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Lin Q, Zheng Z, Ni H, Xu Y, Nie H. Cellular senescence-Related genes define the immune microenvironment and molecular characteristics in severe asthma patients. Gene 2024; 919:148502. [PMID: 38670389 DOI: 10.1016/j.gene.2024.148502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2023] [Revised: 04/16/2024] [Accepted: 04/23/2024] [Indexed: 04/28/2024]
Abstract
Recent studies have shown that cellular senescence is involved in the pathogenesis of severe asthma (SA). The objective of this study was to investigate the role of cellular senescence-related genes (CSGs) in the pathogenesis of SA. Here, 54 differentially expressed CSGs were identified in SA patients compared to healthy control individuals. Among the 54 differentially expressed CSGs, 3 CSGs (ETS2, ETS1 and AURKA) were screened using the LASSO regression analysis and logistic regression analysis to establish the CSG-based prediction model to predict severe asthma. Moreover, we found that the protein expression levels of ETS2, ETS1 and AURKA were increased in the severe asthma mouse model. Then, two distinct senescence subtypes of SA with distinct immune microenvironments and molecular biological characteristics were identified. Cluster 1 was characterized by increased infiltration of immature dendritic cells, regulatory T cells, and other cells. Cluster 2 was characterized by increased infiltration levels of eosinophils, neutrophils, and other cells. The molecular biological characteristics of Cluster 1 included aerobic respiration and oxidative phosphorylation, whereas the molecular biological characteristics of Cluster 2 included activation of the immune response and immune receptor activity. Then, we established an Random Forest model to predict the senescence subtypes of SA to guide treatment. Finally, potential drugs were searched for each senescence subgroup of SA patients via the Connectivity Map database. A peroxisome proliferator-activated receptor agonist may be a potential therapeutic drug for patients in Cluster 1, whereas a tachykinin antagonist may be a potential therapeutic drug for patients in Cluster 2. In summary, CSGs are likely involved in the pathogenesis of SA, which may lead to new therapeutic options for SA patients.
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Affiliation(s)
- Qibin Lin
- Department of Respiratory and Critical Care Medicine, Renmin Hospital of Wuhan University, Wuhan 430060, Hubei, China
| | - Zhishui Zheng
- Department of Respiratory and Critical Care Medicine, Renmin Hospital of Wuhan University, Wuhan 430060, Hubei, China
| | - Haiyang Ni
- Department of Respiratory and Critical Care Medicine, Renmin Hospital of Wuhan University, Wuhan 430060, Hubei, China
| | - Yaqing Xu
- Department of Geriatric Medicine, Renmin Hospital of Wuhan University, Wuhan 430060, Hubei, China.
| | - Hanxiang Nie
- Department of Respiratory and Critical Care Medicine, Renmin Hospital of Wuhan University, Wuhan 430060, Hubei, China.
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Xue J, Liu Z, Liao Y, Zhang X, Liu Y, Mo L, Dong R, Li Q, Sun X, Xie J, Yang P. Undersized telomeres in regulatory T cells link to the pathogenesis of allergic rhinitis. iScience 2024; 27:108615. [PMID: 38205251 PMCID: PMC10777067 DOI: 10.1016/j.isci.2023.108615] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 10/23/2023] [Accepted: 11/29/2023] [Indexed: 01/12/2024] Open
Abstract
Telomeres are an important biomarker in the cell destiny. The relationship between telomeres and regulatory T cells (Tregs) has not yet been investigated. The objective of this study is to evaluate the link between Tregs' telomere length and allergic rhinitis (AR)'s pathogenesis. Here, we report that low telomerase activity and high endoplasmic reticulum stress status were observed in Tregs from AR patients, as shown in the results. Immune regulatory molecules levels were correlated with the length of Tregs' telomeres. The immune-suppressive functions of Tregs were associated with the telomere length/Telomerase reverse transcriptase/Telomerase protein component 1 status in Tregs. The levels of telomere length/telomerase in airway Tregs were reduced by sensitization. Endoplasmic reticulum stress signaling pathway of proline-rich receptor-like protein kinase-eukaryotic translation initiation factor 2A (eIF2a) was associated with the regulation of telomerase. Inhibiting eIF2a had an effect on upregulating telomerase activity in Tregs and mitigating experimental AR.
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Affiliation(s)
- Jinmei Xue
- Department of Otolaryngology, Head & Neck Surgery, Second Hospital, Shanxi Medical University, Taiyuan, China
| | - Zhizhen Liu
- Department of Biochemistry and Molecular Biology, Shanxi Key Laboratory of Birth Defect and Cell Regeneration, Key Laboratory of Coal Environmental Pathogenicity and Prevention, Ministry of Education of China, Shanxi Medical University, Taiyuan, China
| | - Yun Liao
- Shenzhen Clinical School of Medicine, Guangzhou University of Chinese Medicine, Shenzhen, China
- Institute of Allergy & Immunology of Shenzhen University, State Key Laboratory of Respiratory Diseases Allergy Division at Shenzhen University, Shenzhen, China
| | - Xiwen Zhang
- Shenzhen Clinical School of Medicine, Guangzhou University of Chinese Medicine, Shenzhen, China
- Institute of Allergy & Immunology of Shenzhen University, State Key Laboratory of Respiratory Diseases Allergy Division at Shenzhen University, Shenzhen, China
| | - Yu Liu
- Department of General Practice Medicine, Third Affiliated Hospital, Shenzhen University, Shenzhen, China
| | - Lihua Mo
- Institute of Allergy & Immunology of Shenzhen University, State Key Laboratory of Respiratory Diseases Allergy Division at Shenzhen University, Shenzhen, China
- Department of General Practice Medicine, Third Affiliated Hospital, Shenzhen University, Shenzhen, China
| | - Rui Dong
- Department of Otolaryngology, Head & Neck Surgery, Second Hospital, Shanxi Medical University, Taiyuan, China
| | - Qiang Li
- Department of Otolaryngology, Head & Neck Surgery, Second Hospital, Shanxi Medical University, Taiyuan, China
| | - Xizhuo Sun
- Department of General Practice Medicine, Third Affiliated Hospital, Shenzhen University, Shenzhen, China
| | - Jun Xie
- Department of Biochemistry and Molecular Biology, Shanxi Key Laboratory of Birth Defect and Cell Regeneration, Key Laboratory of Coal Environmental Pathogenicity and Prevention, Ministry of Education of China, Shanxi Medical University, Taiyuan, China
| | - Pingchang Yang
- Institute of Allergy & Immunology of Shenzhen University, State Key Laboratory of Respiratory Diseases Allergy Division at Shenzhen University, Shenzhen, China
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Role of cellular senescence in inflammatory lung diseases. Cytokine Growth Factor Rev 2023; 70:26-40. [PMID: 36797117 DOI: 10.1016/j.cytogfr.2023.02.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Revised: 02/05/2023] [Accepted: 02/09/2023] [Indexed: 02/16/2023]
Abstract
Cellular senescence, a characteristic sign of aging, classically refers to permanent cell proliferation arrest and is a vital contributor to the pathogenesis of cancer and age-related illnesses. A lot of imperative scientific research has shown that senescent cell aggregation and the release of senescence-associated secretory phenotype (SASP) components can cause lung inflammatory diseases as well. In this study, the most recent scientific progress on cellular senescence and phenotypes was reviewed, including their impact on lung inflammation and the contributions of these findings to understanding the underlying mechanisms and clinical relevance of cell and developmental biology. Within a dozen pro-senescent stimuli, the irreparable DNA damage, oxidative stress, and telomere erosion are all crucial in the long-term accumulation of senescent cells, resulting in sustained inflammatory stress activation in the respiratory system. An emerging role for cellular senescence in inflammatory lung diseases was proposed in this review, followed by the identification of the main ambiguities, thus further understanding this event and the potential to control cellular senescence and pro-inflammatory response activation. In addition, novel therapeutic strategies for the modulation of cellular senescence that might help to attenuate inflammatory lung conditions and improve disease outcomes were also presented in this research.
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Liu M, Luo P, Liu L, Wei X, Bai X, Li J, Wu L, Luo M. Immune-mediated inflammatory diseases and leukocyte telomere length: A Mendelian randomization study. Front Genet 2023; 14:1129247. [PMID: 37139230 PMCID: PMC10150136 DOI: 10.3389/fgene.2023.1129247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Accepted: 03/20/2023] [Indexed: 05/05/2023] Open
Abstract
Objective: To elucidate the potential causality of leukocyte telomere length (LTL) with immune-mediated inflammatory diseases (IMIDs), we conducted a Mendelian randomization (MR) study. Methods: The genetically predicted causation between LTL and IMIDs was evaluated using a two-sample MR method. We analyzed 16 major IMIDs, which included systemic lupus erythematosus (SLE), inflammatory bowel disease (IBD), ulcerative colitis (UC), Crohn's disease (CD), ankylosing spondylitis (AS), sicca syndrome (SS), rheumatoid arthritis (RA), type 1 diabetes (T1D), primary sclerosing cholangitis (PSC), idiopathic pulmonary fibrosis (IPF), atopic dermatitis (AD), sarcoidosis, hypothyroidism, hyperthyroidism, psoriasis, and childhood asthma. The random-effects inverse-variance weighted (IVW) method was performed as the main analytical approach in MR. Various sensitivity analyses, including MR-Egger, MR robust adjusted profile score (MR-RAPS), weighted median, MR pleiotropy residual sum and outlier (MR-PRESSO) methods, weighted mode, radial plot, and radial regression, were used to guarantee the robustness of the results and detect horizontal pleiotropy. Cochran's Q value was calculated to check for heterogeneity, and the MR Steiger approach was used to test the causal direction. Results: The MR results indicated significant inverse associations of LTL with risks of psoriasis (OR: 0.77, 95% CI: 0.66-0.89, and p = 3.66 × 10-4), SS (OR: 0.75, CI: 0.58-0.98, and p = 0.03), RA (OR: 0.77, 95% CI: 0.68-0.88, and p = 9.85 × 10-5), hypothyroidism (OR: 0.84, 95% CI: 0.78-0.91, and p = 7,08 × 10-6), hyperthyroidism (OR: 0.60, 95% CI: 0.44-0.83, and p = 1.90 × 10-3), sarcoidosis (OR: 0.67, 95% CI: 0.54-0.83, and p = 2.60 × 10-4), and IPF (OR: 0.41, 95% CI: 0.29-0.58, and p = 4.11 × 10-7) in the FinnGen study. We observed that longer LTL was associated with an increased risk of AS susceptibility (OR: 1.51, 95% CI: 1.18-1.94, and p = 9.66 × 10-4). The results of the IVW method showed no causal relationship between TL and SLE (OR: 0.92, 95% CI: 0.62-1.38, and p = 0.69) in the FinnGen study; however, a significantly positive correlation was shown between LTL and SLE in another larger GWAS (OR: 1.87, 95% CI: 1.37-2.54, and p = 8.01 × 10-5). Conclusion: Our findings reveal that abnormal LTL has the potential to increase the risk of IMIDs. Therefore, it could be treated as a predictor and may provide new potential treatment targets for IMIDs. However, the change of LTL may not be the direct cause of IMIDs. Further studies should aim at the pathogenic mechanism or potential protective effects of LTL in IMIDs.
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Bourassa KJ, Moffitt TE, Ambler A, Hariri AR, Harrington H, Houts RM, Ireland D, Knodt A, Poulton R, Ramrakha S, Caspi A. Association of Treatable Health Conditions During Adolescence With Accelerated Aging at Midlife. JAMA Pediatr 2022; 176:392-399. [PMID: 35188538 PMCID: PMC8861897 DOI: 10.1001/jamapediatrics.2021.6417] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
IMPORTANCE Biological aging is a distinct construct from health; however, people who age quickly are more likely to experience poor health. Identifying pediatric health conditions associated with accelerated aging could help develop treatment approaches to slow midlife aging and prevent poor health in later life. OBJECTIVE To examine the association between 4 treatable health conditions in adolescence and accelerated aging at midlife. DESIGN, SETTING, AND PARTICIPANTS This cohort study analyzed data from participants in the Dunedin Study, a longitudinal investigation of health and behavior among a birth cohort born between April 1, 1972, and March 31, 1973, in Dunedin, New Zealand, and followed up until age 45 years. Participants underwent an assessment at age 45 years and had data for at least 1 adolescent health condition (asthma, smoking, obesity, and psychological disorders) and outcome measure (pace of aging, gait speed, brain age, and facial age). Data analysis was performed from February 11 to September 27, 2021. EXPOSURES Asthma, cigarette smoking, obesity, and psychological disorders were assessed at age 11, 13, and 15 years. MAIN OUTCOMES AND MEASURES The outcome was a midlife aging factor composite score comprising 4 measures of biological aging: pace of aging, gait speed, brain age (specifically, BrainAGE score), and facial age. RESULTS A total of 910 participants (459 men [50.4%]) met the inclusion criteria, including an assessment at age 45 years. Participants who had smoked daily (0.61 [95% CI, 0.43-0.79] SD units), had obesity (0.82 [95% CI, 0.59-1.06] SD units), or had a psychological disorder diagnosis (0.43 [95% CI, 0.29-0.56] SD units) during adolescence were biologically older at midlife compared with participants without these conditions. Participants with asthma were not biologically older at midlife (0.02 [95% CI, -0.14 to 0.19] SD units) compared with those without asthma. These results remained unchanged after adjusting for childhood risk factors such as poor health, socioeconomic disadvantage, and adverse experiences. CONCLUSIONS AND RELEVANCE This study found that adolescent smoking, obesity, and psychological disorder diagnoses were associated with older biological age at midlife. These health conditions could be treated during adolescence to reduce the risk of accelerated biological aging later in life.
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Affiliation(s)
- Kyle J. Bourassa
- Center for the Study of Aging and Human Development, Duke University Medical Center, Durham, North Carolina,Geriatric Research, Education, and Clinical Center, Veterans Affairs Durham Healthcare System, Durham, North Carolina,Department of Psychology and Neuroscience, Duke University, Durham, North Carolina
| | - Terrie E. Moffitt
- Center for the Study of Aging and Human Development, Duke University Medical Center, Durham, North Carolina,Department of Psychology and Neuroscience, Duke University, Durham, North Carolina,Institute of Psychiatry, King’s College London, London, United Kingdom,Department of Psychiatry and Behavioral Sciences, Duke University School of Medicine, Durham, North Carolina,Center for Genomic and Computational Biology, Duke University, Durham, North Carolina
| | - Antony Ambler
- Institute of Psychiatry, King’s College London, London, United Kingdom
| | - Ahmad R. Hariri
- Department of Psychology and Neuroscience, Duke University, Durham, North Carolina
| | - HonaLee Harrington
- Department of Psychology and Neuroscience, Duke University, Durham, North Carolina
| | - Renate M. Houts
- Department of Psychology and Neuroscience, Duke University, Durham, North Carolina
| | - David Ireland
- Department of Psychology, University of Otago, Otago, New Zealand
| | - Annchen Knodt
- Department of Psychology and Neuroscience, Duke University, Durham, North Carolina
| | - Richie Poulton
- Department of Psychology, University of Otago, Otago, New Zealand
| | - Sandhya Ramrakha
- Department of Psychology, University of Otago, Otago, New Zealand
| | - Avshalom Caspi
- Center for the Study of Aging and Human Development, Duke University Medical Center, Durham, North Carolina,Department of Psychology and Neuroscience, Duke University, Durham, North Carolina,Institute of Psychiatry, King’s College London, London, United Kingdom,Department of Psychiatry and Behavioral Sciences, Duke University School of Medicine, Durham, North Carolina,Center for Genomic and Computational Biology, Duke University, Durham, North Carolina
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Schneider CV, Schneider KM, Teumer A, Rudolph KL, Hartmann D, Rader DJ, Strnad P. Association of Telomere Length With Risk of Disease and Mortality. JAMA Intern Med 2022; 182:291-300. [PMID: 35040871 PMCID: PMC8767489 DOI: 10.1001/jamainternmed.2021.7804] [Citation(s) in RCA: 67] [Impact Index Per Article: 33.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
IMPORTANCE Telomeres protect DNA from damage. Because they shorten with each mitotic cycle, leukocyte telomere length (LTL) serves as a mitotic clock. Reduced LTL has been associated with multiple human disorders. OBJECTIVE To determine the association between LTL and overall as well as disease-specific mortality and morbidity. DESIGN, SETTING, AND PARTICIPANTS This multicenter, community-based cohort study conducted from March 2006 to December 2010 included longitudinal follow-up (mean [SD], 12 [2] years) for 472 432 English participants from the United Kingdom Biobank (UK Biobank) and analyzed morbidity and mortality. The data were analyzed in 2021. MAIN OUTCOMES AND MEASURES Hazard ratios (HRs) and odds ratios for mortality and morbidity associated with a standard deviation change in LTL, adjusted for age, sex, body mass index (calculated as weight in kilograms divided by height in meters squared), and ethnicity. RESULTS This study included a total of 472 432 English participants, of whom 54% were women (mean age, 57 years). Reduced LTL was associated with increased overall (HR, 1.08; 95% CI, 1.07-1.09), cardiovascular (HR, 1.09; 95% CI, 1.06-1.12), respiratory (HR, 1.40; 95% CI, 1.34-1.45), digestive (HR, 1.26; 95% CI, 1.19-1.33), musculoskeletal (HR, 1.51; 95% CI, 1.35-1.92), and COVID-19 (HR, 1.15; 95% CI, 1.07-1.23) mortality, but not cancer-related mortality. A total of 214 disorders were significantly overrepresented and 37 underrepresented in participants with shorter LTL. Respiratory (11%), digestive/liver-related (14%), circulatory (18%), and musculoskeletal conditions (6%), together with infections (5%), accounted for most positive associations, whereas (benign) neoplasms and endocrinologic/metabolic disorders were the most underrepresented entities. Malignant tumors, esophageal cancer, and lymphoid and myeloid leukemia were significantly more common in participants with shorter LTL, whereas brain cancer and melanoma were less prevalent. While smoking and alcohol consumption were associated with shorter LTL, additional adjustment for both factors, as well as cognitive function/major comorbid conditions, did not significantly alter the results. CONCLUSIONS AND RELEVANCE This cohort study found that shorter LTL was associated with a small risk increase of overall mortality, but a higher risk of mortality was associated with specific organs and diseases.
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Affiliation(s)
- Carolin V Schneider
- The Institute for Translational Medicine and Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia
| | - Kai Markus Schneider
- Perelman School of Medicine, Department of Microbiology, University of Pennsylvania, Philadelphia
| | - Alexander Teumer
- Institute for Community Medicine, University Medicine Greifswald, Greifswald, Germany.,German Centre for Cardiovascular Research (DZHK), partner site Greifswald, Greifswald, Germany.,Department of Population Medicine and Lifestyle Diseases Prevention, Medical University of Bialystok, Bialystok, Poland
| | | | - Daniel Hartmann
- Department of Surgery, School of Medicine, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
| | - Daniel J Rader
- The Institute for Translational Medicine and Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia
| | - Pavel Strnad
- Medical Clinic III, Gastroenterology, Metabolic diseases and Intensive Care, University Hospital RWTH Aachen, Aachen, Germany
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Role of Sex Hormones at Different Physiobiological Conditions and Therapeutic Potential in MBD2 Mediated Severe Asthma. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:7097797. [PMID: 35096261 PMCID: PMC8799366 DOI: 10.1155/2021/7097797] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/11/2021] [Accepted: 11/29/2021] [Indexed: 12/16/2022]
Abstract
Sex hormone has become a “hot topic” to evaluate the hormonal therapeutic potential in severe asthma. Th17 cell is one of the main influencing factors involved in the pathogenesis of severe asthma, hence also called as kernel of severe asthma, and Th17 subtype of non-T2 asthma is less responsive (resistance) to inhaled corticosteroid (ICS), so severe in nature. Methyl-CpG binding domain protein 2 (MBD2) is overexpressed and regulates the Th17 differentiation, showing the possibility of therapeutic target in treating Th17 mediated severe asthma. Sex hormone fluctuates at the different physiobiological conditions of the human body and affects the asthma pathobiology showing its role in asthma prevalence, severity, remission, and therapy. This review briefly overviews the sex hormones, their influence in asthma at the different physiobiological conditions of human body, and MBD2 severe asthma connection with the possible therapeutic potential of sex steroids in MBD2 mediated Th17 predominant severe asthma. Male sex hormone tends to show a beneficial effect and possibly downregulates the expression of Th17 cells via regulating MBD2 through a mechanism distinct from corticosteroid treatment and guides us towards discovery of new therapeutic agent, reduces the asthma-related complications, and promotes long-term survival by lowering the risk of therapy-resistant issues of old age severe asthma.
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Schetters STT, Schuijs MJ. Pulmonary Eosinophils at the Center of the Allergic Space-Time Continuum. Front Immunol 2021; 12:772004. [PMID: 34868033 PMCID: PMC8634472 DOI: 10.3389/fimmu.2021.772004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Accepted: 10/27/2021] [Indexed: 01/01/2023] Open
Abstract
Eosinophils are typically a minority population of circulating granulocytes being released from the bone-marrow as terminally differentiated cells. Besides their function in the defense against parasites and in promoting allergic airway inflammation, regulatory functions have now been attributed to eosinophils in various organs. Although eosinophils are involved in the inflammatory response to allergens, it remains unclear whether they are drivers of the asthma pathology or merely recruited effector cells. Recent findings highlight the homeostatic and pro-resolving capacity of eosinophils and raise the question at what point in time their function is regulated. Similarly, eosinophils from different physical locations display phenotypic and functional diversity. However, it remains unclear whether eosinophil plasticity remains as they develop and travel from the bone marrow to the tissue, in homeostasis or during inflammation. In the tissue, eosinophils of different ages and origin along the inflammatory trajectory may exhibit functional diversity as circumstances change. Herein, we outline the inflammatory time line of allergic airway inflammation from acute, late, adaptive to chronic processes. We summarize the function of the eosinophils in regards to their resident localization and time of recruitment to the lung, in all stages of the inflammatory response. In all, we argue that immunological differences in eosinophils are a function of time and space as the allergic inflammatory response is initiated and resolved.
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Affiliation(s)
- Sjoerd T T Schetters
- Department of Internal Medicine and Pediatrics, Ghent University, Ghent, Belgium.,Laboratory of Immunoregulation and Mucosal Immunology, VIB-UGent Center for Inflammation Research, Ghent, Belgium
| | - Martijn J Schuijs
- Department of Internal Medicine and Pediatrics, Ghent University, Ghent, Belgium.,Laboratory of Immunoregulation and Mucosal Immunology, VIB-UGent Center for Inflammation Research, Ghent, Belgium.,Cancer Research Institute Ghent, Ghent, Belgium
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Ajaykumar A, Wong GC, Yindom LM, McHugh G, Dauya E, Majonga E, Mujuru H, Ferrand RA, Rowland-Jones SL, Côté HCF. Shorter Granulocyte Telomeres Among Children and Adolescents With Perinatally Acquired Human Immunodeficiency Virus Infection and Chronic Lung Disease in Zimbabwe. Clin Infect Dis 2021; 73:e2043-e2051. [PMID: 32766884 PMCID: PMC8492138 DOI: 10.1093/cid/ciaa1134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Accepted: 08/06/2020] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND Chronic lung disease (CLD) has been reported among African children with perinatally acquired human immunodeficiency virus (HIV) infection (C-PHIV), despite combination antiretroviral therapy (cART). In adults, shorter telomere length (TL) has been reported in association with both CLD and HIV. As little is known in children, our objective was to compare TL in HIV-positive (cART-naive or -treated) and HIV-negative children with and without CLD. METHODS Participants included Zimbabwean C-PHIV, aged 6-16, who were either newly diagnosed and cART-naive, or on cART for >6 months, and HIV-negative controls of similar age and sex. Packed blood cell (granulocyte) TLs from 621 children were compared cross-sectionally between groups. For a subset of newly diagnosed C-PHIV, changes in TL following cART initiation were evaluated. RESULTS C-PHIV had shorter granulocyte TL compared with uninfected peers, regardless of cART. Among 255 C-PHIV without CLD, TL was shorter in cART-naive participants. In multivariable analyses adjusted for age, sex, CLD, and HIV/cART status, shorter TL was independently associated with older age, being HIV positive, and having reduced forced vital capacity (FVC). Last, cART initiation increased TL. CONCLUSIONS In this cohort, C-PHIV and those with reduced FVC have shorter granulocyte TL, possibly the result of increased immune activation and cellular turnover due to longstanding HIV infection with delayed cART initiation.
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Affiliation(s)
- Abhinav Ajaykumar
- Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, British Columbia, Canada
- Centre for Blood Research, University of British Columbia, Vancouver, British Columbia, Canada
| | - Glenn C Wong
- Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom
| | - Louis-Marie Yindom
- Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom
| | - Grace McHugh
- Biomedical Research and Training Institute, Harare, Zimbabwe
| | - Ethel Dauya
- Biomedical Research and Training Institute, Harare, Zimbabwe
| | - Edith Majonga
- Biomedical Research and Training Institute, Harare, Zimbabwe
- Faculty of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, London, United Kingdom
| | | | - Rashida A Ferrand
- Biomedical Research and Training Institute, Harare, Zimbabwe
- Faculty of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, London, United Kingdom
| | | | - Hélène C F Côté
- Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, British Columbia, Canada
- Centre for Blood Research, University of British Columbia, Vancouver, British Columbia, Canada
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Chang-Chien J, Huang JL, Tsai HJ, Wang SL, Kuo ML, Yao TC. Particulate matter causes telomere shortening and increase in cellular senescence markers in human lung epithelial cells. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 222:112484. [PMID: 34237641 DOI: 10.1016/j.ecoenv.2021.112484] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Revised: 06/29/2021] [Accepted: 06/30/2021] [Indexed: 06/13/2023]
Abstract
Exposure to particulate matter (PM) has been associated with DNA damage, but the relationships between PM, telomere length and cellular senescence remain unclear. This study aimed to investigate the effects and potential mechanisms of PM on telomere length and cellular senescence in human lung epithelial cells. Human lung epithelial A549 cells were exposed to PM for 24 h. Cell viability and cytotoxicity were measured by the WST-1 assay and the lactate dehydrogenase release, respectively. Cellular uptake of PM was observed using transmission electron microscopy. Telomere length was measured using qPCR and expressed as T/S ratio. Cell cycle progression was analyzed by flow cytometry. Expression of human telomerase reverse transcriptase (hTERT) and cell cycle regulators was measured using mRNA by qPCR and protein levels by Western blot. Cellular senescence was determined by the expression of senescence-associated β-galactosidase (SA-β-Gal) with fluorescent microscopy and flow cytometry. Exposed to PM at the concentration of 200 μg/ml decreased cell viability and increased LDH levels in culture medium. Remarkably increased uptake of PM, shortening of telomere length, induction of G0/G1 phase arrest, and increased expression of senescence hallmarks were observed after exposure to PM in A549 cells. PM exposure induced upregulation of p21 and downregulation of proliferating cell nuclear antigen (PCNA) and hTERT expression, but no significant change in p53 expression, in A549 cells. Overall, exposure to PM may downregulate hTERT and PCNA through p53-independent induction of p21 expression, leading to telomere shortening, G0/G1 arrest and the onset of cellular senescence in human lung epithelial cells.
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Affiliation(s)
- Ju Chang-Chien
- Division of Allergy, Asthma, and Rheumatology, Department of Pediatrics, Chang Gung Memorial Hospital, 5 Fu-Hsin Street, Kweishan, Taoyuan 33305, Taiwan
| | - Jing-Long Huang
- School of Medicine, Chang Gung University College of Medicine, Taoyuan, Taiwan; Department of Pediatrics, New Taipei Municipal TuCheng Hospital, New Taipei, Taiwan; Community Medicine Research Center, Chang Gung Memorial Hospital at Keelung, Keelung, Taiwan
| | - Hui-Ju Tsai
- Institute of Population Health Sciences, National Health Research Institutes, Zhunan, Taiwan
| | - Shih-Ling Wang
- Division of Allergy, Asthma, and Rheumatology, Department of Pediatrics, Chang Gung Memorial Hospital, 5 Fu-Hsin Street, Kweishan, Taoyuan 33305, Taiwan
| | - Ming-Ling Kuo
- Division of Allergy, Asthma, and Rheumatology, Department of Pediatrics, Chang Gung Memorial Hospital, 5 Fu-Hsin Street, Kweishan, Taoyuan 33305, Taiwan; Department of Pediatrics, New Taipei Municipal TuCheng Hospital, New Taipei, Taiwan; Department of Microbiology and Immunology, Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, 259 Wenhua 1st Road, Kweishan, Taoyuan 33302, Taiwan.
| | - Tsung-Chieh Yao
- Division of Allergy, Asthma, and Rheumatology, Department of Pediatrics, Chang Gung Memorial Hospital, 5 Fu-Hsin Street, Kweishan, Taoyuan 33305, Taiwan; School of Medicine, Chang Gung University College of Medicine, Taoyuan, Taiwan; Community Medicine Research Center, Chang Gung Memorial Hospital at Keelung, Keelung, Taiwan.
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11
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Pacitti D, Scotton CJ, Kumar V, Khan H, Wark PAB, Torregrossa R, Hansbro PM, Whiteman M. Gasping for Sulfide: A Critical Appraisal of Hydrogen Sulfide in Lung Disease and Accelerated Aging. Antioxid Redox Signal 2021; 35:551-579. [PMID: 33736455 DOI: 10.1089/ars.2021.0039] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Hydrogen sulfide (H2S) is a gaseous signaling molecule involved in a plethora of physiological and pathological processes. It is primarily synthesized by cystathionine-β-synthase, cystathionine-γ-lyase, and 3-mercaptopyruvate sulfurtransferase as a metabolite of the transsulfuration pathway. H2S has been shown to exert beneficial roles in lung disease acting as an anti-inflammatory and antiviral and to ameliorate cell metabolism and protect from oxidative stress. H2S interacts with transcription factors, ion channels, and a multitude of proteins via post-translational modifications through S-persulfidation ("sulfhydration"). Perturbation of endogenous H2S synthesis and/or levels have been implicated in the development of accelerated lung aging and diseases, including asthma, chronic obstructive pulmonary disease, and fibrosis. Furthermore, evidence indicates that persulfidation is decreased with aging. Here, we review the use of H2S as a biomarker of lung pathologies and discuss the potential of using H2S-generating molecules and synthesis inhibitors to treat respiratory diseases. Furthermore, we provide a critical appraisal of methods of detection used to quantify H2S concentration in biological samples and discuss the challenges of characterizing physiological and pathological levels. Considerations and caveats of using H2S delivery molecules, the choice of generating molecules, and concentrations are also reviewed. Antioxid. Redox Signal. 35, 551-579.
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Affiliation(s)
- Dario Pacitti
- Institute of Biomedical and Clinical Sciences, University of Exeter Medical School, University of Exeter, Exeter, United Kingdom
| | - Chris J Scotton
- Institute of Biomedical and Clinical Sciences, University of Exeter Medical School, University of Exeter, Exeter, United Kingdom
| | - Vinod Kumar
- Priority Research Centre for Healthy Lungs and Hunter Medical Research Institute, The University of Newcastle, Newcastle, Australia
| | - Haroon Khan
- Priority Research Centre for Healthy Lungs and Hunter Medical Research Institute, The University of Newcastle, Newcastle, Australia
| | - Peter A B Wark
- Priority Research Centre for Healthy Lungs and Hunter Medical Research Institute, The University of Newcastle, Newcastle, Australia
| | - Roberta Torregrossa
- Priority Research Centre for Healthy Lungs and Hunter Medical Research Institute, The University of Newcastle, Newcastle, Australia
| | - Philip M Hansbro
- Faculty of Science, Centre for Inflammation, Centenary Institute, University of Technology Sydney, Sydney, Australia
| | - Matthew Whiteman
- Institute of Biomedical and Clinical Sciences, University of Exeter Medical School, University of Exeter, Exeter, United Kingdom
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12
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Impact of Snoring on Telomere Shortening in Adolescents with Atopic Diseases. Genes (Basel) 2021; 12:genes12050766. [PMID: 34069972 PMCID: PMC8157836 DOI: 10.3390/genes12050766] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Revised: 05/13/2021] [Accepted: 05/15/2021] [Indexed: 11/16/2022] Open
Abstract
Atopic diseases can impose a significant burden on children and adolescents. Telomere length is a cellular marker of aging reflecting the impact of cumulative stress exposure on individual health. Since elevated oxidative stress and inflammation burden induced by chronic atopy and snoring may impact telomere length, this study aimed to investigate whether snoring would moderate the relationship between atopic diseases and telomere length in early adolescence. We surveyed 354 adolescents and their parents. Parents reported the adolescents' history of atopic diseases, recent snoring history as well as other family sociodemographic characteristics. Buccal swab samples were also collected from the adolescents for telomere length determination. Independent and combined effects of atopic diseases and snoring on telomere length were examined. Among the surveyed adolescents, 174 were reported by parents to have atopic diseases (20 had asthma, 145 had allergic rhinitis, 53 had eczema, and 25 had food allergy). Shorter TL was found in participants with a history of snoring and atopic diseases (β = -0.34, p = 0.002) particularly for asthma (β = -0.21, p = 0.007) and allergic rhinitis (β = -0.22, p = 0.023). Our findings suggest that snoring in atopic patients has important implications for accelerated telomere shortening. Proper management of atopic symptoms at an early age is important for the alleviation of long-term health consequences at the cellular level.
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13
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Piñeiro‐Hermida S, Martínez P, Blasco MA. Short and dysfunctional telomeres protect from allergen-induced airway inflammation. Aging Cell 2021; 20:e13352. [PMID: 33942458 PMCID: PMC8135011 DOI: 10.1111/acel.13352] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Revised: 02/22/2021] [Accepted: 03/07/2021] [Indexed: 12/17/2022] Open
Abstract
Asthma is a chronic inflammatory disease affecting 300 million people worldwide. As telomere shortening is a well-established hallmark of aging and that asthma incidence decreases with age, here we aimed to study the role of short telomeres in asthma pathobiology. To this end, wild-type and telomerase-deficient mice with short telomeres (third-generation (G3 Tert-/- mice)) were challenged with intranasal house dust mite (HDM) extract. We also challenged with HDM wild-type mice in which we induced a telomere dysfunction by the administration of 6-thio-2´-deoxyguanosine (6-thio-dG). Following HDM exposure, G3 Tert-/- and 6-thio-dG treated mice exhibited attenuated eosinophil counts and presence of hematopoietic stem cells in the bone marrow, as well as lower levels of IgE and circulating eosinophils. Accordingly, both G3 Tert-/- and 6-thio-dG treated wild-type mice displayed reduced airway hyperresponsiveness (AHR), as indicated by decreased airway remodeling and allergic airway inflammation markers in the lung. Furthermore, G3 Tert-/- and 6-thio-dG treated mice showed lower differentiation of Club cells, attenuating goblet cell hyperplasia. Club cells of G3 Tert-/- and 6-thio-dG treated mice displayed increased DNA damage and senescence and reduced proliferation. Thus, short/dysfunctional telomeres play a protective role in murine asthma by impeding both AHR and mucus secretion after HDM exposure. Therefore, our findings imply that telomeres play a relevant role in allergen-induced airway inflammation.
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Affiliation(s)
- Sergio Piñeiro‐Hermida
- Telomeres and Telomerase Group Molecular Oncology Program Spanish National Cancer Centre (CNIO) Madrid Spain
| | - Paula Martínez
- Telomeres and Telomerase Group Molecular Oncology Program Spanish National Cancer Centre (CNIO) Madrid Spain
| | - Maria A. Blasco
- Telomeres and Telomerase Group Molecular Oncology Program Spanish National Cancer Centre (CNIO) Madrid Spain
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14
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Gorenjak V, Petrelis AM, Stathopoulou MG, Visvikis-Siest S. Telomere length determinants in childhood. Clin Chem Lab Med 2021; 58:162-177. [PMID: 31465289 DOI: 10.1515/cclm-2019-0235] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Accepted: 07/30/2019] [Indexed: 01/16/2023]
Abstract
Telomere length (TL) is a dynamic marker that reflects genetic predispositions together with the environmental conditions of an individual. It is closely related to longevity and a number of pathological conditions. Even though the extent of telomere research in children is limited compared to that of adults, there have been a substantial number of studies providing first insights into child telomere biology and determinants. Recent discoveries revealed evidence that TL is, to a great extent, determined already in childhood and that environmental conditions in adulthood have less impact than first believed. Studies have demonstrated that large inter-individual differences in TL are present among newborns and are determined by diverse factors that influence intrauterine development. The first years of child growth are associated with high cellular turnover, which results in fast shortening of telomeres. The rate of telomere loss becomes stable in early adulthood. In this review article we summarise the existing knowledge on telomere dynamics during the first years of childhood, highlighting the conditions that affect newborn TL. We also warn about the knowledge gaps that should be filled to fully understand the regulation of telomeres, in order to implement them as biomarkers for use in diagnostics or treatment.
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Affiliation(s)
| | | | | | - Sophie Visvikis-Siest
- University of Lorraine, Inserm, IGE-PCV, Nancy, France.,Department of Internal Medicine and Geriatrics, CHU Technopôle Nancy-Brabois, Vandoeuvre-lès-Nancy, France
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15
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Lu X, Li R, Yan X. Airway hyperresponsiveness development and the toxicity of PM2.5. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:6374-6391. [PMID: 33394441 DOI: 10.1007/s11356-020-12051-w] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Accepted: 12/10/2020] [Indexed: 04/16/2023]
Abstract
Airway hyperresponsiveness (AHR) is characterized by excessive bronchoconstriction in response to nonspecific stimuli, thereby leading to airway stenosis and increased airway resistance. AHR is recognized as a key characteristic of asthma and is associated with significant morbidity. At present, many studies on the molecular mechanisms of AHR have mainly focused on the imbalance in Th1/Th2 cell function and the abnormal contraction of airway smooth muscle cells. However, the specific mechanisms of AHR remain unclear and need to be systematically elaborated. In addition, the effect of air pollution on the respiratory system has become a worldwide concern. To date, numerous studies have indicated that certain concentrations of fine particulate matter (PM2.5) can increase airway responsiveness and induce acute exacerbation of asthma. Of note, the concentration of PM2.5 does correlate with the degree of AHR. Numerous studies exploring the toxicity of PM2.5 have mainly focused on the inflammatory response, oxidative stress, genotoxicity, apoptosis, autophagy, and so on. However, there have been few reviews systematically elaborating the molecular mechanisms by which PM2.5 induces AHR. The present review separately sheds light on the underlying molecular mechanisms of AHR and PM2.5-induced AHR.
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Affiliation(s)
- Xi Lu
- Department of Respiratory and Critical Care Medicine, The Second Hospital of Hebei Medical University, Shijiazhuang, 050000, Hebei Province, China
| | - Rongqin Li
- Department of Central Laboratory, The Second Hospital of Hebei Medical University, Shijiazhuang, 050000, Hebei Province, China
| | - Xixin Yan
- Department of Respiratory and Critical Care Medicine, The Second Hospital of Hebei Medical University, Shijiazhuang, 050000, Hebei Province, China.
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16
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Barbé-Tuana FM, Grun LK, Pierdoná V, Parisi MM, Friedrich F, Guma FTCR, Pinto LA, Stein RT, Pitrez PMC, Jones MH. Shorter telomeres in children with severe asthma, an indicative of accelerated aging. Aging (Albany NY) 2021; 13:1686-1691. [PMID: 33471779 PMCID: PMC7880354 DOI: 10.18632/aging.202527] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Accepted: 12/23/2020] [Indexed: 11/30/2022]
Abstract
Severe therapy-resistant asthma (STRA) is closely associated with distinct clinical and inflammatory pheno-endotypes, which may contribute to the development of age-related comorbidities. Evidence has demonstrated a contribution of accelerated telomere shortening on the poor prognosis of respiratory diseases in adults. Eotaxin-1 (CCL11) is an important chemokine for eosinophilic recruitment and the progression of asthma. In the last years has also been proposed as an age-promoting factor. This study aimed to investigate the association of relative telomere length (rTL) and eotaxin-1 in asthmatic children. Children aged 8-14 years (n=267) were classified as healthy control (HC, n=126), mild asthma (MA, n=124) or severe therapy-resistant asthma (STRA, n=17). rTL was performed by qPCR from peripheral blood. Eotaxin-1 was quantified by ELISA from fresh-frozen plasma. STRA had shorter telomeres compared to HC (p=0.02) and MA (p=0.006). Eotaxin-1 levels were up-regulated in STRA [median; IQR25-75)] [(1,190 pg/mL; 108–2,510)] compared to MA [(638 pg/mL; 134–1,460)] (p=0.03) or HC [(627 pg/mL; 108–1,750)] (p<0.01). Additionally, shorter telomeres were inversely correlated with eotaxin-1 levels in STRA (r=-0.6, p=0.013). Our results suggest that short telomeres and up-regulated eotaxin-1, features of accelerated aging, could prematurely contribute to a senescent phenotype increasing the risk for early development of age-related diseases in asthma.
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Affiliation(s)
- Florencia M Barbé-Tuana
- Group of Inflammation and Cellular Senescence, Laboratory of Immunobiology, School of Health, Sciences and Life, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Porto Alegre, Brazil.,Postgraduate Program in Cellular and Molecular Biology, School of Health, Sciences and Life, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Porto Alegre, Brazil
| | - Lucas K Grun
- Group of Inflammation and Cellular Senescence, Laboratory of Immunobiology, School of Health, Sciences and Life, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Porto Alegre, Brazil.,Postgraduate Program in Pediatrics and Child Health, School of Medicine, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Porto Alegre, Brazil.,Laboratory of Respiratory Physiology, Infant Center, School of Medicine, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Porto Alegre, Brazil
| | - Vinícius Pierdoná
- Group of Inflammation and Cellular Senescence, Laboratory of Immunobiology, School of Health, Sciences and Life, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Porto Alegre, Brazil.,Postgraduate Program in Biological Sciences, Biochemistry, Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
| | - Mariana M Parisi
- Group of Comprehensive Health Care, Centre for Health and Rural Sciences, University of Cruz Alta, Cruz Alta, Brazil
| | - Frederico Friedrich
- Postgraduate Program in Pediatrics and Child Health, School of Medicine, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Porto Alegre, Brazil.,Laboratory of Respiratory Physiology, Infant Center, School of Medicine, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Porto Alegre, Brazil
| | - Fátima T C R Guma
- Postgraduate Program in Biological Sciences, Biochemistry, Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
| | - Leonardo A Pinto
- Postgraduate Program in Pediatrics and Child Health, School of Medicine, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Porto Alegre, Brazil.,Laboratory of Respiratory Physiology, Infant Center, School of Medicine, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Porto Alegre, Brazil
| | - Renato T Stein
- Postgraduate Program in Pediatrics and Child Health, School of Medicine, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Porto Alegre, Brazil.,Laboratory of Respiratory Physiology, Infant Center, School of Medicine, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Porto Alegre, Brazil
| | - Paulo M C Pitrez
- Pediatric Pulmonology Division, Hospital Moinhos de Vento, Porto Alegre, Brazil
| | - Marcus H Jones
- Postgraduate Program in Pediatrics and Child Health, School of Medicine, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Porto Alegre, Brazil.,Laboratory of Respiratory Physiology, Infant Center, School of Medicine, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Porto Alegre, Brazil
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17
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Mishra A. Interleukin (IL)-15 significance in aging associated asthma pathogenesis. INTERNATIONAL JOURNAL OF CELL BIOLOGY AND PHYSIOLOGY 2020; 3:https://zenodo.org/record/4393736. [PMID: 34027517 PMCID: PMC8138936] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Grants] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Affiliation(s)
- Anil Mishra
- Department of Medicine, Pulmonary Diseases, Tulane Eosinophilic Disorder Center, Tulane University School of Medicine, New Orleans, LA 70112, USA
- Department of Medicine, Section of Pulmonary Diseases, Tulane Eosinophilic Disorders Center (TEDC), Tulane University School of Medicine, New Orleans, LA 70112
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18
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Wang ZN, Su RN, Yang BY, Yang KX, Yang LF, Yan Y, Chen ZG. Potential Role of Cellular Senescence in Asthma. Front Cell Dev Biol 2020; 8:59. [PMID: 32117985 PMCID: PMC7026390 DOI: 10.3389/fcell.2020.00059] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Accepted: 01/22/2020] [Indexed: 12/18/2022] Open
Abstract
Cellular senescence is a complicated process featured by irreversible cell cycle arrest and senescence-associated secreted phenotype (SASP), resulting in accumulation of senescent cells, and low-grade inflammation. Cellular senescence not only occurs during the natural aging of normal cells, but also can be accelerated by various pathological factors. Cumulative studies have shown the role of cellular senescence in the pathogenesis of chronic lung diseases including chronic obstructive pulmonary diseases (COPD) and idiopathic pulmonary fibrosis (IPF) by promoting airway inflammation and airway remodeling. Recently, great interest has been raised in the involvement of cellular senescence in asthma. Limited but valuable data has indicated accelerating cellular senescence in asthma. This review will compile current findings regarding the underlying relationship between cellular senescence and asthma, mainly through discussing the potential mechanisms of cellular senescence in asthma, the impact of senescent cells on the pathobiology of asthma, and the efficiency and feasibility of using anti-aging therapies in asthmatic patients.
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Affiliation(s)
- Zhao-Ni Wang
- Department of Pediatrics, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, China.,Guangzhou Institute of Respiratory Diseases, The First Affiliated Hospital, Guangzhou Medical University, Guangzhou, China
| | - Ruo-Nan Su
- Department of Pediatrics, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Bi-Yuan Yang
- Department of Pediatrics, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Ke-Xin Yang
- Department of Pediatrics, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Li-Fen Yang
- Department of Pediatrics, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Yan Yan
- Guangdong Provincial Key Laboratory of Biomedical Imaging, Guangdong Provincial Engineering Research Center of Molecular Imaging, The Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai, China.,Center for Interventional Medicine, The Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai, China
| | - Zhuang-Gui Chen
- Department of Pediatrics, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
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19
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Sachdeva K, Do DC, Zhang Y, Hu X, Chen J, Gao P. Environmental Exposures and Asthma Development: Autophagy, Mitophagy, and Cellular Senescence. Front Immunol 2019; 10:2787. [PMID: 31849968 PMCID: PMC6896909 DOI: 10.3389/fimmu.2019.02787] [Citation(s) in RCA: 81] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2019] [Accepted: 11/13/2019] [Indexed: 12/11/2022] Open
Abstract
Environmental pollutants and allergens induce oxidative stress and mitochondrial dysfunction, leading to key features of allergic asthma. Dysregulations in autophagy, mitophagy, and cellular senescence have been associated with environmental pollutant and allergen-induced oxidative stress, mitochondrial dysfunction, secretion of multiple inflammatory proteins, and subsequently development of asthma. Particularly, particulate matter 2.5 (PM2.5) has been reported to induce autophagy in the bronchial epithelial cells through activation of AMP-activated protein kinase (AMPK), drive mitophagy through activating PTEN-induced kinase 1(PINK1)/Parkin pathway, and induce cell cycle arrest and senescence. Intriguingly, allergens, including ovalbumin (OVA), Alternaria alternata, and cockroach allergen, have also been shown to induce autophagy through activation of different signaling pathways. Additionally, mitochondrial dysfunction can induce cell senescence due to excessive ROS production, which affects airway diseases. Although autophagy and senescence share similar properties, recent studies suggest that autophagy can either accelerate the development of senescence or prevent senescence. Thus, in this review, we evaluated the literature regarding the basic cellular processes, including autophagy, mitophagy, and cellular senescence, explored their molecular mechanisms in the regulation of the initiation and downstream signaling. Especially, we highlighted their involvement in environmental pollutant/allergen-induced major phenotypic changes of asthma such as airway inflammation and remodeling and reviewed novel and critical research areas for future studies. Ultimately, understanding the regulatory mechanisms of autophagy, mitophagy, and cellular senescence may allow for the development of new therapeutic targets for asthma.
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Affiliation(s)
- Karan Sachdeva
- Johns Hopkins Asthma & Allergy Center, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Danh C. Do
- Johns Hopkins Asthma & Allergy Center, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Yan Zhang
- Johns Hopkins Asthma & Allergy Center, Johns Hopkins University School of Medicine, Baltimore, MD, United States
- Department of Respiratory Medicine, Xiangya Hospital, Central South University, Changsha, China
| | - Xinyue Hu
- Johns Hopkins Asthma & Allergy Center, Johns Hopkins University School of Medicine, Baltimore, MD, United States
- Department of Respiratory Medicine, Xiangya Hospital, Central South University, Changsha, China
| | - Jingsi Chen
- Johns Hopkins Asthma & Allergy Center, Johns Hopkins University School of Medicine, Baltimore, MD, United States
- Department of Dermatology, Children's Hospital, Chongqing Medical University, Chongqing, China
| | - Peisong Gao
- Johns Hopkins Asthma & Allergy Center, Johns Hopkins University School of Medicine, Baltimore, MD, United States
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20
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Havet A, Li Z, Zerimech F, Sanchez M, Siroux V, Le Moual N, Brunekreef B, Künzli N, Jacquemin B, Varraso R, Matran R, Nadif R. Does the oxidative stress play a role in the associations between outdoor air pollution and persistent asthma in adults? Findings from the EGEA study. Environ Health 2019; 18:90. [PMID: 31665023 PMCID: PMC6819357 DOI: 10.1186/s12940-019-0532-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Accepted: 10/01/2019] [Indexed: 05/09/2023]
Abstract
BACKGROUND Evidences that oxidative stress plays a role in the associations between outdoor air pollution and asthma are growing. We aimed to study the role of plasma fluorescent oxidation products levels (FlOPs; an oxidative stress-related biomarker), as potential mediators, in the associations between outdoor air pollution and persistent asthma. METHODS Analyses were conducted in 204 adult asthmatics followed up in the French case-control and family study on asthma (EGEA; the Epidemiological study of the Genetic and Environmental factors of Asthma). Persistent asthma was defined as having current asthma at EGEA2 (baseline, 2003-2007) and EGEA3 (follow-up, 2011-2013). Exposures to nitrogen dioxide, nitrogen oxides, road traffic, particulate matter with a diameter ≤ 10 μm (PM10) and ≤ 2.5 μm were estimated by ESCAPE models (2009-2010), and ozone (O3) by IFEN models (2004). We used a mediation analysis to assess the mediated effect by FlOPs levels and the interaction between FlOPs levels and air pollution. RESULTS FlOPs levels increased with PM10 and O3 (adjusted β = 0.04 (95%CI 0.001-0.08), aβ = 0.04 (95%CI 0.009-0.07) per 10 μg/m3, respectively), and the risk of persistent asthma increased with FlOPs levels (aOR = 1.81 (95%CI 1.08-3.02)). The risk of persistent asthma decreased with exposures to NO2, NOx and PM2.5 (aOR ranging from 0.62 to 0.94), and increased with exposures to PM10, O3, O3-summer and road traffic, the greater effect being observed for O3 (aOR = 1.78, 95% CI 0.73-4.37, per 10 μg/m3). Using mediation analysis, we observed a positive total effect (aOR = 2.16, 95%CI 0.70-11.9), a positive direct effect of O3 on persistent asthma (OR = 1.68, 95%CI 0.57-7.25), and a positive indirect effect mediated by FIOPs levels (aOR = 1.28 (95%CI 1.01-2.29)) accounting for 41% of the total effect. CONCLUSIONS Our results add insights on the role of oxidative stress in the association between air pollution and persistent asthma.
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Affiliation(s)
- Anaïs Havet
- INSERM U1168, VIMA: Aging and chronic diseases. Epidemiological and public health approaches, Villejuif, France
- Univ Versailles St-Quentin-en-Yvelines, UMRS 1168, Montigny-le-Bretonneux, France
| | - Zhen Li
- Key Laboratory of Obstetric & Gynecologic and Pediatric Diseases and Birth Defects, Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu, China
| | - Farid Zerimech
- CHU de Lille, Laboratoire de Biochimie et Biologie Moléculaire, Pôle de Biologie Pathologie Génétique, Lille, France
| | - Margaux Sanchez
- ISGlobal, Centre for Research in Environmental Epidemiology, Universitat Pompeu Fabra, CIBER Epidemiología y Salud Pública, Barcelona, Spain
| | - Valérie Siroux
- Institute for Advanced Biosciences, Centre de recherche UGA-Inserm U1209 CNRS UMR 5309, équipe d’épidémiologie environnementale, Site Santé, Allée des Alpes, Grenoble, France
| | - Nicole Le Moual
- INSERM U1168, VIMA: Aging and chronic diseases. Epidemiological and public health approaches, Villejuif, France
- Univ Versailles St-Quentin-en-Yvelines, UMRS 1168, Montigny-le-Bretonneux, France
| | - Bert Brunekreef
- Institute for Risk Assessment Sciences, University Utrecht, Utrecht, the Netherlands
- Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht, the Netherlands
| | - Nino Künzli
- Swiss Tropical and Public Health Institute, Basel, Switzerland
- University of Basel, Basel, Switzerland
| | - Bénédicte Jacquemin
- INSERM U1168, VIMA: Aging and chronic diseases. Epidemiological and public health approaches, Villejuif, France
- Univ Versailles St-Quentin-en-Yvelines, UMRS 1168, Montigny-le-Bretonneux, France
| | - Raphaëlle Varraso
- INSERM U1168, VIMA: Aging and chronic diseases. Epidemiological and public health approaches, Villejuif, France
- Univ Versailles St-Quentin-en-Yvelines, UMRS 1168, Montigny-le-Bretonneux, France
| | | | - Rachel Nadif
- INSERM U1168, VIMA: Aging and chronic diseases. Epidemiological and public health approaches, Villejuif, France
- Univ Versailles St-Quentin-en-Yvelines, UMRS 1168, Montigny-le-Bretonneux, France
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21
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Melén E, Guerra S, Hallberg J, Jarvis D, Stanojevic S. Linking COPD epidemiology with pediatric asthma care: Implications for the patient and the physician. Pediatr Allergy Immunol 2019; 30:589-597. [PMID: 30968967 DOI: 10.1111/pai.13054] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Accepted: 03/22/2019] [Indexed: 12/25/2022]
Abstract
What are the implications of a lower than expected forced expiratory volume in one second (FEV1) in childhood on respiratory health later in adulthood? Lung function is known to track with age, and there is evidence from recent epidemiologic studies that impaired lung function early in life is associated with later chronic airflow limitation, or even chronic obstructive pulmonary disease, COPD. This risk seems particularly strong in subjects with persistent and severe forms of childhood asthma. Can we translate findings from longitudinal cohort studies to individual risk predictions and preventive guidelines in our pediatric care? In this review, we discuss the clinical implementations of recent epidemiological respiratory studies and the importance of preserved lung health across the life course. Also, we evaluate available clinical tools, primarily lung function measures, and profiles of risk factors, including biomarkers, that may help identifying children at risk of chronic airway disease in adulthood. We conclude that translating population level results to the individual patient in the pediatric care setting is not straight forward, and that there is a need for studies specifically designed to evaluate performance of prediction of risk profiles for long-term sequelae of childhood asthma and lung function impairment.
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Affiliation(s)
- Erik Melén
- Department of Clinical Science and Education, Södersjukhuset, Karolinska Institutet, Stockholm, Sweden.,Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden.,Sachs' Children and Youth Hospital, Södersjukhuset, Stockholm, Sweden
| | - Stefano Guerra
- Asthma and Airway Disease Research Center, University of Arizona, Tucson, Arizona.,ISGlobal, Barcelona, Spain
| | - Jenny Hallberg
- Department of Clinical Science and Education, Södersjukhuset, Karolinska Institutet, Stockholm, Sweden.,Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden.,Sachs' Children and Youth Hospital, Södersjukhuset, Stockholm, Sweden
| | - Deborah Jarvis
- National Heart and Lung Institute, Imperial College London, London, United Kingdom
| | - Sanja Stanojevic
- Translational Medicine, Hospital for Sick Children, Toronto, Ontario, Canada
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22
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Abstract
PURPOSE OF REVIEW Genomic mutations in telomere-related genes have been recognized as a cause of familial forms of idiopathic pulmonary fibrosis (IPF). However, it has become increasingly clear that telomere syndromes and telomere shortening are associated with various types of pulmonary disease. Additionally, it was found that also single nucleotide polymorphisms (SNPs) in telomere-related genes are risk factors for the development of pulmonary disease. This review focuses on recent updates on pulmonary phenotypes associated with genetic variation in telomere-related genes. RECENT FINDINGS Genomic mutations in seven telomere-related genes cause pulmonary disease. Pulmonary phenotypes associated with these mutations range from many forms of pulmonary fibrosis to emphysema and pulmonary vascular disease. Telomere-related mutations account for up to 10% of sporadic IPF, 25% of familial IPF, 10% of connective-tissue disease-associated interstitial lung disease, and 1% of COPD. Mixed disease forms have also been found. Furthermore, SNPs in TERT, TERC, OBFC1, and RTEL1, as well as short telomere length, have been associated with several pulmonary diseases. Treatment of pulmonary disease caused by telomere-related gene variation is currently based on disease diagnosis and not on the underlying cause. SUMMARY Pulmonary phenotypes found in carriers of telomere-related gene mutations and SNPs are primarily pulmonary fibrosis, sometimes emphysema and rarely pulmonary vascular disease. Genotype-phenotype relations are weak, suggesting that environmental factors and genetic background of patients determine disease phenotypes to a large degree. A disease model is presented wherever genomic variation in telomere-related genes cause specific pulmonary disease phenotypes whenever triggered by environmental exposure, comorbidity, or unknown factors.
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23
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Abstract
Chronic obstructive pulmonary disease (COPD) and idiopathic pulmonary fibrosis are regarded as a diseases of accelerated lung ageing and show all of the hallmarks of ageing, including telomere shortening, cellular senescence, activation of PI3 kinase-mTOR signaling, impaired autophagy, mitochondrial dysfunction, stem cell exhaustion, epigenetic changes, abnormal microRNA profiles, immunosenescence and a low grade chronic inflammation due to senescence-associated secretory phenotype (SASP). Many of these ageing mechanisms are driven by exogenous and endogenous oxidative stress. There is also a reduction in anti-ageing molecules, such as sirtuins and Klotho, which further accelerate the ageing process. Understanding these molecular mechanisms has identified several novel therapeutic targets and several drugs and dietary interventions are now in development to treat chronic lung disease.
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Affiliation(s)
- Peter J Barnes
- Airway Disease Section, National Heart and Lung Institute, Imperial College, London, UK.
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24
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Zein JG, Denson JL, Wechsler ME. Asthma over the Adult Life Course: Gender and Hormonal Influences. Clin Chest Med 2018; 40:149-161. [PMID: 30691709 DOI: 10.1016/j.ccm.2018.10.009] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Asthma is a common disorder that affects genders differently across the life span. Earlier in life, it is more common in boys. At puberty, asthma becomes more common and often more severe in girls and women. The effect of sex hormones on asthma incidence and its severity is difficult to differentiate from other asthma severity risk factors, such as racial background, socioeconomic factors, obesity, atopy, environmental exposure, and, in particular, lung aging. Recognizing gender-associated and age-associated differences is important to understanding the pathobiology of asthma and to providing effective education and personalized care for patients with asthma across the life course.
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Affiliation(s)
- Joe G Zein
- Respiratory Institute, Cleveland Clinic, 9500 Euclid Avenue, Cleveland, OH 44106, USA
| | - Joshua L Denson
- National Jewish Health, 1400 Jackson Street, Denver, CO 80206, USA
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25
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Andersson U, Degerman S, Dahlin AM, Wibom C, Johansson G, Bondy ML, Melin BS. The association between longer relative leukocyte telomere length and risk of glioma is independent of the potentially confounding factors allergy, BMI, and smoking. Cancer Causes Control 2018; 30:177-185. [PMID: 30560391 DOI: 10.1007/s10552-018-1120-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Accepted: 12/06/2018] [Indexed: 12/28/2022]
Abstract
PURPOSE Previous studies have suggested an association between relative leukocyte telomere length (rLTL) and glioma risk. This association may be influenced by several factors, including allergies, BMI, and smoking. Previous studies have shown that individuals with asthma and allergy have shortened relative telomere length, and decreased risk of glioma. Though, the details and the interplay between rLTL, asthma and allergies, and glioma molecular phenotype is largely unknown. METHODS rLTL was measured by qPCR in a Swedish population-based glioma case-control cohort (421 cases and 671 controls). rLTL was related to glioma risk and health parameters associated with asthma and allergy, as well as molecular events in glioma including IDH1 mutation, 1p/19q co-deletion, and EGFR amplification. RESULTS Longer rLTL was associated with increased risk of glioma (OR = 1.16; 95% CI 1.02-1.31). Similar to previous reports, there was an inverse association between allergy and glioma risk. Specific, allergy symptoms including watery eyes was most strongly associated with glioma risk. High body mass index (BMI) a year prior diagnosis was significantly protective against glioma in our population. Adjusting for allergy, asthma, BMI, and smoking did not markedly change the association between longer rLTL and glioma risk. rLTL among cases was not associated with IDH1 mutation, 1p/19q co-deletion, or EGFR amplification, after adjusting for age at diagnosis and sex. CONCLUSIONS In this Swedish glioma case-control cohort, we identified that long rLTL increases the risk of glioma, an association not confounded by allergy, BMI, or smoking. This highlights the complex interplay of the immune system, rLTL and cancer risk.
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Affiliation(s)
- Ulrika Andersson
- Department of Radiation Sciences, Oncology, Umea University, Umea, Sweden.
| | - Sofie Degerman
- Department of Medical Biosciences, Pathology, Umea University, Umea, Sweden
| | - Anna M Dahlin
- Department of Radiation Sciences, Oncology, Umea University, Umea, Sweden
| | - Carl Wibom
- Department of Radiation Sciences, Oncology, Umea University, Umea, Sweden
| | - Gunnar Johansson
- Department of Radiation Sciences, Oncology, Umea University, Umea, Sweden
| | - Melissa L Bondy
- Department of Medicine, Dan L. Duncan Comprehensive Cancer Center, Baylor College of Medicine, Houston, TX, USA
| | - Beatrice S Melin
- Department of Radiation Sciences, Oncology, Umea University, Umea, Sweden
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26
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Henckel E, Svenson U, Nordlund B, Berggren Broström E, Hedlin G, Degerman S, Bohlin K. Telomere length was similar in school-age children with bronchopulmonary dysplasia and allergic asthma. Acta Paediatr 2018; 107:1395-1401. [PMID: 29476624 DOI: 10.1111/apa.14294] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/15/2017] [Revised: 02/07/2018] [Accepted: 02/19/2018] [Indexed: 11/26/2022]
Abstract
AIM Inflammation is a major factor in the pathophysiology of bronchopulmonary dysplasia (BPD), and it contributes to accelerated telomere shortening and cellular ageing. This study aimed to determine its effect on telomere length and lung function in school-aged children born preterm with BPD. METHODS We examined 29 children with BPD, born preterm in Stockholm county 1998-99, along with 28 children with allergic asthma born at term matched for age and gender. At 10 years of age, we measured relative telomere length (RTL) in blood by quantitative polymerase chain reaction, lung function by spirometry and inflammation by fractional exhaled nitric oxide and blood cytokines. RESULTS RTL was not different in preterm born with BPD compared to term born children with asthma. The gender effect was strong in both groups; girls had significantly longer median RTL than boys (1.8 versus 1.5, p < 0.01). Short RTL was associated with low forced expiratory flow, also after adjusting for gender, but was not affected by severity of BPD or ongoing inflammation. CONCLUSION Telomere length was similar in 10-year-old children born preterm with a history of BPD and term born children with allergic asthma. However, impaired lung function and male gender were associated with short telomeres.
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Affiliation(s)
- E Henckel
- Department of Clinical Science, Intervention and Technology; Karolinska Institutet; Stockholm Sweden
- Department of Neonatology; Karolinska University Hospital; Stockholm Sweden
| | - U Svenson
- Department of Medical Biosciences; Umeå University; Umeå Sweden
| | - B Nordlund
- Department of Women and Children′s Health; Karolinska Institutet and Astrid Lindgren Children's Hospital; Karolinska University Hospital; Stockholm Sweden
| | - E Berggren Broström
- Department of Paediatrics; Sachs' Children and Youth Hospital; Stockholm Sweden
- Department of Clinical Science and Education; Södersjukhuset; Karolinska Institutet; Stockholm Sweden
| | - G Hedlin
- Department of Women and Children′s Health; Karolinska Institutet and Astrid Lindgren Children's Hospital; Karolinska University Hospital; Stockholm Sweden
| | - S Degerman
- Department of Medical Biosciences; Umeå University; Umeå Sweden
| | - K Bohlin
- Department of Clinical Science, Intervention and Technology; Karolinska Institutet; Stockholm Sweden
- Department of Neonatology; Karolinska University Hospital; Stockholm Sweden
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27
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Cazzola M, Matera MG, Rogliani P, Calzetta L. Senolytic drugs in respiratory medicine: is it an appropriate therapeutic approach? Expert Opin Investig Drugs 2018; 27:573-581. [DOI: 10.1080/13543784.2018.1492548] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Mario Cazzola
- Chair of Respiratory Medicine, Department of Experimental Medicine and Surgery, University of Rome “Tor Vergata”, Rome, Italy
| | - Maria Gakriella Matera
- Unit of Pharmacology, Department of Experimental Medicine, University of Campania “Luigi Vanvitelli”, Naples, Italy
| | - Paola Rogliani
- Chair of Respiratory Medicine, Department of Experimental Medicine and Surgery, University of Rome “Tor Vergata”, Rome, Italy
| | - Luigino Calzetta
- Chair of Respiratory Medicine, Department of Experimental Medicine and Surgery, University of Rome “Tor Vergata”, Rome, Italy
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28
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Córdoba-Lanús E, Cabrera-López C, Cazorla-Rivero S, Rodríguez-Pérez MC, Aguirre-Jaime A, Celli B, Casanova C. Shorter telomeres in non-smoking patients with airflow limitation. Respir Med 2018; 138:123-128. [PMID: 29724383 DOI: 10.1016/j.rmed.2018.04.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/05/2018] [Revised: 03/19/2018] [Accepted: 04/01/2018] [Indexed: 01/28/2023]
Abstract
BACKGROUND Cross-sectional and longitudinal studies describe shorter telomeres in patients with chronic obstructive pulmonary disease (COPD) compared to matched non-COPD controls, but the relationship is confounded by tobacco consumption. We hypothesized that telomere shortening would be similar between non-smoking and smoking individuals with airflow limitation and shorter than non-obstructed controls. METHODS Telomere length (T/S) was measured by qPCR in blood leukocytes of 80 non-smoking patients and 80 age-matched smokers with airflow limitation. Forty non-smoker healthy individuals served as controls. Anthropometrics, lung function, previous and current comorbidities were recorded in all individuals. Relationship between telomere length and clinical and functional variables were explored in the three groups. RESULTS Telomeres length was similar in non-smokers and smoker individuals with airflow limitation (T/S = 0.61 ± 0.19 vs. 0.60 ± 0.23, p > 0.05) respectively. Telomere length was significantly shorter in both groups compared to healthy controls (T/S 0.79 ± 0.40; p = 0.01) independent from age and sex. No significant association was found between the telomere length and clinical or lung function parameters. CONCLUSIONS Telomere shortening is associated with airflow limitation independent of smoking status. Weather premature ageing or biologically determined shorter telomeres are responsible for this finding remain to be determined.
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Affiliation(s)
- Elizabeth Córdoba-Lanús
- Research Unit, Hospital Universitario Nuestra Señora de Candelaria, Santa Cruz de Tenerife, Spain; Universidad de La Laguna, Santa Cruz de Tenerife, Spain.
| | - Carlos Cabrera-López
- Pulmonary Division, Hospital Universitario de Gran Canaria Doctor Negrín, Gran Canaria, Spain
| | - Sara Cazorla-Rivero
- Research Unit, Hospital Universitario Nuestra Señora de Candelaria, Santa Cruz de Tenerife, Spain; Universidad de La Laguna, Santa Cruz de Tenerife, Spain
| | - M Cristo Rodríguez-Pérez
- Research Unit, Hospital Universitario Nuestra Señora de Candelaria, Santa Cruz de Tenerife, Spain
| | - Armando Aguirre-Jaime
- Research Unit, Hospital Universitario Nuestra Señora de Candelaria, Santa Cruz de Tenerife, Spain
| | - Bartolomé Celli
- Pulmonary and Critical Care Department, Brigham and Women's Hospital, Boston, MA, USA
| | - Ciro Casanova
- Research Unit, Hospital Universitario Nuestra Señora de Candelaria, Santa Cruz de Tenerife, Spain; Pulmonary Division, Hospital Universitario Nuestra Señora de Candelaria, Santa Cruz de Tenerife, Spain; Universidad de La Laguna, Santa Cruz de Tenerife, Spain
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29
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30
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Dunn RM, Busse PJ, Wechsler ME. Asthma in the elderly and late-onset adult asthma. Allergy 2018; 73:284-294. [PMID: 28722758 DOI: 10.1111/all.13258] [Citation(s) in RCA: 133] [Impact Index Per Article: 22.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/16/2017] [Indexed: 12/26/2022]
Abstract
Elderly asthmatics are at a higher risk for morbidity and mortality from their asthma than younger patients. There are important age-related physiologic and immunologic changes that complicate the presentation, diagnosis, and management of asthma in the aged population. Evidence suggests that elderly asthmatics are more likely to be underdiagnosed and undertreated. Additionally, elderly patients with asthma have highest rates of morbidity and mortality from their disease than younger patients. The underlying airway inflammation of asthma in this age group likely differs from younger patients and is felt to be non-type 2 mediated. While elderly patients are underrepresented in clinical trials, subgroup analysis of large clinical trials suggests they may be less likely to respond to traditional asthma therapies (ie, corticosteroids). As the armamentarium of pharmacologic asthma therapies expands, it will be critical to include elderly asthmatics in large clinical trials so that therapy may be better tailored to this at-risk and growing population.
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Affiliation(s)
- R. M. Dunn
- Department of Pulmonary and Critical Care Medicine; University of Colorado School of Medicine; Aurora CO USA
- National Jewish Health; Denver CO USA
| | - P. J. Busse
- Division of Clinical Immunology; Icahn School of Medicine at Mount Sinai; New York NY USA
| | - M. E. Wechsler
- Department of Pulmonary and Critical Care Medicine; National Jewish Health; Denver CO USA
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31
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Mirzakhani H, De Vivo I, Leeder JS, Gaedigk R, Vyhlidal CA, Weiss ST, Tantisira K. Early pregnancy intrauterine fetal exposure to maternal smoking and impact on fetal telomere length. Eur J Obstet Gynecol Reprod Biol 2017; 218:27-32. [PMID: 28926727 DOI: 10.1016/j.ejogrb.2017.09.013] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2017] [Revised: 07/19/2017] [Accepted: 09/13/2017] [Indexed: 11/18/2022]
Abstract
BACKGROUND Reduced telomere length, or its accelerated attrition, has been implicated in aging, mortality, and several human diseases, including respiratory diseases. Age dependent manifestation of telomere-mediated disease during life span indicates the role of developmental stage in these diseases and highlights the importance of fetal developmental process in utero and at earlier life stages. Environmental determinants during developmental and later stages of life could affect telomere length. Smoke exposure as one of these significant determinants have been investigated in association with telomere length in neonates at time of delivery, children and adults. OBJECTIVE We sought to investigate whether intrauterine fetal exposure to tobacco smoking characterized by placenta cotinine levels during early weeks of pregnancy might be associated with shorter relative telomere length (T/S ratio) as compared to fetuses without exposure to tobacco smoking. STUDY DESIGN 207 Human placenta and epithelial lung samples were used for both fetal lung telomere length assessment and measurement of placental cotinine levels. Tissues were obtained from two NICHD-supported tissue retrieval programs with registries for elective abortions, the University of Washington Center for Birth Defects Research (Seattle, WA) and the University of Maryland Brain and Tissue Bank for Developmental Disorders (Baltimore, MD). Cotinine levels (ng/g total placental tissue) were determined in whole cell extracts prepared from human placenta samples to characterize and confirm the cotinine exposure status associated with maternal smoking. Relative telomere length (T/S ratio) in genomic DNA extracted from fetal lung tissue was measured by use of quantitative real-time polymerase chain reaction. Multivariable linear regression was used to investigate the relationship between fetal Telomere-to-Single Copy (T/S) ratio and tobacco exposure. RESULTS The estimated post-conception ages for included samples in the study ranged from 54 to 137days (7-19 weeks of gestation); 47.37% of fetal samples had female sex. Of the samples included in the analysis 96 and 111 fetal samples with and without intrauterine tobacco smoking exposure were distinguished. While T/S ratio was not different between those with and without smoking exposure (1.24±0.41 and 1.27±0.48, respectively; P=0.70), a significant effect modification of post-conception age on the relationship of intrauterine smoke exposure on fetal T/S ratio was observed (adjusted coefficient=-0.008, 95% CI: -0.016, -0.0004). The smoke exposure status was associated with T/S ratio after 93-day post conception (adjusted coefficient=-0.29, 95% CI: -0.53, -0.052). CONCLUSIONS Our results demonstrate a significant association of smoke exposure in utero at early pregnancy with shortened fetal relative telomere length in the developing lung and suggest that the detrimental effect of smoking exposure on future disease sequelae may start at the early stages of pregnancy.
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Affiliation(s)
- Hooman Mirzakhani
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Immaculata De Vivo
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA; Department of Epidemiology, T.H. Chan School of Public Health, Boston, MA, USA
| | - J Steven Leeder
- Division of Pharmacology, Toxicology and Experimental Therapeutics, Children's Mercy Kansas City, Kansas City, MO, USA
| | - Roger Gaedigk
- Division of Pharmacology, Toxicology and Experimental Therapeutics, Children's Mercy Kansas City, Kansas City, MO, USA
| | - Carrie A Vyhlidal
- Division of Pharmacology, Toxicology and Experimental Therapeutics, Children's Mercy Kansas City, Kansas City, MO, USA
| | - Scott T Weiss
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Kelan Tantisira
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA.
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32
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Pavanello S, Stendardo M, Mastrangelo G, Bonci M, Bottazzi B, Campisi M, Nardini M, Leone R, Mantovani A, Boschetto P. Inflammatory Long Pentraxin 3 is Associated with Leukocyte Telomere Length in Night-Shift Workers. Front Immunol 2017; 8:516. [PMID: 28536575 PMCID: PMC5422482 DOI: 10.3389/fimmu.2017.00516] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2017] [Accepted: 04/18/2017] [Indexed: 12/24/2022] Open
Abstract
Aging is an emerging worldwide threat to public health, even in the workplace, as it links with risk of illness and death. Bewildered inflammatory responses and stressful conditions associate with age-related disorders. Additionally, circadian rhythm disruption, a critical health issue in night-shift workers, correlates with premature aging. We investigated the hypothesis of a link between altered inflammatory response, detected by plasmatic long pentraxin 3 (PTX3), and biological aging, measured by leukocyte telomere length (LTL), attrition, and possibly induced by night-shift work. Within the framework of a cross-sectional study, such possible relationships were appraised by simultaneous equation model (SEM) technique among day and night-shift hospital workers. PTX3 levels, modulated by several aging conditions [i.e., body mass index (BMI) (beta = −0.22; p = 0.022), C-reactive protein (CRP) (beta = −0.07; p = 0.000), and cardiovascular diseases with hypertension included (CVD) (beta = −0.12; p = 0.000)], positively associate with LTL (coefficient = 0.15; p = 0.033). LTL, in turn is reduced by CVD (beta = −0.15; p = 0.000), binge drinking (beta = −0.10; p = 0.004), and CRP (beta = −0.05; p = 0.026). On the other hand, night-shift work, found to be remarkably free from aging risk factors [i.e., age (beta = −0.13; p = 0.017), BMI (beta = −0.17; p = 0.030), CVD (beta = −0.14; p = 0.000), and binge drinking (beta = −0.13; p = 0.000)], does associate almost significantly with reversed PTX3 (coefficient = −0.09; p = 0.089) and even with CRP (beta = 0.17; p = 0.000). In conclusion, the SEM analysis indicates that PTX3 is positively linked to LTL. The finding suggests a possible new role of this long pentraxin that, by orchestrating an efficient governance of inflammatory processes, may protect telomere from attrition, ensuring therefore the genetic stability of cells. The higher CRP levels among night-shift workers suggest that night-shift work is associated with increased systemic inflammation. This would make nocturnal workers more susceptible to premature aging.
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Affiliation(s)
- Sofia Pavanello
- Occupational Medicine, Department of Cardiac, Thoracic and Vascular Sciences, University of Padova, Padova, Italy
| | | | - Giuseppe Mastrangelo
- Occupational Medicine, Department of Cardiac, Thoracic and Vascular Sciences, University of Padova, Padova, Italy
| | - Melissa Bonci
- Department of Medical Sciences, University of Ferrara, Ferrara, Italy
| | - Barbara Bottazzi
- Laboratory of Research in Immunology and Inflammation, Humanitas Clinical and Research Center, Rozzano, Milan, Italy
| | - Manuela Campisi
- Occupational Medicine, Department of Cardiac, Thoracic and Vascular Sciences, University of Padova, Padova, Italy
| | - Marco Nardini
- Department of Prevention and Protection, University-Hospital and Public Health Service of Ferrara, Ferrara, Italy
| | - Roberto Leone
- Laboratory of Research in Immunology and Inflammation, Humanitas Clinical and Research Center, Rozzano, Milan, Italy
| | - Alberto Mantovani
- Laboratory of Research in Immunology and Inflammation, Humanitas Clinical and Research Center, Rozzano, Milan, Italy.,Humanitas University, Rozzano, Milan, Italy
| | - Piera Boschetto
- Department of Medical Sciences, University of Ferrara, Ferrara, Italy
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Herz C, Tran HTT, Landerer S, Gaus J, Schlotz N, Lehr L, Schäfer WR, Treeck O, Odongo GA, Skatchkov I, Lamy E. Normal human immune cells are sensitive to telomerase inhibition by Brassica-derived 3,3-diindolylmethane,partly mediated via ERα/β-AP1 signaling. Mol Nutr Food Res 2017; 61. [PMID: 28267258 DOI: 10.1002/mnfr.201600524] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2016] [Revised: 02/13/2017] [Accepted: 02/22/2017] [Indexed: 11/07/2022]
Abstract
SCOPE Indole-3-carbinol (I3C) and 3,3'-diindolylmethane (DIM) from Brassica plants are regarded as promising anticancer phytochemicals. The enzyme telomerase is a very attractive target for cancer therapeutics; in normal cells such as lymphocytes, it plays a decisive role for cell maintenance. The effect of I3C and DIM on telomerase in normal human immune cells (PBMC) was studied compared to leukaemia cells (HL-60). Signalling of telomerase regulation via estrogen receptor (ER) was addressed. METHODS AND RESULTS Short-term treatment with I3C and DIM inhibited telomerase activity in leukaemia cells (>30 μM I3C; >3 μM DIM). In CD3/CD28 activated PBMC, inhibition was stronger, though (>3 μM I3C; >1 μM DIM). DIM long-term treatment resulted in DNA damage induction and proliferation inhibition in PBMC as determined by the comet assay and CFSE staining, respectively. A relevance of ERα/β-AP1 signaling for telomerase inhibition on enzyme activity, but not transcription level became evident indicating a nonclassical mode for ER regulation of telomerase by DIM. CONCLUSION Although desired in cancer cells, this study identified a potential adverse impact of I3C and DIM on telomerase action in normal human immune cells, partly mediated by an ER-dependent mechanism. These new findings should be considered for potential chronic high-dose chemoprevention strategies using these compounds.
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Affiliation(s)
- Corinna Herz
- Molecular Preventive Medicine, Institute of Prevention and Cancer Epidemiology, University Medical Center Freiburg, Freiburg, Germany
| | - Hoai Thi Thu Tran
- Molecular Preventive Medicine, Institute of Prevention and Cancer Epidemiology, University Medical Center Freiburg, Freiburg, Germany
| | - Steffen Landerer
- Institute of Environmental Health Sciences, University Medical Center Freiburg, Freiburg, Germany
| | - Johanna Gaus
- Molecular Preventive Medicine, Institute of Prevention and Cancer Epidemiology, University Medical Center Freiburg, Freiburg, Germany
| | - Nina Schlotz
- Molecular Preventive Medicine, Institute of Prevention and Cancer Epidemiology, University Medical Center Freiburg, Freiburg, Germany
| | - Lia Lehr
- Molecular Preventive Medicine, Institute of Prevention and Cancer Epidemiology, University Medical Center Freiburg, Freiburg, Germany
| | - Wolfgang R Schäfer
- Department of Obstetrics & Gynecology, University Medical Center Freiburg, Freiburg, Germany
| | - Oliver Treeck
- Department of Gynecology and Obstetrics, University Medical Center Regensburg, Regensburg, Germany
| | - Grace Akinyi Odongo
- Molecular Preventive Medicine, Institute of Prevention and Cancer Epidemiology, University Medical Center Freiburg, Freiburg, Germany
| | - Ivan Skatchkov
- Molecular Preventive Medicine, Institute of Prevention and Cancer Epidemiology, University Medical Center Freiburg, Freiburg, Germany
| | - Evelyn Lamy
- Molecular Preventive Medicine, Institute of Prevention and Cancer Epidemiology, University Medical Center Freiburg, Freiburg, Germany
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Abstract
Tremendous efforts have been invested in research to (1) discover risk factors, biomarkers, and clinical characteristics; (2) understand the pathophysiology and treatment response variability in severe asthma; and (3) design new therapies. However, to combat severe asthma, many questions concerning the pathogenesis of severe asthma, including its natural history, genetic and environmental risk factors, and disease mechanisms, must be answered. In this article we highlight some of the major discoveries concerning the pathogenesis of severe asthma and its therapeutic development. We conclude that discoveries on numerous fronts of severe asthma, from disease heterogeneity, features of airway remodeling, cytokine mediators and signaling pathways underlying disease pathogenesis, disease mechanisms, potential biomarkers, to new therapeutic targets, demonstrate that progress has been made in understanding and developing more effective treatments for this difficult-to-treat disease.
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35
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Fuchs O, Bahmer T, Rabe KF, von Mutius E. Asthma transition from childhood into adulthood. THE LANCET RESPIRATORY MEDICINE 2016; 5:224-234. [PMID: 27666650 DOI: 10.1016/s2213-2600(16)30187-4] [Citation(s) in RCA: 144] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Received: 03/05/2016] [Revised: 06/13/2016] [Accepted: 06/23/2016] [Indexed: 12/11/2022]
Abstract
Asthma is the most prevalent chronic respiratory disease both in children and adults and resembles a complex syndrome rather than a single disease. Different methods have been developed to better characterise distinct asthma phenotypes in childhood and adulthood. In studies of adults, most phenotyping relies on biomaterials from the lower airways; however, this information is missing in paediatric studies because of restricted accessibility. Few patients show symptoms throughout childhood, adolescence, and adulthood. Risk factors for this might be genetics, family history of asthma and atopy, infections early in life, allergic diseases, and lung function deficits. In turn, a large proportion of children with asthma lose their symptoms during school age and adolescence. This improved prognosis, which might also reflect a better treatment response, is associated with being male and with milder and less allergic disease. Importantly, whether clinical remission of symptoms equals the disappearance of underlying pathology is unknown. In fact, airway hyper-responsiveness and airway inflammation might remain despite the absence of overt symptoms. Additionally, a new-onset of asthma symptoms is apparent in adulthood, especially in women and in the case of impaired lung function. However, many patients do not remember childhood symptoms, which might reflect relapse rather than true initiation. Both relapse and adult-onset of asthma symptoms have been associated with allergic disease and sensitisation in addition to airway hyper-responsiveness. Thus, asthma symptoms beginning in adults might have originated in childhood. Equivocally, persistence into, relapse, and new-onset of symptoms in adulthood have all been related to active smoking. However, underlying mechanisms for the associations remain unclear, and future asthma research should therefore integrate standardised molecular approaches in identical ways in both paediatric and adult populations and in longitudinal studies.
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Affiliation(s)
- Oliver Fuchs
- Division of Paediatric Allergology, Dr von Hauner Children's Hospital, Ludwig-Maximilians-University, Munich, Germany; Comprehensive Pneumology Centre Munich (CPC-M), Munich, Germany; German Centre for Lung Research (DZL).
| | - Thomas Bahmer
- LungenClinic Grosshansdorf, Grosshansdorf, Germany; Airway Research Centre North (ARCN), Lubeck, Germany; ARCN, Kiel, Germany; ARCN, Grosshansdorf, Germany; German Centre for Lung Research (DZL)
| | - Klaus F Rabe
- LungenClinic Grosshansdorf, Grosshansdorf, Germany; Department of Medicine, Christian-Albrechts-University, Kiel, Germany; Airway Research Centre North (ARCN), Lubeck, Germany; ARCN, Kiel, Germany; ARCN, Grosshansdorf, Germany; German Centre for Lung Research (DZL)
| | - Erika von Mutius
- Division of Paediatric Allergology, Dr von Hauner Children's Hospital, Ludwig-Maximilians-University, Munich, Germany; Comprehensive Pneumology Centre Munich (CPC-M), Munich, Germany; German Centre for Lung Research (DZL)
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Lynch SJ, Sears MR, Hancox RJ. Thumb-Sucking, Nail-Biting, and Atopic Sensitization, Asthma, and Hay Fever. Pediatrics 2016; 138:peds.2016-0443. [PMID: 27401101 DOI: 10.1542/peds.2016-0443] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 05/11/2016] [Indexed: 11/24/2022] Open
Abstract
BACKGROUND The hygiene hypothesis suggests that early-life exposure to microbial organisms reduces the risk of developing allergies. Thumb-sucking and nail-biting are common childhood habits that may increase microbial exposures. We tested the hypothesis that children who suck their thumbs or bite their nails have a lower risk of developing atopy, asthma, and hay fever in a population-based birth cohort followed to adulthood. METHODS Parents reported children's thumb-sucking and nail-biting habits when their children were ages 5, 7, 9, and 11 years. Atopic sensitization was defined as a positive skin-prick test (≥2-mm weal) to ≥1 common allergen at 13 and 32 years. Associations between thumb-sucking and nail-biting in childhood, and atopic sensitization, asthma, and hay fever at these ages were assessed by using logistic regression with adjustments for sex and other potential confounding factors: parental atopy, breastfeeding, pet ownership, household crowding, socioeconomic status, and parental smoking. RESULTS Thirty-one percent of children were frequent thumb-suckers or nail-biters at ≥1 of the ages. These children had a lower risk of atopic sensitization at age 13 years (odds ratio 0.67, 95% confidence interval 0.48-0.92, P = .013) and age 32 years (odds ratio 0.61, 95% confidence interval 0.46-0.81, P = .001). These associations persisted when adjusted for multiple confounding factors. Children who had both habits had a lower risk of atopic sensitization than those who had only 1. No associations were found for nail-biting, thumb-sucking, and asthma or hay fever at either age. CONCLUSIONS Children who suck their thumbs or bite their nails are less likely to have atopic sensitization in childhood and adulthood.
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Affiliation(s)
- Stephanie J Lynch
- Department of Preventive and Social Medicine, Dunedin School of Medicine, University of Otago, Dunedin, New Zealand; and
| | - Malcolm R Sears
- Firestone Institute for Respiratory Health, Michael de Groote School of Medicine, McMaster University and St Joseph's Healthcare, Hamilton, ON, Canada
| | - Robert J Hancox
- Department of Preventive and Social Medicine, Dunedin School of Medicine, University of Otago, Dunedin, New Zealand; and
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Claar DD, Larkin EK, Bastarache L, Blackwell TS, Loyd JE, Hartert TV, Denny JC, Kropski JA. A Phenome-Wide Association Study Identifies a Novel Asthma Risk Locus Near TERC. Am J Respir Crit Care Med 2016; 193:98-100. [PMID: 26720789 DOI: 10.1164/rccm.201507-1267le] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Affiliation(s)
- Dru D Claar
- 1 Vanderbilt University School of Medicine Nashville, Tennessee and
| | - Emma K Larkin
- 1 Vanderbilt University School of Medicine Nashville, Tennessee and
| | - Lisa Bastarache
- 1 Vanderbilt University School of Medicine Nashville, Tennessee and
| | - Timothy S Blackwell
- 1 Vanderbilt University School of Medicine Nashville, Tennessee and.,2 Department of Veteran Affairs Medical Center Nashville, Tennessee
| | - James E Loyd
- 1 Vanderbilt University School of Medicine Nashville, Tennessee and
| | - Tina V Hartert
- 1 Vanderbilt University School of Medicine Nashville, Tennessee and
| | - Joshua C Denny
- 1 Vanderbilt University School of Medicine Nashville, Tennessee and
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Thomson WM, Zeng J, Broadbent JM, Foster Page LA, Shalev I, Moffitt TE, Caspi A, Williams SM, Braithwaite AW, Robertson SP, Poulton R. Telomere length and periodontal attachment loss: a prospective cohort study. J Clin Periodontol 2016; 43:121-7. [PMID: 26713854 DOI: 10.1111/jcpe.12499] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/22/2015] [Indexed: 01/08/2023]
Abstract
AIM The aim of the study was to examine the association between telomere erosion and periodontitis in a long-standing prospective cohort study of New Zealand adults. Specific hypotheses tested were as follows: (i) that exposure to periodontitis at ages 26 and 38 was associated with accelerated leucocyte telomere erosion and (ii) that accelerated leucocyte telomere erosion was associated with higher rates of periodontitis by ages 26 and 38. MATERIALS AND METHODS Periodontal attachment loss data were collected at ages 26 and 38. Blood samples taken at the same ages were analysed to obtain estimates of leucocyte telomere length and erosion over a 12-year period. RESULTS Overall, the mean telomere length was reduced by 0.15 T/S ratio (adjusted) from age 26 to 38 among the 661 participants reported on here. During the same period, the mean attachment loss increased by 10%, after adjusting for sex, socio-economic status and smoking. Regression models showed that attachment loss did not predict telomere length, and that telomere erosion did not predict attachment loss. CONCLUSIONS Although both periodontitis and telomere length are age-dependent, they do not appear to be linked, suggesting that determination of leucocyte telomere length may not be a promising clinical approach at this age for identifying people who are at risk for periodontitis.
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Affiliation(s)
- William Murray Thomson
- Sir John Walsh Research Institute, School of Dentistry, The University of Otago, Dunedin, New Zealand
| | - Jiaxu Zeng
- Department of Preventive and Social Medicine, Dunedin School of Medicine, The University of Otago, Dunedin, New Zealand
| | - Jonathan M Broadbent
- Sir John Walsh Research Institute, School of Dentistry, The University of Otago, Dunedin, New Zealand
| | - Lyndie A Foster Page
- Sir John Walsh Research Institute, School of Dentistry, The University of Otago, Dunedin, New Zealand
| | - Idan Shalev
- Department of Biobehavioral Health, Pennsylvania State University, University Park, PA, USA
| | - Terrie E Moffitt
- Department of Psychology and Neuroscience, Duke University, Durham, NC, USA.,Department of Psychiatry and Behavioral Sciences, Duke University, Durham, NC, USA.,Social, Genetic, and Developmental Psychiatry Centre, Institute of Psychiatry, King's College, London, UK
| | - Avshalom Caspi
- Department of Psychology and Neuroscience, Duke University, Durham, NC, USA.,Department of Psychiatry and Behavioral Sciences, Duke University, Durham, NC, USA.,Social, Genetic, and Developmental Psychiatry Centre, Institute of Psychiatry, King's College, London, UK
| | - Sheila M Williams
- Department of Preventive and Social Medicine, Dunedin School of Medicine, The University of Otago, Dunedin, New Zealand
| | - Antony W Braithwaite
- Department of Pathology, School of Medicine, University of Otago, Dunedin, New Zealand
| | - Stephen P Robertson
- Department of Paediatrics and Child Health, Dunedin School of Medicine, University of Otago, Dunedin, New Zealand
| | - Richie Poulton
- Dunedin Multidisciplinary Health and Development Research Unit, Department of Psychology, University of Otago, Dunedin, New Zealand
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39
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Snetselaar R, van Moorsel CHM, Kazemier KM, van der Vis JJ, Zanen P, van Oosterhout MFM, Grutters JC. Telomere length in interstitial lung diseases. Chest 2016; 148:1011-1018. [PMID: 25973743 DOI: 10.1378/chest.14-3078] [Citation(s) in RCA: 85] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Interstitial lung disease (ILD) is a heterogeneous group of rare diseases that primarily affect the pulmonary interstitium. Studies have implicated a role for telomere length (TL) maintenance in ILD, particularly in idiopathic interstitial pneumonia (IIP). Here, we measure TL in a wide spectrum of sporadic and familial cohorts of ILD and compare TL between patient cohorts and control subjects. METHODS A multiplex quantitative polymerase chain reaction method was used to measure TL in 173 healthy subjects and 359 patients with various ILDs, including familial interstitial pneumonia (FIP). The FIP cohort was divided into patients carrying TERT mutations, patients carrying SFTPA2 or SFTPC mutations, and patients without a proven mutation (FIP-no mutation). RESULTS TL in all cases of ILD was significantly shorter compared with those of control subjects (P range: .038 to < .0001). Furthermore, TL in patients with idiopathic pulmonary fibrosis (IPF) was significantly shorter than in patients with other IIPs (P = .002) and in patients with sarcoidosis (P < .0001). Within the FIP cohort, patients in the FIP-telomerase reverse transcriptase (TERT) group had the shortest telomeres (P < .0001), and those in the FIP-no mutation group had TL comparable to that of patients with IPF (P = .049). Remarkably, TL of patients with FIP-surfactant protein (SFTP) was significantly longer than in patients with IPF, but similar to that observed in patients with other sporadic IIPs. CONCLUSIONS The results show telomere shortening across all ILD diagnoses. The difference in TL between the FIP-TERT and FIP-SFTP groups indicates the distinction between acquired and innate telomere shortening. Short TL in the IPF and FIP-no mutation groups is indicative of an innate telomere-biology defect, while a stress-induced, acquired telomere shortening might be the underlying process for the other ILD diagnoses.
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Affiliation(s)
- Reinier Snetselaar
- Center of Interstitial Lung Diseases, Department of Pulmonology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Coline H M van Moorsel
- Center of Interstitial Lung Diseases, Department of Pulmonology, University Medical Center Utrecht, Utrecht, The Netherlands; Division of Heart and Lung, University Medical Center Utrecht, Utrecht, The Netherlands.
| | - Karin M Kazemier
- Center of Interstitial Lung Diseases, Department of Pulmonology, University Medical Center Utrecht, Utrecht, The Netherlands; Division of Heart and Lung, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Joanne J van der Vis
- Center of Interstitial Lung Diseases, Department of Pulmonology, University Medical Center Utrecht, Utrecht, The Netherlands; Department of Clinical Chemistry, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Pieter Zanen
- Center of Interstitial Lung Diseases, Department of Pulmonology, University Medical Center Utrecht, Utrecht, The Netherlands; Division of Heart and Lung, University Medical Center Utrecht, Utrecht, The Netherlands
| | | | - Jan C Grutters
- Center of Interstitial Lung Diseases, Department of Pulmonology, University Medical Center Utrecht, Utrecht, The Netherlands; Division of Heart and Lung, University Medical Center Utrecht, Utrecht, The Netherlands
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Affiliation(s)
- Tara F Carr
- Department of Internal Medicine, University of Arizona College of Medicine, Tucson, Arizona
| | - Monica Kraft
- Department of Internal Medicine, University of Arizona College of Medicine, Tucson, Arizona
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Adnot S, Amsellem V, Boyer L, Marcos E, Saker M, Houssaini A, Kebe K, Dagouassat M, Lipskaia L, Boczkowski J. Telomere Dysfunction and Cell Senescence in Chronic Lung Diseases: Therapeutic Potential. Pharmacol Ther 2015; 153:125-34. [DOI: 10.1016/j.pharmthera.2015.06.007] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2014] [Accepted: 06/15/2015] [Indexed: 12/27/2022]
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Poulton R, Moffitt TE, Silva PA. The Dunedin Multidisciplinary Health and Development Study: overview of the first 40 years, with an eye to the future. Soc Psychiatry Psychiatr Epidemiol 2015; 50:679-93. [PMID: 25835958 PMCID: PMC4412685 DOI: 10.1007/s00127-015-1048-8] [Citation(s) in RCA: 200] [Impact Index Per Article: 22.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/06/2014] [Accepted: 03/19/2015] [Indexed: 12/03/2022]
Abstract
The Dunedin Multidisciplinary Health and Development Study began more than four decades ago. Unusual at the time, it was founded as a multidisciplinary research enterprise, and was strongly supported by the Dunedin community, both professional and lay, in its early years. Seven research themes have evolved over the past 40 years focusing on mental health and neuro-cognition, cardiovascular risk, respiratory health, oral health, sexual and reproductive health, and psychosocial functioning. A seventh, more applied theme, seeks to maximise the value of the Study findings for New Zealand's indigenous people-Māori (or tangata whenua transl people of the land). The study has published over 1200 papers and reports to date, with almost 2/3 of these being in peer-reviewed journals. Here we provide an overview of the study, its history, leadership structure, scientific approach, operational foci, and some recent examples of work that illustrate the following: (a) the value of multidisciplinary data; (b) how the study is well positioned to address contemporary issues; and (c) how research can simultaneously address multiple audiences-from researchers and theoreticians to policy makers and practitioners. Near-future research plans are described, and we end by reflecting upon the core aspects of the study that portend future useful contributions.
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Affiliation(s)
- Richie Poulton
- Dunedin Multidisciplinary Health and Development Research Unit, Department of Psychology, University of Otago, Dunedin, New Zealand,
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Ridout SJ, Ridout KK, Kao HT, Carpenter LL, Philip NS, Tyrka AR, Price LH. Telomeres, early-life stress and mental illness. ADVANCES IN PSYCHOSOMATIC MEDICINE 2015; 34:92-108. [PMID: 25832516 DOI: 10.1159/000369088] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Telomeres are structures of tandem TTAGGG repeats that are found at the ends of chromosomes and preserve genomic DNA by serving as a disposable buffer to protect DNA termini during chromosome replication. In this process, the telomere itself shortens with each cell division and can consequently be thought of as a cellular 'clock', reflecting the age of a cell and the time until senescence. Telomere shortening and changes in the levels of telomerase, the enzyme that maintains telomeres, occur in the context of certain somatic diseases and in response to selected physical stressors. Emerging evidence indicates that telomeres shorten with exposure to psychosocial stress (including early-life stress) and perhaps in association with some psychiatric disorders. These discoveries suggest that telomere shortening might be a useful biomarker for the overall stress response of an organism to various pathogenic conditions. In this regard, telomeres and their response to both somatic and psychiatric illness could serve as a unifying stress-response biomarker that crosses the brain/body distinction that is often made in medicine. Prospective studies will help to clarify whether this biomarker has broad utility in psychiatry and medicine for the evaluation of responses to psychosocial stressors. The possibility that telomere shortening can be slowed or reversed by psychiatric and psychosocial interventions could represent an opportunity for developing novel preventative and therapeutic approaches.
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Affiliation(s)
- Samuel J Ridout
- Mood Disorders Research Program and Laboratory for Clinical and Translational Neuroscience, Butler Hospital, Providence, R.I., USA
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Guerra S. New asthma biomarkers: shorter telomeres, longer disease? Am J Respir Crit Care Med 2014; 190:356-8. [PMID: 25127300 DOI: 10.1164/rccm.201407-1248ed] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Affiliation(s)
- Stefano Guerra
- 1 Arizona Respiratory Center University of Arizona Tucson, Arizona and CREAL Centre Barcelona, Spain
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