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Rezaul Islam M, Akash S, Murshedul Islam M, Sarkar N, Kumer A, Chakraborty S, Dhama K, Ahmed Al-Shaeri M, Anwar Y, Wilairatana P, Rauf A, Halawani IF, Alzahrani FM, Khan H. Alkaloids as drug leads in Alzheimer's treatment: Mechanistic and therapeutic insights. Brain Res 2024; 1834:148886. [PMID: 38582413 DOI: 10.1016/j.brainres.2024.148886] [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: 02/10/2024] [Revised: 03/22/2024] [Accepted: 03/23/2024] [Indexed: 04/08/2024]
Abstract
Alzheimer's disease (AD) has few effective treatment options and continues to be a major global health concern. AD is a neurodegenerative disease that typically affects elderly people. Alkaloids have potential sources for novel drug discovery due to their diverse chemical structures and pharmacological activities. Alkaloids, natural products with heterocyclic nitrogen-containing structures, are considered potential treatments for AD. This review explores the neuroprotective properties of alkaloids in AD, focusing on their ability to regulate pathways such as amyloid-beta aggregation, oxidative stress, synaptic dysfunction, tau hyperphosphorylation, and neuroinflammation. The FDA has approved alkaloids such as acetylcholinesterase inhibitors like galantamine and rivastigmine. This article explores AD's origins, current market medications, and clinical applications of alkaloids in AD therapy. This review explores the development of alkaloid-based drugs for AD, focusing on pharmacokinetics, blood-brain barrier penetration, and potential adverse effects. Future research should focus on the clinical evaluation of promising alkaloids, developing recently discovered alkaloids, and the ongoing search for novel alkaloids for medical treatment. A pharmaceutical option containing an alkaloid may potentially slow down the progression of AD while enhancing its symptoms. This review highlights the potential of alkaloids as valuable drug leads in treating AD, providing a comprehensive understanding of their mechanisms of action and therapeutic implications.
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Affiliation(s)
- Md Rezaul Islam
- Department of Pharmacy, Faculty of Allied Health Sciences, Daffodil International University, Daffodil Smart City, Birulia, Savar, Dhaka 1216, Bangladesh
| | - Shopnil Akash
- Department of Pharmacy, Faculty of Allied Health Sciences, Daffodil International University, Daffodil Smart City, Birulia, Savar, Dhaka 1216, Bangladesh
| | - Mohammed Murshedul Islam
- Department of Pharmacy, Faculty of Allied Health Sciences, Daffodil International University, Daffodil Smart City, Birulia, Savar, Dhaka 1216, Bangladesh
| | - Nadia Sarkar
- Department of Pharmacy, Faculty of Allied Health Sciences, Daffodil International University, Daffodil Smart City, Birulia, Savar, Dhaka 1216, Bangladesh
| | - Ajoy Kumer
- Laboratory of Computational Research for Drug Design and Material Science, Department of Chemistry, College of Arts and Sciences IUBAT-International University of Business Agriculture and Technology, 4 Embankment Drive Road, Sector 10, Uttara Model Town, Dhaka 1230, Bangladesh; Center for Global Health Research, Saveetha Medical College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, India
| | - Sandip Chakraborty
- State Disease Investigation Laboratory, ARDD, Abhoynagar, Agartala, West Tripura, Pin-799005, India
| | - Kuldeep Dhama
- Division of Pathology, Indian Veterinary Research Institute (IVRI) Izatnagar-243 122, Bareilly, Uttar Pradesh, India
| | - Majed Ahmed Al-Shaeri
- Department of Biological Sciences, Faculty of Science, King Abdulaziz University, Jeddah 21441, Kingdom of Saudi Arabia
| | - Yasir Anwar
- Department of Biological Sciences, Faculty of Science, King Abdulaziz University, Jeddah 21441, Kingdom of Saudi Arabia
| | - Polrat Wilairatana
- Department of Clinical Tropical Medicine, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand
| | - Abdur Rauf
- Department of Chemistry, University of Swabi, Anbar 23561, Khyber Pakhtunkhwa, Pakistan
| | - Ibrahim F Halawani
- Department of Clinical Laboratories Sciences, College of Applied Medical Sciences, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
| | - Fuad M Alzahrani
- Department of Clinical Laboratories Sciences, College of Applied Medical Sciences, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
| | - Haroon Khan
- Department of Pharmacy, Abdul Wali Khan University Mardan, 23200 Mardan, Pakistan.
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Ansari F, Sohel M, Haidary MMH, Mostaq MS, Akter S, Nahar A, Labony FZ, Ahmed A, Hasan MS, Babu MH, Amin MN. Therapeutic potential of clinically proven natural products in the management of dementia. Heliyon 2024; 10:e27233. [PMID: 38533051 PMCID: PMC10963206 DOI: 10.1016/j.heliyon.2024.e27233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2023] [Revised: 02/25/2024] [Accepted: 02/26/2024] [Indexed: 03/28/2024] Open
Abstract
Dementia is a common neurodegenerative disorder connected to damage to nerve cells in the brain. Although some conventional drugs are available for dementia treatments and are still sanctified for dementia patients, their short- and long-term side effects and other limitations make treating patients more challenging. The authors aimed to explain novel options for treating dementia with natural products and unravel some clinically proven natural products. This article systematically reviewed recent studies that have investigated the role of natural products and their bioactive compounds for dementia. PubMed Central, Scopus, and Google Scholar databases of articles were collected, and abstracts were reviewed for relevance to the subject matter.In this review, we provide mechanistic insights of clinically validated natural products, including like- Yokukansan, Souvenaid, BDW, Hupergene, Bacopa monnier, Omega-3, Tramiprostate and Palmitoylethanolamide with which have therapeutic efficacy against dementia in the management of dementia. As shown by studies, certain natural ingredients could be used to treat and prevent dementia. We strongly believe that the medicinal plants and phytoconstituents alone or in combination with other compounds would be effective treatments against dementia with lesser side effects as compared to currently available treatments. Moreover, these products should be studied further in order to develop novel dementia medications.
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Affiliation(s)
- Farzana Ansari
- Department of Biochemistry and Molecular Biology, Laboratory of Nutrition and Health Research, University of Dhaka, Dhaka, 1000, Bangladesh
| | - Md Sohel
- Department of Biochemistry and Molecular Biology, Mawlana Bhashani Science and Technology University, Santosh, Tangail, 1902, Bangladesh
- Pratyasha Health Biomedical Research Center, Dhaka, 1230, Bangladesh
| | | | - Md Saqline Mostaq
- Department of Pharmacy, University of Asia Pacific, Dhaka, 1205, Bangladesh
| | - Shamima Akter
- Department of Pharmacy, Atish Dipankar University of Science and Technology, Dhaka, 1230. Bangladesh
| | - Asrafun Nahar
- Department of Pharmacy, Atish Dipankar University of Science and Technology, Dhaka, 1230. Bangladesh
| | | | - Arman Ahmed
- Department of Pharmacy, Noakhali Science and Technology University, Noakhali, 3814, Bangladesh
| | - Mohammed Shamim Hasan
- Department of Pharmacy, Noakhali Science and Technology University, Noakhali, 3814, Bangladesh
| | - Mohammad Hasem Babu
- Department of Pharmacy, Atish Dipankar University of Science and Technology, Dhaka, 1230. Bangladesh
| | - Mohammad Nurul Amin
- Pratyasha Health Biomedical Research Center, Dhaka, 1230, Bangladesh
- Department of Pharmacy, Atish Dipankar University of Science and Technology, Dhaka, 1230. Bangladesh
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Vaaland IC, López Ó, Puerta A, Fernandes MX, Padrón JM, Fernández-Bolaños JG, Sydnes MO, Lindbäck E. Investigation of the enantioselectivity of acetylcholinesterase and butyrylcholinesterase upon inhibition by tacrine-iminosugar heterodimers. J Enzyme Inhib Med Chem 2023; 38:349-360. [DOI: 10.1080/14756366.2022.2150762] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
Affiliation(s)
- I. Caroline Vaaland
- Department of Chemistry, Bioscience and Environmental Engineering, Faculty of Science and Technology, University of Stavanger, Stavanger, Norway
| | - Óscar López
- Departamento de Química Orgánica, Facultad de Química, Universidad de Sevilla, Seville, Spain
| | - Adrián Puerta
- BioLab, Instituto Universitario de Bio-Orgánica “Antonio González” (IUBO-AG), Universidad de La Laguna, c/Astrofísico Francisco Sánchez, La Laguna, Spain
| | - Miguel X. Fernandes
- BioLab, Instituto Universitario de Bio-Orgánica “Antonio González” (IUBO-AG), Universidad de La Laguna, c/Astrofísico Francisco Sánchez, La Laguna, Spain
| | - José M. Padrón
- BioLab, Instituto Universitario de Bio-Orgánica “Antonio González” (IUBO-AG), Universidad de La Laguna, c/Astrofísico Francisco Sánchez, La Laguna, Spain
| | | | - Magne O. Sydnes
- Department of Chemistry, Bioscience and Environmental Engineering, Faculty of Science and Technology, University of Stavanger, Stavanger, Norway
| | - Emil Lindbäck
- Department of Chemistry, Bioscience and Environmental Engineering, Faculty of Science and Technology, University of Stavanger, Stavanger, Norway
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Xu JB, Miao SX, Gao F, Wan LX. Palladium-catalyzed synthesis and acetylcholinesterase inhibitory activity evaluation of 1-arylhuperzine A derivatives. JOURNAL OF ASIAN NATURAL PRODUCTS RESEARCH 2023; 25:1097-1109. [PMID: 37098899 DOI: 10.1080/10286020.2023.2196619] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 03/23/2023] [Accepted: 03/25/2023] [Indexed: 06/19/2023]
Abstract
A series of arylated huperzine A (HPA) derivatives (1-24) were efficiently synthesized in good yields (45-88% yields) through the late-stage modification of structurally complex natural anti-Alzheimer's disease (AD) drug huperzine A (HPA), using the palladium-catalyzed Suzuki-Miyaura cross-coupling reaction. The acetylcholinesterase (AChE) inhibitory activity of all synthesized compounds was evaluated to screen the potential anti-AD bioactive molecules. The results showed that introducing the aryl groups to C-1 position of HPA resulted in the unsatisfactory AChE inhibitory activity. The present study demonstrably verifies pyridone carbonyl group could be the necessary and unchangeable pharmacophore for maintaining HPA's anti-AChE potency, and provides the helpful information on the further research for developing anti-AD HPA analogues.
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Affiliation(s)
- Jin-Bu Xu
- Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Shi-Xing Miao
- Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Feng Gao
- Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Lin-Xi Wan
- Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs, School of Life Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China
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Cao Y, Yin D, Pang B, Li H, Liu Q, Zhai Y, Ma N, Shen H, Jia Q, Wang D. Assembly and phylogenetic analysis of the mitochondrial genome of endangered medicinal plant Huperzia crispata. Funct Integr Genomics 2023; 23:295. [PMID: 37691055 DOI: 10.1007/s10142-023-01223-9] [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: 04/19/2023] [Revised: 08/08/2023] [Accepted: 08/28/2023] [Indexed: 09/12/2023]
Abstract
Huperzia crispata is a traditional Chinese herb plant and has attracted special attention in recent years for its products Hup A can serve as an acetylcholinesterase inhibitor (AChEI). Although the chloroplast (cp) genome of H. crispata has been studied, there are no reports regarding the Huperzia mitochondrial (mt) genome since the previously reported H. squarrosa has been revised as Phlegmariurus squarrosus. The mt genome of H. crispata was sequenced using a combination of long-read nanopore and Illumina sequencing platforms. The entire H. crispata mt genome was assembled in a circular with a length of 412,594 bp and a total of 91 genes, including 45 tRNAs, 6 rRNAs, 37 protein-coding genes (PCGs), and 3 pseudogenes. Notably, the rps8 gene was present in P. squarrosus and a pseudogene rps8 was presented in H. crispata, which was lacking in most of Pteridophyta and Gymnospermae. Intron-encoded maturase (mat-atp9i85 and mat-cobi787) genes were present in H. crispata and P. squarrosus, but lost in other examined lycophytes, ferns, and Gymnospermae plants. Collinearity analysis showed that the mt genome of H. crispata and P. squarrossus is highly conservative compared to other ferns. Relative synonymous codon usage (RSCU) analysis showed that the amino acids most frequently found were phenylalanine (Phe) (4.77%), isoleucine (Ile) (4.71%), lysine (Lys) (4.26%), while arginine (Arg) (0.32%), and histidine (His) (0.42%) were rarely found. Simple sequence repeats (SSR) analysis revealed that a total of 114 SSRs were identified in the mt genome of H. crispata and account for 0.35% of the whole mt genome. Monomer repeats were the majority types of SSRs and represent 91.89% of the total SSRs. In addition, a total of 1948 interspersed repeats (158 forward, 147 palindromic, and 5 reverse repeats) with a length ranging from 30 bp to 14,945 bp were identified in the H. crispata mt genome and the 30-39-bp repeats were the most abundant type. Gene transfer analysis indicated that a total of 12 homologous fragments were discovered between the cp and mt genomes of H. crispata, accounting for 0.93% and 2.48% of the total cp and mt genomes, respectively. The phylogenetic trees revealed that H. crispata was the sister of P. squarrosus. The Ka/Ks analysis results suggested that most PCGs, except atp6 gene, were subject to purification selection during evolution. Our study provides extensive information on the features of the H. crispata mt genome and will help unravel evolutionary relationships, and molecular identification within lycophytes.
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Affiliation(s)
- Yu Cao
- Key Laboratory of Plant Secondary Metabolism Regulation in Zhejiang Province, College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Zhejiang, 310018, Hangzhou, China
| | - Dengpan Yin
- Key Laboratory of Plant Secondary Metabolism Regulation in Zhejiang Province, College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Zhejiang, 310018, Hangzhou, China
| | - Bo Pang
- Key Laboratory of Plant Secondary Metabolism Regulation in Zhejiang Province, College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Zhejiang, 310018, Hangzhou, China
| | - Haibo Li
- Yuyao Seedling Management Station, Ningbo, Zhejiang, 315400, China
| | - Qiao Liu
- Key Laboratory of Plant Secondary Metabolism Regulation in Zhejiang Province, College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Zhejiang, 310018, Hangzhou, China
| | - Yufeng Zhai
- Key Laboratory of Plant Secondary Metabolism Regulation in Zhejiang Province, College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Zhejiang, 310018, Hangzhou, China
| | - Nan Ma
- Key Laboratory of Plant Secondary Metabolism Regulation in Zhejiang Province, College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Zhejiang, 310018, Hangzhou, China
| | - Hongjun Shen
- Ningbo Delai Medicinal Material Planting Co, Ltd, 315444, Ningbo, Zhejiang, 315444, China
| | - Qiaojun Jia
- Key Laboratory of Plant Secondary Metabolism Regulation in Zhejiang Province, College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Zhejiang, 310018, Hangzhou, China
| | - Dekai Wang
- Key Laboratory of Plant Secondary Metabolism Regulation in Zhejiang Province, College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Zhejiang, 310018, Hangzhou, China.
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6
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Le TT, Trang NT, Pham VTT, Quang DN, Phuong Hoa LT. Bioactivities of β-mangostin and its new glycoside derivatives synthesized by enzymatic reactions. ROYAL SOCIETY OPEN SCIENCE 2023; 10:230676. [PMID: 37593716 PMCID: PMC10427817 DOI: 10.1098/rsos.230676] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Accepted: 07/19/2023] [Indexed: 08/19/2023]
Abstract
Beta-mangostin is a xanthone commonly found in the genus Garcinia. Unlike α-mangostin, to date, there have only been a few studies on the biological activity and derivatization of β-mangostin. In this study, two novel glycosylated derivatives of β-mangostin were successfully synthesized via a one-pot enzymatic reaction. These derivatives were characterized as β-mangostin 6-O-β-d-glucopyranoside and β-mangostin 6-O-β-d-2-deoxyglucopyranoside by TOF ESI/MS and 1H and 13C NMR analyses. Beta-mangostin showed cytotoxicity against KB, MCF7, A549 and HepG2 cancer cell lines, with IC50 values ranging from 15.42 to 21.13 µM. The acetylcholinesterase and α-glucosidase inhibitory activities of β-mangostin were determined with IC50 values of 2.17 and 27.61 µM, respectively. A strong anti-microbial activity of β-mangostin against Gram-positive strains (Bacillus subtilis, Lactobacillus fermentum and Staphylococcus aureus) was observed, with IC50 values of 0.16, 0.18 and 1.24 µg ml-1, respectively. Beta-mangostin showed weaker activity against Gram-negative strains (Salmonella enterica, Escherichia coli and Pseudomonas aeruginosa) as well as Candida albicans fungus, with IC50 and MIC values greater than the tested concentration (greater than 32 µg ml-1). The new derivatives of β-mangostin showed weaker activities than those of β-mangostin, demonstrating the important role of the hydroxyl group at C-6 of β-mangostin in its bioactivity.
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Affiliation(s)
- Tuoi Thi Le
- Faculty of Biology, Hanoi National University of Education, 136 Xuan Thuy, Cau Giay, Hanoi 100000, Vietnam
| | - Nguyen Thu Trang
- Faculty of Biology, Hanoi National University of Education, 136 Xuan Thuy, Cau Giay, Hanoi 100000, Vietnam
| | - Van Thuy Thi Pham
- Institute of Microbiology and Biotechnology, Vietnam National University, 144 Xuan Thuy, Cau Giay, Hanoi 100000, Vietnam
| | - Dang Ngoc Quang
- Faculty of Chemistry, Hanoi National University of Education, 136 Xuan Thuy, Cau Giay, Hanoi 100000, Vietnam
| | - Le Thi Phuong Hoa
- Faculty of Biology, Hanoi National University of Education, 136 Xuan Thuy, Cau Giay, Hanoi 100000, Vietnam
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Zhang Y, Xu JB, Xiao Y, Ji WS, Shan LH, Wan LX, Zhou XL, Lei Y, Gao F. Palladium-Catalyzed Synthesis, Acetylcholinesterase Inhibition, and Neuroprotective Activities of N-Aryl Galantamine Analogues. JOURNAL OF NATURAL PRODUCTS 2023; 86:939-946. [PMID: 36808969 DOI: 10.1021/acs.jnatprod.2c01150] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
A series of new N-aryl galantamine analogues (5a-5x) were designed and synthesized by modification of galantamine, using Pd-catalyzed Buchwald-Hartwig cross-coupling reaction in good to excellent yields. The cholinesterase inhibitory and neuroprotective activities of N-aryl derivatives of galantamine were evaluated. Among the synthesized compounds, the 4-methoxylpyridine-galantamine derivative (5q) (IC50 = 0.19 μM) exhibited excellent acetylcholinesterase inhibition activity, as well as significant neuroprotective effect against H2O2-induced injury in SH-SY5Y cells. Molecular docking, staining, and Western blotting analyses were performed to demonstrate the mechanism of action of 5q. Derivative 5q would be a promising multifunctional lead compound for the treatment of Alzheimer's disease.
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Affiliation(s)
- Yang Zhang
- Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs, School of Life Science and Engineering, Southwest Jiaotong University, Chengdu 610031, People's Republic of China
| | - Jin-Bu Xu
- Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs, School of Life Science and Engineering, Southwest Jiaotong University, Chengdu 610031, People's Republic of China
| | - Yao Xiao
- Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs, School of Life Science and Engineering, Southwest Jiaotong University, Chengdu 610031, People's Republic of China
| | - Wan-Sheng Ji
- Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs, School of Life Science and Engineering, Southwest Jiaotong University, Chengdu 610031, People's Republic of China
| | - Lian-Hai Shan
- Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs, School of Life Science and Engineering, Southwest Jiaotong University, Chengdu 610031, People's Republic of China
| | - Lin-Xi Wan
- West China School of Pharmacy, Sichuan University, Chengdu 610041, People's Republic of China
| | - Xian-Li Zhou
- Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs, School of Life Science and Engineering, Southwest Jiaotong University, Chengdu 610031, People's Republic of China
| | - Yu Lei
- Department of Pharmacy, The First Affiliated Hospital of Chengdu Medical College, Chengdu 610500, People's Republic of China
| | - Feng Gao
- Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs, School of Life Science and Engineering, Southwest Jiaotong University, Chengdu 610031, People's Republic of China
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Bhilare NV, Marulkar VS, Kumar D, Chatap VK, Patil KS, Shirote PJ. An insight into prodrug strategy for the treatment of Alzheimer’s disease. Med Chem Res 2022. [DOI: 10.1007/s00044-022-02859-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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Kamli MR, Sharaf AAM, Sabir JSM, Rather IA. Phytochemical Screening of Rosmarinus officinalis L. as a Potential Anticholinesterase and Antioxidant-Medicinal Plant for Cognitive Decline Disorders. PLANTS (BASEL, SWITZERLAND) 2022; 11:plants11040514. [PMID: 35214846 PMCID: PMC8877369 DOI: 10.3390/plants11040514] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Revised: 02/08/2022] [Accepted: 02/09/2022] [Indexed: 06/13/2023]
Abstract
The inhibition of acetylcholinesterase (AChE) by cholinergic agents has been promoted as a potent strategy for treating and managing cognitive decline disorders. A wide range of natural products has long been used as potential sources or formulations of cholinergic inhibitors. Therefore, this study aimed to evaluate different Rosmarinus officinalis L. (R. officinalis) extracts for their AChE inhibitory activity using galanthamine as a standard AChE inhibitor. In this study, the ethyl-acetate extract (at a concentration of 250 µg/mL) exhibited the greatest inhibitory effect against AChE with significant inhibition of 75%, comparable to the inhibitor galanthamine with an inhibition of 88%. Kinetic analysis revealed that the extracts could induce a mixed type of inhibition, as observed in the case of galanthamine, with the highest increased Km and decreased Vmax values in the ethyl acetate extract. The antioxidant potential of the three extracts tested was found to be in the order of ethyl-acetate > ethanol > aqueous, with IC50 values of 272 µg/mL, 387 µg/mL, and 534 µg/mL, respectively. Ethyl-acetate was found to have the highest total phenolic content in all extracts. Further, in silico study showed structural binding characterization of rosmarinic acid and carnosic acid with human AChE enzyme. Rosmarinic acid showed strong binding and formed two hydrogen-bonding interactions with Ser-293 and Arg-296. In light of this, the ethyl-acetate extract of the plant may provide some novel potential pharmacological leads for treating and managing cognitive disorders such as Alzheimer's.
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Affiliation(s)
- Majid Rasool Kamli
- Department of Biological Sciences, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia;
- Center of Excellence in Bionanoscience Research, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | | | - Jamal S. M. Sabir
- Department of Biological Sciences, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia;
- Center of Excellence in Bionanoscience Research, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Irfan A. Rather
- Department of Biological Sciences, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia;
- Center of Excellence in Bionanoscience Research, King Abdulaziz University, Jeddah 21589, Saudi Arabia
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Dhahri M, Alghrably M, Mohammed HA, Badshah SL, Noreen N, Mouffouk F, Rayyan S, Qureshi KA, Mahmood D, Lachowicz JI, Jaremko M, Emwas AH. Natural Polysaccharides as Preventive and Therapeutic Horizon for Neurodegenerative Diseases. Pharmaceutics 2021; 14:1. [PMID: 35056897 PMCID: PMC8777698 DOI: 10.3390/pharmaceutics14010001] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Revised: 11/27/2021] [Accepted: 12/03/2021] [Indexed: 01/06/2023] Open
Abstract
Neurodegenerative diseases are a serious and widespread global public health burden amongst aging populations. The total estimated worldwide global cost of dementia was US$818 billion in 2015 and has been projected to rise to 2 trillion US$ by 2030. While advances have been made to understand different neurodegenerative disease mechanisms, effective therapeutic strategies do not generally exist. Several drugs have been proposed in the last two decades for the treatment of different types of neurodegenerative diseases, with little therapeutic benefit, and often with severe adverse and side effects. Thus, the search for novel drugs with higher efficacy and fewer drawbacks is an ongoing challenge in the treatment of neurodegenerative disease. Several natural compounds including polysaccharides have demonstrated neuroprotective and even therapeutic effects. Natural polysaccharides are widely distributed in plants, animals, algae, bacterial and fungal species, and have received considerable attention for their wide-ranging bioactivity, including their antioxidant, anti-neuroinflammatory, anticholinesterase and anti-amyloidogenic effects. In this review, we summarize different mechanisms involved in neurodegenerative diseases and the neuroprotective effects of natural polysaccharides, highlighting their potential role in the prevention and therapy of neurodegenerative disease.
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Affiliation(s)
- Manel Dhahri
- Biology Department, Faculty of Science Yanbu, Taibah University, Yanbu El-Bahr 46423, Saudi Arabia;
| | - Mawadda Alghrably
- Division of Biological and Environmental Sciences and Engineering (BESE), King Abdullah University of Science and Technology (KAUST), Thuwal 23955, Saudi Arabia; (M.A.); (M.J.)
| | - Hamdoon A. Mohammed
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, Qassim University, Buraydah 51452, Saudi Arabia;
- Department of Pharmacognosy, Faculty of Pharmacy, Al-Azhar University, Cairo 11371, Egypt
| | - Syed Lal Badshah
- Department of Chemistry, Islamia College University, Peshawar 25120, Pakistan; (S.L.B.); (N.N.)
| | - Noreen Noreen
- Department of Chemistry, Islamia College University, Peshawar 25120, Pakistan; (S.L.B.); (N.N.)
| | - Fouzi Mouffouk
- Department of Chemistry, Faculty of Science, Kuwait University, Safat 13060, Kuwait;
| | - Saleh Rayyan
- Chemistry Department, Birzeit University, Birzeit P627, Palestine;
| | - Kamal A. Qureshi
- Department of Pharmaceutics, Unaizah College of Pharmacy, Qassim University, Unaizah 51911, Saudi Arabia;
| | - Danish Mahmood
- Department of Pharmacology and Toxicology, Unaizah College of Pharmacy, Qassim University, Unaizah 51911, Saudi Arabia;
| | - Joanna Izabela Lachowicz
- Department of Medical Sciences and Public Health, Università di Cagliari, Cittadella Universitaria, 09042 Monserrato, Italy
| | - Mariusz Jaremko
- Division of Biological and Environmental Sciences and Engineering (BESE), King Abdullah University of Science and Technology (KAUST), Thuwal 23955, Saudi Arabia; (M.A.); (M.J.)
| | - Abdul-Hamid Emwas
- Core Labs, King Abdullah University of Science and Technology, Thuwal 23955, Saudi Arabia
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Koppula S, Akther M, Haque ME, Kopalli SR. Potential Nutrients from Natural and Synthetic Sources Targeting Inflammaging-A Review of Literature, Clinical Data and Patents. Nutrients 2021; 13:nu13114058. [PMID: 34836313 PMCID: PMC8617641 DOI: 10.3390/nu13114058] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Revised: 11/06/2021] [Accepted: 11/11/2021] [Indexed: 12/16/2022] Open
Abstract
Inflammaging, the steady development of the inflammatory state over age is an attributable characteristic of aging that potentiates the initiation of pathogenesis in many age-related disorders (ARDs) including neurodegenerative diseases, arthritis, cancer, atherosclerosis, type 2 diabetes, and osteoporosis. Inflammaging is characterized by subclinical chronic, low grade, steady inflammatory states and is considered a crucial underlying cause behind the high mortality and morbidity rate associated with ARDs. Although a coherent set of studies detailed the underlying pathomechanisms of inflammaging, the potential benefits from non-toxic nutrients from natural and synthetic sources in modulating or delaying inflammaging processes was not discussed. In this review, the available literature and recent updates of natural and synthetic nutrients that help in controlling inflammaging process was explored. Also, we discussed the clinical trial reports and patent claims on potential nutrients demonstrating therapeutic benefits in controlling inflammaging and inflammation-associated ARDs.
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Affiliation(s)
- Sushruta Koppula
- Department of Integrated Biosciences, College of Biomedical & Health Science, Konkuk University, Chungju 27381, Korea; (S.K.); (M.A.)
| | - Mahbuba Akther
- Department of Integrated Biosciences, College of Biomedical & Health Science, Konkuk University, Chungju 27381, Korea; (S.K.); (M.A.)
| | - Md Ezazul Haque
- Department of Applied Life Science, Graduate School, BK21 Program, Konkuk University, Chungju 27381, Korea;
| | - Spandana Rajendra Kopalli
- Department of Bioscience and Biotechnology, Sejong University, Gwangjin-gu, Seoul 05006, Korea
- Correspondence: ; Tel.: +82-2-6935-2619
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12
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Huperzine A and Its Neuroprotective Molecular Signaling in Alzheimer's Disease. Molecules 2021; 26:molecules26216531. [PMID: 34770940 PMCID: PMC8587556 DOI: 10.3390/molecules26216531] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 10/20/2021] [Accepted: 10/21/2021] [Indexed: 11/30/2022] Open
Abstract
Huperzine A (HupA), an alkaloid found in the club moss Huperzia serrata, has been used for centuries in Chinese folk medicine to treat dementia. The effects of this alkaloid have been attributed to its ability to inhibit the cholinergic enzyme acetylcholinesterase (AChE), acting as an acetylcholinesterase inhibitor (AChEI). The biological functions of HupA have been studied both in vitro and in vivo, and its role in neuroprotection appears to be a good therapeutic candidate for Alzheimer´s disease (AD). Here, we summarize the neuroprotective effects of HupA on AD, with an emphasis on its interactions with different molecular signaling avenues, such as the Wnt signaling, the pre- and post-synaptic region mechanisms (synaptotagmin, neuroligins), the amyloid precursor protein (APP) processing, the amyloid-β peptide (Aβ) accumulation, and mitochondrial protection. Our goal is to provide an integrated overview of the molecular mechanisms through which HupA affects AD.
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Senol Deniz FS, Eren G, Orhan IE, Sener B, Ozgen U, Aldaba R, Calis I. Outlining In Vitro and In Silico Cholinesterase Inhibitory Activity of Twenty-Four Natural Products of Various Chemical Classes: Smilagenin, Kokusaginine, and Methyl Rosmarinate as Emboldening Inhibitors. Molecules 2021; 26:molecules26072024. [PMID: 33916300 PMCID: PMC8037418 DOI: 10.3390/molecules26072024] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Revised: 03/18/2021] [Accepted: 03/23/2021] [Indexed: 12/04/2022] Open
Abstract
Cholinesterase (ChE) inhibition is an important treatment strategy for Alzheimer’s disease (AD) as acetylcholinesterase (AChE) and butyrylcholinesterase (BChE) are involved in the pathology of AD. In the current work, ChE inhibitory potential of twenty-four natural products from different chemical classes (i.e., diosgenin, hecogenin, rockogenin, smilagenin, tigogenin, astrasieversianins II and X, astragalosides I, IV, and VI, cyclocanthosides E and G, macrophyllosaponins A-D, kokusaginin, lamiide, forsythoside B, verbascoside, alyssonoside, ipolamide, methyl rosmarinate, and luteolin-7-O-glucuronide) was examined using ELISA microtiter assay. Among them, only smilagenin and kokusaginine displayed inhibitory action against AChE (IC50 = 43.29 ± 1.38 and 70.24 ± 2.87 µg/mL, respectively). BChE was inhibited by only methyl rosmarinate and kokusaginine (IC50 = 41.46 ± 2.83 and 61.40 ± 3.67 µg/mL, respectively). IC50 values for galantamine as the reference drug were 1.33 ± 0.11 µg/mL for AChE and 52.31 ± 3.04 µg/mL for BChE. Molecular docking experiments showed that the orientation of smilagenin and kokusaginine was mainly driven by the interactions with the peripheral anionic site (PAS) comprising residues of hAChE, while kokusaginine and methyl rosmarinate were able to access deeper into the active gorge in hBChE. Our data indicate that similagenin, kokusaginine, and methyl rosmarinate could be hit compounds for designing novel anti-Alzheimer agents.
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Affiliation(s)
- F. Sezer Senol Deniz
- Department of Pharmacognosy, Faculty of Pharmacy, Gazi University, 06330 Ankara, Turkey; (F.S.S.D.); (B.S.)
| | - Gokcen Eren
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Gazi University, 06330 Ankara, Turkey;
| | - Ilkay Erdogan Orhan
- Department of Pharmacognosy, Faculty of Pharmacy, Gazi University, 06330 Ankara, Turkey; (F.S.S.D.); (B.S.)
- Correspondence:
| | - Bilge Sener
- Department of Pharmacognosy, Faculty of Pharmacy, Gazi University, 06330 Ankara, Turkey; (F.S.S.D.); (B.S.)
| | - Ufuk Ozgen
- Department of Pharmacognosy, Faculty of Pharmacy, Karadeniz Technical University, 61080 Trabzon, Turkey;
| | - Randa Aldaba
- Department of Pharmacognosy, Faculty of Pharmacy, Near East University, 99138 Nicosia, Turkey; (R.A.); (I.C.)
| | - Ihsan Calis
- Department of Pharmacognosy, Faculty of Pharmacy, Near East University, 99138 Nicosia, Turkey; (R.A.); (I.C.)
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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: 9] [Impact Index Per Article: 2.3] [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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Norditerpenoids with Selective Anti-Cholinesterase Activity from the Roots of Perovskia atriplicifolia Benth. Int J Mol Sci 2020; 21:ijms21124475. [PMID: 32586060 PMCID: PMC7352922 DOI: 10.3390/ijms21124475] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Revised: 06/16/2020] [Accepted: 06/19/2020] [Indexed: 12/23/2022] Open
Abstract
Inhibition of cholinesterases remains one of a few available treatment strategies for neurodegenerative dementias such as Alzheimer’s disease and related conditions. The current study was inspired by previous data on anticholinesterase properties of diterpenoids from Perovskia atriplicifolia and other Lamiaceae species. The acetylcholinesterase (AChE) and butyrylcholinesterase (BChE) inhibition by the three new natural compounds—(1R,15R)-1-acetoxycryptotanshinone (1), (1R)-1-acetoxytanshinone IIA (2), and (15R)-1-oxoaegyptinone A (3)—as well as, new for this genus, isograndifoliol (4) were assessed. Three of these compounds exhibited profound inhibition of butyrylcholinesterase (BChE) and much weaker inhibition of acetylcholinesterase (AChE). All compounds (1–4) selectively inhibited BChE (IC50 = 2.4, 7.9, 50.8, and 0.9 µM, respectively), whereas only compounds 3 and 4 moderately inhibited AChE (IC50 329.8 µM and 342.9 µM). Molecular docking and in silico toxicology prediction studies were also performed on the active compounds. Natural oxygenated norditerpenoids from the traditional Central Asian medicinal plant P. atriplicifolia are selective BChE inhibitors. Their high potential makes them useful candidate molecules for further investigation as lead compounds in the development of a natural drug against dementia caused by neurodegenerative diseases.
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16
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Zaki AG, El-Sayed ESR, Abd Elkodous M, El-Sayyad GS. Microbial acetylcholinesterase inhibitors for Alzheimer's therapy: recent trends on extraction, detection, irradiation-assisted production improvement and nano-structured drug delivery. Appl Microbiol Biotechnol 2020; 104:4717-4735. [PMID: 32285176 PMCID: PMC7223626 DOI: 10.1007/s00253-020-10560-9] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Revised: 03/09/2020] [Accepted: 03/18/2020] [Indexed: 12/17/2022]
Abstract
Abstract Neurodegenerative disorders especially Alzheimer’s disease (AD) are significantly threatening the public health. Acetylcholinesterase (AChE) inhibitors are compounds of great interest which can be used as effective agents for the symptomatic treatment of AD. Although plants are considered the largest source for these types of inhibitors, the microbial production of AChE inhibitors represents an efficient, easily manipulated, eco-friendly, cost-effective, and alternative approach. This review highlights the recent advances on the microbial production of AChE inhibitors and summarizes all the previously reported successful studies on isolation, screening, extraction, and detecting methodologies of AChE inhibitors from the microbial fermentation, from the earliest trials to the most promising anti-AD drug, huperzine A (HupA). In addition, improvement strategies for maximizing the industrial production of AChE inhibitors by microbes will be discussed. Finally, the promising applications of nano-material-based drug delivery systems for natural AChE inhibitor (HupA) will also be summarized. Key Points • AChE inhibitors are potential therapies for Alzheimer’s disease. • Microorganisms as alternate sources for prospective production of such inhibitors. • Research advances on extraction, detection, and strategies for production improvement. • Nanotechnology-based approaches for an effective drug delivery for Alzheimer’s disease.
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Affiliation(s)
- Amira G Zaki
- Plant Research Department, Nuclear Research Center, Egyptian Atomic Energy Authority (EAEA), Cairo, Egypt.
| | - El-Sayed R El-Sayed
- Plant Research Department, Nuclear Research Center, Egyptian Atomic Energy Authority (EAEA), Cairo, Egypt
| | - M Abd Elkodous
- Department of Electrical and Electronic Information Engineering, Toyohashi University of Technology, Toyohashi, Aichi, 441-8580, Japan.,Center for Nanotechnology (CNT), School of Engineering and Applied Sciences, Nile University, Sheikh Zayed, Giza, 16453, Egypt
| | - Gharieb S El-Sayyad
- Drug Microbiology Lab, Drug Radiation Research Department, National Center for Radiation Research and Technology (NCRRT), Egyptian Atomic Energy Authority (EAEA), Cairo, Egypt. .,Chemical Engineering Department, Egyptian Armed Forces, Military Technical College (MTC), Cairo, Egypt.
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17
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Mahran E, El Gamal I, Keusgen M, Morlock GE. Effect-directed analysis by high-performance thin-layer chromatography for bioactive metabolites tracking in Primula veris flower and Primula boveana leaf extracts. J Chromatogr A 2019; 1605:460371. [DOI: 10.1016/j.chroma.2019.460371] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Revised: 07/12/2019] [Accepted: 07/13/2019] [Indexed: 12/22/2022]
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18
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Karahisar E, Tugay O, Orhan IE, Sezer Senol Deniz F, Vlad Luca S, Skalicka-Wozniak K, Sahin M. Metabolite Profiling by Hyphenated Liquid Chromatographic Mass Spectrometric Technique (HPLC-DAD-ESI-Q-TOF-MS/MS) and Neurobiological Potential of Haplophyllum sahinii and H. vulcanicum Extracts. Chem Biodivers 2019; 16:e1900333. [PMID: 31365785 DOI: 10.1002/cbdv.201900333] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2019] [Accepted: 07/12/2019] [Indexed: 11/06/2022]
Abstract
In the current study, the ethanol extracts of flower, stem, and root parts of two endemic Turkish species, e. g., Haplophyllum sahinii O. Tugay & D. Ulukuş and H. vulcanicum Boiss. & Heldr., were screened against acetylcholinesterase (AChE) and butyrylcholinesterase (BChE) associated with Alzheimer's disease as well as tyrosinase (TYR) linked to Parkinson's disease using ELISA microplate assay at 200 μg/mL. Among the extracts, the highest inhibition was caused by the stem extract of H. sahinii against BChE (IC50 =64.93±1.38 μg/mL). Consistently, all of the extracts were found to exert a selective inhibition towards BChE to some extent. It was only the root extract of H. vulcanicum that could inhibit AChE at low level (IC50 =203.18±5.33 μg/mL). None of the extracts displayed an inhibition over 50 % against TYR. Metabolite profiling of the extracts was achieved by a highly hyphenated liquid chromatographic mass spectrometric technique (HPLC-DAD-ESI-Q-TOF-MS/MS), which revealed the presence of furoquinoline (β-fagarine, γ-fagarine) and amide (tubasenicine, tubacetine) alkaloids; furano- (rutamarin), pyrano- (xanthyletine), and geranyloxy coumarins; phenylpropanoid (secoisolariciresinol), arylnaphthalene (mono-O-acetyldiphyllin apioside), and dibenzylbutyrolactone (kusunokinin, haplomyrfolin) lignans. Several important differences were observed between the extracts analyzed. β-Fagarine was the major alkaloid in H. vulcanicum, whereas γ-fagarine was present only in the roots of both Haplophyllum species; moreover, secoisolariciresinol and secoisolariciresinol dimethyl ether were the main lignans in the stems and flowers. This is the first study identifying ChE and TYR inhibitory effect and metabolic profiles of H. vulcanicum and H. sahinii.
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Affiliation(s)
- Esengul Karahisar
- Department of Biology, Faculty of Science, Selçuk University, Konya, 42250, Turkey
| | - Osman Tugay
- Department of Pharmaceutical Botany, Faculty of Pharmacy, Selçuk University, Konya, 42250, Turkey
| | - Ilkay Erdogan Orhan
- Department of Pharmacognosy, Faculty of Pharmacy, Gazi University, 06330, Ankara, Turkey
| | | | - Simon Vlad Luca
- Department of Pharmacognosy with Medicinal Plant Unit, Medical University of Lublin, 20-093, Lublin, Poland.,Department of Pharmacognosy, Faculty of Pharmacy, GrigoreT.PopaUniversity of Medicine and Pharmacy Iasi, 700115, Iasi, Romania
| | - Krystyna Skalicka-Wozniak
- Department of Pharmacognosy with Medicinal Plant Unit, Medical University of Lublin, 20-093, Lublin, Poland
| | - Mustafa Sahin
- Department of General Surgery, Faculty of Medicine, Selçuk University, Konya, 42250, Turkey
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In silico screening of anticholinesterase alkaloids for cyclooxygenase-2 (COX-2) and matrix metalloproteinase 8 (MMP-8) inhibitory potentials as multi-target inhibitors of Alzheimer’s disease. Med Chem Res 2019. [DOI: 10.1007/s00044-019-02407-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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20
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Hadda TB, Rauf A, Zgou H, Senol FS, Orhan IE, Mabkhot YN, Althagafi II, Farghaly TA, Alterary S. Drug Design of Inhibitors of Alzheimer's Disease (AD): POM and DFT Analyses of Cholinesterase Inhibitory Activity of β-amino di-Carbonyl Derivatives. Mini Rev Med Chem 2019; 19:688-705. [PMID: 30387392 DOI: 10.2174/1389557518666181102102816] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2017] [Revised: 01/20/2018] [Accepted: 03/17/2018] [Indexed: 01/15/2023]
Abstract
BACKGROUND Since deficit of acetylcholine has been evidenced in the Alzheimer's disease (AD) patients, cholinesterase inhibitors are currently the most specified drug category for the remediation of AD. METHOD In the present study, 16 compounds (1-16) with dicarbonyl skeletons have been synthesized and tested for their inhibitory potential in vitro against AChE and BChE using ELISA microtiter plate assays at 100 μg/mL. Since metal accumulation is related to AD, the compounds were also tested for their metal-chelation capacity. RESULTS AND CONCLUSION All the investigated dicarbonyl compounds exerted none or lower than 30% inhibition against both cholinesterases, whereas compounds 2, 8 and 11 showed 37, 42, 41% of inhibition towards BChE, being the most active. The highest metal-chelation capacity was observed with compound 8 (53.58 ± 2.06%). POM and DFT analyses are in good harmonization with experimental data.
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Affiliation(s)
- Taibi Ben Hadda
- LCM, Department of Chemestry, Faculty of Sciences, University Mohammed Premier, Oujda 60000, Morocco
| | - Abdur Rauf
- Department of Geology, University of Swabi, Anbar 23561, Khyber Pakhtunkhwa, Pakistan
| | - Hsaine Zgou
- Ibn Zohr University, Polydisciplinary Faculty, Ouarzazate 45000, Morocco
| | - Fatma Sezer Senol
- Department of Pharmacognosy, Pharmacy Faculty, Gazi University, Ankara 06330, Turkey
| | - Ilkay Erdogan Orhan
- Department of Pharmacognosy, Pharmacy Faculty, Gazi University, Ankara 06330, Turkey
| | - Yahia Nasser Mabkhot
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Khalid University, Abha, Saudi Arabia
| | | | - Thoraya A Farghaly
- Department of Chemistry, Faculty of Science, University of Cairo, Giza, Egypt
| | - Seham Alterary
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh-11451, Saudi Arabia
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21
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Keine D, Zelek M, Walker JQ, Sabbagh MN. Polypharmacy in an Elderly Population: Enhancing Medication Management Through the Use of Clinical Decision Support Software Platforms. Neurol Ther 2019; 8:79-94. [PMID: 30900186 PMCID: PMC6534631 DOI: 10.1007/s40120-019-0131-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Indexed: 12/18/2022] Open
Abstract
INTRODUCTION Polypharmacy is a growing problem in the United States. The use of multiple medications increases the likelihood that a patient will experience potential drug interactions and adverse drug reactions (ADRs). Those individuals with dementia or Alzheimer's disease (AD) are at greater risk, due to age, comorbidities, and an increased likelihood of being on a greater number of neuroactive medications. METHODS uMETHOD Health (uMH) has developed a precision medicine platform to address dementia and mild AD through the creation of personalized, multidomain treatment plans. Many interactions and ADRs may be observed, such as drug-drug interactions (DDIs), drug-gene interactions (DGIs), anticholinergic cognitive burden (ACB), and depression-inducing drugs (DIDs). uMH's algorithms can parse these interactions, rate them based on input from open-source databases, and then record all these interactions in a generated treatment plan. A total of 295 individuals aged 65 and older were included in this analysis. RESULTS Of 295 individuals, 97.59% were on at least one medication, with an overall mean of 11.5 medications per person; 83.66% were on five or more medications. A total of 102 DGIs, 3642 DDIs, and one high-priority DDI were found in this population. There was a significant increase in the number of DDIs as medications per person increased (P value < 0.0001). Of the population, 65.86% were on one or more anticholinergic drugs. There was a significant difference in the ACB score between individuals with cognitive decline and those without. In total, 60.98% of the overall population were on DIDs, with a mean of 1.19 medications per person. CONCLUSIONS The results of this work show that older populations have a high medication burden. With the growing elderly and AD populations, medication management for polypharmacy is a need that grows direr every year. uMH's platform was able to identify a multitude of polypharmacy problems that individuals are currently facing. FUNDING uMETHOD Health.
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Affiliation(s)
| | | | | | - Marwan N Sabbagh
- Cleveland Clinic Lou Ruvo Center for Brain Health, Las Vegas, NV, USA
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22
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Orhan IE, Senol Deniz FS, Traedal-Henden S, Cerón-Carrasco JP, den Haan H, Peña-García J, Pérez-Sánchez H, Emerce E, Skalicka-Wozniak K. Profiling Auspicious Butyrylcholinesterase Inhibitory Activity of Two Herbal Molecules: Hyperforin and Hyuganin C. Chem Biodivers 2019; 16:e1900017. [PMID: 30891904 DOI: 10.1002/cbdv.201900017] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Accepted: 03/19/2019] [Indexed: 12/15/2022]
Abstract
Cholinergic therapy based on cholinesterase (ChE) inhibitory drugs is the mainstay for the treatment of Alzheimer's disease. Therefore, an extensive research has been continuing for the discovery of drug candidates as inhibitors of acetyl- and butyrylcholinesterase. In this study, two natural molecules, e. g. hyperforin and hyuganin C were tested in vitro for their AChE and BChE inhibitory activity. Both of the compounds were ineffective against AChE, whereas hyperforin (IC50 =141.60±3.39 μm) and hyuganin C (IC50 =38.86±1.69 μm) were found to be the highly active inhibitors of BChE as compared to galantamine (IC50 =46.58±0.91 μm) which was used as the reference. Then, these molecules were further proceeded to molecular docking experiments in order to establish their interactions at the active site of BChE. The molecular docking results indicated that both of them are able to block the access to key residues in the catalytic triad of the enzyme, while they complement some of the hydrophobic residues of the cavity, what is consistent with our in vitro data. While both compounds were predicted as mutagenic, only hyuganin C showed hepatotoxicity in in silico analysis. According to whole outcomes that we obtained, particularly hyuganin C besides hyperforin are the promising BChE inhibitors, which can be the promising compounds for AD therapy.
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Affiliation(s)
- Ilkay Erdogan Orhan
- Department of Pharmacognosy, Faculty of Pharmacy, Gazi University, 06330, Ankara, Turkey
| | - F Sezer Senol Deniz
- Department of Pharmacognosy, Faculty of Pharmacy, Gazi University, 06330, Ankara, Turkey
| | | | - José P Cerón-Carrasco
- Bioinformatics and High Performance Computing Research Group, Universidad Católica San Antonio de Murcia (UCAM), 30107, Guadalupe, Spain
| | - Helena den Haan
- Bioinformatics and High Performance Computing Research Group, Universidad Católica San Antonio de Murcia (UCAM), 30107, Guadalupe, Spain
| | - Jorge Peña-García
- Bioinformatics and High Performance Computing Research Group, Universidad Católica San Antonio de Murcia (UCAM), 30107, Guadalupe, Spain
| | - Horacio Pérez-Sánchez
- Bioinformatics and High Performance Computing Research Group, Universidad Católica San Antonio de Murcia (UCAM), 30107, Guadalupe, Spain
| | - Esra Emerce
- Department of Pharmaceutical Toxicology, Faculty of Pharmacy, Gazi University, 06330, Ankara, Turkey
| | - Krystyna Skalicka-Wozniak
- Department of Pharmacognosy with Medicinal Plant Unit, Medical University of Lublin, 20-093, Lublin, Poland
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Trueblood AB, Ross JA, Shipp EM, McDonald TJ. Feasibility of Portable Fingerstick Cholinesterase Testing in Adolescents in South Texas. J Prim Care Community Health 2019; 10:2150132719838716. [PMID: 30929548 PMCID: PMC6444767 DOI: 10.1177/2150132719838716] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Adolescents are particularly vulnerable to the impacts of pesticide exposures,
which can be assessed using surveys, environmental measurements, and
biomonitoring. Biomonitoring of blood cholinesterase can be used to determine if
an individual has been exposed to pesticides. A limitation of blood
cholinesterase testing can be the use of a laboratory as well as time to receive
results. In addition to laboratory tests, there are fingerstick cholinesterase
(ChE) tests, which can eliminate the need for laboratory testing. Some
populations, such as farmworkers, would benefit through fingerstick ChE tests.
The objective of this pilot study is to determine the feasibility (eg, can the
testing be used to assess ChE levels) of using fingerstick ChE testing in
adolescent populations living along the Texas-Mexico border where adolescents
who often engage in farm work live. A sub-objective was to explore differences
in ChE levels by sex. The Model 400 Test-Mate ChE kit by EQM Research Inc
(Cincinnati, OH) was used to assess for ChE inhibition in the participants,
specifically acetylcholinesterase (AChE), which is 1 of the 2 ChE enzymes.
During the postassessment, males had a mean AChE value of 3.75 U/mL (95% CI
3.51-3.98); whereas females had a mean AChE value of 2.86 U/mL (95% CI
2.64-3.08), which was statistically significant. Overall, the study supports the
use of field ChE testing in adolescent populations with a small percentage
(6.90%) refusing to complete ChE testing.
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Affiliation(s)
| | | | - Eva M Shipp
- 1 Texas A&M Transportation Institute, College Station, TX, USA
| | - Thomas J McDonald
- 3 Texas A&M University School of Public Health, College Station, TX, USA
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24
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Volobuff CRF, Junior PCO, Dos Santos SM, Pereira ZV, Ferreira DC, Cardoso CAL, Ruiz ALTG, Foglio MA, de Carvalho JE, Formagio ASN. Antitumoral and Anticholinesterasic Activities of the Seven Species from Rubiaceae. Curr Pharm Biotechnol 2019; 20:302-308. [PMID: 30747062 DOI: 10.2174/1389201020666190211154550] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Revised: 01/30/2019] [Accepted: 02/05/2019] [Indexed: 11/22/2022]
Abstract
BACKGROUND The genus Psychotria and Palicourea are reported as a source of alkaloids and iridoids, which exhibit biological activities. This study aimed to evaluate antiproliferative and anticholinesterase activities and quantification of the alkaloids of seven species among the genus found in Mato Grosso do Sul region in Brazil. METHODS Concentrations of alkaloids were measured spectrophotometrically. The extracts were submitted to antiproliferative activity against ten cell lines. The anticholinesterase activity of the extracts was developed using brain structures of male Wistar rats: cerebral cortex, hippocampus, hypothalamus and striatum by the Ellman method. RESULTS Alkaloids from Psychotria and Palicourea species were quantified which showed values of 47.6 to 21.9 µg/g. Regarding the antiproliferative potential, Palicourea crocea demonstrated selectivity against the 786-0 cell line (GI50: 22.87 µg/mL). Psychotria leiocarpa inhibited cell growth against OVCAR-3 (GI50: 3.28 µg/mL), K-562 (GI50: 5.26 µg/mL), HaCaT (GI50: 27.20 µg/mL), PC-3 (GI50: 34.92 µg/mL), MCF-7 (GI50: 35.80 µg/mL) and P. capillacea showed activity against OVCAR-3 (GI50: 2.33 µg/ml) and U251 (GI50: 16.66 µg/ml). The effect of acetylcholinesterase inhibition was more effective in the hippocampus, demonstrating inhibition for Paliourea crocea, Psychotria deflexa, P. brachybotrya and P. leiocarpa of 70%, 57%, 50% and 40%, respectively, followed by P. poeppigiana and P. capillacea, inhibiting 21%, compared to the control. CONCLUSION Herein, the present work showed for the first time, anticholinesterasic and antiproliferative activities of extracts of Palicourea and Psychotria seem to be mainly associated with the levels of alkaloids in the leaves of these species.
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Affiliation(s)
- Carla R F Volobuff
- Faculty of Health Sciences, Federal University of Grande Dourados, Dourados-MS, Brazil
| | - Pedro C O Junior
- Faculty of Biological and Environmental Sciences, Federal University of Grande Dourados, Dourados-MS, Brazil
| | - Sidney M Dos Santos
- Faculty of Biological and Environmental Sciences, Federal University of Grande Dourados, Dourados-MS, Brazil
| | - Zefa V Pereira
- Faculty of Biological and Environmental Sciences, Federal University of Grande Dourados, Dourados-MS, Brazil
| | - Diego C Ferreira
- Department of Chemistry, State University of Mato Grosso do Sul, Dourados-MS, Brazil
| | - Claudia A L Cardoso
- Department of Chemistry, State University of Mato Grosso do Sul, Dourados-MS, Brazil
| | - Ana L T G Ruiz
- Faculty of Pharmaceutical Science, University of Campinas Unicamp, SP, Sao Paulo, Brazil
| | - Mary A Foglio
- Faculty of Pharmaceutical Science, University of Campinas Unicamp, SP, Sao Paulo, Brazil
| | - João E de Carvalho
- Faculty of Pharmaceutical Science, University of Campinas Unicamp, SP, Sao Paulo, Brazil
| | - Anelise S N Formagio
- Faculty of Health Sciences, Federal University of Grande Dourados, Dourados-MS, Brazil.,Faculty of Biological and Environmental Sciences, Federal University of Grande Dourados, Dourados-MS, Brazil
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25
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Demmak RG, Bordage S, Bensegueni A, Boutaghane N, Hennebelle T, Mokrani EH, Sahpaz S. Chemical Constituents from Solenostemma argel and their Cholinesterase Inhibitory Activity. ACTA ACUST UNITED AC 2019. [DOI: 10.20307/nps.2019.25.2.115] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Rym Gouta Demmak
- Laboratoire de Biochimie Appliquée, Département des Sciences de la Nature et de la Vie, Université Frères Mentouri-Constantine 1; 25000 Constantine, Algeria
- Laboratoire de Pharmacognosie, Univ. Lille, EA 7394 – ICV – Institut Charles Viollette; F-59000 Lille, France
| | - Simon Bordage
- Laboratoire de Pharmacognosie, Univ. Lille, EA 7394 – ICV – Institut Charles Viollette; F-59000 Lille, France
| | - Abederrahmane Bensegueni
- Laboratoire de Biochimie Appliquée, Département des Sciences de la Nature et de la Vie, Université Frères Mentouri-Constantine 1; 25000 Constantine, Algeria
| | - Naima Boutaghane
- Laboratoire d'Obtention des Substances Thérapeutiques (LOST), Campus Chaabet-Ersas, Département de chimie, Université des Frères Mentouri-Constantine; 25000 Constantine, Algeria
| | - Thierry Hennebelle
- Laboratoire de Pharmacognosie, Univ. Lille, EA 7394 – ICV – Institut Charles Viollette; F-59000 Lille, France
| | - El Hassen Mokrani
- Laboratoire de Biochimie Appliquée, Département des Sciences de la Nature et de la Vie, Université Frères Mentouri-Constantine 1; 25000 Constantine, Algeria
| | - Sevser Sahpaz
- Laboratoire de Pharmacognosie, Univ. Lille, EA 7394 – ICV – Institut Charles Viollette; F-59000 Lille, France
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26
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Dos Santos TC, Gomes TM, Pinto BAS, Camara AL, Paes AMDA. Naturally Occurring Acetylcholinesterase Inhibitors and Their Potential Use for Alzheimer's Disease Therapy. Front Pharmacol 2018; 9:1192. [PMID: 30405413 PMCID: PMC6201143 DOI: 10.3389/fphar.2018.01192] [Citation(s) in RCA: 138] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Accepted: 09/28/2018] [Indexed: 01/25/2023] Open
Abstract
Alzheimer's disease (AD) is a main cause of dementia, accounting for up to 75% of all dementia cases. Pathophysiological processes described for AD progression involve neurons and synapses degeneration, mainly characterized by cholinergic impairment. This feature makes acetylcholinesterase inhibitors (AChEi) the main class of drugs currently used for the treatment of AD dementia phase, among which galantamine is the only naturally occurring substance. However, several plant species producing diverse classes of alkaloids, coumarins, terpenes, and polyphenols have been assessed for their anti-AChE activity, becoming potential candidates for new anti-AD drugs. Therefore, this mini-review aimed to recapitulate last decade studies on the anti-AChE activity of plant species, their respective extracts, as well as isolated compounds. The anti-AChE activity of extracts prepared from 54 plant species pertaining 29 families, as well as 36 isolated compounds were classified and discussed according to their anti-AChE pharmacological potency to highlight the most prominent ones. Besides, relevant limitations, such as proper antioxidant assessment, and scarcity of toxicological and clinical studies were also discussed in order to help researchers out with the bioprospection of potentially new AChEi.
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Affiliation(s)
- Thaiane Coelho Dos Santos
- Laboratory of Experimental Physiology, Department of Physiological Sciences, Biological and Health Sciences Centre, Federal University of Maranhão, São Luís, Brazil.,Health Sciences Graduate Program, Biological and Health Sciences Centre, Federal University of Maranhão, São Luís, Brazil
| | - Thaís Mota Gomes
- Laboratory of Experimental Physiology, Department of Physiological Sciences, Biological and Health Sciences Centre, Federal University of Maranhão, São Luís, Brazil
| | - Bruno Araújo Serra Pinto
- Laboratory of Experimental Physiology, Department of Physiological Sciences, Biological and Health Sciences Centre, Federal University of Maranhão, São Luís, Brazil.,Health Sciences Graduate Program, Biological and Health Sciences Centre, Federal University of Maranhão, São Luís, Brazil
| | - Adriana Leandro Camara
- Laboratory of Experimental Physiology, Department of Physiological Sciences, Biological and Health Sciences Centre, Federal University of Maranhão, São Luís, Brazil
| | - Antonio Marcus de Andrade Paes
- Laboratory of Experimental Physiology, Department of Physiological Sciences, Biological and Health Sciences Centre, Federal University of Maranhão, São Luís, Brazil.,Health Sciences Graduate Program, Biological and Health Sciences Centre, Federal University of Maranhão, São Luís, Brazil
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27
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Choi JG, Kim SY, Jeong M, Oh MS. Pharmacotherapeutic potential of ginger and its compounds in age-related neurological disorders. Pharmacol Ther 2018; 182:56-69. [PMID: 28842272 DOI: 10.1016/j.pharmthera.2017.08.010] [Citation(s) in RCA: 71] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Age-related neurological disorders (ANDs), including neurodegenerative diseases, are multifactorial disorders with a risk that increases with aging. ANDs are generally characterized by common neuropathological conditions of the central nervous system, such as oxidative stress, neuroinflammation, and protein misfolding. Recently, efforts have been made to overcome ANDs because of the increase in age-dependent prevalence. Ginger, the rhizome of Zingiber officinale Roscoe, is a popular food spice and has a long history of use in traditional medicine for treating various disease symptoms. The structure-activity relationships of ginger phytochemicals show that ginger can be used to treat ANDs by targeting different ligand sites. This review shows that ginger and its constituents, such as 6-gingerol, 6-shogaol, 6-paradol, zingerone, and dehydrozingerone, are effective for ameliorating the neurological symptoms and pathological conditions of ANDs through by modulating cell death or cell survival signaling molecules. From this review, we conclude that the active ingredients in ginger have therapeutic potential in ANDs.
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Affiliation(s)
- Jin Gyu Choi
- Department of Life and Nanopharmaceutical Sciences, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Sun Yeou Kim
- College of Pharmacy and Gachon Institute of Pharmaceutical Science, Gachon University, Incheon 21936, Republic of Korea
| | - Minsun Jeong
- College of Pharmacy and Gachon Institute of Pharmaceutical Science, Gachon University, Incheon 21936, Republic of Korea
| | - Myung Sook Oh
- Department of Life and Nanopharmaceutical Sciences, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea; College of Pharmacy and Kyung Hee East-West Pharmaceutical Research Institute, Kyung Hee University, Seoul 02447, Republic of Korea.
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28
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Orhan IE, Senol FS, Shekfeh S, Skalicka-Wozniak K, Banoglu E. Pteryxin - A promising butyrylcholinesterase-inhibiting coumarin derivative from Mutellina purpurea. Food Chem Toxicol 2017; 109:970-974. [PMID: 28286309 DOI: 10.1016/j.fct.2017.03.016] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2017] [Revised: 03/05/2017] [Accepted: 03/06/2017] [Indexed: 11/24/2022]
Abstract
Pteryxin is a dihydropyranocoumarin derivative found in Apiaceae family. In this study, pteryxin, which was previously isolated from the fruits of Mutellina purpurea, was investigated for its inhibitory potential against acetylcholinesterase (AChE) and butyrylcholinesterase (BChE), which are the key enzymes in the pathology of Alzheimer's disease (AD). The compound was tested in vitro using ELISA microplate reader at 100 μg/ml and found to cause 9.30 ± 1.86% and 91.62 ± 1.53% inhibition against AChE and BChE, respectively. According to our results, pteryxin (IC50 = 12.96 ± 0.70 μg/ml) was found to be a more active inhibitor of BChE than galanthamine (IC50 = 22.16 ± 0.91 μg/ml; 81.93± 2.52% of inhibition at 100 μg/ml). Further study on pteryxin using molecular docking experiments revealed different possible binding modes with both polar and hydrophobic interactions inside the binding pocket of BChE. Top docking solution points out to the formation of two hydrogen bonds with the catalytic residues S198 and H438 of BChE as well as a strong π - π stacking with W231. Therefore, pteryxin as a natural coumarin seems to be a strong BChE inhibitor, which could be considered as a lead compound to develop novel BChE inhibitors for AD treatment.
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Affiliation(s)
- Ilkay Erdogan Orhan
- Department of Pharmacognosy, Faculty of Pharmacy, Gazi University, 06330 Ankara, Turkey.
| | - Fatma Sezer Senol
- Department of Pharmacognosy, Faculty of Pharmacy, Gazi University, 06330 Ankara, Turkey
| | - Suhaib Shekfeh
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Gazi University, 06330 Ankara, Turkey
| | - Krystyna Skalicka-Wozniak
- Department of Pharmacognosy with Medicinal Plant Unit, Faculty of Pharmacy, Medical University of Lublin, 20-093 Lublin, Poland
| | - Erden Banoglu
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Gazi University, 06330 Ankara, Turkey.
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29
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Qu Z, Zhang J, Yang H, Gao J, Chen H, Liu C, Gao W. Prunella vulgaris L., an Edible and Medicinal Plant, Attenuates Scopolamine-Induced Memory Impairment in Rats. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2017; 65:291-300. [PMID: 28001065 DOI: 10.1021/acs.jafc.6b04597] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Prunella vulgaris L. is as a major plant in the Chinese traditional functional beverage Guangdong herbal tea for the treatment of fevers, diarrhea, and sore mouth. In this study, ethyl acetate parts of aqueous extracts from P. vulgaris L. (EtOAc-APV) were found to demonstrate potent acetylcholinesterase (AChE) inhibition in vitro. Therefore, this study was designed to further investigate the effects of EtOAc-APV on scopolamine (SCOP)-induced aging rats. Male Wistar rats were randomly divided into four groups (n = 12) and given orally by gavage EtOAc-APV (100 mg/kg) for 3 weeks. SCOP (1 mg/kg, ip) was administered to rats 30 min before starting behavioral tests consecutively for 3 days. EtOAc-APV could attenuate SCOP-induced brain senescence in rats by improving behavioral performance and decreasing brain cell damage, which was associated with a notable reduction in AChE activity and MDA level, as well as an increase in SOD and GPx activities. Additionally, EtOAc-APV administration could reduce the expression of NF-κB and GFAP, which showed an anti-neuroinflammatory effect on the SCOP-treated rat. Overall, the current study highlights P. vulgaris L. as an antidementia dietary supplement.
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Affiliation(s)
- Zhuo Qu
- Tianjin Key Laboratory for Modern Drug Delivery and High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University , Tianjin 300072, China
| | - Jingze Zhang
- Department of Pharmacy, Tianjin Key Laboratory of Cardiovascular Remodeling and Target Organ Injury, Logistics University of Chinese People's Armed Police Forces , Tianjin 300162, China
| | - Honggai Yang
- Tianjin Key Laboratory for Modern Drug Delivery and High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University , Tianjin 300072, China
| | - Jing Gao
- Tianjin Key Laboratory for Modern Drug Delivery and High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University , Tianjin 300072, China
| | - Hong Chen
- Department of Pharmacy, Tianjin Key Laboratory of Cardiovascular Remodeling and Target Organ Injury, Logistics University of Chinese People's Armed Police Forces , Tianjin 300162, China
| | - Changxiao Liu
- The State Key Laboratories of Pharmacodynamics and Pharmacokinetics , Tianjin 300193, China
| | - Wenyuan Gao
- Tianjin Key Laboratory for Modern Drug Delivery and High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University , Tianjin 300072, China
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30
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Sorin EJ, Alvarado W, Cao S, Radcliffe A, La P, An Y. Ensemble Molecular Dynamics of a Protein-Ligand Complex: Residual Inhibitor Entropy Enhances Drug Potency in Butyrylcholinesterase. ACTA ACUST UNITED AC 2017; 6. [PMID: 28944107 DOI: 10.4172/2167-7662.1000145] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Butyrylcholinesterase is a key enzyme that catalyzes the hydrolysis of the neurotransmitter acetylcholine and shows an increased activity in patients suffering from Alzheimer's disease (AD), making this enzyme a primary target in treating AD. Central to this problem, and to similar scenarios involving biomolecular recognition, is our understanding of the nature of the protein-ligand complex. The butyrylcholinesterase enzyme was studied via all-atom, explicit solvent, ensemble molecular dynamics simulations sans inhibitor and in the presence of three dialkyl phenyl phosphate inhibitors of known potency to a cumulative sampling of over 40 μs. Following the relaxation of these ensembles to conformational equilibria, binding modes for each inhibitor were identified. While classical models, which assume significant reduction in protein and ligand conformational entropies, continue to be favored in contemporary studies, our observations contradict those assumptions: bound ligands occupy many conformational states, thereby stabilizing the complex, while also promoting protein flexibility.
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Affiliation(s)
- Eric J Sorin
- Department of Chemistry and Biochemistry, California State University Long Beach, California, USA
| | - Walter Alvarado
- Department of Physics and Astronomy, California State University Long Beach, California, USA
| | - Samantha Cao
- Department of Chemistry and Biochemistry, California State University Long Beach, California, USA
| | - Amethyst Radcliffe
- Department of Physics and Astronomy, California State University Long Beach, California, USA
| | - Phuc La
- Department of Chemistry and Biochemistry, California State University Long Beach, California, USA
| | - Yi An
- Department of Chemistry and Biochemistry, California State University Long Beach, California, USA
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31
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Senol FS, Ślusarczyk S, Matkowski A, Pérez-Garrido A, Girón-Rodríguez F, Cerón-Carrasco JP, den-Haan H, Peña-García J, Pérez-Sánchez H, Domaradzki K, Orhan IE. Selective in vitro and in silico butyrylcholinesterase inhibitory activity of diterpenes and rosmarinic acid isolated from Perovskia atriplicifolia Benth. and Salvia glutinosa L. PHYTOCHEMISTRY 2017; 133:33-44. [PMID: 27817931 DOI: 10.1016/j.phytochem.2016.10.012] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2016] [Revised: 10/25/2016] [Accepted: 10/27/2016] [Indexed: 06/06/2023]
Abstract
Cholinesterase inhibition is one of the most treatment strategies against Alzheimer's disease (AD) where metal accumulation is also strongly associated with pathology of the disease. In the current study, we assessed inhibitory effect against acetyl- (AChE) and butyrylcholinesterase (BChE) and metal-chelating capacity of twelve diterpenes: arucadiol, miltirone, tanshinone IIa, 1-oxomiltirone, cryptotanshinone, 1,2-didehydromiltirone, 1,2-didehydrotanshinone IIa, 1β-hydroxycryptotanshinone, 15,16-dihydrotanshinone, tanshinone I, isotanshinone II, 1(S)-hydroxytanshinone IIa, and rosmarinic acid, isolated from Perovskia atriplicifolia and Salvia glutinosa. The compounds were tested at 10 μg/mL using ELISA microtiter assays against AChE and BChE. QSAR and molecular docking studies have been also performed on the active compounds. All of the compounds showed higher [e.g., IC50 = 1.12 ± 0.07 μg/mL for 1,2-didehydromiltirone, IC50 = 1.15 ± 0.07 μg/mL for cryptotanshinone, IC50 = 1.20 ± 0.03 μg/mL for arucadiol, etc.)] or closer [1,2-didehydrotanshinone IIa (IC50 = 5.98 ± 0.49 μg/mL) and 1(S)-hydroxytanshinone IIa (IC50 = 5.71 ± 0.27 μg/mL)] inhibition against BChE as compared to that of galanthamine (IC50 = 12.56 ± 0.37 μg/mL), whereas only 15,16-dihydrotanshinone moderately inhibited AChE (65.17 ± 1.39%). 1,2-Didehydrotanshinone IIa (48.94 ± 0.26%) and 1(S)-hydroxytanshinone IIa (47.18 ± 5.10%) possessed the highest metal-chelation capacity. The present study affords an evidence for the fact that selective BChE inhibitors should be further investigated as promising candidate molecules for AD therapy.
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Affiliation(s)
- F Sezer Senol
- Department of Pharmacognosy, Faculty of Pharmacy, Gazi University, 06330 Ankara, Turkey
| | - Sylwester Ślusarczyk
- Department of Pharmaceutical Biology and Botany, Wroclaw Medical University, Wroclaw, Poland; Bioinformatics and High Performance Computing Research Group, Universidad Católica San Antonio de Murcia (UCAM), Spain
| | - Adam Matkowski
- Department of Pharmaceutical Biology and Botany, Wroclaw Medical University, Wroclaw, Poland
| | - Alfonso Pérez-Garrido
- Bioinformatics and High Performance Computing Research Group, Universidad Católica San Antonio de Murcia (UCAM), Spain
| | - Francisco Girón-Rodríguez
- Department of Food and Nutrition Technology, Universidad Católica San Antonio de Murcia (UCAM), Spain
| | - José P Cerón-Carrasco
- Bioinformatics and High Performance Computing Research Group, Universidad Católica San Antonio de Murcia (UCAM), Spain
| | - Helena den-Haan
- Bioinformatics and High Performance Computing Research Group, Universidad Católica San Antonio de Murcia (UCAM), Spain
| | - Jorge Peña-García
- Bioinformatics and High Performance Computing Research Group, Universidad Católica San Antonio de Murcia (UCAM), Spain
| | - Horacio Pérez-Sánchez
- Bioinformatics and High Performance Computing Research Group, Universidad Católica San Antonio de Murcia (UCAM), Spain.
| | - Krzysztof Domaradzki
- Department of Weed Science and Soil Tillage Systems, IUNG-Institute of Soil Science and Plant Cultivation, Wroclaw, Poland
| | - Ilkay Erdogan Orhan
- Department of Pharmacognosy, Faculty of Pharmacy, Gazi University, 06330 Ankara, Turkey.
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32
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Mohamed T, Rao PPN. 2,4-Disubstituted quinazolines as amyloid-β aggregation inhibitors with dual cholinesterase inhibition and antioxidant properties: Development and structure-activity relationship (SAR) studies. Eur J Med Chem 2016; 126:823-843. [PMID: 27951490 DOI: 10.1016/j.ejmech.2016.12.005] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2016] [Revised: 11/30/2016] [Accepted: 12/02/2016] [Indexed: 11/15/2022]
Abstract
A library of fifty-seven 2,4-disubstituted quinazoline derivatives were designed, synthesized and evaluated as a novel class of multi-targeting agents to treat Alzheimer's disease (AD). The biological assay results demonstrate the ability of several quinazoline derivatives to inhibit both acetyl and butyrylcholinesterase (AChE and BuChE) enzymes (IC50 range = 1.6-30.5 μM), prevent beta-amyloid (Aβ) aggregation (IC50 range 270 nM-16.7 μM) and exhibit antioxidant properties (34-63.4% inhibition at 50 μM). Compound 9 (N2-(1-benzylpiperidin-4-yl)-N4-(3,4-dimethoxybenzyl)quinazoline-2,4-diamine) was identified as a dual inhibitor of cholinesterases (AChE IC50 = 2.1 μM; BuChE IC50 = 8.3 μM) and exhibited good inhibition of Aβ aggregation (Aβ40 IC50 = 2.3 μM). Compound 15b (4-(benzylamino)quinazolin-2-ol) was the most potent Aβ aggregation inhibitor (Aβ40 IC50 = 270 nM) and was ∼4 and 1.4-fold more potent compared to the reference agents curcumin and resveratrol. These comprehensive structure activity-relationship (SAR) studies demonstrate the application of a 2,4-disubstituted quinazoline ring as a suitable template to develop multi-targeting agents to treat AD.
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Affiliation(s)
- Tarek Mohamed
- School of Pharmacy, Health Sciences Campus, University of Waterloo, 200 University Ave. West., Waterloo, Ontario, N2L 3G1, Canada; Department of Chemistry, University of Waterloo, 200 University Ave. West., Waterloo, Ontario, N2L 3G1, Canada
| | - Praveen P N Rao
- School of Pharmacy, Health Sciences Campus, University of Waterloo, 200 University Ave. West., Waterloo, Ontario, N2L 3G1, Canada.
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33
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Orhan IE, Gulyurdu F, Kupeli Akkol E, Senol FS, Arabaci Anul S, Tatli II. Anticholinesterase, antioxidant, analgesic and anti-inflammatory activity assessment of Xeranthemum annuum L. and isolation of two cyanogenic compounds. PHARMACEUTICAL BIOLOGY 2016; 54:2643-2651. [PMID: 27465673 DOI: 10.1080/13880209.2016.1177092] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
CONTEXT Xeranthemum annuum L. (Asteraceae) (XA) is an ornamental and medicinal species with limited bioactivity and phytochemical data. OBJECTIVE Identification of anticholinesterase, antioxidant, anti-inflammatory and analgesic effects of the flower and root-stem (R-S) extracts of XA. MATERIALS AND METHODS Anticholinesterase (at 100 μg mL-1) and antioxidant (at 1000 μg mL-1) effects of various extracts were evaluated via microtiter assays, while anti-inflammatory and analgesic effects of the R-S extracts were tested using carrageenan-induced hind paw oedema (100 and 200 mg kg-1) and p-benzoquinone (PBQ) writhing models (200 mg kg-1) in male Swiss albino mice. The R-S ethanol extract of XA was subjected to isolation studies using conventional chromatographic methods. RESULTS Most of the extracts showed inhibition over 85% against butyrylcholinesterase and no inhibition towards acetylcholinesterase. The flower chloroform and the R-S ethyl acetate extracts were most effective (97.85 ± 0.94% and 96.89 ± 1.09%, respectively). The R-S ethanol extract displayed a remarkable scavenging activity against DPPH (77.33 ± 1.99%) and in FRAP assay, while the hexane extract of the R-S parts possessed the highest metal-chelating capacity (72.79 ± 0.33%). The chloroform extract of the R-S caused a significant analgesic effect (24.4%) in PBQ writhing model. No anti-inflammatory effect was observed. Isolation of zierin and zierin xyloside, which were inactive in anticholinesterase assays, was achieved from the R-S ethanol extract. DISCUSSION AND CONCLUSION This is the first report of anticholinesterase, antioxidant, analgesic and anti-inflammatory activities and isolation of zierin and zierin xyloside from XA. Therefore, XA seems to contain antioxidant and BChE-inhibiting compounds.
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Affiliation(s)
- Ilkay Erdogan Orhan
- a Department of Pharmacognosy, Faculty of Pharmacy , Gazi University , Ankara , Turkey
| | - Fulya Gulyurdu
- a Department of Pharmacognosy, Faculty of Pharmacy , Gazi University , Ankara , Turkey
| | - Esra Kupeli Akkol
- a Department of Pharmacognosy, Faculty of Pharmacy , Gazi University , Ankara , Turkey
| | - Fatma Sezer Senol
- a Department of Pharmacognosy, Faculty of Pharmacy , Gazi University , Ankara , Turkey
| | - Serap Arabaci Anul
- b Department of Pharmaceutical Botany, Faculty of Pharmacy , Hacettepe University , Ankara , Turkey
| | - Iffet Irem Tatli
- b Department of Pharmaceutical Botany, Faculty of Pharmacy , Hacettepe University , Ankara , Turkey
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Hetero-annulated coumarins as new AChE/BuChE inhibitors: synthesis and biological evaluation. Med Chem Res 2016. [DOI: 10.1007/s00044-016-1626-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Zengin G, Degirmenci NS, Alpsoy L, Aktumsek A. Evaluation of antioxidant, enzyme inhibition, and cytotoxic activity of three anthraquinones (alizarin, purpurin, and quinizarin). Hum Exp Toxicol 2016; 35:544-53. [PMID: 26178874 DOI: 10.1177/0960327115595687] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
OBJECTIVE The aim of this work was to investigate the cytotoxic, antioxidative, and enzyme inhibition effects of alizarin, quinizarin, and purpurin, which are anthraquinones (AQ). METHODS Cytotoxic effects were evaluated with cell inhibition rate by 3-(4,5-dimethylthiazol- 2-yl)-2,5-diphenyltetrazolium bromide assay. Different chemical assays, including free radical scavenging activity (1,1-diphenyl-2-picrylhydrazyl and 2,2-azino-bis(3-ethylbenzothiazloine-6-sulfonic acid)), phosphomolybdenum and reducing power (ferric reducing antioxidant power and cupric ion reducing activity), were used to evaluate the antioxidant properties. Moreover, enzyme inhibitory activities were analyzed against acetylcholinesterase, butrylcholinesterase, tyrosinase, α-amylase, and α-glucosidase. RESULTS These components have antioxidant and enzyme inhibition activity. Especially, purpurin showed the strongest antioxidant and good enzyme inhibitory effects. According to our cytotoxicity results, alizarin, purpurin, and quinizarin induced dose- and time-dependent cell proliferation. Furthermore, when we applied AQs with mitomycin C (MC) on L929 cell line, we demonstrated that cell proliferation in MC-AQ groups compared with MC group was increased. The most effective component was alizarin at 100 µM concentration. These AQs showed positive effects on L929 cell lines with high half-maximal inhibitory concentration values. CONCLUSION Our results demonstrate that AQs may be used as antioxidative compounds in food and medicinal applications.
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Affiliation(s)
- G Zengin
- Department of Biology, Faculty of Science, Selcuk University, Konya, Turkey
| | - N S Degirmenci
- Department of Biology, Faculty of Science and Art, Fatih University, Istanbul, Turkey
| | - L Alpsoy
- Department of Medical Biology, Faculty of Medicine, Fatih University, Istanbul, Turkey
| | - A Aktumsek
- Department of Biology, Faculty of Science, Selcuk University, Konya, Turkey
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Alarcón J, Cespedes CL, Muñoz E, Balbontin C, Valdes F, Gutierrez M, Astudillo L, Seigler DS. Dihydroagarofuranoid Sesquiterpenes as Acetylcholinesterase Inhibitors from Celastraceae Plants: Maytenus disticha and Euonymus japonicus. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2015; 63:10250-10256. [PMID: 26545100 DOI: 10.1021/acs.jafc.5b04168] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Natural cholinesterase inhibitors have been found in many biological sources. Nine compounds with agarofuran (epoxyeudesmane) skeletons were isolated from seeds and aerial parts of Maytenus disticha and Euonymus japonicus. The identification and structural elucidation of compounds were based on spectroscopic data analyses. All compounds had inhibitory acetylcholinesterase (AChE) activity. These natural compounds, which possessed mixed or uncompetitive mechanisms of inhibitory activity against AChE, may be considered as models for the design and development of new naturally occurring drugs for management strategies for neurodegenerative diseases. This is the first report of these chemical structures for seeds of M. disticha.
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Affiliation(s)
- Julio Alarcón
- Laboratorio de Sı́ntesis y Biotransformación de Productos Naturales, Facultad de Ciencias, Universidad del Bı́o-Bı́o , Avenida Andrés Bello s/n, Casilla 447, CP 3780000, Chillán, Chile
| | - Carlos L Cespedes
- Laboratorio de Sı́ntesis y Biotransformación de Productos Naturales, Facultad de Ciencias, Universidad del Bı́o-Bı́o , Avenida Andrés Bello s/n, Casilla 447, CP 3780000, Chillán, Chile
| | - Evelyn Muñoz
- Laboratorio de Sı́ntesis y Biotransformación de Productos Naturales, Facultad de Ciencias, Universidad del Bı́o-Bı́o , Avenida Andrés Bello s/n, Casilla 447, CP 3780000, Chillán, Chile
| | - Cristian Balbontin
- Laboratorio de Sı́ntesis y Biotransformación de Productos Naturales, Facultad de Ciencias, Universidad del Bı́o-Bı́o , Avenida Andrés Bello s/n, Casilla 447, CP 3780000, Chillán, Chile
| | | | | | - Luis Astudillo
- Instituto de Quı́mica, Universidad de Talca , Talca, Chile
| | - David S Seigler
- Department of Plant Biology, Herbarium, University of Illinois at Urbana-Champaign , Urbana, Illinois 61801, United States
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Abstract
Alzheimer's disease (AD) is a neurodegenerative illness associated with dementia and is most prevalent among the elderly population. Current medications can only treat symptoms. Alkaloids are structurally diverse and have been an important source of therapeutics for various brain disorders. Two US Food and Drug Administration (FDA)-approved acetylcholinesterase inhibitors for AD, galantamine and rivastigmine, are in fact alkaloids. In addition, clinical trials of four other extensively studied alkaloids-huperzine A, caffeine, nicotine, and indomethacin-have been conducted but do not convincingly demonstrate their clinical efficacy for AD. Interestingly, rhynchophylline, a known neuroprotective alkaloid, was recently discovered by in silico screening as an inhibitor of EphA4, a novel target for AD. Here, we review the pathophysiological mechanisms underlying AD, current treatment strategies, and therapeutic potential of several selected plant alkaloids in AD, highlighting their various drug targets and the key supportive preclinical and clinical studies. Future research should include more rigorous clinical studies of the most promising alkaloids, the further development of recently discovered candidate alkaloids, and the continual search for new alkaloids for relevant drug targets. It remains promising that an alkaloid drug candidate could significantly affect the progression of AD in addition to providing symptomatic relief.
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Affiliation(s)
- Yu Pong Ng
- Division of Life Science, Molecular Neuroscience Center, State Key Laboratory of Molecular Neuroscience, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China
| | - Terry Cho Tsun Or
- Division of Life Science, Molecular Neuroscience Center, State Key Laboratory of Molecular Neuroscience, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China
| | - Nancy Y Ip
- Division of Life Science, Molecular Neuroscience Center, State Key Laboratory of Molecular Neuroscience, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China.
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Erdogan Orhan I, Senol FS, Aslan Erdem S, Tatli II, Kartal M, Alp S. Tyrosinase and Cholinesterase Inhibitory Potential and Flavonoid Characterization of Viola odorata
L. (Sweet Violet). Phytother Res 2015; 29:1304-1310. [DOI: 10.1002/ptr.5378] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2015] [Revised: 04/26/2015] [Accepted: 04/28/2015] [Indexed: 11/06/2022]
Affiliation(s)
- Ilkay Erdogan Orhan
- Department of Pharmacognosy, Faculty of Pharmacy; Gazi University; 06330 Ankara Turkey
| | - Fatma Sezer Senol
- Department of Pharmacognosy, Faculty of Pharmacy; Gazi University; 06330 Ankara Turkey
| | - Sinem Aslan Erdem
- Department of Pharmacognosy, Faculty of Pharmacy; Ankara University; 06100 Ankara Turkey
| | - I. Irem Tatli
- Department of Pharmaceutical Botany, Faculty of Pharmacy; Hacettepe University; 06100 Ankara Turkey
| | - Murat Kartal
- Department of Pharmacognosy, Faculty of Pharmacy; Ankara University; 06100 Ankara Turkey
- Department of Pharmacognosy, Faculty of Pharmacy, and Center of Phytotherapy Education, Research and Practice; Bezmialem Vakif University; 34093 Istanbul Turkey
| | - Sevket Alp
- Department of Landscape Architecture, Faculty of Agriculture; Yuzuncu Yıl University; 65080 Van Turkey
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Vandeput M, Parsajoo C, Vanheuverzwijn J, Patris S, Yardim Y, le Jeune A, Sarakbi A, Mertens D, Kauffmann JM. Flow-through enzyme immobilized amperometric detector for the rapid screening of acetylcholinesterase inhibitors by flow injection analysis. J Pharm Biomed Anal 2015; 102:267-75. [DOI: 10.1016/j.jpba.2014.09.012] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2014] [Accepted: 09/09/2014] [Indexed: 12/14/2022]
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Abstract
AbstractThe effects of growth retardants (paclobutrazol and ancymidol), sucrose, GA3 (gibberellic acid) and physical state of the medium (solid and liquid — Rita® temporary immersion system) on in vitro induction of Leucojum aestivum bulbs and their acclimatization were studied. Paclobutrazol, regardless of the physical state of the medium, stimulated the formation of bulbs (99.3%). Under the influence 90 g L−1 of sucrose or paclobutrazol the bulbs with the highest fresh weight (FW) were formed (250 mg and 208.8 mg, respectively). However, the addition of ancymidol to the liquid medium led to obtaining the bulbs showing the highest number of leaves and roots (63.2% and 91.7%, respectively). The scanning microscopy study proved that plants obtained in the medium containing GA3 produced the stomata which most closely resembled to the one observed in the mother plant. Cytometric analysis of all regenerants revealed absence of changes in the nuclear DNA content. The maximum survival rate (100%) was observed for plants derived from liquid medium containing 90 g L−1 of sucrose. Somewhat fewer plants were acclimatized after their cultivations in liquid medium enriched with paclobutrazol or ancymidol. The temporary immersion system led to perform successful ex vitro adaptation of Leucojum aestivum plants.
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Qian ZM, Ke Y. Huperzine A: Is it an Effective Disease-Modifying Drug for Alzheimer's Disease? Front Aging Neurosci 2014; 6:216. [PMID: 25191267 PMCID: PMC4137276 DOI: 10.3389/fnagi.2014.00216] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2014] [Accepted: 08/04/2014] [Indexed: 01/15/2023] Open
Abstract
Alzheimer’s disease (AD) is a progressive neurodegenerative disorder for which there is no cure. Huperzine A (HupA) is a natural inhibitor of acetylcholinesterase (AChE) derived from the Chinese folk medicine Huperzia serrata (Qian Ceng Ta). It is a licensed anti-AD drug in China and is available as a nutraceutical in the US. A growing body of evidence has demonstrated that HupA has multifaceted pharmacological effects. In addition to the symptomatic, cognitive-enhancing effect via inhibition of AChE, a number of recent studies have reported that this drug has “non-cholinergic” effects on AD. Most important among these is the protective effect of HupA on neurons against amyloid beta-induced oxidative injury and mitochondrial dysfunction as well as via the up-regulation of nerve growth factor and antagonizing N-methyl-d-aspartate receptors. The most recent discovery that HupA may reduce brain iron accumulation lends further support to the argument that HupA could serve as a potential disease-modifying agent for AD and also other neurodegenerative disorders by significantly slowing down the course of neuronal death.
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Affiliation(s)
- Zhong Ming Qian
- Laboratory of Neuropharmacology, Fudan University School of Pharmacy , Shanghai , China
| | - Ya Ke
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, NT , Hong Kong , China
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Natural Compounds (Small Molecules) as Potential and Real Drugs of Alzheimer's Disease. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/b978-0-444-63281-4.00006-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2023]
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Huang XT, Qian ZM, He X, Gong Q, Wu KC, Jiang LR, Lu LN, Zhu ZJ, Zhang HY, Yung WH, Ke Y. Reducing iron in the brain: a novel pharmacologic mechanism of huperzine A in the treatment of Alzheimer's disease. Neurobiol Aging 2013; 35:1045-54. [PMID: 24332448 DOI: 10.1016/j.neurobiolaging.2013.11.004] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2013] [Revised: 10/14/2013] [Accepted: 11/05/2013] [Indexed: 02/02/2023]
Abstract
Huperzine A (HupA), a natural inhibitor of acetylcholinesterase derived from a plant, is a licensed anti-Alzheimer's disease (AD) drug in China and a nutraceutical in the United States. In addition to acting as an acetylcholinesterase inhibitor, HupA possesses neuroprotective properties. However, the relevant mechanism is unknown. Here, we showed that the neuroprotective effect of HupA was derived from a novel action on brain iron regulation. HupA treatment reduced insoluble and soluble beta amyloid levels, ameliorated amyloid plaques formation, and hyperphosphorylated tau in the cortex and hippocampus of APPswe/PS1dE9 transgenic AD mice. Also, HupA decreased beta amyloid oligomers and amyloid precursor protein levels, and increased A Disintegrin And Metalloprotease Domain 10 (ADAM10) expression in these treated AD mice. However, these beneficial effects of HupA were largely abolished by feeding the animals with a high iron diet. In parallel, we found that HupA decreased iron content in the brain and demonstrated that HupA also has a role to reduce the expression of transferrin-receptor 1 as well as the transferrin-bound iron uptake in cultured neurons. The findings implied that reducing iron in the brain is a novel mechanism of HupA in the treatment of Alzheimer's disease.
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Affiliation(s)
- Xiao-Tian Huang
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, China; State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
| | - Zhong-Ming Qian
- Laboratory of Neuropharmacology, School of Pharmacy, Fudan University, Shanghai, China.
| | - Xuan He
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, China
| | - Qi Gong
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, China
| | - Ka-Chun Wu
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, China
| | - Li-Rong Jiang
- Laboratory of Neuropharmacology, School of Pharmacy, Fudan University, Shanghai, China
| | - Li-Na Lu
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, China
| | - Zhou-Jing Zhu
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, China
| | - Hai-Yan Zhang
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
| | - Wing-Ho Yung
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, China
| | - Ya Ke
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, China.
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Lu J, E L, Roy N, Hutfles L, Selfridge E, Funk E, Burns JM, Swerdlow RH. Effect of cholinergic signaling on neuronal cell bioenergetics. J Alzheimers Dis 2013; 33:1135-46. [PMID: 23099815 DOI: 10.3233/jad-2012-121822] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Alzheimer's disease (AD) patients have reduced brain acetylcholine and reversing this deficit yields clinical benefits. In this study we explored how increased cholinergic tone impacts cell bioenergetics, which are also perturbed in AD. We treated SH-SY5Y neuroblastoma cells with carbachol, a cholinergic agonist, and tested for bioenergetic flux and bioenergetic infrastructure changes. Carbachol rapidly increased both oxidative phosphorylation and glycolysis fluxes. ATP levels rose slightly, as did cell energy demand, and AMPK phosphorylation occurred. At least some of these effects depended on muscarinic receptor activation, ER calcium release, and ER calcium re-uptake. Our data show that increasing cholinergic signaling enhances cell bioenergetics, and reveal mechanisms that mediate this effect. Phenomena we observed could potentially explain why cholinesterase inhibitor therapy increases AD brain glucose utilization and N-acetyl aspartate levels. The question of whether cholinesterase inhibitors have a disease modifying effect in AD has long been debated; our data suggest a theoretical mechanism through which such an effect could potentially arise.
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Affiliation(s)
- Jianghua Lu
- University of Kansas Alzheimer's Disease Center, University of Kansas School of Medicine, Kansas City, KS 66160, USA
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Orhan IE. Nature: a substantial source of auspicious substances with acetylcholinesterase inhibitory action. Curr Neuropharmacol 2013; 11:379-87. [PMID: 24381529 PMCID: PMC3744902 DOI: 10.2174/1570159x11311040003] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2012] [Revised: 02/05/2013] [Accepted: 02/05/2013] [Indexed: 12/26/2022] Open
Abstract
Acetylcholinesterase (AChE) (EC 3.1.1.7) is an important enzyme that breaks down of acetylcholine in synaptic cleft in neuronal junctions. Inhibition of AChE is associated with treatment of several diseases such as Alzheimer's disease (AD), myasthenia gravis, and glaucoma as well as the mechanisms of insecticide and anthelmintic drugs. Several AChE inhibitors are available in clinical use currently for the treatment of AD; however, none of them has ability, yet, to seize progress of the disease. Consequently, an extensive research has been going on finding new AChE inhibitors. In this sense, natural inhibitors have gained great attention due to their encouraging effects toward AChE. In this review, promising candidate molecules with marked AChE inhibition from both plant and animal sources will be underlined.
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Affiliation(s)
- Ilkay Erdogan Orhan
- Department of Pharmacognosy, Faculty of Pharmacy, Gazi University, 06330 Ankara, Turkey
- Department of Pharmacognosy and Pharmaceutical Botany, Faculty of Pharmacy, Eastern Mediterranean University, Gazimagosa, The Northern Cyprus via Turkey
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Konrath EL, Passos CDS, Klein-Júnior LC, Henriques AT. Alkaloids as a source of potential anticholinesterase inhibitors for the treatment of Alzheimer's disease. J Pharm Pharmacol 2013; 65:1701-25. [DOI: 10.1111/jphp.12090] [Citation(s) in RCA: 120] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2013] [Accepted: 05/12/2013] [Indexed: 01/06/2023]
Abstract
Abstract
Objectives
The inhibition of acetylcholinesterase (AChE), the key enzyme in the breakdown of acetylcholine, is currently the main pharmacological strategy available for Alzheimer's disease (AD). In this sense, many alkaloids isolated from natural sources, such as physostigmine, have been long recognized as acetyl- and butyrylcholinesterase (BChE) inhibitors. Since the approval of galantamine for the treatment of AD patients, the search for new anticholinesterase alkaloids has escalated, leading to promising candidates such as huperzine A. This review aims to summarize recent advances in current knowledge on alkaloids as AChE and BChE inhibitors, highlighting structure–activity relationship (SAR) and docking studies.
Key findings
Natural alkaloids belonging to the steroidal/triterpenoidal, quinolizidine, isoquinoline and indole classes, mainly distributed within Buxaceae, Amaryllidaceae and Lycopodiaceae, are considered important sources of alkaloids with anti-enzymatic properties. Investigations into the possible SARs for some active compounds are based on molecular modelling studies, predicting the mode of interaction of the molecules with amino acid residues in the active site of the enzymes. Following this view, an increasing interest in achieving more potent and effective analogues makes alkaloids good chemical templates for the development of new cholinesterase inhibitors.
Summary
The anticholinesterase activity of alkaloids, together with their structural diversity and physicochemical properties, makes them good candidate agents for the treatment of AD.
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Affiliation(s)
- Eduardo Luis Konrath
- Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Carolina dos Santos Passos
- Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Luiz Carlos Klein-Júnior
- Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Amélia T Henriques
- Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
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Pinho BR, Ferreres F, Valentão P, Andrade PB. Nature as a source of metabolites with cholinesterase-inhibitory activity: an approach to Alzheimer's disease treatment. J Pharm Pharmacol 2013; 65:1681-700. [DOI: 10.1111/jphp.12081] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2013] [Accepted: 04/11/2013] [Indexed: 12/14/2022]
Abstract
Abstract
Objectives
Alzheimer's disease (AD) is the most common cause of dementia, being responsible for high healthcare costs and familial hardships. Despite the efforts of researchers, no treatment able to delay or stop AD progress exists. Currently, the available treatments are only symptomatic, cholinesterase inhibitors being the most widely used drugs. Here we describe several natural compounds with anticholinesterase (acetylcholinesterase and butyrylcholinesterase) activity and also some synthetic compounds whose structures are based on those of natural compounds.
Key findings
Galantamine and rivastigmine are two cholinesterase inhibitors used in therapeutics: galantamine is a natural alkaloid that was extracted for the first time from Galanthus nivalis L., while rivastigmine is a synthetic alkaloid, the structure of which is modelled on that of natural physostigmine. Alkaloids include a high number of compounds with anticholinesterases activity at the submicromolar range. Quinones and stilbenes are less well studied regarding cholinesterase inhibition, although some of them, such as sargaquinoic acid or (+)-α-viniferin, show promising activity. Among flavonoids, flavones and isoflavones are the most potent compounds. Xanthones and monoterpenes are generally weak cholinesterase inhibitors.
Summary
Nature is an almost endless source of bioactive compounds. Several natural compounds have anticholinesterase activity and others can be used as leader compounds for the synthesis of new drugs.
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Affiliation(s)
- Brígida R Pinho
- REQUIMTE/Laboratório de Farmacognosia, Departamento de Química, Faculdade de Farmácia, Universidade do Porto, Porto, Portugal
| | - Federico Ferreres
- Research Group on Quality, Safety and Bioactivity of Plant Foods, Department of Food Science and Technology, CEBAS (CSIC), Murcia, Spain
| | - Patrícia Valentão
- REQUIMTE/Laboratório de Farmacognosia, Departamento de Química, Faculdade de Farmácia, Universidade do Porto, Porto, Portugal
| | - Paula B Andrade
- REQUIMTE/Laboratório de Farmacognosia, Departamento de Química, Faculdade de Farmácia, Universidade do Porto, Porto, Portugal
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Catto M, Pisani L, Leonetti F, Nicolotti O, Pesce P, Stefanachi A, Cellamare S, Carotti A. Design, synthesis and biological evaluation of coumarin alkylamines as potent and selective dual binding site inhibitors of acetylcholinesterase. Bioorg Med Chem 2012. [PMID: 23199476 DOI: 10.1016/j.bmc.2012.10.045] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Acetylcholinesterase inhibitors (AChEIs) are currently the drugs of choice, although only symptomatic and palliative, for the treatment of Alzheimer's disease (AD). Donepezil is one of most used AChEIs in AD therapy, acting as a dual binding site, reversible inhibitor of AChE with high selectivity over butyrylcholinesterase (BChE). Through a combined target- and ligand-based approach, a series of coumarin alkylamines matching the structural determinants of donepezil were designed and prepared. 6,7-Dimethoxycoumarin derivatives carrying a protonatable benzylamino group, linked to position 3 by suitable linkers, exhibited fairly good AChE inhibitory activity and a high selectivity over BChE. The inhibitory potency was strongly influenced by the length and shape of the spacer and by the methoxy substituents on the coumarin scaffold. The inhibition mechanism, assessed for the most active compound 13 (IC(50) 7.6 nM) resulted in a mixed-type, thus confirming its binding at both the catalytic and peripheral binding sites of AChE.
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Affiliation(s)
- Marco Catto
- Dipartimento di Farmacia, Università degli Studi di Bari Aldo Moro, via E. Orabona 4, Bari 70125, Italy.
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Torres JM, Lira AF, Silva DR, Guzzo LM, Sant'Anna CMR, Kümmerle AE, Rumjanek VM. Structural insights into cholinesterases inhibition by harmane β-carbolinium derivatives: a kinetics-molecular modeling approach. PHYTOCHEMISTRY 2012; 81:24-30. [PMID: 22717507 DOI: 10.1016/j.phytochem.2012.05.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2011] [Revised: 02/23/2012] [Accepted: 05/01/2012] [Indexed: 05/27/2023]
Abstract
The natural indole alkaloids, the β-carbolines, are often associated with cholinesterase inhibition, especially their quaternary salts, which frequently have higher activity than the free bases. Due to lack of information explaining this fact in the literature, the cholinesterase inhibition by the natural product harmane and its two β-carbolinium synthetic derivative salts (N-methyl and N-ethyl) was explored, together with a combination of kinetics and a molecular modeling approach. The results, mainly for the β-carbolinium salts, demonstrated a noncompetitive inhibition profile, ruling out previous findings which associated cholinesterase inhibition by β-carbolinium salts to a possible mimicking of the choline moiety of the natural substrate, acetylcholine. Molecular modeling studies corroborate this kind of inhibition through analyses of inhibitor/enzyme and inhibitor/substrate/enzyme complexes of both enzymes.
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Affiliation(s)
- Juliana M Torres
- Departamento de Química, Instituto de Ciências Exatas, Universidade Federal Rural do Rio de Janeiro, Seropédica, RJ, Brazil
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Georgiev V, Ivanov I, Berkov S, Ilieva M, Georgiev M, Gocheva T, Pavlov A. Galanthamine production byLeucojum aestivumL. shoot culture in a modified bubble column bioreactor with internal sections. Eng Life Sci 2012. [DOI: 10.1002/elsc.201100177] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Affiliation(s)
- Vasil Georgiev
- Laboratory of Applied Biotechnologies; The Stephan Angeloff Institute of Microbiology; Bulgarian Academy of Sciences; Plovdiv; Bulgaria
| | - Ivan Ivanov
- Laboratory of Applied Biotechnologies; The Stephan Angeloff Institute of Microbiology; Bulgarian Academy of Sciences; Plovdiv; Bulgaria
| | - Strahil Berkov
- Department of Photochemistry, AgroBioInstitute; Sofia; Bulgaria
| | - Mladenka Ilieva
- Laboratory of Applied Biotechnologies; The Stephan Angeloff Institute of Microbiology; Bulgarian Academy of Sciences; Plovdiv; Bulgaria
| | - Milen Georgiev
- Laboratory of Applied Biotechnologies; The Stephan Angeloff Institute of Microbiology; Bulgarian Academy of Sciences; Plovdiv; Bulgaria
| | - Tatiana Gocheva
- Laboratory of Applied Biotechnologies; The Stephan Angeloff Institute of Microbiology; Bulgarian Academy of Sciences; Plovdiv; Bulgaria
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