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Lee MM, Cho WK, Cha MH, Yim NH, Yang HJ, Ma JY. The antiviral activity of Thuja orientalis folium against Influenza A virus. Virus Res 2023; 335:199199. [PMID: 37582473 PMCID: PMC10445455 DOI: 10.1016/j.virusres.2023.199199] [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: 06/01/2023] [Revised: 08/01/2023] [Accepted: 08/12/2023] [Indexed: 08/17/2023]
Abstract
Thuja orientalis Folium (TOF) has been prescribed traditionally as an expectorant for inflammatory airway disease. In this study, we evaluated the anti-influenza A virus (IAV) activity of TOF by detecting GFP expressed by influenza A virus (A/PR/8/34-GFP) infection. The fluorescence microscopy and fluorescence-activated cell sorting analysis showed that TOF potently inhibited IAV infection, dose-dependently. Consistently, immunofluorescence and Q-PCR analysis results confirmed TOF significantly represses IAV protein and RNA expression. TOF inhibited IAV infection at the binding and entry step upon viral infection and interferes with HA protein. Further, TOF exhibited a virucidal effect and inhibited the neuraminidase activity of IAV. Additionally, TOF prevented the cytopathic effect caused by H1N1 and H3N2 IAV infection. Amentoflavone among the constituents in TOF exerted the strongest anti-IAV effect. Myricetin, quercetin, and quercitrin also inhibited IAV infection. However, the potent anti-IAV effect of TOF may be related to the synergistic effect of constituents, not by a single specific compound. Our results suggest TOF exhibits a significant inhibitory effect against IAV infection at multi-stages via the blockage of viral attachment and entry, inhibition of neuraminidase, and induction of virucidal effects.
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Affiliation(s)
- Myong-Min Lee
- Korean Medicine (KM) Application Center, Korea Institute of Oriental Medicine (KIOM), 70 Cheomdan-ro, Dong-gu, Daegu, 41062 Republic of Korea
| | - Won-Kyung Cho
- Korean Medicine (KM) Application Center, Korea Institute of Oriental Medicine (KIOM), 70 Cheomdan-ro, Dong-gu, Daegu, 41062 Republic of Korea.
| | - Min Ho Cha
- Korean Medicine (KM) Application Center, Korea Institute of Oriental Medicine (KIOM), 70 Cheomdan-ro, Dong-gu, Daegu, 41062 Republic of Korea
| | - Nam-Hui Yim
- Korean Medicine (KM) Application Center, Korea Institute of Oriental Medicine (KIOM), 70 Cheomdan-ro, Dong-gu, Daegu, 41062 Republic of Korea
| | - Hye Jin Yang
- Korean Medicine (KM) Application Center, Korea Institute of Oriental Medicine (KIOM), 70 Cheomdan-ro, Dong-gu, Daegu, 41062 Republic of Korea
| | - Jin Yeul Ma
- Korean Medicine (KM) Application Center, Korea Institute of Oriental Medicine (KIOM), 70 Cheomdan-ro, Dong-gu, Daegu, 41062 Republic of Korea.
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Shao J, Liu X, Lian M, Mao Y. Citronellol Prevents 6-OHDA-Induced Oxidative Stress, Mitochondrial Dysfunction, and Apoptosis in Parkinson Disease Model of SH-SY5Y Cells via Modulating ROS-NO, MAPK/ERK, and PI3K/Akt Signaling Pathways. Neurotox Res 2022; 40:2221-2237. [PMID: 36097250 DOI: 10.1007/s12640-022-00558-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Revised: 07/13/2022] [Accepted: 08/09/2022] [Indexed: 12/31/2022]
Abstract
Parkinson disease is a neurodegenerative disorder distinguished by dopaminergic shortage in the striatum and the accumulation of α-synuclein neuronal aggregates in the brains of patients. Since, there is no accurate treatment available for Parkinson disease, researches are designed to alleviate the pathognomonic symptoms such as neuroinflammation, oxidative stress, mitochondrial dysfunction, and apoptosis. Accordingly, a number of compounds have been reported to inhibit these pathognomonic symptoms. In this study, we have assessed the neuroprotective potential of citronellol against 6-OHDA-induced neurotoxicity in SH-SY5Y cells. The results found that citronellol treatment effectively hindered the cell death caused by 6-OHDA and thereby maintaining the cell viability in SH-SY5Y cells at 50 µg/mL concentration. As expected, the citronellol treatment significantly reduced the 6-OHDA-induced secretion of inflammatory factors (IL-1β, IL-6, and TNF-α), which was obtained through ELISA technique. Similarly, citronellol hindered the 6-OHDA-induced oxidative stress by lowering the intracellular ROS and NO level and MDA leakage along with increased expression of SOD level in SH-SY5Y cells. The JC-1 staining showed that 6-OHDA increased the number of green fluorescent dots with ruptured mitochondrial membrane potential, while citronellol increased the amount of red fluorescent, showing the rescue potential against the 6-OHDA-induced mitochondrial dysfunction. Furthermore, citronellol hampered the 6-OHDA-induced apoptosis via the suppression of Bcl-2/Bax pathway. The western blotting results hypothesized that citronellol rescued SH-SY5Y cells from 6-OHDA-induced neurotoxicity via modulating ROS-NO, MAPK/ERK, and PI3K/Akt signaling pathways. However, further clinical trials are required to verify the anti-Parkinson efficacy.
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Affiliation(s)
- Jiahui Shao
- Department of Neurology, The First People's Hospital of Wenling, Zhejiang Province, Wenling, 317500, China
| | - Xuan Liu
- Department of Neurology, The First People's Hospital of Wenling, Zhejiang Province, Wenling, 317500, China
| | - Mengjia Lian
- Department of Neurology, The First People's Hospital of Wenling, Zhejiang Province, Wenling, 317500, China
| | - Youbing Mao
- Department of Special Inspection Section, The First People's Hospital of Wenling, No. 333, Chuanan South Road, Chengxi StreetZhejiang Province, Wenling, 317500, China.
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A review: traditional herbs and remedies impacting pathogenesis of Parkinson's disease. Naunyn Schmiedebergs Arch Pharmacol 2022; 395:495-513. [PMID: 35258640 DOI: 10.1007/s00210-022-02223-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Accepted: 02/15/2022] [Indexed: 12/27/2022]
Abstract
Parkinson's disease (PD) is characterized by progressive degeneration of dopaminergic neurons, leading to misbalance and loss of coordination. Current therapies are claimed only for symptomatic relief, on long-term use, which causes alteration in basal ganglia, and give rise to various adverse effects like dyskinesia and extra pyramidal side effects, which is reversed and proved to be attenuated with the help of various herbal approaches. Therefore, in order to attenuate the dopaminergic complications, focus of current research has been shifted from dopaminergic to non-dopaminergic strategies. Herbs and herbal remedies seems to be a better option to overcome the complications associated with current dopaminergic therapies. In recent years, various herbs and herbal remedies based on Ayurveda, traditional Chinese and Korean remedies, have become the target of various researches. These herbs and their bioactive compound are being extensively used to treat PD in India, China, Japan, and Korea. The major focus of this current review is to analyze preclinical studies with reference to various herbs, bioactive compounds, and traditional remedies for the management of Parkinson disorder, which will give an insight towards clinical trials.
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An alcoholic extract of Thuja orientalis L. leaves inhibits autophagy by specifically targeting pro-autophagy PIK3C3/VPS34 complex. Sci Rep 2021; 11:17712. [PMID: 34489486 PMCID: PMC8421415 DOI: 10.1038/s41598-021-97216-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Accepted: 08/18/2021] [Indexed: 12/13/2022] Open
Abstract
Autophagy is a lysosome-dependent degradation program to maintain cellular homeostasis in response to a variety of stressful conditions, such as long-lived or non-functional subcellular organelles, protein aggregates, nutrient limitation, and virus/bacteria infection. Accordingly, dysregulation of autophagy is closely associated with many human pathophysiological conditions, such as neurodegenerative diseases, aging, and cancer, and autophagy is highlighted as an important therapeutic target for these human diseases. In autophagy process, PIK3C3/VPS34 complex plays important roles in autophagosome biogenesis. Accumulating evidences that inhibition of PIK3C3/VPS34 complex successfully blocks autophagy make the complex as an attractive target for the development of autophagy-specific inhibitors. However, considering that various forms of PIK3C3/VPS34 complex exist and they are involved in many different cellular functions, the targeting of the pro-autophagy PIK3C3/VPS34 complex is required to specifically inhibit autophagy. To identify autophagy inhibitors targeting the pro-autophagy complex, we have performed the screening of a customized natural product library consisting of 35 herbal extracts which are widely used in the oriental medicine as anti-inflammation and/or anti-tumor reagents. We discovered that an alcoholic extract of Thuja orientalis L. leaves inhibits pro-autophagy complex formation by disrupting the interaction between autophagy-specific factor, ATG14L, and the complex core unit Vps34-Beclin 1 in vitro. Also, it inhibits the nutrient starvation induced autophagy and diminished pro-autophagy PIK3C3/VPS34 complex containing either ATG14L or UVRAG in several cell lines. Our results strongly suggest that Thuja orientalis L. leave extract functions as an autophagy-specific inhibitor not decreasing the complex activity nor the protein level, but preventing protein-protein interaction between autophagy-specific factor (ATG14L and UVRAG) and PIK3C3/VPS34 complex core unit, Vps34-Beclin 1, thereby specifically depleting the pro-autophagy complex to inhibit autophagy.
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Regulation of Actg1 and Gsta2 is possible mechanism by which capsaicin alleviates apoptosis in cell model of 6-OHDA-induced Parkinson's disease. Biosci Rep 2021; 40:225257. [PMID: 32537633 PMCID: PMC7317588 DOI: 10.1042/bsr20191796] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Revised: 06/05/2020] [Accepted: 06/08/2020] [Indexed: 02/08/2023] Open
Abstract
The present study aimed to identify the gene expression changes conferred by capsaicin in the cell model of 6-OHDA-induced Parkinson's disease, to disclose the molecular mechanism of action of capsaicin. We used capsaicin-treated and paraffin-embedded wax blocks containing substantia nigra tissue from 6-OHDA-induced Parkinson's disease rats to analyze transcriptional changes using Affymetrix GeneChip Whole Transcript Expression Arrays. A total of 108 genes were differentially expressed in response to capsaicin treatment, and seven of these genes were selected for further analysis: Olr724, COX1, Gsta2, Rab5a, Potef, Actg1, and Acadsb, of which Actg1 (actin gamma 1) was down-regulated and Gsta2 (Glutathione S-transferase alpha 2) was up-regulated. We successfully overexpressed Actg1 and Gsta2 in vitro. CCK-8 detection and flow cytometry demonstrated that overexpression of Actg1 and Gsta2 increased apoptosis in the 6-OHDA-induced Parkinson's disease cell model. The imbalance between Actg1 and Gsta2 may be one of the mechanisms of cell damage in Parkinson's disease (PD). Capsaicin can protect the cells and reduce the apoptosis rate by regulating Actg1 and Gsta2.
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Yu J, Guo M, Jiang W, Yang M, Pang X. Assessment of the Microbiome and Potential Aflatoxin Associated With the Medicinal Herb Platycladus orientalis. Front Microbiol 2020; 11:582679. [PMID: 33193220 PMCID: PMC7644961 DOI: 10.3389/fmicb.2020.582679] [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] [Received: 07/13/2020] [Accepted: 10/06/2020] [Indexed: 12/05/2022] Open
Abstract
Platycladi Semen, which is derived from the dried ripe seed of Platycladus orientalis, has been used for the treatment of insomnia and constipation in China for 2000 years. However, it is susceptible to fungal and aflatoxin contamination under proper humidity and temperature during storage. Although aflatoxin contamination in Platycladi Semen has been reported preliminarily, few studies have been conducted on fungal infection and aflatoxin contamination simultaneously. Thus, this work aims to provide an in-depth understanding of fungal contamination in Platycladi Semen, and information on aflatoxin contamination. We focused on a comparison of the difference in fungal diversity between aflatoxin-contaminated and aflatoxin-free Platycladi Semen samples. First, aflatoxin levels in 11 Platycladi Semen samples, which were collected from local herbal markets in Shandong, Anhui, and Hebei provinces throughout China, were determined by IAC-HPLC-FLD, and positive confirmation of detected samples was performed by LC-MS/MS. The samples were divided into two groups, based on production or non-production of aflatoxin. We then used the Illumina MiSeq PE250 platform, and targeted the internal transcribed spacer two sequences to analyze the diversity and composition of the fungal microbiome, as well as to assess the presence of potential mycotoxin-producing fungi. Results showed that five samples were contaminated with aflatoxins, one of which exceeded the legal limits of Chinese Pharmacopeia Commission (2015). At the phylum level, the Ascomycota was the most dominant in all tested samples, with a relative abundance of 83.04-99.46%. Aspergillus (27.88-97.28%), Xerochrysium (0-28.49%), and Xeromyces (0-22.24%) were the three predominant genera. Furthermore, differences in fungal composition between the aflatoxin-contaminated and aflatoxin-free groups, as well as between different provinces were observed. A total of 74 species were identified, and four potential mycotoxin-producing fungi were detected in all samples, namely Aspergillus flavus, Aspergillus fumigatus, Fusarium poae, and Penicillium steckii. In conclusion, we report the great diversity of fungi associated with Platycladi Semen, highlight the risk to consumers of ingesting potent aflatoxin, and provide a reference for the safe application and quality improvement of Platycladi Semen.
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Affiliation(s)
- Jingsheng Yu
- Key Lab of Chinese Medicine Resources Conservation, State Administration of Traditional Chinese Medicine of the People’s Republic of China, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
- Engineering Research Center of Chinese Medicine Resource, Ministry of Education, Beijing, China
| | - Mengyue Guo
- Key Lab of Chinese Medicine Resources Conservation, State Administration of Traditional Chinese Medicine of the People’s Republic of China, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
- Engineering Research Center of Chinese Medicine Resource, Ministry of Education, Beijing, China
| | - Wenjun Jiang
- Key Lab of Chinese Medicine Resources Conservation, State Administration of Traditional Chinese Medicine of the People’s Republic of China, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
- Engineering Research Center of Chinese Medicine Resource, Ministry of Education, Beijing, China
| | - Meihua Yang
- Key Lab of Chinese Medicine Resources Conservation, State Administration of Traditional Chinese Medicine of the People’s Republic of China, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Xiaohui Pang
- Key Lab of Chinese Medicine Resources Conservation, State Administration of Traditional Chinese Medicine of the People’s Republic of China, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
- Engineering Research Center of Chinese Medicine Resource, Ministry of Education, Beijing, China
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Ren J, Hou C, Shi C, Lin Z, Liao W, Yuan E. A polysaccharide isolated and purified from Platycladus orientalis (L.) Franco leaves, characterization, bioactivity and its regulation on macrophage polarization. Carbohydr Polym 2019; 213:276-285. [DOI: 10.1016/j.carbpol.2019.03.003] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Revised: 02/23/2019] [Accepted: 03/03/2019] [Indexed: 01/10/2023]
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8
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Shan CX, Guo SC, Yu S, Shan MQ, Li SFY, Chai C, Cui XB, Zhang L, Ding AW, Wu QN. Simultaneous Determination of Quercitrin, Afzelin, Amentoflavone, Hinokiflavone in Rat Plasma by UFLC–MS-MS and Its Application to the Pharmacokinetics of Platycladus orientalis Leaves Extract. J Chromatogr Sci 2018; 56:895-902. [DOI: 10.1093/chromsci/bmy066] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2017] [Accepted: 06/13/2018] [Indexed: 12/18/2022]
Abstract
Abstract
Leaves of Platycladus orientalis have been used as blood cooling and homeostatic therapy for thousands of years in traditional Chinese medicine. Emerging evidences of modern pharmacology have proved flavonoids as the key elements responsible for the efficacies. However, there has been no report on pharmacokinetic study of the flavonoids from Platycladus orientalis leaves extract. In this study, a sensitive and rapid ultra-flow liquid chromatography-tandem mass spectrometry method was established and validated for the simultaneous determination of amentoflavone, afzelin, hinokiflavone and quercitrin in rat plasma. The four flavonoids and luteolin (internal standard, IS) were recovered from rat plasma by methanol–ethyl acetate (v:v, 50:50). Chromatographic separation was performed on a C18 column with gradient elution. Our results showed that the recoveries from spiked control samples were more than 85% for all analytes and IS. The relative standard deviations of intra-day and inter-day precision were within 15% while the REs ranged from −6.6% to 8.0%. The validated method in this study was successfully applied to pharmacokinetic study in healthy rats after oral administration of P. orientalis leaves extract.
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Affiliation(s)
- Chen-xiao Shan
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, PR China
| | - Shu-chen Guo
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, PR China
| | - Sheng Yu
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, PR China
| | - Ming-qiu Shan
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, PR China
- Department of Chemistry, National University of Singapore, Singapore, Singapore
| | - Sam Fong Yau Li
- Department of Chemistry, National University of Singapore, Singapore, Singapore
| | - Chuan Chai
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, PR China
| | - Xiao-bing Cui
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, PR China
| | - Li Zhang
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, PR China
| | - An-wei Ding
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, PR China
| | - Qi-nan Wu
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, PR China
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Protective effects of a herbal extract combination of Bupleurum falcatum , Paeonia suffruticosa , and Angelica dahurica against MPTP-induced neurotoxicity via regulation of nuclear receptor-related 1 protein. Neuroscience 2017; 340:166-175. [DOI: 10.1016/j.neuroscience.2016.10.029] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2016] [Revised: 10/07/2016] [Accepted: 10/11/2016] [Indexed: 01/19/2023]
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10
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Lin Z, Liao W, Ren J. Physicochemical Characterization of a Polysaccharide Fraction from Platycladus orientalis (L.) Franco and Its Macrophage Immunomodulatory and Anti-Hepatitis B Virus Activities. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2016; 64:5813-5823. [PMID: 27345527 DOI: 10.1021/acs.jafc.6b01387] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
A polysaccharide fraction, here called POP1, was purified from the leaves of Platycladus orientalis (L.) Franco by water extraction and alcohol precipitation. Physicochemical characterization indicated that POP1 had a relative molecular weight of 8.10 × 10(3) Da and consisted of rhamnose (5.74%), arabinose (12.58%), mannose (10.97%), glucose (64.96%), and galactose (6.55%). The main linkage types of POP1 consisted of (1→5)-linked α-l-Ara, (1→3)-linked α-l-Man, (1→6)-linked β-l-Rha, (1→4)-linked α-d-Glc, (1→6)-linked α-d-Glc, (1→6)-linked β-d-Gal, (1→3,6)-linked β-d-Gal, and termination with α-l-Man and α-d-Glc residues based on periodate oxidation, Smith degradation, methylation, and NMR analysis. POP1 exhibited excellent immunostimulating activity by enhancing macrophage NO, TNF-α, IL-6, and IL-12 secretion and activating related mRNA expression. Besides, POP1 showed significant anti-HBV activity through inhibiting the expression of HBsAg (IC50 = 1.33 ± 0.12 mg/mL) and HBeAg (IC50 = 1.67 ± 0.13 mg/mL) and interfering with the HBV DNA replication (IC50 = 0.80 ± 0.03 mg/mL). The present study suggested that POP1 could be used as immunoregulatory agent in functional foods for the prevention of HBV infection.
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Affiliation(s)
- Zehua Lin
- School of Food Science and Engineering, South China University of Technology , Guangzhou, 510641, China
| | - Wenzhen Liao
- School of Food Science and Engineering, South China University of Technology , Guangzhou, 510641, China
- Institute of Food Safety and Nutrition, Jinan University , Guangzhou, 510632, China
| | - Jiaoyan Ren
- School of Food Science and Engineering, South China University of Technology , Guangzhou, 510641, China
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Sengupta T, Vinayagam J, Singh R, Jaisankar P, Mohanakumar KP. Plant-Derived Natural Products for Parkinson's Disease Therapy. ADVANCES IN NEUROBIOLOGY 2016; 12:415-96. [PMID: 27651267 DOI: 10.1007/978-3-319-28383-8_23] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Plant-derived natural products have made their own niche in the treatment of neurological diseases since time immemorial. Parkinson's disease (PD), the second most prevalent neurodegenerative disorder, has no cure and the treatment available currently is symptomatic. This chapter thoughtfully and objectively assesses the scientific basis that supports the increasing use of these plant-derived natural products for the treatment of this chronic and progressive disorder. Proper considerations are made on the chemical nature, sources, preclinical tests and their validity, and mechanisms of behavioural or biochemical recovery observed following treatment with various plants derived natural products relevant to PD therapy. The scientific basis underlying the neuroprotective effect of 6 Ayurvedic herbs/formulations, 12 Chinese medicinal herbs/formulations, 33 other plants, and 5 plant-derived molecules have been judiciously examined emphasizing behavioral, cellular, or biochemical aspects of neuroprotection observed in the cellular or animal models of the disease. The molecular mechanisms triggered by these natural products to promote cell survivability and to reduce the risk of cellular degeneration have also been brought to light in this study. The study helped to reveal certain limitations in the scenario: lack of preclinical studies in all cases barring two; heavy dependence on in vitro test systems; singular animal or cellular model to establish any therapeutic potential of drugs. This strongly warrants further studies so as to reproduce and confirm these reported effects. However, the current literature offers scientific credence to traditionally used plant-derived natural products for the treatment of PD.
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Affiliation(s)
- T Sengupta
- Division of Cell Biology & Physiology, Indian Institute of Chemical Biology (CSIR, Govt of India), 4, Raja S.C. Mullick Road, Jadavpur, Kolkata, 700 032, India
| | - J Vinayagam
- Division of Chemistry, Indian Institute of Chemical Biology (CSIR, Govt of India), 4, Raja S.C. Mullick Road, Kolkata, 700 032, India
| | - R Singh
- Division of Cell Biology & Physiology, Indian Institute of Chemical Biology (CSIR, Govt of India), 4, Raja S.C. Mullick Road, Jadavpur, Kolkata, 700 032, India
| | - P Jaisankar
- Division of Chemistry, Indian Institute of Chemical Biology (CSIR, Govt of India), 4, Raja S.C. Mullick Road, Kolkata, 700 032, India
| | - K P Mohanakumar
- Division of Cell Biology & Physiology, Indian Institute of Chemical Biology (CSIR, Govt of India), 4, Raja S.C. Mullick Road, Jadavpur, Kolkata, 700 032, India. .,Inter University Centre for Biomedical Research & Super Specialty Hospital, Mahatma Gandhi University Campus at Thalappady, Rubber Board PO, Kottayam, 686009, Kerala, India.
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12
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Kim HG, Oh MS. Protective Effect of Lycii Radicis Cortex against 6-Hydroxydopamine-Induced Dopaminergic Neuronal Cell Death. J Food Biochem 2015. [DOI: 10.1111/jfbc.12127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Hyo Geun Kim
- Department of Oriental Pharmaceutical Science; College of Pharmacy and Kyung Hee East-West Pharmaceutical Research Institute; Korea
| | - Myung Sook Oh
- Department of Oriental Pharmaceutical Science; College of Pharmacy and Kyung Hee East-West Pharmaceutical Research Institute; Korea
- Department of Life and Nanopharmaceutical Sciences; Kyung Hee University; #1 Hoegi-dong, Dongdaemun-gu Seoul 130-701 Korea
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13
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Neuroprotection of Dopaminergic Neurons by Herbal Acupuncture in and Models of Parkinson’s Disease Induced by MPP+/MPTP Toxicity. ACTA ACUST UNITED AC 2015. [DOI: 10.13045/acupunct.2015003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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14
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Gao K, Liu M, Cao J, Yao M, Lu Y, Li J, Zhu X, Yang Z, Wen A. Protective effects of Lycium barbarum polysaccharide on 6-OHDA-induced apoptosis in PC12 cells through the ROS-NO pathway. Molecules 2014; 20:293-308. [PMID: 25547727 PMCID: PMC6272587 DOI: 10.3390/molecules20010293] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2014] [Accepted: 12/19/2014] [Indexed: 12/11/2022] Open
Abstract
Oxidative stress plays an important role in Parkinson’s disease and other neurodegenerative disorders. Lycium barbarum polysaccharides (LBP), the main active ingredients extracted from the fruits of Lycium barbarum L., have been shown to be a potent antioxidant. In the present study, we investigated the protective effects, and the possible mechanism of action of LBP against 6-hydroxydopamine (6-OHDA)-induced apoptosis in PC12 cells. Our data demonstrated that LBP significantly reversed the 6-OHDA-induced decrease in cell viability, prevented 6-OHDA-induced changes in condensed nuclei and decreased the percentage of apoptotic cells in a dose-dependent manner. Furthermore, LBP also slowed the accumulation of reactive oxygen species (ROS) and nitric oxide (NO), decreased the level of protein-bound 3-nitrotyrosine (3-NT) and intracellular free Ca2+, and inhibiting the overexpression of nuclear factor κB (NF-κB), neuronal nitric oxide synthase (nNOS) and inducible nitric oxide synthase (iNOS). These results demonstrate that LBP prevents 6-OHDA-induced apoptosis in PC12 cells, at least in part through the ROS-NO pathway.
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Affiliation(s)
- Kai Gao
- Department of Pharmacy, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China.
| | - Meiyou Liu
- Department of Pharmacy, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China.
| | - Jinyi Cao
- Department of Pharmacy, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China.
| | - Minna Yao
- Department of Pharmacy, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China.
| | - Yunyang Lu
- Institute of Materia Medica, School of Pharmacy, Fourth Military Medical University, Xi'an 710032, China.
| | - Jiankang Li
- Department of Pharmacy, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China.
| | - Xiaohe Zhu
- Department of Pharmacy, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China.
| | - Zhifu Yang
- Department of Pharmacy, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China.
| | - Aidong Wen
- Department of Pharmacy, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China.
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Pasban-Aliabadi H, Esmaeili-Mahani S, Sheibani V, Abbasnejad M, Mehdizadeh A, Yaghoobi MM. Inhibition of 6-hydroxydopamine-induced PC12 cell apoptosis by olive (Olea europaea L.) leaf extract is performed by its main component oleuropein. Rejuvenation Res 2014; 16:134-42. [PMID: 23394606 DOI: 10.1089/rej.2012.1384] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Parkinson disease (PD) is the most common progressive neurodegenerative disorder characterized by progressive death of midbrain dopaminergic neurons. Most neurodegenerative disease treatments are, at present, palliative. However, some natural herbal products have been shown to rescue neurons from death and apoptosis in some of neurodegenerative diseases. Not only Olea europaea L. olive oil, but also the leaves of this plant have been used for medical purposes. Olive leaf extract (OLE) is being used by people as a drink across the world and as an integral ingredient in their desire to maintain and improve their health. Here, we investigated the effects of OLE and its main phenolic component oleuropein on 6-hydroxydopamine (6-OHDA)-induced toxicity in rat adrenal pheochromocytoma (PC12) cells as an in vitro model of PD. Cell damage was induced by 150 μM 6-OHDA. The cell survival rate was examined by MTT assay. Generation of intra-cellular reactive oxygen species (ROS) was studied using fluorescence spectrophotometry. Immunoblotting and DNA analysis were also employed to determine the levels of biochemical markers of apoptosis in the cells. The data showed that 6-OHDA could decrease the viability of the cells. In addition, intra-cellular ROS, activated caspase 3, Bax/Bcl-2 ratio, as well as DNA fragmentation were significantly increased in 6-OHDA-treated cells. Incubation of cells with OLE (400 and 600 μg/mL) and oleuropein (20 and 25 μg/mL) could decrease cell damage and reduce biochemical markers of cell death. The results suggest that OLE and oleuropein have anti-oxidant protective effects against 6-OHDA-induced PC12 cell damage. The protective effects of OLE and oleuropein are correlative with their anti-oxidative and anti-apoptotic properties and suggest their therapeutic potential in the treatment of PD.
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Affiliation(s)
- Hamzeh Pasban-Aliabadi
- Laboratory of Molecular Neuroscience, Kerman Neuroscience Research Center, Kerman University of Medical Sciences, Kerman, Iran
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Kim HG, Park G, Piao Y, Kang MS, Pak YK, Hong SP, Oh MS. Effects of the root bark of Paeonia suffruticosa on mitochondria-mediated neuroprotection in an MPTP-induced model of Parkinson’s disease. Food Chem Toxicol 2014; 65:293-300. [DOI: 10.1016/j.fct.2013.12.037] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2013] [Revised: 12/20/2013] [Accepted: 12/22/2013] [Indexed: 10/25/2022]
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Shan MQ, Shang J, Ding AW. Platycladus orientalis leaves: a systemic review on botany, phytochemistry and pharmacology. THE AMERICAN JOURNAL OF CHINESE MEDICINE 2014; 42:523-42. [PMID: 24871649 DOI: 10.1142/s0192415x14500347] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/22/2023]
Abstract
Platycladus orientalis leaves (Cebaiye) have been used for thousands of years as traditional Chinese medicine (TCM). According to the theory of TCM, they are categorized as a blood-cooling and hematostatic herb. In clinical practice, they were usually prescribed with heat-clearing herbs to reinforce the efficacy of hemostasis. The review provides the up-to-date information from 1980 to present that is available on the botany, processing research, phytochemistry, pharmacology and toxicology of the leaves. The information is collected from scientific journals, books, theses and reports via library and electronic search (Google Scholar, Pubmed and CNKI). Through literature reports, we can find that the leaves show a wide spectrum of pharmacological activities, such as anti-inflammatory, antioxidant, antimicrobial, disinsection, anticancer, diuretic, hair growth-promoting, neuroprotective and antifibrotic activities. Diterpene and flavonoids would be active constituents in P. orientalis leaves. Many studies have provided evidence for various traditional uses. However, there is a great need for additional studies to elucidate the mechanism of blood-cooling and hematostatic activity of the leaves. Therefore, the present review on the botany, traditional uses, phytochemistry and toxicity has provided preliminary information for further studies of this herb.
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Affiliation(s)
- Ming-Qiu Shan
- Jiangsu Key Laboratory for Traditional Chinese Medicine Formulae Research, Nanjing University of Chinese Medicine, Nanjing 210046, China
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Jung HW, Kang SY, Park KH, Oh TW, Jung JK, Kim SH, Choi DJ, Park YK. Effect of the Semen Extract of Thuja orientalis on Inflammatory Responses in Transient Focal Cerebral Ischemia Rat Model and LPS-Stimulated BV-2 Microglia. THE AMERICAN JOURNAL OF CHINESE MEDICINE 2013; 41:99-117. [DOI: 10.1142/s0192415x13500080] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
In the central nervous system inflammation is dependent upon the synthesis of various inflammatory mediators by local neurons, astrocytes and especially microglia. In this study, we investigated the anti-inflammatory activities of the semen extract of Thuja orientalis (Thujae Orientalis Semen; TOS) on transient middle cerebral artery occlusion (tMCAO)-induced ischemia in rats and the production of inflammatory mediators such as nitric oxide (NO), prostaglandin E2 (PGE2) and proinflammatory cytokine, interleukin (IL)-1β in lipopolysaccharide (LPS)-stimulated BV-2 mouse microglia. TOS extract significantly decreased the infarction volumes of ischemic brains and also inhibited microglia activation and neuronal death. In addition, TOS extract significantly decreased the production of NO, PGE2 and IL-1β in LPS-stimulated BV-2 microglia. TOS extract also attenuated the expression of inducible nitric oxide synthase (iNOS), cyclooxygenase-2 (COX-2) and IL-1β mRNAs and proteins in activated microglia. Furthermore, TOS extract significantly suppressed the phosphorylation of c-Jun N-terminal kinase (JNK) and p38 MAPK, and the nuclear translocation of NF-κB p65 in activated microglia. Our results indicate that TOS extract is capable of inhibiting microglia activation in an ischemic brain through the down-regulation of inflammatory responses, suggesting that the TOS extract may have therapeutic potential as an anti-inflammatory drug for ischemic stroke.
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Affiliation(s)
- Hyo Won Jung
- Oriental Medicine R&D Center, Dongguk University, Gyeongju 780-714, Republic of Korea
| | - Seok Yong Kang
- Department of Herbology, College of Oriental Medicine, Dongguk University, Gyeongju 780-714, Republic of Korea
| | - Ki Ho Park
- Department of Herbology, College of Oriental Medicine, Dongguk University, Gyeongju 780-714, Republic of Korea
| | - Tae Woo Oh
- Department of Herbology, College of Oriental Medicine, Dongguk University, Gyeongju 780-714, Republic of Korea
| | - Jin Ki Jung
- Department of Herbology, College of Oriental Medicine, Dongguk University, Gyeongju 780-714, Republic of Korea
| | - Song Hee Kim
- Oriental Medicine R&D Center, Dongguk University, Gyeongju 780-714, Republic of Korea
| | - Dong-Jun Choi
- Department of Oriental Internal Medicine, Dongguk University Ilsan Oriental Hospital, Gyeonggido 410-773, Republic of Korea
| | - Yong-Ki Park
- Oriental Medicine R&D Center, Dongguk University, Gyeongju 780-714, Republic of Korea
- Department of Herbology, College of Oriental Medicine, Dongguk University, Gyeongju 780-714, Republic of Korea
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Koppula S, Kumar H, More SV, Lim HW, Hong SM, Choi DK. Recent updates in redox regulation and free radical scavenging effects by herbal products in experimental models of Parkinson's disease. Molecules 2012; 17:11391-420. [PMID: 23014498 PMCID: PMC6268813 DOI: 10.3390/molecules171011391] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2012] [Revised: 09/12/2012] [Accepted: 09/21/2012] [Indexed: 11/16/2022] Open
Abstract
Parkinson’s disease (PD) is a complex multifactorial disease marked by extensive neuropathology in the brain with selective yet prominent and progressive loss of mid-brain dopaminergic neurons. The etiological factors involved in the development of PD are still elusive, but oxidative stress arising when reactive oxygen species (ROS) exceed amounts required for normal redox signaling is considered one of the major factors. ROS cause oxidative damage to proteins, lipids, and DNA and are one of the most prominent factors related to neurodegeneration. Pre-clinical and clinical studies clearly demonstrate the effectiveness of oxidative stress in the pathogenesis of PD. Therefore, regulation of redox signaling and inhibiting excess ROS would contribute greatly not only to extend longevity but also to ameliorate the progression of dopaminergic cell death seen in patients with PD. Several herbal products are beneficial for maintaining nerve cell function and for treating various neurodegenerative disorders by reducing oxidative stress. Here, we summarize the recent knowledge concerning promising herbs that have shown significant beneficial effects based on regulation of redox status and ROS inhibition in toxin-induced PD models.
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Affiliation(s)
- Sushruta Koppula
- Authors to whom correspondence should be addressed; (S.K.); (D.-K.C.); Tel.: +82-43-840-3610 (D.-K.C.); Fax: +82-43-840-3872 (D.-K.C.)
| | | | | | | | | | - Dong-Kug Choi
- Authors to whom correspondence should be addressed; (S.K.); (D.-K.C.); Tel.: +82-43-840-3610 (D.-K.C.); Fax: +82-43-840-3872 (D.-K.C.)
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Sanguisorbae Radix Protects Against 6‐Hydroxydopamine‐induced Neurotoxicity by Regulating NADPH Oxidase and NF‐E2‐related Factor‐2/Heme Oxygenase‐1 Expressions. Phytother Res 2012; 27:1012-7. [DOI: 10.1002/ptr.4802] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2011] [Revised: 07/13/2012] [Accepted: 07/14/2012] [Indexed: 01/30/2023]
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Song JX, Sze SCW, Ng TB, Lee CKF, Leung GPH, Shaw PC, Tong Y, Zhang YB. Anti-Parkinsonian drug discovery from herbal medicines: what have we got from neurotoxic models? JOURNAL OF ETHNOPHARMACOLOGY 2012; 139:698-711. [PMID: 22212501 DOI: 10.1016/j.jep.2011.12.030] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2011] [Revised: 12/20/2011] [Accepted: 12/20/2011] [Indexed: 05/31/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Herbal medicines are used to treat Parkinson's disease (PD) in ancient medical systems in Asian countries such as India, China, Japan and Korea based on their own anecdotal or experience-based theories. AIM OF THE REVIEW To systematically summarize and analyze the anti-Parkinsonian activities of herbal preparations (including active compounds, herbal extracts and formulations) investigated in the neurotoxic models of PD and provide future references for basic and clinical investigations. MATERIALS AND METHODS All the herbal materials tested on in vitro and in vivo neurotoxic models of PD were retrieved from PubMed database by using pre-set searching strings. The relevant compounds and herbal extracts with anti-Parkinsonian activities were included and analyzed according to their chemical classifications or biological activities. RESULTS A total of 51 herbal medicines were analyzed. A diversity of compounds isolated from herbal materials were reported to be effective on neurotoxic models of PD by modulating multiple key events or signaling pathways implicated in the pathogenesis of PD. The main structure types of these compounds belong to catechols, stilbenoids, flavonoids, phenylpropanoids and lignans, phenylethanoid glycosides and terpenes. Although some herbal extracts and formulations have shown positive results on PD animal models, the relative compounds accounting for the effects and the underlying mechanisms remain to be further investigated. CONCLUSIONS Herbal medicines can be an alternative and valuable source for anti-Parkinsonian drug discovery. Compounds classified into stilbenoids, flavonoids, catechols and terpenes may be the most promising candidates for further investigation. Some well-studies compounds such as baicalein, puerarin, resveratrol, curcumin and ginsenosides deserve further consideration in clinical trials. In-depth experimental studies are still needed to evaluate the efficacy of herbal extracts and formulations in PD models.
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Affiliation(s)
- Ju-Xian Song
- School of Chinese Medicine, LKS Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong, China
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Kwon SH, Hong SI, Jung YH, Kim MJ, Kim SY, Kim HC, Lee SY, Jang CG. Lonicera japonica THUNB. protects 6-hydroxydopamine-induced neurotoxicity by inhibiting activation of MAPKs, PI3K/Akt, and NF-κB in SH-SY5Y cells. Food Chem Toxicol 2011; 50:797-807. [PMID: 22227216 DOI: 10.1016/j.fct.2011.12.026] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2011] [Revised: 11/30/2011] [Accepted: 12/15/2011] [Indexed: 11/30/2022]
Abstract
In this study, we investigated the neuroprotective effects of Lonicera japonica THUNB. extract (LJ) on 6-hydroxydopamine (6-OHDA)-induced neurotoxicity in SH-SY5Y cells. We found that LJ significantly increased cell viability decrease, lactate dehydrogenase release (LDH), morphological changes, nuclear condensation, fragmentation, and reactive oxygen species (ROS) production induced by 6-OHDA in SH-SY5Y cells. The cytoprotection afforded by pretreatment with LJ was associated with increases of the glutathione (GSH) level, superoxide dismutase (SOD) activity, and catalase (CAT) activity in 6-OHDA-induced SH-SY5Y cells. In addition, LJ strikingly inhibited 6-OHDA-induced mitochondrial dysfunctions including reduction of mitochondria membrane potential (MMP) and activation of cleaved poly-ADP-ribose polymerase (PARP), cleaved caspase-3, cleaved caspase-9, increased Bax, as well as decreased Bcl-2 and Bcl-xL. Additionally, LJ dramatically attenuated 6-OHDA-induced phosphorylation of c-Jun N-terminal kinase (JNK), p38 mitogen-activated protein kinase (MAPK), extracellular signal-regulated kinase 1/2 (ERK 1/2), and phosphoinositide 3-kinase (PI3K)/Akt. Meanwhile, LJ counteracted nuclear factor-κB (NF-κB) activation by blocking its translocation to the nucleus. These findings suggest that LJ has a potent anti-parkinsonism; this effect was mediated, at least in part, by inhibition of neurotoxicity, apoptotic cascade events, and oxidative stress via activation of MAPKs, PI3K/Akt, and NF-κB.
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Affiliation(s)
- Seung-Hwan Kwon
- Department of Pharmacology, School of Pharmacy, Sungkyunkwan University, Suwon 440-746, Republic of Korea
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Wang J, Sun P, Bao Y, Dou B, Song D, Li Y. Vitamin E renders protection to PC12 cells against oxidative damage and apoptosis induced by single-walled carbon nanotubes. Toxicol In Vitro 2011; 26:32-41. [PMID: 22020378 DOI: 10.1016/j.tiv.2011.10.004] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2011] [Revised: 08/14/2011] [Accepted: 10/06/2011] [Indexed: 12/26/2022]
Abstract
Single-walled carbon nanotubes (SWCNTs) are potential candidates in many biomedical applications. However, many reports demonstrated its potential toxicity to human and other biological systems. Our study has demonstrated that SWCNTs can induce apoptosis and oxidative damage on PC12 cells, an in vitro model of neuronal cells. In the present study, we for the first time investigated the neuroprotective effects of vitamin E (VE) on SWCNT-induced neurotoxicity in cultured PC12 cells. Vitamin E (0.01-2mM) increased PC12 cells viability and significantly attenuated SWCNTs-induced apoptotic cell death in a time and dose-dependent manner, as demonstrated by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay, lactate dehydrogenase (LDH) release and morphological observation. The presence of VE inhibited the formation of reactive oxygen species (ROS), decreased the level of lipid peroxide, elevated the level of glutathione (GSH) and activities of superoxide dismutase (SOD), glutathione peroxidase (GPx), and catalase (CAT). Additionally, VE blocked the reduction in the mitochondrial membrane potential and the activation of caspase-3. VE prevented the down-regulation of Bcl-2 expression and up-regulation of Bax expression induced by SWCNTs in PC12 cells. In summary, VE might protect PC12 cells from the injury induced by SWCNTs through the down-regulation of oxidative stress and prevention of mitochondrial-mediated apoptosis.
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Affiliation(s)
- Jingyun Wang
- School of Life Science and Biotechnology, State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, PR China.
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Tao L, Li X, Zhang L, Tian J, Li X, Sun X, Li X, Jiang L, Zhang X, Chen J. Protective effect of tetrahydroxystilbene glucoside on 6-OHDA-induced apoptosis in PC12 cells through the ROS-NO pathway. PLoS One 2011; 6:e26055. [PMID: 21998750 PMCID: PMC3188584 DOI: 10.1371/journal.pone.0026055] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2011] [Accepted: 09/16/2011] [Indexed: 01/05/2023] Open
Abstract
Oxidative stress plays an important role in the pathogenesis of neurodegenerative diseases, such as Parkinson's disease. The molecule, 2,3,5,4'-tetrahydr- oxystilbene-2-O-β-D-glucoside (TSG), is a potent antioxidant derived from the Chinese herb, Polygonum multiflorum Thunb. In this study, we investigated the protective effect of TSG against 6-hydroxydopamine-induced apoptosis in rat adrenal pheochromocytoma PC12 cells and the possible mechanisms. Our data demonstrated that TSG significantly reversed the 6-hydroxydopamine-induced decrease in cell viability, prevented 6-hydroxydopamine-induced changes in condensed nuclei and decreased the percentage of apoptotic cells in a dose-dependent manner. In addition, TSG slowed the accumulation of intracellular reactive oxygen species and nitric oxide, counteracted the overexpression of inducible nitric oxide syntheses as well as neuronal nitric oxide syntheses, and also reduced the level of protein-bound 3-nitrotyrosine. These results demonstrate that the protective effects of TSG on rat adrenal pheochromocytoma PC12 cells are mediated, at least in part, by the ROS-NO pathway. Our results indicate that TSG may be effective in providing protection against neurodegenerative diseases associated with oxidative stress.
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Affiliation(s)
- Lizhen Tao
- Research Center of Traditional Chinese Medicine, Xijing Hospital, Fourth Military Medical University, Xi'an, People's Republic of China
| | - Xiaofeng Li
- Research Center of Traditional Chinese Medicine, Xijing Hospital, Fourth Military Medical University, Xi'an, People's Republic of China
| | - Lingling Zhang
- Research Center of Traditional Chinese Medicine, Xijing Hospital, Fourth Military Medical University, Xi'an, People's Republic of China
| | - Jiyu Tian
- Research Center of Traditional Chinese Medicine, Xijing Hospital, Fourth Military Medical University, Xi'an, People's Republic of China
| | - Xiaobing Li
- Research Center of Traditional Chinese Medicine, Xijing Hospital, Fourth Military Medical University, Xi'an, People's Republic of China
| | - Xin Sun
- Research Center of Traditional Chinese Medicine, Xijing Hospital, Fourth Military Medical University, Xi'an, People's Republic of China
| | - Xuefen Li
- Research Center of Traditional Chinese Medicine, Xijing Hospital, Fourth Military Medical University, Xi'an, People's Republic of China
| | - Lin Jiang
- Research Center of Traditional Chinese Medicine, Xijing Hospital, Fourth Military Medical University, Xi'an, People's Republic of China
| | - Xiaojun Zhang
- Department of Physics and Mathematics, School of Biomedical Engineering, Fourth Military Medical University, Xi'an, People's Republic of China
| | - Jianzong Chen
- Research Center of Traditional Chinese Medicine, Xijing Hospital, Fourth Military Medical University, Xi'an, People's Republic of China
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Neuroprotective effects of SCM198 on 6-hydroxydopamine-induced behavioral deficit in rats and cytotoxicity in neuronal SH-SY5Y cells. Neurochem Int 2011; 58:851-60. [DOI: 10.1016/j.neuint.2010.11.007] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2010] [Revised: 11/04/2010] [Accepted: 11/10/2010] [Indexed: 11/19/2022]
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Choi JG, Kim HG, Kim MC, Yang WM, Huh Y, Kim SY, Oh MS. Polygalae radix inhibits toxin-induced neuronal death in the Parkinson's disease models. JOURNAL OF ETHNOPHARMACOLOGY 2011; 134:414-421. [PMID: 21195155 DOI: 10.1016/j.jep.2010.12.030] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2010] [Revised: 11/24/2010] [Accepted: 12/24/2010] [Indexed: 05/30/2023]
Abstract
AIM OF THE STUDY Polygalae radix, the root of Polygala tenuifolia Willd, has commonly been used for the treatment of amnesia and anxiety in traditional Korean medicine. The aim of this study was to investigate its neuroprotective effects and possible mechanisms of action in models of Parkinson's disease. MATERIALS AND METHODS This study utilized a 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay, a reactive oxygen species (ROS) assay, a nitric oxide (NO) production assay, and a caspase-3 activity test as measures of cell viability in PC12 cells damaged by 6-hydroxydopamine (6-OHDA). The protective effects of PRE against 1-methyl-4-phenylpyridium (MPP(+))-induced neurotoxicity were assessed in rat primary dopaminergic neurons and in a mouse PD model in which PRE was administered (100mg/kg/day, 3 days, p.o.) before acute 1-mehtyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) toxicity. Finally, TH immunohistochemistry tests were conducted in the substantia nigra pars compacta (SNpc) and striatum (ST). RESULTS AND CONCLUSIONS PRE significantly inhibited 6-OHDA-induced cell damage at doses of 0.05-1μg/ml with a maximal effect at 0.1μg/ml. Caspase-3 activity and the production of ROS and NO were alleviated at 0.1μg/ml. Also at this dose, PRE protected mesencephalic dopaminergic neurons from MPP(+)-induced toxicity. In an in vivo mouse model of PD, PRE protected dopaminergic neurons and fibers from MPTP-induced toxicity in the SNpc and ST. These results demonstrate that PRE has protective effects on dopaminergic neurons via its anti-oxidant and anti-apoptotic activity.
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Affiliation(s)
- Jin Gyu Choi
- Department of Oriental Pharmaceutical Science, College of Pharmacy and Kyung Hee East-West Pharmaceutical Research Institute, Kyung Hee University, #1 Hoegi-dong, Dongdaemun-gu, Seoul 130-701, Republic of Korea
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Kim JY, Kim HJ, Kim SM, Park KR, Jang HJ, Lee EH, Jung SH, Ahn KS. Methylene chloride fraction of the leaves of Thuja orientalis inhibits in vitro inflammatory biomarkers by blocking NF-κB and p38 MAPK signaling and protects mice from lethal endotoxemia. JOURNAL OF ETHNOPHARMACOLOGY 2011; 133:687-695. [PMID: 21040769 DOI: 10.1016/j.jep.2010.10.051] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2010] [Revised: 10/07/2010] [Accepted: 10/23/2010] [Indexed: 05/30/2023]
Abstract
AIM OF THE STUDY Thuja orientalis (TO) has been a recognized herbal medicine across Northeast Asian countries for thousands of years and used for the treatment of various inflammatory diseases through as yet undefined mechanisms. In this study, we set out to determine whether the anti-inflammatory effects of this plant are mediated to suppress mitogen-activated protein kinases (MAPKs) and nuclear factor-κB (NF-κB) activation in lipopolysaccharide (LPS)-stimulated RAW 264.7 cells. MATERIALS AND METHODS RAW 264.7 cells were pretreated with the methylene chloride fraction of TO (MTO) and stimulated with LPS. Nitric oxide (NO) release was determined by the accumulation of nitrite in the culture supernatants and tumor necrosis factor-α (TNF-α) and IL-6 secretion were determined by immunoenzymatic assay. Inducible nitric oxide synthase (iNOS) and cyclooxygenase-2 (COX-2) expression were evaluated via RT-PCR and Western blotting. NF-κB activation was also evaluated by reporter gene assay and electrophoretic mobility shift assay (EMSA). In addition, the protective effect of MTO was evaluated by use of the LPS-induced endotoxin shock model in mice. RESULTS We found that MTO significantly suppressed LPS-stimulated NO and IL-6 production without affecting cell viability. MTO inhibited the expression of LPS-induced iNOS and COX-2 protein and their mRNA expression. Also, TNF-α and IL-6 secretion were decreased by MTO in both PMA and ionomycin-stimulated splenocytes. As a result, MTO inhibited pro-inflammatory cytokines such as TNF-α and IL-6, which is hypothesized as being due to the suppression of LPS-induced p38 MAPK and NF-κB activation. Moreover, MTO improved the survival rate during lethal endotoxemia by inhibiting the production of TNF-α in an animal model and our LC-MS analysis showed that a major component of MTO was pinusolide. CONCLUSIONS We demonstrate here the evidence that the methylene chloride fraction of Thuja orientalis (MTO) potentially inhibits the biomarkers related to inflammation in vitro and in vivo, and might be provided as a potential candidate for the treatment of inflammatory diseases.
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Affiliation(s)
- Jin-Young Kim
- Department of Oriental Pathology, College of Oriental Medicine and Institute of Oriental Medicine, Kyung Hee University, 1 Hoegidong Dongdaemungu, Seoul 130-701, Republic of Korea
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