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Nguyen-Thi PT, Vo TK, Pham THT, Nguyen TT, Van Vo G. Natural flavonoids as potential therapeutics in the management of Alzheimer's disease: a review. 3 Biotech 2024; 14:68. [PMID: 38357675 PMCID: PMC10861420 DOI: 10.1007/s13205-024-03925-8] [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: 11/21/2023] [Accepted: 01/05/2024] [Indexed: 02/16/2024] Open
Abstract
Alzheimer's disease (AD) is an age-dependent neurodegenerative disorder which is associated with the accumulation of proteotoxic Aβ peptides, and pathologically characterized by the deposition of Aβ-enriched plaques and neurofibrillary tangles. Given the social and economic burden caused by the rising frequency of AD, there is an urgent need for the development of appropriate therapeutics. Natural compounds are gaining popularity as alternatives to synthetic drugs due to their neuroprotective properties and higher biocompatibility. While natural compound's therapeutic effects for AD have been recently investigated in numerous in vitro and in vivo studies, only few have developed to clinical trials. The present review aims to provide a brief overview of the therapeutic effects, new insights, and upcoming perspectives of the preclinical and clinical trials of flavonoids for the treatment of Alzheimer's disease.
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Affiliation(s)
| | - Tuong Kha Vo
- Department of Sports Medicine, Faculty of Medicine, VNU University of Medicine and Pharmacy, Vietnam National University, Hanoi, 100000 Vietnam
| | - Thi Hong Trang Pham
- Institute for Global Health Innovations, Duy Tan University, Da Nang, 550000 Vietnam
- Faculty of Pharmacy, Duy Tan University, Da Nang, 550000 Vietnam
| | - Thuy Trang Nguyen
- Faculty of Chemical Engineering, Industrial University of Ho Chi Minh City, Ho Chi Minh City, 71420 Vietnam
| | - Giau Van Vo
- Department of Biomedical Engineering, School of Medicine, Vietnam National University – Ho Chi Minh City (VNU-HCM), Ho Chi Minh City, 700000 Vietnam
- Research Center for Genetics and Reproductive Health (CGRH), School of Medicine, Vietnam National University, Ho Chi Minh City (VNU-HCM), Ho Chi Minh City, 70000 Vietnam
- Vietnam National University – Ho Chi Minh City (VNU-HCM), Ho Chi Minh City, 700000 Vietnam
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Suganuma T, Hatori S, Chen CK, Hori S, Kanuka M, Liu CY, Tatsuzawa C, Yanagisawa M, Hayashi Y. Caffeoylquinic Acid Mitigates Neuronal Loss and Cognitive Decline in 5XFAD Mice Without Reducing the Amyloid-β Plaque Burden. J Alzheimers Dis 2024; 99:1285-1301. [PMID: 38788074 DOI: 10.3233/jad-240033] [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] [Indexed: 05/26/2024]
Abstract
Background Caffeoylquinic acid (CQA), which is abundant in coffee beans and Centella asiatica, reportedly improves cognitive function in Alzheimer's disease (AD) model mice, but its effects on neuroinflammation, neuronal loss, and the amyloid-β (Aβ) plaque burden have remained unclear. Objective To assess the effects of a 16-week treatment with CQA on recognition memory, working memory, Aβ levels, neuronal loss, neuroinflammation, and gene expression in the brains of 5XFAD mice, a commonly used mouse model of familial AD. Methods 5XFAD mice at 7 weeks of age were fed a 0.8% CQA-containing diet for 4 months and then underwent novel object recognition (NOR) and Y-maze tests. The Aβ levels and plaque burden were analyzed by enzyme-linked immunosorbent assay and immunofluorescent staining, respectively. Immunostaining of markers of mature neurons, synapses, and glial cells was analyzed. AmpliSeq transcriptome analysis and quantitative reverse-transcription-polymerase chain reaction were performed to assess the effect of CQA on gene expression levels in the cerebral cortex of the 5XFAD mice. Results CQA treatment for 4 months improved recognition memory and ameliorated the reduction of mature neurons and synaptic function-related gene mRNAs. The Aβ levels, plaque burden, and glial markers of neuroinflammation seemed unaffected. Conclusions These findings suggest that CQA treatment mitigates neuronal loss and improves cognitive function without reducing Aβ levels or neuroinflammation. Thus, CQA is a potential therapeutic compound for AD, improving cognitive function via as-yet unknown mechanisms independent of reductions in Aβ or neuroinflammation.
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Affiliation(s)
- Takaya Suganuma
- International Institute for Integrative Sleep Medicine (WPI-IIIS), University of Tsukuba, Tsukuba, Japan
- Biological Science Research Laboratories, Kao Corporation, Ichikai, Japan
| | - Sena Hatori
- International Institute for Integrative Sleep Medicine (WPI-IIIS), University of Tsukuba, Tsukuba, Japan
| | - Chung-Kuan Chen
- International Institute for Integrative Sleep Medicine (WPI-IIIS), University of Tsukuba, Tsukuba, Japan
| | - Satoshi Hori
- Biological Science Research Laboratories, Kao Corporation, Ichikai, Japan
| | - Mika Kanuka
- International Institute for Integrative Sleep Medicine (WPI-IIIS), University of Tsukuba, Tsukuba, Japan
| | - Chih-Yao Liu
- International Institute for Integrative Sleep Medicine (WPI-IIIS), University of Tsukuba, Tsukuba, Japan
| | - Chika Tatsuzawa
- International Institute for Integrative Sleep Medicine (WPI-IIIS), University of Tsukuba, Tsukuba, Japan
| | - Masashi Yanagisawa
- International Institute for Integrative Sleep Medicine (WPI-IIIS), University of Tsukuba, Tsukuba, Japan
- Department of Molecular Genetics, University of Texas Southwestern Medical Center, Dallas, TX, USA
- Life Science Center for Survival Dynamics (TARA), University of Tsukuba, Tsukuba, Japan
- R&D Center for Frontiers of Mirai in Policy and Technology (F-MIRAI), University of Tsukuba, Tsukuba, Japan
| | - Yu Hayashi
- International Institute for Integrative Sleep Medicine (WPI-IIIS), University of Tsukuba, Tsukuba, Japan
- Department of Biological Sciences, Graduate School of Science, University of Tokyo, Tokyo, Japan
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Güven A, Bilgici Cengiz G, Çağlar İ, Ateş S. Evaluation of radioactivity levels and radiological hazards of some endemic plants used as medicine in Ankara, Turkey. Appl Radiat Isot 2023; 200:110939. [PMID: 37536028 DOI: 10.1016/j.apradiso.2023.110939] [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: 03/19/2023] [Revised: 07/01/2023] [Accepted: 07/07/2023] [Indexed: 08/05/2023]
Abstract
In this study, natural radioactivity levels (226Ra, 232Th, and 4 K) of some medicinal plant samples with known anti-oxidative properties, which are frequently consumed by animals and humans, were obtained from Ankara province and its surroundings (Mamak, Kızılcahamam, Beypazarı, Kahramankazan, and Polatlı districts) were determined using a thallium-doped sodium iodide NaI(Tl) gamma spectrometry. By using the determined natural radioactivity concentrations in the collected plant samples, the number of radiological doses that people could be exposed by consuming these plants was calculated. As a result of the study, 226Ra, 232Th, and 4 K radioactivity concentration ranges of the plant samples were found be 14.69 ± 1.27-59.08 ± 3.12 Bq kg-1, 1.78 ± 0.04-50.05 ± 2.76 Bq kg-1 and 207.24 ± 34.09-826.13 ± 25.40 Bq kg-1, respectively. The highest 226Ra, 232Th, and 4 K activity concentrations were measured in Astragalus densifolius subsp. ayashensis (Kahramankazan), Astragalus kochakii (Kahramankazan) and Rumex patientia (Patience Dock) (Kahramankazan) plants, respectively. The lowest 226Ra, 232Th and,4 K activity concentration plants were determined respectively as Rumex patientia (Mamak), Lavandula angustifolia (Kızılcahamam), and Astragalus acikirensis (Polatlı). The establishment and routine repetition of environmental radioactivity monitoring programs in each region are important for human and animal health, and the results of this study gain importance for Ankara and its surroundings in terms of environmental health.
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Affiliation(s)
- Aysel Güven
- Başkent University, Vocational School of Healthcare Services, Ankara, Turkey.
| | - Gülçin Bilgici Cengiz
- Department of Physics, Faculty of Science and Letters, Kafkas University, Kars, Turkey.
| | - İlyas Çağlar
- Department of Electricity and Energy, Kazım Karabekir Vocational School of Technical Sciences, Kafkas University, Kars, Turkey.
| | - Simge Ateş
- Başkent University, Vocational School of Healthcare Services, Ankara, Turkey.
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Crosstalk between neurological, cardiovascular, and lifestyle disorders: insulin and lipoproteins in the lead role. Pharmacol Rep 2022; 74:790-817. [PMID: 36149598 DOI: 10.1007/s43440-022-00417-5] [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: 07/31/2022] [Revised: 09/03/2022] [Accepted: 09/08/2022] [Indexed: 10/14/2022]
Abstract
Insulin resistance and impaired lipoprotein metabolism contribute to a plethora of metabolic and cardiovascular disorders. These alterations have been extensively linked with poor lifestyle choices, such as consumption of a high-fat diet, smoking, stress, and a redundant lifestyle. Moreover, these are also known to increase the co-morbidity of diseases like Type 2 diabetes mellitus and atherosclerosis. Under normal physiological conditions, insulin and lipoproteins exert a neuroprotective role in the central nervous system. However, the tripping of balance between the periphery and center may alter the normal functioning of the brain and lead to neurological disorders such as Alzheimer's disease, Parkinson's disease, stroke, depression, and multiple sclerosis. These neurological disorders are further characterized by certain behavioral and molecular changes that show consistent overlap with alteration in insulin and lipoprotein signaling pathways. Therefore, targeting these two mechanisms not only reveals a way to manage the co-morbidities associated with the circle of the metabolic, central nervous system, and cardiovascular disorders but also exclusively work as a disease-modifying therapy for neurological disorders. In this review, we summarize the role of insulin resistance and lipoproteins in the progression of various neurological conditions and discuss the therapeutic options currently in the clinical pipeline targeting these two mechanisms; in addition, challenges faced in designing these therapeutic approaches have also been touched upon briefly.
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Calycosin Alleviates Paraquat-Induced Neurodegeneration by Improving Mitochondrial Functions and Regulating Autophagy in a Drosophila Model of Parkinson's Disease. Antioxidants (Basel) 2022; 11:antiox11020222. [PMID: 35204105 PMCID: PMC8868496 DOI: 10.3390/antiox11020222] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2021] [Revised: 01/13/2022] [Accepted: 01/20/2022] [Indexed: 12/12/2022] Open
Abstract
Parkinson's disease (PD) is the second most common age-related neurodegenerative disorder with limited clinical treatments. The occurrence of PD includes both genetic and environmental toxins, such as the pesticides paraquat (PQ), as major contributors to PD pathology in both invertebrate and mammalian models. Calycosin, an isoflavone phytoestrogen, has multiple pharmacological properties, including neuroprotective activity. However, the paucity of information regarding the neuroprotective potential of calycosin on PQ-induced neurodegeneration led us to explore whether calycosin can mitigate PD-like phenotypes and the underlying molecular mechanisms. We used a PQ-induced PD model in Drosophila as a cost-effective in vivo screening platform to investigate the neuroprotective efficacy of natural compounds on PD. We reported that calycosin shows a protective role in preventing dopaminergic (DA) neuronal cell death in PQ-exposed Canton S flies. Calycosin-fed PQ-exposed flies exhibit significant resistance against PQ-induced mortality and locomotor deficits in terms of reduced oxidative stress, loss of DA neurons, the depletion of dopamine content, and phosphorylated JNK-caspase-3 levels. Additionally, mechanistic studies show that calycosin administration improves PQ-induced mitochondrial dysfunction and stimulates mitophagy and general autophagy with reduced pS6K and p4EBP1 levels, suggestive of a maintained energy balance between anabolic and catabolic processes, resulting in the inhibition of neuronal cell death. Collectively, this study substantiates the protective effect of calycosin against PQ-induced neurodegeneration by improving DA neurons' survival and reducing apoptosis, likely via autophagy induction, and it is implicated as a novel therapeutic application against toxin-induced PD pathogenesis.
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Das M, Jaya Balan D, Kasi PD. Mitigation of oxidative stress with dihydroactinidiolide, a natural product against scopolamine-induced amnesia in Swiss albino mice. Neurotoxicology 2021; 86:149-161. [PMID: 34371027 DOI: 10.1016/j.neuro.2021.08.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2021] [Revised: 08/04/2021] [Accepted: 08/04/2021] [Indexed: 10/20/2022]
Abstract
The present work describes the neuroprotective efficacy of DHAc under escalated oxidative stress condition in scopolamine-induced amnesic mice. During the toxicity test of DHAc in mice, the acute dose (LD50) is found to be 3.468 mg/kg bw and the sub-acute dose is 0.68 mg/kg bw. Improved cognitive and learning abilities are observed in Morris water maze and Y-maze test in 10 days DHAc (0.68 mg/kg bw) treated scopolamine-induced male Swiss albino mice. In the molecular level these changes are monitored as reduced oxidative load followed by significantly lower lipid peroxidation and protein carbonylation, increased superoxide dismutase, catalase, acetylcholinesterase, caspase-3 activity and glutathione content followed by higher expression of anti apoptotic protein bcl-2 in mice brain as compared to scopolamine (1 mg/kg bw) treated mice. Meanwhile real time PCR shows higher expression of brain derived neurotrophic factor (BDNF) and synaptophysin in DHAc pretreated scopolamine treated mice brain. HPLC analysis suggested its possible blood brain barrier crossing ability. Overall DHAc reversed behavioral anomalies in the scopolamine treated mice via oxidative stress quenching, enhancing antioxidative enzyme activity, enhancing BDNF and synaptophysin mRNA levels and reducing expression of apoptotic protein Bax.
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Affiliation(s)
- Mamali Das
- Department of Biotechnology, Alagappa University (Science Campus), Karaikudi, 630003, TN, India
| | - Devasahayam Jaya Balan
- Department of Biotechnology, Alagappa University (Science Campus), Karaikudi, 630003, TN, India
| | - Pandima Devi Kasi
- Department of Biotechnology, Alagappa University (Science Campus), Karaikudi, 630003, TN, India.
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Hole KL, Williams RJ. Flavonoids as an Intervention for Alzheimer's Disease: Progress and Hurdles Towards Defining a Mechanism of Action. Brain Plast 2021; 6:167-192. [PMID: 33782649 PMCID: PMC7990465 DOI: 10.3233/bpl-200098] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Attempts to develop a disease modifying intervention for Alzheimer's disease (AD) through targeting amyloid β (Aβ) have so far been unsuccessful. There is, therefore, a need for novel therapeutics against alternative targets coupled with approaches which may be suitable for early and sustained use likely required for AD prevention. Numerous in vitro and in vivo studies have shown that flavonoids can act within processes and pathways relevant to AD, such as Aβ and tau pathology, increases in BDNF, inflammation, oxidative stress and neurogenesis. However, the therapeutic development of flavonoids has been hindered by an ongoing lack of clear mechanistic data that fully takes into consideration metabolism and bioavailability of flavonoids in vivo. With a focus on studies that incorporate these considerations into their experimental design, this review will evaluate the evidence for developing specific flavonoids as therapeutics for AD. Given the current lack of success of anti-Aβ targeting therapeutics, particular attention will be given to flavonoid-mediated regulation of tau phosphorylation and aggregation, where there is a comparable lack of study. Reflecting on this evidence, the obstacles that prevent therapeutic development of flavonoids will be examined. Finally, the significance of recent advances in flavonoid metabolomics, modifications and influence of the microbiome on the therapeutic capacity of flavonoids in AD are explored. By highlighting the potential of flavonoids to target multiple aspects of AD pathology, as well as considering the hurdles, this review aims to promote the efficient and effective identification of flavonoid-based approaches that have potential as therapeutic interventions for AD.
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Affiliation(s)
- Katriona L. Hole
- Centre for Regenerative Medicine, Department of Biology and Biochemistry, University of Bath, UK
| | - Robert J. Williams
- Centre for Regenerative Medicine, Department of Biology and Biochemistry, University of Bath, UK
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Szwajgier D, Borowiec K, Zapp J. Activity-guided isolation of cholinesterase inhibitors quercetin, rutin and kaempferol from Prunus persica fruit. Z NATURFORSCH C 2020; 75:87-96. [PMID: 34432967 DOI: 10.1515/znc-2019-0079] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Accepted: 02/03/2020] [Indexed: 12/22/2022]
Abstract
Prunus persica fruit is a source of anti-cholinesterase agents and led to an increase of acetylcholine levels in brain tissue as a usefull tool in the Alzheimer's disease therapy. This study aimed to propose a convenient method for the purification of cholinesterase inhibitors from P. persica water extract. Water extract from the fruit was ultrafiltered (0.2 μm→5 kDa→3 kDa) followed by preparative chromatography (Sephadex LH-20, high pressure C18) and high pressure analytical C18 chromatography. The chemical structures of inhibitors were confirmed using infrared and 1H-NMR spectroscopies. The anti-acetylcholinesterase activity was measured using the colorimetric method in fractions obtained after each stage of purification. Polyphenolic cholinesterase inhibitors identified in peach fruit were kaempferol, quercetin and quercetin-3-O-rhamnoglucoside (rutin). The relatively fast purification procedure elaborated in this work can be adopted for the isolation of phenolic cholinesterase inhibitors from fruit extracts related to P. persica fruit.
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Affiliation(s)
- Dominik Szwajgier
- Department of Biotechnology, Microbiology and Human Nutrition, University of Life Sciences in Lublin, Skromna 8, 20-704 Lublin, Poland
| | - Kamila Borowiec
- Department of Biotechnology, Microbiology and Human Nutrition, University of Life Sciences in Lublin, Skromna 8, 20-704 Lublin, Poland
| | - Josef Zapp
- Institut für Pharmazeutische Biologie, Universität des Saarlandes, Campus C2 3, 66123 Saarbrücken, Germany
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Malik H, Javaid S, Fawad Rasool M, Samad N, Rizwan Ahamad S, Alqahtani F, Imran I. Amelioration of Scopolamine-Induced Amnesic, Anxiolytic and Antidepressant Effects of Ficus Benghalensis in Behavioral Experimental Models. MEDICINA (KAUNAS, LITHUANIA) 2020; 56:E144. [PMID: 32210162 PMCID: PMC7143763 DOI: 10.3390/medicina56030144] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Revised: 03/09/2020] [Accepted: 03/19/2020] [Indexed: 12/11/2022]
Abstract
Background and Objectives: Ficus benghalensis (FB) is a commonly found tree in Pakistan and its various parts have folkloric importance in managing neurological ailments. In the present study, methanolic extract of its bark has been tested on an experimental animal model to evaluate memory-enhancing, anxiolytic and antidepressant activities to validate the claimed therapeutic potential. Materials and Methods: Methanolic extract of freshly isolated bark was prepared and subjected to preliminary phytochemical studies and gas chromatography-mass spectrometry (GC-MS) analysis for the presence of phytocomponents. To evaluate its effect on spatial learning, passive-avoidance test-step through (PAT-ST), Y-maze and Morris water maze (MWM) tests were carried out. Open-field (OFT) and elevated plus maze (EPM) tests were employed to explore the anti-anxiety potential of FB while a forced swimming test (FST) was utilized to assess its anti-depressant prospective. FB doses of 100, 200 and 300 mg/kg with positive and negative controls given to Sprague Dawley (SD) rats. Results: phytochemical studies showed the presence of various phytoconstituents including alkaloids, flavonoids, terpenes, phenolics and anthraquinones. The presence of synephrine, aspargine, glucose, fructose and fatty acids was revealed by GC-MS analysis. FB administration led to significant improved memory retention when evaluated through passive avoidance (p < 0.05), Y-maze (p < 0.05) and Morris water maze (p < 0.05) tests in a scopolamine model of amnesic rats. When tested by open field and elevated plus maze tests, FB demonstrated anxiety-resolving characteristics (p < 0.05) as animals dared to stay in open areas more than a control group. Mobility time was increased and immobility time was reduced (p < 0.05-0.01) in rats treated with FB, unveiling the anti-depressant importance of F. benghalensis. Conclusion: methanolic extract of F. benghalensis bark furnished scientific proof behind folkloric claims of the memory improving, anxiety-reducing and depression-resolving characteristics of the plant. These activities might be possible due to interaction of its phytoconstituents with serotonergic, glutamatergic, cholinergic and GABAergic systems in the brain.
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Affiliation(s)
- Humna Malik
- Department of Pharmacology, Faculty of Pharmacy, Bahauddin Zakariya University, Multan 60800, Pakistan; (H.M.); (S.J.)
| | - Sana Javaid
- Department of Pharmacology, Faculty of Pharmacy, Bahauddin Zakariya University, Multan 60800, Pakistan; (H.M.); (S.J.)
- Department of Pharmacy, The Women University, Multan 60000, Pakistan
| | - Muhammad Fawad Rasool
- Department of Pharmacy Practice, Faculty of Pharmacy, Bahauddin Zakariya University, Multan 60800, Pakistan;
| | - Noreen Samad
- Department of Biochemistry, Faculty of Science, Bahauddin Zakariya University, Multan 60800, Pakistan;
| | - Syed Rizwan Ahamad
- Central laboratory, Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia;
| | - Faleh Alqahtani
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia
| | - Imran Imran
- Department of Pharmacology, Faculty of Pharmacy, Bahauddin Zakariya University, Multan 60800, Pakistan; (H.M.); (S.J.)
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Marvian AT, Koss DJ, Aliakbari F, Morshedi D, Outeiro TF. In vitro models of synucleinopathies: informing on molecular mechanisms and protective strategies. J Neurochem 2019; 150:535-565. [PMID: 31004503 DOI: 10.1111/jnc.14707] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2019] [Revised: 04/05/2019] [Accepted: 04/12/2019] [Indexed: 02/06/2023]
Abstract
Alpha-synuclein (α-Syn) is a central player in Parkinson's disease (PD) and in a spectrum of neurodegenerative diseases collectively known as synucleinopathies. The protein was first associated with PD just over 20 years ago, when it was found to (i) be a major component of Lewy bodies and (ii) to be also associated with familial forms of PD. The characterization of α-Syn pathology has been achieved through postmortem studies of human brains. However, the identification of toxic mechanisms associated with α-Syn was only achieved through the use of experimental models. In vitro models are highly accessible, enable relatively rapid studies, and have been extensively employed to address α-Syn-associated neurodegeneration. Given the diversity of models used and the outcomes of the studies, a cumulative and comprehensive perspective emerges as indispensable to pave the way for further investigations. Here, we subdivided in vitro models of α-Syn pathology into three major types: (i) models simulating α-Syn fibrillization and the formation of different aggregated structures in vitro, (ii) models based on the intracellular expression of α-Syn, reporting on pathogenic conditions and cellular dysfunctions induced, and (iii) models using extracellular treatment with α-Syn aggregated species, reporting on sites of interaction and their downstream consequences. In summary, we review the underlying molecular mechanisms discovered and categorize protective strategies, in order to pave the way for future studies and the identification of effective therapeutic strategies. This article is part of the Special Issue "Synuclein".
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Affiliation(s)
- Amir Tayaranian Marvian
- Department of Neurology, School of Medicine, Technical University of Munich, Munich, Germany.,Department of Translational Neurodegeneration, German Center for Neurodegenerative Diseases (DZNE), Munich, Germany
| | - David J Koss
- Institute of Neuroscience, The Medical School, Newcastle University, Newcastle Upon Tyne, UK
| | - Farhang Aliakbari
- Department of Industrial and Environmental Biotechnology, National Institute of Genetic Engineering and Biotechnology, Tehran, Iran.,Department of Experimental Neurodegeneration, Center for Biostructural Imaging of Neurodegeneration, Göttingen, Germany
| | - Dina Morshedi
- Department of Industrial and Environmental Biotechnology, National Institute of Genetic Engineering and Biotechnology, Tehran, Iran
| | - Tiago Fleming Outeiro
- Institute of Neuroscience, The Medical School, Newcastle University, Newcastle Upon Tyne, UK.,Department of Experimental Neurodegeneration, Center for Biostructural Imaging of Neurodegeneration, Göttingen, Germany.,University Medical Center Göttingen, Göttingen, Germany.,Max Planck Institute for Experimental Medicine, Göttingen, Germany
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Abstract
Flavonoids are not essential nutrients in that their absence from the diet does not produce deficiency conditions in animals and man. However, many have important similarities to pharmacological agents used in the treatment of disease. Their role as dietary components in disease prevention is less clear. Many potentially anti-carcinogenic and anti-atherogenic effects observed in cell cultures will not be of nutritional relevance unless flavonoids gain access to appropriate cellular sites. The bioavailability of flavonoids will depend on numerous factors including molecular structure, the amount consumed, the food matrix, degree of bioconversion in the gut and tissues, the nutrient status of the host and genetic factors. Moreover, extensive and rapid intestinal and hepatic metabolism of flavonoids suggests that the body may treat them as xenobiotic and potentially toxic compounds requiring rapid elimination. Consequently, in addition to potential health benefits, possible adverse effects of flavonoids in the diet also need to be considered when assessing their roles in the prevention of degenerative diseases.
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Affiliation(s)
- Janet Kyle
- Molecular Nutrition Group, Rowett Research Institute, Aberdeen, AB21 9SB, Scotland, UK
| | - Garry Duthie
- Molecular Nutrition Group, Rowett Research Institute, Aberdeen, AB21 9SB, Scotland, UK
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Sun K, Bai Y, Zhao R, Guo Z, Su X, Li P, Yang P. Neuroprotective effects of matrine on scopolamine-induced amnesia via inhibition of AChE/BuChE and oxidative stress. Metab Brain Dis 2019; 34:173-181. [PMID: 30406376 DOI: 10.1007/s11011-018-0335-y] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Accepted: 10/30/2018] [Indexed: 12/29/2022]
Abstract
The present study was designed to evaluate the effects of matrine (MAT) on scopolamine (SCOP)-induced learning and memory impairment. After successive oral administration of MAT to mice for three days at doses of 0.4, 2, and 10 mg/kg, we assessed improvements in learning and memory and investigated the mechanism of action of SCOP-induced amnesia. Donepezil at a dose of 3 mg/kg was used as a standard memory enhancer. MAT significantly improved SCOP-induced learning and memory impairment in novel object recognition and Y-maze tests at doses of 0.4, 2, and 10 mg/kg. Furthermore, MAT inhibited acetylcholinesterase (AChE) and butyrylcholinesterase (BuChE) activities and decreased oxidative stress in the brain, as evidenced by increased total antioxidant capacity, total superoxide dismutase levels, and catalase activities as well as decreased malondialdehyde levels. Additionally, there was a significant negative correlation between the percentage of spontaneous alternation in the Y maze and AChE activity in the cortex and hippocampus. MAT ameliorated SCOP-induced amnesia by the inhibition of both AChE/BuChE activities and oxidative stress. This study provides further evidence to encourage the development of MAT as a drug for the prevention or treatment of Alzheimer's disease.
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Affiliation(s)
- Kaiyue Sun
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, 030801, Shanxi, People's Republic of China.
| | - Yuting Bai
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, 030801, Shanxi, People's Republic of China
| | - Rong Zhao
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, 030801, Shanxi, People's Republic of China
| | - Zijiao Guo
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, 030801, Shanxi, People's Republic of China
| | - Xiang Su
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, 030801, Shanxi, People's Republic of China
| | - Peiqi Li
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, 030801, Shanxi, People's Republic of China
| | - Pengyu Yang
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, 030801, Shanxi, People's Republic of China
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Abstract
Parkinson’s disease (PD) is a neurodegenerative disease characterized by a progressive loss of dopaminergic neurons from the nigrostriatal pathway, formation of Lewy bodies, and microgliosis. During the past decades multiple cellular pathways have been associated with PD pathology (i.e., oxidative stress, endosomal-lysosomal dysfunction, endoplasmic reticulum stress, and immune response), yet disease-modifying treatments are not available. We have recently used genetic data from familial and sporadic cases in an unbiased approach to build a molecular landscape for PD, revealing lipids as central players in this disease. Here we extensively review the current knowledge concerning the involvement of various subclasses of fatty acyls, glycerolipids, glycerophospholipids, sphingolipids, sterols, and lipoproteins in PD pathogenesis. Our review corroborates a central role for most lipid classes, but the available information is fragmented, not always reproducible, and sometimes differs by sex, age or PD etiology of the patients. This hinders drawing firm conclusions about causal or associative effects of dietary lipids or defects in specific steps of lipid metabolism in PD. Future technological advances in lipidomics and additional systematic studies on lipid species from PD patient material may improve this situation and lead to a better appreciation of the significance of lipids for this devastating disease.
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Silva S, Costa EM, Veiga M, Morais RM, Calhau C, Pintado M. Health promoting properties of blueberries: a review. Crit Rev Food Sci Nutr 2018; 60:181-200. [PMID: 30373383 DOI: 10.1080/10408398.2018.1518895] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
With the strengthening of the link between diet and health, several foodstuffs have emerged as possessing potential health benefits such as phenolic rich fruits and vegetables. Blueberries, along with other berries, given their flavonoid and antioxidant content have long since been considered as a particularly interesting health promoting fruit. Therefore, the present work aimed to compile the existing evidences regarding the various potential benefits of blueberry and blueberry based products consumption, giving particular relevance to in vivo works and epidemiological studies whenever available. Overall, the results demonstrate that, while the evidences that support a beneficial role of blueberry and blueberry extracts consumption, further human based studies are still needed.
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Affiliation(s)
- Sara Silva
- CBQF - Centro de Biotecnologia e Química Fina - Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica Portuguesa/Porto, Porto, Portugal
| | - Eduardo M Costa
- CBQF - Centro de Biotecnologia e Química Fina - Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica Portuguesa/Porto, Porto, Portugal
| | - Mariana Veiga
- CBQF - Centro de Biotecnologia e Química Fina - Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica Portuguesa/Porto, Porto, Portugal
| | - Rui M Morais
- CBQF - Centro de Biotecnologia e Química Fina - Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica Portuguesa/Porto, Porto, Portugal
| | - Conceição Calhau
- Nutrição e Metabolismo, NOVA Medical School, Universidade Nova de Lisboa, Lisboa, Portugal.,CINTESIS, Centro de Investigação em Tecnologias e Serviços de Saúde, Universidade do Porto, Portugal
| | - Manuela Pintado
- CBQF - Centro de Biotecnologia e Química Fina - Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica Portuguesa/Porto, Porto, Portugal
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15
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Jung UJ, Kim SR. Beneficial Effects of Flavonoids Against Parkinson's Disease. J Med Food 2018; 21:421-432. [DOI: 10.1089/jmf.2017.4078] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Affiliation(s)
- Un Ju Jung
- Department of Food Science and Nutrition, Pukyong National University, Busan, Korea
| | - Sang Ryong Kim
- School of Life Sciences, BK21 Plus KNU Creative BioResearch Group, Institute of Life Science and Biotechnology, Kyungpook National University, Daegu, Korea
- Brain Science and Engineering Institute, Kyungpook National University, Daegu, Korea
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16
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Hussain G, Zhang L, Rasul A, Anwar H, Sohail MU, Razzaq A, Aziz N, Shabbir A, Ali M, Sun T. Role of Plant-Derived Flavonoids and Their Mechanism in Attenuation of Alzheimer's and Parkinson's Diseases: An Update of Recent Data. Molecules 2018; 23:E814. [PMID: 29614843 PMCID: PMC6017497 DOI: 10.3390/molecules23040814] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2018] [Revised: 03/25/2018] [Accepted: 03/27/2018] [Indexed: 12/13/2022] Open
Abstract
Neurodegeneration is a progressive loss of neuronal cells in certain regions of the brain. Most of the neurodegenerative disorders (NDDs) share the communal characteristic such as damage or reduction of various cell types typically including astrocytes and microglial activity. Several compounds are being trialed to treat NDDs but they possess solitary symptomatic advantages along with copious side effects. The finding of more enthralling and captivating compounds to suspend and standstill the pathology of NDDs will be considered as a hallmark of present times. Phytochemicals possess the potential to alternate the synthetic line of therapy against NDDs. The present review explores the potential efficacy of plant-derived flavonoids against most common NDDs including Alzheimer's disease (AD) and Parkinson's disease (PD). Flavonoids are biologically active phytochemicals which possess potential pharmacological effects, including antiviral, anti-allergic, antiplatelet, anti-inflammatory, anti-tumor, anti-apoptotic and anti-oxidant effects and are able to attenuate the pathology of various NDDs through down-regulating the nitric oxide (NO) production, by reducing the tumor necrosis factor-α (TNF-α), by reducing the excitotoxicity of superoxide as well as acting as tyrosine kinase (TK) and monoamine oxidase (MAO) inhibiting enzyme.
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Affiliation(s)
- Ghulam Hussain
- Department of Physiology, Faculty of Life Sciences, Government College University, Faisalabad 38000, Pakistan.
| | - Longbin Zhang
- Center for Precision Medicine, School of Medicine and School of Biomedical Sciences, Huaqiao University, Xiamen 361021, China.
| | - Azhar Rasul
- Department of Zoology, Faculty of Life Sciences, Government College University, Faisalabad 38000, Pakistan.
| | - Haseeb Anwar
- Department of Physiology, Faculty of Life Sciences, Government College University, Faisalabad 38000, Pakistan.
| | - Muhammad Umar Sohail
- Department of Physiology, Faculty of Life Sciences, Government College University, Faisalabad 38000, Pakistan.
| | - Aroona Razzaq
- Department of Physiology, Faculty of Life Sciences, Government College University, Faisalabad 38000, Pakistan.
| | - Nimra Aziz
- Department of Physiology, Faculty of Life Sciences, Government College University, Faisalabad 38000, Pakistan.
| | - Asghar Shabbir
- Department of Biosciences, COMSATS Institute of Information Technology, Islamabad 44000, Pakistan.
| | - Muhammad Ali
- Department of Zoology, Faculty of Life Sciences, Government College University, Faisalabad 38000, Pakistan.
| | - Tao Sun
- Center for Precision Medicine, School of Medicine and School of Biomedical Sciences, Huaqiao University, Xiamen 361021, China.
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17
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Palle S, Neerati P. Quercetin nanoparticles attenuates scopolamine induced spatial memory deficits and pathological damages in rats. ACTA ACUST UNITED AC 2017. [DOI: 10.1016/j.bfopcu.2016.10.004] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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18
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Morgan LA, Grundmann O. Preclinical and Potential Applications of Common Western Herbal Supplements as Complementary Treatment in Parkinson's Disease. J Diet Suppl 2017; 14:453-466. [DOI: 10.1080/19390211.2016.1263710] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Luke A. Morgan
- Department of Medicinal Chemistry, College of Pharmacy, University of Florida, Gainesville, FL, USA
| | - Oliver Grundmann
- Department of Medicinal Chemistry, College of Pharmacy, University of Florida, Gainesville, FL, USA
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19
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Ogedengbe OO, Jegede AI, Onanuga IO, Offor U, Naidu EC, Peter AI, Azu OO. Coconut Oil Extract Mitigates Testicular Injury Following Adjuvant Treatment with Antiretroviral Drugs. Toxicol Res 2016; 32:317-325. [PMID: 27818734 PMCID: PMC5080853 DOI: 10.5487/tr.2016.32.4.317] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2016] [Revised: 06/26/2016] [Accepted: 07/18/2016] [Indexed: 12/12/2022] Open
Abstract
Increased access to highly active antiretroviral therapy (HAART) has made the management of drug toxicities an increasingly crucial component of HIV. This study investigated the effects of adjuvant use of coconut oil and HAART on testicular morphology and seminal parameters in Sprague- Dawley rats. Twelve adult male Sprague-Dawley rats, weighing 153~169 g were distributed into four groups (A–D) and treated as follows: A served as control (distilled water); B (HAART cocktail- Zidovudine, Lamivudine and Nevirapine); C (HAART + Virgin coconut oil 10 mL/kg) and D (Virgin coconut oil 10 mL/kg). After 56 days of treatment, animals were killed and laparotomy to exercise the epididymis for seminal fluid analyses done whilst testicular tissues were processed for histomorphometric studies. Result showed a significant decline in sperm motility (P < 0.05) and count (P < 0.0001) in HAART-treated animals while there was insignificant changes in other parameters in groups C and D except count that was reduced (P < 0.0001) when compared with controls. Histomorphological studies showed HAART caused disorders in seminiferous tubular architecture with significant (P < 0.01) decline in epithelial height closely mirrored by extensive reticulin framework and positive PAS cells. Adjuvant Virgin coconut oil + HAART resulted in significant decrease in seminiferous tubular diameter (P < 0.05), but other morphometric and histological parameters were similar to control or Virgin coconut oil alone (which showed normal histoarchitecture levels). While derangements in testicular and seminal fluid parameters occurred following HAART, adjuvant treatment with Virgin coconut oil restored the distortions emanating thereof.
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Affiliation(s)
- Oluwatosin O Ogedengbe
- Discipline of Clinical Anatomy, Nelson R. Mandela School of Medicine, University of Kwazulu-Natal, Durban, South Africa; Department of Anatomy, College of Medicine and Health Sciences, Afe Babalola University, Ado Ekiti, Nigeria
| | - Ayoola I Jegede
- Discipline of Clinical Anatomy, Nelson R. Mandela School of Medicine, University of Kwazulu-Natal, Durban, South Africa; Department of Anatomy, Faculty of Basic Medical Sciences, College of Health Sciences, Ladoke Akintola University of Technology, Ogbomoso, Nigeria
| | - Ismail O Onanuga
- Discipline of Clinical Anatomy, Nelson R. Mandela School of Medicine, University of Kwazulu-Natal, Durban, South Africa; Department of Anatomy, Faculty of Biomedical Sciences, Kampala International University, Western Campus, Ishaka, Uganda
| | - Ugochukwu Offor
- Discipline of Clinical Anatomy, Nelson R. Mandela School of Medicine, University of Kwazulu-Natal, Durban, South Africa
| | - Edwin Cs Naidu
- Discipline of Clinical Anatomy, Nelson R. Mandela School of Medicine, University of Kwazulu-Natal, Durban, South Africa
| | - Aniekan I Peter
- Discipline of Clinical Anatomy, Nelson R. Mandela School of Medicine, University of Kwazulu-Natal, Durban, South Africa; Department of Anatomy, Faculty of Basic Medical Sciences, University of Uyo-Nigeria, Uyo, Nigeria
| | - Onyemaechi O Azu
- Discipline of Clinical Anatomy, Nelson R. Mandela School of Medicine, University of Kwazulu-Natal, Durban, South Africa
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20
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Mikulic-Petkovsek M, Stampar F, Veberic R, Sircelj H. WildPrunusFruit Species as a Rich Source of Bioactive Compounds. J Food Sci 2016; 81:C1928-37. [DOI: 10.1111/1750-3841.13398] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2016] [Revised: 06/09/2016] [Accepted: 06/18/2016] [Indexed: 11/29/2022]
Affiliation(s)
- Maja Mikulic-Petkovsek
- Chair for Fruit, Viticulture and Vegetable Growing, Dept. of Agronomy, Biotechnical Faculty; Univ. of Ljubljana; Jamnikarjeva 101 SI-1000 Ljubljana Slovenia
| | - Franci Stampar
- Chair for Fruit, Viticulture and Vegetable Growing, Dept. of Agronomy, Biotechnical Faculty; Univ. of Ljubljana; Jamnikarjeva 101 SI-1000 Ljubljana Slovenia
| | - Robert Veberic
- Chair for Fruit, Viticulture and Vegetable Growing, Dept. of Agronomy, Biotechnical Faculty; Univ. of Ljubljana; Jamnikarjeva 101 SI-1000 Ljubljana Slovenia
| | - Helena Sircelj
- Chair for Applied Botany, Ecology, Plant Physiology and Informatics, Dept. of Agronomy, Biotechnical Faculty; Univ. of Ljubljana; Jamnikarjeva 101 SI-1000 Ljubljana Slovenia
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21
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Chen X, Zhou M, Huang Z, Jia G, Liu G, Zhao H. Codon optimization of Aspergillus niger feruloyl esterase and its expression in Pichia pastoris. Biologia (Bratisl) 2016. [DOI: 10.1515/biolog-2016-0089] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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22
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Kikugawa M, Tsutsuki H, Ida T, Nakajima H, Ihara H, Sakamoto T. Water-soluble ferulic acid derivatives improve amyloid-β-induced neuronal cell death and dysmnesia through inhibition of amyloid-β aggregation. Biosci Biotechnol Biochem 2016; 80:547-53. [DOI: 10.1080/09168451.2015.1107463] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Abstract
Ferulic acid (FA) has been reported to exhibit protective effects against amyloid-β (Aβ)-induced neurodegeneration in vitro and in vivo. Recently, we developed two water-soluble FA derivatives: 1-feruloyl glycerol and 1-feruloyl diglycerol. In this study, we examined the neuroprotective effects of these water-soluble FA derivatives on Aβ-induced neurodegeneration both in vitro and in vivo. FA and water-soluble FA derivatives inhibited Aβ aggregation and destabilized pre-aggregated Aβ to a similar extent. Furthermore, water-soluble FA derivatives, as well as FA, inhibited Aβ-induced neuronal cell death in cultured neuronal cells. In in vivo experiments, oral administration of water-soluble FA derivatives to mice improved Aβ-induced dysmnesia assessed by contextual fear conditioning test and protected hippocampal neurons against Aβ-induced neurotoxicity. This study provides useful evidence suggesting that water-soluble FA derivatives are expected to be effective neuroprotective agents.
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Affiliation(s)
- Masaki Kikugawa
- Division of Applied Life Sciences, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Sakai, Japan
| | - Hiroyasu Tsutsuki
- Department of Biological Science, Graduate School of Science, Osaka Prefecture University, Sakai, Japan
| | - Tomoaki Ida
- Department of Biological Science, Graduate School of Science, Osaka Prefecture University, Sakai, Japan
| | - Hidemitsu Nakajima
- Division of Veterinary Science, Graduate School of Life Environmental Sciences, Osaka Prefecture University, Izumisano, Japan
| | - Hideshi Ihara
- Department of Biological Science, Graduate School of Science, Osaka Prefecture University, Sakai, Japan
| | - Tatsuji Sakamoto
- Division of Applied Life Sciences, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Sakai, Japan
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23
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Mikulic-Petkovsek M, Ivancic A, Schmitzer V, Veberic R, Stampar F. Comparison of major taste compounds and antioxidative properties of fruits and flowers of different Sambucus species and interspecific hybrids. Food Chem 2016; 200:134-40. [PMID: 26830570 DOI: 10.1016/j.foodchem.2016.01.044] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2015] [Revised: 01/08/2016] [Accepted: 01/10/2016] [Indexed: 10/22/2022]
Abstract
Differences in the content of sugars, organic acids, total phenolics and antioxidative activity have been evaluated among three different elderberry species (Sambucus nigra, Sambucus cerulea, Sambucus javanica) and seven interspecific hybrids. The highest content of sugars has been determined in the fruits of JA×CER hybrid and the lowest in fruits of (JA×NI)×cv. Black Beauty hybrid. S. nigra berries contained highest levels of total organic acids. S. nigra and (JA×NI)×CER flower extracts were characterized by 1.3- to 2.8-fold higher content of total sugars compared to other species/hybrids analyzed. Total phenolic content (TPC) in berries ranged from 3687 to 6831 mg GAE per kg FW. The highest TPC has been determined in S. nigra fruits and flowers. The ABTS scavenging activity differed significantly among species and hybrids and ranged from 3.2 to 39.59 mM trolox/kgF W in fruits and 44.87-118.26 mM trolox/kg DW in flowers.
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Affiliation(s)
- Maja Mikulic-Petkovsek
- University of Ljubljana, Biotechnical Faculty, Department of Agronomy, Jamnikarjeva 101, SI-1000 Ljubljana, Slovenia.
| | - Anton Ivancic
- University of Maribor, Faculty of Agriculture and Life Sciences, Institute for Genetics, Hoce, Slovenia
| | - Valentina Schmitzer
- University of Ljubljana, Biotechnical Faculty, Department of Agronomy, Jamnikarjeva 101, SI-1000 Ljubljana, Slovenia
| | - Robert Veberic
- University of Ljubljana, Biotechnical Faculty, Department of Agronomy, Jamnikarjeva 101, SI-1000 Ljubljana, Slovenia
| | - Franci Stampar
- University of Ljubljana, Biotechnical Faculty, Department of Agronomy, Jamnikarjeva 101, SI-1000 Ljubljana, Slovenia
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24
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Araujo SM, de Paula MT, Poetini MR, Meichtry L, Bortolotto VC, Zarzecki MS, Jesse CR, Prigol M. Effectiveness of γ-oryzanol in reducing neuromotor deficits, dopamine depletion and oxidative stress in a Drosophila melanogaster model of Parkinson's disease induced by rotenone. Neurotoxicology 2015; 51:96-105. [DOI: 10.1016/j.neuro.2015.09.003] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2015] [Revised: 09/04/2015] [Accepted: 09/09/2015] [Indexed: 02/05/2023]
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25
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Ferri C, Desideri G, Ferri L, Proietti I, Di Agostino S, Martella L, Mai F, Di Giosia P, Grassi D. Cocoa, blood pressure, and cardiovascular health. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2015; 63:9901-9909. [PMID: 26125676 DOI: 10.1021/acs.jafc.5b01064] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
High blood pressure is an important risk factor for cardiovascular disease and cardiovascular events worldwide. Clinical and epidemiological studies suggest that cocoa-rich products reduce the risk of cardiovascular disease. According to this, cocoa has a high content in polyphenols, especially flavanols. Flavanols have been described to exert favorable effects on endothelium-derived vasodilation via the stimulation of nitric oxide-synthase, the increased availability of l-arginine, and the decreased degradation of NO. Cocoa may also have a beneficial effect by protecting against oxidative stress alterations and via decreased platelet aggregation, decreased lipid oxidation, and insulin resistance. These effects are associated with a decrease of blood pressure and a favorable trend toward a reduction in cardiovascular events and strokes. Previous meta-analyses have shown that cocoa-rich foods may reduce blood pressure. Long-term trials investigating the effect of cocoa products are needed to determine whether or not blood pressure is reduced on a chronic basis by daily ingestion of cocoa. Furthermore, long-term trials investigating the effect of cocoa on clinical outcomes are also needed to assess whether cocoa has an effect on cardiovascular events. A 3 mmHg systolic blood pressure reduction has been estimated to decrease the risk of cardiovascular and all-cause mortality. This paper summarizes new findings concerning cocoa effects on blood pressure and cardiovascular health, focusing on putative mechanisms of action and "nutraceutical " viewpoints.
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Affiliation(s)
- Claudio Ferri
- Department of Life, Health & Environmental Sciences, University of L'Aquila , 67100 Coppito, L'Aquila, Italy
| | - Giovambattista Desideri
- Department of Life, Health & Environmental Sciences, University of L'Aquila , 67100 Coppito, L'Aquila, Italy
| | - Livia Ferri
- Department of Life, Health & Environmental Sciences, University of L'Aquila , 67100 Coppito, L'Aquila, Italy
| | - Ilenia Proietti
- Department of Life, Health & Environmental Sciences, University of L'Aquila , 67100 Coppito, L'Aquila, Italy
| | - Stefania Di Agostino
- Department of Life, Health & Environmental Sciences, University of L'Aquila , 67100 Coppito, L'Aquila, Italy
| | - Letizia Martella
- Department of Life, Health & Environmental Sciences, University of L'Aquila , 67100 Coppito, L'Aquila, Italy
| | - Francesca Mai
- Department of Life, Health & Environmental Sciences, University of L'Aquila , 67100 Coppito, L'Aquila, Italy
| | - Paolo Di Giosia
- Department of Life, Health & Environmental Sciences, University of L'Aquila , 67100 Coppito, L'Aquila, Italy
| | - Davide Grassi
- Department of Life, Health & Environmental Sciences, University of L'Aquila , 67100 Coppito, L'Aquila, Italy
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Williams RJ, Mohanakumar KP, Beart PM. Neuro-nutraceuticals: The path to brain health via nourishment is not so distant. Neurochem Int 2015; 89:1-6. [PMID: 26303091 DOI: 10.1016/j.neuint.2015.08.012] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
In this Special Issue on "Nutraceuticals: Molecular and Functional Insights into how Natural Products Nourish the Brain", the editors bring together contributions from experts in nutraceutical research to provide a contemporary overview of how select chemically identified molecules can beneficially affect brain function at the molecular level. Other contributions address key emergent issues such as bioavailability, formulation, blood brain permeability, neuronal health and inflammation that impact upon how nutraceuticals ultimately leverage the brain to function better. Whilst nutraceutical is used as marketing term, it has no regulatory definition, and there is a continuing need for licensing authorities to ensure that adequate guidelines exist pertinent to the safety to guide consumers internationally. In terms of the benefit of nutraceuticals is it clear that some naturally occurring molecules can be advantageous to both the young and aged brain, and that they have actions that ultimately can be directed to aid either in the improvement of cognition or in the management of debilitating neurodegenerative and neuropsychiatric conditions.
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Affiliation(s)
- Robert J Williams
- Department of Biology and Biochemistry, University of Bath, Claverton Down, Bath BA2 7AY, UK
| | - Kochupurackal P Mohanakumar
- Division of Cell Biology and Physiology, Laboratory of Clinical and Experimental Neuroscience, CSIR-Indian Institute of Chemical Biology, Kolkata 700 032, India
| | - Philip M Beart
- Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, Victoria 3010, Australia.
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27
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Hajipour S, Sarkaki A, Mohammad S, Mansouri T, Pilevarian A, RafieiRad M. Motor and cognitive deficits due to permanent cerebral hypoperfusion/ischemia improve by pomegranate seed extract in rats. Pak J Biol Sci 2015; 17:991-8. [PMID: 26031017 DOI: 10.3923/pjbs.2014.991.998] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
This study aimed to evaluate the effect of two weeks oral administration of Pomegranate Seed Extract (PGSE) on active avoidance memory and motor coordination activities after permanent bilateral common carotid arteries occlusion (2CCAO) in male adult rats. Adult male albino rats of Wistar strain (250 ± 20 g, 3-4 months) were used. Animals were divided into eight groups with 10 in each: (1) Sham operated (Sh); (2) Ischemic (I); (3) Ischemic received 100 mg kg(-1) PGSE, orally (I+E100); (4) Ischemic received 200 mg kg(-1) PGSE, orally (I+E200); (5) Ischemic received 400 mg kg(-1) PGSE, orally (I+E400); (6) Ischemic received 800 mg kg(-1) PGSE, orally (I+ E800); (7) Ischemic received 2 mL kg(-1) normal saline, orally (I+Veh); (8) Sham operated received 400 mg kg(-1) PGSE, orally (Sh+E400). In order to make 2CCAO an animal Cerebral Hypoperfusion Ischemia (CHI) model, carotid arteries were ligatured and then bilaterally cut. To evaluate active avoidance task, Correct Response Percentages (CRP) was measured by Y-maze apparatus and motor coordination activity was evaluated using standard behavioral tests by rotarod apparatus in all the rats. It was found that memory. Memory and motor coordination activities were significantly impaired in the rats after CHI (p < 0.01). PGSE treatment significantly improved impairment of memory and motor coordination in the rats with 2CCAO (p < 0.001). PGSE exhibited therapeutic potential for memory and muscular coordination, which was most likely related at least in some part to its antioxidative and free radical scavenging actions.
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28
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Mäkelä MR, Marinović M, Nousiainen P, Liwanag AJM, Benoit I, Sipilä J, Hatakka A, de Vries RP, Hildén KS. Aromatic metabolism of filamentous fungi in relation to the presence of aromatic compounds in plant biomass. ADVANCES IN APPLIED MICROBIOLOGY 2015; 91:63-137. [PMID: 25911233 DOI: 10.1016/bs.aambs.2014.12.001] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The biological conversion of plant lignocellulose plays an essential role not only in carbon cycling in terrestrial ecosystems but also is an important part of the production of second generation biofuels and biochemicals. The presence of the recalcitrant aromatic polymer lignin is one of the major obstacles in the biofuel/biochemical production process and therefore microbial degradation of lignin is receiving a great deal of attention. Fungi are the main degraders of plant biomass, and in particular the basidiomycete white rot fungi are of major importance in converting plant aromatics due to their ability to degrade lignin. However, the aromatic monomers that are released from lignin and other aromatic compounds of plant biomass are toxic for most fungi already at low levels, and therefore conversion of these compounds to less toxic metabolites is essential for fungi. Although the release of aromatic compounds from plant biomass by fungi has been studied extensively, relatively little attention has been given to the metabolic pathways that convert the resulting aromatic monomers. In this review we provide an overview of the aromatic components of plant biomass, and their release and conversion by fungi. Finally, we will summarize the applications of fungal systems related to plant aromatics.
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Affiliation(s)
- Miia R Mäkelä
- Department of Food and Environmental Sciences, University of Helsinki, Helsinki, Finland
| | - Mila Marinović
- Department of Food and Environmental Sciences, University of Helsinki, Helsinki, Finland
| | - Paula Nousiainen
- Department of Chemistry, Laboratory of Organic Chemistry, University of Helsinki, Helsinki, Finland
| | - April J M Liwanag
- Fungal Physiology, CBS-KNAW Fungal Biodiversity Centre, Utrecht, The Netherlands; Fungal Molecular Physiology, Utrecht University, Utrecht, The Netherlands
| | - Isabelle Benoit
- Fungal Physiology, CBS-KNAW Fungal Biodiversity Centre, Utrecht, The Netherlands; Fungal Molecular Physiology, Utrecht University, Utrecht, The Netherlands
| | - Jussi Sipilä
- Department of Chemistry, Laboratory of Organic Chemistry, University of Helsinki, Helsinki, Finland
| | - Annele Hatakka
- Department of Food and Environmental Sciences, University of Helsinki, Helsinki, Finland
| | - Ronald P de Vries
- Fungal Physiology, CBS-KNAW Fungal Biodiversity Centre, Utrecht, The Netherlands; Fungal Molecular Physiology, Utrecht University, Utrecht, The Netherlands
| | - Kristiina S Hildén
- Department of Food and Environmental Sciences, University of Helsinki, Helsinki, Finland
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Choi MR, Lee MY, Hong JE, Kim JE, Lee JY, Kim TH, Chun JW, Shin HK, Kim EJ. Rubus coreanus Miquel Ameliorates Scopolamine-Induced Memory Impairments in ICR Mice. J Med Food 2014; 17:1049-56. [DOI: 10.1089/jmf.2013.3004] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Mi-Ran Choi
- Center for Efficacy Assessment and Development of Functional Foods and Drugs, Hallym University, Chuncheon, Korea
| | - Min Young Lee
- Center for Efficacy Assessment and Development of Functional Foods and Drugs, Hallym University, Chuncheon, Korea
| | - Ji Eun Hong
- Center for Efficacy Assessment and Development of Functional Foods and Drugs, Hallym University, Chuncheon, Korea
| | - Jeong Eun Kim
- Center for Efficacy Assessment and Development of Functional Foods and Drugs, Hallym University, Chuncheon, Korea
| | - Jae-Yong Lee
- Center for Efficacy Assessment and Development of Functional Foods and Drugs, Hallym University, Chuncheon, Korea
- Department of Biochemistry, College of Medicine, Hallym University, Chuncheon, Korea
| | - Tae Hwan Kim
- Research and Development Center, Hitejinro Co. Ltd., Hongcheon, Korea
| | - Jang Woo Chun
- Research and Development Center, Hitejinro Co. Ltd., Hongcheon, Korea
| | | | - Eun Ji Kim
- Center for Efficacy Assessment and Development of Functional Foods and Drugs, Hallym University, Chuncheon, Korea
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Danta CC, Piplani P. The discovery and development of new potential antioxidant agents for the treatment of neurodegenerative diseases. Expert Opin Drug Discov 2014; 9:1205-22. [PMID: 25056182 DOI: 10.1517/17460441.2014.942218] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
INTRODUCTION Several neurodegenerative disorders (NDs) including Alzheimer's and Huntington's diseases have had associations with the oxidative process and free radical damage. Consequently, in past decades, several natural and synthetic antioxidants have been assessed as therapeutic agents but have shown limitations in bioavailability, metabolic susceptibility and permeability to the blood brain barrier. Given these issues, medicinal chemists are hard at work to modify/improve the chemical structures of these antioxidants, thereby improving their efficacy. AREAS COVERED In this review, the authors critically analyze several biological mechanisms involved in the generation of free radicals. Additionally, they analyze free radicals' role in the generation of oxidative stress and in the progression of many NDs. Further, the authors review a collection of natural and synthetic antioxidants, their role as free radical scavengers along with their mechanisms of action and their potential for preventing neurodegenerative diseases. EXPERT OPINION So far, preclinical studies on several antioxidants have shown promise for treating NDs, despite their limitations. The authors do highlight the lack of the adequate animal models for preclinical assessment and this does hinder further progression into clinical trials. Further studies are necessary to fully investigate the potential of these antioxidants as ND therapeutic options.
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Affiliation(s)
- Chhanda Charan Danta
- Panjab University, University Institute of Pharmaceutical Sciences , Chandigarh-160014 , India
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Kim J, Kim J, Shim J, Lee CY, Lee KW, Lee HJ. Cocoa Phytochemicals: Recent Advances in Molecular Mechanisms on Health. Crit Rev Food Sci Nutr 2014; 54:1458-72. [DOI: 10.1080/10408398.2011.641041] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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Wu K, Wang ZZ, Liu D, Qi XR. Pharmacokinetics, brain distribution, release and blood-brain barrier transport of Shunaoxin pills. JOURNAL OF ETHNOPHARMACOLOGY 2014; 151:1133-1140. [PMID: 24373808 DOI: 10.1016/j.jep.2013.12.027] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2013] [Revised: 11/29/2013] [Accepted: 12/18/2013] [Indexed: 06/03/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Shunaoxin pills, a traditional Chinese medicine (TCM) product, have been used to treat cerebrovascular diseases in China since 2005. The main active components of Shunaoxin pills are ferulic acid and ligustilide from Chuanxiong (Ligusticum chuanxiong Hort, Umbelliferae) and Danggui (Angelica sinensis radix, Umbelliferae). As Shunaoxin shows excellent activity in the central nervous system (CNS), the extent to which the major constituents of Shunaoxin reach the CNS should be investigated. Moreover, the in vivo-in vitro correlations (IVIVC) of the formulation should be studied to elucidate the mechanisms of action of TCM in the CNS. However, these data have not previously been available. Thus we intended to investigate what the extent when these constituents of Shunaoxin pills reach the CNS, and evaluate the IVIVC of release and pharmacokinetics. MATERIALS AND METHODS In this study, we evaluated the release of ferulic acid and ligustilide from Shunaoxin pills, and their transport across an in vitro model of the BBB. We also evaluated their pharmacokinetics and brain distribution in vivo. High-performance liquid chromatography (HPLC) was used to quantify both compounds simultaneously. Based on the release in vitro and absorption of ferulic acid and ligustilide in vivo, IVIVC permitted prediction of the pharmacokinetics of these compounds. RESULTS The release of ferulic acid and ligustilide reached a platform phase within 1h. Ferulic acid and ligustilide rapidly crossed the BBB in different patterns; the transport ratio increased over time. After intragastric (i.g.) administration of Shunaoxin pills, ferulic acid and ligustilide were rapidly absorbed and distributed into brain, which may result in a rapid onset of action. CONCLUSIONS Ferulic acid and ligustilide were transported across a model BBB. After i.g. administration of Shunaoxin pills, ferulic acid and ligustilide were rapidly absorbed and distributed in brain; this may lead to rapid pharmacological onset. The IVIVC can be used to predict in vivo pharmacokinetics from in vitro experimental results. These results provide support for the clinical use of Shunaoxin pills.
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Affiliation(s)
- Kai Wu
- The State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
| | - Zhan-Zhang Wang
- The State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
| | - Dan Liu
- Tianjin No. 6 Traditional Chinese Medicine Factory of Zhongxin Pharmaceuticals Group Co., Ltd. Tianjin 300401, China
| | - Xian-Rong Qi
- The State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China.
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Messaoudi M, Bisson JF, Nejdi A, Rozan P, Javelot H. Antidepressant-like effects of a cocoa polyphenolic extract in Wistar–Unilever rats. Nutr Neurosci 2013; 11:269-76. [DOI: 10.1179/147683008x344165] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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Yang SQ, Tang L, Yan QJ, Zhou P, Xu HB, Jiang ZQ, Zhang P. Biochemical characteristics and gene cloning of a novel thermostable feruloyl esterase from Chaetomium sp. ACTA ACUST UNITED AC 2013. [DOI: 10.1016/j.molcatb.2013.06.011] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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A feruloyl esterase (FAE) characterized by relatively high thermostability from the edible mushroom Russula virescens. Appl Biochem Biotechnol 2013; 172:993-1003. [PMID: 24142352 DOI: 10.1007/s12010-013-0536-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2013] [Accepted: 09/15/2013] [Indexed: 10/26/2022]
Abstract
A monomeric feruloyl esterase (FAE) with a molecular mass of 62 kDa was acquired from fresh fruiting bodies of the edible mushroom Russula virescens. The isolation procedure involved ion exchange chromatography on CM-cellulose, Q-Sepharose, and SP-Sepharose and finally fast protein liquid chromatography-gel filtration on Superdex 75. Two amino acid sequences were obtained after tryptic digestion, and they both showed some homology with the esterase of some fungi. Maximal activity was observed at pH 5.0 and at 50 °C. The enzyme displayed relatively high thermostability as evidenced by over 70 % residual activity at 70 °C and about 34 % residual activity at 80 °C. The K m and V max for this enzyme on methyl ferulate were 0.19 mM and 1.65 U/mg proteins, respectively. The purified FAE prefers methyl ferulate over methyl caffeate and is least active on methyl p-coumarate. The FAE activity was not significantly affected by the presence of cations such as Mn(2+), Ca(2+), Cd(2+), Zn(2+), Mg(2+), Cu(2+), and K(+) ions but inhibited by Al(3+), Hg(2+), Fe(2+), and Pb(2+) ions at a tested concentration of 2. 5 mM.
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Atrahimovich D, Vaya J, Khatib S. The effects and mechanism of flavonoid-rePON1 interactions. Structure-activity relationship study. Bioorg Med Chem 2013; 21:3348-55. [PMID: 23623675 DOI: 10.1016/j.bmc.2013.02.055] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2012] [Revised: 12/31/2012] [Accepted: 02/16/2013] [Indexed: 10/27/2022]
Abstract
Flavonoids are plant phenolic secondary metabolites that are widely distributed in the human diet. These antioxidants have received much attention because of their neuroprotective, cardioprotective, and chemopreventive actions. While a major focus has been on the flavonoids' antioxidant properties, there is an emerging view that many of the potential health benefits of flavonoids and their in vivo metabolites are due to modulatory actions in cells through direct interactions with proteins, and not necessarily due to their antioxidant function. This view relies on the observations that flavonoids are present in the circulation at very low concentrations, which are not sufficient to exert effective antioxidant effects. The enzyme paraoxonase 1 (PON1) is associated with high-density lipoprotein (HDL), and is responsible for many of HDLs' antiatherogenic properties. We previously showed that the flavonoid glabridin binds to rePON1 and affects the enzyme's 3D structure. This interaction protects the enzyme from inhibition by an atherogenic component of the human carotid plaque. Here, we broadened our study to an investigation of the structure-activity relationships (SARs) of 12 flavonoids from different subclasses with rePON1 using Trp-fluorescence quenching, modeling calculations and Cu(2+)-induced low-density lipoprotein (LDL) oxidation methods. Our findings emphasize the 'protein-binding' mechanism by which flavonoids exert their beneficial biological role toward rePON1. Flavonoids' capacity to interact with the enzyme's rePON1 hydrophobic groove mostly dictates their pro/antioxidant behavior.
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Affiliation(s)
- Dana Atrahimovich
- Oxidative Stress Research Laboratory, MIGAL-Galilee Research Institute, PO Box 831, Kiryat Shmona 11016, Israel
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Hu F, Bu YZ, Liang R, Duan RM, Wang S, Han RM, Wang P, Ai XC, Zhang JP, Skibsted LH. Quercetin and daidzein β-apo-14'-carotenoic acid esters as membrane antioxidants. Free Radic Res 2013; 47:413-21. [PMID: 23480575 DOI: 10.3109/10715762.2013.784396] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Esterification by β-apo-14'-carotenoic acid was found to have opposite effects on antioxidant activity of quercetin (at B4', B3' hydroxyl) as of daidzein (at A7 hydroxyl) in phosphatidylcholine liposomes. The daidzein ester had increased activity, while quercetin had a significant decreased activity. Quantum mechanical calculations using density function theory (DFT) indicate a modest decrease in bond dissociation enthalpy, BDE, for (weakest) hydrogen-oxygen phenolic bond in daidzein from 368.4 kJ · mol(- 1) to 367.7 kJ · mol(- 1) compared to a significant increase in quercetin from 329.5 kJ · mol(- 1) to 356.6 kJ · mol(- 1) upon derivatization. These opposite changes in tendency for hydrogen atom transfer from phenolic groups to lipid radicals combined with an increase in A-to-B dihedral angle from 0.0° to 36.4° and in dipole moment from 0.40 D to 6.01 D for quercetin upon derivatization, while less significant for daidzein (36.4°-36.7° and 3.26 D-7.87 D, respectively), together provide a rationale for the opposite effect of esterification on antioxidation.
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Affiliation(s)
- F Hu
- Department of Chemistry, Renmin University of China, Beijing, PR China
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Keddy PGW, Dunlop K, Warford J, Samson ML, Jones QRD, Rupasinghe HPV, Robertson GS. Neuroprotective and anti-inflammatory effects of the flavonoid-enriched fraction AF4 in a mouse model of hypoxic-ischemic brain injury. PLoS One 2012; 7:e51324. [PMID: 23251498 PMCID: PMC3520852 DOI: 10.1371/journal.pone.0051324] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2012] [Accepted: 10/31/2012] [Indexed: 11/23/2022] Open
Abstract
We report here neuroprotective and anti-inflammatory effects of a flavonoid-enriched fraction isolated from the peel of Northern Spy apples (AF4) in a mouse of model of hypoxic-ischemic (HI) brain damage. Oral administration of AF4 (50 mg/kg, once daily for 3 days) prior to 50 min of HI completely prevented motor performance deficits assessed 14 days later that were associated with marked reductions in neuronal cell loss in the dorsal hippocampus and striatum. Pre-treatment with AF4 (5, 10, 25 or 50 mg/kg, p.o.; once daily for 3 days) produced a dose-dependent reduction in HI-induced hippocampal and striatal neuron cell loss, with 25 mg/kg being the lowest dose that achieved maximal neuroprotection. Comparison of the effects of 1, 3 or 7 doses of AF4 (25 mg/kg; p.o.) prior to HI revealed that at least 3 doses of AF4 were required before HI to reduce neuronal cell loss in both the dorsal hippocampus and striatum. Quantitative RT-PCR measurements revealed that the neuroprotective effects of AF4 (25 mg/kg; p.o.; once daily for 3 days) in the dorsal hippocampus were associated with a suppression of HI-induced increases in the expression of IL-1β, TNF-α and IL-6. AF4 pre-treatment enhanced mRNA levels for pro-survival proteins such as X-linked inhibitor of apoptosis and erythropoietin following HI in the dorsal hippocampus and striatum, respectively. Primary cultures of mouse cortical neurons incubated with AF4 (1 µg/ml), but not the same concentrations of either quercetin or quercetin-3-O-glucose or its metabolites, were resistant to cell death induced by oxygen glucose deprivation. These findings suggest that the inhibition of HI-induced brain injury produced by AF4 likely involves a transcriptional mechanism resulting from the co-operative actions of various phenolics in this fraction which not only reduce the expression of pro-inflammatory mediators but also enhance pro-survival gene signalling.
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Affiliation(s)
- Paul G. W. Keddy
- Department of Pharmacology, Faculty of Medicine, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Kate Dunlop
- Department of Pharmacology, Faculty of Medicine, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Jordan Warford
- Department of Pharmacology, Faculty of Medicine, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Michel L. Samson
- Department of Pharmacology, Faculty of Medicine, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Quinton R. D. Jones
- Department of Pharmacology, Faculty of Medicine, Dalhousie University, Halifax, Nova Scotia, Canada
| | - H. P. Vasantha Rupasinghe
- Department of Environmental Sciences, Faculty of Agriculture, Dalhousie University, Truro, Nova Scotia, Canada
| | - George S. Robertson
- Department of Pharmacology, Faculty of Medicine, Dalhousie University, Halifax, Nova Scotia, Canada
- Department of Psychiatry, Faculty of Medicine, Dalhousie University, Halifax, Nova Scotia, Canada
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Antiamnesic activity of Syzygium cumini against scopolamine induced spatial memory impairments in rats. Brain Dev 2012; 34:844-51. [PMID: 22475379 DOI: 10.1016/j.braindev.2012.02.008] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/19/2011] [Revised: 02/14/2012] [Accepted: 02/21/2012] [Indexed: 12/28/2022]
Abstract
We evaluated the Antiamnesic effects of methanolic extract of Syzygium cumini (MESC) on spatial memory impairments induced by scopolamine (1 mg/kg, i.p.), a muscarinic antagonist, using the Radial arm maze, Morris water maze, learned helpless ness tests. Effect of MESC was evaluated and compared to standard drug, piracetam (200 mg/kg, i.p.). The MESC significantly (p<0.05) improved the impairment of short term or working memory induced by scopolamine in the Radial arm maze test, and significantly (p<0.05) reversed cognitive impairments in rats as measured by the learned helplessness test. In addition, MESC decreased escape latencies in the Morris water maze test. The activity of acetylcholinesterase in the brain was inhibited significantly (p<0.05) by treatment with MESC to a level similar to that observed in rats treated with piracetam. Moreover treatment with MESC (200 and 400 mg/kg, p.o.) to scopolamine induced rats significantly (p<0.05) decreased TBARS levels which was accompanied by an increase in the activities of SOD and Catalase. MESC has dose dependent effect and 400 mg/kg dose shown more prominent results when compared to 200 mg/kg dose of MESC. These results indicate that MESC may exert anti-amnesic activity via inhibition of acetylcholinesterase and antioxidant mechanisms in the brain.
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Mukherjee S, Dugad S, Bhandare R, Pawar N, Jagtap S, Pawar PK, Kulkarni O. Evaluation of comparative free-radical quenching potential of Brahmi (Bacopa monnieri) and Mandookparni (Centella asiatica). Ayu 2012; 32:258-64. [PMID: 22408313 PMCID: PMC3296351 DOI: 10.4103/0974-8520.92549] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Ayurvedic texts describe rejuvenate measures called Rasayana to impart biological sustenance to bodily tissues. Rasayana acting specifically on brain are called Medhya Rasayana. Brahmi is one of the most commonly practiced herbs for the same. Yet there exist a controversy regarding the exact plant species among Bacopa monnieri L. Penn (BM) and Centella asiatica (L.) Urban (CA) to be used as Brahmi in the formulations. Though the current literature available has suggested a very good nootropic potential of both the drugs, none of the studies have been carried out on comparative potential of these herbs to resolve the controversy. Free-radical scavenging potential for these plants is studied to find out their comparative efficacy. The study revealed a very good in vitro free-radical scavenging properties of aqueous and ethanolic extracts of both the plants as evidenced by FRAP, DPPH, reducing power, and antilipid peroxidation assays. It can be concluded from the studies that both the plants, although taxonomically totally different at family level, showed similar type of in vitro activities. The total phenolic and flavonoid contents also revealed a significant similarity in the two plants. The in vitro study supports the Ayurvedic concept of BM and CA having a similar potential.
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Affiliation(s)
- Sourav Mukherjee
- Herbal Biotechnology Laboratory, Interactive Research School for Health Affairs, Bharati Vidyapeeth University, Pune, India
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Ferulic acid potentiates pentobarbital-induced sleep via the serotonergic system. Neurosci Lett 2012; 525:95-9. [PMID: 22897877 DOI: 10.1016/j.neulet.2012.07.068] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2012] [Revised: 07/23/2012] [Accepted: 07/29/2012] [Indexed: 11/20/2022]
Abstract
Ferulic acid (4-hydroxy-3-methoxycinnamic acid, FA) is a widely distributed natural phenolic compound that is abundant in many plant tissues and foods. This study investigated possible mechanisms underlying the sedative-hypnotic effect of FA through behavioral pharmacology methods. FA showed dose-dependent sedative effects on locomotion activity in normal mice. FA also significantly potentiated pentobarbital-induced (45 mg/kg, i.p.) sleep by prolonging sleeping time and shortening sleep latency in a dose-dependent manner. These effects were augmented by the administration of 5-hydroxytryptophan (5-HTP), a precursor of 5-hydroxytryptamine (5-HT). With a sub-hypnotic dose of pentobarbital (25 mg/kg, i.p.), FA significantly increased the rate of sleep onset and exhibited a synergistic effect with 5-HTP (2.5 mg/kg, i.p.). Pretreatment with p-chlorophenylalanine (PCPA, an inhibitor of tryptophan hydroxylase) significantly decreased the duration of pentobarbital-induced sleep, whereas FA significantly reversed this effect. These results suggest that FA has sedative-hypnotic activity, possibly mediated by the serotonergic system.
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Kwon SH, Kim MJ, Ma SX, You IJ, Hwang JY, Oh JH, Kim SY, Kim HC, Lee SY, Jang CG. Eucommia ulmoides Oliv. Bark. protects against hydrogen peroxide-induced neuronal cell death in SH-SY5Y cells. JOURNAL OF ETHNOPHARMACOLOGY 2012; 142:337-345. [PMID: 22735663 DOI: 10.1016/j.jep.2012.04.010] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2011] [Revised: 03/20/2012] [Accepted: 04/08/2012] [Indexed: 06/01/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Eucommia ulmoides Oliv. Bark. (EUE), has commonly been used to fortify the muscles and lungs, lower blood pressure, prevent miscarriage, improve the tone of liver and kidneys, and promote longevity the traditional tonic medicines of Korea, China, and Japan. AIM OF THE STUDY In this study, we investigated that the neuroprotective activities and possible mechanisms of EUE aqueous extract in hydrogen peroxide (H(2)O(2))-induced neuronal cell death in human SH-SY5Y neuroblastoma cells. MATERIAL AND METHOD We examined the effects of EUE against H(2)O(2)-induced cytotoxicity, DNA condensation, the production of reactive oxygen species (ROS), loss of mitochondria membrane potential (MMP), the proteolysis of cleaved poly-ADP-ribose polymerase (PARP), and the expression of Bcl-2, Bcl-xL, cleaved caspase-3, and release of cytochrome c. Moreover, we attempted to determine whether EUE suppressed the 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. RESULTS Pretreatment with EUE increased cell viability and inhibited cytotoxicity and DNA condensation. EUE also attenuated the increase in ROS production and MMP reduction. Western blot data revealed that EUE inhibited H(2)O(2)-induced up- or down-regulation of cleaved PARP, cleaved caspase-3, Bcl-2, and Bcl-xL. The EUE inhibited release of cytochrome c from mitochondria to the cytosol, and significantly attenuated H(2)O(2)-induced phosphorylation of JNK, p38 MAPK, ERK 1/2, and PI3K/Akt. CONCLUSION The potent neuroprotective capacity of EUE, shown in these experiments, may potentially be applied in the prevention or treatment of neurodegenerative diseases such as Alzheimer's disease (AD).
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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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Andican G, Konukoglu D, Bozluolcay M, Bayülkem K, Firtiına S, Burcak G. Plasma oxidative and inflammatory markers in patients with idiopathic Parkinson's disease. Acta Neurol Belg 2012; 112:155-9. [PMID: 22426659 DOI: 10.1007/s13760-012-0015-3] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2011] [Accepted: 09/09/2011] [Indexed: 01/23/2023]
Abstract
Parkinson's disease (PD) is the most common neurodegenerative disorder after alzheimer's disease. Neuroinflammation and oxidative damage are implicated to be responsible for the pathogenesis of neurodegenerative diseases. However, there are a few studies showing the changes in the biomarkers for neuroinflammation and oxidative damage in neurodegenerative diseases. In our study we aimed to examine the role of the molecules that are involved in oxidative stress and inflammation in PD patients taking L: -dopa treatment. Oxidized-LDL (ox-LDL), high-sensitivity C-reactive protein (hs-CRP) and the soluble intracellular adhesion molecule (ICAM) were chosen as biomarkers for systemic inflammation and oxidative damage. The patients were classified according to the Hoehn-Yahr staging system. Forty-five idiopathic L: -dopa-given PD patients and 25 age-matched healthy controls were examined. Plasma ox-LDL and ICAM levels were significantly higher in PD patients when compared with controls (p < 0.001 and p < 0.05, respectively). PD patients at all stages had significantly higher plasma ox-LDL levels than controls (p < 0.001). Plasma ICAM levels at stage 1 and 2 and CRP levels at stage 2 patients were significantly higher than controls (p < 0.05, p < 0.05, and p < 0.01, respectively). We insist that further studies have to be conducted to establish neuroinflammation and oxidative damage in PD. Establishing the roles of these pathological processes in PD might be the key to effective therapy at an early stage by antioxidants and/or anti-inflammatory drugs.
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Dosumu OO, Akinola OB, Akang EN. Alcohol-induced testicular oxidative stress and cholesterol homeostasis in rats – The therapeutic potential of virgin coconut oil. MIDDLE EAST FERTILITY SOCIETY JOURNAL 2012. [DOI: 10.1016/j.mefs.2011.12.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
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Szwajgier D, Borowiec K. Phenolic acids from malt are efficient acetylcholinesterase and butyrylcholinesterase inhibitors. JOURNAL OF THE INSTITUTE OF BREWING 2012. [DOI: 10.1002/jib.5] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Dominik Szwajgier
- Department of Biotechnology, Human Nutrition and Science of Food Commodities; University of Natural Sciences; Skromna 8; 20-704; Lublin; Poland
| | - Kamila Borowiec
- Department of Biotechnology, Human Nutrition and Science of Food Commodities; University of Natural Sciences; Skromna 8; 20-704; Lublin; Poland
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Li S, Pu XP. Neuroprotective effect of kaempferol against a 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine-induced mouse model of Parkinson's disease. Biol Pharm Bull 2012; 34:1291-6. [PMID: 21804220 DOI: 10.1248/bpb.34.1291] [Citation(s) in RCA: 95] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
In the present study, we investigated the neuroprotective effects of kaempferol in the mouse model of Parkinson's disease, which was induced by neurotoxin 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP). We confirmed that MPTP led to behavioral deficits, depletion of dopamine and its metabolites, reduction in superoxide dismutase (SOD) and glutathione peroxidase (GSH-PX) activity, and the elevation of malondialdehyde (MDA) levels in the substantia nigra. When administered prior to MPTP, kaempferol improved motor coordination, raised striatal dopamine and its metabolite levels, increased SOD and GSH-PX activity, and reduced the content of MDA compared with mice treated with MPTP alone. Immunohistochemical studies using anti-tyrosine hydroxylase (TH) antibody showed that medication of kaempferol could prevent the loss of TH-positive neurons induced by MPTP. Taken together, we propose that kaempferol has shown anti-parkinsonian properties in our studies. More work is needed to explore detailed mechanisms of action.
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Affiliation(s)
- Shen Li
- National Key Research Laboratory of Natural and Biomimetic Drugs, Peking University, Beijing, China
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Beneficial Health Effects of Bioactive Compounds Present in Spices and Aromatic Herbs. ACTA ACUST UNITED AC 2012. [DOI: 10.1016/b978-0-444-59514-0.00004-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
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Williams RJ, Spencer JPE. Flavonoids, cognition, and dementia: actions, mechanisms, and potential therapeutic utility for Alzheimer disease. Free Radic Biol Med 2012; 52:35-45. [PMID: 21982844 DOI: 10.1016/j.freeradbiomed.2011.09.010] [Citation(s) in RCA: 296] [Impact Index Per Article: 24.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/22/2011] [Revised: 09/13/2011] [Accepted: 09/13/2011] [Indexed: 01/02/2023]
Abstract
There is increasing evidence that the consumption of flavonoid-rich foods can beneficially influence normal cognitive function. In addition, a growing number of flavonoids have been shown to inhibit the development of Alzheimer disease (AD)-like pathology and to reverse deficits in cognition in rodent models, suggestive of potential therapeutic utility in dementia. The actions of flavonoid-rich foods (e.g., green tea, blueberry, and cocoa) seem to be mediated by the direct interactions of absorbed flavonoids and their metabolites with a number of cellular and molecular targets. For example, their specific interactions within the ERK and PI3-kinase/Akt signaling pathways, at the level of receptors or kinases, have been shown to increase the expression of neuroprotective and neuromodulatory proteins and increase the number of, and strength of, connections between neurons. Concurrently, their effects on the vascular system may also lead to enhancements in cognitive performance through increased brain blood flow and an ability to initiate neurogenesis in the hippocampus. Additional mechanisms have been suggested for the ability of flavonoids to delay the initiation of and/or slow the progression of AD-like pathology and related neurodegenerative disorders, including a potential to inhibit neuronal apoptosis triggered by neurotoxic species (e.g., oxidative stress and neuroinflammation) or disrupt amyloid β aggregation and effects on amyloid precursor protein processing through the inhibition of β-secretase (BACE-1) and/or activation of α-secretase (ADAM10). Together, these processes act to maintain the number and quality of synaptic connections in key brain regions and thus flavonoids have the potential to prevent the progression of neurodegenerative pathologies and to promote cognitive performance.
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Affiliation(s)
- Robert J Williams
- Department of Biology and Biochemistry, University of Bath, Bath, UK
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Zhang QH, Wang WB, Li J, Chang YX, Wang YF, Zhang J, Zhang BL, Gao XM. Simultaneous determination of catechin, epicatechin and epicatechin gallate in rat plasma by LC–ESI-MS/MS for pharmacokinetic studies after oral administration of Cynomorium songaricum extract. J Chromatogr B Analyt Technol Biomed Life Sci 2012; 880:168-71. [DOI: 10.1016/j.jchromb.2011.11.021] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2011] [Revised: 10/28/2011] [Accepted: 11/11/2011] [Indexed: 11/16/2022]
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The neuroprotective potential of flavonoids: a multiplicity of effects. GENES AND NUTRITION 2011; 3:115-26. [PMID: 18937002 DOI: 10.1007/s12263-008-0091-4] [Citation(s) in RCA: 336] [Impact Index Per Article: 25.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Flavonoids exert a multiplicity of neuroprotective actions within the brain, including a potential to protect neurons against injury induced by neurotoxins, an ability to suppress neuroinflammation, and the potential to promote memory, learning and cognitive function. These effects appear to be underpinned by two common processes. Firstly, they interact with critical protein and lipid kinase signalling cascades in the brain leading to an inhibition of apoptosis triggered by neurotoxic species and to a promotion of neuronal survival and synaptic plasticity. Secondly, they induce beneficial effects on the vascular system leading to changes in cerebrovascular blood flow capable of causing angiogenesis, neurogenesis and changes in neuronal morphology. Through these mechanisms, the consumption of flavonoid-rich foods throughout life holds the potential to limit neurodegeneration and to prevent or reverse age-dependent loses in cognitive performance. The intense interest in the development of drugs capable of enhancing brain function means that flavonoids may represent important precursor molecules in the quest to develop of a new generation of brain enhancing drugs.
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