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Faysal M, Dehbia Z, Zehravi M, Sweilam SH, Haque MA, Kumar KP, Chakole RD, Shelke SP, Sirikonda S, Nafady MH, Khan SL, Nainu F, Ahmad I, Emran TB. Flavonoids as Potential Therapeutics Against Neurodegenerative Disorders: Unlocking the Prospects. Neurochem Res 2024:10.1007/s11064-024-04177-x. [PMID: 38822985 DOI: 10.1007/s11064-024-04177-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Revised: 04/13/2024] [Accepted: 05/22/2024] [Indexed: 06/03/2024]
Abstract
Neurodegeneration, the decline of nerve cells in the brain, is a common feature of neurodegenerative disorders (NDDs). Oxidative stress, a key factor in NDDs such as Alzheimer's disease, Parkinson's disease, amyotrophic lateral sclerosis, and Huntington's disease can lead to neuronal cell death, mitochondria impairment, excitotoxicity, and Ca2+ stress. Environmental factors compromising stress response lead to cell damage, necessitating novel therapeutics for preventing or treating brain disorders in older individuals and an aging population. Synthetic medications offer symptomatic benefits but can have adverse effects. This research explores the potential of flavonoids derived from plants in treating NDDs. Flavonoids compounds, have been studied for their potential to enter the brain and treat NDDs. These compounds have diverse biological effects and are currently being explored for their potential in the treatment of central nervous system disorders. Flavonoids have various beneficial effects, including antiviral, anti-allergic, antiplatelet, anti-inflammatory, anti-tumor, anti-apoptotic, and antioxidant properties. Their potential to alleviate symptoms of NDDs is significant.
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Affiliation(s)
- Md Faysal
- Department of Pharmacy, Faculty of Allied Health Sciences, Daffodil International University, Dhaka, 1207, Bangladesh
| | - Zerrouki Dehbia
- Laboratory of Agro - Biotechnology and Nutrition in Semi-Arid Zones, Faculty of Nature and Life Sciences, University of Ibn Khaldoun, Tiaret, Algeria
| | - Mehrukh Zehravi
- Department of Clinical Pharmacy, College of Dentistry & Pharmacy, Buraydah Private Colleges, Buraydah, 51418, Saudi Arabia.
| | - Sherouk Hussein Sweilam
- Department of Pharmacognosy, College of Pharmacy, Prince Sattam Bin Abdulaziz University, Al-Kharj, 11942, Saudi Arabia
- Department of Pharmacognosy, Faculty of Pharmacy, Egyptian Russian University, Cairo-Suez Road, Badr City, 11829, Cairo, Egypt
| | - M Akiful Haque
- Department of Pharmaceutical Analysis, School of Pharmacy, Anurag University, Ghatkesar, Hyderabad, 500088, India
| | - Kusuma Praveen Kumar
- Department of Pharmaceutical Chemistry, School of Pharmaceutical Sciences, Delhi Pharmaceutical Sciences and Research University (DPSRU), Govt. of N.C.T. of Delhi, Pushpvihar, New Delhi, 110017, India
| | - Rita D Chakole
- Department of Pharmaceutical Chemistry, Government College of Pharmacy, Karad, 415124, Maharashtra, India
| | - Satish P Shelke
- Department of Pharmaceutical Chemistry, Rajarshi Shahu College of Pharmacy, Buldana, 443001, Maharashtra, India
| | - Swapna Sirikonda
- Department of Pharmaceutics, School of Pharmacy, Anurag University, Ghatkesar, 500088, Hyderabad, India
| | - Mohamed H Nafady
- Faculty of Applied Health Science Technology, Misr University for Science and Technology, Giza, 12568, Egypt
| | - Sharuk L Khan
- Department of Pharmaceutical Chemistry, N.B.S. Institute of Pharmacy, Ausa, 413520, Maharashtra, India
| | - Firzan Nainu
- Department of Pharmacy, Faculty of Pharmacy, Hasanuddin University, Makassar, 90245, Indonesia
| | - Irfan Ahmad
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, King Khalid University, Abha, Saudi Arabia
| | - Talha Bin Emran
- Department of Pharmacy, Faculty of Allied Health Sciences, Daffodil International University, Dhaka, 1207, Bangladesh.
- Department of Pharmacy, BGC Trust University Bangladesh, Chittagong, 4381, Bangladesh.
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Balakrishnan R, Jannat K, Choi DK. Development of dietary small molecules as multi-targeting treatment strategies for Alzheimer's disease. Redox Biol 2024; 71:103105. [PMID: 38471283 PMCID: PMC10945280 DOI: 10.1016/j.redox.2024.103105] [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: 01/15/2024] [Revised: 02/15/2024] [Accepted: 02/24/2024] [Indexed: 03/14/2024] Open
Abstract
Cognitive dysfunction can occur both in normal aging and age-related neurological disorders, such as mild cognitive impairment and Alzheimer's disease (AD). These disorders have few treatment options due to side effects and limited efficacy. New approaches to slow cognitive decline are urgently needed. Dietary interventions (nutraceuticals) have received considerable attention because they exhibit strong neuroprotective properties and may help prevent or minimize AD symptoms. Biological aging is driven by a series of interrelated mechanisms, including oxidative stress, neuroinflammation, neuronal apoptosis, and autophagy, which function through various signaling pathways. Recent clinical and preclinical studies have shown that dietary small molecules derived from natural sources, including flavonoids, carotenoids, and polyphenolic acids, can modulate oxidative damage, cognitive impairments, mitochondrial dysfunction, neuroinflammation, neuronal apoptosis, autophagy dysregulation, and gut microbiota dysbiosis. This paper reviews research on different dietary small molecules and their bioactive constituents in the treatment of AD. Additionally, the chemical structure, effective dose, and specific molecular mechanisms of action are comprehensively explored. This paper also discusses the advantages of using nanotechnology-based drug delivery, which significantly enhances oral bioavailability, safety, and therapeutic effect, and lowers the risk of adverse effects. These agents have considerable potential as novel and safe therapeutic agents that can prevent and combat age-related AD.
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Affiliation(s)
- Rengasamy Balakrishnan
- Department of Applied Life Sciences, Graduate School, BK21 Program, Konkuk University, Chungju, 27478, South Korea; Department of Biotechnology, College of Biomedical and Health Science, Research Institute of Inflammatory Disease (RID), Konkuk University, Chungju, 27478, South Korea
| | - Khoshnur Jannat
- Department of Biotechnology, College of Biomedical and Health Science, Research Institute of Inflammatory Disease (RID), Konkuk University, Chungju, 27478, South Korea
| | - Dong-Kug Choi
- Department of Applied Life Sciences, Graduate School, BK21 Program, Konkuk University, Chungju, 27478, South Korea; Department of Biotechnology, College of Biomedical and Health Science, Research Institute of Inflammatory Disease (RID), Konkuk University, Chungju, 27478, South Korea.
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Sarkar B, Rana N, Singh C, Singh A. Medicinal herbal remedies in neurodegenerative diseases: an update on antioxidant potential. NAUNYN-SCHMIEDEBERG'S ARCHIVES OF PHARMACOLOGY 2024:10.1007/s00210-024-03027-5. [PMID: 38472370 DOI: 10.1007/s00210-024-03027-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Accepted: 02/23/2024] [Indexed: 03/14/2024]
Abstract
It has been widely documented that medicinal herbal remedies are effective, have fewer side effects than conventional medicine, and have a synergistic effect on health collaborations in the fight against complicated diseases. Traditional treatments for neurological problems in ancient times sometimes involved the use of herbal remedies and conventional methods from East Asian countries including India, Japan, China, and Korea. We collected and reviewed studies on plant-derived neuroprotective drugs and tested them in neurotoxic models. Basic research, preclinical and clinical transgene research can benefit from in silico, in vitro, and in vivo investigations. Research, summaries of the extracts, fractions, and herbal ingredients were compiled from popular scientific databases, which were then examined according to origin and bioactivity. Given the complex and varied causes of neurodegeneration, it may be beneficial to focus on multiple mechanisms of action and a neuroprotection approach. This approach aims to prevent cell death and restore function to damaged neurons, offering promising strategies for preventing and treating neurodegenerative diseases. Neurodegenerative illnesses can potentially be treated with natural compounds that have been identified as neuroprotective agents. To gain deeper insights into the neuropharmacological mechanisms underlying the neuroprotective and therapeutic properties of naturally occurring antioxidant phytochemical compounds in diverse neurodegenerative diseases, this study aims to comprehensively review such compounds, focusing on their modulation of apoptotic markers such as caspase, Bax, Bcl-2, and proinflammatory markers. In addition, we delve into a range of efficacies of antioxidant phytochemical compounds as neuroprotective agents in animal models. They reduce the oxidative stress of the brain and have been shown to have anti-apoptotic effects. Many researches have demonstrated that plant extracts or bioactive compounds can fight neurodegenerative disorders. Herbal medications may offer neurodegenerative disease patients' new treatments. This may be a cheaper and more culturally appropriate alternative to standard drugs for millions of people with age-related NDDs.
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Affiliation(s)
- Biplob Sarkar
- Department of Pharmacology, ISF College of Pharmacy, Moga, Punjab, affiliated to IK Gujral Punjab Technical University, Jalandhar, 144603, Punjab, India
| | - Nitasha Rana
- Department of Pharmacology, ISF College of Pharmacy, Moga, Punjab, affiliated to IK Gujral Punjab Technical University, Jalandhar, 144603, Punjab, India
| | - Charan Singh
- Department of Pharmaceutical Sciences, HNB Garhwal University (A Central University), Chauras Campus, Distt. Tehri Garhwal, Srinagar, 249161, Uttarakhand, India
| | - Arti Singh
- Department of Pharmacology, ISF College of Pharmacy, Moga, Punjab, affiliated to IK Gujral Punjab Technical University, Jalandhar, 144603, Punjab, India.
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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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Jin R, Hu W, Zhou M, Lin F, Xu A. Caffeic acid derivative WSY6 protects melanocytes from oxidative stress by reducing ROS production and MAPK activation. Heliyon 2024; 10:e24843. [PMID: 38304822 PMCID: PMC10831733 DOI: 10.1016/j.heliyon.2024.e24843] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Revised: 01/15/2024] [Accepted: 01/15/2024] [Indexed: 02/03/2024] Open
Abstract
Purpose Vitiligo is a chronic depigmentation disease caused by a loss of functioning melanocytes and melanin from the epidermis. Oxidative stress-induced damage to melanocytes is key in the pathogenesis of vitiligo. WSY6 is a caffeic acid derivative synthesized from epigallocatechin-3-gallate (EGCG). This study is to investigate whether the new chemical WSY6 protected melanocytes from H2O2-induced cell damage and to elucidate the underlying molecular mechanism. Patients and methods The present study compared the antioxidative potential of WSY6 with EGCG in hydrogen peroxide (H2O2)-treated PIG1 cells. Western blotting was used to study the protein expression of cyto-c, cleaved-caspase3, cleaved-caspase9, and the activation of MAPK family members, including p38, ERK1/2, JNK and their phosphorylation in melanocytes. ROS assay kit to detect intracellular reactive oxygen species production; CCK8 and lactate dehydrogenase leak assay to detect cytotoxicity. Results EGCG and WSY6 ameliorated H2O2-induced oxidative stress damage in PIG1 cells in a does-dependent manner, while WSY6 was much more effective. WSY6 reduced cellular ROS production, cytochrome c release, downregulated caspase-3 and caspase-9 activation. MAPK pathway signaling including phosphorylated p38, ERK and JNK were observed under oxidative stress and can be much protected by pre-treatment of WSY6. Conclusion These results indicated that WSY6 could be a more powerful antioxidant than EGCG and protect melanocytes against oxidative cytotoxicity.
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Affiliation(s)
| | | | - Miaoni Zhou
- Department of Dermatology, Hangzhou Third People's Hospital, Hangzhou, 310009, PR China
| | - Fuquan Lin
- Department of Dermatology, Hangzhou Third People's Hospital, Hangzhou, 310009, PR China
| | - Aie Xu
- Department of Dermatology, Hangzhou Third People's Hospital, Hangzhou, 310009, PR China
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Wu Z, Zhang T, Ma X, Guo S, Zhou Q, Zahoor A, Deng G. Recent advances in anti-inflammatory active components and action mechanisms of natural medicines. Inflammopharmacology 2023; 31:2901-2937. [PMID: 37947913 DOI: 10.1007/s10787-023-01369-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Accepted: 09/16/2023] [Indexed: 11/12/2023]
Abstract
Inflammation is a series of reactions caused by the body's resistance to external biological stimuli. Inflammation affects the occurrence and development of many diseases. Anti-inflammatory drugs have been used widely to treat inflammatory diseases, but long-term use can cause toxic side-effects and affect human functions. As immunomodulators with long-term conditioning effects and no drug residues, natural products are being investigated increasingly for the treatment of inflammatory diseases. In this review, we focus on the inflammatory process and cellular mechanisms in the development of diseases such as inflammatory bowel disease, atherosclerosis, and coronavirus disease-2019. Also, we focus on three signaling pathways (Nuclear factor-kappa B, p38 mitogen-activated protein kinase, Janus kinase/signal transducer and activator of transcription-3) to explain the anti-inflammatory effect of natural products. In addition, we also classified common natural products based on secondary metabolites and explained the association between current bidirectional prediction progress of natural product targets and inflammatory diseases.
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Affiliation(s)
- Zhimin Wu
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
| | - Tao Zhang
- College of Animal Science and Technology, Anhui Agricultural University, Hefei, China
| | - Xiaofei Ma
- College of Veterinary Medicine, Gansu Agriculture University, Lanzhou, China
| | - Shuai Guo
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
| | - Qingqing Zhou
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
| | - Arshad Zahoor
- College of Veterinary Sciences, The University of Agriculture Peshawar, Peshawar, Pakistan
| | - Ganzhen Deng
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China.
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Bhat AA, Gupta G, Singh SK, Yadav HK, Saini M, Salfi R, Singh SK, Dua K. Nanotechnology-based advancements in NF-κB pathway inhibition for the treatment of inflammatory lung diseases. Nanomedicine (Lond) 2023; 17:2209-2213. [PMID: 36802843 DOI: 10.2217/nnm-2022-0220] [Citation(s) in RCA: 19] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2023] Open
Affiliation(s)
- Asif Ahmad Bhat
- School of Pharmacy, Suresh Gyan Vihar University, Jagatpura, Mahal Road, 302017, Jaipur, India
| | - Gaurav Gupta
- School of Pharmacy, Suresh Gyan Vihar University, Jagatpura, Mahal Road, 302017, Jaipur, India.,Department of Pharmacology, Saveetha Dental College, Saveetha Institute of Medical & Technical Sciences, Saveetha University, Chennai, 602105, India.,Uttaranchal Institute of Pharmaceutical Sciences, Uttaranchal University, Dehradun, 248007, India
| | - Santosh Kumar Singh
- School of Pharmacy, Suresh Gyan Vihar University, Jagatpura, Mahal Road, 302017, Jaipur, India
| | - Hemant Ks Yadav
- School of Pharmacy, Suresh Gyan Vihar University, Jagatpura, Mahal Road, 302017, Jaipur, India
| | - Mahendra Saini
- School of Pharmacy, Suresh Gyan Vihar University, Jagatpura, Mahal Road, 302017, Jaipur, India
| | - Roshan Salfi
- Deccan School of Pharmacy, Darussalam, Aghapura, Nampally, Hyderabad, 500001, India.,Yenepoya Pharmacy College & Research Centre, Yenepoya University, Mangalore, Karnataka, 575023, India
| | - Sachin Kumar Singh
- School of Pharmaceutical Sciences, Lovely Professional University, Phagwara, Punjab, 144411, India.,Faculty of Health, Australian Research Center in Complementary & Integrative Medicine, University of Technology Sydney, Ultimo, NSW 2007, Australia
| | - Kamal Dua
- Faculty of Health, Australian Research Center in Complementary & Integrative Medicine, University of Technology Sydney, Ultimo, NSW 2007, Australia.,Discipline of Pharmacy, Graduate School of Health, University of Technology Sydney, NSW 2007, Australia
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Angeloni C, Malaguti M, Prata C, Freschi M, Barbalace MC, Hrelia S. Mechanisms Underlying Neurodegenerative Disorders and Potential Neuroprotective Activity of Agrifood By-Products. Antioxidants (Basel) 2022; 12:antiox12010094. [PMID: 36670956 PMCID: PMC9854890 DOI: 10.3390/antiox12010094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 12/23/2022] [Accepted: 12/25/2022] [Indexed: 01/03/2023] Open
Abstract
Neurodegenerative diseases, characterized by progressive loss in selected areas of the nervous system, are becoming increasingly prevalent worldwide due to an aging population. Despite their diverse clinical manifestations, neurodegenerative diseases are multifactorial disorders with standard features and mechanisms such as abnormal protein aggregation, mitochondrial dysfunction, oxidative stress and inflammation. As there are no effective treatments to counteract neurodegenerative diseases, increasing interest has been directed to the potential neuroprotective activities of plant-derived compounds found abundantly in food and in agrifood by-products. Food waste has an extremely negative impact on the environment, and recycling is needed to promote their disposal and overcome this problem. Many studies have been carried out to develop green and effective strategies to extract bioactive compounds from food by-products, such as peel, leaves, seeds, bran, kernel, pomace, and oil cake, and to investigate their biological activity. In this review, we focused on the potential neuroprotective activity of agrifood wastes obtained by common products widely produced and consumed in Italy, such as grapes, coffee, tomatoes, olives, chestnuts, onions, apples, and pomegranates.
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Affiliation(s)
- Cristina Angeloni
- Department for Life Quality Studies, Alma Mater Studiorum–University of Bologna, Corso D’Augusto 237, 47921 Rimini, Italy
| | - Marco Malaguti
- Department for Life Quality Studies, Alma Mater Studiorum–University of Bologna, Corso D’Augusto 237, 47921 Rimini, Italy
- Correspondence: (M.M.); (C.P.)
| | - Cecilia Prata
- Department of Pharmacy and Biotechnology, Alma Mater Studiorum–University of Bologna, Via Irnerio 48, 40126 Bologna, Italy
- Correspondence: (M.M.); (C.P.)
| | - Michela Freschi
- Department for Life Quality Studies, Alma Mater Studiorum–University of Bologna, Corso D’Augusto 237, 47921 Rimini, Italy
| | - Maria Cristina Barbalace
- Department for Life Quality Studies, Alma Mater Studiorum–University of Bologna, Corso D’Augusto 237, 47921 Rimini, Italy
| | - Silvana Hrelia
- Department for Life Quality Studies, Alma Mater Studiorum–University of Bologna, Corso D’Augusto 237, 47921 Rimini, Italy
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Afsar T, Razak S, Almajwal A. Reversal of cisplatin triggered neurotoxicity by Acacia hydaspica ethyl acetate fraction via regulating brain acetylcholinesterase activity, DNA damage, and pro-inflammatory cytokines in the rodent model. BMC Complement Med Ther 2022; 22:179. [PMID: 35790919 PMCID: PMC9254489 DOI: 10.1186/s12906-022-03657-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Accepted: 06/24/2022] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
Cisplatin (CisPT) is a chemotherapeutic that outcome in adverse effects including neurotoxicity. We examined the efficacy of hydaspica ethyl acetate extract (AHE) against CisPT-prompted neurotoxicity.
Methods
Group I: Distilled water; Group II: CisPT (12 mg/kg b.w. i.p) on the 13th day of treatment. Group III: received AHE (400 mg/kg b.w) orally for 16 days. Group IV and V received 200 and 400 mg/kg b.w AHE orally for 16 days while CisPT injection on day 13, respectively. Group VI: received Silymarin (100 mg/kg b.w) orally for 16 days and CP (12 mg/kg b.w., i.p.) on day 13. TNF-α, IL6, brain acetylcholinesterase activity (AChE), oxidative trauma markers, genotoxicity, antioxidant enzymes, and morphological alterations in cerebral hemispheres were inspected.
Results
AHE administration before CisPT considerably reduced both tissue TNF-α and IL 6 expressions compared to CisPT treated group in a dose-dependent manner. AHE treatment (400 mg/kg b.w) significantly ameliorated brain AChE activity. Brain tissue MDA, H2O2, and NO content were markedly (p < 0.001) elevated after CisPT inoculation while a noticeable (p < 0.001) diminution was observed in AHE treatment groups. AHE treatment significantly (p < 0.001) improved brain antioxidant defense in a dose-dependent manner. Furthermore, AHE efficiently recused CisPT to induce DNA damage in brain tissue as revealed by ladder assay and DNA fragmentation patterns. Histopathological findings revealed severe neurodegenerations in CisPT treated group, however, AHE treatment noticeably precluded morphological alterations and neuron damages induced by CisPT.
Conclusion
A. hydaspica AHE extract may be provided as a prospective adjuvant that precludes CisPT-induced neurotoxicity due to its radical scavenging and antioxidant potential.
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Kim ME, Kim DH, Lee JS. Transcription Factors as Targets of Natural Compounds in Age-Related Diseases and Cancer: Potential Therapeutic Applications. Int J Mol Sci 2022; 23:ijms232213882. [PMID: 36430361 PMCID: PMC9696520 DOI: 10.3390/ijms232213882] [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: 09/26/2022] [Revised: 11/03/2022] [Accepted: 11/09/2022] [Indexed: 11/12/2022] Open
Abstract
Inflammation exacerbates systemic pathophysiological conditions and chronic inflammation is a sustained and systemic phenomenon that aggravates aging that can lead to chronic age-related diseases. These inflammatory phenomena have recently been redefined and delineated at the molecular, cellular, and systemic levels. Many transcription factors that are activated in response to tumor metabolic state have been reported to be regulated by a class of histone deacetylase called sirtuins (SIRTs). Sirtuins play a pivotal role in the regulation of tumor cell metabolism, proliferation, and angiogenesis, including oxidative stress and inflammation. The SIRT1-mediated signaling pathway in diabetes and cancer is the SIRT1/forkhead-box class O (FoxO)/nuclear factor-kappa B (NF-κB) pathway. In this review, we describe the accumulation of SIRT1-, NF-κB-, and FoxO-mediated inflammatory processes and cellular proinflammatory signaling pathways. We also describe the proinflammatory mechanisms underlying metabolic molecular pathways in various diseases such as liver cancer and diabetes. Finally, the regulation of cancer and diabetes through the anti-inflammatory effects of natural compounds is highlighted. Evidence from inflammation studies strongly suggests that cells may be a major source of cytokines secreted during various diseases. A better understanding of the mechanisms that underpin the inflammatory response and palliative role of natural compounds will provide insights into the molecular mechanisms of inflammation and various diseases for potential intervention.
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Affiliation(s)
- Mi Eun Kim
- Department of Life Science, Immunology Research Lab, BK21-plus Research Team for Bioactive Control Technology, College of Natural Sciences, Chosun University, Dong-gu, Gwangju 61452, Korea
| | - Dae Hyun Kim
- Department of Life Science, Immunology Research Lab, BK21-plus Research Team for Bioactive Control Technology, College of Natural Sciences, Chosun University, Dong-gu, Gwangju 61452, Korea
- Correspondence: (D.H.K.); (J.S.L.); Tel.: +82-062-230-6651 (J.S.L.)
| | - Jun Sik Lee
- Department of Life Science, Immunology Research Lab, BK21-plus Research Team for Bioactive Control Technology, College of Natural Sciences, Chosun University, Dong-gu, Gwangju 61452, Korea
- LKBio Inc., Chosun University Business Incubator (CUBI) Building, Dong-gu, Gwangju 61452, Korea
- Correspondence: (D.H.K.); (J.S.L.); Tel.: +82-062-230-6651 (J.S.L.)
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The Utilization of Physiologically Active Molecular Components of Grape Seeds and Grape Marc. Int J Mol Sci 2022; 23:ijms231911165. [PMID: 36232467 PMCID: PMC9570270 DOI: 10.3390/ijms231911165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Revised: 09/01/2022] [Accepted: 09/16/2022] [Indexed: 11/18/2022] Open
Abstract
Nutritional interventions may highly contribute to the maintenance or restoration of human health. Grapes (Vitis vinifera) are one of the oldest known beneficial nutritional components of the human diet. Their high polyphenol content has been proven to enhance human health beyond doubt in statistics-based public health studies, especially in the prevention of cardiovascular disease and cancer. The current review concentrates on presenting and classifying polyphenol bioactive molecules (resveratrol, quercetin, catechin/epicatechin, etc.) available in high quantities in Vitis vinifera grapes or their byproducts. The molecular pathways and cellular signaling cascades involved in the effects of these polyphenol molecules are also presented in this review, which summarizes currently available in vitro and in vivo experimental literature data on their biological activities mostly in easily accessible tabular form. New molecules for different therapeutic purposes can also be synthesized based on existing polyphenol compound classes available in high quantities in grape, wine, and grape marc. Therefore an overview of these molecular structures is provided. Novel possibilities as dendrimer nanobioconjugates are reviewed, too. Currently available in vitro and in vivo experimental literature data on polyphenol biological activities are presented in easily accessible tabular form. The scope of the review details the antidiabetic, anticarcinogenic, antiviral, vasoprotective, and neuroprotective roles of grape-origin flavonoids. The novelty of the study lies in the description of the processing of agricultural by-products (grape seeds and skins) of industrial relevance, and the detailed description of the molecular mechanisms of action. In addition, the review of the clinical therapeutic applications of polyphenols is unique as no summary study has yet been done.
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Sergi CM. Epigallocatechin Gallate (EGCG) for Parkinson's Disease. Clin Exp Pharmacol Physiol 2022; 49:1029-1041. [PMID: 35748799 DOI: 10.1111/1440-1681.13691] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Revised: 01/03/2022] [Accepted: 06/19/2022] [Indexed: 11/28/2022]
Abstract
In the last couple of decades, we have experienced increased use of nutraceuticals worldwide with a demand for organic foods, which has been elevated to an extent probably unmatched with other periods of our civilization. One of the nutraceuticals that gained attention is epigallocatechin gallate (EGCG), a polyphenol in green tea. It has been suggested that diseases of the central nervous system (CNS) can benefit from consuming some antioxidants, despite current results showing little evidence for their use in preventing and treating these diseases. ECGC may be beneficial in delaying the neurodegeneration of the substantia nigra (SN) regardless of the origin of Parkinson's disease (PD). This review covers the effect of EGCG on vitro and animal models of PD, the potential mechanisms of neuroprotection involved and summaries recent clinical trials in human PD. This review also aims to provide an investigative analysis of the current knowledge in this field and identify putative crucial issues. Environmental factors such as dietary habits, drug use, and social interaction are all factors that influence the evolution of neurodegenerative diseases. Therefore, the use of nutraceuticals requires further investigation. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Consolato M Sergi
- National "111" Center for Cellular Regulation and Molecular Pharmaceutics, Key Laboratory of Fermentation Engineering (Ministry of Education), Hubei University of Technology, Wuhan, Hubei, China.,Anatomic Pathology, Children's Hospital of Eastern Ontario, University of Ottawa, Ottawa, ON, Canada.,Department of Orthopedics, Tianyou Hospital, Wuhan University of Science and Technology, Wuhan, Hubei, China.,Department of Laboratory Medicine and Pathology, University of Alberta, AB, Canada
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Sahadevan R, Singh S, Binoy A, Sadhukhan S. Chemico-biological aspects of (-)-epigallocatechin- 3-gallate (EGCG) to improve its stability, bioavailability and membrane permeability: Current status and future prospects. Crit Rev Food Sci Nutr 2022; 63:10382-10411. [PMID: 35491671 DOI: 10.1080/10408398.2022.2068500] [Citation(s) in RCA: 29] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Natural products have been a bedrock for drug discovery for decades. (-)-Epigallocatechin-3-gallate (EGCG) is one of the widely studied natural polyphenolic compounds derived from green tea. It is the key component believed to be responsible for the medicinal value of green tea. Significant studies implemented in in vitro, in cellulo, and in vivo models have suggested its anti-oxidant, anti-cancer, anti-diabetic, anti-inflammatory, anti-microbial, neuroprotective activities etc. Despite having such a wide array of therapeutic potential and promising results in preclinical studies, its applicability to humans has encountered with rather limited success largely due to the poor bioavailability, poor membrane permeability, rapid metabolic clearance and lack of stability of EGCG. Therefore, novel techniques are warranted to address those limitations so that EGCG or its modified analogs can be used in the clinical setup. This review comprehensively covers different strategies such as structural modifications, nano-carriers as efficient drug delivery systems, synergistic studies with other bioactivities to improve the chemico-biological aspects (e.g., stability, bioavailability, permeability, etc.) of EGCG for its enhanced pharmacokinetics and pharmacological properties, eventually enhancing its therapeutic potentials. We think this review article will serve as a strong platform with comprehensive literature on the development of novel techniques to improve the bioavailability of EGCG so that it can be translated to the clinical applications.
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Affiliation(s)
- Revathy Sahadevan
- Department of Chemistry, Indian Institute of Technology Palakkad, Kerala, India
| | - Satyam Singh
- Department of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore, Madhya Pradesh, India
| | - Anupama Binoy
- Department of Chemistry, Indian Institute of Technology Palakkad, Kerala, India
| | - Sushabhan Sadhukhan
- Department of Chemistry, Indian Institute of Technology Palakkad, Kerala, India
- Department of Biological Sciences and Engineering, Indian Institute of Technology Palakkad, Kerala, India
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Multifaceted neuroprotective effects of (-)-epigallocatechin-3-gallate (EGCG) in Alzheimer’s disease: an overview of pre-clinical studies focused on β-amyloid peptide. FOOD SCIENCE AND HUMAN WELLNESS 2022. [DOI: 10.1016/j.fshw.2021.12.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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15
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The Mechanism Study of Common Flavonoids on Antiglioma Based on Network Pharmacology and Molecular Docking. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2022; 2022:2198722. [PMID: 35140796 PMCID: PMC8820855 DOI: 10.1155/2022/2198722] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Revised: 08/30/2021] [Accepted: 12/28/2021] [Indexed: 02/08/2023]
Abstract
BACKGROUND Glioma is the most common primary intracranial tumor in adult patients. Among them, glioblastoma is a highly malignant one with a poor prognosis. Flavonoids are a class of phenolic compounds widely distributed in plants and have many biological functions, such as anti-inflammatory, antioxidant, antiaging, and anticancer. Nowadays, flavonoids have been applied to the therapy of glioma; however, the molecular mechanism underlying the therapeutic effects has not been fully elaborated. This study was carried out to explore the mechanism of selected active flavonoid compounds in treating glioma using network pharmacology and molecular docking approaches. METHODS Active ingredients and associated targets of flavonoids were acquired by using the Traditional Chinese Medicine Database and Analysis Platform (TCMSP) and Swiss TargetPrediction platform. Genes related to glioma were obtained from the GeneCards and DisGeNET databases. The intersection targets between flavonoid targets and glioma-related genes were used to construct protein-protein interaction (PPI) network via the STRING database, and the results were analyzed by Cytoscape software. Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analyses were performed and displayed by utilizing the Metascape portal and clusterProfiler R package. Molecular docking was carried out by iGEMDOCK and SwissDock, and the results were visually displayed by UCSF Chimera software. RESULTS Eighty-four active flavonoid compounds and 258 targets overlapped between flavonoid targets and glioma-related genes were achieved. PPI network revealed potential therapeutic targets, such as AKT1, EGFR, VEGFA, MAPK3, and CASP3, based on their node degree. GO and KEGG analyses showed that core targets were mainly enriched in the PI3K-Akt signaling pathway. Molecular docking simulation indicated that potential glioma-related targets-MAPK1 and HSP90AA1 were bounded more firmly with epigallocatechin-3-gallate (EGCG) than with quercetin. CONCLUSIONS The findings of this study indicated that selected active flavonoid compounds might play therapeutic roles in glioma mainly through the PI3K-Akt signaling pathway. Moreover, EGCG had the potential antiglioma activity by targeting MAPK1 and HSP90AA1.
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Role of Lipopolysaccharide, Derived from Various Bacterial Species, in Pulpitis—A Systematic Review. Biomolecules 2022; 12:biom12010138. [PMID: 35053286 PMCID: PMC8774278 DOI: 10.3390/biom12010138] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Revised: 01/09/2022] [Accepted: 01/11/2022] [Indexed: 02/06/2023] Open
Abstract
Lipopolysaccharide (LPS) is widely used for induction of inflammation in various human tissues, including dental pulp. The purpose of this study was to summarize current medical literature focusing on (1) cell types used by researchers to simulate dental pulp inflammation, (2) LPS variants utilized in experimental settings and how these choices affect the findings. Our study was conducted in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA). We searched for studies reporting outcomes of lipopolysaccharide application on dental pulp cells in vitro using electronic databases: MEDLINE, Web of Science and Scopus. Having gathered data from 115 papers, we aimed to present all known effects LPS has on different cell types present in dental pulp. We focused on specific receptors and particles that are involved in molecular pathways. Our review provides an essential foundation for further research using in vitro models of pulpitis.
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Costa R, Costa Lima SA, Gameiro P, Reis S. On the Development of a Cutaneous Flavonoid Delivery System: Advances and Limitations. Antioxidants (Basel) 2021; 10:1376. [PMID: 34573007 PMCID: PMC8472229 DOI: 10.3390/antiox10091376] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Revised: 08/09/2021] [Accepted: 08/19/2021] [Indexed: 12/11/2022] Open
Abstract
Flavonoids are one of the vital classes of natural polyphenolic compounds abundantly found in plants. Due to their wide range of therapeutic properties, which include antioxidant, anti-inflammatory, photoprotective, and depigmentation effects, flavonoids have been demonstrated to be promising agents in the treatment of several skin disorders. However, their lipophilic nature and poor water solubility invariably lead to limited oral bioavailability. In addition, they are rapidly degraded and metabolized in the human body, hindering their potential contribution to the prevention and treatment of many disorders. Thus, to overcome these challenges, several cutaneous delivery systems have been extensively studied. Topical drug delivery besides offering an alternative administration route also ensures a sustained release of the active compound at the desired site of action. Incorporation into lipid or polymer-based nanoparticles appears to be a highly effective approach for cutaneous delivery of flavonoids with good encapsulation potential and reduced toxicity. This review focuses on currently available formulations used to administer either topically or systemically different classes of flavonoids in the skin, highlighting their potential application as therapeutic and preventive agents.
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Affiliation(s)
- Raquel Costa
- LAQV, REQUIMTE, Departamento de Ciências Químicas, Faculdade de Farmácia, Universidade do Porto, 4050-313 Porto, Portugal; (R.C.); (S.A.C.L.)
- LAQV, REQUIMTE, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, 4169-007 Porto, Portugal;
| | - Sofia A. Costa Lima
- LAQV, REQUIMTE, Departamento de Ciências Químicas, Faculdade de Farmácia, Universidade do Porto, 4050-313 Porto, Portugal; (R.C.); (S.A.C.L.)
| | - Paula Gameiro
- LAQV, REQUIMTE, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, 4169-007 Porto, Portugal;
| | - Salette Reis
- LAQV, REQUIMTE, Departamento de Ciências Químicas, Faculdade de Farmácia, Universidade do Porto, 4050-313 Porto, Portugal; (R.C.); (S.A.C.L.)
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Inflammation and Alzheimer's Disease: Mechanisms and Therapeutic Implications by Natural Products. Mediators Inflamm 2021; 2021:9982954. [PMID: 34381308 PMCID: PMC8352708 DOI: 10.1155/2021/9982954] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2021] [Revised: 05/24/2021] [Accepted: 07/10/2021] [Indexed: 02/08/2023] Open
Abstract
Alzheimer's disease (AD) is a neurodegenerative disorder with no clear causative event making the disease difficult to diagnose and treat. The pathological hallmarks of AD include amyloid plaques, neurofibrillary tangles, and widespread neuronal loss. Amyloid-beta has been extensively studied and targeted to develop an effective disease-modifying therapy, but the success rate in clinical practice is minimal. Recently, neuroinflammation has been focused on as the event in AD progression to be targeted for therapies. Various mechanistic pathways including cytokines and chemokines, complement system, oxidative stress, and cyclooxygenase pathways are linked to neuroinflammation in the AD brain. Many cells including microglia, astrocytes, and oligodendrocytes work together to protect the brain from injury. This review is focused to better understand the AD inflammatory and immunoregulatory processes to develop novel anti-inflammatory drugs to slow down the progression of AD.
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Wang RX, Zhou M, Ma HL, Qiao YB, Li QS. The Role of Chronic Inflammation in Various Diseases and Anti-inflammatory Therapies Containing Natural Products. ChemMedChem 2021; 16:1576-1592. [PMID: 33528076 DOI: 10.1002/cmdc.202000996] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Indexed: 12/13/2022]
Abstract
Chronic inflammation represents a long-term reaction of the body's immune system to noxious stimuli. Such a sustained inflammatory response sometimes results in lasting damage to healthy tissues and organs. In fact, chronic inflammation is implicated in the development and progression of various diseases, including cardiovascular diseases, respiratory diseases, metabolic diseases, neurodegenerative diseases, and even cancers. Targeting nonresolving inflammation thus provides new opportunities for treating relevant diseases. In this review, we will go over several chronic inflammation-associated diseases first with emphasis on the role of inflammation in their pathogenesis. Then, we will summarize a number of natural products that exhibit therapeutic effects against those diseases by acting on different markers in the inflammatory response. We envision that natural products will remain a rich resource for the discovery of new drugs treating diseases associated with chronic inflammation.
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Affiliation(s)
- Ren-Xiao Wang
- Shanxi Key Laboratory of Innovative Drugs for the, Treatment of Serious Diseases Based on Chronic Inflammation, College of Traditional Chinese Medicines, Shanxi University of Chinese Medicine, Taiyuan, Shanxi, 030619, P. R. China.,Department of Medicinal Chemistry, School of Pharmacy, Fudan University, 826 Zhangheng Road, Shanghai, 201203, P. R. China
| | - Mi Zhou
- Department of Medicinal Chemistry, School of Pharmacy, Fudan University, 826 Zhangheng Road, Shanghai, 201203, P. R. China
| | - Hui-Lai Ma
- Shanxi Key Laboratory of Innovative Drugs for the, Treatment of Serious Diseases Based on Chronic Inflammation, College of Traditional Chinese Medicines, Shanxi University of Chinese Medicine, Taiyuan, Shanxi, 030619, P. R. China
| | - Yuan-Biao Qiao
- Shanxi Key Laboratory of Innovative Drugs for the, Treatment of Serious Diseases Based on Chronic Inflammation, College of Traditional Chinese Medicines, Shanxi University of Chinese Medicine, Taiyuan, Shanxi, 030619, P. R. China
| | - Qing-Shan Li
- Shanxi Key Laboratory of Innovative Drugs for the, Treatment of Serious Diseases Based on Chronic Inflammation, College of Traditional Chinese Medicines, Shanxi University of Chinese Medicine, Taiyuan, Shanxi, 030619, P. R. China
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20
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Zhang Y, Lin H, Liu C, Huang J, Liu Z. A review for physiological activities of EGCG and the role in improving fertility in humans/mammals. Biomed Pharmacother 2020; 127:110186. [PMID: 32559843 DOI: 10.1016/j.biopha.2020.110186] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Revised: 04/12/2020] [Accepted: 04/17/2020] [Indexed: 12/19/2022] Open
Abstract
Epigallocatechin-3-gallate (EGCG) is a secondary metabolite in green tea, which has various physiological activities, including antioxidant, antitumor, and antiviral activities. Studies have shown that EGCG has a preventive effect on infertility by protecting germ cells and oocytes from damage. EGCG functions mainly through the regulation of ROS (reactive oxygen species) levels, which affect the expression of catalase (CAT), superoxide dismutase 1(SOD1), superoxide dismutase 2(SOD2), and glutathione peroxidase (GPx), has positive influence on other enzyme activities in germ cells and oocytes, and actively alters antioxidant activities. These enzymes above can inhibit the activation of extracellular signal-regulated proteins (Erk), induce apoptosis, and control the production of ROS in tissue cells. Here, we present a comprehensive overview of the mechanisms underlying the main physiological activities of EGCG, including antioxidant, antitumor, and antiviral activities, and their potential roles in male and female reproductive systems and fertility. This paper discusses the mechanisms by which EGCG retards the infertility of germ cells and oocytes and provides a supportive recommendation for improving fertility in humans and animals. We hope it will provide useful references for related research in mammalian reproduction.
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Affiliation(s)
- Yangbo Zhang
- Hunan Agricultural University Changsha Hunan, Hunan, China.
| | - Haiyan Lin
- Hunan Agricultural University Changsha Hunan, Hunan, China.
| | - Changwei Liu
- Hunan Agricultural University Changsha Hunan, Hunan, China.
| | - Jianan Huang
- Hunan Agricultural University Changsha Hunan, Hunan, China.
| | - Zhonghua Liu
- Hunan Agricultural University Changsha Hunan, Hunan, China.
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Protective role of epigallocatechin gallate, a dietary antioxidant against oxidative stress in various diseases. Pathology 2020. [DOI: 10.1016/b978-0-12-815972-9.00021-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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22
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da Cunha LR, Muniz-Junqueira MI, Dos Santos Borges TK. Impact of polyphenols in phagocyte functions. J Inflamm Res 2019; 12:205-217. [PMID: 31686890 PMCID: PMC6708886 DOI: 10.2147/jir.s193749] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2018] [Accepted: 04/10/2019] [Indexed: 12/30/2022] Open
Abstract
Polyphenols are a broad group of substances with potential health benefits found in plant species. Several of these compounds are capable of influencing the activation of intracellular signaling pathways, such as NF-kB, MAPK and JAK-STAT, responsible for the production of various inflammatory mediators such as tumor necrosis factor α (TNF-α) and interleukin 1 beta (IL-1β) and 12 (IL-12), enzymes involved in the production of reactive species such as inducible nitric oxide synthase (iNOS) and superoxide dehydrogenase (SOD), as well as enzymes involved in the production of eicosanoids, such as cyclooxygenase (COX) and lipoxygenase (LO). There is increased interest in the use of polyphenol-rich foods because of their immunomodulatory effect; however, the mechanisms used during macrophage responses are extremely complex and little is known about the effects of polyphenols on these cells. As such, this review summarizes the current view of polyphenol influences on macrophages.
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Affiliation(s)
- Leandro Rodrigues da Cunha
- Laboratory of Cellular Immunology, Pathology, Faculty of Medicine, University of Brasilia, Brasília, Brazil
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El Sebaei M, El-Bahr SM, Al-Nazawi M, Abdel-Rahe S. Effects of Green Tea on Adipose Gene Expression, Hepatic Antioxidants and Lipid Profile in Obese Male Rats. INT J PHARMACOL 2019. [DOI: 10.3923/ijp.2019.542.548] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Abstract
Accumulating evidence has established that systemic inflammation is an important pathophysiologic factor of coronary heart disease (CHD). In this study, we investigated whether catechin exerts anti-inflammatory function in CHD rats. CHD model of rats was established by high-fat diet feeding and pituitrin injection. The successful building of CHD model was confirmed using blood liquid biochemical analyzer. Additionally, the effects of catechin on CHD parameters and several inflammatory signaling were investigated. The levels of total cholesterol, high-density lipoprotein, low-density lipoprotein cholesterin, triglyceride and blood glucose were all significantly elevated in CHD rats compared to them in control rats, suggesting the successful establishment of CHD model. Administration of catechin attenuated CHD by reversing the levels of creatine kinase, creatine kinase-MB, lactate dehydrogenase, cardiac troponin (cTnT), ventricular ejection fraction (LVEF) and systolic internal diameter (LVIDs). Additionally, several inflammatory biomarkers or cytokines such as C-reactive protein, lipoprotein-associated phospholipase A2 (Lp-PLA2), interleukin (IL)-6 and tumor necrosis factor-alpha (TNF-α) were inhibited by catechin. In contrast to nuclear factor-kappa beta (NF-κB), several proteins involved in inflammation such as farnesoid X receptor, signal transducers and activators of transcription (STAT)-3 and protein kinase B (PKB/Akt) were all activated by catechin. Catechin could be used as a promising treatment for CHD based on its role in suppressing inflammation and balancing STAT-3 signaling.
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Siddiqi KS, Husen A, Sohrab SS, Yassin MO. Recent Status of Nanomaterial Fabrication and Their Potential Applications in Neurological Disease Management. NANOSCALE RESEARCH LETTERS 2018; 13:231. [PMID: 30097809 PMCID: PMC6086777 DOI: 10.1186/s11671-018-2638-7] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2018] [Accepted: 07/24/2018] [Indexed: 05/05/2023]
Abstract
Nanomaterials (NMs) are receiving remarkable attention due to their unique properties and structure. They vary from atoms and molecules along with those of bulk materials. They can be engineered to act as drug delivery vehicles to cross blood-brain barriers (BBBs) and utilized with better efficacy and safety to deliver specific molecules into targeted cells as compared to conventional system for neurological disorders. Depending on their properties, various metal chelators, gold nanoparticles (NPs), micelles, quantum dots, polymeric NPs, liposomes, solid lipid NPs, microparticles, carbon nanotubes, and fullerenes have been utilized for various purposes including the improvement of drug delivery system, treatment response assessment, diagnosis at early stage, and management of neurological disorder by using neuro-engineering. BBB regulates micro- and macromolecule penetration/movement, thus protecting it from many kinds of illness. This phenomenon also prevents drug delivery for the neurological disorders such as Alzheimer's disease (AD), Parkinson's disease (PD), multiple sclerosis, amyotrophic lateral sclerosis, and primary brain tumors. For some neurological disorders (AD and PD), the environmental pollution was considered as a major cause, as observed that metal and/or metal oxide from different sources are inhaled and get deposited in the lungs/brain. Old age, obesity, diabetes, and cardiovascular disease are other factors for rapid deterioration of human health and onset of AD. In addition, gene mutations have also been examined to cause the early onset familial forms of AD. AD leads to cognitive impairment and plaque deposits in the brain leading to neuronal cell death. Based on these facts and considerations, this review elucidates the importance of frequently used metal chelators, NMs and/or NPs. The present review also discusses the current status and future challenges in terms of their application in drug delivery for neurological disease management.
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Affiliation(s)
| | - Azamal Husen
- Department of Biology, College of Natural and Computational Sciences, University of Gondar, PO Box # 196, Gondar, Ethiopia
| | - Sayed Sartaj Sohrab
- Special Infectious Agents Unit, King Fahd Medical Research Center, King Abdulaziz University, PO Box # 80216, Jeddah, 21589 Saudi Arabia
| | - Mensur Osman Yassin
- Department of Surgery, College of Medicine and Health Sciences, University of Gondar, PO Box # 196, Gondar, Ethiopia
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Stem Cells as Potential Targets of Polyphenols in Multiple Sclerosis and Alzheimer's Disease. BIOMED RESEARCH INTERNATIONAL 2018; 2018:1483791. [PMID: 30112360 PMCID: PMC6077677 DOI: 10.1155/2018/1483791] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/09/2018] [Accepted: 06/19/2018] [Indexed: 12/16/2022]
Abstract
Alzheimer's disease (AD) and multiple sclerosis are major neurodegenerative diseases, which are characterized by the accumulation of abnormal pathogenic proteins due to oxidative stress, mitochondrial dysfunction, impaired autophagy, and pathogens, leading to neurodegeneration and behavioral deficits. Herein, we reviewed the utility of plant polyphenols in regulating proliferation and differentiation of stem cells for inducing brain self-repair in AD and multiple sclerosis. Firstly, we discussed the genetic, physiological, and environmental factors involved in the pathophysiology of both the disorders. Next, we reviewed various stem cell therapies available and how they have proved useful in animal models of AD and multiple sclerosis. Lastly, we discussed how polyphenols utilize the potential of stem cells, either complementing their therapeutic effects or stimulating endogenous and exogenous neurogenesis, against these diseases. We suggest that polyphenols could be a potential candidate for stem cell therapy against neurodegenerative disorders.
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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: 121] [Impact Index Per Article: 20.2] [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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Pence BD, Bhattacharya TK, Park P, Rytych JL, Allen JM, Sun Y, McCusker RH, Kelley KW, Johnson RW, Rhodes JS, Woods JA. Long-term supplementation with EGCG and beta-alanine decreases mortality but does not affect cognitive or muscle function in aged mice. Exp Gerontol 2017; 98:22-29. [PMID: 28818411 DOI: 10.1016/j.exger.2017.08.020] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2017] [Revised: 07/24/2017] [Accepted: 08/13/2017] [Indexed: 02/07/2023]
Abstract
We have previously shown that 6weeks of a diet containing epigallocatechin gallate (EGCG) and beta-alanine (B-ALA) was not effective in improving either cognitive or muscle function in aged (18month) mice (Gibbons et al. Behav Brain Res 2014). However, diet reduced oxidative stress in the brain, and previous studies using longer-term interventions have documented beneficial effects in cognitive, but not muscle, function. Therefore, we investigated the effect of 6months of feeding on measures of cognitive and muscle function in mice. Mice (12months, N=15/group) were fed AIN-93M containing 0.15% EGCG and 0.34% B-ALA or standard AIN-93M for 6months, then underwent a battery of tests for cognitive and muscle function at 18months. Interestingly, a higher percentage of mice receiving EGCG and B-ALA (E+B, 80%) survived to study end compared to control (Ctrl, 40%) mice (p=0.02). E+B did not affect arm preference in the Y-maze test (p=0.74, novel arm) and did not alter performance in an active avoidance test (p=0.16, avoidances per 50 trials). E+B increased rotarod performance (p=0.03), did not affect grip strength (p=0.91), and decreased time to exhaustion in a treadmill fatigue test (p=0.02) compared to Ctrl. In conclusion, E+B reduced mortality, had no effect on cognitive function and variable effects on muscle function.
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Affiliation(s)
- Brandt D Pence
- Department of Kinesiology and Community Health, University of Illinois at Urbana-Champaign, Urbana, IL 61801, United States; Integrative Immunology and Behavior Program, University of Illinois at Urbana-Champaign, Urbana, IL 61801, United States; School of Health Studies, University of Memphis, Memphis, TN 38152, United States; Center for Nutraceutical and Dietary Supplement Research, University of Memphis, Memphis, TN 38152, United States
| | - Tushar K Bhattacharya
- Department of Psychology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, United States; Beckman Institute, University of Illinois at Urbana-Champaign, Urbana, IL 61801, United States
| | - Pul Park
- Department of Psychology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, United States; Beckman Institute, University of Illinois at Urbana-Champaign, Urbana, IL 61801, United States
| | - Jennifer L Rytych
- Integrative Immunology and Behavior Program, University of Illinois at Urbana-Champaign, Urbana, IL 61801, United States; Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61801, United States
| | - Jacob M Allen
- Department of Kinesiology and Community Health, University of Illinois at Urbana-Champaign, Urbana, IL 61801, United States; Integrative Immunology and Behavior Program, University of Illinois at Urbana-Champaign, Urbana, IL 61801, United States
| | - Yi Sun
- Department of Kinesiology and Community Health, University of Illinois at Urbana-Champaign, Urbana, IL 61801, United States; Integrative Immunology and Behavior Program, University of Illinois at Urbana-Champaign, Urbana, IL 61801, United States
| | - Robert H McCusker
- Integrative Immunology and Behavior Program, University of Illinois at Urbana-Champaign, Urbana, IL 61801, United States; Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61801, United States; Department of Pathology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, United States
| | - Keith W Kelley
- Integrative Immunology and Behavior Program, University of Illinois at Urbana-Champaign, Urbana, IL 61801, United States; Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61801, United States; Department of Pathology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, United States
| | - Rodney W Johnson
- Integrative Immunology and Behavior Program, University of Illinois at Urbana-Champaign, Urbana, IL 61801, United States; Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61801, United States; Division of Nutritional Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61801, United States
| | - Justin S Rhodes
- Department of Psychology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, United States; Beckman Institute, University of Illinois at Urbana-Champaign, Urbana, IL 61801, United States
| | - Jeffrey A Woods
- Department of Kinesiology and Community Health, University of Illinois at Urbana-Champaign, Urbana, IL 61801, United States; Integrative Immunology and Behavior Program, University of Illinois at Urbana-Champaign, Urbana, IL 61801, United States; Department of Pathology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, United States; Division of Nutritional Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61801, United States.
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Ayyalasomayajula N, Suresh C. Mechanistic comparison of current pharmacological treatments and novel phytochemicals to target amyloid peptides in Alzheimer’s and neurodegenerative diseases. Nutr Neurosci 2017; 21:682-694. [DOI: 10.1080/1028415x.2017.1345425] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
| | - Challa Suresh
- Department of Biochemistry, National Institute of Nutrition, Hyderabad 500007, India
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Pence BD, Bhattacharya TK, Park P, Rytych JL, Allen JM, Sun Y, McCusker RH, Kelley KW, Johnson RW, Rhodes JS, Woods JA. Dose-dependent decrease in mortality with no cognitive or muscle function improvements due to dietary EGCG supplementation in aged mice. Appl Physiol Nutr Metab 2017; 42:495-502. [DOI: 10.1139/apnm-2016-0530] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
We have previously shown that a diet containing epigallocatechin gallate (EGCG) and beta-alanine is not effective in improving either cognitive or muscle function in aged (18 month) mice (Gibbons et al., Behav. Brain Res., 2014, 272:131–140; Pence et al., Appl. Physiol. Nutr. Metab., 2016, 41(2): 181–190). However, this diet reduced oxidative stress in the brain, and previous studies using longer term interventions and other doses have documented beneficial effects in cognitive and muscle function, especially with EGCG. Here we hypothesized that a different dose of EGCG or longer feeding period would be more efficacious in improving cognition. Aged (21–25 mo) Balb/cByJ male mice underwent 63 days of feeding with EGCG at 0, 0.091, or 3.67 mg/g AIN-93M diet and were then subjected to a battery of cognitive and muscle function tests. EGCG feeding at either of the 2 doses did not alter preference for novel versus familiar arm in the Y-maze test (p = 0.29) and did not affect learning in the active avoidance test (p = 0.76). Similarly, EGCG did not affect preference for novel versus familiar mice in a social discrimination test (p = 0.17). Likewise, there was no effect of EGCG on muscle function by grip strength (p = 0.16), rotarod (p = 0.18), or treadmill test to exhaustion (p = 0.25). EGCG reduced mortality in a dose-dependent fashion (p = 0.05, log-rank test for trend), with 91% of high EGCG, 72% of low EGCG, and 55% of control mice surviving to the end of the study. In conclusion, EGCG improves survival in aged mice but does not affect cognitive or muscle function.
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Affiliation(s)
- Brandt D. Pence
- Department of Kinesiology and Community Health, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
- Integrative Immunology and Behavior Program, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Tushar K. Bhattacharya
- Department of Psychology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
- Beckman Institute, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Pul Park
- Department of Psychology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
- Beckman Institute, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Jennifer L. Rytych
- Integrative Immunology and Behavior Program, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
- Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Jacob M. Allen
- Department of Kinesiology and Community Health, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
- Integrative Immunology and Behavior Program, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Yi Sun
- Department of Kinesiology and Community Health, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
- Integrative Immunology and Behavior Program, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Robert H. McCusker
- Integrative Immunology and Behavior Program, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
- Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
- Department of Pathology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Keith W. Kelley
- Integrative Immunology and Behavior Program, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
- Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
- Department of Pathology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Rodney W. Johnson
- Integrative Immunology and Behavior Program, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
- Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
- Division of Nutritional Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Justin S. Rhodes
- Department of Psychology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
- Beckman Institute, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Jeffrey A. Woods
- Department of Kinesiology and Community Health, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
- Integrative Immunology and Behavior Program, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
- Department of Pathology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
- Division of Nutritional Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
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Szulińska M, Stępień M, Kręgielska-Narożna M, Suliburska J, Skrypnik D, Bąk-Sosnowska M, Kujawska-Łuczak M, Grzymisławska M, Bogdański P. Effects of green tea supplementation on inflammation markers, antioxidant status and blood pressure in NaCl-induced hypertensive rat model. Food Nutr Res 2017; 61:1295525. [PMID: 28326006 PMCID: PMC5345575 DOI: 10.1080/16546628.2017.1295525] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2016] [Accepted: 02/07/2017] [Indexed: 12/29/2022] Open
Abstract
Background: Recent studies indicate the important role of chronic inflammation and oxidative stress in the pathogenesis of hypertension. Green tea, due to the high content of catechins, shows high antioxidant activity. Objective: To determine the effect of supplementation with green tea extract on the blood pressure, on the concentration of selected parameters of inflammation and antioxidant status in the model of high-sodium-diet induced hypertension. Design: The study lasted 42 days. The experimental population consisted of 30 rats. The rats were divided into three groups. The rats in the control group were fed a standard diet with 35 g of NaCl per kg of diet, in the second group hypertensive rats were fed a standard diet with NaCl (35 g/kg diet) and with an extract of green tea (2 g/kg diet). The third group consisted of hypertensive rats fed a standard diet with NaCl (35 g/kg diet), and 4 g of green tea extract/kg diet. Results: Supplementation with green tea had no effect on body mass of rats on a high-sodium diet. At the end of the experiment systolic blood pressures in SH2 and SH4 groups were significantly lower than in the control group SK. The SH4 group was characterized by a significantly lower diastolic blood pressure value and concentration of TNF-α in comparison to the SK group. The rats from both SH2 and SH4 groups were characterized by higher total antioxidant status values compared to the control group. Discussion: The mechanism of the beneficial effects of green tea on blood pressure is not clear, but it is believed that it is related to its omnidirectional properties. Conclusions: Supplementation of green tea has a beneficial effect on blood pressure, markers of inflammation and antioxidant status in an experimental model of hypertension.
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Affiliation(s)
- Monika Szulińska
- Department of Education and Obesity Treatment and Metabolic Disorders, Poznań University of Medical Sciences , Poznań , Poland
| | - Marta Stępień
- Department of Education and Obesity Treatment and Metabolic Disorders, Poznań University of Medical Sciences , Poznań , Poland
| | - Matylda Kręgielska-Narożna
- Department of Education and Obesity Treatment and Metabolic Disorders, Poznań University of Medical Sciences , Poznań , Poland
| | - Joanna Suliburska
- Department of Human Nutrition and Hygiene, Poznań University of Life Sciences , Poznań , Poland
| | - Damian Skrypnik
- Department of Internal Medicine, Metabolic Disorders and Hypertension, Poznań University of Medical Sciences , Poznań , Poland
| | - Monika Bąk-Sosnowska
- Department of Psychology, Chair of Philosophy and Humanities, School of Health Sciences in Katowice, Medical University of Silesia , Katowice , Poland
| | - Magdalena Kujawska-Łuczak
- Department of Internal Medicine, Metabolic Disorders and Hypertension, Poznań University of Medical Sciences , Poznań , Poland
| | | | - Paweł Bogdański
- Department of Education and Obesity Treatment and Metabolic Disorders, Poznań University of Medical Sciences , Poznań , Poland
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Singh NA, Mandal AKA, Khan ZA. Potential neuroprotective properties of epigallocatechin-3-gallate (EGCG). Nutr J 2016; 15:60. [PMID: 27268025 PMCID: PMC4897892 DOI: 10.1186/s12937-016-0179-4] [Citation(s) in RCA: 159] [Impact Index Per Article: 19.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2016] [Accepted: 06/02/2016] [Indexed: 12/17/2022] Open
Abstract
Neurodegenerative diseases such as Alzheimer's disease (AD) and Parkinson's disease (PD) enforce an overwhelming social and economic burden on society. They are primarily characterized through the accumulation of modified proteins, which further trigger biological responses such as inflammation, oxidative stress, excitotoxicity and modulation of signalling pathways. In a hope for cure, these diseases have been studied extensively over the last decade to successfully develop symptom-oriented therapies. However, so far no definite cure has been found. Therefore, there is a need to identify a class of drug capable of reversing neural damage and preventing further neural death. This review therefore assesses the reliability of the neuroprotective benefits of epigallocatechin-gallate (EGCG) by shedding light on their biological, pharmacological, antioxidant and metal chelation properties, with emphasis on their ability to invoke a range of cellular mechanisms in the brain. It also discusses the possible use of nanotechnology to enhance the neuroprotective benefits of EGCG.
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Affiliation(s)
- Neha Atulkumar Singh
- Department of Integrative Biology, School of Biosciences and Technology, VIT University, Vellore, 632014, Tamil Nadu, India
| | - Abul Kalam Azad Mandal
- Department of Biotechnology, School of Biosciences and Technology, VIT University, Vellore, 632014, Tamil Nadu, India
| | - Zaved Ahmed Khan
- Centre for Interdisciplinary Biomedical Research, Adesh University, Bathinda, Punjab, India.
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Libro R, Giacoppo S, Soundara Rajan T, Bramanti P, Mazzon E. Natural Phytochemicals in the Treatment and Prevention of Dementia: An Overview. Molecules 2016; 21:518. [PMID: 27110749 PMCID: PMC6274085 DOI: 10.3390/molecules21040518] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2016] [Revised: 04/04/2016] [Accepted: 04/13/2016] [Indexed: 02/07/2023] Open
Abstract
The word dementia describes a class of heterogeneous diseases which etiopathogenetic mechanisms are not well understood. There are different types of dementia, among which, Alzheimer's disease (AD), vascular dementia (VaD), dementia with Lewy bodies (DLB) and frontotemporal dementia (FTD) are the more common. Currently approved pharmacological treatments for most forms of dementia seem to act only on symptoms without having profound disease-modifying effects. Thus, alternative strategies capable of preventing the progressive loss of specific neuronal populations are urgently required. In particular, the attention of researchers has been focused on phytochemical compounds that have shown antioxidative, anti-amyloidogenic, anti-inflammatory and anti-apoptotic properties and that could represent important resources in the discovery of drug candidates against dementia. In this review, we summarize the neuroprotective effects of the main phytochemicals belonging to the polyphenol, isothiocyanate, alkaloid and cannabinoid families in the prevention and treatment of the most common kinds of dementia. We believe that natural phytochemicals may represent a promising sources of alternative medicine, at least in association with therapies approved to date for dementia.
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Affiliation(s)
- Rosaliana Libro
- IRCCS Centro Neurolesi "Bonino-Pulejo", Via Provinciale Palermo, Contrada Casazza, 98124 Messina, Italy.
| | - Sabrina Giacoppo
- IRCCS Centro Neurolesi "Bonino-Pulejo", Via Provinciale Palermo, Contrada Casazza, 98124 Messina, Italy.
| | - Thangavelu Soundara Rajan
- IRCCS Centro Neurolesi "Bonino-Pulejo", Via Provinciale Palermo, Contrada Casazza, 98124 Messina, Italy.
| | - Placido Bramanti
- IRCCS Centro Neurolesi "Bonino-Pulejo", Via Provinciale Palermo, Contrada Casazza, 98124 Messina, Italy.
| | - Emanuela Mazzon
- IRCCS Centro Neurolesi "Bonino-Pulejo", Via Provinciale Palermo, Contrada Casazza, 98124 Messina, Italy.
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Azam F, Mohamed N, Alhussen F. Molecular interaction studies of green tea catechins as multitarget drug candidates for the treatment of Parkinson's disease: computational and structural insights. NETWORK (BRISTOL, ENGLAND) 2016; 26:97-115. [PMID: 27030558 DOI: 10.3109/0954898x.2016.1146416] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Green tea catechins have extensively been studied for their imminent role in reducing the risk of various neurodegenerative diseases such as Parkinson's disease (PD). Understanding the molecular interaction of these compounds with various anti-Parkinsonian drug targets is of interest. The present study is intended to explore binding modes of catechins with molecular targets having potential role in PD. Lamarckian genetic algorithm methodology was adopted for molecular docking simulations employing AutoDock 4.2 program. Toxicity potential and molecular properties responsible for good pharmacokinetic profile were calculated by Osiris property explorer and Molinspiration online toolkit, respectively. A strong correlation coefficient (r(2) = 0.893) was obtained between experimentally reported and docking predicted activities of native co-crystallized ligands of the 18 target receptors used in current study. Analysis of docked conformations revealed monoamine oxidase-B as most promising, while N-methyl-D-aspartate receptor was recognized as the least favorable target for catechins. Benzopyran skeleton with a phenyl group substituted at the 2-position and a hydroxyl (or ester) function at the 3-position has been identified as common structural requirements at majority of the targets. The present findings suggest that epigallocatechin gallate is the most promising lead to be developed as multitarget drug for the design and development of novel anti-Parkinsonian agents.
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Affiliation(s)
- Faizul Azam
- a Department of Pharmaceutical Chemistry, Faculty of Pharmacy , Misurata University , Misurata , Libya
| | - Najah Mohamed
- a Department of Pharmaceutical Chemistry, Faculty of Pharmacy , Misurata University , Misurata , Libya
| | - Fatma Alhussen
- a Department of Pharmaceutical Chemistry, Faculty of Pharmacy , Misurata University , Misurata , Libya
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35
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Moneim AEA. Oxidant/Antioxidant imbalance and the risk of Alzheimer's disease. Curr Alzheimer Res 2016; 12:335-49. [PMID: 25817254 PMCID: PMC5384363 DOI: 10.2174/1567205012666150325182702] [Citation(s) in RCA: 98] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2014] [Revised: 03/15/2015] [Accepted: 03/17/2015] [Indexed: 12/14/2022]
Abstract
Alzheimer's disease (AD) is the most common form of dementia characterized by progressive loss of memory and other cognitive functions among older people. Senile plaques and neurofibrillary tangles are the most hallmarks lesions in the brain of AD in addition to neurons loss. Accumulating evidence has shown that oxidative stress-induced damage may play an important role in the initiation and progression of AD pathogenesis. Redox impairment occurs when there is an imbalance between the production and quenching of free radicals from oxygen species. These reactive oxygen species augment the formation and aggregation of amyloid-β and tau protein hyperphosphorylation and vice versa. Currently, there is no available treatments can modify the disease. However, wide varieties of antioxidants show promise to delay or prevent the symptoms of AD and may help in treating the disease. In this review, the role of oxidative stress in AD pathogenesis and the common used antioxidant therapies for AD will summarize.
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Affiliation(s)
- Ahmed E Abdel Moneim
- Biomedical Research Center, Health Sciences Technology Park, University of Granada, Avda. del Conocimiento s/n, 18100 Armilla, Granada, Spain.
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Bhat WF, Bhat SA, Bano B. Evaluation of polyphenols as possible therapeutics for amyloidoses: Comparative analysis of Kaempferol and Catechin. Int J Biol Macromol 2015; 81:60-8. [DOI: 10.1016/j.ijbiomac.2015.07.052] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2015] [Revised: 07/24/2015] [Accepted: 07/26/2015] [Indexed: 12/18/2022]
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Singh BN, Singh HB, Singh A, Naqvi AH, Singh BR. Dietary phytochemicals alter epigenetic events and signaling pathways for inhibition of metastasis cascade: phytoblockers of metastasis cascade. Cancer Metastasis Rev 2015; 33:41-85. [PMID: 24390421 DOI: 10.1007/s10555-013-9457-1] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Cancer metastasis is a multistep process in which a cancer cell spreads from the site of the primary lesion, passes through the circulatory system, and establishes a secondary tumor at a new nonadjacent organ or part. Inhibition of cancer progression by dietary phytochemicals (DPs) offers significant promise for reducing the incidence and mortality of cancer. Consumption of DPs in the diet has been linked to a decrease in the rate of metastatic cancer in a number of preclinical animal models and human epidemiological studies. DPs have been reported to modulate the numerous biological events including epigenetic events (noncoding micro-RNAs, histone modification, and DNA methylation) and multiple signaling transduction pathways (Wnt/β-catenin, Notch, Sonic hedgehog, COX-2, EGFR, MAPK-ERK, JAK-STAT, Akt/PI3K/mTOR, NF-κB, AP-1, etc.), which can play a key role in regulation of metastasis cascade. Extensive studies have also been performed to determine the molecular mechanisms underlying antimetastatic activity of DPs, with results indicating that these DPs have significant inhibitory activity at nearly every step of the metastatic cascade. DPs have anticancer effects by inducing apoptosis and by inhibiting cell growth, migration, invasion, and angiogenesis. Growing evidence has also shown that these natural agents potentiate the efficacy of chemotherapy and radiotherapy through the regulation of multiple signaling pathways. In this review, we discuss the variety of molecular mechanisms by which DPs regulate metastatic cascade and highlight the potentials of these DPs as promising therapeutic inhibitors of cancer.
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Affiliation(s)
- B N Singh
- Research and Development Division, Sowbhagya Biotech Private Limited, Cherlapally, Hyderabad, 500051, Andhra Pradesh, India
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Yang DJ, Liu SC, Chen YC, Hsu SH, Chang YP, Lin JT. Three Pathways Assess Anti-Inflammatory Response of Epicatechin with Lipopolysaccharide-Mediated Macrophage RAW264.7 Cells. J Food Biochem 2015. [DOI: 10.1111/jfbc.12134] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Deng-Jye Yang
- School of Health Diet and Industry Management; Chung Shan Medical University; Taichung Taiwan
- Department of Nutrition; Chung Shan Medical University Hospital; Taichung Taiwan
| | - Shih-Chuan Liu
- School of Health Diet and Industry Management; Chung Shan Medical University; Taichung Taiwan
- Department of Nutrition; Chung Shan Medical University Hospital; Taichung Taiwan
| | - Yi-Chen Chen
- Department of Animal Science and Technology; National Taiwan University; Taipei Taiwan
| | - Shih-Han Hsu
- School of Health Diet and Industry Management; Chung Shan Medical University; Taichung Taiwan
- Department of Nutrition; Chung Shan Medical University Hospital; Taichung Taiwan
| | - Yu-Pei Chang
- School of Health Diet and Industry Management; Chung Shan Medical University; Taichung Taiwan
- Department of Nutrition; Chung Shan Medical University Hospital; Taichung Taiwan
| | - Jau-Tien Lin
- School of Medical Applied Chemistry; Chung Shan Medical University; 110 Section 1 Jianguo N. Road Taichung 402 Taiwan
- Department of Medical Education; Chung Shan Medical University Hospital; 110 Section 1 Jianguo N. Road Taichung 402 Taiwan
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Srinivasan M, Lahiri DK. Significance of NF-κB as a pivotal therapeutic target in the neurodegenerative pathologies of Alzheimer's disease and multiple sclerosis. Expert Opin Ther Targets 2015; 19:471-87. [PMID: 25652642 DOI: 10.1517/14728222.2014.989834] [Citation(s) in RCA: 113] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
INTRODUCTION Advances in molecular pathogenesis suggest that the chronic inflammation is a shared mechanism in the initiation and progression of multiple neurodegenerative diseases with diverse clinical manifestations such as Alzheimer's disease (AD) and Multiple sclerosis (MS). Restricted cell renewal and regenerative capacity make the neural tissues extremely vulnerable to the uncontrolled inflammatory process leading to irreversible tissue damage. AREAS COVERED A predominant consequence of increased inflammatory signaling is the upregulation of the transcription factor, NF-κB with subsequent neuroprotective or deleterious effects depending on the strength of the signal and the type of NF-κB dimers activated. We discuss the interplay between neuroinflammation and neurodegeneration keeping in focus NF-κB signaling as the point of convergence of multiple pathways associated with the development of the neurodegenerative pathologies, AD and MS. EXPERT OPINION Considerable interest exists in developing efficient NF-κB inhibitors for neurodegenerative diseases. The review includes an overview of natural compounds and rationally designed agents that inhibit NF-κB and mediate neuroprotection in AD and MS. The key chemical moieties of the natural and the synthetic compounds provide efficient leads for the development of effective small molecule inhibitors that selectively target NF-κB activation; this would result in the desired benefit to risk therapeutic effects.
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Affiliation(s)
- Mythily Srinivasan
- Indiana University School of Dentistry, Oral Pathology, Radiology and Medicine , Indianapolis, IN , USA +1 317 278 9686 ; +1 317 278 3018 ;
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Abstract
Amyloid-β plaques and neurofibrillary tangles are the main neuropathological hallmarks in Alzheimer's disease (AD), the most common cause of dementia in the elderly. However, it has become increasingly apparent that neuroinflammation plays a significant role in the pathophysiology of AD. This review summarizes the current status of neuroinflammation research related to AD, focusing on the connections between neuroinflammation and some inflammation factors in AD. Among these connections, we discuss the dysfunctional blood-brain barrier and alterations in the functional responses of microglia and astrocytes in this process. In addition, we summarize and discuss the role of intracellular signaling pathways involved in inflammatory responses in astrocytes and microglia, including the mitogen-activated protein kinase pathways, nuclear factor-kappa B cascade, and peroxisome proliferator-activated receptor-gamma transcription factors. Finally, the dysregulation of the control and release of pro- and anti-inflammatory cytokines and classic AD pathology (amyloid plaques and neurofibrillary tangles) in AD is also reviewed.
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Affiliation(s)
- Fengjin Zhang
- Department of Pharmacy, General Hospital of Guangzhou Military Command, Guangzhou City, People's Republic of China ; School of Bioscience and Bioengineering, South China University of Technology, Guangzhou City, People's Republic of China
| | - Linlan Jiang
- Department of Pharmacy, General Hospital of Guangzhou Military Command, Guangzhou City, People's Republic of China
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Abstract
PURPOSE The aim of this study was to evaluate the efficacy of topical application of epigallocatechin gallate (EGCG) for the treatment of corneal neovascularization in a rabbit model. METHODS Corneal neovascularization was induced in 12 rabbits by placing a black silk suture in the corneal stroma (24 eyes) for a week. After suturing, 1 randomly chosen eye of the 12 rabbits was treated with topical EGCG at 2 different concentrations: 0.01% (group 1) and 0.1% (group 2), whereas the contralateral eyes were treated with sterilized balanced salt solution as the control. All eye drops were applied for 2 weeks after suturing. The suture materials were removed from all eyes on day 7. The surface area of corneal neovascularization was measured and analyzed in all eyes on days 7 and 14. On day 14, all eyes were extracted to measure the concentrations of vascular endothelial growth factor (VEGF) messenger RNA and cyclooxygenase-2 (COX-2) protein. RESULTS The surface area of induced corneal neovascularization was significantly smaller only in group 2 compared with that of the control group on days 7 and 14 (P < 0.001). The change in surface area of corneal neovascularization after removal of the suture material was not significantly different between all 3 groups. VEGF messenger RNA levels were significantly lower in group 2 than in the control group (P < 0.001). The concentration of COX-2 was significantly lower in group 2 than in the control group (P = 0.043), but no significant difference was observed between group 1 and the control group. CONCLUSIONS Topical administration of EGCG effectively inhibits corneal neovascularization in rabbits. This inhibitory effect is probably related to the suppression of VEGF and COX-2 meditated angiogenesis.
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Gibbons TE, Pence BD, Petr G, Ossyra JM, Mach HC, Bhattacharya TK, Perez S, Martin SA, McCusker RH, Kelley KW, Rhodes JS, Johnson RW, Woods JA. Voluntary wheel running, but not a diet containing (-)-epigallocatechin-3-gallate and β-alanine, improves learning, memory and hippocampal neurogenesis in aged mice. Behav Brain Res 2014; 272:131-40. [PMID: 25004447 DOI: 10.1016/j.bbr.2014.05.049] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2014] [Revised: 05/21/2014] [Accepted: 05/22/2014] [Indexed: 12/17/2022]
Abstract
Aging is associated with impaired learning and memory accompanied by reductions in adult hippocampal neurogenesis and brain expression of neurotrophic factors among other processes. Epigallocatechin-3-gallate (EGCG, a green tea catechin), β-alanine (β-ala, the precursor of carnosine), and exercise have independently been shown to be neuroprotective and to reduce inflammation and oxidative stress in the central nervous system. We hypothesized that EGCG, β-ala supplementation or exercise alone would improve learning and memory and increase neurogenesis in aged mice, and the combined intervention would be better than either treatment alone. Male Balb/cByJ mice (19 months) were given AIN-93M diet with or without EGCG (182mg/kg/d) and β-ala (417mg/kg/d). Half of the mice were given access to a running wheel (VWR). The first 10 days, animals received 50mg/kg bromodeoxyuridine (BrdU) daily. After 28 days, learning and memory was assessed by Morris water maze (MWM) and contextual fear conditioning (CFC). Brains were collected for immunohistochemical detection of BrdU and quantitative mRNA expression in the hippocampus. VWR increased the number of BrdU cells in the dentate gyrus, increased expression of brain-derived neurotrophic factor, decreased expression of the inflammatory cytokine interleukin-1β, and improved performance in the MWM and CFC tests. The dietary intervention reduced brain oxidative stress as measured by 4-hydroxynonenal in the cerebellum, but had no effect on BrdU labeling or behavioral performance. These results suggest that exercise, but not a diet containing EGCG and β-ala, exhibit pro-cognitive effects in aged mice when given at these doses in this relatively short time frame.
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Affiliation(s)
- Trisha E Gibbons
- Division of Nutritional Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA; Integrative Immunology and Behavior Program, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Brandt D Pence
- Department of Kinesiology and Community Health, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA; Integrative Immunology and Behavior Program, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Geraldine Petr
- Division of Nutritional Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA; Integrative Immunology and Behavior Program, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Jessica M Ossyra
- Department of Psychology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Houston C Mach
- Department of Psychology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Tushar K Bhattacharya
- Department of Psychology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Samuel Perez
- Department of Psychology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Stephen A Martin
- Department of Kinesiology and Community Health, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA; Integrative Immunology and Behavior Program, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Robert H McCusker
- Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA; Division of Nutritional Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA; Integrative Immunology and Behavior Program, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Keith W Kelley
- Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA; Division of Nutritional Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA; Integrative Immunology and Behavior Program, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Justin S Rhodes
- Department of Psychology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA; Division of Nutritional Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA; Integrative Immunology and Behavior Program, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Rodney W Johnson
- Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA; Division of Nutritional Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA; Integrative Immunology and Behavior Program, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Jeffrey A Woods
- Department of Kinesiology and Community Health, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA; Division of Nutritional Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA; Integrative Immunology and Behavior Program, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA.
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Nakanishi T, Mukai K, Hosokawa Y, Takegawa D, Matsuo T. Catechins inhibit vascular endothelial growth factor production and cyclooxygenase-2 expression in human dental pulp cells. Int Endod J 2014; 48:277-82. [PMID: 24847951 DOI: 10.1111/iej.12312] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2013] [Accepted: 05/18/2014] [Indexed: 01/08/2023]
Abstract
AIM To investigate the effect of catechins on vascular endothelial growth factor (VEGF) production and cyclooxygenase-2 (COX-2) expression in human dental pulp cells (HDPC) stimulated with bacteria-derived factors or pro-inflammatory cytokines. METHODOLOGY Morphologically fibroblastic cells established from explant cultures of healthy human dental pulp tissues were used as HDPC. HDPC pre-treated with catechins, epigallocatechin-3-gallate (EGCG) or epicatechin gallate (ECG), were exposed to lipopolysaccharide (LPS), peptidoglycan (PG), interlukin-1β (IL-1β) or tumour necrosis factor-α (TNF-α). VEGF production was examined by enzyme-linked immunosorbent assay, and COX-2 expression was assessed by immunoblot. RESULTS EGCG and ECG significantly reduced LPS- or PG-mediated VEGF production in the HDPC in a dose-dependent manner. EGCG also prevented IL-1β-mediated VEGF production. Although TNF-α did not enhance VEGF production in the dental pulp cells, treatment of 20 μg mL(-1) of EGCG decreased the level of VEGF. In addition, the catechins attenuated COX-2 expression induced by LPS and IL-1β. CONCLUSIONS The up-regulated VEGF and COX-2 expressions in the HDPC stimulated with these bacteria-derived factors or IL-1β were diminished by the treatment of EGCG and ECG. These findings suggest that the catechins may be beneficial as an anti-inflammatory tool of the treatment for pulpal inflammation.
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Affiliation(s)
- T Nakanishi
- Department of Conservative Dentistry, Institute of Health Biosciences, The University of Tokushima Graduate School, Tokushima, Japan
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Forbes-Hernández TY, Giampieri F, Gasparrini M, Mazzoni L, Quiles JL, Alvarez-Suarez JM, Battino M. The effects of bioactive compounds from plant foods on mitochondrial function: a focus on apoptotic mechanisms. Food Chem Toxicol 2014; 68:154-82. [PMID: 24680691 DOI: 10.1016/j.fct.2014.03.017] [Citation(s) in RCA: 144] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2013] [Revised: 03/09/2014] [Accepted: 03/14/2014] [Indexed: 02/06/2023]
Abstract
Mitochondria are essential organelles for cellular integrity and functionality maintenance and their imparement is implicated in the development of a wide range of diseases, including metabolic, cardiovascular, degenerative and hyperproliferative pathologies. The identification of different compounds able to interact with mitochondria for therapeutic purposes is currently becoming of primary importance. Indeed, it is well known that foods, particularly those of vegetable origin, present several constituents with beneficial effects on health. This review summarizes and updates the most recent findings concerning the mechanisms through which different dietary compounds from plant foods affect mitochondria functionality in healthy and pathological in vitro and in vivo models, paying particular attention to the pathways involved in mitochondrial biogenesis and apoptosis.
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Affiliation(s)
- Tamara Y Forbes-Hernández
- Dipartimento di Scienze Cliniche Specialistiche ed Odontostomatologiche, Sez. Biochimica, Facoltà di Medicina, Università Politecnica delle Marche, Italy
| | - Francesca Giampieri
- Dipartimento di Scienze Agrarie, Alimentari ed Ambientali, Università Politecnica delle Marche, Italy.
| | - Massimiliano Gasparrini
- Dipartimento di Scienze Cliniche Specialistiche ed Odontostomatologiche, Sez. Biochimica, Facoltà di Medicina, Università Politecnica delle Marche, Italy
| | - Luca Mazzoni
- Dipartimento di Scienze Cliniche Specialistiche ed Odontostomatologiche, Sez. Biochimica, Facoltà di Medicina, Università Politecnica delle Marche, Italy
| | - José L Quiles
- Department of Physiology, Institute of Nutrition and Food Technology "José Mataix", Biomedical Research Center, University of Granada, Spain
| | - José M Alvarez-Suarez
- Dipartimento di Scienze Cliniche Specialistiche ed Odontostomatologiche, Sez. Biochimica, Facoltà di Medicina, Università Politecnica delle Marche, Italy; Dipartimento di Scienze Agrarie, Alimentari ed Ambientali, Università Politecnica delle Marche, Italy
| | - Maurizio Battino
- Dipartimento di Scienze Cliniche Specialistiche ed Odontostomatologiche, Sez. Biochimica, Facoltà di Medicina, Università Politecnica delle Marche, Italy.
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WANG TING, ZHOU HONG, XIE HONGXIANG, MU YUAN, XU YA, LIU JINGJING, ZHANG XIAOLEI. Epigallocatechin-3-gallate inhibits TF and TNF-α expression induced by the anti-β2GPI/β2GPI complex in human THP-1 cells. Int J Mol Med 2014; 33:994-1002. [DOI: 10.3892/ijmm.2014.1635] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2013] [Accepted: 01/10/2014] [Indexed: 11/06/2022] Open
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Ansari N, Khodagholi F. Natural products as promising drug candidates for the treatment of Alzheimer's disease: molecular mechanism aspect. Curr Neuropharmacol 2014; 11:414-29. [PMID: 24381531 PMCID: PMC3744904 DOI: 10.2174/1570159x11311040005] [Citation(s) in RCA: 73] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2012] [Revised: 02/24/2013] [Accepted: 02/25/2013] [Indexed: 12/21/2022] Open
Abstract
Alzheimer’s disease (AD) is the most common neurodegenerative disorder to date, with no curative or preventive therapy. Histopathological hallmarks of AD include deposition of β-amyloid plaques and formation of neurofibrillary tangles. Extent studies on pathology of the disease have made important discoveries regarding mechanism of disease and potential therapeutic targets. Many cellular changes including oxidative stress, disruption of Ca2+ homeostasis, inflammation, metabolic disturbances, and accumulation of unfolded/misfolded proteins can lead to programmed cell death in AD. Despite intensive research, only five approved drugs are available for the management of AD. Hence, there is a need to look at alternative therapies. Use of natural products and culinary herbs in medicine has gained popularity in recent years. Several natural substances with neuroprotective effects have been widely studied. Most of these compounds have remarkable antioxidant properties and act mainly by scavenging free radical species. Some of them increase cell survival and improve cognition by directly affecting amyloidogenesis and programmed cell death pathways. Further studies on these natural products and their mechanism of action, parallel with the use of novel pharmaceutical drug design and delivery techniques, enable us to offer an addition to conventional medicine. This review discussed some natural products with potential neuroprotective properties against Aβ with respect to their mechanism of action.
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Affiliation(s)
- Niloufar Ansari
- Neuroscience Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Fariba Khodagholi
- Neuroscience Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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Moon PD, Choi IS, Go JH, Lee BJ, Kang SW, Yoon S, Han SJ, Nam SY, Oh HA, Han NR, Kim YS, Kim JS, Kim MJ, Jeong HJ, Kim HM. Inhibitory Effects of BiRyuChe-Bang on Mast Cell-Mediated Allergic Reactions and Inflammatory Cytokines Production. THE AMERICAN JOURNAL OF CHINESE MEDICINE 2013; 41:1267-82. [DOI: 10.1142/s0192415x13500857] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
BiRyuChe-bang (BRC) is a Korean prescription medicine, which has been used to treat allergic rhinitis at Kyung Hee Medical Center. In this work, we investigated the effects of BRC on mast cell-mediated allergic reactions and inflammatory cytokines production, and identified the active component of BRC. Histamine release was measured from rat peritoneal mast cells (RPMCs). Ear swelling and passive cutaneous anaphylaxis (PCA) were examined in mouse models. Phorbol 12-myristate 13-acetate (PMA) plus A23187-induced inflammatory cytokines production was measured using enzyme-linked immunosorbent assay. Reverse transcriptase-polymerase chain reaction was used for the expressions of tumor necrosis factor (TNF)-α, interleukin (IL)-6, and IL-8. Activation of nuclear factor (NF)-κB was analyzed by Western blotting. BRC significantly inhibited the compound 48/80-induced ear swelling response, histamine release from RPMCs, PCA activated by anti-dinitrophenyl IgE, and PMA plus A23187-induced inflammatory cytokines production (p < 0.05). In addition, BRC dose-dependently inhibited the mRNA expressions of TNF-α, IL-6, and IL-8 as well as the activation of NF-κB in a human mast cell line, HMC-1 cells. BRC inhibited the levels of TNF-α and IL-6 in mice induced with PCA. Several components of BRC, such as 1,8-Cineole, Linalool, Linalyl acetate, α-Pinene, and α-Terpineol, significantly inhibited the release of histamine from RPMCs (p < 0.05). Among these components, Linalyl acetate was the most effective for inhibiting histamine release. These results indicate that BRC has a potential regulatory effect on allergic and inflammatory reactions mediated by mast cells.
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Affiliation(s)
- Phil-Dong Moon
- Department of Pharmacology, College of Korean Medicine, Kyung Hee University, Seoul 130–701, Republic of Korea
| | - Il Sang Choi
- Department of Oriental Pharmacy, College of Pharmacy, Wonkwang University, Iksan 570–749, Republic of Korea
| | - Ji-Hyun Go
- Department of Pharmacology, College of Korean Medicine, Kyung Hee University, Seoul 130–701, Republic of Korea
| | - Byong-Joo Lee
- Department of Pharmacology, College of Korean Medicine, Kyung Hee University, Seoul 130–701, Republic of Korea
| | - Sang Woo Kang
- Department of Pharmacology, College of Korean Medicine, Kyung Hee University, Seoul 130–701, Republic of Korea
| | - Sunhee Yoon
- Department of Pharmacology, College of Korean Medicine, Kyung Hee University, Seoul 130–701, Republic of Korea
| | - Seung-Jun Han
- Graduate School of Korean Medicine, Wonkwang University, Iksan 570–749, Republic of Korea
| | - Sun-Young Nam
- Department of Pharmacology, College of Korean Medicine, Kyung Hee University, Seoul 130–701, Republic of Korea
| | - Hyun-A Oh
- Department of Pharmacology, College of Korean Medicine, Kyung Hee University, Seoul 130–701, Republic of Korea
| | - Na-Ra Han
- Department of Pharmacology, College of Korean Medicine, Kyung Hee University, Seoul 130–701, Republic of Korea
| | - Young-Sick Kim
- Department of Pharmacology, College of Korean Medicine, Kyung Hee University, Seoul 130–701, Republic of Korea
| | - Ju-Sung Kim
- College of Applied Life Sciences, Jeju National University, Jeju 690–756, Republic of Korea
| | - Myong-Jo Kim
- Oriental Bio-Herb Research Institute, Kangwon National University, Chuncheon 200–701, Republic of Korea
| | - Hyun-Ja Jeong
- Biochip Research Center and Inflammatory Disease Research Center, Hoseo University, Chungnam 336–795, Republic of Korea
| | - Hyung-Min Kim
- Department of Pharmacology, College of Korean Medicine, Kyung Hee University, Seoul 130–701, Republic of Korea
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Jankun J, Keck RW, Selman SH. Epigallocatechin-3-gallate prevents tumor cell implantation/growth in an experimental rat bladder tumor model. Int J Oncol 2013; 44:147-52. [PMID: 24220494 DOI: 10.3892/ijo.2013.2174] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2013] [Accepted: 10/04/2013] [Indexed: 11/06/2022] Open
Abstract
The aim of this study was to determine the efficacy of epigallocatechin-3-gallate (EGCG) (Polyphenon E®) in comparison with mitomycin C (MMC) to prevent tumor cell implantation/growth in an animal model of superficial bladder cancer and search for possible mechanism(s) of action. Female Fisher 344 rats were used to study the effects of EGCG and mitomycin C for the prevention of transitional cell tumor implantation (AY-27). Twenty rats served as a control, tumor implantation and saline wash only. Sixty rats were treated with EGCG (100, 200 and 400 µM) intravesically for 60 or 120 min after tumor implantation. Thirty other rats were divided equally and pretreated with 400 µM EGCG or saline for 120 min before tumor initiation. In a separate series of experiments, 30 rats were treated 2 weeks after tumor initiation with saline or EGCG (400 µM). In a different experiment 39 rats were treated with: saline (n=10) EGCG (n=9) 400 µM, MMC (n=10) 0.5 µM, MMC (n=10) 400 µM. Rats were sacrificed 3 weeks following treatment. Gross and histological analyses were performed on the bladders. EGCG and mitomycin C prevented intravesical tumor growth in a concentration- and time-dependent manner. EGCG pretreatment or treatment 2 weeks post tumor implantation did not have therapeutic effects. Molecular modeling suggests that EGCG inhibits urokinase and matrix metalloproteinase-9. EGCG prevents intravesical tumor implantation/growth with a slightly better efficacy than mitomycin C in this experimental model. The data suggest that EGCG lowers proteolytic activity and lowers probability of cancer cell implantation rather than direct cancer cell killing.
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Affiliation(s)
- Jerzy Jankun
- Urology Research Center, Department of Urology, College of Medicine, University of Toledo, Toledo, OH 43614, USA
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A review on the role of nutraceuticals as simple as se(2+) to complex organic molecules such as glycyrrhizin that prevent as well as cure diseases. Indian J Clin Biochem 2013; 29:119-32. [PMID: 24757291 DOI: 10.1007/s12291-013-0362-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2013] [Accepted: 06/30/2013] [Indexed: 10/26/2022]
Abstract
Nutraceuticals are nutritional medicines which are present in edible food items. Most of them are antioxidants with various other biological properties viz, anti inflammatory, anti atherogenic, anticancer, anti viral, anti aging properties etc. They are as simple as minerals like Se(2+) to complex organic molecules such as glycyrrhizin (Ca(2+), K(+) salts of glycyrrhizic acid). They can prevent as well as cure various diseases. Most of the medical people are not aware of the importance of the nutraceuticals as such matters are not part of their text books. Many still think that vitamins are the major nutritional medicines. Actually other dietary principles like terpenes, carotenes, phytosterols, polyphenols, flavanoids, di and poly sulphides, their sulfoxides and their precursor amino acids are necessary to scavenge free radicals in the body which are reactive oxygen species to protect and maintain the vitamin levels in the body. They down regulate the activities of those enzymes which are increased in diseases and they increase those that remove oxidants and detoxify carcinogens. They are immune boosters too. Recently glucosinolates, non toxic alkaloids, certain proteins and even fiber are included in the list of nutraceuticals.
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Ayissi VBO, Ebrahimi A, Schluesenner H. Epigenetic effects of natural polyphenols: a focus on SIRT1-mediated mechanisms. Mol Nutr Food Res 2013; 58:22-32. [PMID: 23881751 DOI: 10.1002/mnfr.201300195] [Citation(s) in RCA: 82] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2013] [Revised: 05/12/2013] [Accepted: 05/14/2013] [Indexed: 12/21/2022]
Abstract
Polyphenols are a class of natural compounds widely distributed in fruits, vegetables, and plants. They have been reported to possess a wide range of activities in prevention and alleviation of various diseases like cancer, neuroinflammation, diabetes, and aging. Polyphenols are effective against chronic diseases and recent reports indicated strong epigenetic effects of polyphenols. Most of the studies investigating epigenetic effects of natural polyphenols have focused on their beneficial effects in cancer treatment. However, epigenetic defects have been demonstrated in many other diseases as well, and application of polyphenols to modulate the epigenome is becoming an interesting field of research. This review summarizes the effects of natural polyphenols in modulating epigenetic-related enzymes as well as their effect in prevention and treatment of chronic diseases with a focus on SIRT1 modulation. We have also discussed the relation between the structure and function of epigenetic-modifying polyphenols.
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Affiliation(s)
- Vincent B Owona Ayissi
- Division of Immunopathology of the Nervous System, Department of Neuropathology, Institute of Pathology, University of Tübingen, Tübingen, Germany; Laboratory of Pharmacology and Toxicology, University of Yaoundé I, Cameroon
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