1
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Medoro A, Saso L, Scapagnini G, Davinelli S. NRF2 signaling pathway and telomere length in aging and age-related diseases. Mol Cell Biochem 2023:10.1007/s11010-023-04878-x. [PMID: 37917279 DOI: 10.1007/s11010-023-04878-x] [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: 08/19/2023] [Accepted: 10/07/2023] [Indexed: 11/04/2023]
Abstract
The transcription factor nuclear factor erythroid 2-related factor 2 (NRF2) is well recognized as a critical regulator of redox, metabolic, and protein homeostasis, as well as the regulation of inflammation. An age-associated decline in NRF2 activity may allow oxidative stress to remain unmitigated and affect key features associated with the aging phenotype, including telomere shortening. Telomeres, the protective caps of eukaryotic chromosomes, are highly susceptible to oxidative DNA damage, which can accelerate telomere shortening and, consequently, lead to premature senescence and genomic instability. In this review, we explore how the dysregulation of NRF2, coupled with an increase in oxidative stress, might be a major determinant of telomere shortening and age-related diseases. We discuss the relevance of the connection between NRF2 deficiency in aging and telomere attrition, emphasizing the importance of studying this functional link to enhance our understanding of aging pathologies. Finally, we present a number of compounds that possess the ability to restore NRF2 function, maintain a proper redox balance, and preserve telomere length during aging.
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Affiliation(s)
- Alessandro Medoro
- Department of Medicine and Health Sciences "V. Tiberio", University of Molise, Via F. De Sanctis, s.n.c., 86100, Campobasso, Italy
| | - Luciano Saso
- Department of Physiology and Pharmacology "Vittorio Erspamer", Sapienza University of Rome, Rome, Italy
| | - Giovanni Scapagnini
- Department of Medicine and Health Sciences "V. Tiberio", University of Molise, Via F. De Sanctis, s.n.c., 86100, Campobasso, Italy
| | - Sergio Davinelli
- Department of Medicine and Health Sciences "V. Tiberio", University of Molise, Via F. De Sanctis, s.n.c., 86100, Campobasso, Italy.
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2
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Vellasamy DM, Lee SJ, Goh KW, Goh BH, Tang YQ, Ming LC, Yap WH. Targeting Immune Senescence in Atherosclerosis. Int J Mol Sci 2022; 23:13059. [PMID: 36361845 PMCID: PMC9658319 DOI: 10.3390/ijms232113059] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 10/07/2022] [Accepted: 10/10/2022] [Indexed: 10/29/2023] Open
Abstract
Atherosclerosis is one of the main underlying causes of cardiovascular diseases (CVD). It is associated with chronic inflammation and intimal thickening as well as the involvement of multiple cell types including immune cells. The engagement of innate or adaptive immune response has either athero-protective or atherogenic properties in exacerbating or alleviating atherosclerosis. In atherosclerosis, the mechanism of action of immune cells, particularly monocytes, macrophages, dendritic cells, and B- and T-lymphocytes have been discussed. Immuno-senescence is associated with aging, viral infections, genetic predispositions, and hyperlipidemia, which contribute to atherosclerosis. Immune senescent cells secrete SASP that delays or accelerates atherosclerosis plaque growth and associated pathologies such as aneurysms and coronary artery disease. Senescent cells undergo cell cycle arrest, morphological changes, and phenotypic changes in terms of their abundances and secretome profile including cytokines, chemokines, matrix metalloproteases (MMPs) and Toll-like receptors (TLRs) expressions. The senescence markers are used in therapeutics and currently, senolytics represent one of the emerging treatments where specific targets and clearance of senescent cells are being considered as therapy targets for the prevention or treatment of atherosclerosis.
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Affiliation(s)
- Danusha Michelle Vellasamy
- School of Biosciences, Faculty of Medical and Health Sciences, Taylor’s University, Subang Jaya 47500, Malaysia
| | - Sin-Jye Lee
- School of Biosciences, Faculty of Medical and Health Sciences, Taylor’s University, Subang Jaya 47500, Malaysia
| | - Khang Wen Goh
- Faculty of Data Science and Information Technology, INTI International University, Nilai 71800, Malaysia
| | - Bey-Hing Goh
- Biofunctional Molecule Exploratory (BMEX) Research Group, School of Pharmacy, Monash University Malaysia, Bandar Sunway 47500, Malaysia
- College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, China
| | - Yin-Quan Tang
- School of Biosciences, Faculty of Medical and Health Sciences, Taylor’s University, Subang Jaya 47500, Malaysia
- Centre for Drug Discovery and Molecular Pharmacology, Faculty of Medical and Health Sciences, Taylor’s University, Subang Jaya 47500, Malaysia
| | - Long Chiau Ming
- PAP Rashidah Sa’adatul Bolkiah Institute of Health Sciences, Universiti Brunei Darussalam, Gadong BE1410, Brunei
| | - Wei Hsum Yap
- School of Biosciences, Faculty of Medical and Health Sciences, Taylor’s University, Subang Jaya 47500, Malaysia
- Centre for Drug Discovery and Molecular Pharmacology, Faculty of Medical and Health Sciences, Taylor’s University, Subang Jaya 47500, Malaysia
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3
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Sanchez M, Kannengiesser C, Hoang S, Potier L, Fumeron F, Venteclef N, Scheen A, Gautier JF, Hadjadj S, Marre M, Roussel R, Mohammedi K, Velho G. Leukocyte telomere length, allelic variations in related genes and risk of coronary heart disease in people with long-standing type 1 diabetes. Cardiovasc Diabetol 2022; 21:206. [PMID: 36221106 PMCID: PMC9554968 DOI: 10.1186/s12933-022-01635-0] [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: 07/13/2022] [Accepted: 09/01/2022] [Indexed: 11/20/2022] Open
Abstract
Background Type 1 diabetes is associated with accelerated vascular aging and advanced atherosclerosis resulting in increased rates of cardiovascular disease and premature death. We evaluated associations between Leukocyte telomere length (LTL), allelic variations (SNPs) in LTL-related genes and the incidence of coronary heart disease (CHD) in adults with long-standing type 1 diabetes. Methods We assessed associations of LTL, measured at baseline by RT–PCR, and of SNPs in 11 LTL-related genes with the risk of coronary heart disease (CHD: myocardial infarction or coronary revascularization) and all-cause death during follow-up in two multicenter French-Belgian prospective cohorts of people with long-standing type 1 diabetes. Results In logistic and Cox analyses, the lowest tertile of LTL distribution (short telomeres) at baseline was associated with the prevalence of myocardial infarction at baseline and with increased risk of CHD (Hazard ratio 3.14 (1.39–7.70), p = 0.005, for shorter vs longer tertile of LTL) and all-cause death (Hazard ratio 1.63 (95% CI 1.04–2.55), p = 0.03, for shorter vs combined intermediate and longer tertiles of LTL) during follow-up. Allelic variations in six genes related to telomere biology (TERC, NAF1, TERT, TNKS, MEN1 and BICD1) were also associated with the incidence of CHD during follow-up. The associations were independent of sex, age, duration of diabetes, and a range of relevant confounding factors at baseline. Conclusions Our results suggest that short LTL is an independent risk factor for CHD in people with type 1 diabetes. Supplementary Information The online version contains supplementary material available at 10.1186/s12933-022-01635-0.
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Affiliation(s)
- Manuel Sanchez
- INSERM UMR-S1151, CNRS UMR-S8253, Institut Necker-Enfants Malades, Université Paris Cité, Paris, France. .,UFR de Médecine, Université Paris Cité, Paris, France. .,Department of Geriatrics, Assistance Publique - Hôpitaux de Paris, Bichat University Hospital, 46 rue Henri Huchard, 75018, Paris, France.
| | - Caroline Kannengiesser
- UFR de Médecine, Université Paris Cité, Paris, France.,Department of Genetics, Assistance Publique - Hôpitaux de Paris, DHU FIRE, Bichat Hospital, Paris, France
| | - Sophie Hoang
- Department of Geriatrics, Charles-Foix University Hospital, Vitry sur Seine, France
| | - Louis Potier
- INSERM UMR-S1151, CNRS UMR-S8253, Institut Necker-Enfants Malades, Université Paris Cité, Paris, France.,UFR de Médecine, Université Paris Cité, Paris, France.,Department of Diabetology, Endocrinology and Nutrition, Assistance Publique - Hôpitaux de Paris, DHU FIRE, Bichat Hospital, Paris, France
| | - Frédéric Fumeron
- INSERM UMR-S1151, CNRS UMR-S8253, Institut Necker-Enfants Malades, Université Paris Cité, Paris, France
| | - Nicolas Venteclef
- INSERM UMR-S1151, CNRS UMR-S8253, Institut Necker-Enfants Malades, Université Paris Cité, Paris, France
| | - André Scheen
- Department of Diabetology, Endocrinology and Nutrition, Sart Tilman University Hospital, Liège, Belgium
| | - Jean-François Gautier
- INSERM UMR-S1151, CNRS UMR-S8253, Institut Necker-Enfants Malades, Université Paris Cité, Paris, France.,UFR de Médecine, Université Paris Cité, Paris, France.,Department of Diabetology, Endocrinology and Nutrition, Assistance Publique - Hôpitaux de Paris, Lariboisière University Hospital, Paris, France
| | - Samy Hadjadj
- Institut du Thorax, INSERM, CNRS, CHU Nantes, Université de Nantes, Nantes, France
| | - Michel Marre
- Clinique Ambroise Paré, Neuilly-sur-Seine, France
| | - Ronan Roussel
- INSERM UMR-S1151, CNRS UMR-S8253, Institut Necker-Enfants Malades, Université Paris Cité, Paris, France.,UFR de Médecine, Université Paris Cité, Paris, France.,Department of Diabetology, Endocrinology and Nutrition, Assistance Publique - Hôpitaux de Paris, DHU FIRE, Bichat Hospital, Paris, France
| | - Kamel Mohammedi
- INSERM U1034, Bordeaux University and Hospital, Bordeaux, France
| | - Gilberto Velho
- INSERM UMR-S1151, CNRS UMR-S8253, Institut Necker-Enfants Malades, Université Paris Cité, Paris, France
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4
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Tian W, Zhang T, Wang X, Zhang J, Ju J, Xu H. Global research trends in atherosclerosis: A bibliometric and visualized study. Front Cardiovasc Med 2022; 9:956482. [PMID: 36082127 PMCID: PMC9445883 DOI: 10.3389/fcvm.2022.956482] [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: 05/30/2022] [Accepted: 08/03/2022] [Indexed: 11/13/2022] Open
Abstract
BackgroundIncreasing evidence has spurred a considerable evolution of concepts related to atherosclerosis, prompting the need to provide a comprehensive view of the growing literature. By retrieving publications in the Web of Science Core Collection (WoSCC) of Clarivate Analytics, we conducted a bibliometric analysis of the scientific literature on atherosclerosis to describe the research landscape.MethodsA search was conducted of the WoSCC for articles and reviews serving exclusively as a source of information on atherosclerosis published between 2012 and 2022. Microsoft Excel 2019 was used to chart the annual productivity of research relevant to atherosclerosis. Through CiteSpace and VOSviewer, the most prolific countries or regions, authors, journals, and resource-, intellectual-, and knowledge-sharing in atherosclerosis research, as well as co-citation analysis of references and keywords, were analyzed.ResultsA total of 20,014 publications were retrieved. In terms of publications, the United States remains the most productive country (6,390, 31,93%). The most publications have been contributed by Johns Hopkins Univ (730, 3.65%). ALVARO ALONSO produced the most published works (171, 0.85%). With a betweenness centrality of 0.17, ERIN D MICHOS was the most influential author. The most prolific journal was identified as Atherosclerosis (893, 4.46%). Circulation received the most co-citations (14,939, 2.79%). Keywords with the ongoing strong citation bursts were “nucleotide-binding oligomerization (NOD), Leucine-rich repeat (LRR)-containing protein (NLRP3) inflammasome,” “short-chain fatty acids (SCFAs),” “exosome,” and “homeostasis,” etc.ConclusionThe research on atherosclerosis is driven mostly by North America and Europe. Intensive research has focused on the link between inflammation and atherosclerosis, as well as its complications. Specifically, the NLRP3 inflammasome, interleukin-1β, gut microbiota and SCFAs, exosome, long non-coding RNAs, autophagy, and cellular senescence were described to be hot issues in the field.
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Affiliation(s)
- Wende Tian
- Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China
- Graduate School, China Academy of Chinese Medical Sciences, Beijing, China
- National Clinical Research Center for Chinese Medicine Cardiology, Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Tai Zhang
- Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China
- Graduate School, China Academy of Chinese Medical Sciences, Beijing, China
- Department of Gastroenterology, Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Xinyi Wang
- Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China
- Graduate School, China Academy of Chinese Medical Sciences, Beijing, China
- National Clinical Research Center for Chinese Medicine Cardiology, Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Jie Zhang
- National Clinical Research Center for Chinese Medicine Cardiology, Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China
- Graduate School, Beijing University of Chinese Medicine, Beijing, China
| | - Jianqing Ju
- Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China
- National Clinical Research Center for Chinese Medicine Cardiology, Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China
- *Correspondence: Jianqing Ju,
| | - Hao Xu
- Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China
- National Clinical Research Center for Chinese Medicine Cardiology, Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China
- Hao Xu,
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Garrido AM, Kaistha A, Uryga AK, Oc S, Foote K, Shah A, Finigan A, Figg N, Dobnikar L, Jørgensen H, Bennett M. Efficacy and limitations of senolysis in atherosclerosis. Cardiovasc Res 2022; 118:1713-1727. [PMID: 34142149 PMCID: PMC9215197 DOI: 10.1093/cvr/cvab208] [Citation(s) in RCA: 31] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Revised: 04/14/2021] [Accepted: 06/15/2021] [Indexed: 01/28/2023] Open
Abstract
AIMS Traditional markers of cell senescence including p16, Lamin B1, and senescence-associated beta galactosidase (SAβG) suggest very high frequencies of senescent cells in atherosclerosis, while their removal via 'senolysis' has been reported to reduce atherogenesis. However, selective killing of a variety of different cell types can exacerbate atherosclerosis. We therefore examined the specificity of senescence markers in vascular smooth muscle cells (VSMCs) and the effects of genetic or pharmacological senolysis in atherosclerosis. METHODS AND RESULTS We examined traditional senescence markers in human and mouse VSMCs in vitro, and in mouse atherosclerosis. p16 and SAβG increased and Lamin B1 decreased in replicative senescence and stress-induced premature senescence (SIPS) of cultured human VSMCs. In contrast, mouse VSMCs undergoing SIPS showed only modest p16 up-regulation, and proliferating mouse monocyte/macrophages also expressed p16 and SAβG. Single cell RNA-sequencing (scRNA-seq) of lineage-traced mice showed increased p16 expression in VSMC-derived cells in plaques vs. normal arteries, but p16 localized to Stem cell antigen-1 (Sca1)+ or macrophage-like populations. Activation of a p16-driven suicide gene to remove p16+ vessel wall- and/or bone marrow-derived cells increased apoptotic cells, but also induced inflammation and did not change plaque size or composition. In contrast, the senolytic ABT-263 selectively reduced senescent VSMCs in culture, and markedly reduced atherogenesis. However, ABT-263 did not reduce senescence markers in vivo, and significantly reduced monocyte and platelet counts and interleukin 6 as a marker of systemic inflammation. CONCLUSIONS We show that genetic and pharmacological senolysis have variable effects on atherosclerosis, and may promote inflammation and non-specific effects respectively. In addition, traditional markers of cell senescence such as p16 have significant limitations to identify and remove senescent cells in atherosclerosis, suggesting that senescence studies in atherosclerosis and new senolytic drugs require more specific and lineage-restricted markers before ascribing their effects entirely to senolysis.
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Affiliation(s)
- Abel Martin Garrido
- Division of Cardiovascular Medicine, University of Cambridge, Box 110, ACCI, Addenbrooke’s Hospital, Cambridge CB2 2QQ, UK
| | - Anuradha Kaistha
- Division of Cardiovascular Medicine, University of Cambridge, Box 110, ACCI, Addenbrooke’s Hospital, Cambridge CB2 2QQ, UK
| | - Anna K Uryga
- Division of Cardiovascular Medicine, University of Cambridge, Box 110, ACCI, Addenbrooke’s Hospital, Cambridge CB2 2QQ, UK
| | - Sebnem Oc
- Division of Cardiovascular Medicine, University of Cambridge, Box 110, ACCI, Addenbrooke’s Hospital, Cambridge CB2 2QQ, UK
| | - Kirsty Foote
- Division of Cardiovascular Medicine, University of Cambridge, Box 110, ACCI, Addenbrooke’s Hospital, Cambridge CB2 2QQ, UK
| | - Aarti Shah
- Division of Cardiovascular Medicine, University of Cambridge, Box 110, ACCI, Addenbrooke’s Hospital, Cambridge CB2 2QQ, UK
| | - Alison Finigan
- Division of Cardiovascular Medicine, University of Cambridge, Box 110, ACCI, Addenbrooke’s Hospital, Cambridge CB2 2QQ, UK
| | - Nichola Figg
- Division of Cardiovascular Medicine, University of Cambridge, Box 110, ACCI, Addenbrooke’s Hospital, Cambridge CB2 2QQ, UK
| | - Lina Dobnikar
- Nuclear Dynamics Programme, Babraham Institute, Cambridge, UK
| | - Helle Jørgensen
- Division of Cardiovascular Medicine, University of Cambridge, Box 110, ACCI, Addenbrooke’s Hospital, Cambridge CB2 2QQ, UK
| | - Martin Bennett
- Division of Cardiovascular Medicine, University of Cambridge, Box 110, ACCI, Addenbrooke’s Hospital, Cambridge CB2 2QQ, UK
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6
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Inci N, Kamali D, Akyildiz EO, Tahir Turanli E, Bozaykut P. Translation of Cellular Senescence to Novel Therapeutics: Insights From Alternative Tools and Models. FRONTIERS IN AGING 2022; 3:828058. [PMID: 35821852 PMCID: PMC9261353 DOI: 10.3389/fragi.2022.828058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Accepted: 04/12/2022] [Indexed: 01/10/2023]
Abstract
Increasing chronological age is the greatest risk factor for human diseases. Cellular senescence (CS), which is characterized by permanent cell-cycle arrest, has recently emerged as a fundamental mechanism in developing aging-related pathologies. During the aging process, senescent cell accumulation results in senescence-associated secretory phenotype (SASP) which plays an essential role in tissue dysfunction. Although discovered very recently, senotherapeutic drugs have been already involved in clinical studies. This review gives a summary of the molecular mechanisms of CS and its role particularly in the development of cardiovascular diseases (CVD) as the leading cause of death. In addition, it addresses alternative research tools including the nonhuman and human models as well as computational techniques for the discovery of novel therapies. Finally, senotherapeutic approaches that are mainly classified as senolytics and senomorphics are discussed.
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Affiliation(s)
- Nurcan Inci
- Graduate School of Natural and Applied Sciences, Acibadem Mehmet Ali Aydinlar University, Istanbul, Turkey
| | - Dilanur Kamali
- Graduate School of Natural and Applied Sciences, Acibadem Mehmet Ali Aydinlar University, Istanbul, Turkey
| | - Erdogan Oguzhan Akyildiz
- Graduate School of Natural and Applied Sciences, Acibadem Mehmet Ali Aydinlar University, Istanbul, Turkey
| | - Eda Tahir Turanli
- Graduate School of Natural and Applied Sciences, Acibadem Mehmet Ali Aydinlar University, Istanbul, Turkey
- Department of Molecular Biology and Genetics, Faculty of Engineering and Natural Sciences, Acibadem Mehmet Ali Aydinlar University, Istanbul, Turkey
| | - Perinur Bozaykut
- Graduate School of Natural and Applied Sciences, Acibadem Mehmet Ali Aydinlar University, Istanbul, Turkey
- Department of Molecular Biology and Genetics, Faculty of Engineering and Natural Sciences, Acibadem Mehmet Ali Aydinlar University, Istanbul, Turkey
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7
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Ito T, Saeki H, Guo X, Sysa-Shah P, Tamashiro KL, Lee RS, Ishiyama S, Orita H, Sato K, Brock MV, Gabrielson KL. Prenatal stress enhances atherosclerosis and telomere shortening in ApoE knockout mouse offspring. Am J Physiol Regul Integr Comp Physiol 2022; 323:R68-R80. [PMID: 35411811 DOI: 10.1152/ajpregu.00201.2021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Children born to women who experience stress during pregnancy have an increased risk of atherosclerosis in later life, but few animal models have explored mechanisms. To study this phenomena, timed-bred ApoE knockout mice were determined pregnant with ultrasound and randomly assigned on gestation day 8.5 to either a control (no stress) or prenatal stress (PS) group using two hours of restraint for five consecutive days. PS significantly increased plasma corticosterone levels in pregnant mice. The litters from PS mice showed increased neonatal mortality within the first week of life. Body weights (at euthanasia) of adult offspring at 25 weeks from the PS group were significantly increased compared to weights of controls. Adult offspring from these pregnancies were serially imaged with ultrasound to measure plaque thickness and were compared with plaque macro- and microscopic pathology. PS groups had increased plaques thickness by ultrasound, gross, histological evaluation and increased aortic root and valve macrophage infiltration at 25 weeks. Five-week old mice from PS group had significant decrease in mean arterial pressure, yet blood pressure normalized by 10 weeks. Since prenatal stress induced increased atherosclerosis, and telomeres are susceptible to stress, aortas from 10 week old mice were compared for telomere lengths and were found to be significantly shorter in PS mice compared to control mice. These studies support future investigation of how stress impacts telomere shortening in animal models and human aortas. This model could be further utilized to investigate the role of prenatal stress, telomere biology and atherosclerosis pathogenesis in adults.
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Affiliation(s)
- Tomoaki Ito
- Sidney Kimmel Cancer Center. Department of Surgery, The Johns Hopkins University School of Medicine, Baltimore, Maryland, United States.,Department of Surgery, The Johns Hopkins University School of Medicine, Baltimore, Maryland, United States.,Department of Molecular and Comparative Pathobiology, The Johns Hopkins University School of Medicine, Baltimore, Maryland, United States.,Department of Surgery, Juntendo University Shizuoka Hospital, Juntendo University School of Medicine, Shizuoka, Japan, United States
| | - Harumi Saeki
- Department of Molecular and Comparative Pathobiology, The Johns Hopkins University School of Medicine, Baltimore, Maryland, United States.,Department of Pathology, The Johns Hopkins University School of Medicine, Baltimore, Maryland, United States.,Department of Human Pathology, Juntendo University School of Medicine, Tokyo, Japan, United States
| | - Xin Guo
- Department of Molecular and Comparative Pathobiology, The Johns Hopkins University School of Medicine, Baltimore, Maryland, United States
| | - Polina Sysa-Shah
- Department of Urology, The Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Kellie L Tamashiro
- Department of Psychiatry and Behavioral Sciences, The Johns Hopkins University School of Medicine, Baltimore, Maryland, United States
| | - Richard S Lee
- Department of Psychiatry and Behavioral Sciences, The Johns Hopkins University School of Medicine, Baltimore, Maryland, United States
| | - Shun Ishiyama
- Sidney Kimmel Cancer Center. Department of Surgery, The Johns Hopkins University School of Medicine, Baltimore, Maryland, United States.,Department of Molecular and Comparative Pathobiology, The Johns Hopkins University School of Medicine, Baltimore, Maryland, United States.,Department of Coloproctological Surgery, Juntendo University School of Medicine, Tokyo, Japan
| | - Hajime Orita
- Department of Gastroenterology and Minimally Invasive Surgery, Juntendo University School of Medicine, Tokyo, Japan
| | - Koichi Sato
- Department of Surgery, Juntendo University Shizuoka Hospital, Juntendo University School of Medicine, Shizuoka, Japan, United States
| | - Malcolm V Brock
- Department of Surgery, The Johns Hopkins University School of Medicine, Baltimore, Maryland, United States.,Sidney Kimmel Cancer Center, Department of Oncology, The Johns Hopkins University School of Medicine, Baltimore, Maryland, United States
| | - Kathleen L Gabrielson
- Department of Molecular and Comparative Pathobiology, The Johns Hopkins University School of Medicine, Baltimore, Maryland, United States.,Sidney Kimmel Cancer Center, Department of Oncology, The Johns Hopkins University School of Medicine, Baltimore, Maryland, United States
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8
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Liu D, Liu J, Zhang D, Yang W. Advances in relationship between cell senescence and atherosclerosis. Zhejiang Da Xue Xue Bao Yi Xue Ban 2022; 51:95-101. [PMID: 35576118 PMCID: PMC9109755 DOI: 10.3724/zdxbyxb-2021-0270] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Accepted: 11/03/2021] [Indexed: 06/15/2023]
Abstract
Cellular senescence is a biological process associated with the degeneration of cell structure and function, which contribute to age-related diseases. Atherosclerosis is a chronic inflammatory disease that can cause a variety of cardiovascular disorders. In this article, we review the effects of cellular senescence on the development of atherosclerosis through diverse physiopathological changes, focusing on the alterations in senescent organelles and the increased senescence-associated secretory phenotype (SASP), and exploring the relevant therapeutic strategies for atherosclerosis by clearing senescent cells and reducing SASP, to provide new insights for the treatment of atherosclerosis.
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Affiliation(s)
- Dekun Liu
- 1. Faculty of Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Jinan 250300, China
| | - Jiali Liu
- 1. Faculty of Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Jinan 250300, China
| | - Dan Zhang
- 3. Innovation Institute of Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Jinan 250300, China
| | - Wenqing Yang
- 2. Experimental Center, Shandong University of Traditional Chinese Medicine, Jinan 250300, China
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9
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Guzonjić A, Sopić M, Ostanek B, Kotur-Stevuljević J. Telomere length as a biomarker of aging and diseases. ARHIV ZA FARMACIJU 2022. [DOI: 10.5937/arhfarm72-36376] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022] Open
Abstract
As research related to healthspan and lifespan has become a hot topic, the necessity for a reliable and practical biomarker of aging (BoA), which can provide information about mortality and morbidity risk, along with remaining life expectancy, has increased. The chromosome terminus non-coding protective structure that prevents genomic instability is called a telomere. The continual shortening of telomeres, which affects their structure as well as function, is a hallmark of agedness. The aforementioned process is a potential cause of age-related diseases (ARDs), leading to a bad prognosis and a low survival rate, which compromise health and longevity. Hence, studies scrutinizing the BoAs often include telomere length (TL) as a prospective candidate. The results of these studies suggest that TL measurement can only provide an approximate appraisal of the aging rate, and its implementation into clinical practice and routine use as a BoA has many limitations and challenges. Nevertheless, measuring TL while determining other biomarkers can be used to assess biological age. This review focuses on the importance of telomeres in health, senescence, and diseases, as well as on summarizing the results and conclusions of previous studies evaluating TL as a potential BoA.
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10
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Herman AB, Occean JR, Sen P. Epigenetic dysregulation in cardiovascular aging and disease. THE JOURNAL OF CARDIOVASCULAR AGING 2021; 1. [PMID: 34790973 PMCID: PMC8594871 DOI: 10.20517/jca.2021.16] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Cardiovascular disease (CVD) is the leading cause of mortality and morbidity for all sexes, racial and ethnic groups. Age, and its associated physiological and pathological consequences, exacerbate CVD incidence and progression, while modulation of biological age with interventions track with cardiovascular health. Despite the strong link between aging and CVD, surprisingly few studies have directly investigated heart failure and vascular dysfunction in aged models and subjects. Nevertheless, strong correlations have been found between heart disease, atherosclerosis, hypertension, fibrosis, and regeneration efficiency with senescent cell burden and its proinflammatory sequelae. In agreement, senotherapeutics have had success in reducing the detrimental effects in experimental models of cardiovascular aging and disease. Aside from senotherapeutics, cellular reprogramming strategies targeting epigenetic enzymes remain an unexplored yet viable option for reversing or delaying CVD. Epigenetic alterations comprising local and global changes in DNA and histone modifications, transcription factor binding, disorganization of the nuclear lamina, and misfolding of the genome are hallmarks of aging. Limited studies in the aging cardiovascular system of murine models or human patient samples have identified strong correlations between the epigenome, age, and senescence. Here, we compile the findings in published studies linking epigenetic changes to CVD and identify clear themes of epigenetic deregulation during aging. Pending direct investigation of these general mechanisms in aged tissues, this review predicts that future work will establish epigenetic rejuvenation as a potent method to delay CVD.
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Affiliation(s)
- Allison B Herman
- Laboratory of Genetics and Genomics, National Institute on Aging, NIH, Baltimore, MD 21224, USA
| | - James R Occean
- Laboratory of Genetics and Genomics, National Institute on Aging, NIH, Baltimore, MD 21224, USA
| | - Payel Sen
- Laboratory of Genetics and Genomics, National Institute on Aging, NIH, Baltimore, MD 21224, USA
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Gruber HJ, Semeraro MD, Renner W, Herrmann M. Telomeres and Age-Related Diseases. Biomedicines 2021; 9:1335. [PMID: 34680452 PMCID: PMC8533433 DOI: 10.3390/biomedicines9101335] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 09/20/2021] [Accepted: 09/23/2021] [Indexed: 12/24/2022] Open
Abstract
Telomeres are at the non-coding ends of linear chromosomes. Through a complex 3-dimensional structure, they protect the coding DNA and ensure appropriate separation of chromosomes. Aging is characterized by a progressive shortening of telomeres, which compromises their structure and function. Because of their protective function for genomic DNA, telomeres appear to play an important role in the development and progression of many age-related diseases, such as cardiovascular disease (CVD), malignancies, dementia, and osteoporosis. Despite substantial evidence that links telomere length with these conditions, the nature of these observations remains insufficiently understood. Therefore, future studies should address the question of causality. Furthermore, analytical methods should be further improved with the aim to provide informative and comparable results. This review summarize the actual knowledge of telomere biology and the possible implications of telomere dysfunction for the development and progression of age-related diseases. Furthermore, we provide an overview of analytical techniques for the measurement of telomere length and telomerase activity.
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Affiliation(s)
| | | | - Wilfried Renner
- Clinical Institute of Medical and Chemical Laboratory Diagnostics, Medical University of Graz, 8036 Graz, Austria; (H.-J.G.); (M.D.S.); (M.H.)
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12
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Huang YC, Wang CY. Telomere Attrition and Clonal Hematopoiesis of Indeterminate Potential in Cardiovascular Disease. Int J Mol Sci 2021; 22:9867. [PMID: 34576030 PMCID: PMC8467562 DOI: 10.3390/ijms22189867] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 08/31/2021] [Accepted: 09/09/2021] [Indexed: 12/22/2022] Open
Abstract
Clinical evidence suggests that conventional cardiovascular disease (CVD) risk factors cannot explain all CVD incidences. Recent studies have shown that telomere attrition, clonal hematopoiesis of indeterminate potential (CHIP), and atherosclerosis (telomere-CHIP-atherosclerosis, TCA) evolve to play a crucial role in CVD. Telomere dynamics and telomerase have an important relationship with age-related CVD. Telomere attrition is associated with CHIP. CHIP is commonly observed in elderly patients. It is characterized by an increase in blood cell clones with somatic mutations, resulting in an increased risk of hematological cancer and atherosclerotic CVD. The most common gene mutations are DNA methyltransferase 3 alpha (DNMT3A), Tet methylcytosine dioxygenase 2 (TET2), and additional sex combs-like 1 (ASXL1). Telomeres, CHIP, and atherosclerosis increase chronic inflammation and proinflammatory cytokine expression. Currently, their epidemiology and detailed mechanisms related to the TCA axis remain incompletely understood. In this article, we reviewed recent research results regarding the development of telomeres and CHIP and their relationship with atherosclerotic CVD.
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Affiliation(s)
- Yi-Chun Huang
- Division of Cardiology, Chang Gung Memorial Hospital, Linkou Medical Center, Taoyuan City 33305, Taiwan;
| | - Chao-Yung Wang
- Division of Cardiology, Chang Gung Memorial Hospital, Linkou Medical Center, Taoyuan City 33305, Taiwan;
- School of Medicine, College of Medicine, Chang Gung University, Taoyuan City 33302, Taiwan
- Institute of Cellular and System Medicine, National Health Research Institutes, Zhunan 35053, Taiwan
- Department of Medical Science, National Tsing Hua University, Hsinchu 30013, Taiwan
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Telomere Length and Oxidative Stress in Patients with ST-Segment Elevation and Non-ST-Segment Elevation Myocardial Infarction. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2021; 1347:183-195. [PMID: 33959889 DOI: 10.1007/5584_2021_638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
PURPOSE The telomere length is shown to act as a biomarker, especially for biological aging and cardiovascular diseases, and it is also suggested that with this correlation, increased exposure to the oxidative stress accelerates the vascular aging process. Therefore, this study aims to understand the correlation between the plasma oxidative stress index (OSI) status and leukocyte telomere length (LTL) and cardiologic parameters between the ST-segment elevation myocardial infarction (STEMI) and non-ST-segment elevation myocardial infarction (NSTEMI) groups. METHOD One hundred one newly diagnosed patients with STEMI (n = 55) and NSTEMI (n = 46) were included in the study, along with 100 healthy controls who matched the patients in terms of age and gender. Plasma total antioxidant status (TAS), total oxidant status (TOS), and LTL were measured. RESULTS When LTL, TAS, TOS, and OSI values were evaluated between the patient and control group, OSI (p = 0.000) and LTL (p = 0.05) values were statistically significant in the patient group compared to the control group. Evaluation was conducted to understand whether there is a difference between the STEMI and NSTEMI groups. The plasma OSI (p = 0.007) and LTL (p = 0.05) were found to be significantly lower in STEMI patients. However, LTL and OSI results were not statistically significant in NSTEMI patients. CONCLUSION This is the first study evaluating telomere length and oxidative stress in STEMI and NSTEMI patients in Turkey. Our results support the existence of short telomere length in STEMI patients. Future studies on telomere length and oxidative stress will support the importance of our findings.
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Zhang R, Ji Z, Yao Y, Zuo W, Yang M, Qu Y, Su Y, Ma G, Li Y. Identification of hub genes in unstable atherosclerotic plaque by conjoint analysis of bioinformatics. Life Sci 2020; 262:118517. [PMID: 33011223 DOI: 10.1016/j.lfs.2020.118517] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 09/17/2020] [Accepted: 09/25/2020] [Indexed: 02/09/2023]
Abstract
AIMS Unstable atherosclerotic plaque is the main pathological basis of acute coronary syndrome, which is the leading cause of death and disability worldwide. Therefore, we combined multiple bioinformatics tools to identify key genes related to unstable plaque. MAIN METHODS GSE94605 contained 7 plasma sample pools of 175 healthy and 6 sample pools of 150 unstable angina pectoris (UAP) patients, and detected with miRNA array while GSE60993 collected peripheral blood from 7 normal and 9 UAP, and detected with mRNA array. GSE120521 collected carotid plaques from 4 patients and dissected in stable and unstable regions, then detected with RNA-seq. Differentially expressed miRNAs (DEMs) and genes (DEGs) in UAP were re-analyzed. Gene Ontology (GO)/Kyoto Encyclopedia of Genes and Genomes (KEGG) and Protein-protein interaction (PPI) network were applied on top 10 up-regulated or down-regulated DEMs targets, and whole DEGs. MiRNAs-mRNAs network was constructed with these DEMs and DEGs, and the expression profile of genes within the network was finally validated in GSE120521. KEY FINDINGS Totally, 263 up-regulated and 201 down-regulated DEMs were identified in GSE94605, and 78 up-regulated and 29 down-regulated DEGs were identified in GSE60993. Subsequently, a miRNAs-mRNAs network was constructed with 6 up-regulated miRNAs targeted to 12 down-regulated genes, and 4 down-regulated miRNAs targeted to 8 up-regulated genes. Finally, MORF4L2, RAB3IL1 and MMP9 within the network were considered as hub genes in unstable plaque progression after being validated in GSE120521. SIGNIFICANCE These 3 genes may provide new targets for diagnosis and therapy of unstable atherosclerotic plaque.
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Affiliation(s)
- Rui Zhang
- Department of Cardiology, Zhongda Hospital, School of Medicine, Southeast University, PR China
| | - Zhenjun Ji
- Department of Cardiology, Zhongda Hospital, School of Medicine, Southeast University, PR China
| | - Yuyu Yao
- Department of Cardiology, Zhongda Hospital, School of Medicine, Southeast University, PR China
| | - Wenjie Zuo
- Department of Cardiology, Zhongda Hospital, School of Medicine, Southeast University, PR China
| | - Mingming Yang
- Department of Cardiology, Zhongda Hospital, School of Medicine, Southeast University, PR China
| | - Yangyang Qu
- Department of Cardiology, Zhongda Hospital, School of Medicine, Southeast University, PR China
| | - Yamin Su
- Department of Cardiology, Zhongda Hospital, School of Medicine, Southeast University, PR China
| | - Genshan Ma
- Department of Cardiology, Zhongda Hospital, School of Medicine, Southeast University, PR China.
| | - Yongjun Li
- Department of Cardiology, Zhongda Hospital, School of Medicine, Southeast University, PR China.
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Machado-Oliveira G, Ramos C, Marques ARA, Vieira OV. Cell Senescence, Multiple Organelle Dysfunction and Atherosclerosis. Cells 2020; 9:E2146. [PMID: 32977446 PMCID: PMC7598292 DOI: 10.3390/cells9102146] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 09/19/2020] [Accepted: 09/20/2020] [Indexed: 01/10/2023] Open
Abstract
Atherosclerosis is an age-related disorder associated with long-term exposure to cardiovascular risk factors. The asymptomatic progression of atherosclerotic plaques leads to major cardiovascular diseases (CVD), including acute myocardial infarctions or cerebral ischemic strokes in some cases. Senescence, a biological process associated with progressive structural and functional deterioration of cells, tissues and organs, is intricately linked to age-related diseases. Cell senescence involves coordinated modifications in cellular compartments and has been demonstrated to contribute to different stages of atheroma development. Senescence-based therapeutic strategies are currently being pursued to treat and prevent CVD in humans in the near-future. In addition, distinct experimental settings allowed researchers to unravel potential approaches to regulate anti-apoptotic pathways, facilitate excessive senescent cell clearance and eventually reverse atherogenesis to improve cardiovascular function. However, a deeper knowledge is required to fully understand cellular senescence, to clarify senescence and atherogenesis intertwining, allowing researchers to establish more effective treatments and to reduce the cardiovascular disorders' burden. Here, we present an objective review of the key senescence-related alterations of the major intracellular organelles and analyze the role of relevant cell types for senescence and atherogenesis. In this context, we provide an updated analysis of therapeutic approaches, including clinically relevant experiments using senolytic drugs to counteract atherosclerosis.
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Affiliation(s)
- Gisela Machado-Oliveira
- CEDOC, NOVA Medical School, Faculdade de Ciências Médicas, Universidade NOVA de Lisboa, 1169-056 Lisboa, Portugal; (C.R.); (A.R.A.M.)
| | | | | | - Otília V. Vieira
- CEDOC, NOVA Medical School, Faculdade de Ciências Médicas, Universidade NOVA de Lisboa, 1169-056 Lisboa, Portugal; (C.R.); (A.R.A.M.)
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Herrmann W, Herrmann M. The Importance of Telomere Shortening for Atherosclerosis and Mortality. J Cardiovasc Dev Dis 2020; 7:jcdd7030029. [PMID: 32781553 PMCID: PMC7570376 DOI: 10.3390/jcdd7030029] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Revised: 07/29/2020] [Accepted: 07/30/2020] [Indexed: 12/11/2022] Open
Abstract
Telomeres are the protective end caps of chromosomes and shorten with every cell division. Short telomeres are associated with older age and adverse lifestyle factors. Leucocyte telomere length (LTL) has been proposed as a biomarker of biological age. The shortening of LTL with age is the result of the end-replication problem, environmental, and lifestyle-related factors. Epidemiologic studies have shown that LTL predicts cardiovascular disease, all-cause mortality, and death from vascular causes. Age appears to be an important co-variate that explains a substantial fraction of this effect. Although it has been proposed that short telomeres promote atherosclerosis and impair the repair of vascular lesions, existing results are inconsistent. Oxidative stress and chronic inflammation can both accelerate telomere shortening. Multiple factors, including homocysteine (HCY), vitamin B6, and vitamin B12 modulate oxidative stress and inflammation through direct and indirect mechanisms. This review provides a compact overview of telomere physiology and the utility of LTL measurements in atherosclerosis and cardiovascular disease. In addition, it summarizes existing knowledge regarding the impact of oxidative stress, inflammation, HCY, and B-vitamins on telomere function.
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Affiliation(s)
- Wolfgang Herrmann
- Department of Clinical Chemistry, Medical School of the Saarland University, 66421 Homburg, Saar, Germany;
| | - Markus Herrmann
- Clinical Institute of Medical and Chemical Laboratory Diagnostics, Medical University of Graz, 8036 Graz, Austria
- Correspondence: or ; Tel.: +43-316-385-13145; Fax: +43-316-385-13430
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Serino A, Zhao Y, Hwang J, Cullen A, Deeb C, Akhavan N, Arjmandi B, Salazar G. Gender differences in the effect of blackberry supplementation in vascular senescence and atherosclerosis in ApoE -/- mice. J Nutr Biochem 2020; 80:108375. [PMID: 32248057 DOI: 10.1016/j.jnutbio.2020.108375] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2019] [Revised: 01/09/2020] [Accepted: 03/07/2020] [Indexed: 12/20/2022]
Abstract
As the cardiovascular system ages, it becomes more vulnerable to the effects of oxidative stress and inflammation. The aging process, along with external factors such as radiation exposure and lifestyle, induces vascular senescence and accelerates atherosclerotic plaque accumulation. Expression of nicotinamide adenine dinucleotide phosphate oxidase 1 (Nox1), which produces superoxide, is associated with senescence in vascular smooth muscle cells in vitro and atherosclerosis in ApoE-/- mice in vivo. However, it is unknown whether Nox1 could be down-regulated by nutritional interventions aimed to reduce atherosclerosis. Here we study the effect of blackberry supplementation in Nox1 expression and atherosclerosis. Four-month-old ApoE-/- male and female mice were fed low-fat, high-fat or high-fat supplemented with 2% freeze-dried blackberry powder diets for 5 weeks. Analysis of the aorta showed that diet supplemented with blackberry significantly decreased plaque accumulation, senescence associated-β-galactosidase and Nox1 expression in the aorta of male but not female mice. The lipid profile was unchanged by blackberry in both female and male animals. Thus, the known role of Nox1 in atherosclerosis suggests that the atheroprotective effect of blackberry is mediated by Nox1 down-regulation in male mice and that Nox1 is regulated in a gender-dependent manner in females.
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Affiliation(s)
- Alexa Serino
- Department of Nutrition, Food and Exercise Sciences, Florida State University, Tallahassee, FL, USA
| | - Yitong Zhao
- Division of Nephrology and Hypertension, Department of Medicine, University of California, Irvine, CA, USA
| | - Jingwen Hwang
- Department of Nutrition, Food and Exercise Sciences, Florida State University, Tallahassee, FL, USA
| | - Abigail Cullen
- Department of Nutrition, Food and Exercise Sciences, Florida State University, Tallahassee, FL, USA
| | - Carolyn Deeb
- Department of Nutrition, Food and Exercise Sciences, Florida State University, Tallahassee, FL, USA
| | - Neda Akhavan
- Department of Nutrition, Food and Exercise Sciences, Florida State University, Tallahassee, FL, USA
| | - Bahram Arjmandi
- Department of Nutrition, Food and Exercise Sciences, Florida State University, Tallahassee, FL, USA; Center for Advancing Exercise and Nutrition Research on Aging (CAENRA), Florida State University, Tallahassee, FL, USA
| | - Gloria Salazar
- Department of Nutrition, Food and Exercise Sciences, Florida State University, Tallahassee, FL, USA; Center for Advancing Exercise and Nutrition Research on Aging (CAENRA), Florida State University, Tallahassee, FL, USA.
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Chan D, Martin-Ruiz C, Saretzki G, Neely D, Qiu W, Kunadian V. The association of telomere length and telomerase activity with adverse outcomes in older patients with non-ST-elevation acute coronary syndrome. PLoS One 2020; 15:e0227616. [PMID: 31923255 PMCID: PMC6953865 DOI: 10.1371/journal.pone.0227616] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Accepted: 12/22/2019] [Indexed: 12/24/2022] Open
Abstract
Background Non-ST elevation acute coronary syndrome (NSTEACS) occurs more frequently in older patients with an increased occurrence of recurrent cardiac events following the index presentation. Telomeres are structures consisting of repeated DNA sequences as associated shelterin proteins at the ends of chromosomes. We aim to determine whether telomere length (TL) and telomerase activity (TA) predicted poor outcomes in older patients presenting with NSTEACS undergoing invasive care. Method Older patients undergoing invasive management for NSTEACS were recruited to the ICON-1 biomarker study (NCT01933581). Peripheral blood mononuclear cells (PBMC) were recovered on 153 patients. DNA was isolated and mean TL was measured by quantitative PCR expressed as relative T (telomere repeat copy number) to S (single copy gene number) ratio (T/S ratio), and a telomere repeat amplification assay was used to assess TA during index presentation with NSTEACS. Primary clinical outcomes consisted of death, myocardial infarction (MI), unplanned revascularisation, stroke and significant bleeding recorded at 1 year. TL and TA were divided into tertile groups for analysis. Cox proportional hazards regression was performed. Ordinal regression was performed to evaluate the relationship between TL and TA and traditional cardiovascular risk factors at baseline. Results 298 patients were recruited in the ICON-1 study of which 153 had PBMC recovered. The mean age was 81.0 ± 4.0 years (64% male). Mean telomere length T/S ratio was 0.47 ± 0.25 and mean TA was 1.52 ± 0.61 units. The primary composite outcome occurred in 44 (28.8%) patients. There was no association between short TL or low TA and incidence of the primary composite outcome (Hazard Ratio [HR] 1.50, 95% Confidence Interval [CI] 0.68–3.34, p = 0.32 and HR 1.33, 95% CI 0.52–3.36, p = 0.51 respectively). Conclusion TL and TA are not found to be associated with the incidence of adverse outcomes in older patients presenting with NSTEACS undergoing invasive care. Clinical trial registration URL: https://www.clinicaltrials.gov Unique identifier: NCT01933581
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Affiliation(s)
- Danny Chan
- Translational and Clinical Research Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, United Kingdom
- Cardiothoracic Centre, Freeman Hospital, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, United Kingdom
| | - Carmen Martin-Ruiz
- BioScreening Facility, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Gabriele Saretzki
- Ageing Biology Centre and Institute for Cell and Molecular Biosciences, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Dermot Neely
- Department of Biochemistry, Newcastle upon Tyne Hospitals NHS Foundations Trust, United Kingdom
| | - Weiliang Qiu
- Sanofi Genzyme, Framingham, MA, United States of America
| | - Vijay Kunadian
- Translational and Clinical Research Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, United Kingdom
- Cardiothoracic Centre, Freeman Hospital, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, United Kingdom
- * E-mail:
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Shimizu I, Minamino T. Cellular Senescence in Arterial Diseases. J Lipid Atheroscler 2020; 9:79-91. [PMID: 32821723 PMCID: PMC7379072 DOI: 10.12997/jla.2020.9.1.79] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Revised: 12/25/2019] [Accepted: 12/25/2019] [Indexed: 12/11/2022] Open
Abstract
Cell-proliferation potency is limited, as cells cannot proceed through the cell cycle continually. Instead, they eventually show an irreversible arrest of proliferation, commonly referred to as cellular senescence. Following the initial discovery of this phenomenon by Hayflick et al., studies have indicated that cells are also destined to undergo aging. In addition to the irreversible termination of proliferation, senescent cells are characterized by a flattened and enlarged morphology. Senescent cells become pro-inflammatory and contribute to the initiation and maintenance of sustained chronic sterile inflammation. Aging is associated with the accumulation of senescent cells in the cardiovascular system, and in general these cells are considered to be pathogenic because they mediate vascular remodeling. Recently, genetic and pharmacological approaches have enabled researchers to eliminate senescent cells both in vitro and in vivo. The term “senolysis” is now used to refer to the depletion of senescent cells, and evidence indicates that senolysis contributes to the reversal of age-related pathogenic phenotypes without the risk of tumorigenesis. The concept of senolysis has opened new avenues in research on aging, and senolysis may be a promising therapeutic approach for combating age-related disorders, including arterial diseases.
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Affiliation(s)
- Ippei Shimizu
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan.,Division of Molecular Aging and Cell Biology, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Tohru Minamino
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan.,Japan Agency for Medical Research and Development-Core Research for Evolutionary Medical Science and Technology (AMED-CREST), Japan Agency for Medical Research and Development, Tokyo, Japan
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Gu D, Li J, Little J, Li H, Zhang X. Associations between Serum Sex Hormone Concentrations and Telomere Length among U.S. Adults, 1999-2002. J Nutr Health Aging 2020; 24:48-54. [PMID: 31886808 DOI: 10.1007/s12603-019-1291-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
BACKGROUND AND OBJECTIVES Sex hormone concentrations and telomere length are age related responses of human body, while whether there is a direct relation between sex hormone and telomere length is uncertain. Therefore, we used the data of National Health and Nutrition Examination Survey (NHANES) to quantify their direct association. RESEARCH DESIGN AND METHODS A total of 710 women aged 35-60 years and 539 men aged 20-85 years were included from two cycles of the NHANES (1999-2002). Telomere length relative to standard reference DNA (T/S ratio) was measured using quantitative polymerase chain reaction method. Seven hormones in serum (5 in men and 2 in women) were assayed. Logistic regressions were used to calculate the odds ratios to evaluate the telomere length-sex hormones association. RESULTS Men with vigorous physical activity (71.1%) and without history of cardiovascular diseases, diabetes, and lipid-lowering drugs using tended to have a longer telomere length (all P-values < 0.05); while women with longer sedentary time, smaller pregnant or live birth, and with older ages of firth/last birth were likely with longer telomere length (all P-values < 0.05). After adjusted for potential confounders, only anti-Mullerian hormone was positively and stably associated with short leukocytes telomere length in men (OR: 1.098; 95% CI: 1.034, 1.165). We did not detect any significant association of short telomere length with sex hormones in men and women. Discussion and Implications: Serum anti-Mullerian hormone in men was positively and stably associated with telomere length. More large-scaled and well-designed prospective studies are warranted to reconfirm our conclusions.
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Affiliation(s)
- D Gu
- Xi Zhang, PhD, Associated researcher, Clinical Research Unit, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, 1665 Kongjiang Road, Kejiao Building 233B, Shanghai, China 200092. Tel: +86-021-2507-7482; Fax: +86-021-2507-7480; E-mail:
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Diet-induced leukocyte telomere shortening in a baboon model for early stage atherosclerosis. Sci Rep 2019; 9:19001. [PMID: 31831784 PMCID: PMC6908639 DOI: 10.1038/s41598-019-55348-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Accepted: 11/26/2019] [Indexed: 12/20/2022] Open
Abstract
Reported associations between leukocyte telomere length (LTL) attrition, diet and cardiovascular disease (CVD) are inconsistent. This study explores effects of prolonged exposure to a high cholesterol high fat (HCHF) diet on LTL in a baboon model of atherosclerosis. We measured LTL by qPCR in pedigreed baboons fed a chow (n = 105) or HCHF (n = 106) diet for 2 years, tested for effects of diet on LTL, and association between CVD risk factors and atherosclerotic lesions with LTL. Though not different at baseline, after 2 years median LTL is shorter in HCHF fed baboons (P < 0.0001). Diet predicts sex- and age-adjusted LTL and LTL attrition (P = 0.0009 and 0.0156, respectively). Serum concentrations of CVD biomarkers are associated with LTL at the 2-year endpoint and LTL accounts approximately 6% of the variance in aortic lesions (P = 0.04). Although heritable at baseline (h2 = 0.27, P = 0.027) and after 2 years (h2 = 0.46, P = 0.0038), baseline LTL does not predict lesion extent after 2 years. Atherogenic diet influences LTL, and LTL is a potential biomarker for early atherosclerosis. Prolonged exposure to an atherogenic diet decreases LTL and increases LTL attrition, and shortened LTL is associated with early-stage atherosclerosis in pedigreed baboons.
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Molecular imaging of carotid artery atherosclerosis with PET: a systematic review. Eur J Nucl Med Mol Imaging 2019; 47:2016-2025. [PMID: 31786626 DOI: 10.1007/s00259-019-04622-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Accepted: 11/14/2019] [Indexed: 12/21/2022]
Abstract
PURPOSE To conduct a systematic review of articles on PET imaging of carotid atherosclerosis with emphasis on clinical usefulness and comparison with other imaging modalities. METHODS Research articles reporting carotid artery PET imaging with different radiotracers until 30 November 2018 were systematically searched for in Medline/PubMed, Scopus, Embase, Google Scholar, and Cochrane Library. Duplicates were removed, and editorials, case studies, and investigations on feasibility or reproducibility of PET imaging and of patients with end-stage diseases or immunosuppressive medications were omitted. After quality assessment of included articles using Joanna Briggs Institute checklists, all eligible articles were reviewed. RESULTS Of 1718 primary hits, 53 studies comprising 4472 patients, aged 47-91 years (78.8% males), were included and grouped under the following headlines: diagnostic performance, risk factors, laboratory findings, imaging modalities, and treatment. 18F-fluorodeoxyglucose (FDG) (49/53) and 18F-sodium fluoride (NaF) (5/53) were the most utilized tracers to visualize carotid wall inflammation and microcalcification, respectively. Higher carotid FDG uptake was demonstrated in patients with than without symptomatic carotid atherosclerosis. Normal carotid arteries presented with the lowest FDG uptake. In symptomatic atherosclerosis, carotid arteries ipsilateral to a cerebrovascular event had higher FDG uptake than the contralateral carotid artery. FDG uptake was significantly associated with age, male gender, and body mass index in healthy individuals, and in addition with arterial hypertension, hypercholesterolemia, and diabetes mellitus in patients. Histological assessment indicated a strong correlation between microcalcification and NaF uptake in symptomatic patients. Histological evidence of calcification correlated inversely with FDG uptake, which was associated with increased macrophage and CD68 count, both accounting for increased local inflammatory response. CONCLUSION FDG-PET visualizes the inflammatory part of carotid atherosclerosis enabling risk stratification to a certain degree, whereas NaF-PET seems to indicate long-term consequences of ongoing inflammation by demonstrating microcalcification allowing discrimination of atherosclerotic from normal arteries and suggesting clinically significant carotid atherosclerosis.
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Yeh JK, Lin MH, Wang CY. Telomeres as Therapeutic Targets in Heart Disease. ACTA ACUST UNITED AC 2019; 4:855-865. [PMID: 31998853 PMCID: PMC6978555 DOI: 10.1016/j.jacbts.2019.05.009] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Revised: 05/27/2019] [Accepted: 05/28/2019] [Indexed: 12/14/2022]
Abstract
Age-associated CVDs impose a great burden on current health systems. Despite the fact that current strong evidence supports the links among aging, telomere attrition, and CVDs, there is no clear direction for the development of telomere therapeutics against CVDs. This review focuses on immune modulation, CHIP, pharmaceutical interventions, and gene therapy for their therapeutic roles in age-associated CVDs. The future goal of telomere cardiovascular therapy in young subjects is to prevent senescence and diseases, whereas in older adult subjects, the goal is restoration of cardiovascular functions. Further studies on the telomere-CHIP-atherosclerosis axis may shed insights on how to achieve these 2 different therapeutic targets.
Telomeres are double-stranded repeats of G-rich tandem DNA sequences that gradually shorten with each cell division. Aging, inflammation, and oxidative stress accelerate the process of telomere shortening. Telomerase counteracts this process by maintaining and elongating the telomere length. Patients with atherosclerotic diseases and cardiovascular risk factors (e.g., smoking, obesity, sedentary lifestyle, and hypertension) have shorter leukocyte telomere length. Following myocardial infarction, telomerase expression and activity in cardiomyocytes and endothelial cells increase significantly, implying that telomerase plays a role in regulating tissue repairs in heart diseases. Although previous studies have focused on the changes of telomeres in heart diseases and the telomere length as a marker for aging cardiovascular systems, recent studies have explored the potential of telomeres and telomerase in the treatment of cardiovascular diseases. This review discusses the significant advancements of telomere therapeutics in gene therapy, atherosclerosis, anti-inflammation, and immune modulation in patients with cardiovascular diseases.
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Affiliation(s)
- Jih-Kai Yeh
- Department of Cardiology, Chang Gung Memorial Hospital, and Chang Gung University College of Medicine, Taoyuan City, Taiwan
| | - Mei-Hsiu Lin
- Department of Cardiology, Chang Gung Memorial Hospital, and Chang Gung University College of Medicine, Taoyuan City, Taiwan
| | - Chao-Yung Wang
- Department of Cardiology, Chang Gung Memorial Hospital, and Chang Gung University College of Medicine, Taoyuan City, Taiwan.,Institute of Cellular and System Medicine, National Health Research Institutes, Zhunan, Taiwan
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Shah N, Meira LB, Elliott RM, Hoole SP, West NE, Brown AJ, Bennett MR, Garcia-Garcia HM, Kuku KO, Dan K, Kolm P, Mariathas M, Curzen N, Mahmoudi M. DNA Damage and Repair in Patients With Coronary Artery Disease: Correlation With Plaque Morphology Using Optical Coherence Tomography (DECODE Study). CARDIOVASCULAR REVASCULARIZATION MEDICINE 2019; 20:812-818. [DOI: 10.1016/j.carrev.2019.04.028] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2019] [Revised: 04/27/2019] [Accepted: 04/30/2019] [Indexed: 01/12/2023]
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Deoxyribonucleic Acid Repair Activity Is Associated with Healed Coronary Plaque Rupture by Optical Coherence Tomography. J Cardiovasc Transl Res 2019; 12:608-610. [PMID: 31367899 DOI: 10.1007/s12265-019-09904-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/12/2019] [Accepted: 07/23/2019] [Indexed: 02/02/2023]
Abstract
Deoxyribonucleic acid (DNA) damage and repair signaling cascades are related to the development of atherosclerosis. Pathological studies have demonstrated that healed coronary plaque rupture (HCPR) contributes to plaque progression and predisposes to sudden ischemic cardiac death. The objective of this study is to investigate the relationship between HCPR detected by optical coherence tomography (OCT) and DNA ligase. Forty-two patients with both OCT and DNA ligase were prospectively enrolled. The population included patients with stable angina pectoris (SA) and non-ST-elevation myocardial infarction (NSTEMI). It was found that the prevalence of HCPR was greater in subjects with higher DNA ligase activity (correlation coefficient 0.36, p = 0.019). The presence of HCPR in patients with NSTEMI was greater than in patients with SA per OCT analysis; however, there was no statistical difference in this limited population (22.53% versus 12.83%, respectively, p = 0.116). DNA repair activity by DNA ligase was associated with HCPR in advanced coronary artery plaque by OCT.
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Benetos A, Aviv A. Ancestry, Telomere Length, and Atherosclerosis Risk. ACTA ACUST UNITED AC 2019; 10:CIRCGENETICS.117.001718. [PMID: 28615296 DOI: 10.1161/circgenetics.117.001718] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Athanase Benetos
- From the Département de Médecine Gériatrique, CHRU de Nancy, The Institut national de la santé et de la recherche médicale, Université de Lorraine, France (A.B.); and Center of Human Development and Aging, New Jersey Medical School, Rutgers University, Newark (A.A.).
| | - Abraham Aviv
- From the Département de Médecine Gériatrique, CHRU de Nancy, The Institut national de la santé et de la recherche médicale, Université de Lorraine, France (A.B.); and Center of Human Development and Aging, New Jersey Medical School, Rutgers University, Newark (A.A.)
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Grunnet LG, Pilgaard K, Alibegovic A, Jensen CB, Hjort L, Ozanne SE, Bennett M, Vaag A, Brøns C. Leukocyte telomere length is associated with elevated plasma glucose and HbA1c in young healthy men independent of birth weight. Sci Rep 2019; 9:7639. [PMID: 31113969 PMCID: PMC6529491 DOI: 10.1038/s41598-019-43387-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2018] [Accepted: 04/23/2019] [Indexed: 01/24/2023] Open
Abstract
Telomeres are protein-bound regions of repetitive nucleotide sequences (TTAGGG) at the end of human chromosomes, and their length is a marker of cellular aging. Intrauterine growth restriction is associated with shorter blood cell telomeres at birth and individuals with type 2 diabetes have shorter telomeres. Individuals with a low birth weight (LBW) have an increased risk of metabolic disease and type 2 diabetes. Therefore, we aimed to investigate the relationship between birth weight and telomere length and the association between birth weight, telomere length and cardiometabolic phenotype in adulthood. Young, healthy men with LBW (n = 55) and normal birth weight (NBW) (n = 65) were examined including blood pressure, blood samples and body composition. Leukocyte telomere length was determined using a high-throughput qPCR method. The LBW men were more insulin resistant as determined by the HOMA-IR index. There was no difference in telomere length between LBW and NBW subjects. When adjusting for birth weight and cohort effect, significant negative associations between telomere length and fasting glucose (P = 0.003) and HbA1c (P = 0.0008) were found. In conclusion, no significant difference in telomere length was found between LBW and NBW men. The telomere length was negatively associated with glucose concentrations and HbA1c levels within the normal non-diabetic range independent of birth weight.
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Affiliation(s)
- L G Grunnet
- Department of Endocrinology, Diabetes & Metabolism, Rigshospitalet, Copenhagen, Denmark. .,The Danish Diabetes Academy, Odense, Denmark.
| | - K Pilgaard
- Nordsjællands Hospital, Hillerød, Denmark
| | - A Alibegovic
- Steno Diabetes Center Copenhagen, Gentofte, Denmark
| | | | - L Hjort
- Department of Endocrinology, Diabetes & Metabolism, Rigshospitalet, Copenhagen, Denmark
| | - S E Ozanne
- University of Cambridge Metabolic Research Laboratories and MRC metabolic Diseases Unit, Cambridge, UK
| | - M Bennett
- Division of Cardiovascular Medicine, Addenbrooke's Hospital, Cambridge, UK
| | - A Vaag
- Department of Endocrinology, Diabetes & Metabolism, Rigshospitalet, Copenhagen, Denmark.,Cardiovascular and Metabolic Disease (CVMD) Translational Medicine Unit, Early Clinical Development, IMED Biotech Unit, AstraZeneca, Gothenburg, Sweden
| | - C Brøns
- Department of Endocrinology, Diabetes & Metabolism, Rigshospitalet, Copenhagen, Denmark
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Herrmann M, Pusceddu I, März W, Herrmann W. Telomere biology and age-related diseases. Clin Chem Lab Med 2019; 56:1210-1222. [PMID: 29494336 DOI: 10.1515/cclm-2017-0870] [Citation(s) in RCA: 108] [Impact Index Per Article: 21.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2017] [Accepted: 01/30/2018] [Indexed: 11/15/2022]
Abstract
Telomeres are the protective end caps of chromosomes and shorten with every cell division. Telomere length has been proposed as a biomarker of biological age and a risk factor for age-related diseases. Epidemiologic studies show an association between leukocyte telomere length (LTL) and mortality. There is solid evidence that links LTL with cardiovascular disease. Short telomeres promote atherosclerosis and impair the repair of vascular lesions. Alzheimer's disease patients have also a reduced LTL. Telomeres measured in tumor tissue from breast, colon and prostate are shorter than in healthy tissue from the same organ and the same patient. In healthy tissue directly adjacent to these tumors, telomeres are also shorter than in cells that are more distant from the cancerous lesion. A reduced telomere length in cancer tissue from breast, colon and prostate is associated with an advanced disease state at diagnosis, faster disease progression and poorer survival. By contrast, results regarding LTL and cancer are inconsistent. Furthermore, the majority of studies did not find significant associations between LTL, bone mineral density (BMD) and osteoporosis. The present manuscript gives an overview about our current understanding of telomere biology and reviews existing knowledge regarding the relationship between telomere length and age-related diseases.
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Affiliation(s)
- Markus Herrmann
- Department of Clinical Pathology, Bolzano Hospital, Lorenz-Boehler-Str. 5, 39100 Bolzano, Italy.,Clinical Institute of Medical and Chemical Laboratory Diagnostics, Medical University of Graz, Graz, Austria
| | - Irene Pusceddu
- Laboratory of Clinical Pathology, Hospital of Bolzano, Bolzano, Italy
| | - Winfried März
- Clinical Institute of Medical and Chemical Laboratory Diagnostics, Medical University of Graz, Graz, Austria.,Medical Clinic V (Nephrology, Hypertensiology, Rheumatology, Endocrinology, Diabetology), Medical Faculty of Mannheim, University of Heidelberg, Mannheim, Germany.,Synlab Academy, Synlab Holding Deutschland GmbH, Mannheim, Germany
| | - Wolfgang Herrmann
- Department of Clinical Chemistry, University of Saarland, Homburg, Germany
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Calcium-Binding Nanoparticles for Vascular Disease. REGENERATIVE ENGINEERING AND TRANSLATIONAL MEDICINE 2019. [DOI: 10.1007/s40883-018-0083-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Chin DD, Chowdhuri S, Chung EJ. Calcium-binding nanoparticles for vascular disease. REGENERATIVE ENGINEERING AND TRANSLATIONAL MEDICINE 2019; 5:74-85. [PMID: 31106257 PMCID: PMC6516760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Cardiovascular disease (CVD) including atherosclerosis is the leading cause of death worldwide. As CVDs and atherosclerosis develop, plaques begin to form in the blood vessels and become calcified. Calcification within the vasculature and atherosclerotic plaques have been correlated with rupture and consequently, acute myocardial infarction. However, current imaging methods to identify vascular calcification have limitations in determining plaque composition and structure. Nanoparticles can overcome these limitations due to their versatility and ability to incorporate a wide range of targeting and contrast agents. In this review, we summarize the current understanding of calcification in atherosclerosis, their role in instigating plaque instability, and clinical methodologies to detect and analyze vascular calcification. In addition, we highlight the potential of calcium-targeting ligands and nanoparticles to create novel calcium-detecting tools.
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Affiliation(s)
- Deborah D. Chin
- Department of Biomedical Engineering, University of Southern California, Los Angeles, CA, USA
| | - Sampreeti Chowdhuri
- Department of Biomedical Engineering, University of Southern California, Los Angeles, CA, USA
| | - Eun Ji Chung
- Department of Biomedical Engineering, University of Southern California, Los Angeles, CA, USA
- Department of Chemical Engineering and Materials Science, University of Southern California, Los Angeles, CA, USA
- Eli and Edythe Broad Center for Regenerative Medicine and Stem Cell Research, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
- Division of Nephrology and Hypertension, Department of Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
- Division of Vascular Surgery and Endovascular Therapy, Department of Surgery, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
- Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
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Protective Role of Polyphenols against Vascular Inflammation, Aging and Cardiovascular Disease. Nutrients 2018; 11:nu11010053. [PMID: 30597847 PMCID: PMC6357531 DOI: 10.3390/nu11010053] [Citation(s) in RCA: 132] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2018] [Revised: 12/19/2018] [Accepted: 12/21/2018] [Indexed: 01/02/2023] Open
Abstract
Aging is a major risk factor in the development of chronic diseases affecting various tissues including the cardiovascular system, muscle and bones. Age-related diseases are a consequence of the accumulation of cellular damage and reduced activity of protective stress response pathways leading to low-grade systemic inflammation and oxidative stress. Both inflammation and oxidative stress are major contributors to cellular senescence, a process in which cells stop proliferating and become dysfunctional by secreting inflammatory molecules, reactive oxygen species (ROS) and extracellular matrix components that cause inflammation and senescence in the surrounding tissue. This process is known as the senescence associated secretory phenotype (SASP). Thus, accumulation of senescent cells over time promotes the development of age-related diseases, in part through the SASP. Polyphenols, rich in fruits and vegetables, possess antioxidant and anti-inflammatory activities associated with protective effects against major chronic diseases, such as cardiovascular disease (CVD). In this review, we discuss molecular mechanisms by which polyphenols improve anti-oxidant capacity, mitochondrial function and autophagy, while reducing oxidative stress, inflammation and cellular senescence in vascular smooth muscle cells (VSMCs) and endothelial cells (ECs). We also discuss the therapeutic potential of polyphenols in reducing the effects of the SASP and the incidence of CVD.
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Katsuumi G, Shimizu I, Yoshida Y, Minamino T. Vascular Senescence in Cardiovascular and Metabolic Diseases. Front Cardiovasc Med 2018; 5:18. [PMID: 29556500 PMCID: PMC5845435 DOI: 10.3389/fcvm.2018.00018] [Citation(s) in RCA: 129] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2017] [Accepted: 02/21/2018] [Indexed: 01/08/2023] Open
Abstract
In mammals, aging is associated with accumulation of senescent cells. Stresses such as telomere shortening and reactive oxygen species induce “cellular senescence”, which is characterized by growth arrest and alteration of the gene expression profile. Chronological aging is associated with development of age-related diseases, including heart failure, diabetes, and atherosclerotic disease, and studies have shown that accumulation of senescent cells has a causative role in the pathology of these age-related disorders. Endothelial cell senescence has been reported to develop in heart failure and promotes pathologic changes in the failing heart. Senescent endothelial cells and vascular smooth muscle cells are found in atherosclerotic plaque, and studies indicate that these cells are involved in progression of plaque. Diabetes is also linked to accumulation of senescent vascular endothelial cells, while endothelial cell senescence per se induces systemic glucose intolerance by inhibiting skeletal muscle metabolism. A close connection between derangement of systemic metabolism and cellular senescence is also well recognized. Aging is a complex phenomenon, and there is no simple approach to understanding the whole process. However, there is accumulating evidence that cellular senescence has a central role in the development and progression of various undesirable aspects of aging. Suppression of cellular senescence or elimination of senescent cells reverses phenotypic changes of aging in several models, and proof-of-concept has been established that inhibiting accumulation of senescent cells could become a next generation therapy for age-related disorders. It is clear that cellular senescence drives various pathological changes associated with aging. Accordingly, further investigation into the role of this biological process in age-related disorders and discovery of senolytic compounds are important fields for future exploration.
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Affiliation(s)
- Goro Katsuumi
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Ippei Shimizu
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan.,Division of Molecular Aging and Cell Biology, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Yohko Yoshida
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan.,Division of Molecular Aging and Cell Biology, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Tohru Minamino
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
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Gomez-Delgado F, Delgado-Lista J, Lopez-Moreno J, Rangel-Zuñiga OA, Alcala-Diaz JF, Leon-Acuña A, Corina A, Yubero-Serrano E, Torres-Peña JD, Camargo A, Garcia-Rios A, Caballero J, Castaño J, Ordovas JM, Lopez-Miranda J, Perez-Martinez P. Telomerase RNA Component Genetic Variants Interact With the Mediterranean Diet Modifying the Inflammatory Status and its Relationship With Aging: CORDIOPREV Study. J Gerontol A Biol Sci Med Sci 2018; 73:327-332. [PMID: 27707805 DOI: 10.1093/gerona/glw194] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2016] [Accepted: 09/13/2016] [Indexed: 11/15/2022] Open
Abstract
Background Leukocyte telomere length (LTL) attrition has been associated with age-related diseases. Telomerase RNA Component (TERC) genetic variants have been associated with LTL; whereas fatty acids (FAs) can interact with genetic factors and influence in aging. We explore whether variability at the TERC gene locus interacts with FA profile and two healthy diets (low-fat diet vs Mediterranean diet [MedDiet]) modulating LTL, glucose metabolism, and inflammation status in coronary heart disease (CHD) patients. Methods Inflammation status (high-sensitivity C-reactive protein [hsCRP], glucose metabolism-glucose, insulin, and glycated hemoglobin [HbA1c], and homeostasis model assessment of insulin resistance [HOMA-IR]), LTL, FAs, and single nucleotide polymorphisms (SNPs) of the TERC gene (rs12696304, rs16847897, and rs3772190) were determined in 1,002 patients from the CORDIOPREV study (NCT00924937). Results We report an interaction of the TERC rs12696304 SNP with monounsaturated fatty acid (MUFA) affecting LTL (p interaction = .01) and hsCRP (p interaction = .03). Among individuals with MUFA levels above the median, CC individuals showed higher LTL and lower hsCRP than G-allele carriers. Moreover, MedDiet interacted with TERC rs12696304 SNP (p interaction = .03). Specifically, CC individuals displayed a greater decrease in hsCRP than G-allele carriers. These results were not adjusted for multiple statistical testing and p less than .05 was considered significant. Conclusions Our findings suggest that the TERC rs12696304 SNP interacts with MUFA improving inflammation status and telomere attrition related with CHD. Moreover, the MedDiet intervention improves the inflammatory profile in CC individuals compared with the G-allele carriers. These interactions could provide a right strategy for personalized nutrition in CHD patients.
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Affiliation(s)
- Francisco Gomez-Delgado
- Lipids and Atherosclerosis Unit, IMIBIC/Reina Sofia University Hospital/University of Cordoba, Spain.,CIBER Fisiopatologia Obesidad y Nutricion (CIBEROBN), Instituto de Salud Carlos III, Madrid, Spain
| | - Javier Delgado-Lista
- Lipids and Atherosclerosis Unit, IMIBIC/Reina Sofia University Hospital/University of Cordoba, Spain.,CIBER Fisiopatologia Obesidad y Nutricion (CIBEROBN), Instituto de Salud Carlos III, Madrid, Spain
| | - Javier Lopez-Moreno
- Lipids and Atherosclerosis Unit, IMIBIC/Reina Sofia University Hospital/University of Cordoba, Spain.,CIBER Fisiopatologia Obesidad y Nutricion (CIBEROBN), Instituto de Salud Carlos III, Madrid, Spain
| | - Oriol Alberto Rangel-Zuñiga
- Lipids and Atherosclerosis Unit, IMIBIC/Reina Sofia University Hospital/University of Cordoba, Spain.,CIBER Fisiopatologia Obesidad y Nutricion (CIBEROBN), Instituto de Salud Carlos III, Madrid, Spain
| | - Juan Francisco Alcala-Diaz
- Lipids and Atherosclerosis Unit, IMIBIC/Reina Sofia University Hospital/University of Cordoba, Spain.,CIBER Fisiopatologia Obesidad y Nutricion (CIBEROBN), Instituto de Salud Carlos III, Madrid, Spain
| | - Ana Leon-Acuña
- Lipids and Atherosclerosis Unit, IMIBIC/Reina Sofia University Hospital/University of Cordoba, Spain.,CIBER Fisiopatologia Obesidad y Nutricion (CIBEROBN), Instituto de Salud Carlos III, Madrid, Spain
| | - Andreea Corina
- Lipids and Atherosclerosis Unit, IMIBIC/Reina Sofia University Hospital/University of Cordoba, Spain.,CIBER Fisiopatologia Obesidad y Nutricion (CIBEROBN), Instituto de Salud Carlos III, Madrid, Spain
| | - Elena Yubero-Serrano
- Lipids and Atherosclerosis Unit, IMIBIC/Reina Sofia University Hospital/University of Cordoba, Spain.,CIBER Fisiopatologia Obesidad y Nutricion (CIBEROBN), Instituto de Salud Carlos III, Madrid, Spain
| | - Jose David Torres-Peña
- Lipids and Atherosclerosis Unit, IMIBIC/Reina Sofia University Hospital/University of Cordoba, Spain.,CIBER Fisiopatologia Obesidad y Nutricion (CIBEROBN), Instituto de Salud Carlos III, Madrid, Spain
| | - Antonio Camargo
- Lipids and Atherosclerosis Unit, IMIBIC/Reina Sofia University Hospital/University of Cordoba, Spain.,CIBER Fisiopatologia Obesidad y Nutricion (CIBEROBN), Instituto de Salud Carlos III, Madrid, Spain
| | - Antonio Garcia-Rios
- Lipids and Atherosclerosis Unit, IMIBIC/Reina Sofia University Hospital/University of Cordoba, Spain.,CIBER Fisiopatologia Obesidad y Nutricion (CIBEROBN), Instituto de Salud Carlos III, Madrid, Spain
| | - Javier Caballero
- Biochemistry Laboratory and Reina Sofia University Hospital, Cordoba, Spain
| | - Justo Castaño
- CIBER Fisiopatologia Obesidad y Nutricion (CIBEROBN), Instituto de Salud Carlos III, Madrid, Spain.,Department of Cell Biology, Physiology, and Immunology, IMIBIC/Reina Sofia University Hospital/University of Cordoba, Spain
| | - Jose M Ordovas
- Nutrition and Genomics Laboratory, J.M.-US Department of Agriculture Human Nutrition Research Center on Aging at Tufts University, Boston, Massachusetts.,IMDEA Alimentacion, Madrid, Spain.,CNIC, Madrid, Spain
| | - Jose Lopez-Miranda
- Lipids and Atherosclerosis Unit, IMIBIC/Reina Sofia University Hospital/University of Cordoba, Spain.,CIBER Fisiopatologia Obesidad y Nutricion (CIBEROBN), Instituto de Salud Carlos III, Madrid, Spain
| | - Pablo Perez-Martinez
- Lipids and Atherosclerosis Unit, IMIBIC/Reina Sofia University Hospital/University of Cordoba, Spain.,CIBER Fisiopatologia Obesidad y Nutricion (CIBEROBN), Instituto de Salud Carlos III, Madrid, Spain
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Docherty CK, Carswell A, Friel E, Mercer JR. Impaired mitochondrial respiration in human carotid plaque atherosclerosis: A potential role for Pink1 in vascular smooth muscle cell energetics. Atherosclerosis 2018; 268:1-11. [PMID: 29156421 PMCID: PMC6565844 DOI: 10.1016/j.atherosclerosis.2017.11.009] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/22/2017] [Revised: 10/30/2017] [Accepted: 11/10/2017] [Indexed: 02/06/2023]
Abstract
BACKGROUND AND AIMS DNA damage and mitochondrial dysfunction are thought to play an essential role in ageing and the energetic decline of vascular smooth muscle cells (VSMCs) essential for maintaining plaque integrity. We aimed to better understand VSMCs and identify potentially useful compensatory pathways that could extend their lifespan. Moreover, we wanted to assess if defects in mitochondrial respiration exist in human atherosclerotic plaques and to identify the appropriate markers that may reflect a switch in VSMC energy metabolism. METHODS Human plaque tissue and cells were assessed for composition and evidence of DNA damage, repair capacity and mitochondrial dysfunction. Fresh plaque tissue was evaluated using high resolution oxygen respirometry to assess oxidative metabolism. Recruitment and processing of the mitochondrial regulator of autophagy Pink1 kinase was investigated in combination with transcriptional and protein markers associated with a potential switch to a more glycolytic metabolism. RESULTS Human VSMC have increased nuclear (nDNA) and mitochondrial (mtDNA) damage and reduced repair capacity. A subset of VSMCs within plaque cap had decreased oxidative phosphorylation and expression of Pink1 kinase. Plaque cells demonstrated increased glycolytic activity in response to loss of mitochondrial function. A potential compensatory glycolytic program may act as energetic switch via AMP kinase (AMPK) and hexokinase 2 (Hex2). CONCLUSIONS We have identified a subset of plaque VSMCs required for plaque stability that have increased mitochondrial dysfunction and decreased oxidative phosphorylation. Pink1 kinase may initiate a cellular response to promote a compensatory glycolytic program associated with upregulation of AMPK and Hex2.
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MESH Headings
- AMP-Activated Protein Kinases/metabolism
- Carotid Arteries/enzymology
- Carotid Arteries/pathology
- Carotid Artery Diseases/enzymology
- Carotid Artery Diseases/genetics
- Carotid Artery Diseases/pathology
- Cells, Cultured
- DNA Damage
- DNA, Mitochondrial/genetics
- DNA, Mitochondrial/metabolism
- Energy Metabolism
- Glycolysis
- Hexokinase/metabolism
- Humans
- Mitochondria, Muscle/enzymology
- Mitochondria, Muscle/pathology
- Muscle, Smooth, Vascular/enzymology
- Muscle, Smooth, Vascular/pathology
- Myocytes, Smooth Muscle/enzymology
- Myocytes, Smooth Muscle/pathology
- Oxidative Phosphorylation
- Oxidative Stress
- Plaque, Atherosclerotic
- Protein Kinases/metabolism
- Signal Transduction
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Affiliation(s)
- Craig K Docherty
- Institute of Cardiovascular and Medical Sciences, College of Medical Veterinary and Life Sciences, University Avenue, University of Glasgow, Glasgow, G12 8TA, Scotland, United Kingdom
| | - Andy Carswell
- Institute of Cardiovascular and Medical Sciences, College of Medical Veterinary and Life Sciences, University Avenue, University of Glasgow, Glasgow, G12 8TA, Scotland, United Kingdom
| | - Elaine Friel
- Institute of Cardiovascular and Medical Sciences, College of Medical Veterinary and Life Sciences, University Avenue, University of Glasgow, Glasgow, G12 8TA, Scotland, United Kingdom
| | - John R Mercer
- Institute of Cardiovascular and Medical Sciences, College of Medical Veterinary and Life Sciences, University Avenue, University of Glasgow, Glasgow, G12 8TA, Scotland, United Kingdom.
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Hamilton JA, Hasturk H, Kantarci A, Serhan CN, Van Dyke T. Atherosclerosis, Periodontal Disease, and Treatment with Resolvins. Curr Atheroscler Rep 2017; 19:57. [PMID: 29110146 DOI: 10.1007/s11883-017-0696-4] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
PURPOSE OF REVIEW This review aims to discuss the existing evidence on the link between atherosclerosis and periodontitis by particularly presenting new findings that link the pathology and therapy of these diseases. Acute vascular ischemic events that can lead to stroke or myocardial infarction are initiated by inflammatory processes leading to rupture or erosion of plaques susceptible to thrombosis ("high risk" or "vulnerable"). These are highly inflamed plaques residing in the media and adventitia that may not be detected by angiography measurments of luminal narrowing. Statistically significant excess risk for atherosclerotic cardiovascular disease has been reported in persons with periodontitis independent of established risk factors. We hypothesized that the systemic pathologic links also represent potential therapeutic links. RECENT FINDINGS We recently demonstrated that periodontal inflammation promotes atherosclerotic plaque inflammation and destabilization. As discrete pathological regions, these plaques with a high susceptibility to rupture can be imaged and differentiated from lower risk plaques. In cholesterol-fed rabbits with periodontal disease, circulating inflammatory mediators were also significantly elevated thereby contributing to "vulnerable blood," a systemic characteristic of high risk for cardiovascular events. New studies show that certain lipid mediators, including lipoxins and resolvins, are potent in preventing and possibly treating a number of inflammation-associated diseases, including periodontitis and vascular inflammation. The concept of the vulnerable patient and the pro-resolving approach open new terrain for discovery of paradigm-changing therapies for the prevention and treatment of two of the most common diseases of man. Importantly, lipoxins and resolvins are natural receptor agonists that do not exhibit the same pro-atherogenic side effects attributed to anti-inflammatory medications (e.g., NSAIDs) but rather coordinate resolution of inflammation and a return to homeostasis.
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Affiliation(s)
- James A Hamilton
- Department of Physiology and Biophysics, Boston University School of Medicine, 700 Albany Street, W302, Boston, MA, 02118-2526, USA.
| | - Hatice Hasturk
- Department of Applied Oral Sciences, The Forsyth Institute, 245 First Street, Cambridge, MA, 02142, USA
| | - Alpdogan Kantarci
- Department of Applied Oral Sciences, The Forsyth Institute, 245 First Street, Cambridge, MA, 02142, USA
| | - Charles N Serhan
- Center for Experimental Therapeutics and Reperfusion Injury, Department of Anesthesiology, Perioperative and Pain Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, 02115, USA
| | - Thomas Van Dyke
- Department of Applied Oral Sciences, The Forsyth Institute, 245 First Street, Cambridge, MA, 02142, USA
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Expression of miR-23a induces telomere shortening and is associated with poor clinical outcomes in patients with coronary artery disease. Clin Sci (Lond) 2017. [PMID: 28646123 DOI: 10.1042/cs20170242] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Telomeric repeat binding factor (TRF) 2 (TRF2) plays an important role in telomere maintenance. miR-23a may directly inhibit TRF2 expression, thereby, inducing telomere shortening and cellular senescence. The present study aimed to determine whether miR-23a and TRF2 are expressed in patients with coronary artery disease (CAD), and whether pitavastatin might affect these levels. The present study included 104 patients with CAD and 50 controls. Patients with CAD were randomly divided into two subgroups (a moderate lipid lowering therapy (LLT) group and an aggressive LLT group). Peripheral blood mononuclear cells (PBMCs) were taken from patients with CAD and from controls at baseline and after 12 months. Levels of miR-23a were higher in the CAD group than in the controls. Levels of TRF2 protein were lower in the CAD group than in the controls. Our randomized clinical study showed that aggressive LLT decreased miR-23a and increased TRF2 levels, whereas moderate LLT generated no change in these levels. Our transfected cell model showed that miR-23a controlled TRF2 expression. After a mean follow-up of 339 days, cardiovascular events were associated with high miR-23a, low TRF2 or low relative telomere length. Multivariate analysis showed that levels of miR-23a (RR: 4.9, 95% CI: 1.9-14.3) were a strong predictor of cardiovascular events after adjustment for baseline characteristics. In conclusion, elevated levels of miR-23a play an important role in coronary atherosclerosis via down-regulated TRF2, and may provide important prognostic information in patients with CAD. Additionally, aggressive LLT may prevent telomere erosion via down-regulated miR-23a.
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Bourantas CV, Crake T, Zhang YJ, Ozkor M, Ahmed J, Garcia-Garcia HM, Serruys PW. Intravascular imaging in cardiovascular ageing. Exp Gerontol 2017; 109:31-37. [PMID: 28522312 DOI: 10.1016/j.exger.2017.05.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2017] [Revised: 04/19/2017] [Accepted: 05/14/2017] [Indexed: 11/16/2022]
Abstract
Ageing is related to complex molecular, inflammatory and biochemical changes that affect coronary pathology and often lead to coronary artery disease and cardiovascular events. Intravascular imaging is considered as the ideal technique to study coronary plaque morphology and assess its burden. Over the recent years several studies have been performed that investigated the association between pathophysiological mechanisms that promote vascular ageing and plaque morphology. In addition, several reports have compared plaque pathology in different age groups and a few studies included serial intravascular imaging to assess changes in the atheroma burden and compositional characteristics of the plaque. This review article summarizes the evidence derived from intravascular imaging studies about the implications of vascular ageing on coronary artery morphology and discusses the potential of coronary imaging in assessing atherosclerotic evolution.
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Affiliation(s)
- Christos V Bourantas
- Barts Heart Centre, Barts Health NHS Trust, London, UK; Institute of Cardiovascular Sciences, University College London, London, UK.
| | - Tom Crake
- Barts Heart Centre, Barts Health NHS Trust, London, UK
| | - Yao-Jun Zhang
- Department of Cardiology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Mick Ozkor
- Barts Heart Centre, Barts Health NHS Trust, London, UK
| | - Javed Ahmed
- Freeman Hospital, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK
| | | | - Patrick W Serruys
- Thoraxcenter, Erasmus Medical Center, Rotterdam, The Netherlands; International Centre for Circulatory Health, NHLI, Imperial College London, London, UK
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Bergström I, Lundberg AK, Jönsson S, Särndahl E, Ernerudh J, Jonasson L. Annexin A1 in blood mononuclear cells from patients with coronary artery disease: Its association with inflammatory status and glucocorticoid sensitivity. PLoS One 2017; 12:e0174177. [PMID: 28329022 PMCID: PMC5362084 DOI: 10.1371/journal.pone.0174177] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2016] [Accepted: 03/04/2017] [Indexed: 01/08/2023] Open
Abstract
Annexin A1 (AnxA1) is a key player in resolution of inflammation and a mediator of glucocorticoid actions. In atherosclerotic tissue, increased expression of AnxA1 has been associated with protective plaque-stabilizing effects. Here, we investigated the expression of AnxA1 in peripheral blood mononuclear cells (PBMCs) from patients with coronary artery disease (CAD). Blood was collected from 57 patients with stable CAD (SCAD) and 41 healthy controls. We also included a minor group (n = 10) with acute coronary syndrome (ACS). AnxA1 mRNA was measured in PBMCs. Expression of AnxA1 protein (total and surface-bound) and glucocorticoid receptors (GR) were detected in PBMC subsets by flow cytometry. Also, salivary cortisol, interleukin(IL)-6 and IL-10 in plasma, and LPS-induced cytokine secretion from PBMCs, with or without dexamethasone, were assessed. AnxA1 mRNA was found to be slightly increased in PBMCs from SCAD patients compared with controls. However, protein expression of AnxA1 or GRs in PBMC subsets did not differ between SCAD patients and controls, despite SCAD patients showing a more proinflammatory cytokine profile ex vivo. Only surface expression of AnxA1 on monocytes correlated with dexamethasone-mediated suppression of cytokines. In ACS patients, a marked activation of AnxA1 was seen involving both gene expression and translocation of protein to cell surface probably reflecting a rapid glucocorticoid action modulating the acute inflammatory response in ACS. To conclude, surface expression of AnxA1 on monocytes may reflect the degree of glucocorticoid sensitivity. Speculatively, "normal" surface expression of AnxA1 indicates that anti-inflammatory capacity is impaired in SCAD patients.
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Affiliation(s)
- Ida Bergström
- Department of Medical and Health Sciences, Division of Cardiovascular Medicine, Faculty of Health Sciences, Linköping University, Linköping, Sweden
- Department of Clinical Immunology and Transfusion Medicine, Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden
| | - Anna K. Lundberg
- Department of Medical and Health Sciences, Division of Cardiovascular Medicine, Faculty of Health Sciences, Linköping University, Linköping, Sweden
| | - Simon Jönsson
- Department of Medical and Health Sciences, Division of Cardiovascular Medicine, Faculty of Health Sciences, Linköping University, Linköping, Sweden
| | - Eva Särndahl
- Department of Clinical Medicine, School of Health and Medical Sciences, and iRiSC - Inflammatory Response and Infection Susceptibility Centre, Faculty of Medicine and Health, Örebro University, Örebro, Sweden
| | - Jan Ernerudh
- Department of Clinical Immunology and Transfusion Medicine, Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden
| | - Lena Jonasson
- Department of Medical and Health Sciences, Division of Cardiovascular Medicine, Faculty of Health Sciences, Linköping University, Linköping, Sweden
- * E-mail:
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The Telomere/Telomerase System in Chronic Inflammatory Diseases. Cause or Effect? Genes (Basel) 2016; 7:genes7090060. [PMID: 27598205 PMCID: PMC5042391 DOI: 10.3390/genes7090060] [Citation(s) in RCA: 76] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2016] [Revised: 07/26/2016] [Accepted: 08/29/2016] [Indexed: 12/23/2022] Open
Abstract
Telomeres are specialized nucleoprotein structures located at the end of linear chromosomes and telomerase is the enzyme responsible for telomere elongation. Telomerase activity is a key component of many cancer cells responsible for rapid cell division but it has also been found by many laboratories around the world that telomere/telomerase biology is dysfunctional in many other chronic conditions as well. These conditions are characterized by chronic inflammation, a situation mostly overlooked by physicians regarding patient treatment. Among others, these conditions include diabetes, renal failure, chronic obstructive pulmonary disease, etc. Since researchers have in many cases identified the association between telomerase and inflammation but there are still many missing links regarding this correlation, the latest findings about this phenomenon will be discussed by reviewing the literature. Our focus will be describing telomere/telomerase status in chronic diseases under the prism of inflammation, reporting molecular findings where available and proposing possible future approaches.
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Abstract
Telomeres are tandem repeat DNA sequences present at the ends of each eukaryotic chromosome to stabilize the genome structure integrity. Telomere lengths progressively shorten with each cell division. Inflammation and oxidative stress, which are implicated as major mechanisms underlying cardiovascular diseases, increase the rate of telomere shortening and lead to cellular senescence. In clinical studies, cardiovascular risk factors such as smoking, obesity, sedentary lifestyle, and hypertension have been associated with short leukocyte telomere length. In addition, low telomerase activity and short leukocyte telomere length have been observed in atherosclerotic plaque and associated with plaque instability, thus stroke or acute myocardial infarction. The aging myocardium with telomere shortening and accumulation of senescent cells limits the tissue regenerative capacity, contributing to systolic or diastolic heart failure. In addition, patients with ion-channel defects might have genetic imbalance caused by oxidative stress-related accelerated telomere shortening, which may subsequently cause sudden cardiac death. Telomere length can serve as a marker for the biological status of previous cell divisions and DNA damage with inflammation and oxidative stress. It can be integrated into current risk prediction and stratification models for cardiovascular diseases and can be used in precise personalized treatments. In this review, we summarize the current understanding of telomeres and telomerase in the aging process and their association with cardiovascular diseases. In addition, we discuss therapeutic interventions targeting the telomere system in cardiovascular disease treatments.
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Yeh JK, Wang CY. Telomeres and Telomerase in Cardiovascular Diseases. Genes (Basel) 2016; 7:genes7090058. [PMID: 27598203 PMCID: PMC5042389 DOI: 10.3390/genes7090058] [Citation(s) in RCA: 123] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2016] [Revised: 08/25/2016] [Accepted: 08/29/2016] [Indexed: 12/20/2022] Open
Abstract
Telomeres are tandem repeat DNA sequences present at the ends of each eukaryotic chromosome to stabilize the genome structure integrity. Telomere lengths progressively shorten with each cell division. Inflammation and oxidative stress, which are implicated as major mechanisms underlying cardiovascular diseases, increase the rate of telomere shortening and lead to cellular senescence. In clinical studies, cardiovascular risk factors such as smoking, obesity, sedentary lifestyle, and hypertension have been associated with short leukocyte telomere length. In addition, low telomerase activity and short leukocyte telomere length have been observed in atherosclerotic plaque and associated with plaque instability, thus stroke or acute myocardial infarction. The aging myocardium with telomere shortening and accumulation of senescent cells limits the tissue regenerative capacity, contributing to systolic or diastolic heart failure. In addition, patients with ion-channel defects might have genetic imbalance caused by oxidative stress-related accelerated telomere shortening, which may subsequently cause sudden cardiac death. Telomere length can serve as a marker for the biological status of previous cell divisions and DNA damage with inflammation and oxidative stress. It can be integrated into current risk prediction and stratification models for cardiovascular diseases and can be used in precise personalized treatments. In this review, we summarize the current understanding of telomeres and telomerase in the aging process and their association with cardiovascular diseases. In addition, we discuss therapeutic interventions targeting the telomere system in cardiovascular disease treatments.
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Affiliation(s)
- Jih-Kai Yeh
- Department of Cardiology, Chang Gung Memorial Hospital, 33305 Taoyuan, Taiwan.
| | - Chao-Yung Wang
- Department of Cardiology, Chang Gung Memorial Hospital, 33305 Taoyuan, Taiwan.
- Chang Gung University College of Medicine, 33302 Taoyuan, Taiwan.
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Kunadian V, Neely RDG, Sinclair H, Batty JA, Veerasamy M, Ford GA, Qiu W. Study to Improve Cardiovascular Outcomes in high-risk older patieNts (ICON1) with acute coronary syndrome: study design and protocol of a prospective observational study. BMJ Open 2016; 6:e012091. [PMID: 27554105 PMCID: PMC5013351 DOI: 10.1136/bmjopen-2016-012091] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
INTRODUCTION The ICON1 study (a study to Improve Cardiovascular Outcomes in high-risk older patieNts with acute coronary syndrome) is a prospective observational study of older patients (≥75 years old) with non-ST-elevation acute coronary syndrome managed by contemporary treatment (pharmacological and invasive). The aim of the study was to determine the predictors of poor cardiovascular outcomes in this age group and to generate a risk prediction tool. METHODS AND ANALYSIS Participants are recruited from 2 tertiary hospitals in the UK. Baseline evaluation includes frailty, comorbidity, cognition and quality-of-life measures, inflammatory status assessed by a biomarker panel, including microRNAs, senescence assessed by telomere length and telomerase activity, cardiovascular status assessed by arterial stiffness, endothelial function, carotid intima media thickness and left ventricular systolic and diastolic function, and coronary plaque assessed by virtual histology intravascular ultrasound and optical coherence tomography. The patients are followed-up at 30 days and at 1 year for primary outcome measures of death, myocardial infarction, stroke, unplanned revascularisation, bleeding and rehospitalisation. ETHICS AND DISSEMINATION The study has been approved by the regional ethics committee (REC 12/NE/016). Findings of the study will be presented in scientific sessions and will be published in peer-reviewed journals. TRIAL REGISTRATION NUMBER NCT01933581: Pre-results.
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Affiliation(s)
- Vijay Kunadian
- Institute of Cellular Medicine, Newcastle University,Newcastle upon Tyne, UK
- Cardiothoracic Centre, Freeman Hospital, Newcastle upon Tyne, UK
| | - R Dermot G Neely
- Department of Biochemistry, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK
| | - Hannah Sinclair
- Institute of Cellular Medicine, Newcastle University,Newcastle upon Tyne, UK
- Cardiothoracic Centre, Freeman Hospital, Newcastle upon Tyne, UK
| | - Jonathan A Batty
- Institute of Cellular Medicine, Newcastle University,Newcastle upon Tyne, UK
- Cardiothoracic Centre, Freeman Hospital, Newcastle upon Tyne, UK
| | - Murugapathy Veerasamy
- Institute of Cellular Medicine, Newcastle University,Newcastle upon Tyne, UK
- Cardiothoracic Centre, Freeman Hospital, Newcastle upon Tyne, UK
| | - Gary A Ford
- Institute for Ageing and Health, Newcastle University, Newcastle upon Tyne, UK
| | - Weiliang Qiu
- Channing Division of Network Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts, USA
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Angelovich TA, Shi MDY, Zhou J, Maisa A, Hearps AC, Jaworowski A. Ex vivo foam cell formation is enhanced in monocytes from older individuals by both extrinsic and intrinsic mechanisms. Exp Gerontol 2016; 80:17-26. [PMID: 27073169 DOI: 10.1016/j.exger.2016.04.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2015] [Revised: 02/24/2016] [Accepted: 04/06/2016] [Indexed: 12/20/2022]
Abstract
Aging is the strongest predictor of cardiovascular diseases such as atherosclerosis, which are the leading causes of morbidity and mortality in elderly men. Monocytes play an important role in atherosclerosis by differentiating into foam cells (lipid-laden macrophages) and producing atherogenic proinflammatory cytokines. Monocytes from the elderly have an inflammatory phenotype that may promote atherosclerotic plaque development; here we examined whether they are more atherogenic than those from younger individuals. Using an in vitro model of monocyte transmigration and foam cell formation, monocytes from older men (median age [range]: 75 [58-85] years, n=20) formed foam cells more readily than those of younger men (32 [23-46] years, n=20) (P<0.003) following transmigration across a TNF-activated endothelial monolayer. Compared to young men, monocytes from the elderly had impaired cholesterol efflux and lower expression of regulators of cholesterol transport and metabolism. Foam cell formation was enhanced by soluble factors in serum from older men, but did not correlate with plasma lipid levels. Of the three subsets, intermediate monocytes formed the most foam cells. Therefore, both cellular changes to monocytes and soluble plasma factors in older men primes monocytes for foam cell formation following transendothelial migration, which may contribute to enhanced atherosclerosis in this population.
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Affiliation(s)
- Thomas A Angelovich
- Centre for Biomedical Research, Burnet Institute, 85 Commercial Road, Melbourne, Victoria 3004, Australia; School of Applied Sciences, RMIT University, GPO Box 2476, Melbourne, Victoria 3001, Australia
| | - Margaret D Y Shi
- Centre for Biomedical Research, Burnet Institute, 85 Commercial Road, Melbourne, Victoria 3004, Australia
| | - Jingling Zhou
- Centre for Biomedical Research, Burnet Institute, 85 Commercial Road, Melbourne, Victoria 3004, Australia
| | - Anna Maisa
- Centre for Biomedical Research, Burnet Institute, 85 Commercial Road, Melbourne, Victoria 3004, Australia
| | - Anna C Hearps
- Centre for Biomedical Research, Burnet Institute, 85 Commercial Road, Melbourne, Victoria 3004, Australia; Department of Infectious Diseases, Monash University, Level 2 85 Commercial Road, Melbourne, Victoria 3004, Australia
| | - Anthony Jaworowski
- Centre for Biomedical Research, Burnet Institute, 85 Commercial Road, Melbourne, Victoria 3004, Australia; Department of Infectious Diseases, Monash University, Level 2 85 Commercial Road, Melbourne, Victoria 3004, Australia; Department of Immunology, Monash University, Level 6 89 Commercial Road, Melbourne, Victoria 3004, Australia.
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Uryga AK, Bennett MR. Ageing induced vascular smooth muscle cell senescence in atherosclerosis. J Physiol 2015; 594:2115-24. [PMID: 26174609 DOI: 10.1113/jp270923] [Citation(s) in RCA: 99] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2015] [Accepted: 07/08/2015] [Indexed: 12/16/2022] Open
Abstract
Atherosclerosis is a disease of ageing in that its incidence and prevalence increase with age. However, atherosclerosis is also associated with biological ageing, manifest by a number of typical hallmarks of ageing in the atherosclerotic plaque. Thus, accelerated biological ageing may be superimposed on the effects of chronological ageing in atherosclerosis. Tissue ageing is seen in all cells that comprise the plaque, but particularly in vascular smooth muscle cells (VSMCs). Hallmarks of ageing include evidence of cell senescence, DNA damage (including telomere attrition), mitochondrial dysfunction, a pro-inflammatory secretory phenotype, defects in proteostasis, epigenetic changes, deregulated nutrient sensing, and exhaustion of progenitor cells. In this model, initial damage to DNA (genomic, telomeric, mitochondrial and epigenetic changes) results in a number of cellular responses (cellular senescence, deregulated nutrient sensing and defects in proteostasis). Ultimately, ongoing damage and attempts at repair by continued proliferation overwhelm reparative capacity, causing loss of specialised cell functions, cell death and inflammation. This review summarises the evidence for accelerated biological ageing in atherosclerosis, the functional consequences of cell ageing on cells comprising the plaque, and the causal role that VSMC senescence plays in atherogenesis.
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Affiliation(s)
- Anna K Uryga
- Division of Cardiovascular Medicine, University of Cambridge, Addenbrooke's Centre for Clinical Investigation, Addenbrooke's Hospital, Box 110, Cambridge, CB2 0QQ, UK
| | - Martin R Bennett
- Division of Cardiovascular Medicine, University of Cambridge, Addenbrooke's Centre for Clinical Investigation, Addenbrooke's Hospital, Box 110, Cambridge, CB2 0QQ, UK
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Kataoka Y, Puri R, Nicholls SJ. Inflammation, plaque progression and vulnerability: evidence from intravascular ultrasound imaging. Cardiovasc Diagn Ther 2015; 5:280-9. [PMID: 26331112 DOI: 10.3978/j.issn.2223-3652.2015.05.06] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2015] [Accepted: 04/22/2015] [Indexed: 01/10/2023]
Abstract
Increasing evidence points to a critical role of inflammation in the development and propagation of atherosclerotic cardiovascular disease. Pathological studies in human and animal models have elucidated specific inflammatory mediators contributing to the progression and rupture of atherosclerotic plaque in the artery wall. These observations not only outline the importance of inflammation in atheroma progression but also the potential of anti-inflammatory therapeutic approaches to prevent and stabilize atherosclerotic disease. Intravascular ultrasonography enables direct atheroma visualization in vivo. Additionally, refinements in ultrasound technology permitting radiofrequency backscatter analysis enhance plaque characterization associated with disease instability. These imaging modalities will continue to provide opportunities for evaluating novel inflammatory mechanisms and anti-inflammatory therapies.
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Affiliation(s)
- Yu Kataoka
- 1 South Australian Health & Medical Research Institute, University of Adelaide, Adelaide, Australia ; 2 Cleveland Clinic Co-ordinating Center for Clinical Research (C5), Cleveland Clinic, Cleveland, Ohio, USA
| | - Rishi Puri
- 1 South Australian Health & Medical Research Institute, University of Adelaide, Adelaide, Australia ; 2 Cleveland Clinic Co-ordinating Center for Clinical Research (C5), Cleveland Clinic, Cleveland, Ohio, USA
| | - Stephen J Nicholls
- 1 South Australian Health & Medical Research Institute, University of Adelaide, Adelaide, Australia ; 2 Cleveland Clinic Co-ordinating Center for Clinical Research (C5), Cleveland Clinic, Cleveland, Ohio, USA
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46
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Foss CA, Bedja D, Mease RC, Wang H, Kass DA, Chatterjee S, Pomper MG. Molecular imaging of inflammation in the ApoE -/- mouse model of atherosclerosis with IodoDPA. Biochem Biophys Res Commun 2015; 461:70-5. [PMID: 25858322 DOI: 10.1016/j.bbrc.2015.03.171] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2015] [Accepted: 03/29/2015] [Indexed: 11/28/2022]
Abstract
BACKGROUND Atherosclerosis is a common and serious vascular disease predisposing individuals to myocardial infarction and stroke. Intravascular plaques, the pathologic lesions of atherosclerosis, are largely composed of cholesterol-laden luminal macrophage-rich infiltrates within a fibrous cap. The ability to detect those macrophages non-invasively within the aorta, carotid artery and other vessels would allow physicians to determine plaque burden, aiding management of patients with atherosclerosis. METHODS AND RESULTS We previously developed a low-molecular-weight imaging agent, [(125)I]iodo-DPA-713 (iodoDPA), which selectively targets macrophages. Here we use it to detect both intravascular macrophages and macrophage infiltrates within the myocardium in the ApoE -/- mouse model of atherosclerosis using single photon emission computed tomography (SPECT). SPECT data were confirmed by echocardiography, near-infrared fluorescence imaging and histology. SPECT images showed focal uptake of radiotracer at the aortic root in all ApoE -/- mice, while the age-matched controls were nearly devoid of radiotracer uptake. Focal radiotracer uptake along the descending aorta and within the myocardium was also observed in affected animals. CONCLUSIONS IodoDPA is a promising new imaging agent for atherosclerosis, with specificity for the macrophage component of the lesions involved.
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Affiliation(s)
- Catherine A Foss
- Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA.
| | - Djahida Bedja
- Department of Medicine, Division of Cardiology, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA; Faculty of Medicine and Health Sciences, Macquarie University, Sydney, Australia
| | - Ronnie C Mease
- Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
| | - Haofan Wang
- Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
| | - David A Kass
- Department of Medicine, Division of Cardiology, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
| | - Subroto Chatterjee
- Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
| | - Martin G Pomper
- Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
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Zhuang XD, Liao LZ, Guo Y, Li Y, Liao XX, Hu X, Du ZM. Rationale and design of RETAIN study: Rosuvastatin Effect on Telomere–telomerase system in Acute coronary syndrome patients undergoing percutaneous coronary Intervention. Int J Cardiol 2015; 184:388-390. [DOI: 10.1016/j.ijcard.2015.02.032] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/31/2014] [Accepted: 02/21/2015] [Indexed: 11/26/2022]
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Chen S, Lin J, Matsuguchi T, Blackburn E, Yeh F, Best LG, Devereux RB, Lee ET, Howard BV, Roman MJ, Zhao J. Short leukocyte telomere length predicts incidence and progression of carotid atherosclerosis in American Indians: the Strong Heart Family Study. Aging (Albany NY) 2015; 6:414-27. [PMID: 24902894 PMCID: PMC4069268 DOI: 10.18632/aging.100671] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
Abstract
Short leukocyte telomere length (LTL) has been associated with atherosclerosis in cross-sectional studies, but the prospective relationship between telomere shortening and risk of developing carotid atherosclerosis has not been well-established. This study examines whether LTL at baseline predicts incidence and progression of carotid atherosclerosis in American Indians in the Strong Heart Study. The analysis included 2,819 participants who were free of overt cardiovascular disease at baseline (2001-2003) and were followed through the end of 2006-2009 (average 5.5-yr follow-up). Discrete atherosclerotic plaque was defined as focal protrusion with an arterial wall thickness ≥50% the surrounding wall. Carotid progression was defined as having a higher plaque score at the end of study follow-up compared to baseline. Associations of LTL with incidence and progression of carotid plaque were examined using Cox proportional hazard regression, adjusting for standard coronary risk factors. Compared to participants in the highest LTL tertile, those in the lowest tertile had significantly elevated risk for both incident plaque (HR, 1.49; 95% CI, 1.09–2.03) and plaque progression (HR, 1.61; 95% CI, 1.26–2.07). Our results provide initial evidence for a potential prognostic utility of LTL in risk prediction for atherosclerosis.
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Affiliation(s)
- Shufeng Chen
- Department of Epidemiology, School of Public Health and Tropical Medicine, Tulane University, New Orleans, LA 70112, USA
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Hohman TJ, Koran MEI, Thornton-Wells TA. Genetic modification of the relationship between phosphorylated tau and neurodegeneration. Alzheimers Dement 2014; 10:637-645.e1. [PMID: 24656848 PMCID: PMC4169762 DOI: 10.1016/j.jalz.2013.12.022] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2013] [Revised: 12/04/2013] [Accepted: 12/09/2013] [Indexed: 01/18/2023]
Abstract
BACKGROUND A subset of individuals present at autopsy with the pathologic features of Alzheimer's disease having never manifest the clinical symptoms. We sought to identify genetic factors that modify the relationship between phosphorylated tau (PTau) and dilation of the lateral inferior ventricles. METHODS We used data from 700 subjects enrolled in the Alzheimer's Disease Neuroimaging Initiative (ADNI). A genome-wide association study approach was used to identify PTau × single nucleotide polymorphism (SNP) interactions. Variance explained by these interactions was quantified using hierarchical linear regression. RESULTS Five SNP × PTau interactions passed a Bonferroni correction, one of which (rs4728029, POT1, 2.6% of variance) was consistent across ADNI-1 and ADNI-2/GO subjects. This interaction also showed a trend-level association with memory performance and levels of interleukin-6 receptor. CONCLUSIONS Our results suggest that rs4728029 modifies the relationship between PTau and both ventricular dilation and cognition, perhaps through an altered neuroinflammatory response.
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Affiliation(s)
- Timothy J Hohman
- The Center for Human Genetics Research, Department of Molecular Physiology & Biophysics, Vanderbilt University School of Medicine, Nashville, TN, USA.
| | - Mary Ellen I Koran
- The Center for Human Genetics Research, Department of Molecular Physiology & Biophysics, Vanderbilt University School of Medicine, Nashville, TN, USA
| | - Tricia A Thornton-Wells
- The Center for Human Genetics Research, Department of Molecular Physiology & Biophysics, Vanderbilt University School of Medicine, Nashville, TN, USA
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50
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Savolainen K, Eriksson JG, Kananen L, Kajantie E, Pesonen AK, Heinonen K, Räikkönen K. Associations between early life stress, self-reported traumatic experiences across the lifespan and leukocyte telomere length in elderly adults. Biol Psychol 2014; 97:35-42. [PMID: 24530884 DOI: 10.1016/j.biopsycho.2014.02.002] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2013] [Revised: 02/04/2014] [Accepted: 02/04/2014] [Indexed: 11/26/2022]
Abstract
Early life stress (ELS) poses a risk for mental disorders and aging-related diseases. Accelerated biological aging, reflected in shorter leukocyte telomere length (LTL), may underlie these risks. We examined whether objectively recorded ELS and retrospectively self-reported traumatic experiences across the lifespan are associated with LTL in later adulthood. Of 1486 participants, 215 had been exposed to ELS, namely to temporary separation from both parents in childhood. Participants self-reported emotionally or physically traumatic experiences across the lifespan at a mean age of 63.2 years. LTL was measured using a quantitative PCR method at a mean age of 61.5 years. Separation or self-reported traumatic experiences were not associated with LTL. However, separated participants who self-reported traumatic experiences had shorter LTL. Our results suggest that while ELS or self-reported traumatic experiences are not per se associated with LTL measured decades later, ELS may in combination with self-reported traumatic events be associated with accelerated biological aging.
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Affiliation(s)
- Katri Savolainen
- Institute of Behavioural Sciences, University of Helsinki, Finland.
| | - Johan G Eriksson
- Diabetes Prevention Unit, Department of Chronic Disease Prevention, National Institution for Health and Welfare, Helsinki, Finland; Folkhälsan Research Centre, Helsinki, Finland; Unit of General Practice, Helsinki University Central Hospital, Finland; Vaasa Central Hospital, Vaasa, Finland; Department of General Practice and Primary Health Care, University of Helsinki, Finland
| | - Laura Kananen
- Research Programs Unit, Molecular Neurology, Biomedicum-Helsinki, University of Helsinki, Finland; Department of Medical Genetics, Haartman Institute, Faculty of Medicine, University of Helsinki, Finland
| | - Eero Kajantie
- Diabetes Prevention Unit, Department of Chronic Disease Prevention, National Institution for Health and Welfare, Helsinki, Finland; Hospital for Children and Adolescents, Helsinki University Central Hospital, Finland
| | | | - Kati Heinonen
- Institute of Behavioural Sciences, University of Helsinki, Finland
| | - Katri Räikkönen
- Institute of Behavioural Sciences, University of Helsinki, Finland
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