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Jiang S, Gao BB, Ou YF, Zhao QS. Lycopodium alkaloids from Huperzia serrata and their cholinesterase inhibitory activities. PHYTOCHEMISTRY 2024; 223:114114. [PMID: 38697240 DOI: 10.1016/j.phytochem.2024.114114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2024] [Revised: 04/15/2024] [Accepted: 04/28/2024] [Indexed: 05/04/2024]
Abstract
Huperzia serrata, belonging to the Lycopodiaceae family, has been traditionally utilized for the management of treating rheumatic numbness, arthritic pain, dysmenorrhea, and contusions. This plant is a rich source of lycopodium alkaloids, some of which have demonstrated notable cholinesterase inhibitory activity. The objective of this study was to identify lycopodium alkaloids with cholinesterase inhibitory properties from H. serrata. The structures of these alkaloids were elucidated by HRESIMS, NMR (including a 1H-15N HMBC experiment), ECD methods and single-crystal X-ray diffraction. The inhibitory activities against acetylcholinesterase (AChE) and butyrylcholinesterase (BuChE) were assessed using a modified Ellman's method. Consequently, sixteen lycopodium alkaloids (1-16), including ten previously undescribed ones named huperradines A-G and huperradines I-K (1-7 and 9-11), along with one previously undescribed naturally occurring compound, huperradine H (8), were isolated from H. serrata. Among these, compounds 7 and 1 exhibited potent and moderate AChE inhibition, with IC50 values of 0.876 ± 0.039 μM and 13.125 ± 0.521 μM, respectively. Our results suggest that huperradine G (7) may be a promising lead compound for the development of new AChE inhibitors for Alzheimer's disease.
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Affiliation(s)
- Shuai Jiang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China; University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Bei-Bei Gao
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China; University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Yu-Fei Ou
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China; University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Qin-Shi Zhao
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China; University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China.
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2
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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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Koppula S, Wankhede NL, Sammeta SS, Shende PV, Pawar RS, Chimthanawala N, Umare MD, Taksande BG, Upaganlawar AB, Umekar MJ, Kopalli SR, Kale MB. Modulation of Cholesterol metabolism with Phytoremedies in Alzheimer's disease: A comprehensive Review. Ageing Res Rev 2024:102389. [PMID: 38906182 DOI: 10.1016/j.arr.2024.102389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2024] [Revised: 06/18/2024] [Accepted: 06/18/2024] [Indexed: 06/23/2024]
Abstract
Alzheimer's disease (AD) is a complex neurological ailment that causes cognitive decline and memory loss. Cholesterol metabolism dysregulation has emerged as a crucial element in AD pathogenesis, contributing to the formation of amyloid-beta (Aβ) plaques and tau tangles, the disease's hallmark neuropathological characteristics. Thus, targeting cholesterol metabolism has gained attention as a potential therapeutic method for Alzheimer's disease. Phytoremedies, which are generated from plants and herbs, have shown promise as an attainable therapeutic option for Alzheimer's disease. These remedies contain bioactive compounds like phytochemicals, flavonoids, and polyphenols, which have demonstrated potential in modulating cholesterol metabolism and related pathways. This comprehensive review explores the modulation of cholesterol metabolism by phytoremedies in AD. It delves into the role of cholesterol in brain function, highlighting disruptions observed in AD. Additionally, it examines the underlying molecular mechanisms of cholesterol-related pathology in AD. The review emphasizes the significance of phytoremedies as a potential therapeutic intervention for AD. It discusses the drawbacks of current treatments and the need for alternative strategies addressing cholesterol dysregulation and its consequences. Through an in-depth analysis of specific phytoremedies, the review presents compelling evidence of their potential benefits. Molecular mechanisms underlying phytoremedy effects on cholesterol metabolism are examined, including regulation of cholesterol-related pathways, interactions with Aβ pathology, influence on tau pathology, and anti-inflammatory effects. The review also highlights challenges and future perspectives, emphasizing standardization, clinical evidence, and personalized medicine approaches to maximize therapeutic potential in AD treatment. Overall, phytoremedies offer promise as a potential avenue for AD management, but further research and collaboration are necessary to fully explore their efficacy, safety, and mechanisms of action.
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Affiliation(s)
- Sushruta Koppula
- College of Biomedical and Health Sciences, Konkuk University, Chungju-Si, Chungcheongbuk Do, 27478, Republic of Korea.
| | - Nitu L Wankhede
- Smt. Kishoritai Bhoyar College of Pharmacy, Kamptee, Nagpur, Maharashtra, India- 441002.
| | - Shivkumar S Sammeta
- National Institute of Pharmaceutical Education and Research, Hyderabad, Telangana- 500037.
| | - Prajwali V Shende
- Smt. Kishoritai Bhoyar College of Pharmacy, Kamptee, Nagpur, Maharashtra, India- 441002.
| | - Rupali S Pawar
- Smt. Kishoritai Bhoyar College of Pharmacy, Kamptee, Nagpur, Maharashtra, India- 441002.
| | | | - Mohit D Umare
- Smt. Kishoritai Bhoyar College of Pharmacy, Kamptee, Nagpur, Maharashtra, India- 441002.
| | - Brijesh G Taksande
- Smt. Kishoritai Bhoyar College of Pharmacy, Kamptee, Nagpur, Maharashtra, India- 441002.
| | - Aman B Upaganlawar
- SNJB's Shriman Sureshdada Jain College of Pharmacy, Neminagar, Chandwad, Nashik, Maharashtra, India.
| | - Milind J Umekar
- Smt. Kishoritai Bhoyar College of Pharmacy, Kamptee, Nagpur, Maharashtra, India- 441002.
| | - Spandana Rajendra Kopalli
- Department of Bioscience and Biotechnology, Sejong University, Gwangjin-gu, Seoul 05006, Republic of Korea.
| | - Mayur B Kale
- Smt. Kishoritai Bhoyar College of Pharmacy, Kamptee, Nagpur, Maharashtra, India- 441002.
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Thandivel S, Rajan P, Gunasekar T, Arjunan A, Khute S, Kareti SR, Paranthaman S. In silico molecular docking and dynamic simulation of anti-cholinesterase compounds from the extract of Catunaregam spinosa for possible treatment of Alzheimer's disease. Heliyon 2024; 10:e27880. [PMID: 38560123 PMCID: PMC10981039 DOI: 10.1016/j.heliyon.2024.e27880] [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: 11/10/2023] [Revised: 03/01/2024] [Accepted: 03/07/2024] [Indexed: 04/04/2024] Open
Abstract
Alzheimer's disease (AD), is characterized by a progressive loss of cognitive abilities as well as behavioral symptoms including disorientation, trouble solving problems, personality and mood changes. Acetylcholinesterase (AChE) is a promising target for symptomatic improvement in AD due to its consistent and early cholinergic deficit. This research has investigated the potential compounds from Catunaregam spinosa as AChE inhibitors as a treatment option for AD, aiming to enhance cholinergic neurotransmission and alleviate cognitive decline. Tacrine, the FDA's first approved treatment for AD, is no longer in use due to its hepatotoxicity. Box-Behnken design (BBD) modelling was used to optimise the ultrasonic extraction of alkaloids from the dried fruits of C. spinosa. GC-MS analysis revealed the presence of ninety phytoconstituents in the extract. Among them, eighty-nine new phytoconstituents are reported in this plant fruit for the first time. Out of ninety phytoconstituents, eight phytoconstituents showed the best binding affinity against the AChE enzyme, i.e., PDB IDs 1GQR, 1QTI and 4PQE of AD targets using iGEMDOCK. The lead hits were tested for their drug-like properties and atomistic binding mechanisms using in silico ADMET prediction, LigPlot analysis, and molecular dynamics simulation. The results suggest four compounds such as 1,4,7,10,13,16-hexaoxacyclooctadecane; butanoic acid, 3-methyl-2-[(phenylmethoxy)imino]-, trime; butane-1,2,3,4-tetraol; and D-(+)-ribonic acid.gamma-lactone as potent inhibitors of AChE for the possible treatment of AD.
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Affiliation(s)
- Sathish Thandivel
- Department of Pharmacognosy, Sri Shanmugha College of Pharmacy, Salem district, Sankari, 637 304, Tamil Nadu, India
| | - Poovarasan Rajan
- Department of Pharmacognosy, Sri Shanmugha College of Pharmacy, Salem district, Sankari, 637 304, Tamil Nadu, India
| | - Tamizharasan Gunasekar
- Department of Pharmacognosy, Sri Shanmugha College of Pharmacy, Salem district, Sankari, 637 304, Tamil Nadu, India
| | - Abisek Arjunan
- Department of Pharmacognosy, Sri Shanmugha College of Pharmacy, Salem district, Sankari, 637 304, Tamil Nadu, India
| | - Sulekha Khute
- Institute of Pharmacy, Pandit Ravishankar Shukla University, Raipur, 492 010, Chhattisgarh, India
| | - Srinivasa Rao Kareti
- Department of Pharmacy, Indira Gandhi National Tribal University, Amarkantak, 484 887, Madhya Pradesh, India
| | - Subash Paranthaman
- Department of Pharmacognosy, Sri Shanmugha College of Pharmacy, Salem district, Sankari, 637 304, Tamil Nadu, India
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Dewes Neto B, Gomes-Copeland KKP, Silveira D, Gomes SM, Craesmeyer JMM, de Castro Nizio DA, Fagg CW. Influence of Sucrose and Activated Charcoal on Phytochemistry and Vegetative Growth in Zephyranthes irwiniana (Ravenna) Nic. García (Amaryllidaceae). PLANTS (BASEL, SWITZERLAND) 2024; 13:569. [PMID: 38475416 DOI: 10.3390/plants13050569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Revised: 02/05/2024] [Accepted: 02/15/2024] [Indexed: 03/14/2024]
Abstract
Zephyranthes irwiniana (Ravenna) Nic. García is an endemic, red list threatened species from the Brazilian savanna (Cerrado) with pharmacological potential to treat the symptoms of Alzheimer's Disease (AD). This work analyzed the vegetative growth and phytochemistry of its potential compounds, in response to variations in sucrose concentration and activated carbon (AC). Seeds were germinated in vitro and in the greenhouse. The in vitro bulbs were separated in six treatments with different sucrose concentrations (30, 45 and 60 gL-1) and/or AC (1 gL-1). Biomass increases in individuals grown in the greenhouse were higher than those cultivated in vitro. Sucrose concentration significantly increased biomass and root number. AC had a positive influence on leaf and root size, and a negative influence on root number. GC-MS analyses indicated great variation in the abundance of α-terpenyl-acetate, ethyl linoleate, clionasterol and lycorine between treatments, with maximum concentrations of 53.06%, 38.68, 14.34% and 2.57%, respectively. Histolocalization tests indicated the presence of alkaloids in the leaf chlorenchyma and bulb cataphylls. Finally, the present study provided new evidence that the constitution of the culture medium directly influences the vegetative growth and phytochemistry of this species, providing a good medium condition for propagating the species under threat.
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Affiliation(s)
| | | | - Dâmaris Silveira
- Laboratory of Natural Products, Faculty of Health Sciences, University of Brasilia, Brasília 70910-900, DF, Brazil
| | - Sueli Maria Gomes
- Department of Botany, University of Brasília, Brasília 70910-900, DF, Brazil
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Jiang S, Li WY, Gao BB, Ou YF, Yuan ZF, Zhao QS. Casuattimines A-N, fourteen new Lycopodium alkaloids from Lycopodiastrum casuarinoides with Ca v3.1 channel inhibitory activity. Bioorg Chem 2024; 142:106962. [PMID: 37992623 DOI: 10.1016/j.bioorg.2023.106962] [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: 09/04/2023] [Revised: 10/28/2023] [Accepted: 11/07/2023] [Indexed: 11/24/2023]
Abstract
Two new dimeric Lycopodium alkaloids, casuattimines A and B (1 and 2), along with twelve previously undescribed Lycopodium alkaloids, casuattimines C-N (3-14), and eight known Lycopodium alkaloids, were isolated from Lycopodiastrum casuarinoides. Casuattimines A and B (1 and 2) are the first two ether-linked Lycopodium alkaloid dimers. Casuattimines C and D (3 and 4) are unique Lycopodium alkaloids characterized by a long fatty acid chain. Structural elucidation was achieved through HRESIMS, NMR, and electronic circular dichroism (ECD) calculations. In addition, the absolute configurations of compounds 7, 13, and 14 were determined by single crystal X-ray diffraction. Compounds 1, 2, and 4 demonstrated notable Cav3.1 channel inhibitory activities presenting IC50 values of 10.75 ± 1.02 μM, 9.33 ± 0.79 μM, and 7.14 ± 0.86 μM, respectively. The dynamics of compound 4 against the Cav3.1 channel and preliminary structure-activity relationships of these active Lycopodium alkaloids were also discussed.
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Affiliation(s)
- Shuai Jiang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Wen-Yan Li
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Bei-Bei Gao
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yu-Fei Ou
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zai-Feng Yuan
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Qin-Shi Zhao
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China; University of Chinese Academy of Sciences, Beijing 100049, China.
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Alam K, Ahmad N, Ahmad I, Nafees M. Pharmacological Activities of Rhododendron afghanicum; an Endemic Species of Khyber Pakhtunkhwa, Pakistan. Chem Biodivers 2023; 20:e202301273. [PMID: 37983670 DOI: 10.1002/cbdv.202301273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Revised: 11/14/2023] [Accepted: 11/19/2023] [Indexed: 11/22/2023]
Abstract
Majority of different kinds of metabolites having therapeutic characteristics are thought to be stored in medicinal plants. So, the present study was aimed to explore the crude extract of leaves and stem of R. afghanicum for phytochemical screening and various pharmacological activities. Toxicological studies at 100 mg/kg showed 60 % mortality where its safe dose level was 90 mg/kg. Phytochemical screening revealed the presence of alkaloids, glycosides, flavonoids and tannins in both extracts. Bacterial strains were susceptible to (RLEt) and (RLM) crude extracts except Staphylococcus aureus. RSM showed maximum anti-inflammatory activity (20.16 %) followed by RSEt (20.14 %) where lowest activity was displayed by RLEt (18.46 %). Phytotoxic activity showed a substantial dose-dependent phyto-inhibition of Lemna minor. An outstanding cytotoxic potential was displayed with LD50 values of 9.46 and 13.03 μg/ml in both stem extracts. RLEt demonstrated a dose-dependent pain relief at 30, 60 and 90 mg/kg which was 31 %, 40 % and 52 % respectively. A considerable spasmolytic action was observed by the shrinkage of jejunum muscle in albino mice. RLEt at 1000 ppm showed (17 mm) and RLM at 1000 ppm showed (16 mm) zone of inhibition against Aspergillus niger. These findings support and corroborate the traditional applications of R. afghanicum for treating digestive, analgesic and inflammatory ailments.
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Affiliation(s)
- Khan Alam
- Department of Botany, University of Peshawar, KPK, 25120, Pakistan
| | - Nadeem Ahmad
- Department of Botany, University of Peshawar, KPK, 25120, Pakistan
| | - Imran Ahmad
- Department of Botany, University of Peshawar, KPK, 25120, Pakistan
| | - Muhammad Nafees
- Department of Botany, University of Peshawar, KPK, 25120, Pakistan
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K P, Prasanth DSNBK, Shadakshara MKR, Ahmad SF, Seemaladinne R, Rudrapal M, Pasala PK. Citronellal as a Promising Candidate for Alzheimer's Disease Treatment: A Comprehensive Study on In Silico and In Vivo Anti-Acetylcholine Esterase Activity. Metabolites 2023; 13:1133. [PMID: 37999229 PMCID: PMC10672888 DOI: 10.3390/metabo13111133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2023] [Revised: 10/26/2023] [Accepted: 10/31/2023] [Indexed: 11/25/2023] Open
Abstract
One of the primary therapeutic approaches for managing Alzheimer's disease (AD) involves the modulation of Acetylcholine esterase (AChE) activity to elevate acetylcholine (ACh) levels inside the brain. The current study employed computational chemistry approaches to evaluate the inhibitory effects of CTN on AChE. The docking results showed that Citronellal (CTN) and standard Donepezil (DON) have a binding affinity of -6.5 and -9.2 Kcal/mol, respectively, towards AChE. Further studies using molecular dynamics (MD) simulations were carried out on these two compounds. Binding free energy calculations and ligand-protein binding patterns suggested that CTN has a binding affinity of -12.2078. In contrast, DON has a much stronger binding relationship of -47.9969, indicating that the standard DON has a much higher binding affinity than CTN for AChE. In an in vivo study, Alzheimer-type dementia was induced in mice by scopolamine (1.5 mg/kg/day i.p) for 14 days. CTN was administered (25 and 50 mg/kg. i.p) along with scopolamine (SCO) administration. DON (0.5 mg/kg orally) was used as a reference drug. CTN administration significantly improved the mice's behavior as evaluated by the Morris water maze test, evident from decreased escape latency to 65.4%, and in the CPS test, apparent from reduced escape latency to 69.8% compared to the positive control mice. Moreover, CTN significantly increased the activities of antioxidant enzymes such as catalase and superoxide dismutase (SOD) compared to SCO. Furthermore, CTN administration significantly decreased SCO-induced elevated AChE levels in mice. These results were supported by histopathological and in silico molecular docking studies. CTN may be a potential antioxidant and neuroprotective supplement.
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Affiliation(s)
- Pavani K
- Department of Pharmacology, Santhiram College of Pharmacy, Jawaharlal Nehru Technological University Anantapur, Nandyal 518112, Andhra Pradesh, India;
| | - D S. N. B. K. Prasanth
- Department of Pharmacognosy, KVSR Siddhartha College of Pharmaceutical Sciences, Vijayawada 520010, Andhra Pradesh, India;
| | - Murthy K. R. Shadakshara
- Department of Chemical Engineering, Siddaganga Institute of Technology, Tumkur 572103, Karnataka, India;
| | - Sheikh F. Ahmad
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia
| | | | - Mithun Rudrapal
- Department of Pharmaceutical Sciences, School of Biotechnology and Pharmaceutical Sciences, Vignan’s Foundation for Science, Technology & Research (Deemed to be University), Guntur 522213, Andhra Pradesh, India;
| | - Praveen Kumar Pasala
- Department of Pharmacology, Raghavendra Institute of Pharmaceutical Education and Research, JNTUA, Anantapuramu 515721, Andhra Pradesh, India
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Dong L, Xie HZ, Jia L, Hong L, Li G. Inhibition of Amyloid β Aggregation and Cytotoxicity by Berbamine Hydrochloride. Chemistry 2023; 29:e202301865. [PMID: 37470691 DOI: 10.1002/chem.202301865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2023] [Revised: 07/18/2023] [Accepted: 07/20/2023] [Indexed: 07/21/2023]
Abstract
Alzheimer's disease (AD) continues to be a major global health challenge, and the recent approval of Aduhelm and Leqembi has opened new avenues for its treatment. Small-molecule inhibitors targeting Aβ aggregation hold promise as an alternative to monoclonal antibodies. In this study, we evaluated the ability of berbamine hydrochloride (BBMH), a member of the bisbenzylisoquinoline alkaloids, to reduce Aβ aggregation and cytotoxicity. Thioflavin T kinetics, circular dichroism spectroscopy, and atomic force microscopy results indicated that BBMH effectively inhibited Aβ aggregation. Surface plasmon resonance and molecular docking results further revealed that BBMH could bind to Aβ fibrils, thereby hindering the aggregation process. This physical picture has been confirmed in a quantitative way by chemical kinetics analysis, which showed BBMH tends to bind with the fibril ends and thus prevents the transition from protofibrils to mature fibrils as well as the elongation process. Additionally, our MTT results showed that BBMH was able to reduce the cytotoxicity of Aβ40 on N2a cells. Our results demonstrate, for the first time, the potential of BBMH to inhibit Aβ aggregation and cytotoxicity, offering a promising direction for further research and drug development efforts in the fight against Alzheimer's disease.
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Affiliation(s)
- Li Dong
- Fuzhou Institute of Oceanography, College of Materials and Chemical Engineering, Minjiang University, Fuzhou, Fujian, 350108, China
- Fujian-Taiwan-Hongkong-Macao Science and Technology, Cooperation Base of Intelligent Pharmaceutics, Minjiang University, Fuzhou, Fujian, 350108, China
| | - Huan-Zhang Xie
- Fuzhou Institute of Oceanography, College of Materials and Chemical Engineering, Minjiang University, Fuzhou, Fujian, 350108, China
- Fujian-Taiwan-Hongkong-Macao Science and Technology, Cooperation Base of Intelligent Pharmaceutics, Minjiang University, Fuzhou, Fujian, 350108, China
| | - Lee Jia
- Fuzhou Institute of Oceanography, College of Materials and Chemical Engineering, Minjiang University, Fuzhou, Fujian, 350108, China
- Fujian-Taiwan-Hongkong-Macao Science and Technology, Cooperation Base of Intelligent Pharmaceutics, Minjiang University, Fuzhou, Fujian, 350108, China
| | - Liu Hong
- School of Mathematics, Sun Yat-sen University, Guangzhou, Guangdong, 510275, China
| | - Gao Li
- Fuzhou Institute of Oceanography, College of Materials and Chemical Engineering, Minjiang University, Fuzhou, Fujian, 350108, China
- Fujian-Taiwan-Hongkong-Macao Science and Technology, Cooperation Base of Intelligent Pharmaceutics, Minjiang University, Fuzhou, Fujian, 350108, China
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Cheng L, Tanaka M, Yoshino A, Nagasato Y, Takata F, Dohgu S, Matsui T. A memory-improving dipeptide, Tyr-Pro, can reach the mouse brain after oral administration. Sci Rep 2023; 13:16908. [PMID: 37805661 PMCID: PMC10560274 DOI: 10.1038/s41598-023-44161-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Accepted: 10/04/2023] [Indexed: 10/09/2023] Open
Abstract
The transport and accumulation of orally administered functional food-derived peptides in the brain was not fully explored. Thus, in the present study, we aimed to provide critical evidence regarding brain accumulation of a memory-improving soy dipeptide, Tyr-Pro, following oral administration. Stable isotope-labeled Tyr-Pro (Tyr-[13C5,15N]Pro) was orally administered to male ICR mice at 10 or 100 mg/kg. Surprisingly, the intact labeled Tyr-Pro exhibited maximal plasma and brain levels 15 min after administration (plasma: area under the curve [AUC0-120 min], 1331 ± 267 pmol·min/mL-plasma; brain: AUC0-120 min of 0.34 ± 0.11 pmol·min/mg-dry brain, at 10 mg/kg). In addition, we detected labeled Tyr-Pro in the brain parenchyma, indicating a validated blood-brain-barrier (BBB) transportability. Moreover, we confirmed the preferable accumulation of Tyr-Pro in the hypothalamus, hippocampus, and cortex with > 0.02 pmol/mg-tissue. In conclusion, we provided the first evidence that orally administered Tyr-Pro at 10 mg/kg directly entered the blood circulation with an absorption ratio of 0.15%, of which 2.5% of Tyr-Pro was transported from the plasma to the mouse brain parenchyma.
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Affiliation(s)
- Lihong Cheng
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School of Kyushu University, 744 Motooka, Nishi-Ku, Fukuoka, 819-0395, Japan
| | - Mitsuru Tanaka
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School of Kyushu University, 744 Motooka, Nishi-Ku, Fukuoka, 819-0395, Japan
| | - Atsuko Yoshino
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School of Kyushu University, 744 Motooka, Nishi-Ku, Fukuoka, 819-0395, Japan
| | - Yuki Nagasato
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School of Kyushu University, 744 Motooka, Nishi-Ku, Fukuoka, 819-0395, Japan
| | - Fuyuko Takata
- Department of Pharmaceutical Care and Health Sciences, Faculty of Pharmaceutical Sciences, Fukuoka University, Fukuoka, Japan
| | - Shinya Dohgu
- Department of Pharmaceutical Care and Health Sciences, Faculty of Pharmaceutical Sciences, Fukuoka University, Fukuoka, Japan
| | - Toshiro Matsui
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School of Kyushu University, 744 Motooka, Nishi-Ku, Fukuoka, 819-0395, Japan.
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11
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Bhusal CK, Uti DE, Mukherjee D, Alqahtani T, Alqahtani S, Bhattacharya A, Akash S. Unveiling Nature's potential: Promising natural compounds in Parkinson's disease management. Parkinsonism Relat Disord 2023; 115:105799. [PMID: 37633805 DOI: 10.1016/j.parkreldis.2023.105799] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Revised: 07/25/2023] [Accepted: 08/04/2023] [Indexed: 08/28/2023]
Abstract
Parkinson's disease (PD) is a common neurodegenerative disorder characterized by the progressive degeneration of dopaminergic neurons in the substantia nigra pars compacta. Although the exact etiology of PD remains elusive, growing evidence suggests a complex interplay of genetic, environmental, and lifestyle factors in its development. Despite advances in pharmacological interventions, current treatments primarily focus on managing symptoms rather than altering the disease's underlying course. In recent years, natural phytocompounds have emerged as a promising avenue for PD management. Phytochemicals derived from plants, such as phenolic acids, flavones, phenols, flavonoids, polyphenols, saponins, terpenes, alkaloids, and amino acids, have been extensively studied for their potential neuroprotective effects. These bioactive compounds possess a wide range of therapeutic properties, including antioxidant, anti-inflammatory, anti-apoptotic, and anti-aggregation activities, which may counteract the neurodegenerative processes in PD. This comprehensive review delves into the pathophysiology of PD, with a specific focus on the roles of oxidative stress, mitochondrial dysfunction, and protein malfunction in disease pathogenesis. The review collates a wealth of evidence from preclinical studies and in vitro experiments, highlighting the potential of various phytochemicals in attenuating dopaminergic neuron degeneration, reducing α-synuclein aggregation, and modulating neuroinflammatory responses. Prominent among the natural compounds studied are curcumin, resveratrol, coenzyme Q10, and omega-3 fatty acids, which have demonstrated neuroprotective effects in experimental models of PD. Additionally, flavonoids like baicalein, luteolin, quercetin, and nobiletin, and alkaloids such as berberine and physostigmine, show promise in mitigating PD-associated pathologies. This review emphasizes the need for further research through controlled clinical trials to establish the safety and efficacy of these natural compounds in PD management. Although preclinical evidence is compelling, the translation of these findings into effective therapies for PD necessitates robust clinical investigation. Rigorous evaluation of pharmacokinetics, bioavailability, and potential drug interactions is imperative to pave the way for evidence-based treatment strategies. With the rising interest in natural alternatives and the potential for synergistic effects with conventional therapies, this review serves as a comprehensive resource for pharmaceutical industries, researchers, and clinicians seeking novel therapeutic approaches to combat PD. Harnessing the therapeutic potential of these natural phytocompounds may hold the key to improving the quality of life for PD patients and moving towards disease-modifying therapies in the future.
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Affiliation(s)
- Chandra Kanta Bhusal
- Post Graduate Institute of Medical and Research, Madhya Marg, Sector 12, Chandigarh, 160012, India.
| | - Daniel Ejim Uti
- Department of Biochemistry, Faculty of Basic Medical Sciences, College of Medicine, Federal University of Health Sciences, Otukpo, Benue State, Nigeria.
| | - Dattatreya Mukherjee
- Raiganj Government Medical College and Hospital, Uttar Dinajpur, West Bengal, India.
| | - Taha Alqahtani
- Department of Pharmacology, College of Pharmacy, King Khalid University, Abha, 62529, Saudi Arabia.
| | - Saud Alqahtani
- Department of Pharmacology, College of Pharmacy, King Khalid University, Abha, 62529, Saudi Arabia.
| | - Arghya Bhattacharya
- Department of Pharmacology, Calcutta Institute of Pharmaceutical Technology and Allied Health Science, Uluberia, Howrah, 711316, India.
| | - Shopnil Akash
- Faculty of Allied Health Science, Department of Pharmacy, Daffodil International University, Daffodil Smart City, Ashulia, Savar, Dhaka, 1207, Bangladesh.
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12
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Ogunsuyi OB, Omage FB, Olagoke OC, Oboh G, Rocha JBT. Phytochemicals from African eggplants ( Solanum macrocarpon L) and Black nightshade ( Solanum nigrum L) leaves as acetylcholinesterase inhibitors: an in-silico study. J Biomol Struct Dyn 2023; 41:7725-7734. [PMID: 36165440 DOI: 10.1080/07391102.2022.2124194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Accepted: 09/07/2022] [Indexed: 10/14/2022]
Abstract
Acetylcholinesterase inhibitors (AChEIs) like donepezil are commonly used to treat Alzheimer's disease. AChEIs have also been considered for other therapeutic uses, such as anti-inflammatory neuroprotective agents. Consequently, the use of natural plant products as potential AChEIs can have therapeutic benefits. We previously reported the anticholinesterase properties of the phenolics and alkaloids found in the leaf extracts of two tropical plants with nutritional and ethnobotanical importance-African eggplant (Solanum macrocarpon L) and Black nightshade (Solanum nigrum L). Here, we tested the ability of both extracts to inhibit human erythrocyte AChE (an indirect mediator of pro-inflammatory cytokines production via acetylcholine degradation). We further used molecular docking and MD simulation to identify the potential molecular mechanism(s) of phenolic and alkaloid compounds as human AChEIs. Special focus was given to compounds containing the benzyl group that can establish stacking interactions similar to donepezil (a standard AChEI). Flavone-luteolin rutinosides (LR) were identified as single-binding or dual-binding AChEIs; specifically, we attributed the dual-binding LR4 and LR5 to their linked hexose moiety. This characteristic allows the dual binders to occupy the catalytic triads and the peripheral anionic subsite, while exploring the catalytic gorge. We further delineated the inhibition of human erythrocyte AChE, as the flavone common to both plant extracts-luteolin rutinosides-had positive in silico interactions with AChE. These findings suggest that phytochemicals from S. macrocarpon and S. nigrum with dual binding properties can be potential AChE inhibitors. In fact, compounds such as LR4 and LR5 should be further investigated as potential inhibitors of human AChE and may represent important natural alternatives to donepezil.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Opeyemi Babatunde Ogunsuyi
- Departamento de Bioquímica e Biologia Molecular, Centro de Ciências Naturais e Exatas (CCNE), Universidade Federal de Santa Maria, Santa Maria, Rio Grande do Sul, Brazil
- Department of Biochemistry, Federal University of Technology, Akure, Nigeria
- Department of Biomedical Technology, Federal University of Technology, Akure, Nigeria
| | - Folorunsho Bright Omage
- Departamento de Bioquímica e Biologia Molecular, Centro de Ciências Naturais e Exatas (CCNE), Universidade Federal de Santa Maria, Santa Maria, Rio Grande do Sul, Brazil
| | - Olawande Chinedu Olagoke
- Division of Gastroenterology, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Ganiyu Oboh
- Department of Biochemistry, Federal University of Technology, Akure, Nigeria
| | - João Batista Teixeria Rocha
- Departamento de Bioquímica e Biologia Molecular, Centro de Ciências Naturais e Exatas (CCNE), Universidade Federal de Santa Maria, Santa Maria, Rio Grande do Sul, Brazil
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13
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Li W, Rang Y, Liu H, Liu C. Update on new trends and progress of natural active ingredients in the intervention of Alzheimer's disease, based on understanding of traditional Chinese and Western relevant theories: A review. Phytother Res 2023; 37:3744-3764. [PMID: 37380605 DOI: 10.1002/ptr.7908] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Revised: 05/17/2023] [Accepted: 05/18/2023] [Indexed: 06/30/2023]
Abstract
Alzheimer's disease (AD) is one of the major neurological disorders causing death in the elderly worldwide. As a neurodegenerative disease that is difficult to prevent and cure, the pathogenesis of AD is complex and there is no effective cure. A variety of natural products derived from plants have been reported to have promising anti-AD activities, including flavonoids, terpenes, phenolic acids and alkaloids, which can effectively relieve the symptoms of AD in a variety of ways. This paper mainly reviews the pharmacological activity and mechanisms of natural products against AD. Although the clinical efficacy of these plants still needs to be determined by further high-quality studies, it may also provide a basis for future researchers to study anti-AD in depth.
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Affiliation(s)
- Weiye Li
- College of Food Science, South China Agricultural University, Guangzhou, China
- The Key Laboratory of Food Quality and Safety of Guangdong Province, Guangzhou, China
| | - Yifeng Rang
- College of Food Science, South China Agricultural University, Guangzhou, China
- The Key Laboratory of Food Quality and Safety of Guangdong Province, Guangzhou, China
| | - Huan Liu
- College of Food Science, South China Agricultural University, Guangzhou, China
- The Key Laboratory of Food Quality and Safety of Guangdong Province, Guangzhou, China
| | - Chunhong Liu
- College of Food Science, South China Agricultural University, Guangzhou, China
- The Key Laboratory of Food Quality and Safety of Guangdong Province, Guangzhou, China
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14
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Hong DD, Thom LT, Ha NC, Thu NTH, Hien HTM, Tam LT, Dat NM, Duc TM, Tru NV, Hang NTM, Ambati RR. Isolation of Fucoxanthin from Sargassum oligocystum Montagne, 1845 Seaweed in Vietnam and Its Neuroprotective Activity. Biomedicines 2023; 11:2310. [PMID: 37626806 PMCID: PMC10452663 DOI: 10.3390/biomedicines11082310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 08/08/2023] [Accepted: 08/17/2023] [Indexed: 08/27/2023] Open
Abstract
Fucoxanthin extracted and purified from Vietnamese Sargassum oligocystum Montagne, 1845 exhibits various biological activities. In this study, the ability of fucoxanthin to inhibit acetylcholinesterase (AChE), the antioxidant activities, and the expression of antioxidant enzymes were investigated. Fucoxanthin isolated from Vietnamese S. oligocystum showed no cytotoxic effects; moreover, it exhibited AChE inhibitory activity (with an IC50 value of 130.12 ± 6.65 μg mL-1) and antioxidant activity (with an IC50 value of 3.42 ± 0.15 mg mL-1). At concentrations of 50 and 100 µg mL-1, fucoxanthin provided protection against amyloid β-protein fragment 25-35-induced neurotoxicity in a C6 neuronal cell line, and the survival of C6 cells was higher than 81.01% and 80.98%, respectively, compared to the control group (59%). Moreover, antioxidant enzyme activity and quantitative PCR analysis suggested that the neuroprotective effect of fucoxanthin resulted from regulation of the gene expression of antioxidant enzymes (CAT and GPx) and ER pathways (caspase-3 and Bax), as well as the promotion of expression of genes involved in PI3K/Akt signaling (GSK-3β), autophagy (p62 and ATG5), and the biosynthesis of ACh (VAChT and ChAT). Therefore, fucoxanthin extracted from the seaweed S. oligocystum in Vietnam is a potential feedstock source for the production of health foods that exert neuroprotective effects.
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Affiliation(s)
- Dang Diem Hong
- Institute of Biotechnology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Str., Cau Giay, Hanoi 100000, Vietnam; (L.T.T.); (N.C.H.); (N.T.H.T.); (H.T.M.H.); (L.T.T.); (N.M.D.); (N.V.T.)
- Department of Microbiology, Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Str., Cau Giay, Hanoi 100000, Vietnam
| | - Le Thi Thom
- Institute of Biotechnology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Str., Cau Giay, Hanoi 100000, Vietnam; (L.T.T.); (N.C.H.); (N.T.H.T.); (H.T.M.H.); (L.T.T.); (N.M.D.); (N.V.T.)
| | - Nguyen Cam Ha
- Institute of Biotechnology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Str., Cau Giay, Hanoi 100000, Vietnam; (L.T.T.); (N.C.H.); (N.T.H.T.); (H.T.M.H.); (L.T.T.); (N.M.D.); (N.V.T.)
| | - Ngo Thi Hoai Thu
- Institute of Biotechnology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Str., Cau Giay, Hanoi 100000, Vietnam; (L.T.T.); (N.C.H.); (N.T.H.T.); (H.T.M.H.); (L.T.T.); (N.M.D.); (N.V.T.)
| | - Hoang Thi Minh Hien
- Institute of Biotechnology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Str., Cau Giay, Hanoi 100000, Vietnam; (L.T.T.); (N.C.H.); (N.T.H.T.); (H.T.M.H.); (L.T.T.); (N.M.D.); (N.V.T.)
| | - Luu Thi Tam
- Institute of Biotechnology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Str., Cau Giay, Hanoi 100000, Vietnam; (L.T.T.); (N.C.H.); (N.T.H.T.); (H.T.M.H.); (L.T.T.); (N.M.D.); (N.V.T.)
| | - Nguyen Manh Dat
- Institute of Biotechnology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Str., Cau Giay, Hanoi 100000, Vietnam; (L.T.T.); (N.C.H.); (N.T.H.T.); (H.T.M.H.); (L.T.T.); (N.M.D.); (N.V.T.)
| | - Tran Mai Duc
- Nha Trang Institute of Technology Research and Application, Vietnam Academy of Science and Technology, Nha Trang 57100, Vietnam;
| | - Nguyen Van Tru
- Institute of Biotechnology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Str., Cau Giay, Hanoi 100000, Vietnam; (L.T.T.); (N.C.H.); (N.T.H.T.); (H.T.M.H.); (L.T.T.); (N.M.D.); (N.V.T.)
| | - Nguyen Thi Minh Hang
- Institute of Marine Biochemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Str., Cau Giay, Hanoi 100000, Vietnam;
| | - Ranga Rao Ambati
- Department of Biotechnology, School of Biotechnology and Pharmaceutical Sciences, Vignan’s Foundation for Science, Technology and Research (Deemed to Be University), Vadlamudi, Guntur 522213, India;
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15
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Chhabra S, Mehan S. Matrine exerts its neuroprotective effects by modulating multiple neuronal pathways. Metab Brain Dis 2023; 38:1471-1499. [PMID: 37103719 DOI: 10.1007/s11011-023-01214-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Accepted: 04/10/2023] [Indexed: 04/28/2023]
Abstract
Recent evidence suggests that misfolding, clumping, and accumulation of proteins in the brain may be common causes and pathogenic mechanism for several neurological illnesses. This causes neuronal structural deterioration and disruption of neural circuits. Research from various fields supports this idea, indicating that developing a single treatment for several severe conditions might be possible. Phytochemicals from medicinal plants play an essential part in maintaining the brain's chemical equilibrium by affecting the proximity of neurons. Matrine is a tetracyclo-quinolizidine alkaloid derived from the plant Sophora flavescens Aiton. Matrine has been shown to have a therapeutic effect on Multiple Sclerosis, Alzheimer's disease, and various other neurological disorders. Numerous studies have demonstrated that matrine protects neurons by altering multiple signalling pathways and crossing the blood-brain barrier. As a result, matrine may have therapeutic utility in the treatment of a variety of neurocomplications. This work aims to serve as a foundation for future clinical research by reviewing the current state of matrine as a neuroprotective agent and its potential therapeutic application in treating neurodegenerative and neuropsychiatric illnesses. Future research will answer many concerns and lead to fascinating discoveries that could impact other aspects of matrine.
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Affiliation(s)
- Swesha Chhabra
- Division of Neuroscience, Department of Pharmacology, ISF College of Pharmacy, Moga, 142001, Punjab, India
| | - Sidharth Mehan
- Division of Neuroscience, Department of Pharmacology, ISF College of Pharmacy, Moga, 142001, Punjab, India.
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16
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Jadimurthy R, Jagadish S, Nayak SC, Kumar S, Mohan CD, Rangappa KS. Phytochemicals as Invaluable Sources of Potent Antimicrobial Agents to Combat Antibiotic Resistance. Life (Basel) 2023; 13:life13040948. [PMID: 37109477 PMCID: PMC10145550 DOI: 10.3390/life13040948] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Revised: 03/04/2023] [Accepted: 03/29/2023] [Indexed: 04/08/2023] Open
Abstract
Plants have been used for therapeutic purposes against various human ailments for several centuries. Plant-derived natural compounds have been implemented in clinics against microbial diseases. Unfortunately, the emergence of antimicrobial resistance has significantly reduced the efficacy of existing standard antimicrobials. The World Health Organization (WHO) has declared antimicrobial resistance as one of the top 10 global public health threats facing humanity. Therefore, it is the need of the hour to discover new antimicrobial agents against drug-resistant pathogens. In the present article, we have discussed the importance of plant metabolites in the context of their medicinal applications and elaborated on their mechanism of antimicrobial action against human pathogens. The WHO has categorized some drug-resistant bacteria and fungi as critical and high priority based on the need to develope new drugs, and we have considered the plant metabolites that target these bacteria and fungi. We have also emphasized the role of phytochemicals that target deadly viruses such as COVID-19, Ebola, and dengue. Additionally, we have also elaborated on the synergetic effect of plant-derived compounds with standard antimicrobials against clinically important microbes. Overall, this article provides an overview of the importance of considering phytogenous compounds in the development of antimicrobial compounds as therapeutic agents against drug-resistant microbes.
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Affiliation(s)
- Ragi Jadimurthy
- Department of Studies in Molecular Biology, University of Mysore, Manasagangotri, Mysore 570006, India
| | - Swamy Jagadish
- Department of Studies in Molecular Biology, University of Mysore, Manasagangotri, Mysore 570006, India
| | - Siddaiah Chandra Nayak
- Department of Studies in Biotechnology, University of Mysore, Manasagangotri, Mysore 570006, India
| | - Sumana Kumar
- Department of Microbiology, Faculty of Life Sciences, JSS Academy of Higher Education and Research, Mysore 570015, India
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Sharma P, Singh M. An ongoing journey of chalcone analogues as single and multi-target ligands in the field of Alzheimer's disease: A review with structural aspects. Life Sci 2023; 320:121568. [PMID: 36925061 DOI: 10.1016/j.lfs.2023.121568] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Revised: 03/03/2023] [Accepted: 03/07/2023] [Indexed: 03/17/2023]
Abstract
Alzheimer's disease (AD) is a chronic and irreversible neurodegenerative disorder with progressive dementia and cognitive impairment. AD poses severe health challenge in elderly people and become one of the leading causes of death worldwide. It possesses complex pathophysiology with several hypotheses (cholinergic hypothesis, amyloid hypothesis, tau hypothesis, oxidative stress, mitochondrial dysfunction etc.). Several attempts have been made for the management of multifactorial AD. Acetylcholinesterase is the only target has been widely explored in the management of AD to the date. The current review set forth the chalcone based natural, semi-synthetic and synthetic compounds in the search of potential anti-Alzheimer's agents. The main highlights of current review emphasizes on chalcone target different enzymes and pathways like Acetylcholinesterase, β-secretase (BACE1), tau proteins, MAO, free radicals, Advanced glycation end Products (AGEs) etc. and their structure activity relationships contributing in the inhibition of above mentioned various targets of AD.
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Affiliation(s)
- Pratibha Sharma
- Chitkara College of Pharmacy, Chitkara University, Punjab, India
| | - Manjinder Singh
- Chitkara College of Pharmacy, Chitkara University, Punjab, India.
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He M, Park C, Shin Y, Kim J, Cho E. N-Feruloyl Serotonin Attenuates Neuronal Oxidative Stress and Apoptosis in Aβ 25-35-Treated Human Neuroblastoma SH-SY5Y Cells. Molecules 2023; 28:molecules28041610. [PMID: 36838597 PMCID: PMC9963151 DOI: 10.3390/molecules28041610] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Revised: 01/25/2023] [Accepted: 02/05/2023] [Indexed: 02/10/2023] Open
Abstract
Amyloid-beta (Aβ) aggregation and deposition have been identified as a critical feature in the pathology of Alzheimer's disease (AD), with a series of functional alterations including neuronal oxidative stress and apoptosis. N-feruloyl serotonin (FS) is a plant-derived component that exerts antioxidant activity. This study investigated the protective effects of FS on Aβ25-35-treated neuronal damage by regulation of oxidative stress and apoptosis in human neuroblastoma SH-SY5Y cells. The radical scavenging activities increased with the concentration of FS, exhibiting in vitro antioxidant activity. The Aβ25-35-treated SH-SY5Y cells exerted neuronal cell injury by decreased cell viability and elevated reactive oxygen species, but that was recovered by FS treatment. In addition, treatment of FS increased anti-apoptotic factor B-cell lymphoma protein 2 (Bcl-2) and decreased the pro-apoptotic factor Bcl-2-associated X protein. The FS attenuated Aβ-stimulated neuronal apoptosis by regulations of mitogen-activated protein kinase signaling pathways. Moreover, activated CREB-BDNF signaling was observed by the treatment of FS in Aβ25-35-induced SH-SY5Y cells. These results demonstrate that FS shows potential neuroprotective effects on Aβ25-35-induced neuronal damage by attenuation of oxidative stress and apoptosis, and suggest that FS may be considered a promising candidate for the treatment of AD.
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Affiliation(s)
- Meitong He
- Department of Food Science and Nutrition, Kimchi Research Institute, Pusan National University, Busan 46241, Republic of Korea
| | - Chanhum Park
- Institute of New Frontier Research Team, Research Institute of Medical-Bio Convergence, Hallym University, Chuncheon 24252, Republic of Korea
| | - Yusu Shin
- Department of Medicinal Crop Research, National Institute of Horticultural and Herbal Science, Rural Development Administration, Eumseong 27709, Republic of Korea
| | - Jihyun Kim
- Department of Food Science and Nutrition, Gyeongsang National University, Jinju 52725, Republic of Korea
- Correspondence: (J.K.); (E.C.)
| | - Eunju Cho
- Department of Food Science and Nutrition, Kimchi Research Institute, Pusan National University, Busan 46241, Republic of Korea
- Correspondence: (J.K.); (E.C.)
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Anti-Neuroinflammatory Potential of Natural Products in the Treatment of Alzheimer's Disease. Molecules 2023; 28:molecules28031486. [PMID: 36771152 PMCID: PMC9920976 DOI: 10.3390/molecules28031486] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 01/24/2023] [Accepted: 01/28/2023] [Indexed: 02/05/2023] Open
Abstract
Alzheimer's disease (AD) is an age-related chronic progressive neurodegenerative disease, which is the main cause of dementia in the elderly. Much evidence shows that the onset and late symptoms of AD are caused by multiple factors. Among them, aging is the main factor in the pathogenesis of AD, and the most important risk factor for AD is neuroinflammation. So far, there is no cure for AD, but the relationship between neuroinflammation and AD may provide a new strategy for the treatment of AD. We herein discussed the main etiology hypothesis of AD and the role of neuroinflammation in AD, as well as anti-inflammatory natural products with the potential to prevent and alleviate AD symptoms, including alkaloids, steroids, terpenoids, flavonoids and polyphenols, which are available with great potential for the development of anti-AD drugs.
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Bashir DJ, Manzoor S, Sarfaraj M, Afzal SM, Bashir M, Nidhi, Rastogi S, Arora I, Samim M. Magnoflorine-Loaded Chitosan Collagen Nanocapsules Ameliorate Cognitive Deficit in Scopolamine-Induced Alzheimer's Disease-like Conditions in a Rat Model by Downregulating IL-1β, IL-6, TNF-α, and Oxidative Stress and Upregulating Brain-Derived Neurotrophic Factor and DCX Expressions. ACS OMEGA 2023; 8:2227-2236. [PMID: 36687096 PMCID: PMC9850486 DOI: 10.1021/acsomega.2c06467] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Accepted: 12/12/2022] [Indexed: 08/19/2023]
Abstract
Dementia or the loss of cognitive functioning is one of the major health issues in elderly people. Alzheimer's disease (AD) is one of the common forms of dementia. Treatment chiefly involves the use of acetylcholinesterase (AChE) inhibitors in AD. However, oxidative stress has also been found to be involved in the proliferation of the disease. Magnoflorine is one of the active compounds of Coptidis Rhizoma and has high anti-oxidative properties. Active principle-loaded nanoparticles have shown increased efficiency for neurodegenerative diseases due to their ability to cross the blood-brain barrier more easily. An in vitro study involving magnoflorine-loaded chitosan collagen nanocapsules (MF-CCNc) has shown them to possess inhibitory effects against oxidative stress and to some extent on AChE as well. In the current study, both nootropic and anti-amnesic effects of magnoflorine and MF-CCNc on scopolamine-induced amnesia in rats were evaluated. The treatment was done intraperitoneally (i.p.) once daily for 17 consecutive days with MF-CCNc (0.25, 0.5, and 1 mg), magnoflorine (1 mg), and donepezil (1 mg). To induce amnesia, hence, cognitive deficit rats were induced with scopolamine (1 mg/kg) daily for the last 9 days. Novel object recognition (NOR) and elevated plus maze (EPM) behavioral analysis were done to assess memory functioning. Hippocampal tissues were extracted to study the effect on biochemicals (AChE, MDA, SOD, and CAT), pro-inflammatory cytokines (IL-1β, IL-6, and TNF-α), and immunohistochemistry (brain-derived neurotrophic factor (BDNF) and DCX). MF-CCNc showed memory-enhancing effects in nootropic as well as chronic scopolamine-treated rats in NOR and an increase in inflexion ratio in EPM. MF-CCNc reduced the levels of AChE and MDA while increasing SOD and CAT levels in the hippocampus. MF-CCNc further lowered the levels of pro-inflammatory cytokines IL-1β, IL-6, and TNF-α. These nanocapsules further increased the expression of BDNF and DCX that are necessary for adult neurogenesis. From the research findings, it can be concluded that MF-CCNc has high anti-amnesic properties and could be a promising candidate for the treatment of AD.
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Affiliation(s)
- Dar Junaid Bashir
- Department
of Chemistry, School of Chemical and Life Sciences, Jamia Hamdard, New Delhi 110062, India
| | - Saliha Manzoor
- Department
of Chemistry, School of Chemical and Life Sciences, Jamia Hamdard, New Delhi 110062, India
| | - Mohd Sarfaraj
- Department
of Chemistry, School of Chemical and Life Sciences, Jamia Hamdard, New Delhi 110062, India
| | - Shekh Mohammad Afzal
- Department
of Medical Elementology & Toxicology, School of Chemical and Life
Sciences, Jamia Hamdard, New Delhi 110062, India
| | - Masarat Bashir
- COTS,
Mirgund, Shalimar, SKUAST Kashmir, Srinagar, Jammu and Kashmir 193121, India
| | - Nidhi
- Centre
for Translational and Clinical Research, Jamia Hamdard, New Delhi 110062, India
| | - Shweta Rastogi
- Hansraj
College, Delhi University, New Delhi, Delhi 110007, India
| | - Indu Arora
- Shaheed
Rajguru College of Applied Sciences for Women, Vasundhara Enclave, New
Delhi, Delhi 110096, India
| | - Mohammed Samim
- Department
of Chemistry, School of Chemical and Life Sciences, Jamia Hamdard, New Delhi 110062, India
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Bakrim S, Aboulaghras S, El Menyiy N, El Omari N, Assaggaf H, Lee LH, Montesano D, Gallo M, Zengin G, AlDhaheri Y, Bouyahya A. Phytochemical Compounds and Nanoparticles as Phytochemical Delivery Systems for Alzheimer's Disease Management. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27249043. [PMID: 36558176 PMCID: PMC9781052 DOI: 10.3390/molecules27249043] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/06/2022] [Revised: 12/04/2022] [Accepted: 12/09/2022] [Indexed: 12/23/2022]
Abstract
Alzheimer's disease remains one of the most widespread neurodegenerative reasons for dementia worldwide and is associated with considerable mortality and morbidity. Therefore, it has been considered a priority for research. Indeed, several risk factors are involved in the complexity of the therapeutic ways of this pathology, including age, traumatic brain injury, genetics, exposure to aluminum, infections, diabetes, vascular diseases, hypertension, dyslipidemia, and obesity. The pathophysiology of Alzheimer's disease is mostly associated with hyperphosphorylated protein in the neuronal cytoplasm and extracellular plaques of the insoluble β-amyloid peptide. Therefore, the management of this pathology needs the screening of drugs targeting different pathological levels, such as acetylcholinesterase (AchE), amyloid β formation, and lipoxygenase inhibitors. Among the pharmacological strategies used for the management of Alzheimer's disease, natural drugs are considered a promising therapeutic strategy. Indeed, bioactive compounds isolated from different natural sources exhibit important anti-Alzheimer effects by their effectiveness in promoting neuroplasticity and protecting against neurodegeneration as well as neuroinflammation and oxidative stress in the brain. These effects involve different sub-cellular, cellular, and/or molecular mechanisms, such as the inhibition of acetylcholinesterase (AchE), the modulation of signaling pathways, and the inhibition of oxidative stress. Moreover, some nanoparticles were recently used as phytochemical delivery systems to improve the effects of phytochemical compounds against Alzheimer's disease. Therefore, the present work aims to provide a comprehensive overview of the key advances concerning nano-drug delivery applications of phytochemicals for Alzheimer's disease management.
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Affiliation(s)
- Saad Bakrim
- Geo-Bio-Environment Engineering and Innovation Laboratory, Molecular Engineering, Biotechnology and Innovation Team, Polydisciplinary Faculty of Taroudant, Ibn Zohr University, Agadir 80000, Morocco
| | - Sara Aboulaghras
- Physiology and Physiopathology Team, Faculty of Sciences, Genomic of Human Pathologies Research, Mohammed V University in Rabat, Rabat 10100, Morocco
| | - Naoual El Menyiy
- Laboratory of Pharmacology, National Agency of Medicinal and Aromatic Plants, Taounate 34025, Morocco
| | - Nasreddine El Omari
- Laboratory of Histology, Embryology and Cytogenetic, Faculty of Medicine and Pharmacy, Mohammed V University in Rabat, Rabat 10100, Morocco
| | - Hamza Assaggaf
- Department of Laboratory Medicine, Faculty of Applied Medical Sciences, Umm Al-Qura University, Makkah 21955, Saudi Arabia
| | - Learn-Han Lee
- Novel Bacteria and Drug Discovery Research Group (NBDD), Microbiome and Bioresource Research Strength (MBRS), Jeffrey Cheah School of Medicine and Health Sciences, Monash University Malaysia, Subang Jaya 47500, Malaysia
| | - Domenico Montesano
- Department of Pharmacy, University of Naples Federico II, Via D. Montesano 49, 80131 Naples, Italy
| | - Monica Gallo
- Department of Molecular Medicine and Medical Biotechnology, University of Naples Federico II, Via Pansini 5, 80131 Naples, Italy
| | - Gokhan Zengin
- Department of Biology, Science Faculty, Selcuk University, 42130 Konya, Turkey
- Correspondence: (G.Z.); (Y.A.); (A.B.)
| | - Yusra AlDhaheri
- Department of Biology, College of Science, United Arab Emirates University, Al Ain 15551, United Arab Emirates
- Correspondence: (G.Z.); (Y.A.); (A.B.)
| | - Abdelhakim Bouyahya
- Laboratory of Human Pathologies Biology, Department of Biology, Faculty of Sciences, Mohammed V University in Rabat, Rabat 10106, Morocco
- Correspondence: (G.Z.); (Y.A.); (A.B.)
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22
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Caffeine intoxication: Behavioral and electrocorticographic patterns in Wistar rats. Food Chem Toxicol 2022; 170:113452. [DOI: 10.1016/j.fct.2022.113452] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Revised: 09/06/2022] [Accepted: 09/28/2022] [Indexed: 11/12/2022]
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23
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Synthesis and Biological Activity of N-acyl Anabasine and Cytisine Derivatives with Adamantane, Pyridine and 1,2-Azole Fragments. Molecules 2022; 27:molecules27217387. [DOI: 10.3390/molecules27217387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Revised: 10/26/2022] [Accepted: 10/27/2022] [Indexed: 11/06/2022] Open
Abstract
A series of N-acyl derivatives of anabasine and cytisine were prepared, to discover novel, natural product-based medicinal agents. All synthesized compounds were tested for antimicrobial, antifungal, antiviral and analgesic activity. The most pronounced antibacterial activity was shown by the compounds with isoxazole fragments, while the adamantane derivatives showed the greatest antiviral effect. It was found that the majority of anabasine derivatives showed significant analgesic activity, reducing the pain response of animals to the irritating effect of acetic acid. The presence of a high level of antimicrobial and antiviral activity in newly synthesized compounds makes it possible to consider them promising for further study of their pharmacological properties.
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Predes D, Maia LA, Matias I, Araujo HPM, Soares C, Barros-Aragão FGQ, Oliveira LFS, Reis RR, Amado NG, Simas ABC, Mendes FA, Gomes FCA, Figueiredo CP, Abreu JG. The Flavonol Quercitrin Hinders GSK3 Activity and Potentiates the Wnt/β-Catenin Signaling Pathway. Int J Mol Sci 2022; 23:ijms232012078. [PMID: 36292931 PMCID: PMC9602613 DOI: 10.3390/ijms232012078] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Revised: 09/09/2022] [Accepted: 09/10/2022] [Indexed: 11/23/2022] Open
Abstract
The Wnt/β-catenin signaling pathway dictates cell proliferation and differentiation during embryonic development and tissue homeostasis. Its deregulation is associated with many pathological conditions, including neurodegenerative disease, frequently downregulated. The lack of efficient treatment for these diseases, including Alzheimer’s disease (AD), makes Wnt signaling an attractive target for therapies. Interestingly, novel Wnt signaling activating compounds are less frequently described than inhibitors, turning the quest for novel positive modulators even more appealing. In that sense, natural compounds are an outstanding source of potential drug leads. Here, we combine different experimental models, cell-based approaches, neuronal culture assays, and rodent behavior tests with Xenopus laevis phenotypic analysis to characterize quercitrin, a natural compound, as a novel Wnt signaling potentiator. We find that quercitrin potentiates the signaling in a concentration-dependent manner and increases the occurrence of the Xenopus secondary axis phenotype mediated by Xwnt8 injection. Using a GSK3 biosensor, we describe that quercitrin impairs GSK3 activity and increases phosphorylated GSK3β S9 levels. Treatment with XAV939, an inhibitor downstream of GSK3, impairs the quercitrin-mediated effect. Next, we show that quercitrin potentiates the Wnt3a-synaptogenic effect in hippocampal neurons in culture, which is blocked by XAV939. Quercitrin treatment also rescues the hippocampal synapse loss induced by intracerebroventricular injection of amyloid-β oligomers (AβO) in mice. Finally, quercitrin rescues AβO-mediated memory impairment, which is prevented by XAV939. Thus, our study uncovers a novel function for quercitrin as a Wnt/β-catenin signaling potentiator, describes its mechanism of action, and opens new avenues for AD treatments.
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Affiliation(s)
- Danilo Predes
- Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, Brazil
| | - Lorena A. Maia
- Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, Brazil
| | - Isadora Matias
- Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, Brazil
| | | | - Carolina Soares
- Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-901, Brazil
| | | | - Luiz F. S. Oliveira
- Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, Brazil
| | - Renata R. Reis
- Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, Brazil
| | - Nathalia G. Amado
- Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, Brazil
| | - Alessandro B. C. Simas
- Instituto de Pesquisas de Produtos Naturais Walter Mors, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-901, Brazil
| | - Fabio A. Mendes
- Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, Brazil
| | - Flávia C. A. Gomes
- Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, Brazil
| | - Claudia P. Figueiredo
- Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-901, Brazil
| | - Jose G. Abreu
- Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, Brazil
- Correspondence: ; Tel.: +55-21-3938-6486
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Priscilla J, Dhas DA, Joe IH, Balachandran S. Spectroscopic (FT-IR, FT-Raman) investigation, topological (QTAIM, RDG, ELF) analysis, drug-likeness and anti-inflammatory activity study on 2-methylaminobenzoic acid alkaloid. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.134261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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26
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Exploring the industrial importance of a miracle herb Withania somnifera (L.) Dunal: Authentication through chemical profiling, in vitro studies and computational analyses. Process Biochem 2022. [DOI: 10.1016/j.procbio.2022.07.028] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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27
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Toll-Like Receptor 4: A Promising Therapeutic Target for Alzheimer's Disease. Mediators Inflamm 2022; 2022:7924199. [PMID: 36046763 PMCID: PMC9420645 DOI: 10.1155/2022/7924199] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Revised: 08/05/2022] [Accepted: 08/09/2022] [Indexed: 11/18/2022] Open
Abstract
Alzheimer's disease (AD) is a progressive neurodegenerative disease that primarily manifests as memory deficits and cognitive impairment and has created health challenges for patients and society. In AD, amyloid β-protein (Aβ) induces Toll-like receptor 4 (TLR4) activation in microglia. Activation of TLR4 induces downstream signaling pathways and promotes the generation of proinflammatory cytokines, such as tumor necrosis factor-α (TNF-α), interleukin-6 (IL-6), and interleukin-1β (IL-1β), which also trigger the activation of astrocytes and influence amyloid-dependent neuronal death. Therefore, TLR4 may be an important molecular target for treating AD by regulating neuroinflammation. Moreover, TLR4 regulates apoptosis, autophagy, and gut microbiota and is closely related to AD. This article reviews the role of TLR4 in the pathogenesis of AD and a range of potential therapies targeting TLR4 for AD. Elucidating the regulatory mechanism of TLR4 in AD may provide valuable clues for developing new therapeutic strategies for AD.
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28
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Phytochemical Classification of Medicinal Plants Used in the Treatment of Kidney Disease Based on Traditional Persian Medicine. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2022; 2022:8022599. [PMID: 35958915 PMCID: PMC9357710 DOI: 10.1155/2022/8022599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/19/2022] [Revised: 05/09/2022] [Accepted: 07/01/2022] [Indexed: 12/02/2022]
Abstract
Methods This review was focused on studying the various secondary metabolites in model plants of Iranian herbal medicine known as treatment of kidney diseases in traditional Persian medicine textbooks including Makhzan-ol-Advieh, The Canon of Medicine, and Taghvim al-Abdan fi Tadbir al-Ensan. Results Secondary metabolites of 94 medical plants belonging to 42 families were reported with their scientific and family name. Conclusion Although herbal medicines are gaining rapid popularity among people and the pharmaceutical industry, the understandings of the phytochemical and therapeutic properties of medicinal plant are important for developing effective nephroprotective medicines. Therefore, the relationship between traditional uses and biological properties should be clearly verified through further studies.
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29
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Li XT, Zhou JC, Zhou Y, Ren YS, Huang YH, Wang SM, Tan L, Yang ZY, Ge YW. Pharmacological effects of Eleutherococcus senticosus on the neurological disorders. Phytother Res 2022; 36:3490-3504. [PMID: 35844057 DOI: 10.1002/ptr.7555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Revised: 06/02/2022] [Accepted: 06/23/2022] [Indexed: 11/07/2022]
Abstract
Eleutherococcus senticosus is a medicinal plant widely used in traditional medicine and edible remedies with effects on anti-fatigue, sleep improvement, and memory enhancement. Recently, the application of E. senticosus to neurological disorders has been a focus. However, its overall pharmacological effect on neural diseases and relevant mechanisms are needed in an in-depth summary. In this review, the traditional uses and the therapeutic effect of E. senticosus on the treatment of fatigue, depression, Alzheimer's disease, Parkinson's disease, and cerebral ischemia were summarized. In addition, the underlying mechanisms involved in the anti-oxidative damage, anti-inflammation, neurotransmitter modulation, improvement of neuronal growth, and anti-apoptosis were discussed. This review will accelerate the understanding of the neuroprotective effects brought from the E. senticosus, and impetus its development as a phytotherapy agent against neurological disorders.
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Affiliation(s)
- Xi-Tao Li
- School of Chinese Materia Medica, Guangdong Pharmaceutical University, Guangzhou, China.,Key Laboratory of Digital Quality Evaluation of Chinese Materia Medica of State Administration of TCM, Guangdong Pharmaceutical University, Guangzhou, China
| | - Jie-Chun Zhou
- School of Chinese Materia Medica, Guangdong Pharmaceutical University, Guangzhou, China.,Key Laboratory of Digital Quality Evaluation of Chinese Materia Medica of State Administration of TCM, Guangdong Pharmaceutical University, Guangzhou, China
| | - Yu Zhou
- School of Chinese Materia Medica, Guangdong Pharmaceutical University, Guangzhou, China.,Key Laboratory of Digital Quality Evaluation of Chinese Materia Medica of State Administration of TCM, Guangdong Pharmaceutical University, Guangzhou, China
| | - Ying-Shan Ren
- School of Chinese Materia Medica, Guangdong Pharmaceutical University, Guangzhou, China.,Key Laboratory of Digital Quality Evaluation of Chinese Materia Medica of State Administration of TCM, Guangdong Pharmaceutical University, Guangzhou, China
| | - Yu-Hong Huang
- School of Chinese Materia Medica, Guangdong Pharmaceutical University, Guangzhou, China.,Key Laboratory of Digital Quality Evaluation of Chinese Materia Medica of State Administration of TCM, Guangdong Pharmaceutical University, Guangzhou, China
| | - Shu-Mei Wang
- School of Chinese Materia Medica, Guangdong Pharmaceutical University, Guangzhou, China.,Key Laboratory of Digital Quality Evaluation of Chinese Materia Medica of State Administration of TCM, Guangdong Pharmaceutical University, Guangzhou, China
| | - Long Tan
- State Key Laboratory of Respiratory Disease, Sino-French Hoffmann Institute, School of Basic Medical Science, Guangzhou Medical University, Guangzhou, China
| | - Zhi-You Yang
- College of Food Science and Technology, Guangdong Provincial Key Laboratory of Aquatic Product Processing and Safety, Institute of Nutrition and Marine Drugs, Guangdong Ocean University, Zhanjiang, China
| | - Yue-Wei Ge
- School of Chinese Materia Medica, Guangdong Pharmaceutical University, Guangzhou, China.,Key Laboratory of Digital Quality Evaluation of Chinese Materia Medica of State Administration of TCM, Guangdong Pharmaceutical University, Guangzhou, China
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30
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Alternative Splicing and Its Roles in Plant Metabolism. Int J Mol Sci 2022; 23:ijms23137355. [PMID: 35806361 PMCID: PMC9266299 DOI: 10.3390/ijms23137355] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Revised: 06/27/2022] [Accepted: 06/28/2022] [Indexed: 01/02/2023] Open
Abstract
Plant metabolism, including primary metabolism such as tricarboxylic acid cycle, glycolysis, shikimate and amino acid pathways as well as specialized metabolism such as biosynthesis of phenolics, alkaloids and saponins, contributes to plant survival, growth, development and interactions with the environment. To this end, these metabolic processes are tightly and finely regulated transcriptionally, post-transcriptionally, translationally and post-translationally in response to different growth and developmental stages as well as the constantly changing environment. In this review, we summarize and describe the current knowledge of the regulation of plant metabolism by alternative splicing, a post-transcriptional regulatory mechanism that generates multiple protein isoforms from a single gene by using alternative splice sites during splicing. Numerous genes in plant metabolism have been shown to be alternatively spliced under different developmental stages and stress conditions. In particular, alternative splicing serves as a regulatory mechanism to fine-tune plant metabolism by altering biochemical activities, interaction and subcellular localization of proteins encoded by splice isoforms of various genes.
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Flavonoid Derivatives as Potential Cholinesterase Inhibitors in Scopolamine-Induced Amnesic Mice: An In Vitro, In Vivo and Integrated Computational Approach. Brain Sci 2022; 12:brainsci12060731. [PMID: 35741617 PMCID: PMC9221371 DOI: 10.3390/brainsci12060731] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Revised: 05/28/2022] [Accepted: 05/31/2022] [Indexed: 02/05/2023] Open
Abstract
Flavonoids are one of the most exciting types of phenolic compounds with a wide range of bioactive benefits. A series of flavone derivatives (F1–F5) were previously synthesized from substituted O-hydroxy acetophenone and substituted chloro-benzaldehydes. The titled compounds F1–F5 in the present study were evaluated for their anticholinesterase potential (against AChE and BuChE). The obtained results were then validated through a molecular docking approach. Compound F5 was found to be the most potent inhibitor of AChE (IC50 = 98.42 ± 0.97 µg/mL) followed by compound F4, whereas compound F2 was found to be the most promising inhibitor of BuChE (IC50 = 105.20 ± 1.43 µg/mL) among the tested compounds. The molecular docking analysis revealed a similar trend in the binding affinity of compounds with the targeted enzymes and found them to be capable of forming highly stable complexes with both receptors. The selected compounds were further subjected to in vivo assessment of cognitive function in a scopolamine-induced amnesic animal model, in which almost all compounds F1–F5 significantly attenuated the amnesic effects as evaluated through Y-Maze Paradigm and novel object discrimination (NOD) tasks, findings that were further supported by ex vivo experimental results. Among (F1–F5), F5 showed significant anti-amnesic effects in scopolamine-induced amnesic models and ameliorated the memory loss in behavioral model studies as compared to counterparts. In ex vivo study, noteworthy protection from oxidative stress in the brains of scopolamine-induced amnesic mice was also recorded for F5. These findings also confirmed that there were no significant differences among the in vivo and ex vivo results after administration of F1–F5 (7.5 or 15 mg/kg) or donepezil (2 mg/kg). These synthesized flavonoids could serve as potential candidates for new neuroprotective and nootropic drugs. However, further studies are needed to validate their observed potential in other animal models as well.
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Mitochondrial Damage in Myocardial Ischemia/Reperfusion Injury and Application of Natural Plant Products. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:8726564. [PMID: 35615579 PMCID: PMC9126658 DOI: 10.1155/2022/8726564] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Revised: 04/06/2022] [Accepted: 04/29/2022] [Indexed: 12/28/2022]
Abstract
Ischemic heart disease (IHD) is currently one of the leading causes of death among cardiovascular diseases worldwide. In addition, blood reflow and reperfusion paradoxically also lead to further death of cardiomyocytes and increase the infarct size. Multiple evidences indicated that mitochondrial function and structural disorders were the basic driving force of IHD. We summed up the latest evidence of the basic associations and underlying mechanisms of mitochondrial damage in the event of ischemia/reperfusion (I/R) injury. This review then reviewed natural plant products (NPPs) which have been demonstrated to mitochondria-targeted therapeutic effects during I/R injury and the potential pathways involved. We realized that NPPs mainly maintained the integrality of mitochondria membrane and ameliorated dysfunction, such as improving abnormal mitochondrial calcium handling and inhibiting oxidative stress, so as to protect cardiomyocytes during I/R injury. This information will improve our knowledge of mitochondrial biology and I/R-induced injury's pathogenesis and exhibit that NPPs hold promise for translation into potential therapies that target mitochondria.
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Bhat BA, Almilaibary A, Mir RA, Aljarallah BM, Mir WR, Ahmad F, Mir MA. Natural Therapeutics in Aid of Treating Alzheimer's Disease: A Green Gateway Toward Ending Quest for Treating Neurological Disorders. Front Neurosci 2022; 16:884345. [PMID: 35651632 PMCID: PMC9149276 DOI: 10.3389/fnins.2022.884345] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2022] [Accepted: 03/18/2022] [Indexed: 11/13/2022] Open
Abstract
The current scientific community is facing a daunting challenge to unravel reliable natural compounds with realistic potential to treat neurological disorders such as Alzheimer's disease (AD). The reported compounds/drugs mostly synthetic deemed the reliability and therapeutic potential largely due to their complexity and off-target issues. The natural products from nutraceutical compounds emerge as viable preventive therapeutics to fill the huge gap in treating neurological disorders. Considering that Alzheimer's disease is a multifactorial disease, natural compounds offer the advantage of a multitarget approach, tagging different molecular sites in the human brain, as compared with the single-target activity of most of the drugs so far used to treat Alzheimer's disease. A wide range of plant extracts and phytochemicals reported to possess the therapeutic potential to Alzheimer's disease includes curcumin, resveratrol, epigallocatechin-3-gallate, morin, delphinidins, quercetin, luteolin, oleocanthal, and other phytochemicals such as huperzine A, limonoids, and azaphilones. Reported targets of these natural compounds include inhibition of acetylcholinesterase, amyloid senile plaques, oxidation products, inflammatory pathways, specific brain receptors, etc. We tenaciously aimed to review the in-depth potential of natural products and their therapeutic applications against Alzheimer's disease, with a special focus on a diversity of medicinal plants and phytocompounds and their mechanism of action against Alzheimer's disease pathologies. We strongly believe that the medicinal plants and phytoconstituents alone or in combination with other compounds would be effective treatments against Alzheimer's disease with lesser side effects as compared to currently available treatments.
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Affiliation(s)
- Basharat Ahmad Bhat
- Department of Bioresources, School of Biological Sciences, University of Kashmir, Srinagar, India
| | - Abdullah Almilaibary
- Department of Family and Community Medicine, Faculty of Medicine, Albaha University Alaqiq, Alaqiq, Saudi Arabia
| | - Rakeeb Ahmad Mir
- Department of Biotechnology, Baba Ghulam Shah Badshah University, Rajouri, India
| | - Badr M. Aljarallah
- Department of Gastroenterology and Hepatology, Qassim University, Buraydah, Saudi Arabia
| | - Wajahat R. Mir
- Department of Bioresources, School of Biological Sciences, University of Kashmir, Srinagar, India
| | - Fuzail Ahmad
- College of Applied Medical Science, Majmaah University, Al Majma’ah, Saudi Arabia
| | - Manzoor Ahmad Mir
- Department of Bioresources, School of Biological Sciences, University of Kashmir, Srinagar, India
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Mateen RM, Tariq A, Afzal MS, Ali M, Tipu I, Hussain M, Saleem M, Naveed M. TULP3 NLS inhibition: an in silico study to hamper cargo transport to nucleus. J Biomol Struct Dyn 2022:1-9. [PMID: 35510584 DOI: 10.1080/07391102.2022.2070283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
TULP3 is involved in cell regulation pathways including transcription and signal transduction. In some pathological states like in cancers, increased level of TULP3 has been observed so it can serve as a potential target to hamper the activation of those pathways. We propose a novel idea of inhibiting nuclear localization signal (NLS) to interrupt nuclear translocation of TULP3 so that the downstream activations of pathways are blocked. In current in silico study, 3D structure of TULP3 was modeled using 8 different tools including I-TASSER, CABS-FOLD, Phyre2, PSIPRED, RaptorX, Robetta, Rosetta and Prime by Schrödinger. Best structure was selected after quality evaluation by SAVES and implied for the investigation of NLS sequence. Mapped NLS sequence was further used to dock with natural ligand importin-α as control docking to validate the NLS sequence as binding site. After docking and molecular dynamics (MD) simulation validation, these residues were used as binding side for subsequent docking studies. 70 alkaloids were selected after intensive literature survey and were virtually docked with NLS sequence where natural ligand importin-α is supposed to be bound. This study demonstrates the virtual inhibition of NLS sequence so that it paves a way for future in-vivo studies to use NLS as a new drug target for cancer therapeutics.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Rana Muhammad Mateen
- Department of Life sciences, School of Science, University of Management and Technology, Lahore, Pakistan
| | - Asma Tariq
- School of Biochemistry & Biotechnology, University of the Punjab, Lahore, Pakistan
| | - Muhammad Sohail Afzal
- Department of Life sciences, School of Science, University of Management and Technology, Lahore, Pakistan
| | - Muhammad Ali
- Department of Life sciences, School of Science, University of Management and Technology, Lahore, Pakistan
| | - Imran Tipu
- Department of Life sciences, School of Science, University of Management and Technology, Lahore, Pakistan
| | - Mureed Hussain
- Department of Life sciences, School of Science, University of Management and Technology, Lahore, Pakistan
| | - Mahjabeen Saleem
- School of Biochemistry & Biotechnology, University of the Punjab, Lahore, Pakistan
| | - Muhammad Naveed
- Department of Life Sciences, University of Central Punjab, Lahore, Pakistan
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Mohammadipour A. A focus on natural products for preventing and cure of mitochondrial dysfunction in Parkinson's disease. Metab Brain Dis 2022; 37:889-900. [PMID: 35156154 DOI: 10.1007/s11011-022-00931-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Accepted: 02/09/2022] [Indexed: 10/19/2022]
Abstract
Mitochondria are considered the only source of energy production within cells. This organelle is vital for neural function and survival by producing energy (adenosine triphosphate (ATP)) and regulating intracellular calcium. Mitochondrial dysfunction, which significantly contributes to both idiopathic and familial types of Parkinson's disease (PD), depletes cellular energy, disrupts homeostasis, and induces oxidative stress, leading to cell death. In recent years several natural products have been discovered to be protective against mitochondrial dysfunction. This review discusses the role of mitochondria in the progression of PD to define the path for using natural products to prevent and/or cure PD.
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Affiliation(s)
- Abbas Mohammadipour
- Department of Anatomy and Cell Biology, Faculty of Medicine, Mashhad University of Medical Sciences, PO Box 91779-48564, Azadi Sq, Vakilabad Blvd, Mashhad, Iran.
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Potential Therapeutic Applications of Plant-Derived Alkaloids against Inflammatory and Neurodegenerative Diseases. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2022; 2022:7299778. [PMID: 35310033 PMCID: PMC8926539 DOI: 10.1155/2022/7299778] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Revised: 01/31/2022] [Accepted: 02/11/2022] [Indexed: 12/14/2022]
Abstract
Alkaloids are a type of natural compound possessing different pharmacological activities. Natural products, including alkaloids, which originate from plants, have emerged as potential protective agents against neurodegenerative disorders (NDDs) and chronic inflammations. A wide array of prescription drugs are used against these conditions, however, not free of limitations of potency, side effects, and intolerability. In the context of personalized medicine, further research on alkaloids to unravel novel therapeutic approaches in reducing complications is critical. In this review, a systematic survey was executed to collect the literature on alkaloids and their health complications, from which we found that majority of alkaloids exhibit anti-inflammatory action via nuclear factor-κB and cyclooxygenase-2 (COX-2), and neuroprotective interaction through acetylcholinesterase (AChE), COX, and β-site amyloid precursor protein activity. In silico ADMET and ProTox-II-related descriptors were calculated to predict the pharmacological properties of 280 alkaloids isolated from traditional medicinal plants towards drug development. Out of which, eight alkaloids such as tetrahydropalmatine, berberine, tetrandrine, aloperine, sinomenine, oxymatrine, harmine, and galantamine are found to be optimal within the categorical range when compared to nicotine. These alkaloids could be exploited as starting materials for novel drug synthesis or, to a lesser extent, manage inflammation and neurodegenerative-related complications.
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Bashir DJ, Manzoor S, Khan IA, Bashir M, Agarwal NB, Rastogi S, Arora I, Samim M. Nanonization of Magnoflorine-Encapsulated Novel Chitosan-Collagen Nanocapsules for Neurodegenerative Diseases: In Vitro Evaluation. ACS OMEGA 2022; 7:6472-6480. [PMID: 35252643 PMCID: PMC8892656 DOI: 10.1021/acsomega.1c04459] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Accepted: 02/07/2022] [Indexed: 06/14/2023]
Abstract
Neurodegeneration is one of the most common diseases in the aged population, characterized by the loss in the function of neuronal cells and their ultimate death. One of the common features in the progression of this type of diseases is the oxidative stress. Drugs which are currently being used have been found to show lateral side effects, which is partly due to their inefficiency to cross blood-brain barrier. Nanoencapsulation of bioactive compounds is a profound approach in this direction and has become a method of choice nowadays. This study involved the evaluation of the anti-oxidative properties of magnoflorine (MF), which is an aporphine quaternary alkaloid, and synthesis of MF-loaded chitosan-collagen nanocapsules (MF-CCNc) for its better efficacy as a potent anti-oxidant. Physiochemical characterization of the synthesized nanocapsules was done by using dynamic light scattering and transmission electron microscopy. It revealed that the synthesized nanocapsules are of small size range, as small as 12 ± 2 nm, and are more or less of spherical shape. Sustained release was shown by MF in the in vitro drug release studies. Both MF and MF-CCNc were found to have good anti-oxidant potential with IC50 < 25 μg/mL. No major cytotoxicity was shown by the synthesized nanocapsules on SH-SY5Y cells. In silico anti-acetylcholinesterase (AChE) studies were also done, and they revealed that MF can be a potent inhibitor of AChE.
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Affiliation(s)
- Dar Junaid Bashir
- Department
of Chemistry, School of Chemical and Life Sciences, Jamia Hamdard, New Delhi 110062, India
| | - Saliha Manzoor
- Department
of Chemistry, School of Chemical and Life Sciences, Jamia Hamdard, New Delhi 110062, India
| | - Imran A. Khan
- Department
of Chemistry, School of Chemical and Life Sciences, Jamia Hamdard, New Delhi 110062, India
| | - Masarat Bashir
- COTS,
Mirgund, SKUAST Kashmir, Shalimar, Srinagar, Jammu and Kashmir 193121, India
| | - Nidhi Bharal Agarwal
- Centre
for Translational and Clinical Research, Jamia Hamdrad, New Delhi 110062, India
| | - Shweta Rastogi
- Department
of Chemistry, Hansraj College, Delhi University, Delhi 110007, India
| | - Indu Arora
- Department
of Biomedical Sciences, Shaheed Rajguru College of Applied Sciences
for Women, Delhi University, New Delhi 110096, India
| | - Mohammed Samim
- Department
of Chemistry, School of Chemical and Life Sciences, Jamia Hamdard, New Delhi 110062, India
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Plazas E, Avila M MC, Muñoz DR, Cuca S LE. Natural isoquinoline alkaloids: Pharmacological features and multi-target potential for complex diseases. Pharmacol Res 2022; 177:106126. [DOI: 10.1016/j.phrs.2022.106126] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Revised: 01/28/2022] [Accepted: 02/08/2022] [Indexed: 12/13/2022]
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Živančević K, Baralić K, Bozic D, Miljaković EA, Djordjević AB, Ćurčić M, Bulat Z, Antonijević B, Bulat P, Đukić-Ćosić D. Involvement of environmentally relevant toxic metal mixture in Alzheimer's disease pathway alteration and protective role of berberine: Bioinformatics analysis and toxicogenomic screening. Food Chem Toxicol 2022; 161:112839. [DOI: 10.1016/j.fct.2022.112839] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 12/22/2021] [Accepted: 01/22/2022] [Indexed: 02/07/2023]
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Erythrina variegata L. bark: an untapped bioactive source harbouring therapeutic properties for the treatment of Alzheimer's disease. In Silico Pharmacol 2021; 9:51. [PMID: 34532215 DOI: 10.1007/s40203-021-00110-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2021] [Accepted: 08/18/2021] [Indexed: 10/20/2022] Open
Abstract
A critical approach for target identification to detect the significant molecular mechanism of lead molecules via computational methods combined with in vitro procedures defines the modern strategy to combat untreatable diseases. Hence, the present investigation dealt to determine the effect of Erythrina variegata L. bark extract/fraction(s) over acetylcholinesterase (AChE) and butyrylcholinesterase (BChE) inhibitory activity followed by target identification and docking analysis of prime phytoconstituents. The in vitro AChE and BChE enzyme inhibitory assay were performed. Phytoconstituents from E. variegata were screened for carcinogenicity and mutagenicity and predicted for their possible targets leading to the identification of two known targets, i.e. AChE and BChE. The alkaloids with non-carcinogenic and non-mutagenic properties were studied for their main moiety responsible for the inhibitory activity. The protein models were checked in ERRAT for their quality and the homology model was created using Modeller9.10v to fill missing amino acid residues. The docking study predicted the binding affinity of bioactive molecules with identified targets using AutoDock 4.2. Molecular dynamics (MD) simulations for top hits were performed by Schrodinger Desmond 6.1v software. Chloroform fraction showed potent inhibition of AChE and BChE with IC50 value of 38.03 ± 1.987 µg/mL and 20.67 ± 2.794 µg/mL, respectively. Among all the six major bioactive compounds, Erysotine and Erythraline scored the highest binding affinity with AChE and Erysodine with BChE. MD simulation for 20 ns production run demonstrated Erysotine and Erysodine stable interaction with Arg49 of AChE and Lys427 of BChE, respectively. The current data provide enough shreds of evidence supporting the utilization of indolo [7a,1-a] isoquinoline derivatives for the identification of a new drug molecule in the management of Alzheimer's disease. Supplementary Information The online version contains supplementary material available at 10.1007/s40203-021-00110-0.
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Teymuori M, Yegdaneh A, Rabbani M. Effects of Piper nigrum fruit and Cinnamum zeylanicum bark alcoholic extracts, alone and in combination, on scopolamine-induced memory impairment in mice. Res Pharm Sci 2021; 16:474-481. [PMID: 34522195 PMCID: PMC8407161 DOI: 10.4103/1735-5362.323914] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2020] [Revised: 01/13/2021] [Accepted: 07/25/2021] [Indexed: 11/24/2022] Open
Abstract
Background and purpose: Alzheimer’s disease is a progressive brain disorder that is thought to be triggered via disruption of cholinergic neurons and enhanced oxidative stress. Therefore, antioxidant phytochemicals with the ability to fortify cholinergic function should help in preventing the progress of the disease. This study aimed at evaluating the combinational effects of two popular herbs one with anticholinesterase activity namely Piper nigrum and the other with antioxidant capacity, Cinnamomum zeylanicum. Experimental approach: In this study, P. nigrum extract (PN) (50, 100 mg/kg, ip) and C. zeylanicum extract (CZ) (100, 200, 400 mg/kg, ip) and their combinations were administered for 8 days before the injection of scopolamine (1 mg/kg, ip). Mice were then tested for their memory using two behavioral models, namely the object recognition test and the passive avoidance task. Findings/Results: Administration of scopolamine significantly impaired memory performance in both memory paradigms. In the passive avoidance test (PAT) model, PN at doses up to 100 mg/kg and CZ at doses up to 400 mg/kg did not significantly alter the memory impairment induced by scopolamine. The combination of these two plant extracts did not change the PAT parameters. In the object recognition test (ORT) model, however, administration of 100 mg/kg CZ alone and a combination of PN (50 mg/kg) with CZ (400 mg/kg), significantly increased the recognition index (P < 0.05). Conclusion and implications: Two plant extracts when administered alone or in combinations affected the memory performance differently in two memory paradigms. In the PAT model, the extracts did not show any memory improvement, in ORT, however, some improvements were observed after plant extracts.
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Affiliation(s)
- Mohammad Teymuori
- Department of Pharmacology and Toxicology and Isfahan Pharmaceutical Sciences Research Center, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, I.R. Iran
| | - Afsaneh Yegdaneh
- Department of Pharmacognosy, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, I.R. Iran
| | - Mohammad Rabbani
- Department of Pharmacology and Toxicology and Isfahan Pharmaceutical Sciences Research Center, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, I.R. Iran
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Kroth H, Oden F, Molette J, Schieferstein H, Gabellieri E, Mueller A, Berndt M, Sreenivasachary N, Serra AM, Capotosti F, Schmitt-Willich H, Hickman D, Pfeifer A, Dinkelborg L, Stephens A. PI-2620 Lead Optimization Highlights the Importance of Off-Target Assays to Develop a PET Tracer for the Detection of Pathological Aggregated Tau in Alzheimer's Disease and Other Tauopathies. J Med Chem 2021; 64:12808-12830. [PMID: 34455780 DOI: 10.1021/acs.jmedchem.1c00861] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
The first candidate PI-2014 was tested in healthy controls and subjects with Alzheimer's disease (AD). As PI-2014 displayed off-target binding to monoamine oxidase A (MAO-A), a new lead with improved binding to Tau and decreased MAO-A binding was required. For compound optimization, Tau binding assays based on both human AD brain homogenate and Tau-paired helical filaments were employed. Furthermore, two MAO-A screening assays based on (1) human-recombinant MAO-A and (2) displacement of 2-fluoro-ethyl-harmine from mouse brain homogenate were employed. Removing the N-methyl group from the tricyclic core resulted in compounds displaying improved Tau binding. For the final round of optimization, the cyclic amine substituents were replaced by pyridine derivatives. PI-2620 (2-(2-fluoropyridin-4-yl)-9H-pyrrolo[2,3-b:4,5-c']dipyridine) emerged as a best candidate displaying high Tau binding, low MAO-A binding, high brain uptake, and fast and complete brain washout. Furthermore, PI-2620 showed Tau binding on brain sections from corticobasal degeneration, progressive supranuclear palsy, and Pick's disease.
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Affiliation(s)
- Heiko Kroth
- AC Immune SA, EPFL Innovation Park, Building B, 1015 Lausanne, Switzerland
| | - Felix Oden
- Life Molecular Imaging GmbH, Tegeler Strasse 6-7, 13353 Berlin, Germany
| | - Jerome Molette
- AC Immune SA, EPFL Innovation Park, Building B, 1015 Lausanne, Switzerland
| | | | | | - Andre Mueller
- Life Molecular Imaging GmbH, Tegeler Strasse 6-7, 13353 Berlin, Germany
| | - Mathias Berndt
- Life Molecular Imaging GmbH, Tegeler Strasse 6-7, 13353 Berlin, Germany
| | | | | | | | | | - David Hickman
- AC Immune SA, EPFL Innovation Park, Building B, 1015 Lausanne, Switzerland
| | - Andrea Pfeifer
- AC Immune SA, EPFL Innovation Park, Building B, 1015 Lausanne, Switzerland
| | - Ludger Dinkelborg
- Life Molecular Imaging GmbH, Tegeler Strasse 6-7, 13353 Berlin, Germany
| | - Andrew Stephens
- Life Molecular Imaging GmbH, Tegeler Strasse 6-7, 13353 Berlin, Germany
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Liu H, Zhong H, Liu H, Yao X. Molecular dynamics simulations reveal the disruption mechanism of a 2,4-thiazolidinedione derivative C30 against tau hexapeptide (PHF6) oligomer. Proteins 2021; 90:142-154. [PMID: 34331342 DOI: 10.1002/prot.26196] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Revised: 07/17/2021] [Accepted: 07/23/2021] [Indexed: 11/08/2022]
Abstract
Derivatives of 2,4-thiazolidinedione have been reported to inhibit the aggregation of tau protein, in which compound 30 (C30) not only inhibit 80% of paired helical filament 6 (PHF6) aggregation, but also inhibit K18 and full-length tau aggregation. However, its inhibitory mechanism is unclear. In this study, to investigate the effect of C30 on tau protein, all-atom molecular dynamics simulation was performed on the PHF6 oligomer with and without C30. The results show that C30 can cause significant conformational changes in the PHF6 oligomer. The nematic order parameter P2 and secondary structure analyses show that C30 destroys the ordered structure of PHF6 oligomer, reduces the content of β-sheet structure, and transforms β-sheet into random coil structure. By clustering analysis, it was found that C30 has four possible binding sites on the PFH6 oligomer, and the binding ability order is S1 > S2 > S4 > S3. Following a more in-depth analyses of each site, it was determined that the S1 site is the most possible binding site mainly located between layers of L1 and L3. The hydrophobic interaction is the driving force for the binding of C30 to PHF6 oligomer. In addition, L1P4_Y310, L1P5_Y310, L3P1_V309, and L3P2_V309 are key residues for C30 binding to oligomer. Moreover, π-π interaction formed by L1P4_Y310 and L1P5_Y310 with C30 and the hydrogen bonding interaction formed by C30 with L3P3_Q307 are beneficial to the combination of C30 and oligomer. The fully understanding disrupt the mechanism of 2,4-thiazolidinedione derivative on PHF6 oligomer and the identification of binding sites will help design and discover new AD inhibitors in the future.
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Affiliation(s)
- Hongli Liu
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, Xuzhou, Jiangsu, China.,School of Pharmacy, Lanzhou University, Lanzhou, China
| | - Haiyang Zhong
- State Key Laboratory of Applied Organic Chemistry and Department of Chemistry, Lanzhou University, Lanzhou, China
| | - Huanxiang Liu
- School of Pharmacy, Lanzhou University, Lanzhou, China
| | - Xiaojun Yao
- State Key Laboratory of Applied Organic Chemistry and Department of Chemistry, Lanzhou University, Lanzhou, China.,State Key Laboratory of Quality Research in Chinese Medicine, Macau Institute for Applied Research in Medicine and Health, Macau University of Science and Technology, Taipa, Macau, China
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44
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Geetha RG, Ramachandran S. Recent Advances in the Anti-Inflammatory Activity of Plant-Derived Alkaloid Rhynchophylline in Neurological and Cardiovascular Diseases. Pharmaceutics 2021; 13:pharmaceutics13081170. [PMID: 34452133 PMCID: PMC8400357 DOI: 10.3390/pharmaceutics13081170] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Revised: 07/21/2021] [Accepted: 07/22/2021] [Indexed: 02/07/2023] Open
Abstract
Rhynchophylline (Rhy) is a plant-derived indole alkaloid isolated from Uncaria species. Both the plant and the alkaloid possess numerous protective properties such as anti-inflammatory, neuroprotective, anti-hypertensive, anti-rhythmic, and sedative effects. Several studies support the significance of the anti-inflammatory activity of the plant as an underlying mechanism for most of the pharmacological activities of the alkaloid. Rhy is effective in protecting both the central nervous system and cardiovascular system. Cerebro-cardiovascular disease primarily occurs due to changes in lifestyle habits. Many previous studies have highlighted the significance of Rhy in modulating calcium channels and potassium channels, thereby protecting the brain from neurodegenerative diseases and related effects. Rhy also has anticoagulation and anti-platelet aggregation activity. Although Rhy has displayed its role in protecting the cardiovascular system, very little is explored about its intervention in early atherosclerosis. Extensive studies are required to understand the cardioprotective effects of Rhye. This review summarized and discussed the various pharmacological effects of Rhy in neuro- and cardioprotection and in particular the relevance of Rhy in preventing early atherosclerosis using Rhy-loaded nanoparticles.
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Kim Y, Cho SH. Lindera glauca Blume ameliorates amyloid-β 1-42-induced memory impairment in mice with neuroprotection and activation of the CREB-BDNF pathway. Neurochem Int 2021; 147:105071. [PMID: 34000331 DOI: 10.1016/j.neuint.2021.105071] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 05/10/2021] [Accepted: 05/11/2021] [Indexed: 10/21/2022]
Abstract
BACKGROUND Alzheimer's disease (AD) is a neurodegenerative disorder presenting cognitive decline accompanied by deposits of amyloid-β (Aβ) and tau hyperphosphorylation. Without current treatment to AD, many studies suggested diverse approaches, one of which was herbal medicine and its active compounds. Very few studies have examined the effect of Lindera glauca Blume (L. glauca) in models of degenerative disease despite the attention that it received as a novel potential treatment source. We examined the efficacy of L. glauca in a mouse model of AD, which was induced by intrahippocampal injection of Aβ1-42. METHODS Mice were intrahippocampally infused with Aβ1-42 and were orally administered ethanolic extract of L.glauca before and after infusion for 21 days. Y-maze test and Morris water maze was conducted to assess memory impairment. Immunohistochemistry and western blot analysis were performed to assess the effect of L. glauca administration on pathological changes in mice. RESULTS L. glauca exhibited beneficial effects in spatial and reference learning as shown in increased time spent in the target quadrant in Morris water maze and increased spontaneous alternation in Y-maze. At the same time, decline of Aβ burden and phosphorylated tau were observed in the hippocampus of L. glauca-treated mouse under intrahippocampal injection of Aβ1-42. The results corresponded with amelioration of the decreased neuronal marker, neuronal-specific nuclear protein (NeuN) and attenuation of the increased reactive astrocyte marker, glial fibrillary acidic protein (GFAP) levels in hippocampus. Additionally, 21-day treatment with L. glauca inhibited downregulation of phosphorylated cAMP response element-binding protein (p-CREB) and brain-derived neurotrophic factor (BDNF) levels. CONCLUSION L. glauca improves behavioral deficits induced by Aβ1-42 and inhibits both Aβ- and tau-related pathological changes, stimulating neuroprotection mediated by CREB activation. L. glauca can be suggested as a new candidate for treatment of AD.
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Affiliation(s)
- Yunna Kim
- College of Korean Medicine, Kyung Hee University, Seoul, Republic of Korea; Research Group of Neuroscience, East-West Medical Research Institute, WHO Collaborating Center, Kyung Hee University, Seoul, Republic of Korea; Department of Clinical Korean Medicine, Graduate School, Kyung Hee University, Seoul, Republic of Korea.
| | - Seung-Hun Cho
- College of Korean Medicine, Kyung Hee University, Seoul, Republic of Korea; Research Group of Neuroscience, East-West Medical Research Institute, WHO Collaborating Center, Kyung Hee University, Seoul, Republic of Korea; Department of Clinical Korean Medicine, Graduate School, Kyung Hee University, Seoul, Republic of Korea.
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Natural Alkaloid Compounds as Inhibitors for Alpha-Synuclein Seeded Fibril Formation and Toxicity. Molecules 2021; 26:molecules26123736. [PMID: 34205249 PMCID: PMC8234408 DOI: 10.3390/molecules26123736] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2021] [Revised: 06/12/2021] [Accepted: 06/15/2021] [Indexed: 01/26/2023] Open
Abstract
The accumulation and aggregation of α-synuclein (α-syn) is the main pathologic event in Parkinson’s disease (PD), dementia with Lewy bodies, and multiple system atrophy. α-Syn-seeded fibril formation and its induced toxicity occupy a major role in PD pathogenesis. Thus, assessing compounds that inhibit this seeding process is considered a key towards the therapeutics of synucleinopathies. Using biophysical and biochemical techniques and seeding-dependent cell viability assays, we screened a total of nine natural compounds of alkaloid origin extracted from Chinese medicinal herbs. Of these compounds, synephrine, trigonelline, cytisine, harmine, koumine, peimisine, and hupehenine exhibited in vitro inhibition of α-syn-seeded fibril formation. Furthermore, using cell viability assays, six of these compounds inhibited α-syn-seeding-dependent toxicity. These six potent inhibitors of amyloid fibril formation and toxicity caused by the seeding process represent a promising therapeutic strategy for the treatment of PD and other synucleinopathies.
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Yu CS, Wang Q, Bajsa-Hirschel J, Cantrell CL, Duke SO, Liu XH. Synthesis, Crystal Structure, Herbicidal Activity, and SAR Study of Novel N-(Arylmethoxy)-2-chloronicotinamides Derived from Nicotinic Acid. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:6423-6430. [PMID: 34085526 DOI: 10.1021/acs.jafc.0c07538] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Nicotinic acid, also known as niacin, is a natural product, which is widely found in plants and animals. To discover novel natural-product-based herbicides, a series of N-(arylmethoxy)-2-chloronicotinamides were designed and synthesized. Some of the new N-(arylmethoxy)-2-chloronicotinamides exhibited excellent herbicidal activity against Agrostis stolonifera (bentgrass) at 100 μM. Compound 5f (2-chloro-N-((3,4-dichlorobenzyl)oxy)nicotinamide) possessed excellent herbicidal activity against Lemna paucicostata (duckweed), with an IC50 value of 7.8 μM, whereas the commercial herbicides clomazone and propanil had values of 125 and 2 μM, respectively. The structure-activity relationships reported in this paper could be used for the development of new herbicides against monocotyledonous weeds.
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Affiliation(s)
- Chen-Sheng Yu
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China
| | - Qiao Wang
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China
| | - Joanna Bajsa-Hirschel
- U.S. Department of Agriculture, Natural Products Utilization Research Unit, Agricultural Research Service, P.O. Box 1848, University, Mississippi 38677, United States
| | - Charles L Cantrell
- U.S. Department of Agriculture, Natural Products Utilization Research Unit, Agricultural Research Service, P.O. Box 1848, University, Mississippi 38677, United States
| | - Stephen O Duke
- National Center for Natural Product Research, School of Pharmacy, University of Mississippi, P.O. Box 1848, University, Mississippi 38677, United States
| | - Xing-Hai Liu
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China
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Kiris I, Basar MK, Sahin B, Gurel B, Coskun J, Mroczek T, Baykal AT. Evaluation of the Therapeutic Effect of Lycoramine on Alzheimer's Disease in Mouse Model. Curr Med Chem 2021; 28:3449-3473. [PMID: 33200692 DOI: 10.2174/0929867327999201116193126] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Revised: 08/31/2020] [Accepted: 09/04/2020] [Indexed: 11/22/2022]
Abstract
BACKGROUND Alzheimer's disease is one of the leading health problems characterized by the accumulation of Aβ and hyperphosphorylated tau that account for the senile plaque formations causing extensive cognitive decline. Many of the clinical diagnoses of Alzheimer's disease are made in the late stages, when the pathological changes have already progressed. OBJECTIVE The objective of this study is to evaluate the promising therapeutic effects of a natural compound, lycoramine, which has been shown to have therapeutic potential in several studies and to understand its mechanism of action on the molecular level via differential protein expression analyses. METHODS Lycoramine and galantamine, an FDA approved drug used in the treatment of mild to moderate AD, were administered to 12 month-old 5xFAD mice. Effects of the compounds were investigated by Morris water maze, immunohistochemistry and label- free differential protein expression analyses. RESULTS Here we demonstrated the reversal of cognitive decline via behavioral testing and the clearance of Aβ plaques. Proteomics analysis provided in-depth information on the statistically significant protein perturbations in the cortex, hippocampus and cerebellum sections to hypothesize the possible clearance mechanisms of the plaque formation and the molecular mechanism of the reversal of cognitive decline in a transgenic mouse model. Bioinformatics analyses showed altered molecular pathways that can be linked with the reversal of cognitive decline observed after lycoramine administration but not with galantamine. CONCLUSION Lycoramine shows therapeutic potential to halt and reverse cognitive decline at the late stages of disease progression, and holds great promise for the treatment of Alzheimer's disease.
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Affiliation(s)
- Irem Kiris
- Department of Medical Biochemistry, Faculty of Medicine, Acibadem Mehmet Ali Aydinlar University, Istanbul, Turkey
| | - Merve Karayel Basar
- Department of Medical Biochemistry, Faculty of Medicine, Acibadem Mehmet Ali Aydinlar University, Istanbul, Turkey
| | - Betul Sahin
- Acibadem Labmed Clinical Laboratories, R&D Center, Istanbul, Turkey
| | - Busra Gurel
- Department of Medical Biochemistry, Faculty of Medicine, Acibadem Mehmet Ali Aydinlar University, Istanbul, Turkey
| | - Julide Coskun
- Acibadem Labmed Clinical Laboratories, R&D Center, Istanbul, Turkey
| | - Tomasz Mroczek
- Department of Pharmacognosy, Medical University of Lublin, Lublin, Poland
| | - Ahmet Tarik Baykal
- Department of Medical Biochemistry, Faculty of Medicine, Acibadem Mehmet Ali Aydinlar University, Istanbul, Turkey
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Hügel HM, de Silva NH, Siddiqui A, Blanch E, Lingham A. Natural spirocyclic alkaloids and polyphenols as multi target dementia leads. Bioorg Med Chem 2021; 43:116270. [PMID: 34153839 DOI: 10.1016/j.bmc.2021.116270] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 05/25/2021] [Accepted: 06/04/2021] [Indexed: 01/03/2023]
Abstract
The U rhynchophylla, U tomentosa, Isatis indigotica Fortune, Voacanga Africana, herbal constituents, fungal extracts from Aspergillus duricaulis culture media, include spirooxindoles, polyphenols or bridged spirocyclic alkaloids. Their constituents exhibit specific and synergistic multiple neuroprotective properties including inhibiting of Aβ fibril induced cytotoxicity, NMDA receptor inhibition in mice models of Alzheimer's disease (AD). The pioneering research from Woodward to Waldmann has advanced the synthesis of spirocyclic alkaloids. Furthermore, the elucidation of the genetic analysis, biochemical pathways that links strictosidine to the alkaloids akuammicine, stemmadenine, tabersonine, catharanthine, will now enable the biotechnological generation, also stimulate synthesis of related bridged spirocyclic alkaloids for medicinal investigations. From the value of spirocyclic structures as multi target dementia leads, we hypothesise that simpler Lipinski-like natural/synthetic alkaloid analogues may likewise be discovered that provide neurocognitive enhancing activities against dementia and AD.
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Affiliation(s)
- Helmut M Hügel
- Applied Chemistry & Environmental Science, School of Science, RMIT University, GPO Box 2476, Melbourne, VIC 3001, Australia.
| | - Nilamuni H de Silva
- Applied Chemistry & Environmental Science, School of Science, RMIT University, GPO Box 2476, Melbourne, VIC 3001, Australia
| | - Aimen Siddiqui
- Applied Chemistry & Environmental Science, School of Science, RMIT University, GPO Box 2476, Melbourne, VIC 3001, Australia
| | - Ewan Blanch
- Applied Chemistry & Environmental Science, School of Science, RMIT University, GPO Box 2476, Melbourne, VIC 3001, Australia
| | - Anthony Lingham
- Applied Chemistry & Environmental Science, School of Science, RMIT University, GPO Box 2476, Melbourne, VIC 3001, Australia
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Sustained-Release Hydrogel-Based Rhynchophylline Delivery System Improved Injured Tendon Repair. Colloids Surf B Biointerfaces 2021; 205:111876. [PMID: 34087778 DOI: 10.1016/j.colsurfb.2021.111876] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Revised: 04/25/2021] [Accepted: 05/19/2021] [Indexed: 11/23/2022]
Abstract
During the injured flexor tendon healing process, tendon tissue is easy to form extremely dense adhesion with the surrounding tissue, which causes the serious influence of hand function recovery. Uncaria is widely used in clinic and its main composition, Rhynchophylline (Rhy), has been reported on its good therapeutic effect, which could effectively inhibit the intra-abdominal adhesion formation. However, the therapeutic effect of Rhy on tendon healing and adhesion formation is still unclear. Due to the short half-life of Rhy, hyaluronic acid (HA) sustained-release system for Rhy delivery was constructed and it could also avoid drug from the undesired loss during the transit. After Rhy delivery system was applied around the injured tendons, adhesion formation, gliding function and healing strength of tendons were evaluated. Our results showed that the gliding excursion and healing strength of repaired tendons were both significantly increased, as well as the adhesion was inhibited. From in vivo experiments, Rhy could be able to increase the expression of Col Ⅰ/Col Ⅲ and helped fibroblasts to ordered organization for tendon tissues. But for adhesion tissues, Rhy promoted the apoptosis and accelerated the degradation of extracellular matrix. In vitro study showed Rhy could help tenocytes stimulated with TGF-β1 to recover to normal cell functions involving cell proliferation and apoptosis level. Through high-throughput sequencing, we found that Rhy was involved in the regulation of Extracellular Matrix (ECM) signaling pathway. We draw a conclusion that Rhy enhanced the tendon healing and prevented adhesion formation through inhibiting the phosphorylation of Smad2. In a word, this sustained release system of Rhy may be a promising strategy for the treatment of injured tendons.
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