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Huang Q, Wu W, Wen Y, Lu S, Zhao C. Potential therapeutic natural compounds for the treatment of Alzheimer's disease. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2024; 132:155822. [PMID: 38909512 DOI: 10.1016/j.phymed.2024.155822] [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: 02/17/2024] [Revised: 06/09/2024] [Accepted: 06/11/2024] [Indexed: 06/25/2024]
Abstract
BACKGROUND Alzheimer's disease (AD) is a complicated neurodegenerative disease with cognitive impairment occurring in the older people, in which extracellular accumulation of β-amyloid and intracellular aggregation of hyperphosphorylated tau are regarded as the prevailing theories. However, the exact AD mechanism has not been determined. Moreover, there is no effective treatment available in phase III trials to eradicate AD, which is imperative to explore novel treatments. PURPOSE A number of up-to-date pre-clinical studies on cognitive impairment is beneficial to clarify the pathology of AD. This review recapitulates several advances in AD pathobiology and discusses the neuroprotective effects of natural compounds, such as phenolic compounds, natural polysaccharides and oligosaccharides, peptide, and lipids, underscoring the therapeutic potential for AD. METHODS Electronic databases involving PubMed, Web of Science, and Google Scholar were searched up to October 2023. Articles were conducted using the keywords like Alzheimer's disease, pathogenic mechanisms, natural compounds, and neuroprotection. RESULT This review summarized several AD pathologies and the neuroprotective effects of natural compounds such as natural polysaccharides and oligosaccharides, peptide, and lipids. CONCLUSION We have discussed the pathogenic mechanisms of AD and the effect natural products on neurodegenerative diseases particularly in treating AD. Specifically, we investigated the molecular pathways and links between natural compounds and Alzheimer's disease such as through NF-κB, Nrf2, and mTOR pathway. Further investigation is necessary in exploring the bioactivity and effectiveness of natural compounds in clinical trials, which may provide a promising treatment for AD patients.
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Affiliation(s)
- Qihui Huang
- State Key Laboratory of Mariculture Breeding, Key Laboratory of Marine Biotechnology of Fujian Province, Fujian Agriculture and Forestry University, Fuzhou 350002, China; Universidade de Vigo, Nutrition and Bromatology Group, Department of Analytical Chemistry and Food Science, Instituto de Agroecoloxía e Alimentación (IAA)-CITEXVI, 36310 Vigo, Spain
| | - Weihao Wu
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Yuxi Wen
- State Key Laboratory of Mariculture Breeding, Key Laboratory of Marine Biotechnology of Fujian Province, Fujian Agriculture and Forestry University, Fuzhou 350002, China; Universidade de Vigo, Nutrition and Bromatology Group, Department of Analytical Chemistry and Food Science, Instituto de Agroecoloxía e Alimentación (IAA)-CITEXVI, 36310 Vigo, Spain
| | - Suyue Lu
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Chao Zhao
- State Key Laboratory of Mariculture Breeding, Key Laboratory of Marine Biotechnology of Fujian Province, Fujian Agriculture and Forestry University, Fuzhou 350002, China; College of Marine Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
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Goyal R, Mittal P, Gautam RK, Kamal MA, Perveen A, Garg V, Alexiou A, Saboor M, Haque S, Farhana A, Papadakis M, Ashraf GM. Natural products in the management of neurodegenerative diseases. Nutr Metab (Lond) 2024; 21:26. [PMID: 38755627 PMCID: PMC11100221 DOI: 10.1186/s12986-024-00800-4] [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: 10/04/2023] [Accepted: 04/30/2024] [Indexed: 05/18/2024] Open
Abstract
Neurodegenerative diseases represent one of the utmost imperative well-being health issues and apprehensions due to their escalating incidence of mortality. Natural derivatives are more efficacious in various preclinical models of neurodegenerative illnesses. These natural compounds include phytoconstituents in herbs, vegetables, fruits, nuts, and marine and freshwater flora, with remarkable efficacy in mitigating neurodegeneration and enhancing cognitive abilities in preclinical models. According to the latest research, the therapeutic activity of natural substances can be increased by adding phytoconstituents in nanocarriers such as nanoparticles, nanogels, and nanostructured lipid carriers. They can enhance the stability and specificity of the bioactive compounds to a more considerable extent. Nanotechnology can also provide targeting, enhancing their specificity to the respective site of action. In light of these findings, this article discusses the biological and therapeutic potential of natural products and their bioactive derivatives to exert neuroprotective effects and some clinical studies assessing their translational potential to treat neurodegenerative disorders.
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Affiliation(s)
- Rajat Goyal
- MM College of Pharmacy, Maharishi Markandeshwar (Deemed to Be University), Mullana-Ambala, Haryana, 133207, India
| | - Pooja Mittal
- Chitkara College of Pharmacy, Chitkara University, Rajpura-Punjab, India
| | - Rupesh K Gautam
- Department of Pharmacology, Indore Institute of Pharmacy, IIST Campus, Rau, Indore, India.
| | - Mohammad Amjad Kamal
- Institute for Systems Genetics, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu,, China
- King Fahd Medical Research Center, King Abdulaziz University, Jeddah,, Saudi Arabia
- Department of Pharmacy, Faculty of Allied Health Sciences, Daffodil International University, Birulia, Bangladesh
- Enzymoics, Novel Global Community Educational Foundation, 7 Peterlee Place, Hebersham, NSW, 2770, Australia
| | - Asma Perveen
- Glocal School of Life Sciences, Glocal University, Uttar Pradesh, Saharanpur, India
- Princess Dr, Najla Bint Saud Al-Saud Center for Excellence Research in Biotechnology, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Vandana Garg
- Department of Pharmaceutical Sciences, Maharshi Dayanand University, Rohtak Haryana, 124001, India
| | - Athanasios Alexiou
- University Centre for Research & Development, Chandigarh University, Chandigarh-Ludhiana Highway, Mohali, Punjab, India
- Department of Research & Development, 11741, Funogen, Athens, Greece
- Department of Research & Development, AFNP Med, 1030, Vienna, Austria
- Department of Science and Engineering, Novel Global Community Educational Foundation, Hebersham, NSW, 2770, Australia
| | - Muhammad Saboor
- Department of Medical Laboratory Sciences, University of Sharjah, College of Health Sciences, and Research Institute for Medical and Health Sciences, Sharjah, United Arab Emirates
| | - Shafiul Haque
- Research and Scientific Studies Unit, College of Nursing and Health Sciences, Jazan University, 45142, Jazan, Saudi Arabia
- Gilbert and Rose-Marie Chagoury School of Medicine, Lebanese American University, Beirut, Lebanon
- Centre of Medical and Bio-Allied Health Sciences Research, Ajman University, Ajman, United Arab Emirates
| | - Aisha Farhana
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Jouf University, 72388, Aljouf, Saudi Arabia
| | - Marios Papadakis
- Department of Surgery II, University Hospital Witten-Herdecke, University of Witten-Herdecke, Heusnerstrasse 40, 42283, Wuppertal, Germany.
| | - Ghulam Md Ashraf
- Department of Medical Laboratory Sciences, University of Sharjah, College of Health Sciences, and Research Institute for Medical and Health Sciences, Sharjah, United Arab Emirates.
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Abidi SMS, Shukla AK, Randhawa S, Bathla M, Acharya A. Diosgenin loaded cellulose nanoonion impedes different stages of protein aggregation induced cell death via alleviating mitochondrial dysfunction and upregulation of autophagy. Int J Biol Macromol 2024; 266:131108. [PMID: 38531523 DOI: 10.1016/j.ijbiomac.2024.131108] [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: 10/20/2023] [Revised: 03/19/2024] [Accepted: 03/21/2024] [Indexed: 03/28/2024]
Abstract
Protein aggregation is a multifaceted phenomenon prevalent in the progression of neurodegenerative diseases, yielding aggregates of diverse sizes. Recently, increased attention has been directed towards early protein aggregates due to their pronounced toxicity, largely stemming from inflammation mediated by reactive oxygen species (ROS). This study advocates for a therapeutic approach focusing on inflammation control rather than mere ROS inhibition in the context of neurodegenerative disorders. Here, we introduced Camellia sinensis cellulose nanoonion (CS-CNO) as an innovative, biocompatible nanocarrier for encapsulating the phytosteroid diosgenin (DGN@CS-CNO). The resulting nano-assembly, manifesting as spherical entities with dimensions averaging ~180-220 nm, exhibits a remarkable capacity for the gradual and sustained release of approximately 39-44 % of DGN over a 60-hour time frame. DGN@CS-CNO displays a striking ability to inhibit or disassemble various phases of hen egg white lysozyme (HEWL) protein aggregates, including the early (HEWLEA) and late (HEWLLA) stages. In vitro experiments employing HEK293 cells underscore the potential of DGN@CS-CNO in mitigating cell death provoked by protein aggregation. This effect is achieved by ameliorating ROS-mediated inflammation and countering mitochondrial dysfunction, as evidenced by alterations in TNFα, TLR4, and MT-CO1 protein expression. Western blot analyses reveal that the gradual and sustained release of DGN from DGN@CS-CNO induces autophagy, a pivotal process in dismantling intracellular amyloid deposits. In summary, this study not only illuminates a path forward but also presents a compelling case for the utilization of phytosteroid as a formidable strategy against neuroinflammation incited by protein aggregation.
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Affiliation(s)
- Syed M S Abidi
- Biotechnology Division, CSIR-Institute of Himalayan Bioresource Technology, Palampur, H.P. 176061, India; Academy of Scientific & Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Ashish K Shukla
- Biotechnology Division, CSIR-Institute of Himalayan Bioresource Technology, Palampur, H.P. 176061, India; Academy of Scientific & Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Shiwani Randhawa
- Biotechnology Division, CSIR-Institute of Himalayan Bioresource Technology, Palampur, H.P. 176061, India; Academy of Scientific & Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Manik Bathla
- Biotechnology Division, CSIR-Institute of Himalayan Bioresource Technology, Palampur, H.P. 176061, India; Academy of Scientific & Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Amitabha Acharya
- Biotechnology Division, CSIR-Institute of Himalayan Bioresource Technology, Palampur, H.P. 176061, India; Academy of Scientific & Innovative Research (AcSIR), Ghaziabad 201002, India.
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Azargoonjahromi A, Abutalebian F, Hoseinpour F. The role of resveratrol in neurogenesis: a systematic review. Nutr Rev 2024:nuae025. [PMID: 38511504 DOI: 10.1093/nutrit/nuae025] [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: 03/22/2024] Open
Abstract
CONTEXT Resveratrol (RV) is a natural compound found in grapes, wine, berries, and peanuts and has potential health benefits-namely, neurogenesis improvement. Neurogenesis, which is the process through which new neurons or nerve cells are generated in the brain, occurs in the subventricular zone and hippocampus and is influenced by various factors. RV has been shown to increase neural stem cell proliferation and survival, improving cognitive function in hippocampus-dependent tasks. Thus, to provide a convergent and unbiased conclusion of the available evidence on the correlation between the RV and neurogenesis, a systematic review needs to be undertaken meticulously and with appropriate attention. OBJECTIVE This study aimed to systematically review any potential connection between the RV and neurogenesis in animal models. DATA SOURCES AND EXTRACTION Based on the particular selection criteria, 8 original animal studies that investigated the relationship between RV and neurogenesis were included. Studies written in English and published in peer-reviewed journals with no restrictions on the starting date of publication on August 17, 2023, were searched in the Google Scholar and PubMed databases. Furthermore, data were extracted and analyzed independently by 2 researchers and then reviewed by a third researcher, and discrepancies were resolved by consensus. This project followed PRISMA reporting standards. DATA ANALYSIS In the studies analyzed in this review, there is a definite correlation between RV and neurogenesis, meaning that RV intake, irrespective of the mechanisms thereof, can boost neurogenesis in both the subventricular zone and hippocampus. CONCLUSION This finding, albeit with some limitations, provides a plausible indication of RV's beneficial function in neurogenesis. Indeed, RV intake may result in neurogenesis benefits-namely, cognitive function, mood regulation, stress resilience, and neuroprotection, potentially preventing cognitive decline.
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Affiliation(s)
| | - Fatemeh Abutalebian
- Department of Biotechnology and Medicine, Islamic Azad University of Tehran Central Branch, Tehran, Iran
| | - Fatemeh Hoseinpour
- Department of Occupational Therapy, Semnan University of Medical Sciences and Health Services, Semnan, Iran
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Ayaz M, Mosa OF, Nawaz A, Hamdoon AAE, Elkhalifa MEM, Sadiq A, Ullah F, Ahmed A, Kabra A, Khan H, Murthy HCA. Neuroprotective potentials of Lead phytochemicals against Alzheimer's disease with focus on oxidative stress-mediated signaling pathways: Pharmacokinetic challenges, target specificity, clinical trials and future perspectives. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2024; 124:155272. [PMID: 38181530 DOI: 10.1016/j.phymed.2023.155272] [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: 04/04/2023] [Revised: 11/05/2023] [Accepted: 12/10/2023] [Indexed: 01/07/2024]
Abstract
BACKGROUND Alzheimer's diseases (AD) and dementia are among the highly prevalent neurological disorders characterized by deposition of beta amyloid (Aβ) plaques, dense deposits of highly phosphorylated tau proteins, insufficiency of acetylcholine (ACh) and imbalance in glutamatergic system. Patients typically experience cognitive, behavioral alterations and are unable to perform their routine activities. Evidence also suggests that inflammatory processes including excessive microglia activation, high expression of inflammatory cytokines and release of free radicals. Thus, targeting inflammatory pathways beside other targets might be the key factors to control- disease symptoms and progression. PURPOSE This review is aimed to highlight the mechanisms and pathways involved in the neuroprotective potentials of lead phytochemicals. Further to provide updates regarding challenges associated with their use and their progress into clinical trials as potential lead compounds. METHODS Most recent scientific literature on pre-clinical and clinical data published in quality journals especially on the lead phytochemicals including curcumin, catechins, quercetin, resveratrol, genistein and apigenin was collected using SciFinder, PubMed, Google Scholar, Web of Science, JSTOR, EBSCO, Scopus and other related web sources. RESULTS Literature review indicated that the drug discovery against AD is insufficient and only few drugs are clinically approved which have limited efficacy. Among the therapeutic options, natural products have got tremendous attraction owing to their molecular diversity, their safety and efficacy. Research suggest that natural products can delay the disease onset, reduce its progression and regenerate the damage via their anti-amyloid, anti-inflammatory and antioxidant potentials. These agents regulate the pathways involved in the release of neurotrophins which are implicated in neuronal survival and function. Highly potential lead phytochemicals including curcumin, catechins, quercetin, resveratrol, genistein and apigenin regulate neuroprotective signaling pathways implicated in neurotrophins-mediated activation of tropomyosin receptor kinase (Trk) and p75 neurotrophins receptor (p75NTR) family receptors. CONCLUSIONS Phytochemicals especially phenolic compounds were identified as highly potential molecules which ameliorate oxidative stress induced neurodegeneration, reduce Aβ load and inhibit vital enzymes. Yet their clinical efficacy and bioavailability are the major challenges which need further interventions for more effective therapeutic outcomes.
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Affiliation(s)
- Muhammad Ayaz
- Department of Pharmacy, Faculty of Biological Sciences, University of Malakand, Chakdara, 18000 Dir (L), KP, Pakistan.
| | - Osama F Mosa
- Public health Department, Health Sciences College at Lieth, Umm Al Qura University, Makkah, KSA
| | - Asif Nawaz
- Department of Pharmacy, Faculty of Biological Sciences, University of Malakand, Chakdara, 18000 Dir (L), KP, Pakistan
| | - Alashary Adam Eisa Hamdoon
- Public health Department, Health Sciences College at Lieth, Umm Al Qura University, Makkah, KSA; University of Khartoum, Faculty of Public and Environmental Health, Sudan
| | - Modawy Elnour Modawy Elkhalifa
- Public health Department, Health Sciences College at Lieth, Umm Al Qura University, Makkah, KSA; University of Khartoum, Faculty of Public and Environmental Health, Sudan
| | - Abdul Sadiq
- Department of Pharmacy, Faculty of Biological Sciences, University of Malakand, Chakdara, 18000 Dir (L), KP, Pakistan
| | - Farhat Ullah
- Department of Pharmacy, Faculty of Biological Sciences, University of Malakand, Chakdara, 18000 Dir (L), KP, Pakistan
| | - Alshebli Ahmed
- Public health Department, Health Sciences College at Lieth, Umm Al Qura University, Makkah, KSA; University of Khartoum, Faculty of Public and Environmental Health, Sudan
| | - Atul Kabra
- University Institute of Pharma Sciences, Chandigarh University, Gharuan, Mohali, Punjab, India
| | - Haroon Khan
- Department of Pharmacy, Abdul Wali Khan University Mardan, Pakistan
| | - H C Ananda Murthy
- Department of Applied Chemistry, School of Applied Natural Science, Adama Science and Technology University, P O Box 1888, Adama, Ethiopia; Department of Prosthodontics, Saveetha Dental College & Hospital, Saveetha Institute of Medical and technical science (SIMATS), Saveetha University, Chennai-600077, Tamil Nadu, India
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Mamun AA, Shao C, Geng P, Wang S, Xiao J. Polyphenols Targeting NF-κB Pathway in Neurological Disorders: What We Know So Far? Int J Biol Sci 2024; 20:1332-1355. [PMID: 38385077 PMCID: PMC10878147 DOI: 10.7150/ijbs.90982] [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: 10/10/2023] [Accepted: 01/19/2024] [Indexed: 02/23/2024] Open
Abstract
Polyphenolic compounds have shown promising neuroprotective properties, making them a valuable resource for identifying prospective drug candidates to treat several neurological disorders (NDs). Numerous studies have reported that polyphenols can disrupt the nuclear factor kappa B(NF-κB) pathway by inhibiting the phosphorylation or ubiquitination of signaling molecules, which further prevents the degradation of IκB. Additionally, they prevent NF-κB translocation to the nucleus and pro-inflammatory cytokine production. Polyphenols such as curcumin, resveratrol, and pterostilbene had significant inhibitory effects on NF-κB, making them promising candidates for treating NDs. Recent experimental findings suggest that polyphenols possess a wide range of pharmacological properties. Notably, much attention has been directed towards their potential therapeutic effects in NDs such as Alzheimer's disease (AD), Parkinson's disease (PD), cerebral ischemia, anxiety, depression, autism, and spinal cord injury (SCI). Much preclinical data supporting the neurotherapeutic benefits of polyphenols has been developed. Nevertheless, this study has described the significance of polyphenols as potential neurotherapeutic agents, specifically emphasizing their impact on the NF-κB pathway. This article offers a comprehensive analysis of the involvement of polyphenols in NDs, including both preclinical and clinical perspectives.
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Affiliation(s)
- Abdullah Al Mamun
- Central Laboratory of The Sixth Affiliated Hospital of Wenzhou Medical University, Lishui People's Hospital, Lishui City, Zhejiang 323000, China
- Molecular Pharmacology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou 325000, China
| | - Chuxiao Shao
- Central Laboratory of The Sixth Affiliated Hospital of Wenzhou Medical University, Lishui People's Hospital, Lishui City, Zhejiang 323000, China
| | - Peiwu Geng
- Central Laboratory of The Sixth Affiliated Hospital of Wenzhou Medical University, Lishui People's Hospital, Lishui City, Zhejiang 323000, China
| | - Shuanghua Wang
- Central Laboratory of The Sixth Affiliated Hospital of Wenzhou Medical University, Lishui People's Hospital, Lishui City, Zhejiang 323000, China
| | - Jian Xiao
- Central Laboratory of The Sixth Affiliated Hospital of Wenzhou Medical University, Lishui People's Hospital, Lishui City, Zhejiang 323000, China
- Molecular Pharmacology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou 325000, China
- Department of Wound Healing, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, China
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Focaccetti C, Palumbo C, Benvenuto M, Carrano R, Melaiu O, Nardozi D, Angiolini V, Lucarini V, Kërpi B, Masuelli L, Cifaldi L, Bei R. The Combination of Bioavailable Concentrations of Curcumin and Resveratrol Shapes Immune Responses While Retaining the Ability to Reduce Cancer Cell Survival. Int J Mol Sci 2023; 25:232. [PMID: 38203402 PMCID: PMC10779126 DOI: 10.3390/ijms25010232] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Revised: 12/15/2023] [Accepted: 12/21/2023] [Indexed: 01/12/2024] Open
Abstract
The polyphenols Curcumin (CUR) and Resveratrol (RES) are widely described for their antitumoral effects. However, their low bioavailability is a drawback for their use in therapy. The aim of this study was to explore whether CUR and RES, used at a bioavailable concentration, could modulate immune responses while retaining antitumor activity and to determine whether CUR and RES effects on the immune responses of peripheral blood mononuclear cells (PBMCs) and tumor growth inhibition could be improved by their combination. We demonstrate that the low-dose combination of CUR and RES reduced the survival of cancer cell lines but had no effect on the viability of PBMCs. Although following CUR + RES treatment T lymphocytes showed an enhanced activated state, RES counteracted the increased IFN-γ expression induced by CUR in T cells and the polyphenol combination increased IL-10 production by T regulatory cells. On the other hand, the combined treatment enhanced NK cell activity through the up- and downregulation of activating and inhibitory receptors and increased CD68 expression levels on monocytes/macrophages. Overall, our results indicate that the combination of CUR and RES at low doses differentially shapes immune cells while retaining antitumor activity, support the use of this polyphenol combinations in anticancer therapy and suggest its possible application as adjuvant for NK cell-based immunotherapies.
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Affiliation(s)
- Chiara Focaccetti
- Department of Clinical Sciences and Translational Medicine, University of Rome “Tor Vergata”, 00133 Rome, Italy; (C.F.); (C.P.); (M.B.); (R.C.); (O.M.); (D.N.); (L.C.)
| | - Camilla Palumbo
- Department of Clinical Sciences and Translational Medicine, University of Rome “Tor Vergata”, 00133 Rome, Italy; (C.F.); (C.P.); (M.B.); (R.C.); (O.M.); (D.N.); (L.C.)
| | - Monica Benvenuto
- Department of Clinical Sciences and Translational Medicine, University of Rome “Tor Vergata”, 00133 Rome, Italy; (C.F.); (C.P.); (M.B.); (R.C.); (O.M.); (D.N.); (L.C.)
- Departmental Faculty of Medicine and Surgery, Saint Camillus International University of Health and Medical Sciences, 00131 Rome, Italy
| | - Raffaele Carrano
- Department of Clinical Sciences and Translational Medicine, University of Rome “Tor Vergata”, 00133 Rome, Italy; (C.F.); (C.P.); (M.B.); (R.C.); (O.M.); (D.N.); (L.C.)
| | - Ombretta Melaiu
- Department of Clinical Sciences and Translational Medicine, University of Rome “Tor Vergata”, 00133 Rome, Italy; (C.F.); (C.P.); (M.B.); (R.C.); (O.M.); (D.N.); (L.C.)
| | - Daniela Nardozi
- Department of Clinical Sciences and Translational Medicine, University of Rome “Tor Vergata”, 00133 Rome, Italy; (C.F.); (C.P.); (M.B.); (R.C.); (O.M.); (D.N.); (L.C.)
| | - Valentina Angiolini
- Department of Experimental Medicine, University of Rome “Sapienza”, 00161 Rome, Italy; (V.A.); (V.L.); (L.M.)
| | - Valeria Lucarini
- Department of Experimental Medicine, University of Rome “Sapienza”, 00161 Rome, Italy; (V.A.); (V.L.); (L.M.)
| | - Bora Kërpi
- Department of Biomedicine, Catholic University ‘Our Lady of Good Counsel’, 1000 Tirana, Albania;
| | - Laura Masuelli
- Department of Experimental Medicine, University of Rome “Sapienza”, 00161 Rome, Italy; (V.A.); (V.L.); (L.M.)
| | - Loredana Cifaldi
- Department of Clinical Sciences and Translational Medicine, University of Rome “Tor Vergata”, 00133 Rome, Italy; (C.F.); (C.P.); (M.B.); (R.C.); (O.M.); (D.N.); (L.C.)
| | - Roberto Bei
- Department of Clinical Sciences and Translational Medicine, University of Rome “Tor Vergata”, 00133 Rome, Italy; (C.F.); (C.P.); (M.B.); (R.C.); (O.M.); (D.N.); (L.C.)
- Faculty of Medicine and Surgery, Catholic University ‘Our Lady of Good Counsel’, 1000 Tirana, Albania
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Ortega-Hernández E, Camero-Maldonado AV, Acevedo-Pacheco L, Jacobo-Velázquez DA, Antunes-Ricardo M. Immunomodulatory and Antioxidant Effects of Spray-Dried Encapsulated Kale Sprouts after In Vitro Gastrointestinal Digestion. Foods 2023; 12:foods12112149. [PMID: 37297394 DOI: 10.3390/foods12112149] [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: 04/25/2023] [Revised: 05/24/2023] [Accepted: 05/24/2023] [Indexed: 06/12/2023] Open
Abstract
The health-related compounds present in kale are vulnerable to the digestive process or storage conditions. Encapsulation has become an alternative for their protection and takes advantage of their biological activity. In this study, 7-day-old Red Russian kale sprouts grown in the presence of selenium (Se) and sulfur (S) were spray-dried with maltodextrin to assess their capacity to protect kale sprout phytochemicals from degradation during the digestion process. Analyses were conducted on the encapsulation efficiency, particle morphology, and storage stability. Mouse macrophages (Raw 264.7) and human intestinal cells (Caco-2) were used to assess the effect of the intestinal-digested fraction of the encapsulated kale sprout extracts on the cellular antioxidant capacity, the production of nitric oxide (NOx), and the concentrations of different cytokines as indicators of the immunological response. The highest encapsulation efficiency was observed in capsules with a 50:50 proportion of the hydroalcoholic extract of kale and maltodextrin. Gastrointestinal digestion affected compounds' content in encapsulated and non-encapsulated kale sprouts. Spray-dried encapsulation reduced the phytochemicals' degradation during storage, and the kale sprouts germinated with S and Se showed less degradation of lutein (35.6%, 28.2%), glucosinolates (15.4%, 18.9%), and phenolic compounds (20.3%, 25.7%), compared to non-encapsulated ones, respectively. S-encapsulates exerted the highest cellular antioxidant activity (94.2%) and immunomodulatory activity by stimulating IL-10 production (88.9%) and COX-2 (84.1%) and NOx (92.2%) inhibition. Thus, encapsulation is an effective method to improve kale sprout phytochemicals' stability and bioactivity during storage and metabolism.
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Affiliation(s)
- Erika Ortega-Hernández
- Tecnologico de Monterrey, Escuela de Ingeniería y Ciencias, Centro de Biotecnología-FEMSA, Av. Eugenio Garza Sada 2501 Sur, Monterrey 64849, Mexico
- Tecnologico de Monterrey, Institute for Obesity Research, Ave. Eugenio Garza Sada 2501 Sur, Monterrey 64849, Mexico
| | - Ana Victoria Camero-Maldonado
- Tecnologico de Monterrey, Escuela de Medicina y Ciencias de la Salud, Av. Ignacio Morones Prieto 3000, Monterrey 64710, Mexico
| | - Laura Acevedo-Pacheco
- Tecnologico de Monterrey, Escuela de Ingeniería y Ciencias, Centro de Biotecnología-FEMSA, Av. Eugenio Garza Sada 2501 Sur, Monterrey 64849, Mexico
| | - Daniel A Jacobo-Velázquez
- Tecnologico de Monterrey, Escuela de Ingeniería y Ciencias, Ave. General Ramón Corona 2514, Zapopan 45201, Mexico
- Tecnologico de Monterrey, Institute for Obesity Research, Ave. General Ramón Corona 2514, Zapopan 45201, Mexico
| | - Marilena Antunes-Ricardo
- Tecnologico de Monterrey, Escuela de Ingeniería y Ciencias, Centro de Biotecnología-FEMSA, Av. Eugenio Garza Sada 2501 Sur, Monterrey 64849, Mexico
- Tecnologico de Monterrey, Institute for Obesity Research, Ave. Eugenio Garza Sada 2501 Sur, Monterrey 64849, Mexico
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Ri MH, Xing Y, Zuo HX, Li MY, Jin HL, Ma J, Jin X. Regulatory mechanisms of natural compounds from traditional Chinese herbal medicines on the microglial response in ischemic stroke. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2023; 116:154889. [PMID: 37262999 DOI: 10.1016/j.phymed.2023.154889] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2022] [Revised: 04/12/2023] [Accepted: 05/16/2023] [Indexed: 06/03/2023]
Abstract
BACKGROUND Development of clinically effective neuroprotective agents for stroke therapy is still a challenging task. Microglia play a critical role in brain injury and recovery after ischemic stroke. Traditional Chinese herbal medicines (TCHMs) are based on a unique therapeutic principle, have various formulas, and have long been widely used to treat stroke. Therefore, the active compounds in TCHMs and their underlying mechanisms of action are attracting increasing attention in the field of stroke drug development. PURPOSE To summarize the regulatory mechanisms of TCHM-derived natural compounds on the microglial response in animal models of ischemic stroke. METHODS We searched studies published until 10 April 2023 in the Web of Science, PubMed, and ScienceDirect using the following keywords: natural compounds, natural products or phytochemicals, traditional Chinese Medicine or Chinese herbal medicine, microglia, and ischemic stroke. This review was prepared according to PRISMA (Preferred Reporting Item for Systematic Reviews and Meta-Analysis) guidelines. RESULTS Natural compounds derived from TCHMs can attenuate the M1 phenotype of microglia, which is involved in the detrimental inflammatory response, via inhibition of NF-κB, MAPKs, JAK/STAT, Notch, TLR4, P2X7R, CX3CR1, IL-17RA, the NLRP3 inflammasome, and pro-oxidant enzymes. Additionally, the neuroprotective response of microglia with the M2 phenotype can be enhanced by activating Nrf2/HO-1, PI3K/AKT, AMPK, PPARγ, SIRT1, CB2R, TREM2, nAChR, and IL-33/ST2. Several clinical trials showed that TCHM-derived natural compounds that regulate microglial responses have significant and safe therapeutic effects, but further well-designed clinical studies are needed. CONCLUSIONS Further research regarding the direct targets and potential pleiotropic or synergistic effects of natural compounds would provide a more reasonable approach for regulation of the microglial response with the possibility of successful stroke drug development.
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Affiliation(s)
- Myong Hak Ri
- Key Laboratory of Natural Medicines of the Changbai Mountain, Ministry of Education, Molecular Medicine Research Center, College of Pharmacy, Yanbian University, Yanji 133002, Jilin Province, China; Faculty of Life Science, Kim Il Sung University, Pyongyang, Democratic People's Republic of Korea
| | - Yue Xing
- Key Laboratory of Natural Medicines of the Changbai Mountain, Ministry of Education, Molecular Medicine Research Center, College of Pharmacy, Yanbian University, Yanji 133002, Jilin Province, China
| | - Hong Xiang Zuo
- Key Laboratory of Natural Medicines of the Changbai Mountain, Ministry of Education, Molecular Medicine Research Center, College of Pharmacy, Yanbian University, Yanji 133002, Jilin Province, China
| | - Ming Yue Li
- Key Laboratory of Natural Medicines of the Changbai Mountain, Ministry of Education, Molecular Medicine Research Center, College of Pharmacy, Yanbian University, Yanji 133002, Jilin Province, China
| | - Hong Lan Jin
- Key Laboratory of Natural Medicines of the Changbai Mountain, Ministry of Education, Molecular Medicine Research Center, College of Pharmacy, Yanbian University, Yanji 133002, Jilin Province, China
| | - Juan Ma
- Key Laboratory of Natural Medicines of the Changbai Mountain, Ministry of Education, Molecular Medicine Research Center, College of Pharmacy, Yanbian University, Yanji 133002, Jilin Province, China.
| | - Xuejun Jin
- Key Laboratory of Natural Medicines of the Changbai Mountain, Ministry of Education, Molecular Medicine Research Center, College of Pharmacy, Yanbian University, Yanji 133002, Jilin Province, China.
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Delage P, Ségrestin B, Seyssel K, Chanon S, Vieille-Marchiset A, Durand A, Nemeth A, Métairon S, Charpagne A, Descombes P, Hager J, Laville M, Vidal H, Meugnier E. Adipose tissue angiogenesis genes are down-regulated by grape polyphenols supplementation during a human overfeeding trial. J Nutr Biochem 2023; 117:109334. [PMID: 36965784 DOI: 10.1016/j.jnutbio.2023.109334] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Revised: 01/16/2023] [Accepted: 03/18/2023] [Indexed: 03/27/2023]
Abstract
The adaptive response to overfeeding is associated with profound modifications of gene expression in adipose tissue to support lipid storage and weight gain. The objective of this study was to assess in healthy lean men whether a supplementation with polyphenols could interact with these molecular adaptations. Abdominal subcutaneous adipose tissue biopsies were sampled from 42 subjects participating to an overfeeding protocol providing an excess of 50% of their total energy expenditure for 31 days, and who were supplemented with 2 g/day of grape polyphenols or a placebo. Gene expression profiling was performed by RNA sequencing. Overfeeding led to a modification of the expression of 163 and 352 genes in the placebo and polyphenol groups, respectively. The GO functions of these genes were mostly involved in lipid metabolism, followed by genes involved in adipose tissue remodeling and expansion. In response to overfeeding, 812 genes were differentially regulated between groups. Among them, a set of 41 genes were related to angiogenesis and were downregulated in the polyphenol group. Immunohistochemistry targeting PECAM1, as endothelial cell marker, confirmed reduced angiogenesis in this group. Finally, quercetin and isorhamnetin, two polyphenol species enriched in the plasma of the volunteers submitted to the polyphenols, were found to inhibit human umbilical vein endothelial cells migration in vitro. Polyphenol supplementation do not prevent the regulation of genes related to lipid metabolism in human adipose tissue during overfeeding, but impact the angiogenesis pathways. This may potentially contribute to a protection against adipose tissue expansion during dynamic phase of weight gain.
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Affiliation(s)
- Pauline Delage
- CarMeN Laboratory, INSERM, INRAe, Claude Bernard Lyon 1 University, Pierre-Bénite, F-69310, France.
| | - Bérénice Ségrestin
- CarMeN Laboratory, INSERM, INRAe, Claude Bernard Lyon 1 University, Pierre-Bénite, F-69310, France; CRNH-RA, INSERM, INRAe, Claude Bernard Lyon 1 University, Hospices Civils de Lyon, Pierre-Bénite, F-69310, France; Centre Hospitalier Lyon-Sud, Service d'Endocrinologie Diabète Nutrition Lyon, Hospices Civils de Lyon, Pierre-Bénite, F-69100, France.
| | - Kévin Seyssel
- CarMeN Laboratory, INSERM, INRAe, Claude Bernard Lyon 1 University, Pierre-Bénite, F-69310, France; CRNH-RA, INSERM, INRAe, Claude Bernard Lyon 1 University, Hospices Civils de Lyon, Pierre-Bénite, F-69310, France.
| | - Stéphanie Chanon
- CarMeN Laboratory, INSERM, INRAe, Claude Bernard Lyon 1 University, Pierre-Bénite, F-69310, France.
| | | | - Annie Durand
- CarMeN Laboratory, INSERM, INRAe, Claude Bernard Lyon 1 University, Pierre-Bénite, F-69310, France.
| | - Angéline Nemeth
- CNRS, INSERM, CREATIS, Université de Lyon, INSA-Lyon, Claude Bernard Lyon 1 University, UJM-Saint Etienne, Lyon, France.
| | | | - Aline Charpagne
- Nestlé Research, EPFL Innovation Park, H, Lausanne, Switzerland.
| | | | - Jörg Hager
- Nestlé Research, EPFL Innovation Park, H, Lausanne, Switzerland.
| | - Martine Laville
- CarMeN Laboratory, INSERM, INRAe, Claude Bernard Lyon 1 University, Pierre-Bénite, F-69310, France; CRNH-RA, INSERM, INRAe, Claude Bernard Lyon 1 University, Hospices Civils de Lyon, Pierre-Bénite, F-69310, France; Centre Hospitalier Lyon-Sud, Service d'Endocrinologie Diabète Nutrition Lyon, Hospices Civils de Lyon, Pierre-Bénite, F-69100, France.
| | - Hubert Vidal
- CarMeN Laboratory, INSERM, INRAe, Claude Bernard Lyon 1 University, Pierre-Bénite, F-69310, France; CRNH-RA, INSERM, INRAe, Claude Bernard Lyon 1 University, Hospices Civils de Lyon, Pierre-Bénite, F-69310, France.
| | - Emmanuelle Meugnier
- CarMeN Laboratory, INSERM, INRAe, Claude Bernard Lyon 1 University, Pierre-Bénite, F-69310, France.
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The preventive use of resveratrol increases its antioxidant effect by SIRT1 and subclinical anti-inflammatory action in Neuro-2A cells. In Vitro Cell Dev Biol Anim 2022; 58:979-986. [PMID: 36481976 DOI: 10.1007/s11626-022-00719-1] [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: 06/02/2022] [Accepted: 08/09/2022] [Indexed: 12/13/2022]
Abstract
Currently, the important role of oxidative stress in the aging process and in neurodegenerative diseases has been highlighted, suggesting the beneficial effect of antioxidants as adjuvant therapy. Resveratrol (RSV) is a polyphenolic compound used in the clinic and has been shown as an antioxidant and anti-inflammatory. Therefore, the objective was to verify neuroprotective and modulating effects of RSV on N2-A cells, pre or post inserted into an oxidative stress environment. For this, two treatment conditions were established: pre-stimulus and post-stimulus. The analysis of AMPK and SIRT1 cell signaling pathways was performed through the chemiluminescence assay using the dorsomorphin and EX527 inhibitors, respectively. The inflammatory profile was also evaluated in these neural cells, through the levels of IL-6, TNF, and IL-10. We observed that RSV in N2-A cells has anti-inflammatory effect and antioxidant property and it mechanism is dependent on the SIRT1 signaling pathway. RSV effects occurs most markedly when cells have been pre-stimulated before inducing an oxidative stress environment. These results are important for conducting more adequate protocols in the medical and nutritional clinic.
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12
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Abstract
Parkinson’s disease (PD) is a complex, chronic, and progressive neurodegenerative disease that is characterized by irreversible dopaminergic neuronal loss in the substantia nigra. Alpha-synuclein is normally a synaptic protein that plays a key role in PD due to pathological accumulation as oligomers or fibrils. Clustered alpha-synuclein binds to the Toll-like receptors and activates the microglia, which initiates a process that continues with pro-inflammatory cytokine production and secretion. Pro-inflammatory cytokine overproduction and secretion induce cell death and accelerate PD progression. Microglia are found in a resting state in physiological conditions. Microglia became activated by stimulating Toll-like receptors on it under pathological conditions, such as alpha-synuclein aggregation, environmental toxins, or oxidative stress. The interaction between Toll-like receptors and its downstream pathway triggers an activation series, leads to nuclear factor-kappa B activation, initiates the inflammasome formation, and increases cytokine levels. This consecutive inflammatory process leads to dopaminergic cell damage and cell death. Microglia become overactive in response to chronic inflammation, which is observed in PD and causes excessive cytotoxic factor production, such as reactive oxidase, nitric oxide, and tumor necrosis factor-alpha. This inflammatory process contributes to the exacerbation of pathology by triggering neuronal damage or death. Current treatments, such as dopaminergic agonists, anticholinergics, or monoamine oxidase inhibitors alleviate PD symptoms, but they can not stop the disease progression. Finding a radical treatment option or stopping the progression is essential when considering that PD is the second most reported neurodegenerative disorder. Many cytokines are released during inflammation, and they can start the phagocytic process, which caused the degradation of infected cells along with healthy ones. Therefore, targeting the pathological mechanisms, such as microglial activation, mitochondrial dysfunction, and oxidative stress, that should be involved in the treatment program is important. Neuroinflammation is one of the key factors involved in PD pathogenesis as well as alpha-synuclein accumulation, synaptic dysfunction, or dopaminergic neuronal loss, especially in the substantia nigra. Therefore, evaluating the therapeutic efficiency of the mechanisms is important, such as microglial activation and nuclear factor-kappa B pathway or inflammasome formation inhibition, and cytokine release interruption against neuroinflammation may create new treatment possibilities for PD. This study examined the pathological relation between PD and neuroinflammation, and targeting neuroinflammation as an opportunity for PD treatments, such as Toll-like receptor antagonists, NOD-like receptor family pyrin domain containing-3 inflammasome inhibitors, cytokine inhibitors, peroxisome proliferator-activated receptor-γ agonists, reactive oxygen species inhibitors, and nonsteroidal anti-inflammatory drugs.
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13
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Regulation of DAPK1 by Natural Products: An Important Target in Treatment of Stroke. Neurochem Res 2022; 47:2142-2157. [PMID: 35674928 DOI: 10.1007/s11064-022-03628-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Revised: 05/01/2022] [Accepted: 05/05/2022] [Indexed: 12/12/2022]
Abstract
Stroke is a sudden neurological disorder that occurs due to impaired blood flow to an area of the brain. Stroke can be caused by the blockage or rupture of a blood vessel in the brain, called ischemic stroke and hemorrhagic stroke, respectively. Stroke is more common in men than women. Atrial fibrillation, hypertension, kidney disease, high cholesterol and lipids, genetic predisposition, inactivity, poor nutrition, diabetes mellitus, family history and smoking are factors that increase the risk of stroke. Restoring blood flow by repositioning blocked arteries using thrombolytic agents or endovascular therapy are the most effective treatments for stroke. However, restoring circulation after thrombolysis can cause fatal edema or intracranial hemorrhage, and worsen brain damage in a process known as ischemia-reperfusion injury. Therefore, there is a pressing need to find and develop more effective treatments for stroke. In the past, the first choice of treatment was based on natural compounds. Natural compounds are able to reduce the symptoms and reduce various diseases including stroke that attract the attention of the pharmaceutical industry. Nowadays, as a result of the numerous studies carried out in the field of herbal medicine, many useful and valuable effects of plants have been identified. The death-associated protein kinase (DAPK) family is one of the vital families of serine/threonine kinases involved in the regulation of some biological functions in human cells. DAPK1 is the most studied kinase within the DAPKs family as it is involved in neuronal and recovery processes. Dysregulation of DAPK1 in the brain is involved in the developing neurological diseases such as stroke. Natural products can function in a variety of ways, including reducing cerebral edema, reducing brain endothelial cell death, and inhibiting TNFα and interleukin-1β (IL-1β) through regulating the DAPK1 signal against stroke. Due to the role of DAPK1 in neurological disorders, the aim of this article was to investigate the role of DAPK1 in stroke and its modulation by natural compounds.
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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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15
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Resveratrol and neuroprotection: an insight into prospective therapeutic approaches against Alzheimer's disease from bench to bedside. Mol Neurobiol 2022; 59:4384-4404. [PMID: 35545730 DOI: 10.1007/s12035-022-02859-7] [Citation(s) in RCA: 30] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Accepted: 04/28/2022] [Indexed: 02/07/2023]
Abstract
Alzheimer's disease (AD) is the most common cause of dementia and cognitive impairment; yet, there is currently no treatment. A buildup of Aβ, tau protein phosphorylation, oxidative stress, and inflammation in AD is pathogenic. The accumulation of amyloid-beta (Aβ) peptides in these neurocognitive areas is a significant characteristic of the disease. Therefore, inhibiting Aβ peptide aggregation has been proposed as the critical therapeutic approach for AD treatment. Resveratrol has been demonstrated in multiple studies to have a neuroprotective, anti-inflammatory, and antioxidant characteristic and the ability to minimize Aβ peptides aggregation and toxicity in the hippocampus of Alzheimer's patients, stimulating neurogenesis and inhibiting hippocampal degeneration. Furthermore, resveratrol's antioxidant effect promotes neuronal development by activating the silent information regulator-1 (SIRT1), which can protect against the detrimental effects of oxidative stress. Resveratrol-induced SIRT1 activation is becoming more crucial in developing novel therapeutic options for AD and other diseases that have neurodegenerative characteristics. This review highlighted a better knowledge of resveratrol's mechanism of action and its promising therapeutic efficacy in treating AD. We also highlighted the therapeutic potential of resveratrol as an AD therapeutic agent, which is effective against neurodegenerative disorders.
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16
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Amintas S, Dupin C, Boutin J, Beaumont P, Moreau-Gaudry F, Bedel A, Krisa S, Vendrely V, Dabernat S. Bioactive food components for colorectal cancer prevention and treatment: A good match. Crit Rev Food Sci Nutr 2022; 63:6615-6629. [PMID: 35128990 DOI: 10.1080/10408398.2022.2036095] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Colorectal cancer (CRC) is the third most frequent cancer worldwide, accounts for about 10% of the total cancer cases, and ranks as the second cause of death by cancer. CRC is more prevalent in developed countries in close causal relation with occidental diets. Due to anatomy, the diet has a strong impact on CRC. High contents in meat are acknowledged risk factors whereas a diet rich in fruits and vegetables is an established CRC protective factor. Fruits and vegetables contain numerous Bioactive Food Components (BFCs), physiologically active food compounds, beneficial on health. Preventive and therapeutic benefits of BFCs in cancer have increasingly been reported over the past 20 years. BFCs show both chemopreventive and anti-tumor properties in CRC but more interestingly, abundant research describes BFCs as enhancers of conventional cancer treatments. Despite these promising results, their clinical transferability is slowed down by bioavailability interrogations and their poorly understood hormetic effect. In this review, we would like to reposition BFCs as well-fitted for applications in CRC. We provide a synthetic overview of trustworthy BFC applications in CRC, with a special highlight on combinatory approaches and conventional cancer treatment potentiation strategies.
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Affiliation(s)
- Samuel Amintas
- Bordeaux University, Bordeaux, France
- INSERM U1312, BoRdeaux institute In onCology - BRIC, Bordeaux, France
- Tumor Biology and Tumor Bank Laboratory, Bordeaux University Hospital, Bordeaux, France
| | - Charles Dupin
- Bordeaux University, Bordeaux, France
- INSERM U1312, BoRdeaux institute In onCology - BRIC, Bordeaux, France
- Radiotherapy Department, Bordeaux University Hospital, Bordeaux, France
| | - Julian Boutin
- Bordeaux University, Bordeaux, France
- INSERM U1312, BoRdeaux institute In onCology - BRIC, Bordeaux, France
- Biochemistry Laboratory, Bordeaux. University Hospital, Bordeaux, France
| | | | - François Moreau-Gaudry
- Bordeaux University, Bordeaux, France
- INSERM U1312, BoRdeaux institute In onCology - BRIC, Bordeaux, France
- Biochemistry Laboratory, Bordeaux. University Hospital, Bordeaux, France
| | - Aurélie Bedel
- Bordeaux University, Bordeaux, France
- INSERM U1312, BoRdeaux institute In onCology - BRIC, Bordeaux, France
- Biochemistry Laboratory, Bordeaux. University Hospital, Bordeaux, France
| | | | - Véronique Vendrely
- Bordeaux University, Bordeaux, France
- INSERM U1312, BoRdeaux institute In onCology - BRIC, Bordeaux, France
- Radiotherapy Department, Bordeaux University Hospital, Bordeaux, France
| | - Sandrine Dabernat
- Bordeaux University, Bordeaux, France
- INSERM U1312, BoRdeaux institute In onCology - BRIC, Bordeaux, France
- Biochemistry Laboratory, Bordeaux. University Hospital, Bordeaux, France
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Zahedipour F, Hosseini SA, Henney NC, Barreto GE, Sahebkar A. Phytochemicals as inhibitors of tumor necrosis factor alpha and neuroinflammatory responses in neurodegenerative diseases. Neural Regen Res 2022; 17:1675-1684. [PMID: 35017414 PMCID: PMC8820712 DOI: 10.4103/1673-5374.332128] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/06/2022] Open
Abstract
Inflammatory processes and proinflammatory cytokines have a key role in the cellular processes of neurodegenerative diseases and are linked to the pathogenesis of functional and mental health disorders. Tumor necrosis factor alpha has been reported to play a major role in the central nervous system in Alzheimer’s disease, Parkinson’s disease and amyotrophic lateral sclerosis and many other neurodegenerative diseases. Therefore, a potent proinflammatory/proapoptotic tumor necrosis factor alpha could be a strong candidate for targeted therapy. Plant derivatives have now become promising candidates as therapeutic agents because of their antioxidant and chemical characteristics, and anti-inflammatory features. Recently, phytochemicals including flavonoids, terpenoids, alkaloids, and lignans have generated interest as tumor necrosis factor alpha inhibitor candidates for a number of diseases involving inflammation within the nervous system. In this review, we discuss how phytochemicals as tumor necrosis factor alpha inhibitors are a therapeutic strategy targeting neurodegeneration.
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Affiliation(s)
- Fatemeh Zahedipour
- Department of Medical Biotechnology, School of Medicine; Student Research Committee, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Seyede Atefe Hosseini
- Department of Medical Biotechnology, School of Medicine; Student Research Committee, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Neil C Henney
- Pharmacy & Biomolecular Sciences, Liverpool John Moores University, Liverpool, UK
| | - George E Barreto
- Department of Biological Sciences; Health Research Institute, University of Limerick, Limerick, Ireland
| | - Amirhossein Sahebkar
- Applied Biomedical Research Center; Biotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran; Polish Mother's Memorial Hospital Research Institute (PMMHRI), Lodz, Poland; School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
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Li M, Li P, Tang R, Lu H. Resveratrol and its derivates improve inflammatory bowel disease by targeting gut microbiota and inflammatory signaling pathways. FOOD SCIENCE AND HUMAN WELLNESS 2022. [DOI: 10.1016/j.fshw.2021.07.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Rasha F, Mims BM, Castro-Piedras I, Barnes BJ, Grisham MB, Rahman RL, Pruitt K. The Versatility of Sirtuin-1 in Endocrinology and Immunology. Front Cell Dev Biol 2020; 8:589016. [PMID: 33330467 PMCID: PMC7717970 DOI: 10.3389/fcell.2020.589016] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Accepted: 10/27/2020] [Indexed: 12/13/2022] Open
Abstract
Sirtuins belong to the class III family of NAD-dependent histone deacetylases (HDAC) and are involved in diverse physiological processes that range from regulation of metabolism and endocrine function to coordination of immunity and cellular responses to stress. Sirtuin-1 (SIRT1) is the most well-studied family member and has been shown to be critically involved in epigenetics, immunology, and endocrinology. The versatile roles of SIRT1 include regulation of energy sensing metabolic homeostasis, deacetylation of histone and non-histone proteins in numerous tissues, neuro-endocrine regulation via stimulation of hypothalamus-pituitary axes, synthesis and maintenance of reproductive hormones via steroidogenesis, maintenance of innate and adaptive immune system via regulation of T- and B-cell maturation, chronic inflammation and autoimmune diseases. Moreover, SIRT1 is an appealing target in various disease contexts due to the promise of pharmacological and/or natural modulators of SIRT1 activity within the context of endocrine and immune-related disease models. In this review we aim to provide a broad overview on the role of SIRT1 particularly within the context of endocrinology and immunology.
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Affiliation(s)
- Fahmida Rasha
- Department of Immunology and Molecular Microbiology, Texas Tech University Health Sciences Center, Lubbock, TX, United States
| | - Brianyell McDaniel Mims
- Department of Immunology and Molecular Microbiology, Texas Tech University Health Sciences Center, Lubbock, TX, United States
| | - Isabel Castro-Piedras
- Department of Immunology and Molecular Microbiology, Texas Tech University Health Sciences Center, Lubbock, TX, United States
| | - Betsy J. Barnes
- Laboratory of Autoimmune and Cancer Research, Center for Autoimmune Musculoskeletal and Hematopoietic Disease, The Feinstein Institutes for Medical Research, Manhasset, NY, United States
- Department of Molecular Medicine and Department of Pediatrics, Zucker School of Medicine at Hofstra-Northwell, Hempstead, NY, United States
| | - Matthew B. Grisham
- Department of Immunology and Molecular Microbiology, Texas Tech University Health Sciences Center, Lubbock, TX, United States
| | | | - Kevin Pruitt
- Department of Immunology and Molecular Microbiology, Texas Tech University Health Sciences Center, Lubbock, TX, United States
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Luo Z, Yu G, Chen X, Liu Y, Zhou Y, Wang G, Shi Y. Integrated phytochemical analysis based on UHPLC-LTQ-Orbitrap and network pharmacology approaches to explore the potential mechanism of Lycium ruthenicum Murr. for ameliorating Alzheimer's disease. Food Funct 2020; 11:1362-1372. [PMID: 31967149 DOI: 10.1039/c9fo02840d] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Based on compelling experimental and clinical evidence, the fruit of Lycium ruthenicum Murr. (LRM), a unique traditional Tibetan medicine, exerts beneficial effects on ameliorating learning and memory deficits of Alzheimer's disease (AD) and other neurodegenerative disorders. However, the potential active constituents and biological mechanism of LRM are still unknown. In this study, the major chemical constituents of LRM were first analyzed by ultra-high-pressure liquid chromatography coupled with linear ion trap-Orbitrap tandem mass spectrometry (UHPLC-LTQ-Orbitrap). A total of 35 constituents were confirmed or tentatively identified. Furthermore, the network-based pharmacological strategy was applied to clarify the molecular mechanism of LRM on AD based on the identified components. Totally, 143 major targets were screened and supposed to be effective players in alleviating AD. Then, the LRM chemicals-major LRM putative targets-major pathways network was constructed, implying potential biological function of LRM on AD. More importantly, 12 core genes which can be modulated by LRM were identified, and they may play a pivotal role in alleviating some major symptoms of AD. This study provided a scientific basis for further investigation and application of LRM, which demonstrated that the network pharmacology approach could be a powerful way for the mechanistic studies of folk medicines.
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Affiliation(s)
- Zhiqiang Luo
- School of Life Sciences, Beijing University of Chinese Medicine, Beijing 102488, China. and School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 102488, China.
| | - Guohua Yu
- School of Life Sciences, Beijing University of Chinese Medicine, Beijing 102488, China.
| | - Xinjing Chen
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 102488, China.
| | - Yang Liu
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 102488, China.
| | - Yating Zhou
- School of Life Sciences, Beijing University of Chinese Medicine, Beijing 102488, China.
| | - Guopeng Wang
- Zhongcai Health (Beijing) Biological Technology Development Co., Ltd., Beijing 101500, China
| | - Yuanyuan Shi
- School of Life Sciences, Beijing University of Chinese Medicine, Beijing 102488, China.
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Nourbakhsh F, Read MI, Barreto GE, Sahebkar A. Boosting the autophagy-lysosomal pathway by phytochemicals: A potential therapeutic strategy against Alzheimer's disease. IUBMB Life 2020; 72:2360-2281. [PMID: 32894821 DOI: 10.1002/iub.2369] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Revised: 07/20/2020] [Accepted: 07/31/2020] [Indexed: 01/14/2023]
Abstract
The lysosome is a membrane-enclosed organelle in eukaryotic cells, which has basic pattern recognition for nutrient-dependent signal transduction. In Alzheimer's disease, the already declining autophagy-lysosomal function is exacerbated by an increased need for clearance of damaged proteins and organelles in aged cells. Recent evidence suggests that numerous diseases are linked to impaired autophagy upstream of lysosomes. In this way, a comprehensive survey on the pathophysiology of the disease seems necessary. Hence, in the first section of this review, we will discuss the ultimate findings in lysosomal signaling functions and how they affect cellular metabolism and trafficking under neurodegenerative conditions, specifically Alzheimer's disease. In the second section, we focus on how natural products and their derivatives are involved in the regulation of inflammation and lysosomal dysfunction pathways, including how these should be considered a crucial target for Alzheimer's disease therapeutics.
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Affiliation(s)
- Fahimeh Nourbakhsh
- Medical Toxicology Research Centre, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Morgayn I Read
- Department of Pharmacology, University of Otago School of Medical Sciences, Dunedin, New Zealand
| | - George E Barreto
- Department of Biological Sciences, University of Limerick, Limerick, Ireland.,Health Research Institute, University of Limerick, Limerick, Ireland
| | - Amirhossein Sahebkar
- Halal Research Center of IRI, FDA, Tehran, Iran.,Biotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran.,Neurogenic Inflammation Research Center, Mashhad University of Medical Sciences, Mashhad, Iran.,Polish Mother's Memorial Hospital Research Institute (PMMHRI), Lodz, Poland
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Light Emitting Diode Therapy Protects against Myocardial Ischemia/Reperfusion Injury through Mitigating Neuroinflammation. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2020; 2020:9343160. [PMID: 32963707 PMCID: PMC7486644 DOI: 10.1155/2020/9343160] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Accepted: 06/27/2020] [Indexed: 01/09/2023]
Abstract
Background Neuroinflammation plays a key role in myocardial ischemia-reperfusion (I/R) injury. Previous studies showed that light-emitting diode (LED) therapy might improve M2 microglia activation and brain-derived neurotrophic factor (BDNF) expression, thereby exerting anti-inflammatory effects. Therefore, we hypothesized that LED therapy might reduce myocardial I/R injury by neuroinflammation modulation. Objective To explore the effect of LED therapy on myocardial I/R-induced injury and seek the underlying mechanism. Methods Thirty rats were randomly divided into three groups: Control group (without LED treatment or myocardial I/R, n = 6), I/R group (with myocardial I/R only, n = 12), and LED+I/R group (with myocardial I/R and LED therapy, n = 12). Electrocardiogram was recorded continuously during the procedure. In addition, brain tissue was extracted for BDNF, Iba1, and CD206 analyses, and heart tissue for myocardial injury (ischemic size and infarct size), IL-4 and IL-10 mRNA analysis. Results In comparison with the I/R group, the ischemia size and the infarct size were significantly attenuated by LED therapy in the LED+I/R group. Meanwhile, the microglia activation induced by I/R injury was prominently attenuated by LED treatment either. And it is apparent that there was also an increase in the beneficial neuroinflammation markers (BDNF and CD206) in the paraventricular nucleus (PVN) in the LED+I/R group. Furthermore, the anti-inflammatory cytokines, IL-4 and IL-10, were greatly decreased by I/R while improved by LED treatment in myocardium. Conclusion LED therapy might reduce neuroinflammation in PVN and decrease myocardium injury by elevating BDNF and M2 microglia.
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Lu X, Dong J, Zheng D, Li X, Ding D, Xu H. Reperfusion combined with intraarterial administration of resveratrol-loaded nanoparticles improved cerebral ischemia-reperfusion injury in rats. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2020; 28:102208. [PMID: 32334100 DOI: 10.1016/j.nano.2020.102208] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Revised: 03/13/2020] [Accepted: 03/28/2020] [Indexed: 01/28/2023]
Abstract
Endovascular thrombectomy (EVT) has been recommended as the first line therapy for large artery occlusion (LAO) stroke. However, abrupt recovery of blood flow induces oxidative stress which breaks down the blood-brain barrier (BBB), activates apoptosis and inhibits neurogenesis. Supplement of exogenous antioxidants to relieve the injuries related to oxidative stress is a rational treatment combined to EVT for acute LAO therapy. Resveratrol (RES), an antioxidant, was encapsulated into polymeric nanoparticles (RES-NPs). In transient middle cerebral artery occlusion (tMCAO) rats, intraarterial administration of RES-NPs demonstrated significant protection against cerebral ischemia/reperfusion (I/R) injuries. RES-NPs attenuated the oxidative stress induced by I/R, prevented brain edema, protected neurons from undergoing apoptosis, and contributed to neurogenesis through enhanced expression of brain-derived neurotrophic factor (BDNF). These results suggested that intra-arterial infusion of RES-NPs in conjunction with EVT could be a potential strategy for the LAO stroke therapy.
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Affiliation(s)
- Xiaowei Lu
- Department of Geriatrics, the First Affiliated Hospital of Nanjing Medical University, Nanjing, PR China
| | - Jingde Dong
- Department of Geriatric Neurology, the Affiliated Nanjing Brain Hospital of Nanjing Medical University, Nanjing, PR China
| | - Donghui Zheng
- Department of Nephrology, the Affiliated Huai'an Hospital of Xuzhou Medical University and the Second People's Hospital of Huai'an City, Huai'an, PR China
| | - Xiaolin Li
- Department of Geriatrics, the First Affiliated Hospital of Nanjing Medical University, Nanjing, PR China
| | - Dan Ding
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials, Ministry of Education, and College of Life Sciences, Nankai University, Tianjin, China
| | - Huae Xu
- School of Pharmacy, Nanjing Medical University, Nanjing, PR China.
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Hypoxia and Macrophages Act in Concert Towards a Beneficial Outcome in Colon Cancer. Cancers (Basel) 2020; 12:cancers12040818. [PMID: 32231135 PMCID: PMC7226541 DOI: 10.3390/cancers12040818] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Revised: 03/21/2020] [Accepted: 03/24/2020] [Indexed: 12/21/2022] Open
Abstract
In colon cancer, the prognostic value of macrophages is controversial, and it is still unknown how hypoxia modulates macrophage-cancer cell crosstalk. To unravel this, co-cultures of human primary macrophages and colon cancer cells were performed at 20% and 1% O2, followed by characterization of both cellular components. Different colon cancer patient cohorts were analyzed for hypoxia and immune markers, and their association with patient overall survival was established. A positive correlation between HIF1A and CD68 in colon cancer patients was identified but, unexpectedly, in cases with higher macrophage infiltration, HIF1A expression was associated with a better prognosis, in contrast to breast, gastric, and lung cancers. Under hypoxia, co-cultures' secretome indicated a shift towards a pro-inflammatory phenotype. These alterations occurred along with increased macrophage phagocytic activity and decreased SIRPα expression. Cancer cells were more invasive and exhibited higher CD47 expression. We hypothesize that the better prognosis associated with HIF1AHighCD68High tumors could occur due to macrophagic pro-inflammatory pressure. Indeed, we found that tumors HIF1AHighCD68High expressed increased levels of CD8A, which is positively correlated with HIF1A. In conclusion, we show that in colon cancer, hypoxia drives macrophages into a pro-inflammatory phenotype, concomitant with increased infiltration of anti-tumor immune cells, favoring better disease outcome.
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NF-κB-Mediated Neuroinflammation in Parkinson's Disease and Potential Therapeutic Effect of Polyphenols. Neurotox Res 2019; 37:491-507. [PMID: 31823227 DOI: 10.1007/s12640-019-00147-2] [Citation(s) in RCA: 121] [Impact Index Per Article: 24.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2019] [Revised: 11/26/2019] [Accepted: 11/29/2019] [Indexed: 02/06/2023]
Abstract
Different animal and human studies from last two decades in the case of Parkinson's disease (PD) have concentrated on oxidative stress due to increased inflammation and cytokine-dependent neurotoxicity leading to induction of dopaminergic (DA) degeneration pathway in the nigrostriatal region. Chronic inflammation, the principle hallmark of PD, forms the basis of neurodegeneration. Aging in association with activation of glia due to neuronal injury, perhaps because of immune alterations and genetic predispositions, leads to deregulation of inflammatory pathways premising the onset of PD. A family of inducible transcription factors, nuclear factor-κB (NF-κB), is found to show expression in various cells and tissues, such as microglia, neurons, and astrocytes which play an important role in activation and regulation of inflammatory intermediates during inflammation. Both canonical and non-canonical NF-κB pathways are involved in the regulation of the stimulated cells. During the prodromal/asymptomatic stage of age-associated neurodegenerative diseases (i.e., PD and AD), chronic neuroinflammation may act silently as the driver of neuronal dysfunction. Though research has provided an insight over age-related neurodegeneration in PD, elaborative role of NF-κB in neuroinflammation is yet to be completely understood and thus requires more investigation. Polyphenols, a group of naturally occurring compound in medicinal plants, have gained attention because of their anti-oxidative and anti-neuroinflammatory properties in neurodegenerative diseases. In this aspect, this review highlights the role of NF-κB and the possible therapeutic roles of polyphenols in NF-κB-mediated neuroinflammation in PD.
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Li Z, Han X. Resveratrol alleviates early brain injury following subarachnoid hemorrhage: possible involvement of the AMPK/SIRT1/autophagy signaling pathway. Biol Chem 2019; 399:1339-1350. [PMID: 30067508 DOI: 10.1515/hsz-2018-0269] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2018] [Accepted: 07/17/2018] [Indexed: 12/20/2022]
Abstract
Resveratrol (RSV) attenuates early brain injury (EBI) after subarachnoid hemorrhage (SAH). This study aimed to investigate whether the effects of RSV on SAH-induced EBI were mediated via the AMPK/SIRT1/autophagy pathway. A SAH rat model was established and oxyhemoglobin (Oxyhb)-induced primary cortical neurons were prepared to mimic SAH in vitro. The results showed that RSV significantly reduced microglia activation and the release of inflammatory cytokines, resulting in the alleviation of neurological behavior impairment, brain edema and neural apoptosis at 24 h post-SAH. However, RSV failed to ameliorate neurological deficits, brain edema and neural apoptosis when SAH injury lasted for 72 h. Additionally, at 24 h post-SAH, RSV-administered rats showed a significant increase in the LC3-II/I ratio and the phosphorylation state of AMPK and SIRT1 protein expression in brain tissues. Further in vitro studies revealed that RSV notably reduced the release of inflammatory cytokines and neural apoptosis in neurons at 24 post-Oxyhb, which was abolished by 3MA (an autophagy inhibitor) and Compound C (an AMPK inhibitor). Moreover, Compound C decreased LC3-II/I ratio and inhibited SIRT1 protein expression, whereas 3MA had no significant effects on AMPK/SIRT1-related proteins. In conclusion, the AMPK/SIRT1/autophagy pathway plays an important role in the alleviation of SAH-induced EBI by RSV.
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Affiliation(s)
- Zhiguo Li
- Department of Interventional Radiology, The First Affiliated Hospital of Zhengzhou University, No. 1 East Jian She Road, Zhengzhou 450052, Henan, China
| | - Xinwei Han
- Department of Interventional Radiology, The First Affiliated Hospital of Zhengzhou University, No. 1 East Jian She Road, Zhengzhou 450052, Henan, China
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Resveratrol Regulates BDNF, trkB, PSA-NCAM, and Arc Expression in the Rat Cerebral Cortex after Bilateral Common Carotid Artery Occlusion and Reperfusion. Nutrients 2019; 11:nu11051000. [PMID: 31052460 PMCID: PMC6567029 DOI: 10.3390/nu11051000] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Revised: 04/24/2019] [Accepted: 04/29/2019] [Indexed: 12/17/2022] Open
Abstract
The polyphenol resveratrol (RVT) may drive protective mechanisms of cerebral homeostasis during the hypoperfusion/reperfusion triggered by the transient bilateral common carotid artery occlusion followed by reperfusion (BCCAO/R). This immunochemical study investigates if a single dose of RVT modulates the plasticity-related markers brain-derived neurotrophic factor (BDNF), the tyrosine kinase trkB receptor, Polysialylated-Neural Cell Adhesion Molecule (PSA-NCAM), and Activity-regulated cytoskeleton-associated (Arc) protein in the brain cortex after BCCAO/R. Frontal and temporal-occipital cortical regions were examined in male Wistar rats randomly subdivided in two groups, sham-operated and submitted to BCCAO/R. Six hours prior to surgery, half the rats were gavage fed a dose of RVT (180 mg·kg−1 in 300 µL of sunflower oil as the vehicle), while the second half was given the vehicle alone. In the frontal cortex of BCCAO/R vehicle-treated rats, BDNF and PSA-NCAM decreased, while trkB increased. RVT pre-treatment elicited an increment of all examined markers in both sham- and BCCAO/R rats. No variations occurred in the temporal-occipital cortex. The results highlight a role for RVT in modulating neuronal plasticity through the BDNF-trkB system and upregulation of PSA-NCAM and Arc, which may provide both trophic and structural local support in the dynamic changes occurring during the BCCAO/R, and further suggest that dietary supplements such as RVT are effective in preserving the tissue potential to engage plasticity-related events and control the functional response to the hypoperfusion/reperfusion challenge.
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Deshpande P, Gogia N, Singh A. Exploring the efficacy of natural products in alleviating Alzheimer's disease. Neural Regen Res 2019; 14:1321-1329. [PMID: 30964049 PMCID: PMC6524497 DOI: 10.4103/1673-5374.253509] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Alzheimer’s disease (hereafter AD) is a progressive neurodegenerative disorder that affects the central nervous system. There are multiple factors that cause AD, viz., accumulation of extracellular Amyloid-beta 42 plaques, intracellular hyper-phosphorylated Tau tangles, generation of reactive oxygen species due to mitochondrial dysfunction and genetic mutations. The plaques and tau tangles trigger aberrant signaling, which eventually cause cell death of the neurons. As a result, there is shrinkage of brain, cognitive defects, behavioral and psychological problems. To date, there is no direct cure for AD. Thus, scientists have been testing various strategies like screening for the small inhibitor molecule library or natural products that may block or prevent onset of AD. Historically, natural products have been used in many cultures for the treatment of various diseases. The research on natural products have gained importance as the active compounds extracted from them have medicinal values with reduced side effects, and they are bioavailable. The natural products may target the proteins or members of signaling pathways that get altered in specific diseases. Many natural products are being tested in various animal model systems for their role as a potential therapeutic target for AD, and to address questions about how these natural products can rescue AD or other neurodegenerative disorders. Some of these products are in clinical trials and results are promising because of their neuroprotective, anti-inflammatory, antioxidant, anti-amyloidogenic, anticholinesterase activities and easy availability. This review summarizes the use of animal model systems to identify natural products, which may serve as potential therapeutic targets for AD.
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Affiliation(s)
| | - Neha Gogia
- Department of Biology, University of Dayton, Dayton, OH, USA
| | - Amit Singh
- Department of Biology; Premedical Program; Center for Tissue Regeneration and Engineering at Dayton (TREND); The Integrative Science and Engineering Center; Center for Genomic Advocacy (TCGA), Indiana State University, Terre Haute, IN, USA
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Resveratrol alleviates ethanol-induced neuroinflammation in vivo and in vitro: Involvement of TLR2-MyD88-NF-κB pathway. Int J Biochem Cell Biol 2018; 103:56-64. [PMID: 30107238 DOI: 10.1016/j.biocel.2018.07.007] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Revised: 07/17/2018] [Accepted: 07/19/2018] [Indexed: 02/03/2023]
Abstract
Excessive ethanol (EtOH) intake affects cognitive function and leads to permanent learning and memory deficits. EtOH-induced neuroinflammation plays an important role in EtOH neurotoxicity. Studies have shown that EtOH activates microglia and induces an inflammatory response. Resveratrol (Rsv) is a natural polyphenol found in a wide variety of plants and fruits, and produces the neuroprotective and anti-inflammatory effects in the central nervous system. However, effect of Rsv on EtOH-induced neuroinflammation is still unknown. We investigated the anti-inflammatory effect of Rsv in the context of EtOH-induced neurotoxicity and the molecular mechanisms potentially involved in the effect. The results showed that treatment of rats with Rsv prevented the deficits of spatial reference memory induced by EtOH and mitigated EtOH-induced neuroinflammation by inhibiting microglial activation and decreasing the levels of inflammatory cytokines including interleukin-1β, interleukin-6 and tumor necrosis factor α. The further studies indicated that Rsv reduced TLR2 expression in vivo and in vitro, and downregulated expression of myeloid differentiation primary response 88 (MyD88) and phosphorylation of nuclear factor κB (NF-κB). These data demonstrate that Rsv alleviates the ethanol-induced neuroinflammation via inhibition of TLR2-MyD88-NF-κB signal pathway.
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Hashikawa-Hobara N, Mishima S, Nagase S, Morita K, Otsuka A, Hashikawa N. Effects of alcoholic beverage treatment on spatial learning and fear memory in mice. Biosci Biotechnol Biochem 2018; 82:1417-1424. [PMID: 29685094 DOI: 10.1080/09168451.2018.1464898] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
ABSTRACT
Although chronic ethanol treatment is known to impair learning and memory, humans commonly consume a range of alcoholic beverages. However, the specific effects of some alcoholic beverages on behavioral performance are largely unknown. The present study compared the effects of a range of alcoholic beverages (plain ethanol solution, red wine, sake and whiskey; with a matched alcohol concentration of 10%) on learning and memory. 6-week-old C57BL6J mice were orally administered alcohol for 7 weeks. The results revealed that red wine treatment exhibited a trend toward improvement of spatial memory and advanced extinction of fear memory. Additionally, red wine treatment significantly increased mRNA levels of brain-derived neurotrophic factor (BDNF) and N-methyl-D-aspartate (NMDA) receptors in mice hippocampus. These results support previous reports that red wine has beneficial effects.
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Affiliation(s)
| | - Shuta Mishima
- Department of Life Science, Okayama University of Science , Okayama, Japan
| | - Shotaro Nagase
- Department of Life Science, Okayama University of Science , Okayama, Japan
| | - Keishi Morita
- Department of Life Science, Okayama University of Science , Okayama, Japan
| | - Ami Otsuka
- Department of Life Science, Okayama University of Science , Okayama, Japan
| | - Naoya Hashikawa
- Department of Life Science, Okayama University of Science , Okayama, Japan
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Shal B, Ding W, Ali H, Kim YS, Khan S. Anti-neuroinflammatory Potential of Natural Products in Attenuation of Alzheimer's Disease. Front Pharmacol 2018; 9:548. [PMID: 29896105 PMCID: PMC5986949 DOI: 10.3389/fphar.2018.00548] [Citation(s) in RCA: 123] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2018] [Accepted: 05/08/2018] [Indexed: 12/22/2022] Open
Abstract
Alzheimer's disease (AD) is a chronic progressive neurodegenerative disorder associated with dementia and cognitive impairment most common in elderly population. Various pathophysiological mechanisms have been proposed by numerous researcher, although, exact mechanism is not yet elucidated. Several studies have been indicated that neuroinflammation associated with deposition of amyloid- beta (Aβ) in brain is a major hallmark toward the pathology of neurodegenerative diseases. So, there is a need to unravel the link of inflammatory process in neurodegeneration. Increased microglial activation, expression of cytokines, reactive oxygen species (ROS), and nuclear factor kappa B (NF-κB) participate in inflammatory process of AD. This review mainly concentrates on involvement of neuroinflammation and the molecular mechanisms adapted by various natural compounds, phytochemicals and herbal formulations in various signaling pathways involved in neuroprotection. Currently, pharmacologically active natural products, having anti-neuroinflammatory potential are being focused which makes them potential candidate to cure AD. A number of preclinical and clinical trials have been done on nutritional and botanical agents. Analysis of anti-inflammatory and neuroprotective phytochemicals such as terpenoids, phenolic derivatives, alkaloids, glycosides, and steroidal saponins displays therapeutic potential toward amelioration and prevention of devastating neurodegeneration observed in AD.
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Affiliation(s)
- Bushra Shal
- Department of Pharmacy, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Wei Ding
- Department of Neurosurgery, Rizhao Hospital of Traditional Chinese Medicine, Rizhao, China
| | - Hussain Ali
- Department of Pharmacy, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Yeong S Kim
- College of Pharmacy, Seoul National University, Seoul, South Korea
| | - Salman Khan
- Department of Pharmacy, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
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The Critical Role of IL-10 in the Antineuroinflammatory and Antioxidative Effects of Rheum tanguticum on Activated Microglia. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2018; 2018:1083596. [PMID: 29854069 PMCID: PMC5944207 DOI: 10.1155/2018/1083596] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Revised: 02/28/2018] [Accepted: 03/18/2018] [Indexed: 12/20/2022]
Abstract
Rheum tanguticum Maxim. ex Balf. (Rt), a traditional Tibetan medicine, is known to exert various bioactivities, including anti-inflammatory and antioxidative activities. The present study was conducted to investigate anti-inflammatory and antioxidative effects of Rt on activated microglia. Rt (10 μg/ml) significantly inhibited the mean protein level of interleukin-1β (IL-1β) in the organotypic hippocampal slice cultures following treatment with chromogranin A (CGA, 10 nM) and pancreastatin (10 nM), endogenous microglial activators present in senile plaques. Rt also significantly inhibited the expression and production of inflammatory and oxidative molecules, including IL-1β, tumor necrosis factor-α, and nitric oxide, by cultured microglia after treatment with CGA. These effects of Rt are considered to be mediated by the secretion of interleukin-10 (IL-10) from microglia, because neutralizing antibodies against IL-10 significantly canceled these effects. To explore the causative components of Rt responsible for inducing the secretion of IL-10, the effects of seven components of Rt on the IL-10 expression in microglia were examined. Among them, aloe-emodin (10 μM) and (+)-catechin (30 μM) were able to induce the secretion of IL-10 from cultured microglia. Therefore, aloe-emodin and (+)-catechin are deemed responsible for the antineuroinflammatory and antioxidative effects of Rt through the secretion of IL-10 from microglia. Accordingly, Rt is considered potentially useful for the treatment of AD.
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Gite S, Ross RP, Kirke D, Guihéneuf F, Aussant J, Stengel DB, Dinan TG, Cryan JF, Stanton C. Nutraceuticals to promote neuronal plasticity in response to corticosterone-induced stress in human neuroblastoma cells. Nutr Neurosci 2018; 22:551-568. [PMID: 29378496 DOI: 10.1080/1028415x.2017.1418728] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Objectives: To search for novel compounds that will protect neuronal cells under stressed conditions that may help to restore neuronal plasticity. Methods: A model of corticosterone (CORT)-induced stress in human neuroblastoma cells (SH-SY5Y) was used to compare the efficacy of 6 crude extracts and 10 pure compounds (6 polyphenols, 2 carotenoids, 1 amino acid analogue, and 1 known antidepressant drug) to increase neuronal plasticity and to decrease cytotoxicity. Results: Astaxanthin (among pure compounds) and phlorotannin extract of Fucus vesiculosus (among crude extracts) showed a maximum increase in cell viability in the presence of excess CORT. BDNF-VI mRNA expression in SH-SY5Y cells was significantly improved by pretreatment with quercetine, astaxanthin, curcumin, fisetin, and resveratrol. Among crude extracts, xanthohumol, phlorotannin extract (Ecklonia cava), petroleum ether extract (Nannochloropsis oculata), and phlorotannin extract (F. vesiculosus) showed a significant increase in BDNF-VI mRNA expression. CREB1 mRNA expression was significantly improved by astaxanthin, β-carotene, curcumin, and fluoxetine whereas none of the crude extracts caused significant improvement. As an adjunct of fluoxetine, phlorotannin extract (F. vesiculosus), β-carotene, and xanthohumol have resulted in significant improvement in BDNF-VI mRNA expression and CREB1 mRNA expression was significantly improved by phlorotannin extract (F. vesiculosus). Significant improvement in mature BDNF protein expression by phlorotannin extract (F. vesiculosus) and β-carotene as an adjunct of fluoxetine confirm their potential to promote neuronal plasticity against CORT-induced stress. Discussion: The carotenoids, flavonoids, namely quercetine, curcumin, and low molecular weight phlorotannin-enriched extract of F. vesiculosus may serve as potential neuroprotective agents promoting neuronal plasticity in vitro. Graphical abstract: Cascade of events associated with disturbed homeostatic balance of glucocorticoids and impact of phlorotannin extract (F. vesiculosus) and β-carotene in restoring neuronal plasticity. Abbreviation: TrKB, tropomyosin receptor kinase B; P-ERK, phosphorylated extracellular signal-related kinase; PI3K, phosphatidylinositol 3-kinase; Akt, protein kinase B; Ca++/CaMK, calcium/calmodulin-dependent protein kinase; pCREB, phosphorylated cAMP response element-binding protein; CRE, cAMP response elements, CORT, corticosterone; and BDNF; brain-derived neurotrophic factor.
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Affiliation(s)
- Snehal Gite
- a Food Biosciences Department , Teagasc Food Research Centre , Moorepark, Fermoy, Co. Cork , Ireland
| | | | - Dara Kirke
- c Botany and Plant Science, School of Natural Sciences, Ryan Institute for Environmental, Marine and Energy Research , National University of Ireland Galway , Ireland.,d Department of Food Bioscience , Teagasc Food Research Centre , Ashtown, Dublin
| | - Freddy Guihéneuf
- c Botany and Plant Science, School of Natural Sciences, Ryan Institute for Environmental, Marine and Energy Research , National University of Ireland Galway , Ireland
| | - Justine Aussant
- c Botany and Plant Science, School of Natural Sciences, Ryan Institute for Environmental, Marine and Energy Research , National University of Ireland Galway , Ireland
| | - Dagmar B Stengel
- c Botany and Plant Science, School of Natural Sciences, Ryan Institute for Environmental, Marine and Energy Research , National University of Ireland Galway , Ireland
| | - Timothy G Dinan
- e Department of Psychiatry , University College Cork , Ireland
| | - John F Cryan
- f Department of Anatomy and Neuroscience , University College Cork , Western Gateway Building, Ireland
| | - Catherine Stanton
- a Food Biosciences Department , Teagasc Food Research Centre , Moorepark, Fermoy, Co. Cork , Ireland
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Histone acetylation of oligodendrocytes protects against white matter injury induced by inflammation and hypoxia-ischemia through activation of BDNF-TrkB signaling pathway in neonatal rats. Brain Res 2017; 1688:33-46. [PMID: 29155093 DOI: 10.1016/j.brainres.2017.11.005] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Revised: 09/08/2017] [Accepted: 11/06/2017] [Indexed: 02/07/2023]
Abstract
The major pathological damage in encephalopathy of prematurity is white matter injury (WMI). Perinatal hypoxic-ischemia (HI) and inflammation are two major risk factors in the development of WMI. To study the cellular and molecular mechanisms of WMI, we set up a WMI model using lipopolysaccharide-sensitized HI injury in 2-day postnatal rats. Immunofluorescence staining was used to measure the expression of acetylated histone H3 (AH3) in oligodendrocytes, the target cells of WMI; the oligodendrocyte protein markers, NG2, O4, MBP, PLP, and MAG, were detected at different developmental stages. 5-bromo-2'-deoxyuridine (BrdU) was used to detect the proliferation of oligodendrocytes. We found that the expression of AH3 was markedly decreased in oligodendrocytes at 7 days after WMI. The differentiation and maturation of oligodendrocytes were inhibited in the WMI group. After inducing histone acetylation in oligodendrocytes by treatment with sodium butyrate, the inhibition of differentiation and maturation of oligodendrocytes was reversed. Furthermore, we found that these protective effects of histone acetylation were associated with the upregulation of brain-derived neurotrophic factor (BDNF) and its receptor, tyrosine kinase B (TrkB). In conclusion, histone acetylation protects oligodendrocytes from WMI through activation of the BDNF-TrkB signaling pathway in immature brains.
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Resveratrol as a Natural Autophagy Regulator for Prevention and Treatment of Alzheimer's Disease. Nutrients 2017; 9:nu9090927. [PMID: 28837083 PMCID: PMC5622687 DOI: 10.3390/nu9090927] [Citation(s) in RCA: 96] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2017] [Revised: 08/03/2017] [Accepted: 08/11/2017] [Indexed: 12/19/2022] Open
Abstract
Alzheimer’s disease (AD) is one of the most common neurodegenerative disorders over the age of 65 years old. Although several underlying mechanisms for explaining the pathogenesis of AD are elucidated, the effective supplements or drugs for the intervention of AD are still limited. Recently, impaired autophagy associated with miRNA dysfunction has been reported to involve in aging and aging-related neurodegenerative diseases. Thus, the activation of autophagy through effectively regulating miRNAs may become a potential target for the prevention or treatment of AD. Mounting evidence from in vitro and in vivo AD models has demonstrated that resveratrol, one of polyphenolic compounds, can exert neuroprotective role in neurodegenerative diseases especially AD. In this review, the regulation of miRNAs and autophagy using resveratrol during the prevention and treatment of AD are systematically discussed, which will be beneficial to establish a target for the direct link between pharmacological intervention and AD in the future.
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Yang X, Xu S, Qian Y, Xiao Q. Resveratrol regulates microglia M1/M2 polarization via PGC-1α in conditions of neuroinflammatory injury. Brain Behav Immun 2017; 64:162-172. [PMID: 28268115 DOI: 10.1016/j.bbi.2017.03.003] [Citation(s) in RCA: 259] [Impact Index Per Article: 37.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2016] [Revised: 02/17/2017] [Accepted: 03/04/2017] [Indexed: 01/02/2023] Open
Abstract
Microglia are the primary cells that exert immune function in the central nervous system (CNS), and accumulating evidence suggests that microglia act as key players in the initiation of neurodegenerative diseases. It is now well recognized that microglia have functional plasticity and dual phenotypes, proinflammatory M1 and anti-inflammatory M2 phenotypes. Inhibiting the M1 phenotype while stimulating the M2 phenotype has been suggested as a potential therapeutic approach for the treatment of neuroinflammation-related diseases. Resveratrol has been demonstrated to exert anti-inflammatory effects by suppressing M1 microglia activation. However, the role of resveratrol in regulating microglia polarization and the molecular mechanisms involved have not been fully clarified. In this study, we tested whether resveratrol could suppress microglia activation by promoting microglia polarization toward the M2 phenotype via PGC-1α by measuring M1 and M2 markers in vitro and in vivo. Our study demonstrated that resveratrol reduced inflammatory damage and promoted microglia polarization to the M2 phenotype in LPS-induced neuroinflammation. In addition, resveratrol ameliorated LPS-induced sickness behavior in mice. The promoting effects of resveratrol on M2 polarization were attenuated by knocking down PGC-1α. PGC-1α not only suppressed LPS-evoked M1 marker expression by inhibition of NF-κB activity but also increased M2 marker expression by coactivation of the STAT6 and STAT3 pathways. We propose that overexpression PGC-1α by resveratrol could be a potential therapeutic approach to suppress neuroinflammation by regulating microglia polarization.
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Affiliation(s)
- Xiaodong Yang
- Department of Neurology, Ruijin Hospital, Shanghai Jiao Tong University, School of Medicine, Shanghai, PR China
| | - Shaoqing Xu
- Department of Neurology, Ruijin Hospital, Shanghai Jiao Tong University, School of Medicine, Shanghai, PR China
| | - Yiwei Qian
- Department of Neurology, Ruijin Hospital, Shanghai Jiao Tong University, School of Medicine, Shanghai, PR China
| | - Qin Xiao
- Department of Neurology, Ruijin Hospital, Shanghai Jiao Tong University, School of Medicine, Shanghai, PR China.
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Zhang Q, Wang X, Bai X, Xie Y, Zhang T, Bo S, Chen X. Resveratrol reversed chronic restraint stress-induced impaired cognitive function in rats. Mol Med Rep 2017; 16:2095-2100. [PMID: 28656303 DOI: 10.3892/mmr.2017.6851] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2016] [Accepted: 05/02/2017] [Indexed: 11/05/2022] Open
Abstract
Chronic stress occurs in everyday life, and often results in memory impairments and depressive symptoms. Resveratrol is a natural polyphenol that possesses numerous biological properties, including potent antidepressant‑like effects. The present study aimed to examine the effects of resveratrol treatment on chronic restraint stress (CRS)‑induced cognitive impairment and to explore the underlying molecular mechanisms. Male Wistar rats were exposed to CRS for 21 days in order to induce depressive‑like behavior. The results demonstrated that CRS (6 h/day, 21 days) was able to induce cognitive deficits in rats, as evidenced by Morris water maze and novel object recognition tests. In addition, CRS exposure significantly decreased the mRNA and protein expression levels of hippocampal brain‑derived neurotrophic factor (BDNF) in the rats. Conversely, chronic treatment with resveratrol (80 mg/kg, i.p.; 21 days) significantly prevented the behavioral and biochemical alterations induced by CRS. The effects of resveratrol were nearly identical to those observed with fluoxetine treatment. In conclusion, the present study demonstrated that resveratrol may be a potential therapeutic agent for the treatment of chronic stress‑induced cognitive impairments, and its underlying molecular mechanism may be associated with the increased levels of hippocampal BDNF.
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Affiliation(s)
- Qian Zhang
- Department of Medical Psychology, Shandong University School of Medicine, Jinan, Shandong 250012, P.R. China
| | - Xueer Wang
- Department of Medical Psychology, Shandong University School of Medicine, Jinan, Shandong 250012, P.R. China
| | - Xuemei Bai
- Department of Medical Psychology, Shandong University School of Medicine, Jinan, Shandong 250012, P.R. China
| | - Yunkai Xie
- Department of Medical Psychology, Shandong University School of Medicine, Jinan, Shandong 250012, P.R. China
| | - Tiantian Zhang
- Department of Medical Psychology, Shandong University School of Medicine, Jinan, Shandong 250012, P.R. China
| | - Shishi Bo
- Department of Medical Psychology, Shandong University School of Medicine, Jinan, Shandong 250012, P.R. China
| | - Xiaoyang Chen
- Humanities Medical Research Center, Shandong University, Jinan, Shandong 250012, P.R. China
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Faulknor RA, Olekson MA, Ekwueme EC, Krzyszczyk P, Freeman JW, Berthiaume F. Hypoxia Impairs Mesenchymal Stromal Cell-Induced Macrophage M1 to M2 Transition. TECHNOLOGY 2017; 5:81-86. [PMID: 29552603 PMCID: PMC5854485 DOI: 10.1142/s2339547817500042] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
The transition of macrophages from the pro-inflammatory M1 to the anti-inflammatory M2 phenotype is crucial for the progression of normal wound healing. Persistent M1 macrophages within the injury site may lead to an uncontrolled macrophage-mediated inflammatory response and ultimately a failure of the wound healing cascade, leading to chronic wounds. Mesenchymal stromal cells (MSCs) have been widely reported to promote M1 to M2 macrophage transition; however, it is unclear whether MSCs can drive this transition in the hypoxic environment typically observed in chronic wounds. Here we report on the effect of hypoxia (1% O2) on MSCs' ability to transition macrophages from the M1 to the M2 phenotype. While hypoxia had no effect on MSC secretion, it inhibited MSC-induced M1 to M2 macrophage transition, and suppressed macrophage expression and production of the anti-inflammatory mediator interleukin-10 (IL-10). These results suggest that hypoxic environments may impede the therapeutic effects of MSCs.
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Affiliation(s)
- Renea A. Faulknor
- Department of Biomedical Engineering, Rutgers University, 599 Taylor Road, Piscataway, NJ 08854, USA
| | - Melissa A. Olekson
- Department of Biomedical Engineering, Rutgers University, 599 Taylor Road, Piscataway, NJ 08854, USA
| | - Emmanuel C. Ekwueme
- Department of Biomedical Engineering, Rutgers University, 599 Taylor Road, Piscataway, NJ 08854, USA
| | - Paulina Krzyszczyk
- Department of Biomedical Engineering, Rutgers University, 599 Taylor Road, Piscataway, NJ 08854, USA
| | - Joseph W. Freeman
- Department of Biomedical Engineering, Rutgers University, 599 Taylor Road, Piscataway, NJ 08854, USA
| | - François Berthiaume
- Department of Biomedical Engineering, Rutgers University, 599 Taylor Road, Piscataway, NJ 08854, USA
- Correspondence should be addressed to F.B. ()
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Abstract
Disturbance of cerebral redox homeostasis is the primary cause of human neurodegenerative disorders, such as Parkinson's disease or Alzheimer's disease. Well known experimental research demonstrates that oxidative stress is a main cause of cell death. A high concentration of reactive oxygen and nitrogen species leads to damage of a lot of proteins, lipids and also DNA. Synthetic compounds used for the treatment in the neurodegenerative diseases failed to meet the hopes they had raised and often exhibit a number of side effects. Therefore, in recent years interest in natural compounds derived from plants appears to be on the rise. This review describes a few natural compounds (1MeTIQ, resveratrol, curcumin, vitamin C and Gingko biloba) which revealed neuroprotective potential both in experimental studies and clinical trials. 1MeTIQ has a privileged position because, as opposed to the remaining compounds, it is an endogenous amine synthesized in human and animal brain. Based on evidence from research, it seems that a common protective mechanism for all the above-mentioned natural compounds relies on their ability to inhibit or even scavenge the excess of free radicals generated in oxidative and neurotoxin-induced processes in nerve cells of the brain. However, it was demonstrated that further different molecular processes connected with neurotoxicity (e.g. the inhibition of mitochondrial complex I, activation of caspase-3, apoptosis) follow later and are initiated by the reactive oxygen species. What is more, these natural compounds are able to inhibit further stages of apoptosis triggered by neurotoxins in the brain.
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Affiliation(s)
- Agnieszka Wąsik
- Institute of Pharmacology, Polish Academy of Sciences, Department of Neurochemistry, Kraków, Poland.
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Kwon YW, Cheon SY, Park SY, Song J, Lee JH. Tryptanthrin Suppresses the Activation of the LPS-Treated BV2 Microglial Cell Line via Nrf2/HO-1 Antioxidant Signaling. Front Cell Neurosci 2017; 11:18. [PMID: 28210215 PMCID: PMC5288339 DOI: 10.3389/fncel.2017.00018] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2016] [Accepted: 01/20/2017] [Indexed: 12/31/2022] Open
Abstract
Microglia are the resident macrophages in the central nervous system (CNS) and play essential roles in neuronal homeostasis and neuroinflammatory pathologies. Recently, microglia have been shown to contribute decisively to neuropathologic processes after ischemic stroke. Furthermore, natural compounds have been reported to attenuate inflammation and pathologies associated with neuroinflammation. Tryptanthrin (indolo[2,1-b]quinazoline-6,12-dione) is a phytoalkaloid with known anti-inflammatory effects in cells. In present study, the authors confirmed middle cerebral artery occlusion (MCAO) injury triggers the activation of microglia in brain tissue, and investigated whether tryptanthrin influences the function of mouse murine BV2 microglia under LPS-induced inflammatory conditions in vitro. It was found tryptanthrin protected BV2 microglia cells against LPS-induced inflammation and inhibited the induction of M1 phenotype microglia under inflammatory conditions. In addition, tryptanthrin reduced the production of pro-inflammatory cytokines in BV2 microglia cells via nuclear factor erythroid 2-related factor 2 (Nrf2)/heme oxygenase 1 (HO-1) signaling and NF-κB signaling. The authors suggest that tryptanthrin might alleviate the progress of neuropathologies by controlling microglial functions under neuroinflammatory conditions.
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Affiliation(s)
- Young-Won Kwon
- College of Korean Medicine, Dongguk University Goyang, South Korea
| | - So Yeong Cheon
- Department of Anesthesiology and Pain Medicine, Yonsei University College of Medicine Seoul, South Korea
| | - Sung Yun Park
- College of Korean Medicine, Dongguk University Goyang, South Korea
| | - Juhyun Song
- Department of Biomedical Sciences, Center for Creative Biomedical Scientists at Chonnam National University Gwangju, South Korea
| | - Ju-Hee Lee
- College of Korean Medicine, Dongguk University Goyang, South Korea
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41
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The Polarization States of Microglia in TBI: A New Paradigm for Pharmacological Intervention. Neural Plast 2017; 2017:5405104. [PMID: 28255460 PMCID: PMC5309408 DOI: 10.1155/2017/5405104] [Citation(s) in RCA: 85] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2016] [Revised: 12/17/2016] [Accepted: 01/11/2017] [Indexed: 01/04/2023] Open
Abstract
Traumatic brain injury (TBI) is a serious medical and social problem worldwide. Because of the complex pathophysiological mechanisms of TBI, effective pharmacotherapy is still lacking. The microglial cells are resident tissue macrophages located in the brain and have two major polarization states, M1 phenotype and M2 phenotype, when activated. The M1 phenotype is related to the release of proinflammatory cytokines and secondary brain injury, while the M2 phenotype has been proved to be responsible for the release of anti-inflammation cytokines and for central nervous system (CNS) repair. In animal models, pharmacological strategies inhibiting the M1 phenotype and promoting the M2 phenotype of microglial cells could alleviate cerebral damage and improve neurological function recovery after TBI. In this review, we aimed to summarize the current knowledge about the pathological significance of microglial M1/M2 polarization in the pathophysiology of TBI. In addition, we reviewed several drugs that have provided neuroprotective effects against brain injury following TBI by altering the polarization states of the microglia. We emphasized that future investigation of the regulation mechanisms of microglial M1/M2 polarization in TBI is anticipated, which could contribute to the development of new targets of pharmacological intervention in TBI.
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Lobo-Silva D, Carriche GM, Castro AG, Roque S, Saraiva M. Balancing the immune response in the brain: IL-10 and its regulation. J Neuroinflammation 2016; 13:297. [PMID: 27881137 PMCID: PMC5121946 DOI: 10.1186/s12974-016-0763-8] [Citation(s) in RCA: 260] [Impact Index Per Article: 32.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2016] [Accepted: 11/11/2016] [Indexed: 12/15/2022] Open
Abstract
Background The inflammatory response is critical to fight insults, such as pathogen invasion or tissue damage, but if not resolved often becomes detrimental to the host. A growing body of evidence places non-resolved inflammation at the core of various pathologies, from cancer to neurodegenerative diseases. It is therefore not surprising that the immune system has evolved several regulatory mechanisms to achieve maximum protection in the absence of pathology. Main body The production of the anti-inflammatory cytokine interleukin (IL)-10 is one of the most important mechanisms evolved by many immune cells to counteract damage driven by excessive inflammation. Innate immune cells of the central nervous system, notably microglia, are no exception and produce IL-10 downstream of pattern recognition receptors activation. However, whereas the molecular mechanisms regulating IL-10 expression by innate and acquired immune cells of the periphery have been extensively addressed, our knowledge on the modulation of IL-10 expression by central nervous cells is much scattered. This review addresses the current understanding on the molecular mechanisms regulating IL-10 expression by innate immune cells of the brain and the implications of IL-10 modulation in neurodegenerative disorders. Conclusion The regulation of IL-10 production by central nervous cells remains a challenging field. Answering the many remaining outstanding questions will contribute to the design of targeted approaches aiming at controlling deleterious inflammation in the brain.
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Affiliation(s)
- Diogo Lobo-Silva
- Life and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho, Braga, Portugal.,ICVS/3B's PT Government Associate Laboratory, Braga, Portugal
| | - Guilhermina M Carriche
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen, 208, 4200-135, Porto, Portugal.,IBMC - Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal
| | - A Gil Castro
- Life and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho, Braga, Portugal.,ICVS/3B's PT Government Associate Laboratory, Braga, Portugal
| | - Susana Roque
- Life and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho, Braga, Portugal.,ICVS/3B's PT Government Associate Laboratory, Braga, Portugal
| | - Margarida Saraiva
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen, 208, 4200-135, Porto, Portugal. .,IBMC - Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal.
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43
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Mingomataj EÇ, Bakiri AH. Regulator Versus Effector Paradigm: Interleukin-10 as Indicator of the Switching Response. Clin Rev Allergy Immunol 2016; 50:97-113. [PMID: 26450621 DOI: 10.1007/s12016-015-8514-7] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The interleukin-10 (IL-10) is generally considered as the most important cytokine with anti-inflammatory properties and one of the key cytokines preventing inflammation-mediated tissue damage. In this respect, IL-10 producing cells play a crucial role in the outcome of infections, allergy, autoimmune reactions, tumor development, and transplant tolerance. Based on recent findings with regard to the mentioned clinical conditions, this review attempts to shed some light on the IL-10 functions, considering this cytokine as inherent inducer of the switching immunity. While acute infections and vaccinations are associated by IL-10 enhanced during few weeks, chronic parasitoses, tumor diseases, allergen-specific immunotherapy, transplants, and use of immune-suppressor drugs show an increased IL-10 level along months or years. With regard to autoimmune pathologies, the IL-10 increase is prevalently observed during early stages, whereas the successive stages are characterized by reaching of immune equilibrium independently to disease's activity. Together, these findings indicate that IL-10 is mainly produced during transient immune conditions and the persistent IL-10-related effect is the indication/prediction (and maybe effectuation) of the switching immunity. Actual knowledge emphasizes that any manipulation of the IL-10 response for treatment purposes should be considered very cautiously due to its potential hazards to the immune system. Probably, the IL-10 as potential switcher of immunity response should be used in association with co-stimulatory immune effectors that are necessary to determine the appropriate deviation during treatment of respective pathologies. Hopefully, further findings would open new avenues to study the biology of this "master switch" cytokine and its therapeutic potential.
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Affiliation(s)
- Ervin Ç Mingomataj
- Department of Allergy & Clinical Immunology, "Mother Theresa" School of Medicine, Tirana, Albania. .,Faculty of Technical Medical Sciences, Department of Preclinical Disciplines, University of Medicine, Tirana, Albania.
| | - Alketa H Bakiri
- Hygeia Hospital Tirana, Outpatients Service, Allergology Consulting Room, Tirana, Albania.,Faculty of Medical Sciences, Department of Preclinical Disciplines, Albanian University, Tirana, Albania
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Li D, Liu N, Zhao L, Tong L, Kawano H, Yan HJ, Li HP. Protective effect of resveratrol against nigrostriatal pathway injury in striatum via JNK pathway. Brain Res 2016; 1654:1-8. [PMID: 27769789 DOI: 10.1016/j.brainres.2016.10.013] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2016] [Revised: 10/03/2016] [Accepted: 10/15/2016] [Indexed: 02/07/2023]
Abstract
Nigrostriatal pathway injury is one of the traumatic brain injury models that usually lead to neurological dysfunction or neuron necrosis. Resveratrol-induced benefits have recently been demonstrated in several models of neuronal degeneration diseases. However, the protective properties of resveratrol against neurodegeneration have not been explored definitely. Thus, we employ the nigrostriatal pathway injury model to mimic the insults on the brain. Resveratrol decreased the p-ERK expression and increased the p-JNK expression compared to the DMSO group, but not alter the p38 MAPK proteins around the lesion site by Western blot. Prior to the injury, mice were infused with resveratrol intracerebroventricularly with or without JNK-IN-8, a specific c-JNK pathway inhibitor for JNK1, JNK2 and JNK4. The study assessed modified improved neurological function score (mNSS) and beam/walking test, the level of inflammatory cytokines IL-1β, IL-6 and TNF-α, and striatal expression of Bax and Bcl-2 proteins associated with neuronal apoptosis. The results revealed that resveratrol exerted a neuroprotective effect as shown by the improved mNSS and beam latency, anti-inflammatory effects as indicated by the decreased level of IL-1β, TNF-α and IL-6. Furthermore, resveratrol up-regulated the protein expression of p-JNK and Bcl-2, down-regulated the expression of Bax and the number of Fluoro-Jade C (FJC) positive neurons. However, these advantages of resveratrol were abolished by JNK-IN-8 treatment. Overall, we demonstrated that resveratrol treatment attenuates the nigrostriatal pathway injury-induced neuronal apoptosis and inflammation via activation of c-JNK signaling.
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Affiliation(s)
- Dan Li
- Department of Human Anatomy, College of Basic Medical Sciences, China Medical University, Shenyang, China
| | - Nan Liu
- Department of Human Anatomy, College of Basic Medical Sciences, China Medical University, Shenyang, China
| | - Liang Zhao
- Department of Human Anatomy, College of Basic Medical Sciences, China Medical University, Shenyang, China
| | - Lei Tong
- Department of Human Anatomy, College of Basic Medical Sciences, China Medical University, Shenyang, China
| | - Hitoshi Kawano
- Department of Health and Dietetics, Faculty of Health and Medical Science, Teikyo Heisei University, Tokyo 170-8445, Japan
| | - Hong-Jing Yan
- Department of Human Anatomy, College of Basic Medical Sciences, China Medical University, Shenyang, China
| | - Hong-Peng Li
- Department of Human Anatomy, College of Basic Medical Sciences, China Medical University, Shenyang, China.
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Lopez MS, Dempsey RJ, Vemuganti R. Resveratrol preconditioning induces cerebral ischemic tolerance but has minimal effect on cerebral microRNA profiles. J Cereb Blood Flow Metab 2016; 36:1644-50. [PMID: 27323784 PMCID: PMC5012525 DOI: 10.1177/0271678x16656202] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/15/2016] [Accepted: 05/31/2016] [Indexed: 01/20/2023]
Abstract
The health benefits of the plant-derived polyphenol resveratrol were established in multiple disease systems. Notably, pre-treatment with resveratrol was shown to be neuroprotective in several models of cerebral ischemia. Mechanisms of resveratrol-mediated neuroprotection have been explored in the context of canonical resveratrol targets, but epigenetic and non-coding RNA processes have not yet been evaluated. Resveratrol was shown to alter microRNAs in cancer and cardiac ischemia. Previous studies also showed that ischemic preconditioning that induces ischemic tolerance significantly alters cerebral microRNA levels, particularly those that target neuroprotective pathways. Therefore, we tested if resveratrol-mediated ischemic tolerance also alters microRNA expression with a goal to identify microRNAs that are amenable to manipulation to induce neuroprotection after cerebral ischemia. Hence, we tested the microRNA profiles in mouse brain following intraperitoneal administration of resveratrol that induced significant tolerance against transient focal ischemia. We analyzed microRNA profiles using microarrays from both Affymetrix and LC Sciences that contain probes for all known mouse microRNAs. The results show that there is no consistent change in any of the microRNAs tested between resveratrol and vehicle groups indicating that microRNAs play a minimal role in resveratrol-mediated cerebral ischemic tolerance.
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Affiliation(s)
- Mary S Lopez
- Department of Neurological Surgery, University of Wisconsin, Madison, WI, USA Cellular & Molecular Pathology Training Program, University of Wisconsin, Madison, WI, USA
| | - Robert J Dempsey
- Department of Neurological Surgery, University of Wisconsin, Madison, WI, USA Neuroscience Training Program, University of Wisconsin, Madison, WI, USA
| | - Raghu Vemuganti
- Department of Neurological Surgery, University of Wisconsin, Madison, WI, USA Cellular & Molecular Pathology Training Program, University of Wisconsin, Madison, WI, USA Neuroscience Training Program, University of Wisconsin, Madison, WI, USA William S. Middleton Veterans Administration Hospital, Madison, WI, USA
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46
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Song J, Jun M, Ahn MR, Kim OY. Involvement of miR-Let7A in inflammatory response and cell survival/apoptosis regulated by resveratrol in THP-1 macrophage. Nutr Res Pract 2016; 10:377-84. [PMID: 27478543 PMCID: PMC4958639 DOI: 10.4162/nrp.2016.10.4.377] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2015] [Revised: 01/25/2016] [Accepted: 04/14/2016] [Indexed: 01/20/2023] Open
Abstract
BACKGROUND/OBJECTIVES Resveratrol, a natural polyphenol, has multiple functions in cellular responses including apoptosis, survival, and differentiation. It also participates in the regulation of inflammatory response and oxidative stress. MicroRNA-Let-7A (miR-Let7A), known as a tumor suppressor miRNA, was recently reported to play a crucial role in both inflammation and apoptosis. Therefore, we examined involvement of miR-Let7A in the modulation of inflammation and cell survival/apoptosis regulated by resveratrol. MATERIALS/METHODS mRNA expression of pro-/anti-inflammatory cytokines and sirtuin 1 (SIRT1), and protein expression of apoptosis signal-regulating kinase 1 (ASK1), p-ASK1, and caspase-3 and cleaved caspase-3 were measured, and cell viability and Hoechst/PI staining for apoptosis were observed in Lipopolysaccharide (LPS)-stimulated human THP-1 macrophages with the treatment of resveratrol and/or miR-Let7A overexpression. RESULTS Pre-treatment with resveratrol (25-200 µM) resulted in significant recovery of the reduced cell viabilities under LPS-induced inflammatory condition and in markedly increased expression of miR-Let7A in non-stimulated or LPS-stimulated cells. Increased mRNA levels of tumor necrosis factor-α and interleukin (IL)-6 induced by LPS were significantly attenuated, and decreased levels of IL-10 and brain-derived neurotrophic factor were significantly restored by resveratrol and miR-Let7A overexpression, respectively, or in combination. Decreased expression of IL-4 mRNA by LPS stimulation was also significantly increased by miR-Let7A overexpression co-treated with resveratrol. In addition, decreased SIRT1 mRNA levels, and increased p-ASK1 levels and PI-positive cells by LPS stimulation were significantly restored by resveratrol and miR-Let7A overexpression, respectively, or in combination. CONCLUSIONS miR-Let7A may be involved in the inflammatory response and cell survival/apoptosis modulated by resveratrol in human THP-1 macrophages.
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Affiliation(s)
- Juhyun Song
- Department of Biomedical Engineering, Dongguk University, Gyeonggi 10326, Korea.; Department of Biology, York University, Toronto, Ontario, Canada
| | - Mira Jun
- Department of Food Science and Nutrition, Dong-A University, 37 Nakdong-daero 550beon-gil, Saha-gu, Busan 49315, Korea
| | - Mok-Ryeon Ahn
- Department of Food Science and Nutrition, Dong-A University, 37 Nakdong-daero 550beon-gil, Saha-gu, Busan 49315, Korea
| | - Oh Yoen Kim
- Department of Food Science and Nutrition, Dong-A University, 37 Nakdong-daero 550beon-gil, Saha-gu, Busan 49315, Korea
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47
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Resveratrol: A Potential Hippocampal Plasticity Enhancer. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2016; 2016:9651236. [PMID: 27313836 PMCID: PMC4897722 DOI: 10.1155/2016/9651236] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/23/2016] [Revised: 03/31/2016] [Accepted: 04/24/2016] [Indexed: 12/14/2022]
Abstract
The search for molecules capable of restoring altered hippocampal plasticity in psychiatric and neurological conditions is one of the most important tasks of modern neuroscience. It is well established that neural plasticity, such as the ability of the postnatal hippocampus to continuously generate newly functional neurons throughout life, a process called adult hippocampal neurogenesis (AHN), can be modulated not only by pharmacological agents, physical exercise, and environmental enrichment, but also by “nutraceutical” agents. In this review we focus on resveratrol, a phenol and phytoalexin found in the skin of grapes and red berries, as well as in nuts. Resveratrol has been reported to have antioxidant and antitumor properties, but its effects as a neural plasticity inducer are still debated. The current review examines recent evidence implicating resveratrol in regulating hippocampal neural plasticity and in mitigating the effects of various disorders and diseases on this important brain structure. Overall, findings show that resveratrol can improve cognition and mood and enhance hippocampal plasticity and AHN; however, some studies report opposite effects, with resveratrol inhibiting aspects of AHN. Therefore, further investigation is needed to resolve these controversies before resveratrol can be established as a safe coadjuvant in preventing and treating neuropsychiatric conditions.
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Fernandes NC, Sriram U, Gofman L, Cenna JM, Ramirez SH, Potula R. Methamphetamine alters microglial immune function through P2X7R signaling. J Neuroinflammation 2016; 13:91. [PMID: 27117066 PMCID: PMC4847215 DOI: 10.1186/s12974-016-0553-3] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2015] [Accepted: 04/17/2016] [Indexed: 01/22/2023] Open
Abstract
Background Purinoceptors have emerged as mediators of chronic inflammation and neurodegenerative processes. The ionotropic purinoceptor P2X7 (P2X7R) is known to modulate proinflammatory signaling and integrate neuronal-glial circuits. Evidence of P2X7R involvement in neurodegeneration, chronic pain, and chronic inflammation suggests that purinergic signaling plays a major role in microglial activation during neuroinflammation. In this study, we investigated the effects of methamphetamine (METH) on microglial P2X7R. Methods ESdMs were used to evaluate changes in METH-induced P2X7R gene expression via Taqman PCR and protein expression via western blot analysis. Migration and phagocytosis assays were used to evaluate functional changes in ESdMs in response to METH treatment. METH-induced proinflammatory cytokine production following siRNA silencing of P2X7R in ESdMs measured P2X7R-dependent functional changes. In vivo expression of P2X7R and tyrosine hydroxylase (TH) was visualized in an escalating METH dose mouse model via immunohistochemical analysis. Results Stimulation of ESdMs with METH for 48 h significantly increased P2X7R mRNA (*p < 0.0336) and protein expression (*p < 0.022). Further analysis of P2X7R protein in cellular fractionations revealed increases in membrane P2X7R (*p < 0.05) but decreased cytoplasmic expression after 48 h METH treatment, suggesting protein mobilization from the cytoplasm to the membrane which occurs upon microglial stimulation with METH. Forty-eight hour METH treatment increased microglial migration towards Fractalkine (CX3CL1) compared to control (****p < 0.0001). Migration toward CX3CL1 was confirmed to be P2X7R-dependent through the use of A 438079, a P2X7R-competitive antagonist, which reversed the METH effects (****p < 0.0001). Similarly, 48 h METH treatment increased microglial phagocytosis compared to control (****p < 0.0001), and pretreatment of P2X7R antagonist reduced METH-induced phagocytosis (****p < 0.0001). Silencing the microglial P2X7R decreased TNF-α (*p < 0.0363) and IL-10 production after 48 h of METH treatment. Additionally, our studies demonstrate increased P2X7R and decreased TH expression in the striata of escalating dose METH animal model compared to controls. Conclusions This study sheds new light on the functional role of P2X7R in the regulation of microglial effector functions during substance abuse. Our findings suggest that P2X7R plays an important role in METH-induced microglial activation responses. P2X7R antagonists may thus constitute a novel target of therapeutic utility in neuroinflammatory conditions by regulating pathologically activated glial cells in stimulant abuse. Electronic supplementary material The online version of this article (doi:10.1186/s12974-016-0553-3) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Nicole C Fernandes
- Department of Pathology and Laboratory Medicine, Lewis Katz School of Medicine at Temple University, MERB 845A, 3500 N. Broad Street, Philadelphia, 19140, PA, USA
| | - Uma Sriram
- Department of Pathology and Laboratory Medicine, Lewis Katz School of Medicine at Temple University, MERB 845A, 3500 N. Broad Street, Philadelphia, 19140, PA, USA
| | - Larisa Gofman
- Department of Pathology and Laboratory Medicine, Lewis Katz School of Medicine at Temple University, MERB 845A, 3500 N. Broad Street, Philadelphia, 19140, PA, USA
| | - Jonathan M Cenna
- Department of Pathology and Laboratory Medicine, Lewis Katz School of Medicine at Temple University, MERB 845A, 3500 N. Broad Street, Philadelphia, 19140, PA, USA
| | - Servio H Ramirez
- Department of Pathology and Laboratory Medicine, Lewis Katz School of Medicine at Temple University, MERB 845A, 3500 N. Broad Street, Philadelphia, 19140, PA, USA.,Center for Substance Abuse Research, Lewis Katz School of Medicine, Philadelphia, PA, USA
| | - Raghava Potula
- Department of Pathology and Laboratory Medicine, Lewis Katz School of Medicine at Temple University, MERB 845A, 3500 N. Broad Street, Philadelphia, 19140, PA, USA. .,Center for Substance Abuse Research, Lewis Katz School of Medicine, Philadelphia, PA, USA.
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Hydroxysafflor Yellow A Attenuates Neuron Damage by Suppressing the Lipopolysaccharide-Induced TLR4 Pathway in Activated Microglial Cells. Cell Mol Neurobiol 2016; 36:1241-1256. [PMID: 26754542 DOI: 10.1007/s10571-015-0322-3] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2015] [Accepted: 12/22/2015] [Indexed: 10/22/2022]
Abstract
Microglia activation initiates a neurological deficit cascade that contributes to substantial neuronal damage and impairment following ischemia stroke. Toll-like receptor 4 (TLR4) has been demonstrated to play a critical role in this cascade. In the current study, we tested the hypothesis that hydroxysafflor yellow A (HSYA), an active ingredient extracted from Flos Carthami tinctorii, alleviated inflammatory damage, and mediated neurotrophic effects in neurons by inducing the TLR4 pathway in microglia. A non-contact Transwell co-culture system comprised microglia and neurons was treated with HSYA followed by a 1 mg/mL lipopolysaccharide (LPS) stimulation. The microglia were activated prior to neuronal apoptosis, which were induced by increasing TLR4 expression in the activated microglia. However, HSYA suppressed TLR4 expression in the activated microglia, resulting in less neuronal damage at the early stage of LPS stimulation. Western blot analysis and immunofluorescence indicated that dose-dependently HSYA down-regulated TLR4-induced downstream effectors myeloid differentiation factor 88 (MyD88), nuclear factor kappa b (NF-κB), and the mitogen-activated protein kinases (MAPK)-regulated proteins c-Jun NH2-terminal protein kinase (JNK), protein kinase (ERK) 1/2 (ERK1/2), p38 MAPK (p38), as well as the LPS-induced inflammatory cytokine release. However, HSYA up-regulated brain-derived neurotrophic factor (BDNF) expression. Our data suggest that HSYA could exert neurotrophic and anti-inflammatory functions in response to LPS stimulation by inhibiting TLR4 pathway-mediated signaling.
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Hong JH, Lee H, Lee SR. Protective effect of resveratrol against neuronal damage following transient global cerebral ischemia in mice. J Nutr Biochem 2016; 27:146-52. [DOI: 10.1016/j.jnutbio.2015.08.029] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2015] [Revised: 08/12/2015] [Accepted: 08/25/2015] [Indexed: 02/04/2023]
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