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Yulak F, Ergul M. Tannic acid protects neuroblastoma cells against hydrogen peroxide - triggered oxidative stress by suppressing oxidative stress and apoptosis. Brain Res 2024; 1844:149175. [PMID: 39168266 DOI: 10.1016/j.brainres.2024.149175] [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: 05/21/2024] [Revised: 08/13/2024] [Accepted: 08/18/2024] [Indexed: 08/23/2024]
Abstract
Recent investigations indicate that tannic acid is associated with a decrease in oxidative damage. Growing evidence supports the protective effects of tannic acid on the central nervous system (CNS). However, uncertainties persist regarding its influence on hydrogen peroxide (H2O2)-triggered oxidative impairment in nerve cells and its interaction with apoptosis. Hence, the objective of this work was to examine the neuroprotective impact of tannic acid on SH-SY5Y cell impairment following H2O2-induced oxidative stress, particularly concerning apoptotic pathways. The control group received no treatment, while the H2O2 group underwent treatment with 0.5 mM H2O2 for a duration of 24 h. The tannic acid group received treatment with different concentrations of tannic acid for a duration of 24 h. Meanwhile, the tannic acid + H2O2 group underwent pre-treatment with tannic acid for one hour and was subsequently subjected to 0.5 mM H2O2 for one day. Within the tannic acid + H2O2 group, the cell viability in SH-SY5Y cells was notably enhanced by tannic acid at concentrations of 2.5, 5, and 10 μM. It also resulted in a considerable rise in TAS (Total Antioxidant Status) levels and a concurrent decline in TOS (Total Oxidant Status) levels, serving as indicators of reduced oxidative stress. Additionally, tannic acid treatment resulted in decreased levels of apoptotic markers (Bax, cleaved PARP, and cleaved caspase 3) and oxidative DNA damage marker (8-oxo-dG), while increasing the anti-apoptotic marker Bcl-2. The findings from flow cytometry also revealed a significant reduction in the apoptosis rate following pretreatment with tannic acid. In summary, tannic acid demonstrates protective effects on SH-SY5Y cells in the face of H2O2-triggered oxidative damage by suppressing both oxidative stress and apoptosis. Nevertheless, additional research is warranted to assess the neuroprotective potential of tannic acid.
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Affiliation(s)
- Fatih Yulak
- Departments of Physiology, School of Medicine, Sivas Cumhuriyet University, 58140 Sivas, Turkey.
| | - Mustafa Ergul
- Department of Biochemistry, Faculty of Pharmacy, Sivas Cumhuriyet University, 58140 Sivas, Turkey.
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2
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Pang QQ, Kim JH, Kim HY, Kim JH, Cho EJ. Protective Effects and Mechanisms of Pectolinarin against H 2O 2-Induced Oxidative Stress in SH-SY5Y Neuronal Cells. Molecules 2023; 28:5826. [PMID: 37570795 PMCID: PMC10420989 DOI: 10.3390/molecules28155826] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Revised: 07/24/2023] [Accepted: 07/31/2023] [Indexed: 08/13/2023] Open
Abstract
This study aims to investigate the protective effects and mechanisms of pectolinarin against oxidative stress-induced cell damage in SH-SY5Y cells. Neurodegenerative diseases-such as Alzheimer's disease-are potentially associated with oxidative stress, which causes excessive production of reactive oxygen species (ROS) that damage DNA and proteins in neuronal cells. The results of this study demonstrate that pectolinarin can scavenge hydroxyl and nitric oxide radicals in a concentration-dependent manner. Moreover, pectolinarin significantly increased cell viability while reducing ROS production and LDH release in the hydrogen peroxide (H2O2)-induced control group. Additionally, Pectolinarin recovered protein expression from H2O2-altered levels back to close-to-normal SH-SY5Y cell levels for components of the oxidative stress, inflammation, and apoptosis pathways-such as nuclear factor erythroid 2-related factor 2 (Nrf2), kelch-like ECH-associated protein (Keap1), anti-heme oxygenase 1 (HO-1), inducible nitric oxide synthase (iNOS), cyclooxygenase-2 (COX-2), interleukin-1β (IL-1β), B-cell lympho-ma-2 (Bcl-2) protein, and Bcl-2-associated X protein (Bax). These findings suggest that pectolinarin has the potential to be used as a plant material for functional foods to be applied in the treatment of neurodegenerative diseases, such as Alzheimer's disease, by mitigating oxidative stress-induced damage to neuronal cells.
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Affiliation(s)
- Qi Qi Pang
- Department of Food Science and Nutrition & Kimchi Research Institute, Pusan National University, Busan 46241, Republic of Korea;
| | - Ji Hyun Kim
- Department of Food Science and Nutrition, Gyeongsang National University, Jinju 52725, Republic of Korea; (J.H.K.); (H.Y.K.)
| | - Hyun Young Kim
- Department of Food Science and Nutrition, Gyeongsang National University, Jinju 52725, Republic of Korea; (J.H.K.); (H.Y.K.)
| | - Ji-Hyun Kim
- Department of Food Science and Nutrition & Kimchi Research Institute, Pusan National University, Busan 46241, Republic of Korea;
| | - Eun Ju Cho
- Department of Food Science and Nutrition & Kimchi Research Institute, Pusan National University, Busan 46241, Republic of Korea;
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3
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Gligor O, Clichici S, Moldovan R, Decea N, Vlase AM, Fizeșan I, Pop A, Virag P, Filip GA, Vlase L, Crișan G. An In Vitro and In Vivo Assessment of Antitumor Activity of Extracts Derived from Three Well-Known Plant Species. PLANTS (BASEL, SWITZERLAND) 2023; 12:plants12091840. [PMID: 37176897 PMCID: PMC10180766 DOI: 10.3390/plants12091840] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Revised: 04/22/2023] [Accepted: 04/24/2023] [Indexed: 05/15/2023]
Abstract
One of the objectives of this study consists of the assessment of the antitumor activity of several extracts from three selected plant species: Xanthium spinosum L., Trifolium pratense L., and Coffea arabica L. and also a comparative study of this biological activity, with the aim of establishing a superior herbal extract for antitumor benefits. The phytochemical profile of the extracts was established by HPLC-MS analysis. Further, the selected extracts were screened in vitro for their antitumor activity and antioxidant potential on two cancer cell lines: A549-human lung adenocarcinoma and T47D-KBluc-human breast carcinoma and on normal cells. One extract per plant was selected for in vivo assessment of antitumor activity in an Ehrlich ascites mouse model. The extracts presented high content of antitumor compounds such as caffeoylquinic acids in the case of X. spinosum L. (7.22 µg/mL-xanthatin, 4.611 µg/mL-4-O-caffeoylquinic acid) and green coffee beans (10.008 µg/mL-cafestol, 265.507 µg/mL-4-O-caffeoylquinic acid), as well as isoflavones in the case of T. pratense L. (6806.60 ng/mL-ononin, 102.78 µg/mL-biochanin A). Concerning the in vitro results, the X. spinosum L. extracts presented the strongest anticancerous and antioxidant effects. In vivo, ascites cell viability decreased after T. pratense L. and green coffee bean extracts administration, whereas the oxidative stress reduction potential was important in tumor samples after T. pratense L. Cell viability was also decreased after administration of cyclophosphamide associated with X. spinosum L. and T. pratense L. extracts, respectively. These results suggested that T. pratense L. or X. spinosum L. extracts in combination with chemotherapy can induce lipid peroxidation in tumor cells and decrease the tumor viability especially, T. pratense L. extract.
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Affiliation(s)
- Octavia Gligor
- Department of Pharmaceutical Botany, Iuliu Hatieganu University of Medicine and Pharmacy, 8 Victor Babes Street, 400347 Cluj-Napoca, Romania
| | - Simona Clichici
- Department of Physiology, Iuliu Hatieganu University of Medicine and Pharmacy, 8 Victor Babes Street, 400347 Cluj-Napoca, Romania
| | - Remus Moldovan
- Department of Physiology, Iuliu Hatieganu University of Medicine and Pharmacy, 8 Victor Babes Street, 400347 Cluj-Napoca, Romania
| | - Nicoleta Decea
- Department of Physiology, Iuliu Hatieganu University of Medicine and Pharmacy, 8 Victor Babes Street, 400347 Cluj-Napoca, Romania
| | - Ana-Maria Vlase
- Department of Pharmaceutical Botany, Iuliu Hatieganu University of Medicine and Pharmacy, 8 Victor Babes Street, 400347 Cluj-Napoca, Romania
| | - Ionel Fizeșan
- Department of Toxicology, Faculty of Pharmacy, Iuliu Hatieganu University of Medicine and Pharmacy, 8 Victor Babes Street, 400347 Cluj-Napoca, Romania
| | - Anca Pop
- Department of Toxicology, Faculty of Pharmacy, Iuliu Hatieganu University of Medicine and Pharmacy, 8 Victor Babes Street, 400347 Cluj-Napoca, Romania
| | - Piroska Virag
- Department of Radiobiology and Tumor Biology, Oncology Institute "Prof. Dr. Ion Chiricuță", 34-36 Republicii Street, 400015 Cluj-Napoca, Romania
| | - Gabriela Adriana Filip
- Department of Physiology, Iuliu Hatieganu University of Medicine and Pharmacy, 8 Victor Babes Street, 400347 Cluj-Napoca, Romania
| | - Laurian Vlase
- Department of Pharmaceutical Technology and Biopharmaceutics, University of Medicine and Pharmacy, 8 Victor Babes Street, 400347 Cluj-Napoca, Romania
| | - Gianina Crișan
- Department of Pharmaceutical Botany, Iuliu Hatieganu University of Medicine and Pharmacy, 8 Victor Babes Street, 400347 Cluj-Napoca, Romania
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4
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Yosri N, Alsharif SM, Xiao J, Musharraf SG, Zhao C, Saeed A, Gao R, Said NS, Di Minno A, Daglia M, Guo Z, Khalifa SAM, El-Seedi HR. Arctium lappa (Burdock): Insights from ethnopharmacology potential, chemical constituents, clinical studies, pharmacological utility and nanomedicine. Biomed Pharmacother 2023; 158:114104. [PMID: 36516694 DOI: 10.1016/j.biopha.2022.114104] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 11/27/2022] [Accepted: 12/05/2022] [Indexed: 12/14/2022] Open
Abstract
Arctium lappa L. is a medicinal edible homologous plant, commonly known as burdock or bardana, which belongs to the Asteraceae family. It is widely distributed throughout Northern Asia, Europe, and North America and has been utilized for hundreds of years. The roots, fruits, seeds, and leaves of A. lappa have been extensively used in traditional Chinese Medicine (TCM). A. lappa has attracted a great deal of attention due to its possession of highly recognized bioactive metabolites with significant therapeutic potential. Numerous pharmacological effects have been demonstrated in vitro and in vivo by A. lappa and its bioactive metabolites, including antimicrobial, anti-obesity, antioxidant, anticancer, anti-inflammatory, anti-diabetic, anti-allergic, antiviral, gastroprotective, hepatoprotective, and neuroprotective activities. Additionally, A. lappa has demonstrated considerable clinical efficacies and valuable applications in nanomedicine. Collectively, this review covers the properties of A. lappa and its bioactive metabolites, ethnopharmacology aspects, pharmacological effects, clinical trials, and applications in the field of nanomedicine. Hence, a significant attention should be paid to clinical trials and industrial applications of this plant with particular emphasis, on drug discovery and nanotechnology.
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Affiliation(s)
- Nermeen Yosri
- Chemistry Department of Medicinal and Aromatic Plants, Research Institute of Medicinal and Aromatic Plants (RIMAP), Beni-Suef University, Beni-Suef 62514, Egypt
| | - Sultan M Alsharif
- Biology Department, Faculty of Science, Taibah University, Al Madinah 887, Saudi Arabia
| | - Jianbo Xiao
- Department of Analytical Chemistry and Food Science, Faculty of Food Science and Technology, University of Vigo, Vigo, Spain
| | - Syed G Musharraf
- H.E.J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan
| | - Chao Zhao
- College of Marine Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Aamer Saeed
- Chemistry Department, Quaid-i-Azam University, Islamabad 45320, Pakistan
| | - Ruichang Gao
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Noha S Said
- Department of Chemistry, Faculty of Science, Menoufia University, Shebin El-Kom 32512, Egypt
| | - Alessandro Di Minno
- Department of Pharmacy, University of Napoli Federico II, Via D. Montesano 49, 80131 Naples, Italy; CEINGE-Biotecnologie Avanzate, Naples 80131, Italy
| | - Maria Daglia
- Department of Pharmacy, University of Napoli Federico II, Via D. Montesano 49, 80131 Naples, Italy; International Research Center for Food Nutrition and Safety, Jiangsu University, Zhenjiang 212013, China
| | - Zhiming Guo
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Shaden A M Khalifa
- Department of Molecular Biosciences, Stockholm University, The Wenner-GrenInstitute, SE-106 91 Stockholm, Sweden
| | - Hesham R El-Seedi
- Department of Chemistry, Faculty of Science, Menoufia University, Shebin El-Kom 32512, Egypt; International Research Center for Food Nutrition and Safety, Jiangsu University, Zhenjiang 212013, China; Pharmacognosy Group, Department of Pharmaceutical Biosciences, Uppsala University, Biomedical Centre, Box 591, SE 751 24 Uppsala, Sweden; International Joint Research Laboratory of Intelligent Agriculture and Agri-products Processing (Jiangsu Education Department), Zhenjiang 212013, China.
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5
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Zhang X, Li M, Wu H, Fan W, Zhang J, Su W, Wang Y, Li P. Naringenin attenuates inflammation, apoptosis, and ferroptosis in silver nanoparticle-induced lung injury through a mechanism associated with Nrf2/HO-1 axis: In vitro and in vivo studies. Life Sci 2022; 311:121127. [PMID: 36306867 DOI: 10.1016/j.lfs.2022.121127] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2022] [Revised: 10/14/2022] [Accepted: 10/22/2022] [Indexed: 11/06/2022]
Abstract
With the wide application of silver nanoparticles (AgNPs), their potential damage to human health needs to be investigated. Lung is one of the main target organs after inhalation of AgNPs. Naringenin has been reported to have anti-inflammatory and anti-oxidative properties. This study aims to evaluate the protective effects of naringenin against AgNPs-induced lung injury and determine the underlying mechanism. In in vivo experiments, AgNPs were intratracheally instilled into ICR mice (l mg/kg) to establish a lung injury model. These mice were then treated with naringenin by oral gavage (25, 50, 100 mg/kg) for three days. Naringenin treatment decreased the levels of white blood cells, neutrophils, and lymphocytes in the blood, ameliorated lung injury, suppressed the release of pro-inflammatory cytokines, normalized ferroptotic markers and prevented oxidative stress with elevating Nrf2 and HO-1 protein expressions in lung. In in vitro experiments, BEAS-2B cells were firstly treated with AgNPs (320 μg/mL) and then naringenin (25, 50, and 100 μM), respectively. Naringenin attenuated AgNPs-induced oxidative stress and inflammatory response. Moreover, naringenin attenuated AgNPs-induced apoptosis with modulated low BAX, CytC, cleaved Caspase9, cleaved Caspase3 but high Bcl2. Furthermore, naringenin effectively decreased ferroptotic markers and increased the protein expressions of Nrf2 and HO-1, as well as increased the nuclear translocation of Nrf2. Importantly, the anti-apoptotic and anti-ferroptotic effects of naringenin in BEAS-2B cells were found to be at least partially Nrf2-dependent. These results indicated that naringenin exerted anti-inflammation, anti-apoptosis, and anti-ferroptosis effects and protected against AgNPs-induced lung injury at least partly via activating Nrf2/HO-1 signaling pathway.
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Affiliation(s)
- Xinxu Zhang
- Guangdong Engineering and Technology Research Center for Quality and Efficacy Re-Evaluation of Post-Marketed TCM, State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, PR China.
| | - Min Li
- Guangdong Engineering and Technology Research Center for Quality and Efficacy Re-Evaluation of Post-Marketed TCM, State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, PR China.
| | - Hao Wu
- Guangdong Engineering and Technology Research Center for Quality and Efficacy Re-Evaluation of Post-Marketed TCM, State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, PR China.
| | - Weiyang Fan
- Guangdong Engineering and Technology Research Center for Quality and Efficacy Re-Evaluation of Post-Marketed TCM, State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, PR China.
| | - Jiashuo Zhang
- Guangdong Engineering and Technology Research Center for Quality and Efficacy Re-Evaluation of Post-Marketed TCM, State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, PR China
| | - Weiwei Su
- Guangdong Engineering and Technology Research Center for Quality and Efficacy Re-Evaluation of Post-Marketed TCM, State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, PR China.
| | - Yonggang Wang
- Guangdong Engineering and Technology Research Center for Quality and Efficacy Re-Evaluation of Post-Marketed TCM, State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, PR China.
| | - Peibo Li
- Guangdong Engineering and Technology Research Center for Quality and Efficacy Re-Evaluation of Post-Marketed TCM, State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, PR China.
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Park JS, Kim T, Kim D, Jeong YIL. The Effect of Oxidative Stress and Memantine-Incorporated Reactive Oxygen Species-Sensitive Nanoparticles on the Expression of N-Methyl-d-aspartate Receptor Subunit 1 in Brain Cancer Cells for Alzheimer's Disease Application. Int J Mol Sci 2021; 22:ijms222212309. [PMID: 34830191 PMCID: PMC8619842 DOI: 10.3390/ijms222212309] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Revised: 11/02/2021] [Accepted: 11/12/2021] [Indexed: 02/06/2023] Open
Abstract
The aim of this study is to fabricate reactive oxygen species (ROS)-sensitive nanoparticles composed of succinyl β-cyclodextrin (bCDsu), memantine and thioketal linkages for application in Alzheimer's disease, and to investigate the suppression of N-methyl-d-aspartate (NMDA) receptor 1 (NMDAR1) in cells. Thioketal diamine was attached to the carboxyl group of bCDsu to produce thioketal-decorated bCDsu conjugates (bCDsu-thioketal conjugates) and memantine was conjugated with thioketal dicarboxylic acid (memantine-thioketal carboxylic acid conjugates). Memantine-thioketal carboxylic acid conjugates were attached to bCDsu-thioketal conjugates to produce bCDsu-thioketal-memantine (bCDsuMema) conjugates. SH-SY5Y neuroblastoma cells and U87MG cells were used for NMDAR1 protein expression and cellular oxidative stress. Nanoparticles of bCDsuMema conjugates were prepared by means of a dialysis procedure. Nanoparticles of bCDsuMema conjugates had small particle sizes less than 100 nm and their morphology was found to be spherical in transmission electron microscopy observations (TEM). Nanoparticles of bCDsuMema conjugates responded to H2O2 and disintegrated or swelled in aqueous solution. Then, the nanoparticles rapidly released memantine according to the concentration of H2O2. In an in vivo animal imaging study, thioketal-decorated nanoparticles labelled with fluorescent dye such as chlorin e6 (Ce6) showed that the fluorescence intensity was stronger in the brain than in other organs, indicating that bCDsuMema nanoparticles can efficiently target the brain. When cells were exposed to H2O2, the viability of cells was time-dependently decreased. Memantine or bCDsuMema nanoparticles did not practically affect the viability of the cells. Furthermore, a western blot assay showed that the oxidative stress produced in cells using H2O2 increased the expression of NMDAR1 protein in both SH-SY5Y and U87MG cells. Memantine or bCDsuMema nanoparticles efficiently suppressed the NMDAR1 protein, which is deeply associated with Alzheimer's disease. Fluorescence microscopy also showed that H2O2 treatment induced green fluorescence intensity, which represents intracellular ROS levels. Furthermore, H2O2 treatment increased the red fluorescence intensity, which represents the NMDAR1 protein, i.e., oxidative stress increases the expression of NMDAR1 protein level in both SH-SY5Y and U87MG cells. When memantine or bCDsuMema nanoparticles were treated in cells, the oxidative stress-mediated expression of NMDAR1 protein in cells was significantly decreased, indicating that bCDsuMema nanoparticles have the capacity to suppress NMDAR1 expression in brain cells, which has relevance in terms of applications in Alzheimer's disease.
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Affiliation(s)
- Jung Sun Park
- Department of Internal Medicine, Chonnam National University Medical School, 42 Jebongro, Gwangju 61469, Korea;
| | - Taeyeon Kim
- College of Art&Science, University of Pennsylvania, 249 S 36th St., Philadelphia, PA 19104, USA;
| | - Dohoon Kim
- Department of Integrative Physiology and Pathobiology, Tufts University School of Medicine, Boston, MA 02111, USA;
| | - Young-IL Jeong
- Research Institute of Convergence of Biomedical Sciences, Pusan National University Yangsan Hospital, Yangsan 50612, Korea
- Correspondence: ; Tel.: +82-10-9212-9859
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Al Mughairbi F, Nawaz R, Khan F, Hassan A, Mahmood N, Ahmed HT, Alshamali A, Ahmed S, Bashir A. Neuroprotective effects of Bhilawanol and Anacardic acid during glutamate-induced neurotoxicity. Saudi Pharm J 2021; 29:1043-1049. [PMID: 34588850 PMCID: PMC8463467 DOI: 10.1016/j.jsps.2021.07.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Accepted: 07/04/2021] [Indexed: 11/19/2022] Open
Abstract
Bhilawanol (Bh) and anacardic acid (AA) are two lipid-soluble compounds mostly found in the nut of Semecarpus anacardium (SA). This herb has many medicinal properties including enhancing learning and memory, yet its active compounds have not been studied for neuroprotective effects. We investigated the neuroprotective effects of Bh and AA against glutamate induced cell death in the adrenal pheochromocytoma cell line of rats (PC12 cells). Cell viability, toxicity and calcium influx were determined by MTT assay, LDH release assay and Fluo-3 imaging while apoptosis was assayed by caspase-3 and Bcl-2 gene expression. Our results showed that Bh and AA treatments significantly increased cell viability, reduced cell toxicity and calcium influx in PC12 cells in addition to suppressing the reactive oxygen species. Furthermore, AA treatment decreased caspase-3 expression level whereas both Bh and AA enhanced the expression of anti-apoptotic gene Bcl-2 in PC12 cells. Both compounds potently inhibited acetylcholinesterase enzyme (AChE) in a dose and time dependent manner. These findings suggest that the traditional use of SA may be explained on the basis of both Bh and AA showing neuroprotective potential due to their effects on enhancing cell viability, reducing cell toxicity most probably by reducing excessive calcium influx and suppression of ROS as well as by decreasing the expression of proapoptotic caspase 3 gene and increasing the expression of antiapoptotic gene Bcl2. Traditional use in enhancing learning and memory was justified in part by inhibition of AChE.
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Affiliation(s)
- Fadwa Al Mughairbi
- Dep. of Clinical Psychology, College of Medicines and Health Sciences, UAE University, Al Ain, United Arab Emirates
- Corresponding author at: Dep of Clinical Psychology, College of Medicine & Health Sciences, UAE University, Al Ain, United Arab Emirates.
| | - Rukhsana Nawaz
- Dep. of Clinical Psychology, College of Medicines and Health Sciences, UAE University, Al Ain, United Arab Emirates
| | - Faisal Khan
- Panjwani Center for Molecular Medicine and Drug Research (PCMD), International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan
| | - Amina Hassan
- Dep. of Clinical Psychology, College of Medicines and Health Sciences, UAE University, Al Ain, United Arab Emirates
| | - Nailah Mahmood
- Dep. of Clinical Psychology, College of Medicines and Health Sciences, UAE University, Al Ain, United Arab Emirates
| | - Heba Tageldeen Ahmed
- Dep. of Clinical Psychology, College of Medicines and Health Sciences, UAE University, Al Ain, United Arab Emirates
| | - Alia Alshamali
- Dep. of Clinical Psychology, College of Medicines and Health Sciences, UAE University, Al Ain, United Arab Emirates
| | - Sagheer Ahmed
- Shifa College of Pharmaceutical Sciences, Shifa Tameer-e-Millat University, Islamabad, Pakistan
| | - Asma Bashir
- Endodontic Department, Hamdan Bin Mohammed College of Dental Medicine, Mohammed Bin Rashid University of Medicine and Health Sciences, Dubai, United Arab Emirates
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8
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Ju L, Zhang J, Wang F, Zhu D, Pei T, He Z, Han Z, Wang M, Ma Y, Xiao W. Chemical profiling of Houttuynia cordata Thunb. by UPLC-Q-TOF-MS and analysis of its antioxidant activity in C2C12 cells. J Pharm Biomed Anal 2021; 204:114271. [PMID: 34325249 DOI: 10.1016/j.jpba.2021.114271] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2021] [Revised: 06/25/2021] [Accepted: 07/15/2021] [Indexed: 12/09/2022]
Abstract
Houttuynia cordata Thunb. ("Yu-Xing-Cao"), a traditional Chinese medicinal herb, has long been used to treat various diseases. However, detailed information regarding the chemical constituents of H. cordata aqueous extract is lacking, and the molecular basis of its beneficial effects on muscle is unknown. To investigate these points, in this study, we used ultra-performance liquid chromatography coupled with quadrupole-time-of-flight-mass spectrometry (UPLC-Q-TOF-MS) in positive and negative ion modes to profile and identify the major constituents of H. cordata water extract. A total of 63 peaks were identified based on mass and fragmentation characteristics, including 29 organic acids and their glycosides, 17 flavonoids, 7 volatiles, 4 pyrimidine and purine derivatives, 2 alkaloids, 2 amino acids, 1 isovanillin, and 1 coumarin. The total flavonoid and polyphenol contents of the extract were 4.77 and 139.15 mg/mL, respectively, by ultraviolet spectrophotometry. The cytoprotective activity of H. cordata aqueous extract was evaluated using C2C12 cells treated with tumor necrosis factor (TNF)-α to induce oxidative challenge. The TNF-α induced decrease in cell viability was reversed by treatment for 48 h with the extract; moreover, superoxide dismutase activity was increased while reactive oxygen species level was decreased. These results provide molecular-level evidence for the antioxidant effect of H. cordata extract and highlight its therapeutic potential for the treatment of muscle injury or diseases caused by oxidative stress.
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Affiliation(s)
- Liliang Ju
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China
| | - Jiaxing Zhang
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China
| | - Fujing Wang
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China
| | - Daoqi Zhu
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China
| | - Tingting Pei
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China
| | - Zhuoen He
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China
| | - Zhongxiao Han
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China
| | - Mingqing Wang
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China.
| | - Yun Ma
- Department of Pharmacy, Nanfang Hospital, Southern Medical University, Guangzhou, China.
| | - Wei Xiao
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China; Department of Traditional Chinese Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, China.
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9
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Wang H, Dou S, Zhu J, Shao Z, Wang C, Xu X, Cheng B. Ghrelin protects against rotenone-induced cytotoxicity: Involvement of mitophagy and the AMPK/SIRT1/PGC1α pathway. Neuropeptides 2021; 87:102134. [PMID: 33639357 DOI: 10.1016/j.npep.2021.102134] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Revised: 02/12/2021] [Accepted: 02/14/2021] [Indexed: 12/17/2022]
Abstract
Parkinson's disease (PD) is the second most common neurodegenerative disorder, characterized by the loss of dopaminergic neurons in the substantia nigra and the deposition of Lewy bodies. Mitochondrial dysfunction, oxidative stress, and autophagy dysfunction are involved in the pathogenesis of PD. Ghrelin is a brain-gut peptide that has been reported that protected against 1-methyl-4-phenyl-1,2,3,6- tetrahydropyran (MPTP)/MPP+-induced toxic effects. In the present work, human neuroblastoma SH-SY5Y cells were exposed to rotenone as a PD model to explore the underlying mechanism of ghrelin. We found that ghrelin inhibited rotenone-induced cytotoxicity, mitochondrial dysfunction, and apoptosis by improving cell viability, increasing the ratio of red/green of JC-1, inhibiting the production of reactive oxidative species (ROS), and regulating Bcl-2, Bax, Cytochrome c, caspase-9, and caspase-3 expression. Besides, ghrelin promoted mitophagy accompanied by up-regulating microtubule-associated protein 1 Light Chain 3B-II/I(LC3B-II/I) and Beclin1 but decreasing the expression of p62. Moreover, ghrelin promoted PINK1/Parkin mitochondrial translocation. Additionally, we investigated that ghrelin activated the AMPK/SIRT1/PGC1α pathway and pharmacological inhibition of AMPK and SIRT1 abolished the cytoprotection of ghrelin, decreased the level of mitophagy, and PINK1/Parkin mitochondrial translocation. Taken together, our findings suggested that mitophagy and AMPK/SIRT1/PGC1α pathways were related to the cytoprotection of ghrelin. These findings provided novel insights into the underlying mechanisms of ghrelin, further mechanistic studies on preclinical and clinical levels are required to be conducted with ghrelin to avail and foresee it as a potential agent in the treatment and management of PD.
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Affiliation(s)
- Huiqing Wang
- Cheeloo College of Medicine, Shandong University, 250014 Jinan, China
| | - Shanshan Dou
- Neurobiology Institute, Jining Medical University, 272067 Jining, China
| | - Junge Zhu
- Cheeloo College of Medicine, Shandong University, 250014 Jinan, China
| | - Ziqi Shao
- Cheeloo College of Medicine, Shandong University, 250014 Jinan, China
| | - Chunmei Wang
- Neurobiology Institute, Jining Medical University, 272067 Jining, China
| | - Xudong Xu
- College of Basic Medicine, Jining Medical University, 272067 Jining, China.
| | - Baohua Cheng
- Neurobiology Institute, Jining Medical University, 272067 Jining, China.
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10
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Zhan S, Wang W, Kong L. Protective effects and mechanism of action of ruscogenin in a mouse model of ovalbumin-induced asthma. J Asthma 2021; 59:1079-1086. [PMID: 33780307 DOI: 10.1080/02770903.2021.1901914] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
OBJECTIVE Ruscogenin is a natural product exhibiting anti-inflammatory, antioxidant, and anti-apoptotic effects; however, its effectiveness for asthma management has not yet been reported. The aim of this study was to explore the role of ruscogenin in airway inflammation and apoptosis in asthma. METHODS In vivo, female 6- to 8-week-old CL57 mice were sensitized to ovalbumin and challenged intranasally for 7 days. One group was gavaged with ruscogenin before ovalbumin challenge. At the end of the challenge period, airway hyperresponsiveness and airway inflammation were evaluated. Enzyme-linked immunosorbent assay was used to estimate the oxidative stress levels. A terminal deoxynucleotidyl transferase dUDP nick-end labeling assay was used to determine the extent of apoptosis. Immunohistochemistry and western blotting were performed to examine VDAC1 expression. In vitro, human bronchial epithelial (HBE) cells were treated with H2O2, ruscogenin, or disulfonate salt, and flow cytometry was used to calculate the apoptosis ratio and detect mitochondrial calcium levels. RESULTS In vivo, ruscogenin improved airway hyperresponsiveness and airway inflammation, while reducing oxidative stress, the apoptosis ratio and VDAC1 expression in asthmatic lungs. In vitro, ruscogenin attenuated apoptosis in HBE cells by decreasing the levels of VDAC1 expression and mitochondrial calcium. CONCLUSION Ruscogenin reduced oxidative stress and apoptosis in the airway epithelium by inhibiting VDAC1 expression and mitochondrial handling of calcium.
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Affiliation(s)
- Shanshan Zhan
- Department of Respiratory and Critical Care Medicine, Institute of Respiratory Diseases, the First Affiliated Hospital of China Medical University, Shenyang, Liaoning, China
| | - Wei Wang
- Department of Respiratory and Critical Care Medicine, Institute of Respiratory Diseases, the First Affiliated Hospital of China Medical University, Shenyang, Liaoning, China
| | - Lingfei Kong
- Department of Respiratory and Critical Care Medicine, Institute of Respiratory Diseases, the First Affiliated Hospital of China Medical University, Shenyang, Liaoning, China
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11
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Huang SC, Cao QQ, Cao YB, Yang YR, Xu TT, Yue K, Liu F, Tong ZX, Wang XB. Morinda officinalis polysaccharides improve meat quality by reducing oxidative damage in chickens suffering from tibial dyschondroplasia. Food Chem 2020; 344:128688. [PMID: 33246686 DOI: 10.1016/j.foodchem.2020.128688] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Revised: 11/17/2020] [Accepted: 11/17/2020] [Indexed: 12/17/2022]
Abstract
Tibial dyschondroplasia (TD) is the common leg disease in commercial broilers. However, the effects of TD on meat quality and the protective of Morinda officinalis polysaccharide (MOP) are largely unknown. Three hundred broiler chicks (one-day-old) were equally allocated into control (CON), TD and MOP-treated groups for 15 days. The results indicated that TD influenced morphology and meat quality-related parameters of the breast muscle, and changed the activity and mRNA expression of antioxidant enzymes in plasma and breast muscles. Moreover, metabolomics profiling of breast muscle revealed that the main altered metabolites 4-guanidinobutyric acid and chenodeoxycholic acid, which are related to meat quality and oxidative stress. Additionally, 500 mg/L MOP effectively restored the content of meat metabolites and oxidative damage. These findings suggest that oxidative damage caused by TD may affect meat quality in broilers by changing the content of breast muscle metabolites and that MOP supplementation has a restorative effect.
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Affiliation(s)
- Shu-Cheng Huang
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou 450002, PR China.
| | - Qin-Qin Cao
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou 450002, PR China
| | - Ya-Bing Cao
- College of Forestry, Henan Agricultural University, Zhengzhou 450002, PR China
| | - Yu-Rong Yang
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou 450002, PR China
| | - Ting-Ting Xu
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou 450002, PR China
| | - Ke Yue
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou 450002, PR China
| | - Fang Liu
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou 450002, PR China
| | - Zong-Xi Tong
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou 450002, PR China
| | - Xue-Bing Wang
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou 450002, PR China.
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12
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Wang H, Dou S, Zhu J, Shao Z, Wang C, Cheng B. Ghrelin mitigates MPP +-induced cytotoxicity: Involvement of ERK1/2-mediated Nrf2/HO-1 and endoplasmic reticulum stress PERK signaling pathway. Peptides 2020; 133:170374. [PMID: 32814076 DOI: 10.1016/j.peptides.2020.170374] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Revised: 07/12/2020] [Accepted: 07/13/2020] [Indexed: 02/08/2023]
Abstract
Parkinson's disease (PD) is a common progressive and multifactorial neurodegenerative disease. Current pharmacological therapies for PD are inadequate and often accompanied by serious side effects. In search of neuroprotective agents being considered to be beneficial to PD therapy. Ghrelin confers neuroprotective effect in 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP)-lesioned PD model, but the underlying mechanism remains not fully elucidated. Here, we utilized human neuroblastoma SH-SY5Y cells exposed to MPP+ as a PD model to investigate the underlying mechanism of Ghrelin. In our present work, cell viability, cell apoptosis, oxidative stress-related indicators, and the level of Nrf2, HO-1, PERK, eIF2α, ATF4, CHOP, and ERK1/2 were examined. The results showed that Ghrelin attenuated MPP+-induced change of cell viability, apoptosis, coupled with decreased Cytochrome c, caspase-9, and caspase-3 expressions. Consistently, Ghrelin suppressed MPP+-induced oxidative stress. Moreover, Ghrelin markedly enhanced Nrf2 expression and nuclear accumulation as well as HO-1 induction. Further investigations showed that Ghrelin significantly inhibited the endoplasmic reticulum stress PERK-eIF2α-ATF4-CHOP pathway. Interestingly, we then found that Ghrelin promoted phosphorylation of ERK1/2, and pharmacological inhibition of ERK signaling abolished the cytoprotective effect of Ghrelin. Furthermore, we also found promoting the activation of the Nrf2/ HO-1 pathway and suppressing of the PERK pathway were mediated by ERK1/2. These findings provided novel insights into the underlying mechanisms of Ghrelin exerted protective effect, suggesting its potential as a novel therapeutic strategy against PD.
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Affiliation(s)
- Huiqing Wang
- Cheeloo College of Medicine, Shandong University, China
| | | | - Junge Zhu
- Cheeloo College of Medicine, Shandong University China
| | - Ziqi Shao
- Cheeloo College of Medicine, Shandong University China
| | - Chunmei Wang
- Neurobiology Institute, Jining Medical University China
| | - Baohua Cheng
- Neurobiology Institute, Jining Medical University China.
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13
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Zhang D, Zhang Q, Zheng Y, Lu J. Anti-breast cancer and toxicity studies of total secondary saponin from Anemone raddeana Rhizome on MCF-7 cells via ROS generation and PI3K/AKT/mTOR inactivation. JOURNAL OF ETHNOPHARMACOLOGY 2020; 259:112984. [PMID: 32446927 DOI: 10.1016/j.jep.2020.112984] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Revised: 05/01/2020] [Accepted: 05/14/2020] [Indexed: 06/11/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The rhizome of Anemone raddeana Regel (A. raddeana) is a famous traditional Chinese medicine (TCM) recorded in Chinese Pharmacopoeia for the treatment of carbuncle and swelling. Carbuncle swollen is an explanation of tumor in the theory of TCM and softening and resolving hard mass effects are one of the important pharmacological activities of A. raddeana. AIM OF THE STUDY We investigated the potential anti-breast cancer effect and toxicological properties of alkali-ethanol extract from A. raddeana, namely total secondary saponin (TSS). MATERIALS AND METHODS Anti-proliferative effect of total saponin of A. raddeana (ATS) and TSS were tested using MTT assay. Hoechst staining, flow cytometry analysis, DCFH-DA fluorescence microscopy and western blot were carried out to evaluate the mechanisms of action of TSS. The potential anti-breast cancer activity and toxicological properties of TSS were tested in vivo. RESULTS ATS and TSS could inhibit the proliferation of A549, HepG2, MCF-7, MDA-MB-231 and SKBr-3 cells, especially for MCF-7 cells. Flow cytometry analysis revealed that TSS (10, 12 and 15 μg/ml) could induce cell cycle arrest on G0/G1 phase and promote apoptosis of MCF-7 cells. TSS could increase Bax/Bcl-2 ratio, elevate cytochrome c levels in cytosol and activate caspase-3/9. In addition, TSS also induced ROS generation and inactivated PI3K/AKT/mTOR pathway which may involved in the mitochondrial dysfunction of MCF-7 cells. TSS showed slight toxic at the dosage of 100 and 200 mg/kg by oral administration without any toxic potential for 28 days. TSS (50, 100 and 200 mg/kg) showed significant inhibitory effect on growth of transplanted tumor in mice. At last, twenty-three C-3 monosaccharide oleanane-type triterpene saponins were tentatively identified, which may contributed to the anti-cancer activity of TSS. CONCLUSION This study demonstrated that TSS exhibited anti-proliferative and pro-apoptosis activities on MCF-7 cells via ROS-mediated activation of mitochondrial apoptosis pathway. TSS might be used as chemotherapeutic agent for the treatment of breast cancer with relatively low toxicity.
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Affiliation(s)
- Dandan Zhang
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang 110006, PR China
| | - Qiao Zhang
- Zhejiang Provincial Key Laboratory for Drug Evaluation and Clinical Research, Research Center for Clinical Pharmacy, First Affiliated Hospital, College of Medicine, Zhejiang University, 79# Qingchun Road, Hangzhou, 310003, PR China
| | - Yunliang Zheng
- Zhejiang Provincial Key Laboratory for Drug Evaluation and Clinical Research, Research Center for Clinical Pharmacy, First Affiliated Hospital, College of Medicine, Zhejiang University, 79# Qingchun Road, Hangzhou, 310003, PR China
| | - Jincai Lu
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang 110006, PR China; Liaoning Provincial Key Laboratory of TCM Resources Conservation and Development, Shenyang Pharmaceutical University, Shenyang 110006, PR China.
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14
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Gao H, Jiang XW, Yang Y, Liu WW, Xu ZH, Zhao QC. Isolation, structure elucidation and neuroprotective effects of caffeoylquinic acid derivatives from the roots of Arctium lappa L. PHYTOCHEMISTRY 2020; 177:112432. [PMID: 32562918 DOI: 10.1016/j.phytochem.2020.112432] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2020] [Revised: 05/29/2020] [Accepted: 06/03/2020] [Indexed: 06/11/2023]
Abstract
Five undescribed caffeoylquinic acid derivatives (CQAs), along with fifteen known CQAs, were isolated from the roots of Arctium lappa L.(burdock). The chemical structures of compounds were determined using extensive spectroscopic analyses, including UV, IR, NMR and MS. Further in vitro bioactive investigation demonstrated the neuroprotective effects of these compounds against the neurotoxicity of hydrogen peroxide (H2O2) and N-methyl-D-aspartate (NMDA). 1,3,5-tri-O-caffeoylquinic acid and 1,4,5-tri-O-caffeoylquinic acid significantly reduced H2O2-induced human neuroblastoma SH-SY5Y cell death with concentration for 50% of maximal effect (EC50) values of 17.3 and 19.3 μM. Meanwhile, 3,5-di-O-caffeoyl-1-O-maloylquinic acid displayed protective effect against NMDA-induced cell injury with EC50 values of 18.4 μM. Overall, the more caffeoyl, the better the antioxidant activity, while the maloyl-containing compounds had better anti-NMDA activity.
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Affiliation(s)
- Huan Gao
- Department of Pharmacy, General Hospital of Northern Theater Command, Shenyang, 110840, People's Republic of China
| | - Xiao-Wen Jiang
- Department of Pharmacy, General Hospital of Northern Theater Command, Shenyang, 110840, People's Republic of China; Department of Traditional Chinese Medicine, Shenyang Pharmaceutical University, Shenyang, 110016, People's Republic of China
| | - Yue Yang
- Department of Pharmacy, General Hospital of Northern Theater Command, Shenyang, 110840, People's Republic of China; Department of Life Sciences and Biopharmaceutics, Shenyang Pharmaceutical University, Shenyang, 110016, People's Republic of China
| | - Wen-Wu Liu
- Department of Pharmacy, General Hospital of Northern Theater Command, Shenyang, 110840, People's Republic of China; Department of Traditional Chinese Medicine, Shenyang Pharmaceutical University, Shenyang, 110016, People's Republic of China
| | - Zi-Hua Xu
- Department of Pharmacy, General Hospital of Northern Theater Command, Shenyang, 110840, People's Republic of China.
| | - Qing-Chun Zhao
- Department of Pharmacy, General Hospital of Northern Theater Command, Shenyang, 110840, People's Republic of China.
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15
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Abdulwanis Mohamed Z, Mohamed Eliaser E, Jaafaru MS, Nordin N, Ioannides C, Abdull Razis AF. Neuroprotective Effects of 7-Geranyloxycinnamic Acid from Melicope lunu ankenda Leaves. Molecules 2020; 25:E3724. [PMID: 32824120 PMCID: PMC7463604 DOI: 10.3390/molecules25163724] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Revised: 07/25/2020] [Accepted: 07/27/2020] [Indexed: 12/13/2022] Open
Abstract
Neurodegenerative diseases (NDDs) are chronic conditions that have drawn robust interest from the scientific community. Phytotherapeutic agents are becoming an important source of chemicals for the treatment and management of NDDs. Various secondary metabolites have been isolated from Melicope lunu-ankenda plant leaves, including phenolic acid derivatives. However, their neuroprotective activity remains unclear. Thus, the aim of this study is to elucidate the in vitro neuroprotective activity of 7-geranyloxycinnamic acid isolated from Melicope lunu-ankenda leaves. The neuroprotective activity was evaluated in differentiated human neuroblastoma (SH-SY5Y) cells by monitoring cell viability using 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT). Moreover, the potential to impair apoptosis in differentiated cells was investigated employing the Annexin V-FITC assay, acridine orange and propidium iodide (AO/PI) staining, and fluorescence microscopy. Morphological assessment and ultrastructural analysis were performed using scanning and transmission electron microscopy to evaluate the effect of 7-geranyloxycinnamic acid on surface morphology and internal features of the differentiated cells. Pre-treatment of neuronal cells with 7-geranyloxycinnamic acid significantly protected the differentiated SH-SY5Y cells against H2O2-induced apoptosis. Cytoskeleton and cytoplasmic inclusion were similarly protected by the 7-geranyloxycinnamic acid treatment. The present findings demonstrate the neuroprotective potential of 7-geranyloxycinnamic acid against H2O2-induced neurotoxicity in neuronal cells, which is an established hallmark of neuronal disorders.
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Affiliation(s)
- Zeinab Abdulwanis Mohamed
- Natural Medicines and Products Research Laboratory, Institute of Bioscience, Universiti Putra Malaysia, UPM Serdang 43400, Selangor, Malaysia; (Z.A.M.); (E.M.E.)
| | - Enas Mohamed Eliaser
- Natural Medicines and Products Research Laboratory, Institute of Bioscience, Universiti Putra Malaysia, UPM Serdang 43400, Selangor, Malaysia; (Z.A.M.); (E.M.E.)
- Department of Biology, Faculty of Science, El-Mergib University, El Khums, Libya
| | - Mohammed Sani Jaafaru
- Department of Biochemistry, Kaduna State University, Main Campus, Kaduna PMB 2339, Nigeria;
| | - Norshariza Nordin
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, UPM Serdang 43400, Selangor, Malaysia;
| | - Costas Ioannides
- Faculty of Health and Medical Sciences, University of Surrey, Guildford, Surrey GU2 7XH, UK;
| | - Ahmad Faizal Abdull Razis
- Natural Medicines and Products Research Laboratory, Institute of Bioscience, Universiti Putra Malaysia, UPM Serdang 43400, Selangor, Malaysia; (Z.A.M.); (E.M.E.)
- Laboratory of Food Safety and Food Integrity, Institute of Tropical Agriculture and Food Security, Universiti Putra Malaysia, UPM Serdang 43400, Selangor, Malaysia
- Department of Food Science, Faculty of Food Science and Technology, Universiti Putra Malaysia, UPM Serdang 43400, Selangor, Malaysia
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16
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Lee CL, Lo PT, Jhan YL, Chen CJ, Chang YS. New ent-kauran diterpene and antioxidant components from the seed of Ipomoea nil. Nat Prod Res 2019; 35:2551-2557. [PMID: 31691585 DOI: 10.1080/14786419.2019.1686373] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
One new ent-kauran diterpene, 7β,16β,17-trihydroxy ent-kauran 19-(6β)-olide (1), along with eight known compounds were isolated from the seed of Ipomoea nil. Isolates caffeoylquinic acid derivatives 5-9 were found for the first time in this species. All structures were identified from various spectroscopic data. trans-Caffeic acid 3, phenylpropanoid 4, and caffeoylquinic acid derivatives 5-9 could inhibit ROS generations induced in human keratinocyte HaCaT cells with IC50 values of 0.94-28.40 μM. Compounds 3 and 5-9 also had DPPH free radical scavenging properties (IC50 values, 14.86-68.27 μM), however, isolate 4 did not show inhibition effect. Generally, I. nil and its secondary metabolites 3-9 could be further applied for oxidative stress damage resulted in skin disorders.
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Affiliation(s)
- Chia-Lin Lee
- Department of Cosmeceutics, China Medical University, Taichung, Taiwan.,Chinese Medicine Research and Development Center, China Medical University Hospital, Taichung, Taiwan.,Chinese Medicine Research Center, China Medical University, Taichung, Taiwan
| | - Pei-Ting Lo
- Department of Cosmeceutics, China Medical University, Taichung, Taiwan
| | - Yun-Lian Jhan
- Department of Cosmeceutics, China Medical University, Taichung, Taiwan
| | - Chao-Jung Chen
- Graduate Institute of Integrated Medicine, China Medical University, Taichung, Taiwan.,Proteomics Core Laboratory, Department of Medical Research, China Medical University Hospital, Taichung, Taiwan
| | - Yuan-Shiun Chang
- Department of Chinese Pharmaceutical Sciences and Chinese Medicine Resources, China Medical University, Taichung, Taiwan
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17
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Kim KB, Lee S, Kim JH. Neuroprotective effects of urolithin A on H 2O 2-induced oxidative stress-mediated apoptosis in SK-N-MC cells. Nutr Res Pract 2019; 14:3-11. [PMID: 32042368 PMCID: PMC6997143 DOI: 10.4162/nrp.2020.14.1.3] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Revised: 07/11/2019] [Accepted: 09/06/2019] [Indexed: 01/04/2023] Open
Abstract
BACKGROUND/OBJECTIVES Oxidative stress causes cell damage and death, which contribute to the pathogenesis of neurodegenerative diseases. Urolithin A (UA), a gut microbial-derived metabolite of ellagitannins and ellagic acid, has high bioavailability and various health benefits such as antioxidant and anti-inflammatory effects. However, it is unknown whether it has protective effects against oxidative stress-induced cell death. We investigated whether UA ameliorates H2O2-induced neuronal cell death. MATERIALS/METHODS We induced oxidative damage with 300 µM H2O2 after UA pretreatment at concentrations of 1.25, 2.5, and 5 µM in SK-N-MC cells. Cytotoxicity and cell viability were determined using the CCK-8 assay. The formation of reactive oxygen species (ROS) was measured using a 2,7-dichlorofluorescein diacetate assay. Hoechst 33342 staining was used to characterize morphological changes in apoptotic cells. The expressions of apoptosis proteins were measured using Western blotting. RESULTS UA significantly increased cell viability and decreased intracellular ROS production in a dose-dependent manner in SK-N-MC cells. It also decreased the Bax/Bcl-2 ratio and the expressions of cytochrome c, cleaved caspase-9, cleaved caspase-3, and cleaved PARP. In addition, it suppressed the phosphorylation of the p38 mitogen-activated protein kinase (MAPK) pathway. CONCLUSIONS UA attenuates oxidative stress-induced apoptosis via inhibiting the mitochondrial-related apoptosis pathway and modulating the p38 MAPK pathway, suggesting that it may be an effective neuroprotective agent.
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Affiliation(s)
- Kkot Byeol Kim
- Research Institute, Seoul Medical Center, Seoul 02053, Korea
| | - Seonah Lee
- Research Institute, Seoul Medical Center, Seoul 02053, Korea
| | - Jung Hee Kim
- Research Institute, Seoul Medical Center, Seoul 02053, Korea.,Department of Neurosurgery, Seoul Medical Center, 156 Shinnea-ro, Seoul 02053, Korea
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18
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Abdulwanis Mohamed Z, Mohamed Eliaser E, Mazzon E, Rollin P, Cheng Lian Ee G, Abdull Razis AF. Neuroprotective Potential of Secondary Metabolites from Melicope lunu-ankenda (Rutaceae). Molecules 2019; 24:E3109. [PMID: 31461914 PMCID: PMC6749319 DOI: 10.3390/molecules24173109] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2019] [Revised: 07/16/2019] [Accepted: 07/19/2019] [Indexed: 12/12/2022] Open
Abstract
Plant natural compounds have great potential as alternative medicines for preventing and treating diseases. Melicope lunu-ankenda is one Melicope species (family Rutaceae), which is widely used in traditional medicine, consumed as a salad and a food seasoning. Consumption of different parts of this plant has been reported to exert different biological activities such as antioxidant and anti-inflammatory qualities, resulting in a protective effect against several health disorders including neurodegenerative diseases. Various secondary metabolites such as phenolic acid derivatives, flavonoids, coumarins and alkaloids, isolated from the M. lunu-ankenda plant, were demonstrated to have neuroprotective activities and also exert many other beneficial biological effects. A number of studies have revealed different neuroprotective mechanisms for these secondary metabolites. This review summarizes the most significant and recent studies for neuroprotective activity of M. lunu-ankenda major secondary metabolites in neurodegenerative diseases.
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Affiliation(s)
- Zeinab Abdulwanis Mohamed
- Laboratory of Molecular Biomedicine, Institute of Bioscience, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
| | - Enas Mohamed Eliaser
- Laboratory of Molecular Biomedicine, Institute of Bioscience, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
- Department of Biology, Faculty of Science, El-Mergib University, El Khums, Libya
| | - Emanuela Mazzon
- IRCCS Centro Neurolesi "Bonino-Pulejo", Via Provinciale Palermo, Contrada Casazza, 98124 Messina, Italy
| | - Patrick Rollin
- Université d'Orléans et CNRS, ICOA, UMR 7311, BP 6759, F-45067 Orléans, France
| | - Gwendoline Cheng Lian Ee
- Chemistry Department, Faculty of Science, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
| | - Ahmad Faizal Abdull Razis
- Laboratory of Molecular Biomedicine, Institute of Bioscience, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia.
- Laboratory of Food Safety and Food Integrity, Institute of Tropical Agriculture and Food Security, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia.
- Department of Food Science, Faculty of Food Science and Technology, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia.
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19
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Wang W, Yao GD, Shang XY, Zhang YY, Song XY, Hayashi T, Zhang Y, Song SJ. Eclalbasaponin I causes mitophagy to repress oxidative stress-induced apoptosis via activation of p38 and ERK in SH-SY5Y cells. Free Radic Res 2019; 53:655-668. [DOI: 10.1080/10715762.2019.1620937] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Wei Wang
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, China
- Key Laboratory of Computational Chemistry-Based Natural Antitumor Drug Research & Development, Shenyang Pharmaceutical University, Shenyang, China
| | - Guo-Dong Yao
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, China
- Key Laboratory of Computational Chemistry-Based Natural Antitumor Drug Research & Development, Shenyang Pharmaceutical University, Shenyang, China
| | - Xin-Yue Shang
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, China
- Key Laboratory of Computational Chemistry-Based Natural Antitumor Drug Research & Development, Shenyang Pharmaceutical University, Shenyang, China
| | - Ying-Ying Zhang
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, China
- Key Laboratory of Computational Chemistry-Based Natural Antitumor Drug Research & Development, Shenyang Pharmaceutical University, Shenyang, China
| | - Xiao-Yu Song
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, China
- Key Laboratory of Computational Chemistry-Based Natural Antitumor Drug Research & Development, Shenyang Pharmaceutical University, Shenyang, China
| | - Toshihiko Hayashi
- Key Laboratory of Computational Chemistry-Based Natural Antitumor Drug Research & Development, Shenyang Pharmaceutical University, Shenyang, China
- China-Japan Research Institute of Medical and Pharmaceutical Sciences, Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang, China
- Department of Chemistry and Life Science, School of Advanced Engineering, Kogakuin University, Hachioji, Japan
| | - Yan Zhang
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, China
- Key Laboratory of Computational Chemistry-Based Natural Antitumor Drug Research & Development, Shenyang Pharmaceutical University, Shenyang, China
| | - Shao-Jiang Song
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, China
- Key Laboratory of Computational Chemistry-Based Natural Antitumor Drug Research & Development, Shenyang Pharmaceutical University, Shenyang, China
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20
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Zhou L, Yao GD, Lu LW, Song XY, Lin B, Wang XB, Huang XX, Song SJ. Neolignans from Red Raspberry ( Rubus idaeus L.) Exhibit Enantioselective Neuroprotective Effects against H 2O 2-Induced Oxidative Injury in SH-SY5Y Cells. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:11390-11397. [PMID: 30346163 DOI: 10.1021/acs.jafc.8b03725] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Red raspberry has been well-known for its nutritional purpose. Although this fruit has been reported for its potent antioxidant activity and health-promoting properties, systematic studies responsible for the bioactive constituents were still insufficient. In the current study, three pairs of dihydrobenzofuran-type enantiomeric neolignans (1a/1b-3a/3b), including two new compounds (1b and 2a), were isolated from the fruit of Rubus idaeus. The structures of these enantiomers were determined through spectroscopic methods and quantum mechanical calculations. Biologically, enantiomers 2a and 2b exhibited significant enantioselective protective effects against H2O2-induced neurotoxicity at 50 μM (2a, 86.72 ± 1.17%; 2b, 69.70 ± 1.59%). The underlying mechanism study demonstrated that enantiomer 2a is able to attenuate H2O2-induced apoptosis, reactive oxygen species (ROS) generation, and mitochondrial dysfunction in SH-SY5Y cells. Overall, these findings provide a valuable foundation for the understanding of neuroprotective activities of red raspberry and further investigation on its potential application values.
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Affiliation(s)
| | | | | | | | | | - Xiao-Bo Wang
- Chinese People's Liberation Army 210 Hospital , Dalian , Liaoning 116021 , People's Republic of China
| | - Xiao-Xiao Huang
- Chinese People's Liberation Army 210 Hospital , Dalian , Liaoning 116021 , People's Republic of China
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21
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Kim KB, Lee S, Kang I, Kim JH. Momordica charantia Ethanol Extract Attenuates H₂O₂-Induced Cell Death by Its Antioxidant and Anti-Apoptotic Properties in Human Neuroblastoma SK-N-MC Cells. Nutrients 2018; 10:nu10101368. [PMID: 30249986 PMCID: PMC6213776 DOI: 10.3390/nu10101368] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2018] [Revised: 09/20/2018] [Accepted: 09/22/2018] [Indexed: 01/29/2023] Open
Abstract
Oxidative stress, which is induced by reactive oxygen species (ROS), causes cellular damage which contributes to the pathogenesis of neurodegenerative diseases. Momordica charantia (MC), a traditional medicinal plant, is known to have a variety of health benefits, such as antidiabetic, anti-inflammatory, and antioxidant effects. However, it is unknown whether MC has protective effects against oxidative stress-induced neuronal cell death. The aim of this study was to investigate the potential action of MC on oxidative stress induced by H2O2. First, we tested whether the pretreatment of Momordica charantia ethanol extract (MCEE) attenuates H2O2-induced cell death in human neuroblastoma SK-N-MC cells. MCEE pretreatment significantly improved cell viability and apoptosis that deteriorated by H2O2. Further, MCEE ameliorated the imbalance between intracellular ROS production and removal through the enhancement of the intracellular antioxidant system. Intriguingly, the inhibition of apoptosis was followed by the blockage of mitochondria-dependent cell death cascades and suppression of the phosphorylation of the mitogen-activated protein kinase signaling (MAPKs) pathway by MCEE. Taken together, MCEE was shown to be effective in protecting against H2O2-induced cell death through its antioxidant and anti-apoptotic properties.
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Affiliation(s)
- Kkot Byeol Kim
- Research Institute, Seoul Medical Center, Seoul 02053, Korea.
| | - SeonAh Lee
- Research Institute, Seoul Medical Center, Seoul 02053, Korea.
| | - Inhae Kang
- Department of Food Science and Nutrition, Jeju National University, Jeju 63243, Korea.
| | - Jung-Hee Kim
- Research Institute, Seoul Medical Center, Seoul 02053, Korea.
- Department of Neurosurgery, Seoul Medical Center, Seoul 02053, Korea.
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22
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Fu C, Wang Q, Zhai X, Gao J. Sinomenine reduces neuronal cell apoptosis in mice after traumatic brain injury via its effect on mitochondrial pathway. DRUG DESIGN DEVELOPMENT AND THERAPY 2018; 12:77-84. [PMID: 29379271 PMCID: PMC5759853 DOI: 10.2147/dddt.s154391] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Background Sinomenine (SIN) has been shown to have protective effects against brain damage following traumatic brain injury (TBI). However, the mechanisms and its role in these effects remain unclear. This study was conducted to investigate the potential mechanisms of the protective effects of SIN. Methods The weight-drop model of TBI in Institute of Cancer Research (ICR) mice were treated with SIN or a vehicle via intraperitoneal administration 30 min after TBI. All mice were euthanized 24 h after TBI and after neurological scoring, a series of tests were performed, including brain water content and neuronal cell death in the cerebral cortex. Results The level of cytochrome c (Cyt c), malondialdehyde (MDA), glutathione peroxidase (GPx) and superoxide dismutase 1 (SOD) were restored to some degree following the SIN treatment. The SIN treatment significantly decreased caspase-3 expression and reduced the number of positive cells by terminal deoxynucleotidyl transferase-mediated dUTP nick end-labeling (TUNEL) assay and improved the survival of neuronal cells. Additionally, the pretreatment levels of MDA were restored, while Bax translocation to mitochondria and Cyt c release into the cytosol were reduced by the SIN treatment. Conclusion SIN protected neuronal cells by protecting them against apoptosis via mechanisms that involve the mitochondria following TBI.
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Affiliation(s)
- Chuanjing Fu
- Department of Neurosurgery, Jiangsu Hospital of Traditional Chinese Medicine, Nanjing
| | - Qi Wang
- Department of Radiology, The Fourth People's Hospital of Huai'an
| | - Xiaofu Zhai
- Department of Neurosurgery, The Second People's Hospital of Huai'an, Xuzhou Medical College, Huai'an, People's Republic of China
| | - Juemin Gao
- Department of Neurosurgery, Jiangsu Hospital of Traditional Chinese Medicine, Nanjing
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23
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Zhou L, Lou LL, Wang W, Lin B, Chen JN, Wang XB, Huang XX, Song SJ. Enantiomeric 8-O-4′ type neolignans from red raspberry as potential inhibitors of β-amyloid aggregation. J Funct Foods 2017. [DOI: 10.1016/j.jff.2017.08.007] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
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24
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Gray NE, Zweig JA, Murchison C, Caruso M, Matthews DG, Kawamoto C, Harris CJ, Quinn JF, Soumyanath A. Centella asiatica attenuates Aβ-induced neurodegenerative spine loss and dendritic simplification. Neurosci Lett 2017; 646:24-29. [PMID: 28279707 DOI: 10.1016/j.neulet.2017.02.072] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2016] [Revised: 02/21/2017] [Accepted: 02/27/2017] [Indexed: 01/13/2023]
Abstract
The medicinal plant Centella asiatica has long been used to improve memory and cognitive function. We have previously shown that a water extract from the plant (CAW) is neuroprotective against the deleterious cognitive effects of amyloid-β (Aβ) exposure in a mouse model of Alzheimer's disease, and improves learning and memory in healthy aged mice as well. This study explores the physiological underpinnings of those effects by examining how CAW, as well as chemical compounds found within the extract, modulate synaptic health in Aβ-exposed neurons. Hippocampal neurons from amyloid precursor protein over-expressing Tg2576 mice and their wild-type (WT) littermates were used to investigate the effect of CAW and various compounds found within the extract on Aβ-induced dendritic simplification and synaptic loss. CAW enhanced arborization and spine densities in WT neurons and prevented the diminished outgrowth of dendrites and loss of spines caused by Aβ exposure in Tg2576 neurons. Triterpene compounds present in CAW were found to similarly improve arborization although they did not affect spine density. In contrast caffeoylquinic acid (CQA) compounds from CAW were able to modulate both of these endpoints, although there was specificity as to which CQAs mediated which effect. These data suggest that CAW, and several of the compounds found therein, can improve dendritic arborization and synaptic differentiation in the context of Aβ exposure which may underlie the cognitive improvement observed in response to the extract in vivo. Additionally, since CAW, and its constituent compounds, also improved these endpoints in WT neurons, these results may point to a broader therapeutic utility of the extract beyond Alzheimer's disease.
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Affiliation(s)
- Nora E Gray
- Department of Neurology, Oregon Health and Science University, Portland, OR 97239, USA.
| | - Jonathan A Zweig
- Department of Cell, Developmental and Cancer Biology, Oregon Health and Science University, Portland, OR 97239, USA
| | - Charles Murchison
- Department of Neurology, Oregon Health and Science University, Portland, OR 97239, USA
| | - Maya Caruso
- Department of Neurology, Oregon Health and Science University, Portland, OR 97239, USA
| | - Donald G Matthews
- Department of Neurology, Oregon Health and Science University, Portland, OR 97239, USA
| | - Colleen Kawamoto
- Department of Cell, Developmental and Cancer Biology, Oregon Health and Science University, Portland, OR 97239, USA
| | - Christopher J Harris
- Department of Neurology, Oregon Health and Science University, Portland, OR 97239, USA
| | - Joseph F Quinn
- Department of Neurology, Oregon Health and Science University, Portland, OR 97239, USA; Department of Neurology and Parkinson's Disease Research Education and Clinical Care Center (PADRECC), Portland Veterans Affairs Medical Center, Portland, OR 97239, USA
| | - Amala Soumyanath
- Department of Neurology, Oregon Health and Science University, Portland, OR 97239, USA
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