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Xia C, Zhou M, Dong X, Zhao Y, Jiang M, Zhu G, Zhang Z. Ginkgo biloba extract inhibits hippocampal neuronal injury caused by mitochondrial oxidative stress in a rat model of Alzheimer's disease. PLoS One 2024; 19:e0307735. [PMID: 39106233 DOI: 10.1371/journal.pone.0307735] [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: 07/15/2023] [Accepted: 07/09/2024] [Indexed: 08/09/2024] Open
Abstract
Ginkgo biloba extracts (GBE) have been shown to effectively improve cognitive function in patients with Alzheimer's disease (AD). One potential therapeutic strategy for AD is to prevent loss of adult hippocampal neurons. While recent studies have reported that GBE protects against oxidative stress in neurons, the underlying mechanisms remain unclear. In this study, an AD-like rat model was established via bidirectional injection of amyloid beta 25-35 (Aβ25-35; 20 μg) in the hippocampal CA1 region. Learning and memory abilities of experimental rats were AD assessed in response to oral administration of 7.5 g/L or 15 g/L Ginkgo biloba extract 50 (GBE50) solution and the peroxidation phenomenon of hippocampal mitochondria determined via analysis of mitochondrial H2O2 and several related enzymes. Levels of the oxidative stress-related signaling factor cytochrome C (Cyto C), apoptosis-related proteins (Bax, Bcl-2 and caspase-3) and caspase-activated DNase (CAD) were further detected via western blot. 8-Hydroxydeoxyguanosine (8-OHdG), the major product of DNA oxidative stress, was evaluated to analyze DNA status. Our results showed elevated H2O2 levels and monoamine oxidase (MAO) activity, and conversely, a decrease in the activities of superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px) in the hippocampus of AD rats. Administration of GBE50 regulated the activities of these three enzymes and induced a decrease in H2O2. GBE50 exerted regulatory effects on abnormally expressed apoptotic proteins in the AD rat hippocampus, enhancing the expression of Bcl-2, inhibiting release of Cyto C from mitochondria, and suppressing the level of caspase-3 (excluding cleaved caspase-3). Furthermore, GBE50 inhibited DNA damage by lowering the generation of 8-OHdG rather than influencing expression of CAD. The collective findings support a protective role of GBE50 in hippocampal neurons of AD-like animals against mitochondrial oxidative stress.
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Affiliation(s)
- Chenyi Xia
- School of Integrative Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Mingmei Zhou
- Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Xianwen Dong
- Department of Children Rehabilitation Medicine, The Fifth Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Yan Zhao
- School of Integrative Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Meifang Jiang
- SPH XingLing Sci. & Tech. Pharmaceutical Co., Ltd., Shanghai, China
| | - Guoqin Zhu
- SPH XingLing Sci. & Tech. Pharmaceutical Co., Ltd., Shanghai, China
| | - Zhixiong Zhang
- School of Integrative Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
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Mao Y, Zha Y, Zang Y, Gao Y, Sun J, Liu Y, Wang Z, Wei Z, Wang M, Yang Y. Isorhamnetin improves diabetes-induced erectile dysfunction in rats through activation of the PI3K/AKT/eNOS signaling pathway. Biomed Pharmacother 2024; 177:116987. [PMID: 38897159 DOI: 10.1016/j.biopha.2024.116987] [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: 04/07/2024] [Revised: 06/01/2024] [Accepted: 06/15/2024] [Indexed: 06/21/2024] Open
Abstract
Erectile dysfunction is a complex and common complication of diabetes mellitus, which lacks an effective treatment. The repairing role of vascular endothelium is the current research hotspot of diabetic mellitus erectile dysfunction (DMED), and the activation of PI3K/AKT/eNOS pathway positively affects the repair of vascular endothelium. The herbal extract isorhamnetin has significant vasoprotective effects and has great potential in treating DMED. This study aimed to clarify whether isorhamnetin has an ameliorative effect on DMED and to investigate the modulation of the PI3K/AKT/eNOS signaling pathway by isorhamnetin to discover its potential mechanism of action. In vivo experiments were performed using a streptozotocin-induced diabetic rat model, and efficacy was assessed after 4 weeks of isorhamnetin gavage administration at 10 mg/kg or 20 mg/kg. Erectile function in rats was assessed by maximum intracavernous pressure/mean arterial pressure (ICPmax/MAP), and changes in corpus cavernosum (CC) fibrosis, inflammation levels, oxidative stress levels, and apoptosis were assessed by molecular biology techniques. In vitro experiments using high glucose-induced corpus cavernosum endothelial cells were performed to further validate the anti-apoptotic effect of isorhamnetin and its regulation of the PI3K/AKT/eNOS pathway. The findings demonstrated that isorhamnetin enhanced erectile function, decreased collagen content, and increased smooth muscle content in the CC of diabetic rats. In addition, isorhamnetin decreased the serum levels of pro-inflammatory factors IL-6, TNF-α, and IL-1β, increased the levels of anti-inflammatory factors IL-10 and IL-4, increased the activities of SOD, GPx, and CAT as well as the levels of NO, and decreased the levels of MDA in corpus cavernosum tissues. Isorhamnetin also increased the content of CD31 in CC tissues of diabetic rats, activated the PI3K/AKT/eNOS signaling pathway, and inhibited apoptosis. In conclusion, isorhamnetin exerts a protective effect on erectile function in diabetic rats by reducing the inflammatory response, attenuating the level of oxidative stress and CC fibrosis, improving the endothelial function and inhibiting apoptosis. The mechanism underlying these effects may be linked to the activation of the PI3K/AKT/eNOS pathway.
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Affiliation(s)
- Yinhui Mao
- Changchun University of Chinese Medicine, Changchun 130117, China
| | - Yarong Zha
- Changchun University of Chinese Medicine, Changchun 130117, China
| | - Yueyue Zang
- Changchun University of Chinese Medicine, Changchun 130117, China
| | - Yanan Gao
- Changchun University of Chinese Medicine, Changchun 130117, China
| | - Juntao Sun
- Changchun University of Chinese Medicine, Changchun 130117, China
| | - Yang Liu
- Changchun University of Chinese Medicine, Changchun 130117, China
| | - Zhuo Wang
- Changchun University of Chinese Medicine, Changchun 130117, China
| | - Zhitao Wei
- Department of Urology, The Affiliated Hospital of Changchun University of Chinese Medicine, Changchun 130021, China
| | - Mingxing Wang
- The Affiliated Hospital of Changchun University of Chinese Medicine, Changchun 130021, China.
| | - Yong Yang
- Changchun University of Chinese Medicine, Changchun 130117, China; Department of Urology, The Affiliated Hospital of Changchun University of Chinese Medicine, Changchun 130021, China.
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Lin QR, Jia LQ, Lei M, Gao D, Zhang N, Sha L, Liu XH, Liu YD. Natural products as pharmacological modulators of mitochondrial dysfunctions for the treatment of diabetes and its complications: An update since 2010. Pharmacol Res 2024; 200:107054. [PMID: 38181858 DOI: 10.1016/j.phrs.2023.107054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Revised: 12/12/2023] [Accepted: 12/31/2023] [Indexed: 01/07/2024]
Abstract
Diabetes, characterized as a well-known chronic metabolic syndrome, with its associated complications pose a substantial and escalating health and healthcare challenge on a global scale. Current strategies addressing diabetes are mainly symptomatic and there are fewer available curative pharmaceuticals for diabetic complications. Thus, there is an urgent need to identify novel pharmacological targets and agents. The impaired mitochondria have been associated with the etiology of diabetes and its complications, and the intervention of mitochondrial dysfunction represents an attractive breakthrough point for the treatments of diabetes and its complications. Natural products (NPs), with multicenter characteristics, multi-pharmacological activities and lower toxicity, have been caught attentions as the modulators of mitochondrial functions in the therapeutical filed of diabetes and its complications. This review mainly summarizes the recent progresses on the potential of 39 NPs and 2 plant-extracted mixtures to improve mitochondrial dysfunction against diabetes and its complications. It is expected that this work may be useful to accelerate the development of innovative drugs originated from NPs and improve upcoming therapeutics in diabetes and its complications.
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Affiliation(s)
- Qian-Ru Lin
- Department of Neuroendocrine Pharmacology, School of Pharmacy, China Medical University, Shenyang, Liaoning 110122, China
| | - Lian-Qun Jia
- Key Laboratory of Ministry of Education for TCM Viscera-State Theory and Applications, Liaoning University of Traditional Chinese Medicine, Shenyang, Liaoning 116600, China
| | - Ming Lei
- Key Laboratory of Medical Electrophysiology, Ministry of Education & Medical Electrophysiological Key Laboratory of Sichuan Province, Institute of Cardiovascular Research, Southwest Medical University, Luzhou 646000, China
| | - Di Gao
- Department of Neuroendocrine Pharmacology, School of Pharmacy, China Medical University, Shenyang, Liaoning 110122, China
| | - Nan Zhang
- Department of Neuroendocrine Pharmacology, School of Pharmacy, China Medical University, Shenyang, Liaoning 110122, China
| | - Lei Sha
- Department of Neuroendocrine Pharmacology, School of Pharmacy, China Medical University, Shenyang, Liaoning 110122, China
| | - Xu-Han Liu
- Department of Endocrinology, Dalian Municipal Central Hospital, Dalian, Liaoning 116033, China.
| | - Yu-Dan Liu
- Department of Neuroendocrine Pharmacology, School of Pharmacy, China Medical University, Shenyang, Liaoning 110122, China.
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Li MT, Ke J, Guo SF, Shan LL, Gong JH, Qiao TC, Tian HY, Wu Y, Peng ZY, Zeng XQ, Han Y. Huzhangqingmaiyin protected vascular endothelial cells against cerebral small vessel disease through inhibiting inflammation. JOURNAL OF ETHNOPHARMACOLOGY 2024; 318:116905. [PMID: 37442491 DOI: 10.1016/j.jep.2023.116905] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Revised: 07/09/2023] [Accepted: 07/10/2023] [Indexed: 07/15/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Huzhangqingmaiyin (HZQMY) is a Chinese medicine formula used to treat small vessel disease, but the mechanism is unclear. AIM OF THE STUDY This study aimed to reveal the protective effects of HZQMY on human brain microvascular endothelial cells (HBMECs) and explore the potential targets and mechanistic pathways using network pharmacology on treating cerebral small vessel disease (CSVD). MATERIALS AND METHODS HBMECs were cultured in vitro and an endothelial cell injury model was constructed by hypoxia for 12 h followed by reoxygenation for 8 h (H/R). Cell viability was measured by CCK-8 assay, migration ability of cells was detected by scratch assay, angiogenesis ability of endothelial cells was detected by tubulogenesis assay. Meanwhile, JC-1 staining was employed to determine the alteration of mitochondrial membrane potential, and finally, cell apoptosis was assessed by flow cytometry. To further explore the mechanism of action of HZQMY, the target proteins of a candidate active compound was first collected from the traditional Chinese medicine systems pharmacology database with analytical platform and Swiss target prediction database (www.swisstargetprediction.ch) by HPLC/MS determination of its main active components. CSVD associated targets were retrieved from four disease associated targets databases, OMIM, DisGenNET, GeneCards and GeneCLip, respectively. Using the website String, the genes overlapped between HZQMY and CSVD were imported into the database, PPI network plots were drawn using Cytoscape software. GO and KEGG analyses were performed to explore the possible pathways and targets of HZQMY. Its most probable targets were further explored with molecular docking and verified. RESULTS HZQMY at 0.5-2 μg/mL concentration range could promote cell proliferation, cell migration, angiogenesis, reduce mitochondrial membrane potential damage as well as inhibit apoptosis. Besides that, 29 active compounds were detected from HZQMY, including key components such as quercetin, polydatin, kaempferol, isorhamnetin and resveratrol. Core targets that might include IL-1β、ICAM-1、VCAM-1 and VEGF and so on. CONCLUSIONS HZQMY could regulate the levels of key targets such as IL-1β、ICAM-1、VCAM-1 and VEGF, so as to achieve the purpose of treating CSVD.
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Affiliation(s)
- Meng-Ting Li
- Department of Neurology, Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, 200437, China
| | - Jia Ke
- Department of Neurology, Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, 200437, China
| | - Shu-Fen Guo
- Department of Neurology, Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, 200437, China
| | - Li-Li Shan
- Department of Neurology, Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, 200437, China
| | - Jia-Hao Gong
- Shanghai Frontiers Science Center of TCM Chemical Biology, Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Tian-Ci Qiao
- Department of Neurology, Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, 200437, China
| | - Hao-Yu Tian
- Department of Neurology, Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, 200437, China
| | - Yang Wu
- Department of Neurology, Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, 200437, China
| | - Zheng-Yu Peng
- Department of Neurology, Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, 200437, China
| | - Xue-Qian Zeng
- Department of Neurology, Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, 200437, China
| | - Yan Han
- Department of Neurology, Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, 200437, China.
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Berends E, van Oostenbrugge RJ, Foulquier S, Schalkwijk CG. Methylglyoxal, a highly reactive dicarbonyl compound, as a threat for blood brain barrier integrity. Fluids Barriers CNS 2023; 20:75. [PMID: 37875994 PMCID: PMC10594715 DOI: 10.1186/s12987-023-00477-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Accepted: 10/10/2023] [Indexed: 10/26/2023] Open
Abstract
The brain is a highly metabolically active organ requiring a large amount of glucose. Methylglyoxal (MGO), a by-product of glucose metabolism, is known to be involved in microvascular dysfunction and is associated with reduced cognitive function. Maintenance of the blood-brain barrier (BBB) is essential to maintain optimal brain function and a large amount of evidence indicates negative effects of MGO on BBB integrity. In this review, we summarized the current literature on the effect of MGO on the different cell types forming the BBB. BBB damage by MGO most likely occurs in brain endothelial cells and mural cells, while astrocytes are most resistant to MGO. Microglia on the other hand appear to be not directly influenced by MGO but rather produce MGO upon activation. Although there is clear evidence that MGO affects components of the BBB, the impact of MGO on the BBB as a multicellular system warrants further investigation. Diminishing MGO stress can potentially form the basis for new treatment strategies for maintaining optimal brain function.
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Affiliation(s)
- Eline Berends
- Department of Internal Medicine, Maastricht University, Universiteitssingel, Maastricht, 50 6229ER, The Netherlands
- Cardiovascular Research Institute Maastricht (CARIM), Maastricht University, Universiteitssingel 50, Maastricht, 6229ER, The Netherlands
| | - Robert J van Oostenbrugge
- Cardiovascular Research Institute Maastricht (CARIM), Maastricht University, Universiteitssingel 50, Maastricht, 6229ER, The Netherlands
- School for Mental Health and Neuroscience (MHeNs), Maastricht University, Universiteitssingel 40, Maastricht, 6229ER, The Netherlands
- Department of Neurology, Maastricht University Medical Centre (MUMC+), P. Debyelaan 25 6202AZ, Maastricht, The Netherlands
| | - Sébastien Foulquier
- Cardiovascular Research Institute Maastricht (CARIM), Maastricht University, Universiteitssingel 50, Maastricht, 6229ER, The Netherlands.
- Department of Neurology, Maastricht University Medical Centre (MUMC+), P. Debyelaan 25 6202AZ, Maastricht, The Netherlands.
- Department of Pharmacology and Toxicology, Maastricht University, Universiteitssingel 50 6229ER, Maastricht, The Netherlands.
| | - Casper G Schalkwijk
- Department of Internal Medicine, Maastricht University, Universiteitssingel, Maastricht, 50 6229ER, The Netherlands.
- Cardiovascular Research Institute Maastricht (CARIM), Maastricht University, Universiteitssingel 50, Maastricht, 6229ER, The Netherlands.
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Akanchise T, Angelova A. Ginkgo Biloba and Long COVID: In Vivo and In Vitro Models for the Evaluation of Nanotherapeutic Efficacy. Pharmaceutics 2023; 15:pharmaceutics15051562. [PMID: 37242804 DOI: 10.3390/pharmaceutics15051562] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2023] [Revised: 05/17/2023] [Accepted: 05/19/2023] [Indexed: 05/28/2023] Open
Abstract
Coronavirus infections are neuroinvasive and can provoke injury to the central nervous system (CNS) and long-term illness consequences. They may be associated with inflammatory processes due to cellular oxidative stress and an imbalanced antioxidant system. The ability of phytochemicals with antioxidant and anti-inflammatory activities, such as Ginkgo biloba, to alleviate neurological complications and brain tissue damage has attracted strong ongoing interest in the neurotherapeutic management of long COVID. Ginkgo biloba leaf extract (EGb) contains several bioactive ingredients, e.g., bilobalide, quercetin, ginkgolides A-C, kaempferol, isorhamnetin, and luteolin. They have various pharmacological and medicinal effects, including memory and cognitive improvement. Ginkgo biloba, through its anti-apoptotic, antioxidant, and anti-inflammatory activities, impacts cognitive function and other illness conditions like those in long COVID. While preclinical research on the antioxidant therapies for neuroprotection has shown promising results, clinical translation remains slow due to several challenges (e.g., low drug bioavailability, limited half-life, instability, restricted delivery to target tissues, and poor antioxidant capacity). This review emphasizes the advantages of nanotherapies using nanoparticle drug delivery approaches to overcome these challenges. Various experimental techniques shed light on the molecular mechanisms underlying the oxidative stress response in the nervous system and help comprehend the pathophysiology of the neurological sequelae of SARS-CoV-2 infection. To develop novel therapeutic agents and drug delivery systems, several methods for mimicking oxidative stress conditions have been used (e.g., lipid peroxidation products, mitochondrial respiratory chain inhibitors, and models of ischemic brain damage). We hypothesize the beneficial effects of EGb in the neurotherapeutic management of long-term COVID-19 symptoms, evaluated using either in vitro cellular or in vivo animal models of oxidative stress.
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Affiliation(s)
- Thelma Akanchise
- Université Paris-Saclay, CNRS, Institut Galien Paris-Saclay, 91400 Orsay, France
| | - Angelina Angelova
- Université Paris-Saclay, CNRS, Institut Galien Paris-Saclay, 91400 Orsay, France
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Lin H, Li W, Shen Z, Bei Y, Wei T, Yu Z, Dai Y, Dai H. Annexin A2 promotes angiogenesis after ischemic stroke via annexin A2 receptor - AKT/ERK pathways. Neurosci Lett 2023; 792:136941. [PMID: 36367512 DOI: 10.1016/j.neulet.2022.136941] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 08/16/2022] [Accepted: 10/25/2022] [Indexed: 11/07/2022]
Abstract
Promoting angiogenesis to restore circulation to the ischemic tissue is still an important therapeutic target in stroke. Our group and others previously reported that the Ca2+-regulated, phospholipid-and membrane-binding protein-Annexin A2 (ANXA2) functions in cerebrovascular integrity and retinal neoangiogenesis. Here, we hypothesized that ANXA2 may regulate angiogenesis after stroke, ultimately improve neurological outcomes. Compared with wild type (WT) mice, the density of microvessels in brain and the number of new vessels sprouting from aortic ring were significantly increased in Anxa2 knock-in (Anxa2 KI) mice. After focal cerebral ischemia, proliferation of brain endothelial cells in Anxa2 KI mice was significantly elevated at 7 days post-stroke, which further improved behavioral recovery. To assess the pro-angiogenic mechanisms of ANXA2, we used brain endothelial cells cultures to investigate its effects on cell tube-numbers and migration. Recombinant ANXA2 increased tube-numbers and migration of brain endothelial cells either under normal condition or after oxygen glucose deprivation (OGD) injury. Co-immunoprecipitation experiments demonstrated that these protective effects of recombinant ANXA2 were regulated by interaction with ANXA2 receptor (A2R), a protein found in cancer cells that can interact with ANXA2 to promote cell migration and proliferation, and the ability of ANXA2-A2R to activate AKT/ERK pathways. Inhibition of AKT/ERK diminished recombinant ANXA2-induced angiogenesis in vitro. Taken together, our study indicates that ANXA2 might be involved in angiogenesis after ischemic stroke. Further investigation of ANXA2-A2R will provide a new therapeutic target for stroke.
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Affiliation(s)
- Haoran Lin
- Department of Pharmacy, the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310009, China.
| | - Wenlu Li
- Department of Pharmacy, the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310009, China.
| | - Zexu Shen
- Department of Pharmacy, the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310009, China.
| | - Yun Bei
- Department of Pharmacy, the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310009, China.
| | - Taofeng Wei
- Department of Pharmacy, the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310009, China.
| | - Zhanyang Yu
- Departments of Radiology and Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02148, United States
| | - Yunjian Dai
- Department of Pharmacy, the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310009, China.
| | - Haibin Dai
- Department of Pharmacy, the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310009, China.
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Liu C, Gu J, Yu Y. Celastrol assuages oxygen-glucose deprivation and reoxygenation-induced damage in human brain microvascular endothelial cells through the circDLGAP4/miR-6085/GDF11 pathway. Metab Brain Dis 2023; 38:255-267. [PMID: 36445630 DOI: 10.1007/s11011-022-01106-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Accepted: 10/13/2022] [Indexed: 12/02/2022]
Abstract
The effect of Celastrol on cerebral ischemia-reperfusion remains unknown. The study aims to explore the role of circular RNA DLGAP4 (circDLGAP4) in cerebral ischemia-reperfusion and the underlying mechanism. Ischemia-reperfusion (I/R) injury of human brain microvascular endothelial cells (HBMECs) was induced by oxygen-glucose deprivation and reoxygenation (OGD/R). Reverse transcription quantitative real-time PCR (RT-qPCR) and western blotting analysis were performed to detect the expression of circDLGAP4, microRNA-6085 (miR-6085), growth differentiation factor 11 (GDF11), B-cell lymphoma-2 (BCL2) and BCL2-associated x protein (BAX). Cell viability, proliferation, and apoptosis were analyzed by cell counting kit-8, 5-Ethynyl-2'-deoxyuridine and flow cytometry analysis. Oxidative stress was analyzed by evaluating the levels of Malondialdehyde (MDA) and Reactive Oxygen Species (ROS) and the activity of Superoxide Dismutase (SOD). The associations among circDLGAP4, miR-6085 and GDF11 were identified by dual-luciferase reporter, RNA immunoprecipitation (RIP) and RNA pull-down assays. Celastrol reduced OGD/R-induced inhibition of circDLGAP4 expression in HBMECs. Celastrol treatment protected HBMECs from OGD/R-induced cell proliferation inhibition and apoptosis and oxidative stress promotion; however, circDLGAP4 depletion attenuated these effects. CircDLGAP4 acted as a sponge for miR-6085, and miR-6085 mimics restored circDLGAP4-mediated effects in OGD/R-stimulated HBMECs. In addition, GDF11 was identified as a targte of miR-6085, and participated in the regulation of miR-6085 to OGD/R-induced HBMEC damage. Further, circDLGAP4 absence inhibited GDF11 expression by interacting with miR-6085 under Celastrol treatment. Celastrol ameliorated OGD/R-induced HBMEC apoptosis and oxidative stress by circDLGAP4/miR-6085/GDF11 pathway, supporting the use of Celastrol as a therapeutic agent for cerebral infarction.
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Affiliation(s)
- Chunhong Liu
- Department of Traditional Chinese Medicine, Yantai Hospital of Traditional Chinese Medicine, No.39 Xing Fu road in Zhifu District, Yantai, 264013, China
| | - Jiahui Gu
- Department of Pharmacy, Yantai Hospital of Traditional Chinese Medicine, Yantai, China
| | - Yingli Yu
- Department of Traditional Chinese Medicine, Yantai Hospital of Traditional Chinese Medicine, No.39 Xing Fu road in Zhifu District, Yantai, 264013, China.
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Riche K, Lenard NR. Quercetin's Effects on Glutamate Cytotoxicity. Molecules 2022; 27:7620. [PMID: 36364448 PMCID: PMC9657878 DOI: 10.3390/molecules27217620] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2022] [Revised: 11/03/2022] [Accepted: 11/04/2022] [Indexed: 08/13/2023] Open
Abstract
The potentially therapeutic effects of the naturally abundant plant flavonoid quercetin have been extensively studied. An extensive body of literature suggests that quercetin's powerful antioxidant effects may relate to its ability to treat disease. Glutamate excitotoxicity occurs when a neuron is overstimulated by the neurotransmitter glutamate and causes dysregulation of intracellular calcium concentrations. Quercetin has been shown to be preventative against many forms of neuronal cell death resulting from glutamate excitotoxicity, such as oncosis, intrinsic apoptosis, mitochondrial permeability transition, ferroptosis, phagoptosis, lysosomal cell death, parthanatos, and death by reactive oxygen species (ROS)/reactive nitrogen species (RNS) generation. The clinical importance for the attenuation of glutamate excitotoxicity arises from the need to deter the continuous formation of tissue infarction caused by various neurological diseases, such as ischemic stroke, seizures, neurodegenerative diseases, and trauma. This review aims to summarize what is known concerning glutamate physiology and glutamate excitotoxic pathophysiology and provide further insight into quercetin's potential to hinder neuronal death caused by cell death pathways activated by glutamate excitotoxicity. Quercetin's bioavailability may limit its use clinically, however. Thus, future research into ways to increase its bioavailability are warranted.
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Affiliation(s)
| | - Natalie R. Lenard
- Department of Biology, School of Arts and Sciences, Franciscan Missionaries of Our Lady University, 5414 Brittany Drive, Baton Rouge, LA 70808, USA
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Lei S, Zhao S, Huang X, Feng Y, Li Z, Chen L, Huang P, Guan H, Zhang H, Wu Q, Chen B. Chaihu Shugan powder alleviates liver inflammation and hepatic steatosis in NAFLD mice: A network pharmacology study and in vivo experimental validation. Front Pharmacol 2022; 13:967623. [PMID: 36172180 PMCID: PMC9512055 DOI: 10.3389/fphar.2022.967623] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Accepted: 08/25/2022] [Indexed: 12/03/2022] Open
Abstract
Background: Nonalcoholic fatty liver disease (NAFLD) is the most common metabolic disease and is intertwined with cardiovascular disorders and diabetes. Chaihu Shugan powder (CSP) is a traditional Chinese medicine with a significant therapeutic effect on metabolic diseases, such as NAFLD. However, its pharmacological mechanisms remain to be elucidated. Methods: The main compounds of CSP were measured using LC-MS/MS. A network pharmacology study was conducted on CSP. Its potential active ingredients were selected according to oral bioavailability, drug similarity indices, and phytochemical analysis. After obtaining the intersected genes between drug targets and disease-related targets, the component-disease-target network and protein-protein interaction analysis were visualized in Cytoscape. GO and KEGG enrichment analyses were performed using the Metascape database. Six-week-old male C57BL/6 mice fed a high-fat high-fructose diet for 16 weeks plus chronic immobilization stress for 2 weeks, an in vivo model, were administered CSP or saline intragastrically. Liver histology, triglyceride and cholesterol levels, ELISA, and RT-PCR were used to assess hepatic inflammation and steatosis. Immunohistochemistry and western blotting were performed to assess protein levels. Results: A total of 130 potential target genes in CSP that act on NAFLD were identified through network pharmacology assays, including tumor necrosis factor (TNF), interleukin-6 (IL6), interleukin-1β (IL-1β), and peroxisome proliferator-activated receptor γ (PPARG). KEGG enrichment analysis showed that the main pathways were involved in inflammatory pathways, such as the TNF and NF-κB signaling pathways, and metabolism-related pathways, such as the MAPK, HIF-1, FoxO, and AMPK signaling pathways. The results in vivo showed that CSP ameliorated liver inflammation and inhibited hepatic fatty acid synthesis in the hepatocyte steatosis model. More specifically, CSP therapy significantly inhibited the expression of tumor necrosis factor α (TNFα), accompanied by a decrease in TNF receptor 1 (TNFR1) and the ligand availability of TNFR1. Conclusion: Through the combination of network pharmacology and in vivo validation, this study elucidated the therapeutic effect of CSP on NAFLD, decreasing liver inflammation and inhibiting hepatic fatty acid synthesis. More specifically, the anti-inflammatory action of CSP was at least partially mediated by inhibiting the TNFα/TNFR1 signaling pathway.
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Affiliation(s)
- Sisi Lei
- Second Clinical Medical College, Guangzhou University of Chinese Medicine, Guangzhou, China
- Guangdong Provincial Key Laboratory of Research on Emergency in Traditional Chinese Medicine, Clinical Research Team of Prevention and Treatment of Cardiac Emergencies with Traditional Chinese Medicine, Guangzhou, China
| | - Shuai Zhao
- Second Clinical Medical College, Guangzhou University of Chinese Medicine, Guangzhou, China
- Guangdong Provincial Key Laboratory of Research on Emergency in Traditional Chinese Medicine, Clinical Research Team of Prevention and Treatment of Cardiac Emergencies with Traditional Chinese Medicine, Guangzhou, China
- The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Xiaoyan Huang
- Guangdong Provincial Key Laboratory of Research on Emergency in Traditional Chinese Medicine, Clinical Research Team of Prevention and Treatment of Cardiac Emergencies with Traditional Chinese Medicine, Guangzhou, China
- The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Yuchao Feng
- Guangdong Provincial Key Laboratory of Research on Emergency in Traditional Chinese Medicine, Clinical Research Team of Prevention and Treatment of Cardiac Emergencies with Traditional Chinese Medicine, Guangzhou, China
- The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Zhishang Li
- Guangdong Provincial Key Laboratory of Research on Emergency in Traditional Chinese Medicine, Clinical Research Team of Prevention and Treatment of Cardiac Emergencies with Traditional Chinese Medicine, Guangzhou, China
- The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Li Chen
- Guangdong Provincial Key Laboratory of Research on Emergency in Traditional Chinese Medicine, Clinical Research Team of Prevention and Treatment of Cardiac Emergencies with Traditional Chinese Medicine, Guangzhou, China
- The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Peiying Huang
- Second Clinical Medical College, Guangzhou University of Chinese Medicine, Guangzhou, China
- Guangdong Provincial Key Laboratory of Research on Emergency in Traditional Chinese Medicine, Clinical Research Team of Prevention and Treatment of Cardiac Emergencies with Traditional Chinese Medicine, Guangzhou, China
| | - Hansu Guan
- The Third Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Haobo Zhang
- Second Clinical Medical College, Guangzhou University of Chinese Medicine, Guangzhou, China
- Guangdong Provincial Key Laboratory of Research on Emergency in Traditional Chinese Medicine, Clinical Research Team of Prevention and Treatment of Cardiac Emergencies with Traditional Chinese Medicine, Guangzhou, China
| | - Qihua Wu
- Second Clinical Medical College, Guangzhou University of Chinese Medicine, Guangzhou, China
- Guangdong Provincial Key Laboratory of Research on Emergency in Traditional Chinese Medicine, Clinical Research Team of Prevention and Treatment of Cardiac Emergencies with Traditional Chinese Medicine, Guangzhou, China
| | - Bojun Chen
- Guangdong Provincial Key Laboratory of Research on Emergency in Traditional Chinese Medicine, Clinical Research Team of Prevention and Treatment of Cardiac Emergencies with Traditional Chinese Medicine, Guangzhou, China
- The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
- *Correspondence: Bojun Chen,
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Zhang L, Ma J, Yang F, Li S, Ma W, Chang X, Yang L. Neuroprotective Effects of Quercetin on Ischemic Stroke: A Literature Review. Front Pharmacol 2022; 13:854249. [PMID: 35662707 PMCID: PMC9158527 DOI: 10.3389/fphar.2022.854249] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Accepted: 04/28/2022] [Indexed: 12/15/2022] Open
Abstract
Ischemic stroke (IS) is characterized by high recurrence and disability; however, its therapies are very limited. As one of the effective methods of treating acute attacks of IS, intravenous thrombolysis has a clear time window. Quercetin, a flavonoid widely found in vegetables and fruits, inhibits immune cells from secreting inflammatory cytokines, thereby reducing platelet aggregation and limiting inflammatory thrombosis. In pre-clinical studies, it has been shown to exhibit neuroprotective effects in patients with ischemic brain injury. However, its specific mechanism of action remains unknown. Therefore, this review aims to use published data to elucidate the potential value of quercetin in patients with ischemic brain injury. This article also reviews the plant sources, pharmacological effects, and metabolic processes of quercetin in vivo, thus focusing on its mechanism in inhibiting immune cell activation and inflammatory thrombosis as well as promoting neuroprotection against ischemic brain injury.
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Affiliation(s)
- Leilei Zhang
- Xi'an Hospital of Traditional Chinese Medicine, Xi'an, China
| | - Jingying Ma
- Shaanxi University of Chinese Medicine, Xianyang, China
| | - Fan Yang
- Guang'anmen Hospital, Chinese Academy of Chinese Medical Sciences, Beijing, China
| | - Sishi Li
- Shaanxi University of Chinese Medicine, Xianyang, China
| | - Wangran Ma
- Shaanxi University of Chinese Medicine, Xianyang, China
| | - Xiang Chang
- Xi'an Hospital of Traditional Chinese Medicine, Xi'an, China
| | - Lin Yang
- Xi'an Hospital of Traditional Chinese Medicine, Xi'an, China
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12
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Chen YP, Wang KX, Cai JQ, Li Y, Yu HL, Wu Q, Meng W, Wang H, Yin CH, Wu J, Huang MB, Li R, Guan DG. Detecting Key Functional Components Group and Speculating the Potential Mechanism of Xiao-Xu-Ming Decoction in Treating Stroke. Front Cell Dev Biol 2022; 10:753425. [PMID: 35646921 PMCID: PMC9136080 DOI: 10.3389/fcell.2022.753425] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Accepted: 02/25/2022] [Indexed: 02/05/2023] Open
Abstract
Stroke is a cerebrovascular event with cerebral blood flow interruption which is caused by occlusion or bursting of cerebral vessels. At present, the main methods in treating stroke are surgical treatment, statins, and recombinant tissue-type plasminogen activator (rt-PA). Relatively, traditional Chinese medicine (TCM) has widely been used at clinical level in China and some countries in Asia. Xiao-Xu-Ming decoction (XXMD) is a classical and widely used prescription in treating stroke in China. However, the material basis of effect and the action principle of XXMD are still not clear. To solve this issue, we designed a new system pharmacology strategy that combined targets of XXMD and the pathogenetic genes of stroke to construct a functional response space (FRS). The effective proteins from this space were determined by using a novel node importance calculation method, and then the key functional components group (KFCG) that could mediate the effective proteins was selected based on the dynamic programming strategy. The results showed that enriched pathways of effective proteins selected from FRS could cover 99.10% of enriched pathways of reference targets, which were defined by overlapping of component targets and pathogenetic genes. Targets of optimized KFCG with 56 components can be enriched into 166 pathways that covered 80.43% of 138 pathways of 1,012 pathogenetic genes. A component potential effect score (PES) calculation model was constructed to calculate the comprehensive effective score of components in the components-targets-pathways (C-T-P) network of KFCGs, and showed that ferulic acid, zingerone, and vanillic acid had the highest PESs. Prediction and docking simulations show that these components can affect stroke synergistically through genes such as MEK, NFκB, and PI3K in PI3K-Akt, cAMP, and MAPK cascade signals. Finally, ferulic acid, zingerone, and vanillic acid were tested to be protective for PC12 cells and HT22 cells in increasing cell viabilities after oxygen and glucose deprivation (OGD). Our proposed strategy could improve the accuracy on decoding KFCGs of XXMD and provide a methodologic reference for the optimization, mechanism analysis, and secondary development of the formula in TCM.
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Affiliation(s)
- Yu-peng Chen
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China,Guangdong Provincial Key Laboratory of Single Cell Technology and Application, Southern Medical University, Guangzhou, China
| | - Ke-xin Wang
- Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, Department of Neurosurgery, National Key Clinical Specialty/Engineering Technology Research Center of Education Ministry of China, Neurosurgery Institute, Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Jie-qi Cai
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China,Guangdong Provincial Key Laboratory of Single Cell Technology and Application, Southern Medical University, Guangzhou, China
| | - Yi Li
- Department of Radiology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Hai-lang Yu
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China,Guangdong Provincial Key Laboratory of Single Cell Technology and Application, Southern Medical University, Guangzhou, China
| | - Qi Wu
- Department of Burns, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Wei Meng
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China,Guangdong Provincial Key Laboratory of Single Cell Technology and Application, Southern Medical University, Guangzhou, China
| | - Handuo Wang
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China,Guangdong Provincial Key Laboratory of Single Cell Technology and Application, Southern Medical University, Guangzhou, China
| | - Chuan-hui Yin
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China,Guangdong Provincial Key Laboratory of Single Cell Technology and Application, Southern Medical University, Guangzhou, China
| | - Jie Wu
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China,Guangdong Provincial Key Laboratory of Single Cell Technology and Application, Southern Medical University, Guangzhou, China
| | - Mian-bo Huang
- Department of Histology and Embryology, Guangdong Provincial Key Laboratory of Construction and Detection in Tissue Engineering, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China,*Correspondence: Mian-bo Huang, ; Rong Li, ; Dao-gang Guan,
| | - Rong Li
- Department of Cardiovascular Disease, First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China,*Correspondence: Mian-bo Huang, ; Rong Li, ; Dao-gang Guan,
| | - Dao-gang Guan
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China,Guangdong Provincial Key Laboratory of Single Cell Technology and Application, Southern Medical University, Guangzhou, China,*Correspondence: Mian-bo Huang, ; Rong Li, ; Dao-gang Guan,
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Pirvu L, Stefaniu A, Neagu G, Pintilie L. Studies on Anemone nemorosa L. extracts; polyphenols profile, antioxidant activity, and effects on Caco-2 cells by in vitro and in silico studies. OPEN CHEM 2022. [DOI: 10.1515/chem-2022-0137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Abstract
In this study, two polar extracts (aqueous and ethanolic) from the aerial part of Anemone nemorosa L. (dried plant) were assessed to reveal their polyphenols profile, antioxidant activity, cytotoxic, and antiproliferative activity on Caco-2 (ATCC-HTB-37) cell line. In silico studies on two key compounds, protoanemonin and anemonin, on four molecular targets – cyclooxygenase-1 and cyclooxygenase-2, and human tankyrase 1 and human tankyrase 2 in relation to human colon cancer cell development have also been achieved. The results are as follows: caffeic acid esters and quercetin glycosides, including (iso)rhamnetin derivates, are the major polyphenol compounds in wood anemone polar extracts; the two polar extracts indicated very strong antioxidant activity in the interval from 0.1 to 5 µg [GAE] per 1 mL sample (IC50 < 0.290 µg GAE/mL), and in vitro studies on Caco-2 cells have revealed their simultaneous stimulatory and protective activity exactly in the concentration area with the strongest antioxidant activity. In silico studies have revealed moderate inhibitory activity of the two key compounds, anemonin and protoanemonin, on the four molecular targets studied; it was concluded having particular benefits of the wood anemone polar extracts in managing postoperative intestinal recovery, and generally in regenerative medicine.
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Affiliation(s)
- Lucia Pirvu
- Department of Pharmaceutical Biotechnologies, National Institute of Chemical Pharmaceutical Research and Development , 112 Vitan Av., Sector 3 , Bucharest , Romania
| | - Amalia Stefaniu
- Department of Pharmaceutical Biotechnologies, National Institute of Chemical Pharmaceutical Research and Development , 112 Vitan Av., Sector 3 , Bucharest , Romania
- Department of Pharmacology, National Institute of Chemical Pharmaceutical Research and Development , 112 Vitan Av., Sector 3 , Bucharest , Romania
| | - Georgeta Neagu
- Department of Pharmacology, National Institute of Chemical Pharmaceutical Research and Development , 112 Vitan Av., Sector 3 , Bucharest , Romania
| | - Lucia Pintilie
- Department of Synthesis, Bioactive Substances and Pharmaceutical Technologies, National Institute of Chemical Pharmaceutical Research and Development , 112 Vitan Av., Sector 3 , Bucharest , Romania
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14
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ApoA-I Nanoparticles as Curcumin Carriers for Cerebral Endothelial Cells: Improved Cytoprotective Effects against Methylglyoxal. Pharmaceuticals (Basel) 2022; 15:ph15030347. [PMID: 35337146 PMCID: PMC8952315 DOI: 10.3390/ph15030347] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Revised: 03/01/2022] [Accepted: 03/09/2022] [Indexed: 11/29/2022] Open
Abstract
Methylglyoxal (MGO) is a highly reactive metabolite of glucose present at elevated levels in diabetic patients. Its cytotoxicity is associated with endothelial dysfunction, which plays a role in cardiovascular and cerebrovascular complications. Although curcumin has many therapeutic benefits, these are limited due to its low bioavailability. We aimed to improve the bioavailability of curcumin and evaluate a potential synergistic effect of curcumin and reconstituted high-density lipoprotein (rHDL) nanoparticles (Cur-rHDLs) on MGO-induced cytotoxicity and oxidative stress in murine cerebrovascular endothelial cells (bEnd.3). Cur-rHDL nanoparticles (14.02 ± 0.95 nm) prepared by ultracentrifugation and containing curcumin were quantified by LC–MS/MS. The synergistic effect of cur-rHDL nanoparticles was tested on bEnd.3 cytotoxicity, reactive oxygen species (ROS) production, chromatin condensation, endoplasmic reticulum (ER) stress, and endothelial barrier integrity by impedancemetry. The uptake of curcumin, alone or associated with HDLs, was also assessed by mass spectrometry. Pretreatment with Cur-rHDLs followed by incubation with MGO showed a protective effect on MGO-induced cytotoxicity and chromatin condensation, as well as a strong protective effect on ROS production, endothelial cell barrier integrity, and ER stress. These results suggest that Cur-rHDLs could be used as a potential therapeutic agent to limit MGO-induced dysfunction in cerebrovascular endothelial cells by enhancing the bioavailability and protective effects of curcumin.
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15
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Wang Y, Zhao Y, Liu X, Li J, Zhang J, Liu D. Chemical constituents and pharmacological activities of medicinal plants from Rosa genus. CHINESE HERBAL MEDICINES 2022; 14:187-209. [PMID: 36117670 PMCID: PMC9476647 DOI: 10.1016/j.chmed.2022.01.005] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Revised: 01/06/2022] [Accepted: 01/17/2022] [Indexed: 02/07/2023] Open
Abstract
The genus Rosa (Rosaceae family) includes about 200 species spread in the world, and this genus shows unique advantages in medicine and food. To date, several scholars concentrated on compounds belonging to flavonoids, triterpenes, tannins, polysaccharide, phenolic acids, fatty acids, organic acids, carotenoids, and vitamins. Pharmacological effects such as antineoplastic and anti-cancer properties, anti-inflammatory, antioxidant, liver protection, regulate blood sugar, antimicrobial activity, antiviral activity, as well as nervous system protection and cardiovascular protection were wildly reported. This article reviews the chemical constituents, pharmacological effects, applications and safety evaluations of Rosa plants, which provides a reference for the comprehensive utilization of medicine and food resources and gives a scientific basis for the development of medicinal plants of the genus Rosa.
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Affiliation(s)
- Yansheng Wang
- Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
- Tianjin Modern Innovation Chinese Medicine Technology Co., Ltd., Tianjin 300380, China
| | - Yanmin Zhao
- Logistics College of Chinese People’s Armed Police Forces, Tianjin 300309, China
| | - Xinnan Liu
- Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
| | - Jingyang Li
- Logistics College of Chinese People’s Armed Police Forces, Tianjin 300309, China
| | - Jingze Zhang
- Tianjin Modern Innovation Chinese Medicine Technology Co., Ltd., Tianjin 300380, China
- Corresponding authors.
| | - Dailin Liu
- Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
- Tianjin Modern Innovation Chinese Medicine Technology Co., Ltd., Tianjin 300380, China
- Corresponding authors.
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16
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Wang G, Wang Y, Yang Q, Xu C, Zheng Y, Wang L, Wu J, Zeng M, Luo M. Metformin prevents methylglyoxal-induced apoptosis by suppressing oxidative stress in vitro and in vivo. Cell Death Dis 2022; 13:29. [PMID: 35013107 PMCID: PMC8748764 DOI: 10.1038/s41419-021-04478-x] [Citation(s) in RCA: 33] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 11/27/2021] [Accepted: 12/14/2021] [Indexed: 02/07/2023]
Abstract
Methylglyoxal (MGO) is an active metabolite of glucose and plays a prominent role in the pathogenesis of diabetic vascular complications, including endothelial cell apoptosis induced by oxidative stress. Metformin (MET), a widely prescribed antidiabetic agent, appears to reduce excessive reactive oxygen species (ROS) generation and limit cell apoptosis. However, the molecular mechanisms underlying this process are still not fully elucidated. We reported here that MET prevents MGO-induced apoptosis by suppressing oxidative stress in vitro and in vivo. Protein expression and protein phosphorylation were investigated using western blotting, ELISA, and immunohistochemical staining, respectively. Cell viability and apoptosis were assessed by the MTT assay, TUNEL staining, and Annexin V-FITC and propidium iodide double staining. ROS generation and mitochondrial membrane potential (MMP) were measured with fluorescent probes. Our results revealed that MET prevented MGO-induced HUVEC apoptosis, inhibited apoptosis-associated biochemical changes such as loss of MMP, the elevation of the Bax/Bcl-2 ratio, and activation of cleaved caspase-3, and attenuated MGO-induced mitochondrial morphological alterations in a dose-dependent manner. MET pretreatment also significantly suppressed MGO-stimulated ROS production, increased signaling through the ROS-mediated PI3K/Akt and Nrf2/HO-1 pathways, and markedly elevated the levels of its downstream antioxidants. Finally, similar results were obtained in vivo, and we demonstrated that MET prevented MGO-induced oxidative damage, apoptosis, and inflammation. As expected, MET reversed MGO-induced downregulation of Nrf2 and p-Akt. In addition, a PI3K inhibitor (LY-294002) and a Nrf2 inhibitor (ML385) observably attenuated the protective effects of MET on MGO-induced apoptosis and ROS generation by inhibiting the Nrf2/HO-1 pathways, while a ROS scavenger (NAC) and a permeability transition pores inhibitor (CsA) completely reversed these effects. Collectively, these findings broaden our understanding of the mechanism by which MET regulates apoptosis induced by MGO under oxidative stress conditions, with important implications regarding the potential application of MET for the treatment of diabetic vascular complications.
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Affiliation(s)
- Gang Wang
- Collaborative Innovation Center for Prevention and Treatment of Cardiovascular Disease of Sichuan Province, Drug Discovery Research Center, Southwest Medical University, Luzhou, China.,Laboratory for Cardiovascular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, China.,School of Pharmacy, Chongqing Medical University, Chongqing, China
| | - Yanan Wang
- Collaborative Innovation Center for Prevention and Treatment of Cardiovascular Disease of Sichuan Province, Drug Discovery Research Center, Southwest Medical University, Luzhou, China.,Laboratory for Cardiovascular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, China
| | - Qinzhi Yang
- Collaborative Innovation Center for Prevention and Treatment of Cardiovascular Disease of Sichuan Province, Drug Discovery Research Center, Southwest Medical University, Luzhou, China.,Laboratory for Cardiovascular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, China
| | - Chunrong Xu
- Collaborative Innovation Center for Prevention and Treatment of Cardiovascular Disease of Sichuan Province, Drug Discovery Research Center, Southwest Medical University, Luzhou, China.,Laboratory for Cardiovascular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, China
| | - Youkun Zheng
- Collaborative Innovation Center for Prevention and Treatment of Cardiovascular Disease of Sichuan Province, Drug Discovery Research Center, Southwest Medical University, Luzhou, China.,Laboratory for Cardiovascular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, China
| | - Liqun Wang
- Collaborative Innovation Center for Prevention and Treatment of Cardiovascular Disease of Sichuan Province, Drug Discovery Research Center, Southwest Medical University, Luzhou, China.,Laboratory for Cardiovascular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, China
| | - Jianbo Wu
- Collaborative Innovation Center for Prevention and Treatment of Cardiovascular Disease of Sichuan Province, Drug Discovery Research Center, Southwest Medical University, Luzhou, China.,Laboratory for Cardiovascular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, China
| | - Min Zeng
- Department of Pharmacy, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, China.
| | - Mao Luo
- Collaborative Innovation Center for Prevention and Treatment of Cardiovascular Disease of Sichuan Province, Drug Discovery Research Center, Southwest Medical University, Luzhou, China. .,Laboratory for Cardiovascular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, China. .,Department of Pharmacy, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, China.
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17
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Li R, Zhou Y, Zhang S, Li J, Zheng Y, Fan X. The natural (poly)phenols as modulators of microglia polarization via TLR4/NF-κB pathway exert anti-inflammatory activity in ischemic stroke. Eur J Pharmacol 2022; 914:174660. [PMID: 34863710 DOI: 10.1016/j.ejphar.2021.174660] [Citation(s) in RCA: 48] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2021] [Revised: 11/04/2021] [Accepted: 11/29/2021] [Indexed: 12/24/2022]
Abstract
Increasing evidences suggest that inflammation plays a key role in the pathogenesis of stroke, a devastating disease second only to cardiac ischemia as a cause of death worldwide. Microglia are the first non-neuronal cells on the scene during the innate immune response to acute ischemic stroke. Microglia respond to acute brain injury by activating and developing classic M1-like (pro-inflammatory) or alternative M2-like (anti-inflammatory) phenotypes. M1 microglia produce pro-inflammatory cytokines to exacerbate neural death, astrocyte apoptosis, and blood brain barrier (BBB) disruption, while M2 microglia play the opposite role. NF-κB, a central regulator of the inflammatory response, was responsible for microglia M1 and M2 polarization. NF-κB p65 and p50 form a heterodimer to initiate a pro-inflammatory cytokine response, which enhances M1 activation and impair M2 response of microglia. TLR4, expressed on the surface of microglia, plays an important role in activating NF-κB, ultimately causing the M1 response of microglia. Therefore, modulation of microglial phenotypes via TLR4/NF-κB signaling pathway may be a promising therapeutic approach for ischemic stroke. Dietary (poly)phenols are present in various foods, which have shown promising protective effects on ischemic stroke. In vivo studies strongly suggest that many (poly)phenols have a pronounced impact on ischemic stroke, as demonstrated by lower neuroinflammation. Thus, this review focuses on the anti-inflammatory properties of dietary (poly)phenols and discusses their effects on the polarization of microglia through modulating TLR4/NF-κB signaling pathway in the ischemic stroke.
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Affiliation(s)
- Ruoqi Li
- School of Basic Medical Sciences, Zhejiang Chinese Medical University, Hangzhou, 310053, China
| | - Yuan Zhou
- School of Basic Medical Sciences, Zhejiang Chinese Medical University, Hangzhou, 310053, China
| | - Shanshan Zhang
- School of Basic Medical Sciences, Zhejiang Chinese Medical University, Hangzhou, 310053, China
| | - Jieying Li
- School of Basic Medical Sciences, Zhejiang Chinese Medical University, Hangzhou, 310053, China
| | - Yingyi Zheng
- School of Basic Medical Sciences, Zhejiang Chinese Medical University, Hangzhou, 310053, China
| | - Xiang Fan
- School of Basic Medical Sciences, Zhejiang Chinese Medical University, Hangzhou, 310053, China; Key Laboratory of Neuropharmacology and Translational Medicine of Zhejiang Province, Zhejiang Chinese Medical University, Hangzhou, 310053, China.
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18
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Multi-Mechanistic In Vitro Evaluation of Antihyperglycemic, Antioxidant and Antiglycation Activities of Three Phenolic-Rich Indian Red Rice Genotypes and In Silico Evaluation of Their Phenolic Metabolites. Foods 2021; 10:foods10112818. [PMID: 34829098 PMCID: PMC8617766 DOI: 10.3390/foods10112818] [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: 09/23/2021] [Revised: 10/21/2021] [Accepted: 10/21/2021] [Indexed: 11/26/2022] Open
Abstract
The study evaluated the antidiabetic potential of three traditional Indian red rice genotypes/RR (Kattuyanam/KA, Chennangi/CH & Karungkuruvai/KU) using a combination of in vitro, metabolomics (Quadrupole-Time of Flight-Liquid chromatography-Mass spectrometry/Q-TOF-LC-MS/MS), and in silico techniques. In terms of antihyperglycemic potential, KA exhibited the highest inhibitory activity against α-amylase; CH against α-glucosidase; and KU against DPPIV and PTP1B enzymes. KA exhibited the highest antioxidant activity (DPPH, FRAP, and ABTS) and greater inhibition of protein glycation compared to other RR indicating its potential to mitigate diabetic complications. The metabolomic analysis confirmed the presence of 99 phenolics in the sample extracts (KU-71, KA-70, CH-68). Molecular docking studies revealed seven metabolites to be good inhibitors of the four target enzymes and activators of insulin receptor substrate/IRS. The antihyperglycemic and oxidation-glycation reduction composite index revealed KA to have the highest overall antidiabetic potential. Hence, the RR could be utilized in functional foods with a multi-barrelled strategy for diabetes prevention/management.
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Abstract
Rice bran is a by-product of the rice milling process, which refers to the processing of brown rice into polished rice. It contains a considerable amount of functional bioactive compounds. However, the utilization of these compounds is limited and calls for an effort to ferment rice bran. One of the methods that can significantly increase the added value of rice bran as well as its bioactivity is the solid-state fermentation. It can also be one of the strategies that help in the production of rice bran as a functional ingredient with higher bioactivity for health promotion.
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Affiliation(s)
- Ardiansyah
- Department of Food Technology, Universitas Bakrie
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20
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Chen C, Huang Y, Xia P, Zhang F, Li L, Wang E, Guo Q, Ye Z. Long noncoding RNA Meg3 mediates ferroptosis induced by oxygen and glucose deprivation combined with hyperglycemia in rat brain microvascular endothelial cells, through modulating the p53/GPX4 axis. Eur J Histochem 2021; 65:3224. [PMID: 34587716 PMCID: PMC8490947 DOI: 10.4081/ejh.2021.3224] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Accepted: 08/12/2021] [Indexed: 12/12/2022] Open
Abstract
Individuals with diabetes are exposed to a higher risk of perioperative stroke than non-diabetics mainly due to persistent hyperglycemia. LncRNA Meg3 has been considered as an important mediator in regulating ischemic stroke. However, the functional and regulatory roles of Meg3 in diabetic brain ischemic injury remain unclear. In this study, rat brain microvascular endothelial cells (RBMVECs) were exposed to 6 h of oxygen and glucose deprivation (OGD), and subsequent reperfusion via incubating cells with glucose of various high concentrations for 24 h to imitate in vitro diabetic brain ischemic injury. It was shown that the marker events of ferroptosis and increased Meg3 expression occurred after the injury induced by OGD combined with hyperglycemia. However, all ferroptotic events were reversed with the treatment of Meg3-siRNA. Moreover, in this in vitro model, p53 was also characterized as a downstream target of Meg3. Furthermore, p53 knockdown protected RBMVECs against OGD + hyperglycemic reperfusion-induced ferroptosis, while the overexpression of p53 exerted opposite effects, implying that p53 served as a positive regulator of ferroptosis. Additionally, the overexpression or knockdown of p53 significantly modulated GPX4 expression in RBMVECs exposed to the injury induced by OGD combined with hyperglycemic treatment. Furthermore, GPX4 expression was suppressed again after the reintroduction of p53 into cells silenced by Meg3. Finally, chromatin immunoprecipitation assay uncovered that p53 was bound to GPX4 promoter. Altogether, these data revealed that, by modulating GPX4 transcription and expression, the Meg3-p53 signaling pathway mediated the ferroptosis of RBMVECs upon injury induced by OGD combined with hyperglycemic reperfusion.
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Affiliation(s)
- Cheng Chen
- Department of Anesthesiology, Xiangya Hospital of Central South University, Changsha, Hunan Province.
| | - Yan Huang
- Department of Anesthesiology, Xiangya Hospital of Central South University, Changsha, Hunan Province.
| | - Pingping Xia
- Department of Anesthesiology, Xiangya Hospital of Central South University, Changsha; National Clinical Research Center for Geriatric Disorders, Central South University, Changsha, Hunan Province.
| | - Fan Zhang
- Department of Anesthesiology, Xiangya Hospital of Central South University, Changsha; National Clinical Research Center for Geriatric Disorders, Central South University, Changsha, Hunan Province.
| | - Longyan Li
- Department of Anesthesiology, Xiangya Hospital of Central South University, Changsha; National Clinical Research Center for Geriatric Disorders, Central South University, Changsha, Hunan Province.
| | - E Wang
- Department of Anesthesiology, Xiangya Hospital of Central South University, Changsha; National Clinical Research Center for Geriatric Disorders, Central South University, Changsha, Hunan Province.
| | - Qulian Guo
- Department of Anesthesiology, Xiangya Hospital of Central South University, Changsha; National Clinical Research Center for Geriatric Disorders, Central South University, Changsha, Hunan Province.
| | - Zhi Ye
- Department of Anesthesiology, Xiangya Hospital of Central South University, Changsha; National Clinical Research Center for Geriatric Disorders, Central South University, Changsha, Hunan Province.
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21
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Kong LY, Liang MY, Liu JP, Lai P, Ye JS, Zhang ZX, Du ZM, Yu JJ, Gu L, Xie FC, Tang ZX, Liu ZY. Mesenchymal Stem Cell-derived Exosomes Rescue Oxygen-Glucose Deprivation-induced Injury in Endothelial Cells. Curr Neurovasc Res 2021; 17:155-163. [PMID: 32056526 DOI: 10.2174/1567202617666200214103950] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Revised: 01/08/2020] [Accepted: 01/16/2020] [Indexed: 12/13/2022]
Abstract
OBJECTIVE The effects of mesenchymal stem cell (MSC)-derived exosomes on brain microvascular endothelial cells under oxygen-glucose deprivation (OGD), which mimic cells in deep hypothermic circulatory arrest (DHCA) in vitro, are yet to be studied. METHODS MSCs were co-cultured with primary rat brain endothelial cells, which were then exposed to OGD. Cell viability, apoptosis, the inflammatory factors (IL-1β, IL-6, and TNF-α), and the activation of inflammation-associated TLR4-mediated pyroptosis and the NF-κB signaling pathway were determined. Furthermore, exosomes derived from MSCs were isolated and incubated with endothelial cells to investigate whether the effect of MSCs is associated with MSCderived exosomes. Apoptosis, cell viability, and the inflammatory response were also analyzed in OGD-induced endothelial cells incubated with MSC-derived exosomes. RESULTS OGD treatment promoted endothelial cell apoptosis, induced the release of inflammatory factors IL-1β, IL-6, and TNF-α, and inhibited cell viability. Western blot analysis showed that OGD treatment-induced TLR4, and NF-κB p65 subunit phosphorylation and caspase-1 upregulation, while co-culture with MSCs could reduce the effect of OGD treatment on endothelial cells. As expected, the effect of MSC-derived exosomes on OGD-treated endothelial cells was similar to that of MSCs. MSC-derived exosomes alleviated the OGD-induced decrease in the viability of endothelial cells, and increased levels of apoptosis, inflammatory factors, and the activation of inflammatory and inflammatory focal pathways. CONCLUSION Both MSCs and MSC-derived exosomes attenuated OGD-induced rat primary brain endothelial cell injury. These findings suggest that MSC-derived exosomes mediate at least some of the protective effects of MSCs on endothelial cells.
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Affiliation(s)
- Li-Yun Kong
- Department of Operation Room, Heart Center, The First Affiliated Hospital of Gannan Medical University, Ganzhou 341000, China
| | - Meng-Ya Liang
- Department of Cardiac Surgery, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou 510080, China
| | - Jian-Ping Liu
- Department of Vascular Department, The First Affiliated Hospital of Gannan Medical University, Ganzhou 341000, China
| | - Ping Lai
- Department of Cardiology, Heart Center, The First Affiliated Hospital of Gannan Medical University, Ganzhou 341000, China
| | - Jun-Song Ye
- Department of Clinical Research Center, The First Affiliated Hospital of Gannan Medical University, Ganzhou 341000, China
| | - Zu-Xiong Zhang
- Department of Cardiothoracic Surgery, The First Affiliated Hospital of Gannan Medical University, Ganzhou 341000, China
| | - Zhi-Ming Du
- Department of Cardiothoracic Surgery, The First Affiliated Hospital of Gannan Medical University, Ganzhou 341000, China
| | - Jun-Jian Yu
- Department of Cardiothoracic Surgery, The First Affiliated Hospital of Gannan Medical University, Ganzhou 341000, China
| | - Liang Gu
- Department of Cardiothoracic Surgery, The First Affiliated Hospital of Gannan Medical University, Ganzhou 341000, China
| | - Fa-Chun Xie
- Department of Cardiothoracic Surgery, The First Affiliated Hospital of Gannan Medical University, Ganzhou 341000, China
| | - Zhi-Xian Tang
- Department of Cardiothoracic Surgery, The First Affiliated Hospital of Gannan Medical University, Ganzhou 341000, China
| | - Zi-You Liu
- Department of Cardiothoracic Surgery, The First Affiliated Hospital of Gannan Medical University, Ganzhou 341000, China
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22
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Role of Polyphenols as Antioxidant Supplementation in Ischemic Stroke. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:5471347. [PMID: 34257802 PMCID: PMC8253632 DOI: 10.1155/2021/5471347] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Accepted: 06/03/2021] [Indexed: 12/17/2022]
Abstract
Stroke is the second most common cause of death globally and the leading cause of death in China. The pathogenesis of cerebral ischemia injury is complex, and oxidative stress plays an important role in the fundamental pathologic progression of cerebral damage in ischemic stroke. Previous studies have preliminarily confirmed that oxidative stress should be a potential therapeutic target and antioxidant as a treatment strategy for ischemic stroke. Emerging experimental studies have demonstrated that polyphenols exert the antioxidant potential to play the neuroprotection role after ischemic stroke. This comprehensive review summarizes antioxidant effects of some polyphenols, which have the most inhibition effects on reactive oxygen species generation and oxidative stress after ischemic stroke.
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23
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Antiplatelet Activity of Isorhamnetin via Mitochondrial Regulation. Antioxidants (Basel) 2021; 10:antiox10050666. [PMID: 33922903 PMCID: PMC8146847 DOI: 10.3390/antiox10050666] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Revised: 04/09/2021] [Accepted: 04/14/2021] [Indexed: 01/02/2023] Open
Abstract
With the diet, we ingest nutrients capable of modulating platelet function, which plays a crucial role in developing cardiovascular events, one of the leading causes of mortality worldwide. Studies that demonstrate the antiplatelet and antithrombotic potential of bioactive compounds are vital to maintaining good cardiovascular health. In this work, we evaluate the flavonol isorhamnetin’s antiplatelet effect on human platelets, using collagen, thrombin receptor activator peptide 6 (TRAP-6), and phorbol myristate acetate (PMA) as agonists. Isorhamnetin induced a significant inhibition on collagen- and TRAP-6-induced platelet aggregation, with half-maximum inhibitory concentration (IC50) values of 8.1 ± 2.6 and 16.1 ± 11.1 µM, respectively; while it did not show cytotoxic effect. Isorhamnetin reduced adenosine triphosphate levels (ATP) in platelets stimulated by collagen and TRAP-6. We also evidenced that isorhamnetin’s antiplatelet activity was related to the inhibition of mitochondrial function without effect on reactive oxygen species (ROS) levels. Additionally, we investigated isorhamnetin’s effect on thrombus formation in vitro under flow conditions on the damaged vessel wall. In this context, we demonstrate that isorhamnetin at 20 µM induced a significant inhibition on platelet deposition, confirming its antithrombotic effect. Our findings corroborate the antiplatelet and antithrombotic potential of isorhamnetin present in many foods of daily consumption.
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Taïlé J, Patché J, Veeren B, Gonthier MP. Hyperglycemic Condition Causes Pro-Inflammatory and Permeability Alterations Associated with Monocyte Recruitment and Deregulated NFκB/PPARγ Pathways on Cerebral Endothelial Cells: Evidence for Polyphenols Uptake and Protective Effect. Int J Mol Sci 2021; 22:ijms22031385. [PMID: 33573189 PMCID: PMC7866545 DOI: 10.3390/ijms22031385] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2020] [Revised: 01/26/2021] [Accepted: 01/27/2021] [Indexed: 12/12/2022] Open
Abstract
Hyperglycemia alters the function of cerebral endothelial cells from the blood-brain barrier, increasing the risk of cerebrovascular complications during diabetes. This study evaluated the protective effect of polyphenols on inflammatory and permeability markers on bEnd3 cerebral endothelial cells exposed to high glucose concentration. Results show that hyperglycemic condition increased nuclear factor kappa B (NFκB) activity, deregulated the expression of interleukin-1 beta (IL-1β), interleukin-6 (IL-6), tumor necrosis factor-alpha (TNF-α), cyclooxygenase-2 (COX-2), inducible nitric oxide synthase (iNOS), interleukin-10 (IL-10) and endothelial-leukocyte adhesion molecule (E-selectin) genes, raised MCP-1 secretion and elevated monocyte adhesion and transendothelial migration. High glucose decreased occludin, claudin-5, zona occludens-1 (ZO-1) and zona occludens-2 (ZO-2) tight junctions production and altered the endothelial permeability. Characterized polyphenolic extracts from the French medicinal plants Antirhea borbonica, Ayapana triplinervis, Dodonaea viscosa and Terminalia bentzoe, and their major polyphenols quercetin, caffeic, chlorogenic and gallic acids limited the pro-inflammatory and permeability alterations caused by high glucose. Peroxisome proliferator-activated receptor gamma (PPARγ) agonist also attenuated these damages while PPARγ antagonist aggravated them, suggesting PPARγ protective action. Interestingly, polyphenols improved PPARγ gene expression lowered by high glucose. Moreover, polyphenols were detected at the intracellular level or membrane-bound to cells, with evidence for breast cancer resistance protein (BCRP) efflux transporter role. Altogether, these findings emphasize the ability of polyphenols to protect cerebral endothelial cells in hyperglycemic condition and their relevance for pharmacological strategies aiming to limit cerebrovascular disorders in diabetes.
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25
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Mouffouk C, Mouffouk S, Mouffouk S, Hambaba L, Haba H. Flavonols as potential antiviral drugs targeting SARS-CoV-2 proteases (3CL pro and PL pro), spike protein, RNA-dependent RNA polymerase (RdRp) and angiotensin-converting enzyme II receptor (ACE2). Eur J Pharmacol 2021; 891:173759. [PMID: 33249077 PMCID: PMC7691142 DOI: 10.1016/j.ejphar.2020.173759] [Citation(s) in RCA: 65] [Impact Index Per Article: 21.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Revised: 11/01/2020] [Accepted: 11/23/2020] [Indexed: 12/12/2022]
Abstract
The novel coronavirus outbreak (COVID-19) caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) represents the actual greatest global public health crisis. The lack of efficacious drugs and vaccines against this viral infection created a challenge for scientific researchers in order to find effective solutions. One of the promising therapeutic approaches is the search for bioactive molecules with few side effects that display antiviral properties in natural sources like medicinal plants and vegetables. Several computational and experimental studies indicated that flavonoids especially flavonols and their derivatives constitute effective viral enzyme inhibitors and possess interesting antiviral activities. In this context, the present study reviews the efficacy of many dietary flavonols as potential antiviral drugs targeting the SARS-CoV-2 enzymes and proteins including Chymotrypsin-Like Protease (3CLpro), Papain Like protease (PLpro), Spike protein (S protein) and RNA-dependent RNA polymerase (RdRp), and also their ability to interact with the angiotensin-converting enzyme II (ACE2) receptor. The relationship between flavonol structures and their SARS-CoV-2 antiviral effects were discussed. On the other hand, the immunomodulatory, the anti-inflammatory and the antiviral effects of secondary metabolites from this class of flavonoids were reported. Also, their bioavailability limitations and toxicity were predicted.
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Affiliation(s)
- Chaima Mouffouk
- Faculty of Nature and Life Sciences, Department of Organisms, University of Batna 2, Algeria.
| | - Soumia Mouffouk
- Laboratory of Chemistry and Environmental Chemistry (L.C.C.E), Department of Chemistry, Faculty of Sciences of the Matter, University of Batna 1, 05000, Batna, Algeria
| | - Sara Mouffouk
- Faculty of Nature and Life Sciences, Department of Organisms, University of Batna 2, Algeria
| | - Leila Hambaba
- Faculty of Nature and Life Sciences, Department of Organisms, University of Batna 2, Algeria
| | - Hamada Haba
- Laboratory of Chemistry and Environmental Chemistry (L.C.C.E), Department of Chemistry, Faculty of Sciences of the Matter, University of Batna 1, 05000, Batna, Algeria
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26
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Gong G, Guan YY, Zhang ZL, Rahman K, Wang SJ, Zhou S, Luan X, Zhang H. Isorhamnetin: A review of pharmacological effects. Biomed Pharmacother 2020; 128:110301. [PMID: 32502837 DOI: 10.1016/j.biopha.2020.110301] [Citation(s) in RCA: 207] [Impact Index Per Article: 51.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Revised: 05/11/2020] [Accepted: 05/20/2020] [Indexed: 12/14/2022] Open
Abstract
Isorhamnetin is one of the most important active ingredients in the fruits of Hippophae rhamnoides L. and the leaves of Ginkgo biloba L., which possesses extensive pharmacological activities. At present, there have been numerous investigations on isorhamnetin, which has the effects of cardiovascular and cerebrovascular protection, anti-tumor, anti-inflammatory, anti-oxidation, organ protection, prevention of obesity, etc. The related mechanisms involve the regulation of PI3K/AKT/PKB, NF-κB, MAPK and other signaling pathways as well as the expression of related cytokines and kinases. Isorhamnetin has a high value of development and application. However, the investigations on its mechanism of action are limited and lack of detailed scientific validation. The manuscript reviewed the pharmacological effects of isorhamnetin and related mechanisms of action for the development of its medicinal properties further.
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Affiliation(s)
- Gang Gong
- Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai, PR China; School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, PR China
| | - Ying-Yun Guan
- Department of Pharmacy, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, PR China
| | - Zhong-Lin Zhang
- Department of Pharmacology, School of Pharmacy, Chengdu Medical College, Chengdu, PR China
| | - Khalid Rahman
- School of Pharmacy and Biomolecular Sciences, Faculty of Science, Liverpool John Moores University, Liverpool, L3 3AF, England, UK
| | - Su-Juan Wang
- Department of Drug Preparation, Hospital of TCM and Hui Nationality Medicine, Ningxia Medical University, Wuzhong, PR China
| | - Shuang Zhou
- Acupuncture and Moxibustion Techniques Department, School of Acupuncture-Moxibustion and Tuina, Shanghai University of Traditional Chinese Medicine, No. 1200, Cailun Road, Shanghai, 200032, PR China.
| | - Xin Luan
- Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai, PR China.
| | - Hong Zhang
- Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai, PR China; School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, PR China.
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27
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Chen S, Chen H, Du Q, Shen J. Targeting Myeloperoxidase (MPO) Mediated Oxidative Stress and Inflammation for Reducing Brain Ischemia Injury: Potential Application of Natural Compounds. Front Physiol 2020; 11:433. [PMID: 32508671 PMCID: PMC7248223 DOI: 10.3389/fphys.2020.00433] [Citation(s) in RCA: 127] [Impact Index Per Article: 31.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Accepted: 04/08/2020] [Indexed: 12/20/2022] Open
Abstract
Oxidative stress and inflammation are two critical pathological processes of cerebral ischemia-reperfusion injury. Myeloperoxidase (MPO) is a critical inflammatory enzyme and therapeutic target triggering both oxidative stress and neuroinflammation in the pathological process of cerebral ischemia-reperfusion injury. MPO is presented in infiltrated neutrophils, activated microglial cells, neurons, and astrocytes in the ischemic brain. Activation of MPO can catalyze the reaction of chloride and H2O2 to produce HOCl. MPO also mediates oxidative stress by promoting the production of reactive oxygen species (ROS) and reactive nitrogen species (RNS), modulating the polarization and inflammation-related signaling pathways in microglia and neutrophils. MPO can be a therapeutic target for attenuating oxidative damage and neuroinflammation in ischemic stroke. Targeting MPO with inhibitors or gene deficiency significantly reduced brain infarction and improved neurological outcomes. This article discusses the important roles of MPO in mediating oxidative stress and neuroinflammation during cerebral ischemia-reperfusion injury and reviews the current understanding of the underlying mechanisms. Furthermore, we summarize the active compounds from medicinal herbs with potential as MPO inhibitors for anti-oxidative stress and anti-inflammation to attenuate cerebral ischemia-reperfusion injury, and as adjunct therapeutic agents for extending the window of thrombolytic treatment. We highlight that targeting MPO could be a promising strategy for alleviating ischemic brain injury, which merits further translational study.
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Affiliation(s)
- Shuang Chen
- School of Chinese Medicine, The University of Hong Kong, Pok Fu Lam, Hong Kong
| | - Hansen Chen
- School of Chinese Medicine, The University of Hong Kong, Pok Fu Lam, Hong Kong
- Shenzhen Institute of Research and Innovation, The University of Hong Kong, Shenzhen, China
| | - Qiaohui Du
- School of Chinese Medicine, The University of Hong Kong, Pok Fu Lam, Hong Kong
| | - Jiangang Shen
- School of Chinese Medicine, The University of Hong Kong, Pok Fu Lam, Hong Kong
- Shenzhen Institute of Research and Innovation, The University of Hong Kong, Shenzhen, China
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28
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Li Y, Sun J, Wu R, Bai J, Hou Y, Zeng Y, Zhang Y, Wang X, Wang Z, Meng X. Mitochondrial MPTP: A Novel Target of Ethnomedicine for Stroke Treatment by Apoptosis Inhibition. Front Pharmacol 2020; 11:352. [PMID: 32269527 PMCID: PMC7109312 DOI: 10.3389/fphar.2020.00352] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Accepted: 03/09/2020] [Indexed: 12/31/2022] Open
Abstract
Mammalian mitochondrial permeability transition pore (MPTP), across the inner and outer membranes of mitochondria, is a nonspecific channel for signal transduction or material transfer between mitochondrial matrix and cytoplasm such as maintenance of Ca2+ homeostasis, regulation of oxidative stress signals, and protein translocation evoked by some of stimuli. Continuous MPTP opening has been proved to stimulate neuronal apoptosis in ischemic stroke. Meanwhile, inhibition of MPTP overopening-induced apoptosis has shown excellent efficacy in the treatment of ischemic stroke. Among of which, the potential molecular mechanisms of drug therapy for stroke has also been gradually revealed by researchers. The characteristics of multi-components or multi-targets for ethnic drugs also provide the possibility to treat stroke from the perspective of mitochondrial MPTP. The advantages mentioned above make it necessary for us to explore and clarify the new perspective of ethnic medicine in treating stroke and to determine the specific molecular mechanisms through advanced technologies as much as possible. In this review, we attempt to uncover the relationship between abnormal MPTP opening and neuronal apoptosis in ischemic stroke. We further summarized currently authorized drugs, ethnic medicine prescriptions, herbs, and identified monomer compounds for inhibition of MPTP overopening-induced ischemic neuron apoptosis. Finally, we strive to provide a new perspective and enlightenment for ethnic medicine in the prevention and treatment of stroke by inhibition of MPTP overopening-induced neuronal apoptosis.
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Affiliation(s)
- Yangxin Li
- Ethnic Medicine Academic Heritage Innovation Research Center, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Jiayi Sun
- Innovative Institute of Chinese Medicine and Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Ruixia Wu
- School of Ethnic Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Jinrong Bai
- Ethnic Medicine Academic Heritage Innovation Research Center, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Ya Hou
- Ethnic Medicine Academic Heritage Innovation Research Center, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Yong Zeng
- Ethnic Medicine Academic Heritage Innovation Research Center, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Yi Zhang
- Ethnic Medicine Academic Heritage Innovation Research Center, Chengdu University of Traditional Chinese Medicine, Chengdu, China.,School of Ethnic Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Xiaobo Wang
- Ethnic Medicine Academic Heritage Innovation Research Center, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Zhang Wang
- School of Ethnic Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Xianli Meng
- Ethnic Medicine Academic Heritage Innovation Research Center, Chengdu University of Traditional Chinese Medicine, Chengdu, China.,Innovative Institute of Chinese Medicine and Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
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29
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Antioxidative properties of eastern prickly pear (Opuntia humifusa) fermented with lactic acid bacteria and cell wall-hydrolyzing enzymes. Lebensm Wiss Technol 2020. [DOI: 10.1016/j.lwt.2020.109029] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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30
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Dicarbonyl Stress and S-Glutathionylation in Cerebrovascular Diseases: A Focus on Cerebral Cavernous Malformations. Antioxidants (Basel) 2020; 9:antiox9020124. [PMID: 32024152 PMCID: PMC7071005 DOI: 10.3390/antiox9020124] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Revised: 01/25/2020] [Accepted: 01/29/2020] [Indexed: 02/07/2023] Open
Abstract
Dicarbonyl stress is a dysfunctional state consisting in the abnormal accumulation of reactive α-oxaldehydes leading to increased protein modification. In cells, post-translational changes can also occur through S-glutathionylation, a highly conserved oxidative post-translational modification consisting of the formation of a mixed disulfide between glutathione and a protein cysteine residue. This review recapitulates the main findings supporting a role for dicarbonyl stress and S-glutathionylation in the pathogenesis of cerebrovascular diseases, with specific emphasis on cerebral cavernous malformations (CCM), a vascular disease of proven genetic origin that may give rise to various clinical signs and symptoms at any age, including recurrent headaches, seizures, focal neurological deficits, and intracerebral hemorrhage. A possible interplay between dicarbonyl stress and S-glutathionylation in CCM is also discussed.
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31
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Jia F, Mou L, Ge H. Protective effects of ginsenoside Rb1 on H 2O 2-induced oxidative injury in human endothelial cell line (EA.hy926) via miR-210. Int J Immunopathol Pharmacol 2020; 33:2058738419866021. [PMID: 31359794 PMCID: PMC6668182 DOI: 10.1177/2058738419866021] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Ginsenoside Rb1 (Rb1) possesses a cardioprotective effect via mediating microRNAs (miRs), while it is unexplored whether miR-210 is regulated by Rb1 in response to oxidative stress. Human endothelial EA.hy926 cells were stimulated with H2O2 before Rb1 treatment. After transfection, cell viability, apoptosis, migration, and invasion assays were conducted. Western blot was applied to quantify protein. BCL2/adenovirus E1B 19-kDa interacting protein 3 (BNIP3) and miR-210 were analyzed with quantitative reverse transcription polymerase chain reaction. Dual luciferase activity assay was performed. Rb1 elevated viability, migration, and invasion of H2O2-treated cells. H2O2-induced apoptosis was moderated by Rb1. miR-210 was augmented in H2O2-treated cells after Rb1 stimulation. miR-210 inhibitor abolished the positive effects of Rb1. BNIP3 was negatively modulated by miR-210 and implicated in modulating viability, apoptosis, and migration and invasion. In addition, BNIP3 modulated phosphorylation of regulators. Rb1 repressed oxidative injury via elevating miR-210. miR-210 negatively mediated BNIP3, which participated in oxidative damage via regulating mammalian targets of rapamycin (mTOR) and nuclear factor-κB (NF-κB).
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Affiliation(s)
- Fubao Jia
- 1 Department of Neurology, Shanxian Central Hospital, Heze, China
| | - Lei Mou
- 2 Department of Neurology, Rizhao Hospital of Traditional Chinese Medicine, Rizhao, China
| | - Hanming Ge
- 3 Department of Neurology, The Affiliated Hospital of Northwest University, Xi'an No.3 Hospital, Xi'an, China
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32
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Zille M, Ikhsan M, Jiang Y, Lampe J, Wenzel J, Schwaninger M. The impact of endothelial cell death in the brain and its role after stroke: A systematic review. Cell Stress 2019; 3:330-347. [PMID: 31799500 PMCID: PMC6859425 DOI: 10.15698/cst2019.11.203] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
The supply of oxygen and nutrients to the brain is vital for its function and requires a complex vascular network that, when disturbed, results in profound neurological dysfunction. As part of the pathology in stroke, endothelial cells die. As endothelial cell death affects the surrounding cellular environment and is a potential target for the treatment and prevention of neurological disorders, we have systematically reviewed important aspects of endothelial cell death with a particular focus on stroke. After screening 2876 publications published between January 1, 2010 and August 7, 2019, we identified 154 records to be included. We found that endothelial cell death occurs rapidly as well as later after the onset of stroke conditions. Among the different cell death mechanisms, apoptosis was the most widely investigated (92 records), followed by autophagy (20 records), while other, more recently defined mechanisms received less attention, such as lysosome-dependent cell death (2 records) and necroptosis (2 records). We also discuss the differential vulnerability of brain cells to injury after stroke and the role of endothelial cell death in the no-reflow phenomenon with a special focus on the microvasculature. Further investigation of the different cell death mechanisms using novel tools and biomarkers will greatly enhance our understanding of endothelial cell death. For this task, at least two markers/criteria are desirable to determine cell death subroutines according to the recommendations of the Nomenclature Committee on Cell Death.
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Affiliation(s)
- Marietta Zille
- Institute for Experimental and Clinical Pharmacology and Toxicology, University of Lübeck, Lübeck, Germany
| | - Maulana Ikhsan
- Institute for Experimental and Clinical Pharmacology and Toxicology, University of Lübeck, Lübeck, Germany
| | - Yun Jiang
- Institute for Experimental and Clinical Pharmacology and Toxicology, University of Lübeck, Lübeck, Germany.,DZHK (German Research Centre for Cardiovascular Research), partner site Hamburg/Lübeck/Kiel, Lübeck, Germany
| | - Josephine Lampe
- Institute for Experimental and Clinical Pharmacology and Toxicology, University of Lübeck, Lübeck, Germany.,DZHK (German Research Centre for Cardiovascular Research), partner site Hamburg/Lübeck/Kiel, Lübeck, Germany
| | - Jan Wenzel
- Institute for Experimental and Clinical Pharmacology and Toxicology, University of Lübeck, Lübeck, Germany.,DZHK (German Research Centre for Cardiovascular Research), partner site Hamburg/Lübeck/Kiel, Lübeck, Germany
| | - Markus Schwaninger
- Institute for Experimental and Clinical Pharmacology and Toxicology, University of Lübeck, Lübeck, Germany.,DZHK (German Research Centre for Cardiovascular Research), partner site Hamburg/Lübeck/Kiel, Lübeck, Germany
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Ahmad S, Kindelin A, Khan SA, Ahmed M, Hoda MN, Bhatia K, Ducruet AF. C3a Receptor Inhibition Protects Brain Endothelial Cells Against Oxygen-glucose Deprivation/Reperfusion. Exp Neurobiol 2019; 28:216-228. [PMID: 31138990 PMCID: PMC6526115 DOI: 10.5607/en.2019.28.2.216] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Revised: 04/09/2019] [Accepted: 04/10/2019] [Indexed: 02/07/2023] Open
Abstract
The complement cascade is a central component of innate immunity which plays a critical role in brain inflammation. Complement C3a receptor (C3aR) is a key mediator of post-ischemic cerebral injury, and pharmacological antagonism of the C3a receptor is neuroprotective in stroke. Cerebral ischemia injures brain endothelial cells, causing blood brain barrier (BBB) disruption which further exacerbates ischemic neuronal injury. In this study, we used an in vitro model of ischemia (oxygen glucose deprivation; OGD) to investigate the protective effect of a C3aR antagonist (C3aRA, SB290157) on brain endothelial cells (bEnd.3). Following 24 hours of reperfusion, OGD-induced cell death was assessed by TUNEL and Caspase-3 staining. Western blot and immunocytochemistry were utilized to demonstrate that OGD upregulates inflammatory, oxidative stress and antioxidant markers (ICAM-1, Cox-2, Nox-2 and MnSOD) in endothelial cells and that C3aRA treatment significantly attenuate these markers. We also found that C3aRA administration restored the expression level of the tight junction protein occludin in endothelial cells following OGD. Interestingly, OGD/reperfusion injury increased the phosphorylation of ERK1/2 and C3aR inhibition significantly reduced the activation of ERK suggesting that endothelial C3aR may act via ERK signaling. Furthermore, exogenous C3a administration stimulates these same inflammatory mechanisms both with and without OGD, and C3aRA suppresses these C3a-mediated responses, supporting an antagonist role for C3aRA. Based on these results, we conclude that C3aRA administration attenuates inflammation, oxidative stress, ERK activation, and protects brain endothelial cells following experimental brain ischemia.
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Affiliation(s)
- Saif Ahmad
- Department of Neurosurgery, Barrow Neurological Institute, St. Joseph's Hospital and Medical Center, Dignity Health, Phoenix, Arizona 85013, USA
| | - Adam Kindelin
- Department of Neurosurgery, Barrow Neurological Institute, St. Joseph's Hospital and Medical Center, Dignity Health, Phoenix, Arizona 85013, USA
| | - Shah Alam Khan
- Department of Neurosurgery, Barrow Neurological Institute, St. Joseph's Hospital and Medical Center, Dignity Health, Phoenix, Arizona 85013, USA.,Oman Medical College, Muscat 130, Sultanate of Oman
| | - Maaz Ahmed
- Department of Neurosurgery, Barrow Neurological Institute, St. Joseph's Hospital and Medical Center, Dignity Health, Phoenix, Arizona 85013, USA
| | - Md Nasrul Hoda
- Department of Neurology, Barrow Neurological Institute, St. Joseph's Hospital and Medical Center, Dignity Health, Phoenix, Arizona 85013, USA
| | - Kanchan Bhatia
- Department of Neurosurgery, Barrow Neurological Institute, St. Joseph's Hospital and Medical Center, Dignity Health, Phoenix, Arizona 85013, USA.,School of Mathematical and Natural Sciences, Arizona State University, Phoenix, AZ 85004, USA
| | - Andrew F Ducruet
- Department of Neurosurgery, Barrow Neurological Institute, St. Joseph's Hospital and Medical Center, Dignity Health, Phoenix, Arizona 85013, USA
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Ishola IO, Osele MO, Chijioke MC, Adeyemi OO. Isorhamnetin enhanced cortico-hippocampal learning and memory capability in mice with scopolamine-induced amnesia: Role of antioxidant defense, cholinergic and BDNF signaling. Brain Res 2019; 1712:188-196. [PMID: 30772273 DOI: 10.1016/j.brainres.2019.02.017] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2018] [Revised: 02/10/2019] [Accepted: 02/14/2019] [Indexed: 12/22/2022]
Abstract
Isorhamnetin (IRN), a 3'-O-methylated metabolite of quercetin has antioxidant, anti-inflammatory and neuroprotective properties. In this study, we investigated the learning and memory enhancing effects of IRN on spatial and non-spatial learning and memory deficits induced by scopolamine (3 mg/kg, i.p; muscarinic antagonist) using the novel object recognition test (NORT) and Morris water maze (MWM) task. IRN (1, 5 or 50 mg/kg, p.o.) or vehicle was administered to male albino for 3 consecutive days, scopolamine was given 1 h after last administration on day 3. Five minutes post scopolamine administration the behavioural test of cognitive function was carried out. One hour after probe test (MWM task) on day 7, the brains were isolated to assay for oxidative stress, cholinesterase activity and brain derived neurotrophic factor (BDNF) levels in the prefrontal cortex (PFC) and hippocampus (HIPPO). IRN treatment significantly improved scopolamine-induced learning and memory impairment in behavioural tests. IRN reduced malondialdehyde and nitrite generation induced by scopolamine through increase in glutathione (GSH) level, superoxide dismutase (SOD) and catalase (CAT) activities in the prefrontal cortex and hippocampus. In addition, IRN attenuates scopolamine induced cholinesterase activity and BDNF level in the prefrontal cortex and hippocampus of mice. Findings from this study showed that IRN possesses cognition and memory enhancing properties possibly through enhancement of antioxidant defense system, cholinergic signaling and synaptic plasticity.
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Affiliation(s)
- Ismail O Ishola
- Department of Pharmacology, Therapeutics and Toxicology, Faculty of Basic Medical Sciences, College of Medicine, University of Lagos, PMB 12003, Surulere, Lagos State, Nigeria
| | - Mmesomachukwu O Osele
- Department of Pharmacology, Therapeutics and Toxicology, Faculty of Basic Medical Sciences, College of Medicine, University of Lagos, PMB 12003, Surulere, Lagos State, Nigeria
| | - Micah C Chijioke
- Department of Pharmacology, Therapeutics and Toxicology, Faculty of Basic Medical Sciences, College of Medicine, University of Lagos, PMB 12003, Surulere, Lagos State, Nigeria
| | - Olufunmilayo O Adeyemi
- Department of Pharmacology, Therapeutics and Toxicology, Faculty of Basic Medical Sciences, College of Medicine, University of Lagos, PMB 12003, Surulere, Lagos State, Nigeria
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Skalski B, Lis B, Pecio Ł, Kontek B, Olas B, Żuchowski J, Stochmal A. Isorhamnetin and its new derivatives isolated from sea buckthorn berries prevent H 2O 2/Fe - Induced oxidative stress and changes in hemostasis. Food Chem Toxicol 2019; 125:614-620. [PMID: 30738133 DOI: 10.1016/j.fct.2019.02.014] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Revised: 01/18/2019] [Accepted: 02/05/2019] [Indexed: 01/24/2023]
Abstract
The objective of this study is to investigate the biological effects of phenolic compounds extracted from the sea buckthorn berries on oxidative stress and hemostasis. The sea buckthorn (Elaeagnus rhamnoides (L.) A. Nelson) berries are rich in flavonoids and non-polar compounds. In this study, the activity of the phenolic fraction from the sea buckthorn berries was evaluated in vitro in comparison with three phenolic compounds: isorhamnetin (compound 1) and its two new derivatives: compound 2 (isorhamnetin 3-O-beta-glucoside-7-O-alfa-rhamnoside) and compound 3 (isorhamnetin 3-O-beta-glucoside-7-O-alfa-(3"'-isovaleryl)-rhamnoside). The impact of these phenolic compounds and the phenolic fraction against the effect of the donor of hydroxyl radicals - H2O2/Fe on proteins and lipids in human plasma was measured. Additionally, the aim of the study was to determine the effect of these phenolic compounds and the phenolic fraction on various typical hemostasis parameters. Our results show that the used derivatives of isorhamnetin possess different biological properties (e.g. antioxidant, anti-platelet and anticoagulant). The tested compounds can be seen as new natural beneficial compounds to be used in prevention and treatment of cardiovascular diseases.
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Affiliation(s)
- Bartosz Skalski
- Department of General Biochemistry, Faculty of Biology and Environmental Protection, University of Łódź, 90-236, Łódź, Poland
| | - Bernadetta Lis
- Department of General Biochemistry, Faculty of Biology and Environmental Protection, University of Łódź, 90-236, Łódź, Poland
| | - Łukasz Pecio
- Department of Biochemistry, Institute of Soil Science and Plant Cultivation, State Research Institute, 24-100, Puławy, Poland
| | - Bogdan Kontek
- Department of General Biochemistry, Faculty of Biology and Environmental Protection, University of Łódź, 90-236, Łódź, Poland
| | - Beata Olas
- Department of General Biochemistry, Faculty of Biology and Environmental Protection, University of Łódź, 90-236, Łódź, Poland.
| | - Jerzy Żuchowski
- Department of Biochemistry, Institute of Soil Science and Plant Cultivation, State Research Institute, 24-100, Puławy, Poland
| | - Anna Stochmal
- Department of Biochemistry, Institute of Soil Science and Plant Cultivation, State Research Institute, 24-100, Puławy, Poland
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Braun JD, Pastene DO, Breedijk A, Rodriguez A, Hofmann BB, Sticht C, von Ochsenstein E, Allgayer H, van den Born J, Bakker S, Hauske SJ, Krämer BK, Yard BA, Albrecht T. Methylglyoxal down-regulates the expression of cell cycle associated genes and activates the p53 pathway in human umbilical vein endothelial cells. Sci Rep 2019; 9:1152. [PMID: 30718683 PMCID: PMC6362029 DOI: 10.1038/s41598-018-37937-1] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2018] [Accepted: 12/12/2018] [Indexed: 12/25/2022] Open
Abstract
Although methylglyoxal (MGO) has emerged as key mediator of diabetic microvascular complications, the influence of MGO on the vascular transcriptome has not thoroughly been assessed. Since diabetes is associated with low grade inflammation causing sustained nuclear factor-kappa B (NF-κB) activation, the current study addressed 1) to what extent MGO changes the transcriptome of human umbilical vein endothelial cells (HUVECs) exposed to an inflammatory milieu, 2) what are the dominant pathways by which these changes occur and 3) to what extent is this affected by carnosine, a putative scavenger of MGO. Microarray analysis revealed that exposure of HUVECs to high MGO concentrations significantly changes gene expression, characterized by prominent down-regulation of cell cycle associated genes and up-regulation of heme oxygenase-1 (HO-1). KEGG-based pathway analysis identified six significantly enriched pathways of which the p53 pathway was the most affected. No significant enrichment of inflammatory pathways was found, yet, MGO did inhibit VCAM-1 expression in Western blot analysis. Carnosine significantly counteracted MGO-mediated changes in a subset of differentially expressed genes. Collectively, our results suggest that MGO initiates distinct transcriptional changes in cell cycle/apoptosis genes, which may explain MGO toxicity at high concentrations. MGO did not augment TNF-α induced inflammation.
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Affiliation(s)
- Jana D Braun
- Department of Nephrology, Endocrinology and Rheumatology, Fifth Department of Medicine, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany.
| | - Diego O Pastene
- Department of Nephrology, Endocrinology and Rheumatology, Fifth Department of Medicine, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany
| | - Annette Breedijk
- Department of Nephrology, Endocrinology and Rheumatology, Fifth Department of Medicine, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany
| | - Angelica Rodriguez
- Department of Nephrology, Endocrinology and Rheumatology, Fifth Department of Medicine, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany
| | - Björn B Hofmann
- Department of Nephrology, Endocrinology and Rheumatology, Fifth Department of Medicine, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany
| | - Carsten Sticht
- Center of Medical Research, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany
| | - Elke von Ochsenstein
- Department of Experimental Surgery - Cancer Metastasis, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany
| | - Heike Allgayer
- Department of Experimental Surgery - Cancer Metastasis, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany
| | - Jacob van den Born
- Department of Internal Medicine, University Medical Centre Groningen, Groningen, Netherlands
| | - Stephan Bakker
- Department of Internal Medicine, University Medical Centre Groningen, Groningen, Netherlands
| | - Sibylle J Hauske
- Department of Nephrology, Endocrinology and Rheumatology, Fifth Department of Medicine, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany
| | - Bernhard K Krämer
- Department of Nephrology, Endocrinology and Rheumatology, Fifth Department of Medicine, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany
| | - Benito A Yard
- Department of Nephrology, Endocrinology and Rheumatology, Fifth Department of Medicine, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany
| | - Thomas Albrecht
- Department of Nephrology, Endocrinology and Rheumatology, Fifth Department of Medicine, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany
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Pan J, Jin R, Shen M, Wu R, Xu S. Acamprosate Protects Against Adjuvant-Induced Arthritis in Rats via Blocking the ERK/MAPK and NF-κB Signaling Pathway. Inflammation 2018; 41:1194-1199. [PMID: 29656315 DOI: 10.1007/s10753-018-0766-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Osteoarthritis is a type of joint disease that results from the breakdown of joint cartilage and underlying bone and is believed to be caused by mechanical stress on the joint and low-grade inflammatory processes. Acamprosate significantly ameliorates the pathological features of experimental autoimmune encephalomyelitis due to its anti-inflammatory effect. The aims of the present study were to investigate the anti-arthritis activities of acamprosate and elucidate the underlying mechanisms. Adjuvant-induced arthritis (AIA) was induced by intradermal injection of complete Freund's adjuvant. Male Wistar rats were randomly divided into five groups: (1) sham control group, (2) AIA group, (3) acamprosate 10 mg/kg (AIA + ACA10), (4) acamprosate 30 mg/kg (AIA + ACA30), and (5) acamprosate 100 mg/kg (AIA + ACA100). Paw swelling and the arthritis index were measured, and the production of IL-1β, IL-6, and TNF-α was detected by ELISA in serum. The expression of inflammation-related molecules, including c-Raf, ERK1/2, and NF-κB, was determined by Western blotting. We found that acamprosate significantly suppressed paw swelling and the arthritis index in AIA rats. Moreover, acamprosate also significantly suppressed the production of TNF-α, IL-1β, and IL-6 in serum, which is elevated by AIA induction. Finally, acamprosate inhibited p-c-Raf and p-ERK1/2 and NF-κB activation after AIA treatment. These results indicate that acamprosate has an anti-inflammatory effect on adjuvant-induced arthritic rats via inhibiting the ERK/MAPK and NF-κB signaling pathways, and acamprosate may serve as a promising novel therapeutic agent for osteoarthritis.
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Affiliation(s)
- Jun Pan
- Department of Orthopedics, The First Affiliated Hospital, Zhejiang University, 79 Qingchun Road, Hangzhou, 310003, China
| | - Rilong Jin
- Department of Orthopedics, The First Affiliated Hospital, Zhejiang University, 79 Qingchun Road, Hangzhou, 310003, China
| | - Miaoda Shen
- Department of Orthopedics, The First Affiliated Hospital, Zhejiang University, 79 Qingchun Road, Hangzhou, 310003, China
| | - Ronghuan Wu
- Department of Orthopedics, The First Affiliated Hospital, Zhejiang University, 79 Qingchun Road, Hangzhou, 310003, China
| | - Sanzhong Xu
- Department of Orthopedics, The First Affiliated Hospital, Zhejiang University, 79 Qingchun Road, Hangzhou, 310003, China.
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Xingnaojing Injection Protects against Cerebral Ischemia Reperfusion Injury via PI3K/Akt-Mediated eNOS Phosphorylation. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2018; 2018:2361046. [PMID: 30158991 PMCID: PMC6106974 DOI: 10.1155/2018/2361046] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/24/2018] [Revised: 07/16/2018] [Accepted: 07/26/2018] [Indexed: 11/17/2022]
Abstract
Xingnaojing (XNJ) injection, derived from traditional Chinese medicine formulation, has a protective effect against stroke, but the underlying mechanism is unclear, which severely limited its clinical application. This research aims to elucidate the role and mechanism of XNJ in reducing cerebral ischemic reperfusion (I/R) injury. Rats received 2 h cerebral ischemia followed by reperfusion of 24 h and were intraperitoneally given 5, 10, or 15 ml/kg XNJ 24 h before ischemia and at the onset of reperfusion, respectively. TTC staining, HE staining, and neurological score were implied to evaluate the effectiveness of XNJ. The protein expressions of PI3K/Akt and eNOS signaling were measured. Experiments were further performed in human brain microvascular endothelial cells (HBMECs) to investigate the protective mechanisms of XNJ. HBMECs were subjected to 3 h oxygen and glucose deprivation following 24 h of reoxygenation (OGD) to mimic cerebral I/R in vitro. PI3K inhibitor LY294002 was added with or without the preconditioning of XNJ. Multiple methods including western blot, immunofluorescence, DAPI staining, JC-1, and flow cytometry were carried out to evaluate the effect of XNJ on HBMECs. XNJ could improve rat cerebral ischemic injury and OGD induced HBMECs apoptosis. In vivo and in vitro researches indicated that the mechanism might be relevant to the activation of PI3K/Akt/eNOS signaling.
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Jia M, Lu X, Wang Z, Zhao L, Zhang S. Effects of Fengliao-Changweikang in Diarrhea-predominant Irritable Bowel Syndrome Rats and Its Mechanism Involving Colonic Motility. J Neurogastroenterol Motil 2018; 24:479-489. [PMID: 29715711 PMCID: PMC6034674 DOI: 10.5056/jnm17093] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/28/2017] [Revised: 10/21/2017] [Accepted: 11/20/2017] [Indexed: 12/13/2022] Open
Abstract
Background/Aims This study was designed to investigate the effect of Fengliao-Changweikang (FLCWK) in diarrhea-predominant irritable bowel syndrome (IBS-D) rats and explore its underlying mechanisms. Methods IBS-D model rats were induced by neonatal maternal separation (NMS) combined with restraint stress (RS). In in vivo experiments, the model rats were randomly divided into 5 groups: NMS + RS, FLCWK (low dose, middle dose, and high dose), and pinaverium bromide. The normal control (no handling) rats were classified as the NH group. The therapeutic effect of FLCWK was evaluated by fecal characteristics, electromyographic response and abdominal withdrawal reflex scores. In in vitro experiments, the model rats were randomly divided into 2 groups: NMS + RS, FLCWK (middle dose), and no handling rats were used as the NH group. The differences in basic tension and ACh-induced tension of isolated colonic longitudinal smooth muscle strips (CLSMs) among the 3 groups were observed. In addition, different inhibitors (nifedipine, TMB-8, L-NAME, methylene blue, and 4-AP) were pretreated to explore the underlying mechanisms. Results In in vivo experiments, fecal characteristics, electromyographic response, and abdominal withdrawal reflex scores significantly improved in the FLCWK group, compared with the NMS + RS group. In in vitro experiments, the basic tension and ACh-induced tension of CLSMs in IBS-D rats were significantly inhibited by FLCWK. After pre-treatment with different inhibitors, the ACh-induced tension of CLSMs in each group showed no significant difference. Conclusions FLCWK manifested curative effect in IBS-D rats by inhibiting colonic contraction. The underlying mechanisms may be related to regulatory pathway of nitric oxide/cGMP/Ca2+ and specific potassium channels.
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Affiliation(s)
- Mengdi Jia
- Digestive Disease Center, Beijing Hospital of Traditional Chinese Medicine Affiliated to Capital Medical University, Beijing, China
| | - Xiaofang Lu
- Digestive Disease Center, Beijing Hospital of Traditional Chinese Medicine Affiliated to Capital Medical University, Beijing, China
| | - Zhengfang Wang
- Digestive Disease Center, Beijing Hospital of Traditional Chinese Medicine Affiliated to Capital Medical University, Beijing, China
| | - Luqing Zhao
- Digestive Disease Center, Beijing Hospital of Traditional Chinese Medicine Affiliated to Capital Medical University, Beijing, China
| | - Shengsheng Zhang
- Digestive Disease Center, Beijing Hospital of Traditional Chinese Medicine Affiliated to Capital Medical University, Beijing, China
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Yang L, Li X, Wu Z, Feng C, Zhang T, Dai S, Dong Q. Inhibition of Methylglyoxal-Induced Histone H1 N ε-Carboxymethyllysine Formation by (+)-Catechin. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:5812-5820. [PMID: 29758984 DOI: 10.1021/acs.jafc.8b00826] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Reactive dicarbonyl species (RCS) such as methylglyoxal (MGO) and glyoxal (GO) are common intermediates in protein damage, leading to the formation of advanced glycation end products (AGEs) through nonenzymatic glycation. (+)-Catechin, a natural plant extract from tea, has been evaluated for its ability in trapping GO and MGO. However, (+)-catechin is also reported to have both antioxidant ability and pro-oxidant properties. Until now, whether (+)-catechin can inhibit the formation of nonenzymatic glycation and the mechanism of the inhibition in nucleoprotein nonenzymatic glycation is still unclear. In the present study, histone H1 and MGO were used to establish an in vitro (100 mM phosphate buffer solution (PBS), pH 7.4, 37 °C) protein glycation model to study the trapping ability of (+)-catechin. Our data show that MGO caused dose-dependent protein damage, and the content of MGO-induced Schiff base formation was inhibited by (+)-catechin when the molecular ratio of catechin:MGO was 1:6. The formation of Nε-carboxymethyllysine (CML) was reduced significantly when the ratio of (+)-catechin and MGO was 1:1, which was similar to the inhibition effect of aminoguanidine (AG). The formation of CML under in vitro conditions can be inhibited by low concentration (12.5-100 μM) of (+)-catechin but not with high concentration (200-800 μM) of (+)-catechin. The reason is that the high concentration of (+)-catechin did not inhibit CML formations due to H2O2 produced by (+)-catechin. In the presence of catalase, catechin can inhibit MGO-induced CML formation. In conclusion, the trapping ability of (+)-catechin may be more effective at the early stage of nonenzymatic glycation. However, a high concentration (200-800 μM) of (+)-catechin may not inhibit the formation of CML because it induced the increase of H2O2 formation.
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Affiliation(s)
- Lijun Yang
- College of Veterinary Medicine , Northwest A&F University , Yangling , Shaanxi 712100 , People's Republic of China
| | - Xinping Li
- College of Veterinary Medicine , Northwest A&F University , Yangling , Shaanxi 712100 , People's Republic of China
| | - Zhaozhen Wu
- College of Veterinary Medicine , Northwest A&F University , Yangling , Shaanxi 712100 , People's Republic of China
| | - Cuixia Feng
- College of Veterinary Medicine , Northwest A&F University , Yangling , Shaanxi 712100 , People's Republic of China
| | - Tianyu Zhang
- College of Veterinary Medicine , Northwest A&F University , Yangling , Shaanxi 712100 , People's Republic of China
| | - Shaohua Dai
- College of Veterinary Medicine , Northwest A&F University , Yangling , Shaanxi 712100 , People's Republic of China
| | - Qiang Dong
- College of Veterinary Medicine , Northwest A&F University , Yangling , Shaanxi 712100 , People's Republic of China
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Pan Y, Wang N, Xia P, Wang E, Guo Q, Ye Z. Inhibition of Rac1 ameliorates neuronal oxidative stress damage via reducing Bcl-2/Rac1 complex formation in mitochondria through PI3K/Akt/mTOR pathway. Exp Neurol 2017; 300:149-166. [PMID: 29129468 DOI: 10.1016/j.expneurol.2017.10.030] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2017] [Revised: 10/20/2017] [Accepted: 10/30/2017] [Indexed: 01/28/2023]
Abstract
Although the neuroprotective effects of Rac1 inhibition have been reported in various cerebral ischemic models, the molecular mechanisms of action have not yet been fully elucidated. In this study, we investigated whether the inhibition of Rac1 provided neuroprotection in a diabetic rat model of focal cerebral ischemia and hyperglycemia-exposed PC-12 cells. Intracerebroventricular administration of lentivirus expressing the Rac1 small hairpin RNA (shRNA) and specific Rac1 inhibitor NSC23766 not only decreased the infarct volumes and improved neurologic deficits with a correlated significant activation of mitochondrial DNA specific proteins, such as OGG1 and POLG, but also elevated Bcl-2 S70 phosphorylation in mitochondria. Furthermore, the levels of p-PI3K, p-Akt and p-mTOR increased, while 8-OHdG, ROS production and Bcl-2/Rac1 complex formation in mitochondria reduced in both Rac1-shRNA- and NSC23766-treated rats. Moreover, to confirm our in vivo observations, inhibition of Rac1 activity by NSC23766 suppressed the interactions between Bcl-2 and Rac1 in the mitochondria of PC-12 cells cultured in high glucose conditions and protected PC-12 cells from high glucose-induced neurotoxicity. More importantly, these beneficial effects of Rac1 inhibition were abolished by PI3K inhibitor LY294002. In contrast to NSC23766 treatment, LY294002 had little effect on the decrement of p-PTEN level. Taken together, these findings revealed novel neuroprotective roles of Rac1 inhibition against cerebral ischemic reperfusion injury in vivo and high glucose-induced neurotoxicity in PC-12 cells in vitro, by reducing Bcl-2/Rac1 complex formation in mitochondria through the activation of PI3K/Akt/mTOR survival pathway.
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Affiliation(s)
- Yundan Pan
- Department of Anesthesiology, Affiliated Xiangya Hospital of Central South University, Changsha 410078, Hunan Province, China
| | - Na Wang
- Department of Anesthesiology, Affiliated Xiangya Hospital of Central South University, Changsha 410078, Hunan Province, China
| | - Pingping Xia
- Department of Anesthesiology, Affiliated Xiangya Hospital of Central South University, Changsha 410078, Hunan Province, China
| | - E Wang
- Department of Anesthesiology, Affiliated Xiangya Hospital of Central South University, Changsha 410078, Hunan Province, China
| | - Qulian Guo
- Department of Anesthesiology, Affiliated Xiangya Hospital of Central South University, Changsha 410078, Hunan Province, China
| | - Zhi Ye
- Department of Anesthesiology, Affiliated Xiangya Hospital of Central South University, Changsha 410078, Hunan Province, China.
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Park JY, Kim SI, Lee HJ, Kim SS, Kwon YS, Chun W. Isorhamnetin-3-O-Glucuronide Suppresses JNK and p38 Activation and Increases Heme-Oxygenase-1 in Lipopolysaccharide-Challenged RAW264.7 Cells. Drug Dev Res 2017; 77:143-51. [PMID: 27113811 DOI: 10.1002/ddr.21301] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2016] [Accepted: 03/08/2016] [Indexed: 12/24/2022]
Abstract
Preclinical Research Isorhanmetin (ISH) exhibits a wide range of biological properties including anticancer, anti-oxidant and anti-inflammatory activities. However, the pharmacological properties of isorhamnetin-3-O-glucuronide (IG), a glycoside derivative of ISH, have not been extensively examined. The objective of this study was to examine the anti-inflammatory properties of IG and its underlying mechanism in lipopolysaccharide (LPS)-challenged RAW264.7 macrophage cells in comparison with its aglycone, ISH. IG suppressed LPS-induced extracellular secretion of the proinflammatory mediators, nitric oxide (NO) and PGE2 , and proinflammatory protein expressions of inducible nitric oxide synthase (iNOS) and cyclooxygenase-2. IG also increased expression of heme oxygenase-1 (HO-1). IG attenuated LPS-induced activation of c-Jun N-terminal kinase (JNK) and p38 in a concentration-dependent manner with negligible suppression of extracellular signal-regulated kinases (ERK) phosphorylation. In conclusion, this study demonstrates that IG exerts anti-inflammatory activity by increasing HO-1 expression and by suppressing JNK and p38 signaling pathways in LPS-challenged RAW264.7 macrophage cells. Drug Dev Res 77 : 143-151, 2016. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Jin-Young Park
- Department of Pharmacology, College of Medicine, Kangwon National University, Chuncheon, 200-701, Korea
| | - Song-In Kim
- Department of Pharmacology, College of Medicine, Kangwon National University, Chuncheon, 200-701, Korea
| | - Hee Jae Lee
- Department of Pharmacology, College of Medicine, Kangwon National University, Chuncheon, 200-701, Korea
| | - Sung-Soo Kim
- Department of Pharmacology, College of Medicine, Kangwon National University, Chuncheon, 200-701, Korea
| | - Yong-Soo Kwon
- College of Pharmacy, Kangwon National University, Chuncheon, 200-701, Korea
| | - Wanjoo Chun
- Department of Pharmacology, College of Medicine, Kangwon National University, Chuncheon, 200-701, Korea
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Qin W, Guan D, Ma R, Yang R, Xing G, Shi H, Tang G, Li J, Lv H, Jiang Y. Effects of trigonelline inhibition of the Nrf2 transcription factor in vitro on Echinococcus granulosus. Acta Biochim Biophys Sin (Shanghai) 2017; 49:696-705. [PMID: 28810706 DOI: 10.1093/abbs/gmx067] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2017] [Indexed: 01/08/2023] Open
Abstract
The aim of this study was to investigate the impact of trigonelline (TRG) on Echinococcus granulosus, and to explore the inhibition impact of nuclear factor erythroid-2-related factor 2 (Nrf2) signaling pathway on E. granulosus protoscoleces. Echinococcus granulosus protoscoleces were incubated with various concentrations of TRG, and then Nrf2 protein expression and its localization in protoscoleces were detected by western blot analysis and immunofluorescence assay, respectively. Reactive oxygen species (ROS) level in protoscoleces was measured using ROS detection kit. Caspase-3 activity was measured using a caspase-3 activity assay kit, and NAD(P)H quinone oxidoreductase (NQO)-1 and heme oxygenase (HO)-1 activities in protoscoleces were measured by ELISA. The effect of TRG on protoscoleces viability was investigated using 0.1% eosin staining, and ultrastructural alterations in protoscoleces were examined by scanning electron microscopy (SEM). Immunolocalization experiment clearly showed that Nrf2 protein was predominantly present in cells of protoscoleces. TRG treatment reduced NQO-1 and HO-1 activities in protoscoleces, but could increase ROS level at early time. Protoscoleces could not survive when treated with 250 μM TRG for 12 days. SEM results showed that TRG-treated protoscoleces presented damage in the protoscoleces region, including hook deformation, lesions, and digitiform protuberance. Nrf2 protein expression was significantly decreased and caspase-3 activity was clearly increased in protoscoleces treated with TRG for 24 and 48 h, respectively, when compared with that in controls (P < 0.05). Our results demonstrated that TRG had scolicidal activity against E. granulosus protoscoleces. Nrf2 protein was mainly expressed in the cells and TRG could efficiently inhibit the Nrf2 signaling pathway in E. granulosus.
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Affiliation(s)
- Wenjuan Qin
- Department of Histology and Embryology, School of Medicine, Shihezi University, Shihezi 832000, China
- Department of Ultrasound Diagnosis, The First Affiliated Hospital, School of Medicine, Shihezi University, Shihezi 832000, China
| | - Dongfang Guan
- Department of Histology and Embryology, School of Medicine, Shihezi University, Shihezi 832000, China
| | - Rongji Ma
- Department of Histology and Embryology, School of Medicine, Shihezi University, Shihezi 832000, China
| | - Rentan Yang
- Department of Hepatobiliary Surgery, The First Affiliated Hospital, School of Medicine, Shihezi University, Shihezi 832000, China
| | - Guoqiang Xing
- Department of Hepatobiliary Surgery, The First Affiliated Hospital, School of Medicine, Shihezi University, Shihezi 832000, China
| | - Hongjuan Shi
- Department of Histology and Embryology, School of Medicine, Shihezi University, Shihezi 832000, China
| | - Guangyao Tang
- Department of Hepatobiliary Surgery, The First Affiliated Hospital, School of Medicine, Shihezi University, Shihezi 832000, China
| | - Jiajie Li
- Department of Histology and Embryology, School of Medicine, Shihezi University, Shihezi 832000, China
| | - Hailong Lv
- Department of Hepatobiliary Surgery, The First Affiliated Hospital, School of Medicine, Shihezi University, Shihezi 832000, China
| | - Yufeng Jiang
- Department of Histology and Embryology, School of Medicine, Shihezi University, Shihezi 832000, China
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Methylglyoxal-Glyoxalase 1 Balance: The Root of Vascular Damage. Int J Mol Sci 2017; 18:ijms18010188. [PMID: 28106778 PMCID: PMC5297820 DOI: 10.3390/ijms18010188] [Citation(s) in RCA: 76] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2016] [Revised: 01/09/2017] [Accepted: 01/10/2017] [Indexed: 12/20/2022] Open
Abstract
The highly reactive dicarbonyl methylglyoxal (MGO) is mainly formed as byproduct of glycolysis. Therefore, high blood glucose levels determine increased MGO accumulation. Nonetheless, MGO levels are also increased as consequence of the ineffective action of its main detoxification pathway, the glyoxalase system, of which glyoxalase 1 (Glo1) is the rate-limiting enzyme. Indeed, a physiological decrease of Glo1 transcription and activity occurs not only in chronic hyperglycaemia but also with ageing, during which MGO accumulation occurs. MGO and its advanced glycated end products (AGEs) are associated with age-related diseases including diabetes, vascular dysfunction and neurodegeneration. Endothelial dysfunction is the first step in the initiation, progression and clinical outcome of vascular complications, such as retinopathy, nephropathy, impaired wound healing and macroangiopathy. Because of these considerations, studies have been centered on understanding the molecular basis of endothelial dysfunction in diabetes, unveiling a central role of MGO-Glo1 imbalance in the onset of vascular complications. This review focuses on the current understanding of MGO accumulation and Glo1 activity in diabetes, and their contribution on the impairment of endothelial function leading to diabetes-associated vascular damage.
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Yang PF, Song XY, Zeng T, Ai QD, Liu DD, Zuo W, Zhang S, Xia CY, He X, Chen NH. IMM-H004, a coumarin derivative, attenuated brain ischemia/reperfusion injuries and subsequent inflammation in spontaneously hypertensive rats through inhibition of VCAM-1. RSC Adv 2017. [DOI: 10.1039/c7ra02154b] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
We studied the effect of IMM-H004 in treating brain I/R injury in spontaneously hypertensive rats and showed that IMM-H004 could efficiently ameliorate neurological defects and infarct volume in a time and dose dependent manner.
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Affiliation(s)
- Peng-Fei Yang
- Department of State Key Laboratory of Bioactive Substances and Functions of Natural Medicines
- Institute of Materia Medica & Neuroscience Center
- Chinese Academy of Medical Sciences
- Peking Union Medical College
- Beijing 100050
| | - Xiu-Yun Song
- Department of State Key Laboratory of Bioactive Substances and Functions of Natural Medicines
- Institute of Materia Medica & Neuroscience Center
- Chinese Academy of Medical Sciences
- Peking Union Medical College
- Beijing 100050
| | - Ting Zeng
- College of Pharmacy
- Hunan University of Chinese Medicine
- Changsha
- China
| | - Qi-Di Ai
- College of Pharmacy
- Hunan University of Chinese Medicine
- Changsha
- China
| | - Dan-Dan Liu
- Tianjin University of Traditional Chinese Medicine
- Tianjin
- China
| | - Wei Zuo
- Department of State Key Laboratory of Bioactive Substances and Functions of Natural Medicines
- Institute of Materia Medica & Neuroscience Center
- Chinese Academy of Medical Sciences
- Peking Union Medical College
- Beijing 100050
| | - Shuai Zhang
- Department of State Key Laboratory of Bioactive Substances and Functions of Natural Medicines
- Institute of Materia Medica & Neuroscience Center
- Chinese Academy of Medical Sciences
- Peking Union Medical College
- Beijing 100050
| | - Cong-Yuan Xia
- Department of State Key Laboratory of Bioactive Substances and Functions of Natural Medicines
- Institute of Materia Medica & Neuroscience Center
- Chinese Academy of Medical Sciences
- Peking Union Medical College
- Beijing 100050
| | - Xin He
- Tianjin University of Traditional Chinese Medicine
- Tianjin
- China
| | - Nai-Hong Chen
- Department of State Key Laboratory of Bioactive Substances and Functions of Natural Medicines
- Institute of Materia Medica & Neuroscience Center
- Chinese Academy of Medical Sciences
- Peking Union Medical College
- Beijing 100050
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Liao LX, Zhao MB, Dong X, Jiang Y, Zeng KW, Tu PF. TDB protects vascular endothelial cells against oxygen-glucose deprivation/reperfusion-induced injury by targeting miR-34a to increase Bcl-2 expression. Sci Rep 2016; 6:37959. [PMID: 27885275 PMCID: PMC5122842 DOI: 10.1038/srep37959] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2016] [Accepted: 11/03/2016] [Indexed: 12/30/2022] Open
Abstract
Prolonged ischemia can result in apoptotic death of vascular endothelial cells and lead to ischemic vascular diseases including vascular dementia, arteriosclerosis and brain oedema. Finding protective strategies to prevent this is therefore an urgent mission. Recent studies have shown that dysregulation of microRNAs (miRNAs) can lead to imbalance of Bcl-2 family proteins and mitochondrial dysfunction, leading to further damage of vascular cells under ischemic conditions. However, whether miRNAs can be used as a drug target for treating vascular diseases is not fully understood. In this study, we observed that the natural product 2,4,5-trihydroxybenzaldehyde (TDB) could effectively inhibit vascular cell apoptosis following oxygen-glucose deprivation/reperfusion (OGD/R) by maintaining mitochondrial membrane potential (MMP) and suppressing activation of the mitochondria-dependent caspase-9/3 apoptosis pathway. Furthermore, we identified miR-34a, a crucial negative regulator of Bcl-2, as a target for the protective effect of TDB on vascular cells. TDB-induced suppression of miR-34a resulted in a significant upregulation of Bcl-2 protein, MMP maintenance, and the survival of vascular cells following OGD/R. Our findings suggest that targeting miR-34a with the natural product TDB may provide a novel strategy for the treatment of ischemic vascular injuries, and demonstrate the therapeutic potential in targeting miRNAs using appropriate small molecules.
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Affiliation(s)
- Li-Xi Liao
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
| | - Ming-Bo Zhao
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
| | - Xin Dong
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
| | - Yong Jiang
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
| | - Ke-Wu Zeng
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
| | - Peng-Fei Tu
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
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SIRT2 Plays Significant Roles in Lipopolysaccharides-Induced Neuroinflammation and Brain Injury in Mice. Neurochem Res 2016; 41:2490-500. [DOI: 10.1007/s11064-016-1981-2] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2016] [Revised: 04/18/2016] [Accepted: 04/22/2016] [Indexed: 01/01/2023]
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Chen X, Pang S, Lin J, Xia J, Wang Y. Allicin prevents oxidized low-density lipoprotein-induced endothelial cell injury by inhibiting apoptosis and oxidative stress pathway. BMC COMPLEMENTARY AND ALTERNATIVE MEDICINE 2016; 16:133. [PMID: 27207282 PMCID: PMC4875621 DOI: 10.1186/s12906-016-1126-9] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/09/2016] [Accepted: 05/13/2016] [Indexed: 12/26/2022]
Abstract
Background Vascular endothelial apoptosis is significantly associated with atherosclerosis and cardiovascular diseases, for which oxidized low-density lipoprotein (ox-LDL) is a major risk factor. Allicin, the primary active ingredient of garlic, has been found to have cardiovascular protective effect by changing the fatty-acid composition, but its effect on ox-LDL-induced vascular endothelial injury remains unclear. We investigated the protective effect of allicin on cell viability, LDH release, apoptosis and apoptotic signaling in human umbilical vein endothelial cells (HUVECs). Methods In cultured HUVEC cell line, ox-LDL induced injury was investigated. The cell viability and injury were evaluated by using cell proliferation Assay kit and LDH release assay. The apoptosis was evaluated by the Annexin V-FITC kit. The activity of caspase-3 was assessed using a colorimetric caspase-3 assay kit. The ROS production was evaluated by fluorometric assay and NADPH oxidase activity was assessed with a GENMED kit. Results Exposure of HUVECs to ox-LDL (150 μg/ml) reduced cell viability, induced apoptosis and increased activity of caspase-3, NADPH oxidase, and reactive oxygen species (ROS) production. The pretreatment with allicin (30 and 100 μM) significantly rescued the cell viability, inhibited ox-LDL-induced apoptosis and activity of caspase-3, NADPH oxidase and ROS production in HUVECs, and the protective effect is concentration-dependent. The allicin (100 μM) alone did not show significant difference from control. Our study demonstrated that allicin protected HUVECs from ox-LDL-induced endothelial injury by reducing the apoptosis, mediated by inhibition of caspase-3 and NADPH oxidase related apoptotic signaling. Conclusions Allicin prevents ox-LDL-induced endothelial cell injury by inhibiting apoptosis and oxidative stress pathway.
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49
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Zhao JJ, Song JQ, Pan SY, Wang K. Treatment with Isorhamnetin Protects the Brain Against Ischemic Injury in Mice. Neurochem Res 2016; 41:1939-48. [PMID: 27161367 DOI: 10.1007/s11064-016-1904-2] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2015] [Revised: 03/22/2016] [Accepted: 03/28/2016] [Indexed: 12/20/2022]
Abstract
Ischemic stroke is a major cause of morbidity and mortality, yet lacks effective neuroprotective treatments. The aim of this work was to investigate whether treatment with isorhamnetin protected the brain against ischemic injury in mice. Experimental stroke mice underwent the filament model of middle cerebral artery occlusion with reperfusion. Treatment with isorhamnetin or vehicle was initiated immediately at the onset of reperfusion. It was found that treatment of experimental stroke mice with isorhamnetin reduced infarct volume and caspase-3 activity (a biomarker of apoptosis), and improved neurological function recovery. Treatment of experimental stroke mice with isorhamnetin attenuated cerebral edema, improved blood-brain barrier function, and upregulated gene expression of tight junction proteins including occludin, ZO-1, and claudin-5. Treatment of experimental stroke mice with isorhamnetin activated Nrf2/HO-1, suppressed iNOS/NO, and led to reduced formation of MDA and 3-NT in ipsilateral cortex. In addition, treatment of experimental stroke mice with isorhamnetin suppressed activity of MPO (a biomarker of neutrophil infiltration) and reduced protein levels of IL-1β, IL-6, and TNF-α in ipsilateral cortex. Furthermore, it was found that treatment of experimental stroke mice with isorhamnetin reduced mRNA and protein expression of NMDA receptor subunit NR1 in ipsilateral cortex. In conclusion, treatment with isorhamnetin protected the brain against ischemic injury in mice. Isorhamnetin could thus be envisaged as a countermeasure for ischemic stroke but remains to be tested in humans.
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Affiliation(s)
- Jin-Jing Zhao
- Department of Neurology, 305th Hospital of the People's Liberation Army, Jia13 Wenjin Road, Beijing, 100017, China
| | - Jin-Qing Song
- Department of Pediatrics, Peking University First Hospital, Beijing, 100034, China
| | - Shu-Yi Pan
- Department of Hyperbaric Oxygen, Navy General Hospital of People's Liberation Army, Beijing, 100048, China
| | - Kai Wang
- Department of Neurology, 305th Hospital of the People's Liberation Army, Jia13 Wenjin Road, Beijing, 100017, China.
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