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Rodríguez-Fernández B, Sánchez-Benavides G, Genius P, Minguillon C, Fauria K, De Vivo I, Navarro A, Molinuevo JL, Gispert JD, Sala-Vila A, Vilor-Tejedor N, Crous-Bou M. Association between telomere length and cognitive function among cognitively unimpaired individuals at risk of Alzheimer's disease. Neurobiol Aging 2024; 141:140-150. [PMID: 38936230 DOI: 10.1016/j.neurobiolaging.2024.05.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 05/23/2024] [Accepted: 05/24/2024] [Indexed: 06/29/2024]
Abstract
INTRODUCTION Leukocyte telomere length (LTL) is an objective biomarker of biological aging, and it is proposed to play a crucial role in Alzheimer's disease (AD) risk. We aimed at evaluating the cross-sectional association between LTL and cognitive performance in middle-aged cognitively unimpaired individuals at increased risk of AD. METHODS A total of 1520 participants from the ALFA cohort were included. Relative telomere length was measured in leukocytes through qPCR. LTL was residualized against age and sex, and associations with cognitive performance were assessed in short and long groups based on residualized LTL (rLTL). Interactions with sex and genetic risk of AD were tested. RESULTS Non-linear associations were found between LTL and episodic memory (EM). Better EM was associated with longer rLTL among women in the short rLTL group. DISCUSSION Results suggest a potential role of telomeres in the cognitive aging process with sex-specific patterns.
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Affiliation(s)
- Blanca Rodríguez-Fernández
- Barcelonaβeta Brain Research Center (BBRC), Pasqual Maragall Foundation, C/ de Wellington, 30, Barcelona 08005, Spain; IMIM - Hospital del Mar Medical Research Institute, C/ del Dr. Aiguader, 88, 2nd floor, Campus Mar, Barcelona 08003, Spain; Centre for Genomic Regulation (CRG), The Barcelona Institute for Science and Technology, C/ del Dr. Aiguader, 88, Barcelona 08003, Spain; Universitat Autònoma de Barcelona, 08193, Cerdanyola del Vallès, Barcelona, Spain
| | - Gonzalo Sánchez-Benavides
- Barcelonaβeta Brain Research Center (BBRC), Pasqual Maragall Foundation, C/ de Wellington, 30, Barcelona 08005, Spain; IMIM - Hospital del Mar Medical Research Institute, C/ del Dr. Aiguader, 88, 2nd floor, Campus Mar, Barcelona 08003, Spain; Centro de Investigación Biomédica en Red de Fragilidad y Envejecimiento Saludable (CIBER-FES). Instituto de Salud Carlos III, C/ Monforte de Lemos 3-5. Pabellón 11, Planta 0, Madrid 28029, Spain
| | - Patricia Genius
- Barcelonaβeta Brain Research Center (BBRC), Pasqual Maragall Foundation, C/ de Wellington, 30, Barcelona 08005, Spain; IMIM - Hospital del Mar Medical Research Institute, C/ del Dr. Aiguader, 88, 2nd floor, Campus Mar, Barcelona 08003, Spain; Centre for Genomic Regulation (CRG), The Barcelona Institute for Science and Technology, C/ del Dr. Aiguader, 88, Barcelona 08003, Spain
| | - Carolina Minguillon
- Barcelonaβeta Brain Research Center (BBRC), Pasqual Maragall Foundation, C/ de Wellington, 30, Barcelona 08005, Spain; IMIM - Hospital del Mar Medical Research Institute, C/ del Dr. Aiguader, 88, 2nd floor, Campus Mar, Barcelona 08003, Spain; Centro de Investigación Biomédica en Red de Fragilidad y Envejecimiento Saludable (CIBER-FES). Instituto de Salud Carlos III, C/ Monforte de Lemos 3-5. Pabellón 11, Planta 0, Madrid 28029, Spain
| | - Karine Fauria
- Barcelonaβeta Brain Research Center (BBRC), Pasqual Maragall Foundation, C/ de Wellington, 30, Barcelona 08005, Spain; Centro de Investigación Biomédica en Red de Fragilidad y Envejecimiento Saludable (CIBER-FES). Instituto de Salud Carlos III, C/ Monforte de Lemos 3-5. Pabellón 11, Planta 0, Madrid 28029, Spain
| | - Immaculata De Vivo
- Department of Epidemiology, Harvard T.H. Chan School of Public Health. School of Public Health 2, 677 Huntington Ave, Boston, MA 02115, USA; Channing Division of Network Medicine, Harvard Medical School, Boston, MA 02115, USA
| | - Arcadi Navarro
- Barcelonaβeta Brain Research Center (BBRC), Pasqual Maragall Foundation, C/ de Wellington, 30, Barcelona 08005, Spain; Centre for Genomic Regulation (CRG), The Barcelona Institute for Science and Technology, C/ del Dr. Aiguader, 88, Barcelona 08003, Spain; Institute of Evolutionary Biology (CSIC-UPF), Department of Experimental and Health Sciences, Universitat Pompeu Fabra, Pg. Marítim de la Barceloneta, 37, Barcelona 08003, Spain; Institució Catalana de Recerca i Estudis Avançats (ICREA), Barcelona, Spain
| | - Jose Luis Molinuevo
- Barcelonaβeta Brain Research Center (BBRC), Pasqual Maragall Foundation, C/ de Wellington, 30, Barcelona 08005, Spain
| | - Juan Domingo Gispert
- Barcelonaβeta Brain Research Center (BBRC), Pasqual Maragall Foundation, C/ de Wellington, 30, Barcelona 08005, Spain; IMIM - Hospital del Mar Medical Research Institute, C/ del Dr. Aiguader, 88, 2nd floor, Campus Mar, Barcelona 08003, Spain; Centro de Investigación Biomédica en Red Bioingeniería, Biomateriales y Nanomedicina. Instituto de Salud Carlos III, C/ Monforte de Lemos 3-5. Pabellón 11, Planta 0, Madrid 28029, Spain; Centro Nacional de Investigaciones Cardiovasculares (CNIC), C. de Melchor Fernández Almagro, 3, Madrid 28029, Spain
| | - Aleix Sala-Vila
- Barcelonaβeta Brain Research Center (BBRC), Pasqual Maragall Foundation, C/ de Wellington, 30, Barcelona 08005, Spain; IMIM - Hospital del Mar Medical Research Institute, C/ del Dr. Aiguader, 88, 2nd floor, Campus Mar, Barcelona 08003, Spain
| | - Natalia Vilor-Tejedor
- Barcelonaβeta Brain Research Center (BBRC), Pasqual Maragall Foundation, C/ de Wellington, 30, Barcelona 08005, Spain; IMIM - Hospital del Mar Medical Research Institute, C/ del Dr. Aiguader, 88, 2nd floor, Campus Mar, Barcelona 08003, Spain; Centre for Genomic Regulation (CRG), The Barcelona Institute for Science and Technology, C/ del Dr. Aiguader, 88, Barcelona 08003, Spain; Department of Human Genetics, Radboud University Medical Center, Nijmegen, the Netherlands; Universitat Pompeu Fabra, C/ de Ramon Trias Fargas, 25, 27, Barcelona 08005, Spain.
| | - Marta Crous-Bou
- Barcelonaβeta Brain Research Center (BBRC), Pasqual Maragall Foundation, C/ de Wellington, 30, Barcelona 08005, Spain; Centro de Investigación Biomédica en Red de Fragilidad y Envejecimiento Saludable (CIBER-FES). Instituto de Salud Carlos III, C/ Monforte de Lemos 3-5. Pabellón 11, Planta 0, Madrid 28029, Spain; Department of Human Genetics, Radboud University Medical Center, Nijmegen, the Netherlands; Catalan Institute of Oncology (ICO)-Bellvitge Biomedical Research Center (IDIBELL), Hospital Duran i Reynals, Avinguda de la Granvia de l'Hospitalet, 199-203, L'Hospitalet de Llobregat, Barcelona 08908, Spain.
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Storci G, Bonifazi F, Garagnani P, Olivieri F, Bonafè M. The role of extracellular DNA in COVID-19: Clues from inflamm-aging. Ageing Res Rev 2021; 66:101234. [PMID: 33321254 PMCID: PMC7833688 DOI: 10.1016/j.arr.2020.101234] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 12/03/2020] [Accepted: 12/07/2020] [Indexed: 12/12/2022]
Abstract
Epidemiological data convey severe prognosis and high mortality rate for COVID-19 in elderly men affected by age-related diseases. These subjects develop local and systemic hyper-inflammation, which are associated with thrombotic complications and multi-organ failure. Therefore, understanding SARS-CoV-2 induced hyper-inflammation in elderly men is a pressing need. Here we focus on the role of extracellular DNA, mainly mitochondrial DNA (mtDNA) and telomeric DNA (telDNA) in the modulation of systemic inflammation in these subjects. In particular, extracellular mtDNA is regarded as a powerful trigger of the inflammatory response. On the contrary, extracellular telDNA pool is estimated to be capable of inhibiting a variety of inflammatory pathways. In turn, we underpin that telDNA reservoir is progressively depleted during aging, and that it is scarcer in men than in women. We propose that an increase in extracellular mtDNA, concomitant with the reduction of the anti-inflammatory telDNA reservoir may explain hyper-inflammation in elderly male affected by COVID-19. This scenario is reminiscent of inflamm-aging, the portmanteau word that depicts how aging and aging related diseases are intimately linked to inflammation.
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Affiliation(s)
- Gianluca Storci
- Department of Experimental and Diagnostic Medicine, University of Bologna, Italy.
| | | | - Paolo Garagnani
- Department of Experimental and Diagnostic Medicine, University of Bologna, Italy; Clinical Chemistry, Department of Laboratory Medicine, Karolinska Institutet at Huddinge University Hospital, Stockholm, Sweden
| | - Fabiola Olivieri
- Department of Clinical and Molecular Sciences (DISCLIMO), Università Politecnica delle Marche, Ancona, Italy; Center of Clinical Pathology and Regenerative Therapy, IRCCS INRCA, Ancona, Italy
| | - Massimiliano Bonafè
- Department of Experimental and Diagnostic Medicine, University of Bologna, Italy.
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Evans JR, Torres-Pérez JV, Miletto Petrazzini ME, Riley R, Brennan CH. Stress reactivity elicits a tissue-specific reduction in telomere length in aging zebrafish (Danio rerio). Sci Rep 2021; 11:339. [PMID: 33431974 PMCID: PMC7801459 DOI: 10.1038/s41598-020-79615-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Accepted: 11/26/2020] [Indexed: 01/29/2023] Open
Abstract
Individual differences in personality are associated with variation in healthy aging. Health behaviours are often cited as the likely explanation for this association; however, an underlying biological mechanism may also exist. Accelerated leukocyte telomere shortening is implicated in multiple age-related diseases and is associated with chronic activation of the hypothalamus-pituitary-adrenal (HPA) axis, providing a link between stress-related personality differences and adverse health outcomes. However, the effects of the HPA axis are tissue specific. Thus, leukocyte telomere length may not accurately reflect telomere length in disease-relevant tissues. Here, we examined the correlation between stress reactivity and telomere length in heart and brain tissue in young (6-9 month) and aging (18 month) zebrafish. Stress reactivity was assessed by tank diving and through gene expression. Telomere length was assessed using quantitative PCR. We show that aging zebrafish have shorter telomeres in both heart and brain. Telomere length was inversely related to stress reactivity in heart but not brain of aging individuals. These data support the hypotheses that an anxious predisposition contributes to accelerated telomere shortening in heart tissue, which may have important implications for our understanding of age-related heart disease, and that stress reactivity contributes to age-related telomere shortening in a tissue-specific manner.
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Affiliation(s)
- James R. Evans
- grid.4868.20000 0001 2171 1133School of Biological and Chemical Sciences, Queen Mary University of London, Mile End Rd, London, E1 4NS UK
| | - Jose V. Torres-Pérez
- grid.4868.20000 0001 2171 1133School of Biological and Chemical Sciences, Queen Mary University of London, Mile End Rd, London, E1 4NS UK
| | - Maria Elena Miletto Petrazzini
- grid.4868.20000 0001 2171 1133School of Biological and Chemical Sciences, Queen Mary University of London, Mile End Rd, London, E1 4NS UK ,grid.5608.b0000 0004 1757 3470Department of Biomedical Sciences, University of Padova, Via Ugo Bassi 58/B, 35131 Padova, Italy
| | - Riva Riley
- grid.4868.20000 0001 2171 1133School of Biological and Chemical Sciences, Queen Mary University of London, Mile End Rd, London, E1 4NS UK
| | - Caroline H. Brennan
- grid.4868.20000 0001 2171 1133School of Biological and Chemical Sciences, Queen Mary University of London, Mile End Rd, London, E1 4NS UK
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Goswami A, Huda N, Yasmin T, Hosen MI, Hasan AKMM, Nabi AHMN. Association study of leukocyte telomere length and genetic polymorphism within hTERT promoter with type 2 diabetes in Bangladeshi population. Mol Biol Rep 2021; 48:285-295. [PMID: 33389530 DOI: 10.1007/s11033-020-06045-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Accepted: 11/28/2020] [Indexed: 12/12/2022]
Abstract
Telomeres are protective cap on the ends of DNA of non-coding tandem repeats of TTAGGG. Human telomerase reverse transcriptase (hTERT) is a catalytic subunit of telomerase that maintains the structure of telomeres. Type 2 diabetes (T2D) affects multi-organ and telomere length by altering telomerase activity. We aimed to evaluate the relative telomere length (RTL) and risk association of rs2853669 with T2D in Bangladeshi population. RTL was measured in 408 unrelated Bangladeshi (224 T2D and 184 healthy) using primers for target gene and reference gene albumin. Genotypic frequencies for rs2853669 were determined using TaqMan® probes. The mean level of age adjusted RTL (AARTL) varied significantly between the healthy and individuals with T2D for all the genotypes with respect to rs2853669. Moreover, healthy individuals had significantly higher AARTL than T2D. Similar findings were observed when study participants were stratified based on their gender. Association studies revealed that under codominant model of inheritance, TC genotype showed protective role against development of type 2 diabetes. This study suggests a possible role of telomere biology in T2DM, but their association needs to be evaluated further with a larger series and matched healthy controls.
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Affiliation(s)
- Atoll Goswami
- Department of Biochemistry and Molecular Biology, University of Dhaka, Dhaka-1000, Bangladesh
| | - Nafiul Huda
- Department of Biochemistry and Molecular Biology, University of Dhaka, Dhaka-1000, Bangladesh
| | - Tahirah Yasmin
- Department of Biochemistry and Molecular Biology, University of Dhaka, Dhaka-1000, Bangladesh
| | - Md Ismail Hosen
- Department of Biochemistry and Molecular Biology, University of Dhaka, Dhaka-1000, Bangladesh
| | - A K M Mahbub Hasan
- Department of Biochemistry and Molecular Biology, University of Dhaka, Dhaka-1000, Bangladesh
| | - A H M Nurun Nabi
- Department of Biochemistry and Molecular Biology, University of Dhaka, Dhaka-1000, Bangladesh.
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