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Forero-Rodríguez J, Zimmermann J, Taubenheim J, Arias-Rodríguez N, Caicedo-Narvaez JD, Best L, Mendieta CV, López-Castiblanco J, Gómez-Muñoz LA, Gonzalez-Santos J, Arboleda H, Fernandez W, Kaleta C, Pinzón A. Changes in Bacterial Gut Composition in Parkinson's Disease and Their Metabolic Contribution to Disease Development: A Gut Community Reconstruction Approach. Microorganisms 2024; 12:325. [PMID: 38399728 PMCID: PMC10893096 DOI: 10.3390/microorganisms12020325] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Revised: 01/08/2024] [Accepted: 01/10/2024] [Indexed: 02/25/2024] Open
Abstract
Parkinson's disease (PD) is a chronic and progressive neurodegenerative disease with the major symptoms comprising loss of movement coordination (motor dysfunction) and non-motor dysfunction, including gastrointestinal symptoms. Alterations in the gut microbiota composition have been reported in PD patients vs. controls. However, it is still unclear how these compositional changes contribute to disease etiology and progression. Furthermore, most of the available studies have focused on European, Asian, and North American cohorts, but the microbiomes of PD patients in Latin America have not been characterized. To address this problem, we obtained fecal samples from Colombian participants (n = 25 controls, n = 25 PD idiopathic cases) to characterize the taxonomical community changes during disease via 16S rRNA gene sequencing. An analysis of differential composition, diversity, and personalized computational modeling was carried out, given the fecal bacterial composition and diet of each participant. We found three metabolites that differed in dietary habits between PD patients and controls: carbohydrates, trans fatty acids, and potassium. We identified six genera that changed significantly in their relative abundance between PD patients and controls, belonging to the families Lachnospiraceae, Lactobacillaceae, Verrucomicrobioaceae, Peptostreptococcaceae, and Streptococcaceae. Furthermore, personalized metabolic modeling of the gut microbiome revealed changes in the predicted production of seven metabolites (Indole, tryptophan, fructose, phenylacetic acid, myristic acid, 3-Methyl-2-oxovaleric acid, and N-Acetylneuraminic acid). These metabolites are associated with the metabolism of aromatic amino acids and their consumption in the diet. Therefore, this research suggests that each individual's diet and intestinal composition could affect host metabolism. Furthermore, these findings open the door to the study of microbiome-host interactions and allow us to contribute to personalized medicine.
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Affiliation(s)
- Johanna Forero-Rodríguez
- Bioinformatics and Systems Biology Research Group, Genetic Institute, Universidad Nacional de Colombia, Bogotá 111321, Colombia; (J.F.-R.); (J.D.C.-N.); (J.L.-C.)
- Medical Systems Biology Research Group, Institute of Experimental Medicine, Christian-Albrechts-Universität zu Kiel, 24118 Kiel, Germany (J.T.)
| | - Johannes Zimmermann
- Medical Systems Biology Research Group, Institute of Experimental Medicine, Christian-Albrechts-Universität zu Kiel, 24118 Kiel, Germany (J.T.)
| | - Jan Taubenheim
- Medical Systems Biology Research Group, Institute of Experimental Medicine, Christian-Albrechts-Universität zu Kiel, 24118 Kiel, Germany (J.T.)
| | - Natalia Arias-Rodríguez
- Bioinformatics and Systems Biology Research Group, Genetic Institute, Universidad Nacional de Colombia, Bogotá 111321, Colombia; (J.F.-R.); (J.D.C.-N.); (J.L.-C.)
| | - Juan David Caicedo-Narvaez
- Bioinformatics and Systems Biology Research Group, Genetic Institute, Universidad Nacional de Colombia, Bogotá 111321, Colombia; (J.F.-R.); (J.D.C.-N.); (J.L.-C.)
- Neurosciences Research Group, Genetic Institute, Universidad Nacional de Colombia, Bogotá 111321, Colombia
| | - Lena Best
- Medical Systems Biology Research Group, Institute of Experimental Medicine, Christian-Albrechts-Universität zu Kiel, 24118 Kiel, Germany (J.T.)
| | - Cindy V. Mendieta
- PhD Program in Clinical Epidemiology, Department of Clinical Epidemiology and Biostatistics, Faculty of Medicine, Pontificia Universidad Javeriana, Bogotá 110231, Colombia;
- Department of Nutrition and Biochemistry, Pontificia Universidad Javeriana, Bogotá 110231, Colombia
| | - Julieth López-Castiblanco
- Bioinformatics and Systems Biology Research Group, Genetic Institute, Universidad Nacional de Colombia, Bogotá 111321, Colombia; (J.F.-R.); (J.D.C.-N.); (J.L.-C.)
| | - Laura Alejandra Gómez-Muñoz
- Neurosciences Research Group, Genetic Institute, Universidad Nacional de Colombia, Bogotá 111321, Colombia
- Cell Death Research Group, Medical School and Genetic Institute, Universidad Nacional de Colombia, Bogotá 111321, Colombia
| | - Janneth Gonzalez-Santos
- Structural Biochemistry and Bioinformatics Laboratory, Pontificia Universidad Javeriana, Bogotá 110231, Colombia
| | - Humberto Arboleda
- Cell Death Research Group, Medical School and Genetic Institute, Universidad Nacional de Colombia, Bogotá 111321, Colombia
| | - William Fernandez
- Neurosciences Research Group, Genetic Institute, Universidad Nacional de Colombia, Bogotá 111321, Colombia
- Cell Death Research Group, Medical School and Genetic Institute, Universidad Nacional de Colombia, Bogotá 111321, Colombia
| | - Christoph Kaleta
- Medical Systems Biology Research Group, Institute of Experimental Medicine, Christian-Albrechts-Universität zu Kiel, 24118 Kiel, Germany (J.T.)
| | - Andrés Pinzón
- Bioinformatics and Systems Biology Research Group, Genetic Institute, Universidad Nacional de Colombia, Bogotá 111321, Colombia; (J.F.-R.); (J.D.C.-N.); (J.L.-C.)
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Leal TP, Rao SC, French-Kwawu JN, Gouveia MH, Borda V, Bandres-Ciga S, Inca-Martinez M, Mason EA, Horimoto AR, Loesch DP, Sarihan EI, Cornejo-Olivas MR, Torres LE, Mazzetti-Soler PE, Cosentino C, Sarapura-Castro EH, Rivera-Valdivia A, Medina AC, Dieguez EM, Raggio VE, Lescano A, Tumas V, Borges V, Ferraz HB, Rieder CR, Schuh AS, Santos-Lobato BL, Velez-Pardo C, Jimenez-Del-Rio M, Lopera F, Moreno S, Chana-Cuevas P, Fernandez W, Arboleda G, Arboleda H, Bustos CEA, Yearout D, Lima-Costa MF, Tarazona-Santos E, Zabetian CP, Thornton TA, O’Connor TD, Mata IF. X-Chromosome Association Study in Latin American Cohorts Identifies New Loci in Parkinson's Disease. Mov Disord 2023; 38:1625-1635. [PMID: 37469269 PMCID: PMC10524402 DOI: 10.1002/mds.29508] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Revised: 05/15/2023] [Accepted: 05/25/2023] [Indexed: 07/21/2023] Open
Abstract
BACKGROUND Sex differences in Parkinson's disease (PD) risk are well-known. However, the role of sex chromosomes in the development and progression of PD is still unclear. OBJECTIVE The objective of this study was to perform the first X-chromosome-wide association study for PD risk in a Latin American cohort. METHODS We used data from three admixed cohorts: (1) Latin American Research consortium on the Genetics of Parkinson's Disease (n = 1504) as discover cohort, and (2) Latino cohort from International Parkinson Disease Genomics Consortium (n = 155) and (3) Bambui Aging cohort (n = 1442) as replication cohorts. We also developed an X-chromosome framework specifically designed for admixed populations. RESULTS We identified eight linkage disequilibrium regions associated with PD. We replicated one of these regions (top variant rs525496; discovery odds ratio [95% confidence interval]: 0.60 [0.478-0.77], P = 3.13 × 10-5 replication odds ratio: 0.60 [0.37-0.98], P = 0.04). rs5525496 is associated with multiple expression quantitative trait loci in brain and non-brain tissues, including RAB9B, H2BFM, TSMB15B, and GLRA4, but colocalization analysis suggests that rs5525496 may not mediate risk by expression of these genes. We also replicated a previous X-chromosome-wide association study finding (rs28602900), showing that this variant is associated with PD in non-European populations. CONCLUSIONS Our results reinforce the importance of including X-chromosome and diverse populations in genetic studies. © 2023 The Authors. Movement Disorders published by Wiley Periodicals LLC on behalf of International Parkinson and Movement Disorder Society.
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Affiliation(s)
- Thiago P. Leal
- Lerner Research Institute, Genomic Medicine, Cleveland Clinic, Cleveland, Ohio, USA
| | | | - Jennifer N. French-Kwawu
- Institute for Genome Sciences, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Mateus H. Gouveia
- Center for Research on Genomics and Global Health, National Human Genome Research Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Victor Borda
- Institute for Genome Sciences, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Sara Bandres-Ciga
- Center for Alzheimer’s and Related Dementias, National Institutes of Health, Bethesda, Maryland, USA
| | - Miguel Inca-Martinez
- Lerner Research Institute, Genomic Medicine, Cleveland Clinic, Cleveland, Ohio, USA
| | - Emily A. Mason
- University of South Carolina School of Medicine, Columbia, South Carolina, USA
| | | | - Douglas P. Loesch
- Institute for Genome Sciences, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Elif I. Sarihan
- Lerner Research Institute, Genomic Medicine, Cleveland Clinic, Cleveland, Ohio, USA
| | - Mario R. Cornejo-Olivas
- Neurogenetics Working Group, Universidad Científica del Sur, Lima, Peru
- Neurogenetics Research Center, Instituto Nacional de Ciencias Neurologicas, Lima, Peru
| | - Luis E. Torres
- Movement Disorders Unit, Instituto Nacional de Ciencias Neurologicas, Lima, Peru
| | - Pilar E. Mazzetti-Soler
- Neurogenetics Research Center, Instituto Nacional de Ciencias Neurologicas, Lima, Peru
- Departamento de Medicina Humana, Universidad Nacional Mayor de San Marcos, Lima, Peru
| | - Carlos Cosentino
- Movement Disorders Unit, Instituto Nacional de Ciencias Neurologicas, Lima, Peru
| | | | | | | | - Elena M. Dieguez
- Neurology Institute, Universidad de la República, Montevideo, Uruguay
| | - Víctor E. Raggio
- Department of Genetics, Facultad de Medicina, Universidad de la República, Montevideo, Uruguay
| | - Andrés Lescano
- Neurology Institute, Universidad de la República, Montevideo, Uruguay
| | - Vitor Tumas
- Ribeirão Preto Medical School, Universidade de São Paulo, Ribeirão Preto, Brazil
| | - Vanderci Borges
- Movement Disorders Unit, Department of Neurology and Neurosurgery, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Henrique B. Ferraz
- Movement Disorders Unit, Department of Neurology and Neurosurgery, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Carlos R. Rieder
- Departamento de Neurologia, Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, Brazil
| | - Artur Schumacher Schuh
- Serviço de Neurologia, Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil
- Departamento de Farmacologia, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | | | - Carlos Velez-Pardo
- Neuroscience Research Group, Medical Research Institute, Faculty of Medicine, Universidad de Antioquia, Medellín, Colombia
| | - Marlene Jimenez-Del-Rio
- Neuroscience Research Group, Medical Research Institute, Faculty of Medicine, Universidad de Antioquia, Medellín, Colombia
| | - Francisco Lopera
- Neuroscience Research Group, Medical Research Institute, Faculty of Medicine, Universidad de Antioquia, Medellín, Colombia
| | - Sonia Moreno
- Neuroscience Research Group, Medical Research Institute, Faculty of Medicine, Universidad de Antioquia, Medellín, Colombia
| | - Pedro Chana-Cuevas
- CETRAM, Facultad de Ciencias Médicas, Universidad de Santiago de Chile, Santiago, Chile
| | - William Fernandez
- Neuroscience and Cell Death Research Groups, Medical School and Genetic Institute, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Gonzalo Arboleda
- Neuroscience and Cell Death Research Groups, Medical School and Genetic Institute, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Humberto Arboleda
- Neuroscience and Cell Death Research Groups, Medical School and Genetic Institute, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Carlos E. Arboleda Bustos
- Neuroscience and Cell Death Research Groups, Medical School and Genetic Institute, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Dora Yearout
- Veterans Affairs Puget Sound Health Care System, Seattle, Washington, USA
- Department of Neurology, University of Washington, Seattle, Washington, USA
| | | | - Eduardo Tarazona-Santos
- Department of Genetics, Ecology and Evolution, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Cyrus P. Zabetian
- Veterans Affairs Puget Sound Health Care System, Seattle, Washington, USA
- Department of Neurology, University of Washington, Seattle, Washington, USA
| | | | - Timothy A. Thornton
- Department of Biostatistics, University of Washington, Seattle, Washington, USA
| | - Timothy D. O’Connor
- Institute for Genome Sciences, University of Maryland School of Medicine, Baltimore, Maryland, USA
- Program in Health Equity and Population Health, University of Maryland School of Medicine, Baltimore, Maryland, USA
- Program in Personalized and Genomic Medicine, University of Maryland School of Medicine, Baltimore, Maryland, USA
- Department of Medicine, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Ignacio F. Mata
- Lerner Research Institute, Genomic Medicine, Cleveland Clinic, Cleveland, Ohio, USA
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Leal TP, French-Kwawu JN, Gouveia MH, Borda V, Inca-Martinez M, Mason EA, Horimoto ARVR, Loesch DP, Sarihan EI, Cornejo-Olivas MR, Torres LE, Mazzetti-Soler PE, Cosentino C, Sarapura-Castro EH, Rivera-Valdivia A, Medina AC, Dieguez EM, Raggio VE, Lescano A, Tumas V, Borges V, Ferraz HB, Rieder CR, Schumacher-Schuh A, Santos-Lobato BL, Velez-Pardo C, Jimenez-Del-Rio M, Lopera F, Moreno S, Chana-Cuevas P, Fernandez W, Arboleda G, Arboleda H, Arboleda Bustos CE, Yearout D, Lima-Costa MF, Tarazona E, Zabetian C, Thornton TA, O’Connor TD, Mata IF. X-Chromosome Association Study in Latin American Cohorts Identifies New Loci in Parkinson Disease. medRxiv 2023:2023.01.31.23285199. [PMID: 36778409 PMCID: PMC9915833 DOI: 10.1101/2023.01.31.23285199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Sex differences in Parkinson Disease (PD) risk are well-known. However, it is still unclear the role of sex chromosomes in the development and progression of PD. We performed the first X-chromosome Wide Association Study (XWAS) for PD risk in Latin American individuals. We used data from three admixed cohorts: (i) Latin American Research consortium on the GEnetics of Parkinson's Disease (n=1,504) as discover cohort and (ii) Latino cohort from International Parkinson Disease Genomics Consortium (n = 155) and (iii) Bambui Aging cohort (n= 1,442) as replication cohorts. After developing a X-chromosome framework specifically designed for admixed populations, we identified eight linkage disequilibrium regions associated with PD. We fully replicated one of these regions (top variant rs525496; discovery OR [95%CI]: 0.60 [0.478 - 0.77], p = 3.13 × 10 -5 ; replication OR: 0.60 [0.37-0.98], p = 0.04). rs525496 is an expression quantitative trait loci for several genes expressed in brain tissues, including RAB9B, H2BFM, TSMB15B and GLRA4 . We also replicated a previous XWAS finding (rs28602900), showing that this variant is associated with PD in non-European populations. Our results reinforce the importance of including X-chromosome and diverse populations in genetic studies.
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Loesch DP, Horimoto ARVR, Sarihan EI, Inca-Martinez M, Mason E, Cornejo-Olivas M, Torres L, Mazzetti P, Cosentino C, Sarapura-Castro E, Rivera-Valdivia A, Medina AC, Dieguez E, Raggio V, Lescano A, Tumas V, Borges V, Ferraz HB, Rieder CR, Schumacher-Schuh A, Santos-Lobato BL, Velez-Pardo C, Jimenez-Del-Rio M, Lopera F, Moreno S, Chana-Cuevas P, Fernandez W, Arboleda G, Arboleda H, Arboleda-Bustos CE, Yearout D, Zabetian CP, Thornton TA, Mata IF, O'Connor TD. Polygenic risk prediction and SNCA haplotype analysis in a Latino Parkinson's disease cohort. Parkinsonism Relat Disord 2022; 102:7-15. [PMID: 35917738 PMCID: PMC10112543 DOI: 10.1016/j.parkreldis.2022.06.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Revised: 05/25/2022] [Accepted: 06/14/2022] [Indexed: 10/18/2022]
Abstract
BACKGROUND Large-scale Parkinson's disease (PD) genome-wide association studies (GWAS) have, until recently, only been conducted on subjects with European-ancestry. Consequently, polygenic risk scores (PRS) constructed using PD GWAS data are likely to be less predictive when applied to non-European cohorts. METHODS Using GWAS data from the largest study to date, we constructed a PD PRS for a Latino PD cohort (1497 subjects from LARGE-PD) and tested it for association with PD status and age at onset. We validated the PRS performance by testing it in an independent Latino cohort (448 subjects) and by repeating the analysis in LARGE-PD with the addition of 440 external Peruvian controls. We also tested SNCA haplotypes for association with PD risk in LARGE-PD and a European-ancestry PD cohort. RESULTS The GWAS-significant PD PRS had an area under the receiver-operator curve (AUC) of 0.668 (95% CI: 0.640-0.695) in LARGE-PD. The inclusion of external Peruvian controls mitigated this result, dropping the AUC 0.632 (95% CI: 0.607-0.657). At the SNCA locus, haplotypes differ by ancestry. Ancestry-specific SNCA haplotypes were associated with PD status in both LARGE-PD and the European-ancestry cohort (p-value < 0.05). These haplotypes both include the rs356182 G-allele, but only share 14% of their variants overall. CONCLUSION The PD PRS has potential for PD risk prediction in Latinos, but variability caused by admixture patterns and bias in a European-ancestry PD PRS data limits its utility. The inclusion of diverse subjects can help elucidate PD risk loci and improve risk prediction in non-European cohorts.
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Affiliation(s)
- Douglas P Loesch
- Institute for Genome Sciences, University of Maryland School of Medicine, Baltimore, MD, USA; Program in Personalized and Genomic Medicine, University of Maryland School of Medicine, Baltimore, MD, USA; Department of Medicine, University of Maryland School of Medicine, Baltimore, MD, USA
| | | | - Elif Irem Sarihan
- Lerner Research Institute, Genomic Medicine, Cleveland Clinic, Cleveland, OH, USA
| | - Miguel Inca-Martinez
- Lerner Research Institute, Genomic Medicine, Cleveland Clinic, Cleveland, OH, USA
| | - Emily Mason
- Lerner Research Institute, Genomic Medicine, Cleveland Clinic, Cleveland, OH, USA
| | - Mario Cornejo-Olivas
- Neurogenetics Research Center, Instituto Nacional de Ciencias Neurologicas, Lima, Peru; Center for Global Health, Universidad Peruana Cayetano Heredia, Lima, Peru
| | - Luis Torres
- Movement Disorders Unit, Instituto Nacional de Ciencias Neurologicas, Lima, Peru; School of Medicine, Universidad Nacional Mayor de San Marcos, Lima, Peru
| | - Pilar Mazzetti
- Neurogenetics Research Center, Instituto Nacional de Ciencias Neurologicas, Lima, Peru; School of Medicine, Universidad Nacional Mayor de San Marcos, Lima, Peru
| | - Carlos Cosentino
- Movement Disorders Unit, Instituto Nacional de Ciencias Neurologicas, Lima, Peru; School of Medicine, Universidad Nacional Mayor de San Marcos, Lima, Peru
| | | | | | | | - Elena Dieguez
- Neurology Institute, Universidad de la República, Montevideo, Uruguay
| | - Victor Raggio
- Department of Genetics, Facultad de Medicina, Universidad de la República, Montevideo, Uruguay
| | - Andres Lescano
- Department of Genetics, Facultad de Medicina, Universidad de la República, Montevideo, Uruguay
| | - Vitor Tumas
- Ribeirão Preto Medical School, Universidade de São Paulo, Ribeirão Preto, Brazil
| | - Vanderci Borges
- Movement Disorders Unit, Department of Neurology and Neurosurgery, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Henrique B Ferraz
- Movement Disorders Unit, Department of Neurology and Neurosurgery, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Carlos R Rieder
- Departamento de Neurologia, Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, Brazil
| | - Artur Schumacher-Schuh
- Serviço de Neurologia, Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil; Departamento de Farmacologia, Universidade Federal do Rio Grande do Sul, Brazil
| | | | - Carlos Velez-Pardo
- Neuroscience Research Group, Medical Research Institute, Faculty of Medicine, Universidad de Antioquia (UdeA), Medellín, Antioquia, Colombia
| | - Marlene Jimenez-Del-Rio
- Neuroscience Research Group, Medical Research Institute, Faculty of Medicine, Universidad de Antioquia (UdeA), Medellín, Antioquia, Colombia
| | - Francisco Lopera
- Neuroscience Research Group, Medical Research Institute, Faculty of Medicine, Universidad de Antioquia (UdeA), Medellín, Antioquia, Colombia
| | - Sonia Moreno
- Neuroscience Research Group, Medical Research Institute, Faculty of Medicine, Universidad de Antioquia (UdeA), Medellín, Antioquia, Colombia
| | - Pedro Chana-Cuevas
- CETRAM, Facultad de ciencias Medicas, Universidad de Santiago de Chile, Chile
| | - William Fernandez
- Neuroscience and Cell Death Research Groups, Medical School and Genetic Institute, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Gonzalo Arboleda
- Neuroscience and Cell Death Research Groups, Medical School and Genetic Institute, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Humberto Arboleda
- Neuroscience and Cell Death Research Groups, Medical School and Genetic Institute, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Carlos E Arboleda-Bustos
- Neuroscience and Cell Death Research Groups, Medical School and Genetic Institute, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Dora Yearout
- Veterans Affairs Puget Sound Health Care System, Seattle, WA, USA; Department of Neurology, University of Washington, Seattle, WA, USA
| | - Cyrus P Zabetian
- Veterans Affairs Puget Sound Health Care System, Seattle, WA, USA; Department of Neurology, University of Washington, Seattle, WA, USA
| | | | - Ignacio F Mata
- Lerner Research Institute, Genomic Medicine, Cleveland Clinic, Cleveland, OH, USA; Veterans Affairs Puget Sound Health Care System, Seattle, WA, USA; Department of Neurology, University of Washington, Seattle, WA, USA.
| | - Timothy D O'Connor
- Institute for Genome Sciences, University of Maryland School of Medicine, Baltimore, MD, USA; Program in Personalized and Genomic Medicine, University of Maryland School of Medicine, Baltimore, MD, USA; Department of Medicine, University of Maryland School of Medicine, Baltimore, MD, USA.
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Cruz-Sanabria F, Bonilla-Vargas K, Estrada K, Mancera O, Vega E, Guerrero E, Ortega-Rojas J, Mahecha María F, Romero A, Montañés P, Celeita V, Arboleda H, Pardo R. Analysis of cognitive performance and polymorphisms of SORL1, PVRL2, CR1, TOMM40, APOE, PICALM, GWAS_14q, CLU, and BIN1 in patients with mild cognitive impairment and cognitively healthy controls. Neurologia (Engl Ed) 2021; 36:681-691. [PMID: 34752346 DOI: 10.1016/j.nrleng.2018.07.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 02/03/2018] [Accepted: 07/28/2018] [Indexed: 11/30/2022] Open
Abstract
INTRODUCTION Alzheimer disease risk polymorphisms have been studied in patients with dementia, but have not yet been explored in mild cognitive impairment (MCI) in our population; nor have they been addressed in relation to cognitive variables, which can be predictive biomarkers of disease. OBJECTIVE To evaluate cognitive performance and presence of polymorphisms of the genes SORL1(rs11218304), PVRL2(rs6859), CR1(rs6656401), TOMM40(rs2075650), APOE (isoforms ε2, ε3, ε4), PICALM(rs3851179), GWAS_14q(rs11622883), BIN1(rs744373), and CLU(rs227959 and rs11136000) in patients with MCI and healthy individuals. METHODOLOGY We performed a cross-sectional, exploratory, descriptive study of a prospective cohort of participants selected by non-probabilistic sampling, evaluated with neurological, neuropsychological, and genetic testing, and classified as cognitively healthy individuals and patients with MCI. Cognition was evaluated with the Neuronorma battery and analysed in relation to the polymorphic variants by means of measures of central tendency, confidence intervals, and nonparametric statistics. RESULTS We found differences in performance in language and memory tasks between carriers and non-carriers of BIN1, CLU, and CR1 variants and a trend towards poor cognitive performance for PICALM, GWAS_14q, SORL1, and PVRL2 variants; the APOE and TOMM40 variants were not associated with poor cognitive performance. DISCUSSION Differences in cognitive performance associated with these polymorphic variants may suggest that the mechanisms regulating these genes could have an effect on cognition in the absence of dementia; however, this study was exploratory and hypotheses based on these results must be explored in larger samples.
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Affiliation(s)
- F Cruz-Sanabria
- Grupo de Neurociencias, Universidad Nacional de Colombia, Bogotá, Colombia; Departamento de Psicología, Universidad Nacional de Colombia, Bogotá, Colombia; PhD Program in Clinical and Translational Science, Department of Translational Research and of New Surgical and Medical Technologies, University of Pisa, Italy.
| | - K Bonilla-Vargas
- Grupo de Neurociencias, Universidad Nacional de Colombia, Bogotá, Colombia; Departamento de Psicología, Universidad Nacional de Colombia, Bogotá, Colombia; Unidad de Neurología, Hospital Universitario Nacional, Bogotá, Colombia
| | - K Estrada
- Grupo de Neurociencias, Universidad Nacional de Colombia, Bogotá, Colombia; Instituto de Investigaciones Clínicas, Universidad Nacional de Colombia, Bogotá, Colombia
| | - O Mancera
- Grupo de Neurociencias, Universidad Nacional de Colombia, Bogotá, Colombia; Unidad de Neurología, Hospital Universitario Nacional, Bogotá, Colombia
| | - E Vega
- Grupo de Neurociencias, Universidad Nacional de Colombia, Bogotá, Colombia
| | - E Guerrero
- Grupo de Neurociencias, Universidad Nacional de Colombia, Bogotá, Colombia
| | - J Ortega-Rojas
- Grupo de Neurociencias, Universidad Nacional de Colombia, Bogotá, Colombia
| | - F Mahecha María
- Grupo de Neurociencias, Universidad Nacional de Colombia, Bogotá, Colombia
| | - A Romero
- Grupo de Neurociencias, Universidad Nacional de Colombia, Bogotá, Colombia; Departamento de Psicología, Universidad Nacional de Colombia, Bogotá, Colombia
| | - P Montañés
- Grupo de Neurociencias, Universidad Nacional de Colombia, Bogotá, Colombia; Departamento de Psicología, Universidad Nacional de Colombia, Bogotá, Colombia
| | - V Celeita
- Departamento de Psicología, Universidad Nacional de Colombia, Bogotá, Colombia
| | - H Arboleda
- Grupo de Neurociencias, Universidad Nacional de Colombia, Bogotá, Colombia
| | - R Pardo
- Grupo de Neurociencias, Universidad Nacional de Colombia, Bogotá, Colombia; Unidad de Neurología, Hospital Universitario Nacional, Bogotá, Colombia; Instituto de Investigaciones Clínicas, Universidad Nacional de Colombia, Bogotá, Colombia
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Guimarães Alves AC, Sukow NM, Adelman Cipolla G, Mendes M, Leal TP, Petzl-Erler ML, Lehtonen Rodrigues Souza R, Rainha de Souza I, Sanchez C, Santolalla M, Loesch D, Dean M, Machado M, Moon JY, Kaplan R, North KE, Weiss S, Barreto ML, Lima-Costa MF, Guio H, Cáceres O, Padilla C, Tarazona-Santos E, Mata IF, Dieguez E, Raggio V, Lescano A, Tumas V, Borges V, Ferraz HB, Rieder CR, Schumacher-Schuh A, Santos-Lobato BL, Chana-Cuevas P, Fernandez W, Arboleda G, Arboleda H, Arboleda-Bustos CE, O’Connor TD, Beltrame MH, Borda V. Tracing the Distribution of European Lactase Persistence Genotypes Along the Americas. Front Genet 2021; 12:671079. [PMID: 34630506 PMCID: PMC8493957 DOI: 10.3389/fgene.2021.671079] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Accepted: 06/23/2021] [Indexed: 01/26/2023] Open
Abstract
In adulthood, the ability to digest lactose, the main sugar present in milk of mammals, is a phenotype (lactase persistence) observed in historically herder populations, mainly Northern Europeans, Eastern Africans, and Middle Eastern nomads. As the -13910∗T allele in the MCM6 gene is the most well-characterized allele responsible for the lactase persistence phenotype, the -13910C > T (rs4988235) polymorphism is commonly evaluated in lactase persistence studies. Lactase non-persistent adults may develop symptoms of lactose intolerance when consuming dairy products. In the Americas, there is no evidence of the consumption of these products until the arrival of Europeans. However, several American countries' dietary guidelines recommend consuming dairy for adequate human nutrition and health promotion. Considering the extensive use of dairy and the complex ancestry of Pan-American admixed populations, we studied the distribution of -13910C > T lactase persistence genotypes and its flanking haplotypes of European origin in 7,428 individuals from several Pan-American admixed populations. We found that the -13910∗T allele frequency in Pan-American admixed populations is directly correlated with allele frequency of the European sources. Moreover, we did not observe any overrepresentation of European haplotypes in the -13910C > T flanking region, suggesting no selective pressure after admixture in the Americas. Finally, considering the dominant effect of the -13910∗T allele, our results indicate that Pan-American admixed populations are likely to have higher frequency of lactose intolerance, suggesting that general dietary guidelines deserve further evaluation across the continent.
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Affiliation(s)
- Ana Cecília Guimarães Alves
- Laboratório de Genética Molecular Humana, Departamento de Genética, Setor de Ciências Biológicas, Universidade Federal do Paraná, Curitiba, Brazil
- Programa de Pós-Graduação em Genética, Departamento de Genética, Setor de Ciências Biológicas, Universidade Federal do Paraná, Curitiba, Brazil
| | - Natalie Mary Sukow
- Laboratório de Genética Molecular Humana, Departamento de Genética, Setor de Ciências Biológicas, Universidade Federal do Paraná, Curitiba, Brazil
| | - Gabriel Adelman Cipolla
- Laboratório de Genética Molecular Humana, Departamento de Genética, Setor de Ciências Biológicas, Universidade Federal do Paraná, Curitiba, Brazil
| | - Marla Mendes
- Laboratório de Diversidade Genética Humana, Departamento de Genética, Ecologia e Evolução, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Thiago P. Leal
- Laboratório de Diversidade Genética Humana, Departamento de Genética, Ecologia e Evolução, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Maria Luiza Petzl-Erler
- Laboratório de Genética Molecular Humana, Departamento de Genética, Setor de Ciências Biológicas, Universidade Federal do Paraná, Curitiba, Brazil
- Programa de Pós-Graduação em Genética, Departamento de Genética, Setor de Ciências Biológicas, Universidade Federal do Paraná, Curitiba, Brazil
| | - Ricardo Lehtonen Rodrigues Souza
- Programa de Pós-Graduação em Genética, Departamento de Genética, Setor de Ciências Biológicas, Universidade Federal do Paraná, Curitiba, Brazil
- Laboratório de Polimorfismos e Ligação, Departamento de Genética, Setor de Ciências Biológicas, Universidade Federal do Paraná, Curitiba, Brazil
| | - Ilíada Rainha de Souza
- Laboratório de Genética Molecular Humana, Departamento de Genética, Setor de Ciências Biológicas, Universidade Federal do Paraná, Curitiba, Brazil
- Laboratório de Polimorfismos Genéticos, Departamento de Biologia Celular, Embriologia e Genética, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, Florianópolis, Brazil
| | - Cesar Sanchez
- Laboratorio de Biotecnología y Biología Molecular, Instituto Nacional de Salud, Lima, Peru
| | - Meddly Santolalla
- Emerging Diseases and Climate Change Research Unit, School of Public Health and Administration, Universidad Peruana Cayetano Heredia, Lima, Peru
| | - Douglas Loesch
- Institute for Genome Sciences, University of Maryland School of Medicine, Baltimore, MD, United States
| | - Michael Dean
- Division of Cancer Epidemiology and Genetics, National Cancer Institute (NCI), National Institutes of Health (NIH), Bethesda, MD, United States
| | - Moara Machado
- Laboratório de Diversidade Genética Humana, Departamento de Genética, Ecologia e Evolução, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Jee-Young Moon
- Department of Epidemiology and Population Health, Albert Einstein College of Medicine, Bronx, NY, United States
| | - Robert Kaplan
- Department of Epidemiology and Population Health, Albert Einstein College of Medicine, Bronx, NY, United States
- Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, Seattle, WA, United States
| | - Kari E. North
- Department of Epidemiology, Gillings School of Global Public Health, The University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - Scott Weiss
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA, United States
| | - Mauricio L. Barreto
- Universidade Federal da Bahia, Instituto de Saúde Coletiva, Salvador, Brazil
- Fundação Oswaldo Cruz, Centro de Integração de Dados e Conhecimentos para Saúde (Cidacs), Salvador, Brazil
| | - M. Fernanda Lima-Costa
- Fundação Oswaldo Cruz, Instituto René Rachou, Belo Horizonte, Brazil
- Universidade Federal de Minas Gerais, Programa de Pós-Graduação em Saúde Pública, Belo Horizonte, Brazil
| | - Heinner Guio
- Laboratorio de Biotecnología y Biología Molecular, Instituto Nacional de Salud, Lima, Peru
- Facultad de Ciencias de la Salud, Universidad de Huánuco, Huánuco, Peru
| | - Omar Cáceres
- Laboratorio de Biotecnología y Biología Molecular, Instituto Nacional de Salud, Lima, Peru
- Carrera de Medicina Humana, Facultad de Ciencias de la Salud, Universidad Científica del Sur, Lima, Peru
| | - Carlos Padilla
- Laboratorio de Biotecnología y Biología Molecular, Instituto Nacional de Salud, Lima, Peru
| | - Eduardo Tarazona-Santos
- Laboratório de Diversidade Genética Humana, Departamento de Genética, Ecologia e Evolução, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Ignacio F. Mata
- Veterans Affairs Puget Sound Health Care System, Seattle, WA, United States
- Department of Neurology, University of Washington, Seattle, WA, United States
- Lerner Research Institute, Genomic Medicine, Cleveland Clinic, Cleveland, OH, United States
| | - Elena Dieguez
- Neurology Institute, Universidad de la República, Montevideo, Uruguay
| | - Víctor Raggio
- Department of Genetics, Facultad de Medicina, Universidad de la República, Montevideo, Uruguay
| | - Andres Lescano
- Neurology Institute, Universidad de la República, Montevideo, Uruguay
| | - Vitor Tumas
- Ribeirão Preto Medical School, Universidade de São Paulo, Ribeirão Preto, Brazil
| | - Vanderci Borges
- Movement Disorders Unit, Department of Neurology and Neurosurgery, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Henrique B. Ferraz
- Movement Disorders Unit, Department of Neurology and Neurosurgery, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Carlos R. Rieder
- Departamento de Neurologia, Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, Brazil
| | - Artur Schumacher-Schuh
- Serviço de Neurologia, Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil
- Departamento de Farmacologia, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | | | - Pedro Chana-Cuevas
- CETRAM, Facultad de Ciencias Médicas, Universidad de Santiago de Chile, Santiago, Chile
| | - William Fernandez
- Neuroscience and Cell Death Research Groups, Medical School and Genetic Institute, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Gonzalo Arboleda
- Neuroscience and Cell Death Research Groups, Medical School and Genetic Institute, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Humberto Arboleda
- Neuroscience and Cell Death Research Groups, Medical School and Genetic Institute, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Carlos E. Arboleda-Bustos
- Neuroscience and Cell Death Research Groups, Medical School and Genetic Institute, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Timothy D. O’Connor
- Institute for Genome Sciences, University of Maryland School of Medicine, Baltimore, MD, United States
- Program for Personalized and Genomic Medicine, School of Medicine, University of Maryland, Baltimore, Baltimore, MD, United States
- Department of Medicine, School of Medicine, University of Maryland, Baltimore, Baltimore, MD, United States
| | - Marcia Holsbach Beltrame
- Laboratório de Genética Molecular Humana, Departamento de Genética, Setor de Ciências Biológicas, Universidade Federal do Paraná, Curitiba, Brazil
- Programa de Pós-Graduação em Genética, Departamento de Genética, Setor de Ciências Biológicas, Universidade Federal do Paraná, Curitiba, Brazil
| | - Victor Borda
- Institute for Genome Sciences, University of Maryland School of Medicine, Baltimore, MD, United States
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Loesch DP, Horimoto ARVR, Heilbron K, Sarihan EI, Inca-Martinez M, Mason E, Cornejo-Olivas M, Torres L, Mazzetti P, Cosentino C, Sarapura-Castro E, Rivera-Valdivia A, Medina AC, Dieguez E, Raggio V, Lescano A, Tumas V, Borges V, Ferraz HB, Rieder CR, Schumacher-Schuh A, Santos-Lobato BL, Velez-Pardo C, Jimenez-Del-Rio M, Lopera F, Moreno S, Chana-Cuevas P, Fernandez W, Arboleda G, Arboleda H, Arboleda-Bustos CE, Yearout D, Zabetian CP, Cannon P, Thornton TA, O'Connor TD, Mata IF. Characterizing the Genetic Architecture of Parkinson's Disease in Latinos. Ann Neurol 2021; 90:353-365. [PMID: 34227697 DOI: 10.1002/ana.26153] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2021] [Revised: 06/03/2021] [Accepted: 06/27/2021] [Indexed: 12/14/2022]
Abstract
OBJECTIVE This work was undertaken in order to identify Parkinson's disease (PD) risk variants in a Latino cohort, to describe the overlap in the genetic architecture of PD in Latinos compared to European-ancestry subjects, and to increase the diversity in PD genome-wide association (GWAS) data. METHODS We genotyped and imputed 1,497 PD cases and controls recruited from nine clinical sites across South America. We performed a GWAS using logistic mixed models; variants with a p-value <1 × 10-5 were tested in a replication cohort of 1,234 self-reported Latino PD cases and 439,522 Latino controls from 23andMe, Inc. We also performed an admixture mapping analysis where local ancestry blocks were tested for association with PD status. RESULTS One locus, SNCA, achieved genome-wide significance (p-value <5 × 10-8 ); rs356182 achieved genome-wide significance in both the discovery and the replication cohorts (discovery, G allele: 1.58 OR, 95% CI 1.35-1.86, p-value 2.48 × 10-8 ; 23andMe, G allele: 1.26 OR, 95% CI 1.16-1.37, p-value 4.55 × 10-8 ). In our admixture mapping analysis, a locus on chromosome 14, containing the gene STXBP6, achieved significance in a joint test of ancestries and in the Native American single-ancestry test (p-value <5 × 10-5 ). A second locus on chromosome 6, containing the gene RPS6KA2, achieved significance in the African single-ancestry test (p-value <5 × 10-5 ). INTERPRETATION This study demonstrated the importance of the SNCA locus for the etiology of PD in Latinos. By leveraging the demographic history of our cohort via admixture mapping, we identified two potential PD risk loci that merit further study. ANN NEUROL 2021.
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Affiliation(s)
- Douglas P Loesch
- Institute for Genome Sciences, University of Maryland School of Medicine, Baltimore, MD.,Program in Personalized and Genomic Medicine, University of Maryland School of Medicine, Baltimore, MD.,Department of Medicine, University of Maryland School of Medicine, Baltimore, MD
| | | | | | - Elif I Sarihan
- Lerner Research Institute, Genomic Medicine, Cleveland Clinic, Cleveland, OH
| | | | - Emily Mason
- Lerner Research Institute, Genomic Medicine, Cleveland Clinic, Cleveland, OH
| | - Mario Cornejo-Olivas
- Neurogenetics Research Center, Instituto Nacional de Ciencias Neurologicas, Lima, Peru.,Center for Global Health, Universidad Peruana Cayetano Heredia, Lima, Peru
| | - Luis Torres
- Movement Disorders Unit, Instituto Nacional de Ciencias Neurologicas, Lima, Peru.,School of Medicine, Universidad Nacional Mayor de San Marcos, Lima, Peru
| | - Pilar Mazzetti
- Neurogenetics Research Center, Instituto Nacional de Ciencias Neurologicas, Lima, Peru.,School of Medicine, Universidad Nacional Mayor de San Marcos, Lima, Peru
| | - Carlos Cosentino
- Movement Disorders Unit, Instituto Nacional de Ciencias Neurologicas, Lima, Peru.,School of Medicine, Universidad Nacional Mayor de San Marcos, Lima, Peru
| | | | | | | | - Elena Dieguez
- Neurology Institute, Universidad de la República, Montevideo, Uruguay
| | - Victor Raggio
- Department of Genetics, Facultad de Medicina, Universidad de la República, Montevideo, Uruguay
| | - Andres Lescano
- Neurology Institute, Universidad de la República, Montevideo, Uruguay
| | - Vitor Tumas
- Ribeirão Preto Medical School, Universidade de São Paulo, Ribeirão Preto, Brazil
| | - Vanderci Borges
- Movement Disorders Unit, Department of Neurology and Neurosurgery, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Henrique B Ferraz
- Movement Disorders Unit, Department of Neurology and Neurosurgery, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Carlos R Rieder
- Departamento de Neurologia, Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, Brazil
| | - Artur Schumacher-Schuh
- Serviço de Neurologia, Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil.,Departamento de Farmacologia, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | | | - Carlos Velez-Pardo
- Neuroscience Research Group, Medical Research Institute, Faculty of Medicine, Universidad de Antioquia (UdeA), Medellín, Colombia
| | - Marlene Jimenez-Del-Rio
- Neuroscience Research Group, Medical Research Institute, Faculty of Medicine, Universidad de Antioquia (UdeA), Medellín, Colombia
| | - Francisco Lopera
- Neuroscience Research Group, Medical Research Institute, Faculty of Medicine, Universidad de Antioquia (UdeA), Medellín, Colombia
| | - Sonia Moreno
- Neuroscience Research Group, Medical Research Institute, Faculty of Medicine, Universidad de Antioquia (UdeA), Medellín, Colombia
| | - Pedro Chana-Cuevas
- CETRAM, Facultad de ciencias Medicas, Universidad de Santiago de Chile, Santiago, Chile
| | - William Fernandez
- Neuroscience and Cell Death Research Groups, Medical School and Genetic Institute, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Gonzalo Arboleda
- Neuroscience and Cell Death Research Groups, Medical School and Genetic Institute, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Humberto Arboleda
- Neuroscience and Cell Death Research Groups, Medical School and Genetic Institute, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Carlos E Arboleda-Bustos
- Neuroscience and Cell Death Research Groups, Medical School and Genetic Institute, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Dora Yearout
- Veterans Affairs Puget Sound Health Care System, Seattle, WA.,Department of Neurology, University of Washington, Seattle, WA
| | - Cyrus P Zabetian
- Veterans Affairs Puget Sound Health Care System, Seattle, WA.,Department of Neurology, University of Washington, Seattle, WA
| | | | | | | | - Timothy D O'Connor
- Institute for Genome Sciences, University of Maryland School of Medicine, Baltimore, MD.,Program in Personalized and Genomic Medicine, University of Maryland School of Medicine, Baltimore, MD.,Department of Medicine, University of Maryland School of Medicine, Baltimore, MD
| | - Ignacio F Mata
- Lerner Research Institute, Genomic Medicine, Cleveland Clinic, Cleveland, OH.,Veterans Affairs Puget Sound Health Care System, Seattle, WA.,Department of Neurology, University of Washington, Seattle, WA
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Hernández HG, Hernández-Castañeda AA, Pieschacón MP, Arboleda H. ZNF718, HOXA4, and ZFP57 are differentially methylated in periodontitis in comparison with periodontal health: Epigenome-wide DNA methylation pilot study. J Periodontal Res 2021; 56:710-725. [PMID: 33660869 DOI: 10.1111/jre.12868] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [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: 07/30/2020] [Revised: 02/07/2021] [Accepted: 02/14/2021] [Indexed: 12/21/2022]
Abstract
OBJECTIVE To investigate the differences in the epigenomic patterns of DNA methylation in peripheral leukocytes between patients with periodontitis and gingivally healthy controls evaluating its functional meaning by functional enrichment analysis. BACKGROUND The DNA methylation profiling of peripheral leukocytes as immune-related tissue potentially relevant as a source of biomarkers between periodontitis patients and gingivally healthy subjects has not been investigated. METHODS A DNA methylation epigenome-wide study of peripheral leukocytes was conducted using the Illumina MethylationEPIC platform in sixteen subjects, eight diagnosed with periodontitis patients and eight age-matched and sex-matched periodontally healthy controls. A trained periodontist performed the clinical evaluation. Global DNA methylation was estimated using methylation-sensitive high-resolution melting in LINE1. Routine cell count cytometry and metabolic laboratory tests were also performed. The analysis of differentially methylated positions (DMPs) and differentially methylated regions (DMRs) was made using R/Bioconductor environment considering leukocyte populations assessed in both routine cell counts and using the FlowSorted.Blood.EPIC package. Finally, a DMP and DMR intersection analysis was performed. Functional enrichment analysis was carried out with the differentially methylated genes found in DMP. RESULTS DMP analysis identified 81 differentially hypermethylated genes and 21 differentially hypomethylated genes. Importantly, the intersection analysis showed that zinc finger protein 718 (ZNF718) and homeobox A4 (HOXA4) were differentially hypermethylated and zinc finger protein 57 (ZFP57) was differentially hypomethylated in periodontitis. The functional enrichment analysis found clearly immune-related ontologies such as "detection of bacterium" and "antigen processing and presentation." CONCLUSION The results of this study propose three new periodontitis-related genes: ZNF718, HOXA4, and ZFP57 but also evidence the suitability and relevance of studying leukocytes' DNA methylome for biological interpretation of systemic immune-related epigenetic patterns in periodontitis.
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Affiliation(s)
- Hernán G Hernández
- Faculty of Dentistry, Division of Health Sciences, Universidad Santo Tomás, Bucaramanga, Colombia
| | | | - Maria P Pieschacón
- Faculty of Dentistry, Division of Health Sciences, Universidad Santo Tomás, Bucaramanga, Colombia
| | - Humberto Arboleda
- Neurosciences Research Group, Faculty of Medicine and Genetic Institute, Universidad Nacional de Colombia, Bogotá, Colombia
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9
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Sarihan EI, Pérez-Palma E, Niestroj LM, Loesch D, Inca-Martinez M, Horimoto AR, Cornejo-Olivas M, Torres L, Mazzetti P, Cosentino C, Sarapura-Castro E, Rivera-Valdivia A, Dieguez E, Raggio V, Lescano A, Tumas V, Borges V, Ferraz HB, Rieder CR, Schumacher-Schuh AF, Santos-Lobato BL, Velez-Pardo C, Jimenez-Del-Rio M, Lopera F, Moreno S, Chana-Cuevas P, Fernandez W, Arboleda G, Arboleda H, Arboleda-Bustos CE, Yearout D, Zabetian CP, Thornton TA, O’Connor TD, Lal D, Mata IF. Genome-Wide Analysis of Copy Number Variation in Latin American Parkinson's Disease Patients. Mov Disord 2021; 36:434-441. [PMID: 33150996 PMCID: PMC8059262 DOI: 10.1002/mds.28353] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [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: 06/09/2020] [Revised: 09/01/2020] [Accepted: 09/10/2020] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Parkinson's disease is the second most common neurodegenerative disorder and affects people from all ethnic backgrounds, yet little is known about the genetics of Parkinson's disease in non-European populations. In addition, the overall identification of copy number variants at a genome-wide level has been understudied in Parkinson's patients. The objective of this study was to understand the genome-wide burden of copy number variants in Latinos and its association with Parkinson's disease. METHODS We used genome-wide genotyping data from 747 Parkinson's disease patients and 632 controls from the Latin American Research Consortium on the Genetics of Parkinson's disease. RESULTS Genome-wide copy number burden analysis showed that patients were significantly enriched for copy number variants overlapping known Parkinson's disease genes compared with controls (odds ratio, 3.97; 95%CI, 1.69-10.5; P = 0.018). PRKN showed the strongest copy number burden, with 20 copy number variant carriers. These patients presented an earlier age of disease onset compared with patients with other copy number variants (median age at onset, 31 vs 57 years, respectively; P = 7.46 × 10-7 ). CONCLUSIONS We found that although overall genome-wide copy number variant burden was not significantly different, Parkinson's disease patients were significantly enriched with copy number variants affecting known Parkinson's disease genes. We also identified that of 250 patients with early-onset disease, 5.6% carried a copy number variant on PRKN in our cohort. Our study is the first to analyze genome-wide copy number variant association in Latino Parkinson's disease patients and provides insights about this complex disease in this understudied population. © 2020 International Parkinson and Movement Disorder Society.
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Affiliation(s)
- Elif Irem Sarihan
- Lerner Research Institute, Genomic Medicine, Cleveland Clinic, Cleveland, Ohio, USA
| | - Eduardo Pérez-Palma
- Lerner Research Institute, Genomic Medicine, Cleveland Clinic, Cleveland, Ohio, USA
| | | | - Douglas Loesch
- Institute for Genome Sciences, University of Maryland School of Medicine, Baltimore, Maryland, USA
- Program in Personalized and Genomic Medicine, University of Maryland School of Medicine, Baltimore, Maryland, USA
- Department of Medicine, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Miguel Inca-Martinez
- Lerner Research Institute, Genomic Medicine, Cleveland Clinic, Cleveland, Ohio, USA
| | - Andrea R.V.R. Horimoto
- Division of Medical Genetics, Department of Medicine, University of Washington, Seattle, Washington, USA
| | - Mario Cornejo-Olivas
- Neurogenetics Research Center, Instituto Nacional de Ciencias Neurologicas, Lima, Peru
- Center for Global Health, Universidad Peruana Cayetano Heredia, Lima, Peru
| | - Luis Torres
- Movement Disorders Unit, Instituto Nacional de Ciencias Neurologicas, Lima, Peru
- School of Medicine, Universidad Nacional Mayor de San Marcos, Lima, Peru
| | - Pilar Mazzetti
- Neurogenetics Research Center, Instituto Nacional de Ciencias Neurologicas, Lima, Peru
- School of Medicine, Universidad Nacional Mayor de San Marcos, Lima, Peru
| | - Carlos Cosentino
- Movement Disorders Unit, Instituto Nacional de Ciencias Neurologicas, Lima, Peru
- School of Medicine, Universidad Nacional Mayor de San Marcos, Lima, Peru
| | | | | | - Elena Dieguez
- Neurology Institute, Universidad de la República, Montevideo, Uruguay
| | - Victor Raggio
- Department of Genetics, Facultad de Medicina, Universidad de la República, Montevideo, Uruguay
| | - Andres Lescano
- Neurology Institute, Universidad de la República, Montevideo, Uruguay
| | - Vitor Tumas
- Ribeirão Preto Medical School, Universidade de São Paulo, Ribeirão Preto, Brazil
| | - Vanderci Borges
- Movement Disorders Unit, Department of Neurology and Neurosurgery, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Henrique B. Ferraz
- Movement Disorders Unit, Department of Neurology and Neurosurgery, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Carlos R. Rieder
- Departamento de Neurologia, Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, Brazil
| | - Artur F. Schumacher-Schuh
- Serviço de Neurologia, Hospital de Clínicas de Porto Alegre and Departamento de Farmacologia Universidade Federal do Rio Grande do Su, Porto Alegre, Brazil
| | | | - Carlos Velez-Pardo
- Neuroscience Research Group, Medical Research Institute, Faculty of Medicine, Universidad de Antioquia (UdeA), Medellín, Colombia
| | - Marlene Jimenez-Del-Rio
- Neuroscience Research Group, Medical Research Institute, Faculty of Medicine, Universidad de Antioquia (UdeA), Medellín, Colombia
| | - Francisco Lopera
- Neuroscience Research Group, Medical Research Institute, Faculty of Medicine, Universidad de Antioquia (UdeA), Medellín, Colombia
| | - Sonia Moreno
- Neuroscience Research Group, Medical Research Institute, Faculty of Medicine, Universidad de Antioquia (UdeA), Medellín, Colombia
| | - Pedro Chana-Cuevas
- CETRAM, Facultad de Ciencias Medicas, Universidad de Santiago de Chile, Santiago de Chile, Chile
| | - William Fernandez
- Neuroscience and Cell Death Research Groups, Medical School and Genetic Institute, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Gonzalo Arboleda
- Neuroscience and Cell Death Research Groups, Medical School and Genetic Institute, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Humberto Arboleda
- Neuroscience and Cell Death Research Groups, Medical School and Genetic Institute, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Carlos E. Arboleda-Bustos
- Neuroscience and Cell Death Research Groups, Medical School and Genetic Institute, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Dora Yearout
- Veterans Affairs Puget Sound Health Care System, Seattle, Washington, USA
- Department of Neurology, University of Washington, Seattle, Washington, USA
| | - Cyrus P. Zabetian
- Veterans Affairs Puget Sound Health Care System, Seattle, Washington, USA
- Department of Neurology, University of Washington, Seattle, Washington, USA
| | - Timothy A. Thornton
- Department of Biostatistics, University of Washington, Seattle, Washington, USA
| | - Timothy D. O’Connor
- Institute for Genome Sciences, University of Maryland School of Medicine, Baltimore, Maryland, USA
- Program in Personalized and Genomic Medicine, University of Maryland School of Medicine, Baltimore, Maryland, USA
- Department of Medicine, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Dennis Lal
- Lerner Research Institute, Genomic Medicine, Cleveland Clinic, Cleveland, Ohio, USA
- Cologne Center for Genomics, University of Cologne, Cologne, Germany
- Stanley Center for Psychiatric Research, Broad Institute of MIT & Harvard, Cambridge, Massachusetts, USA
- Epilepsy Center & Department of Neurology, Neurological Institute, Cleveland Clinic, Cleveland, Ohio, USA
| | - Ignacio F. Mata
- Lerner Research Institute, Genomic Medicine, Cleveland Clinic, Cleveland, Ohio, USA
- Veterans Affairs Puget Sound Health Care System, Seattle, Washington, USA
- Department of Neurology, University of Washington, Seattle, Washington, USA
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Báez-Becerra CT, Valencia-Rincón E, Velásquez-Méndez K, Ramírez-Suárez NJ, Guevara C, Sandoval-Hernandez A, Arboleda-Bustos CE, Olivos-Cisneros L, Gutiérrez-Ospina G, Arboleda H, Arboleda G. Nucleolar disruption, activation of P53 and premature senescence in POLR3A-mutated Wiedemann-Rautenstrauch syndrome fibroblasts. Mech Ageing Dev 2020; 192:111360. [PMID: 32976914 DOI: 10.1016/j.mad.2020.111360] [Citation(s) in RCA: 4] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Revised: 09/15/2020] [Accepted: 09/17/2020] [Indexed: 01/01/2023]
Abstract
Recently, mutations in the RNA polymerase III subunit A (POLR3A) have been described as the cause of the neonatal progeria or Wiedemann-Rautenstrauch syndrome (WRS). POLR3A has important roles in transcription regulation of small RNAs, including tRNA, 5S rRNA, and 7SK rRNA. We aim to describe the cellular and molecular features of WRS fibroblasts. Cultures of primary fibroblasts from one WRS patient [monoallelic POLR3A variant c.3772_3773delCT (p.Leu1258Glyfs*12)] and one control patient were cultured in vitro. The mutation caused a decrease in the expression of wildtype POLR3A mRNA and POLR3A protein and a sharp increase in mutant protein expression. In addition, there was an increase in the nuclear localization of the mutant protein. These changes were associated with an increase in the number and area of nucleoli and to a high increase in the expression of pP53 and pH2AX. All these changes were associated with premature senescence. The present observations add to our understanding of the differences between Hutchinson-Gilford progeria syndrome and WRS and opens new alternatives to study cell senesce and human aging.
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Affiliation(s)
- Cindy Tatiana Báez-Becerra
- Grupo de Neurociencias y Muerte Celular, Instituto de Genética, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Estefania Valencia-Rincón
- Grupo de Neurociencias y Muerte Celular, Instituto de Genética, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Karen Velásquez-Méndez
- Grupo de Neurociencias y Muerte Celular, Instituto de Genética, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Nelson J Ramírez-Suárez
- Grupo de Neurociencias y Muerte Celular, Instituto de Genética, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Claudia Guevara
- Grupo de Neurociencias y Muerte Celular, Instituto de Genética, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Adrian Sandoval-Hernandez
- Grupo de Neurociencias y Muerte Celular, Instituto de Genética, Universidad Nacional de Colombia, Bogotá, Colombia; Departamento de Química, Facultad de Ciencias, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Carlos E Arboleda-Bustos
- Grupo de Neurociencias y Muerte Celular, Instituto de Genética, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Leonora Olivos-Cisneros
- Departamento de Biología Celular y Fisiología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Ciudad de Mexico, Mexico
| | - Gabriel Gutiérrez-Ospina
- Departamento de Biología Celular y Fisiología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Ciudad de Mexico, Mexico
| | - Humberto Arboleda
- Grupo de Neurociencias y Muerte Celular, Instituto de Genética, Universidad Nacional de Colombia, Bogotá, Colombia; Departamento de Pediatría, Facultad de Medicina, Universidad Nacional de Colombia Bogotá, Colombia
| | - Gonzalo Arboleda
- Grupo de Neurociencias y Muerte Celular, Instituto de Genética, Universidad Nacional de Colombia, Bogotá, Colombia; Departamento de Patología, Facultad de Medicina, Universidad Nacional de Colombia, Bogotá, Colombia.
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11
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Melgarejo JD, Aguirre-Acevedo DC, Gaona C, Chavez CA, Calmón GE, Silva ER, de Erausquin GA, Gil M, Mena LJ, Terwilliger JD, Arboleda H, Scarmeas N, Lee JH, Maestre GE. Nighttime Blood Pressure Interacts with APOE Genotype to Increase the Risk of Incident Dementia of the Alzheimer's Type in Hispanics. J Alzheimers Dis 2020; 77:569-579. [PMID: 32675415 PMCID: PMC7577347 DOI: 10.3233/jad-200430] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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] [Indexed: 12/13/2022]
Abstract
BACKGROUND Dementia of the Alzheimer's type (DAT) impacts Hispanics disproportionately, with almost a twofold elevated risk of developing DAT, as well as earlier onset of the disease, than in non-Hispanic Whites. However, the role of main risk factors for DAT, such as APOE-ɛ4 and blood pressure (BP) levels, remains uncertain among Hispanics. OBJECTIVE To investigate the association of APOE-ɛ4 and BP levels, measures with 24-h ambulatory BP monitoring, with incidence of DAT in an elderly cohort of Hispanics. METHODS 1,320 participants from the Maracaibo Aging Study, free of dementia at the baseline, and with ambulatory BP measurements and APOE genotype available were included. Adjusted Cox proportional models were performed to examine 1) the incidence of DAT and 2) the relationship between BP levels and DAT according to APOE genotypes. Models were adjusted by competing risk of death before the onset of DAT. Model performance was assessed by likelihood test. RESULTS The average follow-up time was 5.3 years. DAT incidence was 5.8 per 1000 person-year. APOE-ɛ4 carriers had a higher risk of DAT. In unadjusted analyses, conventional, 24-h, and nighttime systolic BP levels were significantly higher in participants who developed DAT and of APOE-ɛ4 carriers (p < 0.05). After adjustment for competing risks, only higher nighttime systolic BP was associated with DAT incidence, but only among subjects carrying APOE-ɛ4. CONCLUSION In this Hispanic population, both APOE-ɛ4 genotype and assessment of nocturnal systolic BP (rather than diurnal or office BP) were necessary to estimate DAT risk.
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Affiliation(s)
- Jesus D. Melgarejo
- Laboratory of Neuroscience, University of Zulia, Maracaibo, Venezuela
- Research Unit Hypertension and Cardiovascular Epidemiology, Department of Cardiovascular Sciences, KU University of Leuven, Leuven, Belgium
| | | | - Ciro Gaona
- Laboratory of Neuroscience, University of Zulia, Maracaibo, Venezuela
| | - Carlos A. Chavez
- Laboratory of Neuroscience, University of Zulia, Maracaibo, Venezuela
| | - Gustavo E. Calmón
- Instituto de Investigación de Enfermedades Cardiovasculares de la Universidad del Zulia, Facultad de Medicina, Universidad del Zulia, Maracaibo, Venezuela
| | - Eglé R. Silva
- Instituto de Investigación de Enfermedades Cardiovasculares de la Universidad del Zulia, Facultad de Medicina, Universidad del Zulia, Maracaibo, Venezuela
| | - Gabriel A. de Erausquin
- Department of Neurology, and Glenn Biggs Institute for Alzheimer’s and Neurodegenerative Diseases, University of Texas Health Sciences Center at San Antonio, San Antonio, TX, USA
- Alzheimer’s Disease Resource Center for Minority Aging Research, University of Texas Rio Grande Valley, Brownsville, TX, USA
| | - Mario Gil
- Alzheimer’s Disease Resource Center for Minority Aging Research, University of Texas Rio Grande Valley, Brownsville, TX, USA
- Department of Psychological Science and Department of Neurosciences, University of Texas Rio Grande Valley, School of Medicine, Edinburg, TX, USA
| | - Luis J. Mena
- Department of Informatics, Universidad Politécnica de Sinaloa, Mazatlán, México
| | - Joseph D. Terwilliger
- Departments of Psychiatry and Genetics & Development, Columbia University Medical Center, New York, NY, USA
- Sergievsky Center & Department of Epidemiology, Columbia University Medical Center, New York, NY, USA
- Division of Medical Genetics, New York State Psychiatric Institute, New York, NY, USA
- Division of Public Health Genomics, National Institute for Health and Welfare, Helsinki, Finland
| | - Humberto Arboleda
- Neurosciences Research Group, School of Medicine, Nacional University of Colombia, Bogotá, Colombia
- Genetic Institute, National University of Colombia, Bogotá, Colombia
| | - Nikolaos Scarmeas
- Taub Institute for Research on Alzheimer’s Disease and the Aging Brain and Department of Neurology, College of Physicians and Surgeons, Columbia University, New York, NY, USA
- 1st Department of Neurology, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Joseph H. Lee
- Sergievsky Center & Department of Epidemiology, Columbia University Medical Center, New York, NY, USA
- Taub Institute for Research on Alzheimer’s Disease and the Aging Brain and Department of Neurology, College of Physicians and Surgeons, Columbia University, New York, NY, USA
- Department of Epidemiology, School of Public Health, Columbia University, New York, NY, USA
| | - Gladys E. Maestre
- Laboratory of Neuroscience, University of Zulia, Maracaibo, Venezuela
- Alzheimer’s Disease Resource Center for Minority Aging Research, University of Texas Rio Grande Valley, Brownsville, TX, USA
- Department of Neurosciences, University of Texas Rio Grande Valley School of Medicine, Brownsville, TX, USA
- Department of Human Genetics University of Texas Rio Grande Valley School of Medicine, Brownsville, TX, USA
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12
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Mancera-Páez O, Estrada-Orozco K, Mahecha MF, Cruz F, Bonilla-Vargas K, Sandoval N, Guerrero E, Salcedo-Tacuma D, Melgarejo JD, Vega E, Ortega-Rojas J, Román GC, Pardo-Turriago R, Arboleda H. Differential Methylation in APOE (Chr19; Exon Four; from 44,909,188 to 44,909,373/hg38) and Increased Apolipoprotein E Plasma Levels in Subjects with Mild Cognitive Impairment. Int J Mol Sci 2019; 20:ijms20061394. [PMID: 30897703 PMCID: PMC6470812 DOI: 10.3390/ijms20061394] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Revised: 03/04/2019] [Accepted: 03/12/2019] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Biomarkers are essential for identification of individuals at high risk of mild cognitive impairment (MCI) for potential prevention of dementia. We investigated DNA methylation in the APOE gene and apolipoprotein E (ApoE) plasma levels as MCI biomarkers in Colombian subjects with MCI and controls. METHODS In total, 100 participants were included (71% women; average age, 70 years; range, 43⁻91 years). MCI was diagnosed by neuropsychological testing, medical and social history, activities of daily living, cognitive symptoms and neuroimaging. Using multivariate logistic regression models adjusted by age and gender, we examined the risk association of MCI with plasma ApoE and APOE methylation. RESULTS MCI was diagnosed in 41 subjects (average age, 66.5 ± 9.6 years) and compared with 59 controls. Elevated plasma ApoE and APOE methylation of CpGs 165, 190, and 198 were risk factors for MCI (p < 0.05). Higher CpG-227 methylation correlated with lower risk for MCI (p = 0.002). Only CpG-227 was significantly correlated with plasma ApoE levels (correlation coefficient = -0.665; p = 0.008). CONCLUSION Differential APOE methylation and increased plasma ApoE levels were correlated with MCI. These epigenetic patterns require confirmation in larger samples but could potentially be used as biomarkers to identify early stages of MCI.
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Affiliation(s)
- Oscar Mancera-Páez
- Department of Neurology, Faculty of Medicine, Universidad Nacional de Colombia, Bogotá ZC 57, Colombia.
- Neurosciences Research Group, Faculty of Medicine, Universidad Nacional de Colombia, Bogotá ZC 57, Colombia.
- Genetic Institute, Universidad Nacional de Colombia, Bogotá ZC 57, Colombia.
- David Cabello International Alzheimer Disease Scholarship Fund, Houston Methodist Hospital, Houston, TX 77030, USA.
| | - Kelly Estrada-Orozco
- Neurosciences Research Group, Faculty of Medicine, Universidad Nacional de Colombia, Bogotá ZC 57, Colombia.
- Center for Evidence to Implementation, Bogotá ZC 57, Colombia.
- Health Technologies and Politics Assessment Group, Clinical Research Institute, Faculty of Medicine, Universidad Nacional de Colombia, Bogotá ZC 57, Colombia.
| | | | - Francy Cruz
- Neurosciences Research Group, Faculty of Medicine, Universidad Nacional de Colombia, Bogotá ZC 57, Colombia.
- Genetic Institute, Universidad Nacional de Colombia, Bogotá ZC 57, Colombia.
- PhD Program in Clinical and Translational Science, Department of Translational Research and of New Surgical and Medical Technologies, University of Pisa, 56128 Pisa, Italy.
| | - Kely Bonilla-Vargas
- Neurosciences Research Group, Faculty of Medicine, Universidad Nacional de Colombia, Bogotá ZC 57, Colombia.
- Genetic Institute, Universidad Nacional de Colombia, Bogotá ZC 57, Colombia.
| | - Nicolás Sandoval
- Genetic Institute, Universidad Nacional de Colombia, Bogotá ZC 57, Colombia.
| | - Esneyder Guerrero
- Genetic Institute, Universidad Nacional de Colombia, Bogotá ZC 57, Colombia.
| | | | - Jesús D Melgarejo
- Genetic Institute, Universidad Nacional de Colombia, Bogotá ZC 57, Colombia.
- Laboratory of Neuroscience, University of Zulia, Maracaibo 4001, Venezuela.
| | - Edwin Vega
- Neurosciences Research Group, Faculty of Medicine, Universidad Nacional de Colombia, Bogotá ZC 57, Colombia.
| | - Jenny Ortega-Rojas
- Genetic Institute, Universidad Nacional de Colombia, Bogotá ZC 57, Colombia.
| | - Gustavo C Román
- Department of Neurology, Methodist Neurological Institute and the Institute for Academic Medicine Houston Methodist Research Institute, Houston Methodist Hospital, Houston, TX 77030, USA.
- Weill Cornell Medical College, Department of Neurology, Cornell University, New York, NY 10065, USA.
| | - Rodrigo Pardo-Turriago
- Department of Neurology, Faculty of Medicine, Universidad Nacional de Colombia, Bogotá ZC 57, Colombia.
- Neurosciences Research Group, Faculty of Medicine, Universidad Nacional de Colombia, Bogotá ZC 57, Colombia.
- Genetic Institute, Universidad Nacional de Colombia, Bogotá ZC 57, Colombia.
- Hospital Universitario Nacional de Colombia, Bogotá ZC 57, Colombia.
| | - Humberto Arboleda
- Neurosciences Research Group, Faculty of Medicine, Universidad Nacional de Colombia, Bogotá ZC 57, Colombia.
- Genetic Institute, Universidad Nacional de Colombia, Bogotá ZC 57, Colombia.
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13
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Cruz-Sanabria F, Bonilla-Vargas K, Estrada K, Mancera O, Vega E, Guerrero E, Ortega-Rojas J, Mahecha María F, Romero A, Montañés P, Celeita V, Arboleda H, Pardo R. Analysis of cognitive performance and polymorphisms of SORL1, PVRL2, CR1, TOMM40, APOE, PICALM, GWAS_14q, CLU, and BIN1 in patients with mild cognitive impairment and cognitively healthy controls. Neurologia 2018; 36:S0213-4853(18)30198-1. [PMID: 30503753 DOI: 10.1016/j.nrl.2018.07.002] [Citation(s) in RCA: 6] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2018] [Revised: 05/07/2018] [Accepted: 07/28/2018] [Indexed: 11/25/2022] Open
Abstract
INTRODUCTION Alzheimer disease risk polymorphisms have been studied in patients with dementia, but have not yet been explored in mild cognitive impairment (MCI) in our population; nor have they been addressed in relation to cognitive variables, which can be predictive biomarkers of disease. OBJECTIVE To evaluate cognitive performance and presence of polymorphisms of the genes SORL1(rs11218304), PVRL2(rs6859), CR1(rs6656401), TOMM40(rs2075650), APOE (isoforms ɛ2, ɛ3, ɛ4), PICALM(rs3851179), GWAS_14q(rs11622883), BIN1(rs744373), and CLU (rs227959 and rs11136000) in patients with MCI and healthy individuals. METHODOLOGY We performed a cross-sectional, exploratory, descriptive study of a prospective cohort of participants selected by non-probabilistic sampling, evaluated with neurological, neuropsychological, and genetic testing, and classified as cognitively healthy individuals and patients with MCI. Cognition was evaluated with the Neuronorma battery and analysed in relation to the polymorphic variants by means of measures of central tendency, confidence intervals, and nonparametric statistics. RESULTS We found differences in performance in language and memory tasks between carriers and non-carriers of BIN1, CLU, and CR1 variants and a trend toward poor cognitive performance for PICALM, GWAS_14q, SORL1, and PVRL2 variants; the APOE and TOMM40 variants were not associated with poor cognitive performance. DISCUSSION Differences in cognitive performance associated with these polymorphic variants may suggest that the mechanisms regulating these genes could have an effect on cognition in the absence of dementia; however, this study was exploratory and hypotheses based on these results must be explored in larger samples.
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Affiliation(s)
- F Cruz-Sanabria
- Grupo de Neurociencias, Universidad Nacional de Colombia, Bogotá, Colombia; Departamento de Psicología, Universidad Nacional de Colombia, Bogotá, Colombia.
| | - K Bonilla-Vargas
- Grupo de Neurociencias, Universidad Nacional de Colombia, Bogotá, Colombia; Departamento de Psicología, Universidad Nacional de Colombia, Bogotá, Colombia; Unidad de Neurología, Hospital Universitario Nacional, Bogotá, Colombia
| | - K Estrada
- Grupo de Neurociencias, Universidad Nacional de Colombia, Bogotá, Colombia; Instituto de Investigaciones Clínicas, Universidad Nacional de Colombia, Bogotá, Colombia
| | - O Mancera
- Grupo de Neurociencias, Universidad Nacional de Colombia, Bogotá, Colombia; Unidad de Neurología, Hospital Universitario Nacional, Bogotá, Colombia
| | - E Vega
- Grupo de Neurociencias, Universidad Nacional de Colombia, Bogotá, Colombia
| | - E Guerrero
- Grupo de Neurociencias, Universidad Nacional de Colombia, Bogotá, Colombia
| | - J Ortega-Rojas
- Grupo de Neurociencias, Universidad Nacional de Colombia, Bogotá, Colombia
| | - F Mahecha María
- Grupo de Neurociencias, Universidad Nacional de Colombia, Bogotá, Colombia
| | - A Romero
- Grupo de Neurociencias, Universidad Nacional de Colombia, Bogotá, Colombia; Departamento de Psicología, Universidad Nacional de Colombia, Bogotá, Colombia
| | - P Montañés
- Grupo de Neurociencias, Universidad Nacional de Colombia, Bogotá, Colombia; Departamento de Psicología, Universidad Nacional de Colombia, Bogotá, Colombia
| | - V Celeita
- Departamento de Psicología, Universidad Nacional de Colombia, Bogotá, Colombia
| | - H Arboleda
- Grupo de Neurociencias, Universidad Nacional de Colombia, Bogotá, Colombia
| | - R Pardo
- Grupo de Neurociencias, Universidad Nacional de Colombia, Bogotá, Colombia; Unidad de Neurología, Hospital Universitario Nacional, Bogotá, Colombia; Instituto de Investigaciones Clínicas, Universidad Nacional de Colombia, Bogotá, Colombia
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14
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Hernández HG, Sandoval-Hernández AG, Garrido-Gil P, Labandeira-Garcia JL, Zelaya MV, Bayon GF, Fernández AF, Fraga MF, Arboleda G, Arboleda H. Alzheimer's disease DNA methylome of pyramidal layers in frontal cortex: laser-assisted microdissection study. Epigenomics 2018; 10:1365-1382. [PMID: 30324800 DOI: 10.2217/epi-2017-0160] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
OBJECTIVE To study DNA methylation patterns of cortical pyramidal layers susceptible to late-onset Alzheimer's disease (LOAD) neurodegeneration. METHODS Laser-assisted microdissection to select pyramidal layers' cells in frontal cortex of 32 human brains (18 LOAD) and Infinium DNA Methylation 450K analysis were performed to find differential methylated positions and regions, in addition to the corresponding gene set functional enrichment analyses. RESULTS Differential hypermethylation in several genomic regions and genes mainly in HOXA3, GSTP1, CXXC1-3 and BIN1. The functional enrichment analysis revealed genes significantly related to oxidative-stress and synapsis. CONCLUSION The present results indicate the differentially methylated genes related to neural projections, synapsis, oxidative stress and epigenetic regulator genes and represent the first epigenome of cortical pyramidal layers in LOAD.
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Affiliation(s)
- Hernán Guillermo Hernández
- PhD Program in Dentistry, Universidad Santo Tomás, Bucaramanga, Colombia.,Research Unity, Universidad Manuela Beltrán, Bucaramanga, Colombia
| | - Adrián Gabriel Sandoval-Hernández
- Grupo de Neurociencias y muerte Celular, Facultad de Medicina e instituto de Genética, Universidad Nacional de Colombia, Colombia.,Área de Bioquímica, Departamento de Química Universidad Nacional de Colombia, Colombia
| | - Pablo Garrido-Gil
- Laboratory of Neuroanatomy and Experimental Neurology, Department of Morphological Sciences, CIMUS, Faculty of Medicine, University of Santiago de Compostela, 15782 Santiago de Compostela, Spain.,Networking Research Center on Neurodegenerative Diseases (CIBERNED), Madrid, Spain
| | - José Luis Labandeira-Garcia
- Laboratory of Neuroanatomy and Experimental Neurology, Department of Morphological Sciences, CIMUS, Faculty of Medicine, University of Santiago de Compostela, 15782 Santiago de Compostela, Spain.,Networking Research Center on Neurodegenerative Diseases (CIBERNED), Madrid, Spain
| | - María Victoria Zelaya
- Navarrabiomed Brain Bank, Navarra Institute for Health Research, Pamplona, Navarra, Spain
| | - Gustavo F Bayon
- Instituto Universitario de Oncología del Principado de Asturias (IUOPA), Hospital Universitario Central de Asturias (HUCA), Universidad de Oviedo, Principado de Asturias, Spain
| | - Agustín F Fernández
- Fundación para la Investigación Biosanitaria de Asturias (FINBA), Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Principado de Asturias, Spain
| | - Mario F Fraga
- Nanomaterials and Nanotechnology Research Center (CINN-CSIC), Universidad de Oviedo, Principado de Asturias, Spain
| | - Gonzalo Arboleda
- Grupo de Neurociencias y muerte Celular, Facultad de Medicina e instituto de Genética, Universidad Nacional de Colombia, Colombia.,Área de Bioquímica, Departamento de Química Universidad Nacional de Colombia, Colombia
| | - Humberto Arboleda
- Grupo de Neurociencias y muerte Celular, Facultad de Medicina e instituto de Genética, Universidad Nacional de Colombia, Colombia
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15
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Paolacci S, Li Y, Agolini E, Bellacchio E, Arboleda-Bustos CE, Carrero D, Bertola D, Al-Gazali L, Alders M, Altmüller J, Arboleda G, Beleggia F, Bruselles A, Ciolfi A, Gillessen-Kaesbach G, Krieg T, Mohammed S, Müller C, Novelli A, Ortega J, Sandoval A, Velasco G, Yigit G, Arboleda H, Lopez-Otin C, Wollnik B, Tartaglia M, Hennekam RC. Specific combinations of biallelic POLR3A variants cause Wiedemann-Rautenstrauch syndrome. J Med Genet 2018; 55:837-846. [PMID: 30323018 DOI: 10.1136/jmedgenet-2018-105528] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [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: 06/10/2018] [Revised: 08/28/2018] [Accepted: 09/09/2018] [Indexed: 12/13/2022]
Abstract
BACKGROUND Wiedemann-Rautenstrauch syndrome (WRS) is a form of segmental progeria presenting neonatally, characterised by growth retardation, sparse scalp hair, generalised lipodystrophy with characteristic local fatty tissue accumulations and unusual face. We aimed to understand its molecular cause. METHODS We performed exome sequencing in two families, targeted sequencing in 10 other families and performed in silico modelling studies and transcript processing analyses to explore the structural and functional consequences of the identified variants. RESULTS Biallelic POLR3A variants were identified in eight affected individuals and monoallelic variants of the same gene in four other individuals. In the latter, lack of genetic material precluded further analyses. Multiple variants were found to affect POLR3A transcript processing and were mostly located in deep intronic regions, making clinical suspicion fundamental to detection. While biallelic POLR3A variants have been previously reported in 4H syndrome and adolescent-onset progressive spastic ataxia, recurrent haplotypes specifically occurring in individuals with WRS were detected. All WRS-associated POLR3A amino acid changes were predicted to perturb substantially POLR3A structure/function. CONCLUSION Biallelic mutations in POLR3A, which encodes for the largest subunit of the DNA-dependent RNA polymerase III, underlie WRS. No isolated functional sites in POLR3A explain the phenotype variability in POLR3A-related disorders. We suggest that specific combinations of compound heterozygous variants must be present to cause the WRS phenotype. Our findings expand the molecular mechanisms contributing to progeroid disorders.
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Affiliation(s)
- Stefano Paolacci
- Department of Experimental Medicine, Sapienza "University of Rome", Rome, Italy
| | - Yun Li
- Institute of Human Genetics, University Medical Center Göttingen, Göttingen, Germany
| | - Emanuele Agolini
- Genetics and Rare Diseases Research Division, Ospedale Pediatrico Bambino Gesù, Roma, Italy
| | - Emanuele Bellacchio
- Genetics and Rare Diseases Research Division, Ospedale Pediatrico Bambino Gesù, Roma, Italy
| | - Carlos E Arboleda-Bustos
- Neuroscience and Cell Death Group, Faculty of Medicine and Institute of Genetics, Universidad Nacional de Colombia, Bogota, Colombia
| | - Dido Carrero
- Departamento de Bioquímica y Biología Molecular, Instituto Universitario de Oncología (IUOPA), Universidad de Oviedo, and Centro de Investigación Biomédica en Red de Cáncer, Oviedo, Spain
| | - Debora Bertola
- Unidade de Genética do Instituto da Criança, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, e Centro de Estudos sobre o Genoma Humano e Células-Tronco do Instituto de Biociências da Universidade de São Paulo, São Paulo, Brazil
| | - Lihadh Al-Gazali
- Department of Paediatric, College of Medicine and Health Science, United Arab Emirates University, Al Ain, United Arab Emirates
| | - Mariel Alders
- Department of Clinical Genetics, Academic Medical Centre, University of Amsterdam, Amsterdam, The Netherlands
| | - Janine Altmüller
- Cologne Centre for Genomics and Centre for Molecular Medicine Cologne, University of Cologne, Cologne, Germany
| | - Gonzalo Arboleda
- Neuroscience and Cell Death Group, Faculty of Medicine and Institute of Genetics, Universidad Nacional de Colombia, Bogota, Colombia
| | - Filippo Beleggia
- Department of Internal Medicine I, University Hospital Cologne, Cologne, Germany
| | - Alessandro Bruselles
- Dipartimento di Oncologia e Medicina Molecolare, Istituto Superiore di Sanità, Rome, Italy
| | - Andrea Ciolfi
- Genetics and Rare Diseases Research Division, Ospedale Pediatrico Bambino Gesù, Roma, Italy
| | | | - Thomas Krieg
- Department of Dermatology, University Hospital Cologne, Cologne, Germany
| | | | - Christian Müller
- Institute of Human Genetics, University Medical Center Göttingen, Göttingen, Germany
| | - Antonio Novelli
- Genetics and Rare Diseases Research Division, Ospedale Pediatrico Bambino Gesù, Roma, Italy
| | - Jenny Ortega
- Neuroscience and Cell Death Group, Faculty of Medicine and Institute of Genetics, Universidad Nacional de Colombia, Bogota, Colombia
| | - Adrian Sandoval
- Neuroscience and Cell Death Group, Faculty of Medicine and Institute of Genetics, Universidad Nacional de Colombia, Bogota, Colombia
| | - Gloria Velasco
- Departamento de Bioquímica y Biología Molecular, Instituto Universitario de Oncología (IUOPA), Universidad de Oviedo, and Centro de Investigación Biomédica en Red de Cáncer, Oviedo, Spain
| | - Gökhan Yigit
- Institute of Human Genetics, University Medical Center Göttingen, Göttingen, Germany
| | - Humberto Arboleda
- Neuroscience and Cell Death Group, Faculty of Medicine and Institute of Genetics, Universidad Nacional de Colombia, Bogota, Colombia
| | - Carlos Lopez-Otin
- Departamento de Bioquímica y Biología Molecular, Instituto Universitario de Oncología (IUOPA), Universidad de Oviedo, and Centro de Investigación Biomédica en Red de Cáncer, Oviedo, Spain
| | - Bernd Wollnik
- Institute of Human Genetics, University Medical Center Göttingen, Göttingen, Germany
| | - Marco Tartaglia
- Genetics and Rare Diseases Research Division, Ospedale Pediatrico Bambino Gesù, Roma, Italy
| | - Raoul C Hennekam
- Department of Paediatrics, Amsterdam UMC - location AMC, University of Amsterdam, Amsterdam, The Netherlands
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Sandoval-Hernández AG, Hernández HG, Restrepo A, Muñoz JI, Bayon GF, Fernández AF, Fraga MF, Cardona-Gómez GP, Arboleda H, Arboleda GH. Liver X Receptor Agonist Modifies the DNA Methylation Profile of Synapse and Neurogenesis-Related Genes in the Triple Transgenic Mouse Model of Alzheimer's Disease. J Mol Neurosci 2015; 58:243-53. [PMID: 26553261 DOI: 10.1007/s12031-015-0665-8] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2015] [Accepted: 10/08/2015] [Indexed: 12/22/2022]
Abstract
The liver X receptor agonist, GW3965, improves cognition in Alzheimer's disease (AD) mouse models. Here, we determined if short-term GW3965 treatment induces changes in the DNA methylation state of the hippocampus, which are associated with cognitive improvement. Twenty-four-month-old triple-transgenic AD (3xTg-AD) mice were treated with GW3965 (50 mg/kg/day for 6 days). DNA methylation state was examined by modified bisulfite conversion and hybridization on Illumina Infinium Methylation BeadChip 450 k arrays. The Morris water maze was used for behavioral analysis. Our results show in addition to improvement in cognition methylation changes in 39 of 13,715 interrogated probes in treated 3xTg-AD mice compared with untreated 3xTg-AD mice. These changes in methylation probes include 29 gene loci. Importantly, changes in methylation status were mainly from synapse-related genes (SYP, SYN1, and DLG3) and neurogenesis-associated genes (HMGB3 and RBBP7). Thus, our results indicate that liver X receptors (LXR) agonist treatment induces rapid changes in DNA methylation, particularly in loci associated with genes involved in neurogenesis and synaptic function. Our results suggest a new potential mechanism to explain the beneficial effect of GW3965.
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Affiliation(s)
- A G Sandoval-Hernández
- Grupo de Muerte Celular, Instituto de Genética, Universidad Nacional de Colombia, Bogotá, Colombia
| | - H G Hernández
- Grupo de Neurociencias, Universidad Nacional, Bogotá, Colombia
| | - A Restrepo
- Grupo de Muerte Celular, Instituto de Genética, Universidad Nacional de Colombia, Bogotá, Colombia
| | - J I Muñoz
- Área de Neurobiología Celular y Molecular, Grupo de Neurociencias de Antioquia, Universidad de Antioquia, Medellín, Colombia
| | - G F Bayon
- Cancer Epigenetics Laboratory, Institute of Oncology of Asturias (IUOPA), Hospital Universitario Central de Asturias (HUCA), Universidad de Oviedo, Oviedo, Spain
| | - A F Fernández
- Cancer Epigenetics Laboratory, Institute of Oncology of Asturias (IUOPA), Hospital Universitario Central de Asturias (HUCA), Universidad de Oviedo, Oviedo, Spain
| | - M F Fraga
- Cancer Epigenetics Laboratory, Institute of Oncology of Asturias (IUOPA), Hospital Universitario Central de Asturias (HUCA), Universidad de Oviedo, Oviedo, Spain
| | - G P Cardona-Gómez
- Área de Neurobiología Celular y Molecular, Grupo de Neurociencias de Antioquia, Universidad de Antioquia, Medellín, Colombia
| | - H Arboleda
- Grupo de Neurociencias, Universidad Nacional, Bogotá, Colombia
| | - Gonzalo H Arboleda
- Grupo de Muerte Celular, Instituto de Genética, Universidad Nacional de Colombia, Bogotá, Colombia.
- Departamento de Patología, Facultad de Medicina, Universidad Nacional de Colombia, Bogotá, Colombia.
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17
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Duque AF, Lopez JC, Benitez B, Hernandez H, Yunis JJ, Fernandez W, Arboleda H, Arboleda G. Analysis of the LRRK2 p.G2019S mutation in Colombian Parkinson's Disease Patients. Colomb Med (Cali) 2015; 46:117-21. [PMID: 26600626 PMCID: PMC4640433] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
INTRODUCTION Mutations in the leucine-rich repeat kinase 2 gene (LRRK2 or Dardarin) are considered to be a common cause of autosomal dominant and sporadic Parkinson´s disease, but the prevalence of these mutations varies among populations. OBJECTIVE to analyzed the frequency of the LRRK2 p.G2019S mutation (c.6055 G>A transition) in a sample of Colombian patients. METHODS In the present study we have analyzed the frequency of the LRRK2 p.G2019S mutation in 154 patients with familial or sporadic Parkinson Disease, including early and late onset patients, and 162 normal controls. RESULTS Our results show occurrence of this mutation in two cases (2/154, 1.3%) with classical Parkinson´s signs, and one completely asymptomatic control (1/162, 0.6%). CONCLUSION The p.G2019S mutation is not an important causal factor of Parkinson Disease in Colombia having similar frequencies to those reported in other Latin American populations.
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Affiliation(s)
- Andrés Felipe Duque
- Grupo de Neurociencias. Facultad de Medicina, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Juan Carlos Lopez
- Grupo de Neurociencias. Facultad de Medicina, Universidad Nacional de Colombia, Bogotá, Colombia, Departamento de Patología. Facultad de Medicina, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Bruno Benitez
- Grupo de Neurociencias. Facultad de Medicina, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Helena Hernandez
- Grupo de Neurociencias. Facultad de Medicina, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Juan José Yunis
- Grupo de Neurociencias. Facultad de Medicina, Universidad Nacional de Colombia, Bogotá, Colombia, Departamento de Patología. Facultad de Medicina, Universidad Nacional de Colombia, Bogotá, Colombia
| | - William Fernandez
- Grupo de Neurociencias. Facultad de Medicina, Universidad Nacional de Colombia, Bogotá, Colombia,Departamento de Medicina Interna. Facultad de Medicina, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Humberto Arboleda
- Grupo de Neurociencias. Facultad de Medicina, Universidad Nacional de Colombia, Bogotá, Colombia,Departamento de Pediatría. Facultad de Medicina, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Gonzalo Arboleda
- Grupo de Neurociencias. Facultad de Medicina, Universidad Nacional de Colombia, Bogotá, Colombia, Departamento de Patología. Facultad de Medicina, Universidad Nacional de Colombia, Bogotá, Colombia
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18
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Duque AF, Lopez JC, Hernandez H, Benitez B, Yunis JJ, Fernandez W, Arboleda H, Arboleda G. Analysis of the LRRK2 p.G2019S mutation in Colombian Parkinson’s Disease Patients. Colomb Med (Cali) 2015. [DOI: 10.25100/cm.v46i3.1553] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
Introduction: Mutations in the leucine-rich repeat kinase 2 gene (LRRK2 or Dardarin) are considered to be a common cause of autosomal dominant and sporadic Parkinson´s disease, but the prevalence of these mutations varies among populations. Objective: to analysed the frequency of the LRRK2 p.G2019S mutation (c.6055G>A transition) in a sample of Colombian patients. Materials and Methods: In the present study we have analysed the frequency of the LRRK2 p.G2019S mutation in 154 patients with familial or sporadic Parkinson Disease, including early and late onset patients, and 162 normal controls. Results: Our results show occurrence of this mutation in two cases (2/154, 1.3%) with classical Parkinson´s signs, and one completely asymptomatic control (1/162, 0.6%). Conclusion: The p.G2019S mutation is not an important causal factor of Parkinson Disease in Colombia having similar frequencies to those reported in other Latin American populations.
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19
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Jaramillo-Gómez J, Niño A, Arboleda H, Arboleda G. Overexpression of DJ-1 protects against C2-ceramide-induced neuronal death through activation of the PI3K/AKT pathway and inhibition of autophagy. Neurosci Lett 2015. [PMID: 26222260 DOI: 10.1016/j.neulet.2015.07.032] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Parkinson's disease (PD) is the second most frequent neurodegenerative disorder. It is characterized by selective degeneration of dopaminergic neurons in the substantia nigra pars compacta (SNpc). Early-onset familial forms of PD are associated with mutations in several genes, including parkin, pink1 and dj-1. DJ-1 encodes a protein whose neuroprotective function has not been completely clarified yet. We aim to understand the neuroprotective mechanisms of DJ-1, in particular, DJ-1's involvement in the regulation of the PI3K/PTEN/AKT/mTOR pathway and neuronal autophagy in a neurotoxic context induced by C2-ceramide, by using CAD cells, a murine cathecolaminergic cell line. We demonstrated that C2-ceramide induces CAD cell death associated with decreased phosphorylation of PTEN at Ser380, AKT at Ser473, and mTOR at Ser2448; and increased of autophagic flux (increased LC3-II and autophagosome formation). Additionally, we showed that overexpression of DJ-1 protects against C2-ceramide-induced neuronal death and it is not associated with change in the phosphorylation of mTOR at Ser2448. In conclusion, these data suggest that DJ-1 reinforces the PI3K/AKT survival pathway and inhibits autophagy, probably by a mechanism independent from mTOR.
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Affiliation(s)
- Jenny Jaramillo-Gómez
- Neuroscience and Cell Death Group, Faculty of Medicine and Institute of Genetics, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Andrea Niño
- Neuroscience and Cell Death Group, Faculty of Medicine and Institute of Genetics, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Humberto Arboleda
- Neuroscience and Cell Death Group, Faculty of Medicine and Institute of Genetics, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Gonzalo Arboleda
- Neuroscience and Cell Death Group, Faculty of Medicine and Institute of Genetics, Universidad Nacional de Colombia, Bogotá, Colombia.
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20
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Camargo-Sanchez A, Niño CL, Sánchez L, Echeverri S, Gutiérrez DP, Duque AF, Pianeta O, Jaramillo-Gómez JA, Pilonieta MA, Cataño N, Arboleda H, Agostino PV, Alvarez-Baron CP, Vargas R. Theory of Inpatient Circadian Care (TICC): A Proposal for a Middle-Range Theory. Open Nurs J 2015; 9:1-9. [PMID: 25767632 PMCID: PMC4353124 DOI: 10.2174/1874434601509010001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [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: 10/28/2014] [Revised: 12/22/2014] [Accepted: 01/05/2015] [Indexed: 11/30/2022] Open
Abstract
The circadian system controls the daily rhythms of a variety of physiological processes. Most organisms show physiological, metabolic and behavioral rhythms that are coupled to environmental signals. In humans, the main synchronizer is the light/dark cycle, although non-photic cues such as food availability, noise, and work schedules are also involved. In a continuously operating hospital, the lack of rhythmicity in these elements can alter the patient’s biological rhythms and resilience. This paper presents a Theory of Inpatient Circadian Care (TICC) grounded in circadian principles. We conducted a literature search on biological rhythms, chronobiology, nursing care, and middle-range theories in the databases PubMed, SciELO Public Health, and Google Scholar. The search was performed considering a period of 6 decades from 1950 to 2013. Information was analyzed to look for links between chronobiology concepts and characteristics of inpatient care. TICC aims to integrate multidisciplinary knowledge of biomedical sciences and apply it to clinical practice in a formal way. The conceptual points of this theory are supported by abundant literature related to disease and altered biological rhythms. Our theory will be able to enrich current and future professional practice.
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Affiliation(s)
- Andrés Camargo-Sanchez
- Nursing School at the Universidad de Ciencias Aplicadas y Ambientales (U.D.C.A), Bogotá, Colombia
| | - Carmen L Niño
- Nursing School at the Universidad de Ciencias Aplicadas y Ambientales (U.D.C.A), Bogotá, Colombia
| | - Leonardo Sánchez
- Nursing School at the Universidad de Ciencias Aplicadas y Ambientales (U.D.C.A), Bogotá, Colombia
| | - Sonia Echeverri
- Nursing Department at Fundación Santa Fe de Bogotá University Hospital, Bogotá, Colombia
| | - Diana P Gutiérrez
- Division of Internal Medicine at Fundación Santa Fe de Bogotá University Hospital, Bogotá, Colombia
| | | | - Oscar Pianeta
- School of Medicine at the Universidad de Ciencias Aplicadas y Ambientales (U.D.C.A), Bogotá, Colombia
| | - Jenny A Jaramillo-Gómez
- Cell Death Group, School of Medicine and Institute of Genetics at the Universidad Nacional de Colombia, Bogotá, Colombia
| | - Martin A Pilonieta
- School of Medicine at the Universidad Nacional de Colombia, Bogotá, Colombia
| | - Nhora Cataño
- School of Nursing at the Universidad Nacional de Colombia, Bogotá, Colombia
| | - Humberto Arboleda
- Neurosciences Research Group, School of Medicine and Institute of Genetics at the Universidad Nacional de Colombia, Bogotá, Colombia
| | - Patricia V Agostino
- Laboratorio de Cronobiología, Departamento de Ciencia y Tecnología, Universidad Nacional de Quilmes/CONICET, Buenos Aires, Argentina
| | | | - Rafael Vargas
- School of Medicine at the Pontificia Universidad Javeriana, Bogotá, Colombia
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21
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Trujillo‐Rodríguez DM, Sepúlveda‐Falla D, Arboleda H, Glatzel M, Lopera F. P2‐016: NEUROPATHOLOGICAL, NEUROPSYCHOLOGICAL, AND IMAGENOLOGICAL COMPARISON BETWEEN SPORADIC ALZHEIMER'S DISEASE AND PS1‐E280A. Alzheimers Dement 2014. [DOI: 10.1016/j.jalz.2014.05.689] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
| | | | | | | | - Francisco Lopera
- Grupo de Neurociencias, Universidad de AntioquiaMedellinColombia
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22
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Vargas‐Gonzalez JC, Romero Vanegas SJ, Vargas‐Gonzalez JC, Solano E, Moreno S, Arboleda H, Mohs R, Pardo R. P1‐198: ADAPTATION AND VALIDATION OF THE ALZHEIMER'S DISEASE ASSESSMENT SCALE (ADAS‐COG) FOR THE COLOMBIAN POPULATION. Alzheimers Dement 2014. [DOI: 10.1016/j.jalz.2014.05.436] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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23
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Romero‐Vanegas S, Romero‐Vanegas S, Vargas‐Gonzalez JC, Arboleda H, Lopera F, Pardo R. P3‐256: VALIDATION OF THE INECO FRONTAL SCREENING IN A COLOMBIAN POPULATION. Alzheimers Dement 2014. [DOI: 10.1016/j.jalz.2014.05.1348] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
| | | | | | | | - Francisco Lopera
- Grupo de Neurociencias, Universidad de AntioquiaMedellinColombia
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24
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Romero S, Vargas‐Gonzalez JC, Ortega J, Bonilla L, Benavidez M, Arboleda H, Pardo R. P2‐375: A COMPREHENSIVE PROGRAM OF CARE AND SUPPORT TO FAMILIES OF PATIENTS WITH COGNITIVE IMPAIRMENT IN COLOMBIA. Alzheimers Dement 2014. [DOI: 10.1016/j.jalz.2014.05.1055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Sara Romero
- Universidad Nacional de ColombiaBogotaColombia
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25
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Infante Molina CA, Mora Forero LM, Ortega Rojas JC, Arboleda Bustos CE, Fernández W, Arboleda H, Arboleda G. Análisis de mutaciones en los genes PINK1 Y PARKIN en pacientes colombianos con enfermedad de Parkinson. nova 2014. [DOI: 10.22490/24629448.993] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
<p>La enfermedad de Parkinson es un desorden neurodegenerativo complejo, caracterizado por la pérdida progresiva de las neuronas dopaminérgicas de la sustancia nigra pars compacta. Factores tanto ambientales como genéticos se ha determinado que contribuyen a su desarrollo. Mutaciones en los genes PINK1 y PARKIN han sido asociadas con la enfermedad de inicio temprano e historia familiar. El objetivo del presente estudio fue identificar mutaciones en los genes PINK1 (exones 4 y 6) y PARKIN (exones 2 y 7) en 22 pacientes colombianos con enfermedad de Parkinson de inicio temprano y/o antecedentes familiares, mediante amplificación por PCR y secuenciamiento. Las secuencias se compararon con la secuencia consenso de referencia. Se detectó una mutación homocigota de cambio en el marco de lectura (frameshift) c.155delA en el exón 2 del gen PARKIN en una paciente con inicio temprano de la enfermedad e historia familiar. Además se identificó la presencia de un polimorfismo en el intrón 2 del gen PARKIN en siete pacientes, uno de ellos en estado homocigoto. No se encontraron mutaciones en los exones 4 y 6 del gen PINK1. Se encontró una mutación homocigota c.155delA en el exón 2 de PARKIN de una paciente con la enfermedad de Parkinson de inicio temprano con historia familiar. No se encontraron cambios en el gen PINK1.</p>
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26
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Rojas-Charry L, Cookson MR, Niño A, Arboleda H, Arboleda G. Downregulation of Pink1 influences mitochondrial fusion-fission machinery and sensitizes to neurotoxins in dopaminergic cells. Neurotoxicology 2014; 44:140-8. [PMID: 24792327 DOI: 10.1016/j.neuro.2014.04.007] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [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: 02/05/2014] [Revised: 04/11/2014] [Accepted: 04/22/2014] [Indexed: 11/18/2022]
Abstract
It is now well established that mitochondria are organelles that, far from being static, are subject to a constant process of change. This process, which has been called mitochondrial dynamics, includes processes of both fusion and fission. Loss of Pink1 (PTEN-induced putative kinase 1) function is associated with early onset recessive Parkinson's disease and it has been proposed that mitochondrial dynamics might be affected by loss of the mitochondrial kinase. Here, we report the effects of silencing Pink1 on mitochondrial fusion and fission events in dopaminergic neuron cell lines. Cells lacking Pink1 were more sensitive to cell death induced by C2-Ceramide, which inhibits proliferation and induces apoptosis. In the same cell lines, mitochondrial morphology was fragmented and this was enhanced by application of forskolin, which stimulates the cAMP pathway that phosphorylates Drp1 and thereby inactivates it. Cells lacking Pink1 had lower Drp1 and Mfn2 expression. Based on these data, we propose that Pink1 may exert a neuroprotective role in part by limiting mitochondrial fission.
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Affiliation(s)
- Liliana Rojas-Charry
- Grupos de Neurociencias y Muerte Celular, Facultad de Medicina e Instituto de Genética, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Mark R Cookson
- Laboratory of Neurogenetics, National Institute of Aging, National Institutes of Health, Bethesda, MD, USA
| | - Andrea Niño
- Grupos de Neurociencias y Muerte Celular, Facultad de Medicina e Instituto de Genética, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Humberto Arboleda
- Grupos de Neurociencias y Muerte Celular, Facultad de Medicina e Instituto de Genética, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Gonzalo Arboleda
- Grupos de Neurociencias y Muerte Celular, Facultad de Medicina e Instituto de Genética, Universidad Nacional de Colombia, Bogotá, Colombia.
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27
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Perea CS, Niño CL, López-León S, Gutiérrez R, Ojeda D, Arboleda H, Camargo A, Adan A, Forero DA. Study of a Functional Polymorphism in the PER3 Gene and Diurnal Preference in a Colombian Sample. Open Neurol J 2014; 8:7-10. [PMID: 24860629 PMCID: PMC4031641 DOI: 10.2174/1874205x01408010007] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2014] [Revised: 03/24/2014] [Accepted: 03/25/2014] [Indexed: 12/12/2022] Open
Abstract
Polymorphisms in human clock genes have been evaluated as potential factors influencing circadian phenotypes in several populations. There are conflicting results for the association of a VNTR in the PER3 gene and diurnal preference in different studies. The objective of this study was to investigate the association between diurnal preference and daytime somnolence with the PER3 VNTR polymorphism (rs57875989) in healthy subjects from Colombia, a Latin American population.A total of 294 undergraduate university students from Bogotá, Colombia participated in this study. Two validated self-report questionnaires, the Composite Scale of Morningness (CSM) and the Epworth Sleep Scale (ESS) were used to assess diurnal preference and daytime somnolence, respectively. Individuals were genotyped for the PER3 VNTR using conventional PCR. Statistical comparisons were carried out with PLINK and SNPStats programs. The PER3 VNTR polymorphism was not associated with either diurnal preference or daytime somnolence in this population. No significant differences in mean scores for those scales were found between PER3 VNTR genotypes. In addition, there were no differences in allelic or genotypic frequencies between chronotype categories. This is consistent with several negative findings in other populations, indicating that the proposed influence of this polymorphism in diurnal preference, and related endophenotypes of neuropsychiatric importance, needs further clarification. This is the first report of molecular genetics of human circadian phenotypes in a Spanish-speaking population.
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Affiliation(s)
- Claudia S Perea
- Laboratory of NeuroPsychiatric Genetics, Biomedical Sciences Research Group, School of Medicine, Universidad Antonio Nariño. Bogotá, Colombia
| | - Carmen L Niño
- School of Nursing, Universidad de Ciencias Aplicadas y Ambientales UDCA. Bogotá, Colombia
| | - Sandra López-León
- Global Clinical Epidemiology, Novartis Pharmaceuticals Corporation, New Jersey, USA
| | - Rafael Gutiérrez
- Complex Systems Group, Research Center for Basic and Applied Sciences, Universidad Antonio Nariño, Bogotá, Colombia
| | - Diego Ojeda
- Laboratory of NeuroPsychiatric Genetics, Biomedical Sciences Research Group, School of Medicine, Universidad Antonio Nariño. Bogotá, Colombia
| | - Humberto Arboleda
- Neurosciences Research Group, School of Medicine, Universidad Nacional de Colombia. Bogotá, Colombia
| | - Andrés Camargo
- School of Nursing, Universidad de Ciencias Aplicadas y Ambientales UDCA. Bogotá, Colombia
| | - Ana Adan
- Department of Psychiatry and Clinical Psychobiology, University of Barcelona, Barcelona, Spain
| | - Diego A Forero
- Laboratory of NeuroPsychiatric Genetics, Biomedical Sciences Research Group, School of Medicine, Universidad Antonio Nariño. Bogotá, Colombia
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28
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Hernández HG, Mahecha MF, Mejía A, Arboleda H, Forero DA. Global long interspersed nuclear element 1 DNA methylation in a Colombian sample of patients with late-onset Alzheimer's disease. Am J Alzheimers Dis Other Demen 2014; 29:50-3. [PMID: 24164934 PMCID: PMC11008131 DOI: 10.1177/1533317513505132] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Alterations in DNA methylation have implicated as an epigenetic event in the pathogenesis of late-onset Alzheimer's disease (LOAD). The objective of this work was to evaluate global DNA methylation levels for long interspersed nuclear element 1 (LINE-1) repetitive sequences in Colombian patients with LOAD and controls. The LINE-1 DNA methylation levels in peripheral blood samples from 28 Colombian patients with LOAD and 30 healthy participants were assessed using a methylation-sensitive high-resolution melting (MS-HRM) quantitative assay. We did not find differences in LINE-1 methylation levels between patients with Alzheimer's disease (AD; median 76.2%, interquartile range [IQR]: 69.8-81.9) and control participants (median 79.8%, IQR: 73.2-83.8; P = .3). Additional stratified analyses did not show differences in LINE-1 methylation levels for male or female patients versus controls nor for apolipoprotein E4 carriers and noncarriers. This is the first report of LINE-1 methylation levels in patients with LOAD using the cost-effective MS-HRM technique, and this is the first global DNA methylation study in Latin American patients with AD.
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Affiliation(s)
- Hernán G. Hernández
- Laboratory of Neuropsychiatric Genetics, Biomedical Sciences Research Group, School of Medicine, Universidad Antonio Nariño, Bogotá, Colombia
- Neurosciences Research Group, School of Medicine and Institute of Genetics, Universidad Nacional de Colombia, Bogotá, Colombia
- Biomedical Sciences Doctoral Program, School of Medicine, Universidad Nacional de Colombia, Bogotá, Colombia
| | - María F. Mahecha
- Neurosciences Research Group, School of Medicine and Institute of Genetics, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Adriana Mejía
- Neurosciences Research Group, School of Medicine and Institute of Genetics, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Humberto Arboleda
- Neurosciences Research Group, School of Medicine and Institute of Genetics, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Diego A. Forero
- Laboratory of Neuropsychiatric Genetics, Biomedical Sciences Research Group, School of Medicine, Universidad Antonio Nariño, Bogotá, Colombia
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29
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Ojeda DA, Perea CS, Niño CL, Gutiérrez RM, López-León S, Arboleda H, Camargo A, Adan A, Forero DA. A novel association of two non-synonymous polymorphisms in PER2 and PER3 genes with specific diurnal preference subscales. Neurosci Lett 2013; 553:52-6. [DOI: 10.1016/j.neulet.2013.08.016] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2013] [Revised: 07/31/2013] [Accepted: 08/10/2013] [Indexed: 12/18/2022]
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30
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Romero S, Solano E, Moreno S, Arboleda H, Mohs R, Lopera F, Pardo R. O2–04–06: Validation of the Alzheimer's Disease Assessment Scale (ADAS) in Colombia: Preliminary results. Alzheimers Dement 2013. [DOI: 10.1016/j.jalz.2013.04.157] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Affiliation(s)
- Sara Romero
- Universidad Nacional de Colombia Bogota DC Colombia
| | | | | | | | | | - Francisco Lopera
- Grupo de Neurociencias, Universidad de Antioquia Medellin Colombia
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Ojeda DA, Perea CS, Suárez A, Niño CL, Gutiérrez RM, López-León S, Adan A, Arboleda H, Camargo A, Forero DA. Common functional polymorphisms in SLC6A4 and COMT genes are associated with circadian phenotypes in a South American sample. Neurol Sci 2013; 35:41-7. [DOI: 10.1007/s10072-013-1466-x] [Citation(s) in RCA: 21] [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: 01/28/2013] [Accepted: 05/17/2013] [Indexed: 11/30/2022]
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Arboleda G, Morales LC, Quintero L, Arboleda H. Neonatal progeroid syndrome (Wiedemann-Rautenstrauch syndrome): Report of three affected sibs. Am J Med Genet A 2011; 155A:1712-5. [DOI: 10.1002/ajmg.a.34019] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2010] [Accepted: 03/03/2011] [Indexed: 12/27/2022]
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Benitez BA, Forero DA, Arboleda GH, Granados LA, Yunis JJ, Fernandez W, Arboleda H. Exploration of genetic susceptibility factors for Parkinson's disease in a South American sample. J Genet 2011; 89:229-32. [PMID: 20861575 DOI: 10.1007/s12041-010-0030-1] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Bruno A Benitez
- Institute of Genetics, Universidad Nacional de Colombia, Bogotá, Colombia
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Arboleda G, Cárdenas Y, Rodríguez Y, Morales LC, Matheus L, Arboleda H. Differential regulation of AKT, MAPK and GSK3β during C2-ceramide-induced neuronal death. Neurotoxicology 2010; 31:687-93. [PMID: 20696185 DOI: 10.1016/j.neuro.2010.08.001] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2010] [Revised: 05/04/2010] [Accepted: 08/01/2010] [Indexed: 10/19/2022]
Abstract
Evidence has implicated apoptosis as a mechanism underlying cell demise in diverse neurodegenerative diseases including Parkinson's disease (PD). Endogenous toxins and other stress signals activate the sphingomyelin pathway increasing the levels of ceramide, an important regulator of cell death. In the present paper we have analysed the contribution of PI3K/AKT-GSK3β and MAPK (ERK and JNK) pathways to cell death in a catecholaminergic cell line following exposure to C(2)-ceramide. We also explored the potential neuroprotective action of insulin-like growth factor-1 (IGF-1) and neurotrophin-3 (NT3). We demonstrated that C(2)-ceramide-induced cell death is associated to an early decrease in phosphorylation (inhibition) of PI3K/AKT and ERK, followed by phosphorylation (activation) of JNK and de-phosphorylation (activation) of glycogen synthase kinase-3 beta (GSK3β). NT3 and IGF-1 increased survival at early time points, but only IGF-1 is capable to attenuate C(2)-ceramide-mediated neuronal death, and this neuroprotection is associated to strong and permanent activation of AKT and inhibition of GSK3β. In conclusion, C(2)-ceramide initiates a series of events including an early inactivation of PI3K/AKT and ERK pathways followed by activation of JNK and activation of GSK3β and neuronal death, changes that are counteracted by IGF-1.
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Affiliation(s)
- Gonzalo Arboleda
- Grupo de Neurociencias, Facultad de Medicina, Universidad Nacional de Colombia, Bogotá, Colombia.
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Fukumoto N, Fujii T, Combarros O, Kamboh MI, Tsai SJ, Matsushita S, Nacmias B, Comings DE, Arboleda H, Ingelsson M, Hyman BT, Akatsu H, Grupe A, Nishimura AL, Zatz M, Mattila KM, Rinne J, Goto YI, Asada T, Nakamura S, Kunugi H. Sexually dimorphic effect of the Val66Met polymorphism of BDNF on susceptibility to Alzheimer's disease: New data and meta-analysis. Am J Med Genet B Neuropsychiatr Genet 2010; 153B:235-42. [PMID: 19504537 DOI: 10.1002/ajmg.b.30986] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Conflicting results have been reported as to whether genetic variations (Val66Met and C270T) of the brain-derived neurotrophic factor gene (BDNF) confer susceptibility to Alzheimer's disease (AD). We genotyped these polymorphisms in a Japanese sample of 657 patients with AD and 525 controls, and obtained weak evidence of association for Val66Met (P = 0.063), but not for C270T. After stratification by sex, we found a significant allelic association between Val66Met and AD in women (P = 0.017), but not in men. To confirm these observations, we collected genotyping data for each sex from 16 research centers worldwide (4,711 patients and 4,537 controls in total). The meta-analysis revealed that there was a clear sex difference in the allelic association; the Met66 allele confers susceptibility to AD in women (odds ratio = 1.14, 95% CI 1.05-1.24, P = 0.002), but not in men. Our results provide evidence that the Met66 allele of BDNF has a sexually dimorphic effect on susceptibility to AD.
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Affiliation(s)
- Noriko Fukumoto
- Department of Biochemistry and Cellular Biology, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Kodaira, Tokyo, Japan
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Morales LC, Arboleda G, RodrÃguez Y, Forero DA, RamÃrez N, Yunis JJ, Arboleda H. Absence of Lamin A/C gene mutations in four WiedemannâRautenstrauch syndrome patients. Am J Med Genet A 2009; 149A:2695-9. [DOI: 10.1002/ajmg.a.33090] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Forero DA, Arboleda GH, Vasquez R, Arboleda H. Candidate genes involved in neural plasticity and the risk for attention-deficit hyperactivity disorder: a meta-analysis of 8 common variants. J Psychiatry Neurosci 2009; 34:361-6. [PMID: 19721846 PMCID: PMC2732742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/11/2008] [Revised: 02/19/2009] [Accepted: 04/06/2009] [Indexed: 03/01/2023] Open
Abstract
BACKGROUND Attention-deficit hyperactivity disorder (ADHD) is an important psychiatric condition in terms of its prevalence and impact on quality of life. It has one of the highest heritabilities found in psychiatric disorders. A number of association studies exploring several candidate genes in different populations around the world have been carried out. The objective of the present study was to carry out a meta-analysis for 8 common variants located in 5 top candidate genes for ADHD (BDNF, HTR1B, SLC6A2, SLC6A4 and SNAP25); these genes are known to be involved in synaptic transmission and plasticity. METHODS We performed a search for published genetic association studies that analyzed the candidate polymorphisms in different populations, and we applied state-of-the-art meta-analytical procedures to obtain pooled odds ratios (ORs) and to evaluate potential basis of heterogeneity. We included 75 genetic association studies in these meta-analyses. RESULTS A major part of the previously postulated associations were nonconsistent in the pooled odds ratios. We observed a weak significant association with a single nucleotide polymorphism (SNP) located in the 3' UTR region of the SNAP25 gene (rs3746544, T allele, OR 1.15, 95% confidence interval 1.01-1.31, p = 0.028, I(2) = 0%). In addition to the low coverage of genetic variability given by these variants, phenotypic heterogeneity between samples (ADHD subtypes, comorbidities) and genetic background may explain these differences. LIMITATIONS Limitations of our study include the retrospective nature of our meta-analysis with the incorporation of study-level data from published articles. CONCLUSION To our knowledge, the present study is the largest meta-analysis carried out for ADHD genetics; previously proposed cumulative associations with common polymorphisms in SLC6A4 and HTR1B genes were not supported. We identified a weak consistent association with a common SNP in the SNAP25 gene, a molecule that is known to be central for synaptic transmission and plasticity mechanisms.
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Affiliation(s)
| | | | | | - Humberto Arboleda
- Correspondence to: Drs. H. Arboleda and D.A. Forero, Instituto de Gentética, Universidad Nacional de Colombia, Ciudad Universitaria, Bogotá, Colombia; fax 57 1 3685532;
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Arboleda G, Morales LC, Benítez B, Arboleda H. Regulation of ceramide-induced neuronal death: cell metabolism meets neurodegeneration. ACTA ACUST UNITED AC 2008; 59:333-46. [PMID: 18996148 DOI: 10.1016/j.brainresrev.2008.10.001] [Citation(s) in RCA: 73] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2008] [Revised: 10/09/2008] [Accepted: 10/13/2008] [Indexed: 12/14/2022]
Abstract
The present review explores the role of ceramides in neuronal apoptosis, as well as the recent discovery of the signaling pathways involved in this process placing particular emphasis on the correlation between cellular metabolism and neuronal death. Endogenous levels of ceramides are increased following various pro-apoptotic stimuli which have been identified as potential causes of chronic and acute neurodegenerative diseases. Ceramides induce changes in multiple enzymes and cell signaling components. The early inhibition of the neuronal survival pathway regulated by phosphatidil-inositol-3-kinase/protein kinase B or AKT mediated by ceramide may be a relevant early event in the decision of neuronal survival/death. It may perturb several molecular and metabolic functions. In particular it might decrease glycolysis through rapid modulation of hexokinase activity. This would in turn generate limited amounts of mitochondrial substrates leading to mitochondrial dysfunction and neuronal apoptosis. Subtle and early metabolic alterations caused by inhibition of the PI3K/AKT pathway mediated by ceramide may potentially work with genes associated with neurodegenerative diseases such as Parkinson's and Alzheimer's disease. Together they may be determinant steps in downstream events leading to neuronal apoptosis. Therefore, reinforcement of the PI3K/AKT pathway could constitute an important neuroprotective strategy.
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Affiliation(s)
- Gonzalo Arboleda
- Grupo de Neurociencias, Departamento de Patología, Facultad de Medicina, Universidad Nacional de Colombia, Bogotá, Colombia.
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Arboleda G, Ramírez N, Arboleda H. The neonatal progeroid syndrome (Wiedemann-Rautenstrauch): a model for the study of human aging? Exp Gerontol 2007; 42:939-43. [PMID: 17728088 DOI: 10.1016/j.exger.2007.07.004] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2007] [Revised: 06/22/2007] [Accepted: 07/03/2007] [Indexed: 01/09/2023]
Abstract
The Wiedemann-Rautenstrauch syndrome (WRS) characterises a premature aging syndrome in which several features of human aging are apparent at birth therefore allowing their grouping as a neonatal progeroid condition. This differentiates WRS from other progeroid entities such as Hutchinson-Gilford progeria syndrome (HGPS) in which characteristics of premature aging become apparent some time after birth. The etiology of WRS remains unknown. Some studies have observed an autosomal recessive mode of inheritance. Several studies analysing telomere length and lamin A gene have not revealed any alterations. However, mutations in LMNA have been reported in several other atypical progeroid syndromes. Based on these observations, several hypothesis could be withdrawn concerning the etiology of WRS. The study of genes associated with lamin A metabolism, such as Zmpste24, and the metabolic pathways associated with insulin, such as protein kinase B or AKT, are of particular interest. We believe that WRS characteristics indicate that discovery of the gene and the metabolic pathway associated with this syndrome will most likely lead to new knowledge about the physiopathology of human aging.
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Affiliation(s)
- Gonzalo Arboleda
- Grupo de Neurociencias, Facultad de Medicina, Universidad Nacional de Colombia, Bogotá, Colombia.
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Ramírez NJ, Belalcázar HM, Yunis JJ, Quintero LN, Arboleda GH, Arboleda H. Parental origin, nondisjunction, and recombination of the extra chromosome 21 in Down syndrome: a study in a sample of the Colombian population. Biomedica 2007; 27:141-148. [PMID: 17546231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
INTRODUCTION Free trisomy 21 is responsible for 95% of Down syndrome cases. Advanced maternal age and susceptible recombination patterns are recognized risk factors associated to Down syndrome. Maternal origin of trisomy occurs in approximately 90% of cases; paternal and mitotic origin share the remaining 10%. However, the recombination events that serve as a risk factors for trisomy 21 have not been carefully characterized. OBJECTIVE To analyze and validate observations in a sample of Colombian trysonomy 21 cases. MATERIALS AND METHODS Twenty-two Colombian families were selected, each with one affected Down syndrome (free trisomy 21) child. Microsatellite polymorphisms were used as DNA markers to determine the parental/stage origin of non-disjunction and recombination events. Non-parametric tests were used to compare our results with those reported. Multiple correspondence analysis was used to outline different groups and their associations. RESULTS Distribution of trisomy 21 was 90.9% maternal, 4.5% paternal and 4.5% from mitotic origin, similar to distributions reported previously. However, we found differences in the frequency of maternal meiotic stage errors between the present study (46.1% meiosis I and 53.9% meiosis II) compared to those reported previously (70% meiosis I and 30% meiosis II). Multiple correspondence analyses showed association of either local recombination events or absence of recombination with specific non-disjunction stages. CONCLUSIONS Recombination patterns found in this study support the hypothesis that susceptible chiasmate configurations are associated to maternal meiosis I and meiosis II errors. Non-disjunction frequencies between maternal meiotic stages need to be clarified in our population.
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Affiliation(s)
- Nelson Javier Ramírez
- Grupo de Neurociencias, Instituto de Genética, Universidad Nacional de Colombia, Bogotá D.C., Colombia
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Forero DA, Pinzón J, Arboleda GH, Yunis JJ, Alvarez C, Cataño N, Arboleda H. Analysis of common polymorphisms in angiotensin-converting enzyme and apolipoprotein e genes and human longevity in Colombia. Arch Med Res 2006; 37:890-4. [PMID: 16971231 DOI: 10.1016/j.arcmed.2006.04.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2006] [Accepted: 04/07/2006] [Indexed: 10/24/2022]
Abstract
BACKGROUND Genetic analysis of human longevity may be useful for the understanding of molecular mechanisms implicated in age-related diseases. The molecular genetics of human longevity is largely unexplored in Latin American populations and other developing countries. METHODS To explore the possibility of an association of common polymorphisms in two candidate genes and longevity in Colombia, we analyzed two polymorphisms in apolipoprotein E (APOE) and angiotensin-converting enzyme (ACE) genes in a sample of 538 Colombian subjects (18-106 years), using previously validated PCR-based methodologies. RESULTS We found a significant decrease in ACE DD genotype (24 vs. 16%) between young and old subject groups (mean age: 45 vs. 77 years) (p = 0.03). The ACE DD genotype and D allele decrease was significant only in women. There were no differences for APOE polymorphism between young and old subjects. CONCLUSIONS Our results are compatible with the expected age-related decrease of ACE DD genotype. Future studies examining functional single nucleotide polymorphisms (SNPs) in the ACE gene and its correlation with serum ACE activity in the older subjects and their younger relatives in this sample are warranted.
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Affiliation(s)
- Diego A Forero
- Grupo de Neurociencias, Facultad de Medicina e Instituto de Genética, Universidad Nacional de Colombia, Bogotá, Colombia
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Forero DA, Casadesus G, Perry G, Arboleda H. Synaptic dysfunction and oxidative stress in Alzheimer's disease: emerging mechanisms. J Cell Mol Med 2006; 10:796-805. [PMID: 16989739 PMCID: PMC3933161 DOI: 10.1111/j.1582-4934.2006.tb00439.x] [Citation(s) in RCA: 65] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2006] [Accepted: 03/31/2006] [Indexed: 11/29/2022] Open
Abstract
In this paper, we review experimental advances in molecular neurobiology of Alzheimer's disease (AD), with special emphasis on analysis of neural function of proteins involved in AD pathogenesis, their relation with several signaling pathways and with oxidative stress in neurons. Molecular genetic studies have found that mutations in APP, PS1 and PS2 genes and polymorphisms in APOE gene are implicated in AD pathogenesis. Recent studies show that these proteins, in addition to its role in beta-amyloid processing, are involved in several neuroplasticity-signaling pathways (NMDA-PKA-CREB-BDNF, reelin, wingless, notch, among others). Genomic and proteomic studies show early synaptic protein alterations in AD brains and animal models. DNA damage caused by oxidative stress is not completely repaired in neurons and is accumulated in the genes of synaptic proteins. Several functional SNPs in synaptic genes may be interesting candidates to explore in AD as genetic correlates of this synaptopathy in a "synaptogenomics" approach. Thus, experimental evidence shows that proteins implicated in AD pathogenesis have differential roles in several signaling pathways related to neuromodulation and neurotransmission in adult and developing brain. Genomic and proteomic studies support these results. We suggest that oxidative stress effects on DNA and inherited variations in synaptic genes may explain in part the synaptic dysfunction seen in AD.
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Affiliation(s)
- D A Forero
- Grupo de Neurociencias, Facultad de Medicina e Instituto de Genética, Universidad Nacional de ColombiaBogotá, Colombia
- Current Affiliation: Applied Molecular Genomics Group, Department of Molecular Genetics, Flanders Interuniversity Institute for Biotechnology, University of AntwerpAntwerp, Belgium
| | - G Casadesus
- Institute of Pathology, Case Western Reserve UniversityCleveland, OH, USA
| | - G Perry
- Institute of Pathology, Case Western Reserve UniversityCleveland, OH, USA
| | - H Arboleda
- Grupo de Neurociencias, Facultad de Medicina e Instituto de Genética, Universidad Nacional de ColombiaBogotá, Colombia
- Departamento de Pediatria, Facultad de Medicina, Universidad Nacional de ColombiaBogotá, Colombia
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Forero DA, Benítez B, Arboleda G, Yunis JJ, Pardo R, Arboleda H. Analysis of functional polymorphisms in three synaptic plasticity-related genes (BDNF, COMT AND UCHL1) in Alzheimer's disease in Colombia. Neurosci Res 2006; 55:334-41. [PMID: 16698101 DOI: 10.1016/j.neures.2006.04.006] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2006] [Revised: 04/03/2006] [Accepted: 04/05/2006] [Indexed: 12/14/2022]
Abstract
In recent years, it has been proposed that synaptic dysfunction may be an important etiological factor for Alzheimer's disease (AD). This hypothesis has important implications for the analysis of AD genetic risk in case-control studies. In the present work, we analyzed common functional polymorphisms in three synaptic plasticity-related genes (brain-derived neurotrophic factor, BDNF Val66Met; catechol-O-methyl transferase, COMT Val158; ubiquitin carboxyl-terminal hydroxylase, UCHL1 S18Y) in a sample of 102 AD cases and 168 age and sex matched controls living in Bogotá, Colombia. There was not association between UCHL1 polymorphism and AD in our sample. We have found an initial association with BDNF polymorphism in familial cases and with COMT polymorphism in male and sporadic patients. These initial associations were lost after Bonferroni correction for multiple testing. Unadjusted results may be compatible with the expected functional effect of variations in these genes on pathological memory and cognitive dysfunction, as has been implicated in animal and cell models and also from neuropsychological analysis of normal subjects carriers of the AD associated genotypes. An exploration of functional variants in these and in other synaptic plasticity-related genes (a synaptogenomics approach) in independent larger samples will be important to discover new genes associated with AD.
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Affiliation(s)
- Diego A Forero
- Grupo de Neurociencias, Facultad de Medicina e Instituto de Genética, Universidad Nacional de Colombia, Bogotá, Colombia
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Forero DA, Arboleda G, Yunis JJ, Pardo R, Arboleda H. Association study of polymorphisms in LRP1, tau and 5-HTT genes and Alzheimer’s disease in a sample of Colombian patients. J Neural Transm (Vienna) 2005; 113:1253-62. [PMID: 16362633 DOI: 10.1007/s00702-005-0388-z] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2005] [Accepted: 09/10/2005] [Indexed: 10/25/2022]
Abstract
Analysis of genetic susceptibility factors for Alzheimer's disease (AD) in populations with different genetic and environmental background may be useful to understand AD etiology. There are few genetic association studies of AD in Latin America. In the present work, we analyzed polymorphisms in 3 candidate genes; the LDL receptor related protein-1, the microtubule-associated protein Tau and the serotonin transporter genes in a sample of 106 Colombian AD patients and 97 control subjects. We did not find a significant allelic or genotypic association with any of the three polymorphisms analyzed using different statistical analysis, including a neural network model or different sample stratifications. To date, APOE polymorphisms are the only genetic risk factors identified for AD in the Colombian population. It may be factible that future combination of high-throughput genotyping platforms and multivariate analysis models may lead to the identification of other genetic susceptibility factors for AD in the Colombian population.
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Affiliation(s)
- D A Forero
- Grupo de Neurociencias, Facultad de Medicina e Instituto de Genética, Universidad Nacional de Colombia, Bogotá, Colombia
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Arboleda H, Arboleda G. Follow-up study of Wiedemann-Rautenstrauch syndrome: Long-term survival and comparison with Rautenstrauch's patient “G”. ACTA ACUST UNITED AC 2005; 73:562-8. [PMID: 16007586 DOI: 10.1002/bdra.20166] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
BACKGROUND Wiedemann-Rautenstrauch syndrome (WRS) characterizes a neonatal progeroid entity. In the last 30 years, 28 cases have been reported. In most cases of WRS, survival is short and long-term studies are impossible. CASE In the present report, we describe a patient with WRS followed for 17 years at the Instituto de Genética, Universidad Nacional de Colombia; this is an exceptional survival period for a person with WRS. The information collected through 17 years for the present patient provides new knowledge about the natural evolution of this syndrome. New clinical and laboratory characteristics are compared with those reported for Rautenstrauch's patient "G." CONCLUSIONS Our results confirm the variability of this syndrome, especially at the neurological level. However, many etiological and pathological aspects of this syndrome remain unknown.
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Affiliation(s)
- Humberto Arboleda
- Departamento de Pediatría, Facultad de Medicina and Instituto de Genética, Universidad Nacional de Colombia, Bogotá, Colombia.
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Arboleda H, Benitez B, Forero D, Alvarez C, Belalcazar H, Fernandez W, Arango G, Bernal A, Camelo D, Arboleda G, Quintero L, Yunis J. P4-156 Analysis of polymorphisms in APOE, ACE, alpha-synuclein and tau genes and screening of mutations in the parkin gene in Parkinson's disease in Colombia. Neurobiol Aging 2004. [DOI: 10.1016/s0197-4580(04)81714-7] [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: 10/26/2022]
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Arboleda H, Duarte N, Lozano J, Pena M, Camelo D, Yunis JJ, Arboleda G, Fernandez W, Pardo R. P4-146 Dementia syndrome with predominant fronto-temporal dysfunction in a Colombian family with E280A presenilin-1 mutation. Neurobiol Aging 2004. [DOI: 10.1016/s0197-4580(04)81704-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Arboleda H, Duarte N, Lozano J, Pena M, Dalila C, Yunis J, Arboleda G, Pardo R. P4-052 Screening of mutations in exons 5 and 8 of the presenilin-1 gene in a Colombian sample with early onset Alzheimer's disease. Neurobiol Aging 2004. [DOI: 10.1016/s0197-4580(04)81610-5] [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: 10/26/2022]
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Camelo D, Arboleda G, Yunis JJ, Pardo R, Arango G, Solano E, López L, Hedmont D, Arboleda H. Angiotensin-converting enzyme and alpha-2-macroglobulin gene polymorphisms are not associated with Alzheimer's disease in Colombian patients. J Neurol Sci 2004; 218:47-51. [PMID: 14759632 DOI: 10.1016/j.jns.2003.10.008] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2003] [Revised: 10/20/2003] [Accepted: 10/21/2003] [Indexed: 10/26/2022]
Abstract
Polymorphisms in alpha-2-macroglobulin (A2M) and angiotensin-converting enzyme (ACE) genes have been considered as risk factors for Alzheimer's disease (AD) independently of the risk conferred by the apolipoprotein E sigma4 allele (APOEsigma4) in diverse populations. In the present study, we have analysed the distribution of genotypes and alleles of the insertion/deletion (I/D) polymorphisms of ACE and A2M in 83 AD patients and 69 normal controls in Colombia. Our results showed that there is no association between the I/D polymorphisms of ACE and A2M with AD (P = 0.788 and P = 0.538, respectively). Using logistic regression and multiple correlation analysis (MCA), we confirmed that the main risk factor associated and consistently grouped with AD patients in this population is APOE4, but this association was not observed with alleles and genotypes of ACE and A2M.
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Affiliation(s)
- Dalila Camelo
- Instituto de Genética, Universidad Nacional de Colombia, Calle 53 Carrera 30 Ciudad Universitaria, Bogotá, Colombia
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Parra-Bonilla G, Arboleda G, Yunis J, Solano E, Pardo R, Arango G, Hedmont D, Arboleda H. Haplogroup analysis of the risk associated with APOE promoter polymorphisms (-219T/G, -491A/T and -427T/C) in Colombian Alzheimer's disease patients. Neurosci Lett 2003; 349:159-62. [PMID: 12951193 DOI: 10.1016/s0304-3940(03)00816-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Results analyzing the association between polymorphisms in the promoter region of the apolipoprotein E (APOE) gene and Alzheimer's disease (AD) are contradictory. We studied the association of three polymorphisms in the APOE promoter (-219T/G, -491A/T and -427T/C) with AD in a sample of the Colombian population. The polymorphism -491A/T confers increased risk for AD associated with AA genotype independent of APOEe4 allele (odds ratio (OR): 2.64) and more pronounced in men (OR: 6.07). Genotypes TT and TG of -219T/G showed a significant association with AD, but this was lost in an adjusted model. We did not find any association with -427T/C polymorphism. Using a haplogroup analysis of the promoter polymorphisms, we further confirmed their independent contribution as genetic risk factors for AD.
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