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Kim J, Lee S, Hong DG, Yang S, Tran CS, Kwak J, Kim MJ, Rajarathinam T, Chung KW, Jung YS, Ishigami A, Chang SC, Lee H, Yun H, Lee J. Amelioration of Astrocyte-Mediated Neuroinflammation by EI-16004 Confers Neuroprotection in an MPTP-induced Parkinson's Disease Model. Neuromolecular Med 2024; 26:1. [PMID: 38294608 DOI: 10.1007/s12017-023-08769-8] [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: 10/11/2023] [Accepted: 12/01/2023] [Indexed: 02/01/2024]
Abstract
Parkinson's disease (PD) is a neurodegenerative disorder that results in motor impairment due to dopaminergic neuronal loss. The pathology of PD is closely associated with neuroinflammation, which can be characterized by astrocyte activation. Thus, targeting the inflammatory response in astrocytes might provide a novel therapeutic approach. We conducted a luciferase assay on an in-house chemical library to identify compounds with anti-inflammatory effects capable of reducing MPP+-induced NF-κB activity in astrocytes. Among the compounds identified, EI-16004, a novel 3-benzyl-N-phenyl-1H-pyrazole-5-carboxamides, exhibited a significant anti-inflammatory effect by significantly reducing MPP+-induced astrocyte activation. Biochemical analysis and docking simulation indicated that EI-16004 inhibited the MPP+-induced phosphorylation of p65 by attenuating ERK phosphorylation, and EI-16004 reduced pro-inflammatory cytokine and chemokine levels in astrocytes. In vivo studies on the 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP)-induced PD model in male C57BL/6 mice showed that EI-16004 ameliorated motor impairment and protected against dopaminergic neuronal loss, and EI-16004 effectively mitigated the MPTP-induced astrocyte activation in striatum (STR) and substantia nigra (SN). These results indicate EI-16004 is a potential neuroprotective agent for the prevention and treatment of astrocyte-mediated neuroinflammatory conditions in PD.
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Affiliation(s)
- Jaehoon Kim
- College of Pharmacy, Pusan National University, Busan, 46241, Republic of Korea
- Research Institute for Drug Development, Pusan National University, Busan, 46241, Republic of Korea
| | - Seulah Lee
- College of Pharmacy, Pusan National University, Busan, 46241, Republic of Korea
- Neurodegenerative Diseases Research Group, Korea Brain Research Institute, Daegu, 41062, Republic of Korea
| | - Dong Geun Hong
- College of Pharmacy, Pusan National University, Busan, 46241, Republic of Korea
- Research Institute for Drug Development, Pusan National University, Busan, 46241, Republic of Korea
| | - Seonguk Yang
- College of Pharmacy, Pusan National University, Busan, 46241, Republic of Korea
- Research Institute for Drug Development, Pusan National University, Busan, 46241, Republic of Korea
| | - Cong So Tran
- College of Pharmacy, Pusan National University, Busan, 46241, Republic of Korea
- Research Institute for Drug Development, Pusan National University, Busan, 46241, Republic of Korea
| | - Jinsook Kwak
- College of Pharmacy, Pusan National University, Busan, 46241, Republic of Korea
- Research Institute for Drug Development, Pusan National University, Busan, 46241, Republic of Korea
| | - Min-Ju Kim
- College of Pharmacy, Pusan National University, Busan, 46241, Republic of Korea
- Research Institute for Drug Development, Pusan National University, Busan, 46241, Republic of Korea
| | - Thenmozhi Rajarathinam
- Department of Cogno-Mechatronics Engineering, College of Nanoscience and Nanotechnology, Pusan National University, Busan, 46241, Republic of Korea
| | - Ki Wung Chung
- College of Pharmacy, Pusan National University, Busan, 46241, Republic of Korea
- Research Institute for Drug Development, Pusan National University, Busan, 46241, Republic of Korea
| | - Young-Suk Jung
- College of Pharmacy, Pusan National University, Busan, 46241, Republic of Korea
- Research Institute for Drug Development, Pusan National University, Busan, 46241, Republic of Korea
| | - Akihito Ishigami
- Molecular Regulation of Aging, Tokyo Metropolitan Institute of Gerontology, Tokyo, 173-0015, Japan
| | - Seung-Cheol Chang
- Department of Cogno-Mechatronics Engineering, College of Nanoscience and Nanotechnology, Pusan National University, Busan, 46241, Republic of Korea
| | - Haeseung Lee
- College of Pharmacy, Pusan National University, Busan, 46241, Republic of Korea
- Research Institute for Drug Development, Pusan National University, Busan, 46241, Republic of Korea
| | - Hwayoung Yun
- College of Pharmacy, Pusan National University, Busan, 46241, Republic of Korea
- Research Institute for Drug Development, Pusan National University, Busan, 46241, Republic of Korea
| | - Jaewon Lee
- College of Pharmacy, Pusan National University, Busan, 46241, Republic of Korea.
- Research Institute for Drug Development, Pusan National University, Busan, 46241, Republic of Korea.
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Lu H, Chai J, Xu Z, Wu J, He S, Liao H, Huang P, Huang X, Chen X, Jiang H, Qu S, Xu X. Cath-KP, a novel peptide derived from frog skin, prevents oxidative stress damage in a Parkinson's disease model. Zool Res 2024; 45:108-124. [PMID: 38114437 PMCID: PMC10839659 DOI: 10.24272/j.issn.2095-8137.2023.101] [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: 05/29/2023] [Accepted: 09/11/2023] [Indexed: 12/21/2023] Open
Abstract
Parkinson's disease (PD) is a neurodegenerative condition that results in dyskinesia, with oxidative stress playing a pivotal role in its progression. Antioxidant peptides may thus present therapeutic potential for PD. In this study, a novel cathelicidin peptide (Cath-KP; GCSGRFCNLFNNRRPGRLTLIHRPGGDKRTSTGLIYV) was identified from the skin of the Asiatic painted frog ( Kaloula pulchra). Structural analysis using circular dichroism and homology modeling revealed a unique αββ conformation for Cath-KP. In vitro experiments, including free radical scavenging and ferric-reducing antioxidant analyses, confirmed its antioxidant properties. Using the 1-methyl-4-phenylpyridinium ion (MPP +)-induced dopamine cell line and 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP)-induced PD mice, Cath-KP was found to penetrate cells and reach deep brain tissues, resulting in improved MPP +-induced cell viability and reduced oxidative stress-induced damage by promoting antioxidant enzyme expression and alleviating mitochondrial and intracellular reactive oxygen species accumulation through Sirtuin-1 (Sirt1)/Nuclear factor erythroid 2-related factor 2 (Nrf2) pathway activation. Both focal adhesion kinase (FAK) and p38 were also identified as regulatory elements. In the MPTP-induced PD mice, Cath-KP administration increased the number of tyrosine hydroxylase (TH)-positive neurons, restored TH content, and ameliorated dyskinesia. To the best of our knowledge, this study is the first to report on a cathelicidin peptide demonstrating potent antioxidant and neuroprotective properties in a PD model by targeting oxidative stress. These findings expand the known functions of cathelicidins, and hold promise for the development of therapeutic agents for PD.
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Affiliation(s)
- Huanpeng Lu
- Department of Neurology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, China
- Guangdong-Hong Kong-Macao Greater Bay Area Center for Brain Science and Brain-Inspired Intelligence, Guangzhou, Guangdong 510515, China
- Key Laboratory of Mental Health of the Ministry of Education, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Jinwei Chai
- Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Zijian Xu
- Department of Neurology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, China
- Guangdong-Hong Kong-Macao Greater Bay Area Center for Brain Science and Brain-Inspired Intelligence, Guangzhou, Guangdong 510515, China
- Key Laboratory of Mental Health of the Ministry of Education, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Jiena Wu
- Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Songzhe He
- Department of Neurology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, China
- Guangdong-Hong Kong-Macao Greater Bay Area Center for Brain Science and Brain-Inspired Intelligence, Guangzhou, Guangdong 510515, China
- Key Laboratory of Mental Health of the Ministry of Education, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Hang Liao
- Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Peng Huang
- Department of Neurology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, China
- Guangdong-Hong Kong-Macao Greater Bay Area Center for Brain Science and Brain-Inspired Intelligence, Guangzhou, Guangdong 510515, China
- Key Laboratory of Mental Health of the Ministry of Education, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Xiaowen Huang
- Department of Dermatology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Xi Chen
- Department of Neurology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, China
- Guangdong-Hong Kong-Macao Greater Bay Area Center for Brain Science and Brain-Inspired Intelligence, Guangzhou, Guangdong 510515, China
- Key Laboratory of Mental Health of the Ministry of Education, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Haishan Jiang
- Department of Neurology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Shaogang Qu
- Department of Neurology, Ganzhou Hospital-Nanfang Hospital, Southern Medical University, Ganzhou, Jiangxi 341001, China
- Department of Neurology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, China
- Guangdong-Hong Kong-Macao Greater Bay Area Center for Brain Science and Brain-Inspired Intelligence, Guangzhou, Guangdong 510515, China
- Key Laboratory of Mental Health of the Ministry of Education, Southern Medical University, Guangzhou, Guangdong 510515, China. E-mail:
| | - Xueqing Xu
- Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, Guangdong 510515, China. E-mail:
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So YJ, Lee JU, Yang GS, Yang G, Kim SW, Lee JH, Kim JU. The Potentiality of Natural Products and Herbal Medicine as Novel Medications for Parkinson's Disease: A Promising Therapeutic Approach. Int J Mol Sci 2024; 25:1071. [PMID: 38256144 PMCID: PMC10816678 DOI: 10.3390/ijms25021071] [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: 11/22/2023] [Revised: 01/09/2024] [Accepted: 01/12/2024] [Indexed: 01/24/2024] Open
Abstract
As the global population ages, the prevalence of Parkinson's disease (PD) is steadily on the rise. PD demonstrates chronic and progressive characteristics, and many cases can transition into dementia. This increases societal and economic burdens, emphasizing the need to find effective treatments. Among the widely recognized causes of PD is the abnormal accumulation of proteins, and autophagy dysfunction accelerates this accumulation. The resultant Lewy bodies are also commonly found in Alzheimer's disease patients, suggesting an increased potential for the onset of dementia. Additionally, the production of free radicals due to mitochondrial dysfunction contributes to neuronal damage and degeneration. The activation of astrocytes and the M1 phenotype of microglia promote damage to dopamine neurons. The drugs currently used for PD only delay the clinical progression and exacerbation of the disease without targeting its root cause, and come with various side effects. Thus, there is a demand for treatments with fewer side effects, with much potential offered by natural products. In this study, we reviewed a total of 14 articles related to herbal medicines and natural products and investigated their relevance to possible PD treatment. The results showed that the reviewed herbal medicines and natural products are effective against lysosomal disorder, mitochondrial dysfunction, and inflammation, key mechanisms underlying PD. Therefore, natural products and herbal medicines can reduce neurotoxicity and might improve both motor and non-motor symptoms associated with PD. Furthermore, these products, with their multi-target effects, enhance bioavailability, inhibit antibiotic resistance, and might additionally eliminate side effects, making them good alternative therapies for PD treatment.
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Affiliation(s)
- Yu-Jin So
- College of Korean Medicine, Woosuk University, Jeonju-si 54986, Jeollabuk-do, Republic of Korea; (Y.-J.S.); (J.-U.L.); (G.-S.Y.); (G.Y.); (S.-W.K.)
| | - Jae-Ung Lee
- College of Korean Medicine, Woosuk University, Jeonju-si 54986, Jeollabuk-do, Republic of Korea; (Y.-J.S.); (J.-U.L.); (G.-S.Y.); (G.Y.); (S.-W.K.)
| | - Ga-Seung Yang
- College of Korean Medicine, Woosuk University, Jeonju-si 54986, Jeollabuk-do, Republic of Korea; (Y.-J.S.); (J.-U.L.); (G.-S.Y.); (G.Y.); (S.-W.K.)
| | - Gabsik Yang
- College of Korean Medicine, Woosuk University, Jeonju-si 54986, Jeollabuk-do, Republic of Korea; (Y.-J.S.); (J.-U.L.); (G.-S.Y.); (G.Y.); (S.-W.K.)
| | - Sung-Wook Kim
- College of Korean Medicine, Woosuk University, Jeonju-si 54986, Jeollabuk-do, Republic of Korea; (Y.-J.S.); (J.-U.L.); (G.-S.Y.); (G.Y.); (S.-W.K.)
| | - Jun-Ho Lee
- College of Korean Medicine, Woosuk University, Jeonju-si 54986, Jeollabuk-do, Republic of Korea; (Y.-J.S.); (J.-U.L.); (G.-S.Y.); (G.Y.); (S.-W.K.)
- Da CaPo Co., Ltd., 303 Cheonjam-ro, Wansan-gu, Jeonju-si 55069, Jeollabuk-do, Republic of Korea
| | - Jong-Uk Kim
- College of Korean Medicine, Woosuk University, Jeonju-si 54986, Jeollabuk-do, Republic of Korea; (Y.-J.S.); (J.-U.L.); (G.-S.Y.); (G.Y.); (S.-W.K.)
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Kim JW, Geum JH, Ha WB, Woo HJ, Han YH, Park SH, Lee JH. The efficacy, effectiveness, and safety of Kyung-ok-ko: A narrative review. Medicine (Baltimore) 2022; 101:e31311. [PMID: 36397335 PMCID: PMC9666190 DOI: 10.1097/md.0000000000031311] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Kyung-ok-ko (KOK), a traditional medicinal formula in East Asia, has been recently studied across various fields. However, comprehensive reviews of clinical applications of KOK targeting clinical and experimental studies are lacking. Therefore, the application of KOK is being limited to the range of tonic medicines. To overcome this limitation, we aim to investigate the effectiveness, mechanism, and safety of KOK to obtain evidence regarding its effects in clinical applications. We searched for clinical and experimental articles in 11 databases (PubMed, Cochrane Library, Excerpta Medica dataBASE, China National Knowledge Infrastructure, Google Scholar, Research Information Sharing Service, Oriental Medicine Advanced Searching Integrated System, Koreanstudies Information Service System, Korean Medical Database, DBpia, and ScienceON). We selected 54 studies based on the inclusion criteria. Three clinical studies used KOK for a consumptive disease and health promotion. Fifty-one experimental studies reported the antioxidant activity, neuroprotective activity, anticancer effect, anti-inflammatory activity, immunological activity, growth promotion, impacts on cardiovascular system diseases, gastrointestinal system diseases, respiratory system diseases, and metabolic bone disease, hepatoprotective function, and antifatigue function of KOK, which were considered effective and safe in consumptive, chronic, metabolic, inflammatory, and immune diseases. We identified the effectiveness of KOK in the treatment of a wide range of diseases. However, further clinical studies are warranted in the future.
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Affiliation(s)
- Ji-Woo Kim
- Chuna Manual Medicine Research Group, College of Korean Medicine, Won-Kwang University, Iksan, Republic of Korea
| | - Ji-Hye Geum
- Chuna Manual Medicine Research Group, College of Korean Medicine, Won-Kwang University, Iksan, Republic of Korea
- Department of Rehabilitation Medicine of Korean Medicine, Iksan-Jeil Korean Medicine Hospital, Iksan, Republic of Korea
- Department of Korean Medicine Rehabilitation, College of Korean Medicine, Won-Kwang University, Iksan, Republic of Korea
| | - Won-Bae Ha
- Chuna Manual Medicine Research Group, College of Korean Medicine, Won-Kwang University, Iksan, Republic of Korea
- Department of Korean Medicine Rehabilitation, College of Korean Medicine, Won-Kwang University, Iksan, Republic of Korea
| | - Hyeon-Jun Woo
- Chuna Manual Medicine Research Group, College of Korean Medicine, Won-Kwang University, Iksan, Republic of Korea
- Department of Korean Medicine Rehabilitation, College of Korean Medicine, Won-Kwang University, Iksan, Republic of Korea
| | - Yun-Hee Han
- Chuna Manual Medicine Research Group, College of Korean Medicine, Won-Kwang University, Iksan, Republic of Korea
- Department of Korean Medicine Rehabilitation, College of Korean Medicine, Won-Kwang University, Iksan, Republic of Korea
| | - Shin-Hyeok Park
- Chuna Manual Medicine Research Group, College of Korean Medicine, Won-Kwang University, Iksan, Republic of Korea
- Department of Acupuncture and Moxibustion Medicine, College of Korean Medicine, Won-Kwang University, Iksan, Republic of Korea
| | - Jung-Han Lee
- Chuna Manual Medicine Research Group, College of Korean Medicine, Won-Kwang University, Iksan, Republic of Korea
- Department of Korean Medicine Rehabilitation, College of Korean Medicine, Won-Kwang University, Iksan, Republic of Korea
- Research Center of Traditional Korean Medicine, College of Korean Medicine, Won-Kwang University, Iksan, Republic of Korea
- *Correspondence: Jung-Han Lee, Department of Korean Medicine Rehabilitation, College of Korean Medicine, Won-Kwang University, 895 Muwang-ro, Iksan, Jeollabuk-do 54538, Republic of Korea (e-mail: )
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Mao Z, Gao M, Zhao X, Li L, Peng J. Neuroprotective Effect of Dioscin against Parkinson’s Disease via Adjusting Dual-Specificity phosphatase 6(DUSP6)-Mediated Oxidative Stress. Molecules 2022; 27:molecules27103151. [PMID: 35630630 PMCID: PMC9146847 DOI: 10.3390/molecules27103151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Revised: 05/06/2022] [Accepted: 05/10/2022] [Indexed: 12/10/2022] Open
Abstract
Exploration of lead compounds against Parkinson’s disease (PD), a neurodegenerative disease, is of great important. Dioscin, a bioactive natural product, shows various pharmacological effects. However, the activities and mechanisms of dioscin against PD have not been well investigated. In this study, the tests on 6-hydroxydopamine (6-OHDA)-induced PC12 cells and rats were carried out. The results showed that dioscin dramatically improved cell viability, decreased reactive oxygen species (ROS) levels, improved motor behavior and tyrosine hydroxylase(TH) levels and restored the levels of glutathione (GSH) and malondialdehyde (MDA) in rats. Mechanism investigation showed that dioscin not only markedly increased the expression level of dual- specificity phosphatase 6 (DUSP6) by 1.87-fold in cells and 2.56-fold in rats, and decreased phospho-extracellular regulated protein kinases (p-ERK) level by 2.12-fold in cells and 2.34-fold in rats, but also increased the levels of nuclear factor erythroid2-related factor 2 (Nrf2), hemeoxygenase-1 (HO-1), superoxide dismutase (SOD) and decreased the levels of kelch-1ike ECH-associated protein l (Keap1) in vitro and in vivo. Furthermore, DUSP6 siRNA transfection experiment in PC12 cells validated the protective effects of dioscin against PD via regulating DUSP6 to adjust the Keap1/Nrf2 pathway. Our data supported that dioscin has protection against PD in regulating oxidative stress via DUSP6 signal, which should be considered as an efficient candidate for the treatment of PD in the future.
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Affiliation(s)
- Zhang Mao
- College of Pharmacy, Dalian Medical University, Western 9 Lvshunnan Road, Dalian 116044, China; (Z.M.); (M.G.); (X.Z.)
- College of Intergrative Medicine, Dalian Medical University, Western 9 Lvshunnan Road, Dalian 116044, China
| | - Meng Gao
- College of Pharmacy, Dalian Medical University, Western 9 Lvshunnan Road, Dalian 116044, China; (Z.M.); (M.G.); (X.Z.)
| | - Xuerong Zhao
- College of Pharmacy, Dalian Medical University, Western 9 Lvshunnan Road, Dalian 116044, China; (Z.M.); (M.G.); (X.Z.)
| | - Lili Li
- Department of Pharmacy, Anhui University of Chinese Medicine, Hefei 230012, China
- Correspondence: (L.L.); or (J.P.); Tel.: +86-411-8611-0411
| | - Jinyong Peng
- College of Pharmacy, Dalian Medical University, Western 9 Lvshunnan Road, Dalian 116044, China; (Z.M.); (M.G.); (X.Z.)
- Department of Pharmacy, Anhui University of Chinese Medicine, Hefei 230012, China
- Correspondence: (L.L.); or (J.P.); Tel.: +86-411-8611-0411
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Zhou Q, Xu H, Zhao Y, Liu B, Cheng KW, Chen F, Wang M. 6-C-(E-Phenylethenyl)-naringenin, a Styryl Flavonoid, Inhibits Advanced Glycation End Product-Induced Inflammation by Upregulation of Nrf2. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:3842-3851. [PMID: 35297642 DOI: 10.1021/acs.jafc.2c00163] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Styryl flavonoids can be formed during the thermal processing of meats and flavonoid-enriched foods, showing high potentials in the prevention of different diseases. In this study, the protective effects of several styryl flavonoids against advanced glycation end product (AGE)-induced inflammation were evaluated, with 6-C-(E-phenylethenyl)-naringenin (6-PN) showing the strongest activity among them. The results indicated that 6-PN significantly ameliorated AGE-induced damages in human umbilical vein endothelial cells, including inhibition of pro-inflammatory cytokines and reactive oxygen species (ROS) production through downregulating the protein levels of the receptor for AGEs (RAGE) and NADPH oxidase. Notably, 6-PN possessed a much higher bioavailability than its parental compound, naringenin. Furthermore, 6-PN also promoted the activation of the nuclear factor erythroid 2-related factor 2 (Nrf2) signaling pathway that was suppressed by AGEs, and the anti-inflammatory effects of 6-PN disappeared when the cells were treated with ML385, a Nrf2 inhibitor. Hence, 6-PN might inhibit AGE-induced inflammation by the RAGE/ROS/Nrf2 signaling pathway.
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Affiliation(s)
- Qian Zhou
- Shenzhen Key Laboratory of Marine Microbiome Engineering, Institute for Advanced Study, Shenzhen University, Shenzhen 518060, P. R. China
- Institute for Innovative Development of Food Industry, Shenzhen University, Shenzhen 518060, P. R. China
| | - Hui Xu
- Shenzhen Key Laboratory of Marine Microbiome Engineering, Institute for Advanced Study, Shenzhen University, Shenzhen 518060, P. R. China
- Institute for Innovative Development of Food Industry, Shenzhen University, Shenzhen 518060, P. R. China
| | - Yueliang Zhao
- College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, P. R. China
| | - Bin Liu
- Shenzhen Key Laboratory of Marine Microbiome Engineering, Institute for Advanced Study, Shenzhen University, Shenzhen 518060, P. R. China
- Institute for Innovative Development of Food Industry, Shenzhen University, Shenzhen 518060, P. R. China
| | - Ka-Wing Cheng
- Shenzhen Key Laboratory of Marine Microbiome Engineering, Institute for Advanced Study, Shenzhen University, Shenzhen 518060, P. R. China
- Institute for Innovative Development of Food Industry, Shenzhen University, Shenzhen 518060, P. R. China
| | - Feng Chen
- Shenzhen Key Laboratory of Marine Microbiome Engineering, Institute for Advanced Study, Shenzhen University, Shenzhen 518060, P. R. China
- Institute for Innovative Development of Food Industry, Shenzhen University, Shenzhen 518060, P. R. China
| | - Mingfu Wang
- Shenzhen Key Laboratory of Marine Microbiome Engineering, Institute for Advanced Study, Shenzhen University, Shenzhen 518060, P. R. China
- Institute for Innovative Development of Food Industry, Shenzhen University, Shenzhen 518060, P. R. China
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Li X, Gao D, Paudel YN, Li X, Zheng M, Liu G, Ma Y, Chu L, He F, Jin M. Anti-Parkinson's Disease Activity of Sanghuangprous vaninii Extracts in the MPTP-Induced Zebrafish Model. ACS Chem Neurosci 2022; 13:330-339. [PMID: 35044760 DOI: 10.1021/acschemneuro.1c00656] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Parkinson's disease (PD) is a devastating disease of the central nervous system that occurs mainly in the elderly age group, affecting their quality of life. The PD pathogenesis is not yet fully understood and lacks the disease-modifying treatment strategies. Sanghuangprous vaninii (S. vaninii) is a perennial fungus with a plethora of pharmacological activities including anti-cancer and antioxidant activity and so on. However, no study till date has reported its neuroprotective effect against symptoms that are similar to PD in pre-clinical investigation. In the current study, we investigated anti-PD-like effects of S. vaninii mycelium extracts (SvMEs) on MPTP-induced PD in zebrafish. We observed that the loss of dopaminergic neurons and neurovascular reduction were reversed by using SvMEs in the zebrafish brain in a concentration-independent manner. Moreover, it also relieved locomotor impairments in MPTP-induced PD zebrafish. In addition, SvMEs exerted significant antioxidant activity in vitro, which was also demonstrated in vivo on ktr4:NTR-hKikGR zebrafish. Upon investigating the underlying mechanism, we found that SvMEs may alleviate oxidant stress and accelerate α-synuclein degradation and then alleviate PD-like symptoms. Antioxidant-related genes (sod1, gss, gpx4a, gclm, and cat) implied that the SvMEs exhibited anti-PD activity due to the antioxidation mechanism. Finally, upon analysis of chemical composition of SvMEs by liquid chromatography-mass spectrometry, we identified 10 compounds that are plausibly responsible for the anti-PD-like effect of SvMEs. On the limiting part, the finding of the study would have been more robust had we investigated the protein expression of genes related to PD and oxidative stress and compared the effects of SvMEs with any standard anti-PD therapy. Despite this, our results indicated that SvMEs possess anti-PD effects, indicating SvMEs as a potential candidate that is worth exploring further in this avenue.
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Affiliation(s)
- Xuezhen Li
- Jinan Fruit Research Institute, All-China Federation of Supply & Marketing Co-operatives, 16001 East Jingshi Road, Ji’nan, 250220 Shandong Province, People’s Republic of China
- Biology Institute, Qilu University of Technology (Shandong Academy of Sciences), 28789 East Jingshi Road, Ji’nan, 250103 Shandong Province, People’s Republic of China
- Jilin Agricultural University, 2888 Xincheng Road, Changchun, 130118 Jilin Province, People’s Republic of China
| | - Daili Gao
- Biology Institute, Qilu University of Technology (Shandong Academy of Sciences), 28789 East Jingshi Road, Ji’nan, 250103 Shandong Province, People’s Republic of China
| | - Yam Nath Paudel
- Neuropharmacology Research Strength, Jeffrey Cheah School of Medicine and Health Sciences, Monash University Malaysia, Bandar Sunway, 47500 Selangor, Malaysia
| | - Xia Li
- Mills Institute for Personalized Cancer Care, Fynn Biotechnologies Ltd., Gangxing 3rd Rd, High-Tech and Innovation Zone, Bldg. 2, Rm. 2201, Ji’nan, 250101 Shandong Province, P.R. China
| | - Mingzhu Zheng
- Jilin Agricultural University, 2888 Xincheng Road, Changchun, 130118 Jilin Province, People’s Republic of China
| | - Guangpeng Liu
- Jinan Fruit Research Institute, All-China Federation of Supply & Marketing Co-operatives, 16001 East Jingshi Road, Ji’nan, 250220 Shandong Province, People’s Republic of China
| | - Yanrui Ma
- Jinan Fruit Research Institute, All-China Federation of Supply & Marketing Co-operatives, 16001 East Jingshi Road, Ji’nan, 250220 Shandong Province, People’s Republic of China
| | - Le Chu
- Jinan Fruit Research Institute, All-China Federation of Supply & Marketing Co-operatives, 16001 East Jingshi Road, Ji’nan, 250220 Shandong Province, People’s Republic of China
| | - Fatao He
- Jinan Fruit Research Institute, All-China Federation of Supply & Marketing Co-operatives, 16001 East Jingshi Road, Ji’nan, 250220 Shandong Province, People’s Republic of China
| | - Meng Jin
- Biology Institute, Qilu University of Technology (Shandong Academy of Sciences), 28789 East Jingshi Road, Ji’nan, 250103 Shandong Province, People’s Republic of China
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Wang Y, Gao L, Chen J, Li Q, Huo L, Wang Y, Wang H, Du J. Pharmacological Modulation of Nrf2/HO-1 Signaling Pathway as a Therapeutic Target of Parkinson's Disease. Front Pharmacol 2021; 12:757161. [PMID: 34887759 PMCID: PMC8650509 DOI: 10.3389/fphar.2021.757161] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Accepted: 10/21/2021] [Indexed: 12/19/2022] Open
Abstract
Parkinson’s disease (PD) is a complex neurodegenerative disorder featuring both motor and nonmotor symptoms associated with a progressive loss of dopaminergic neurons in the substantia nigra pars compacta. Oxidative stress (OS) has been implicated in the pathogenesis of PD. Genetic and environmental factors can produce OS, which has been implicated as a core contributor to the initiation and progression of PD through the degeneration of dopaminergic neurons. The transcription factor nuclear factor erythroid 2-related factor 2 (Nrf2) orchestrates activation of multiple protective genes, including heme oxygenase-1 (HO-1), which protects cells from OS. Nrf2 has also been shown to exert anti-inflammatory effects and modulate both mitochondrial function and biogenesis. Recently, a series of studies have reported that different bioactive compounds were shown to be able to activate Nrf2/antioxidant response element (ARE) and can ameliorate PD-associated neurotoxin, both in animal models and in tissue culture. In this review, we briefly overview the sources of OS and the association between OS and the pathogenesis of PD. Then, we provided a concise overview of Nrf2/ARE pathway and delineated the role played by activation of Nrf2/HO-1 in PD. At last, we expand our discussion to the neuroprotective effects of pharmacological modulation of Nrf2/HO-1 by bioactive compounds and the potential application of Nrf2 activators for the treatment of PD. This review suggests that pharmacological modulation of Nrf2/HO-1 signaling pathway by bioactive compounds is a therapeutic target of PD.
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Affiliation(s)
- Yumin Wang
- Department of Respiratory and Critical Care Medicine, Aerospace Center Hospital, Peking University Aerospace School of Clinical Medicine, Beijing, China
| | - Luyan Gao
- Department of Neurology, Tianjin Fourth Central Hospital, The Fourth Central Hospital Affiliated to Nankai University, The Fourth Central Clinical College, Tianjin Medical University, Tianjin, China
| | - Jichao Chen
- Department of Respiratory and Critical Care Medicine, Aerospace Center Hospital, Peking University Aerospace School of Clinical Medicine, Beijing, China
| | - Qiang Li
- Department of Neurology, The Affiliated Hospital of Chifeng University, Chifeng, China
| | - Liang Huo
- Department of Pediatric Neurology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Yanchao Wang
- Department of Neurology, The Affiliated Hospital of Chifeng University, Chifeng, China
| | - Hongquan Wang
- Department of Neurology, Aerospace Center Hospital, Peking University Aerospace School of Clinical Medicine, Beijing, China
| | - Jichen Du
- Department of Neurology, Aerospace Center Hospital, Peking University Aerospace School of Clinical Medicine, Beijing, China
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Singh S, Nagalakshmi D, Sharma KK, Ravichandiran V. Natural antioxidants for neuroinflammatory disorders and possible involvement of Nrf2 pathway: A review. Heliyon 2021; 7:e06216. [PMID: 33659743 PMCID: PMC7890213 DOI: 10.1016/j.heliyon.2021.e06216] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Revised: 05/21/2020] [Accepted: 02/04/2021] [Indexed: 12/12/2022] Open
Abstract
The transcription factor Nrf2 (nuclear factor-erythroid 2 p45-related factor 2) play a crucial role in cellular redox and metabolic system. Activation of Nrf2 may be an effective therapeutic approach for neuroinflammatory disorders, through activation of antioxidant defences system, lower the inflammation, line up the mitochondrial function, and balancing of protein homeostasis. Various recent studies revealed that many of active substance obtained from plants have been found to activate the Nrf2 and to exert neuroprotective effects in various experimental models, raising the possibility that activation of Nrf2 may be an effective therapeutic approaches for neuroinflammatory disorders. The objective of this review was to evaluate the neuroprotective property of natural substance against neuroinflammatory disorders by reviewing the studies done till today. The outcomes of various in vitro and in vivo examinations have shown that natural compounds producing neuroprotective effects in neuronal system via activation of Nrf2. Herein, we also reviewed the studies to understand the role of Nrf2 for curing CNS disorders. Here we can conclude, herbal/natural moieties having potency to fight and prevent from neuroinflammatory disorders due to their abilities to activate Nrf2 pathway.
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Affiliation(s)
- Sanjiv Singh
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research, Export Promotion Industrial Park (EPIP), Zandaha Road, Hajipur, Bihar, India
| | - Devarapati Nagalakshmi
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research, Export Promotion Industrial Park (EPIP), Zandaha Road, Hajipur, Bihar, India
| | - K K Sharma
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research, Export Promotion Industrial Park (EPIP), Zandaha Road, Hajipur, Bihar, India
| | - V Ravichandiran
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research, Export Promotion Industrial Park (EPIP), Zandaha Road, Hajipur, Bihar, India
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Liu QF, Park SW, Kim YM, Song SJ, Chin YW, Pak SC, Jeon S, Koo BS. Administration of Kyung-Ok-Ko reduces stress-induced depressive behaviors in mice through inhibition of inflammation pathway. JOURNAL OF ETHNOPHARMACOLOGY 2021; 265:113441. [PMID: 33027642 DOI: 10.1016/j.jep.2020.113441] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Revised: 09/24/2020] [Accepted: 09/29/2020] [Indexed: 06/11/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Kyung-Ok-Ko (KOK), a traditional medicinal formula composed of Rehmannia glutinosa (Gaertn.) DC, Poria cocos (Schw.) Wolf, Korean Red Panax ginseng C.A.Mey, and honey, has been used to treat amnesia and dementia. KOK has also been shown to ameliorate transient cerebral global ischemia-induced brain damage, but the antidepressant-like effect of KOK has not been examined. AIM OF THE STUDY This study examined the antidepressant-like effect of KOK in an immobilization-induced stress mouse and its mechanisms of action. MATERIALS AND METHODS The animals in the stress group were immobilized for two hours a day for two weeks. KOK at a dose of 1 g/kg/day was administered orally to the stressed mice for two weeks in advance of their immobilization. A forced swimming test was performed to analyze their depressive behaviors. To examine the anti-inflammatory or antioxidative effects of KOK, the murine macrophage cell line, RAW 264.7 cells and human neuroblastoma cell, SH-SY5Y cells, were treated with lipopolysaccharide (LPS) and hydrogen peroxide, respectively. RESULT The KOK extract showed no significant toxicity when the cells were treated with a KOK extract at 5, 10, 25, 50, and 100 μg/mL. The KOK ethanol extract reduced LPS-induced TNF-α production, inducible nitric oxide (iNOS) mRNA level, and the levels of MAPK and p38 phosphorylation in RAW 264.7 cells. KOK also suppressed H2O2-induced cell death and the production of reactive oxygen species (ROS) in SH-SY5Y cells. In the forced swimming test, KOK induced a decrease in immobility and an increase in climbing activity. Finally, the administration of KOK reversed the up-regulation of IkB-α phosphorylation in the stressed mouse cortex. CONCLUSION KOK might be useful for the treatment of depression caused by environmental and lifestyle-related stress.
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Affiliation(s)
- Quan Feng Liu
- Department of Oriental Neuropsychiatry, Graduate School of Oriental Medicine, Dongguk University, 814 Siksa-dong, Goyang-si, Gyeonggi-do, 10326, Republic of Korea
| | - Sun-Woo Park
- Yaksan Korean Medical Clinic 302, Dongyang-plaza 533-3, Yatap-dong, Bundang-gu, Seongnam-si, Gyeonggi-do, South Korea
| | - Young-Mi Kim
- College of Pharmacy, Seoul National University, Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
| | - Sue-Jin Song
- Department of Oriental Neuropsychiatry, Graduate School of Oriental Medicine, Dongguk University, 814 Siksa-dong, Goyang-si, Gyeonggi-do, 10326, Republic of Korea
| | - Young-Won Chin
- College of Pharmacy, Seoul National University, Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
| | - Sok Cheon Pak
- School of Biomedical Sciences, Charles Sturt University, Bathurst, NSW, 2795, Australia
| | - Songhee Jeon
- Department of Biomedical Sciences, Center for Creative Biomedical Scientists at Chonnam National University, Gwangju, 61469, Republic of Korea.
| | - Byung-Soo Koo
- Department of Oriental Neuropsychiatry, Graduate School of Oriental Medicine, Dongguk University, 814 Siksa-dong, Goyang-si, Gyeonggi-do, 10326, Republic of Korea; Department of Korean Neuropsychiatry, Dongguk University Ilsan Hospital, 32, Dongguk-lo, Ilsandong-gu, Goyang, Gyeonggi-do, 10326, Republic of Korea.
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Mohamed SA, El-Kashef DH, Nader MA. Tiron alleviates MPTP-induced Parkinsonism in mice via activation of Keap-1/Nrf2 pathway. J Biochem Mol Toxicol 2020; 35:e22685. [PMID: 33368846 DOI: 10.1002/jbt.22685] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2020] [Revised: 11/20/2020] [Accepted: 11/25/2020] [Indexed: 01/21/2023]
Abstract
Parkinsonism is a neurodegenerative disease that is common all over the world. This study aimed at exploring the neuroprotective effect of tiron against 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP)-induced Parkinsonism. MPTP (30 mg/kg, intraperitoneally [ip]) was injected in mice daily for 5 consecutive days. Mice were treated with tiron (140 and 280 mg/kg, ip) or levodopa (8.4 mg/kg, orally) for 10 consecutive days starting 5 days before MPTP injection. At the end of the experiment, behavioral tests were conducted to assess the neuroprotective effect of tiron. Moreover, oxidative stress was assessed via measuring antioxidant enzyme, such as catalase, and lipid peroxidation was evaluated as malondialdehyde. Neuronal damage was also detected by histopathological examination and via estimating hippocampal levels of dopamine, γ-aminobutyric acid, and nuclear factor erythroid-derived 2-like 2. In addition, the expression of Kelch-like ECH-associated protein 1 and heme oxygenase-1 was assessed by immunohistochemistry. Compared with the blank control group and the positive control group, the inhibitory effect of tiron on MPTP-induced neurodegenerative injury was statistically significant.
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Affiliation(s)
- Shrook A Mohamed
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
| | - Dalia H El-Kashef
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
| | - Manar A Nader
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
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Song XY, Guo R, Qi XL, Han FY, Lin B, Huang XX, Yao GD, Song SJ. Terpenoids from stigma maydis (Zea mays L.) alleviate hydrogen peroxide-induced SH-SY5Y cell injury by activating Nrf2. Bioorg Chem 2020; 102:104131. [PMID: 32738569 DOI: 10.1016/j.bioorg.2020.104131] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Revised: 07/13/2020] [Accepted: 07/18/2020] [Indexed: 12/20/2022]
Abstract
Five terpenoids (1-5), including three new ent-kaurane diterpenoids (1-3), one new ent-rosane type diterpenoid (4) and one known triterpenoid (5), were isolated from stigma maydis (Zea mays L.). The structures of the compounds were elucidated by comprehensive spectroscopic analyses. The relative configurations of stigmanes A-D (1-4) were determined by NOESY experiments. In addition, the relative configuration of stigmane D (4) was further established by NMR calculations. The absolute configurations of these compounds were identified by a comparison of experimental and calculated specific rotations. The neuroprotective effects of these compounds against H2O2-induced injury in human neuroblastoma SH-SY5Y cells were evaluated, and the results showed that among the compounds, 2 exhibited the most significant neuroprotection. Further study demonstrated that 2 could activate nuclear factor E2-related factor (Nrf2), downregulate apoptosis and reactive oxygen species (ROS) generation, and increase antioxidant enzyme activities in SH-SY5Y cells. However, the neuroprotective effect was reversed when Nrf2 was silenced. In conclusion, this study suggested that terpenoids from stigma maydis exerted neuroprotective effects through Nrf2 activation.
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Affiliation(s)
- Xiao-Yu Song
- Key Laboratory of Computational Chemistry-Based Natural Antitumor Drug Research & Development, Liaoning Province, School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang 110016, People's Republic of China
| | - Rui Guo
- Key Laboratory of Computational Chemistry-Based Natural Antitumor Drug Research & Development, Liaoning Province, School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang 110016, People's Republic of China
| | - Xiao-Li Qi
- Key Laboratory of Computational Chemistry-Based Natural Antitumor Drug Research & Development, Liaoning Province, School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang 110016, People's Republic of China
| | - Feng-Ying Han
- Key Laboratory of Computational Chemistry-Based Natural Antitumor Drug Research & Development, Liaoning Province, School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang 110016, People's Republic of China
| | - Bin Lin
- School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, Shenyang 110016, People's Republic of China
| | - Xiao-Xiao Huang
- Key Laboratory of Computational Chemistry-Based Natural Antitumor Drug Research & Development, Liaoning Province, School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang 110016, People's Republic of China.
| | - Guo-Dong Yao
- Key Laboratory of Computational Chemistry-Based Natural Antitumor Drug Research & Development, Liaoning Province, School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang 110016, People's Republic of China.
| | - Shao-Jiang Song
- Key Laboratory of Computational Chemistry-Based Natural Antitumor Drug Research & Development, Liaoning Province, School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang 110016, People's Republic of China.
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NF-κB-Mediated Neuroinflammation in Parkinson's Disease and Potential Therapeutic Effect of Polyphenols. Neurotox Res 2019; 37:491-507. [PMID: 31823227 DOI: 10.1007/s12640-019-00147-2] [Citation(s) in RCA: 118] [Impact Index Per Article: 23.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2019] [Revised: 11/26/2019] [Accepted: 11/29/2019] [Indexed: 02/06/2023]
Abstract
Different animal and human studies from last two decades in the case of Parkinson's disease (PD) have concentrated on oxidative stress due to increased inflammation and cytokine-dependent neurotoxicity leading to induction of dopaminergic (DA) degeneration pathway in the nigrostriatal region. Chronic inflammation, the principle hallmark of PD, forms the basis of neurodegeneration. Aging in association with activation of glia due to neuronal injury, perhaps because of immune alterations and genetic predispositions, leads to deregulation of inflammatory pathways premising the onset of PD. A family of inducible transcription factors, nuclear factor-κB (NF-κB), is found to show expression in various cells and tissues, such as microglia, neurons, and astrocytes which play an important role in activation and regulation of inflammatory intermediates during inflammation. Both canonical and non-canonical NF-κB pathways are involved in the regulation of the stimulated cells. During the prodromal/asymptomatic stage of age-associated neurodegenerative diseases (i.e., PD and AD), chronic neuroinflammation may act silently as the driver of neuronal dysfunction. Though research has provided an insight over age-related neurodegeneration in PD, elaborative role of NF-κB in neuroinflammation is yet to be completely understood and thus requires more investigation. Polyphenols, a group of naturally occurring compound in medicinal plants, have gained attention because of their anti-oxidative and anti-neuroinflammatory properties in neurodegenerative diseases. In this aspect, this review highlights the role of NF-κB and the possible therapeutic roles of polyphenols in NF-κB-mediated neuroinflammation in PD.
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Xian P, Hei Y, Wang R, Wang T, Yang J, Li J, Di Z, Liu Z, Baskys A, Liu W, Wu S, Long Q. Mesenchymal stem cell-derived exosomes as a nanotherapeutic agent for amelioration of inflammation-induced astrocyte alterations in mice. Am J Cancer Res 2019; 9:5956-5975. [PMID: 31534531 PMCID: PMC6735367 DOI: 10.7150/thno.33872] [Citation(s) in RCA: 191] [Impact Index Per Article: 38.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2019] [Accepted: 07/24/2019] [Indexed: 01/02/2023] Open
Abstract
Mesenchymal stem cell-derived exosomes (MSC-Exo) have robust anti-inflammatory effects in the treatment of neurological diseases such as epilepsy, stroke, or traumatic brain injury. While astrocytes are thought to be mediators of these effects, their precise role remains poorly understood. To address this issue, we investigated the putative therapeutic effects and mechanism of MSC-Exo on inflammation-induced alterations in astrocytes. Methods: Lipopolysaccharide (LPS)-stimulated hippocampal astrocytes in primary culture were treated with MSC-Exo, which were also administered in pilocarpine-induced status epilepticus (SE) mice. Exosomal integration, reactive astrogliosis, inflammatory responses, calcium signaling, and mitochondrial membrane potentials (MMP) were monitored. To experimentally probe the molecular mechanism of MSC-Exo actions on the inflammation-induced astrocytic activation, we inhibited the nuclear factor erythroid-derived 2, like 2 (Nrf2, a key mediator in neuroinflammation and oxidative stress) by sgRNA (in vitro) or ML385 (Nrf2 inhibitor) in vivo. Results: MSC-Exo were incorporated into hippocampal astrocytes as well as attenuated reactive astrogliosis and inflammatory responses in vitro and in vivo. Also, MSC-Exo ameliorated LPS-induced aberrant calcium signaling and mitochondrial dysfunction in culture, and SE-induced learning and memory impairments in mice. Furthermore, the putative therapeutic effects of MSC-Exo on inflammation-induced astrocytic activation (e.g., reduced reactive astrogliosis, NF-κB deactivation) were weakened by Nrf2 inhibition. Conclusions: Our results show that MSC-Exo ameliorate inflammation-induced astrocyte alterations and that the Nrf2-NF-κB signaling pathway is involved in regulating astrocyte activation in mice. These data suggest the promising potential of MSC-Exo as a nanotherapeutic agent for the treatment of neurological diseases with hippocampal astrocyte alterations.
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