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Basavarajappa BS, Subbanna S. Unlocking the epigenetic symphony: histone acetylation's impact on neurobehavioral change in neurodegenerative disorders. Epigenomics 2024; 16:331-358. [PMID: 38321930 PMCID: PMC10910622 DOI: 10.2217/epi-2023-0428] [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: 12/04/2023] [Accepted: 01/23/2024] [Indexed: 02/08/2024] Open
Abstract
Recent genomics and epigenetic advances have empowered the exploration of DNA/RNA methylation and histone modifications crucial for gene expression in response to stress, aging and disease. Interest in understanding neuronal plasticity's epigenetic mechanisms, influencing brain rewiring amid development, aging and neurodegenerative disorders, continues to grow. Histone acetylation dysregulation, a commonality in diverse brain disorders, has become a therapeutic focus. Histone acetyltransferases and histone deacetylases have emerged as promising targets for neurodegenerative disorder treatment. This review delves into histone acetylation regulation, potential therapies and future perspectives for disorders like Alzheimer's, Parkinson's and Huntington's. Exploring genetic-environmental interplay through models and studies reveals molecular changes, behavioral insights and early intervention possibilities targeting the epigenome in at-risk individuals.
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Affiliation(s)
- Balapal S Basavarajappa
- Center for Dementia Research, Nathan Kline Institute for Psychiatric Research, Orangeburg, NY 10962, USA
- Molecular Imaging & Neuropathology Area, New York State Psychiatric Institute, NY 10032, USA
- Department of Psychiatry, Columbia University Irving Medical Center, NY 10032, USA
- Department of Psychiatry, New York University Langone Medical Center, NY 10016, USA
| | - Shivakumar Subbanna
- Center for Dementia Research, Nathan Kline Institute for Psychiatric Research, Orangeburg, NY 10962, USA
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2
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Jana A, Bellver-Sanchis A, Griñán-Ferré C, Banerjee DR. Repurposing of Raltitrexed as an Effective G9a/EHMT2 Inhibitor and Promising Anti-Alzheimer's Agent. ACS Med Chem Lett 2023; 14:1531-1536. [PMID: 37974951 PMCID: PMC10641905 DOI: 10.1021/acsmedchemlett.3c00344] [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: 08/06/2023] [Accepted: 10/09/2023] [Indexed: 11/19/2023] Open
Abstract
Herein, we report for the first time the G9a/EHMT2 inhibition and anti-Alzheimer's activities of the drug raltitrexed. G9a is a lysine methyltransferase that mainly dimethylates the H3K9 of chromatin, which triggers the repression of genes epigenetically, leading to various diseased conditions, including Alzheimer's disease (AD). First, we demonstrate that raltitrexed inhibits G9a at 120 nM. Moreover, raltitrexed lowers the total H3K9me2/H3K9 levels in AD transgenic C. elegans CL2006 worms, indicating that raltitrexed targets G9a directly. As toxicity is the bottleneck in G9a drug discovery, we conducted detailed in silico toxicity (TOPKAT) analyses of raltitrexed and measured the food consumption by C. elegans, demonstrating that raltitrexed's toxicity/function range is safe for the worm's growth. Moreover, we demonstrate that raltitrexed enhances the locomotive function of worms dose-dependently. Finally, we show that raltitrexed reduced the Aβ aggregates in worms up to 47%, highlighting the potential of raltitrexed in AD treatment.
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Affiliation(s)
- Abhisek Jana
- Department
of Chemistry, National Institute of Technology
Durgapur, M G Avenue, Durgapur-713209 , West Bengal, India
| | - Aina Bellver-Sanchis
- Pharmacology
Section, Department of Pharmacology, Toxicology and Therapeutic Chemistry,
Faculty of Pharmacy and Food Sciences, Institute of Neuroscience, Universitat de Barcelona (NeuroUB), Av. Joan XXIII 27−31, 08028 Barcelona, Spain
| | - Christian Griñán-Ferré
- Pharmacology
Section, Department of Pharmacology, Toxicology and Therapeutic Chemistry,
Faculty of Pharmacy and Food Sciences, Institute of Neuroscience, Universitat de Barcelona (NeuroUB), Av. Joan XXIII 27−31, 08028 Barcelona, Spain
- Centro
de Investigación en Red, Enfermedades Neurodegenerativas (CIBERNED), Instituto de Salud Carlos III, 28029 Madrid, Spain
| | - Deb Ranjan Banerjee
- Department
of Chemistry, National Institute of Technology
Durgapur, M G Avenue, Durgapur-713209 , West Bengal, India
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Smolen P, Dash PK, Redell JB. Traumatic brain injury-associated epigenetic changes and the risk for neurodegenerative diseases. Front Neurosci 2023; 17:1259405. [PMID: 37795186 PMCID: PMC10546067 DOI: 10.3389/fnins.2023.1259405] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2023] [Accepted: 09/04/2023] [Indexed: 10/06/2023] Open
Abstract
Epidemiological studies have shown that traumatic brain injury (TBI) increases the risk for developing neurodegenerative diseases (NDs). However, molecular mechanisms that underlie this risk are largely unidentified. TBI triggers widespread epigenetic modifications. Similarly, NDs such as Alzheimer's or Parkinson's are associated with numerous epigenetic changes. Although epigenetic changes can persist after TBI, it is unresolved if these modifications increase the risk of later ND development and/or dementia. We briefly review TBI-related epigenetic changes, and point out putative feedback loops that might contribute to long-term persistence of some modifications. We then focus on evidence suggesting persistent TBI-associated epigenetic changes may contribute to pathological processes (e.g., neuroinflammation) which may facilitate the development of specific NDs - Alzheimer's disease, Parkinson's disease, or chronic traumatic encephalopathy. Finally, we discuss possible directions for TBI therapies that may help prevent or delay development of NDs.
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Affiliation(s)
- Paul Smolen
- Department of Neurobiology and Anatomy, McGovern Medical School, University of Texas Health Science Center, Houston, TX, United States
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Kachhawaha AS, Mishra S, Tiwari AK. Epigenetic control of heredity. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2023; 198:25-60. [PMID: 37225323 DOI: 10.1016/bs.pmbts.2023.03.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Epigenetics is the field of science that deals with the study of changes in gene function that do not involve changes in DNA sequence and are heritable while epigenetics inheritance is the process of transmission of epigenetic modifications to the next generation. It can be transient, intergenerational, or transgenerational. There are various epigenetic modifications involving mechanisms such as DNA methylation, histone modification, and noncoding RNA expression, all of which are inheritable. In this chapter, we summarize the information on epigenetic inheritance, its mechanism, inheritance studies on various organisms, factors affecting epigenetic modifications and their inheritance, and the role of epigenetic inheritance in the heritability of diseases.
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Affiliation(s)
- Akanksha Singh Kachhawaha
- Laboratory of Forensic Chemistry & Toxicology, School of Forensic Sciences, National Forensic Sciences University (NFSU), Gandhinagar, Gujarat, India
| | - Sarita Mishra
- Laboratory of Forensic Chemistry & Toxicology, School of Forensic Sciences, National Forensic Sciences University (NFSU), Gandhinagar, Gujarat, India
| | - Anand Krishna Tiwari
- Genetics & Developmental Biology Laboratory, Department of Biotechnology & Bioengineering, Institute of Advanced Research, Gandhinagar, Gujarat, India.
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Macciotta NPP, Dimauro C, Degano L, Vicario D, Cesarani A. A transgenerational study on the effect of great-granddam birth month on granddaughter EBV for production traits in Italian Simmental cattle. J Dairy Sci 2023; 106:2588-2597. [PMID: 36870840 DOI: 10.3168/jds.2022-22455] [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: 06/28/2022] [Accepted: 11/08/2022] [Indexed: 03/06/2023]
Abstract
Heat tolerance is a key feature of resilient animals. Offspring of animals that suffer environmental stress during pregnancy could show physiological, morphological, and metabolic modifications. This is due to a dynamic reprogramming of the epigenetics of the mammalian genome that occurs in the early life cycle. Thus, the aim of this study was to investigate the extent of the transgenerational effect of heat stress during the pregnancy of Italian Simmental cows. The effects of dam and granddam birth months (as indicator of pregnancy period) on their daughter and granddaughter estimated breeding values (EBV) for some dairy traits as well as of the temperature-humidity index (THI) during the pregnancy were tested. A total of 128,437 EBV (milk, fat, and protein yields, and somatic cell score) were provided by the Italian Association of Simmental Breeders. The best birth months (of both dam and granddam) for milk yield and protein yield were May and June, whereas the worst were January and March. Great-granddam pregnancies developed during the winter and spring seasons positively affected the EBV for milk and protein yields of their great-granddaughters; in contrast, pregnancies during summer and autumn had negative effects. These findings were confirmed by the effects of maximum and minimum THI in different parts of the great-granddam pregnancy on the performances of their great-granddaughters. Thus, a negative effect of high temperatures during the pregnancy of female ancestors was observed. Results of the present study suggest a transgenerational epigenetic inheritance in Italian Simmental cattle due to environmental stressors.
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Affiliation(s)
- Nicolò P P Macciotta
- Departimento di Agraria, Università degli Studi di Sassari, Sassari 07100, Italy
| | - Corrado Dimauro
- Departimento di Agraria, Università degli Studi di Sassari, Sassari 07100, Italy
| | - Lorenzo Degano
- Associazione Nazionale Allevatori Bovini di Razza Pezzata Rossa Italiana, Udine 33100, Italy
| | - Daniele Vicario
- Associazione Nazionale Allevatori Bovini di Razza Pezzata Rossa Italiana, Udine 33100, Italy
| | - Alberto Cesarani
- Departimento di Agraria, Università degli Studi di Sassari, Sassari 07100, Italy; Department of Animal and Dairy Science, University of Georgia, Athens 30602.
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Bartra C, Irisarri A, Villoslada A, Corpas R, Aguirre S, García-Lara E, Suñol C, Pallàs M, Griñán-Ferré C, Sanfeliu C. Neuroprotective Epigenetic Changes Induced by Maternal Treatment with an Inhibitor of Soluble Epoxide Hydrolase Prevents Early Alzheimer's Disease Neurodegeneration. Int J Mol Sci 2022; 23:ijms232315151. [PMID: 36499477 PMCID: PMC9740580 DOI: 10.3390/ijms232315151] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 11/23/2022] [Accepted: 11/29/2022] [Indexed: 12/03/2022] Open
Abstract
Modulation of Alzheimer's disease (AD) risk begins early in life. During embryo development and postnatal maturation, the brain receives maternal physiological influences and establishes epigenetic patterns that build its level of resilience to late-life diseases. The soluble epoxide hydrolase inhibitor N-[1-(1-oxopropyl)-4-piperidinyl]-N'-[4-(trifluoromethoxy)phenyl] urea (TPPU), reported as ant-inflammatory and neuroprotective against AD pathology in the adult 5XFAD mouse model of AD, was administered to wild-type (WT) female mice mated to heterozygous 5XFAD males during gestation and lactation. Two-month-old 5XFAD male and female offspring of vehicle-treated dams showed memory loss as expected. Remarkably, maternal treatment with TPPU fully prevented memory loss in 5XFAD. TPPU-induced brain epigenetic changes in both WT and 5XFAD mice, modulating global DNA methylation (5-mC) and hydroxymethylation (5-hmC) and reducing the gene expression of some histone deacetylase enzymes (Hdac1 and Hdac2), might be on the basis of the long-term neuroprotection against cognitive impairment and neurodegeneration. In the neuropathological analysis, both WT and 5XFAD offspring of TPPU-treated dams showed lower levels of AD biomarkers of tau hyperphosphorylation and microglia activation (Trem2) than the offspring of vehicle-treated dams. Regarding sex differences, males and females were similarly protected by maternal TPPU, but females showed higher levels of AD risk markers of gliosis and neurodegeneration. Taken together, our results reveal that maternal treatment with TPPU impacts in preventing or delaying memory loss and AD pathology by inducing long-term modifications in the epigenetic machinery and its marks.
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Affiliation(s)
- Clara Bartra
- Institut d′Investigacions Biomèdiques de Barcelona (IIBB), Consejo Superior de Científicas (CSIC), 08036 Barcelona, Spain
- Institut d′Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), 08036 Barcelona, Spain
| | - Alba Irisarri
- Institut d′Investigacions Biomèdiques de Barcelona (IIBB), Consejo Superior de Científicas (CSIC), 08036 Barcelona, Spain
- Department of Pharmacology and Therapeutic Chemistry, Faculty of Pharmacy and Food Sciences, 08028 Barcelona, Spain
| | - Ainhoa Villoslada
- Institut d′Investigacions Biomèdiques de Barcelona (IIBB), Consejo Superior de Científicas (CSIC), 08036 Barcelona, Spain
| | - Rubén Corpas
- Institut d′Investigacions Biomèdiques de Barcelona (IIBB), Consejo Superior de Científicas (CSIC), 08036 Barcelona, Spain
- Institut d′Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), 08036 Barcelona, Spain
| | - Samuel Aguirre
- Institut d′Investigacions Biomèdiques de Barcelona (IIBB), Consejo Superior de Científicas (CSIC), 08036 Barcelona, Spain
- Department of Pharmacology and Therapeutic Chemistry, Faculty of Pharmacy and Food Sciences, 08028 Barcelona, Spain
| | - Elisa García-Lara
- Institut d′Investigacions Biomèdiques de Barcelona (IIBB), Consejo Superior de Científicas (CSIC), 08036 Barcelona, Spain
- Institut d′Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), 08036 Barcelona, Spain
| | - Cristina Suñol
- Institut d′Investigacions Biomèdiques de Barcelona (IIBB), Consejo Superior de Científicas (CSIC), 08036 Barcelona, Spain
- Institut d′Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), 08036 Barcelona, Spain
| | - Mercè Pallàs
- Department of Pharmacology and Therapeutic Chemistry, Faculty of Pharmacy and Food Sciences, 08028 Barcelona, Spain
- Institut de Neurociències, Universitat de Barcelona, 08028 Barcelona, Spain
| | - Christian Griñán-Ferré
- Department of Pharmacology and Therapeutic Chemistry, Faculty of Pharmacy and Food Sciences, 08028 Barcelona, Spain
- Institut de Neurociències, Universitat de Barcelona, 08028 Barcelona, Spain
| | - Coral Sanfeliu
- Institut d′Investigacions Biomèdiques de Barcelona (IIBB), Consejo Superior de Científicas (CSIC), 08036 Barcelona, Spain
- Institut d′Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), 08036 Barcelona, Spain
- Correspondence: ; Tel.: +34-93-363-8338
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da Silva DJF, Torres JL, Ericeira LP, Jardim NYV, da Costa VO, Carvalho JPR, Corrêa PGR, Bento-Torres J, Picanço-Diniz CW, Bento-Torres NVO. Pilates and Cognitive Stimulation in Dual Task an Intervention Protocol to Improve Functional Abilities and Minimize the Rate of Age-Related Cognitive Decline in Postmenopausal Women. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:13333. [PMID: 36293914 PMCID: PMC9603464 DOI: 10.3390/ijerph192013333] [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: 09/08/2022] [Revised: 09/30/2022] [Accepted: 10/08/2022] [Indexed: 06/16/2023]
Abstract
UNLABELLED It is already known the effectiveness of Pilates training on cognitive and functional abilities. It is also known that dual-task exercise and cognitive stimuli improve cognition and functional capacity. However, no previous report combined cognitive stimuli and Pilates in dual task and measured its effects on the cognitive and physical performances of postmenopausal women. OBJECTIVE To apply an interventional dual-task (PILATES-COG) protocol and to evaluate its influence on memory, language, and functional physical performances on healthy, community-dwelling postmenopausal older women. METHODS 47 women with amenorrhea for at least 12 months participated in this study. Those allocated on the PILATES-COG group underwent a 12-week, twice a week regimen of 50 min sessions of simultaneous mat Pilates exercise program and cognitive tasks. Cognitive and physical functional performance were assessed. Two-way mixed ANOVA was used for data analysis, and Bonferroni post hoc tests were used for within- and between-group comparisons. RESULTS The PILATES-COG group showed significant improvement after the intervention in semantic verbal fluency (p < 0.001; ηρ² = 0.268), phonological verbal fluency (p < 0.019; ηρ² = 0.143), immediate memory (p < 0.001; ηρ² = 0.258), evocation memory (p < 0.001 ηρ² = 0.282), lower-limb muscle strength (p < 0.001; ηρ² = 0.447), balance (p < 0.001; ηρ² = 0.398), and dual-ask cost (p < 0.05; ηρ² = 0.111) assessments on healthy, community-dwelling postmenopausal older women. CONCLUSION This is the first report of a feasible and effective approach using Pilates and cognitive stimulation in dual task for the reduction of age-related cognitive decline and the improvement of physical functional performance in healthy postmenopausal women.
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Affiliation(s)
- Daniel José Fontel da Silva
- Graduate Program in Human Movement Sciences, Federal University of Pará, Belém 66075-110, Brazil
- Neurodegeneration and Infection Research Laboratory, Institute of Biological Science, João de Barros Barreto University Hospital, Federal University of Pará, Belém 66073-005, Brazil
| | - Juliana Lima Torres
- Neurodegeneration and Infection Research Laboratory, Institute of Biological Science, João de Barros Barreto University Hospital, Federal University of Pará, Belém 66073-005, Brazil
| | - Luiza Pimentel Ericeira
- Neurodegeneration and Infection Research Laboratory, Institute of Biological Science, João de Barros Barreto University Hospital, Federal University of Pará, Belém 66073-005, Brazil
| | - Naina Yuki Vieira Jardim
- Neurodegeneration and Infection Research Laboratory, Institute of Biological Science, João de Barros Barreto University Hospital, Federal University of Pará, Belém 66073-005, Brazil
| | - Victor Oliveira da Costa
- Neurodegeneration and Infection Research Laboratory, Institute of Biological Science, João de Barros Barreto University Hospital, Federal University of Pará, Belém 66073-005, Brazil
| | - Josilayne Patrícia Ramos Carvalho
- Graduate Program in Human Movement Sciences, Federal University of Pará, Belém 66075-110, Brazil
- Neurodegeneration and Infection Research Laboratory, Institute of Biological Science, João de Barros Barreto University Hospital, Federal University of Pará, Belém 66073-005, Brazil
| | - Paola Geaninne Reis Corrêa
- Neurodegeneration and Infection Research Laboratory, Institute of Biological Science, João de Barros Barreto University Hospital, Federal University of Pará, Belém 66073-005, Brazil
| | - João Bento-Torres
- Graduate Program in Human Movement Sciences, Federal University of Pará, Belém 66075-110, Brazil
- Neurodegeneration and Infection Research Laboratory, Institute of Biological Science, João de Barros Barreto University Hospital, Federal University of Pará, Belém 66073-005, Brazil
| | - Cristovam Wanderley Picanço-Diniz
- Neurodegeneration and Infection Research Laboratory, Institute of Biological Science, João de Barros Barreto University Hospital, Federal University of Pará, Belém 66073-005, Brazil
| | - Natáli Valim Oliver Bento-Torres
- Graduate Program in Human Movement Sciences, Federal University of Pará, Belém 66075-110, Brazil
- Neurodegeneration and Infection Research Laboratory, Institute of Biological Science, João de Barros Barreto University Hospital, Federal University of Pará, Belém 66073-005, Brazil
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Zima L, West R, Smolen P, Kobori N, Hergenroeder G, Choi HA, Moore AN, Redell JB, Dash PK. Epigenetic Modifications and Their Potential Contribution to Traumatic Brain Injury Pathobiology and Outcome. J Neurotrauma 2022; 39:1279-1288. [PMID: 35481812 PMCID: PMC9529317 DOI: 10.1089/neu.2022.0128] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Epigenetic information is not permanently encoded in the DNA sequence, but rather consists of reversible, heritable modifications that regulate the gene expression profile of a cell. Epigenetic modifications can result in cellular changes that can be long lasting and include DNA methylation, histone methylation, histone acetylation, and RNA methylation. As epigenetic modifications are reversible, the enzymes that add (epigenetic writers), the proteins that decode (epigenetic readers), and the enzymes that remove (epigenetic erasers) these modifications can be targeted to alter cellular function and disease biology. While epigenetic modifications and their contributions are intense topics of current research in the context of a number of diseases, including cancer, inflammatory diseases, and Alzheimer disease, the study of epigenetics in the context of traumatic brain injury (TBI) is in its infancy. In this review, we will summarize the experimental and clinical findings demonstrating that TBI triggers epigenetic modifications, with a focus on changes in DNA methylation, histone methylation, and the translational utility of the universal methyl donor S-adenosylmethionine (SAM). Finally, we will review the evidence for using methyl donors as possible treatments for TBI-associated pathology and outcome.
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Affiliation(s)
- Laura Zima
- Department of Neurological Surgery, University of Texas Health Science Center McGovern Medical School, Houston, Texas, USA
| | - Rebecca West
- Department of Neurobiology and Anatomy, University of Texas Health Science Center McGovern Medical School, Houston, Texas, USA
| | - Paul Smolen
- Department of Neurobiology and Anatomy, University of Texas Health Science Center McGovern Medical School, Houston, Texas, USA
| | - Nobuhide Kobori
- Department of Neurobiology and Anatomy, University of Texas Health Science Center McGovern Medical School, Houston, Texas, USA
| | - Georgene Hergenroeder
- Department of Neurological Surgery, University of Texas Health Science Center McGovern Medical School, Houston, Texas, USA
| | - HuiMahn A. Choi
- Department of Neurological Surgery, University of Texas Health Science Center McGovern Medical School, Houston, Texas, USA
| | - Anthony N. Moore
- Department of Neurobiology and Anatomy, University of Texas Health Science Center McGovern Medical School, Houston, Texas, USA
| | - John B. Redell
- Department of Neurobiology and Anatomy, University of Texas Health Science Center McGovern Medical School, Houston, Texas, USA
| | - Pramod K. Dash
- Department of Neurobiology and Anatomy, University of Texas Health Science Center McGovern Medical School, Houston, Texas, USA
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Zhang M, Gong X, Ma W, Wen L, Wang Y, Yao H. A Study on the Correlation Between Age-Related Macular Degeneration and Alzheimer's Disease Based on the Application of Artificial Neural Network. Front Public Health 2022; 10:925147. [PMID: 35844883 PMCID: PMC9280183 DOI: 10.3389/fpubh.2022.925147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Accepted: 05/11/2022] [Indexed: 11/13/2022] Open
Abstract
Age-related Macular Degeneration (AMD) is a kind of irreversible vision loss or disease caused by retinal pigment epithelial cells and neuroretinal degeneration, which has become the main cause of vision loss and blindness of the elderly over 65 years old in developed countries. The main clinical manifestations are cognitive decline, mental symptoms and behavioral disorders, and the gradual decline of daily living ability. In this paper, a feature extraction method of electroencephalogram (EEG) signal based on multi-spectral image fusion of multi-brain regions is proposed based on artificial neural network (ANN). In this method, the brain is divided into several different brain regions, and the EEG signals of different brain regions are transformed into several multispectral images by combining with the multispectral image transformation method. Using Alzheimer's disease (AD) classification algorithm, the depth residual network model pre-trained in ImageNet was transferred to sMRI data set for fine adjustment, instead of training a brand-new model from scratch. The results show that the proposed method solves the problem of few available medical image samples and shortens the training time of ANN model.
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Affiliation(s)
- Meng Zhang
- Histology and Embryology Section, Qiqihar Medical University, Qiqihar, China
| | - Xuewu Gong
- The Second Affiliated Hospital of Qiqihar Medical University, Qiqihar, China
| | - Wenhui Ma
- Computer Experimental Teaching Center, Qiqihar Medical University, Qiqihar, China
| | - Libo Wen
- Physiology Section, Qiqihar Medical University, Qiqihar, China
| | - Yuejing Wang
- Histology and Embryology Section, Qiqihar Medical University, Qiqihar, China
| | - Hongbo Yao
- Histology and Embryology Section, Qiqihar Medical University, Qiqihar, China
- *Correspondence: Hongbo Yao
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Coppedè F, Cereda C, Lintas C, Stoccoro A. Editorial: Epigenetics of Neurodevelopmental, Neuromuscular and Neurodegenerative Disorders. Front Mol Neurosci 2022; 15:948827. [PMID: 35754706 PMCID: PMC9231183 DOI: 10.3389/fnmol.2022.948827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Accepted: 05/27/2022] [Indexed: 11/13/2022] Open
Affiliation(s)
- Fabio Coppedè
- Department of Translational Research and of New Surgical and Medical Technologies, University of Pisa, Pisa, Italy
| | - Cristina Cereda
- Department of Women, Mothers and Neonatal Care, Children's Hospital V. Buzzi, Milan, Italy
| | - Carla Lintas
- Laboratory of Medical Genetics, University Campus Bio-Medico of Rome, Rome, Italy
| | - Andrea Stoccoro
- Department of Translational Research and of New Surgical and Medical Technologies, University of Pisa, Pisa, Italy
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11
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Gauvrit T, Benderradji H, Buée L, Blum D, Vieau D. Early-Life Environment Influence on Late-Onset Alzheimer’s Disease. Front Cell Dev Biol 2022; 10:834661. [PMID: 35252195 PMCID: PMC8891536 DOI: 10.3389/fcell.2022.834661] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Accepted: 01/27/2022] [Indexed: 12/30/2022] Open
Abstract
With the expand of the population’s average age, the incidence of neurodegenerative disorders has dramatically increased over the last decades. Alzheimer disease (AD) which is the most prevalent neurodegenerative disease is mostly sporadic and primarily characterized by cognitive deficits and neuropathological lesions such as amyloid -β (Aβ) plaques and neurofibrillary tangles composed of hyper- and/or abnormally phosphorylated Tau protein. AD is considered a complex disease that arises from the interaction between environmental and genetic factors, modulated by epigenetic mechanisms. Besides the well-described cognitive decline, AD patients also exhibit metabolic impairments. Metabolic and cognitive perturbations are indeed frequently observed in the Developmental Origin of Health and Diseases (DOHaD) field of research which proposes that environmental perturbations during the perinatal period determine the susceptibility to pathological conditions later in life. In this review, we explored the potential influence of early environmental exposure to risk factors (maternal stress, malnutrition, xenobiotics, chemical factors … ) and the involvement of epigenetic mechanisms on the programming of late-onset AD. Animal models indicate that offspring exposed to early-life stress during gestation and/or lactation increase both AD lesions, lead to defects in synaptic plasticity and finally to cognitive impairments. This long-lasting epigenetic programming could be modulated by factors such as nutriceuticals, epigenetic modifiers or psychosocial behaviour, offering thus future therapeutic opportunity to protect from AD development.
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Affiliation(s)
- Thibaut Gauvrit
- Inserm, CHU Lille, U1172 LilNCog—Lille Neuroscience and Cognition, Université de Lille, Lille, France
- Alzheimer and Tauopathies, LabEx DISTALZ, Lille, France
| | - Hamza Benderradji
- Inserm, CHU Lille, U1172 LilNCog—Lille Neuroscience and Cognition, Université de Lille, Lille, France
- Alzheimer and Tauopathies, LabEx DISTALZ, Lille, France
| | - Luc Buée
- Inserm, CHU Lille, U1172 LilNCog—Lille Neuroscience and Cognition, Université de Lille, Lille, France
- Alzheimer and Tauopathies, LabEx DISTALZ, Lille, France
| | - David Blum
- Inserm, CHU Lille, U1172 LilNCog—Lille Neuroscience and Cognition, Université de Lille, Lille, France
- Alzheimer and Tauopathies, LabEx DISTALZ, Lille, France
| | - Didier Vieau
- Inserm, CHU Lille, U1172 LilNCog—Lille Neuroscience and Cognition, Université de Lille, Lille, France
- Alzheimer and Tauopathies, LabEx DISTALZ, Lille, France
- *Correspondence: Didier Vieau,
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Qiu H, Weng Q. Screening of Crucial Differentially-Methylated/Expressed Genes for Alzheimer's Disease. Am J Alzheimers Dis Other Demen 2022; 37:15333175221116220. [PMID: 35848539 PMCID: PMC10624077 DOI: 10.1177/15333175221116220] [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: 11/16/2022]
Abstract
Background: We aimed to make an integrated analysis of published transcriptome and DNA methylation dataset to ascertain the key differentially methylated and differentially expressed genes for Alzherimer's disease (AD). Methods: Two gene expression microarrays and 1 gene methylation microarray were downloaded for identification of differentially expressed genes and differentially methylated genes. Then, we used various biological information databases to annotate the functions of the differentially-methylated/expressed genes, and screen out key genes and important signaling pathways. Finally, we validate the differentially-methylated/expressed genes in the additional online datasets and in blood from AD patients.Results: A total of 8 hub hypomethylated-high expression genes were obtained, including Rac family small GTPase 2, FGR proto-oncogene, Src family tyrosine kinase, LYN proto-oncogene, Src family tyrosine kinase, protein kinase C delta, myosin IF, integrin subunit alpha 5, semaphorin 4D, and growth arrest specific protein 7. Some enriched signaling pathways of hypomethylated-high expression genes were identified, including regulation of actin cytoskeleton, chemokine signaling pathway, Fc gamma R-mediated phagocytosis, and axon guidance. Conclusion: Differentially-methylated/expressed genes are likely to be associated with AD.
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Affiliation(s)
- Haiyuan Qiu
- Internal Medicine Department, Ningbo Psychiatric Hospital, Ningbo, China
| | - Qiuyan Weng
- Neurolog Department, Affiliated Hospital of Medical School Ningbo University, Ningbo, China
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