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Lalo U, Pankratov Y. Astrocyte ryanodine receptors facilitate gliotransmission and astroglial modulation of synaptic plasticity. Front Cell Neurosci 2024; 18:1382010. [PMID: 38812795 PMCID: PMC11135129 DOI: 10.3389/fncel.2024.1382010] [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: 02/04/2024] [Accepted: 04/29/2024] [Indexed: 05/31/2024] Open
Abstract
Intracellular Ca2+-signaling in astrocytes is instrumental for their brain "housekeeping" role and astroglial control of synaptic plasticity. An important source for elevating the cytosolic Ca2+ level in astrocytes is a release from endoplasmic reticulum which can be triggered via two fundamental pathways: IP3 receptors and calcium-induced calcium release (CICR) mediated by Ca2+-sensitive ryanodine receptors (RyRs). While the physiological role for glial IP3 became a focus of intensive research and debate, ryanodine receptors received much less attention. We explored the role for ryanodine receptors in the modulation of cytosolic Ca2+-signaling in the cortical and hippocampal astrocytes, astrocyte-neuron communication and astroglia modulation of synaptic plasticity. Our data show that RyR-mediated Ca2+-induced Ca2+-release from ER brings substantial contribution into signaling in the functional microdomains hippocampal and neocortical astrocytes. Furthermore, RyR-mediated CICR activated the release of ATP and glutamate from hippocampal and neocortical astrocytes which, in turn, elicited transient purinergic and tonic glutamatergic currents in the neighboring pyramidal neurons. The CICR-facilitated release of ATP and glutamate was inhibited after intracellular perfusion of astrocytes with ryanodine and BAPTA and in the transgenic dnSNARE mice with impaired astroglial exocytosis. We also found out that RyR-mediated amplification of astrocytic Ca2+-signaling enhanced the long-term synaptic potentiation in the hippocampus and neocortex of aged mice. Combined, our data demonstrate that ryanodine receptors are essential for astrocytic Ca2+-signaling and efficient astrocyte-neuron communications. The RyR-mediated CICR contributes to astrocytic control of synaptic plasticity and can underlie, at least partially, neuroprotective and cognitive effects of caffein.
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Affiliation(s)
| | - Yuriy Pankratov
- School of Life Sciences, University of Warwick, Coventry, United Kingdom
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Alkanad M, Hani U, V AH, Ghazwani M, Haider N, Osmani RAM, M D P, Hamsalakshmi, Bhat R. Bitter yet beneficial: The dual role of dietary alkaloids in managing diabetes and enhancing cognitive function. Biofactors 2024. [PMID: 38169069 DOI: 10.1002/biof.2034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/24/2023] [Accepted: 12/11/2023] [Indexed: 01/05/2024]
Abstract
With the rising prevalence of diabetes and its association with cognitive impairment, interest in the use of dietary alkaloids and other natural products has grown significantly. Understanding how these compounds manage diabetic cognitive dysfunction (DCD) is crucial. This comprehensive review explores the etiology of DCD and the effects of alkaloids in foods and dietary supplements that have been investigated as DCD therapies. Data on how dietary alkaloids like berberine, trigonelline, caffeine, capsaicin, 1-deoxynojirimycin, nuciferine, neferine, aegeline, tetramethylpyrazine, piperine, and others regulate cognition in diabetic disorders were collected from PubMed, Research Gate, Web of Science, Science Direct, and other relevant databases. Dietary alkaloids could improve memory in behavioral models and modulate the mechanisms underlying the cognitive benefits of these compounds, including their effects on glucose metabolism, gut microbiota, vasculopathy, neuroinflammation, and oxidative stress. Evidence suggests that dietary alkaloids hold promise for improving cognition in diabetic patients and could open exciting avenues for future research in diabetes management.
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Affiliation(s)
- Maged Alkanad
- Department of Pharmacognosy, Sri Adichunchanagiri College of Pharmacy, Adichunchanagiri University, Mandya, India
| | - Umme Hani
- Department of Pharmaceutics, College of Pharmacy, King Khalid University, Abha, Saudi Arabia
| | - Annegowda H V
- Department of Pharmacognosy, Sri Adichunchanagiri College of Pharmacy, Adichunchanagiri University, Mandya, India
| | - Mohammed Ghazwani
- Department of Pharmaceutics, College of Pharmacy, King Khalid University, Abha, Saudi Arabia
| | - Nazima Haider
- Department of Pathology, College of Medicine, King Khalid University, Abha, Saudi Arabia
| | - Riyaz Ali M Osmani
- Department of Pharmaceutics, JSS College of Pharmacy, JSS Academy of Higher Education and Research, Mysuru, India
| | - Pandareesh M D
- Center for Research and Innovations, Adichunchanagiri University, BGSIT, Mandya, India
| | - Hamsalakshmi
- Department of Pharmacognosy, Cauvery College of Pharmacy, Cauvery Group of Institutions, Mysuru, India
| | - Rajeev Bhat
- ERA-Chair in Food By-Products Valorisation Technologies (VALORTECH), Estonian University of Life Sciences, Tartu, Estonia
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Zhou J, Qin L. Associations of urinary caffeine and caffeine metabolites with metabolic syndrome in US adults. Front Nutr 2023; 10:1280215. [PMID: 38107745 PMCID: PMC10722267 DOI: 10.3389/fnut.2023.1280215] [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: 08/23/2023] [Accepted: 11/03/2023] [Indexed: 12/19/2023] Open
Abstract
Aims The relationship between caffeine and metabolic syndrome (MetS) has only been evaluated from the perspective of caffeine consumption. The association between urinary caffeine and MetS is still unclear. This study examined the associations between urinary caffeine and its metabolites and MetS and its components among adults. Methods Data from the United States (US) National Health and Nutrition Examination Survey (NHANES) 2011-2014 was analyzed. NHANES is a stratified, multi-stage survey of all non-institutionalized persons in the US. A total of 2,394 subjects aged ≥ 18 years without missing data were selected in this study. Urinary caffeine and caffeine metabolite levels were quantified using high-performance liquid chromatography-electrospray ionization-tandem quadrupole mass spectrometry (HPLC-ESI-MS/MS) with stable isotope-labeled internal standards. We performed principal components analysis (PCA) to investigate the underlying correlation structure of 15 features of urinary caffeine and its metabolites and then used these principal components (PCs) as independent variables to conduct logistic regression analysis with or without restricted cubic spline (RCS) terms to explore the associations between caffeine metabolites and MetS. Results Two main PCs that were derived from the PCA explained 90.67% of the total variance of caffeine and its metabolites. The first PC (PC1, strongly correlated with 1-MU, 1,3-DMU, 1,7-DMU, 1,3,7-TMU, 1-MX, 1,3-DMX, 1,7-DMX, 1,3,7-TMX, and AAMU) was positively correlated with risk of MetS (OR = 1.27, p < 0.001) and all its components (all ORs > 1, all p-values < 0.001) in the unadjusted models, while in the adjusted models, it was positively correlated with MetS (OR = 1.16, p = 0.042) and central obesity (OR = 1.22, p < 0.001). In the unadjusted model, there were significant associations between the second PC (PC2, correlated with 3-MU, 7-MU, 3,7-DMU, 3-MX, 7-MX, and 3,7-DMX) and MetS (OR = 1.11, P = 0.030) and central obesity (OR = 1.16, P < 0.001), while in the adjusted models (adjustment variables include gender, age, race/ethnicity, education level and income-poverty ratio, smoking status, drinking, and physical activity), PC2 was positively associated with MetS (OR = 1.15, p = 0.035) and central obesity (OR = 1.15, p = 0.005) and negatively associated with raised triglycerides (TG) (OR = 0.84, p = 0.008). Moreover, we observed U-shaped associations between PC1 and the risk of raised TG both in unadjusted (Pnon-linear = 0.017) and adjusted (Pnon-linear = 0.014) models. Conclusion Urinary caffeine metabolites were positively associated with the risk of MetS and its components through different linear or non-linear patterns.
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Affiliation(s)
- Jianli Zhou
- Department of Science and Education, Guilin People’s Hospital, Guilin, China
| | - Linyuan Qin
- Department of Epidemiology and Health Statistics, School of Public Health, Guilin Medical University, Guilin, China
- Guangxi Key laboratory of Environmental Exposomics and Entire Lifecycle Health, Guilin, China
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Lin F, Shi Y, Zou X, Wang H, Fu S, Wang X, Yang Z, Cai G, Cai G, Wu X. Coffee consumption and all-cause and cardiovascular mortality in older adults: should we consider cognitive function? Front Nutr 2023; 10:1150992. [PMID: 37941773 PMCID: PMC10628482 DOI: 10.3389/fnut.2023.1150992] [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: 01/25/2023] [Accepted: 10/09/2023] [Indexed: 11/10/2023] Open
Abstract
Background The association between coffee and mortality risk has been found in most previous studies, and recent studies have found an association between coffee consumption and cognition. However, there is still a lack of research exploring whether the association between coffee and mortality is influenced by cognitive function. Objective The purpose of this study was to explore the association of coffee, caffeine intake in coffee and decaffeinated coffee with all-cause mortality and cardiovascular disease (CVD) mortality in older adults with different cognitive performances. Methods The study was based on data from the National Health and Nutrition Examination Survey (NHANES) 2011-2014. Coffee and caffeine consumption data were obtained from two 24-h dietary recalls. Individual cognitive functions were assessed by CERAD-word learning test (CERAD-WLT), animal fluency test (AFT), and digit symbol substitution test (DSST). In addition, principal component analysis (PCA) was performed with the above test scores to create global cognitive score. The lowest quartile of scores was used to classify cognitive performance. Cox regression and restricted cubic spline (RCS) were applied to assess the relationship between coffee and caffeine consumption and mortality. Results In the joint effects analysis, we found that those with cognitive impairment and who reported without drinking coffee had the highest risk of all-cause and cardiovascular mortality compared with others. In the analysis of population with cognitive impairment, for all-cause mortality, those who showed cognitive impairment in the AFT displayed a significant negative association between their total coffee consumption and mortality {T3 (HR [95% CI]), 0.495 [0.291-0.840], p = 0.021 (trend analysis)}. For DSST and global cognition, similar results were observed. Whereas for CERAD-WLT, restricted cubic spline (RCS) showed a "U-shaped" association between coffee consumption and mortality. For CVD mortality, a significant negative trend in coffee consumption and death was observed only in people with cognitive impairment in AFT or DSST. In addition, we observed that decaffeinated coffee was associated with reduced mortality in people with cognitive impairment. Conclusion Our study suggested that the association between coffee consumption and mortality is influenced by cognition and varies with cognitive impairment in different cognitive domains.
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Affiliation(s)
- Fabin Lin
- Department of Neurology, Center for Cognitive Neurology, Institute of Clinical Neurology, Fujian Medical University Union Hospital, Fuzhou, China
- Fujian Institute of Geriatrics, Fujian Medical University Union Hospital, Fuzhou, China
- Fujian Key Laboratory of Molecular Neurology, Fujian Medical University, Fuzhou, China
- Department of Neurosurgery, Fujian Medical University Union Hospital, Fuzhou, China
| | - Yisen Shi
- Department of Neurology, Center for Cognitive Neurology, Institute of Clinical Neurology, Fujian Medical University Union Hospital, Fuzhou, China
- Fujian Institute of Geriatrics, Fujian Medical University Union Hospital, Fuzhou, China
- Fujian Key Laboratory of Molecular Neurology, Fujian Medical University, Fuzhou, China
| | - Xinyang Zou
- Department of Neurology, Center for Cognitive Neurology, Institute of Clinical Neurology, Fujian Medical University Union Hospital, Fuzhou, China
- Fujian Institute of Geriatrics, Fujian Medical University Union Hospital, Fuzhou, China
- Fujian Key Laboratory of Molecular Neurology, Fujian Medical University, Fuzhou, China
| | - Huaicheng Wang
- Department of Neurology, Center for Cognitive Neurology, Institute of Clinical Neurology, Fujian Medical University Union Hospital, Fuzhou, China
- Fujian Institute of Geriatrics, Fujian Medical University Union Hospital, Fuzhou, China
- Fujian Key Laboratory of Molecular Neurology, Fujian Medical University, Fuzhou, China
| | - Shibo Fu
- Department of Neurology, Center for Cognitive Neurology, Institute of Clinical Neurology, Fujian Medical University Union Hospital, Fuzhou, China
- Fujian Institute of Geriatrics, Fujian Medical University Union Hospital, Fuzhou, China
- Fujian Key Laboratory of Molecular Neurology, Fujian Medical University, Fuzhou, China
| | - Xuefei Wang
- Department of Neurology, Center for Cognitive Neurology, Institute of Clinical Neurology, Fujian Medical University Union Hospital, Fuzhou, China
- Fujian Institute of Geriatrics, Fujian Medical University Union Hospital, Fuzhou, China
- Fujian Key Laboratory of Molecular Neurology, Fujian Medical University, Fuzhou, China
| | - Zeqiang Yang
- Department of Neurology, Center for Cognitive Neurology, Institute of Clinical Neurology, Fujian Medical University Union Hospital, Fuzhou, China
- Fujian Institute of Geriatrics, Fujian Medical University Union Hospital, Fuzhou, China
- Fujian Key Laboratory of Molecular Neurology, Fujian Medical University, Fuzhou, China
| | - Guofa Cai
- School of Information Engineering, Guangdong University of Technology, Guangzhou, China
| | - Guoen Cai
- Department of Neurology, Center for Cognitive Neurology, Institute of Clinical Neurology, Fujian Medical University Union Hospital, Fuzhou, China
- Fujian Institute of Geriatrics, Fujian Medical University Union Hospital, Fuzhou, China
- Fujian Key Laboratory of Molecular Neurology, Fujian Medical University, Fuzhou, China
| | - Xilin Wu
- Department of Neurology, Center for Cognitive Neurology, Institute of Clinical Neurology, Fujian Medical University Union Hospital, Fuzhou, China
- Fujian Institute of Geriatrics, Fujian Medical University Union Hospital, Fuzhou, China
- Fujian Key Laboratory of Molecular Neurology, Fujian Medical University, Fuzhou, China
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Reza-Zaldívar E, Jacobo-Velázquez DA. Comprehensive Review of Nutraceuticals against Cognitive Decline Associated with Alzheimer's Disease. ACS OMEGA 2023; 8:35499-35522. [PMID: 37810693 PMCID: PMC10552500 DOI: 10.1021/acsomega.3c04855] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Accepted: 09/07/2023] [Indexed: 10/10/2023]
Abstract
Nowadays, nutraceuticals are being incorporated into functional foods or used as supplements with nonpharmacological approaches in the prevention and management of several illnesses, including age-related conditions and chronic neurodegenerative diseases. Nutraceuticals are apt for preventing and treating such disorders because of their nontoxic, non-habit-forming, and efficient bioactivities for promoting neurological well-being due to their ability to influence cellular processes such as neurogenesis, synaptogenesis, synaptic transmission, neuro-inflammation, oxidative stress, cell death modulation, and neuronal survival. The capacity of nutraceuticals to modify all of these processes reveals the potential to develop food-based strategies to aid brain development and enhance brain function, prevent and ameliorate neurodegeneration, and possibly reverse the cognitive impairment observed in Alzheimer's disease, the most predominant form of dementia in the elderly. The current review summarizes the experimental evidence of the neuroprotective capacity of nutraceuticals against Alzheimer's disease, describing their mechanisms of action and the in vitro and in vivo models applied to evaluate their neuroprotective potential.
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Affiliation(s)
- Edwin
E. Reza-Zaldívar
- Tecnologico
de Monterrey, Institute for Obesity Research, Av. Eugenio Garza Sada 2501 Sur, C. 64849 Monterrey, NL, Mexico
| | - Daniel A. Jacobo-Velázquez
- Tecnologico
de Monterrey, Institute for Obesity Research, Av. Eugenio Garza Sada 2501 Sur, C. 64849 Monterrey, NL, Mexico
- Tecnologico
de Monterrey, Escuela de Ingeniería
y Ciencias, Campus Guadalajara, Av. General Ramon Corona 2514, C. 45201 Zapopan, Jalisco, Mexico
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Merighi S, Travagli A, Nigro M, Pasquini S, Cappello M, Contri C, Varani K, Vincenzi F, Borea PA, Gessi S. Caffeine for Prevention of Alzheimer's Disease: Is the A 2A Adenosine Receptor Its Target? Biomolecules 2023; 13:967. [PMID: 37371547 DOI: 10.3390/biom13060967] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Revised: 05/30/2023] [Accepted: 06/06/2023] [Indexed: 06/29/2023] Open
Abstract
Alzheimer's disease (AD) is the most prevalent kind of dementia with roughly 135 million cases expected in the world by 2050. Unfortunately, current medications for the treatment of AD can only relieve symptoms but they do not act as disease-modifying agents that can stop the course of AD. Caffeine is one of the most widely used drugs in the world today, and a number of clinical studies suggest that drinking coffee may be good for health, especially in the fight against neurodegenerative conditions such as AD. Experimental works conducted "in vivo" and "in vitro" provide intriguing evidence that caffeine exerts its neuroprotective effects by antagonistically binding to A2A receptors (A2ARs), a subset of GPCRs that are triggered by the endogenous nucleoside adenosine. This review provides a summary of the scientific data supporting the critical role that A2ARs play in memory loss and cognitive decline, as well as the evidence supporting the protective benefits against neurodegeneration that may be attained by caffeine's antagonistic action on these receptors. They are a novel and fascinating target for regulating and enhancing synaptic activity, achieving symptomatic and potentially disease-modifying effects, and protecting against neurodegeneration.
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Affiliation(s)
- Stefania Merighi
- Department of Translational Medicine and for Romagna, University of Ferrara, 44121 Ferrara, Italy
| | - Alessia Travagli
- Department of Translational Medicine and for Romagna, University of Ferrara, 44121 Ferrara, Italy
| | - Manuela Nigro
- Department of Translational Medicine and for Romagna, University of Ferrara, 44121 Ferrara, Italy
| | - Silvia Pasquini
- Department of Translational Medicine and for Romagna, University of Ferrara, 44121 Ferrara, Italy
| | - Martina Cappello
- Department of Translational Medicine and for Romagna, University of Ferrara, 44121 Ferrara, Italy
| | - Chiara Contri
- Department of Translational Medicine and for Romagna, University of Ferrara, 44121 Ferrara, Italy
| | - Katia Varani
- Department of Translational Medicine and for Romagna, University of Ferrara, 44121 Ferrara, Italy
| | - Fabrizio Vincenzi
- Department of Translational Medicine and for Romagna, University of Ferrara, 44121 Ferrara, Italy
| | | | - Stefania Gessi
- Department of Translational Medicine and for Romagna, University of Ferrara, 44121 Ferrara, Italy
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Launay A, Nebie O, Vijaya Shankara J, Lebouvier T, Buée L, Faivre E, Blum D. The role of adenosine A 2A receptors in Alzheimer's disease and tauopathies. Neuropharmacology 2023; 226:109379. [PMID: 36572177 DOI: 10.1016/j.neuropharm.2022.109379] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2022] [Revised: 12/12/2022] [Accepted: 12/13/2022] [Indexed: 12/24/2022]
Abstract
Adenosine signals through four distinct G protein-coupled receptors that are located at various synapses, cell types and brain areas. Through them, adenosine regulates neuromodulation, neuronal signaling, learning and cognition as well as the sleep-wake cycle, all strongly impacted in neurogenerative disorders, among which Alzheimer's Disease (AD). AD is a complex form of cognitive deficits characterized by two pathological hallmarks: extracellular deposits of aggregated β-amyloid peptides and intraneuronal fibrillar aggregates of hyper- and abnormally phosphorylated Tau proteins. Both lesions contribute to the early dysfunction and loss of synapses which are strongly associated to the development of cognitive decline in AD patients. The present review focuses on the pathophysiological impact of the A2ARs dysregulation observed in cognitive area from AD patients. We are reviewing not only evidence of the cellular changes in A2AR levels in pathological conditions but also describe what is currently known about their consequences in term of synaptic plasticity, neuro-glial miscommunication and memory abilities. We finally summarize the proof-of-concept studies that support A2AR as credible targets and the clinical interest to repurpose adenosine drugs for the treatment of AD and related disorders. This article is part of the Special Issue on "Purinergic Signaling: 50 years".
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Affiliation(s)
- Agathe Launay
- Univ. Lille, Inserm, CHU Lille, UMR-S1172 LilNCog - Lille Neuroscience & Cognition, F-59000, Lille, France; Alzheimer and Tauopathies, LabEx DISTALZ, France
| | - Ouada Nebie
- Univ. Lille, Inserm, CHU Lille, UMR-S1172 LilNCog - Lille Neuroscience & Cognition, F-59000, Lille, France; Alzheimer and Tauopathies, LabEx DISTALZ, France
| | - Jhenkruthi Vijaya Shankara
- Univ. Lille, Inserm, CHU Lille, UMR-S1172 LilNCog - Lille Neuroscience & Cognition, F-59000, Lille, France; Alzheimer and Tauopathies, LabEx DISTALZ, France
| | - Thibaud Lebouvier
- Univ. Lille, Inserm, CHU Lille, UMR-S1172 LilNCog - Lille Neuroscience & Cognition, F-59000, Lille, France; Alzheimer and Tauopathies, LabEx DISTALZ, France; CHU Lille, Memory Clinic, Lille, France
| | - Luc Buée
- Univ. Lille, Inserm, CHU Lille, UMR-S1172 LilNCog - Lille Neuroscience & Cognition, F-59000, Lille, France; Alzheimer and Tauopathies, LabEx DISTALZ, France
| | - Emilie Faivre
- Univ. Lille, Inserm, CHU Lille, UMR-S1172 LilNCog - Lille Neuroscience & Cognition, F-59000, Lille, France; Alzheimer and Tauopathies, LabEx DISTALZ, France
| | - David Blum
- Univ. Lille, Inserm, CHU Lille, UMR-S1172 LilNCog - Lille Neuroscience & Cognition, F-59000, Lille, France; Alzheimer and Tauopathies, LabEx DISTALZ, France.
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Ding Q, Xu YM, Lau ATY. The Epigenetic Effects of Coffee. Molecules 2023; 28:molecules28041770. [PMID: 36838754 PMCID: PMC9958838 DOI: 10.3390/molecules28041770] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Revised: 12/25/2022] [Accepted: 12/27/2022] [Indexed: 02/16/2023] Open
Abstract
In this review, we discuss the recent knowledge regarding the epigenetic effects of coffee extract and the three essential active ingredients in coffee (caffeine, chlorogenic acid, and caffeic acid). As a popular beverage, coffee has many active ingredients which have a variety of biological functions such as insulin sensitization, improvement of sugar metabolism, antidiabetic properties, and liver protection. However, recent researches have shown that coffee is not only beneficial for human, but also bad, which may be due to its complex components. Studies suggest that coffee extract and its components can potentially impact gene expression via alteration of DNA methylation, histone modifications, and ncRNA expression; thus, exert long lasting impacts on the epigenome. More importantly, coffee consumption during pregnancy has been linked to multiple negative effects on offspring due to epigenetic modifications; on the other hand, it has also been linked to improvements in many diseases, including cancer. Therefore, understanding more about the epigenetic effects associated with coffee components is crucial to finding ways for improving human health.
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Affiliation(s)
| | - Yan-Ming Xu
- Correspondence: (Y.-M.X.); (A.T.Y.L.); Tel.: +86-754-8890-0437 (Y.-M.X.); +86-754-8853-0052 (A.T.Y.L.)
| | - Andy T. Y. Lau
- Correspondence: (Y.-M.X.); (A.T.Y.L.); Tel.: +86-754-8890-0437 (Y.-M.X.); +86-754-8853-0052 (A.T.Y.L.)
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Lopes Boschetti JC, Soares KL, Carvalho GR, Filho ACV, Ton AMM, Pereira TDMC, Scherer R. CGAs-Rich Conilon Coffee Consumption Improves Cognition and Reduces Oxidative Stress in Elderly with Alzheimer's Disease: A Pilot Study. J Alzheimers Dis 2023; 96:1547-1554. [PMID: 37980673 DOI: 10.3233/jad-230843] [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] [Indexed: 11/21/2023]
Abstract
BACKGROUND The consumption of coffee has been associated with beneficial effects when it comes to Alzheimer's disease (AD). However, to the best of our knowledge, there are no studies on Conilon coffee consumption in elderly people with AD. OBJECTIVE Evaluate the effects of Conilon coffee consumption in elderly with AD. METHODS The study was carried out with 9 participants who consumed a minimum of 2 cups (200 mL cup) of Conilon coffee per day for 90 days. Cognitive assessment was done before (T0) and after 90 days (T90). Blood analysis was conducted at T0 and T90, as well as the assessment of advanced oxidation protein products (AOPP) and thiobarbituric acid reactive species (TBARS). The levels of chlorogenic acids and caffeine in the coffee beverage were quantified by liquid chromatography. RESULTS During the treatment, the participants consumed at least 550 mg and 540 mg of CGAs and caffeine, respectively. A significant improvement in cognition between T0 and T90 was observed as per MMSE, CTP, and clock drawing tests. Furthermore, there was a significant reduction in AOPP (37%) and TBARS (60%), indicating a reduction in oxidative stress. The consumption of the coffee did not significantly alter any blood parameter, which confirms the safety of the coffee treatment during the 90 days. CONCLUSIONS Our study demonstrated for the first time that regular consumption of coffee with high amounts of CGAs and caffeine improves cognitive functions and reduces oxidative stress, without altering blood parameters that indicate possible signs of toxicity in classical target organs.
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Affiliation(s)
| | - Karla Lírio Soares
- Pharmaceutical Sciences Graduate Program, Universidade Vila Velha, ES, Brazil
| | | | | | | | - Thiago de Melo Costa Pereira
- Pharmaceutical Sciences Graduate Program, Universidade Vila Velha, ES, Brazil
- Federal Institute of Education, Science and Technology (IFES), Vila Velha, ES, Brazil
| | - Rodrigo Scherer
- Pharmaceutical Sciences Graduate Program, Universidade Vila Velha, ES, Brazil
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10
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Reshetnikov DV, Ivanov ID, Baev DS, Rybalova TV, Mozhaitsev ES, Patrushev SS, Vavilin VA, Tolstikova TG, Shults EE. Design, Synthesis and Assay of Novel Methylxanthine-Alkynylmethylamine Derivatives as Acetylcholinesterase Inhibitors. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27248787. [PMID: 36557921 PMCID: PMC9788520 DOI: 10.3390/molecules27248787] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Revised: 12/01/2022] [Accepted: 12/07/2022] [Indexed: 12/14/2022]
Abstract
Xanthine derivatives have been a great area of interest for the development of potent bioactive agents. Thirty-eight methylxanthine derivatives as acetylcholinesterase inhibitors (AChE) were designed and synthesized. Suzuki-Miyaura cross-coupling reactions of 8-chlorocaffeine with aryl(hetaryl)boronic acids, the CuAAC reaction of 8-ethynylcaffeine with several azides, and the copper(I) catalyzed one-pot three-component reaction (A3-coupling) of 8-ethynylcaffeine, 1-(prop-2-ynyl)-, or 7-(prop-2-ynyl)-dimethylxanthines with formaldehyde and secondary amines were the main approaches for the synthesis of substituted methylxanthine derivatives (yield 53-96%). The bioactivity of all new compounds was evaluated by Ellman's method, and the results showed that most of the synthesized compounds displayed good and moderate acetylcholinesterase (AChE) inhibitory activities in vitro. The structure-activity relationships were also discussed. The data revealed that compounds 53, 59, 65, 66, and 69 exhibited the most potent inhibitory activity against AChE with IC50 of 0.25, 0.552, 0.089, 0.746, and 0.121 μM, respectively. The binding conformation and simultaneous interaction modes were further clarified by molecular docking studies.
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Affiliation(s)
- Danila V. Reshetnikov
- N.N. Vorozhtsov Novosibirsk Institute of Organic Chemistry, Siberian Branch of the Russian Academy of Sciences, Lavrentyev Ave, 9, 630090 Novosibirsk, Russia
| | - Igor D. Ivanov
- The Federal Research Center Institute of Molecular Biology and Biophysics, Timakov Str., 2/12, 630117 Novosibirsk, Russia
| | - Dmitry S. Baev
- N.N. Vorozhtsov Novosibirsk Institute of Organic Chemistry, Siberian Branch of the Russian Academy of Sciences, Lavrentyev Ave, 9, 630090 Novosibirsk, Russia
| | - Tatyana V. Rybalova
- N.N. Vorozhtsov Novosibirsk Institute of Organic Chemistry, Siberian Branch of the Russian Academy of Sciences, Lavrentyev Ave, 9, 630090 Novosibirsk, Russia
| | - Evgenii S. Mozhaitsev
- N.N. Vorozhtsov Novosibirsk Institute of Organic Chemistry, Siberian Branch of the Russian Academy of Sciences, Lavrentyev Ave, 9, 630090 Novosibirsk, Russia
| | - Sergey S. Patrushev
- N.N. Vorozhtsov Novosibirsk Institute of Organic Chemistry, Siberian Branch of the Russian Academy of Sciences, Lavrentyev Ave, 9, 630090 Novosibirsk, Russia
- Novosibirsk State University, Pirogova Str., 1, 630090 Novosibirsk, Russia
| | - Valentin A. Vavilin
- The Federal Research Center Institute of Molecular Biology and Biophysics, Timakov Str., 2/12, 630117 Novosibirsk, Russia
- Novosibirsk State University, Pirogova Str., 1, 630090 Novosibirsk, Russia
| | - Tatyana G. Tolstikova
- N.N. Vorozhtsov Novosibirsk Institute of Organic Chemistry, Siberian Branch of the Russian Academy of Sciences, Lavrentyev Ave, 9, 630090 Novosibirsk, Russia
- Novosibirsk State University, Pirogova Str., 1, 630090 Novosibirsk, Russia
| | - Elvira E. Shults
- N.N. Vorozhtsov Novosibirsk Institute of Organic Chemistry, Siberian Branch of the Russian Academy of Sciences, Lavrentyev Ave, 9, 630090 Novosibirsk, Russia
- Correspondence: ; Tel.: +7-(383)-3308533
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Dhingra H, Choudhari SG. Alzheimer’s Disease: Understanding Its Novel Drug Delivery Systems and Treatments. Cureus 2022; 14:e31394. [DOI: 10.7759/cureus.31394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Accepted: 11/11/2022] [Indexed: 11/13/2022] Open
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Fišar Z. Linking the Amyloid, Tau, and Mitochondrial Hypotheses of Alzheimer's Disease and Identifying Promising Drug Targets. Biomolecules 2022; 12:1676. [PMID: 36421690 PMCID: PMC9687482 DOI: 10.3390/biom12111676] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Revised: 10/23/2022] [Accepted: 11/09/2022] [Indexed: 08/27/2023] Open
Abstract
Damage or loss of brain cells and impaired neurochemistry, neurogenesis, and synaptic and nonsynaptic plasticity of the brain lead to dementia in neurodegenerative diseases, such as Alzheimer's disease (AD). Injury to synapses and neurons and accumulation of extracellular amyloid plaques and intracellular neurofibrillary tangles are considered the main morphological and neuropathological features of AD. Age, genetic and epigenetic factors, environmental stressors, and lifestyle contribute to the risk of AD onset and progression. These risk factors are associated with structural and functional changes in the brain, leading to cognitive decline. Biomarkers of AD reflect or cause specific changes in brain function, especially changes in pathways associated with neurotransmission, neuroinflammation, bioenergetics, apoptosis, and oxidative and nitrosative stress. Even in the initial stages, AD is associated with Aβ neurotoxicity, mitochondrial dysfunction, and tau neurotoxicity. The integrative amyloid-tau-mitochondrial hypothesis assumes that the primary cause of AD is the neurotoxicity of Aβ oligomers and tau oligomers, mitochondrial dysfunction, and their mutual synergy. For the development of new efficient AD drugs, targeting the elimination of neurotoxicity, mutual potentiation of effects, and unwanted protein interactions of risk factors and biomarkers (mainly Aβ oligomers, tau oligomers, and mitochondrial dysfunction) in the early stage of the disease seems promising.
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Affiliation(s)
- Zdeněk Fišar
- Department of Psychiatry, First Faculty of Medicine, Charles University and General University Hospital in Prague, Ke Karlovu 11, 120 00 Prague, Czech Republic
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