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Zhang Y, Hu X, Zou LQ. Flavonoids as therapeutic agents for epilepsy: unveiling anti-inflammatory and antioxidant pathways for novel treatments. Front Pharmacol 2024; 15:1457284. [PMID: 39329119 PMCID: PMC11424894 DOI: 10.3389/fphar.2024.1457284] [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: 06/30/2024] [Accepted: 08/30/2024] [Indexed: 09/28/2024] Open
Abstract
Epilepsy, a chronic neurological disorder affecting millions globally, is often exacerbated by neuroinflammation and oxidative stress. Existing antiepileptic drugs primarily manage symptoms, leaving the disease's progression largely unaddressed. Flavonoids, ubiquitous plant metabolites with potent anti-inflammatory and antioxidant properties, show promise in epilepsy treatment. Unlike conventional therapies, they target multiple pathophysiological processes simultaneously, offering a comprehensive approach to this complex neurological disorder. This review explores the dual role of flavonoids in mitigating neuroinflammation and reducing oxidative stress through various molecular pathways. By inhibiting key inflammatory mediators and pathways such as NF-κB, MAPK, JNK, and JAK, flavonoids offer neuronal protection. They enhance the body's natural antioxidant defenses by modulating enzyme activities, including superoxide dismutase, catalase, and glutathione peroxidase. Moreover, flavonoids influence crucial antioxidant response pathways like PI3K/AKT, Nrf2, JNK, and PKA. Despite their therapeutic promise, the low bioavailability of flavonoids poses a considerable challenge. However, cutting-edge strategies, including nanotechnology and chemical modifications, are underway to improve their bioavailability and therapeutic efficacy. These advancements support the potential of flavonoids as a valuable addition to epilepsy treatment strategies.
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Affiliation(s)
- Ya Zhang
- Department of Emergency Medicine, West China Hospital, Sichuan University/West China School of Nursing, Sichuan University, Chengdu, China
| | - Xizhuo Hu
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Li-Qun Zou
- Department of Emergency Medicine, West China Hospital, Sichuan University/West China School of Nursing, Sichuan University, Chengdu, China
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2
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Singh A, Kumar Singh N. Pre-clinical Evidence-based Neuroprotective Potential of Naringin against Alzheimer's Disease-like Pathology: A Comprehensive Review. Curr Pharm Biotechnol 2024; 25:1112-1123. [PMID: 37526460 DOI: 10.2174/1389201024666230801095526] [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: 01/31/2023] [Revised: 06/06/2023] [Accepted: 06/20/2023] [Indexed: 08/02/2023]
Abstract
Neurodegenerative disorders (NDs) are a group of progressive, chronic, and disabling disorders that are highly prevalent and the incidence is on a constant rise globally. Alzheimer's disease (AD), one of the most common neurodegenerative disorders is hallmarked by cognitive impairment, amyloid-β (Aβ) deposition, hyperphosphorylation of tau protein, cholinergic dysfunction, mitochondrial toxicity, and neurodegeneration. Available therapeutic agents only provide symptomatic relief and their use are limited due to serious side effects. Recent research has recognized flavonoids as potential multi-target biomolecules that can reduce the pathogenesis of AD. Naringin, a natural citrus flavonoid has been traditionally used to treat various NDs including AD, and has gained special attention because exhibits a neuroprotective effect by affecting numerous signaling pathways with minimum adverse effects. Naringin reduces deposition of Aβ, hyperphosphorylation of tau protein, cholinergic dysfunction, oxidative stress burden, mitochondrial toxicity, the activity of glutamate receptors, and apoptosis of the neuronal cells. Additionally, it reduces the expression of phosphorylated-P38/P38 and the NF-κB signaling pathway, showing that a wide range of molecular targets is involved in naringin's neuroprotective action. The present study describes the possible pharmacological targets, signaling pathways, and molecular mechanisms of naringin involved in neuroprotection against AD-like pathology. Based on the above pre-clinical reports it can be concluded that naringin could be an alternative therapeutic agent for the management of AD-like manifestation. Thus, there is a strong recommendation to perform more preclinical and clinical studies to develop naringin as a novel molecule that could be a multi-target drug to counteract AD.
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Affiliation(s)
- Ashini Singh
- Division of Pharmacology, Institute of Pharmaceutical Research, GLA University, Mathura, 281406, India
| | - Niraj Kumar Singh
- Division of Pharmacology, Institute of Pharmaceutical Research, GLA University, Mathura, 281406, India
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3
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Jiang H, Zhang M, Lin X, Zheng X, Qi H, Chen J, Zeng X, Bai W, Xiao G. Biological Activities and Solubilization Methodologies of Naringin. Foods 2023; 12:2327. [PMID: 37372538 DOI: 10.3390/foods12122327] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Revised: 06/02/2023] [Accepted: 06/06/2023] [Indexed: 06/29/2023] Open
Abstract
Naringin (NG), a natural flavanone glycoside, possesses a multitude of pharmacological properties, encompassing anti-inflammatory, sedative, antioxidant, anticancer, anti-osteoporosis, and lipid-lowering functions, and serves as a facilitator for the absorption of other drugs. Despite these powerful qualities, NG's limited solubility and bioavailability primarily undermine its therapeutic potential. Consequently, innovative solubilization methodologies have received considerable attention, propelling a surge of scholarly investigation in this arena. Among the most promising solutions is the enhancement of NG's solubility and physiological activity without compromising its inherent active structure, therefore enabling the formulation of non-toxic and benign human body preparations. This article delivers a comprehensive overview of NG and its physiological activities, particularly emphasizing the impacts of structural modification, solid dispersions (SDs), inclusion compound, polymeric micelle, liposomes, and nanoparticles on NG solubilization. By synthesizing current research, this research elucidates the bioavailability of NG, broadens its clinical applicability, and paves the way for further exploration and expansion of its application spectrum.
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Affiliation(s)
- Hao Jiang
- Guangdong Provincial Key Laboratory of Lingnan Specialty Food Science and Technology, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
- Key Laboratory of Green Processing and Intelligent Manufacturing of Lingnan Specialty Food, Ministry of Agriculture, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
- Academy of Contemporary Agricultural Engineering Innovations, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
- College of Light Industry and Food Sciences, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
| | - Mutang Zhang
- College of Light Industry and Food Sciences, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
| | - Xiaoling Lin
- College of Light Industry and Food Sciences, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
| | - Xiaoqing Zheng
- College of Light Industry and Food Sciences, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
| | - Heming Qi
- Science and Technology Research Center of China Customs, Beijing 100026, China
| | - Junping Chen
- Meizhou Feilong Fruit Co., Ltd., Meizhou 514600, China
| | - Xiaofang Zeng
- Guangdong Provincial Key Laboratory of Lingnan Specialty Food Science and Technology, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
- Key Laboratory of Green Processing and Intelligent Manufacturing of Lingnan Specialty Food, Ministry of Agriculture, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
- Academy of Contemporary Agricultural Engineering Innovations, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
- College of Light Industry and Food Sciences, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
| | - Weidong Bai
- Guangdong Provincial Key Laboratory of Lingnan Specialty Food Science and Technology, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
- Key Laboratory of Green Processing and Intelligent Manufacturing of Lingnan Specialty Food, Ministry of Agriculture, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
- Academy of Contemporary Agricultural Engineering Innovations, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
- College of Light Industry and Food Sciences, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
| | - Gengsheng Xiao
- Guangdong Provincial Key Laboratory of Lingnan Specialty Food Science and Technology, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
- Key Laboratory of Green Processing and Intelligent Manufacturing of Lingnan Specialty Food, Ministry of Agriculture, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
- Academy of Contemporary Agricultural Engineering Innovations, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
- College of Light Industry and Food Sciences, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
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4
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Naringin Prevents Cognitive Dysfunction in Aging Rats by Inhibiting Toll-Like Receptor 4 (TLR4)/NF- κB Pathway and Endoplasmic Reticulum Stress. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2023; 2023:2919811. [PMID: 36865741 PMCID: PMC9974290 DOI: 10.1155/2023/2919811] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 08/23/2022] [Accepted: 09/23/2022] [Indexed: 02/25/2023]
Abstract
Objective Naringin is a flavonoid derived from Chinese herbs. According to earlier studies, naringin may have the potential to alleviate aging-induced cognitive dysfunction. Therefore, this study attempted to explore the protective effect and underlying mechanism of naringin on aging rats with cognitive dysfunction. Methods After the construction of a model of aging rats with cognitive dysfunction through subcutaneous injection of D-galactose (D-gal; 150 mg/kg), intragastric administration of naringin (100 mg/kg) was performed for treatment. Behavioral tests, including Morris water maze test (MWM), novel object recognition test (NORT), and fear conditioning test, were used to measure the cognitive function; ELISA and biochemical tests were used to determine the levels of interleukin (IL)-1β, IL-6, monocyte chemoattractant protein-1 (MCP-1), brain-derived neurotrophic factor (BDNF), nerve growth factor (NGF), malondialdehyde (MDA), and glutathione peroxidase (GSH-Px) in the hippocampus of rats in each group, respectively; H&E staining was used to observe the pathological changes in the hippocampus; Western blot was used to examine the expression of toll-like receptor 4 (TLR4)/NF-κB pathway-related proteins and endoplasmic reticulum (ER) stress-related proteins in the hippocampus. Results The model was successfully constructed by subcutaneous injection of D-gal (150 mg/kg). The behavioral test results showed that naringin could ameliorate the cognitive dysfunction and alleviate the histopathological damage of hippocampus. Moreover, naringin significantly improve the inflammatory response (the levels of IL-1β, IL-6, and MCP-1 were decreased), oxidative stress response (MDA level was increased while GSH-Px activity was decreased), and ER stress (the expression of glucose-regulated protein 78 (GRP78), C/-EBP homologous protein (CHOP), and transcription factor 6 (ATF6) expression was downregulated), and increased the levels of neurotrophic factors BDNF and NGF in D-gal rats. Besides, further mechanistic studies revealed the downregulation of naringin on TLR4/NF-κB pathway activity. Conclusion Naringin may inhibit inflammatory response, oxidative stress, and ER stress by downregulating TLR4/NF-κB pathway activity, thereby improving cognitive dysfunction and alleviating histopathological damage of hippocampus in aging rats. Briefly, naringin is an effective drug for the treatment of cognitive dysfunction.
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A Comprehensive Review on Anti-Inflammatory Response of Flavonoids in Experimentally-Induced Epileptic Seizures. Brain Sci 2023; 13:brainsci13010102. [PMID: 36672083 PMCID: PMC9856497 DOI: 10.3390/brainsci13010102] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 12/23/2022] [Accepted: 12/31/2022] [Indexed: 01/06/2023] Open
Abstract
Flavonoids, a group of natural compounds with phenolic structure, are becoming popular as alternative medicines obtained from plants. These compounds are reported to have various pharmacological properties, including attenuation of inflammatory responses in multiple health issues. Epilepsy is a disorder of the central nervous system implicated with the activation of the inflammatory cascade in the brain. The aim of the present study was to summarize the role of various neuroinflammatory mediators in the onset and progression of epilepsy, and, thereafter, to discuss the flavonoids and their classes, including their biological properties. Further, we highlighted the modulation of anti-inflammatory responses achieved by these substances in different forms of epilepsy, as evident from preclinical studies executed on multiple epilepsy models. Overall, the review summarizes the available evidence of the anti-inflammatory potential of various flavonoids in epilepsy.
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Goyal A, Verma A, Dubey N, Raghav J, Agrawal A. Naringenin: A prospective therapeutic agent for Alzheimer's and Parkinson's disease. J Food Biochem 2022; 46:e14415. [PMID: 36106706 DOI: 10.1111/jfbc.14415] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Revised: 07/01/2022] [Accepted: 08/16/2022] [Indexed: 01/13/2023]
Abstract
Neurodegenerative disorders (NDs) are a cluster of progressive, severe, and disabling disorders that affect millions of people worldwide and are on the surge. These disorders are characterized by the gradual loss of a selectively vulnerable group of neurons. Due to the complex pathophysiological mechanisms behind neurodegeneration and despite enormous efforts and understanding of the occurrence and progression of NDs, there is still a lack of an effective treatment for such diseases. Therefore, the development of a new therapeutic strategy for NDs is an unmet clinical need. Various natural compounds extracted from medicinal plants or fruits have shown promising activities in treating different types of NDs by targeting multiple signaling pathways. Among natural entities, flavonoids have incited a rise in public and scientific interest in recent years because of their purported health-promoting effects. Dietary supplementation of flavonoids has been shown to mitigate the severity of NDs such as Parkinson's disease (PD), Alzheimer's disease (AD), and dementia by their antioxidant effects. Naringenin is a citrus flavonoid that is known to possess numerous biological activities like antioxidant, anti-proliferative, and anti-inflammatory activities. Therefore, naringenin has emerged as a potential therapeutic agent that exerts preventive and curative effects on several neurological disorders. Increasing evidence has attained special attention on the variety of therapeutic targets along with complex signaling pathways of naringenin, which suggest its possible therapeutic applications in several NDs. Derived from the results of several pre-clinical research and considering the therapeutic effects of this compound, this review focuses on the potential role of naringenin as a pharmacological agent for the treatment and management of Alzheimer's and Parkinson's disease. The overall neuroprotective effects and different possible underlying mechanisms related to naringenin are discussed. In the light of substantial evidence for naringenin's neuroprotective efficacy in several experimental paradigms, this review suggests that this molecule should be investigated further as a viable candidate for the management of Alzheimer's and Parkinson's disease, with an emphasis on mechanistic and clinical trials to determine its efficacy. PRACTICAL APPLICATIONS: Naringenin is a flavanone, aglycone of Naringin, predominantly found in citrus fruits with a variety of pharmacological actions. Naringenin has been shown to exhibit remarkable therapeutic efficacy and has emerged as a potential therapeutic agent for the management of a variety of diseases such as various heart, liver, and metabolic disorders. Similarly, it has shown efficacy in neurodegenerative illnesses. Therefore, this review enables us to better understand the neuroprotective effects and different possible underlying mechanisms of naringenin. Also, this review provides a new indication to manage the symptoms of NDs like AD and PD. Furthermore, naringenin will be useful in the field of medicine as a new active ingredient for the treatment of neurodegenerative disorders like AD and PD.
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Affiliation(s)
- Ahsas Goyal
- Institute of Pharmaceutical Research, GLA University, Mathura, India
| | - Aanchal Verma
- Institute of Pharmaceutical Research, GLA University, Mathura, India
| | - Nandini Dubey
- Institute of Pharmaceutical Research, GLA University, Mathura, India
| | - Jyoti Raghav
- Institute of Pharmaceutical Research, GLA University, Mathura, India
| | - Anant Agrawal
- Institute of Pharmaceutical Research, GLA University, Mathura, India
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7
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Hassan HM, Elnagar MR, Abdelrazik E, Mahdi MR, Hamza E, Elattar EM, ElNashar EM, Alghamdi MA, Al-Qahtani Z, Al-Khater KM, Aldahhan RA, ELdesoqui M. Neuroprotective effect of naringin against cerebellar changes in Alzheimer's disease through modulation of autophagy, oxidative stress and tau expression: An experimental study. Front Neuroanat 2022; 16:1012422. [PMID: 36312298 PMCID: PMC9615142 DOI: 10.3389/fnana.2022.1012422] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Accepted: 09/26/2022] [Indexed: 11/13/2022] Open
Abstract
Alzheimer's disease (AD) is a neurodegenerative disorder characterized by gradual cognitive decline. Strong antioxidants that inhibit free radicals, such as polyphenols, reduce the likelihood of developing oxidative stress-related degenerative diseases such as AD. Naringin, a flavonoid found in citrus fruit shown to be neuroprotective, reduce oxidative damage and minimize histopathological changes caused by ischemic reperfusion, enhance the long-term memory in AD animal models. This work aimed to comprehend the role of naringin in the defense of the cerebellum against aluminum chloride (AlCl3)-induced AD in rats by investigating the behavioral, neurochemical, immunohistochemical, and molecular mechanisms that underpin its possible neuroprotective effects. Twenty-four adult albino rats were divided into four groups (n = 6/group): (i) Control (C) received saline per oral (p.o.), (ii) Naringin(N)-received naringin (100 mg/kg/d) p.o, (iii) AlCl3-recived AlCl3 (100 mg/kg/d) p.o and (iv) AlCl3 + Naringin (AlCl3 + N) received both AlCl3 and naringin p.o for 21 days. Behavioral tests showed an increase in the time to reach the platform in Morris water maze, indicating memory impairment in the AlCl3-treated group, but co-administration of naringin showed significant improvement. The Rotarod test demonstrated a decrease in muscle coordination in the AlCl3-treated group, while it was improved in the AlCl3 + N group. Neurochemical analysis of the hippocampus and cerebellum revealed that AlCl3 significantly increased lipid peroxidation and oxidative stress and decreased levels of reduced glutathione. Administration of naringin ameliorated these neurochemical changes via its antioxidant properties. Cerebellar immunohistochemical expression for microtubule assembly (tau protein) and oxidative stress (iNOS) increased in A1C13-treated group. On the other hand, the expression of the autophagic marker (LC3) in the cerebellum showed a marked decline in AlCl3-treated group. Western blot analysis confirmed the cerebellar immunohistochemical findings. Collectively, these findings suggested that naringin could contribute to the combat of oxidative and autophagic stress in the cerebellum of AlCl3-induced AD.
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Affiliation(s)
- Hend M. Hassan
- Department of Human Anatomy and Embryology, Faculty of Medicine, Mansoura University, Mansoura, Egypt
| | - Mohamed R. Elnagar
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Al-Azhar University, Cairo, Egypt
- Department of Pharmacology, College of Pharmacy, The Islamic University, Najaf, Iraq
| | - Eman Abdelrazik
- Department of Forensic Medicine and Clinical Toxicology, Faculty of Medicine, Mansoura University, Mansoura, Egypt
| | - Mohamed R. Mahdi
- Department of Human Anatomy and Embryology, Faculty of Medicine, Mansoura University, Mansoura, Egypt
| | - Eman Hamza
- Department of Medical Biochemistry and Molecular Biology, Faculty of Medicine, Mansoura University, Mansoura, Egypt
- Department of Medical Biochemistry and Molecular Biology, Faculty of Medicine, Horus University, Damietta, Egypt
| | - Eman M. Elattar
- Department of Pharmacognosy, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
| | - Eman Mohamed ElNashar
- Department of Anatomy, College of Medicine, King Khalid University, Abha, Saudi Arabia
- Department of Histology and Cell Biology, Faculty of Medicine, Benha University, Banha, Egypt
| | - Mansour Abdullah Alghamdi
- Department of Anatomy, College of Medicine, King Khalid University, Abha, Saudi Arabia
- Genomics and Personalized Medicine Unit, College of Medicine, King Khalid University, Abha, Saudi Arabia
| | - Zainah Al-Qahtani
- Neurology Section, Department of Internal Medicine, College of Medicine, King Khalid University, Abha, Saudi Arabia
| | - Khulood Mohammed Al-Khater
- Department of Anatomy, College of Medicine, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
| | - Rashid A. Aldahhan
- Department of Anatomy, College of Medicine, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
| | - Mamdouh ELdesoqui
- Department of Human Anatomy and Embryology, Faculty of Medicine, Mansoura University, Mansoura, Egypt
- Department of Basic Medical Sciences, College of Medicine, AlMaarefa University, Riyadh, Saudi Arabia
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8
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Asgharian P, Quispe C, Herrera-Bravo J, Sabernavaei M, Hosseini K, Forouhandeh H, Ebrahimi T, Sharafi-Badr P, Tarhriz V, Soofiyani SR, Helon P, Rajkovic J, Durna Daştan S, Docea AO, Sharifi-Rad J, Calina D, Koch W, Cho WC. Pharmacological effects and therapeutic potential of natural compounds in neuropsychiatric disorders: An update. Front Pharmacol 2022; 13:926607. [PMID: 36188551 PMCID: PMC9521271 DOI: 10.3389/fphar.2022.926607] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Accepted: 08/03/2022] [Indexed: 11/13/2022] Open
Abstract
Neuropsychiatric diseases are a group of disorders that cause significant morbidity and disability. The symptoms of psychiatric disorders include anxiety, depression, eating disorders, autism spectrum disorders (ASD), attention-deficit/hyperactivity disorder, and conduct disorder. Various medicinal plants are frequently used as therapeutics in traditional medicine in different parts of the world. Nowadays, using medicinal plants as an alternative medication has been considered due to their biological safety. Despite the wide range of medications, many patients are unable to tolerate the side effects and eventually lose their response. By considering the therapeutic advantages of medicinal plants in the case of side effects, patients may prefer to use them instead of chemical drugs. Today, the use of medicinal plants in traditional medicine is diverse and increasing, and these plants are a precious heritage for humanity. Investigation about traditional medicine continues, and several studies have indicated the basic pharmacology and clinical efficacy of herbal medicine. In this article, we discuss five of the most important and common psychiatric illnesses investigated in various studies along with conventional therapies and their pharmacological therapies. For this comprehensive review, data were obtained from electronic databases such as MedLine/PubMed, Science Direct, Web of Science, EMBASE, DynaMed Plus, ScienceDirect, and TRIP database. Preclinical pharmacology studies have confirmed that some bioactive compounds may have beneficial therapeutic effects in some common psychiatric disorders. The mechanisms of action of the analyzed biocompounds are presented in detail. The bioactive compounds analyzed in this review are promising phytochemicals for adjuvant and complementary drug candidates in the pharmacotherapy of neuropsychiatric diseases. Although comparative studies have been carefully reviewed in the preclinical pharmacology field, no clinical studies have been found to confirm the efficacy of herbal medicines compared to FDA-approved medicines for the treatment of mental disorders. Therefore, future clinical studies are needed to accelerate the potential use of natural compounds in the management of these diseases.
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Affiliation(s)
- Parina Asgharian
- Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Cristina Quispe
- Facultad de Ciencias de la Salud, Universidad Arturo Prat, Iquique, Chile
| | - Jesús Herrera-Bravo
- Departamento de Ciencias Básicas, Facultad de Ciencias, Universidad Santo Tomas, Santo Tomas, Chile
- Center of Molecular Biology and Pharmacogenetics, Scientific and Technological Bioresource Nucleus, Universidad de La Frontera, Temuco, Chile
| | - Mahsa Sabernavaei
- Department of Pharmacognosy and Pharmaceutical Biotechnology, School of Pharmacy, Iran University of Medical Sciences, Tehran, Iran
| | - Kamran Hosseini
- Student Research Committee, Shiraz University of Medical Sciences, Shiraz, Iran
- Department of Molecular Medicine, Faculty of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Haleh Forouhandeh
- Infectious and Tropical Diseases Research Center, Biomedicine Institute, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Tahereh Ebrahimi
- Infectious and Tropical Diseases Research Center, Biomedicine Institute, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Paria Sharafi-Badr
- Department of Pharmacognosy, School of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Vahideh Tarhriz
- Infectious and Tropical Diseases Research Center, Biomedicine Institute, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Saiedeh Razi Soofiyani
- Infectious and Tropical Diseases Research Center, Biomedicine Institute, Tabriz University of Medical Sciences, Tabriz, Iran
- Clinical Research Development Unit of Sina Educational, Research and Treatment Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Paweł Helon
- Branch in Sandomierz, Jan Kochanowski University of Kielce, Sandomierz, Poland
| | - Jovana Rajkovic
- Medical Faculty, Institute of Pharmacology, Clinical Pharmacology and Toxicology, University of Belgrade, Belgrade, Serbia
| | - Sevgi Durna Daştan
- Department of Biology, Faculty of Science, Sivas Cumhuriyet University, Sivas, Turkey
- Beekeeping Development Application and Research Center, Sivas Cumhuriyet University, Sivas, Turkey
| | - Anca Oana Docea
- Department of Toxicology, University of Medicine and Pharmacy of Craiova, Craiova, Romania
| | | | - Daniela Calina
- Department of Clinical Pharmacy, University of Medicine and Pharmacy of Craiova, Craiova, Romania
| | - Wojciech Koch
- Department of Food and Nutrition, Medical University of Lublin, Lublin, Poland
| | - William C. Cho
- Department of Clinical Oncology, Queen Elizabeth Hospital, Kowloon, Hong Kong SAR, China
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9
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Yang M, Lin P, Jing W, Guo H, Chen H, Chen Y, Guo Y, Gu Y, He M, Wu J, Jiang X, Zou Z, Xu X, Chen C, Xiao F, Wang X, Tian X. Beclin1 Deficiency Suppresses Epileptic Seizures. Front Mol Neurosci 2022; 15:807671. [PMID: 35935339 PMCID: PMC9354790 DOI: 10.3389/fnmol.2022.807671] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Accepted: 06/17/2022] [Indexed: 01/18/2023] Open
Abstract
Epilepsy is a common disease of the nervous system. Autophagy is a degradation process involved in epilepsy, and in turn, seizures can activate autophagy. Beclin1 plays a critical role in autophagy and participates in numerous physiological and pathological processes. However, the mechanism underlying the effect of Beclin1 on epilepsy remains unclear. In this study, we detected increased expression of Beclin1 in brain tissues from patients with temporal lobe epilepsy (TLE). Heterozygous disruption of beclin1 decreased susceptibility to epilepsy and suppressed seizure activity in two mouse epilepsy models. We further illustrated for the first time that heterozygous disruption of beclin1 suppresses excitatory synaptic transmission, which may be caused by a decreased dendritic spine density. These findings suggest for the first time that the regulation of Beclin1 may serve as a strategy for antiepileptic therapy. In addition, Beclin1 participates in synaptic transmission, and the development of dendritic spines may be a biological function of Beclin1 independent of its role in autophagy.
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Affiliation(s)
- Min Yang
- Chongqing Key Laboratory of Neurology, Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Peijia Lin
- Chongqing Key Laboratory of Neurology, Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Wei Jing
- Chongqing Key Laboratory of Neurology, Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Haokun Guo
- Chongqing Key Laboratory of Neurology, Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Hongnian Chen
- Chongqing Key Laboratory of Neurology, Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Yuanyuan Chen
- Chongqing Key Laboratory of Neurology, Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Yi Guo
- Chongqing Key Laboratory of Neurology, Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Yixue Gu
- Chongqing Key Laboratory of Neurology, Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Miaoqing He
- Chongqing Key Laboratory of Neurology, Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Junhong Wu
- Chongqing Key Laboratory of Neurology, Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Xuejun Jiang
- Center of Experimental Teaching for Public Health, Experimental Teaching and Management Center, Chongqing Medical University, Chongqing, China
- Research Center for Environment and Human Health, School of Public Health, Chongqing Medical University, Chongqing, China
| | - Zhen Zou
- Molecular Biology Laboratory of Respiratory Diseases, Institute of Life Sciences, Chongqing Medical University, Chongqing, China
- Research Center for Environment and Human Health, School of Public Health, Chongqing Medical University, Chongqing, China
| | - Xin Xu
- Chongqing Key Laboratory of Neurology, Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Chengzhi Chen
- Research Center for Environment and Human Health, School of Public Health, Chongqing Medical University, Chongqing, China
- Department of Occupational and Environmental Health, School of Public Health and Management, Chongqing Medical University, Chongqing, China
- *Correspondence: Chengzhi Chen,
| | - Fei Xiao
- Chongqing Key Laboratory of Neurology, Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
- Fei Xiao,
| | - Xuefeng Wang
- Chongqing Key Laboratory of Neurology, Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
- Xuefeng Wang,
| | - Xin Tian
- Chongqing Key Laboratory of Neurology, Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
- Xin Tian,
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Ansari B, Aschner M, Hussain Y, Efferth T, Khan H. Suppression of colorectal carcinogenesis by naringin. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2022; 96:153897. [PMID: 35026507 DOI: 10.1016/j.phymed.2021.153897] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Revised: 12/13/2021] [Accepted: 12/18/2021] [Indexed: 06/14/2023]
Abstract
BACKGROUND Colorectal cancer is the third most malignant cancer worldwide. Despite novel treatment options, the incidence and mortality rates of colon cancer continue to increase in most countries, especially in US, European and Asian countries. Colorectal carcinogenesis is multifactorial, including dietary and genetic factors, as well as lacking physical activity. Vegetables and fruits contain high amounts of secondary metabolites, which might reduce the risk for colorectal carcinogenesis. Flavonoids are important bioactive polyphenolic compounds. There are more than 4,000 different flavonoids, including flavanones, flavonoids, isoflavonoids, flavones, and catechins in a large variety of plant. HYPOTHESIS Among various other flavonoids, naringin in Citrus fruits has been a subject of intense scrutiny for its activity against many types of cancer, including colorectal cancer. We hypothesize that naringin is capable to inhibit the growth of transformed colonocytes and to induce programmed cell death in colon cancer cells. RESULTS We comprehensively review the inhibitory effects of naringin on colorectal cancers and address the underlying mechanistic pathways such as NF-κB/IL-6/STAT3, PI3K/AKT/mTOR, apoptosis, NF-κB-COX-2-iNOS, and β-catenin pathways. CONCLUSION Naringin suppresses colorectal inflammation and carcinogenesis by various signaling pathways. Randomized clinical trials are needed to determine their effectiveness in combating colorectal cancer.
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Affiliation(s)
- Bushra Ansari
- Department of Pharmacy, Abdul Wali Khan University Mardan 23200, Pakistan
| | - Michael Aschner
- Department of Molecular Pharmacology, Albert Einstein College of Medicine, Bronx, NY 10461, USA
| | - Yaseen Hussain
- College of Pharmaceutical Sciences, Soochow University, Jiangsu, 221400, P R China
| | - Thomas Efferth
- Department of Pharmaceutical Biology, Institute of Pharmaceutical and Biomedical Sciences, Johannes Gutenberg University Staudinger Weg 5, 55128 Mainz, Germany
| | - Haroon Khan
- Department of Pharmacy, Abdul Wali Khan University Mardan 23200, Pakistan
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11
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The Beneficial Role of Natural Endocrine Disruptors: Phytoestrogens in Alzheimer's Disease. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:3961445. [PMID: 34527172 PMCID: PMC8437597 DOI: 10.1155/2021/3961445] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Accepted: 08/17/2021] [Indexed: 01/14/2023]
Abstract
Alzheimer's disease (AD) is the most common form of dementia with a growing incidence rate primarily among the elderly. It is a neurodegenerative, progressive disorder leading to significant cognitive loss. Despite numerous pieces of research, no cure for halting the disease has been discovered yet. Phytoestrogens are nonestradiol compounds classified as one of the endocrine-disrupting chemicals (EDCs), meaning that they can potentially disrupt hormonal balance and result in developmental and reproductive abnormalities. Importantly, phytoestrogens are structurally, chemically, and functionally akin to estrogens, which undoubtedly has the potential to be detrimental to the organism. What is intriguing, although classified as EDCs, phytoestrogens seem to have a beneficial influence on Alzheimer's disease symptoms and neuropathologies. They have been observed to act as antioxidants, improve visual-spatial memory, lower amyloid-beta production, and increase the growth, survival, and plasticity of brain cells. This review article is aimed at contributing to the collective understanding of the role of phytoestrogens in the prevention and treatment of Alzheimer's disease. Importantly, it underlines the fact that despite being EDCs, phytoestrogens and their use can be beneficial in the prevention of Alzheimer's disease.
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12
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Borowiec K, Michalak A. Flavonoids from edible fruits as therapeutic agents in neuroinflammation - a comprehensive review and update. Crit Rev Food Sci Nutr 2021; 62:6742-6760. [PMID: 33783286 DOI: 10.1080/10408398.2021.1905604] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Neuroinflammation is a key process in the pathogenesis of many neurological disorders, i.e. Alzheimer's disease and Parkinson's disease. However, there are no anti-inflammatory medical interventions recommended so far in the treatment of neuroinflammation-related brain disorders. Therefore, the burden of searching for effective and safe antineuroinflammatory agents is well founded, especially in the aging society. Compounds of plant origin, mainly (poly)phenols, have attracted considerable attention in recent years. Notably, the role of flavonoids in ameliorating neuroinflammation is in the limelight. Thus, we used comprehensive literature retrieval to summarize the effects and active components of edible fruits and their phenolic compounds. As a result, this review presents a valuable summary of results of in vitro, ex vivo, and in vivo studies on the antineuroinflammatory effects of edible fruits and their (poly)phenolic extracts as well as dietary flavonoids and other selected (poly)phenols based on the detailed description of foregoing studies. Additionally, problems resulting from the limited bioavailability of (poly)phenols were discussed.
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Affiliation(s)
- Kamila Borowiec
- Department of Biotechnology, Microbiology and Human Nutrition, University of Life Sciences in Lublin, Lublin, Poland
| | - Agnieszka Michalak
- Independent Laboratory of Behavioral Studies, Medical University of Lublin, Lublin, Poland
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Budel RG, da Silva DA, Moreira MP, Dalcin AJF, da Silva AF, Nazario LR, Majolo JH, Lopes LQS, Santos RCV, Antunes Soares FA, da Silva RS, Gomes P, Boeck CR. Toxicological evaluation of naringin-loaded nanocapsules in vitro and in vivo. Colloids Surf B Biointerfaces 2020; 188:110754. [DOI: 10.1016/j.colsurfb.2019.110754] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Revised: 11/27/2019] [Accepted: 12/20/2019] [Indexed: 02/06/2023]
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Uddin MS, Kabir MT, Niaz K, Jeandet P, Clément C, Mathew B, Rauf A, Rengasamy KR, Sobarzo-Sánchez E, Ashraf GM, Aleya L. Molecular Insight into the Therapeutic Promise of Flavonoids against Alzheimer's Disease. Molecules 2020; 25:molecules25061267. [PMID: 32168835 PMCID: PMC7143946 DOI: 10.3390/molecules25061267] [Citation(s) in RCA: 74] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Revised: 03/05/2020] [Accepted: 03/10/2020] [Indexed: 12/12/2022] Open
Abstract
Alzheimer’s disease (AD) is one of the utmost chronic neurodegenerative disorders, which is characterized from a neuropathological point of view by the aggregates of amyloid beta (Aβ) peptides that are deposited as senile plaques and tau proteins which form neurofibrillary tangles (NFTs). Even though advancement has been observed in order to understand AD pathogenesis, currently available therapeutic methods can only deliver modest symptomatic relief. Interestingly, naturally occurring dietary flavonoids have gained substantial attention due to their antioxidative, anti-inflammatory, and anti-amyloidogenic properties as alternative candidates for AD therapy. Experimental proof provides support to the idea that some flavonoids might protect AD by interfering with the production and aggregation of Aβ peptides and/or decreasing the aggregation of tau. Flavonoids have the ability to promote clearance of Aβ peptides and inhibit tau phosphorylation by the mTOR/autophagy signaling pathway. Moreover, due to their cholinesterase inhibitory potential, flavonoids can represent promising symptomatic anti-Alzheimer agents. Several processes have been suggested for the aptitude of flavonoids to slow down the advancement or to avert the onset of Alzheimer’s pathogenesis. To enhance cognitive performance and to prevent the onset and progress of AD, the interaction of flavonoids with various signaling pathways is proposed to exert their therapeutic potential. Therefore, this review elaborates on the probable therapeutic approaches of flavonoids aimed at averting or slowing the progression of the AD pathogenesis.
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Affiliation(s)
- Md. Sahab Uddin
- Department of Pharmacy, Southeast University, Dhaka 1213, Bangladesh
- Pharmakon Neuroscience Research Network, Dhaka 1207, Bangladesh
- Correspondence: or (M.S.U.); (P.J.); Tel.: +880-1710220110 (M.S.U.); +33-3-26913-341 (P.J.)
| | | | - Kamal Niaz
- Department of Pharmacology and Toxicology, Faculty of Bio-Sciences, Cholistan University of Veterinary and Animal Sciences (CUVAS), Bahawalpur 63100, Pakistan
| | - Philippe Jeandet
- Research Unit, Induced Resistance and Plant Bioprotection, EA 4707, SFR Condorcet FR CNRS 3417, Faculty of Sciences, University of Reims Champagne-Ardenne, PO Box 1039, 51687 Reims CEDEX 2, France
- Correspondence: or (M.S.U.); (P.J.); Tel.: +880-1710220110 (M.S.U.); +33-3-26913-341 (P.J.)
| | - Christophe Clément
- Research Unit, Induced Resistance and Plant Bioprotection, EA 4707, SFR Condorcet FR CNRS 3417, Faculty of Sciences, University of Reims Champagne-Ardenne, PO Box 1039, 51687 Reims CEDEX 2, France
| | - Bijo Mathew
- Division of Drug Design and Medicinal Chemistry Research Lab, Department of Pharmaceutical Chemistry, Ahalia School of Pharmacy, Palakkad, Kerala 678557, India
| | - Abdur Rauf
- Department of Chemistry, University of Swabi, Anbar 23561, Khyber Pakhtunkhwa, Pakistan
| | | | - Eduardo Sobarzo-Sánchez
- Instituto de Investigación e Innovación en Salud, Facultad de Ciencias de la Salud, Universidad Central de Chile, Santiago 8330507, Chile
- Department of Organic Chemistry, Faculty of Pharmacy, University of Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Ghulam Md Ashraf
- King Fahd Medical Research Center, King Abdulaziz University, Jeddah 21589, Saudi Arabia
- Department of Medical Laboratory Technology, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Lotfi Aleya
- Chrono-Environnement Laboratory, UMR CNRS 6249, Bourgogne Franche-Comté University, F-25030 Besançon, France
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Long JY, Chen JM, Liao YJ, Zhou YJ, Liang BY, Zhou Y. Naringin provides neuroprotection in CCL2-induced cognition impairment by attenuating neuronal apoptosis in the hippocampus. Behav Brain Funct 2020; 16:4. [PMID: 32103758 PMCID: PMC7045422 DOI: 10.1186/s12993-020-00166-6] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Accepted: 02/18/2020] [Indexed: 01/21/2023] Open
Abstract
Background Chemokine C–C motif ligand 2 (CCL2) is one of the most widely recognised proinflammatory chemokines in cognitive disorders. Currently, CCL2-targeting drugs are extremely limited. Thus, this study aimed to explore the neuroprotection afforded by naringin in CCL2-induced cognitive impairment in rats. Methods Before the CCL2 intra-hippocampal injection, rats were treated with naringin for 3 consecutive days via intraperitoneal injection. Two days post-surgery, the Morris water maze (MWM) and novel object recognition (NORT) tests were performed to detect spatial learning and memory and object cognition, respectively. Nissl staining and dUTP nick-end labelling (TUNEL) staining were performed to assess histopathological changes in the hippocampus. Commercial kits were used to measure the activity of superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px) and the content of malondialdehyde (MDA). Quantitative real-time polymerase chain reaction (qRT-PCR) was performed to examine the relative mRNA expression of interleukin 1β, (IL-1β), interleukin 6 (IL-6), glutamate/aspartate transporter (GLAST), glutamate transporter-1 (GLT-1), phosphate-activated glutaminase (PAG), cysteine aspartic acid-specific protease 8 (caspase-8), cysteine aspartic acid-specific protease 3 (caspase-3), cell lymphoma/leukaemia-2 (Bcl-2), and Bcl-2 associated X protein (Bax). Results In the MWM, the average escape latency and average swimming distance were significantly reduced and the crossing times were increased in the naringin-treated groups, compared with the CCL2 group. The NORT results revealed that, compared with the CCL2 rats, the discrimination index in the naringin-treated rats increased significantly. Nissl and TUNEL staining revealed that naringin protected the structure and survival of the neurons in the CA1 zone of the hippocampus. In the naringin-treated groups, the SOD and GSH-Px activities were increased, whereas the MDA levels were decreased. Furthermore, in the naringin-treated groups, the relative mRNA expression of IL-1β and IL-6 was significantly decreased; GLAST and GLT-1 mRNA expression levels were increased, whereas PAG was decreased. In the naringin-treated groups, the relative mRNA expression levels of caspase-8, caspase-3, and Bax were decreased, whereas that of Bcl-2 was increased. Conclusion Collectively, these data indicated that naringin alleviated the CCL2-induced cognitive impairment. The underlying mechanisms could be associated with the inhibition of neuroinflammation, oxidative stress, apoptosis, and the regulation of glutamate metabolism.
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Affiliation(s)
- Jiang-Yi Long
- Department of Pharmacology, Guangxi Medical University, Nanning, 53002, Guangxi, China
| | - Jian-Min Chen
- Department of Pharmacology, Guangxi Medical University, Nanning, 53002, Guangxi, China
| | - Yuan-Jun Liao
- Department of Pharmacology, Guangxi Medical University, Nanning, 53002, Guangxi, China
| | - Yi-Jun Zhou
- Department of Pharmacology, Guangxi Medical University, Nanning, 53002, Guangxi, China
| | - Bing-Yu Liang
- Guangxi Key Laboratory of AIDS Prevention and Treatment, Guangxi Medical University, Nanning, 530021, Guang, China
| | - Yan Zhou
- Department of Pharmacology, Guangxi Medical University, Nanning, 53002, Guangxi, China.
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Kwon JY, Jeon MT, Jung UJ, Kim DW, Moon GJ, Kim SR. Perspective: Therapeutic Potential of Flavonoids as Alternative Medicines in Epilepsy. Adv Nutr 2019; 10:778-790. [PMID: 31111873 PMCID: PMC6743823 DOI: 10.1093/advances/nmz047] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Revised: 03/05/2019] [Accepted: 04/08/2019] [Indexed: 12/18/2022] Open
Abstract
Epilepsy is a chronic neurological disorder that affects many people worldwide. Temporal lobe epilepsy is the most common and most studied type of epilepsy, but the pathological mechanisms underlying this condition are poorly understood. More than 20 antiepileptic drugs (AEDs) have been developed and used for the treatment of epilepsy; however, 30% of patients still experience uncontrolled epilepsy and associated comorbidities, which impair their quality of life. In addition, various side effects have been reported for AEDs, such as drowsiness, unsteadiness, dizziness, blurred or double vision, tremor (shakiness), greater risk of infections, bruising, and bleeding. Thus, critical medical needs remain unmet for patients with uncontrolled epilepsy. Flavonoids belong to a subclass of polyphenols that are widely present in fruits, vegetables, and certain beverages. Recently, many studies have reported that some flavonoids elicit various beneficial effects in patients with epilepsy without causing the side effects associated with conventional medical therapies. Moreover, flavonoids may have a property of regulating microRNA expression associated with inflammation and cell survival. These findings suggest that flavonoids, which are more effective but impose fewer adverse effects than conventional AEDs, could be used in the treatment of epilepsy.
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Affiliation(s)
- Jae Young Kwon
- School of Life Sciences, BK21 plus KNU Creative BioResearch Group, Kyungpook National University, Daegu, Republic of Korea
| | - Min-Tae Jeon
- School of Life Sciences, BK21 plus KNU Creative BioResearch Group, Kyungpook National University, Daegu, Republic of Korea
| | - Un Ju Jung
- Department of Food Science and Nutrition, Pukyong National University, Busan, Republic of Korea
| | - Dong Woon Kim
- Department of Medical Science,Department of Anatomy, Brain Research Institute, Chungnam National University School of Medicine, Daejeon, Republic of Korea
| | - Gyeong Joon Moon
- School of Life Sciences, BK21 plus KNU Creative BioResearch Group, Kyungpook National University, Daegu, Republic of Korea,Address correspondence to GJM (e-mail: )
| | - Sang Ryong Kim
- School of Life Sciences, BK21 plus KNU Creative BioResearch Group, Kyungpook National University, Daegu, Republic of Korea,Brain Science and Engineering Institute, Kyungpook National University, Daegu, Republic of Korea,Address correspondence to SRK (e-mail: )
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Ruan Y, Guo SJ, Wang X, Dong D, Shen DH, Zhu J, Zheng XY. Kainic Acid Impairs the Memory Behavior of APP23 Mice by Increasing Brain Amyloid Load through a Tumor Necrosis Factor-α-Dependent Mechanism. J Alzheimers Dis 2019; 64:103-116. [PMID: 29782313 DOI: 10.3233/jad-171137] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Kainic acid (KA) was recently identified as an epileptogenic and neuroexcitotoxic agent that is responsible for inducing learning and memory deficits in various neurodegenerative diseases, such as Alzheimer's disease (AD). However, the mechanism by which KA acts upon AD remains unclear. To this end, we presently investigated the roles of KA in processing amyloid-β protein precursor (AβPP) and amyloid-β protein (Aβ) loads during the course of AD development and progression. Specifically, KA treatment clearly caused the upregulation of tumor necrosis factor α (TNF-α) via activation of the PI3-K/AKT, ERK1/2, and p65 pathways in glial cells. TNF-α secreted from glial cells was then found to be responsible for stimulating the expression of BACE-1 and PS1/2, which resulted in the production and deposition of Aβ in neurons. Finally, the accumulation and aggregation of Aβ lead to the cognitive decline of APP23 mice. These results indicate that KA accelerates the progression of AD by inducing the crosstalk between glial cells and neurons.
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Affiliation(s)
- Yang Ruan
- Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, Changchun, China
| | - Shi-Jie Guo
- Department of Neonatology, The First Hospital of Jilin University, Changchun, China
| | - Xu Wang
- Department of Neurology and Neuroscience Center, The First Hospital of Jilin University, Changchun, China
| | - Dong Dong
- Department of Radiology, The First Hospital of Jilin University, Changchun, China
| | - Dong-Hui Shen
- Department of Neurology and Neuroscience Center, The First Hospital of Jilin University, Changchun, China
| | - Jie Zhu
- Department of Neurology and Neuroscience Center, The First Hospital of Jilin University, Changchun, China.,Department of Neurobiology, Care Sciences and Society, Karolinska Institute, Stockholm, Sweden
| | - Xiang-Yu Zheng
- Department of Neurology and Neuroscience Center, The First Hospital of Jilin University, Changchun, China
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Jia KK, Pan SM, Ding H, Liu JH, Zheng YJ, Wang SJ, Pan Y, Kong LD. Chaihu-shugan san inhibits inflammatory response to improve insulin signaling in liver and prefrontal cortex of CUMS rats with glucose intolerance. Biomed Pharmacother 2018; 103:1415-1428. [DOI: 10.1016/j.biopha.2018.04.171] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2017] [Revised: 04/20/2018] [Accepted: 04/23/2018] [Indexed: 02/08/2023] Open
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Lee JM, Hong J, Moon GJ, Jung UJ, Won SY, Kim SR. Morin Prevents Granule Cell Dispersion and Neurotoxicity via Suppression of mTORC1 in a Kainic Acid-induced Seizure Model. Exp Neurobiol 2018; 27:226-237. [PMID: 30022874 PMCID: PMC6050420 DOI: 10.5607/en.2018.27.3.226] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Revised: 05/24/2018] [Accepted: 05/25/2018] [Indexed: 12/21/2022] Open
Abstract
An abnormal reorganization of the dentate gyrus and neurotoxic events are important phenotypes in the hippocampus of patients with temporal lobe epilepsy (TLE). The effects of morin, a bioflavonoid constituent of many herbs and fruits, on epileptic seizures have not yet been elucidated, though its beneficial effects, such as its anti-inflammatory and neuroprotective properties, are well-described in various neurodegenerative diseases. In the present study, we investigated whether treatment with morin hydrate (MH) can reduce the susceptibility to seizures, granule cell dispersion (GCD), mammalian target of rapamycin complex 1 (mTORC1) activity, and the increases in the levels of apoptotic molecules and inflammatory cytokines in the kainic acid (KA)-induced seizure mouse model. Our results showed that oral administration of MH could reduce susceptibility to seizures and lead to the inhibition of GCD and mTORC1 activity in the KA-treated hippocampus. Moreover, treatment with MH significantly reduced the increased levels of apoptotic signaling molecules and pro-inflammatory mediators in the KA-treated hippocampus compared with control mice, suggesting a neuroprotective role. Therefore, these results suggest that morin has a therapeutic potential against epilepsy through its abilities to inhibit GCD and neurotoxic events in the in vivo hippocampus.
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Affiliation(s)
- Ji Min Lee
- School of Life Sciences, BK21 plus KNU Creative BioResearch Group, Kyungpook National University, Daegu 41566, Korea
| | - Jungwan Hong
- Brain Science and Engineering Institute, Kyungpook National University, Daegu 41944, Korea
| | - Gyeong Joon Moon
- School of Life Sciences, BK21 plus KNU Creative BioResearch Group, Kyungpook National University, Daegu 41566, Korea
| | - Un Ju Jung
- Department of Food Science and Nutrition, Pukyong National University, Busan 48513, Korea
| | - So-Yoon Won
- Department of Biochemistry and Medical Research Center, Chungbuk National University, Cheongju 28644, Korea
| | - Sang Ryong Kim
- School of Life Sciences, BK21 plus KNU Creative BioResearch Group, Kyungpook National University, Daegu 41566, Korea.,Brain Science and Engineering Institute, Kyungpook National University, Daegu 41944, Korea
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Flavonoids as Therapeutic Agents in Alzheimer's and Parkinson's Diseases: A Systematic Review of Preclinical Evidences. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2018; 2018:7043213. [PMID: 29861833 PMCID: PMC5971291 DOI: 10.1155/2018/7043213] [Citation(s) in RCA: 106] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/12/2018] [Accepted: 04/02/2018] [Indexed: 01/06/2023]
Abstract
Alzheimer's and Parkinson's diseases are considered the most common neurodegenerative disorders, representing a major focus of neuroscience research to understanding the cellular alterations and pathophysiological mechanisms involved. Several natural products, including flavonoids, are considered able to cross the blood-brain barrier and are known for their central nervous system-related activity. Therefore, studies are being conducted with these chemical constituents to analyze their activities in slowing down the progression of neurodegenerative diseases. The present systematic review summarizes the pharmacological effects of flavonoids in animal models for Alzheimer's and Parkinson's diseases. A PRISMA model for systematic review was utilized for this search. The research was conducted in the following databases: PubMed, Web of Science, BIREME, and Science Direct. Based on the inclusion criteria, 31 articles were selected and discussed in this review. The studies listed revealed that the main targets of action for Alzheimer's disease therapy were reduction of reactive oxygen species and amyloid beta-protein production, while for Parkinson's disease reduction of the cellular oxidative potential and the activation of mechanisms of neuronal death. Results showed that a variety of flavonoids is being studied and can be promising for the development of new drugs to treat neurodegenerative diseases. Moreover, it was possible to verify that there is a lack of translational research and clinical evidence of these promising compounds.
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Naringenin ameliorates kainic acid-induced morphological alterations in the dentate gyrus in a mouse model of temporal lobe epilepsy. Neuroreport 2018; 27:1182-9. [PMID: 27584687 DOI: 10.1097/wnr.0000000000000678] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Granule cell dispersion (GCD) in the dentate gyrus (DG) of the hippocampus is a morphological alteration characteristic of temporal lobe epilepsy. Recently, we reported that treatment with naringin, a flavonoid found in grapefruit and citrus fruits, reduced spontaneous recurrent seizures by inhibiting kainic acid (KA)-induced GCD and neuronal cell death in mouse hippocampus, suggesting that naringin might have beneficial effects for preventing epileptic events in the adult brain. However, it is still unclear whether the beneficial effects of naringin treatment are mediated by the metabolism of naringin into naringenin in the KA-treated hippocampus. To investigate this possibility, we evaluated whether intraperitoneal injections of naringenin could mimic naringin-induced effects against GCD caused by intrahippocampal KA injections in mice. Our results showed that treatment with naringenin delayed the onset of KA-induced seizures and attenuated KA-induced GCD by inhibiting activation of the mammalian target of rapamycin complex 1 in both neurons and reactive astrocytes in the DG. In addition, its administration attenuated the production of proinflammatory cytokines such as tumor necrosis tumor necrosis factor-α (TNFα) and interleukin-1β (IL-1β) from microglial activation in the DG following KA treatment. These results suggest that naringenin may be an active metabolite of naringin and help prevent the progression of epileptic insults in the hippocampus in vivo; therefore, naringenin may be a beneficial metabolite of naringin for the treatment of epilepsy.
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Kim S, Jung UJ, Oh YS, Jeon MT, Kim HJ, Shin WH, Hong J, Kim SR. Beneficial Effects of Silibinin Against Kainic Acid-induced Neurotoxicity in the Hippocampus in vivo. Exp Neurobiol 2017; 26:266-277. [PMID: 29093635 PMCID: PMC5661059 DOI: 10.5607/en.2017.26.5.266] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2017] [Revised: 09/21/2017] [Accepted: 10/05/2017] [Indexed: 02/04/2023] Open
Abstract
Silibinin, an active constituent of silymarin extracted from milk thistle, has been previously reported to confer protection to the adult brain against neurodegeneration. However, its effects against epileptic seizures have not been examined yet. In order to investigate the effects of silibinin against epileptic seizures, we used a relevant mouse model in which seizures are manifested as status epilepticus, induced by kainic acid (KA) treatment. Silibinin was injected intraperitoneally, starting 1 day before an intrahippocampal KA injection and continued daily until analysis of each experiment. Our results indicated that silibinin-treatment could reduce seizure susceptibility and frequency of spontaneous recurrent seizures (SRS) induced by KA administration, and attenuate granule cell dispersion (GCD), a morphological alteration characteristic of the dentate gyrus (DG) in temporal lobe epilepsy (TLE). Moreover, its treatment significantly reduced the aberrant levels of apoptotic, autophagic and pro-inflammatory molecules induced by KA administration, resulting in neuroprotection in the hippocampus. Thus, these results suggest that silibinin may be a beneficial natural compound for preventing epileptic events.
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Affiliation(s)
- Sehwan Kim
- School of Life Sciences, BK21 plus KNU Creative BioResearch Group, Kyungpook National University, Daegu 41566, Korea
| | - Un Ju Jung
- Department of Food Science and Nutrition, Pukyong National University, Busan 48513, Korea
| | - Yong-Seok Oh
- Department of Brain-Cognitive Science, Daegu-Gyeongbuk Institute of Science and Technology, Daegu 42988, Korea
| | - Min-Tae Jeon
- School of Life Sciences, BK21 plus KNU Creative BioResearch Group, Kyungpook National University, Daegu 41566, Korea
| | - Hyung-Jun Kim
- Department of Neural Development and Disease, Department of Structure & Function of Neural Network, Korea Brain Research Institute, Daegu 41062, Korea
| | - Won-Ho Shin
- Predictive Model Research Center, Korea Institute of Toxicology, Daejeon 34114, Korea
| | - Jungwan Hong
- Brain Science and Engineering Institute, Kyungpook National University, Daegu 41944, Korea
| | - Sang Ryong Kim
- School of Life Sciences, BK21 plus KNU Creative BioResearch Group, Kyungpook National University, Daegu 41566, Korea.,Brain Science and Engineering Institute, Kyungpook National University, Daegu 41944, Korea
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Viswanatha GL, Shylaja H, Moolemath Y. The beneficial role of Naringin- a citrus bioflavonoid, against oxidative stress-induced neurobehavioral disorders and cognitive dysfunction in rodents: A systematic review and meta-analysis. Biomed Pharmacother 2017; 94:909-929. [PMID: 28810519 DOI: 10.1016/j.biopha.2017.07.072] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2017] [Revised: 07/04/2017] [Accepted: 07/17/2017] [Indexed: 12/30/2022] Open
Abstract
OBJECTIVES Naringin is a bioflavonoid, very abundantly found in citrus species. In literature, naringin has been scientifically well documented for its beneficial effects in various neurological disorders. In this systematic review and meta-analysis, we have made an attempt to correlate the protective role of naringin against oxidative stress-induced neurological disorders in rodents. METHODS The systematic search was performed using electronic databases; the search was mainly focused on the role of naringin in oxidative stress-induced neuropathological conditions in rodents. While, the meta-analysis was performed on the effect of naringin on oxidative stress markers [superoxide dismutase (SOD), catalase (CAT), glutathione-S-transferase (GST), reduced glutathione (GSH), lipid peroxidation (LPO)], nitrite, mitochondrial complexes (I to IV) and enzymes (acetylcholinesterase, Na+-K+-ATPase, Ca2+-ATPase, and Mg2+-ATPase) in the rodent brain. The data was analyzed using Review Manager Software. THE RESULTS Based on the inclusion and exclusion criteria, twenty studies were selected. The meta-analysis revealed that, naringin could significantly inhibit various physical and chemical stimuli- induced neurological perturbances in the rodent brain, mediated through oxidative stress. Further, naringin also significantly restored the levels of all the oxidative stress markers (oxidative, nitrosative, enzymes, and mitochondrial complexes) in different parts of the rodent brain. SUMMARY This systematic review and meta-analysis supports the available scientific evidence on the beneficial role of naringin in the management of various neurological ailments. However, further studies involving human subjects is recommended to establish the safety and therapeutic efficacy in humans.
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Affiliation(s)
| | - H Shylaja
- Independent Researcher, Kengeri, Bangalore, 560060, Karnataka, India
| | - Yogananda Moolemath
- Vittarthaa Life Sciences, Bommasandra Industrial Area, Bangalore, 560099, Karnataka, India
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Mohd Sairazi NS, K.N.S. S, Asari MA, Mummedy S, Muzaimi M, Sulaiman SA. Effect of tualang honey against KA-induced oxidative stress and neurodegeneration in the cortex of rats. BMC COMPLEMENTARY AND ALTERNATIVE MEDICINE 2017; 17:31. [PMID: 28068984 PMCID: PMC5223557 DOI: 10.1186/s12906-016-1534-x] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/13/2016] [Accepted: 12/19/2016] [Indexed: 11/24/2022]
Abstract
BACKGROUND Administration of KA on rodents has resulted in seizures, behavioral changes, oxidative stress, and neuronal degeneration on selective population of neurons in the brain. The present study was undertaken to investigate the extent of neuroprotective effect conferred by Malaysian Tualang Honey (TH), an antioxidant agent, in the cerebral cortex of rats against KA-induced oxidative stress and neurodegeneration in an animal model of KA-induced excitotoxicity. METHODS Male Sprague-Dawley rats were randomly divided into five groups: Control, KA-treated group, TH + KA-treated group, aspirin (ASP; anti-inflammatory agent) + KA-treated group and topiramate (TPM; antiepileptic agent) + KA-treated group. The animals were pretreated orally with drinking water, TH (1.0g/kg BW), ASP (7.5mg/kg BW) or TPM (40mg/kg BW), respectively, five times at 12 h intervals. KA (15mg/kg BW) was injected subcutaneously 30 min after last treatment to all groups except the control group (normal saline). Behavioral change was observed using an open field test (OFT) to assess the locomotor activity of the animals. Animals were sacrificed after 2 h, 24 h and 48 h of KA administration. RESULTS KA significantly inflicted more neuronal degeneration in the piriform cortex and heightened the predilection to seizures as compared with the control animals. Pretreatment with TH reduced the KA-induced neuronal degeneration in the piriform cortex but failed to prevent the occurrence of KA-induced seizures. In the OFT, KA-induced animals showed an increased in locomotor activity and hyperactivity and these were attenuated by TH pretreatment. Furthermore, TH pretreatment significantly attenuated an increase of thiobarbituric acid reactive substances level and a decrease of total antioxidant status level enhanced by KA in the cerebral cortex. CONCLUSION These results suggest that pretreatment with TH has a therapeutic potential against KA-induced oxidative stress and neurodegeneration through its antioxidant effect.
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Affiliation(s)
- Nur Shafika Mohd Sairazi
- Department of Chemical Pathology, School of Medical Sciences, Universiti Sains Malaysia, Health Campus, 16150 Kubang Kerian, Kota Bharu, Kelantan Malaysia
| | - Sirajudeen K.N.S.
- Department of Chemical Pathology, School of Medical Sciences, Universiti Sains Malaysia, Health Campus, 16150 Kubang Kerian, Kota Bharu, Kelantan Malaysia
| | - Mohd Asnizam Asari
- Department of Anatomy, School of Medical Sciences, Universiti Sains Malaysia, Health Campus, 16150 Kubang Kerian, Kota Bharu, Kelantan Malaysia
| | - Swamy Mummedy
- Department of Chemical Pathology, School of Medical Sciences, Universiti Sains Malaysia, Health Campus, 16150 Kubang Kerian, Kota Bharu, Kelantan Malaysia
| | - Mustapha Muzaimi
- Department of Neurosciences, School of Medical Sciences, Universiti Sains Malaysia, Health Campus, 16150 Kubang Kerian, Kota Bharu, Kelantan Malaysia
| | - Siti Amrah Sulaiman
- Department of Pharmacology, School of Medical Sciences, Universiti Sains Malaysia, Health Campus, 16150 Kubang Kerian, Kota Bharu, Kelantan Malaysia
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Abstract
CONTEXT Naringin is a natural flavanone glycoside that is found in the Chinese herbal medicines and citrus fruits. Studies have demonstrated that naringin possesses numerous biological and pharmacological properties, but few reviews of these studies have been performed. OBJECTIVE The present review gathers the fragmented information available in the literature describing the extraction of naringin, its pharmacology and its controlled release formulations. Current research progress and the therapeutic potential of naringin are also discussed. METHODS A literature survey for relevant information regarding the biological and pharmacological properties of naringin was conducted using Pubmed, Sciencedirect, MEDLINE, Springerlink and Google Scholar electronic databases from the year 2007-2015. RESULTS Naringin modulates signalling pathways and interacts with signalling molecules and thus has a wide range of pharmacological activities, including anti-inflammatory, anti-cancer activities, as well as effects on bone regeneration, metabolic syndrome, oxidative stress, genetic damage and central nervous system (CNS) diseases. Information was gathered that showed the extraction of naringin can be improved using several modifications. There has been some progress in the development of controlled release formulations of naringin. CONCLUSION Naringin is a promising candidate for further in vivo studies and clinical use. More detailed studies regarding its mechanism of action are required.
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Affiliation(s)
- Rui Chen
- a Medical Faculty , Kunming University of Science and Technology , Kunming , Yunnan Province , China
- b The First People's Hospital of Yunnan Province , Kunming , Yunnan Province , China
- c Affiliated Hospital of Kunming University of Science and Technology , Kunming , Yunnan Province , China
| | - Qiao-Ling Qi
- d Yunnan Provincial Key Laboratory of Entomological Biopharmaceutical R&D , Dali University , Dali , Yunnan Province , China
| | - Meng-Ting Wang
- a Medical Faculty , Kunming University of Science and Technology , Kunming , Yunnan Province , China
- b The First People's Hospital of Yunnan Province , Kunming , Yunnan Province , China
- c Affiliated Hospital of Kunming University of Science and Technology , Kunming , Yunnan Province , China
| | - Qi-Yan Li
- a Medical Faculty , Kunming University of Science and Technology , Kunming , Yunnan Province , China
- b The First People's Hospital of Yunnan Province , Kunming , Yunnan Province , China
- c Affiliated Hospital of Kunming University of Science and Technology , Kunming , Yunnan Province , China
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Kim SR. Control of Granule Cell Dispersion by Natural Materials Such as Eugenol and Naringin: A Potential Therapeutic Strategy Against Temporal Lobe Epilepsy. J Med Food 2016; 19:730-6. [PMID: 27404051 DOI: 10.1089/jmf.2016.3712] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
The hippocampus is an important brain area where abnormal morphological characteristics are often observed in patients with temporal lobe epilepsy (TLE), typically showing the loss of the principal neurons in the CA1 and CA3 areas of the hippocampus. TLE is frequently associated with widening of the granule cell layer of the dentate gyrus (DG), termed granule cell dispersion (GCD), in the hippocampus, suggesting that the control of GCD with protection of hippocampal neurons may be useful for preventing and inhibiting epileptic seizures. We previously reported that eugenol (EUG), which is an essential component of medicinal herbs and has anticonvulsant activity, is beneficial for treating epilepsy through its ability to inhibit GCD via suppression of mammalian target of rapamycin complex 1 (mTORC1) activation in the hippocampal DG in a kainic acid (KA)-treated mouse model of epilepsy in vivo. In addition, we reported that naringin, a bioflavonoid in citrus fruits, could exert beneficial effects, such as antiautophagic stress and antineuroinflammation, in the KA mouse model of epilepsy, even though it was unclear whether naringin might also attenuate the seizure-induced morphological changes of GCD in the DG. Similar to the effects of EUG, we recently observed that naringin treatment significantly reduced KA-induced GCD and mTORC1 activation, which are both involved in epileptic seizures, in the hippocampus of mouse brain. Therefore, these observations suggest that the utilization of natural materials, which have beneficial properties such as inhibition of GCD formation and protection of hippocampal neurons, may be useful in developing a novel therapeutic agent against TLE.
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Affiliation(s)
- Sang Ryong Kim
- 1 School of Life Sciences, Kyungpook National University , Daegu, Korea.,2 BK21 plus KNU Creative BioResearch Group, Kyungpook National University , Daegu, Korea.,3 Brain Science and Engineering Institute, Kyungpook National University , Daegu, Korea
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Naringin attenuates granule cell dispersion in the dentate gyrus in a mouse model of temporal lobe epilepsy. Epilepsy Res 2016; 123:6-10. [DOI: 10.1016/j.eplepsyres.2016.03.001] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2015] [Revised: 02/18/2016] [Accepted: 03/10/2016] [Indexed: 01/01/2023]
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Bioactive Flavonoids, Antioxidant Behaviour, and Cytoprotective Effects of Dried Grapefruit Peels (Citrus paradisi Macf.). OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2016; 2016:8915729. [PMID: 26904169 PMCID: PMC4745316 DOI: 10.1155/2016/8915729] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/11/2015] [Revised: 11/30/2015] [Accepted: 12/01/2015] [Indexed: 01/30/2023]
Abstract
Grapefruit (Citrus paradisi Macf.) is an important cultivar of the Citrus genus which contains a number of nutrients beneficial to human health. The objective of the present study was to evaluate changes in bioactive flavonoids, antioxidant behaviour, and in vitro cytoprotective effect of processed white and pink peels after oven-drying (45°C–60°C) and freeze-drying treatments. Comparison with fresh grapefruit peels was also assessed. Significant increases in DPPH, FRAPS, and ABTS values were observed in dried grapefruit peel samples in comparison with fresh peels, indicating the suitability of the treatments for use as tools to greatly enhance the antioxidant potential of these natural byproducts. A total of thirteen flavonoids were quantified in grapefruit peel extracts by HPLC-MS/MS. It was found that naringin, followed by isonaringin, was the main flavonoid occurring in fresh, oven-dried, and freeze-dried grapefruit peels. In vivo assay revealed that fresh and oven-dried grapefruit peel extracts (45°C) exerted a strong cytoprotective effect on SH-SY5Y neuroblastoma cell lines at concentrations ranging within 0.1–0.25 mg/mL. Our data suggest that grapefruit (Citrus paradisi Macf.) peel has considerable potential as a source of natural bioactive flavonoids with outstanding antioxidant activity which can be used as agents in several therapeutic strategies.
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