scholarly journals Kainic Acid-Induced Excitotoxicity Experimental Model: Protective Merits of Natural Products and Plant Extracts

2015 ◽  
Vol 2015 ◽  
pp. 1-15 ◽  
Author(s):  
Nur Shafika Mohd Sairazi ◽  
K. N. S. Sirajudeen ◽  
Mohd Asnizam Asari ◽  
Mustapha Muzaimi ◽  
Swamy Mummedy ◽  
...  
Keyword(s):  
Natural Products ◽  
Neurodegenerative Diseases ◽  
Kainic Acid ◽  
Plant Extracts ◽  
Neuroprotective Effect ◽  
Pathological Process ◽  
Behavioral Changes ◽  
Beneficial Effects ◽  
Inflammatory Mediator Production ◽  
The Central Nervous System

Excitotoxicity is well recognized as a major pathological process of neuronal death in neurodegenerative diseases involving the central nervous system (CNS). In the animal models of neurodegeneration, excitotoxicity is commonly induced experimentally by chemical convulsants, particularly kainic acid (KA). KA-induced excitotoxicity in rodent models has been shown to result in seizures, behavioral changes, oxidative stress, glial activation, inflammatory mediator production, endoplasmic reticulum stress, mitochondrial dysfunction, and selective neurodegeneration in the brain upon KA administration. Recently, there is an emerging trend to search for natural sources to combat against excitotoxicity-associated neurodegenerative diseases. Natural products and plant extracts had attracted a considerable amount of attention because of their reported beneficial effects on the CNS, particularly their neuroprotective effect against excitotoxicity. They provide significant reduction and/or protection against the development and progression of acute and chronic neurodegeneration. This indicates that natural products and plants extracts may be useful in protecting against excitotoxicity-associated neurodegeneration. Thus, targeting of multiple pathways simultaneously may be the strategy to maximize the neuroprotection effect. This review summarizes the mechanisms involved in KA-induced excitotoxicity and attempts to collate the various researches related to the protective effect of natural products and plant extracts in the KA model of neurodegeneration.

Natural Products for the Treatment of Neurodegenerative Diseases

2020 ◽  
Vol 27 (34) ◽  
pp. 5790-5828 ◽  
Author(s):  
Ze Wang ◽  
Chunyang He ◽  
Jing-Shan Shi
Keyword(s):  
Nervous System ◽  
Natural Products ◽  
Neurodegenerative Diseases ◽  
Neuroprotective Effect ◽  
Rapid Development ◽  
New Drugs ◽  
Progressive Degeneration ◽  
Cord Injury ◽  
The Central Nervous System ◽  
And Function

Neurodegenerative diseases are a heterogeneous group of disorders characterized by the progressive degeneration of the structure and function of the central nervous system or peripheral nervous system. Alzheimer's Disease (AD), Parkinson's Disease (PD) and Spinal Cord Injury (SCI) are the common neurodegenerative diseases, which typically occur in people over the age of 60. With the rapid development of an aged society, over 60 million people worldwide are suffering from these uncurable diseases. Therefore, the search for new drugs and therapeutic methods has become an increasingly important research topic. Natural products especially those from the Traditional Chinese Medicines (TCMs), are the most important sources of drugs, and have received extensive interest among pharmacist. In this review, in order to facilitate further chemical modification of those useful natural products by pharmacists, we will bring together recent studies in single natural compound from TCMs with neuroprotective effect.

scholarly journals Exploring the Use of Dimethyl Fumarate as Microglia Modulator for Neurodegenerative Diseases Treatment

Antioxidants ◽  
2020 ◽  
Vol 9 (8) ◽  
pp. 700
Author(s):  
Maria Rosito ◽  
Claudia Testi ◽  
Giacomo Parisi ◽  
Barbara Cortese ◽  
Paola Baiocco ◽  
...  
Keyword(s):  
Neurodegenerative Diseases ◽  
Iron Homeostasis ◽  
Brain Injuries ◽  
Neuroprotective Effect ◽  
Redox Homeostasis ◽  
Dimethyl Fumarate ◽  
Redox Balance ◽  
Fumaric Acid Ester ◽  
The Central Nervous System

The maintenance of redox homeostasis in the brain is critical for the prevention of the development of neurodegenerative diseases. Drugs acting on brain redox balance can be promising for the treatment of neurodegeneration. For more than four decades, dimethyl fumarate (DMF) and other derivatives of fumaric acid ester compounds have been shown to mitigate a number of pathological mechanisms associated with psoriasis and relapsing forms of multiple sclerosis (MS). Recently, DMF has been shown to exert a neuroprotective effect on the central nervous system (CNS), possibly through the modulation of microglia detrimental actions, observed also in multiple brain injuries. In addition to the hypothesis that DMF is linked to the activation of NRF2 and NF-kB transcription factors, the neuroprotective action of DMF may be mediated by the activation of the glutathione (GSH) antioxidant pathway and the regulation of brain iron homeostasis. This review will focus on the role of DMF as an antioxidant modulator in microglia processes and on its mechanisms of action in the modulation of different pathways to attenuate neurodegenerative disease progression.

scholarly journals Adiponectin Role in Neurodegenerative Diseases: Focus on Nutrition Review

2020 ◽  
Vol 21 (23) ◽  
pp. 9255
Author(s):  
Rita Polito ◽  
Irene Di Meo ◽  
Michelangela Barbieri ◽  
Aurora Daniele ◽  
Giuseppe Paolisso ◽  
...  
Keyword(s):  
Gut Microbiota ◽  
Neurodegenerative Diseases ◽  
Immune Cell ◽  
Inflammatory Diseases ◽  
Metabolic Effects ◽  
Beneficial Effects ◽  
The Central Nervous System ◽  
Regulatory Effects ◽  
Nutrition Review ◽  
Selective Process

Adiponectin is an adipokine produced by adipose tissue. It has numerous beneficial effects. In particular, it improves metabolic effects and glucose homeostasis, lipid profile, and is involved in the regulation of cytokine profile and immune cell production, having anti-inflammatory and immune-regulatory effects. Adiponectin’s role is already known in immune diseases and also in neurodegenerative diseases. Neurodegenerative diseases, such as Alzheimer’s disease and Parkinson’s disease, are a set of diseases of the central nervous system, characterized by a chronic and selective process of neuron cell death, which occurs mainly in relation to oxidative stress and neuroinflammation. Lifestyle is able to influence the development of these diseases. In particular, unhealthy nutrition on gut microbiota, influences its composition and predisposition to develop many diseases such as neurodegenerative diseases, given the importance of the “gut-brain” axis. There is a strong interplay between Adiponectin, gut microbiota, and brain-gut axis. For these reasons, a healthy diet composed of healthy nutrients such as probiotics, prebiotics, polyphenols, can prevent many metabolic and inflammatory diseases such as neurodegenerative diseases and obesity. The special Adiponectin role should be taken into account also, in order to be able to use this component as a therapeutic molecule.

scholarly journals Microglia Specific Drug Targeting Using Natural Products for the Regulation of Redox Imbalance in Neurodegeneration

2021 ◽  
Vol 12 ◽  
Author(s):  
Shashank Kumar Maurya ◽  
Neetu Bhattacharya ◽  
Suman Mishra ◽  
Amit Bhattacharya ◽  
Pratibha Banerjee ◽  
...  
Keyword(s):  
Multiple Sclerosis ◽  
Natural Products ◽  
Neurodegenerative Diseases ◽  
Molecular Mechanisms ◽  
Immune Cell ◽  
Neuroprotective Effect ◽  
Inhibitory Effect ◽  
Dual Function ◽  
Redox Imbalance ◽  
The Brain

Microglia, a type of innate immune cell of the brain, regulates neurogenesis, immunological surveillance, redox imbalance, cognitive and behavioral changes under normal and pathological conditions like Alzheimer’s, Parkinson’s, Multiple sclerosis and traumatic brain injury. Microglia produces a wide variety of cytokines to maintain homeostasis. It also participates in synaptic pruning and regulation of neurons overproduction by phagocytosis of neural precursor cells. The phenotypes of microglia are regulated by the local microenvironment of neurons and astrocytes via interaction with both soluble and membrane-bound mediators. In case of neuron degeneration as observed in acute or chronic neurodegenerative diseases, microglia gets released from the inhibitory effect of neurons and astrocytes, showing activated phenotype either of its dual function. Microglia shows neuroprotective effect by secreting growths factors to heal neurons and clears cell debris through phagocytosis in case of a moderate stimulus. But the same microglia starts releasing pro-inflammatory cytokines like TNF-α, IFN-γ, reactive oxygen species (ROS), and nitric oxide (NO), increasing neuroinflammation and redox imbalance in the brain under chronic signals. Therefore, pharmacological targeting of microglia would be a promising strategy in the regulation of neuroinflammation, redox imbalance and oxidative stress in neurodegenerative diseases. Some studies present potentials of natural products like curcumin, resveratrol, cannabidiol, ginsenosides, flavonoids and sulforaphane to suppress activation of microglia. These natural products have also been proposed as effective therapeutics to regulate the progression of neurodegenerative diseases. The present review article intends to explain the molecular mechanisms and functions of microglia and molecular dynamics of microglia specific genes and proteins like Iba1 and Tmem119 in neurodegeneration. The possible interventions by curcumin, resveratrol, cannabidiol, ginsenosides, flavonoids and sulforaphane on microglia specific protein Iba1 suggest possibility of natural products mediated regulation of microglia phenotypes and its functions to control redox imbalance and neuroinflammation in management of Alzheimer’s, Parkinson’s and Multiple Sclerosis for microglia-mediated therapeutics.

scholarly journals Natural Products and Their Bioactive Compounds: Neuroprotective Potentials against Neurodegenerative Diseases

2020 ◽  
Vol 2020 ◽  
pp. 1-30 ◽  
Author(s):  
Nur Shafika Mohd Sairazi ◽  
K. N. S. Sirajudeen
Keyword(s):  
Cell Death ◽  
Natural Products ◽  
Neurodegenerative Diseases ◽  
Bioactive Compounds ◽  
Therapeutic Potential ◽  
Neuroprotective Effect ◽  
Neuronal Cell Death ◽  
Neuronal Cell ◽  
Neuronal Structure ◽  
And Function

In recent years, natural products, which originate from plants, animals, and fungi, together with their bioactive compounds have been intensively explored and studied for their therapeutic potentials for various diseases such as cardiovascular, diabetes, hypertension, reproductive, cancer, and neurodegenerative diseases. Neurodegenerative diseases, including Alzheimer’s disease, Huntington’s disease, Parkinson’s disease, and amyotrophic lateral sclerosis are characterized by the progressive dysfunction and loss of neuronal structure and function that resulted in the neuronal cell death. Since the multifactorial pathological mechanisms are associated with neurodegeneration, targeting multiple mechanisms of actions and neuroprotection approach, which involves preventing cell death and restoring the function to damaged neurons, could be promising strategies for the prevention and therapeutic of neurodegenerative diseases. Natural products have emerged as potential neuroprotective agents for the treatment of neurodegenerative diseases. This review focused on the therapeutic potential of natural products and their bioactive compounds to exert a neuroprotective effect on the pathologies of neurodegenerative diseases.

scholarly journals Neuroprotective Effect for Cerebral Ischemia by Natural Products: A Review

2021 ◽  
Vol 12 ◽  
Author(s):  
Qian Xie ◽  
Hongyan Li ◽  
Danni Lu ◽  
Jianmei Yuan ◽  
Rong Ma ◽  
...  
Keyword(s):  
Natural Products ◽  
Biological Activities ◽  
Neuroprotective Effect ◽  
Wide Band ◽  
Vast Number ◽  
Beneficial Effects ◽  
Cerebral Ischemic ◽  
Relationship Of

Natural products have a significant role in the prevention of disease and boosting of health in humans and animals. Stroke is a disease with high prevalence and incidence, the pathogenesis is a complex cascade reaction. In recent years, it’s reported that a vast number of natural products have demonstrated beneficial effects on stroke worldwide. Natural products have been discovered to modulate activities with multiple targets and signaling pathways to exert neuroprotection via direct or indirect effects on enzymes, such as kinases, regulatory receptors, and proteins. This review provides a comprehensive summary of the established pharmacological effects and multiple target mechanisms of natural products for cerebral ischemic injury in vitro and in vivo preclinical models, and their potential neuro-therapeutic applications. In addition, the biological activity of natural products is closely related to their structure, and the structure-activity relationship of most natural products in neuroprotection is lacking, which should be further explored in future. Overall, we stress on natural products for their role in neuroprotection, and this wide band of pharmacological or biological activities has made them suitable candidates for the treatment of stroke.

scholarly journals T Cell-Mediated Autoimmunity in Glaucoma Neurodegeneration

2021 ◽  
Vol 12 ◽  
Author(s):  
Lixiang Wang ◽  
Xin Wei
Keyword(s):  
T Cell ◽  
Neurodegenerative Diseases ◽  
Immune Modulation ◽  
Vision Loss ◽  
Pathological Process ◽  
Cell Mediated Immunity ◽  
Immune Mediated ◽  
Potential Applications ◽  
The Central Nervous System

Glaucoma as the leading neurodegenerative disease leads to blindness in 3.6 million people aged 50 years and older worldwide. For many decades, glaucoma therapy has primarily focused on controlling intraocular pressure (IOP) and sound evidence supports its role in delaying the progress of retinal ganglial cell (RGC) damage and protecting patients from vision loss. Meanwhile, accumulating data point to the immune-mediated attack of the neural retina as the underlying pathological process behind glaucoma that may come independent of raised IOP. Recently, some scholars have suggested autoimmune aspects in glaucoma, with autoreactive T cells mediating the chief pathogenic process. This autoimmune process, as well as the pathological features of glaucoma, largely overlaps with other neurodegenerative diseases in the central nervous system (CNS), including Alzheimer’s disease, Parkinson’s disease, and multiple sclerosis. In addition, immune modulation therapy, which is regarded as a potential solution for glaucoma, has been boosted in trials in some CNS neurodegenerative diseases. Thus, novel insights into the T cell-mediated immunity and treatment in CNS neurodegenerative diseases may serve as valuable inspirations for ophthalmologists. This review focuses on the role of T cell-mediated immunity in the pathogenesis of glaucoma and discusses potential applications of relevant findings of CNS neurodegenerative diseases in future glaucoma research.

scholarly journals A review on the neuroprotective effect of Nelumbo nucifera seed pod

2019 ◽  
Vol 10 (3) ◽  
pp. 2307-2310
Author(s):  
Ruvanthika PN ◽  
Manikandan S
Keyword(s):  
High Fat Diet ◽  
Neuroprotective Effect ◽  
Nelumbo Nucifera ◽  
Therapeutic Effects ◽  
Open Field Behavior ◽  
Beneficial Effects ◽  
The Central Nervous System ◽  
As Stress ◽  
Disorder Prevention

Receptaculum Nelumbinis, the dried seed pod of Nelumbo nucifera, exhibited good efficacy for improving learning and memory abilities. Earlier, studies revealed that Receptaculum Nelumbinis can exert therapeutic effects in diverse disorders like heart failure, neoplasm via anti-oxidative, anti-inflammatory and anti-proliferative activities. In the central nervous system (CNS), Receptaculum Nelumbinis (RN) also has beneficial effects on various disorders, such as Alzheimer's disease (AD), depression, Parkinson's disease (PD), cerebral ischemia, epilepsy, and Huntington's disease (HD). RN also enhances memory and cognition ability of rodents in dissimilar pathological conditions, such as stress exposure, diabetes, aging and high-fat diet (HFD). The effect of noise stress on exploratory, locomotor, and anxiolytic activity in the open-field behavior (OFB) test and the effect of drug RN and active component quercetin, a flavonoid isolated from seedpod in overcoming these changes. Optimistically, getting a vibrant impression concerning the role of RN in the CNS, the present paper summarizes and discusses the pharmacological effects of RN as well as its possible mechanisms in CNS disorder prevention and or therapy.

scholarly journals Review: Neuroprotective effect of herbal plant extracts against Parkinson's disease

2021 ◽  
Vol 17 (2) ◽  
pp. 198-209
Author(s):  
Syifa Fitriyanda Salsabila ◽  
Widhya Aligita ◽  
Yani Mulyani
Keyword(s):  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Natural Products ◽  
Plant Extracts ◽  
Neuroprotective Effect ◽  
Substantia Nigra Pars Compacta ◽  
Scientific Journals ◽  
Neuroprotective Effects ◽  
Neuroprotective Therapy ◽  
Herbal Plant

Background: Parkinson's disease (PD) is a progressive neurodegenerative disorder caused by the loss of dopaminergic neurons and the exist of alpha-synuclein aggregates in the substantia nigra pars compacta (SNpc). Among the various types of neuroprotective therapy, natural products are potential therapeutic agents for PD. Objective: The aim of this study is to describe the neuroprotective effect of herbal plant extracts against Parkinson's Disease (PD). Method: The search strategy was carried out on electronic databases, namely Google Scholar, ScienceDirect, and PubMed. There are 111 scientific journals that have been filtered into 20 scientific journals which are international journals published in the last 5 years (2015-2020). The keywords used include Parkinson's Disease, Neuroprotective Effects, Neuroprotection, Plant Extracts, Natural Products and Parkinson's Disease Model. Results: Several experimental studies have shown the neuroprotective ability of various plant extracts to protect against neurotoxicity, through several neuroprotective pathways including antioxidant activity, anti-inflammatory activity, and antiapoptotic activity. Conclusion: Herbal plant extracts have been shown to have strong neuroprotective effects, making them as potential drug candidates for prevention or treatment of Parkinson's Disease (PD). There are Mucuna pruriens, Centella asiatica, Camellia sinensis, Ginkgo biloba, and Uncaria rhynchophylla. Keywords: Parkinson's Disease (PD), neuroprotective, extract.

scholarly journals Genetic Imaging of Neuroinflammation in Parkinson’s Disease: Recent Advancements

2021 ◽  
Vol 9 ◽  
Author(s):  
Longping Yao ◽  
Jiayu Wu ◽  
Sumeyye Koc ◽  
Guohui Lu
Keyword(s):  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Genetic Factors ◽  
Clinical Symptoms ◽  
Neuroprotective Effect ◽  
Pathological Process ◽  
Motor Symptoms ◽  
Surgical Interventions ◽  
The Central Nervous System ◽  
Non Motor Symptoms

Parkinson’s disease (PD) is one of the most prevalent neurodegenerative aging disorders characterized by motor and non-motor symptoms due to the selective loss of midbrain dopaminergic (DA) neurons. The decreased viability of DA neurons slowly results in the appearance of motor symptoms such as rigidity, bradykinesia, resting tremor, and postural instability. These symptoms largely depend on DA nigrostriatal denervation. Pharmacological and surgical interventions are the main treatment for improving clinical symptoms, but it has not been possible to cure PD. Furthermore, the cause of neurodegeneration remains unclear. One of the possible neurodegeneration mechanisms is a chronic inflammation of the central nervous system, which is mediated by microglial cells. Impaired or dead DA neurons can directly lead to microglia activation, producing a large number of reactive oxygen species and pro-inflammatory cytokines. These cytotoxic factors contribute to the apoptosis and death of DA neurons, and the pathological process of neuroinflammation aggravates the primary morbid process and exacerbates ongoing neurodegeneration. Therefore, anti-inflammatory treatment exerts a robust neuroprotective effect in a mouse model of PD. Since discovering the first mutation in the α-synuclein gene (SNCA), which can cause disease-causing, PD has involved many genes and loci such as LRRK2, Parkin, SNCA, and PINK1. In this article, we summarize the critical descriptions of the genetic factors involved in PD’s occurrence and development (such as LRRK2, SNCA, Parkin, PINK1, and inflammasome), and these factors play a crucial role in neuroinflammation. Regulation of these signaling pathways and molecular factors related to these genetic factors can vastly improve the neuroinflammation of PD.

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