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Qiu GH, Fu M, Zheng X, Huang C. Protection of the genome and the central exome by peripheral non-coding DNA against DNA damage in health, ageing and age-related diseases. Biol Rev Camb Philos Soc 2024. [PMID: 39327815 DOI: 10.1111/brv.13151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Revised: 09/15/2024] [Accepted: 09/18/2024] [Indexed: 09/28/2024]
Abstract
DNA in eukaryotic genomes is under constant assault from both exogenous and endogenous sources, leading to DNA damage, which is considered a major molecular driver of ageing. Fortunately, the genome and the central exome are safeguarded against these attacks by abundant peripheral non-coding DNA. Non-coding DNA codes for small non-coding RNAs that inactivate foreign nucleic acids in the cytoplasm and physically blocks these attacks in the nucleus. Damage to non-coding DNA produced during such blockage is removed in the form of extrachromosomal circular DNA (eccDNA) through nucleic pore complexes. Consequently, non-coding DNA serves as a line of defence for the exome against DNA damage. The total amount of non-coding DNA/heterochromatin declines with age, resulting in a decrease in both physical blockage and eccDNA exclusion, and thus an increase in the accumulation of DNA damage in the nucleus during ageing and in age-related diseases. Here, we summarize recent evidence supporting a protective role of non-coding DNA in healthy and pathological states and argue that DNA damage is the proximate cause of ageing and age-related genetic diseases. Strategies aimed at strengthening the protective role of non-coding DNA/heterochromatin could potentially offer better systematic protection for the dynamic genome and the exome against diverse assaults, reduce the burden of DNA damage to the exome, and thus slow ageing, counteract age-related genetic diseases and promote a healthier life for individuals.
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Affiliation(s)
- Guo-Hua Qiu
- College of Life Sciences, Longyan University, Longyan, 364012, People's Republic of China
- Fujian Provincial Key Laboratory of Preventive Veterinary Medicine and Biotechnology, Engineering Research Center for the Prevention and Control of Animal-Origin Zoonosis, Key Laboratory for the Prevention and Control of Animal Infectious Diseases and Biotechnology, Fujian Province Universities, Longyan, People's Republic of China
| | - Mingjun Fu
- College of Life Sciences, Longyan University, Longyan, 364012, People's Republic of China
- Fujian Provincial Key Laboratory of Preventive Veterinary Medicine and Biotechnology, Engineering Research Center for the Prevention and Control of Animal-Origin Zoonosis, Key Laboratory for the Prevention and Control of Animal Infectious Diseases and Biotechnology, Fujian Province Universities, Longyan, People's Republic of China
| | - Xintian Zheng
- College of Life Sciences, Longyan University, Longyan, 364012, People's Republic of China
- Fujian Provincial Key Laboratory of Preventive Veterinary Medicine and Biotechnology, Engineering Research Center for the Prevention and Control of Animal-Origin Zoonosis, Key Laboratory for the Prevention and Control of Animal Infectious Diseases and Biotechnology, Fujian Province Universities, Longyan, People's Republic of China
| | - Cuiqin Huang
- College of Life Sciences, Longyan University, Longyan, 364012, People's Republic of China
- Fujian Provincial Key Laboratory of Preventive Veterinary Medicine and Biotechnology, Engineering Research Center for the Prevention and Control of Animal-Origin Zoonosis, Key Laboratory for the Prevention and Control of Animal Infectious Diseases and Biotechnology, Fujian Province Universities, Longyan, People's Republic of China
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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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3
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Fekete M, Major D, Feher A, Fazekas-Pongor V, Lehoczki A. Geroscience and pathology: a new frontier in understanding age-related diseases. Pathol Oncol Res 2024; 30:1611623. [PMID: 38463143 PMCID: PMC10922957 DOI: 10.3389/pore.2024.1611623] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Accepted: 02/07/2024] [Indexed: 03/12/2024]
Abstract
Geroscience, a burgeoning discipline at the intersection of aging and disease, aims to unravel the intricate relationship between the aging process and pathogenesis of age-related diseases. This paper explores the pivotal role played by geroscience in reshaping our understanding of pathology, with a particular focus on age-related diseases. These diseases, spanning cardiovascular and cerebrovascular disorders, malignancies, and neurodegenerative conditions, significantly contribute to the morbidity and mortality of older individuals. We delve into the fundamental cellular and molecular mechanisms underpinning aging, including mitochondrial dysfunction and cellular senescence, and elucidate their profound implications for the pathogenesis of various age-related diseases. Emphasis is placed on the importance of assessing key biomarkers of aging and biological age within the realm of pathology. We also scrutinize the interplay between cellular senescence and cancer biology as a central area of focus, underscoring its paramount significance in contemporary pathological research. Moreover, we shed light on the integration of anti-aging interventions that target fundamental aging processes, such as senolytics, mitochondria-targeted treatments, and interventions that influence epigenetic regulation within the domain of pathology research. In conclusion, the integration of geroscience concepts into pathological research heralds a transformative paradigm shift in our understanding of disease pathogenesis and promises breakthroughs in disease prevention and treatment.
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Affiliation(s)
- Monika Fekete
- Department of Public Health, Semmelweis University, Budapest, Hungary
| | - David Major
- Department of Public Health, Semmelweis University, Budapest, Hungary
| | - Agnes Feher
- Department of Public Health, Semmelweis University, Budapest, Hungary
| | | | - Andrea Lehoczki
- Department of Public Health, Semmelweis University, Budapest, Hungary
- Departments of Hematology and Stem Cell Transplantation, South Pest Central Hospital, National Institute of Hematology and Infectious Diseases, Saint Ladislaus Campus, Budapest, Hungary
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4
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Mostafa H, Gutierrez-Tordera L, Mateu-Fabregat J, Papandreou C, Bulló M. Dietary fat, telomere length and cognitive function: unravelling the complex relations. Curr Opin Lipidol 2024; 35:33-40. [PMID: 38018863 DOI: 10.1097/mol.0000000000000900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2023]
Abstract
PURPOSE OF REVIEW The review aims to explore the recent evidence on the associations between different dietary fat intake and cognitive function, and to understand the role of telomere length in this relationship. RECENT FINDINGS Clinical and preclinical studies included in this review suggest that dietary fat intake is associated with cognitive function and telomere length. High intake of saturated fats and trans fats, commonly found in ultra-processed foods, appears to have negative effects on cognitive function and telomere length, while other dietary fats, such as omega-3 polyunsaturated fatty acids and monounsaturated fatty acids are associated with improved cognitive performance and reduced telomere attrition. Controversial results related to omega-6 polyunsaturated fatty acids intake and its impact on cognitive function were found. Dietary fats may affect telomere length and cognition through oxidative stress, inflammation, and insulin resistance. SUMMARY The current review illustrated the relationship between dietary fat and cognitive function by focusing on the role of telomere length as a potential intermediator. More future studies are required, however, in order to develop targeted interventions aimed at preserving cognitive well-being throughout life.
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Affiliation(s)
- Hamza Mostafa
- Nutrition and Metabolic Health Research Group (NuMeH), Department of Biochemistry and Biotechnology, Rovira i Virgili University (URV)
- Institute of Health Pere Virgili (IISPV)
- Center of Environmental, Food and Toxicological Technology - TecnATox, Rovira i Virgili University
| | - Laia Gutierrez-Tordera
- Nutrition and Metabolic Health Research Group (NuMeH), Department of Biochemistry and Biotechnology, Rovira i Virgili University (URV)
- Institute of Health Pere Virgili (IISPV)
- Center of Environmental, Food and Toxicological Technology - TecnATox, Rovira i Virgili University
| | - Javier Mateu-Fabregat
- Nutrition and Metabolic Health Research Group (NuMeH), Department of Biochemistry and Biotechnology, Rovira i Virgili University (URV)
- Institute of Health Pere Virgili (IISPV)
- Center of Environmental, Food and Toxicological Technology - TecnATox, Rovira i Virgili University
| | - Christopher Papandreou
- Nutrition and Metabolic Health Research Group (NuMeH), Department of Biochemistry and Biotechnology, Rovira i Virgili University (URV)
- Institute of Health Pere Virgili (IISPV)
- Center of Environmental, Food and Toxicological Technology - TecnATox, Rovira i Virgili University
| | - Mònica Bulló
- Nutrition and Metabolic Health Research Group (NuMeH), Department of Biochemistry and Biotechnology, Rovira i Virgili University (URV)
- Institute of Health Pere Virgili (IISPV)
- Center of Environmental, Food and Toxicological Technology - TecnATox, Rovira i Virgili University
- CIBER Physiology of Obesity and Nutrition (CIBEROBN), Carlos III Health Institute, Madrid, Spain
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5
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Vellingiri B, Balasubramani K, Iyer M, Raj N, Elangovan A, Song K, Yeo HC, Jayakumar N, Kinoshita M, Thangarasu R, Narayanasamy A, Dayem AA, Prajapati VK, Gopalakrishnan AV, Cho SG. Role of Telomeres and Telomerase in Parkinson's Disease-A New Theranostics? Adv Biol (Weinh) 2023; 7:e2300097. [PMID: 37590305 DOI: 10.1002/adbi.202300097] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 05/19/2023] [Indexed: 08/19/2023]
Abstract
Parkinson's disease (PD) is a complex condition that is significantly influenced by oxidative stress and inflammation. It is also suggested that telomere shortening (TS) is regulated by oxidative stress which leads to various diseases including age-related neurodegenerative diseases like PD. Thus, it is anticipated that PD would result in TS of peripheral blood mononuclear cells (PBMCs). Telomeres protect the ends of eukaryotic chromosomes preserving them against fusion and destruction. The TS is a normal process because DNA polymerase is unable to replicate the linear ends of the DNA due to end replication complications and telomerase activity in various cell types counteracts this process. PD is usually observed in the aged population and progresses over time therefore, disparities among telomere length in PBMCs of PD patients are recorded and it is still a question whether it has any useful role. Here, the likelihood of telomere attrition in PD and its implications concerning microglia activation, ageing, oxidative stress, and the significance of telomerase activators are addressed. Also, the possibility of telomeres and telomerase as a diagnostic and therapeutic biomarker in PD is discussed.
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Affiliation(s)
- Balachandar Vellingiri
- Stem Cell and Regenerative Medicine/Translational Research, Department of Zoology, School of Basic Sciences, Central University of Punjab, Bathinda, Punjab, 151401, India
| | - Kiruthika Balasubramani
- Human Molecular Cytogenetics and Stem Cell Laboratory, Department of Human Genetics and Molecular Biology, Bharathiar University, Coimbatore, Tamil Nadu, 641046, India
| | - Mahalaxmi Iyer
- Department of Biotechnology, Karpagam Academy of Higher Education (Deemed to be University), Coimbatore, Tamil Nadu, 641021, India
| | - Neethu Raj
- Human Molecular Cytogenetics and Stem Cell Laboratory, Department of Human Genetics and Molecular Biology, Bharathiar University, Coimbatore, Tamil Nadu, 641046, India
| | - Ajay Elangovan
- Stem Cell and Regenerative Medicine/Translational Research, Department of Zoology, School of Basic Sciences, Central University of Punjab, Bathinda, Punjab, 151401, India
| | - Kwonwoo Song
- Department of Stem Cell and Regenerative Biotechnology, Molecular and Cellular Reprogramming Center and Institute of Advanced Regenerative Science, Konkuk University, Seoul, 05029, Republic of Korea
| | - Han-Cheol Yeo
- Department of Stem Cell and Regenerative Biotechnology, Molecular and Cellular Reprogramming Center and Institute of Advanced Regenerative Science, Konkuk University, Seoul, 05029, Republic of Korea
| | - Namitha Jayakumar
- Department of Biotechnology, Sri Ramakrishna College of Arts and Science, Coimbatore, Tamil Nadu, 641006, India
| | - Masako Kinoshita
- Department of Neurology, National Hospital Organization Utano National Hospital, Ondoyama-Cho, Narutaki, Ukyo-Ku, Kyoto, 616-8255, Japan
| | - Ravimanickam Thangarasu
- Department of Zoology, School of Science, Tamil Nadu Open University, Saidapet, Chennai, 600015, India
| | - Arul Narayanasamy
- Disease Proteomics Laboratory, Department of Zoology, Bharathiar University, Coimbatore, Tamil Nadu, 641046, India
| | - Ahmed Abdal Dayem
- Department of Stem Cell and Regenerative Biotechnology, Molecular and Cellular Reprogramming Center and Institute of Advanced Regenerative Science, Konkuk University, Seoul, 05029, Republic of Korea
| | - Vijay Kumar Prajapati
- Department of Biochemistry, University of Delhi South Campus, Benito Juarez Road, Dhaula Kuan, New Delhi, 110021, India
| | - Abilash Valsala Gopalakrishnan
- Department of Biomedical Sciences, School of Biosciences and Technology, Vellore Institute of Technology, Vellore, Tamil Nadu, 632014, India
| | - Ssang-Goo Cho
- Department of Stem Cell and Regenerative Biotechnology, Molecular and Cellular Reprogramming Center and Institute of Advanced Regenerative Science, Konkuk University, Seoul, 05029, Republic of Korea
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Gurvich C, Thomas N, Hudaib AR, Van Rheenen TE, Thomas EHX, Tan EJ, Neill E, Carruthers SP, Sumner PJ, Romano-Silva M, Bozaoglu K, Kulkarni J, Rossell SL. The relationship between cognitive clusters and telomere length in bipolar-schizophrenia spectrum disorders. Psychol Med 2023; 53:5119-5126. [PMID: 35920237 DOI: 10.1017/s0033291722002148] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
BACKGROUND Schizophrenia and bipolar disorder are complex mental illnesses that are associated with cognitive deficits. There is considerable cognitive heterogeneity that exists within both disorders. Studies that cluster schizophrenia and bipolar patients into subgroups based on their cognitive profile increasingly demonstrate that, relative to healthy controls, there is a severely compromised subgroup and a relatively intact subgroup. There is emerging evidence that telomere shortening, a marker of cellular senescence, may be associated with cognitive impairments. The aim of this study was to explore the relationship between cognitive subgroups in bipolar-schizophrenia spectrum disorders and telomere length against a healthy control sample. METHODS Participants included a transdiagnostic group diagnosed with bipolar, schizophrenia or schizoaffective disorder (n = 73) and healthy controls (n = 113). Cognitive clusters within the transdiagnostic patient group, were determined using K-means cluster analysis based on current cognitive functioning (MATRICS Consensus Cognitive Battery scores). Telomere length was determined using quantitative PCRs genomic DNA extracted from whole blood. Emergent clusters were then compared to the healthy control group on telomere length. RESULTS Two clusters emerged within the patient group that were deemed to reflect a relatively intact cognitive group and a cognitively impaired subgroup. Telomere length was significantly shorter in the severely impaired cognitive subgroup compared to the healthy control group. CONCLUSIONS This study replicates previous findings of transdiagnostic cognitive subgroups and associates shorter telomere length with the severely impaired cognitive subgroup. These findings support emerging literature associating cognitive impairments in psychiatric disorders to accelerated cellular aging as indexed by telomere length.
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Affiliation(s)
- Caroline Gurvich
- Department of Psychiatry, Central Clinical School, Monash University and the Alfred Hospital, Melbourne, VIC, Australia
| | - Natalie Thomas
- Department of Biochemistry & Pharmacology, Faculty of Medicine, Dentistry and Health Sciences, University of Melbourne, Melbourne VIC, Australia
| | - Abdul-Rahman Hudaib
- Department of Psychiatry, Central Clinical School, Monash University and the Alfred Hospital, Melbourne, VIC, Australia
| | - Tamsyn E Van Rheenen
- Melbourne Neuropsychiatry Centre, University of Melbourne, Melbourne, VIC, Australia
- Centre for Mental Health, Faculty of Health, Arts and Design, Swinburne University of Technology, Melbourne, VIC, Australia
| | - Elizabeth H X Thomas
- Department of Psychiatry, Central Clinical School, Monash University and the Alfred Hospital, Melbourne, VIC, Australia
| | - Eric J Tan
- Centre for Mental Health, Faculty of Health, Arts and Design, Swinburne University of Technology, Melbourne, VIC, Australia
- Department of Mental Health, St Vincent's Hospital, Melbourne, VIC, Australia
| | - Erica Neill
- Centre for Mental Health, Faculty of Health, Arts and Design, Swinburne University of Technology, Melbourne, VIC, Australia
- Department of Mental Health, St Vincent's Hospital, Melbourne, VIC, Australia
| | - Sean P Carruthers
- Centre for Mental Health, Faculty of Health, Arts and Design, Swinburne University of Technology, Melbourne, VIC, Australia
| | - Philip J Sumner
- Centre for Mental Health, Faculty of Health, Arts and Design, Swinburne University of Technology, Melbourne, VIC, Australia
| | - Marco Romano-Silva
- Department Saude Mental, Faculdade de Medicina, UFMG, Belo Horizonte, Brazil
| | - Kiymet Bozaoglu
- Bruce Lefroy Centre for Genetic Health Research, Murdoch Children's Research Institute, Melbourne, Victoria, Australia
- Department of Paediatrics, The University of Melbourne, Melbourne, Victoria, Australia
| | - Jayashri Kulkarni
- Department of Psychiatry, Central Clinical School, Monash University and the Alfred Hospital, Melbourne, VIC, Australia
| | - Susan L Rossell
- Centre for Mental Health, Faculty of Health, Arts and Design, Swinburne University of Technology, Melbourne, VIC, Australia
- Department of Mental Health, St Vincent's Hospital, Melbourne, VIC, Australia
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7
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Duchaine CS, Brisson C, Diorio C, Talbot D, Maunsell E, Carmichael PH, Giguère Y, Gilbert-Ouimet M, Trudel X, Ndjaboué R, Vézina M, Milot A, Mâsse B, Dionne CE, Laurin D. Work-Related Psychosocial Factors and Global Cognitive Function: Are Telomere Length and Low-Grade Inflammation Potential Mediators of This Association? INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2023; 20:4929. [PMID: 36981836 PMCID: PMC10049148 DOI: 10.3390/ijerph20064929] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Revised: 03/05/2023] [Accepted: 03/08/2023] [Indexed: 06/18/2023]
Abstract
The identification of modifiable factors that could maintain cognitive function is a public health priority. It is thought that some work-related psychosocial factors help developing cognitive reserve through high intellectual complexity. However, they also have well-known adverse health effects and are considered to be chronic psychosocial stressors. Indeed, these stressors could increase low-grade inflammation and promote oxidative stress associated with accelerated telomere shortening. Both low-grade inflammation and shorter telomeres have been associated with a cognitive decline. This study aimed to evaluate the total, direct, and indirect effects of work-related psychosocial factors on global cognitive function overall and by sex, through telomere length and an inflammatory index. A random sample of 2219 participants followed over 17 years was included in this study, with blood samples and data with cognitive function drawn from a longitudinal study of 9188 white-collar workers (51% female). Work-related psychosocial factors were evaluated according to the Demand-Control-Support and the Effort-Reward Imbalance (ERI) models. Global cognitive function was evaluated with the validated Montreal Cognitive Assessment (MoCA). Telomere length and inflammatory biomarkers were measured using standardised protocols. The direct and indirect effects were estimated using a novel mediation analysis method developed for multiple correlated mediators. Associations were observed between passive work or low job control, and shorter telomeres among females, and between low social support at work, ERI or iso-strain, and a higher inflammatory index among males. An association was observed with higher cognitive performance for longer telomeres, but not for the inflammatory index. Passive work overall, and low reward were associated with lower cognitive performance in males; whereas, high psychological demand in both males and females and high job strain in females were associated with a higher cognitive performance. However, none of these associations were mediated by telomere length or the inflammatory index. This study suggests that some work-related psychosocial factors could be associated with shorter telomeres and low-grade inflammation, but these associations do not explain the relationship between work-related psychosocial factors and global cognitive function. A better understanding of the biological pathways, by which these factors affect cognitive function, could guide future preventive strategies to maintain cognitive function and promote healthy aging.
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Affiliation(s)
- Caroline S. Duchaine
- Centre d’excellence sur le vieillissement de Québec (CEVQ), CIUSSS-Capitale Nationale, Québec, QC G1S 4L8, Canada
- Faculty of Medicine, Université Laval, Québec, QC G1V 0A6, Canada
- Centre de Recherche du CHU de Québec—Université Laval, Québec, QC G1S 4L8, Canada
- VITAM, Centre de Recherche en santé Durable, Québec, QC G1S 4L8, Canada
- Institut sur le Vieillissement et la Participation Sociale des Aînés, Université Laval, Québec, QC G1S 4L8, Canada
| | - Chantal Brisson
- Centre d’excellence sur le vieillissement de Québec (CEVQ), CIUSSS-Capitale Nationale, Québec, QC G1S 4L8, Canada
- Faculty of Medicine, Université Laval, Québec, QC G1V 0A6, Canada
- Centre de Recherche du CHU de Québec—Université Laval, Québec, QC G1S 4L8, Canada
- VITAM, Centre de Recherche en santé Durable, Québec, QC G1S 4L8, Canada
| | - Caroline Diorio
- Faculty of Medicine, Université Laval, Québec, QC G1V 0A6, Canada
- Centre de Recherche du CHU de Québec—Université Laval, Québec, QC G1S 4L8, Canada
| | - Denis Talbot
- Faculty of Medicine, Université Laval, Québec, QC G1V 0A6, Canada
- Centre de Recherche du CHU de Québec—Université Laval, Québec, QC G1S 4L8, Canada
| | - Elizabeth Maunsell
- Faculty of Medicine, Université Laval, Québec, QC G1V 0A6, Canada
- Centre de Recherche du CHU de Québec—Université Laval, Québec, QC G1S 4L8, Canada
| | - Pierre-Hugues Carmichael
- Centre d’excellence sur le vieillissement de Québec (CEVQ), CIUSSS-Capitale Nationale, Québec, QC G1S 4L8, Canada
- Centre de Recherche du CHU de Québec—Université Laval, Québec, QC G1S 4L8, Canada
| | - Yves Giguère
- Faculty of Medicine, Université Laval, Québec, QC G1V 0A6, Canada
- Centre de Recherche du CHU de Québec—Université Laval, Québec, QC G1S 4L8, Canada
| | - Mahée Gilbert-Ouimet
- Centre de Recherche du CHU de Québec—Université Laval, Québec, QC G1S 4L8, Canada
- Canada Research Chair in Sex and Gender in Occupational Health, Université du Québec à Rimouski, Campus de Lévis, Lévis, QC G6V 0A6, Canada
| | - Xavier Trudel
- Centre d’excellence sur le vieillissement de Québec (CEVQ), CIUSSS-Capitale Nationale, Québec, QC G1S 4L8, Canada
- Faculty of Medicine, Université Laval, Québec, QC G1V 0A6, Canada
- Centre de Recherche du CHU de Québec—Université Laval, Québec, QC G1S 4L8, Canada
- VITAM, Centre de Recherche en santé Durable, Québec, QC G1S 4L8, Canada
| | - Ruth Ndjaboué
- School of Social Work, University of Sherbrooke, Sherbrooke, QC J1K 2R1, Canada
| | - Michel Vézina
- Institut National de Santé Publique du Québec (INSPQ), Québec, QC G1V 5B3, Canada
| | - Alain Milot
- Centre d’excellence sur le vieillissement de Québec (CEVQ), CIUSSS-Capitale Nationale, Québec, QC G1S 4L8, Canada
- Faculty of Medicine, Université Laval, Québec, QC G1V 0A6, Canada
| | - Benoît Mâsse
- École de Santé Publique de l’Université de Montréal, Montréal, QC H3N 1X9, Canada
| | - Clermont E. Dionne
- Centre d’excellence sur le vieillissement de Québec (CEVQ), CIUSSS-Capitale Nationale, Québec, QC G1S 4L8, Canada
- Faculty of Medicine, Université Laval, Québec, QC G1V 0A6, Canada
- Centre de Recherche du CHU de Québec—Université Laval, Québec, QC G1S 4L8, Canada
- VITAM, Centre de Recherche en santé Durable, Québec, QC G1S 4L8, Canada
- Institut sur le Vieillissement et la Participation Sociale des Aînés, Université Laval, Québec, QC G1S 4L8, Canada
| | - Danielle Laurin
- Centre d’excellence sur le vieillissement de Québec (CEVQ), CIUSSS-Capitale Nationale, Québec, QC G1S 4L8, Canada
- Centre de Recherche du CHU de Québec—Université Laval, Québec, QC G1S 4L8, Canada
- VITAM, Centre de Recherche en santé Durable, Québec, QC G1S 4L8, Canada
- Institut sur le Vieillissement et la Participation Sociale des Aînés, Université Laval, Québec, QC G1S 4L8, Canada
- Faculty of Pharmacy, Université Laval, Québec, QC G1V 0A6, Canada
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8
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Schäfer Hackenhaar F, Josefsson M, Nordin Adolfsson A, Landfors M, Kauppi K, Porter T, Milicic L, Laws SM, Hultdin M, Adolfsson R, Degerman S, Pudas S. Sixteen-Year Longitudinal Evaluation of Blood-Based DNA Methylation Biomarkers for Early Prediction of Alzheimer's Disease. J Alzheimers Dis 2023; 94:1443-1464. [PMID: 37393498 PMCID: PMC10473121 DOI: 10.3233/jad-230039] [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] [Accepted: 05/30/2023] [Indexed: 07/03/2023]
Abstract
BACKGROUND DNA methylation (DNAm), an epigenetic mark reflecting both inherited and environmental influences, has shown promise for Alzheimer's disease (AD) prediction. OBJECTIVE Testing long-term predictive ability (>15 years) of existing DNAm-based epigenetic age acceleration (EAA) measures and identifying novel early blood-based DNAm AD-prediction biomarkers. METHODS EAA measures calculated from Illumina EPIC data from blood were tested with linear mixed-effects models (LMMs) in a longitudinal case-control sample (50 late-onset AD cases; 51 matched controls) with prospective data up to 16 years before clinical onset, and post-onset follow-up. Novel DNAm biomarkers were generated with epigenome-wide LMMs, and Sparse Partial Least Squares Discriminant Analysis applied at pre- (10-16 years), and post-AD-onset time-points. RESULTS EAA did not differentiate cases from controls during the follow-up time (p > 0.05). Three new DNA biomarkers showed in-sample predictive ability on average 8 years pre-onset, after adjustment for age, sex, and white blood cell proportions (p-values: 0.022-<0.00001). Our longitudinally-derived panel replicated nominally (p = 0.012) in an external cohort (n = 146 cases, 324 controls). However, its effect size and discriminatory accuracy were limited compared to APOEɛ4-carriership (OR = 1.38 per 1 SD DNAm score increase versus OR = 13.58 for ɛ4-allele carriage; AUCs = 77.2% versus 87.0%). Literature review showed low overlap (n = 4) across 3275 AD-associated CpGs from 8 published studies, and no overlap with our identified CpGs.
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Affiliation(s)
- Fernanda Schäfer Hackenhaar
- Department of Integrative Medical Biology, Umeå University, Umeå, Sweden
- Umeå Center for Functional Brain Imaging, Umeå University, Umeå, Sweden
| | - Maria Josefsson
- Umeå Center for Functional Brain Imaging, Umeå University, Umeå, Sweden
- Department of Statistics, USBE, Umeå University, Umeå, Sweden
- Center for Ageing and Demographic Research, Umeå University, Umeå, Sweden
| | | | - Mattias Landfors
- Department of Medical Biosciences, Pathology, Umeå University, Umeå, Sweden
| | - Karolina Kauppi
- Department of Integrative Medical Biology, Umeå University, Umeå, Sweden
- Department of Medical Epidemiology and Biostatistics, Karolinska Institute, Stockholm, Sweden
| | - Tenielle Porter
- Centre for Precision Health, Edith Cowan University, Joondalup, WA, Australia
- Collaborative Genomics and Translation Group, School of Medical and Health Sciences, Edith Cowan University, Joondalup, WA, Australia
- Curtin Medical School, Curtin University, Bentley, WA, Australia
| | - Lidija Milicic
- Centre for Precision Health, Edith Cowan University, Joondalup, WA, Australia
- Collaborative Genomics and Translation Group, School of Medical and Health Sciences, Edith Cowan University, Joondalup, WA, Australia
| | - Simon M. Laws
- Centre for Precision Health, Edith Cowan University, Joondalup, WA, Australia
- Collaborative Genomics and Translation Group, School of Medical and Health Sciences, Edith Cowan University, Joondalup, WA, Australia
- Curtin Medical School, Curtin University, Bentley, WA, Australia
| | - Magnus Hultdin
- Department of Medical Biosciences, Pathology, Umeå University, Umeå, Sweden
| | - Rolf Adolfsson
- Department of Clinical Sciences, Umeå University, Umeå, Sweden
| | - Sofie Degerman
- Department of Medical Biosciences, Pathology, Umeå University, Umeå, Sweden
- Department of Clinical Microbiology, Umeå University, Umeå, Sweden
| | - Sara Pudas
- Department of Integrative Medical Biology, Umeå University, Umeå, Sweden
- Umeå Center for Functional Brain Imaging, Umeå University, Umeå, Sweden
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9
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Hackenhaar FS, Josefsson M, Adolfsson AN, Landfors M, Kauppi K, Hultdin M, Adolfsson R, Degerman S, Pudas S. Short leukocyte telomeres predict 25-year Alzheimer's disease incidence in non-APOE ε4-carriers. Alzheimers Res Ther 2021; 13:130. [PMID: 34266503 PMCID: PMC8283833 DOI: 10.1186/s13195-021-00871-y] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Accepted: 06/29/2021] [Indexed: 12/26/2022]
Abstract
BACKGROUND Leukocyte telomere length (LTL) has been shown to predict Alzheimer's disease (AD), albeit inconsistently. Failing to account for the competing risks between AD, other dementia types, and mortality, can be an explanation for the inconsistent findings in previous time-to-event analyses. Furthermore, previous studies indicate that the association between LTL and AD is non-linear and may differ depending on apolipoprotein E (APOE) ε4 allele carriage, the strongest genetic AD predictor. METHODS We analyzed whether baseline LTL in interaction with APOE ε4 predicts AD, by following 1306 initially non-demented subjects for 25 years. Gender- and age-residualized LTL (rLTL) was categorized into tertiles of short, medium, and long rLTLs. Two complementary time-to-event models that account for competing risks were used; the Fine-Gray model to estimate the association between the rLTL tertiles and the cumulative incidence of AD, and the cause-specific hazard model to assess whether the cause-specific risk of AD differed between the rLTL groups. Vascular dementia and death were considered competing risk events. Models were adjusted for baseline lifestyle-related risk factors, gender, age, and non-proportional hazards. RESULTS After follow-up, 149 were diagnosed with AD, 96 were diagnosed with vascular dementia, 465 died without dementia, and 596 remained healthy. Baseline rLTL and other covariates were assessed on average 8 years before AD onset (range 1-24). APOE ε4-carriers had significantly increased incidence of AD, as well as increased cause-specific AD risk. A significant rLTL-APOE interaction indicated that short rLTL at baseline was significantly associated with an increased incidence of AD among non-APOE ε4-carriers (subdistribution hazard ratio = 3.24, CI 1.404-7.462, P = 0.005), as well as borderline associated with increased cause-specific risk of AD (cause-specific hazard ratio = 1.67, CI 0.947-2.964, P = 0.07). Among APOE ε4-carriers, short or long rLTLs were not significantly associated with AD incidence, nor with the cause-specific risk of AD. CONCLUSIONS Our findings from two complementary competing risk time-to-event models indicate that short rLTL may be a valuable predictor of the AD incidence in non-APOE ε4-carriers, on average 8 years before AD onset. More generally, the findings highlight the importance of accounting for competing risks, as well as the APOE status of participants in AD biomarker research.
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Affiliation(s)
- Fernanda Schäfer Hackenhaar
- Department of Integrative Medical Biology, Umeå University, SE-901 87, Umeå, Sweden.
- Umeå Center for Functional Brain Imaging, Umeå University, SE-90 187, Umeå, Sweden.
| | - Maria Josefsson
- Umeå Center for Functional Brain Imaging, Umeå University, SE-90 187, Umeå, Sweden
- Department of Statistics, USBE, Umeå University, SE-901 87, Umeå, Sweden
- Center for Ageing and Demographic Research, Umeå University, SE-901 87, Umeå, Sweden
| | | | - Mattias Landfors
- Department of Medical Biosciences, Pathology, Umeå University, SE-901 85, Umeå, Sweden
| | - Karolina Kauppi
- Department of Integrative Medical Biology, Umeå University, SE-901 87, Umeå, Sweden
- Department of Medical Epidemiology and Biostatistics, Karolinska Institute, SE-171 77, Stockholm, Sweden
| | - Magnus Hultdin
- Department of Medical Biosciences, Pathology, Umeå University, SE-901 85, Umeå, Sweden
| | - Rolf Adolfsson
- Department of Clinical Sciences, Umeå University, SE-901 85, Umeå, Sweden
| | - Sofie Degerman
- Department of Medical Biosciences, Pathology, Umeå University, SE-901 85, Umeå, Sweden
- Department of Clinical Microbiology, Umeå University, SE-901 85, Umeå, Sweden
| | - Sara Pudas
- Department of Integrative Medical Biology, Umeå University, SE-901 87, Umeå, Sweden
- Umeå Center for Functional Brain Imaging, Umeå University, SE-90 187, Umeå, Sweden
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