival. Methods: Dorsal McFarlane flaps were harvested from 36 rats and divided into two groups: an experimental group treated with 40 mg/kg AS administered orally once daily, and a control group administered normal saline in an identical manner. On day 2, superoxide dismutase (SOD) and malondialdehyde (MDA) levels, and production of the cytokines tumor necrosis factor-α and interleukin (IL)-6 were evaluated. On day 7, tissue slices were stained with hematoxylin and eosin. The expression of vascular endothelial growth factor (VEGF), IL-6, and IL-1β were immunohistochemically evaluated. Microcirculatory flow was measured using laser Doppler flowmetry. Flap angiography, using the lead oxide-gelatin injection technique, was performed with the aid of a soft X-ray machine. Results: The AS group exhibited greater mean flap survival area, improved microcirculatory flow, and higher expression levels of SOD and VEGF compared with the control group. However, MDA levels and the inflammatory response were significantly reduced. Conclusions: AS exhibits promise as a therapeutic option due to its effects on the viability and function of random skin flaps in rats.
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Affiliation(s)
- Xiguang Feng
- Department of Orthopedics, People's Hospital of YingDe City Guangdong Province, Yingde City, China
| | - Dong Huang
- Department of Traumatology, Guangdong Second Provincial General Hospital, Guangzhou, China
| | - Dingsheng Lin
- Department of Hand and Plastic Surgery, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Lilin Zhu
- Department of Traumatology, Guangdong Second Provincial General Hospital, Guangzhou, China
| | - Min Zhang
- Department of Orthopedics, People's Hospital of YingDe City Guangdong Province, Yingde City, China
| | - Yi Chen
- Department of Orthopedics, People's Hospital of YingDe City Guangdong Province, Yingde City, China
| | - Fanyu Wu
- Department of Orthopedics, People's Hospital of YingDe City Guangdong Province, Yingde City, China
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Wang Q, Liu C. Protective effects of quercetin against brain injury in a rat model of lipopolysaccharide-induced fetal brain injury. Int J Dev Neurosci 2018; 71:175-180. [PMID: 30282008 DOI: 10.1016/j.ijdevneu.2018.09.008] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Revised: 09/16/2018] [Accepted: 09/26/2018] [Indexed: 12/16/2022] Open
Abstract
Maternal exposure to lipopolysaccharide (LPS), a bacterial endotoxin produced during infection, leads to disruption in fetal brain development and causes newborn brain injury. Quercetin (QR) is a multipotent flavonoid that functions as an antioxidant and protects against inflammation and neurodegeneration. In this study, we explored the potential functions of QR in alleviating maternal LPS exposure induced fetal brain damage. Pregnant rats at late gestational stages were treated with saline, LPS, QR, LPS and QR. Brain injury biomarker TGF-1β was assessed in cerebrospinal fluid (CSF) and brain tissue of newborn rats. Pro-inflammatory cytokines, apoptosis markers and oxidative stress indicators were evaluated. We found that LPS treatment induced an increased production of TGF-1β which was suppressed by QR administration. LPS enhanced pro-apoptotic Bax and inhibited anti-apoptotic Bcl-2 expression. QR reduced that ratio of Bax and Bcl-2 that was high in LPS treated brain tissue. Additionally, QR suppressed oxidative stress induced by LPS. Finally, QR reduced the levels of pro-inflammatory cytokines that were produced as a result of LPS exposure. In summary, our study indicates that QR potently alleviates maternal LPS exposure induced fetal brain injury in rats, making it a potential therapeutic for suppressing infant brain damage as a result of maternal infection.
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Affiliation(s)
- Qian Wang
- Department of Traditional Chinese Medicine, Daqing Oilfields General Hospital, No. 9 Zhongkang Road, Daqing, 163000, Heilongjiang, China.
| | - Cong Liu
- Department of Traditional Chinese Medicine, Daqing Oilfields General Hospital, No. 9 Zhongkang Road, Daqing, 163000, Heilongjiang, China
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Dong B. Protective Effects of Sinomenine Against Ankylosing Spondylitis and the Underlying Molecular Mechanisms. Med Sci Monit 2018; 24:3631-3636. [PMID: 29849019 PMCID: PMC6007288 DOI: 10.12659/msm.907589] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND This study aimed to investigate the effect and underlying molecular mechanism of sinomenine (SIN) on ankylosing spondylitis (AS). MATERIAL AND METHODS To study the potential role of SIN in the pathogenesis of AS, an AS mouse model was established and mice were treated with different concentrations of SIN (10, 30, and 50 mg/kg, administered intraperitoneally). Markers of inflammation and oxidative stress were determined by ELISA assay. Western blot analysis and qRT-PCR were used to quantify the levels of related proteins and gene mRNA expression. RESULTS The results suggest that AS mice has higher levels of TNF-α, IL-1β, and IL-6 (p<0.01 for all), and lower levels of superoxide dismutase (SOD), catalase (CAT), and glutathione peroxidase (GSH-PX) (p<0.01 for all). SIN treatment reduced the level of TNF-α, IL-1β, and IL-6 in a dose-dependent manner, and the levels of SOD, CAT, and GSH-PX were dose-dependently increased (p<0.05 for all). The results also revealed that NF-κBp65 expression decreased, while the level of IkB increased, in a dose-dependent manner, after SIN treatment in AS mice (p<0.05 for all). The level of p-p38 was dose-dependently reduced in AS mice by SIN treatment (p<0.05). Moreover, SIN inhibited Cox-2 expression in AS mice in a dose-dependent manner (p<0.05). CONCLUSIONS SIN has a beneficial role in AS through suppressing inflammatory mediators and by down-regulating oxidative stress via inhibiting the MAPKp38/NF-kB pathway and Cox-2 expression.
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Affiliation(s)
- Bo Dong
- Department of Orthopedics, No. 2 Ward of Traditional Chinese Medicine, Honghui Hospital, Xi'an Jiaotong University, Xi'an, Shaanxi, China (mainland)
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Zhao P, Zhao C, Li X, Gao Q, Huang L, Xiao P, Gao W. The genus Polygonatum : A review of ethnopharmacology, phytochemistry and pharmacology. JOURNAL OF ETHNOPHARMACOLOGY 2018; 214:274-291. [PMID: 29246502 DOI: 10.1016/j.jep.2017.12.006] [Citation(s) in RCA: 168] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2017] [Revised: 12/08/2017] [Accepted: 12/08/2017] [Indexed: 05/09/2023]
Affiliation(s)
- Ping Zhao
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China.
| | - Chengcheng Zhao
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China.
| | - Xia Li
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China.
| | - Qingzhi Gao
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China.
| | - Luqi Huang
- National Resource Center for Chinese Materia Medica, Academy of Chinese Medical Sciences, Beijing 100700, China.
| | - Peigen Xiao
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100193, China.
| | - Wenyuan Gao
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China.
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Song D, Jiang X, Liu Y, Sun Y, Cao S, Zhang Z. Asiaticoside Attenuates Cell Growth Inhibition and Apoptosis Induced by Aβ 1-42 via Inhibiting the TLR4/NF-κB Signaling Pathway in Human Brain Microvascular Endothelial Cells. Front Pharmacol 2018; 9:28. [PMID: 29441018 PMCID: PMC5797575 DOI: 10.3389/fphar.2018.00028] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2017] [Accepted: 01/10/2018] [Indexed: 12/13/2022] Open
Abstract
Alzheimer's disease (AD) is a very common progressive neurodegenerative disorder with the highest incidence in the world. Dysfunction of the blood-brain barrier (BBB) may be responsible for the pathogenesis and pathology of AD for abnormally transporting amyloid-β (Aβ, the main component of the senile plaques) from the sera into the central nervous system. Aβ peptides induce apoptosis in human brain microvascular endothelial cells (hBMECs), the main component of BBB. Apoptosis in neuronal cells plays a critical role in the pathogenesis of AD. Asiaticoside, a natural glycoside extracted from Centella asiatica (L.) Urban, has an anti-apoptotic effect on hBMECs but the molecule mechanism remains unclear. Therefore, we investigate the protective effect of asiaticoside on Aβ1-42-induced cytotoxicity and apoptosis as well as associated mechanism in hBMECs with commonly used in vitro methods for clinical development of asiaticoside as a novel anti-AD agent. In the present study, we investigated the effects of asiaticoside on cytotoxicity by Cell Counting Kit-8 assay, mitochondrial membrane potential by JC-1 fluorescence analysis, anti-apoptosis by Hoechst 33258 staining and Annexin V-FITC (fluorescein isothiocyanate) and propidium iodide (PI) analyses, the expressions of TNF-α and IL-6 by enzyme-linked immunosorbent assay (ELISA) and TLR4, MyD88, TRAF6, p-NF-κB p65, and total NF-κB p65 by Western blotting, and nuclear translocation of NF-κB p65 by immunofluorescence analysis in hBMECs. The results showed that pretreatment of asiaticoside (25, 50, and 100 μM) for 12 h significantly attenuated cell growth inhibition and apoptosis, and restored declined mitochondrial membrane potential induced by Aβ1-42 (50 μM) in hBMECs. Asiaticoside also significantly downregulated the elevated expressions of TNF-α, IL-6, TLR4, MyD88, TRAF6, and p-NF-κB p65, as well as inhibited NF-κB p65 translocation from cytoplasm to nucleus induced by Aβ1-42 in hBMECs in a concentration-dependent manner. The possible underlying molecular mechanism of asiaticoside may be through inhibiting the TLR4/NF-κB signaling pathway. Therefore, asiaticoside may be developed as a novel agent for the prevention and/or treatment of AD clinically.
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Affiliation(s)
- Daqiang Song
- Department of Pharmacology, Southwest Medical University, Luzhou, China
| | - Xian Jiang
- Department of Anesthesiology, The Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Yiliu Liu
- Department of Pharmacology, Southwest Medical University, Luzhou, China
| | - Yuhong Sun
- Department of Pharmacology, Southwest Medical University, Luzhou, China
| | - Shousong Cao
- Department of Pharmacology, Southwest Medical University, Luzhou, China
| | - Zhuo Zhang
- Department of Pharmacology, Southwest Medical University, Luzhou, China
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Niihata K, Takahashi S, Kurita N, Yajima N, Omae K, Fukuma S, Okano T, Nomoto Y, Omori K, Fukuhara S. Association Between Accumulation of Advanced Glycation End-Products and Hearing Impairment in Community-Dwelling Older People: A Cross-Sectional Sukagawa Study. J Am Med Dir Assoc 2017; 19:235-239.e1. [PMID: 29079032 DOI: 10.1016/j.jamda.2017.09.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2017] [Revised: 09/12/2017] [Accepted: 09/13/2017] [Indexed: 02/03/2023]
Abstract
OBJECTIVES The experimental studies suggested the hypothesis that the accumulation of advanced glycation end-products (AGEs) could induce hearing impairment. The purpose of this study is to examine the hypothesis among elderly people using an epidemiologic approach. DESIGN Cross-sectional study. SETTING Sukagawa City, Fukushima, Japan. PARTICIPANTS A total of 270 residents aged 75 years or over without dementia, who participated in a health check-up conducted in 2015. MEASUREMENTS The exposure variable was AGEs, which was assessed using skin autofluorescence (AF) as a proxy measure. The primary outcome was moderate hearing impairment or worse, which was defined as a pure tone average of thresholds ≥41 decibel hearing level at 0.5, 1, 2, and 4 kHz in the better-hearing ear. The secondary outcome was the pure tone average of thresholds as a continuous variable. We estimated the odds ratio using a logistic regression model for the primary outcome and a general linear model for the mean difference in the pure tone average of thresholds for the secondary outcome. Both models were adjusted for relevant confounding factors: age, sex, smoking, diabetes, hypertension, and history of cerebrovascular diseases. RESULTS The median (interquartile range) AF was 2.2 (2.0, 2.5) arbitrary units (AU). Moderate hearing impairment was reported in 88 participants (32.6%). For the primary outcome, we found significant associations between moderate hearing impairment and AF (adjusted odds ratio per 1 AU, 2.60; 95% confidence interval 1.26-5.35). For the secondary outcome, we also found a significant association between a 1-AU increase in AF and increased pure tone average, with a difference (6.52 dB per 1 AU; 95% confidence interval 2.18-10.86) comparable in magnitude to the increase in pure tone average observed for a 6-year increase in age in our population. CONCLUSIONS Our study indicated that high levels of AGEs were independently associated with hearing impairment. Modifying levels of AGEs may prevent hearing impairment.
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Affiliation(s)
- Kakuya Niihata
- Department of Clinical Epidemiology, Fukushima Medical University, Fukushima City, Fukushima, Japan; Center for Innovative Research for Communities and Clinical Excellence (CiRC(2)LE), Fukushima Medical University, Fukushima City, Fukushima, Japan
| | - Sei Takahashi
- Center for Innovative Research for Communities and Clinical Excellence (CiRC(2)LE), Fukushima Medical University, Fukushima City, Fukushima, Japan; Department of Healthcare Epidemiology, School of Public Health in the Graduate School of Medicine, Kyoto University, Kyoto City, Kyoto, Japan
| | - Noriaki Kurita
- Center for Innovative Research for Communities and Clinical Excellence (CiRC(2)LE), Fukushima Medical University, Fukushima City, Fukushima, Japan; Department of Innovative Research and Education for Clinicians and Trainees (DiRECT), Fukushima Medical University Hospital, Fukushima City, Fukushima, Japan.
| | - Nobuyuki Yajima
- Center for Innovative Research for Communities and Clinical Excellence (CiRC(2)LE), Fukushima Medical University, Fukushima City, Fukushima, Japan; Department of Healthcare Epidemiology, School of Public Health in the Graduate School of Medicine, Kyoto University, Kyoto City, Kyoto, Japan; Division of Rheumatology, Department of Medicine, Showa University School of Medicine, Tokyo, Japan
| | - Kenji Omae
- Center for Innovative Research for Communities and Clinical Excellence (CiRC(2)LE), Fukushima Medical University, Fukushima City, Fukushima, Japan; Department of Healthcare Epidemiology, School of Public Health in the Graduate School of Medicine, Kyoto University, Kyoto City, Kyoto, Japan; Department of Innovative Research and Education for Clinicians and Trainees (DiRECT), Fukushima Medical University Hospital, Fukushima City, Fukushima, Japan
| | - Shingo Fukuma
- Center for Innovative Research for Communities and Clinical Excellence (CiRC(2)LE), Fukushima Medical University, Fukushima City, Fukushima, Japan; Department of Healthcare Epidemiology, School of Public Health in the Graduate School of Medicine, Kyoto University, Kyoto City, Kyoto, Japan
| | - Takayuki Okano
- Department of Otolaryngology, Head and Neck Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Kyoto-city, Japan
| | - Yukio Nomoto
- Department of Otolaryngology, Ohara General Hospital, Fukushima City, Fukushima, Japan
| | - Koichi Omori
- Department of Otolaryngology, Head and Neck Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Kyoto-city, Japan; Department of General Medicine, Shirakawa Satellite Teaching and Research (STAR), Fukushima Medical University, Shirakawa City, Fukushima, Japan
| | - Shunichi Fukuhara
- Center for Innovative Research for Communities and Clinical Excellence (CiRC(2)LE), Fukushima Medical University, Fukushima City, Fukushima, Japan; Department of Healthcare Epidemiology, School of Public Health in the Graduate School of Medicine, Kyoto University, Kyoto City, Kyoto, Japan; Department of General Medicine, Shirakawa Satellite Teaching and Research (STAR), Fukushima Medical University, Shirakawa City, Fukushima, Japan
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