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Abyadeh M, Gupta V, Paulo JA, Sheriff S, Shadfar S, Fitzhenry M, Amirkhani A, Gupta V, Salekdeh GH, Haynes PA, Graham SL, Mirzaei M. Apolipoprotein ε in Brain and Retinal Neurodegenerative Diseases. Aging Dis 2023; 14:1311-1330. [PMID: 37199411 PMCID: PMC10389820 DOI: 10.14336/ad.2023.0312-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Accepted: 03/12/2023] [Indexed: 05/19/2023] Open
Abstract
Alzheimer's disease (AD) is the most common form of dementia that remains incurable and has become a major medical, social, and economic challenge worldwide. AD is characterized by pathological hallmarks of senile plaques (SP) and neurofibrillary tangles (NFTs) that damage the brain up to twenty years before a clinical diagnosis is made. Interestingly these pathological features have also been observed in retinal neurodegenerative diseases including age related macular degeneration (ARMD), glaucoma and diabetic retinopathy (DR). An association of AD with these diseases has been suggested in epidemiological studies and several common pathological events and risk factors have been identified between these diseases. The E4 allele of Apolipoprotein E (APOE) is a well-established genetic risk factor for late onset AD. The ApoE ε4 allele is also associated with retinal neurodegenerative diseases however in contrast to AD, it is considered protective in AMD, likewise ApoE E2 allele, which is a protective factor for AD, has been implicated as a risk factor for AMD and glaucoma. This review summarizes the evidence on the effects of ApoE in retinal neurodegenerative diseases and discusses the overlapping molecular pathways in AD. The involvement of ApoE in regulating amyloid beta (Aβ) and tau pathology, inflammation, vascular integrity, glucose metabolism and vascular endothelial growth factor (VEGF) signaling is also discussed.
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Affiliation(s)
| | - Vivek Gupta
- Department of Clinical Medicine, Faculty of Medicine, Health and Human Sciences, Macquarie Medical School, Macquarie University, Macquarie Park, North Ryde, Sydney, NSW 2109, Australia.
| | - Joao A Paulo
- Department of Cell Biology, Harvard Medical School, Boston, MA 02115, USA.
| | - Samran Sheriff
- Department of Clinical Medicine, Faculty of Medicine, Health and Human Sciences, Macquarie Medical School, Macquarie University, Macquarie Park, North Ryde, Sydney, NSW 2109, Australia.
| | - Sina Shadfar
- Department of Clinical Medicine, Faculty of Medicine, Health and Human Sciences, Macquarie Medical School, Macquarie University, Macquarie Park, North Ryde, Sydney, NSW 2109, Australia.
| | - Matthew Fitzhenry
- Australian Proteome Analysis Facility, Macquarie University, Macquarie Park, NSW 2113, Australia.
| | - Ardeshir Amirkhani
- Australian Proteome Analysis Facility, Macquarie University, Macquarie Park, NSW 2113, Australia.
| | - Veer Gupta
- School of Medicine, Deakin University, VIC, Australia.
| | - Ghasem H Salekdeh
- School of Natural Sciences, Macquarie University, Macquarie Park, NSW 2109, Australia.
| | - Paul A Haynes
- School of Natural Sciences, Macquarie University, Macquarie Park, NSW 2109, Australia.
| | - Stuart L Graham
- Department of Clinical Medicine, Faculty of Medicine, Health and Human Sciences, Macquarie Medical School, Macquarie University, Macquarie Park, North Ryde, Sydney, NSW 2109, Australia.
| | - Mehdi Mirzaei
- Department of Clinical Medicine, Faculty of Medicine, Health and Human Sciences, Macquarie Medical School, Macquarie University, Macquarie Park, North Ryde, Sydney, NSW 2109, Australia.
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Vallés AS, Barrantes FJ. The synaptic lipidome in health and disease. Biochim Biophys Acta Biomembr 2022; 1864:184033. [PMID: 35964712 DOI: 10.1016/j.bbamem.2022.184033] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Revised: 08/02/2022] [Accepted: 08/08/2022] [Indexed: 06/15/2023]
Abstract
Adequate homeostasis of lipid, protein and carbohydrate metabolism is essential for cells to perform highly specific tasks in our organism, and the brain, with its uniquely high energetic requirements, posesses singular characteristics. Some of these are related to its extraordinary dotation of synapses, the specialized subcelluar structures where signal transmission between neurons occurs in the central nervous system. The post-synaptic compartment of excitatory synapses, the dendritic spine, harbors key molecules involved in neurotransmission tightly packed within a minute volume of a few femtoliters. The spine is further compartmentalized into nanodomains that facilitate the execution of temporo-spatially separate functions in the synapse. Lipids play important roles in this structural and functional compartmentalization and in mechanisms that impact on synaptic transmission. This review analyzes the structural and dynamic processes involving lipids at the synapse, highlighting the importance of their homeostatic balance for the physiology of this complex and highly specialized structure, and underscoring the pathologies associated with disbalances of lipid metabolism, particularly in the perinatal and late adulthood periods of life. Although small variations of the lipid profile in the brain take place throughout the adult lifespan, the pathophysiological consequences are clinically manifested mostly during late adulthood. Disturbances in lipid homeostasis in the perinatal period leads to alterations during nervous system development, while in late adulthood they favor the occurrence of neurodegenerative diseases.
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Affiliation(s)
- Ana Sofia Vallés
- Instituto de Investigaciones Bioquímicas de Bahía Blanca (UNS-CONICET), 8000 Bahía Blanca, Argentina.
| | - Francisco J Barrantes
- Laboratory of Molecular Neurobiology, Institute of Biomedical Research (BIOMED), UCA-CONICET, Av. Alicia Moreau de Justo 1600, Buenos Aires C1107AAZ, Argentina.
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Sepiani A, Cheraghzadeh M, Nazeri Z, Azizidoost S, Shalbafan B, Kheirollah A. Correlation of R219K polymorphism of ABCA1 gene and the risk of Alzheimer's disease in the southwest of Iran. Meta Gene 2021. [DOI: 10.1016/j.mgene.2021.100961] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Jacobo-Albavera L, Domínguez-Pérez M, Medina-Leyte DJ, González-Garrido A, Villarreal-Molina T. The Role of the ATP-Binding Cassette A1 (ABCA1) in Human Disease. Int J Mol Sci 2021; 22:ijms22041593. [PMID: 33562440 PMCID: PMC7915494 DOI: 10.3390/ijms22041593] [Citation(s) in RCA: 68] [Impact Index Per Article: 22.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Revised: 01/25/2021] [Accepted: 01/27/2021] [Indexed: 02/06/2023] Open
Abstract
Cholesterol homeostasis is essential in normal physiology of all cells. One of several proteins involved in cholesterol homeostasis is the ATP-binding cassette transporter A1 (ABCA1), a transmembrane protein widely expressed in many tissues. One of its main functions is the efflux of intracellular free cholesterol and phospholipids across the plasma membrane to combine with apolipoproteins, mainly apolipoprotein A-I (Apo A-I), forming nascent high-density lipoprotein-cholesterol (HDL-C) particles, the first step of reverse cholesterol transport (RCT). In addition, ABCA1 regulates cholesterol and phospholipid content in the plasma membrane affecting lipid rafts, microparticle (MP) formation and cell signaling. Thus, it is not surprising that impaired ABCA1 function and altered cholesterol homeostasis may affect many different organs and is involved in the pathophysiology of a broad array of diseases. This review describes evidence obtained from animal models, human studies and genetic variation explaining how ABCA1 is involved in dyslipidemia, coronary heart disease (CHD), type 2 diabetes (T2D), thrombosis, neurological disorders, age-related macular degeneration (AMD), glaucoma, viral infections and in cancer progression.
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Affiliation(s)
- Leonor Jacobo-Albavera
- Laboratorio de Genómica de Enfermedades Cardiovasculares, Dirección de Investigación, Instituto Nacional de Medicina Genómica (INMEGEN), Mexico City CP14610, Mexico; (L.J.-A.); (M.D.-P.); (D.J.M.-L.); (A.G.-G.)
| | - Mayra Domínguez-Pérez
- Laboratorio de Genómica de Enfermedades Cardiovasculares, Dirección de Investigación, Instituto Nacional de Medicina Genómica (INMEGEN), Mexico City CP14610, Mexico; (L.J.-A.); (M.D.-P.); (D.J.M.-L.); (A.G.-G.)
| | - Diana Jhoseline Medina-Leyte
- Laboratorio de Genómica de Enfermedades Cardiovasculares, Dirección de Investigación, Instituto Nacional de Medicina Genómica (INMEGEN), Mexico City CP14610, Mexico; (L.J.-A.); (M.D.-P.); (D.J.M.-L.); (A.G.-G.)
- Posgrado en Ciencias Biológicas, Universidad Nacional Autónoma de México (UNAM), Coyoacán, Mexico City CP04510, Mexico
| | - Antonia González-Garrido
- Laboratorio de Genómica de Enfermedades Cardiovasculares, Dirección de Investigación, Instituto Nacional de Medicina Genómica (INMEGEN), Mexico City CP14610, Mexico; (L.J.-A.); (M.D.-P.); (D.J.M.-L.); (A.G.-G.)
| | - Teresa Villarreal-Molina
- Laboratorio de Genómica de Enfermedades Cardiovasculares, Dirección de Investigación, Instituto Nacional de Medicina Genómica (INMEGEN), Mexico City CP14610, Mexico; (L.J.-A.); (M.D.-P.); (D.J.M.-L.); (A.G.-G.)
- Correspondence:
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Teresa JC, Fernado C, Nancy MR, Gilberto VA, Alberto CR, Roberto RR. Association of genetic variants of ABCA1 with susceptibility to dementia: (SADEM study). Metab Brain Dis 2020; 35:915-922. [PMID: 32447570 DOI: 10.1007/s11011-020-00577-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Accepted: 04/29/2020] [Indexed: 10/24/2022]
Abstract
Because of the importance of cholesterol metabolism in the physiopathogenesis of dementia, and knowing the function of ATP-binding cassette A1 transporter (ABCA1) as a cholesterol flow pump at the cellular and cerebral level, it has been noted that the ABCA1 gene may be a good candidate for disease study. In order to evaluate the relationship between ABCA1 genetic variants and the risk of Alzheimer's disease and other dementia in Mexican individuals, we examined three ABCA1 polymorphisms located in the exonic region (rs2230808, rs2066718, rs2230806) and two in the promoter region (rs1800977, rs2422493) in a group of 557 normal controls and 221 cases of dementia. It was possible to distinguish one protective haplotype: CCCCGC (OR = 0,502, 95% CI = 0,370-0,681, p < 0.001), and one risk haplotype TCCCAT (OR = 2208, 95% CI = 1609-3031, p < 0.000) for the development of dementia. The results suggest that ABCA1 plays an important role in the pathophysiological mechanisms for the development of dementia.
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Affiliation(s)
- Juárez-Cedillo Teresa
- Unidad de Investigación Epidemiológica y en Servicios de Salud, Área Envejecimiento. Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social (Actualmente comisionada en la Unidad de Investigación en Epidemiológica Clínica, Hospital General Regional Núm. 1 Dr. Carlos Mac Gregor Sánchez Navarro, Gabriel Mancera 222 esq. Xola. Colonia Del Valle. Delegación. Benito Juárez, IMSS), Mexico City, Mexico.
| | - Calzada Fernado
- Unidad de invetigación Médica en Farmacología UMAE, Hospital de Especialidades Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Mexico City, Mexico
| | - Martínez-Rodríguez Nancy
- Community Health Research. Department, Hospital Infantil de Mexico Federico Gomez, Ministry of Health (SSA), Mexico City, Mexico
| | - Vargas-Alarcón Gilberto
- Department of Molecular Biology, Instituto Nacional de Cardiología Ignacio Chávez, Mexico City, Mexico
| | - Cruz-Rocha Alberto
- Laboratorio de Urgencias del Hospital de Pediatría. Centro Medico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Mexico City, Mexico
| | - Robles-Ramirez Roberto
- Laboratorio de Urgencias del Hospital de Pediatría. Centro Medico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Mexico City, Mexico
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Abstract
Lipids constitute the bulk of the dry mass of the brain and have been associated with healthy function as well as the most common pathological conditions of the brain. Demographic factors, genetics, and lifestyles are the major factors that influence lipid metabolism and are also the key components of lipid disruption in Alzheimer's disease (AD). Additionally, the most common genetic risk factor of AD, APOE ϵ4 genotype, is involved in lipid transport and metabolism. We propose that lipids are at the center of Alzheimer's disease pathology based on their involvement in the blood-brain barrier function, amyloid precursor protein (APP) processing, myelination, membrane remodeling, receptor signaling, inflammation, oxidation, and energy balance. Under healthy conditions, lipid homeostasis bestows a balanced cellular environment that enables the proper functioning of brain cells. However, under pathological conditions, dyshomeostasis of brain lipid composition can result in disturbed BBB, abnormal processing of APP, dysfunction in endocytosis/exocytosis/autophagocytosis, altered myelination, disturbed signaling, unbalanced energy metabolism, and enhanced inflammation. These lipid disturbances may contribute to abnormalities in brain function that are the hallmark of AD. The wide variance of lipid disturbances associated with brain function suggest that AD pathology may present as a complex interaction between several metabolic pathways that are augmented by risk factors such as age, genetics, and lifestyles. Herewith, we examine factors that influence brain lipid composition, review the association of lipids with all known facets of AD pathology, and offer pointers for potential therapies that target lipid pathways.
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Affiliation(s)
- Hannah Chew
- Huntington Medical Research Institutes, Pasadena, CA, United States
- University of California, Los Angeles, Los Angeles, CA, United States
| | | | - Alfred N. Fonteh
- Huntington Medical Research Institutes, Pasadena, CA, United States
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Li HY, Tsai MS, Huang CG, Wang RYL, Chuang LP, Chen NH, Liu CH, Hsu CM, Cheng WN, Lee LA. Alterations in Alzheimer's Disease-Associated Gene Expression in Severe Obstructive Sleep Apnea Patients. J Clin Med 2019; 8:jcm8091361. [PMID: 31480626 PMCID: PMC6780075 DOI: 10.3390/jcm8091361] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2019] [Revised: 08/24/2019] [Accepted: 08/28/2019] [Indexed: 01/18/2023] Open
Abstract
Background: Obstructive sleep apnea (OSA) increases the risk of Alzheimer’s disease (AD), and inflammation may be involved in the early pathogenesis of AD in patients with OSA. However, the potential pathways between OSA and AD have yet to be established. In this study, we aimed to investigate differential expressions of AD-associated genes in OSA patients without evident AD or dementia. Methods: This prospective case-control study included five patients with severe OSA and five age and sex-matched patients with non-severe OSA without evident dementia who underwent uvulopalatopharyngoplasty between 1 January 2013 and 31 December 2015. The expressions of genes associated with AD were analyzed using whole-exome sequencing. Unsupervised two-dimensional hierarchical clustering was performed on these genes. Pearson’s correlation was used as the distance metric to simultaneously cluster subjects and genes. Results: The expressions of CCL2, IL6, CXCL8, HLA-A, and IL1RN in the patients with severe OSA were significantly different from those in the patients with non-severe OSA and contributed to changes in the immune response, cytokine–cytokine receptor interactions, and nucleotide-binding oligomerization domain-like receptor signaling pathways. Conclusions: Inflammation may contribute to the onset of AD and physicians need to be aware of the potential occurrence of AD in patients with severe OSA.
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Affiliation(s)
- Hsueh-Yu Li
- Department of Otolaryngology-Head and Neck Surgery, Linkou Chang Gung Memorial Hospital, Taoyuan 333, Taiwan
- Faculty of Medicine, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan
| | - Ming-Shao Tsai
- Faculty of Medicine, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan
- Department of Otolaryngology-Head and Neck Surgery, Chiayi Chang Gung Memorial Hospital, Chiayi 613, Taiwan
- Graduate Institute of Clinical Medical Sciences, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan
- Health Information and Epidemiology Laboratory, Chiayi, Chang Gung Memorial Hospital, Chiayi 613, Taiwan
| | - Chung-Guei Huang
- Department of Laboratory Medicine, Linkou Chang Gung Memorial Hospital, Taoyuan 333, Taiwan.
- Research Center for Emerging Viral Infections, Chang Gung University, Taoyuan 333, Taiwan.
- Graduate Institute of Biomedical Sciences, Department of Medical Biotechnology and Laboratory Science, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan.
| | - Robert Y L Wang
- Research Center for Emerging Viral Infections, Chang Gung University, Taoyuan 333, Taiwan
| | - Li-Pang Chuang
- Faculty of Medicine, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan
- Graduate Institute of Clinical Medical Sciences, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan
- Department of Pulmonary and Critical Care Medicine, Taoyuan Chang Gung Memorial Hospital, Taoyuan 333, Taiwan
| | - Ning-Hung Chen
- Faculty of Medicine, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan
- Department of Pulmonary and Critical Care Medicine, Taoyuan Chang Gung Memorial Hospital, Taoyuan 333, Taiwan
| | - Chi-Hung Liu
- Faculty of Medicine, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan
- Graduate Institute of Clinical Medical Sciences, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan
- Stroke Center and Department of Neurology, Linkou Chang Gung Memorial Hospital, Taoyuan 333, Taiwan
| | - Cheng-Ming Hsu
- Department of Otolaryngology-Head and Neck Surgery, Chiayi Chang Gung Memorial Hospital, Chiayi 613, Taiwan
- School of Traditional Chinese Medicine, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan
| | - Wen-Nuan Cheng
- Department of Sports Sciences, University of Taipei, Taipei 111, Taiwan
| | - Li-Ang Lee
- Department of Otolaryngology-Head and Neck Surgery, Linkou Chang Gung Memorial Hospital, Taoyuan 333, Taiwan.
- Faculty of Medicine, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan.
- Graduate Institute of Clinical Medical Sciences, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan.
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Stepler KE, Robinson RAS. The Potential of ‘Omics to Link Lipid Metabolism and Genetic and Comorbidity Risk Factors of Alzheimer’s Disease in African Americans. Advances in Experimental Medicine and Biology 2019; 1118:1-28. [DOI: 10.1007/978-3-030-05542-4_1] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Lu J, Fu J, Zhong Y, Yang Q, Huang J, Li J, Huo Y, Zhao Y, Wan L, Guo C. Association between ABCA1 gene polymorphisms and the therapeutic response to donepezil therapy in Han Chinese patients with Alzheimer’s disease. Brain Res Bull 2018; 140:1-4. [DOI: 10.1016/j.brainresbull.2018.03.014] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Revised: 03/13/2018] [Accepted: 03/23/2018] [Indexed: 11/24/2022]
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Malamon JS, Kriete A. Integrated Systems Approach Reveals Sphingolipid Metabolism Pathway Dysregulation in Association with Late-Onset Alzheimer's Disease. Biology (Basel) 2018; 7:biology7010016. [PMID: 29425116 PMCID: PMC5872042 DOI: 10.3390/biology7010016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Revised: 01/22/2018] [Accepted: 02/06/2018] [Indexed: 01/21/2023]
Abstract
Late-onset Alzheimer’s disease (LOAD) and age are significantly correlated such that one-third of Americans beyond 85 years of age are afflicted. We have designed and implemented a pilot study that combines systems biology approaches with traditional next-generation sequencing (NGS) analysis techniques to identify relevant regulatory pathways, infer functional relationships and confirm the dysregulation of these biological pathways in LOAD. Our study design is a most comprehensive systems approach combining co-expression network modeling derived from RNA-seq data, rigorous quality control (QC) standards, functional ontology, and expression quantitative trait loci (eQTL) derived from whole exome (WES) single nucleotide variant (SNV) genotype data. Our initial results reveal several statistically significant, biologically relevant genes involved in sphingolipid metabolism. To validate these findings, we performed a gene set enrichment analysis (GSEA). The GSEA revealed the sphingolipid metabolism pathway and regulation of autophagy in association with LOAD cases. In the execution of this study, we have successfully tested an integrative approach to identify both novel and known LOAD drivers in order to develop a broader and more detailed picture of the highly complex transcriptional and regulatory landscape of age-related dementia.
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Affiliation(s)
- John Stephen Malamon
- Bossone Research Center, School of Biomedical Engineering, Science and Health Systems, Drexel University, 3141 Chestnut Street, Philadelphia, PA 19104, USA.
| | - Andres Kriete
- Bossone Research Center, School of Biomedical Engineering, Science and Health Systems, Drexel University, 3141 Chestnut Street, Philadelphia, PA 19104, USA.
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Fehér Á, Giricz Z, Juhász A, Pákáski M, Janka Z, Kálmán J. ABCA1 rs2230805 and rs2230806 common gene variants are associated with Alzheimer’s disease. Neurosci Lett 2018; 664:79-83. [DOI: 10.1016/j.neulet.2017.11.027] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2017] [Revised: 11/01/2017] [Accepted: 11/09/2017] [Indexed: 11/25/2022]
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Nordestgaard LT, Tybjærg-Hansen A, Nordestgaard BG, Frikke-Schmidt R. Loss-of-function mutation in ABCA1 and risk of Alzheimer's disease and cerebrovascular disease. Alzheimers Dement 2015; 11:1430-1438. [PMID: 26079414 DOI: 10.1016/j.jalz.2015.04.006] [Citation(s) in RCA: 91] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2015] [Revised: 03/23/2015] [Accepted: 04/16/2015] [Indexed: 01/01/2023]
Abstract
INTRODUCTION The adenosine triphosphate-binding cassette transporter A1 (ABCA1) is a major cholesterol transporter highly expressed in the liver and brain. In the brain, ABCA1 lipidates apolipoprotein E (apoE), facilitates clearance of amyloid-β, and may be involved in maintenance of the blood-brain barrier via apoE-mediated pathways. METHODS We tested whether a loss-of-function mutation in ABCA1, N1800H, is associated with plasma levels of apoE and with risk of Alzheimer's disease (AD) in 92,726 individuals and with risk of cerebrovascular disease in 64,181 individuals. RESULTS N1800H AC (0.2%) versus AA (99.8%) was associated with a 13% lower plasma level of apoE (P = 1 × 10(-11)). Multifactorially adjusted hazard ratios for N1800H AC versus AA were 4.13 (95% confidence interval, 1.32-12.9) for AD, 2.46 (1.10-5.50) for cerebrovascular disease, and 8.28 (2.03-33.7) for the hemorrhagic stroke subtype. DISCUSSION A loss-of-function mutation in ABCA1, present in 1:500 individuals, was associated with low plasma levels of apoE and with high risk of AD and cerebrovascular disease in the general population.
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Affiliation(s)
- Liv Tybjærg Nordestgaard
- Department of Clinical Biochemistry, Rigshospitalet, Copenhagen University Hospitals, Copenhagen, Denmark
| | - Anne Tybjærg-Hansen
- Department of Clinical Biochemistry, Rigshospitalet, Copenhagen University Hospitals, Copenhagen, Denmark; The Copenhagen General Population Study, Herlev Hospital, Copenhagen University Hospitals, Herlev, Denmark; Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Børge G Nordestgaard
- The Copenhagen General Population Study, Herlev Hospital, Copenhagen University Hospitals, Herlev, Denmark; Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark; Department of Clinical Biochemistry, Herlev Hospital, Copenhagen University Hospitals, Herlev, Denmark
| | - Ruth Frikke-Schmidt
- Department of Clinical Biochemistry, Rigshospitalet, Copenhagen University Hospitals, Copenhagen, Denmark; The Copenhagen General Population Study, Herlev Hospital, Copenhagen University Hospitals, Herlev, Denmark; Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.
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Koldamova R, Fitz NF, Lefterov I. ATP-binding cassette transporter A1: from metabolism to neurodegeneration. Neurobiol Dis 2014; 72 Pt A:13-21. [PMID: 24844148 PMCID: PMC4302328 DOI: 10.1016/j.nbd.2014.05.007] [Citation(s) in RCA: 85] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2014] [Revised: 05/01/2014] [Accepted: 05/06/2014] [Indexed: 01/04/2023] Open
Abstract
ATP-binding cassette transporter A1 (ABCA1) mediates cholesterol efflux to lipid-free apolipoprotein A-I (apoA-I) and apolipoprotein E (apoE). ABCA1 is an essential regulator of high density lipoproteins (HDL) and reverse cholesterol transport - a role that determines its importance for atherosclerosis. Over the last 10 years studies have provided convincing evidence that ABCA1, via its control of apoE lipidation, also has a role in Alzheimer's disease (AD). A series of reports have revealed a significant impact of ABCA1 on Aβ deposition and clearance in AD model mice, as well as an association of common and rare ABCA1 gene variants with the risk for AD. Since APOE is the major genetic risk factor for late onset AD, the regulation of apoE level or its functionality by ABCA1 may prove significant for AD pathogenesis. ABCA1 is transcriptionally regulated by Liver X Receptors (LXR) and Retinoic X Receptors (RXR) which provides a starting point for drug discovery and development of synthetic LXR and RXR agonists for treatment of metabolic and neurodegenerative disorders. This review summarizes the recent results of research on ABCA1, particularly relevant to atherosclerosis and AD.
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Affiliation(s)
- Radosveta Koldamova
- Department of Environmental and Occupational Health, University of Pittsburgh, Pittsburgh, PA 15219, USA.
| | - Nicholas F Fitz
- Department of Environmental and Occupational Health, University of Pittsburgh, Pittsburgh, PA 15219, USA
| | - Iliya Lefterov
- Department of Environmental and Occupational Health, University of Pittsburgh, Pittsburgh, PA 15219, USA.
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Marín-Martín FR, Soler-Rivas C, Martín-Hernández R, Rodriguez-Casado A. A Comprehensive In Silico Analysis of the Functional and Structural Impact of Nonsynonymous SNPs in the ABCA1 Transporter Gene. Cholesterol 2014; 2014:639751. [PMID: 25215231 DOI: 10.1155/2014/639751] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/30/2014] [Revised: 07/07/2014] [Accepted: 07/24/2014] [Indexed: 12/24/2022]
Abstract
Disease phenotypes and defects in function can be traced to nonsynonymous single nucleotide polymorphisms (nsSNPs), which are important indicators of action sites and effective potential therapeutic approaches. Identification of deleterious nsSNPs is crucial to characterize the genetic basis of diseases, assess individual susceptibility to disease, determinate molecular and therapeutic targets, and predict clinical phenotypes. In this study using PolyPhen2 and MutPred in silico algorithms, we analyzed the genetic variations that can alter the expression and function of the ABCA1 gene that causes the allelic disorders familial hypoalphalipoproteinemia and Tangier disease. Predictions were validated with published results from in vitro, in vivo, and human studies. Out of a total of 233 nsSNPs, 80 (34.33%) were found deleterious by both methods. Among these 80 deleterious nsSNPs found, 29 (12.44%) rare variants resulted highly deleterious with a probability >0.8. We have observed that mostly variants with verified functional effect in experimental studies are correctly predicted as damage variants by MutPred and PolyPhen2 tools. Still, the controversial results of experimental approaches correspond to nsSNPs predicted as neutral by both methods, or contradictory predictions are obtained for them. A total of seventeen nsSNPs were predicted as deleterious by PolyPhen2, which resulted neutral by MutPred. Otherwise, forty two nsSNPs were predicted as deleterious by MutPred, which resulted neutral by PolyPhen2.
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Abstract
The role of cholesterol in the etiology of Alzheimer's disease (AD) is still controversial. Some studies exploring the association between lipids and/or lipid lowering treatment and AD indicate a harmful effect of dyslipidemia and a beneficial effect of statin therapy on AD risk. The findings are supported by genetic linkage and association studies that have clearly identified several genes involved in cholesterol metabolism or transport as AD susceptibility genes, including apolipoprotein E, apolipoprotein J, and the sortilin-related receptor. Functional cell biology studies support a critical involvement of lipid raft cholesterol in the modulation of amyloid-β protein precursor (AβPP) processing by β- and γ-secretase resulting in altered amyloid-β production. Contradictory evidence comes from epidemiological studies showing no or controversial association between dyslipidemia and AD risk. Additionally, cell biology studies suggest that there is little exchange between circulating and brain cholesterol, that increased membrane cholesterol is protective by inhibiting loss of membrane integrity through amyloid cytotoxicity, and that cellular cholesterol inhibits co-localization of BACE1 and AβPP in non-raft membrane domains, thereby increasing generation of plasmin, an amyloid-β-degrading enzyme. The aim of this review is to summarize the findings of epidemiological and cell biological studies to elucidate the role of cholesterol in AD etiology.
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Affiliation(s)
- Christiane Reitz
- The Gertrude H. Sergievsky Center, The Taub Institute for Research on Alzheimer's Disease and The Aging Brain New York, NY, USA.
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Alonso Vilatela ME, López-López M, Yescas-Gómez P. Genetics of Alzheimer’s disease. Arch Med Res. 2012;43:622-631. [PMID: 23142261 DOI: 10.1016/j.arcmed.2012.10.017] [Citation(s) in RCA: 78] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2012] [Accepted: 10/22/2012] [Indexed: 12/14/2022]
Abstract
Alzheimer's disease (AD) is the most frequent cause of dementia in the elderly and represents an important and increasing clinical challenge in terms of diagnosis and treatment. This review highlights the role of genetics in understanding the pieces of the complex AD puzzle and summarizes the genes known to be involved in Alzheimer's disease. The amount of risk of Alzheimer's disease that is attributable to genetics is estimated to be ∼70%. Mutations in the genes encoding amyloid precursor protein (APP), presenilin 1 (PSEN1) and presenilin 2 (PSEN2) are responsible for early-onset autosomal dominant AD. Although mutations in these genes account for ∼1% of AD cases, their identification has been crucial to understand the molecular mechanisms of AD. For the more common complex late-onset AD, the ɛ-4 allele of the gene encoding apolipoprotein E (APOE) has been recognized as a major genetic risk factor. More recently, several potential disease risk genes have been identified with the use of advanced genomic methods like genome-wide association studies (GWAS). In the end, the knowledge of the pathophysiological mechanisms leading to AD will enable the development of more accurate diagnostic tests and new disease-treating strategies.
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Malik B, Fernandes C, Killick R, Wroe R, Usardi A, Williamson R, Kellie S, Anderton BH, Reynolds CH. Oligomeric amyloid-β peptide affects the expression of genes involved in steroid and lipid metabolism in primary neurons. Neurochem Int 2012; 61:321-33. [PMID: 22579571 DOI: 10.1016/j.neuint.2012.05.006] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2012] [Revised: 04/10/2012] [Accepted: 05/01/2012] [Indexed: 01/28/2023]
Abstract
Amyloid-β peptide (Aβ) is the principal component of plaques in the brains of patients with Alzheimer's disease (AD), and the most toxic form of Aβ may be as soluble oligomers. We report here the results of a microarray study of gene expression profiles in primary mouse cortical neurons in response to oligomeric Aβ(1-42). A major and unexpected finding was the down-regulation of genes involved in the biosynthesis of cholesterol and other steroids and lipids (such as Fdft1, Fdps, Idi1, Ldr, Mvd, Mvk, Nsdhl, Sc4mol), the expression of which was verified by quantitative real-time RT-PCR (qPCR). The ATP-binding cassette gene Abca1, which has a major role in cholesterol transport in brain and other tissues and has been genetically linked to AD, was notably up-regulated. The possible involvement of cholesterol and other lipids in Aβ synthesis and action in Alzheimer's disease has been studied and debated extensively but remains unresolved. These new data suggest that Aβ may influence steroid and lipid metabolism in neurons via multiple gene-expression changes.
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Piehler AP, Ozcürümez M, Kaminski WE. A-Subclass ATP-Binding Cassette Proteins in Brain Lipid Homeostasis and Neurodegeneration. Front Psychiatry 2012; 3:17. [PMID: 22403555 PMCID: PMC3293240 DOI: 10.3389/fpsyt.2012.00017] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/29/2011] [Accepted: 02/19/2012] [Indexed: 12/24/2022] Open
Abstract
The A-subclass of ATP-binding cassette (ABC) transporters comprises 12 structurally related members of the evolutionarily highly conserved superfamily of ABC transporters. ABCA transporters represent a subgroup of "full-size" multispan transporters of which several members have been shown to mediate the transport of a variety of physiologic lipid compounds across membrane barriers. The importance of ABCA transporters in human disease is documented by the observations that so far four members of this protein family (ABCA1, ABCA3, ABCA4, ABCA12) have been causatively linked to monogenetic disorders including familial high-density lipoprotein deficiency, neonatal surfactant deficiency, degenerative retinopathies, and congenital keratinization disorders. Recent research also point to a significant contribution of several A-subfamily ABC transporters to neurodegenerative diseases, in particular Alzheimer's disease (AD). This review will give a summary of our current knowledge of the A-subclass of ABC transporters with a special focus on brain lipid homeostasis and their involvement in AD.
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Abstract
Alzheimer's disease (AD) is considered the "disease of the twenty-first century." With a 10-fold increase in global incidence over the past 100 years, AD is now reaching epidemic proportions and by all projections, AD patient numbers will continue to rise. Despite intense research efforts, AD remains a mystery and effective therapies are still unavailable. This represents an unmet need resulting in clinical, social, and economic problems. Over the last decade, a new AD research focus has emerged: ATP-binding cassette (ABC) transporters. In this article, we provide an overview of the ABC transporters ABCA1, ABCA2, P-glycoprotein (ABCB1), MRP1 (ABCC1), and BCRP (ABCG2), all of which are expressed in the brain and have been implicated in AD. We summarize recent findings on the role of these five transporters in AD, and discuss their potential to serve as therapeutic targets.
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Affiliation(s)
- Andrea Wolf
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Minnesota Duluth, MN, USA
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Mathew A, Yoshida Y, Maekawa T, Sakthi Kumar D. Alzheimer's disease: Cholesterol a menace? Brain Res Bull 2011; 86:1-12. [DOI: 10.1016/j.brainresbull.2011.06.006] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2010] [Revised: 06/17/2011] [Accepted: 06/19/2011] [Indexed: 12/20/2022]
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Khorram Khorshid HR, Gozalpour E, Kamali K, Ohadi M, Karimloo M, Shahhosseiny MH. The Association between Sporadic Alzheimer's Disease and the Human ABCA1 and APOE Gene Polymorphisms in Iranian Population. Iran Red Crescent Med J 2011; 13:256-62. [PMID: 22737475 PMCID: PMC3371965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Subscribe] [Scholar Register] [Received: 06/01/2010] [Revised: 09/10/2010] [Accepted: 11/01/2010] [Indexed: 12/02/2022]
Abstract
BACKGROUND Apolipoprotein E (APOE), which its ε4 allele has been reported as a risk factor in late onset Alzheimer's disease (AD), is the main cholesterol carrier in the brain. ATP-binding cassette transporter A1 (ABCA1) gene on chromosome 9, which has been known by genome-wide AD linkage study, has an important role in cellular cholesterol efflux. This study determines the association between sporadic AD and the human ABCA1 and APOE gene polymorphisms in Iranian population. METHODS 154 AD cases and 162 control subjects from Iranian population were genotyped for APOE genotypes and ABCA1 polymorphism (R219K). RESULTS The frequency of ε2ε3 genotype was higher in control subjects comparing AD patients but was not significant (13% versus 5.8%) and ε3ε4 genotype frequency was significantly higher in AD cases comparing with control subjects. APOE-ε2 allele frequency in cases was lower than control subjects but this difference was not significant (4.5% versus 8%). Individuals carrying ε4 allele, developed AD 6.5 times more than non-carriers (OR=6.52, 95%CI=2.63-16.17). There was no significant association between ABCA1 polymorphism and AD. CONCLUSION Unlike other studies, R219K polymorphism was not dependent on gender and APOE-ε4 allele and there was no association between APOE and ABCA1 in AD patients compared to controls.
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Affiliation(s)
- H R Khorram Khorshid
- Genetic Research Centre, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran,Correspondence: Hamid Reza Khorram Khorshid, MD,PhD Genetic Research Centre, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran. Tel.: +98-21-22180138, Fax: +98-21-22180138, E-mail:
| | - E Gozalpour
- Genetic Research Centre, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
| | - K Kamali
- Reproductive Biotechnology Research Centre, Avicenna Research Institute (ACECR), Tehran, Iran
| | - M Ohadi
- Genetic Research Centre, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
| | - M Karimloo
- Epidemiology and Biostatistics Department, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
| | - M H Shahhosseiny
- Microbiology Department, Islamic Azad University, Shahr-e-Qods Branch, Tehran, Iran
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Koldamova R, Fitz NF, Lefterov I. The role of ATP-binding cassette transporter A1 in Alzheimer's disease and neurodegeneration. Biochim Biophys Acta Mol Cell Biol Lipids 2010; 1801:824-30. [PMID: 20188211 DOI: 10.1016/j.bbalip.2010.02.010] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2010] [Revised: 02/12/2010] [Accepted: 02/15/2010] [Indexed: 01/03/2023]
Abstract
ATP-binding cassette transporter A1 - ABCA1, is the most extensively studied transporter in human pathology. ABCA1 became a primary subject of research in many academic and pharmaceutical laboratories immediately after the discovery that mutations at the gene locus cause severe familial High Density Lipoprotein (HDL) deficiency and, in the homozygous form - Tangier disease. The protein is the major regulator of intracellular cholesterol efflux which is the initial and essential step in the biogenesis and formation of nascent HDL particles. The transcriptional regulation of ABCA1 by nuclear Liver X Receptors (LXR) provided a starting point for drug discovery and development of synthetic LXR ligands/ABCA1 activators for treatment of arteriosclerosis. A series of reports that revealed the role of ABCA1 in Abeta deposition and clearance, as well as the possibility for association of some ABCA1 genetic variants with risk for Alzheimer's disease (AD) brought a new dimension to ABCA1 research. The LXR-ABCA1-APOE regulatory axis is now considered a promising therapeutic target in AD, which includes the only proven risk factor for AD - APOE, at two distinct levels - transcriptional regulation by LXR, and ABCA1 controlled lipidation which can influence Abeta aggregation and amyloid clearance. This review will summarize the results of research on ABCA1, particularly related to AD and neurodegeneration.
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Affiliation(s)
- Radosveta Koldamova
- Department of Environmental and Occupational Health, University of Pittsburgh, Pittsburgh, PA 15219, USA.
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Barrantes FJ, Borroni V, Vallés S. Neuronal nicotinic acetylcholine receptor-cholesterol crosstalk in Alzheimer's disease. FEBS Lett 2009; 584:1856-63. [PMID: 19914249 DOI: 10.1016/j.febslet.2009.11.036] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2009] [Revised: 11/09/2009] [Accepted: 11/10/2009] [Indexed: 10/20/2022]
Abstract
Alzheimer's disease (AD) is one of the most devastating diseases of the central nervous system (CNS). It is characterized by two neuropathological findings: amyloid plaques and neurofibrillary tangles. AD is also accompanied by an extensive functional deficit in the cholinergic system, involving the neuronal-type nicotinic acetylcholine receptor (AChR). Furthermore there is increasing evidence showing a misregulation of cholesterol metabolism in the development of the disease. Since cholesterol affects AChR protein at multiple levels, the cognitive impairment and other neurological correlates of AD might be partly associated with an abnormal crosstalk between the receptor protein and the sterol in this synaptopathy.
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Affiliation(s)
- Francisco J Barrantes
- Instituto de Investigaciones Bioquímicas de Bahía Blanca, UNESCO Chair of Biophysics and Molecular Neurobiology, Bahía Blanca, Argentina.
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Rodríguez-rodríguez E, Mateo I, Infante J, Llorca J, García-gorostiaga I, Vázquez-higuera JL, Sánchez-juan P, Berciano J, Combarros O. Interaction between HMGCR and ABCA1 cholesterol-related genes modulates Alzheimer's disease risk. Brain Res 2009; 1280:166-71. [DOI: 10.1016/j.brainres.2009.05.019] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2009] [Revised: 05/05/2009] [Accepted: 05/08/2009] [Indexed: 11/18/2022]
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25
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