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Yu HJ, Byun YH, Park CK. Techniques for assessing telomere length: A methodological review. Comput Struct Biotechnol J 2024; 23:1489-1498. [PMID: 38633384 PMCID: PMC11021795 DOI: 10.1016/j.csbj.2024.04.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Revised: 04/04/2024] [Accepted: 04/05/2024] [Indexed: 04/19/2024] Open
Abstract
Telomeres are located at the ends of chromosomes and have specific sequences with a distinctive structure that safeguards genes. They possess capping structures that protect chromosome ends from fusion events and ensure chromosome stability. Telomeres shorten in length during each cycle of cell division. When this length reaches a certain threshold, it can lead to genomic instability, thus being implicated in various diseases, including cancer and neurodegenerative disorders. The possibility of telomeres serving as a biomarker for aging and age-related disease is being explored, and their significance is still under study. This is because post-mitotic cells, which are mature cells that do not undergo mitosis, do not experience telomere shortening due to age. Instead, other causes, for example, exposure to oxidative stress, can directly damage the telomeres, causing genomic instability. Nonetheless, a general agreement has been established that measuring telomere length offers valuable insights and forms a crucial foundation for analyzing gene expression and epigenetic data. Numerous approaches have been developed to accurately measure telomere lengths. In this review, we summarize various methods and their advantages and limitations for assessing telomere length.
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Affiliation(s)
- Hyeon Jong Yu
- Department of Neurosurgery, Seoul National University College of Medicine, Seoul National University Hospital, Seoul, Republic of Korea
| | - Yoon Hwan Byun
- Department of Neurosurgery, SMG-SNU Boramae Medical Center, Seoul, Republic of Korea
| | - Chul-Kee Park
- Department of Neurosurgery, Seoul National University College of Medicine, Seoul National University Hospital, Seoul, Republic of Korea
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2
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Kidd E, Meimaridou E, Williams J, Metherell LA, Walley AJ, Fairbrother UL. Choice of gDNA isolation method has a significant impact on average murine Telomere Length estimates. Prep Biochem Biotechnol 2024; 54:788-795. [PMID: 38088914 DOI: 10.1080/10826068.2023.2288572] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/23/2024]
Abstract
Telomere Length (TL) and integrity is significantly associated with age-related disease, multiple genetic and environmental factors. We observe mouse genomic DNA (gDNA) isolation methods to have a significant impact on average TL estimates. The canonical qPCR method does not measure TL directly but via the ratio of telomere repeats to a single copy gene (SCG) generating a T/S ratio. We use a monochromatic-multiplex-qPCR (mmqPCR) method which multiplexes the PCR and enables quantification of the target and the single copy gene within the same qPCR reaction. We demonstrate that TL measurements, from murine gDNA, isolated via Spin Columns (SC) and Magnetic Beads (MB), generate significantly smaller T/S ratios compared to gDNA isolated via traditional phenol/chloroform methods. The former methods may impede correct TL estimation by producing non representative fragment sets and reducing qPCR efficacy. This work highlights discrepancies in TL measurements due to different extraction techniques. We recommend the use of gDNA isolation methods that are shown to preserve DNA length and integrity, such as phenol/chloroform isolation. We propose that widely used high throughput DNA isolation methodologies can create spurious associations within a sample set, thus creating misleading data. We suggest that published TL associations should be revisited in the light of these data.
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Affiliation(s)
- E Kidd
- School of Human Sciences, London Metropolitan University, London, UK
| | - E Meimaridou
- School of Human Sciences, London Metropolitan University, London, UK
| | - J Williams
- Centre for Endocrinology, William Harvey Research Institute, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - L A Metherell
- Centre for Endocrinology, William Harvey Research Institute, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - A J Walley
- Section of Molecular Biology, Institute of Medical and Biomedical Education, St George's, University of London, London, UK
| | - U L Fairbrother
- School of Human Sciences, London Metropolitan University, London, UK
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Moeckel C, Gaydosh L, Schneper L, Mitchell C, Notterman DA. Material hardship and telomere length in children. Child Dev 2024. [PMID: 38943658 DOI: 10.1111/cdev.14126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/01/2024]
Abstract
Telomere length (TL) serves as a biomarker of exposure to stressors, including material hardship. Data from the Future of Families and Child Wellbeing Study (1998-2015) were utilized to determine whether prior material hardship was associated with shorter salivary TL at years 9 and 15. 49% of the year 9 study population were female, 49% were Black, and 25% were Hispanic. At year 9 (N = 1990), regression analyses found a significant association between prior material hardship and shorter TL (β = -.005, p < .01). Additionally, at year 15 (N = 1874), material hardship experienced during infancy and toddlerhood was associated with shorter TL (β = -.009, p < .01), pointing toward infancy and toddlerhood as a sensitive period.
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Affiliation(s)
- Camille Moeckel
- Princeton University, Princeton, New Jersey, USA
- Penn State College of Medicine, Hershey, Pennsylvania, USA
| | - Lauren Gaydosh
- The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
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Choi H, Cho SW, Kim HH, Yi KH, Park DJ, Park YJ. Shortened telomere length in peripheral blood leukocytes is associated with cumulative radioactive iodine doses in patients with differentiated thyroid carcinoma. Cancer 2024; 130:2215-2223. [PMID: 38376914 DOI: 10.1002/cncr.35256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2023] [Revised: 01/05/2024] [Accepted: 01/29/2024] [Indexed: 02/21/2024]
Abstract
BACKGROUND Telomere length is associated with cancer risk and cancer aggressiveness. Radioactive iodine (RAI) therapy for thyroid cancer has raised concerns for second primary malignancy (SPM) in patients with high cumulative doses. The association between RAI dose and peripheral blood leukocyte telomere length was examined. METHODS A total of 425 patients were included who underwent total thyroidectomy and were followed up for at least 1 year with or without RAI treatment. The relative telomere length (RTL) of the patients was assessed via a quantitative polymerase chain reaction amplification method. RAI doses were divided into five groups on the basis of cumulative dose, and a comparison was made among these groups. RESULTS The number of patients with RAI treatment was 287 (67.5%), and the cumulative RAI dose was 3.33 GBq (range, 1.11-131.35 GBq). The mean RTL was significantly shorter in the highest RAI group (>22.2 GBq) compared to both the no-RAI and lower dose groups. The association between RAI dose and RTL was positive in the lower RAI group (1.1-3.7 GBq) and negative in the highest RAI group in both univariate and multivariate analyses. We observed 59 (13.9%) SPMs and 20 (4.7%) mortalities, and RTL did not show a significant risk effect for all-cause, thyroid cancer-specific, or SPM-specific mortality. CONCLUSIONS In patients with thyroid cancer who underwent total thyroidectomy, peripheral blood leukocyte telomere length exhibited a significant association with cumulative RAI dose higher than 22.2 GBq. These results suggest the possibility of telomere length shortening in patients who undergo high-dose RAI treatment.
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Affiliation(s)
- Hoonsung Choi
- Department of Internal Medicine, Chung-ang University College of Medicine, Seoul, Korea
- Department of Internal Medicine, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - Sun Wook Cho
- Department of Internal Medicine, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - Hwan Hee Kim
- Department of Internal Medicine, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - Ka Hee Yi
- Department of Internal Medicine, Seoul Metropolitan Government-Seoul National University Boramae Medical Center, Seoul, Korea
| | - Do Joon Park
- Department of Internal Medicine, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - Young Joo Park
- Department of Internal Medicine, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
- Genomic Medicine Institute, Medical Research Center, Seoul National University College of Medicine, Seoul, Korea
- Department of Molecular Medicine and Biopharmaceutical Sciences, Graduate School of Convergence Science and Technology, Seoul National University, Seoul, Korea
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5
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Nelson S, Mitcheson M, Nestor B, Bosquet Enlow M, Borsook D. Biomarkers of stress as mind-body intervention outcomes for chronic pain: an evaluation of constructs and accepted measurement. Pain 2024:00006396-990000000-00566. [PMID: 38564185 DOI: 10.1097/j.pain.0000000000003241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Accepted: 03/03/2024] [Indexed: 04/04/2024]
Affiliation(s)
- Sarah Nelson
- Department of Anesthesiology, Critical Care, and Pain Medicine, Boston Children's Hospital, Boston, MA, United States
- Department of Psychiatry, Harvard Medical School, Boston, MA, United States
| | - Morgan Mitcheson
- Department of Anesthesiology, Critical Care, and Pain Medicine, Boston Children's Hospital, Boston, MA, United States
| | - Bridget Nestor
- Department of Anesthesiology, Critical Care, and Pain Medicine, Boston Children's Hospital, Boston, MA, United States
- Department of Psychiatry, Harvard Medical School, Boston, MA, United States
| | - Michelle Bosquet Enlow
- Department of Psychiatry, Harvard Medical School, Boston, MA, United States
- Department of Psychiatry and Behavioral Sciences, Boston Children's Hospital, Boston, MA, United States
| | - David Borsook
- Department of Psychiatry and Department of Radiology, Massachusetts General Hospital, Boston, MA, United States
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Martin NA, McLester-Davis LWY, Roy TR, Magruder MG, Hastings WJ, Drury SS. Monochrome Multiplex Quantitative PCR Telomere Length Measurement. J Vis Exp 2024:10.3791/66545. [PMID: 38587381 PMCID: PMC11080955 DOI: 10.3791/66545] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/09/2024] Open
Abstract
Telomeres are ribonucleoprotein structures at the end of all eukaryotic chromosomes that protect DNA from damage and preserve chromosome stability. Telomere length (TL) has been associated with various exposures, biological processes, and health outcomes. This article describes the monochrome multiplex quantitative polymerase chain reaction (MMqPCR) assay protocol routinely conducted in our laboratory for measuring relative mean TL from human DNA. There are several different PCR-based TL measurement methods, but the specific protocol for the MMqPCR method presented in this publication is repeatable, efficient, cost-effective, and suitable for population-based studies. This detailed protocol outlines all information necessary for investigators to establish this assay in their laboratory. In addition, this protocol provides specific steps to increase the reproducibility of TL measurement by this assay, defined by the intraclass correlation coefficient (ICC) across repeated measurements of the same sample. The ICC is a critical factor in evaluating expected power for a specific study population; as such, reporting cohort-specific ICCs for any TL assay is a necessary step to enhance the overall rigor of population-based studies of TL. Example results utilizing DNA samples extracted from peripheral blood mononuclear cells demonstrate the feasibility of generating highly repeatable TL data using this MMqPCR protocol.
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Affiliation(s)
| | - Lauren W Y McLester-Davis
- Native American Center for Health Professions, University of Wisconsin-Madison; Department of Medicine, University of Wisconsin-Madison; Department of Biochemistry, University of Wisconsin-Madison
| | | | | | | | - Stacy S Drury
- Department of Psychiatry and Behavioral Sciences, Boston Children's Hospital;
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Mishra S, Stukken CVD, Drury S, Nawrot TS, Martens DS. Prenatal air pollution exposure in relation to the telomere-mitochondrial axis of aging at birth: A systematic review. ENVIRONMENTAL RESEARCH 2024; 244:117990. [PMID: 38141917 PMCID: PMC10922941 DOI: 10.1016/j.envres.2023.117990] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Revised: 12/06/2023] [Accepted: 12/18/2023] [Indexed: 12/25/2023]
Abstract
BACKGROUND Telomere length (TL) and mitochondrial DNA (mtDNA) are central markers of vital biological mechanisms, including cellular aging. Prenatal air pollution exposure may impact molecular markers of aging leading to adverse health effects. OBJECTIVE To perform a systematic review on human population-based studies investigating the association between prenatal air pollution exposure and TL or mtDNA content at birth. METHODOLOGY Searches were undertaken on PubMed and Web of Science until July 2023. The framework of the review was based on the PRISMA-P guidelines. RESULTS Nineteen studies studied prenatal air pollution and TL or mtDNA content at birth. Studies investigating TL or mtDNA content measured at any other time or did not evaluate prenatal air pollution were excluded. Twelve studies (including 4381 participants with study sample range: 97 to 743 participants) investigated newborn TL and eight studies (including 3081 participants with study sample range: 120 to 743 participants) investigated mtDNA content at birth. Seven studies focused on particulate matter (PM2.5) exposure and newborn TL of which all, except two, showed an inverse association in at least one of the gestational trimesters. Of the eight studies on mtDNA content, four focused on PM2.5 air pollution with two of them reporting an inverse association. For PM2.5 exposure, observations on trimester-specific effects were inconsistent. Current literature showing associations with other prenatal air pollutants (including nitrogen oxides, sulfur dioxide, carbon monoxide and ozone) is inconsistent. CONCLUSION This review provides initial evidence that prenatal PM2.5 exposure impacts the telomere-mitochondrial axis of aging at birth. The current evidence did not reveal harmonious observations for trimester-specific associations nor showed consistent effects of other air pollutants. Future studies should elucidate the specific contribution of prenatal exposure to pollutants other than PM in relation to TL and mtDNA content at birth, and the potential later life health consequences.
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Affiliation(s)
- Shradha Mishra
- Centre for Environmental Sciences, Hasselt University, Hasselt, Belgium
| | | | - Stacy Drury
- Department of Psychiatry and Behavioral Sciences, Boston Children's Hospital, Harvard Medical School, Boston, MA, United States
| | - Tim S Nawrot
- Centre for Environmental Sciences, Hasselt University, Hasselt, Belgium; Department of Public Health & Primary Care, Occupational & Environmental Medicine, Leuven University, Leuven, Belgium
| | - Dries S Martens
- Centre for Environmental Sciences, Hasselt University, Hasselt, Belgium.
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Elbadry MI, Tawfeek A, Hirano T, El-Mokhtar MA, Kenawey M, Helmy AM, Ogawa S, Mughal MZ, Nannya Y. A rare homozygous variant in TERT gene causing variable bone marrow failure, fragility fractures, rib anomalies and extremely short telomere lengths with high serum IgE. Br J Haematol 2024; 204:1086-1095. [PMID: 37926112 DOI: 10.1111/bjh.19176] [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: 09/01/2023] [Revised: 10/16/2023] [Accepted: 10/17/2023] [Indexed: 11/07/2023]
Abstract
By whole exome sequencing, we identified a homozygous c.2086 C→T (p.R696C) TERT mutation in patients who present with a spectrum of variable bone marrow failure (BMF), raccoon eyes, dystrophic nails, rib anomalies, fragility fractures (FFs), high IgE level, extremely short telomere lengths (TLs), and skewed numbers of cytotoxic T cells with B and NK cytopenia. Haploinsufficiency in the other family members resulted in short TL and osteopenia. These patients also had the lowest bone mineral density Z-score compared to other BMF-patients. Danazol/zoledronic acid improved the outcomes of BMF and FFs. This causative TERT variant has been observed in one family afflicted with dyskeratosis congenita (DC), and thus, we also define a second report and new phenotype related to the variant which should be suspected in severe cases of DC with co-existent BMF, FFs, high IgE level and rib anomalies.
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Affiliation(s)
- Mahmoud I Elbadry
- Division of Haematology, Department of Internal Medicine, Faculty of Medicine, Sohag University, Sohag, Egypt
| | - Ahmed Tawfeek
- Department of Clinical and Chemical Pathology, Faculty of Medicine, Sohag University, Sohag, Egypt
| | - Tomonori Hirano
- Department of Pathology and Tumor Biology, Kyoto University, Kyoto, Japan
| | - Mohamed A El-Mokhtar
- Department of Medical Microbiology and Immunology, Faculty of Medicine, Assiut University, Asyut, Egypt
- Gilbert and Rose-Marie Chagoury School of Medicine, Lebanese American University, Byblos, Lebanon
| | - Mohamed Kenawey
- Orthopedic Surgery Department, Faculty of Medicine, Sohag University, Sohag, Egypt
- Royal Manchester Children's Hospital, Manchester University NHS Foundation Trust, Manchester, UK
| | - Ahmed M Helmy
- Department of Internal Medicine, Faculty of Medicine, Sohag University, Sohag, Egypt
| | - Seishi Ogawa
- Department of Pathology and Tumor Biology, Kyoto University, Kyoto, Japan
- Institute for the Advanced Study of Human Biology (WPI-ASHBi), Kyoto University, Yoshida-Konoe-cho, Sakyo-ku, Kyoto, Japan
- Department of Medicine, Centre for Hematology and Regenerative Medicine, Karolinska Institute, Stockholm, Sweden
| | - M Zulf Mughal
- Pediatric Bone Disorders, Al Jalila Children's Speciality Hospital, Dubai, UAE
| | - Yasuhito Nannya
- Department of Pathology and Tumor Biology, Kyoto University, Kyoto, Japan
- Division of Hematopoietic Disease Control, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
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Lunghi E, Bilandžija H. Telomere length and dynamics in Astyanax mexicanus cave and surface morphs. PeerJ 2024; 12:e16957. [PMID: 38435987 PMCID: PMC10908260 DOI: 10.7717/peerj.16957] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Accepted: 01/25/2024] [Indexed: 03/05/2024] Open
Abstract
Background Telomeres are non-coding DNA repeats at the chromosome ends and their shortening is considered one of the major causes of aging. However, they also serve as a biomarker of environmental exposures and their length and attrition is affected by various stressors. In this study, we examined the average telomere length in Astyanax mexicanus, a species that has both surface-dwelling and cave-adapted populations. The cave morph descended from surface ancestors and adapted to a markedly different environment characterized by specific biotic and abiotic stressors, many of which are known to affect telomere length. Our objective was to explore whether telomere length differs between the two morphs and whether it serves as a biological marker of aging or correlates with the diverse environments the morphs are exposed to. Methods We compared telomere length and shortening between laboratory-reared Pachón cavefish and Rio Choy surface fish of A. mexicanus across different tissues and ages. Results Astyanax mexicanus surface fish exhibited longer average telomere length compared to cavefish. In addition, we did not observe telomere attrition in either cave or surface form as a result of aging in adults up to 9 years old, suggesting that efficient mechanisms prevent telomere-mediated senescence in laboratory stocks of this species, at least within this time frame. Our results suggest that telomere length in Astyanax may be considered a biomarker of environmental exposures. Cavefish may have evolved shorter and energetically less costly telomeres due to the absence of potential stressors known to affect surface species, such as predator pressure and ultra-violet radiation. This study provides the first insights into telomere dynamics in Astyanax morphs and suggests that shorter telomeres may have evolved as an adaptation to caves.
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Affiliation(s)
- Enrico Lunghi
- Department of Life, Health and Environmental Sciences, University of L’Aquila, L’Aquila, Italy
| | - Helena Bilandžija
- Division of Molecular Biology, Ruder Bošković Institute, Zagreb, Croatia
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Wolf SE, Hastings WJ, Ye Q, Etzel L, Apsley AT, Chiaro C, Heim CC, Heller T, Noll JG, Schreier HMC, Shenk CE, Shalev I. Cross-tissue comparison of telomere length and quality metrics of DNA among individuals aged 8 to 70 years. PLoS One 2024; 19:e0290918. [PMID: 38386656 PMCID: PMC10883573 DOI: 10.1371/journal.pone.0290918] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Accepted: 01/03/2024] [Indexed: 02/24/2024] Open
Abstract
Telomere length (TL) is an important biomarker of cellular aging, yet its links with health outcomes may be complicated by use of different tissues. We evaluated within- and between-individual variability in TL and quality metrics of DNA across five tissues using a cross-sectional dataset ranging from 8 to 70 years (N = 197). DNA was extracted from all tissue cells using the Gentra Puregene DNA Extraction Kit. Absolute TL (aTL) in kilobase pairs was measured in buccal epithelial cells, saliva, dried blood spots (DBS), buffy coat, and peripheral blood mononuclear cells (PBMCs) using qPCR. aTL significantly shortened with age for all tissues except saliva and buffy coat, although buffy coat was available for a restricted age range (8 to 15 years). aTL did not significantly differ across blood-based tissues (DBS, buffy coat, PBMC), which had significantly longer aTL than buccal cells and saliva. Additionally, aTL was significantly correlated for the majority of tissue pairs, with partial Spearman's correlations controlling for age and sex ranging from ⍴ = 0.18 to 0.51. We also measured quality metrics of DNA including integrity, purity, and quantity of extracted DNA from all tissues and explored whether controlling for DNA metrics improved predictions of aTL. We found significant tissue variation: DNA from blood-based tissues had high DNA integrity, more acceptable A260/280 and A260/230 values, and greater extracted DNA concentrations compared to buccal cells and saliva. Longer aTL was associated with lower DNA integrity, higher extracted DNA concentrations, and higher A260/230, particularly for saliva. Model comparisons suggested that incorporation of quality DNA metrics improves models of TL, although relevant metrics vary by tissue. These findings highlight the merits of using blood-based tissues and suggest that incorporation of quality DNA metrics as control variables in population-based studies can improve TL predictions, especially for more variable tissues like buccal and saliva.
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Affiliation(s)
- Sarah E. Wolf
- Department of Biobehavioral Health, Penn State University, University Park, Pennsylvania, United States of America
| | - Waylon J. Hastings
- Department of Biobehavioral Health, Penn State University, University Park, Pennsylvania, United States of America
- Department of Psychiatry and Behavioral Science, Tulane University School of Medicine, New Orleans, Louisiana, United States of America
| | - Qiaofeng Ye
- Department of Biobehavioral Health, Penn State University, University Park, Pennsylvania, United States of America
| | - Laura Etzel
- Department of Biobehavioral Health, Penn State University, University Park, Pennsylvania, United States of America
| | - Abner T. Apsley
- Department of Biobehavioral Health, Penn State University, University Park, Pennsylvania, United States of America
| | - Christopher Chiaro
- Department of Biobehavioral Health, Penn State University, University Park, Pennsylvania, United States of America
| | - Christine C. Heim
- Charité–Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, and Humboldt-Universität zu Berlin, Berlin Institute of Health, Institute of Medical Psychology, Berlin, Germany
| | - Thomas Heller
- Department of Biobehavioral Health, Penn State University, University Park, Pennsylvania, United States of America
| | - Jennie G. Noll
- Department of Psychology, University of Rochester, Rochester, NY, United States of America
- Department of Human Development and Family Studies, The Pennsylvania State University, University Park, PA, United States of America
| | - Hannah M. C. Schreier
- Department of Biobehavioral Health, Penn State University, University Park, Pennsylvania, United States of America
| | - Chad E. Shenk
- Department of Human Development and Family Studies, The Pennsylvania State University, University Park, PA, United States of America
- Department of Pediatrics, The Pennsylvania State University College of Medicine, Hershey, PA, United States of America
| | - Idan Shalev
- Department of Biobehavioral Health, Penn State University, University Park, Pennsylvania, United States of America
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Pepke ML. Telomere length is not a useful tool for chronological age estimation in animals. Bioessays 2024; 46:e2300187. [PMID: 38047504 DOI: 10.1002/bies.202300187] [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: 09/27/2023] [Revised: 11/16/2023] [Accepted: 11/20/2023] [Indexed: 12/05/2023]
Abstract
Telomeres are short repetitive DNA sequences capping the ends of chromosomes. Telomere shortening occurs during cell division and may be accelerated by oxidative damage or ameliorated by telomere maintenance mechanisms. Consequently, telomere length changes with age, which was recently confirmed in a large meta-analysis across vertebrates. However, based on the correlation between telomere length and age, it was concluded that telomere length can be used as a tool for chronological age estimation in animals. Correlation should not be confused with predictability, and the current data and studies suggest that telomeres cannot be used to reliably predict individual chronological age. There are biological reasons for why there is large individual variation in telomere dynamics, which is mainly due to high susceptibility to a wide range of environmental, but also genetic factors, rendering telomeres unfeasible as a tool for age estimation. The use of telomeres for chronological age estimation is largely a misguided effort, but its occasional reappearance in the literature raises concerns that it will mislead resources in wildlife conservation.
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Affiliation(s)
- Michael L Pepke
- Center for Evolutionary Hologenomics, Globe Institute, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
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12
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Randell Z, Dehghanbanadaki H, Fendereski K, Jimbo M, Aston K, Hotaling J. Sperm telomere length in male-factor infertility and reproduction. Fertil Steril 2024; 121:12-25. [PMID: 37949346 DOI: 10.1016/j.fertnstert.2023.11.001] [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: 09/27/2023] [Revised: 11/02/2023] [Accepted: 11/03/2023] [Indexed: 11/12/2023]
Abstract
The underlying reasons for male-factor infertility are often unknown. 30% of all men have unexplained semen analysis abnormalities. Moreover, 15%-40% of infertile men have normal semen analyses. There have been increasing efforts to identify causes and associations that may explain idiopathic male-factor infertility. Telomeres have become an area of considerable interest in the field because of the essential roles they have in cellular division and genome integrity. Research to date most consistently supports that men with infertility have shorter sperm telomere length (STL); however, associations between shorter STL and meaningful reproductive health outcomes are less consistent. There is a major need for additional studies to better identify the role of STL in male reproductive health and use the information to improve the counseling and treatment of couples with idiopathic male-factor infertility.
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Affiliation(s)
- Zane Randell
- Division of Urology, Department of Surgery, University of Utah, Salt Lake City, Utah.
| | - Hojat Dehghanbanadaki
- Division of Urology, Department of Surgery, University of Utah, Salt Lake City, Utah
| | - Kiarad Fendereski
- Division of Urology, Department of Surgery, University of Utah, Salt Lake City, Utah
| | - Masaya Jimbo
- Division of Urology, Department of Surgery, University of Utah, Salt Lake City, Utah
| | - Kenneth Aston
- Division of Urology, Department of Surgery, University of Utah, Salt Lake City, Utah
| | - James Hotaling
- Division of Urology, Department of Surgery, University of Utah, Salt Lake City, Utah
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Ferrer A, Stephens ZD, Kocher JPA. Experimental and Computational Approaches to Measure Telomere Length: Recent Advances and Future Directions. Curr Hematol Malig Rep 2023; 18:284-291. [PMID: 37947937 PMCID: PMC10709248 DOI: 10.1007/s11899-023-00717-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/30/2023] [Indexed: 11/12/2023]
Abstract
PURPOSE OF REVIEW The length of telomeres, protective structures at the chromosome ends, is a well-established biomarker for pathological conditions including multisystemic syndromes called telomere biology disorders. Approaches to measure telomere length (TL) differ on whether they estimate average, distribution, or chromosome-specific TL, and each presents their own advantages and limitations. RECENT FINDINGS The development of long-read sequencing and publication of the telomere-to-telomere human genome reference has allowed for scalable and high-resolution TL estimation in pre-existing sequencing datasets but is still impractical as a dedicated TL test. As sequencing costs continue to fall and strategies for selectively enriching telomere regions prior to sequencing improve, these approaches may become a promising alternative to classic methods. Measurement methods rely on probe hybridization, qPCR or more recently, computational methods using sequencing data. Refinements of existing techniques and new approaches have been recently developed but a test that is accurate, simple, and scalable is still lacking.
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Affiliation(s)
- Alejandro Ferrer
- Division of Hematology, Mayo Clinic, Rochester, 200 First Street SW, Rochester, MN, USA.
- Center for Individualized Medicine, Mayo Clinic, Rochester, MN, USA.
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14
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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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15
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Kakridonis F, Pneumatikos SG, Vakonaki E, Berdiaki A, Tzatzarakis MN, Fragkiadaki P, Spandidos DA, Baliou S, Ioannou P, Hatzidaki E, Nikitovic D, Tsatsakis A, Vasiliadis E. Telomere length as a predictive biomarker in osteoporosis (Review). Biomed Rep 2023; 19:87. [PMID: 37881605 PMCID: PMC10594068 DOI: 10.3892/br.2023.1669] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Accepted: 09/22/2023] [Indexed: 10/27/2023] Open
Abstract
Telomeres are the ends of chromosomes that protect them from DNA damage. There is evidence to suggest that telomere shortening appears with advanced age. Since aging is a significant risk factor for developing age-related complications, it is plausible that telomere shortening may be involved in the development of osteoporosis. The present review summarizes the potential of telomere shortening as a biomarker for detecting the onset of osteoporosis. For the purposes of the present review, the following scientific databases were searched for relevant articles: PubMed/NCBI, Cochrane Library of Systematic Reviews, Scopus, Embase and Google Scholar. The present review includes randomized and non-randomized controlled studies and case series involving humans, irrespective of the time of their publication. In six out of the 11 included studies providing data on humans, there was at least a weak association between telomere length and osteoporosis, with the remaining studies exhibiting no such association. As a result, telomere shortening may be used as a biomarker or as part of a panel of biomarkers for tracking the onset and progression of osteoporosis.
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Affiliation(s)
- Fotios Kakridonis
- 5th Department of Orthopaedics, KAT Attica General Hospital, 14561 Athens, Greece
| | - Spyros G. Pneumatikos
- 3rd Department of Orthopaedics, KAT Attica General Hospital, 14561 Athens, Greece
- Department of Orthopaedics, Medical School, Kapodistrian University of Athens, 11527 Athens, Greece
| | - Elena Vakonaki
- Laboratory of Toxicology, Medical School, University of Crete, 71003 Heraklion, Greece
| | - Aikaterini Berdiaki
- Laboratory of Anatomy-Histology-Embryology, Medical School, University of Crete, 71003 Heraklion, Greece
| | | | - Persefoni Fragkiadaki
- Laboratory of Toxicology, Medical School, University of Crete, 71003 Heraklion, Greece
| | - Demetrios A. Spandidos
- Laboratory of Clinical Virology, Medical School, University of Crete, 71003 Heraklion, Greece
| | - Stella Baliou
- Laboratory of Toxicology, Medical School, University of Crete, 71003 Heraklion, Greece
| | - Petros Ioannou
- Laboratory of Internal Medicine, Medical School, University of Crete, 71003 Heraklion, Greece
| | - Eleftheria Hatzidaki
- Department of Neonatology and NICU, University Hospital of Heraklion, 71500 Heraklion, Greece
| | - Dragana Nikitovic
- Laboratory of Anatomy-Histology-Embryology, Medical School, University of Crete, 71003 Heraklion, Greece
| | - Aristidis Tsatsakis
- Laboratory of Toxicology, Medical School, University of Crete, 71003 Heraklion, Greece
| | - Elias Vasiliadis
- 3rd Department of Orthopaedics, KAT Attica General Hospital, 14561 Athens, Greece
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16
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Zhang N, Baker EC, Welsh TH, Riley DG. Telomere Dynamics in Livestock. BIOLOGY 2023; 12:1389. [PMID: 37997988 PMCID: PMC10669808 DOI: 10.3390/biology12111389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2023] [Revised: 10/26/2023] [Accepted: 10/27/2023] [Indexed: 11/25/2023]
Abstract
Telomeres are repeated sequences of nucleotides at the end of chromosomes. They deteriorate across mitotic divisions of a cell. In Homo sapiens this process of lifetime reduction has been shown to correspond with aspects of organismal aging and exposure to stress or other insults. The early impetus to characterize telomere dynamics in livestock related to the concern that aged donor DNA would result in earlier cell senescence and overall aging in cloned animals. Telomere length investigations in dairy cows included breed effects, estimates of additive genetic control (heritability 0.12 to 0.46), and effects of external stressors on telomere degradation across animal life. Evaluation of telomeres with respect to aging has also been conducted in pigs and horses, and there are fewer reports of telomere biology in beef cattle, sheep, and goats. There were minimal associations of telomere length with animal productivity measures. Most, but not all, work in livestock has documented an inverse relationship between peripheral blood cell telomere length and age; that is, a longer telomere length was associated with younger age. Because livestock longevity affects productivity and profitability, the role of tissue-specific telomere attrition in aging may present alternative improvement strategies for genetic improvement while also providing translational biomedical knowledge.
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Affiliation(s)
- Nan Zhang
- Department of Animal Science, Texas A&M University, College Station, TX 77843, USA; (N.Z.); (T.H.W.J.)
| | - Emilie C. Baker
- Department of Agricultural Sciences, West Texas A&M University, Canyon, TX 79016, USA;
| | - Thomas H. Welsh
- Department of Animal Science, Texas A&M University, College Station, TX 77843, USA; (N.Z.); (T.H.W.J.)
- Texas A&M AgriLife Research, College Station, TX 77843, USA
| | - David G. Riley
- Department of Animal Science, Texas A&M University, College Station, TX 77843, USA; (N.Z.); (T.H.W.J.)
- Texas A&M AgriLife Research, College Station, TX 77843, USA
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17
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Xu EY, Schneper LM, Notterman DA. A novel metric to improve mismatched primer selection and quantification accuracy in amplifying DNA repeats for quantitative polymerase chain reactions. PLoS One 2023; 18:e0292559. [PMID: 37812635 PMCID: PMC10561853 DOI: 10.1371/journal.pone.0292559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Accepted: 09/23/2023] [Indexed: 10/11/2023] Open
Abstract
In quantitative polymerase chain reaction (qPCR) experiments, primers containing mismatches with respect to the template are widely used in measuring repetitive DNA elements. Primer-template mismatches may lead to underestimation of the input sample quantity due to inefficient annealing and amplification. But how primer-template mismatches affect quantification accuracy has not been rigorously investigated. In this study, we performed a series of qPCR experiments in which we tested three pairs of mismatched telomere primers (tel1/tel2, tel1b/tel2b and telg/telc) and two pairs of perfect-match reference gene primers (36B4-F/-R and IFNB1-F/-R) at three different primer concentrations under four cycling conditions. Templates used were genomic DNA from two human cell lines and oligo duplexes which contained telomere sequences, reference gene sequences, or both. We demonstrated that the underestimation of input sample quantity from reactions containing mismatched primers was not due to lower amplification efficiency (E), but due to ineffective usage of the input sample. We defined a novel concept of amplification efficacy (f) which quantifies the effectiveness of input sample amplification by primers. We have modified the conventional qPCR kinetic formula to include f, which corrects the effects of primer mismatches. We demonstrated that reactions containing mismatched telomere primer pairs had similar efficiency (E), but varying degrees of reduced efficacy (f) in comparison to those with the perfect-match gene primer pairs. Using the quantitative parameter f, underestimation of initial target by telomere primers can be adjusted to provide a more accurate measurement. Additionally, we found that the tel1b/tel2b primer set at concentration of 500 nM and 900 nM exhibited the best amplification efficacy f. This study provides a novel way to incorporate an evaluation of amplification efficacy into qPCR analysis. In turn, it improves mismatched primer selection and quantification accuracy in amplifying DNA repeats using qPCR methods.
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Affiliation(s)
- Eugenia Y. Xu
- Department of Molecular Biology, Princeton University, Princeton, NJ, United States of America
| | - Lisa M. Schneper
- Department of Molecular Biology, Princeton University, Princeton, NJ, United States of America
| | - Daniel A. Notterman
- Department of Molecular Biology, Princeton University, Princeton, NJ, United States of America
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18
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Sutterlüty H, Bargl M, Holzmann K. Quantifying telomere transcripts as tool to improve risk assessment for genetic instability and genotoxicity. MUTATION RESEARCH. GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS 2023; 891:503690. [PMID: 37770147 DOI: 10.1016/j.mrgentox.2023.503690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Revised: 08/18/2023] [Accepted: 09/04/2023] [Indexed: 10/03/2023]
Abstract
Telomere repeat-containing RNAs (TERRA) are transcribed from telomeres as long non-coding RNAs and are part of the telomere structure with protective function. The genetic stability of cells requires telomeric repeats at the ends of chromosomes. Maintenance of telomere length (TL) is essential for proliferative capacity and chromosomal integrity. In contrast, telomere shortening is a recognized risk factor for carcinogenesis and a biomarker of aging due to the cumulative effects of environmental exposures and life experiences such as trauma or stress. In this context, telomere repeats are lost due to cell proliferation, but are also susceptible to stress factors including reactive oxygen species (ROS) inducing oxidative base damage. Quantitative PCR (qPCR) of genomic DNA is an established method to analyze TL as a tool to detect genotoxic events. That same qPCR method can be applied to RNA converted into cDNA to quantify TERRA as a useful tool to perform high-throughput screenings. This short review summarizes relevant qPCR studies using both TL and TERRA quantification, provides an overall view of the molecular mechanisms of telomere protection against ROS by TERRA, and summarizes the presented studies comparing the results at DNA and RNA levels, which indicate that fluctuations at transcript level might reflect a short-term response. Therefore, we conclude that performing both of these measurements together will improve genotoxicity studies.
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Affiliation(s)
- Hedwig Sutterlüty
- Center for Cancer Research, Comprehensive Cancer Center, Medical University Vienna, Borschkegasse 8a, A-1090 Vienna, Austria
| | - Maximilian Bargl
- Center for Cancer Research, Comprehensive Cancer Center, Medical University Vienna, Borschkegasse 8a, A-1090 Vienna, Austria
| | - Klaus Holzmann
- Center for Cancer Research, Comprehensive Cancer Center, Medical University Vienna, Borschkegasse 8a, A-1090 Vienna, Austria.
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19
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Moreno E, Martínez-Sanz J, Martín-Mateos R, Díaz-Álvarez J, Serrano-Villar S, Burgos-Santamaría D, Luna L, Vivancos MJ, Moreno-Zamora A, Pérez-Elías MJ, Moreno S, Dronda F, Montes ML, Sánchez-Conde M. Global DNA methylation and telomere length as markers of accelerated aging in people living with HIV and non-alcoholic fatty liver disease. BMC Genomics 2023; 24:567. [PMID: 37741970 PMCID: PMC10517540 DOI: 10.1186/s12864-023-09653-2] [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: 04/06/2023] [Accepted: 09/05/2023] [Indexed: 09/25/2023] Open
Abstract
Metabolic-dysfunction-associated fatty liver disease (MAFLD) is a comorbidity that generally increases in people living with HIV (PLWH). This condition is usually accompanied by persistent inflammation and premature immune system aging. In this prospective cohort study, we describe a straightforward methodology for quantifying biomarkers of aging, such as DNA methylation and telomere length, in PLWH and in the context of another relevant condition, such as MAFLD. Fifty-seven samples in total, thirty-eight from PLWH and nineteen from non-PLWH participants with or without MAFLD, were obtained and subjected to DNA extraction from peripheral blood mononuclear cells (PBMCs). Global DNA methylation and telomere length quantification were performed using an adapted enzyme-linked immunosorbent assay (ELISA) and qPCR, respectively. The quantification results were analysed and corrected by clinically relevant variables in this context, such as age, sex, and metabolic syndrome. Our results show an increased association of these biomarkers in PLWH regardless of their MAFLD status. Thus, we propose including the quantification of these age-related factors in studies of comorbidities. This will allow a better understanding of the effect of comorbidities of HIV infection and MAFLD and prevent their effects in these populations in the future.
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Affiliation(s)
- Elena Moreno
- Department of Infectious Diseases, Hospital Universitario Ramón Y Cajal, Instituto Ramón Y Cajal de Investigación Sanitaria (IRYCIS), 28034, Madrid, Spain.
- CIBER de Enfermedades Infecciosas (CIBERINFEC), Instituto de Salud Carlos III, 28029, Madrid, Spain.
| | - Javier Martínez-Sanz
- Department of Infectious Diseases, Hospital Universitario Ramón Y Cajal, Instituto Ramón Y Cajal de Investigación Sanitaria (IRYCIS), 28034, Madrid, Spain
- CIBER de Enfermedades Infecciosas (CIBERINFEC), Instituto de Salud Carlos III, 28029, Madrid, Spain
| | - Rosa Martín-Mateos
- Department of Gastroenterology and Hepatology, Metabolic Liver Disease Clinic, Hospital Universitario Ramón Y Cajal, Instituto Ramón Y Cajal de Investigación Sanitaria (IRYCIS), 28034, Madrid, Spain
- Universidad de Alcalá, 28871, Madrid, Spain
| | - Jorge Díaz-Álvarez
- Department of Infectious Diseases, Hospital Universitario Ramón Y Cajal, Instituto Ramón Y Cajal de Investigación Sanitaria (IRYCIS), 28034, Madrid, Spain
- CIBER de Enfermedades Infecciosas (CIBERINFEC), Instituto de Salud Carlos III, 28029, Madrid, Spain
| | - Sergio Serrano-Villar
- Department of Infectious Diseases, Hospital Universitario Ramón Y Cajal, Instituto Ramón Y Cajal de Investigación Sanitaria (IRYCIS), 28034, Madrid, Spain
- CIBER de Enfermedades Infecciosas (CIBERINFEC), Instituto de Salud Carlos III, 28029, Madrid, Spain
| | - Diego Burgos-Santamaría
- Department of Gastroenterology and Hepatology, Metabolic Liver Disease Clinic, Hospital Universitario Ramón Y Cajal, Instituto Ramón Y Cajal de Investigación Sanitaria (IRYCIS), 28034, Madrid, Spain
| | - Laura Luna
- Department of Infectious Diseases, Hospital Universitario Ramón Y Cajal, Instituto Ramón Y Cajal de Investigación Sanitaria (IRYCIS), 28034, Madrid, Spain
- CIBER de Enfermedades Infecciosas (CIBERINFEC), Instituto de Salud Carlos III, 28029, Madrid, Spain
| | - María Jesús Vivancos
- Department of Infectious Diseases, Hospital Universitario Ramón Y Cajal, Instituto Ramón Y Cajal de Investigación Sanitaria (IRYCIS), 28034, Madrid, Spain
- CIBER de Enfermedades Infecciosas (CIBERINFEC), Instituto de Salud Carlos III, 28029, Madrid, Spain
| | - Ana Moreno-Zamora
- Department of Infectious Diseases, Hospital Universitario Ramón Y Cajal, Instituto Ramón Y Cajal de Investigación Sanitaria (IRYCIS), 28034, Madrid, Spain
- CIBER de Enfermedades Infecciosas (CIBERINFEC), Instituto de Salud Carlos III, 28029, Madrid, Spain
| | - María Jesús Pérez-Elías
- Department of Infectious Diseases, Hospital Universitario Ramón Y Cajal, Instituto Ramón Y Cajal de Investigación Sanitaria (IRYCIS), 28034, Madrid, Spain
- CIBER de Enfermedades Infecciosas (CIBERINFEC), Instituto de Salud Carlos III, 28029, Madrid, Spain
| | - Santiago Moreno
- Department of Infectious Diseases, Hospital Universitario Ramón Y Cajal, Instituto Ramón Y Cajal de Investigación Sanitaria (IRYCIS), 28034, Madrid, Spain
- CIBER de Enfermedades Infecciosas (CIBERINFEC), Instituto de Salud Carlos III, 28029, Madrid, Spain
- Universidad de Alcalá, 28871, Madrid, Spain
| | - Fernando Dronda
- Department of Infectious Diseases, Hospital Universitario Ramón Y Cajal, Instituto Ramón Y Cajal de Investigación Sanitaria (IRYCIS), 28034, Madrid, Spain
- CIBER de Enfermedades Infecciosas (CIBERINFEC), Instituto de Salud Carlos III, 28029, Madrid, Spain
| | - María Luisa Montes
- CIBER de Enfermedades Infecciosas (CIBERINFEC), Instituto de Salud Carlos III, 28029, Madrid, Spain
- Internal Medicine Service, Hospital Universitario La Paz. IdiPAZ, 28046, Madrid, Spain
| | - Matilde Sánchez-Conde
- Department of Infectious Diseases, Hospital Universitario Ramón Y Cajal, Instituto Ramón Y Cajal de Investigación Sanitaria (IRYCIS), 28034, Madrid, Spain.
- CIBER de Enfermedades Infecciosas (CIBERINFEC), Instituto de Salud Carlos III, 28029, Madrid, Spain.
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20
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Bastos-Moreira Y, Ouédraogo L, De Boevre M, Argaw A, de Kok B, Hanley-Cook GT, Deng L, Ouédraogo M, Compaoré A, Tesfamariam K, Ganaba R, Huybregts L, Toe LC, Lachat C, Kolsteren P, De Saeger S, Dailey-Chwalibóg T. A Multi-Omics and Human Biomonitoring Approach to Assessing the Effectiveness of Fortified Balanced Energy-Protein Supplementation on Maternal and Newborn Health in Burkina Faso: A Study Protocol. Nutrients 2023; 15:4056. [PMID: 37764838 PMCID: PMC10535470 DOI: 10.3390/nu15184056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Revised: 09/05/2023] [Accepted: 09/13/2023] [Indexed: 09/29/2023] Open
Abstract
Fortified balanced energy-protein (BEP) supplementation is a promising intervention for improving maternal health, birth outcomes and infant growth in low- and middle-income countries. This nested biospecimen sub-study aimed to evaluate the physiological effect of multi-micronutrient-fortified BEP supplementation on pregnant and lactating women and their infants. Pregnant women (15-40 years) received either fortified BEP and iron-folic acid (IFA) (intervention) or IFA only (control) throughout pregnancy. The same women were concurrently randomized to receive either a fortified BEP supplement during the first 6 months postpartum in combination with IFA for the first 6 weeks (i.e., intervention) or the postnatal standard of care, which comprised IFA alone for 6 weeks postpartum (i.e., control). Biological specimens were collected at different timepoints. Multi-omics profiles will be characterized to assess the mediating effect of BEP supplementation on the different trial arms and its effect on maternal health, as well as birth and infant growth outcomes. The mediating effect of the exposome in the relationship between BEP supplementation and maternal health, birth outcomes and infant growth were characterized via biomonitoring markers of air pollution, mycotoxins and environmental contaminants. The results will provide holistic insight into the granular physiological effects of prenatal and postnatal BEP supplementation.
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Affiliation(s)
- Yuri Bastos-Moreira
- Center of Excellence in Mycotoxicology and Public Health, MYTOXSOUTH Coordination Unit, Faculty of Pharmaceutical Sciences, Ghent University, 9000 Ghent, Belgium; (M.D.B.); (S.D.S.)
- Department of Food Technology, Safety and Health, Faculty of Bioscience Engineering, Ghent University, 9000 Ghent, Belgium; (L.O.); (A.A.); (B.d.K.); (G.T.H.-C.); (L.D.); (K.T.); (L.H.); (L.C.T.); (C.L.); (P.K.)
| | - Lionel Ouédraogo
- Department of Food Technology, Safety and Health, Faculty of Bioscience Engineering, Ghent University, 9000 Ghent, Belgium; (L.O.); (A.A.); (B.d.K.); (G.T.H.-C.); (L.D.); (K.T.); (L.H.); (L.C.T.); (C.L.); (P.K.)
- Centre Muraz, Bobo-Dioulasso 01 BP 390, Burkina Faso
| | - Marthe De Boevre
- Center of Excellence in Mycotoxicology and Public Health, MYTOXSOUTH Coordination Unit, Faculty of Pharmaceutical Sciences, Ghent University, 9000 Ghent, Belgium; (M.D.B.); (S.D.S.)
| | - Alemayehu Argaw
- Department of Food Technology, Safety and Health, Faculty of Bioscience Engineering, Ghent University, 9000 Ghent, Belgium; (L.O.); (A.A.); (B.d.K.); (G.T.H.-C.); (L.D.); (K.T.); (L.H.); (L.C.T.); (C.L.); (P.K.)
| | - Brenda de Kok
- Department of Food Technology, Safety and Health, Faculty of Bioscience Engineering, Ghent University, 9000 Ghent, Belgium; (L.O.); (A.A.); (B.d.K.); (G.T.H.-C.); (L.D.); (K.T.); (L.H.); (L.C.T.); (C.L.); (P.K.)
| | - Giles T. Hanley-Cook
- Department of Food Technology, Safety and Health, Faculty of Bioscience Engineering, Ghent University, 9000 Ghent, Belgium; (L.O.); (A.A.); (B.d.K.); (G.T.H.-C.); (L.D.); (K.T.); (L.H.); (L.C.T.); (C.L.); (P.K.)
| | - Lishi Deng
- Department of Food Technology, Safety and Health, Faculty of Bioscience Engineering, Ghent University, 9000 Ghent, Belgium; (L.O.); (A.A.); (B.d.K.); (G.T.H.-C.); (L.D.); (K.T.); (L.H.); (L.C.T.); (C.L.); (P.K.)
| | - Moctar Ouédraogo
- Agence de Formation de Recherche et d’Expertise en Santé pour l’Afrique (AFRICSanté), Bobo-Dioulasso 01 BP 298, Burkina Faso; (M.O.); (A.C.); (R.G.)
| | - Anderson Compaoré
- Agence de Formation de Recherche et d’Expertise en Santé pour l’Afrique (AFRICSanté), Bobo-Dioulasso 01 BP 298, Burkina Faso; (M.O.); (A.C.); (R.G.)
| | - Kokeb Tesfamariam
- Department of Food Technology, Safety and Health, Faculty of Bioscience Engineering, Ghent University, 9000 Ghent, Belgium; (L.O.); (A.A.); (B.d.K.); (G.T.H.-C.); (L.D.); (K.T.); (L.H.); (L.C.T.); (C.L.); (P.K.)
| | - Rasmané Ganaba
- Agence de Formation de Recherche et d’Expertise en Santé pour l’Afrique (AFRICSanté), Bobo-Dioulasso 01 BP 298, Burkina Faso; (M.O.); (A.C.); (R.G.)
| | - Lieven Huybregts
- Department of Food Technology, Safety and Health, Faculty of Bioscience Engineering, Ghent University, 9000 Ghent, Belgium; (L.O.); (A.A.); (B.d.K.); (G.T.H.-C.); (L.D.); (K.T.); (L.H.); (L.C.T.); (C.L.); (P.K.)
- Nutrition, Diets, and Health Unit, Department of Food and Nutrition Policy, International Food Policy Research Institute (IFPRI), Washington, DC 20005, USA
| | - Laeticia Celine Toe
- Department of Food Technology, Safety and Health, Faculty of Bioscience Engineering, Ghent University, 9000 Ghent, Belgium; (L.O.); (A.A.); (B.d.K.); (G.T.H.-C.); (L.D.); (K.T.); (L.H.); (L.C.T.); (C.L.); (P.K.)
- Unité Nutrition et Maladies Métaboliques, Institut de Recherche en Sciences de la Santé (IRSS), Bobo-Dioulasso 01 BP 545, Burkina Faso
| | - Carl Lachat
- Department of Food Technology, Safety and Health, Faculty of Bioscience Engineering, Ghent University, 9000 Ghent, Belgium; (L.O.); (A.A.); (B.d.K.); (G.T.H.-C.); (L.D.); (K.T.); (L.H.); (L.C.T.); (C.L.); (P.K.)
| | - Patrick Kolsteren
- Department of Food Technology, Safety and Health, Faculty of Bioscience Engineering, Ghent University, 9000 Ghent, Belgium; (L.O.); (A.A.); (B.d.K.); (G.T.H.-C.); (L.D.); (K.T.); (L.H.); (L.C.T.); (C.L.); (P.K.)
| | - Sarah De Saeger
- Center of Excellence in Mycotoxicology and Public Health, MYTOXSOUTH Coordination Unit, Faculty of Pharmaceutical Sciences, Ghent University, 9000 Ghent, Belgium; (M.D.B.); (S.D.S.)
- Department of Biotechnology and Food Technology, Faculty of Science, University of Johannesburg, Doornfontein Campus, Gauteng 2028, South Africa
| | - Trenton Dailey-Chwalibóg
- Department of Food Technology, Safety and Health, Faculty of Bioscience Engineering, Ghent University, 9000 Ghent, Belgium; (L.O.); (A.A.); (B.d.K.); (G.T.H.-C.); (L.D.); (K.T.); (L.H.); (L.C.T.); (C.L.); (P.K.)
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21
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Ye Q, Apsley AT, Etzel L, Hastings WJ, Kozlosky JT, Walker C, Wolf SE, Shalev I. Telomere length and chronological age across the human lifespan: A systematic review and meta-analysis of 414 study samples including 743,019 individuals. Ageing Res Rev 2023; 90:102031. [PMID: 37567392 PMCID: PMC10529491 DOI: 10.1016/j.arr.2023.102031] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Revised: 07/27/2023] [Accepted: 08/07/2023] [Indexed: 08/13/2023]
Abstract
Telomere attrition is a proposed hallmark of aging. To evaluate the association of telomere length (TL) with chronological age across the human lifespan, we conducted a systematic review and meta-analysis of 414 study samples comprising 743,019 individuals aged 0-112 years. We examined both cross-sectional and longitudinal data, and evaluated the impact of various biological and methodological factors including sex, health status, tissue types, DNA extraction procedures, and TL measurement methods. The pooled corrected correlation between TL and age from cross-sectional samples was -0.19 (95%CI: -0.22 to -0.15), which weakened with increased chronological age (β = 0.003, p < 0.001). Z-score change rates of TL across the lifespan showed a gradual decrease in shortening rate until around age 50 and remained at a relatively stable rate towards the elderly period. A greater attrition rate was observed in longitudinal than cross-sectional evaluations. For TL measured in base pairs, the median change rate of TL was -23 bp/year in cross-sectional samples and -38 bp/year in longitudinal samples. Methodological factors including TL measurement methods and tissue types impacted the TL-age correlation, while sex or disease status did not. This meta-analysis revealed the non-linear shortening trend of TL across the human lifespan and provides a reference value for future studies. Results also highlight the importance of methodological considerations when using TL as an aging biomarker.
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Affiliation(s)
- Qiaofeng Ye
- Department of Biobehavioral Health, The Pennsylvania State University, University Park, PA 16802, USA.
| | - Abner T Apsley
- Department of Biobehavioral Health, The Pennsylvania State University, University Park, PA 16802, USA; Department of Molecular, Cellular and Integrative Biological Sciences, The Pennsylvania State University, University Park, PA 16802, USA.
| | - Laura Etzel
- Department of Biobehavioral Health, The Pennsylvania State University, University Park, PA 16802, USA.
| | - Waylon J Hastings
- Department of Psychiatry and Behavioral Science, Tulane University School of Medicine, LA 70112, USA.
| | - John T Kozlosky
- Department of Biobehavioral Health, The Pennsylvania State University, University Park, PA 16802, USA.
| | - Cade Walker
- Department of Biobehavioral Health, The Pennsylvania State University, University Park, PA 16802, USA.
| | - Sarah E Wolf
- Department of Biobehavioral Health, The Pennsylvania State University, University Park, PA 16802, USA.
| | - Idan Shalev
- Department of Biobehavioral Health, The Pennsylvania State University, University Park, PA 16802, USA.
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22
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Montoya M, Uchino BN. Social support and telomere length: a meta-analysis. J Behav Med 2023; 46:556-565. [PMID: 36617609 DOI: 10.1007/s10865-022-00389-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Accepted: 12/26/2022] [Indexed: 01/10/2023]
Abstract
Previous studies have shown that lower social support is associated with higher all-cause mortality (Holt-Lunstad et al. in PLoS ONE Medicine 7:e1000316, 2010). While social support has been associated with system-specific biological measures (e.g., cardiovascular), there is the need to elucidate more general biological mechanisms linking social support to health risk across a number of diseases. In this meta-analytic review, the link between social support and telomere length (Cawthon et al. in Lancet 361:393-395, 2003) was conducted based on the updated PRISMA guidelines (Page et al., 2021). Across 17 studies, higher social support was not significantly related to longer telomere length (Zr = 0.010, 95% CI [- 0.028, 0.047], p > 0.05). The confidence interval indicated that the bulk of plausible values were small to null associations. Little evidence for bias was found as shown by funnel plots and Kendall's Tau. Moderator analyses focusing on the measure of support, health of sample, age, type of assay specimen, and gender were not significant. In conclusion, this review showed no significant relationship between social support and telomere length and highlights important future directions.
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Affiliation(s)
- Mariah Montoya
- Department of Psychology, University of Utah, Salt Lake City, USA
| | - Bert N Uchino
- Department of Psychology and Health Psychology Program, University of Utah, Salt Lake City, USA.
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23
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Allaire P, He J, Mayer J, Moat L, Gerstenberger P, Wilhorn R, Strutz S, Kim DS, Zeng C, Cox N, Shay JW, Denny J, Bastarache L, Hebbring S. Genetic and clinical determinants of telomere length. HGG ADVANCES 2023; 4:100201. [PMID: 37216007 PMCID: PMC10199259 DOI: 10.1016/j.xhgg.2023.100201] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Accepted: 04/21/2023] [Indexed: 05/24/2023] Open
Abstract
Many epidemiologic studies have identified important relationships between leukocyte telomere length (LTL) with genetics and health. Most of these studies have been significantly limited in scope by focusing predominantly on individual diseases or restricted to GWAS analysis. Using two large patient populations derived from Vanderbilt University and Marshfield Clinic biobanks linked to genomic and phenomic data from medical records, we investigated the inter-relationship between LTL, genomics, and human health. Our GWAS confirmed 11 genetic loci previously associated with LTL and two novel loci in SCNN1D and PITPNM1. PheWAS of LTL identified 67 distinct clinical phenotypes associated with both short and long LTL. We demonstrated that several diseases associated with LTL were related to one another but were largely independent from LTL genetics. Age of death was correlated with LTL independent of age. Those with very short LTL (<-1.5 standard deviation [SD]) died 10.4 years (p < 0.0001) younger than those with average LTL (±0.5 SD; mean age of death = 74.2 years). Likewise, those with very long LTL (>1.5 SD) died 1.9 years (p = 0.0175) younger than those with average LTL. This is consistent with the PheWAS results showing diseases associating with both short and long LTL. Finally, we estimated that the genome (12.8%) and age (8.5%) explain the largest proportion of LTL variance, whereas the phenome (1.5%) and sex (0.9%) explained a smaller fraction. In total, 23.7% of LTL variance was explained. These observations provide the rationale for expanded research to understand the multifaceted correlations between TL biology and human health over time, leading to effective LTL usage in medical applications.
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Affiliation(s)
- Patrick Allaire
- Marshfield Clinic Research Institute, Center for Precision Medicine Research, Marshfield, WI, USA
| | - Jing He
- Department of Biomedical Informatics, Vanderbilt University Medical Center, Nashville, TN, USA
| | - John Mayer
- Marshfield Clinic Research Institute, Office of Research Computing and Analytics, Marshfield, WI, USA
| | - Luke Moat
- Marshfield Clinic Research Institute, Center for Precision Medicine Research, Marshfield, WI, USA
| | - Peter Gerstenberger
- Marshfield Clinic Research Institute, Center for Precision Medicine Research, Marshfield, WI, USA
| | - Reynor Wilhorn
- Marshfield Clinic Research Institute, Center for Precision Medicine Research, Marshfield, WI, USA
| | - Sierra Strutz
- Marshfield Clinic Research Institute, Center for Precision Medicine Research, Marshfield, WI, USA
| | - David S.L. Kim
- Marshfield Clinic Health System, Pathology, Marshfield, WI, USA
| | - Chenjie Zeng
- National Human Genome Research Institute, National Institutes of Health, Bethesda, MD, USA
| | - Nancy Cox
- Vanderbilt Genetics Institute, Division of Genetic Medicine, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Jerry W. Shay
- University of Texas Southwestern Medical Center, Department of Cell Biology and the Simmons Comprehensive Cancer Center, Dallas, TX, USA
| | - Joshua Denny
- National Human Genome Research Institute, National Institutes of Health, Bethesda, MD, USA
| | - Lisa Bastarache
- Center for Precision Medicine, Department of Biomedical Informatics, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Scott Hebbring
- Marshfield Clinic Research Institute, Center for Precision Medicine Research, Marshfield, WI, USA
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24
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McLester-Davis LWY, Estrada P, Hastings WJ, Kataria LA, Martin NA, Siebeneicher JT, Tristano RI, Mayne CV, Horlick RP, O'Connell SS, Drury SS. A review and meta-analysis: Cross-tissue telomere length correlations in healthy humans. Ageing Res Rev 2023; 88:101942. [PMID: 37172909 PMCID: PMC11081027 DOI: 10.1016/j.arr.2023.101942] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 04/18/2023] [Accepted: 04/28/2023] [Indexed: 05/15/2023]
Abstract
BACKGROUND AND AIM Tissue source has been shown to exert a significant effect on the magnitude of associations between telomere length and various health outcomes and exposures. The purpose of the present qualitative review and meta-analysis is to describe and investigate the impact of study design and methodological features on the correlation between telomere lengths measured in different tissues from the same healthy individual. METHODS This meta-analysis included studies published from 1988 to 2022. Databases searched included PubMed, Embase, and Web of Science and studies were identified using the keywords "telomere length" and "tissues" or "tissue." A total of 220 articles of 7856 initially identified studies met inclusion criteria for qualitative review, of which 55 met inclusion criteria for meta-analysis in R RESULTS: Studies meeting inclusion criteria for meta-analysis tended to have enhanced demographic and methodological reporting relative to studies only included in the qualitative review. A total of 463 pairwise correlations reported for 4324 unique individuals and 102 distinct tissues were extracted from the 55 studies and subject to meta-analysis, resulting in a significant effect size z = 0.66 (p < 0.0001) and meta-correlation coefficient of r = 0.58. Meta-correlations were significantly moderated by sample size and telomere length measurement methodology, with studies of smaller size and those using hybridization-based analyses exhibiting the largest meta-correlation. Tissue source also significantly moderated the meta-correlation, wherein correlations between samples of a different lineage (e.g., blood vs. non-blood) or collection method (e.g., peripheral vs. surgical) were lower than correlations between samples of the same lineage or collection method. CONCLUSION These results suggest that telomere lengths measured within individuals are generally correlated, but future research should be intentional in selecting a tissue for telomere length measurement that is most biologically relevant to the exposure or outcome investigated and balance this with the feasibility of obtaining the sample in sufficient numbers of individuals.
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Affiliation(s)
| | - Pedro Estrada
- Princeton University Graduate School Neuroscience Institute, United States.
| | | | - Leila A Kataria
- Louisiana State University School of Medicine, United States.
| | - Noelle A Martin
- Tulane University School of Science and Engineering, United States.
| | | | - Renee I Tristano
- University of Chicago Pritzker School of Medicine, United States.
| | - Celia V Mayne
- Tulane University School of Medicine, United States.
| | | | - Samantha S O'Connell
- Louisiana State University School of Medicine, United States; Tulane University School of Public Health and Tropical Medicine, United States.
| | - Stacy S Drury
- Tulane University School of Medicine, United States.
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25
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Francis M, Lindrose A, O'Connell S, Tristano RI, McGarvey C, Drury S. The interaction of socioeconomic stress and race on telomere length in children: A systematic review and meta-analysis. SSM Popul Health 2023; 22:101380. [PMID: 37065841 PMCID: PMC10102414 DOI: 10.1016/j.ssmph.2023.101380] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Revised: 03/12/2023] [Accepted: 03/13/2023] [Indexed: 04/03/2023] Open
Abstract
Rationale Proposed mechanisms relating early life exposures to poor health suggest that biologic indicators of risk are observable in childhood. Telomere length (TL) is a biomarker of aging, psychosocial stress, and a range of environmental exposures. In adults, exposure to early life adversity, including low socioeconomic status (SES), is predictive of shorter TL. However, results in pediatric populations have been mixed. Defining the true relation between TL and SES in childhood is expected to enhance the understanding of the biological pathways through which socioeconomic factors influence health across the life span. Objective The aim of this meta-analysis was to systematically review and quantitatively assess the published literature to better understand how SES, race, and TL are related in pediatric populations. Methods Studies in the United States in any pediatric population with any measure of SES were included and identified through the following electronic databases: PubMed, EMBASE, Web of Science, Medline, Socindex, CINAHL, and Psychinfo. Analysis utilized a multi-level random-effects meta-analysis accounting for multiple effect sizes within a study. Results Thirty-two studies were included with a total of 78 effect sizes that were categorized into income-based, education-based, and composite indicators. Only three studies directly tested the relation between SES and TL as the primary study aim. In the full model, there was a significant relation between SES and TL (r = 0.0220 p = 0.0286). Analysis by type of SES categorization identified a significant moderating effect of income on TL (r = 0.0480, 95% CI: 0.0155 to 0.0802, p = 0.0045) but no significant effect for education or composite SES. Conclusions There is an overall association between SES and TL that is predominately due to the association with income-based SES measures implicating income disparities as a key target for efforts to address health inequity across the life span. Identification of associations between family income and biological changes in children that predict life-span health risk provides key data to support public health policies addressing economic inequality in families and presents a unique opportunity to assess the effect of prevention efforts at the biologic level.
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Affiliation(s)
- Mariza Francis
- Neuroscience Program, Tulane Brain Institute and School of Science and Engineering, Tulane University, 6823 St. Charles Ave., New Orleans, LA, USA
| | - Alyssa Lindrose
- Department of Psychiatry and Behavioral Science, Tulane University School of Medicine, 1430 Tulane Avenue, New Orleans, LA, 70112, USA
| | - Samantha O'Connell
- Office of Academic Affairs and Provost, Tulane University, New Orleans, LA, USA
| | - Renee I. Tristano
- Department of Pediatrics, Tulane University School of Medicine, 1430 Tulane Avenue, New Orleans, LA, 70112, USA
| | - Cecile McGarvey
- Neuroscience Program, Tulane Brain Institute and School of Science and Engineering, Tulane University, 6823 St. Charles Ave., New Orleans, LA, USA
| | - Stacy Drury
- Department of Psychiatry and Behavioral Science, Tulane University School of Medicine, 1430 Tulane Avenue, New Orleans, LA, 70112, USA
- Department of Pediatrics, Tulane University School of Medicine, 1430 Tulane Avenue, New Orleans, LA, 70112, USA
- Tulane Brain Institute, Tulane University, New Orleans, LA, USA
- Neuroscience Program, Tulane Brain Institute and School of Science and Engineering, Tulane University, 6823 St. Charles Ave., New Orleans, LA, USA
- Corresponding author. Department of Psychiatry and Behavioral Science, Tulane University School of Medicine, 1430 Tulane Avenue, New Orleans, LA, 70112, USA.
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26
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Duncan E, Papatheodoulou M, Metcalfe NB, McLennan D. Does pre-spawning catch and release angling affect offspring telomere dynamics in Atlantic salmon? CONSERVATION PHYSIOLOGY 2023; 11:coad018. [PMID: 37113976 PMCID: PMC10129346 DOI: 10.1093/conphys/coad018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 03/06/2023] [Accepted: 03/27/2023] [Indexed: 06/19/2023]
Abstract
The practice of 'catch and release' (C&R) angling confers a balance between animal welfare, conservation efforts and preserving the socio-economic interests of recreational angling. However, C&R angling can still cause exhaustion and physical injury, and often exposes the captured fish to the stress of air exposure. Therefore, the true conservation success of C&R angling depends on whether the angled individuals then survive to reproduction and whether there are any persisting effects on subsequent generations. Here we tested the hypothesis that the stress of C&R angling is then passed on to offspring. We experimentally manipulated the C&R experience of wild adult salmon prior to the spawning season. These parental fish either underwent a C&R simulation (which involved exercise with/without air exposure) or were left as control individuals. We then measured the telomere length of the arising offspring (at the larval stage of development) since previous studies have linked a shorter telomere length with reduced fitness/longevity and the rate of telomere loss is thought to be influenced by stress. Family-level telomere length was positively related to rate of growth. However, the telomere lengths of the salmon offspring were unrelated to the C&R experience of their parents. This may be due to there being no intergenerational effect of parental stress exposure on offspring telomeres, or to any potential effects being buffered by the significant telomere elongation mechanisms that are thought to occur during the embryonic and larval stages of development. While this may suggest that C&R angling has a minimal intergenerational effect on offspring fitness, there have been numerous other reports of negative C&R effects, therefore we should still be aiming to mitigate and refine such practices, in order to minimize their impacts on fish populations.
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Affiliation(s)
- Eleanor Duncan
- School of Biodiversity, One Health and Veterinary Medicine, Graham Kerr Building, University of Glasgow, G12 8QQ Glasgow, UK
| | - Magdalene Papatheodoulou
- School of Biodiversity, One Health and Veterinary Medicine, Graham Kerr Building, University of Glasgow, G12 8QQ Glasgow, UK
| | - Neil B Metcalfe
- School of Biodiversity, One Health and Veterinary Medicine, Graham Kerr Building, University of Glasgow, G12 8QQ Glasgow, UK
| | - Darryl McLennan
- School of Biodiversity, One Health and Veterinary Medicine, Graham Kerr Building, University of Glasgow, G12 8QQ Glasgow, UK
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27
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Adegunsoye A, Newton CA, Oldham JM, Ley B, Lee CT, Linderholm AL, Chung JH, Garcia N, Zhang D, Vij R, Guzy R, Jablonski R, Bag R, Voogt RS, Ma SF, Sperling AI, Raghu G, Martinez FJ, Strek ME, Wolters PJ, Garcia CK, Pierce BL, Noth I. Telomere length associates with chronological age and mortality across racially diverse pulmonary fibrosis cohorts. Nat Commun 2023; 14:1489. [PMID: 36932145 PMCID: PMC10023792 DOI: 10.1038/s41467-023-37193-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2022] [Accepted: 03/06/2023] [Indexed: 03/19/2023] Open
Abstract
Pulmonary fibrosis (PF) is characterized by profound scarring and poor survival. We investigated the association of leukocyte telomere length (LTL) with chronological age and mortality across racially diverse PF cohorts. LTL measurements among participants with PF stratified by race/ethnicity were assessed in relation to age and all-cause mortality, and compared to controls. Generalized linear models were used to evaluate the age-LTL relationship, Cox proportional hazards models were used for hazard ratio estimation, and the Cochran-Armitage test was used to assess quartiles of LTL. Standardized LTL shortened with increasing chronological age; this association in controls was strengthened in PF (R = -0.28; P < 0.0001). In PF, age- and sex-adjusted LTL below the median consistently predicted worse mortality across all racial groups (White, HR = 2.21, 95% CI = 1.79-2.72; Black, HR = 2.22, 95% CI = 1.05-4.66; Hispanic, HR = 3.40, 95% CI = 1.88-6.14; and Asian, HR = 2.11, 95% CI = 0.55-8.23). LTL associates uniformly with chronological age and is a biomarker predictive of mortality in PF across racial groups.
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Affiliation(s)
- Ayodeji Adegunsoye
- Section of Pulmonary & Critical Care, Department of Medicine, The University of Chicago, Chicago, IL, USA.
- Committee on Genetics, Genomics and Systems Biology, The University of Chicago, Chicago, IL, USA.
| | - Chad A Newton
- Division of Pulmonary & Critical Care Medicine, Department of Internal Medicine, University of Texas Southwestern, Dallas, TX, USA
| | - Justin M Oldham
- Division of Pulmonary, Critical Care & Sleep Medicine, Department of Medicine, University of California, Davis, Sacramento, CA, USA
| | - Brett Ley
- Section of Pulmonary & Critical Care Medicine, Department of Medicine, University of California, San Francisco, CA, USA
| | - Cathryn T Lee
- Section of Pulmonary & Critical Care, Department of Medicine, The University of Chicago, Chicago, IL, USA
| | - Angela L Linderholm
- Division of Pulmonary, Critical Care & Sleep Medicine, Department of Medicine, University of California, Davis, Sacramento, CA, USA
| | - Jonathan H Chung
- Department of Radiology, The University of Chicago, Chicago, IL, USA
| | - Nicole Garcia
- Section of Pulmonary & Critical Care, Department of Medicine, The University of Chicago, Chicago, IL, USA
| | - Da Zhang
- Division of Pulmonary, Allergy and Critical Care Medicine, Columbia University Medical Center, New York, NY, USA
| | - Rekha Vij
- Section of Pulmonary & Critical Care, Department of Medicine, The University of Chicago, Chicago, IL, USA
| | - Robert Guzy
- Section of Pulmonary & Critical Care, Department of Medicine, The University of Chicago, Chicago, IL, USA
| | - Renea Jablonski
- Section of Pulmonary & Critical Care, Department of Medicine, The University of Chicago, Chicago, IL, USA
| | - Remzi Bag
- Section of Pulmonary & Critical Care, Department of Medicine, The University of Chicago, Chicago, IL, USA
| | - Rebecca S Voogt
- Section of Pulmonary & Critical Care, Department of Medicine, The University of Chicago, Chicago, IL, USA
| | - Shwu-Fan Ma
- Division of Pulmonary & Critical Care Medicine, Department of Medicine, University of Virginia, Charlottesville, VA, USA
| | - Anne I Sperling
- Section of Pulmonary & Critical Care, Department of Medicine, The University of Chicago, Chicago, IL, USA
| | - Ganesh Raghu
- Division of Pulmonary, Critical Care and Sleep Medicine, University of Washington Medical Center, Seattle, WA, USA
| | - Fernando J Martinez
- Pulmonary Critical Care Medicine, Weill Cornell Medicine, New York City, NY, USA
| | - Mary E Strek
- Section of Pulmonary & Critical Care, Department of Medicine, The University of Chicago, Chicago, IL, USA
| | - Paul J Wolters
- Section of Pulmonary & Critical Care Medicine, Department of Medicine, University of California, San Francisco, CA, USA
| | - Christine Kim Garcia
- Division of Pulmonary, Allergy and Critical Care Medicine, Columbia University Medical Center, New York, NY, USA
| | - Brandon L Pierce
- Department of Public Health Sciences, The University of Chicago, Chicago, IL, USA
- Department of Human Genetics, The University of Chicago, Chicago, IL, USA
| | - Imre Noth
- Division of Pulmonary & Critical Care Medicine, Department of Medicine, University of Virginia, Charlottesville, VA, USA
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Telomere Attrition in Chronic Kidney Diseases. Antioxidants (Basel) 2023; 12:antiox12030579. [PMID: 36978826 PMCID: PMC10045531 DOI: 10.3390/antiox12030579] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Revised: 02/21/2023] [Accepted: 02/23/2023] [Indexed: 03/02/2023] Open
Abstract
Telomeres are dynamic DNA nucleoprotein structures located at the end of chromosomes where they maintain genomic stability. Due to the end replication problem, telomeres shorten with each cell division. Critically short telomeres trigger cellular senescence, which contributes to various degenerative and age-related diseases, including chronic kidney diseases (CKDs). Additionally, other factors such as oxidative stress may also contribute to accelerated telomere shortening. Indeed, telomeres are highly susceptible to oxidative damage due to their high guanine content. Here, we provide a comprehensive review of studies examining telomere length (TL) in CKDs to highlight the association between TL and the development and progression of CKDs in humans. We then focus on studies investigating TL in patients receiving kidney replacement therapy. The mechanisms of the relationship between TL and CKD are not fully understood, but a shorter TL has been associated with decreased kidney function and the progression of nephropathy. Interestingly, telomere lengthening has been observed in some patients in longitudinal studies. Hemodialysis has been shown to accelerate telomere erosion, whereas the uremic milieu is not reversed even in kidney transplantation patients. Overall, this review aims to provide insights into the biological significance of telomere attrition in the pathophysiology of kidney disease, which may contribute to the development of new strategies for the management of patients with CKDs.
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29
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Pauleck S, Sinnott JA, Zheng YL, Gadalla SM, Viskochil R, Haaland B, Cawthon RM, Hoffmeister A, Hardikar S. Association of Telomere Length with Colorectal Cancer Risk and Prognosis: A Systematic Review and Meta-Analysis. Cancers (Basel) 2023; 15:1159. [PMID: 36831502 PMCID: PMC9954736 DOI: 10.3390/cancers15041159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 02/04/2023] [Accepted: 02/08/2023] [Indexed: 02/15/2023] Open
Abstract
(1) Background: Colorectal cancer risk and survival have previously been associated with telomere length in peripheral blood leukocytes and tumor tissue. A systematic review and meta-analysis of the literature was conducted. The PubMed, Embase, and Web of Science databases were searched through March 2022. (2) Methods: Relevant studies were identified through database searching following PRISMA guidelines. Risk estimates were extracted from identified studies; meta-analyses were conducted using random effects models. (3) Results: Fourteen studies were identified (eight on risk; six on survival) through systematic review. While no association was observed between circulating leukocyte telomere length and the risk of colorectal cancer [overall OR (95% CI) = 1.01 (0.82-1.24)], a worse survival for those with shorter telomeres in leukocytes and longer telomeres in tumor tissues was observed [Quartile1/Quartile2-4 overall HR (95% CI) = 1.41 (0.26-7.59) and 0.82 (0.69-0.98), respectively]. (4) Conclusions: Although there was no association with colorectal cancer risk, a poorer survival was observed among those with shorter leukocyte telomere length. Future larger studies evaluating a potentially non-linear relationship between telomeres and colorectal cancer are needed.
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Affiliation(s)
- Svenja Pauleck
- Huntsman Cancer Institute, University of Utah, Salt Lake City, UT 84112, USA
- Medical Department II, Division of Gastroenterology, University of Leipzig Medical Center, 04103 Leipzig, Germany
| | - Jennifer A. Sinnott
- Huntsman Cancer Institute, University of Utah, Salt Lake City, UT 84112, USA
- Department of Pediatrics, University of Utah, Salt Lake City, UT 84108, USA
- Department of Statistics, The Ohio State University, Columbus, OH 43210, USA
| | - Yun-Ling Zheng
- Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington, DC 20057, USA
| | - Shahinaz M. Gadalla
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, MD 20892, USA
| | - Richard Viskochil
- Huntsman Cancer Institute, University of Utah, Salt Lake City, UT 84112, USA
- Department of Population Health Sciences, University of Utah, Salt Lake City, UT 84108, USA
| | - Benjamin Haaland
- Huntsman Cancer Institute, University of Utah, Salt Lake City, UT 84112, USA
- Department of Population Health Sciences, University of Utah, Salt Lake City, UT 84108, USA
| | - Richard M. Cawthon
- Department of Human Genetics, University of Utah, Salt Lake City, UT 84108, USA
| | - Albrecht Hoffmeister
- Medical Department II, Division of Gastroenterology, University of Leipzig Medical Center, 04103 Leipzig, Germany
| | - Sheetal Hardikar
- Huntsman Cancer Institute, University of Utah, Salt Lake City, UT 84112, USA
- Department of Population Health Sciences, University of Utah, Salt Lake City, UT 84108, USA
- Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA
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30
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Hallmarks and Biomarkers of Skin Senescence: An Updated Review of Skin Senotherapeutics. Antioxidants (Basel) 2023; 12:antiox12020444. [PMID: 36830002 PMCID: PMC9952625 DOI: 10.3390/antiox12020444] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2023] [Revised: 02/06/2023] [Accepted: 02/07/2023] [Indexed: 02/12/2023] Open
Abstract
Aging is a complex process characterized by an ongoing decline in physiological functions, leading to degenerative diseases and an increased probability of death. Cellular senescence has been typically considered as an anti-proliferative process; however, the chronic accumulation of senescent cells contributes to tissue dysfunction and aging. In this review, we discuss some of the most important hallmarks and biomarkers of cellular senescence with a special focus on skin biomarkers, reactive oxygen species (ROS), and senotherapeutic strategies to eliminate or prevent senescence. Although most of them are not exclusive to senescence, the expression of the senescence-associated beta-galactosidase (SA-β-gal) enzyme seems to be the most reliable biomarker for distinguishing senescent cells from those arrested in the cell cycle. The presence of a stable DNA damage response (DDR) and the accumulation of senescence-associated secretory phenotype (SASP) mediators and ROS are the most representative hallmarks for senescence. Senotherapeutics based on natural compounds such as quercetin, naringenin, and apigenin have shown promising results regarding SASP reduction. These compounds seem to prevent the accumulation of senescent cells, most likely through the inhibition of pro-survival signaling pathways. Although studies are still required to verify their short- and long-term effects, these therapies may be an effective strategy for skin aging.
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Sumner JA, Cleveland S, Chen T, Gradus JL. Psychological and biological mechanisms linking trauma with cardiovascular disease risk. Transl Psychiatry 2023; 13:25. [PMID: 36707505 PMCID: PMC9883529 DOI: 10.1038/s41398-023-02330-8] [Citation(s) in RCA: 18] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/31/2022] [Revised: 01/18/2023] [Accepted: 01/20/2023] [Indexed: 01/28/2023] Open
Abstract
Cardiovascular disease (CVD) is the leading cause of death and disability worldwide, and experiences of psychological trauma have been associated with subsequent CVD onset. Identifying key pathways connecting trauma with CVD has the potential to inform more targeted screening and intervention efforts to offset elevated cardiovascular risk. In this narrative review, we summarize the evidence for key psychological and biological mechanisms linking experiences of trauma with CVD risk. Additionally, we describe various methodologies for measuring these mechanisms in an effort to inform future research related to potential pathways. With regard to mechanisms involving posttraumatic psychopathology, the vast majority of research on psychological distress after trauma and CVD has focused on posttraumatic stress disorder (PTSD), even though posttraumatic psychopathology can manifest in other ways as well. Substantial evidence suggests that PTSD predicts the onset of a range of cardiovascular outcomes in trauma-exposed men and women, yet more research is needed to better understand posttraumatic psychopathology more comprehensively and how it may relate to CVD. Further, dysregulation of numerous biological systems may occur after trauma and in the presence of posttraumatic psychopathology; these processes of immune system dysregulation and elevated inflammation, oxidative stress, mitochondrial dysfunction, renin-angiotensin system dysregulation, and accelerated biological aging may all contribute to subsequent cardiovascular risk, although more research on these pathways in the context of traumatic stress is needed. Given that many of these mechanisms are closely intertwined, future research using a systems biology approach may prove fruitful for elucidating how processes unfold to contribute to CVD after trauma.
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Affiliation(s)
- Jennifer A Sumner
- Department of Psychology, University of California, Los Angeles, Los Angeles, CA, USA.
| | - Shiloh Cleveland
- Department of Psychology, University of California, Los Angeles, Los Angeles, CA, USA
| | - Tiffany Chen
- Department of Psychology, University of California, Los Angeles, Los Angeles, CA, USA
| | - Jaimie L Gradus
- Department of Epidemiology, Boston University School of Public Health, Boston, MA, USA
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Raftopoulou C, Abawi O, Sommer G, Binou M, Paltoglou G, Flück CE, van den Akker ELT, Charmandari E. Leukocyte Telomere Length in Children With Congenital Adrenal Hyperplasia. J Clin Endocrinol Metab 2023; 108:443-452. [PMID: 36181470 DOI: 10.1210/clinem/dgac560] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Revised: 09/21/2022] [Indexed: 01/20/2023]
Abstract
CONTEXT Exposure to chronic stress and hypercortisolism is associated with decreased leukocyte telomere length (LTL), a marker for biological aging and cardiovascular disease. Children with congenital adrenal hyperplasia (CAH) are treated with glucocorticoids. OBJECTIVE To investigate LTL in children with CAH. METHODS In this prospective observational cohort study, conducted at 4 academic pediatric endocrinology outpatient clinics, children with genetically confirmed CAH were assessed at 2 follow-up visits (mean 4.1 ± 0.7 months apart). At each visit, LTL was determined by quantitative real-time PCR. All subjects underwent detailed clinical and endocrinologic evaluation and were classified as undertreated, optimally treated, or overtreated, accordingly. The influence of clinical factors on LTL was investigated using linear mixed models adjusted for age, sex, and BMI-z. RESULTS We studied 76 patients, of whom 31 (41%) were girls, 63 (83%) had classic CAH, 67 (88%) received hydrocortisone, and 8 (11%) prednisolone. Median age at first visit was 12.0 years (IQR, 6.3-15.1), and median BMI-z was 0.51 (IQR, -0.12 to 1.43). LTL was shorter in patients with classic vs nonclassic CAH (-0.29, P = 0.012), in overtreated than in optimally treated patients (-0.07, P = 0.002), and patients receiving prednisolone compared with hydrocortisone (-0.34, P < 0.001). LTL was not associated with undertreatment or daily hydrocortisone-equivalent dose (P > 0.05). CONCLUSION LTL is shorter in patients with classic than nonclassic CAH, and in those who are overtreated with hydrocortisone or treated with long-acting glucocorticoids. These findings may be attributed to chronic exposure to supraphysiologic glucocorticoid concentrations and indicate that LTL may be used as a biomarker for monitoring glucocorticoid treatment.
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Affiliation(s)
- Christina Raftopoulou
- Division of Endocrinology, Metabolism and Diabetes, First Department of Pediatrics, National and Kapodistrian University of Athens Medical School, 'Aghia Sophia' Children's Hospital, Athens 11527, Greece
- Division of Endocrinology and Metabolism, Center for Clinical, Experimental Surgery and Translational Research, Biomedical Research Foundation of the Academy of Athens, Athens 11527, Greece
| | - Ozair Abawi
- Division of Endocrinology, Department of Pediatrics, Erasmus MC-Sophia Children's Hospital, University Medical Center Rotterdam, Rotterdam 3000 CA, The Netherlands
| | - Grit Sommer
- Pediatric Endocrinology, Diabetology and Metabolism, Department of Pediatrics, Bern and Department of BioMedical Research, University Hospital Inselspital, University of Bern, Bern 3010, Switzerland
| | - Maria Binou
- Division of Endocrinology, Metabolism and Diabetes, First Department of Pediatrics, National and Kapodistrian University of Athens Medical School, 'Aghia Sophia' Children's Hospital, Athens 11527, Greece
- Division of Endocrinology and Metabolism, Center for Clinical, Experimental Surgery and Translational Research, Biomedical Research Foundation of the Academy of Athens, Athens 11527, Greece
| | - George Paltoglou
- Division of Endocrinology, Metabolism and Diabetes, First Department of Pediatrics, National and Kapodistrian University of Athens Medical School, 'Aghia Sophia' Children's Hospital, Athens 11527, Greece
- Division of Endocrinology and Metabolism, Center for Clinical, Experimental Surgery and Translational Research, Biomedical Research Foundation of the Academy of Athens, Athens 11527, Greece
| | - Christa E Flück
- Pediatric Endocrinology, Diabetology and Metabolism, Department of Pediatrics, Bern and Department of BioMedical Research, University Hospital Inselspital, University of Bern, Bern 3010, Switzerland
| | - Erica L T van den Akker
- Division of Endocrinology, Department of Pediatrics, Erasmus MC-Sophia Children's Hospital, University Medical Center Rotterdam, Rotterdam 3000 CA, The Netherlands
| | - E Charmandari
- Division of Endocrinology, Metabolism and Diabetes, First Department of Pediatrics, National and Kapodistrian University of Athens Medical School, 'Aghia Sophia' Children's Hospital, Athens 11527, Greece
- Division of Endocrinology and Metabolism, Center for Clinical, Experimental Surgery and Translational Research, Biomedical Research Foundation of the Academy of Athens, Athens 11527, Greece
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Zhang Y, Liu J, Li X, Zhou G, Sang Y, Zhang M, Gao L, Xue J, Zhao M, Yu H, Zhou X. Dietary selenium excess affected spermatogenesis via DNA damage and telomere-related cell senescence and apoptosis in mice. Food Chem Toxicol 2023; 171:113556. [DOI: 10.1016/j.fct.2022.113556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2022] [Revised: 11/21/2022] [Accepted: 12/07/2022] [Indexed: 12/14/2022]
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Madsen T, Klaassen M, Raven N, Dujon AM, Jennings G, Thomas F, Hamede R, Ujvari B. Transmissible cancer and longitudinal telomere dynamics in Tasmanian devils (Sarcophilus harrisii). Mol Ecol 2022; 31:6531-6540. [PMID: 36205590 PMCID: PMC10091798 DOI: 10.1111/mec.16721] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Accepted: 09/21/2022] [Indexed: 01/13/2023]
Abstract
A plethora of intrinsic and environmental factors have been shown to influence the length of telomeres, the protector of chromosome ends. Despite the growing interest in infection-telomere interactions, there is very limited knowledge on how transmissible cancers influence telomere maintenance. An emblematic example of transmissible cancer occurs in the Tasmanian devil (Sarcophilus harrisii), whose populations have been dramatically reduced by infectious cancer cells. To investigate associations between telomere dynamics and the transmissible cancer, we used longitudinal data from a Tasmanian devil population that has been exposed to the disease for over 15 years. We detected substantial temporal variation in individual telomere length (TL), and a positive significant association between TL and age, as well as a marginally significant trend for devils with devil facial tumour disease (DFTD) having longer telomeres. A proportional hazard analysis yielded no significant effect of TL on the development of DFTD. Like previous studies, we show the complexity that TL dynamics may exhibit across the lifetime of organisms. Our work highlights the importance of long-term longitudinal sampling for understanding the effects of wildlife diseases on TL.
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Affiliation(s)
- Thomas Madsen
- School of Life and Environmental Sciences, Centre for Integrative Ecology, Deakin University, Geelong, Victoria, Australia
| | - Marcel Klaassen
- School of Life and Environmental Sciences, Centre for Integrative Ecology, Deakin University, Geelong, Victoria, Australia
| | - Nynke Raven
- School of Life and Environmental Sciences, Centre for Integrative Ecology, Deakin University, Geelong, Victoria, Australia
| | - Antoine M Dujon
- School of Life and Environmental Sciences, Centre for Integrative Ecology, Deakin University, Geelong, Victoria, Australia.,CREEC, UMR IRD 224-CNRS 5290-Université de Montpellier, Montpellier, France
| | - Geordie Jennings
- School of Life and Environmental Sciences, Centre for Integrative Ecology, Deakin University, Geelong, Victoria, Australia
| | - Frédéric Thomas
- CREEC, UMR IRD 224-CNRS 5290-Université de Montpellier, Montpellier, France.,MIVEGEC, IRD, CNRS, Université Montpellier, Montpellier, France
| | - Rodrigo Hamede
- School of Natural Sciences, University of Tasmania, Hobart, Tasmania, Australia
| | - Beata Ujvari
- School of Life and Environmental Sciences, Centre for Integrative Ecology, Deakin University, Geelong, Victoria, Australia
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Schellnegger M, Lin AC, Hammer N, Kamolz LP. Physical Activity on Telomere Length as a Biomarker for Aging: A Systematic Review. SPORTS MEDICINE - OPEN 2022; 8:111. [PMID: 36057868 PMCID: PMC9441412 DOI: 10.1186/s40798-022-00503-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Accepted: 08/07/2022] [Indexed: 11/25/2022]
Abstract
Background Overall life expectancy continues to rise, approaching 80 years of age in several developed countries. However, healthy life expectancy lags far behind, which has, in turn, contributed to increasing costs in healthcare. One way to improve health and attenuate the socio-economic impact of an aging population is to increase overall fitness through physical activity. Telomere attrition or shortening is a well-known molecular marker in aging. As such, several studies have focused on whether exercise influences health and aging through telomere biology. This systematic review examines the recent literature on the effect of physical activity on telomere length (TL) and/or telomerase activity as molecular markers of aging. Methods A focused search was performed in the databases PubMed and Web of Science for retrieving relevant articles over the past ten years. The search contained the following keywords: exercise, sport, physical activity, fitness, sedentary, physical inactivity, telomere, telomere length, t/s ratio, and telomerase. PRISMA guidelines for systematic reviews were observed. Results A total of 43 articles were identified and categorized into randomized controlled trials (RCT), observational or interventional studies. RCTs (n = 8) showed inconsistent findings of increased TL length with physical activity in, e.g. obese, post-menopausal women. In comparison with a predominantly sedentary lifestyle, observational studies (n = 27) showed significantly longer TL with exercise of moderate to vigorous intensity; however, there was no consensus on the duration and type of physical activity and training modality. Interventional studies (n = 8) also showed similar findings of significantly longer TL prior to exercise intervention; however, these studies had smaller numbers of enrolled participants (mostly of high-performance athletes), and the physical activities covered a range of exercise intensities and duration. Amongst the selected studies, aerobic training of moderate to vigorous intensity is most prevalent. For telomere biology analysis, TL was determined mainly from leukocytes using qPCR. In some cases, especially in RCT and interventional studies, different sample types such as saliva, sperm, and muscle biopsies were analyzed; different leukocyte cell types and potential genetic markers in regulating telomere biology were also investigated. Conclusions Taken together, physical activity with regular aerobic training of moderate to vigorous intensity appears to help preserve TL. However, the optimal intensity, duration of physical activity, as well as type of exercise still need to be further elucidated. Along with TL or telomerase activity, participants’ fitness level, the type of physical activity, and training modality should be assessed at different time points in future studies, with the plan for long-term follow-up. Reducing the amount of sedentary behavior may have a positive effect of preserving and increasing TL. Further molecular characterization of telomere biology in different cell types and tissues is required in order to draw definitive causal conclusions on how physical activity affects TL and aging.
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Remot F, Ronget V, Froy H, Rey B, Gaillard JM, Nussey DH, Lemaitre JF. Decline in telomere length with increasing age across nonhuman vertebrates: A meta-analysis. Mol Ecol 2022; 31:5917-5932. [PMID: 34437736 DOI: 10.1111/mec.16145] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Revised: 08/17/2021] [Accepted: 08/20/2021] [Indexed: 02/06/2023]
Abstract
The prediction that telomere length (TL) shortens with increasing age is a major element in considering the role of telomeres as a key player in evolution. While telomere attrition is found in humans both in vitro and in vivo, the increasing number of studies reporting diverse age-specific patterns of TL challenges the hypothesis of a universal decline of TL with increasing age. Here, we performed a meta-analysis to estimate the relationship between TL and age across 175 estimates encompassing 98 species of vertebrates. We found that, on average, TL does decline with increasing age during adulthood. However, this decline was weak and variable across vertebrate classes, and we also found evidence for a publication bias that might weaken our current evidence of decreasing TL with increasing age. We found no evidence for a faster decline in TL with increasing age when considering the juvenile stage (from birth to age at first reproduction) compared to the adult stage. Heterogeneity in TL ageing rates was explained by the method used to measure telomeres: detectable TL declines with increasing age were found only among studies using TRF with in-gel hybridisation and qFISH methods, but not in studies using qPCR and Southern blot-based TRF methods. While we confirmed that TL declines with increasing age in most adult vertebrates, our results identify an influence of telomere measurement methodology, which highlights the need to examine more thoroughly the effect of the method of measurement on TL estimates.
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Affiliation(s)
- Florentin Remot
- Laboratoire de Biométrie et Biologie Evolutive, UMR5558, CNRS, Université de Lyon, Université Lyon 1, Villeurbanne, France
| | - Victor Ronget
- Unité Eco-anthropologie (EA), Muséum National d'Histoire Naturelle, CNRS, Université Paris Diderot, Paris, France
| | - Hannah Froy
- Institute of Evolutionary Biology, University of Edinburgh, Edinburgh, UK.,Centre for Biodiversity Dynamics, Norwegian University of Science and Technology, Trondheim, Norway
| | - Benjamin Rey
- Laboratoire de Biométrie et Biologie Evolutive, UMR5558, CNRS, Université de Lyon, Université Lyon 1, Villeurbanne, France
| | - Jean-Michel Gaillard
- Laboratoire de Biométrie et Biologie Evolutive, UMR5558, CNRS, Université de Lyon, Université Lyon 1, Villeurbanne, France
| | - Daniel H Nussey
- Institute of Evolutionary Biology, University of Edinburgh, Edinburgh, UK
| | - Jean-François Lemaitre
- Laboratoire de Biométrie et Biologie Evolutive, UMR5558, CNRS, Université de Lyon, Université Lyon 1, Villeurbanne, France
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In Vitro Determination of the Skin Anti-Aging Potential of Four-Component Plant-Based Ingredient. Molecules 2022; 27:molecules27228101. [PMID: 36432202 PMCID: PMC9697998 DOI: 10.3390/molecules27228101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Revised: 11/11/2022] [Accepted: 11/16/2022] [Indexed: 11/23/2022] Open
Abstract
The beauty industry is actively searching for solutions to prevent skin aging. Some of the crucial elements protecting cells from the aging process are telomere shortening, telomerase expression, cell senescence, and homeostasis of the redox system. Modification of these factors using natural antioxidants is an appealing way to support healthy skin aging. Therefore, in this study, we sought to investigate the antiaging efficacy of a specific combination of four botanical extracts (pomegranate, sweet orange, Cistanche and Centella asiatica) with proven antioxidant properties. To this end, normal human dermal fibroblasts were used as a cell model and the following studies were performed: cell proliferation was established by means of the MTT assay and the intracellular ROS levels in stress-induced premature senescence fibroblasts; telomere length measurement was performed under standard cell culture conditions using qPCR and under oxidative stress conditions using a variation of the Q-FISH technique; telomerase activity was examined by means of Q-TRAP; and AGE quantification was completed by means of ELISA assay in UV-irradiated fibroblasts. As a result, the botanical blend significantly reversed the H2O2-induced decrease in cell viability and reduced H2O2-induced ROS. Additionally, the presence of the botanical ingredient reduced the telomere shortening rate in both stressed and non-stressed replicating fibroblasts, and under oxidative stress conditions, the fibroblasts presented a higher median and 20th percentile telomere length, as well as a lower percentage of short telomeres (<3 Kbp) compared with untreated fibroblasts. Furthermore, the ingredient transiently increased relative telomerase activity after 24 h and prevented the accumulation of UVR-induced glycated species. The results support the potential use of this four-component plant-based ingredient as an antiaging agent.
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Bolhuis E, Belsky J, Frankenhuis WE, Shalev I, Hastings WJ, Tollenaar MS, O’Donnell KJ, McGill MG, Pokhvisneva I, Lin DT, MacIsaac JL, Kobor MS, de Weerth C, Beijers R. Attachment insecurity and the biological embedding of reproductive strategies: Investigating the role of cellular aging. Biol Psychol 2022; 175:108446. [DOI: 10.1016/j.biopsycho.2022.108446] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Revised: 10/15/2022] [Accepted: 10/16/2022] [Indexed: 11/02/2022]
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Ramírez-Sanabria M, Martínez-Magaña J, Nicolini-Sánchez H, Guzmán-Sánchez R, Genis-Mendoza AD. [Association between telomere length and cognitive impairment in older adults]. Rev Esp Geriatr Gerontol 2022; 57:320-324. [PMID: 36319501 DOI: 10.1016/j.regg.2022.09.006] [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: 05/18/2022] [Revised: 09/06/2022] [Accepted: 09/19/2022] [Indexed: 12/04/2022]
Abstract
INTRODUCTION Cognitive impairment is a transition stage between normal aging and dementia, the prevalence of last one increases with age; the damage of the functions and physical integrity, places the older adult in a greater susceptibility to get sick. Telomere length is a hallmark of aging to characterize this phenotype, as well as a biomarker that reflects the underlying state of the cell. In this work, the relative length of telomeres in older adults with cognitive impairment was correlated. MATERIAL AND METHODS Observational-analytical study, in samples of adult patients older than 65 years with and without cognitive impairment, in whom the relative length of telomeres was measured. RESULTS Ninety samples of older adults were included in the study and in the association analysis according to multivariate logistic models, cognitive impairment showed almost five times more risk for telomere shortening in relation to the presence of the diagnosis of cognitive impairment (Odds ratio 4.88, p=0.027). CONCLUSIONS When correlating the relative length of telomeres in older adults diagnosed with cognitive impairment, this association was confirmed for shorter.
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Affiliation(s)
- Martha Ramírez-Sanabria
- Alta Especialidad en Medicina Genómica, Instituto Nacional de Medicina Genómica, Ciudad de México, México
| | - Jaime Martínez-Magaña
- Laboratorio de Genómica de Enfermedades Psiquiátricas y Neurodegenerativas, Instituto Nacional de Medicina Genómica, Ciudad de México, México
| | - Humberto Nicolini-Sánchez
- Alta Especialidad en Medicina Genómica, Instituto Nacional de Medicina Genómica, Ciudad de México, México
| | - Rafael Guzmán-Sánchez
- Alta Especialidad en Medicina Genómica, Instituto Nacional de Medicina Genómica, Ciudad de México, México
| | - Alma Delia Genis-Mendoza
- Hospital Psiquiátrico Innfantil Dr. Juan N. Navarro, Servicios de Atención Psiquiétrica, Secretaría de Salud, Ciudad de México, México.
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A Y, Shi S, Sun S, Jing Y, Li Z, Zhang X, Li X, Wu F. Telomerase activity, relative telomere length, and longevity in alfalfa ( Medicago sativa L.). PeerJ 2022. [DOI: 10.7717/peerj.14102] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Background
Medicago sativa L. ‘Qingshui’ is a valuable rhizomatous forage germplasm resource. We previously crossed Qingshui with the high-yielding Medicago sativa L. ‘WL168’ and obtained novel rhizomatous hybrid strains (RSA-01, RSA-02, and RSA-03). Telomere dynamics are more accurate predictors of survival and mortality than chronological age. Based on telomere analyses, we aimed to identify alfalfa varieties with increased stamina and longevity for the establishment of artificial grazing grasslands.
Methods
In this study, we performed longitudinal analysis of telomerase activity and relative telomere length in five alfalfa varieties (Qingshui, WL168, RSA-01, RSA-02, and RSA-03) at the age of 1 year and 5 years to examine the relationship among telomerase activity, rate of change in relative telomere length, and longevity. We further aimed to evaluate the longevity of the examined varieties. Telomerase activity and relative telomere length were measured using enzyme-linked immunosorbent assay and real-time polymerase chain reaction, respectively.
Results
We observed significant differences in telomerase activity between plants aged 1 year and those aged 5 years in all varieties except WL168, and the rate of change in telomerase activity does not differ reliably with age. As telomerase activity and relative telomere length are complex phenomena, further studies examining the molecular mechanisms of telomere-related proteins are needed. Relative telomere lengths of Qingshui, WL168, RSA-01, RSA-02, and RSA-03 in plants aged 5 years were higher than those aged 1 year by 11.41, 11.24, 9.21, 10.23, and 11.41, respectively. Relative telomere length of alfalfa tended to increase with age. Accordingly, alfalfa varieties can be classified according to rate of change in relative telomere length as long-lived (Qingshui, WL168, and RSA-03), medium-lived (RSA-02) and short-lived (RSA-01). The differences in relative telomere length distances of Qingshui, WL168, RSA-01, RSA-02, and RSA-03 between plants aged 1 and 5 years were 10.40, 13.02, 12.22, 11.22, and 13.25, respectively. The largest difference in relative telomere length was found between Qingshui and RSA-02 at 2.20. Our findings demonstrated that relative telomere length in alfalfa is influenced by genetic variation and age, with age exerting a greater effect.
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Affiliation(s)
- Yun A
- Gansu Agricultural University, Lanzhou, China
| | - Shangli Shi
- Gansu Agricultural University, Lanzhou, China
| | | | | | - Zili Li
- Gansu Agricultural University, Lanzhou, China
| | | | - Xiaolong Li
- Gansu Agricultural University, Lanzhou, China
| | - Fang Wu
- Gansu Agricultural University, Lanzhou, China
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Aoulad Fares D, Wiegel RE, Eggink AJ, Willemsen SP, van Meurs JBJ, Steegers-Theunissen RPM. Shorter periconception maternal telomere length and the risk of congenital cardiac outflow defects in the offspring. Eur J Clin Invest 2022; 52:e13784. [PMID: 35347712 PMCID: PMC9540113 DOI: 10.1111/eci.13784] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Revised: 03/22/2022] [Accepted: 03/27/2022] [Indexed: 11/30/2022]
Abstract
BACKGROUND Congenital cardiac outflow defects (COD) are the largest group of congenital heart defects, with ventricular septal defect (VSD) as the most prevalent phenotype. Increased maternal age, excessive oxidative stress and inflammation are involved in the pathophysiology of COD and enhance telomere length (TL) shortening. We investigated the association between periconception maternal TL and the risk of having a child with COD. METHODS From a multicentre case-control trial, 306 case mothers of a child with COD and 424 control mothers of a child without a congenital malformation were selected. Relative TL was measured by qPCR. Multivariable logistic regression was used to compute crude and adjusted odds ratios, per standard deviation decrease, between maternal T/S ratio and COD and VSD risk. Adjustments were made for maternal age. Additional adjustments were made in a second model. RESULTS Shorter maternal relative TL was significantly associated with an OR of 1.29 (95% CI 1.04-1.61), p = .02, for the risk of VSD in offspring, which remained significant after an adjustment for maternal age (adjOR 1.25(95% CI 1.01-1.55), p = .04). No association between maternal TL and the risk of overall COD in offspring was observed. CONCLUSION Shorter maternal relative TL is associated with an approximately 1.3-OR for the risk, per SD in relative TL shortening, of VSD in the offspring. These findings need further confirmation in other studies on the predictive value of maternal TL.
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Affiliation(s)
- Damiat Aoulad Fares
- Department of Obstetrics and Gynaecology, Erasmus MC, University Medical Centre, Rotterdam, the Netherlands
| | - Rosalieke E Wiegel
- Department of Obstetrics and Gynaecology, Erasmus MC, University Medical Centre, Rotterdam, the Netherlands
| | - Alex J Eggink
- Department of Obstetrics and Gynaecology, Erasmus MC, University Medical Centre, Rotterdam, the Netherlands
| | - Sten P Willemsen
- Department of Obstetrics and Gynaecology, Erasmus MC, University Medical Centre, Rotterdam, the Netherlands.,Department of Biostatistics, Erasmus MC, University Medical Centre, Rotterdam, the Netherlands
| | - Joyce B J van Meurs
- Department of Internal Medicine, Erasmus MC, University Medical Centre, Rotterdam, the Netherlands
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Scarabino D, Veneziano L, Fiore A, Nethisinghe S, Mantuano E, Garcia-Moreno H, Bellucci G, Solanky N, Morello M, Zanni G, Corbo RM, Giunti P. Leukocyte Telomere Length Variability as a Potential Biomarker in Patients with PolyQ Diseases. Antioxidants (Basel) 2022; 11:antiox11081436. [PMID: 35892638 PMCID: PMC9332235 DOI: 10.3390/antiox11081436] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Revised: 07/15/2022] [Accepted: 07/20/2022] [Indexed: 12/02/2022] Open
Abstract
SCA1, SCA2, and SCA3 are the most common forms of SCAs among the polyglutamine disorders, which include Huntington’s Disease (HD). We investigated the relationship between leukocyte telomere length (LTL) and the phenotype of SCA1, SCA2, and SCA3, comparing them with HD. The results showed that LTL was significantly reduced in SCA1 and SCA3 patients, while LTL was significantly longer in SCA2 patients. A significant negative relationship between LTL and age was observed in SCA1 but not in SCA2 subjects. LTL of SCA3 patients depend on both patient’s age and disease duration. The number of CAG repeats did not affect LTL in the three SCAs. Since LTL is considered an indirect marker of an inflammatory response and oxidative damage, our data suggest that in SCA1 inflammation is present already at an early stage of disease similar to in HD, while in SCA3 inflammation and impaired antioxidative processes are associated with disease progression. Interestingly, in SCA2, contrary to SCA1 and SCA3, the length of leukocyte telomeres does not reduce with age. We have observed that SCAs and HD show a differing behavior in LTL for each subtype, which could constitute relevant biomarkers if confirmed in larger cohorts and longitudinal studies.
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Affiliation(s)
- Daniela Scarabino
- Institute of Molecular Biology and Pathology, National Research Council, 00185 Rome, Italy
- Correspondence: (D.S.); (L.V.)
| | - Liana Veneziano
- Institute of Translational Pharmacology, National Research Council, 00133 Rome, Italy;
- Correspondence: (D.S.); (L.V.)
| | - Alessia Fiore
- Department of Biology and Biotechnology, Sapienza University of Rome, 00185 Rome, Italy; (A.F.); (R.M.C.)
| | - Suran Nethisinghe
- Ataxia Center, Department of Clinical and Movement Neuroscience, UCL Queen Square Institute of Neurology, University College, London WC1N 3BG, UK; (S.N.); (H.G.-M.); (N.S.); (P.G.)
| | - Elide Mantuano
- Institute of Translational Pharmacology, National Research Council, 00133 Rome, Italy;
| | - Hector Garcia-Moreno
- Ataxia Center, Department of Clinical and Movement Neuroscience, UCL Queen Square Institute of Neurology, University College, London WC1N 3BG, UK; (S.N.); (H.G.-M.); (N.S.); (P.G.)
| | - Gianmarco Bellucci
- Department of Neurosciences, Mental Health and Sensory Organs, Centre for Experimental Neurological Therapies (CENTERS), Sapienza University of Rome, 00185 Rome, Italy;
| | - Nita Solanky
- Ataxia Center, Department of Clinical and Movement Neuroscience, UCL Queen Square Institute of Neurology, University College, London WC1N 3BG, UK; (S.N.); (H.G.-M.); (N.S.); (P.G.)
| | - Maria Morello
- Department of Experimental Medicine and Surgery, Tor Vergata University, 00133 Rome, Italy;
| | - Ginevra Zanni
- Unit of Neuromuscolar and Neurodegenerative Disorders, Department of Neurosciences, Bambino Gesù Children’s Research Hospital, IRCCS, 00100 Rome, Italy;
| | - Rosa Maria Corbo
- Department of Biology and Biotechnology, Sapienza University of Rome, 00185 Rome, Italy; (A.F.); (R.M.C.)
| | - Paola Giunti
- Ataxia Center, Department of Clinical and Movement Neuroscience, UCL Queen Square Institute of Neurology, University College, London WC1N 3BG, UK; (S.N.); (H.G.-M.); (N.S.); (P.G.)
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Courtney MG, Roberts J, Godde K. How social/environmental determinants and inflammation affect salivary telomere length among middle-older adults in the health and retirement study. Sci Rep 2022; 12:8882. [PMID: 35614304 PMCID: PMC9133070 DOI: 10.1038/s41598-022-12742-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Accepted: 05/13/2022] [Indexed: 12/05/2022] Open
Abstract
Social epidemiology posits that chronic stress from social determinants will lead to a prolonged inflammatory response that may induce accelerated aging as measured, for example, through telomere length (TL). In this paper, we hypothesize variables across demographic, health-related, and contextual/environmental domains influence the body’s stress response, increase inflammation (as measured through high-sensitivity C-reactive protein (hs-CRP)), and thereby lead to shortening of telomeres. This population-based research uses data from the 2008 Health and Retirement Study on participants ages ≤ 54–95 + years, estimating logistic regression and Cox proportional hazards models of variables (with and without confounders) across the domains on shortened TL. A mediation analysis is also conducted. Contrary to expectations, hs-CRP is not associated with risk of shortened TL. Rather, factors related to accessing health care, underlying conditions of frailty, and social inequality appear to predict risk of shorter TL, and models demonstrate considerable confounding. Further, hs-CRP is not a mediator for TL. Therefore, the social determinants of health examined do not appear to follow an inflammatory pathway for shortened TL. The finding of a relationship to social determinants affecting access to health care and medical conditions underscores the need to address social determinants alongside primary care when examining health inequities.
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Affiliation(s)
| | | | - Kanya Godde
- University of La Verne, 1950 Third St., La Verne, CA, USA.
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Rybicki BA, Sadasivan SM, Chen Y, Loveless I, Gupta NS, Chitale DA, Williamson SR, Rundle AG, Tang DL. Race Differences in Telomere Length in Benign Prostate Biopsies and Subsequent Risk of Prostate Cancer. Cancer Epidemiol Biomarkers Prev 2022; 31:991-998. [PMID: 35247880 DOI: 10.1158/1055-9965.epi-21-1221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Revised: 01/31/2022] [Accepted: 03/01/2022] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND Telomere shortening is linked to aging and may be associated with increased risk for cancer. Most cancer studies have used telomere length in leukocytes rather than in the target tissue of cancer origin. METHODS A case-control study of 524 case-control pairs with a benign prostate biopsy nested within a historical cohort of 10,478 men was conducted to determine whether premalignant prostate telomere length (assessed using a modified qRT-PCR) is associated with prostate cancer risk. RESULTS Telomere lengths in benign prostate biopsies of cases versus controls were similar (1.46 ± 0.38 vs. 1.45 ± 0.42; P = 0.49). African American (AA) men had significantly shorter telomeres compared with White men (1.51 ± 0.38 vs. 1.63 ± 0.39; P < 0.0001). In race-stratified analyses, increasing telomere length was more strongly associated with prostate cancer risk in White men, wherein those with telomere length in the highest quartile had 1.9-fold greater adjusted risk of prostate cancer compared with men with prostate telomere lengths in the lowest quartile [OR = 1.90; 95% confidence interval (CI) = 1.08-3.36]. Men in the highest telomere length quartile also had a greater risk of aggressive prostate cancer compared with men with telomere lengths in the lowest quartile (OR = 2.78; 95% CI = 1.25-6.19). CONCLUSIONS White men have longer telomeres in benign prostate tissue compared with AA men, and those with the longest telomeres may be at increased risk for prostate cancer, particularly the more aggressive form of the disease. IMPACT Race-specific telomere length measures may be an early biomarker of aggressive prostate cancer.
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Affiliation(s)
- Benjamin A Rybicki
- Department of Public Health Sciences, Henry Ford Hospital, Detroit, Michigan
| | - Sudha M Sadasivan
- Department of Public Health Sciences, Henry Ford Hospital, Detroit, Michigan
| | - Yalei Chen
- Department of Public Health Sciences, Henry Ford Hospital, Detroit, Michigan
| | - Ian Loveless
- Department of Public Health Sciences, Henry Ford Hospital, Detroit, Michigan
| | - Nilesh S Gupta
- Department of Pathology, Henry Ford Hospital, Detroit, Michigan
| | | | | | - Andrew G Rundle
- Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, New York
| | - Deliang L Tang
- Department of Environmental Heath Sciences, Mailman School of Public Health, Columbia University, New York, New York
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45
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Association between Physical Activity and Telomere Length in Women with Breast Cancer: A Systematic Review. J Clin Med 2022; 11:jcm11092527. [PMID: 35566652 PMCID: PMC9099544 DOI: 10.3390/jcm11092527] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Revised: 04/16/2022] [Accepted: 04/28/2022] [Indexed: 02/04/2023] Open
Abstract
The association between physical activity and telomere length (TL) has been continuously reported. However, the interplay of physical activity and TL among women with breast cancer has not been elucidated. Thus, the purpose of this systematic review was to synthesize the evidence for the association of physical activity with TL in women with breast cancer. Systematic searches were conducted to identify quantified studies using MEDLINE, EMBASE, Cochrane Central Register of Controlled Trials, Web of Science, and Clinical Trials.gov. Five studies were included in this systematic review. Three of the five studies reported that physical activity has a significant relationship in delaying TL shortening, but others observed no association between physical activity and TL in breast cancer survivors. Although the heterogeneous studies acted as limitations in drawing clear conclusions, physical activity strategies show encouraging impacts in delaying TL shortening. To understand the effects of physical activity on TL shortening in breast cancer survivors, further studies are needed considering the tissue site, treatments for breast cancer, DNA extraction methods, and tools for measuring physical activity.
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Pham C, Vryer R, O’Hely M, Mansell T, Burgner D, Collier F, Symeonides C, Tang MLK, Vuillermin P, Gray L, Saffery R, Ponsonby AL. Shortened Infant Telomere Length Is Associated with Attention Deficit/Hyperactivity Disorder Symptoms in Children at Age Two Years: A Birth Cohort Study. Int J Mol Sci 2022; 23:ijms23094601. [PMID: 35562991 PMCID: PMC9104809 DOI: 10.3390/ijms23094601] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Revised: 04/11/2022] [Accepted: 04/14/2022] [Indexed: 12/13/2022] Open
Abstract
Environmental factors can accelerate telomere length (TL) attrition. Shortened TL is linked to attention deficit/hyperactivity disorder (ADHD) symptoms in school-aged children. The onset of ADHD occurs as early as preschool-age, but the TL-ADHD association in younger children is unknown. We investigated associations between infant TL and ADHD symptoms in children and assessed environmental factors as potential confounders and/or mediators of this association. Relative TL was measured by quantitative polymerase chain reaction in cord and 12-month blood in the birth cohort study, the Barwon Infant Study. Early life environmental factors collected antenatally to two years were used to measure confounding. ADHD symptoms at age two years were evaluated by the Child Behavior Checklist Attention Problems (AP) and the Attention Deficit/Hyperactivity Problems (ADHP). Associations between early life environmental factors on TL or ADHD symptoms were assessed using multivariable regression models adjusted for relevant factors. Telomere length at 12 months (TL12), but not at birth, was inversely associated with AP (β = −0.56; 95% CI (−1.13, 0.006); p = 0.05) and ADHP (β = −0.66; 95% CI (−1.11, −0.21); p = 0.004). Infant secondhand smoke exposure at one month was independently associated with shorter TL12 and also higher ADHD symptoms. Further work is needed to elucidate the mechanisms that influence TL attrition and early neurodevelopment.
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Affiliation(s)
- Cindy Pham
- Murdoch Children’s Research Institute, Royal Children’s Hospital, Parkville, VIC 3052, Australia; (C.P.); (R.V.); (M.O.); (T.M.); (D.B.); (C.S.); (M.L.K.T.); (P.V.); (R.S.)
- Florey Institute of Neuroscience and Mental Health, University of Melbourne, Parkville, VIC 3052, Australia
- Melbourne School of Population and Global Health, University of Melbourne, Parkville, VIC 3052, Australia
- Child Health Research Unit, Barwon Health, Geelong, VIC 3220, Australia; (F.C.); (L.G.)
| | - Regan Vryer
- Murdoch Children’s Research Institute, Royal Children’s Hospital, Parkville, VIC 3052, Australia; (C.P.); (R.V.); (M.O.); (T.M.); (D.B.); (C.S.); (M.L.K.T.); (P.V.); (R.S.)
- Child Health Research Unit, Barwon Health, Geelong, VIC 3220, Australia; (F.C.); (L.G.)
- Department of Paediatrics, University of Melbourne, Parkville, VIC 3052, Australia
| | - Martin O’Hely
- Murdoch Children’s Research Institute, Royal Children’s Hospital, Parkville, VIC 3052, Australia; (C.P.); (R.V.); (M.O.); (T.M.); (D.B.); (C.S.); (M.L.K.T.); (P.V.); (R.S.)
- Child Health Research Unit, Barwon Health, Geelong, VIC 3220, Australia; (F.C.); (L.G.)
- School of Medicine, Deakin University, Geelong, VIC 3220, Australia
| | - Toby Mansell
- Murdoch Children’s Research Institute, Royal Children’s Hospital, Parkville, VIC 3052, Australia; (C.P.); (R.V.); (M.O.); (T.M.); (D.B.); (C.S.); (M.L.K.T.); (P.V.); (R.S.)
- Child Health Research Unit, Barwon Health, Geelong, VIC 3220, Australia; (F.C.); (L.G.)
- Department of Paediatrics, University of Melbourne, Parkville, VIC 3052, Australia
| | - David Burgner
- Murdoch Children’s Research Institute, Royal Children’s Hospital, Parkville, VIC 3052, Australia; (C.P.); (R.V.); (M.O.); (T.M.); (D.B.); (C.S.); (M.L.K.T.); (P.V.); (R.S.)
- Child Health Research Unit, Barwon Health, Geelong, VIC 3220, Australia; (F.C.); (L.G.)
- Department of Paediatrics, University of Melbourne, Parkville, VIC 3052, Australia
| | - Fiona Collier
- Child Health Research Unit, Barwon Health, Geelong, VIC 3220, Australia; (F.C.); (L.G.)
- School of Medicine, Deakin University, Geelong, VIC 3220, Australia
| | - Christos Symeonides
- Murdoch Children’s Research Institute, Royal Children’s Hospital, Parkville, VIC 3052, Australia; (C.P.); (R.V.); (M.O.); (T.M.); (D.B.); (C.S.); (M.L.K.T.); (P.V.); (R.S.)
- Department of Paediatrics, University of Melbourne, Parkville, VIC 3052, Australia
| | - Mimi L. K. Tang
- Murdoch Children’s Research Institute, Royal Children’s Hospital, Parkville, VIC 3052, Australia; (C.P.); (R.V.); (M.O.); (T.M.); (D.B.); (C.S.); (M.L.K.T.); (P.V.); (R.S.)
- Department of Paediatrics, University of Melbourne, Parkville, VIC 3052, Australia
| | - Peter Vuillermin
- Murdoch Children’s Research Institute, Royal Children’s Hospital, Parkville, VIC 3052, Australia; (C.P.); (R.V.); (M.O.); (T.M.); (D.B.); (C.S.); (M.L.K.T.); (P.V.); (R.S.)
- Child Health Research Unit, Barwon Health, Geelong, VIC 3220, Australia; (F.C.); (L.G.)
- School of Medicine, Deakin University, Geelong, VIC 3220, Australia
| | - Lawrence Gray
- Child Health Research Unit, Barwon Health, Geelong, VIC 3220, Australia; (F.C.); (L.G.)
- School of Medicine, Deakin University, Geelong, VIC 3220, Australia
| | - Richard Saffery
- Murdoch Children’s Research Institute, Royal Children’s Hospital, Parkville, VIC 3052, Australia; (C.P.); (R.V.); (M.O.); (T.M.); (D.B.); (C.S.); (M.L.K.T.); (P.V.); (R.S.)
- Child Health Research Unit, Barwon Health, Geelong, VIC 3220, Australia; (F.C.); (L.G.)
- Department of Paediatrics, University of Melbourne, Parkville, VIC 3052, Australia
| | - Anne-Louise Ponsonby
- Murdoch Children’s Research Institute, Royal Children’s Hospital, Parkville, VIC 3052, Australia; (C.P.); (R.V.); (M.O.); (T.M.); (D.B.); (C.S.); (M.L.K.T.); (P.V.); (R.S.)
- Florey Institute of Neuroscience and Mental Health, University of Melbourne, Parkville, VIC 3052, Australia
- Melbourne School of Population and Global Health, University of Melbourne, Parkville, VIC 3052, Australia
- Child Health Research Unit, Barwon Health, Geelong, VIC 3220, Australia; (F.C.); (L.G.)
- Correspondence:
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Telomere fragility in radiology workers occupationally exposed to low doses of ionising radiation. Arh Hig Rada Toksikol 2022; 73:23-30. [PMID: 35390241 PMCID: PMC8999593 DOI: 10.2478/aiht-2022-73-3609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Accepted: 03/01/2022] [Indexed: 11/30/2022] Open
Abstract
Ionising radiation damages DNA directly and indirectly through increased production of reactive oxygen species. Although telomeres have been reported as indicators of radiosensitivity, their maintenance in response to occupational exposure to low radiation doses is still a matter of debate. In this work we aimed to investigate telomere length and structure in hospital workers occupationally exposed to X-rays and to relate these findings to oxidation of biomolecules and chromosome aberrations. Blood samples of exposed participants and matching controls were taken during periodical check-ups. Chromosome aberrations and telomere length and structure were analysed in peripheral blood lymphocytes using Q-FISH, whereas oxidative stress parameters [pro/antioxidant balance (PAB), lipid peroxidation, and 8-oxo-dG] were measured in plasma samples. Based on the CA findings we divided the exposed group into two subgroups, of which one had chromosome aberrations in the first division metaphases and the other did not. There was no significant difference in telomere length between any of the groups. However, both subgroups showed significantly higher rate of fragile telomeres and higher lipid peroxidation product and 8-oxo-dG levels than controls. The rate of fragile telomeres significantly correlated with plasma levels of 8-oxo-dG, which suggests that continuous exposure to low radiation doses induces oxidative base damage of guanine resulting in telomere fragility.
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Roast MJ, Eastwood JR, Aranzamendi NH, Fan M, Teunissen N, Verhulst S, Peters A. Telomere length declines with age, but relates to immune function independent of age in a wild passerine. ROYAL SOCIETY OPEN SCIENCE 2022; 9:212012. [PMID: 35601455 PMCID: PMC9043702 DOI: 10.1098/rsos.212012] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Accepted: 04/01/2022] [Indexed: 05/03/2023]
Abstract
Telomere length (TL) shortens with age but telomere dynamics can relate to fitness components independent of age. Immune function often relates to such fitness components and can also interact with telomeres. Studying the link between TL and immune function may therefore help us understand telomere-fitness associations. We assessed the relationships between erythrocyte TL and four immune indices (haptoglobin, natural antibodies (NAbs), complement activity (CA) and heterophil-lymphocyte (HL) ratio; n = 477-589), from known-aged individuals of a wild passerine (Malurus coronatus). As expected, we find that TL significantly declined with age. To verify whether associations between TL and immune function were independent of parallel age-related changes (e.g. immunosenescence), we statistically controlled for sampling age and used within-subject centring of TL to separate relationships within or between individuals. We found that TL positively predicted CA at the between-individual level (individuals with longer average TL had higher CA), but no other immune indices. By contrast, age predicted the levels of NAbs and HL ratio, allowing inference that respective associations between TL and age with immune indices are independent. Any links existing between TL and fitness are therefore unlikely to be strongly mediated by innate immune function, while TL and immune indices appear independent expressions of individual heterogeneity.
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Affiliation(s)
- Michael J. Roast
- School of Biological Sciences, Monash University, Victoria 3800, Australia
| | - Justin R. Eastwood
- School of Biological Sciences, Monash University, Victoria 3800, Australia
| | | | - Marie Fan
- School of Biological Sciences, Monash University, Victoria 3800, Australia
| | - Niki Teunissen
- School of Biological Sciences, Monash University, Victoria 3800, Australia
| | - Simon Verhulst
- Groningen Institute for Evolutionary Life Sciences, University of Groningen, Nijenborgh 7, 9747 AG Groningen, The Netherlands
| | - Anne Peters
- School of Biological Sciences, Monash University, Victoria 3800, Australia
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Machan M, Tabor JB, Wang M, Sutter B, Wiley JP, Mychasiuk R, Debert CT. The Impact of Concussion, Sport, and Time in Season on Saliva Telomere Length in Healthy Athletes. Front Sports Act Living 2022; 4:816607. [PMID: 35243342 PMCID: PMC8886719 DOI: 10.3389/fspor.2022.816607] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Accepted: 01/04/2022] [Indexed: 11/13/2022] Open
Abstract
To date, sport-related concussion diagnosis and management is primarily based on subjective clinical tests in the absence of validated biomarkers. A major obstacle to clinical validation and application is a lack of studies exploring potential biomarkers in non-injured populations. This cross-sectional study examined the associations between saliva telomere length (TL) and multiple confounding variables in a healthy university athlete population. One hundred eighty-three (108 male and 75 female) uninjured varsity athletes were recruited to the study and provided saliva samples at either pre- or mid-season, for TL analysis. Multiple linear regression was used to determine the associations between saliva TL and history of concussion, sport contact type, time in season (pre vs. mid-season collection), age, and sex. Results showed no significant associations between TL and history of concussion, age, or sport contact type. However, TL from samples collected mid-season were longer than those collected pre-season [β = 231.4, 95% CI (61.9, 401.0), p = 0.008], and males had longer TL than females [β = 284.8, 95% CI (111.5, 458.2), p = 0.001] when adjusting for all other variables in the model. These findings population suggest that multiple variables may influence TL. Future studies should consider these confounders when evaluating saliva TL as a plausible fluid biomarker for SRC.
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Affiliation(s)
- Matthew Machan
- Department of Clinical Neurosciences, University of Calgary, Calgary, AB, Canada
| | - Jason B. Tabor
- Department of Clinical Neurosciences, University of Calgary, Calgary, AB, Canada
- Faculty of Kinesiology, University of Calgary, Calgary, AB, Canada
| | - Meng Wang
- Department of Clinical Neurosciences, University of Calgary, Calgary, AB, Canada
| | - Bonnie Sutter
- Faculty of Kinesiology, University of Calgary, Calgary, AB, Canada
| | - J. Preston Wiley
- Faculty of Kinesiology, University of Calgary, Calgary, AB, Canada
- University of Calgary Sport Medicine Centre, Faculty of Kinesiology, University of Calgary, Calgary, AB, Canada
| | - Richelle Mychasiuk
- Department of Neuroscience, Monash University, Melbourne, VIC, Australia
| | - Chantel T. Debert
- Department of Clinical Neurosciences, University of Calgary, Calgary, AB, Canada
- Faculty of Kinesiology, University of Calgary, Calgary, AB, Canada
- *Correspondence: Chantel T. Debert
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50
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Li Piani L, Reschini M, Somigliana E, Ferrari S, Busnelli A, Viganò P, Favero C, Albetti B, Hoxha M, Bollati V. Peripheral mitochondrial DNA, telomere length and DNA methylation as predictors of live birth in in vitro fertilization cycles. PLoS One 2022; 17:e0261591. [PMID: 35073322 PMCID: PMC8786209 DOI: 10.1371/journal.pone.0261591] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Accepted: 12/03/2021] [Indexed: 12/21/2022] Open
Abstract
OBJECTIVE To evaluate whether telomere length (TL), mitochondrial-DNA (mt-DNA) or epigenetic age estimators based on DNA methylation (DNAm) pattern could be considered reliable predictors of in-vitro-fertilization (IVF) success in terms of live birth rate. DESIGN Prospective cohort study. SETTING Infertility Unit of the Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico. PATIENTS 181 women aged 37-39 years who underwent IVF at a single-centre between January 2017 and December 2018. INTERVENTIONS On the day of recruitment, blood samples were collected, and genomic DNA was isolated from white blood cells. TL, mt-DNA and DNAm assessment was performed using quantitative real-time polymerase chain reaction (qPCR). Biological age (DNAm age) was computed as the algorithm based on methylation pattern of five genes. Epigenetic age acceleration was estimated from the residuals of the linear model of epigenetic age regressed on chronological age. Long Interspersed Nuclear Elements (LINE)-1 methylation pattern was used as a surrogate for global DNA methylation. MAIN OUTCOME MEASURES This study investigated whether peripheral TL, mt-DNA and DNAm could predict live birth in IVF cycles. RESULTS TL, mt-DNA and LINE-1 methylation were not associated with IVF success. Conversely, DNAm age resulted significantly lower in women who had a live birth compared to women who did not (36.1 ± 4.2 and 37.3 ± 3.3 years, respectively, p = 0.04). For DNAm age, odds ratio (OR) for live birth per year of age was 0.90 (95%CI: 0.82-0.99, p = 0.036) after adjusting for FSH and antral follicle count (AFC) and 0.90 (95%CI: 0.82-0.99, p = 0.028) after adjusting also for number of oocytes retrieved. A significant association also emerged for epigenetic age acceleration after adjustments (OR = 0.91, 95%CI: 0.83-1.00, p = 0.048). CONCLUSION DNAm age is associated with IVF success but the magnitude of this association is insufficient to claim a clinical use. However, our findings are promising and warrant further investigation. Assessment of biological age using different epigenetic clocks or focusing on different tissues may reveal new predictors of IVF success.
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Affiliation(s)
- Letizia Li Piani
- Dept of Clinical Sciences and Community Health, Università degli Studi di Milano, Milan, Italy
- Infertility Unit, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Marco Reschini
- Infertility Unit, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Edgardo Somigliana
- Dept of Clinical Sciences and Community Health, Università degli Studi di Milano, Milan, Italy
- Infertility Unit, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Stefania Ferrari
- Infertility Unit, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Andrea Busnelli
- Department of Biomedical Sciences, Humanitas University, Pieve Emanuele, Milan, Italy
- Division of Gynecology and Reproductive Medicine, Department of Gynecology, IRCCS Humanitas Research Hospital, Fertility Center, Rozzano, Milan, Italy
| | - Paola Viganò
- Infertility Unit, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Chiara Favero
- Dept of Clinical Sciences and Community Health, Università degli Studi di Milano, Milan, Italy
| | - Benedetta Albetti
- Dept of Clinical Sciences and Community Health, Università degli Studi di Milano, Milan, Italy
| | - Mirjam Hoxha
- Dept of Clinical Sciences and Community Health, Università degli Studi di Milano, Milan, Italy
| | - Valentina Bollati
- Dept of Clinical Sciences and Community Health, Università degli Studi di Milano, Milan, Italy
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