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Wei R, He JQ, Chen WH, Tam KY. Evaluations of the neuroprotective effects of a dual-target isoquinoline inhibitor in the triple transgenic mouse model of Alzheimer's disease. Neurosci Lett 2023; 802:137166. [PMID: 36889377 DOI: 10.1016/j.neulet.2023.137166] [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: 01/10/2023] [Revised: 02/21/2023] [Accepted: 03/03/2023] [Indexed: 03/08/2023]
Abstract
Alzheimer's disease (AD) patients exhibit neuropathological features, such as amyloid-beta (Aβ) plaques and neurogenic fibrillary tangles. These features are thought to play important pathogenic roles, including neuronal dysfunction and apoptosis in the disease progression. Herein, we systematically evaluated a previously reported dual-target isoquinoline inhibitor (9S) for cholinesterase and Aβ aggregation in in vitro and in vivo models of AD. 9S exhibited neuroprotective effects in Aβ-induced and PHF6-induced PC12 cell models as well as in an okadaic acid-induced SH-SY5Y cell model, which were due to attenuated neuronal apoptosis through modulations of GSK-3β phosphorylation and reactive oxygen species. One-month administration of 9S to triple transgenic AD (3 × Tg-AD) female mice (aged 6 months) led to significant improvement in cognitive deficits. Whereas similar treatment regimens for older 3 × Tg-AD female mice (aged 10 months) showed negligible neuroprotective effects. These findings suggest the importance of therapeutic intervention at the early stage of the disease.
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Affiliation(s)
- Rong Wei
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong 529020, PR China
| | - Jun-Qiu He
- Faculty of Health Sciences, University of Macau, Taipa, Macau SAR, PR China
| | - Wen-Hua Chen
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong 529020, PR China.
| | - Kin Yip Tam
- Faculty of Health Sciences, University of Macau, Taipa, Macau SAR, PR China.
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2
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Chen H, Zhu Y, Zhang YL, Zeng MN, Cao YG, Sun PT, Cao B, Du K, Zhao X, Wang XW, Zheng XK, Feng WS. Neolignans and amide alkaloids from the stems of Piper kadsura and their neuroprotective activity. PHYTOCHEMISTRY 2022; 203:113336. [PMID: 35933005 DOI: 10.1016/j.phytochem.2022.113336] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Revised: 07/05/2022] [Accepted: 07/20/2022] [Indexed: 06/15/2023]
Abstract
Four undescribed neolignans and three undescribed amide alkaloids, along with twelve known compounds, were isolated from the stems of Piper kadsura (Choisy) Ohwi. The structures of the new compounds were determined by spectroscopic analysis, quantum-chemical calculations, and Mo2(OAc)4-induced ECD analysis. The neuroprotective effects of these compounds against Aβ25-35-induced cell damage in PC12 cells were investigated, and eight compounds exhibited significant neuroprotective effects against Aβ25-35-induced PC12 cell damage, with the EC50 values of 3.06-29.3 μM. Three of these compounds were selected for further experiments, and they appear to reduce apoptosis and enhance autophagy against Aβ25-35-induced PC12 cell damage.
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Affiliation(s)
- Hui Chen
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, 450046, PR China; Co-Construction Collaborative Innovation Center for Chinese Medicine and Respiratory Diseases by Henan & Education Ministry of PR China, Zhengzhou, 450046, PR China; NMPA Key Laboratory for Quality Control of Traditional Chinese Medicine (Chinese Materia Medica and prepared slices), Zhengzhou, 450018, PR China.
| | - Ying Zhu
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, 450046, PR China
| | - Ya-Lun Zhang
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, 450046, PR China
| | - Meng-Nan Zeng
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, 450046, PR China; Co-Construction Collaborative Innovation Center for Chinese Medicine and Respiratory Diseases by Henan & Education Ministry of PR China, Zhengzhou, 450046, PR China
| | - Yan-Gang Cao
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, 450046, PR China
| | - Pan-Ting Sun
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, 450046, PR China
| | - Bing Cao
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, 450046, PR China
| | - Kun Du
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, 450046, PR China
| | - Xuan Zhao
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, 450046, PR China
| | - Xiao-Wei Wang
- NMPA Key Laboratory for Quality Control of Traditional Chinese Medicine (Chinese Materia Medica and prepared slices), Zhengzhou, 450018, PR China.
| | - Xiao-Ke Zheng
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, 450046, PR China; Co-Construction Collaborative Innovation Center for Chinese Medicine and Respiratory Diseases by Henan & Education Ministry of PR China, Zhengzhou, 450046, PR China
| | - Wei-Sheng Feng
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, 450046, PR China; Co-Construction Collaborative Innovation Center for Chinese Medicine and Respiratory Diseases by Henan & Education Ministry of PR China, Zhengzhou, 450046, PR China.
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3
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Forloni G, La Vitola P, Balducci C. Oligomeropathies, inflammation and prion protein binding. Front Neurosci 2022; 16:822420. [PMID: 36081661 PMCID: PMC9445368 DOI: 10.3389/fnins.2022.822420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2021] [Accepted: 07/28/2022] [Indexed: 11/13/2022] Open
Abstract
The central role of oligomers, small soluble aggregates of misfolded proteins, in the pathogenesis of neurodegenerative disorders is recognized in numerous experimental conditions and is compatible with clinical evidence. To underline this concept, some years ago we coined the term oligomeropathies to define the common mechanism of action of protein misfolding diseases like Alzheimer, Parkinson or prion diseases. Using simple experimental conditions, with direct application of synthetic β amyloid or α-synuclein oligomers intraventricularly at micromolar concentrations, we could detect differences and similarities in the biological consequences. The two oligomer species affected cognitive behavior, neuronal dysfunction and cerebral inflammatory reactions with distinct mechanisms. In these experimental conditions the proposed mediatory role of cellular prion protein in oligomer activities was not confirmed. Together with oligomers, inflammation at different levels can be important early in neurodegenerative disorders; both β amyloid and α-synuclein oligomers induce inflammation and its control strongly affects neuronal dysfunction. This review summarizes our studies with β-amyloid or α-synuclein oligomers, also considering the potential curative role of doxycycline, a well-known antibiotic with anti-amyloidogenic and anti-inflammatory activities. These actions are analyzed in terms of the therapeutic prospects.
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A single-molecule with multiple investigations: Synthesis, characterization, computational methods, inhibitory activity against Alzheimer's disease, toxicity, and ADME studies. Comput Biol Med 2022; 146:105514. [DOI: 10.1016/j.compbiomed.2022.105514] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Revised: 03/01/2022] [Accepted: 04/09/2022] [Indexed: 01/18/2023]
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5
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Saleem S, Banerjee R, Rajesh Kannan R. Chrysin-Loaded Chitosan Nanoparticle-Mediated Neuroprotection in Aβ 1-42-Induced Neurodegenerative Conditions in Zebrafish. ACS Chem Neurosci 2022; 13:2017-2034. [PMID: 35696319 DOI: 10.1021/acschemneuro.2c00240] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Amyloid β plaques and neurofibrillary tangles are the characteristic features of Alzheimer's disease (AD). Plaques of amyloid β play a pivotal role in affecting cognitive functions and memory. Alzheimer's disease is a progressive neurodegenerative disease and is one of the leading causes of dementia worldwide. Several treatment strategies focusing on the amyloid cascade have been implemented to treat AD. The blood-brain barrier (BBB) poses the main obstructive barrier by refraining drugs from penetrating the brain. Nanotechnology is a promising research field for brain drug delivery using nanosized particles. Zebrafish is emerging as a model of interest to elaborate on brain targeting and nanotechnology-based therapeutics for neurodegenerative diseases. In the current study, we have synthesized and characterized chrysin-loaded chitosan nanoparticles (Chr-Chi NPs) and evaluated them for neuroprotection against amyloid-β-induced toxicity. We find that treatment with Chr-Chi NPs helps to retain memory, cognition, and synaptic connections, which are otherwise compromised due to Aβ1-42 toxicity. The NPs further help in reducing aggregates of amyloid β, thus decreasing neuronal death and generation of reactive oxygen species (ROS). Taken together, our study brings to light a novel strategy for treating AD by a combined action on the neurons and amyloid aggregates mediated by chrysin and chitosan, respectively. Chr-Chi NPs, therefore, have the potential to provide a beneficial combinatorial treatment strategy for AD.
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Affiliation(s)
- Suraiya Saleem
- Neuroscience Lab, Centre for Molecular and Nanomedical Science, Centre for Nanoscience and Nanotechnology, School of Bio and Chemical Engineering, Sathyabama Institute of Science and Technology (Deemed to be University), Jeppiaar Nagar, Rajiv Gandhi Salai, Chennai 600119, Tamil Nadu, India
| | - Rachana Banerjee
- JIS Institute of Advanced Studies and Research, JIS University, Kolkata 700091, West Bengal, India
| | - Rajaretinam Rajesh Kannan
- Neuroscience Lab, Centre for Molecular and Nanomedical Science, Centre for Nanoscience and Nanotechnology, School of Bio and Chemical Engineering, Sathyabama Institute of Science and Technology (Deemed to be University), Jeppiaar Nagar, Rajiv Gandhi Salai, Chennai 600119, Tamil Nadu, India
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6
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Recent trends of natural based therapeutics for mitochondria targeting in Alzheimer’s disease. Mitochondrion 2022; 64:112-124. [DOI: 10.1016/j.mito.2022.03.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Revised: 03/23/2022] [Accepted: 03/28/2022] [Indexed: 12/13/2022]
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Baicalin Attenuated Aβ1-42-Induced Apoptosis in SH-SY5Y Cells by Inhibiting the Ras-ERK Signaling Pathway. BIOMED RESEARCH INTERNATIONAL 2022; 2022:9491755. [PMID: 35528169 PMCID: PMC9068334 DOI: 10.1155/2022/9491755] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Revised: 02/26/2022] [Accepted: 03/28/2022] [Indexed: 11/24/2022]
Abstract
Alzheimer's disease (AD) is a serious neurodegenerative disease. It is widely believed that the accumulation of amyloid beta (Aβ) in neurons around neurofibrillary plaques is the main pathological characteristic of AD; however, the molecular mechanism underlying these pathological changes is not clear. Baicalin is a flavonoid extracted from the dry root of Scutellaria baicalensis Georgi. Studies have shown that baicalin exerts excellent anti-inflammatory and neuroprotective effects. In this study, an AD cell model was established by exposing SH-SY5Y cells to Aβ1-42 and treating them with baicalin. Cell survival, cell cycle progression, and apoptosis were measured by MTT, flow cytometry, and immunofluorescence assays, respectively. The expression levels of Ras, ERK/ERK phosphorylation (p-ERK), and cyclin D1 were measured by Western blotting. In addition, whether the MEK activator could reverse the regulatory effect of baicalin on Ras-ERK signaling was investigated using Western blotting. We found that baicalin improved the survival, promoted the proliferation, and inhibited the apoptosis of SH-SY5Y cells after Aβ1-42 treatment. Baicalin also ameliorated Aβ1-42-induced cell cycle arrest at the S phase and induced apoptosis. Furthermore, baicalin inhibited the levels of Ras, p-ERK, and cyclin D1 induced by Aβ, and this effect could be reversed by the MEK activator. Therefore, we suggest that baicalin may regulate neuronal cell cycle progression and apoptosis in Aβ1-42-treated SH-SY5Y cells by inhibiting the Ras-ERK signaling pathway. This study suggested that baicalin might be a useful therapeutic agent for senile dementia, especially AD.
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Pan L, He Q, Wu Y, Zhang N, Cai H, Yang B, Wang Y, Li Y, Wu X. Synthesis, radiolabeling, and evaluation of a potent β-site APP cleaving enzyme (BACE1) inhibitor for PET imaging of BACE1 in vivo. Bioorg Med Chem Lett 2022; 59:128543. [PMID: 35031452 DOI: 10.1016/j.bmcl.2022.128543] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Revised: 12/24/2021] [Accepted: 01/09/2022] [Indexed: 02/05/2023]
Abstract
The β-site APP-cleaving enzyme 1 (BACE1) plays important roles in the proteolytic processing of amyloid precursor protein, and can be regarded as an important target for the diagnosis and treatment of AD. This study aimed to report the synthesis and evaluation of an 18F-labeled 2-amino-3,4-dihydroquinazoline analog as a potential BACE1 radioligand. A fluoropropyl side chain was introduced to the phenyl of this 3,4-dihydroquinazoline scaffold to generate the radioligand. Our preliminary data indicated that although the 2-amino-3,4-dihydroquinazoline scaffold possessed favorable in-vitro properties as a PET ligand, its poor brain uptake hindered the in-vivo imaging of BACE1. Further investigation would be required to optimize the scaffold for the development of a blood-brain-barrier-permeable BACE1-targeted PET ligand.
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Affiliation(s)
- Lili Pan
- Department of Nuclear Medicine, Laboratory of Clinical Nuclear Medicine, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Qian He
- Department of Emergency, West China Hospital, Sichuan University, Chengdu 610000, Sichuan, China
| | - Yi Wu
- Key Laboratory of Prevention and Treatment of Cardiovascular and Cerebrovascular Diseases, Ministry of Education, Gannan Medical University, Ganzhou 341000, China
| | - Ni Zhang
- Department of Psychiatry, West China Hospital of Sichuan University, Chengdu 610041, China
| | - Huawei Cai
- Department of Nuclear Medicine, Laboratory of Clinical Nuclear Medicine, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Bo Yang
- Department of Pharmacy, Panzhihua Central Hospital, Panzhihua, Sichuan, 617067, China
| | - Yuxi Wang
- Department of Respiratory and Critical Care Medicine, West China Medical School/West China Hospital, Sichuan University, Chengdu 610000, China
| | - Yunchun Li
- Department of Nuclear Medicine, Laboratory of Clinical Nuclear Medicine, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu 610041, China; Department of Nuclear Medicine, The Second People's Hospital of Yibin, Yibin 644000, Sichuan, China.
| | - Xiaoai Wu
- Department of Nuclear Medicine, Laboratory of Clinical Nuclear Medicine, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu 610041, China.
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9
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Wan W, Liu G, Li X, Liu Y, Wang Y, Pan H, Hu J. MiR-191-5p alleviates microglial cell injury by targeting Map3k12 (mitogen-activated protein kinase kinase kinase 12) to inhibit the MAPK (mitogen-activated protein kinase) signaling pathway in Alzheimer's disease. Bioengineered 2021; 12:12678-12690. [PMID: 34818971 PMCID: PMC8810200 DOI: 10.1080/21655979.2021.2008638] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Revised: 11/11/2021] [Accepted: 11/16/2021] [Indexed: 02/07/2023] Open
Abstract
Alzheimer's disease (AD) is a progressive neurodegenerative disease. Multiple reports have elucidated that microRNAs are promising biomarkers for AD diagnosis and treatment. Herein, the effect of miR-191-5p on microglial cell injury and the underlying mechanism were explored. APP/PS1 transgenic mice were utilized to establish mouse model of AD. Amyloid-β protein 1-42 (Aβ1-42)-treated microglia were applied to establish in vitro cell model of AD. MiR-191-5p expression in hippocampus and microglia was measured by reverse transcription quantitative polymerase chain reaction. The viability and apoptosis of microglia were evaluated by Cell Counting Kit-8 assays and flow cytometry analyses, respectively. The binding relationship between miR-191-5p and its downstream target mitogen-activated protein kinase kinase kinase 12 (Map3k12) was determined by luciferase reporter assays. Pathological degeneration of hippocampus was tested using hematoxylin-eosin staining and Nissl staining. Aβ expression in hippocampus was examined via immunohistochemistry. In this study, miR-191-5p was downregulated in Aβ1-42-stimulated microglia and hippocampal tissues of APP/PS1 mice. MiR-191-5p overexpression facilitated cell viability and inhibited apoptosis rate of Aβ1-42-treated microglia. Mechanically, miR-191-5p targeted Map3k12 3'-untranslated region to downregulate Map3k12 expression. MiR-191-5p inhibited Aβ1-42-induced microglial cell injury and inactivated the MAPK signaling by downregulating Map3k12. Overall, miR-191-5p alleviated Aβ1-42-induced microglia cell injury by targeting Map3k12 to inhibit the MAPK signaling pathway in microglia.
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Affiliation(s)
- Wenjun Wan
- Department of Rehabilitation Medicine, Wuhan Central Hospital Affiliated to Tongji Medical College of Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Ganzhe Liu
- Department of Neurology, Wuhan Central Hospital Affiliated to Tongji Medical College of Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Xia Li
- Department of Ultrasound Imaging, Hubei Provincial Hospital of Traditional Chinese Medicine, Wuhan, Hubei, China
| | - Yu Liu
- Department of Radiology, Hubei Provincial Hospital of Traditional Chinese Medicine, Wuhan, Hubei, China
| | - Ying Wang
- Department of Rehabilitation Medicine, Wuhan Central Hospital Affiliated to Tongji Medical College of Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Haisong Pan
- Department of Radiology, Hubei Provincial Hospital of Traditional Chinese Medicine, Wuhan, Hubei, China
| | - Jun Hu
- Department of Radiology, Hubei Provincial Hospital of Traditional Chinese Medicine, Wuhan, Hubei, China
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10
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Maafi N, Pidaný F, Maříková J, Korábečný J, Hulcová D, Kučera T, Schmidt M, Shammari LA, Špulák M, Carmen Catapano M, Mecava M, Prchal L, Kuneš J, Janoušek J, Kohelová E, Jenčo J, Nováková L, Cahlíková L. Derivatives of montanine-type alkaloids and their implication for the treatment of Alzheimer's disease: Synthesis, biological activity and in silico study. Bioorg Med Chem Lett 2021; 51:128374. [PMID: 34555506 DOI: 10.1016/j.bmcl.2021.128374] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Revised: 09/02/2021] [Accepted: 09/15/2021] [Indexed: 11/18/2022]
Abstract
Alzheimeŕs disease (AD) is the most common neurodegenerative disorder, characterized by neuronal loss and cognitive impairment. Currently, very few drugs are available for AD treatment, and a search for new therapeutics is urgently needed. Thus, in the current study, twenty-eight new derivatives of montanine-type Amaryllidaceae alkaloids were synthesized and evaluated for their ability to inhibit human recombinant acetylcholinesterase (hAChE) and butyrylcholinesterase (hBuChE). Three derivatives (1n, 1o, and 1p) with different substitution patterns demonstrated significant selective inhibitory potency for hAChE (IC50 < 5 µM), and one analog, 1v, showed selective hBuChE inhibition activity (IC50 = 1.73 ± 0.05 µM). The prediction of CNS availability, as disclosed by the BBB score, suggests that the active compounds in this survey should be able pass through the blood-brain barrier (BBB). Cytotoxicity screening and docking studies were carried out for the two most pronounced cholinesterase inhibitors, 1n and 1v.
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Affiliation(s)
- Negar Maafi
- ADINACO Research Group, Department of Pharmaceutical Botany, Faculty of Pharmacy, Charles University, Heyrovskeho 1203, 500 05 Hradec Kralove, Czech Republic
| | - Filip Pidaný
- ADINACO Research Group, Department of Pharmaceutical Botany, Faculty of Pharmacy, Charles University, Heyrovskeho 1203, 500 05 Hradec Kralove, Czech Republic
| | - Jana Maříková
- ADINACO Research Group, Department of Pharmaceutical Botany, Faculty of Pharmacy, Charles University, Heyrovskeho 1203, 500 05 Hradec Kralove, Czech Republic; Department of Bioorganic and Organic Chemistry, Faculty of Pharmacy, Charles University, Heyrovskeho 1203, 500 05 Hradec Kralove, Czech Republic
| | - Jan Korábečný
- Department of Toxicology and Military Pharmacy, Trebesska 1575, 500 05 Hradec Kralove, Czech Republic; Biomedical Research Centre, University Hospital Hradec Kralove, Sokolska 581, 500 05 Hradec Kralove, Czech Republic
| | - Daniela Hulcová
- ADINACO Research Group, Department of Pharmaceutical Botany, Faculty of Pharmacy, Charles University, Heyrovskeho 1203, 500 05 Hradec Kralove, Czech Republic; Department of Pharmacognosy, Faculty of Pharmacy, Charles University, Heyrovskeho 1203, 500 05 Hradec Kralove, Czech Republic
| | - Tomáš Kučera
- Department of Toxicology and Military Pharmacy, Trebesska 1575, 500 05 Hradec Kralove, Czech Republic
| | - Monika Schmidt
- Department of Chemistry, Faculty of Science, University of Hradec Kralove, Rokitanskeho 62, 500 03 Hradec Kralove, Czech Republic
| | - Latifah Al Shammari
- ADINACO Research Group, Department of Pharmaceutical Botany, Faculty of Pharmacy, Charles University, Heyrovskeho 1203, 500 05 Hradec Kralove, Czech Republic
| | - Marcel Špulák
- Department of Bioorganic and Organic Chemistry, Faculty of Pharmacy, Charles University, Heyrovskeho 1203, 500 05 Hradec Kralove, Czech Republic
| | - Maria Carmen Catapano
- Department of Analytical Chemistry, Faculty of Pharmacy, Charles University, Heyrovskeho 1203, 500 05 Hradec Kralove, Czech Republic
| | - Marko Mecava
- Biomedical Research Centre, University Hospital Hradec Kralove, Sokolska 581, 500 05 Hradec Kralove, Czech Republic
| | - Lukáš Prchal
- Biomedical Research Centre, University Hospital Hradec Kralove, Sokolska 581, 500 05 Hradec Kralove, Czech Republic
| | - Jiří Kuneš
- Department of Bioorganic and Organic Chemistry, Faculty of Pharmacy, Charles University, Heyrovskeho 1203, 500 05 Hradec Kralove, Czech Republic
| | - Jiří Janoušek
- ADINACO Research Group, Department of Pharmaceutical Botany, Faculty of Pharmacy, Charles University, Heyrovskeho 1203, 500 05 Hradec Kralove, Czech Republic; Department of Pharmacognosy, Faculty of Pharmacy, Charles University, Heyrovskeho 1203, 500 05 Hradec Kralove, Czech Republic
| | - Eliška Kohelová
- ADINACO Research Group, Department of Pharmaceutical Botany, Faculty of Pharmacy, Charles University, Heyrovskeho 1203, 500 05 Hradec Kralove, Czech Republic
| | - Jaroslav Jenčo
- ADINACO Research Group, Department of Pharmaceutical Botany, Faculty of Pharmacy, Charles University, Heyrovskeho 1203, 500 05 Hradec Kralove, Czech Republic
| | - Lucie Nováková
- Department of Analytical Chemistry, Faculty of Pharmacy, Charles University, Heyrovskeho 1203, 500 05 Hradec Kralove, Czech Republic
| | - Lucie Cahlíková
- ADINACO Research Group, Department of Pharmaceutical Botany, Faculty of Pharmacy, Charles University, Heyrovskeho 1203, 500 05 Hradec Kralove, Czech Republic.
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11
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Mamun AA, Pidaný F, Hulcová D, Maříková J, Kučera T, Schmidt M, Catapano MC, Hrabinová M, Jun D, Múčková L, Kuneš J, Janoušek J, Andrýs R, Nováková L, Peřinová R, Maafi N, Soukup O, Korábečný J, Cahlíková L. Amaryllidaceae Alkaloids of Norbelladine-Type as Inspiration for Development of Highly Selective Butyrylcholinesterase Inhibitors: Synthesis, Biological Activity Evaluation, and Docking Studies. Int J Mol Sci 2021; 22:8308. [PMID: 34361074 PMCID: PMC8348983 DOI: 10.3390/ijms22158308] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Revised: 07/26/2021] [Accepted: 07/28/2021] [Indexed: 01/01/2023] Open
Abstract
Alzheimer's disease (AD) is a multifactorial neurodegenerative condition of the central nervous system (CNS) that is currently treated by cholinesterase inhibitors and the N-methyl-d-aspartate receptor antagonist, memantine. Emerging evidence strongly supports the relevance of targeting butyrylcholinesterase (BuChE) in the more advanced stages of AD. Within this study, we have generated a pilot series of compounds (1-20) structurally inspired from belladine-type Amaryllidaceae alkaloids, namely carltonine A and B, and evaluated their acetylcholinesterase (AChE) and BuChE inhibition properties. Some of the compounds exhibited intriguing inhibition activity for human BuChE (hBuChE), with a preference for BuChE over AChE. Seven compounds were found to possess a hBuChE inhibition profile, with IC50 values below 1 µM. The most potent one, compound 6, showed nanomolar range activity with an IC50 value of 72 nM and an excellent selectivity pattern over AChE, reaching a selectivity index of almost 1400. Compound 6 was further studied by enzyme kinetics, along with in-silico techniques, to reveal the mode of inhibition. The prediction of CNS availability estimates that all the compounds in this survey can pass through the blood-brain barrier (BBB), as disclosed by the BBB score.
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Affiliation(s)
- Abdullah Al Mamun
- ADINACO Research Group, Department of Pharmaceutical Botany, Faculty of Pharmacy, Charles University, Heyrovskeho 1203, 500 05 Hradec Kralove, Czech Republic; (A.A.M.); (F.P.); (D.H.); (J.M.); (R.P.); (N.M.)
| | - Filip Pidaný
- ADINACO Research Group, Department of Pharmaceutical Botany, Faculty of Pharmacy, Charles University, Heyrovskeho 1203, 500 05 Hradec Kralove, Czech Republic; (A.A.M.); (F.P.); (D.H.); (J.M.); (R.P.); (N.M.)
| | - Daniela Hulcová
- ADINACO Research Group, Department of Pharmaceutical Botany, Faculty of Pharmacy, Charles University, Heyrovskeho 1203, 500 05 Hradec Kralove, Czech Republic; (A.A.M.); (F.P.); (D.H.); (J.M.); (R.P.); (N.M.)
- Department of Pharmacognosy, Faculty of Pharmacy, Charles University, Heyrovskeho 1203, 500 05 Hradec Kralove, Czech Republic;
| | - Jana Maříková
- ADINACO Research Group, Department of Pharmaceutical Botany, Faculty of Pharmacy, Charles University, Heyrovskeho 1203, 500 05 Hradec Kralove, Czech Republic; (A.A.M.); (F.P.); (D.H.); (J.M.); (R.P.); (N.M.)
- Department of Bioorganic and Organic Chemistry, Faculty of Pharmacy, Charles University, Heyrovskeho 1203, 500 05 Hradec Kralove, Czech Republic;
| | - Tomáš Kučera
- Department of Toxicology and Military Pharmacy, Faculty of Military Health Sciences, University of Defence, Trebesska 1575, 500 01 Hradec Kralove, Czech Republic; (T.K.); (M.H.); (D.J.); (L.M.); (O.S.)
| | - Monika Schmidt
- Department of Chemistry, Faculty of Science, University of Hradec Králové, Rokitanského 62, 500 03 Hradec Králové, Czech Republic; (M.S.); (R.A.)
| | - Maria Carmen Catapano
- Department of Analytical Chemistry, Faculty of Pharmacy, Charles University, Heyrovskeho 1203, 500 05 Hradec Kralove, Czech Republic; (M.C.C.); (L.N.)
| | - Martina Hrabinová
- Department of Toxicology and Military Pharmacy, Faculty of Military Health Sciences, University of Defence, Trebesska 1575, 500 01 Hradec Kralove, Czech Republic; (T.K.); (M.H.); (D.J.); (L.M.); (O.S.)
- Biomedical Research Centre, University Hospital Hradec Kralove, Sokolska 581, 500 05 Hradec Kralove, Czech Republic
| | - Daniel Jun
- Department of Toxicology and Military Pharmacy, Faculty of Military Health Sciences, University of Defence, Trebesska 1575, 500 01 Hradec Kralove, Czech Republic; (T.K.); (M.H.); (D.J.); (L.M.); (O.S.)
| | - Lubica Múčková
- Department of Toxicology and Military Pharmacy, Faculty of Military Health Sciences, University of Defence, Trebesska 1575, 500 01 Hradec Kralove, Czech Republic; (T.K.); (M.H.); (D.J.); (L.M.); (O.S.)
- Biomedical Research Centre, University Hospital Hradec Kralove, Sokolska 581, 500 05 Hradec Kralove, Czech Republic
| | - Jiří Kuneš
- Department of Bioorganic and Organic Chemistry, Faculty of Pharmacy, Charles University, Heyrovskeho 1203, 500 05 Hradec Kralove, Czech Republic;
| | - Jiří Janoušek
- Department of Pharmacognosy, Faculty of Pharmacy, Charles University, Heyrovskeho 1203, 500 05 Hradec Kralove, Czech Republic;
| | - Rudolf Andrýs
- Department of Chemistry, Faculty of Science, University of Hradec Králové, Rokitanského 62, 500 03 Hradec Králové, Czech Republic; (M.S.); (R.A.)
| | - Lucie Nováková
- Department of Analytical Chemistry, Faculty of Pharmacy, Charles University, Heyrovskeho 1203, 500 05 Hradec Kralove, Czech Republic; (M.C.C.); (L.N.)
| | - Rozálie Peřinová
- ADINACO Research Group, Department of Pharmaceutical Botany, Faculty of Pharmacy, Charles University, Heyrovskeho 1203, 500 05 Hradec Kralove, Czech Republic; (A.A.M.); (F.P.); (D.H.); (J.M.); (R.P.); (N.M.)
| | - Negar Maafi
- ADINACO Research Group, Department of Pharmaceutical Botany, Faculty of Pharmacy, Charles University, Heyrovskeho 1203, 500 05 Hradec Kralove, Czech Republic; (A.A.M.); (F.P.); (D.H.); (J.M.); (R.P.); (N.M.)
| | - Ondřej Soukup
- Department of Toxicology and Military Pharmacy, Faculty of Military Health Sciences, University of Defence, Trebesska 1575, 500 01 Hradec Kralove, Czech Republic; (T.K.); (M.H.); (D.J.); (L.M.); (O.S.)
- Biomedical Research Centre, University Hospital Hradec Kralove, Sokolska 581, 500 05 Hradec Kralove, Czech Republic
| | - Jan Korábečný
- Department of Toxicology and Military Pharmacy, Faculty of Military Health Sciences, University of Defence, Trebesska 1575, 500 01 Hradec Kralove, Czech Republic; (T.K.); (M.H.); (D.J.); (L.M.); (O.S.)
- Biomedical Research Centre, University Hospital Hradec Kralove, Sokolska 581, 500 05 Hradec Kralove, Czech Republic
| | - Lucie Cahlíková
- ADINACO Research Group, Department of Pharmaceutical Botany, Faculty of Pharmacy, Charles University, Heyrovskeho 1203, 500 05 Hradec Kralove, Czech Republic; (A.A.M.); (F.P.); (D.H.); (J.M.); (R.P.); (N.M.)
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12
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Marsh DT, Smid SD. Cannabis Phytochemicals: A Review of Phytocannabinoid Chemistry and Bioactivity as Neuroprotective Agents. Aust J Chem 2021. [DOI: 10.1071/ch20183] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
With the advent of medical cannabis usage globally, there has been a renewed interest in exploring the chemical diversity of this unique plant. Cannabis produces hundreds of unique phytocannabinoids, which not only have diverse chemical structures but also a range of cellular and molecular actions, interesting pharmacological properties, and biological actions. In addition, it produces other flavonoids, stilbenoids, and terpenes that have been variably described as conferring additional or so-called entourage effects to whole-plant extracts when used in therapeutic settings. This review explores this phytochemical diversity in relation to specific bioactivity ascribed to phytocannabinoids as neuroprotective agents. It outlines emergent evidence for the potential for selected phytocannabinoids and other cannabis phytochemicals to mitigate factors such as inflammation and oxidative stress as drivers of neurotoxicity, in addition to focusing on specific interactions with pathological misfolding proteins, such as amyloid β, associated with major forms of neurodegenerative diseases such as Alzheimer’s disease.
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13
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Deng Y, Zhang J, Sun X, Ma G, Luo G, Miao Z, Song L. miR-132 improves the cognitive function of rats with Alzheimer's disease by inhibiting the MAPK1 signal pathway. Exp Ther Med 2020; 20:159. [PMID: 33093897 PMCID: PMC7571341 DOI: 10.3892/etm.2020.9288] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Accepted: 05/28/2020] [Indexed: 12/11/2022] Open
Abstract
Alzheimer's disease (AD) is a common worldwide progressive neurodegenerative disease. The dysregulation of miRNA is crucial in neurodegenerative diseases and neuron apoptosis during AD and is closely associated with the MAPK pathway. By bioinformatic website, we found that there was target inhibiting relationship between microRNA (miR)-132 and MAPK1. Therefore, the current study speculated that miR-132 could improve the cognitive function of rats with AD by inhibiting MAPK1 expression. To verify our hypothesis, 10 normal rats and 60 rats with AD were selected and divided into model, Ad-miR-132 negative control (NC), Ad-miR-132, Ad-small interfering (si)MAPK1 NC, Ad-siMAPK1 and Ad-miR-132 + Ad-MAPK1 groups. Rats were evaluated for learning by performing morris water maze tests and pathological changes of the hippocampus were assessed via HE staining. Additionally, hippocampus cell apoptosis was determined using a TUNEL assay and levels of acetylcholinesterase (AChE), reactive oxygen species (ROS), malondialdehyde (MDA), superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px) were evaluated in sera via ELISA. The mRNA and protein expression of miR-132, iNOS, MAPK1 and phosphorylated (p)-MAPK1 was determined in hippocampus tissues via reverse transcription-quantitative PCR and western blotting, respectively. Compared with normal mice, rats with AD had significantly decreased learning abilities, increased cell apoptosis rates, increased levels of AChE, iNOS, ROS, MDA, MAPK1 and p-MAPK1 and decreased levels of SOD, GSH-Px and miR-132. Upregulation of miR-132 group improved the above indictors and silencing MAKP1 worsened the condition of rats. miR-132 upregulation therefore reversed the negative effects caused by MAPK1 silencing in rats with AD. In conclusion, miR-132 inhibited hippocampal iNOS expression and oxidative stress by inhibiting MAPK1expression to improve the cognitive function of rats with AD.
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Affiliation(s)
- Yiming Deng
- Department of Interventional Neuroradiology, Beijing Tiantan Hospital, Capital Medical University, Beijing 100070, P.R. China.,China National Clinical Research Center for Neurological Diseases, Beijing 100070, P.R. China
| | - Jingyu Zhang
- Department of Interventional Neuroradiology, Beijing Tiantan Hospital, Capital Medical University, Beijing 100070, P.R. China.,China National Clinical Research Center for Neurological Diseases, Beijing 100070, P.R. China
| | - Xuan Sun
- Department of Interventional Neuroradiology, Beijing Tiantan Hospital, Capital Medical University, Beijing 100070, P.R. China.,China National Clinical Research Center for Neurological Diseases, Beijing 100070, P.R. China
| | - Gaoting Ma
- Department of Interventional Neuroradiology, Beijing Tiantan Hospital, Capital Medical University, Beijing 100070, P.R. China.,China National Clinical Research Center for Neurological Diseases, Beijing 100070, P.R. China
| | - Gang Luo
- Department of Interventional Neuroradiology, Beijing Tiantan Hospital, Capital Medical University, Beijing 100070, P.R. China.,China National Clinical Research Center for Neurological Diseases, Beijing 100070, P.R. China
| | - Zhongrong Miao
- Department of Interventional Neuroradiology, Beijing Tiantan Hospital, Capital Medical University, Beijing 100070, P.R. China.,China National Clinical Research Center for Neurological Diseases, Beijing 100070, P.R. China
| | - Ligang Song
- Department of Interventional Neuroradiology, Beijing Tiantan Hospital, Capital Medical University, Beijing 100070, P.R. China.,China National Clinical Research Center for Neurological Diseases, Beijing 100070, P.R. China
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14
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Wen-Xia H, Zhong-Wen H, Min J, Han Z, Wei-Ze L, Li-Bin Y, Fei L, Lu H, Ning Z, Xiao-Feng L. Five novel and highly efficient endophytic fungi isolated from Huperzia serrata expressing huperzine A for the treatment of Alzheimer's disease. Appl Microbiol Biotechnol 2020; 104:9159-9177. [PMID: 32970179 DOI: 10.1007/s00253-020-10894-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Revised: 08/30/2020] [Accepted: 09/05/2020] [Indexed: 10/23/2022]
Abstract
Huperzine A (Hup A) is an important drug for treating Alzheimer's disease (AD) and mainly extracted from the Huperzia serrata (Thunb.) Trevis. (Lycopodiaceae) (HS). Nevertheless, the content of Hup A in HS is very low of 0.007% with growing circle of 8 to 10 years, and the chemical synthesis of Hup A still has some insurmountable limitations in the industrialized production. So, the available resources of Hup A for clinical treatment of AD are scarce. The purpose of this work was to construct a biosynthesis platform based on the endophytic fungi from HS. In this work, five endophytic fungi Mucor racemosus NSH-D, Mucor fragilis NSY-1, Fusarium verticillioides NSH-5, Fusarium oxysporum NSG-1, and Trichoderma harzianum NSW-V were firstly found and isolated from the Chinese folk medicine HS, which were identified according to their morphological characteristics and nuclear ribosomal DNA ITS sequences. The highest efficient fungus could effectively biosynthesize Hup A in a liquid culture of 319.8 ± 0.17 mg/L which were 112 times higher than that of other reported conventional endophytic fungi. Moreover, these fungi with higher hereditary stability could possess the initial expressing ability of Hup A after 40 generations, and the expressed Hup A from these biosynthesis systems has prior physicochemical properties, a better inhibition activity of acetylcholinesterase and a lower cytotoxicity compared with the listed active pharmaceutical ingredients (APIs) of Hup A. These results provide promising alternative resources for producing Hup A at an industrial scale by biosynthesis, and it may also shed light on millions of AD patients. KEY POINTS: • Five novel endophytic fungi with high stability could highly express prior Hup A Graphical abstract.
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Affiliation(s)
- Han Wen-Xia
- College of Medical Technology, Xi'an Medical University, Xi'an, 710021, People's Republic of China
| | - Han Zhong-Wen
- Department of Oncology, Fushan Hospital of Traditional Chinese Medicine of Tumor, Shijiazhuang, 050200, People's Republic of China
| | - Jia Min
- Shaanxi Key Laboratory of Ischemic Cardiovascular Disease, Institute of Basic and Translational Medicine, Xi'an Medical University, Xi'an, 710021, Shaanxi, People's Republic of China
| | - Zhang Han
- College of Pharmacy, Xi'an Medical University, Xinwang road 1, Weiyang Zone, Xi'an, 710021, People's Republic of China
| | - Li Wei-Ze
- College of Pharmacy, Xi'an Medical University, Xinwang road 1, Weiyang Zone, Xi'an, 710021, People's Republic of China.
| | - Yang Li-Bin
- College of Pharmacy, Xi'an Medical University, Xinwang road 1, Weiyang Zone, Xi'an, 710021, People's Republic of China
| | - Liang Fei
- College of Pharmacy, Xi'an Medical University, Xinwang road 1, Weiyang Zone, Xi'an, 710021, People's Republic of China
| | - Han Lu
- College of Pharmacy, Xi'an Medical University, Xinwang road 1, Weiyang Zone, Xi'an, 710021, People's Republic of China
| | - Zhao Ning
- College of Pharmacy, Xi'an Medical University, Xinwang road 1, Weiyang Zone, Xi'an, 710021, People's Republic of China
| | - Li Xiao-Feng
- College of Medical Technology, Xi'an Medical University, Xi'an, 710021, People's Republic of China
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15
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Luo W, Ip FCF, Fu G, Cheung K, Tian Y, Hu Y, Sinha A, Cheng EYL, Wu X, Bustos V, Greengard P, Li YM, Sinha SC, Ip NY. A Pentacyclic Triterpene from Ligustrum lucidum Targets γ-Secretase. ACS Chem Neurosci 2020; 11:2827-2835. [PMID: 32786303 DOI: 10.1021/acschemneuro.0c00389] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Amyloid-beta peptides generated by β-secretase- and γ-secretase-mediated successive cleavage of amyloid precursor protein are believed to play a causative role in Alzheimer's disease. Thus, reducing amyloid-beta generation by modulating γ-secretase remains a promising approach for Alzheimer's disease therapeutic development. Here, we screened fruit extracts of Ligustrum lucidum Ait. (Oleaceae) and identified active fractions that increase the C-terminal fragment of amyloid precursor protein and reduce amyloid-beta production in a neuronal cell line. These fractions contain a mixture of two isomeric pentacyclic triterpene natural products, 3-O-cis- or 3-O-trans-p-coumaroyl maslinic acid (OCMA), in different ratios. We further demonstrated that trans-OCMA specifically inhibits γ-secretase and decreases amyloid-beta levels without influencing cleavage of Notch. By using photoactivatable probes targeting the subsites residing in the γ-secretase active site, we demonstrated that trans-OCMA selectively affects the S1 subsite of the active site in this protease. Treatment of Alzheimer's disease transgenic model mice with trans-OCMA or an analogous carbamate derivative of a related pentacyclic triterpene natural product, oleanolic acid, rescued the impairment of synaptic plasticity. This work indicates that the naturally occurring compound trans-OCMA and its analogues could become a promising class of small molecules for Alzheimer's disease treatment.
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Affiliation(s)
- Wenjie Luo
- Laboratory of Molecular and Cellular Neuroscience, The Rockefeller University, New York, New York 10065, United States
| | - Fanny C. F. Ip
- Division of Life Science, State Key Laboratory of Molecular Neuroscience, and Molecular Neuroscience Center, The Hong Kong University of Science and Technology, Clear Water Bay Road, Kowloon, Hong Kong, China
- Hong Kong Center for Neurodegenerative Diseases, Hong Kong Science Park, Hong Kong, China
- Guangdong Provincial Key Laboratory of Brain Science, Disease and Drug Development, Shenzhen−Hong Kong Institute of Brain Science, HKUST Shenzhen Research Institute, Shenzhen, Guangdong, China 518057
| | - Guangmiao Fu
- Division of Life Science, State Key Laboratory of Molecular Neuroscience, and Molecular Neuroscience Center, The Hong Kong University of Science and Technology, Clear Water Bay Road, Kowloon, Hong Kong, China
| | - Kit Cheung
- Division of Life Science, State Key Laboratory of Molecular Neuroscience, and Molecular Neuroscience Center, The Hong Kong University of Science and Technology, Clear Water Bay Road, Kowloon, Hong Kong, China
| | - Yuan Tian
- Laboratory of Molecular and Cellular Neuroscience, The Rockefeller University, New York, New York 10065, United States
| | - Yueqing Hu
- Division of Life Science, State Key Laboratory of Molecular Neuroscience, and Molecular Neuroscience Center, The Hong Kong University of Science and Technology, Clear Water Bay Road, Kowloon, Hong Kong, China
| | - Anjana Sinha
- Laboratory of Molecular and Cellular Neuroscience, The Rockefeller University, New York, New York 10065, United States
| | - Elaine Y. L. Cheng
- Division of Life Science, State Key Laboratory of Molecular Neuroscience, and Molecular Neuroscience Center, The Hong Kong University of Science and Technology, Clear Water Bay Road, Kowloon, Hong Kong, China
| | - Xianzhong Wu
- Chemical Biology Program, Memorial Sloan Kettering Cancer Center, New York, New York 10065, United States
| | - Victor Bustos
- Laboratory of Molecular and Cellular Neuroscience, The Rockefeller University, New York, New York 10065, United States
| | - Paul Greengard
- Laboratory of Molecular and Cellular Neuroscience, The Rockefeller University, New York, New York 10065, United States
| | - Yue-Ming Li
- Chemical Biology Program, Memorial Sloan Kettering Cancer Center, New York, New York 10065, United States
| | - Subhash C. Sinha
- Laboratory of Molecular and Cellular Neuroscience, The Rockefeller University, New York, New York 10065, United States
| | - Nancy Y. Ip
- Division of Life Science, State Key Laboratory of Molecular Neuroscience, and Molecular Neuroscience Center, The Hong Kong University of Science and Technology, Clear Water Bay Road, Kowloon, Hong Kong, China
- Hong Kong Center for Neurodegenerative Diseases, Hong Kong Science Park, Hong Kong, China
- Guangdong Provincial Key Laboratory of Brain Science, Disease and Drug Development, Shenzhen−Hong Kong Institute of Brain Science, HKUST Shenzhen Research Institute, Shenzhen, Guangdong, China 518057
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16
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Özcan K. Antibacterial, antioxidant and enzyme inhibition activity capacities of Doronicum macrolepis (FREYN&SINT): An endemic plant from Turkey. Saudi Pharm J 2020; 28:95-100. [PMID: 31920435 PMCID: PMC6950946 DOI: 10.1016/j.jsps.2019.11.010] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Accepted: 11/29/2019] [Indexed: 01/04/2023] Open
Abstract
In the present study, the antioxidant, enzyme inhibition (α-amylase, α-glucosidase, and cholinesterase) and antimicrobial (MIC) activities of three different solvent (ethanol, methanol, or ethyl acetate) extracts of stem, root, and flower of Doronicum macrolepis plant were investigated. In addition to this, the chemical composition and the antimicrobial activity of the essential oil were determined. Antioxidant activity was detected using ABTS and DPPH assays. Antimicrobial activity evaluated by microdilution method against to nineteen microorganisms. Also, enzyme inhibition activities were determined by colorimetric methods. Essential oil of the plant extracted by hydrodistilation and characterized using GC/MS. The antioxidant properties of the flower were determined to be higher than those of the other segments of this plant. Moreover, the total phenolic and flavonoid contents were also found to be higher in the flower parts. The highest enzyme inhibition activity was observed to be α-amylase (221.54 mmol ACAE/g extract) in flower ethylacetate extract, α-glucosidase (15.32 mmol ACAE/g extract) in flower ethanol extract, and cholinesterase (AChE: 2.4 and BChE: 22.35 mg GALE/g extract) in stem ethylacetate extract. Besides them, the antimicrobial activity of the essential oil was found to be higher than the extracts. It showed a high level of inhibition especially on E. coli at 4 µg/ml concentration. Moreover, remarkable inhibition was observed for two candida strains tested. In conclusion, the results suggest that, because of its bioactivity including the antioxidant, antimicrobial, and enzyme inhibition properties, the D. macrolepis can be accepted as a promising and natural source for the industrial applications. The present study is the first study, in which the bioactive components and the antioxidant, antimicrobial, and enzyme inhibition properties of endemic D. macrolepis plant were determined.
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Affiliation(s)
- Kadriye Özcan
- Department of Genetics and Bioengineering, Giresun University, Giresun, Turkey
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17
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Zhang ZJ, Zhu QF, Wu XD, Zhao QS. Phlegmadines B and C, two Lycopodium alkaloids with 6/5/5/5/7 pentacyclic skeleton from Phlegmariurus phlegmaria. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2019.151381] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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18
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De Simone A, Naldi M, Tedesco D, Bartolini M, Davani L, Andrisano V. Advanced analytical methodologies in Alzheimer’s disease drug discovery. J Pharm Biomed Anal 2020; 178:112899. [DOI: 10.1016/j.jpba.2019.112899] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Revised: 09/25/2019] [Accepted: 09/26/2019] [Indexed: 12/13/2022]
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Mitochondrial Dysfunction and Alpha-Lipoic Acid: Beneficial or Harmful in Alzheimer's Disease? OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2019; 2019:8409329. [PMID: 31885820 PMCID: PMC6914903 DOI: 10.1155/2019/8409329] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Accepted: 09/30/2019] [Indexed: 12/31/2022]
Abstract
Alzheimer's disease (AD) is a neurodegenerative disorder characterised by impairments in the cognitive domains associated with orientation, recording, and memory. This pathology results from an abnormal deposition of the β-amyloid (Aβ) peptide and the intracellular accumulation of neurofibrillary tangles. Mitochondrial dysfunctions play an important role in the pathogenesis of AD, due to disturbances in the bioenergetic properties of cells. To date, the usual therapeutic drugs are limited because of the diversity of cellular routes in AD and the toxic potential of these agents. In this context, alpha-lipoic acid (α-LA) is a well-known fatty acid used as a supplement in several health conditions and diseases, such as periphery neuropathies and neurodegenerative disorders. It is produced in several cell types, eukaryotes, and prokaryotes, showing antioxidant and anti-inflammatory properties. α-LA acts as an enzymatic cofactor able to regulate metabolism, energy production, and mitochondrial biogenesis. In addition, the antioxidant capacity of α-LA is associated with two thiol groups that can be oxidised or reduced, prevent excess free radical formation, and act on improvement of mitochondrial performance. Moreover, α-LA has mechanisms of epigenetic regulation in genes related to the expression of various inflammatory mediators, such PGE2, COX-2, iNOS, TNF-α, IL-1β, and IL-6. Regarding the pharmacokinetic profile, α-LA has rapid uptake and low bioavailability and the metabolism is primarily hepatic. However, α-LA has low risk in prolonged use, although its therapeutic potential, interactions with other substances, and adverse reactions have not been well established in clinical trials with populations at higher risk for diseases of aging. Thus, this review aimed to describe the pharmacokinetic profile, bioavailability, therapeutic efficacy, safety, and effects of combined use with centrally acting drugs, as well as report in vitro and in vivo studies that demonstrate the mitochondrial mechanisms of α-LA involved in AD protection.
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20
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Shen G, Li Y, Zhao L, Wu H. Functional Peptides and Small Molecules in Medicinal Chemistry-Part II. Curr Top Med Chem 2019; 19:186. [PMID: 30950336 DOI: 10.2174/156802661903190328160356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Guohua Shen
- Laboratory of Clinical Nuclear Medicine, Department of Nuclear Medicine, West China Hospital, Sichuan University, Chengdu (610041), China
| | - Yiwen Li
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu (610065), China
| | - Linjie Zhao
- Division of Regenerative Medicine, Department of Medicine, University of California, San Diego, CA, United States
| | - Haoxing Wu
- Huaxi MR Research Center, Department of Radiology, West China Hospital and West China School of Medicine, Sichuan University, Chengdu (610041), China
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