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Lima Bezerra JJ, Lucena RB. Poisonings in ruminants by Cenostigma pyramidale (Tul.) Gagnon & G.P.Lewis (Fabaceae): A mini-review of teratogenic potential and phytochemical evidence. Toxicon 2024; 246:107794. [PMID: 38851021 DOI: 10.1016/j.toxicon.2024.107794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2024] [Revised: 05/29/2024] [Accepted: 06/03/2024] [Indexed: 06/10/2024]
Abstract
Teratogenic plants can be found in pastures in different parts of the world and represent a threat to the reproduction of ruminants. In the northeast region of Brazil, several studies have indicated that Cenostigma pyramidale (Tul.) Gagnon & G.P.Lewis is one of the main poisonous plants that causes reproductive problems in sheep and goats. In this context, the present study reviewed spontaneous and experimental poisonings reports by C. pyramidale in sheep and goats, as well as analyzing the phytochemical evidence related to this species. The scientific documents were retrieved from different databases and, after applying the selection criteria, a total of 16 articles published between 2000 and 2024 were included in this review. Cenostigma pyramidale causes embryonic loss, abortion, and congenital malformations in pregnant sheep and goats in the Brazilian semi-arid region. The main malformations observed in newborn animals are arthrogryposis, scoliosis, micrognathia, multiple skull deformities, cleft palate, and brachygnathism. Many secondary metabolites have already been isolated from C. pyramidale, however, to date, no evidence has been found regarding the possible teratogenic compounds that occur in this plant. From this perspective, new phytochemical studies are necessary to help unravel the mechanisms of action of embryotoxic agents from C. pyramidale.
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Affiliation(s)
- José Jailson Lima Bezerra
- Universidade Federal de Pernambuco, Departamento de Botânica, Av. da Engenharia, s/n, Cidade Universitária, 50670-420, Recife, PE, Brazil
| | - Ricardo Barbosa Lucena
- Universidade Federal da Paraíba, Centro de Ciências Agrárias, Rodovia PB 079 - Km 12, 58397-000, Areia, PB, Brazil.
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Faysal M, Dehbia Z, Zehravi M, Sweilam SH, Haque MA, Kumar KP, Chakole RD, Shelke SP, Sirikonda S, Nafady MH, Khan SL, Nainu F, Ahmad I, Emran TB. Flavonoids as Potential Therapeutics Against Neurodegenerative Disorders: Unlocking the Prospects. Neurochem Res 2024; 49:1926-1944. [PMID: 38822985 DOI: 10.1007/s11064-024-04177-x] [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: 07/17/2023] [Revised: 04/13/2024] [Accepted: 05/22/2024] [Indexed: 06/03/2024]
Abstract
Neurodegeneration, the decline of nerve cells in the brain, is a common feature of neurodegenerative disorders (NDDs). Oxidative stress, a key factor in NDDs such as Alzheimer's disease, Parkinson's disease, amyotrophic lateral sclerosis, and Huntington's disease can lead to neuronal cell death, mitochondria impairment, excitotoxicity, and Ca2+ stress. Environmental factors compromising stress response lead to cell damage, necessitating novel therapeutics for preventing or treating brain disorders in older individuals and an aging population. Synthetic medications offer symptomatic benefits but can have adverse effects. This research explores the potential of flavonoids derived from plants in treating NDDs. Flavonoids compounds, have been studied for their potential to enter the brain and treat NDDs. These compounds have diverse biological effects and are currently being explored for their potential in the treatment of central nervous system disorders. Flavonoids have various beneficial effects, including antiviral, anti-allergic, antiplatelet, anti-inflammatory, anti-tumor, anti-apoptotic, and antioxidant properties. Their potential to alleviate symptoms of NDDs is significant.
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Affiliation(s)
- Md Faysal
- Department of Pharmacy, Faculty of Allied Health Sciences, Daffodil International University, Dhaka, 1207, Bangladesh
| | - Zerrouki Dehbia
- Laboratory of Agro - Biotechnology and Nutrition in Semi-Arid Zones, Faculty of Nature and Life Sciences, University of Ibn Khaldoun, Tiaret, Algeria
| | - Mehrukh Zehravi
- Department of Clinical Pharmacy, College of Dentistry & Pharmacy, Buraydah Private Colleges, Buraydah, 51418, Saudi Arabia.
| | - Sherouk Hussein Sweilam
- Department of Pharmacognosy, College of Pharmacy, Prince Sattam Bin Abdulaziz University, Al-Kharj, 11942, Saudi Arabia
- Department of Pharmacognosy, Faculty of Pharmacy, Egyptian Russian University, Cairo-Suez Road, Badr City, 11829, Cairo, Egypt
| | - M Akiful Haque
- Department of Pharmaceutical Analysis, School of Pharmacy, Anurag University, Ghatkesar, Hyderabad, 500088, India
| | - Kusuma Praveen Kumar
- Department of Pharmaceutical Chemistry, School of Pharmaceutical Sciences, Delhi Pharmaceutical Sciences and Research University (DPSRU), Govt. of N.C.T. of Delhi, Pushpvihar, New Delhi, 110017, India
| | - Rita D Chakole
- Department of Pharmaceutical Chemistry, Government College of Pharmacy, Karad, 415124, Maharashtra, India
| | - Satish P Shelke
- Department of Pharmaceutical Chemistry, Rajarshi Shahu College of Pharmacy, Buldana, 443001, Maharashtra, India
| | - Swapna Sirikonda
- Department of Pharmaceutics, School of Pharmacy, Anurag University, Ghatkesar, 500088, Hyderabad, India
| | - Mohamed H Nafady
- Faculty of Applied Health Science Technology, Misr University for Science and Technology, Giza, 12568, Egypt
| | - Sharuk L Khan
- Department of Pharmaceutical Chemistry, N.B.S. Institute of Pharmacy, Ausa, 413520, Maharashtra, India
| | - Firzan Nainu
- Department of Pharmacy, Faculty of Pharmacy, Hasanuddin University, Makassar, 90245, Indonesia
| | - Irfan Ahmad
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, King Khalid University, Abha, Saudi Arabia
| | - Talha Bin Emran
- Department of Pharmacy, Faculty of Allied Health Sciences, Daffodil International University, Dhaka, 1207, Bangladesh.
- Department of Pharmacy, BGC Trust University Bangladesh, Chittagong, 4381, Bangladesh.
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Dos Santos BL, Dos Santos CC, da Silva KC, Nonaka CKV, Souza BSDF, David JM, de Oliveira JVR, Costa MDFD, Butt AM, da Silva VDA, Costa SL. The Phytochemical Agathisflavone Modulates miR146a and miR155 in Activated Microglia Involving STAT3 Signaling. Int J Mol Sci 2024; 25:2547. [PMID: 38473794 DOI: 10.3390/ijms25052547] [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: 12/31/2023] [Revised: 01/23/2024] [Accepted: 02/06/2024] [Indexed: 03/14/2024] Open
Abstract
MicroRNAs (miRs) act as important post-transcriptional regulators of gene expression in glial cells and have been shown to be involved in the pathogenesis of neurodegenerative diseases, including Alzheimer's disease (AD). Here, we investigated the effects of agathisflavone, a biflavonoid purified from the leaves of Cenostigma pyramidale (Tul.), on modulating the expression of miRs and inflammatory mediators in activated microglia. C20 human microglia were exposed to oligomers of the β-amyloid peptide (Aβ, 500 nM) for 4 h or to lipopolysaccharide (LPS, 1 µg/mL) for 24 h and then treated or not with agathisflavone (1 µM) for 24 h. We observed that β-amyloid and LPS activated microglia to an inflammatory state, with increased expression of miR-146a, miR-155, IL1-β, IL-6, and NOS2. Treatment with agathisflavone resulted in a significant reduction in miR146a and miR-155 induced by LPS or Aβ, as well as inflammatory cytokines IL1-β, IL-6, and NOS2. In cells stimulated with Aβ, there was an increase in p-STAT3 expression that was reduced by agathisflavone treatment. These data identify a role for miRs in the anti-inflammatory effect of agathisflavone on microglia in models of neuroinflammation and AD.
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Affiliation(s)
- Balbino Lino Dos Santos
- Laboratory of Neurochemistry and Cellular Biology, Institute of Health Sciences, Federal University of Bahia, Av. Reitor Miguel Calmon S/N, Salvador 40231-300, BA, Brazil
- College of Nursing, Federal University of Vale do São Francisco, Av. José de Sá Maniçoba, S/N, Petrolina 56304-917, PE, Brazil
| | - Cleonice Creusa Dos Santos
- Laboratory of Neurochemistry and Cellular Biology, Institute of Health Sciences, Federal University of Bahia, Av. Reitor Miguel Calmon S/N, Salvador 40231-300, BA, Brazil
| | - Karina Costa da Silva
- Laboratory of Neurochemistry and Cellular Biology, Institute of Health Sciences, Federal University of Bahia, Av. Reitor Miguel Calmon S/N, Salvador 40231-300, BA, Brazil
| | - Carolina Kymie Vasques Nonaka
- Center of Biotechnology and Cell Therapy, São Rafael Hospital, D'Or Institute for Research and Teaching (IDOR), Salvador 41253-190, BA, Brazil
| | - Bruno Solano de Freitas Souza
- Center of Biotechnology and Cell Therapy, São Rafael Hospital, D'Or Institute for Research and Teaching (IDOR), Salvador 41253-190, BA, Brazil
- Instituto Gonçalo Moniz, Fundação Oswaldo Cruz (FIOCRUZ), Salvador 40296-710, BA, Brazil
| | - Jorge Mauricio David
- Department of General and Inorganic Chemistry, Institute of Chemistry, Federal University of Bahia, Salvador 40231-300, BA, Brazil
| | - Juciele Valéria Ribeiro de Oliveira
- Laboratory of Neurochemistry and Cellular Biology, Institute of Health Sciences, Federal University of Bahia, Av. Reitor Miguel Calmon S/N, Salvador 40231-300, BA, Brazil
| | - Maria de Fátima Dias Costa
- Laboratory of Neurochemistry and Cellular Biology, Institute of Health Sciences, Federal University of Bahia, Av. Reitor Miguel Calmon S/N, Salvador 40231-300, BA, Brazil
- National Institute of Translational Neuroscience (INNT), Rio de Janeiro 21941-971, RJ, Brazil
| | - Arthur Morgan Butt
- School of Pharmacy and Biomedical Sciences, University of Portsmouth, Portsmouth PO1 2DT, UK
| | - Victor Diogenes Amaral da Silva
- Laboratory of Neurochemistry and Cellular Biology, Institute of Health Sciences, Federal University of Bahia, Av. Reitor Miguel Calmon S/N, Salvador 40231-300, BA, Brazil
| | - Silvia Lima Costa
- Laboratory of Neurochemistry and Cellular Biology, Institute of Health Sciences, Federal University of Bahia, Av. Reitor Miguel Calmon S/N, Salvador 40231-300, BA, Brazil
- National Institute of Translational Neuroscience (INNT), Rio de Janeiro 21941-971, RJ, Brazil
- Instituto de Ciências da Saúde, Av. Reitor Miguel Calmon S/N Vale do Canela, Salvador 40110-902, BA, Brazil
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Dos Santos BL, Dos Santos CC, Soares JRP, da Silva KC, de Oliveira JVR, Pereira GS, de Araújo FM, Costa MDFD, David JM, da Silva VDA, Butt AM, Costa SL. The Flavonoid Agathisflavone Directs Brain Microglia/Macrophages to a Neuroprotective Anti-Inflammatory and Antioxidant State via Regulation of NLRP3 Inflammasome. Pharmaceutics 2023; 15:pharmaceutics15051410. [PMID: 37242652 DOI: 10.3390/pharmaceutics15051410] [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: 03/05/2023] [Revised: 04/16/2023] [Accepted: 04/19/2023] [Indexed: 05/28/2023] Open
Abstract
Agathisflavone, purified from Cenostigma pyramidale (Tul.) has been shown to be neuroprotective in in vitro models of glutamate-induced excitotoxicity and inflammatory damage. However, the potential role of microglial regulation by agathisflavone in these neuroprotective effects is unclear. Here we investigated the effects of agathisflavone in microglia submitted to inflammatory stimulus in view of elucidating mechanisms of neuroprotection. Microglia isolated from cortices of newborn Wistar rats were exposed to Escherichia coli lipopolysaccharide (LPS, 1 µg/mL) and treated or not with agathisflavone (1 µM). Neuronal PC12 cells were exposed to a conditioned medium from microglia (MCM) treated or not with agathisflavone. We observed that LPS induced microglia to assume an activated inflammatory state (increased CD68, more rounded/amoeboid phenotype). However, most microglia exposed to LPS and agathisflavone, presented an anti-inflammatory profile (increased CD206 and branched-phenotype), associated with the reduction in NO, GSH mRNA for NRLP3 inflammasome, IL1-β, IL-6, IL-18, TNF, CCL5, and CCL2. Molecular docking also showed that agathisflavone bound at the NLRP3 NACTH inhibitory domain. Moreover, in PC12 cell cultures exposed to the MCM previously treated with the flavonoid most cells preserved neurites and increased expression of β-tubulin III. Thus, these data reinforce the anti-inflammatory activity and the neuroprotective effect of agathisflavone, effects associated with the control of NLRP3 inflammasome, standing out it as a promising molecule for the treatment or prevention of neurodegenerative diseases.
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Affiliation(s)
- Balbino Lino Dos Santos
- Laboratory of Neurochemistry and Cellular Biology, Institute of Health Sciences, Federal University of Bahia, Av. Reitor Miguel Calmon S/N, Salvador 40231-300, Bahia, Brazil
- College of Nursing, Federal University of Vale do São Francisco, Petrolina 56304-917, Pernambuco, Brazil
| | - Cleonice Creusa Dos Santos
- Laboratory of Neurochemistry and Cellular Biology, Institute of Health Sciences, Federal University of Bahia, Av. Reitor Miguel Calmon S/N, Salvador 40231-300, Bahia, Brazil
| | - Janaina R P Soares
- Laboratory of Neurochemistry and Cellular Biology, Institute of Health Sciences, Federal University of Bahia, Av. Reitor Miguel Calmon S/N, Salvador 40231-300, Bahia, Brazil
| | - Karina C da Silva
- Laboratory of Neurochemistry and Cellular Biology, Institute of Health Sciences, Federal University of Bahia, Av. Reitor Miguel Calmon S/N, Salvador 40231-300, Bahia, Brazil
| | - Juciele Valeria R de Oliveira
- Laboratory of Neurochemistry and Cellular Biology, Institute of Health Sciences, Federal University of Bahia, Av. Reitor Miguel Calmon S/N, Salvador 40231-300, Bahia, Brazil
| | - Gabriele S Pereira
- Group of Studies and Research for Health Development, University Salvador, Salvador 40140-110, Bahia, Brazil
| | - Fillipe M de Araújo
- Laboratory of Neurochemistry and Cellular Biology, Institute of Health Sciences, Federal University of Bahia, Av. Reitor Miguel Calmon S/N, Salvador 40231-300, Bahia, Brazil
- Group of Studies and Research for Health Development, University Salvador, Salvador 40140-110, Bahia, Brazil
| | - Maria de Fátima D Costa
- Laboratory of Neurochemistry and Cellular Biology, Institute of Health Sciences, Federal University of Bahia, Av. Reitor Miguel Calmon S/N, Salvador 40231-300, Bahia, Brazil
| | - Jorge Mauricio David
- Department of General and Inorganic Chemistry, Institute of Chemistry, University Federal da Bahia, Salvador 40170-110, Bahia, Brazil
| | - Victor Diogenes A da Silva
- Laboratory of Neurochemistry and Cellular Biology, Institute of Health Sciences, Federal University of Bahia, Av. Reitor Miguel Calmon S/N, Salvador 40231-300, Bahia, Brazil
| | - Arthur Morgan Butt
- School of Pharmacy and Biomedical Sciences, University of Portsmouth, Portsmouth PO1 2UP, UK
| | - Silvia Lima Costa
- Laboratory of Neurochemistry and Cellular Biology, Institute of Health Sciences, Federal University of Bahia, Av. Reitor Miguel Calmon S/N, Salvador 40231-300, Bahia, Brazil
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5
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de Almeida MMA, Watson AES, Bibi S, Dittmann NL, Goodkey K, Sharafodinzadeh P, Galleguillos D, Nakhaei-Nejad M, Kosaraju J, Steinberg N, Wang BS, Footz T, Giuliani F, Wang J, Sipione S, Edgar JM, Voronova A. Fractalkine enhances oligodendrocyte regeneration and remyelination in a demyelination mouse model. Stem Cell Reports 2023; 18:519-533. [PMID: 36608690 PMCID: PMC9968989 DOI: 10.1016/j.stemcr.2022.12.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Revised: 12/06/2022] [Accepted: 12/07/2022] [Indexed: 01/07/2023] Open
Abstract
Demyelinating disorders of the central nervous system (CNS) occur when myelin and oligodendrocytes are damaged or lost. Remyelination and regeneration of oligodendrocytes can be achieved from endogenous oligodendrocyte precursor cells (OPCs) that reside in the adult CNS tissue. Using a cuprizone mouse model of demyelination, we show that infusion of fractalkine (CX3CL1) into the demyelinated murine brain increases de novo oligodendrocyte formation and enhances remyelination in the corpus callosum and cortical gray matter. This is achieved by increased OPC proliferation in the cortical gray matter as well as OPC differentiation and attenuation of microglia/macrophage activation both in corpus callosum and cortical gray matter. Finally, we show that activated OPCs and microglia/macrophages express fractalkine receptor CX3CR1 in vivo, and that in OPC-microglia co-cultures fractalkine increases in vitro oligodendrocyte differentiation by modulating both OPC and microglia biology. Our results demonstrate a novel pro-regenerative role of fractalkine in a demyelinating mouse model.
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Affiliation(s)
- Monique M A de Almeida
- Department of Medical Genetics, Faculty of Medicine & Dentistry, University of Alberta, Edmonton, AB T6G 2H7, Canada; Neuroscience and Mental Health Institute, Faculty of Medicine & Dentistry, Edmonton, AB T6G 2E1, Canada
| | - Adrianne E S Watson
- Department of Medical Genetics, Faculty of Medicine & Dentistry, University of Alberta, Edmonton, AB T6G 2H7, Canada; Women and Children's Health Research Institute, University of Alberta, 5-083 Edmonton Clinic Health Academy, 11405 87 Avenue NW, Edmonton, AB T6G 1C9, Canada
| | - Sana Bibi
- Department of Medical Genetics, Faculty of Medicine & Dentistry, University of Alberta, Edmonton, AB T6G 2H7, Canada
| | - Nicole L Dittmann
- Department of Medical Genetics, Faculty of Medicine & Dentistry, University of Alberta, Edmonton, AB T6G 2H7, Canada; Neuroscience and Mental Health Institute, Faculty of Medicine & Dentistry, Edmonton, AB T6G 2E1, Canada
| | - Kara Goodkey
- Department of Medical Genetics, Faculty of Medicine & Dentistry, University of Alberta, Edmonton, AB T6G 2H7, Canada; Women and Children's Health Research Institute, University of Alberta, 5-083 Edmonton Clinic Health Academy, 11405 87 Avenue NW, Edmonton, AB T6G 1C9, Canada
| | - Pedram Sharafodinzadeh
- Department of Medical Genetics, Faculty of Medicine & Dentistry, University of Alberta, Edmonton, AB T6G 2H7, Canada
| | - Danny Galleguillos
- Neuroscience and Mental Health Institute, Faculty of Medicine & Dentistry, Edmonton, AB T6G 2E1, Canada; Department of Pharmacology, Faculty of Medicine & Dentistry, Edmonton, AB T6G 2H7, Canada
| | - Maryam Nakhaei-Nejad
- Department of Medicine, Faculty of Medicine & Dentistry, Edmonton, AB T6G 2H7, Canada
| | - Jayasankar Kosaraju
- Regenerative Medicine Program, Ottawa Hospital Research Institute, Ottawa, ON K1H 8L6, Canada
| | - Noam Steinberg
- Neuroscience and Mental Health Institute, Faculty of Medicine & Dentistry, Edmonton, AB T6G 2E1, Canada; Department of Pharmacology, Faculty of Medicine & Dentistry, Edmonton, AB T6G 2H7, Canada
| | - Beatrix S Wang
- Department of Medical Genetics, Faculty of Medicine & Dentistry, University of Alberta, Edmonton, AB T6G 2H7, Canada; Women and Children's Health Research Institute, University of Alberta, 5-083 Edmonton Clinic Health Academy, 11405 87 Avenue NW, Edmonton, AB T6G 1C9, Canada
| | - Tim Footz
- Department of Medical Genetics, Faculty of Medicine & Dentistry, University of Alberta, Edmonton, AB T6G 2H7, Canada
| | - Fabrizio Giuliani
- Department of Medicine, Faculty of Medicine & Dentistry, Edmonton, AB T6G 2H7, Canada; Multiple Sclerosis Centre and Department of Cell Biology, Faculty of Medicine & Dentistry, Edmonton, AB T6G 2H7, Canada
| | - Jing Wang
- Regenerative Medicine Program, Ottawa Hospital Research Institute, Ottawa, ON K1H 8L6, Canada; Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa Brain and Mind Research Institute, Ottawa, ON K1H 8M5, Canada
| | - Simonetta Sipione
- Neuroscience and Mental Health Institute, Faculty of Medicine & Dentistry, Edmonton, AB T6G 2E1, Canada; Department of Pharmacology, Faculty of Medicine & Dentistry, Edmonton, AB T6G 2H7, Canada
| | - Julia M Edgar
- School of Infection and Immunity, College of Medical Veterinary and Life Sciences, University of Glasgow, Glasgow G12 8TA, UK
| | - Anastassia Voronova
- Department of Medical Genetics, Faculty of Medicine & Dentistry, University of Alberta, Edmonton, AB T6G 2H7, Canada; Women and Children's Health Research Institute, University of Alberta, 5-083 Edmonton Clinic Health Academy, 11405 87 Avenue NW, Edmonton, AB T6G 1C9, Canada; Neuroscience and Mental Health Institute, Faculty of Medicine & Dentistry, Edmonton, AB T6G 2E1, Canada; Department of Cell Biology, Faculty of Medicine & Dentistry, Edmonton, AB T6G 2H7, Canada; Multiple Sclerosis Centre and Department of Cell Biology, Faculty of Medicine & Dentistry, Edmonton, AB T6G 2H7, Canada.
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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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Guan S, Sun L, Wang X, Huang X, Luo T. Isoschaftoside Inhibits Lipopolysaccharide-Induced Inflammation in Microglia through Regulation of HIF-1 α-Mediated Metabolic Reprogramming. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE : ECAM 2022; 2022:5227335. [PMID: 36467557 PMCID: PMC9711954 DOI: 10.1155/2022/5227335] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2022] [Revised: 08/15/2022] [Accepted: 10/19/2022] [Indexed: 08/30/2023]
Abstract
Isoschaftoside is a C-glycosyl flavonoid extracted from the root exudates of Desmodium uncinatum and Abrus cantoniensis. Previous studies suggested that C-glycosyl flavonoid has neuroprotective effects with the property of reducing oxidative stress and inflammatory markers. Microglia are key cellular mediators of neuroinflammation in the central nervous system. The aim of this study was to investigate the effect of isoschaftoside on lipopolysaccharide-induced activation of BV-2 microglial cells. The BV-2 cells were exposed to 10 ng/ml lipopolysaccharide and isoschaftoside (0-1000 μM). Isoschaftoside effectively inhibited lipopolysaccharide-induced nitric oxide production and proinflammatory cytokines including iNOS, TNF-α, IL-1β, and COX2 expression. Isoschaftoside also significantly reduced lipopolysaccharide-induced HIF-1α, HK2, and PFKFB3 protein expression. Induction of HIF-1α accumulation by CoCl2 was inhibited by isoschaftoside, while the HIF-1α specific inhibitor Kc7f2 mitigated the metabolic reprogramming and anti-inflammatory effect of isoschaftoside. Furthermore, isoschaftoside attenuated lipopolysaccharide-induced phosphorylation of ERK1/2 and mTOR. These results suggest that isoschaftoside can suppress inflammatory responses in lipopolysaccharide-activated microglia, and the mechanism was partly due to inhibition of the HIF-1α-mediated metabolic reprogramming pathway.
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Affiliation(s)
- Shuyuan Guan
- Department of Anesthesiology, Peking University Shenzhen Hospital, Shenzhen 518036, China
| | - Lingbin Sun
- Department of Anesthesiology, Peking University Shenzhen Hospital, Shenzhen 518036, China
| | - Xihua Wang
- Department of Anesthesiology, Peking University Shenzhen Hospital, Shenzhen 518036, China
| | - Xirui Huang
- Department of Anesthesiology, Peking University Shenzhen Hospital, Shenzhen 518036, China
| | - Tao Luo
- Department of Anesthesiology, Peking University Shenzhen Hospital, Shenzhen 518036, China
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da Rosa MM, de Amorim LC, Alves JVDO, Aguiar IFDS, Oliveira FGDS, da Silva MV, dos Santos MTC. The promising role of natural products in Alzheimer's disease. BRAIN DISORDERS 2022. [DOI: 10.1016/j.dscb.2022.100049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022] Open
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9
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de Almeida MMA, Pieropan F, Footz T, David JM, David JP, da Silva VDA, Dos Santos Souza C, Voronova A, Butt AM, Costa SL. Agathisflavone Modifies Microglial Activation State and Myelination in Organotypic Cerebellar Slices Culture. J Neuroimmune Pharmacol 2022; 17:206-217. [PMID: 33881709 DOI: 10.1007/s11481-021-09991-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Accepted: 03/10/2021] [Indexed: 12/29/2022]
Abstract
Oligodendrocytes produce the myelin that is critical for rapid neuronal transmission in the central nervous system (CNS). Disruption of myelin has devastating effects on CNS function, as in the demyelinating disease multiple sclerosis (MS). Microglia are the endogenous immune cells of the CNS and play a central role in demyelination and repair. There is a need for new potential therapies that regulate myelination and microglia to promote repair. Agathisflavone (FAB) is a non-toxic flavonoid that is known for its anti-inflammatory and neuroprotective properties. Here, we examined the effects of FAB (5-50 μM) on myelination and microglia in organotypic cerebellar slices prepared from P10-P12 Sox10-EGFP and Plp1-DsRed transgenic mice. Immunofluorescence labeling for myelin basic protein (MBP) and neurofilament (NF) demonstrates that FAB significantly increased the proportion of MBP + /NF + axons but did not affect the overall number of oligodendroglia or axons, or the expression of oligodendroglial proteins CNPase and MBP. FAB is known to be a phytoestrogen, but blockade of α- or β- estrogen receptors (ER) indicated the myelination promoting effects of FAB were not mediated by ER. Examination of microglial responses by Iba1 immunohistochemistry demonstrated that FAB markedly altered microglial morphology, characterized by smaller somata and reduced branching of their processes, consistent with a decreased state of activation, and increased Iba1 protein expression. The results provide evidence that FAB increases the extent of axonal coverage by MBP immunopositive oligodendroglial processes and has a modulatory effect upon microglial cells, which are important therapeutic strategies in multiple neuropathologies.
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Affiliation(s)
- Monique Marylin Alves de Almeida
- Department of Biochemistry and Biophysics, Institute of Health Sciences, Federal University of Bahia, Bahia, Brazil
- School of Pharmacy and Biomedical Science, University of Portsmouth, Portsmouth, UK
- Department of Medical Genetics, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Canada
| | - Francesca Pieropan
- School of Pharmacy and Biomedical Science, University of Portsmouth, Portsmouth, UK
| | - Tim Footz
- Department of Medical Genetics, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Canada
| | - Jorge Mauricio David
- Department of General and Inorganic Chemistry, Institute of Chemistry, Federal University of Bahia, Bahia, Brazil
| | - Juceni Pereira David
- Department of Medication, Faculty of Pharmacy, Federal University of Bahia, Bahia, Brazil
| | | | - Cleide Dos Santos Souza
- Department of Biochemistry and Biophysics, Institute of Health Sciences, Federal University of Bahia, Bahia, Brazil
- Sheffield Institute for Translational Neuroscience, University of Sheffield, Sheffield, UK
| | - Anastassia Voronova
- Department of Medical Genetics, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Canada
| | - Arthur Morgan Butt
- School of Pharmacy and Biomedical Science, University of Portsmouth, Portsmouth, UK.
| | - Silvia Lima Costa
- Department of Biochemistry and Biophysics, Institute of Health Sciences, Federal University of Bahia, Bahia, Brazil.
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Rivera AD, Pieropan F, Williams G, Calzolari F, Butt AM, Azim K. Drug connectivity mapping and functional analysis reveal therapeutic small molecules that differentially modulate myelination. Biomed Pharmacother 2022; 145:112436. [PMID: 34813998 PMCID: PMC8664715 DOI: 10.1016/j.biopha.2021.112436] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Revised: 10/29/2021] [Accepted: 11/12/2021] [Indexed: 12/30/2022] Open
Abstract
Disruption or loss of oligodendrocytes (OLs) and myelin has devastating effects on CNS function and integrity, which occur in diverse neurological disorders, including Multiple Sclerosis (MS), Alzheimer's disease and neuropsychiatric disorders. Hence, there is a need to develop new therapies that promote oligodendrocyte regeneration and myelin repair. A promising approach is drug repurposing, but most agents have potentially contrasting biological actions depending on the cellular context and their dose-dependent effects on intracellular pathways. Here, we have used a combined systems biology and neurobiological approach to identify compounds that exert positive and negative effects on oligodendroglia, depending on concentration. Notably, next generation pharmacogenomic analysis identified the PI3K/Akt modulator LY294002 as the most highly ranked small molecule with both pro- and anti-oligodendroglial concentration-dependent effects. We validated these in silico findings using multidisciplinary approaches to reveal a profoundly bipartite effect of LY294002 on the generation of OPCs and their differentiation into myelinating oligodendrocytes in both postnatal and adult contexts. Finally, we employed transcriptional profiling and signalling pathway activity assays to determine cell-specific mechanisms of action of LY294002 on oligodendrocytes and resolve optimal in vivo conditions required to promote myelin repair. These results demonstrate the power of multidisciplinary strategies in determining the therapeutic potential of small molecules in neurodegenerative disorders.
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Affiliation(s)
- A D Rivera
- Institute of Biomedical and Biomolecular Sciences, School of Pharmacy and Biomedical Sciences, University of Portsmouth, St Michael's Building, White Swan Road, PO1 2DT Portsmouth, UK; Section of Human Anatomy, Department of Neuroscience, University of Padua, Padua, Italy.
| | - F Pieropan
- Institute of Biomedical and Biomolecular Sciences, School of Pharmacy and Biomedical Sciences, University of Portsmouth, St Michael's Building, White Swan Road, PO1 2DT Portsmouth, UK
| | - G Williams
- Wolfson Centre for Age-Related Diseases, King's College London, Guy's Campus, London, UK
| | - F Calzolari
- Research Group Adult Neurogenesis & Cellular Reprogramming Institute of Physiological Chemistry, University Medical Center, Johannes Gutenberg University Mainz, Hanns-Dieter-Hüsch-Weg 19, 55128 Mainz, Germany
| | - A M Butt
- Institute of Biomedical and Biomolecular Sciences, School of Pharmacy and Biomedical Sciences, University of Portsmouth, St Michael's Building, White Swan Road, PO1 2DT Portsmouth, UK
| | - K Azim
- Department of Neurology, Neuroregeneration, Medical Faculty, Heinrich-Heine-University, Düsseldorf, Germany.
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Fernandes L, Cardim-Pires TR, Foguel D, Palhano FL. Green Tea Polyphenol Epigallocatechin-Gallate in Amyloid Aggregation and Neurodegenerative Diseases. Front Neurosci 2021; 15:718188. [PMID: 34594185 PMCID: PMC8477582 DOI: 10.3389/fnins.2021.718188] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Accepted: 07/27/2021] [Indexed: 01/04/2023] Open
Abstract
The accumulation of protein aggregates in human tissues is a hallmark of more than 40 diseases called amyloidoses. In seven of these disorders, the aggregation is associated with neurodegenerative processes in the central nervous system such as Alzheimer’s disease (AD), Parkinson’s disease (PD), and Huntington’s disease (HD). The aggregation occurs when certain soluble proteins lose their physiological function and become toxic amyloid species. The amyloid assembly consists of protein filament interactions, which can form fibrillar structures rich in β-sheets. Despite the frequent incidence of these diseases among the elderly, the available treatments are limited and at best palliative, and new therapeutic approaches are needed. Among the many natural compounds that have been evaluated for their ability to prevent or delay the amyloidogenic process is epigallocatechin-3-gallate (EGCG), an abundant and potent polyphenolic molecule present in green tea that has extensive biological activity. There is evidence for EGCG’s ability to inhibit the aggregation of α-synuclein, amyloid-β, and huntingtin proteins, respectively associated with PD, AD, and HD. It prevents fibrillogenesis (in vitro and in vivo), reduces amyloid cytotoxicity, and remodels fibrils to form non-toxic amorphous species that lack seed propagation. Although it is an antioxidant, EGCG in an oxidized state can promote fibrils’ remodeling through formation of Schiff bases and crosslinking the fibrils. Moreover, microparticles to drug delivery were synthesized from oxidized EGCG and loaded with a second anti-amyloidogenic molecule, obtaining a synergistic therapeutic effect. Here, we describe several pre-clinical and clinical studies involving EGCG and neurodegenerative diseases and their related mechanisms.
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Affiliation(s)
- Luiza Fernandes
- Instituto de Bioquímica Médica Leopoldo de Meis, Programa de Biologia Estrutural, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Thyago R Cardim-Pires
- Instituto de Bioquímica Médica Leopoldo de Meis, Programa de Biologia Estrutural, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Debora Foguel
- Instituto de Bioquímica Médica Leopoldo de Meis, Programa de Biologia Estrutural, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Fernando L Palhano
- Instituto de Bioquímica Médica Leopoldo de Meis, Programa de Biologia Estrutural, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
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