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Nezhad Salari AM, Rasoulizadeh Z, Shabgah AG, Vakili-Ghartavol R, Sargazi G, Gholizadeh Navashenaq J. Exploring the mechanisms of kaempferol in neuroprotection: Implications for neurological disorders. Cell Biochem Funct 2024; 42:e3964. [PMID: 38439154 DOI: 10.1002/cbf.3964] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Revised: 02/19/2024] [Accepted: 02/21/2024] [Indexed: 03/06/2024]
Abstract
Kaempferol, a flavonoid compound found in various fruits, vegetables, and medicinal plants, has garnered increasing attention due to its potential neuroprotective effects in neurological diseases. This research examines the existing literature concerning the involvement of kaempferol in neurological diseases, including stroke, Parkinson's disease, Alzheimer's disease, neuroblastoma/glioblastoma, spinal cord injury, neuropathic pain, and epilepsy. Numerous in vitro and in vivo investigations have illustrated that kaempferol possesses antioxidant, anti-inflammatory, and antiapoptotic properties, contributing to its neuroprotective effects. Kaempferol has been shown to modulate key signaling pathways involved in neurodegeneration and neuroinflammation, such as the PI3K/Akt, MAPK/ERK, and NF-κB pathways. Moreover, kaempferol exhibits potential therapeutic benefits by enhancing neuronal survival, attenuating oxidative stress, enhancing mitochondrial calcium channel activity, reducing neuroinflammation, promoting neurogenesis, and improving cognitive function. The evidence suggests that kaempferol holds promise as a natural compound for the prevention and treatment of neurological diseases. Further research is warranted to elucidate the underlying mechanisms of action, optimize dosage regimens, and evaluate the safety and efficacy of this intervention in human clinical trials, thereby contributing to the advancement of scientific knowledge in this field.
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Affiliation(s)
| | - Zahra Rasoulizadeh
- Student Research Committee, Bam University of Medical Sciences, Bam, Iran
| | | | - Roghayyeh Vakili-Ghartavol
- Department of Medical Nanotechnology, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, Iran
- Student Research Committee, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Ghasem Sargazi
- Noncommunicable Diseases Research Center, Bam University of Medical Sciences, Bam, Iran
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Takizawa S, Ohuchi K, Fujimaki A, Ito T, Murakami T, Kurita H, Inden M. Effects of α7 nicotinic acetylcholine receptor agonist against α-synuclein-induced neurotoxicity. Neurosci Lett 2024; 823:137654. [PMID: 38281695 DOI: 10.1016/j.neulet.2024.137654] [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: 11/06/2023] [Revised: 01/22/2024] [Accepted: 01/23/2024] [Indexed: 01/30/2024]
Abstract
The α7 neuronal nicotinic acetylcholine receptor (α7 nAChR) is a potential target for the development of Parkinson's disease (PD) therapeutics. α-Synuclein (α-Syn), a principal component of Lewy bodies (cytoplasmic inclusions), is a major contributor to PD pathophysiology. Previous studies have demonstrated that activating α7 nAChR protects against nigrostriatal dopamine degeneration in acute and chronic PD animal models induced by 6-hydroxydopamine and rotenone, respectively. In the present study, we investigated the effects of PNU282987, a selective α7 nAChR agonist, against α-Syn-induced neurotoxicity in α-SynWT-, α-SynA30P-, and α-SynE46K-N2a cells. PNU282987 exhibited substantial neuroprotection against both wild-type and mutant-type α-Syn-induced toxicity. Furthermore, PNU282987 promoted transcription factor EB activity and reduced intracellular α-Syn protein levels through autophagy induction. These results highlight the therapeutic potential of α7 nAChR activation in diseases characterized by α-Syn aggregation, such as PD.
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Affiliation(s)
- Shinnosuke Takizawa
- Laboratory of Medical Therapeutics and Molecular Therapeutics, Gifu Pharmaceutical University, 1-25-4 Daigaku-Nishi, Gifu, Gifu 501-1196, Japan
| | - Kazuki Ohuchi
- Laboratory of Medical Therapeutics and Molecular Therapeutics, Gifu Pharmaceutical University, 1-25-4 Daigaku-Nishi, Gifu, Gifu 501-1196, Japan
| | - Ayaka Fujimaki
- Laboratory of Medical Therapeutics and Molecular Therapeutics, Gifu Pharmaceutical University, 1-25-4 Daigaku-Nishi, Gifu, Gifu 501-1196, Japan
| | - Taisei Ito
- Laboratory of Medical Therapeutics and Molecular Therapeutics, Gifu Pharmaceutical University, 1-25-4 Daigaku-Nishi, Gifu, Gifu 501-1196, Japan
| | - Takanori Murakami
- Laboratory of Medical Therapeutics and Molecular Therapeutics, Gifu Pharmaceutical University, 1-25-4 Daigaku-Nishi, Gifu, Gifu 501-1196, Japan
| | - Hisaka Kurita
- Laboratory of Medical Therapeutics and Molecular Therapeutics, Gifu Pharmaceutical University, 1-25-4 Daigaku-Nishi, Gifu, Gifu 501-1196, Japan
| | - Masatoshi Inden
- Laboratory of Medical Therapeutics and Molecular Therapeutics, Gifu Pharmaceutical University, 1-25-4 Daigaku-Nishi, Gifu, Gifu 501-1196, Japan.
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de Morais EF, de Oliveira LQR, de Farias Morais HG, de Souto Medeiros MR, Freitas RDA, Rodini CO, Coletta RD. The Anticancer Potential of Kaempferol: A Systematic Review Based on In Vitro Studies. Cancers (Basel) 2024; 16:585. [PMID: 38339336 PMCID: PMC10854650 DOI: 10.3390/cancers16030585] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Revised: 01/25/2024] [Accepted: 01/26/2024] [Indexed: 02/12/2024] Open
Abstract
Given the heterogeneity of different malignant processes, planning cancer treatment is challenging. According to recent studies, natural products are likely to be effective in cancer prevention and treatment. Among bioactive flavonoids found in fruits and vegetables, kaempferol (KMP) is known for its anti-inflammatory, antioxidant, and anticancer properties. This systematic review aims to highlight the potential therapeutic effects of KMP on different types of solid malignant tumors. This review was conducted following the Preferred Reporting Items for Systematic Review and Meta-Analyses (PRISMA) guidelines. Searches were performed in EMBASE, Medline/PubMed, Cochrane Collaboration Library, Science Direct, Scopus, and Google Scholar. After the application of study criteria, 64 studies were included. In vitro experiments demonstrated that KMP exerts antitumor effects by controlling tumor cell cycle progression, proliferation, apoptosis, migration, and invasion, as well as by inhibiting angiogenesis. KMP was also able to inhibit important markers that regulate epithelial-mesenchymal transition and enhanced the sensitivity of cancer cells to traditional drugs used in chemotherapy, including cisplatin and 5-fluorouracil. This flavonoid is a promising therapeutic compound and its combination with current anticancer agents, including targeted drugs, may potentially produce more effective and predictable results.
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Affiliation(s)
- Everton Freitas de Morais
- Graduate Program in Oral Biology, Department of Oral Diagnosis, School of Dentistry, University of Campinas, Piracicaba 13414-018, SP, Brazil; (E.F.d.M.); (L.Q.R.d.O.)
| | - Lilianny Querino Rocha de Oliveira
- Graduate Program in Oral Biology, Department of Oral Diagnosis, School of Dentistry, University of Campinas, Piracicaba 13414-018, SP, Brazil; (E.F.d.M.); (L.Q.R.d.O.)
| | - Hannah Gil de Farias Morais
- Postgraduate Program in Oral Science, Federal University of Rio Grande do Norte, Natal 59000-000, RN, Brazil; (H.G.d.F.M.); (M.R.d.S.M.); (R.d.A.F.)
| | - Maurília Raquel de Souto Medeiros
- Postgraduate Program in Oral Science, Federal University of Rio Grande do Norte, Natal 59000-000, RN, Brazil; (H.G.d.F.M.); (M.R.d.S.M.); (R.d.A.F.)
| | - Roseana de Almeida Freitas
- Postgraduate Program in Oral Science, Federal University of Rio Grande do Norte, Natal 59000-000, RN, Brazil; (H.G.d.F.M.); (M.R.d.S.M.); (R.d.A.F.)
| | - Camila Oliveira Rodini
- Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo, Bauru 17012-901, SP, Brazil;
| | - Ricardo D. Coletta
- Graduate Program in Oral Biology, Department of Oral Diagnosis, School of Dentistry, University of Campinas, Piracicaba 13414-018, SP, Brazil; (E.F.d.M.); (L.Q.R.d.O.)
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Phukan BC, Roy R, Gahatraj I, Bhattacharya P, Borah A. Therapeutic considerations of bioactive compounds in Alzheimer's disease and Parkinson's disease: Dissecting the molecular pathways. Phytother Res 2023; 37:5657-5699. [PMID: 37823581 DOI: 10.1002/ptr.8012] [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: 02/16/2023] [Revised: 08/22/2023] [Accepted: 08/24/2023] [Indexed: 10/13/2023]
Abstract
Leading neurodegenerative diseases Alzheimer's disease (AD) and Parkinson's disease (PD) are characterized by the impairment of memory and motor functions, respectively. Despite several breakthroughs, there exists a lack of disease-modifying treatment strategies for these diseases, as the available drugs provide symptomatic relief and bring along side effects. Bioactive compounds are reported to bear neuroprotective properties with minimal toxicity, however, a detailed elucidation of their modes of neuroprotection is lacking. The review elucidates the neuroprotective mechanism(s) of some of the major phyto-compounds in pre-clinical and clinical studies of AD and PD to understand their potential in combating these diseases. Curcumin, eugenol, resveratrol, baicalein, sesamol and so on have proved efficient in countering the pathological hallmarks of AD and PD. Curcumin, resveratrol, caffeine and so on have reached the clinical phases of these diseases, while aromadendrin, delphinidin, cyanidin and xanthohumol are yet to be extensively explored in pre-clinical phases. The review highlights the need for extensive investigation of these compounds in the clinical stages of these diseases so as to utilize their disease-modifying abilities in the real field of treatment. Moreover, poor pharmacokinetic properties of natural compounds are constraints to their therapeutic yields and this review suggests a plausible contribution of nanotechnology in overcoming these limitations.
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Affiliation(s)
| | - Rubina Roy
- Department of Life Science and Bioinformatics, Assam University, Silchar, Assam, India
| | - Indira Gahatraj
- Department of Life Science and Bioinformatics, Assam University, Silchar, Assam, India
| | - Pallab Bhattacharya
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Gandhinagar, Gujarat, India
| | - Anupom Borah
- Department of Life Science and Bioinformatics, Assam University, Silchar, Assam, India
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Fujimaki A, Ohuchi K, Takizawa S, Murakami T, Kurita H, Hozumi I, Wen X, Kitamura Y, Wu Z, Maekawa Y, Inden M. The neuroprotective effects of FG-4592, a hypoxia-inducible factor-prolyl hydroxylase inhibitor, against oxidative stress induced by alpha-synuclein in N2a cells. Sci Rep 2023; 13:15629. [PMID: 37731009 PMCID: PMC10511692 DOI: 10.1038/s41598-023-42903-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Accepted: 09/15/2023] [Indexed: 09/22/2023] Open
Abstract
Parkinson's disease (PD) is a neurodegenerative disorder characterized by the loss of dopaminergic neurons in the substantia nigra. The pathological hallmark of PD is the appearance of intraneuronal cytoplasmic α-synuclein (α-Syn) aggregation, called Lewy bodies. α-Syn aggregation is deeply involved in the pathogenesis of PD. Oxidative stress is also associated with the progression of PD. In the present study, to investigate whether a hypoxia-inducible factor (HIF)-prolyl hydroxylase (PH) inhibitor, FG-4592 (also called roxadustat), has neuroprotective effects against α-Syn-induced neurotoxicity, we employed a novel α-Syn stably expressing cell line (named α-Syn-N2a cells) utilizing a piggyBac transposon system. In α-Syn-N2a cells, oxidative stress and cell death were induced by α-Syn, and FG-4592 showed significant protection against this neurotoxicity. However, FG-4592 did not affect α-Syn protein levels. FG-4592 triggered heme oxygenase-1 (HO-1) expression downstream of HIF-1α in a concentration-dependent manner. In addition, FG-4592 decreased the production of reactive oxygen species possibly via the activation of HO-1 and subsequently suppressed α-Syn-induced neurotoxicity. Moreover, FG-4592 regulated mitochondrial biogenesis and respiration via the induction of the peroxisome proliferator-activated receptor-γ coactivator-1α. As FG-4592 has various neuroprotective effects against α-Syn and is involved in drug repositioning, it may have novel therapeutic potential for PD.
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Affiliation(s)
- Ayaka Fujimaki
- Laboratory of Medical Therapeutics and Molecular Therapeutics, Gifu Pharmaceutical University, Gifu, 501-1196, Japan
| | - Kazuki Ohuchi
- Laboratory of Medical Therapeutics and Molecular Therapeutics, Gifu Pharmaceutical University, Gifu, 501-1196, Japan
| | - Shinnosuke Takizawa
- Laboratory of Medical Therapeutics and Molecular Therapeutics, Gifu Pharmaceutical University, Gifu, 501-1196, Japan
| | - Takanori Murakami
- Laboratory of Medical Therapeutics and Molecular Therapeutics, Gifu Pharmaceutical University, Gifu, 501-1196, Japan
| | - Hisaka Kurita
- Laboratory of Medical Therapeutics and Molecular Therapeutics, Gifu Pharmaceutical University, Gifu, 501-1196, Japan
| | - Isao Hozumi
- Laboratory of Medical Therapeutics and Molecular Therapeutics, Gifu Pharmaceutical University, Gifu, 501-1196, Japan
| | - Xiaopeng Wen
- Laboratory of Pharmacology and Neurobiology, College of Pharmaceutical Sciences, Ritsumeikan University, Shiga, 525-8577, Japan
| | - Yoshihisa Kitamura
- Laboratory of Pharmacology and Neurobiology, College of Pharmaceutical Sciences, Ritsumeikan University, Shiga, 525-8577, Japan
| | - Zhiliang Wu
- Department of Parasitology and Infectious Diseases, Gifu University Graduate School of Medicine, Gifu, 501-1194, Japan
| | - Yoichi Maekawa
- Department of Parasitology and Infectious Diseases, Gifu University Graduate School of Medicine, Gifu, 501-1194, Japan
- Division of Preemptive Food Research, Preemptive Food Research Center (PFRC), Gifu University Institute for Advanced Science (GUIAS), Gifu, 501-1194, Japan
- Division of Animal Medical Science, Center for One Medicine Innovative Translational Research (COMIT), Gifu University Institute for Advanced Science (GUIAS), Gifu, 501-1194, Japan
| | - Masatoshi Inden
- Laboratory of Medical Therapeutics and Molecular Therapeutics, Gifu Pharmaceutical University, Gifu, 501-1196, Japan.
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Zhang W, Dong X, Huang R. Antiparkinsonian Effects of Polyphenols: A Narrative Review with a Focus on the Modulation of the Gut-brain Axis. Pharmacol Res 2023:106787. [PMID: 37224894 DOI: 10.1016/j.phrs.2023.106787] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/11/2023] [Revised: 04/23/2023] [Accepted: 05/02/2023] [Indexed: 05/26/2023]
Abstract
Polyphenols, which are naturally occurring bioactive compounds in fruits and vegetables, are emerging as potential therapeutics for neurological disorders such as Parkinson's disease (PD). Polyphenols have diverse biological activities, such as anti-oxidative, anti-inflammatory, anti-apoptotic, and α-synuclein aggregation inhibitory effects, which could ameliorate PD pathogenesis. Studies have shown that polyphenols are capable of regulating the gut microbiota (GM) and its metabolites; in turn, polyphenols are extensively metabolized by the GM, resulting in the generation of bioactive secondary metabolites. These metabolites may regulate various physiological processes, including inflammatory responses, energy metabolism, intercellular communication, and host immunity. With increasing recognition of the importance of the microbiota-gut-brain axis (MGBA) in PD etiology, polyphenols have attracted growing attention as MGBA regulators. In order to address the potential therapeutic role of polyphenolic compounds in PD, we focused on MGBA. DATA AVAILABILITY: Data will be made available on request.
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Affiliation(s)
- Wei Zhang
- Department of Neurology, Shengjing Hospital of China Medical University, Shenyang, Liaoning PR, China
| | - Xiaoyu Dong
- Department of Neurology, Shengjing Hospital of China Medical University, Shenyang, Liaoning PR, China
| | - Rui Huang
- Department of Neurology, Shengjing Hospital of China Medical University, Shenyang, Liaoning PR, China.
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Adedara AO, Wildner G, Loreto JS, Dos Santos MM, Abolaji AO, Barbosa NV. Kaempferol counteracts toxicity induced by 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine in D. melanogaster: An implication of its mitoprotective activity. Neurotoxicology 2023; 95:23-34. [PMID: 36592898 DOI: 10.1016/j.neuro.2022.12.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2022] [Revised: 12/14/2022] [Accepted: 12/22/2022] [Indexed: 01/01/2023]
Abstract
The current study aimed to investigate whether kaempferol (KMP), the major bioactive component of green leafy vegetables, could counteract the toxicity elicited by 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) in Drosophila melanogaster or not. First, we performed a dose-response curve, where adult wild-type flies were fed on diet-containing different concentrations of KMP throughout their lifespan. Afterward, flies were fed on a diet containing MPTP (500 μM) and KMP (20 and 40 μM) for 7 days. The MPTP- fed flies presented a higher mortality rate, lower emergence rate, locomotor deficits, and disruption in circadian rhythm when compared to the control. MPTP exposure induced severe oxidative stress, which was marked by reduction in thiol content, overproduction of reactive species, lipid and protein oxidation, and disruption of enzymes of antioxidant and neurotransmission pathways. MPTP also compromised the mitochondrial dynamics and respiration of flies, affecting the electron transport chain, oxidative phosphorylation, and fusion/fission processes. Besides extending per se the lifespan of flies, KMP counteracted the toxic effects of MPTP on the circadian cycle, survival, climbing, and hatching rates. KMP was also effective in restoring the activities of acetylcholinesterase (AChE) and monoamine oxidase (MAO) enzymes, as well as in normalizing the levels of all oxidant/antioxidant markers disrupted in MPTP-fed flies. Indeed, KMP reestablished the mitochondrial functionality in MPTP- fed flies, restoring the electron transport system linked to mitochondrial complex I and II, and rescuing the mRNA transcription of genes associated with mitochondrial fusion and fission, namely OPA-1 (Optic atrophy 1) and DRP-1 (Dynamin related protein 1). Our results showed the efficacy of KMP in hindering the toxicity induced by MPTP in D. melanogaster and suggest that the mitoprotective action of flavonoid may be boosting its anti-parkinsonism activity in the model. Besides, the study showed that wild-type strains of D. melanogaster proved to be reproducible in vivo model to mimic parkinsonian phenotypes through exposure to the neurotoxin MPTP.
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Affiliation(s)
- Adeola Oluwatosin Adedara
- Programa de Pós-graduação em Bioquímica Toxicológica, Universidade Federal de Santa Maria, Avenida Roraima, 1000, 97105-900 Santa Maria, RS, Brazil; Drosophila Laboratory, Drug Metabolism and Toxicology Unit, Department of Biochemistry, Faculty of Basic Medical Science, College of Medicine, University of Ibadan, Ibadan, Oyo State, Nigeria
| | - Guilherme Wildner
- Programa de Pós-graduação em Bioquímica Toxicológica, Universidade Federal de Santa Maria, Avenida Roraima, 1000, 97105-900 Santa Maria, RS, Brazil
| | - Julia Sepel Loreto
- Programa de Pós-graduação em Bioquímica Toxicológica, Universidade Federal de Santa Maria, Avenida Roraima, 1000, 97105-900 Santa Maria, RS, Brazil
| | - Matheus Mulling Dos Santos
- Programa de Pós-graduação em Bioquímica Toxicológica, Universidade Federal de Santa Maria, Avenida Roraima, 1000, 97105-900 Santa Maria, RS, Brazil
| | - Amos Olalekan Abolaji
- Drosophila Laboratory, Drug Metabolism and Toxicology Unit, Department of Biochemistry, Faculty of Basic Medical Science, College of Medicine, University of Ibadan, Ibadan, Oyo State, Nigeria.
| | - Nilda Vargas Barbosa
- Programa de Pós-graduação em Bioquímica Toxicológica, Universidade Federal de Santa Maria, Avenida Roraima, 1000, 97105-900 Santa Maria, RS, Brazil.
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Yang N, Qi X, Hu J, Teng J, Wang Y, Li C. Exploring the mechanism of astragalus membranaceus in the treatment of multiple system atrophy based on network pharmacology and molecular docking. Medicine (Baltimore) 2023; 102:e32523. [PMID: 36749251 PMCID: PMC9901982 DOI: 10.1097/md.0000000000032523] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Multiple system atrophy (MSA) is a fatal neurodegenerative disease, it causes functional degradation of multiple organs and systems throughout the body. Astragalus membranaceus (AM), a well-known traditional Chinese medicine, has been used to improve muscle wasting-related disorders for a long history. In this study, we used network pharmacology and molecular docking to predict the mechanism underlying AM for the treatment of MSA. We screened the active compounds of AM and its related targets, as well as the target proteins of MSA. We made a Venn diagram to obtain the intersecting targets and then constructed a protein-protein interaction network to find the core targets and build an active ingredient-target network map. After subjecting the intersecting targets to gene ontology and Kyoto encyclopedia of genes and genomes analysis, the binding ability of core compounds and core target proteins were validated by molecular docking. A total of 20 eligible compounds and 274 intersecting targets were obtained. The core components of treatment are quercetin, kaempferol, and isorhamnetin, and the core targets are TP53, RELA, and TNF. The main biological processes are related to cellular responses and regulation. Molecular functions are mainly associated with apoptosis, inflammation, and tumorigenesis. Molecular docking results show good and standard binding abilities. This study illustrates that AM treats MSA through multiple targets and pathways, and provides a reference for subsequent research.
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Affiliation(s)
- Ni Yang
- Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Xianghua Qi
- Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Jing Hu
- Shandong Public Health Clinical Center, Jinan, China
| | - Jing Teng
- Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Yuangeng Wang
- Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Chunlin Li
- Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, China
- * Correspondence: Chunlin Li, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, 16369 Jingshi Road, Lixia District, Jinan, Shandong 250014, China (e-mail: )
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Harati M, Tayarani-Najaran Z, Javadi B. Dietary flavonoids: Promising compounds for targeting α-synucleinopathy in Parkinson’s disease. PHARMANUTRITION 2023. [DOI: 10.1016/j.phanu.2023.100334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/04/2023]
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Song D, Xie C, Yang R, Ma A, Zhao H, Zou F, Zhang X, Zhao X. An application of citric acid as a carrier for solid dispersion to improve the dissolution and uric acid-lowering effect of kaempferol. INTERNATIONAL JOURNAL OF FOOD ENGINEERING 2023. [DOI: 10.1515/ijfe-2022-0214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Abstract
Kaempferol (KPF) is a flavonoid compound, which has a variety of pharmacological activities, and widely exists in daily diet. However, its application is limited due to poor solubility. Citric acid (CA) is a common food additive with high solubility. In this study, solid dispersion (SD) was prepared with CA as the carrier to improve the solubility of KPF. KPF-CA-SD (weight ratio 1:20) was obtained by ultrasonic for 20 min at 40 °C. The in vitro dissolution of KPF in SD was increased from about 50% to more than 80%. The physicochemical characterizations were analyzed by X-ray diffraction, differential scanning calorimetry, Fourier transform infrared spectroscopy, and scanning electron microscope. In hyperuricemia mice, KPF-SD (equivalent to 100 mg/kg KPF) can effectively reduce serum uric acid and exert nephroprotective effects. In conclusion, the preparation of SD with CA might provide a safe and effective selection to facilitate application of KPF in food and medicine.
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Affiliation(s)
- Danni Song
- School of Traditional Chinese Material Medica , Shenyang Pharmaceutical University , Shenyang 110016 , China
| | - Changqing Xie
- Faculty of Functional Food and Wine , Shenyang Pharmaceutical University , Shenyang 110016 , China
| | - Rong Yang
- Faculty of Functional Food and Wine , Shenyang Pharmaceutical University , Shenyang 110016 , China
| | - Aijinxiu Ma
- Faculty of Functional Food and Wine , Shenyang Pharmaceutical University , Shenyang 110016 , China
| | - Honghui Zhao
- Faculty of Functional Food and Wine , Shenyang Pharmaceutical University , Shenyang 110016 , China
| | - Fengmao Zou
- School of Traditional Chinese Material Medica , Shenyang Pharmaceutical University , Shenyang 110016 , China
| | - Xiangrong Zhang
- Faculty of Functional Food and Wine , Shenyang Pharmaceutical University , Shenyang 110016 , China
| | - Xu Zhao
- Faculty of Functional Food and Wine , Shenyang Pharmaceutical University , Shenyang 110016 , China
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Wen L, Miao X, Ding J, Tong X, Wu Y, He Y, Zheng F. Pesticides as a risk factor for cognitive impairment: Natural substances are expected to become alternative measures to prevent and improve cognitive impairment. Front Nutr 2023; 10:1113099. [PMID: 36937345 PMCID: PMC10016095 DOI: 10.3389/fnut.2023.1113099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Accepted: 02/01/2023] [Indexed: 03/08/2023] Open
Abstract
Pesticides are the most effective way to control diseases, insects, weeds, and fungi. The central nervous system (CNS) is damaged by pesticide residues in various ways. By consulting relevant databases, the systemic relationships between the possible mechanisms of pesticides damage to the CNS causing cognitive impairment and related learning and memory pathways networks, as well as the structure-activity relationships between some natural substances (such as polyphenols and vitamins) and the improvement were summarized in this article. The mechanisms of cognitive impairment caused by pesticides are closely related. For example, oxidative stress, mitochondrial dysfunction, and neuroinflammation can constitute three feedback loops that interact and restrict each other. The mechanisms of neurotransmitter abnormalities and intestinal dysfunction also play an important role. The connection between pathways is complex. NMDAR, PI3K/Akt, MAPK, Keap1/Nrf2/ARE, and NF-κB pathways can be connected into a pathway network by targets such as Ras, Akt, and IKK. The reasons for the improvement of natural substances are related to their specific structure, such as polyphenols with different hydroxyl groups. This review's purpose is to lay a foundation for exploring and developing more natural substances that can effectively improve the cognitive impairment caused by pesticides.
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Affiliation(s)
- Liankui Wen
- College of Food Science and Engineering, Jilin Agricultural University, Changchun, China
| | - Xiwen Miao
- College of Food Science and Engineering, Jilin Agricultural University, Changchun, China
| | - Jia Ding
- College of Food Science and Engineering, Jilin Agricultural University, Changchun, China
| | - Xuewen Tong
- College of Food Science and Engineering, Jilin Agricultural University, Changchun, China
| | - Yuzhu Wu
- College of Food Science and Engineering, Jilin Agricultural University, Changchun, China
- National Engineering Research Center for Wheat and Corn Deep Processing, Changchun, China
- *Correspondence: Yuzhu Wu, ✉
| | - Yang He
- College of Food Science and Engineering, Jilin Agricultural University, Changchun, China
- Yang He, ✉
| | - Fei Zheng
- Jilin Ginseng Academy, Changchun University of Chinese Medicine, Changchun, China
- Fei Zheng, ✉
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Liu Z, Zhuang W, Cai M, Lv E, Wang Y, Wu Z, Wang H, Fu W. Kaemperfol Protects Dopaminergic Neurons by Promoting mTOR-Mediated Autophagy in Parkinson’s Disease Models. Neurochem Res 2022; 48:1395-1411. [PMID: 36469163 DOI: 10.1007/s11064-022-03819-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Revised: 10/18/2022] [Accepted: 11/09/2022] [Indexed: 12/12/2022]
Abstract
We previously showed that kaempferol (KAE) could exert neuroprotective effects against PD. It has been demonstrated that abnormal autophagy plays a key role in the development of PD. Mitochondrial dysfunction, involved in the development of PD, can damage dopaminergic neurons. Whether the protective effects of KAE were exerted via regulating autophagy remains largely undefined, however. This study aimed to investigate whether KAE could protect dopaminergic neurons via autophagy and the underlying mechanisms using a MPTP/MPP+-stimulated PD model. Cell viability was detected by cell counting kit-8 (CCK-8) assay, and protein levels of autophagy mediators along with mTOR signaling pathway molecules were investigated by immunohistochemistry and Western blot analyses. The results showed that KAE could ameliorate the behavioral impairments of mice, reduce the loss of tyrosine hydroxylase (TH)-positive neurons in the substantia nigra pars compacta, and reduce α-synuclein (α-syn) levels. Furthermore, KAE upregulated levels of autophagy effector protein of Beclin-1 and autophagy microtubule associated protein of light chain 3 (LC3) in the substantia nigra (SN) while rescuing mitochondrial integrity, and downregulated levels of ubiquitin binding protein p62 and cleaved caspase-3, probably by decreasing the mammalian target of rapamycin (mTOR) signaling pathway. Further in vitro experiments demonstrated similar results. In conclusion, KAE exerts neuroprotective effects against PD potentially by promoting autophagy via inhibiting the mTOR signaling pathway.
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Affiliation(s)
- Zhan Liu
- Department of Histology and Embryology, Weifang Medical University, Weifang, 261053, Shandong, China
| | - Wenxin Zhuang
- Center for Experimental Medical Research, Weifang Medical University, Weifang, 261053, Shandong, China
| | - Meiyun Cai
- Department of Histology and Embryology, Weifang Medical University, Weifang, 261053, Shandong, China
| | - E Lv
- Department of Histology and Embryology, Weifang Medical University, Weifang, 261053, Shandong, China
| | - Yanqiang Wang
- Department of Neurology, Affiliated Hospital of Weifang Medical University, Weifang, 261053, Shandong, China
| | - Zhengyan Wu
- Department of Biotechnology, Weifang Medical University, Weifang, 261053, Shandong, China
| | - Hongyu Wang
- Department of Biotechnology, Weifang Medical University, Weifang, 261053, Shandong, China
| | - Wenyu Fu
- Department of Histology and Embryology, Weifang Medical University, Weifang, 261053, Shandong, China.
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