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Boonyarat C, Yenjai C, Monthakantirat O, Kaewamatawong R, Poonsawas P, Wangboonskul J, Chaiwiwatrakul S, Waiwut P. Multifunctionality of Clausena harmandiana Extract and Its Active Constituents against Alzheimer's Disease. Curr Issues Mol Biol 2022; 44:3681-3694. [PMID: 36005148 PMCID: PMC9406758 DOI: 10.3390/cimb44080252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Revised: 08/11/2022] [Accepted: 08/13/2022] [Indexed: 11/16/2022] Open
Abstract
This study was designed to investigate the effects of the root-bark extract of Clausena harmandiana (CH) and its active constituents (nordentatin and 7-methoxyheptaphylline) on pharmacological activities regarding selected targets associated with AD, namely, its antioxidant activity, inhibition of Aβ aggregation, acetylcholinesterase (AChE) activity, and neuroprotective effects. The effect of the CH extract on the cognitive impairment induced by scopolamine was also evaluated in mice. The effects of the CH extract and its active constituents on radical scavenging, Aβ aggregation, and AChE activity were investigated with a 2,2′-azino-bis(3-ethylbenzthiazoline-6-sulfonic acid (ABTS) assay, a thioflavin-T assay, and Ellman’s method. The neuroprotective effects of the extract against hydrogen-peroxide and Aβ toxicity were evaluated with a 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide (MTT) assay. In addition, the effects on cognitive impairment induced by scopolamine in mice were evaluated using Morris-water-maze and modified-Y-maze test models. The results of the present study demonstrate that the root-bark extract of CH shows multimodal actions relevant to the AD pathological cascade, including antioxidant effects, the inhibition of Aβ aggregation, the inhibition of AChE function, and neuroprotection against oxidative stress and Aβ toxicity. The extracts could improve both the short- and long-term memory deficits induced by scopolamine in mice.
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Affiliation(s)
- Chantana Boonyarat
- Faculty of Pharmaceutical Sciences, Khon Kaen University, Khon Kaen 40002, Thailand
- Center for Research and Development of Herbal Health Products, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Chavi Yenjai
- Natural Products Research Unit, Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Khon Kaen University, Khon Kaen 40002, Thailand
| | | | - Rawiwun Kaewamatawong
- Faculty of Pharmaceutical Sciences, Ubon Ratchathani University, Ubon Ratchathani 34190, Thailand
| | - Pattaporn Poonsawas
- Faculty of Pharmaceutical Sciences, Thummasart University, Bangkok 10330, Thailand
| | - Jinda Wangboonskul
- Faculty of Pharmaceutical Sciences, Thummasart University, Bangkok 10330, Thailand
| | - Suchada Chaiwiwatrakul
- Faculty of Humanity and Social Sciences, Ubon Ratchathani Rajabhat University, Ubon Ratchathani 34000, Thailand
| | - Pornthip Waiwut
- Faculty of Pharmaceutical Sciences, Ubon Ratchathani University, Ubon Ratchathani 34190, Thailand
- Correspondence: ; Tel.: +66-80-8955511; Fax: +66-45-353609
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Multitarget Activities of Kleeb Bua Daeng, a Thai Traditional Herbal Formula, Against Alzheimer's Disease. Pharmaceuticals (Basel) 2020; 13:ph13050079. [PMID: 32344916 PMCID: PMC7281753 DOI: 10.3390/ph13050079] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Revised: 04/21/2020] [Accepted: 04/23/2020] [Indexed: 12/20/2022] Open
Abstract
The Kleeb Bua Daeng formula (KBD) is a Thai traditional medicine for brain health promotion. On the basis of the activities of its individual components, the KBD could have good potential for the treatment of Alzheimer’s disease (AD). Herein, we investigated the KBD as an AD treatment. The ethanol extracts of KBD and its components, i.e., Nelumbo nucifera (NN), Piper nigrum fruits (BP), and the aerial part of Centella asiatica (CA) exhibited antioxidant activity, as determined by both ABTS and DPPH assays. The Ellman’s assay revealed that the KBD, NN, and BP showed an ability to inhibit acetylcholinesterase. The thioflavin T assay indicated that the KBD, NN, BP, and CA inhibited beta-amyloid aggregation. The neuroprotection and Western blot analysis revealed that the KBD reduced H2O2-induced neuronal cell death by inhibiting the expression of pro-apoptotic factors, i.e., cleaved caspase-9 and -3, p-P65, p-JNK, and p-GSK-3β, as well as by inducing expression of anti-apoptotic factors, i.e., MCl1, BClxl, and survivin. Furthermore, the KBD could improve scopolamine induced memory deficit in mice. Our results illustrate that the KBD with multimode action has the potential to be employed in AD treatment. Thus, the KBD could be used as an alternative novel choice for the prevention and treatment of patients with AD.
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Schaduangrat N, Prachayasittikul V, Choomwattana S, Wongchitrat P, Phopin K, Suwanjang W, Malik AA, Vincent B, Nantasenamat C. Multidisciplinary approaches for targeting the secretase protein family as a therapeutic route for Alzheimer's disease. Med Res Rev 2019; 39:1730-1778. [PMID: 30628099 DOI: 10.1002/med.21563] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2018] [Revised: 11/21/2018] [Accepted: 12/24/2018] [Indexed: 12/27/2022]
Abstract
The continual increase of the aging population worldwide renders Alzheimer's disease (AD) a global prime concern. Several attempts have been focused on understanding the intricate complexity of the disease's development along with the on- andgoing search for novel therapeutic strategies. Incapability of existing AD drugs to effectively modulate the pathogenesis or to delay the progression of the disease leads to a shift in the paradigm of AD drug discovery. Efforts aimed at identifying AD drugs have mostly focused on the development of disease-modifying agents in which effects are believed to be long lasting. Of particular note, the secretase enzymes, a group of proteases responsible for the metabolism of the β-amyloid precursor protein (βAPP) and β-amyloid (Aβ) peptides production, have been underlined for their promising therapeutic potential. This review article attempts to comprehensively cover aspects related to the identification and use of drugs targeting the secretase enzymes. Particularly, the roles of secretases in the pathogenesis of AD and their therapeutic modulation are provided herein. Moreover, an overview of the drug development process and the contribution of computational (in silico) approaches for facilitating successful drug discovery are also highlighted along with examples of relevant computational works. Promising chemical scaffolds, inhibitors, and modulators against each class of secretases are also summarized herein. Additionally, multitarget secretase modulators are also taken into consideration in light of the current growing interest in the polypharmacology of complex diseases. Finally, challenging issues and future outlook relevant to the discovery of drugs targeting secretases are also discussed.
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Affiliation(s)
- Nalini Schaduangrat
- Faculty of Medical Technology, Center of Data Mining and Biomedical Informatics, Mahidol University, Bangkok, Thailand
| | - Veda Prachayasittikul
- Faculty of Medical Technology, Center of Data Mining and Biomedical Informatics, Mahidol University, Bangkok, Thailand
| | - Saowapak Choomwattana
- Faculty of Medical Technology, Center of Data Mining and Biomedical Informatics, Mahidol University, Bangkok, Thailand
| | - Prapimpun Wongchitrat
- Faculty of Medical Technology, Center for Research and Innovation, Mahidol University, Bangkok, Thailand
| | - Kamonrat Phopin
- Faculty of Medical Technology, Center for Research and Innovation, Mahidol University, Bangkok, Thailand
| | - Wilasinee Suwanjang
- Faculty of Medical Technology, Center for Research and Innovation, Mahidol University, Bangkok, Thailand
| | - Aijaz Ahmad Malik
- Faculty of Medical Technology, Center of Data Mining and Biomedical Informatics, Mahidol University, Bangkok, Thailand
| | - Bruno Vincent
- Institute of Molecular Biosciences, Mahidol University, Nakhon Pathom, Thailand.,Centre National de la Recherche Scientifique, Paris, France
| | - Chanin Nantasenamat
- Faculty of Medical Technology, Center of Data Mining and Biomedical Informatics, Mahidol University, Bangkok, Thailand
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Kalász H, Ojha S, Tekes K, Szőke É, Mohanraj R, Fahim M, Adeghate E, Adem A. Pharmacognostical Sources of Popular Medicine To Treat Alzheimer's Disease. THE OPEN MEDICINAL CHEMISTRY JOURNAL 2018; 12:23-35. [PMID: 29515678 PMCID: PMC5827296 DOI: 10.2174/1874104501812010023] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 11/01/2017] [Revised: 01/21/2018] [Accepted: 01/29/2018] [Indexed: 11/22/2022]
Abstract
BACKGROUND A large number of classical and recently discovered plants are indicated in preventing and/or treating Alzheimer's disease (AD). OBJECTIVE Name of plants with their anti-AD effects are important for their further use and investigation. METHOD A short overview of AD is given; anti-Alzheimer plants are given in a Table. RESULTS Various medicinal plants are listed here as sources of popular medicines to be used in cases when patients are afraid of developing and/or suffer from AD. Some of these plants have been used for centuries. The major sources in the literature, over one hundred of references are given for plants that show beneficial effect on the progress of AD. CONCLUSION Plant extracts are widely used addition to the synthetic drugs approved by various administrative authorities to stop/slow down the progress of symptoms of AD.
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Affiliation(s)
- Huba Kalász
- Department of Pharmacology and Pharmacotherapy, Semmelweis University, Nagyvárad tér 4, Budapest, Hungary
| | - Shreesh Ojha
- Department of Pharmacology and Therapeutics, College of Medicine and Health Sciences, United Arab Emirates University, P.O.Box 17666, Al-Ain, United Arab Emirates
| | - Kornélia Tekes
- Department of Pharmacodynamics, Semmelweis University, 1089 Budapest, Nagyvárad tér 4, Hungary
| | - Éva Szőke
- Department of Pharmacognosy, Semmelweis University, 1085 Budapest, Üllői út 26, Hungary
| | - Rajesh Mohanraj
- Department of Pharmacology and Therapeutics, College of Medicine and Health Sciences, United Arab Emirates University, P.O.Box 17666, Al-Ain, United Arab Emirates
| | - Mohamed Fahim
- Department of Physiology, College of Medicine and Health Sciences, United Arab Emirates University
| | - Ernest Adeghate
- Department of Pharmacology and Pharmacotherapy, Semmelweis University, Nagyvárad tér 4, Budapest, Hungary
| | - Abdu Adem
- Department of Pharmacology and Therapeutics, College of Medicine and Health Sciences, United Arab Emirates University, P.O.Box 17666, Al-Ain, United Arab Emirates
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Nworu CS, Ejikeme TI, Ezike AC, Ndu O, Akunne TC, Onyeto CA, Okpalanduka P, Akah PA. Anti-plasmodial and anti-inflammatory activities of cyclotide-rich extract and fraction of Oldenlandia affinis (R. & S.) D.C. ( Rubiaceae). Afr Health Sci 2017; 17:827-843. [PMID: 29085411 PMCID: PMC5656185 DOI: 10.4314/ahs.v17i3.26] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
BACKGROUND Oldenlandia affinis, commonly called 'kalata-kalata', a versatile plant used locally to treat malaria fever in some parts of sub-Saharan Africa was investigated for anti-plasmodial and anti-inflammatory activities. OBJECTIVE The study was designed to evaluate the antiplasmodial as well as anti-inflammatory activities of whole extract and cyclotide-rich fraction of Oldenlandia affinis. METHOD The dichloromethane-methanol extract (ODE) of the plant, O. affinis was investigated for suppressive and curative antiplasmodial activities against Plasmodium berghei in mice. ODE and the cyclotide-rich fraction (CRF) was investigated for chronic and acute anti-inflammatory activities in rat models of inflammation. Inhibition of pro-inflammatory mediators was studied in RAW264.7 macrophages. RESULTS ODE exhibited significant (p<0.05) reduction in mean parasitaemia in both the suppressive and curative models of Plasmodium berghei infection in mice.Administration of ODE(100, 200, or 400 mg/kg) and CRF (100, 200, or 400 mg/kg) produced significant inhibition of rodent models of acute and chronic inflammation . This observation is supported by the significant (P<0.05) inhibition of pro-inflammatory mediators, inducible nitric oxide (iNO) and tumour necrosis factor-alpha (TNF-α), and the reactive radical scavenging activities in RAW264.7 macrophages. CONCLUSION These findings could explain, at least in part, the successes reported in the use of the herb, Oldenlandia affinis in the traditional treatment of malaria fever.
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Affiliation(s)
- Chukwuemeka Sylvester Nworu
- Department of Pharmacology & Toxicology, Faculty of Pharmaceutical Sciences, University of Nigeria, Nsukka, 410001, Enugu State, Nigeria
| | - Tochukwu Ifenyinwa Ejikeme
- Department of Pharmacology & Toxicology, Faculty of Pharmaceutical Sciences, University of Nigeria, Nsukka, 410001, Enugu State, Nigeria
| | - Adaobi Chioma Ezike
- Department of Pharmacology & Toxicology, Faculty of Pharmaceutical Sciences, University of Nigeria, Nsukka, 410001, Enugu State, Nigeria
| | - Okechukwu Ndu
- Department of Pharmacology & Toxicology, Faculty of Pharmaceutical Sciences, University of Nigeria, Nsukka, 410001, Enugu State, Nigeria
| | - Theophine Chinwuba Akunne
- Department of Pharmacology & Toxicology, Faculty of Pharmaceutical Sciences, University of Nigeria, Nsukka, 410001, Enugu State, Nigeria
| | - Collins Azubuike Onyeto
- Department of Pharmacology & Toxicology, Faculty of Pharmaceutical Sciences, University of Nigeria, Nsukka, 410001, Enugu State, Nigeria
| | - Paul Okpalanduka
- Department of Pharmacology & Toxicology, Faculty of Pharmaceutical Sciences, University of Nigeria, Nsukka, 410001, Enugu State, Nigeria
| | - Peter Achunike Akah
- Department of Pharmacology & Toxicology, Faculty of Pharmaceutical Sciences, University of Nigeria, Nsukka, 410001, Enugu State, Nigeria
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Haidara M, Bourdy G, De Tommasi N, Braca A, Traore K, Giani S, Sanogo R. Medicinal Plants Used in Mali for the Treatment of Malaria and Liver Diseases. Nat Prod Commun 2016. [DOI: 10.1177/1934578x1601100309] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Today, ethno-pharmacology is a very important resource in order to discover new therapies for the current diseases. Moreover, another good justification for the ethno-pharmacological approach is to obtain new, effective, less expensive and simple therapies, limiting at the same time the cost of pharmaceutical research. Two major anti-malarial drugs widely used today, i.e. quinine and artemisinin, came respectively from Peruvian and Chinese ancestral treatments reported in the traditional medicines. In this contest, there is an urgent need for the discovery of new drugs, due to the critical epidemiological situation of this disease and to the growth of resistances. In Mali, malaria and liver diseases remain one of the leading public health problems. Many medicinal plants are often used, in local traditional medicine, for the treatment at the same time of malaria and liver diseases, including hepatic syndromes, jaundice, hepatitis and other hepatic disorders. Moreover, in the local language Bamanan, the word “ Sumaya” is used both for malaria and some liver diseases. In addition, we noted that some of the improved traditional phytomedicines produced by the Department of Traditional Medicine are prescribed by modern doctors both for malaria and liver diseases. In this review, pharmacological, toxicological and phytochemical data on Argemone mexicana L. (Papaveraceae), Cochlospermum tinctorium Perr. ex A. Rich (Cochlospermaceae), Combretum micranthum G.Don (Combretaceae), Entada africana Guillet Perr. (Mimosaceae), Erythrina senegalensis A. DC (Fabaceae), Mitragyna inermis (Willd) Kuntze (Rubiaceae), Nauclea latifolia Smith syn. Sarcocephalus latifolius (Smith) Bruce (Rubiaceae), Securidaca longepedunculata Fresen (Polygalaceae), Trichilia emetica Vahl. (Meliaceae), and Vernonia colorata (Willd) Drake (Asteraceae) are reported. Some of the collected data could be used to improve the actual herbal drugs and to propose new phytomedicines for the management of malaria and liver diseases.
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Affiliation(s)
- Mahamane Haidara
- Faculté de Pharmacie, Université des Sciences des Techniques et des Technologies de Bamako (USTTB), Mali
| | - Geneviève Bourdy
- Laboratoire de Pharmacochimie et Pharmacologie pour le Développement (PharmaDev) de Toulouse, France
| | - Nunziatina De Tommasi
- Dipartimento di Farmacia, Università di Salerno, Via Giovanni Paolo II, 84084 Fisciano (SA), Italy
| | - Alessandra Braca
- Dipartimento di Farmacia, Università di Pisa, Via Bonanno 33, 56126 Pisa, Italy
| | | | | | - Rokia Sanogo
- Faculté de Pharmacie, Université des Sciences des Techniques et des Technologies de Bamako (USTTB), Mali
- Département Médecine Traditionnelle, Bamako, Mali
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Manoharan S, Essa MM, Vinoth A, Kowsalya R, Manimaran A, Selvasundaram R. Alzheimer's Disease and Medicinal Plants: An Overview. ADVANCES IN NEUROBIOLOGY 2016; 12:95-105. [PMID: 27651250 DOI: 10.1007/978-3-319-28383-8_6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/25/2023]
Abstract
Alzheimer's disease (AD) is progressive neurodegenerative disorder and identified as a major health concern globally. Individuals with AD and their care givers are affected in personal, emotional, financial, and social levels. Due to its significant impact and heavy burden on the individual, the patients' families, and society, it is highly needed to search for cost effective, long-time retention therapeutic targets. In recent decades, there are lots of research conducted the possible benefit of natural products and their active components on AD and other neurodegenerative disease, which are discussed here.
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Affiliation(s)
- S Manoharan
- Department of Biochemistry and Biotechnology, Annamalai University, Annamalai Nagar, Chidambaram, Tamil Nadu, India.
| | - M Mohamed Essa
- Department of Food Science and Nutrition, Sultan Qaboos University, Muscat, Oman
- Ageing and Dementia Research Group, Sultan Qaboos University, Muscat, Oman
| | - A Vinoth
- Department of Biochemistry and Biotechnology, Annamalai University, Annamalai Nagar, Chidambaram, Tamil Nadu, India
| | - R Kowsalya
- Department of Biochemistry and Biotechnology, Annamalai University, Annamalai Nagar, Chidambaram, Tamil Nadu, India
| | - A Manimaran
- Department of Biochemistry and Biotechnology, Annamalai University, Annamalai Nagar, Chidambaram, Tamil Nadu, India
| | - R Selvasundaram
- Department of Biochemistry and Biotechnology, Annamalai University, Annamalai Nagar, Chidambaram, Tamil Nadu, India
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Kumar NS, Nisha N. Phytomedicines as potential inhibitors of β amyloid aggregation: significance to Alzheimer's disease. Chin J Nat Med 2015; 12:801-18. [PMID: 25480511 DOI: 10.1016/s1875-5364(14)60122-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2013] [Indexed: 01/13/2023]
Abstract
Throughout the history of drug development, plants have been an important source for the discovery of novel therapeutically active compounds for many diseases. The ethnopharmacological approach has provided several leads to identify potential new drugs from plant sources, including those for memory disorders. For the treatment of Alzheimer's disease the drug discovery focus shifted from cholinesterase inhibitors, to other targets primarily based on two key neuropathological hallmarks, namely the hyperphosphorylation of the tau protein resulting in the formation of neurofibrillary tangles (NFTs), and the increased formation and aggregation of amyloid-beta peptide (Aβ) derived from amyloid precursor protein (APP). The present article aims to provide a comprehensive literature survey of plants and their constituents that have been tested for Aβ aggregation, thus possibly relieving several features of Alzheimer's disease (AD).
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Affiliation(s)
- N Satheesh Kumar
- Department of Pharmaceutical Analysis, National Institute of Pharmaceutical Education and Research [NIPER-H], Balanagar, Hyderabad-500037, India.
| | - N Nisha
- Department of Biochemistry, Aurigene Discovery Technologies, Hyderabad-500049, India
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Adewusi EA, Steenkamp V. Medicinal plants and their derivatives with amyloid beta inhibitory activity as potential targets for drug discovery. ASIAN PACIFIC JOURNAL OF TROPICAL DISEASE 2015. [DOI: 10.1016/s2222-1808(15)60810-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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Kim JM, Hwang KW, Joo HB, Park SY. Anti-Amyloidogenic Properties of D
ryopteris Crassirhizoma
Roots in Alzheimer's Disease Cellular Model. J Food Biochem 2015. [DOI: 10.1111/jfbc.12156] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
- Jae-Moon Kim
- World Class University; Department of Nanobiomedicine; Dankook University; Cheonan 330-714 Korea
| | - Kwang Woo Hwang
- Laboratory of Host Defense Modulation; College of Pharmacy; Chung-Ang University; Seoul 156-756 Korea
| | - Hwan-Bin Joo
- Laboratory of Pharmacognosy; College of Pharmacy; Dankook University; Cheonan 330-714 Korea
| | - So-Young Park
- World Class University; Department of Nanobiomedicine; Dankook University; Cheonan 330-714 Korea
- Laboratory of Pharmacognosy; College of Pharmacy; Dankook University; Cheonan 330-714 Korea
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Hage S, Stanga S, Marinangeli C, Octave JN, Dewachter I, Quetin-Leclercq J, Kienlen-Campard P. Characterization of Pterocarpus erinaceus kino extract and its gamma-secretase inhibitory properties. JOURNAL OF ETHNOPHARMACOLOGY 2015; 163:192-202. [PMID: 25639816 DOI: 10.1016/j.jep.2015.01.028] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2014] [Revised: 01/14/2015] [Accepted: 01/21/2015] [Indexed: 06/04/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The aqueous decoction of Pterocarpus erinaceus has been traditionally used in Benin against memory troubles. AIM OF THE STUDY New strategies are needed against Alzheimer׳s disease (AD), for, to date, AD treatment is symptomatic and consists in drugs treating the cognitive decline. An interesting target is the β-amyloid peptide (Aβ), whose accumulation and progressive deposition into amyloid plaques are key events in AD aetiology. Identifying new and more selective γ-secretase inhibitors or modulators (none of the existing has proven so far to be selective or fully efficient) appears in this respect of particular interest. We studied the activity and mechanisms of action of Pterocarpus erinaceus kino aqueous extract, after the removal of catechic tannins (KAST). METHODS AND RESULTS We tested KAST at non-toxic concentrations on cells expressing the human Amyloid Precursor Protein (APP695), as well as on primary neurons. Pterocarpus erinaceus extract was found to inhibit Aβ release in both models. We further showed that KAST inhibited γ-secretase activity in cell-free and in vitro assays, strongly suggesting that KAST is a natural γ-secretase inhibitor. Importantly, this extract did not inhibit the cleavage of Notch, another γ-secretase substrate responsible for major detrimental side effects observed with γ-secretase inhibitors. Epicatechin was further identified in KAST by HPLC-MS. CONCLUSION Pterocarpus erinaceus kino extract appears therefore as a new γ-secretase inhibitor selective towards APP processing.
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Affiliation(s)
- Salim Hage
- Université catholique de Louvain, B-1200 Brussels, Belgium; Louvain Drug Research Institute (LDRI), Université catholique de Louvain, Belgium
| | - Serena Stanga
- Université catholique de Louvain, B-1200 Brussels, Belgium; Institute of Neuroscience (IoNS), Université catholique de Louvain, Belgium
| | - Claudia Marinangeli
- Université catholique de Louvain, B-1200 Brussels, Belgium; Institute of Neuroscience (IoNS), Université catholique de Louvain, Belgium
| | - Jean-Noël Octave
- Université catholique de Louvain, B-1200 Brussels, Belgium; Institute of Neuroscience (IoNS), Université catholique de Louvain, Belgium
| | - Ilse Dewachter
- Université catholique de Louvain, B-1200 Brussels, Belgium; Institute of Neuroscience (IoNS), Université catholique de Louvain, Belgium
| | - Joëlle Quetin-Leclercq
- Université catholique de Louvain, B-1200 Brussels, Belgium; Louvain Drug Research Institute (LDRI), Université catholique de Louvain, Belgium
| | - Pascal Kienlen-Campard
- Université catholique de Louvain, B-1200 Brussels, Belgium; Institute of Neuroscience (IoNS), Université catholique de Louvain, Belgium.
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Semwal DK, Semwal RB, Vermaak I, Viljoen A. From arrow poison to herbal medicine--the ethnobotanical, phytochemical and pharmacological significance of Cissampelos (Menispermaceae). JOURNAL OF ETHNOPHARMACOLOGY 2014; 155:1011-1028. [PMID: 24997389 DOI: 10.1016/j.jep.2014.06.054] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2014] [Revised: 05/22/2014] [Accepted: 06/24/2014] [Indexed: 06/03/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Cissampelos species have a rich history of traditional use, being used for both therapeutic and toxic properties. It is traditionally applied therapeutically in a diverse range of conditions and diseases including asthma, cough, fever, arthritis, obesity, dysentery, snakebite, jaundice and heart, blood pressure and skin-related problems. Conversely, it was traditionally included in preparations of curare applied as arrow poison during hunting to cause death of animals by asphyxiation. This review unites the ethnobotanical knowledge on Cissampelos with the phytochemistry and pharmacological activity which has been explored thus far. In addition, it identifies knowledge gaps and suggests further research opportunities. METHODS The available electronic literature on the genus Cissampelos was collected using database searches including Scopus, Google Scholar, Pubmed, Web of Science, etc. The searches were limited to peer-reviewed English journals with the exception of books and a few articles in foreign languages which were included. RESULTS The literature revealed that pharmacological activity including analgesic and antipyretic, anti-inflammatory, anti-allergic, bronchodilator, immunomodulatory, memory-enhancing, antidepressant, neuroprotective, antimicrobial, antimalarial, antiparasitic, anti-ulcer, anticancer, anti-oxidant, cardiovascular, muscle-relaxant, hepatoprotective, antidiabetic, antidiarrhoeal, antifertility, and antivenom activity have been confirmed in vitro and/or in vivo for various Cissampelos species. Cissampelos pareira L. and Cissampelos sympodialis Eichl. are the most explored species of this genus and the smallest number of studies have been conducted on Cissampelos laxiflora Moldenke and Cissampelos tenuipes Engl. Many alkaloids isolated from Cissampelos such as warifteine, methylwarifteine, berberine, hayatin and hayatidin showed promising anti-allergic, immunosuppressive, antidepressant, anticancer, vasodilatory and muscle-relaxant activities. CONCLUSION The plants of this genus are used in traditional medicine for the treatment of various ailments. These plants are a rich source of bioactive bisbenzylisoquinoline and aporphine alkaloids together with other minor constituents. Although these plants are reputable and revered in various traditional medicine systems, many have not yet been screened chemically or pharmacologically and so there is a vast amount of research still to be conducted to validate their traditional use.
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Affiliation(s)
- Deepak Kumar Semwal
- Department of Pharmaceutical Sciences, Faculty of Science, Tshwane University of Technology, Private Bag X680, Pretoria 0001, South Africa
| | - Ruchi Badoni Semwal
- Department of Pharmaceutical Sciences, Faculty of Science, Tshwane University of Technology, Private Bag X680, Pretoria 0001, South Africa
| | - Ilze Vermaak
- Department of Pharmaceutical Sciences, Faculty of Science, Tshwane University of Technology, Private Bag X680, Pretoria 0001, South Africa
| | - Alvaro Viljoen
- Department of Pharmaceutical Sciences, Faculty of Science, Tshwane University of Technology, Private Bag X680, Pretoria 0001, South Africa.
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Hage S, Marinangeli C, Stanga S, Octave JN, Quetin-Leclercq J, Kienlen-Campard P. Gamma-Secretase Inhibitor Activity of aPterocarpus erinaceusExtract. NEURODEGENER DIS 2014; 14:39-51. [DOI: 10.1159/000355557] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2012] [Accepted: 09/10/2013] [Indexed: 11/19/2022] Open
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Liu LF, Durairajan SSK, Lu JH, Koo I, Li M. In vitro screening on amyloid precursor protein modulation of plants used in Ayurvedic and traditional Chinese medicine for memory improvement. JOURNAL OF ETHNOPHARMACOLOGY 2012; 141:754-760. [PMID: 21920424 DOI: 10.1016/j.jep.2011.08.065] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2011] [Revised: 08/27/2011] [Accepted: 08/29/2011] [Indexed: 05/31/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The 15 herbs for the screening have been traditionally used in Ayurvedic medicine or in Traditional Chinese medicine (TCM) for the treatment of cognitive disorders clinically. AIM OF THE STUDY Fifteen plant species were investigated for the inhibition of amyloid peptide (Aβ) production and modulation of amyloid precursor protein (APP) processing. MATERIALS AND METHODS The selected plants were extracted successively with 70% ethyl alcohol and absolute alcohol concentrated with rotary evaporation then lyophilized. Using a mouse neuroblastoma cells expressing Swedish APP (N2a-SweAPP), MTT assay was performed to determine the toxicity concentration of each herbal extract. In order to evaluate the activity of ethanol extracts on Aβ inhibition, the N2a-SweAPP cells were treated with a high and low dosage of different extracts for 24h, Aβs levels in the supernatant of conditioned media were assessed by ELISA. The most active extracts were then subjected to test the effect on APP modulation in N2a-SweAPP cells by determining their effect on sAPPα and sAPPβ through western blot analysis. RESULTS Among the screened herbal extracts, only Polygonum multiflorum Thunb. (root) and Convolvulus pluricaulis Choisy. (leaves) showed profound inhibition of Aβ production. MTT assay demonstrated that the anti-Aβ effect of these extracts was not a sequential consequence of their cytotoxicity. The extract of Polygonum multiflorum Thunb. (root) could reduce Aβ production only through APP modulation, which was exhibited together with the up-regulation of sAPPα and down-regulation of sAPPβ. CONCLUSION The results show that extract of Polygonum multiflorum Thunb. (root) can lower Aβ generation by modulating APP processing in the N2a-SwedAPP cell line. These results corroborate the traditional use of Polygonum multiflorum Thunb. (root) for the treatment of cognitive disorders including Alzheimer's disease (AD).
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MESH Headings
- Amyloid beta-Peptides/metabolism
- Amyloid beta-Protein Precursor/genetics
- Amyloid beta-Protein Precursor/metabolism
- Animals
- Blotting, Western
- Cell Line, Tumor
- Cell Survival/drug effects
- Convolvulus/chemistry
- Dose-Response Relationship, Drug
- Drugs, Chinese Herbal/isolation & purification
- Drugs, Chinese Herbal/pharmacology
- Drugs, Chinese Herbal/toxicity
- Enzyme-Linked Immunosorbent Assay
- Ethanol/chemistry
- Medicine, Ayurvedic
- Medicine, Chinese Traditional
- Memory/drug effects
- Mice
- Mutation
- Neurons/drug effects
- Neurons/metabolism
- Nootropic Agents/isolation & purification
- Nootropic Agents/pharmacology
- Nootropic Agents/toxicity
- Plant Leaves
- Plant Roots
- Plants, Medicinal
- Polygonum/chemistry
- Protein Processing, Post-Translational
- Solvents/chemistry
- Transfection
- Withania/chemistry
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Affiliation(s)
- Liang-Feng Liu
- School of Chinese Medicine, Hong Kong Baptist University, Kowloon Tong, Hong Kong
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Kumar S, Okello EJ, Harris JR. Experimental inhibition of fibrillogenesis and neurotoxicity by amyloid-beta (Aβ) and other disease-related peptides/proteins by plant extracts and herbal compounds. Subcell Biochem 2012; 65:295-326. [PMID: 23225009 DOI: 10.1007/978-94-007-5416-4_13] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Amyloid-β (Aβ) fibrillogenesis and associated cyto/neurotoxicity are major pathological events and hallmarks in diseases such as Alzheimer's disease (AD). The understanding of Aβ molecular pathogenesis is currently a pharmacological target for rational drug design and discovery based on reduction of Aβ generation, inhibition of Aβ fibrillogenesis and aggregation, enhancement of Aβ clearance and amelioration of associated cytotoxicity. Molecular mechanisms for other amyloidoses, such as transthyretin amyloidosis, AL-amyloidosis, as well as α-synuclein and prion protein are also pharmacological targets for current drug therapy, design and discovery. We report on natural herbal compounds and extracts that are capable binding to and inhibiting different targets associated with AD and other amyloid-associated diseases, providing a basis for future therapeutic strategies. Many herbal compounds, including curcumin, galantamine, quercetin and other polyphenols, are under active investigation and hold considerable potential for future prophylactic and therapeutic treatment against AD and other neurodegenerative diseases, as well as systemic amyloid diseases. A common emerging theme throughout many studies is the anti-oxidant and anti-inflammatory properties of the compounds or herbal extracts under investigation, within the context of the inhibition of cyto/neurotoxicity and anti-amyloid activity.
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Affiliation(s)
- Suresh Kumar
- University School of Biotechnology, GGS Indraprastha University, Sector 16C, 10075, Dwarka, Delhi, India,
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