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Fu M, Mei A, Min X, Yang H, Wu W, Zhong J, Li C, Chen J. Advancements in Cardiovascular Disease Research Affected by Smoking. Rev Cardiovasc Med 2024; 25:298. [PMID: 39228476 PMCID: PMC11367002 DOI: 10.31083/j.rcm2508298] [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: 12/05/2023] [Revised: 04/09/2024] [Accepted: 04/18/2024] [Indexed: 09/05/2024] Open
Abstract
The harmful substances in tobacco are widely recognized to exert a significant detrimental impact on human health, constituting one of the most substantial global public health threats to date. Tobacco usage also ranks among the principal contributors to cardiovascular ailments, with tobacco being attributed to up to 30% of cardiovascular disease-related deaths in various countries. Cardiovascular disease is influenced by many kinds of pathogenic factors, among them, tobacco usage has led to an increased year by year incidence of cardiovascular disease. Exploring the influencing factors of harmful substances in tobacco and achieving early prevention are important means to reduce the incidence of cardiovascular diseases and maintain health. This article provides a comprehensive review of the effects of smoking on health and cardiovascular diseases.
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Affiliation(s)
- Miaoxin Fu
- Sinopharm Dongfeng General Hospital (Hubei Clinical Research Center of Hypertension), Hubei Key Laboratory of Wudang Local Chinese Medicine Research, Hubei University of Medicine, 442000 Shiyan, Hubei, China
| | - Aihua Mei
- Sinopharm Dongfeng General Hospital (Hubei Clinical Research Center of Hypertension), Hubei Key Laboratory of Wudang Local Chinese Medicine Research, Hubei University of Medicine, 442000 Shiyan, Hubei, China
| | - Xinwen Min
- Sinopharm Dongfeng General Hospital (Hubei Clinical Research Center of Hypertension), Hubei Key Laboratory of Wudang Local Chinese Medicine Research, Hubei University of Medicine, 442000 Shiyan, Hubei, China
| | - Handong Yang
- Sinopharm Dongfeng General Hospital (Hubei Clinical Research Center of Hypertension), Hubei Key Laboratory of Wudang Local Chinese Medicine Research, Hubei University of Medicine, 442000 Shiyan, Hubei, China
| | - Wenwen Wu
- School of Public Health, Hubei University of Medicine, 442000 Shiyan, Hubei, China
| | - Jixin Zhong
- Department of Rheumatology and Immunology, Tongji Hospital, Huazhong University of Science and Technology, 430074 Wuhan, Hubei, China
| | - Chunlei Li
- Sinopharm Dongfeng General Hospital (Hubei Clinical Research Center of Hypertension), Hubei Key Laboratory of Wudang Local Chinese Medicine Research, Hubei University of Medicine, 442000 Shiyan, Hubei, China
| | - Jun Chen
- Sinopharm Dongfeng General Hospital (Hubei Clinical Research Center of Hypertension), Hubei Key Laboratory of Wudang Local Chinese Medicine Research, Hubei University of Medicine, 442000 Shiyan, Hubei, China
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Bourassa KJ, Sbarra DA. Trauma, adversity, and biological aging: behavioral mechanisms relevant to treatment and theory. Transl Psychiatry 2024; 14:285. [PMID: 38997260 PMCID: PMC11245531 DOI: 10.1038/s41398-024-03004-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Revised: 06/20/2024] [Accepted: 07/02/2024] [Indexed: 07/14/2024] Open
Abstract
Although stress and adversity are largely universal experiences, people exposed to greater hardship are at increased risk for negative health consequences. Recent studies identify accelerated biological aging as a mechanism that could explain how trauma and adversity gives rise to poor health, and advances in this area of study coincide with technological innovations in the measurement of biological aging, particularly epigenetic profiles consistent with accelerated aging derived from DNA methylation. In this review, we provide an overview of the current literature examining how adversity might accelerate biological aging, with a specific focus on social and health behaviors. The most extensive evidence in this area suggests that health-compromising behaviors, particularly smoking, may partially explain the association between adversity and accelerated aging. Although there is relatively less published support for the role of social behaviors, emerging evidence points to the importance of social connection as a mechanism for future study. Our review highlights the need to determine the extent to which the associations from adversity to accelerated aging are consistent with causal processes. As we consider these questions, the review emphasizes methodological approaches from the causal inference literature that can help deepen our understanding of how stress and trauma might result in poor health. The use of these methodologies will help provide evidence as to which behavioral interventions might slow aging and improve health, particularly among populations that more often experience adversity and trauma.
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Affiliation(s)
- Kyle J Bourassa
- VA Mid-Atlantic Mental Illness Research, Education and Clinical Center, Durham VA Health Care System, Durham, NC, USA.
- Geriatric Research, Education, and Clinical Center, Durham Veteran Affairs (VA) Health Care System, Durham, NC, USA.
- Center for the Study of Aging and Human Development, Duke University Medical Center, Durham, NC, USA.
| | - David A Sbarra
- Department of Psychology, University of Arizona, Tucson, AZ, USA
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Chen M, Wang Z, Xu H, Teng P, Li W, Ma L. Association between modifiable lifestyle factors and telomere length: a univariable and multivariable Mendelian randomization study. J Transl Med 2024; 22:160. [PMID: 38365769 PMCID: PMC10870665 DOI: 10.1186/s12967-024-04956-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2023] [Accepted: 02/05/2024] [Indexed: 02/18/2024] Open
Abstract
BACKGROUND Telomere length has long been recognized as a valuable biomarker of aging and is inversely correlated with chronological age. Various lifestyle factors have been implicated in telomere shortening or preservation; however, the association between lifestyle factors and telomere length remains controversial. To address this issue, we conducted a Mendelian randomization (MR) analysis to investigate the potential causal associations between multiple lifestyle factors and telomere length. METHODS Independent genetic variants strongly associated with lifestyle factors (tobacco smoking, sleep duration, insomnia, and physical activity) were selected as instrumental variables from corresponding genome-wide association studies (GWASs). Summary-level data for telomere length was obtained from a GWAS comprising 472,174 European ancestries. Univariable and multivariable MR analyses were performed to assess the relationships. RESULTS The genetic liability to lifetime smoking was robustly associated with shorter telomere length (odd ratio [OR]: 0.882; 95% confidence interval [CI]: 0.847-0.918). Genetically predicted insomnia was also linked to shorter telomere length (OR: 0.972; 95% CI: 0.959-0.985), while no significant association was observed between sleep duration and telomere length. Furthermore, a suggestive association was found between moderate-to-vigorous physical activity and longer telomere length (OR: 1.680; 95% CI: 1.115-2.531). In multivariable MR analyses, adjusting for potential mediators such as body mass index, type 2 diabetes, alcohol consumption, and alcohol use disorder, the associations of lifetime smoking and insomnia with telomere length remained robust. CONCLUSION Our findings suggest that smoking and insomnia may contribute to telomere shortening, while physical activity may play a role in telomere length maintenance. These findings underscore the importance of managing positive risk factors and adopting a healthy lifestyle to promote telomere health.
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Affiliation(s)
- Miao Chen
- Department of Cardiovascular Surgery, the First Affiliated Hospital of Zhejiang University School of Medicine, Number 79 Qingchun Road, Hangzhou, China
| | - Zhen Wang
- Department of Cardiovascular Surgery, the First Affiliated Hospital of Zhejiang University School of Medicine, Number 79 Qingchun Road, Hangzhou, China
| | - Hongfei Xu
- Department of Cardiovascular Surgery, the First Affiliated Hospital of Zhejiang University School of Medicine, Number 79 Qingchun Road, Hangzhou, China
| | - Peng Teng
- Department of Cardiovascular Surgery, the First Affiliated Hospital of Zhejiang University School of Medicine, Number 79 Qingchun Road, Hangzhou, China
| | - Weidong Li
- Department of Cardiovascular Surgery, the First Affiliated Hospital of Zhejiang University School of Medicine, Number 79 Qingchun Road, Hangzhou, China
| | - Liang Ma
- Department of Cardiovascular Surgery, the First Affiliated Hospital of Zhejiang University School of Medicine, Number 79 Qingchun Road, Hangzhou, China.
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Frey A, Lunding LP, Wegmann M. The Dual Role of the Airway Epithelium in Asthma: Active Barrier and Regulator of Inflammation. Cells 2023; 12:2208. [PMID: 37759430 PMCID: PMC10526792 DOI: 10.3390/cells12182208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Revised: 09/01/2023] [Accepted: 09/03/2023] [Indexed: 09/29/2023] Open
Abstract
Chronic airway inflammation is the cornerstone on which bronchial asthma arises, and in turn, chronic inflammation arises from a complex interplay between environmental factors such as allergens and pathogens and immune cells as well as structural cells constituting the airway mucosa. Airway epithelial cells (AECs) are at the center of these processes. On the one hand, they represent the borderline separating the body from its environment in order to keep inner homeostasis. The airway epithelium forms a multi-tiered, self-cleaning barrier that involves an unstirred, discontinuous mucous layer, the dense and rigid mesh of the glycocalyx, and the cellular layer itself, consisting of multiple, densely interconnected cell types. On the other hand, the airway epithelium represents an immunologically highly active tissue once its barrier has been penetrated: AECs play a pivotal role in releasing protective immunoglobulin A. They express a broad spectrum of pattern recognition receptors, enabling them to react to environmental stressors that overcome the mucosal barrier. By releasing alarmins-proinflammatory and regulatory cytokines-AECs play an active role in the formation, strategic orientation, and control of the subsequent defense reaction. Consequently, the airway epithelium is of vital importance to chronic inflammatory diseases, such as asthma.
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Affiliation(s)
- Andreas Frey
- Division of Mucosal Immunology and Diagnostics, Research Center Borstel, 23845 Borstel, Germany;
- Airway Research Center North (ARCN), German Center for Lung Research (DZL), 22927 Großhansdorf, Germany;
| | - Lars P. Lunding
- Airway Research Center North (ARCN), German Center for Lung Research (DZL), 22927 Großhansdorf, Germany;
- Division of Lung Immunology, Research Center Borstel, 23845 Borstel, Germany
| | - Michael Wegmann
- Airway Research Center North (ARCN), German Center for Lung Research (DZL), 22927 Großhansdorf, Germany;
- Division of Lung Immunology, Research Center Borstel, 23845 Borstel, Germany
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Niyatiwatchanchai N, Pothirat C, Chaiwong W, Liwsrisakun C, Phetsuk N, Duangjit P, Choomuang W. Short-term effects of air pollutant exposure on small airway dysfunction, spirometry, health-related quality of life, and inflammatory biomarkers in wildland firefighters: a pilot study. INTERNATIONAL JOURNAL OF ENVIRONMENTAL HEALTH RESEARCH 2023; 33:850-863. [PMID: 35440236 DOI: 10.1080/09603123.2022.2063263] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Accepted: 04/02/2022] [Indexed: 06/14/2023]
Abstract
Clinical Trials Registry: Study ID: TCTR20200828005.
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Affiliation(s)
- Nutchanok Niyatiwatchanchai
- Division of Pulmonary, Critical Care and Allergy, Department of Internal Medicine, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
| | - Chaicharn Pothirat
- Division of Pulmonary, Critical Care and Allergy, Department of Internal Medicine, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
| | - Warawut Chaiwong
- Division of Pulmonary, Critical Care and Allergy, Department of Internal Medicine, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
| | - Chalerm Liwsrisakun
- Division of Pulmonary, Critical Care and Allergy, Department of Internal Medicine, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
| | - Nittaya Phetsuk
- Division of Pulmonary, Critical Care and Allergy, Department of Internal Medicine, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
| | - Pilaiporn Duangjit
- Division of Pulmonary, Critical Care and Allergy, Department of Internal Medicine, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
| | - Woranoot Choomuang
- Division of Pulmonary, Critical Care and Allergy, Department of Internal Medicine, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
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Bateman G, Guo-Parke H, Rodgers AM, Linden D, Bailey M, Weldon S, Kidney JC, Taggart CC. Airway Epithelium Senescence as a Driving Mechanism in COPD Pathogenesis. Biomedicines 2023; 11:2072. [PMID: 37509711 PMCID: PMC10377597 DOI: 10.3390/biomedicines11072072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 07/19/2023] [Accepted: 07/20/2023] [Indexed: 07/30/2023] Open
Abstract
Cellular senescence is a state of permanent cell cycle arrest triggered by various intrinsic and extrinsic stressors. Cellular senescence results in impaired tissue repair and remodeling, loss of physiological integrity, organ dysfunction, and changes in the secretome. The systemic accumulation of senescence cells has been observed in many age-related diseases. Likewise, cellular senescence has been implicated as a risk factor and driving mechanism in chronic obstructive pulmonary disease (COPD) pathogenesis. Airway epithelium exhibits hallmark features of senescence in COPD including activation of the p53/p21WAF1/CIP1 and p16INK4A/RB pathways, leading to cell cycle arrest. Airway epithelial senescent cells secrete an array of inflammatory mediators, the so-called senescence-associated secretory phenotype (SASP), leading to a persistent low-grade chronic inflammation in COPD. SASP further promotes senescence in an autocrine and paracrine manner, potentially contributing to the onset and progression of COPD. In addition, cellular senescence in COPD airway epithelium is associated with telomere dysfunction, DNA damage, and oxidative stress. This review discusses the potential mechanisms of airway epithelial cell senescence in COPD, the impact of cellular senescence on the development and severity of the disease, and highlights potential targets for modulating cellular senescence in airway epithelium as a potential therapeutic approach in COPD.
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Affiliation(s)
- Georgia Bateman
- Airway Innate Immunity Research Group, Wellcome Wolfson Institute for Experimental Medicine, School of Medicine, Dentistry and Biomedical Sciences, Queens University Belfast, Belfast BT9 7AE, UK
| | - Hong Guo-Parke
- Airway Innate Immunity Research Group, Wellcome Wolfson Institute for Experimental Medicine, School of Medicine, Dentistry and Biomedical Sciences, Queens University Belfast, Belfast BT9 7AE, UK
| | - Aoife M Rodgers
- Airway Innate Immunity Research Group, Wellcome Wolfson Institute for Experimental Medicine, School of Medicine, Dentistry and Biomedical Sciences, Queens University Belfast, Belfast BT9 7AE, UK
| | - Dermot Linden
- Airway Innate Immunity Research Group, Wellcome Wolfson Institute for Experimental Medicine, School of Medicine, Dentistry and Biomedical Sciences, Queens University Belfast, Belfast BT9 7AE, UK
| | - Melanie Bailey
- Department of Respiratory Medicine, Mater Hospital Belfast, Belfast BT14 6AB, UK
| | - Sinéad Weldon
- Airway Innate Immunity Research Group, Wellcome Wolfson Institute for Experimental Medicine, School of Medicine, Dentistry and Biomedical Sciences, Queens University Belfast, Belfast BT9 7AE, UK
| | - Joseph C Kidney
- Department of Respiratory Medicine, Mater Hospital Belfast, Belfast BT14 6AB, UK
| | - Clifford C Taggart
- Airway Innate Immunity Research Group, Wellcome Wolfson Institute for Experimental Medicine, School of Medicine, Dentistry and Biomedical Sciences, Queens University Belfast, Belfast BT9 7AE, UK
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Galkin F, Kovalchuk O, Koldasbayeva D, Zhavoronkov A, Bischof E. Stress, diet, exercise: Common environmental factors and their impact on epigenetic age. Ageing Res Rev 2023; 88:101956. [PMID: 37211319 DOI: 10.1016/j.arr.2023.101956] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Revised: 05/13/2023] [Accepted: 05/15/2023] [Indexed: 05/23/2023]
Abstract
Epigenetic aging clocks have gained significant attention as a tool for predicting age-related health conditions in clinical and research settings. They have enabled geroscientists to study the underlying mechanisms of aging and assess the effectiveness of anti-aging therapies, including diet, exercise and environmental exposures. This review explores the effects of modifiable lifestyle factors' on the global DNA methylation landscape, as seen by aging clocks. We also discuss the underlying mechanisms through which these factors contribute to biological aging and provide comments on what these findings mean for people willing to build an evidence-based pro-longevity lifestyle.
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Affiliation(s)
| | - Olga Kovalchuk
- Department of Biological Sciences, University of Lethbridge, Canada
| | | | - Alex Zhavoronkov
- Deep Longevity, Hong Kong; Insilico Medicine, Hong Kong; Buck Institute for Research on Aging, Novato, CA, USA
| | - Evelyne Bischof
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Department of Oncology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200127, China; Shanghai University of Medicine and Health Sciences, Shanghai, China; Division of Cardiology, Department of Advanced Biomedical Sciences, Federico II University, Via S. Pansini, 580131, Naples, Italy
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8
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Sun C, Bai S, Liang Y, Liu D, Liao J, Chen Y, Zhao X, Wu B, Huang D, Chen M, Wu D. The role of Sirtuin 1 and its activators in age-related lung disease. Biomed Pharmacother 2023; 162:114573. [PMID: 37018986 DOI: 10.1016/j.biopha.2023.114573] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Revised: 03/10/2023] [Accepted: 03/21/2023] [Indexed: 04/05/2023] Open
Abstract
Aging is a major driving factor in lung diseases. Age-related lung disease is associated with downregulated expression of SIRT1, an NAD+-dependent deacetylase that regulates inflammation and stress resistance. SIRT1 acts by inducing the deacetylation of various substrates and regulates several mechanisms that relate to lung aging, such as genomic instability, lung stem cell exhaustion, mitochondrial dysfunction, telomere shortening, and immune senescence. Chinese herbal medicines have many biological activities, exerting anti-inflammatory, anti-oxidation, anti-tumor, and immune regulatory effects. Recent studies have confirmed that many Chinese herbs have the effect of activating SIRT1. Therefore, we reviewed the mechanism of SIRT1 in age-related lung disease and explored the potential roles of Chinese herbs as SIRT1 activators in the treatment of age-related lung disease.
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Zhang Y, Zhang H, Su X, Wang Y, Gao G, Wang X, Zhang T. Analysis of influencing factors and a predictive model of small airway dysfunction in adults. BMC Pulm Med 2023; 23:141. [PMID: 37098545 PMCID: PMC10131465 DOI: 10.1186/s12890-023-02416-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Accepted: 04/04/2023] [Indexed: 04/27/2023] Open
Abstract
BACKGROUND Small airway dysfunction (SAD) is a widespread but less typical clinical manifestation of respiratory dysfunction. In lung diseases, SAD can have a higher-than-expected impact on lung function. The aim of this study was to explore risk factors for SAD and to establish a predictive model. METHODS We included 1233 patients in the pulmonary function room of TangDu Hospital from June 2021 to December 2021. We divided the subjects into a small airway disorder group and a non-small airway disorder group, and all participants completed a questionnaire. We performed univariate and multivariate analyses to identify the risk factors for SAD. Multivariate logistic regression was performed to construct the nomogram. The performance of the nomogram was assessed and validated by the Area under roc curve (AUC), calibration curves, and Decision curve analysis (DCA). RESULTS One. The risk factors for small airway disorder were advanced age (OR = 7.772,95% CI 2.284-26.443), female sex (OR = 1.545,95% CI 1.103-2.164), family history of respiratory disease (OR = 1.508,95% CI 1.069-2.126), history of occupational dust exposure (OR = 1.723,95% CI 1.177-2.521), history of smoking (OR = 1.732,95% CI 1.231-2.436), history of pet exposure (OR = 1.499,95% CI 1.065-2.110), exposure to O3 (OR = 1.008,95% CI 1.003-1.013), chronic bronchitis (OR = 1.947,95% CI 1.376-2.753), emphysema (OR = 2.190,95% CI 1.355-3.539) and asthma (OR = 7.287,95% CI 3.546-14.973). 2. The AUCs of the nomogram were 0.691 in the training set and 0.716 in the validation set. Both nomograms demonstrated favourable clinical consistency. 3.There was a dose‒response relationship between cigarette smoking and SAD; however, quitting smoking did not reduce the risk of SAD. CONCLUSION Small airway disorders are associated with age, sex, family history of respiratory disease, occupational dust exposure, smoking history, history of pet exposure, exposure to O3, chronic bronchitis, emphysema, and asthma. The nomogram based on the above results can effectively used in the preliminary risk prediction.
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Affiliation(s)
- Yifan Zhang
- Department of Thoracic Surgery, Tangdu Hospital, Air Force Medical University, Xi'an, 710032, China
| | - Haihua Zhang
- Department of Thoracic Surgery, Tangdu Hospital, Air Force Medical University, Xi'an, 710032, China
| | - Xuan Su
- Department of Respiratory Medicine, Tangdu Hospital, Air Force Medical University, Xi'an, 710032, China
| | - Ying Wang
- Department of Respiratory Medicine, Tangdu Hospital, Air Force Medical University, Xi'an, 710032, China
| | - Guizhou Gao
- Department of Thoracic Surgery, Tangdu Hospital, Air Force Medical University, Xi'an, 710032, China
| | - Xiaodong Wang
- Department of Thoracic Surgery, Tangdu Hospital, Air Force Medical University, Xi'an, 710032, China
| | - Tao Zhang
- Department of Thoracic Surgery, Tangdu Hospital, Air Force Medical University, Xi'an, 710032, China.
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Iakovou E, Kourti M. A Comprehensive Overview of the Complex Role of Oxidative Stress in Aging, The Contributing Environmental Stressors and Emerging Antioxidant Therapeutic Interventions. Front Aging Neurosci 2022; 14:827900. [PMID: 35769600 PMCID: PMC9234325 DOI: 10.3389/fnagi.2022.827900] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Accepted: 05/10/2022] [Indexed: 12/15/2022] Open
Abstract
Introduction Aging is a normal, inevitable, irreversible, and progressive process which is driven by internal and external factors. Oxidative stress, that is the imbalance between prooxidant and antioxidant molecules favoring the first, plays a key role in the pathophysiology of aging and comprises one of the molecular mechanisms underlying age-related diseases. However, the oxidative stress theory of aging has not been successfully proven in all animal models studying lifespan, meaning that altering oxidative stress/antioxidant defense systems did not always lead to a prolonged lifespan, as expected. On the other hand, animal models of age-related pathological phenotypes showed a well-correlated relationship with the levels of prooxidant molecules. Therefore, it seems that oxidative stress plays a more complicated role than the one once believed and this role might be affected by the environment of each organism. Environmental factors such as UV radiation, air pollution, and an unbalanced diet, have also been implicated in the pathophysiology of aging and seem to initiate this process more rapidly and even at younger ages. Aim The purpose of this review is to elucidate the role of oxidative stress in the physiology of aging and the effect of certain environmental factors in initiating and sustaining this process. Understanding the pathophysiology of aging will contribute to the development of strategies to postpone this phenomenon. In addition, recent studies investigating ways to alter the antioxidant defense mechanisms in order to prevent aging will be presented. Conclusions Careful exposure to harmful environmental factors and the use of antioxidant supplements could potentially affect the biological processes driving aging and slow down the development of age-related diseases. Maybe a prolonged lifespan could not be achieved by this strategy alone, but a longer healthspan could also be a favorable target.
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Affiliation(s)
- Evripides Iakovou
- Department of Life Sciences, European University Cyprus, Nicosia, Cyprus
| | - Malamati Kourti
- Department of Life Sciences, European University Cyprus, Nicosia, Cyprus
- Angiogenesis and Cancer Drug Discovery Group, Basic and Translational Cancer Research Center, Department of Life Sciences, European University Cyprus, Nicosia, Cyprus
- *Correspondence: Malamati Kourti
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Rouatbi S. Aging, tobacco use and lung damages. LA TUNISIE MEDICALE 2022; 100:295-302. [PMID: 36155900 PMCID: PMC9477149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The main two functions of the lung are the respiratory functions, dependent on ventilatory mechanics and gas exchange, and the nonrespiratory functions such as metabolic, immunological, and endocrine ones. Lung aging is secondary to the age-dependent impairment of one or more of these functions. Tobacco use accelerates lung aging and touches biological, structural and respiratory and non-respiratory functions. These changes contribute to the development of chronic pulmonary diseases and predispose to pulmonary infections in older individuals. The knowledge of these changes is very useful for better management of elderly. Lung health in aging can be improved by strategies that slow the age-related decline in lung function by acting on the environmental parameters. It is also possible to improve lung development in children and to strengthen the lungs' resistance to environmental challenges and thus to extrinsic lung aging.
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Affiliation(s)
- Sonia Rouatbi
- 1. Physiology and functional explorations laboratory, Farhat Hached Hospital, Sousse, Tunisia,2. Physiology and functional explorations laboratory, Faculty of Medicine, Sousse, Tunisia,3. Research Laboraory of cardiac failure “LR12SP09”
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12
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Linli Z, Feng J, Zhao W, Guo S. Associations between smoking and accelerated brain ageing. Prog Neuropsychopharmacol Biol Psychiatry 2022; 113:110471. [PMID: 34740709 DOI: 10.1016/j.pnpbp.2021.110471] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Revised: 10/27/2021] [Accepted: 10/31/2021] [Indexed: 12/31/2022]
Abstract
Smoking accelerates the ageing of multiple organs. However, few studies have quantified the association between smoking, especially smoking cessation, and brain ageing. Using structural magnetic resonance imaging data from the UK Biobank (n = 33,293), a brain age predictor was trained using a machine learning technique in the non-smoker group (n = 14,667) and then tested in the smoker group (n = 18,626) to determine the relationships between BrainAge Gap (predicted age - true age) and smoking parameters. Further, we examined whether smoking was associated with poorer cognition and whether this relationship was mediated by brain age. The predictor achieved an appreciable performance in training data (r = 0.712, mean-absolute-error [MAE] = 4.220) and test data (r = 0.725, MAE = 4.160). On average, smokers showed a larger BrainAge Gap (+0.304 years, Cohens'd = 0.083) than controls, more explicitly, the extents vary depending on their smoking characteristic that active regular smokers had the largest BrainAge Gap (+1.190 years, Cohens'd = 0.321), and light smokers had a moderate BrainAge Gap (+0.478, Cohens'd = 0.129). The increased smoking amount was associated with a larger BrainAge Gap (β = 0.035, p = 1.72 × 10-20) while a longer duration of quitting smoking in ex-smokers was associated with a smaller BrainAge Gap (β = -0.015, p = 2.14 × 10-05). Furthermore, smoking was associated with poorer cognition, and this relationship was partially mediated by BrainAge Gap. The study provides insight into the association between smoking, brain ageing, and cognition, which provide more publicly acceptable propaganda against smoking.
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Affiliation(s)
- Zeqiang Linli
- MOE-LCSM, School of Mathematics and Statistics, Hunan Normal University, Changsha 410006, PR China; Key Laboratory of Applied Statistics and Data Science, Hunan Normal University, College of Hunan Province, Changsha 410006, PR China
| | - Jianfeng Feng
- Department of Computer Science, University of Warwick, Coventry CV4 7AL, UK; Centre for Computational Systems Biology, Fudan University, Shanghai 200433, PR China
| | - Wei Zhao
- MOE-LCSM, School of Mathematics and Statistics, Hunan Normal University, Changsha 410006, PR China; Key Laboratory of Applied Statistics and Data Science, Hunan Normal University, College of Hunan Province, Changsha 410006, PR China.
| | - Shuixia Guo
- MOE-LCSM, School of Mathematics and Statistics, Hunan Normal University, Changsha 410006, PR China; Key Laboratory of Applied Statistics and Data Science, Hunan Normal University, College of Hunan Province, Changsha 410006, PR China.
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Effect of Physical Activity, Smoking, and Sleep on Telomere Length: A Systematic Review of Observational and Intervention Studies. J Clin Med 2021; 11:jcm11010076. [PMID: 35011817 PMCID: PMC8745211 DOI: 10.3390/jcm11010076] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2021] [Revised: 12/14/2021] [Accepted: 12/21/2021] [Indexed: 12/12/2022] Open
Abstract
Aging is a risk factor for several pathologies, restricting one’s health span, and promoting chronic diseases (e.g., cardiovascular and neurodegenerative diseases), as well as cancer. Telomeres are regions of repetitive DNA located at chromosomal ends. Telomere length has been inversely associated with chronological age and has been considered, for a long time, a good biomarker of aging. Several lifestyle factors have been linked with telomere shortening or maintenance. However, the consistency of results is hampered by some methodological issues, including study design, sample size, measurement approaches, and population characteristics, among others. Therefore, we aimed to systematically review the current literature on the effects of three relevant lifestyle factors on telomere length in human adults: physical activity, smoking, and sleep. We conducted a qualitative systematic review of observational and intervention studies using the Preferred Reporting Item for Systematic Reviews and Meta-Analysis (PRISMA) guidelines. The systematic literature search covered articles published in MEDLINE and EMBASE databases (from 2010 to 2020). A total of 1400 studies were identified; 83 were included after quality control. Although fewer sedentary activities, optimal sleep habits, and non- or ex-smoker status have been associated with less telomere shortening, several methodological issues were detected, including the need for more targeted interventions and standardized protocols to better understand how physical activity and sleep can impact telomere length and aging. We discuss the main findings and current limitations to gain more insights into the influence of these lifestyle factors on the healthy aging process.
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Environmental Exposures and Lung Aging: Molecular Mechanisms and Implications for Improving Respiratory Health. Curr Environ Health Rep 2021; 8:281-293. [PMID: 34735706 PMCID: PMC8567983 DOI: 10.1007/s40572-021-00328-2] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
PURPOSE OF REVIEW Inhaled environmental exposures cause over 12 million deaths per year worldwide. Despite localized efforts to reduce environmental exposures, tobacco smoking and air pollution remain the urgent public health challenges that are contributing to the growing prevalence of respiratory diseases. The purpose of this review is to describe the mechanisms through which inhaled environmental exposures accelerate lung aging and cause overt lung disease. RECENT FINDINGS Environmental exposures related to fossil fuel and tobacco combustion and occupational exposures related to silica and coal mining generate oxidative stress and inflammation in the lungs. Sustained oxidative stress causes DNA damage, epigenetic instability, mitochondrial dysfunction, and cell cycle arrest in key progenitor cells in the lung. As a result, critical repair mechanisms are impaired, leading to premature destruction of the lung parenchyma. Inhaled environmental exposures accelerate lung aging by injuring the lungs and damaging the cells responsible for wound healing. Interventions that minimize exposure to noxious antigens are critical to improve lung health, and novel research is required to expand our knowledge of therapies that may slow or prevent premature lung aging.
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Mastalerz M, Dick E, Chakraborty AA, Hennen E, Schamberger AC, Schröppel A, Lindner M, Hatz R, Behr J, Hilgendorff A, Schmid O, Staab-Weijnitz CA. Validation of in vitro models for smoke exposure of primary human bronchial epithelial cells. Am J Physiol Lung Cell Mol Physiol 2021; 322:L129-L148. [PMID: 34668416 DOI: 10.1152/ajplung.00091.2021] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
RATIONALE The bronchial epithelium is constantly challenged by inhalative insults including cigarette smoke (CS), a key risk factor for lung disease. In vitro exposure of bronchial epithelial cells using CS extract (CSE) is a widespread alternative to whole CS (wCS) exposure. However, CSE exposure protocols vary considerably between studies, precluding direct comparison of applied doses. Moreover, they are rarely validated in terms of physiological response in vivo and the relevance of the findings is often unclear. METHODS We tested six different exposure settings in primary human bronchial epithelial cells (phBECs), including five CSE protocols in comparison with wCS exposure. We quantified cell-delivered dose and directly compared all exposures using expression analysis of 10 well-established smoke-induced genes in bronchial epithelial cells. CSE exposure of phBECs was varied in terms of differentiation state, exposure route, duration of exposure, and dose. Gene expression was assessed by quantitative Real-Time PCR (qPCR) and Western Blot analysis. Cell type-specific expression of smoke-induced genes was analyzed by immunofluorescent analysis. RESULTS Three surprisingly dissimilar exposure types, namely chronic CSE treatment of differentiating phBECs, acute CSE treatment of submerged basal phBECs, and wCS exposure of differentiated phBECs performed best, resulting in significant upregulation of seven (chronic CSE) and six (acute wCS, acute submerged CSE exposure) out of 10 genes. Acute apical or basolateral exposure of differentiated phBECs with CSE was much less effective despite similar doses used. CONCLUSIONS Our findings provide guidance for the design of human in vitro CS exposure models in experimental and translational lung research.
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Affiliation(s)
- Michal Mastalerz
- Institute of Lung Biology and Disease and Comprehensive Pneumology Center with the CPC-M bioArchive, Helmholtz Zentrum München, Member of the German Center for Lung Research (DZL), Munich, Germany
| | - Elisabeth Dick
- Institute of Lung Biology and Disease and Comprehensive Pneumology Center with the CPC-M bioArchive, Helmholtz Zentrum München, Member of the German Center for Lung Research (DZL), Munich, Germany
| | - Ashesh Anjankumar Chakraborty
- Institute of Lung Biology and Disease and Comprehensive Pneumology Center with the CPC-M bioArchive, Helmholtz Zentrum München, Member of the German Center for Lung Research (DZL), Munich, Germany
| | - Elisabeth Hennen
- Institute of Lung Biology and Disease and Comprehensive Pneumology Center with the CPC-M bioArchive, Helmholtz Zentrum München, Member of the German Center for Lung Research (DZL), Munich, Germany
| | - Andrea C Schamberger
- Institute of Lung Biology and Disease and Comprehensive Pneumology Center with the CPC-M bioArchive, Helmholtz Zentrum München, Member of the German Center for Lung Research (DZL), Munich, Germany
| | - Andreas Schröppel
- Institute of Lung Biology and Disease and Comprehensive Pneumology Center with the CPC-M bioArchive, Helmholtz Zentrum München, Member of the German Center for Lung Research (DZL), Munich, Germany
| | | | - Rudolf Hatz
- Thoraxchirurgisches Zentrum, Klinik für Allgemeine, Viszeral-, Transplantations-, Gefäß- und Thoraxchirurgie, Klinikum Großhadern, Ludwig-Maximilians-Universität (LMU), Munich, Germany
| | - Jürgen Behr
- Medizinische Klinik und Poliklinik V, Klinikum der Ludwig-Maximilians-Universität (LMU), Munich, Germany, Member of the German Center for Lung Research (DZL)
| | - Anne Hilgendorff
- Institute of Lung Biology and Disease and Comprehensive Pneumology Center with the CPC-M bioArchive, Helmholtz Zentrum München, Member of the German Center for Lung Research (DZL), Munich, Germany
| | - Otmar Schmid
- Institute of Lung Biology and Disease and Comprehensive Pneumology Center with the CPC-M bioArchive, Helmholtz Zentrum München, Member of the German Center for Lung Research (DZL), Munich, Germany
| | - Claudia A Staab-Weijnitz
- Institute of Lung Biology and Disease and Comprehensive Pneumology Center with the CPC-M bioArchive, Helmholtz Zentrum München, Member of the German Center for Lung Research (DZL), Munich, Germany
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16
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Poussin C, van der Toorn M, Scheuner S, Piault R, Kondylis A, Savioz R, Dulize R, Peric D, Guedj E, Maranzano F, Merg C, Morelli M, Egesipe AL, Johne S, Majeed S, Pak C, Schneider T, Schlage WK, Ivanov NV, Peitsch MC, Hoeng J. Systems toxicology study reveals reduced impact of heated tobacco product aerosol extract relative to cigarette smoke on premature aging and exacerbation effects in aged aortic cells in vitro. Arch Toxicol 2021; 95:3341-3359. [PMID: 34313809 PMCID: PMC8448694 DOI: 10.1007/s00204-021-03123-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Accepted: 07/15/2021] [Indexed: 12/17/2022]
Abstract
Aging and smoking are major risk factors for cardiovascular diseases (CVD). Our in vitro study compared, in the context of aging, the effects of the aerosol of Tobacco Heating System 2.2 (THS; an electrically heated tobacco product) and 3R4F reference cigarette smoke (CS) on processes that contribute to vascular pathomechanisms leading to CVD. Young and old human aortic smooth muscle cells (HAoSMC) were exposed to various concentrations of aqueous extracts (AE) from 3R4F CS [0.014-0.22 puffs/mL] or THS aerosol [0.11-1.76 puffs/mL] for 24 h. Key markers were measured by high-content imaging, transcriptomics profiling and multianalyte profiling. In our study, in vitro aging increased senescence, DNA damage, and inflammation and decreased proliferation in the HAoSMCs. At higher concentrations of 3R4F AE, young HAoSMCs behaved similarly to aged cells, while old HAoSMCs showed additional DNA damage and apoptosis effects. At 3R4F AE concentrations with the maximum effect, the THS AE showed no significant effect in young or old HAoSMCs. It required an approximately ten-fold higher concentration of THS AE to induce effects similar to those observed with 3R4F. These effects were independent of nicotine, which did not show a significant effect on HAoSMCs at any tested concentration. Our results show that 3R4F AE accelerates aging in young HAoSMCs and exacerbates the aging effect in old HAoSMCs in vitro, consistent with CS-related contributions to the risk of CVD. Relative to 3R4F AE, the THS AE showed a significantly reduced impact on HAoSMCs, suggesting its lower risk for vascular SMC-associated pathomechanisms leading to CVD.
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Affiliation(s)
- Carine Poussin
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, CH-2000, Neuchâtel, Switzerland.
| | - Marco van der Toorn
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, CH-2000, Neuchâtel, Switzerland
| | - Sophie Scheuner
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, CH-2000, Neuchâtel, Switzerland
| | - Romain Piault
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, CH-2000, Neuchâtel, Switzerland
| | - Athanasios Kondylis
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, CH-2000, Neuchâtel, Switzerland
| | - Rebecca Savioz
- Consultants in Science Sàrl, Biopole, Route de la Corniche 4, 1066, Epalinges, Switzerland
| | - Rémi Dulize
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, CH-2000, Neuchâtel, Switzerland
| | - Dariusz Peric
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, CH-2000, Neuchâtel, Switzerland
| | - Emmanuel Guedj
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, CH-2000, Neuchâtel, Switzerland
| | - Fabio Maranzano
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, CH-2000, Neuchâtel, Switzerland
| | - Celine Merg
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, CH-2000, Neuchâtel, Switzerland
| | - Moran Morelli
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, CH-2000, Neuchâtel, Switzerland
| | - Anne-Laure Egesipe
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, CH-2000, Neuchâtel, Switzerland
| | - Stéphanie Johne
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, CH-2000, Neuchâtel, Switzerland
| | - Shoaib Majeed
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, CH-2000, Neuchâtel, Switzerland
| | - Claudius Pak
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, CH-2000, Neuchâtel, Switzerland
| | - Thomas Schneider
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, CH-2000, Neuchâtel, Switzerland
| | - Walter K Schlage
- Biology Consultant, Max-Baermann-Str. 21, 51429, Bergisch Gladbach, Germany
| | - Nikolai V Ivanov
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, CH-2000, Neuchâtel, Switzerland
| | - Manuel C Peitsch
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, CH-2000, Neuchâtel, Switzerland
| | - Julia Hoeng
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, CH-2000, Neuchâtel, Switzerland
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Abstract
Autophagy is an evolutionarily conserved process where long-lived and damaged organelles are degraded. Autophagy has been widely associated with several ageing-process as well in diseases such as neurodegeneration, cancer and fibrosis, and is now being utilised as a target in these diseases. Idiopathic pulmonary fibrosis (IPF) is a progressive, interstitial lung disease with limited treatment options available. It is characterised by abnormal extracellular matrix (ECM) deposition by activated myofibroblasts. It is understood that repetitive micro-injuries to aged-alveolar epithelium combined with genetic factors drive the disease. Several groups have demonstrated that autophagy is altered in IPF although whether autophagy has a protective effect or not is yet to be determined. Autophagy has also been shown to influence many other processes including epithelial-mesenchymal transition (EMT) and endothelial-mesenchymal transition (EndMT) which are known to be key in the pathogenesis of IPF. In this review, we summarise the findings of evidence of altered autophagy in IPF lungs, as well as examine its roles within lung fibrosis. Given these findings, together with the growing use of autophagy manipulation in a clinical setting, this is an exciting area for further research in the study of lung fibrosis.
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18
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Xia X, Wang Y, Yu Z, Chen J, Han JDJ. Assessing the rate of aging to monitor aging itself. Ageing Res Rev 2021; 69:101350. [PMID: 33940202 DOI: 10.1016/j.arr.2021.101350] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2020] [Revised: 04/05/2021] [Accepted: 04/26/2021] [Indexed: 12/22/2022]
Abstract
Healthy aging is the prime goal of aging research and interventions. Healthy aging or not can be quantified by biological aging rates estimated by aging clocks. Generation and accumulation of large scale high-dimensional biological data together with maturation of artificial intelligence among other machine learning techniques, have enabled and spurred the rapid development of various aging rate estimators (aging clocks). Here we review the data sources and compare the algorithms of recent human aging clocks, and the applications of these clocks in both researches and daily life. We envision that not only more and multiscale data on cross-sectional data will add momentum to the aging clock development, new longitudinal and interventional data will further raise the aging clock development to the next level to be trained by true biological age such as morbidity and mortality age.
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19
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Zhao S, Lin C, Yang T, Qian X, Lu J, Cheng J. Expression of long non-coding RNA LUCAT1 in patients with chronic obstructive pulmonary disease and its potential functions in regulating cigarette smoke extract-induced 16HBE cell proliferation and apoptosis. J Clin Lab Anal 2021; 35:e23823. [PMID: 34125980 PMCID: PMC8274995 DOI: 10.1002/jcla.23823] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Revised: 03/26/2021] [Accepted: 04/10/2021] [Indexed: 01/08/2023] Open
Abstract
BACKGROUND Chronic obstructive pulmonary disease (COPD), characterized by persistent airflow limitation, was a disease mediated by a combination of inflammatory factors, immune cells, and immune mediators. COPD was an inflammatory and autoimmune disease involving T-lymphocytes triggered by cigarette smoke and other factors that progressively affected the bronchi, lung parenchyma, and pulmonary blood vessels. LncRNAs were reported to be implicated in COPD pathogenesis and development. METHODS Non-smokers, smokers (non-COPD), and COPD patients were randomly selected in an established COPD surveillance cohort. Demographic and clinical information of all subjects were collected. Pulmonary function was measured by post-bronchodilator testing. qRT-PCR and ELISA assays were performed to detect the expression levels of lncRNA LUCAT1, miR-181a-5p, and inflammatory cytokines. An in vitro exposure model was constructed using cigarette smoke extract (CSE)-induced human bronchial epithelial (16HBE) cells. The dual-luciferase reporter and RNA pull-down assays were used to detect the binding relationship between lncRNA LUCAT1 and miR-181a-5p; meanwhile, Spearman's correlation assay was used to verify the correlation between lncRNA LUCAT1 and miR-181a-5p. Afterward, the lncRNA LUCAT1 silencing plasmid was constructed and co-transfected with a miR-181a-5p inhibitor to evaluate the effects on CSE-induced 16HBE cell proliferation and apoptosis. Finally, a Western blot assay was utilized to determine the mechanism of lncRNA LUCAT1/miR-181a-5p/Wnt/β-catenin axis in COPD. RESULTS LncRNA LUCAT1 was upregulated in the serums of COPD patients. Correlation analysis further confirmed the strong correlation between LUCAT1 expression and inflammatory cytokines IL-1β, IL-6, and TNF-α. Receiver operating characteristic (ROC) analysis verified the potential of LUCAT1 in COPD diagnosis. After treatment with CSE, LUCAT1 was significantly increased while its target miR-181a-5p was decreased in 16HBE cells. Cell proliferation and apoptosis assays showed that LUCAT1 silencing alleviated CSE's effects on 16HBE cell proliferation and apoptosis. Mechanically, rescue assays demonstrated that miR-181a-5p inhibition could partially counteract the impact of LUCAT1 on COPD progression through the Wnt/β-catenin pathway. CONCLUSIONS LncRNA LUCAT1 may be a valuable indicator for differentiating COPD. Moreover, LncRNA LUCAT1/miR-181-5p/Wnt/β-catenin axis behaved as a critical role in COPD development, shedding new sights for clinical treatment.
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Affiliation(s)
- Shan Zhao
- Department of Clinical Laboratory, Affiliated Yixing People's Hospital, Jiangsu University, Wuxi, China
| | - Chunyan Lin
- Department of Blood Transfusion, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Tao Yang
- Department of Clinical Laboratory, Affiliated Yixing People's Hospital, Jiangsu University, Wuxi, China
| | - Xiaoyu Qian
- Department of Clinical Laboratory, Affiliated Yixing People's Hospital, Jiangsu University, Wuxi, China
| | - Junjie Lu
- Department of Critical Care Medicine, Affiliated Yixing People's Hospital, Jiangsu University, Wuxi, China
| | - Jing Cheng
- Department of Blood Transfusion, The First Affiliated Hospital of Soochow University, Suzhou, China
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20
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Palacios-Pedrero MÁ, Osterhaus ADME, Becker T, Elbahesh H, Rimmelzwaan GF, Saletti G. Aging and Options to Halt Declining Immunity to Virus Infections. Front Immunol 2021; 12:681449. [PMID: 34054872 PMCID: PMC8149791 DOI: 10.3389/fimmu.2021.681449] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Accepted: 04/26/2021] [Indexed: 12/15/2022] Open
Abstract
Immunosenescence is a process associated with aging that leads to dysregulation of cells of innate and adaptive immunity, which may become dysfunctional. Consequently, older adults show increased severity of viral and bacterial infections and impaired responses to vaccinations. A better understanding of the process of immunosenescence will aid the development of novel strategies to boost the immune system in older adults. In this review, we focus on major alterations of the immune system triggered by aging, and address the effect of chronic viral infections, effectiveness of vaccination of older adults and strategies to improve immune function in this vulnerable age group.
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Affiliation(s)
| | - Albert D M E Osterhaus
- Research Center for Emerging Infections and Zoonoses, University of Veterinary Medicine Hannover, Hannover, Germany
| | - Tanja Becker
- Research Center for Emerging Infections and Zoonoses, University of Veterinary Medicine Hannover, Hannover, Germany
| | - Husni Elbahesh
- Research Center for Emerging Infections and Zoonoses, University of Veterinary Medicine Hannover, Hannover, Germany
| | - Guus F Rimmelzwaan
- Research Center for Emerging Infections and Zoonoses, University of Veterinary Medicine Hannover, Hannover, Germany
| | - Giulietta Saletti
- Research Center for Emerging Infections and Zoonoses, University of Veterinary Medicine Hannover, Hannover, Germany
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21
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van de Wetering C, Elko E, Berg M, Schiffers CHJ, Stylianidis V, van den Berge M, Nawijn MC, Wouters EFM, Janssen-Heininger YMW, Reynaert NL. Glutathione S-transferases and their implications in the lung diseases asthma and chronic obstructive pulmonary disease: Early life susceptibility? Redox Biol 2021; 43:101995. [PMID: 33979767 PMCID: PMC8131726 DOI: 10.1016/j.redox.2021.101995] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2020] [Revised: 04/23/2021] [Accepted: 04/24/2021] [Indexed: 01/01/2023] Open
Abstract
Our lungs are exposed daily to airborne pollutants, particulate matter, pathogens as well as lung allergens and irritants. Exposure to these substances can lead to inflammatory responses and may induce endogenous oxidant production, which can cause chronic inflammation, tissue damage and remodeling. Notably, the development of asthma and Chronic Obstructive Pulmonary Disease (COPD) is linked to the aforementioned irritants. Some inhaled foreign chemical compounds are rapidly absorbed and processed by phase I and II enzyme systems critical in the detoxification of xenobiotics including the glutathione-conjugating enzymes Glutathione S-transferases (GSTs). GSTs, and in particular genetic variants of GSTs that alter their activities, have been found to be implicated in the susceptibility to and progression of these lung diseases. Beyond their roles in phase II metabolism, evidence suggests that GSTs are also important mediators of normal lung growth. Therefore, the contribution of GSTs to the development of lung diseases in adults may already start in utero, and continues through infancy, childhood, and adult life. GSTs are also known to scavenge oxidants and affect signaling pathways by protein-protein interaction. Moreover, GSTs regulate reversible oxidative post-translational modifications of proteins, known as protein S-glutathionylation. Therefore, GSTs display an array of functions that impact the pathogenesis of asthma and COPD. In this review we will provide an overview of the specific functions of each class of mammalian cytosolic GSTs. This is followed by a comprehensive analysis of their expression profiles in the lung in healthy subjects, as well as alterations that have been described in (epithelial cells of) asthmatics and COPD patients. Particular emphasis is placed on the emerging evidence of the regulatory properties of GSTs beyond detoxification and their contribution to (un)healthy lungs throughout life. By providing a more thorough understanding, tailored therapeutic strategies can be designed to affect specific functions of particular GSTs.
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Affiliation(s)
- Cheryl van de Wetering
- Department of Respiratory Medicine, Maastricht University Medical Center+, Maastricht, the Netherlands; Department of Pathology and Laboratory Medicine, University of Vermont College of Medicine, Burlington, VT, USA
| | - Evan Elko
- Department of Pathology and Laboratory Medicine, University of Vermont College of Medicine, Burlington, VT, USA
| | - Marijn Berg
- Pathology and Medical Biology, GRIAC Research Institute, University of Groningen, University Medical Center Groningen (UMCG), Groningen, the Netherlands
| | - Caspar H J Schiffers
- Department of Respiratory Medicine, Maastricht University Medical Center+, Maastricht, the Netherlands; Department of Pathology and Laboratory Medicine, University of Vermont College of Medicine, Burlington, VT, USA
| | - Vasili Stylianidis
- Department of Respiratory Medicine, Maastricht University Medical Center+, Maastricht, the Netherlands
| | - Maarten van den Berge
- Pulmonology, GRIAC Research Institute, University of Groningen, University Medical Center Groningen (UMCG), Groningen, the Netherlands
| | - Martijn C Nawijn
- Pathology and Medical Biology, GRIAC Research Institute, University of Groningen, University Medical Center Groningen (UMCG), Groningen, the Netherlands
| | - Emiel F M Wouters
- Department of Respiratory Medicine, Maastricht University Medical Center+, Maastricht, the Netherlands; Ludwig Boltzmann Institute for Lung Health, Vienna, Austria
| | - Yvonne M W Janssen-Heininger
- Department of Pathology and Laboratory Medicine, University of Vermont College of Medicine, Burlington, VT, USA.
| | - Niki L Reynaert
- Department of Respiratory Medicine, Maastricht University Medical Center+, Maastricht, the Netherlands.
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22
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Rackova L, Mach M, Brnoliakova Z. An update in toxicology of ageing. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2021; 84:103611. [PMID: 33581363 DOI: 10.1016/j.etap.2021.103611] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Revised: 01/17/2021] [Accepted: 02/03/2021] [Indexed: 06/12/2023]
Abstract
The field of ageing research has been rapidly advancing in recent decades and it had provided insight into the complexity of ageing phenomenon. However, as the organism-environment interaction appears to significantly affect the organismal pace of ageing, the systematic approach for gerontogenic risk assessment of environmental factors has yet to be established. This puts demand on development of effective biomarker of ageing, as a relevant tool to quantify effects of gerontogenic exposures, contingent on multidisciplinary research approach. Here we review the current knowledge regarding the main endogenous gerontogenic pathways involved in acceleration of ageing through environmental exposures. These include inflammatory and oxidative stress-triggered processes, dysregulation of maintenance of cellular anabolism and catabolism and loss of protein homeostasis. The most effective biomarkers showing specificity and relevancy to ageing phenotypes are summarized, as well. The crucial part of this review was dedicated to the comprehensive overview of environmental gerontogens including various types of radiation, certain types of pesticides, heavy metals, drugs and addictive substances, unhealthy dietary patterns, and sedentary life as well as psychosocial stress. The reported effects in vitro and in vivo of both recognized and potential gerontogens are described with respect to the up-to-date knowledge in geroscience. Finally, hormetic and ageing decelerating effects of environmental factors are briefly discussed, as well.
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Affiliation(s)
- Lucia Rackova
- Institute of Experimental Pharmacology and Toxicology, Centre of Experimental Medicine, Slovak Academy of Sciences, Dubravska cesta 9, 841 04 Bratislava, Slovakia.
| | - Mojmir Mach
- Institute of Experimental Pharmacology and Toxicology, Centre of Experimental Medicine, Slovak Academy of Sciences, Dubravska cesta 9, 841 04 Bratislava, Slovakia
| | - Zuzana Brnoliakova
- Institute of Experimental Pharmacology and Toxicology, Centre of Experimental Medicine, Slovak Academy of Sciences, Dubravska cesta 9, 841 04 Bratislava, Slovakia
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23
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Caruso M, Distefano A, Emma R, Di Rosa M, Carota G, Rust S, Polosa R, Zuccarello P, Ferrante M, Raciti G, Li Volti G. Role of Cigarette Smoke on Angiotensin-Converting Enzyme-2 Protein Membrane Expression in Bronchial Epithelial Cells Using an Air-Liquid Interface Model. Front Pharmacol 2021; 12:652102. [PMID: 33859566 PMCID: PMC8042260 DOI: 10.3389/fphar.2021.652102] [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: 01/11/2021] [Accepted: 02/05/2021] [Indexed: 12/23/2022] Open
Abstract
Prevalence studies of current smoking, among hospitalized COVID-19 patients, demonstrated an unexpectedly low prevalence among patients with COVID-19. The aim of the present study was to evaluate the effect of smoke from cigarettes on ACE-2 in bronchial epithelial cells. Normal bronchial epithelial cells (H292) were exposed to smoke by an air-liquid-interface (ALI) system and ACE-2 membrane protein expression was evaluated after 24 h from exposure. Our transcriptomics data analysis showed a significant selective reduction of membrane ACE-2 expression (about 25%) following smoking exposure. Interestingly, we observed a positive direct correlation between ACE-2 reduction and nicotine delivery. Furthermore, by stratifying GSE52237 as a function of ACE-2 gene expression levels, we highlighted 1,012 genes related to ACE-2 in smokers and 855 in non-smokers. Furthermore, we showed that 161 genes involved in the endocytosis process were highlighted using the online pathway tool KEGG. Finally, 11 genes were in common between the ACE-2 pathway in smokers and the genes regulated during endocytosis, while 12 genes with non-smokers. Interestingly, six in non-smokers and four genes in smokers were closely involved during the viral internalization process. Our data may offer a pharmaceutical role of nicotine as potential treatment option in COVID-19.
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Affiliation(s)
- Massimo Caruso
- Department of Biomedical and Biotechnological Sciences, University of Catania, Catania, Italy.,Center of Excellence for the Acceleration of Harm Reduction (CoEAHR), University of Catania, Catania, Italy
| | - Alfio Distefano
- Department of Biomedical and Biotechnological Sciences, University of Catania, Catania, Italy
| | - Rosalia Emma
- Department of Biomedical and Biotechnological Sciences, University of Catania, Catania, Italy
| | - Michelino Di Rosa
- Department of Biomedical and Biotechnological Sciences, University of Catania, Catania, Italy
| | - Giuseppe Carota
- Department of Biomedical and Biotechnological Sciences, University of Catania, Catania, Italy
| | - Sonja Rust
- Center of Excellence for the Acceleration of Harm Reduction (CoEAHR), University of Catania, Catania, Italy
| | - Riccardo Polosa
- Center of Excellence for the Acceleration of Harm Reduction (CoEAHR), University of Catania, Catania, Italy.,Department of Clinical and Experimental Medicine, University of Catania, Catania, Italy
| | - Pietro Zuccarello
- Department of Medical, Surgical Sciences and Advanced Technologies "G.F. Ingrassia", University of Catania, Catania, Italy
| | - Margherita Ferrante
- Center of Excellence for the Acceleration of Harm Reduction (CoEAHR), University of Catania, Catania, Italy.,Department of Medical, Surgical Sciences and Advanced Technologies "G.F. Ingrassia", University of Catania, Catania, Italy
| | | | - Giovanni Li Volti
- Department of Biomedical and Biotechnological Sciences, University of Catania, Catania, Italy.,Center of Excellence for the Acceleration of Harm Reduction (CoEAHR), University of Catania, Catania, Italy
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24
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Yamamichi T, Ichinose J, Iwamoto N, Omura K, Ozawa H, Kondo Y, Hashimoto K, Matsuura Y, Nakao M, Okumura S, Mun M. Correlation Between Smoking Status and Short-term Outcome of Thoracoscopic Surgery for Lung Cancer. Ann Thorac Surg 2021; 113:459-465. [PMID: 33667462 DOI: 10.1016/j.athoracsur.2021.01.063] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Revised: 12/13/2020] [Accepted: 01/04/2021] [Indexed: 12/25/2022]
Abstract
BACKGROUND Smoking has a major role in the risk of postoperative pulmonary complications. This study aimed to elucidate the correlation between smoking status and pulmonary complications after thoracoscopic surgery for lung cancer. METHODS A total of 1751 patients who underwent thoracoscopic lobectomy or segmentectomy for lung cancer between April 2011 and March 2020 were assessed. The rate of pulmonary complications was evaluated according to smoking status and preoperative duration of smoking cessation. Univariate and multivariate logistic regression analyses were performed. RESULTS Pulmonary complications were observed in 50 patients (2.9%), whereas 3 (0.2%) died within 90 days of surgery. The rate of pulmonary complications was higher in smokers than in nonsmokers (4.6% vs 0.9%; P < .001), and smoking history was an independent risk factor for pulmonary complications (odds ratio, 3.31; P = .007). The complication rate in patients with a cessation period of more than 2 months was significantly lower than that in patients who ceased smoking within 2 months (4.0% vs 8.5%; P = .043), but it was still higher than that in nonsmokers (4.0% vs 0.9%; P < .001). In the multivariable analysis for smokers, preoperative short-term smoking cessation within 2 months, male sex, histologic type, tumor size, and cardiopulmonary comorbidities were associated with pulmonary complications instead of pack-year smoking history. CONCLUSIONS Smoking habits and preoperative smoking cessation were independently associated with pulmonary complications after thoracoscopic surgery for lung cancer. A preoperative smoking cessation period of 2 months or more is preferable for reducing the risk of such complications.
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Affiliation(s)
- Takashi Yamamichi
- Department of Thoracic Surgical Oncology, Cancer Institute Hospital of the Japanese Foundation for Cancer Research, Tokyo, Japan
| | - Junji Ichinose
- Department of Thoracic Surgical Oncology, Cancer Institute Hospital of the Japanese Foundation for Cancer Research, Tokyo, Japan.
| | - Naoya Iwamoto
- Department of Thoracic Surgical Oncology, Cancer Institute Hospital of the Japanese Foundation for Cancer Research, Tokyo, Japan
| | - Kenshiro Omura
- Department of Thoracic Surgical Oncology, Cancer Institute Hospital of the Japanese Foundation for Cancer Research, Tokyo, Japan
| | - Hiroki Ozawa
- Department of Thoracic Surgical Oncology, Cancer Institute Hospital of the Japanese Foundation for Cancer Research, Tokyo, Japan
| | - Yasuto Kondo
- Department of Thoracic Surgical Oncology, Cancer Institute Hospital of the Japanese Foundation for Cancer Research, Tokyo, Japan
| | - Kohei Hashimoto
- Department of Thoracic Surgical Oncology, Cancer Institute Hospital of the Japanese Foundation for Cancer Research, Tokyo, Japan
| | - Yosuke Matsuura
- Department of Thoracic Surgical Oncology, Cancer Institute Hospital of the Japanese Foundation for Cancer Research, Tokyo, Japan
| | - Masayuki Nakao
- Department of Thoracic Surgical Oncology, Cancer Institute Hospital of the Japanese Foundation for Cancer Research, Tokyo, Japan
| | - Sakae Okumura
- Department of Thoracic Surgical Oncology, Cancer Institute Hospital of the Japanese Foundation for Cancer Research, Tokyo, Japan
| | - Mingyon Mun
- Department of Thoracic Surgical Oncology, Cancer Institute Hospital of the Japanese Foundation for Cancer Research, Tokyo, Japan
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25
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Chukowry PS, Spittle DA, Turner AM. Small Airways Disease, Biomarkers and COPD: Where are We? Int J Chron Obstruct Pulmon Dis 2021; 16:351-365. [PMID: 33628018 PMCID: PMC7899307 DOI: 10.2147/copd.s280157] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Accepted: 12/11/2020] [Indexed: 11/23/2022] Open
Abstract
The response to treatment and progression of Chronic Obstructive Pulmonary Disease (COPD) varies significantly. Small airways disease (SAD) is being increasingly recognized as a key pathological feature of COPD. Studies have brought forward pathological evidence of small airway damage preceding the development of emphysema and the detection of obstruction using traditional spirometry. In recent years, there has been a renewed interest in the early detection of SAD and this has brought along an increased demand for physiological tests able to identify and quantify SAD. Early detection of SAD allows early targeted therapy and this suggests the potential for altering the course of disease. The aim of this article is to review the evidence available on the physiological testing of small airways. The first half will focus on the role of lung function tests such as maximum mid-expiratory flow, impulse oscillometry and lung clearance index in detecting and quantifying SAD. The role of Computed Tomography (CT) as a radiological biomarker will be discussed as well as the potential of recent CT analysis software to differentiate normal aging of the lungs to pathology. The evidence behind SAD biomarkers sourced from blood as well as biomarkers sourced from sputum and broncho-alveolar lavage (BAL) will be reviewed. This paper focuses on CC-16, sRAGE, PAI-1, MMP-9 and MMP-12.
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Affiliation(s)
- Priyamvada S Chukowry
- Respiratory Research Department, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK
| | - Daniella A Spittle
- Institute of Inflammation and Ageing, University of Birmingham, Birmingham, B15 2TT, UK
| | - Alice M Turner
- Institute for Applied Health Research, University of Birmingham, Birmingham, B15 2TT, UK
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26
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Chandiramohan A, Dabaghi M, Aguiar JA, Tiessen N, Stewart M, Cao QT, Nguyen JP, Makhdami N, Cox G, Doxey AC, Hirota JA. Development and validation of an open-source, disposable, 3D-printed in vitro environmental exposure system for Transwell culture inserts. ERJ Open Res 2021; 7:00705-2020. [PMID: 33614779 PMCID: PMC7882787 DOI: 10.1183/23120541.00705-2020] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Accepted: 11/23/2020] [Indexed: 01/18/2023] Open
Abstract
Accessible in vitro models recapitulating the human airway that are amenable to study whole cannabis smoke exposure are needed for immunological and toxicological studies that inform public health policy and recreational cannabis use. In the present study, we developed and validated a novel three-dimensional (3D)-printed in vitro exposure system (IVES) that can be directly applied to study the effect of cannabis smoke exposure on primary human bronchial epithelial cells. Using commercially available design software and a 3D printer, we designed a four-chamber Transwell insert holder for exposures to whole smoke. COMSOL Multiphysics software was used to model gas distribution, concentration gradients, velocity profile and shear stress within IVES. Following simulations, primary human bronchial epithelial cells cultured at the air–liquid interface on Transwell inserts were exposed to whole cannabis smoke using a modified version of the Foltin puff procedure. Following 24 h, outcome measurements included cell morphology, epithelial barrier function, lactate dehydrogenase (LDH) levels, cytokine expression and gene expression. Whole smoke delivered through IVES possesses velocity profiles consistent with uniform gas distribution across the four chambers and complete mixing. Airflow velocity ranged between 1.0 and 1.5 µm·s−1 and generated low shear stresses (<<1 Pa). Human airway epithelial cells exposed to cannabis smoke using IVES showed changes in cell morphology and disruption of barrier function without significant cytotoxicity. Cannabis smoke elevated interleukin-1 family cytokines and elevated CYP1A1 and CYP1B1 expression relative to control, validating IVES smoke exposure impacts in human airway epithelial cells at a molecular level. The growing legalisation of cannabis on a global scale must be paired with research related to potential health impacts of lung exposures. IVES represents an accessible, open-source, exposure system that can be used to model varying types of cannabis smoke exposures with human airway epithelial cells grown under air–liquid interface culture conditions. Development of an open-source, disposable, 3D-printed in vitro environmental exposure system for Transwell culture inserts that can be used for environmental exposures important for lung health, and validation with cannabis smoke exposurehttps://bit.ly/2JjgDrm
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Affiliation(s)
- Abiram Chandiramohan
- Firestone Institute for Respiratory Health - Division of Respirology, Dept of Medicine, McMaster University, Hamilton, ON, Canada.,These authors contributed equally
| | - Mohammedhossein Dabaghi
- Firestone Institute for Respiratory Health - Division of Respirology, Dept of Medicine, McMaster University, Hamilton, ON, Canada.,These authors contributed equally
| | | | - Nicholas Tiessen
- Firestone Institute for Respiratory Health - Division of Respirology, Dept of Medicine, McMaster University, Hamilton, ON, Canada
| | - Mary Stewart
- Firestone Institute for Respiratory Health - Division of Respirology, Dept of Medicine, McMaster University, Hamilton, ON, Canada
| | - Quynh T Cao
- Firestone Institute for Respiratory Health - Division of Respirology, Dept of Medicine, McMaster University, Hamilton, ON, Canada
| | - Jenny P Nguyen
- Firestone Institute for Respiratory Health - Division of Respirology, Dept of Medicine, McMaster University, Hamilton, ON, Canada
| | - Nima Makhdami
- Firestone Institute for Respiratory Health - Division of Respirology, Dept of Medicine, McMaster University, Hamilton, ON, Canada
| | - Gerard Cox
- Firestone Institute for Respiratory Health - Division of Respirology, Dept of Medicine, McMaster University, Hamilton, ON, Canada
| | - Andrew C Doxey
- Firestone Institute for Respiratory Health - Division of Respirology, Dept of Medicine, McMaster University, Hamilton, ON, Canada.,Dept of Biology, University of Waterloo, Waterloo, ON, Canada
| | - Jeremy A Hirota
- Firestone Institute for Respiratory Health - Division of Respirology, Dept of Medicine, McMaster University, Hamilton, ON, Canada.,Dept of Biology, University of Waterloo, Waterloo, ON, Canada.,McMaster Immunology Research Centre, McMaster University, Hamilton, ON, Canada.,Division of Respiratory Medicine, Dept of Medicine, University of British Columbia, Vancouver, BC, Canada
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27
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Fetal and Postnatal Nicotine Exposure Modifies Maturation of Gonocytes to Spermatogonia in Mice. ACTA ACUST UNITED AC 2020; 2020:8892217. [PMID: 33381390 PMCID: PMC7758125 DOI: 10.1155/2020/8892217] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Accepted: 11/23/2020] [Indexed: 12/31/2022]
Abstract
Studies in laboratory animals have shown that male offspring from dams, exposed to nicotine during pregnancy and postnatal periods, show alterations in fertility, although the origin of this is still uncertain. In this study, we examined in a mouse model if the process of gonocyte maturation to spermatogonia was affected in male offspring from dams with nicotine administration during pregnancy and postnatal periods. BALB/C mice, with and without nicotine administrations in pregnancy and postnatal periods, were studied. The animals were euthanized at 3, 7, 10, 16, and 35 days postpartum (dpp). Testicular tissue samples were processed for histological, ultrastructural, and immunohistochemical studies; and testicular lipoperoxidation was determined. It was observed that in the nicotine-exposed animals, there was increased apoptosis and a reduction in the number of gonocytes that matured to spermatogonia. This gonocyte-spermatogonia maturation reduction was associated with a greater immunoreactivity to nicotinic acetylcholine receptors in the germ cells. Lipoperoxidation was similar in both groups until 16 dpp, with significant reduction at 35 dpp. Our findings suggest that nicotine intake during pregnancy and postnatal periods can affect the process of maturation of gonocytes to spermatogonia and the pool of available spermatogonia for spermatogenesis.
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28
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Fantauzzi MF, Aguiar JA, Tremblay BJM, Mansfield MJ, Yanagihara T, Chandiramohan A, Revill S, Ryu MH, Carlsten C, Ask K, Stämpfli M, Doxey AC, Hirota JA. Expression of endocannabinoid system components in human airway epithelial cells: impact of sex and chronic respiratory disease status. ERJ Open Res 2020; 6:00128-2020. [PMID: 33344628 PMCID: PMC7737429 DOI: 10.1183/23120541.00128-2020] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Accepted: 09/18/2020] [Indexed: 12/12/2022] Open
Abstract
Cannabis smoking is the dominant route of delivery, with the airway epithelium functioning as the site of first contact. The endocannabinoid system is responsible for mediating the physiological effects of inhaled phytocannabinoids. The expression of the endocannabinoid system in the airway epithelium and contribution to normal physiological responses remains to be defined. To begin to address this knowledge gap, a curated dataset of 1090 unique human bronchial brushing gene expression profiles was created. The dataset included 616 healthy subjects, 136 subjects with asthma, and 338 subjects with COPD. A 32-gene endocannabinoid signature was analysed across all samples with sex and disease-specific analyses performed. Immunohistochemistry and immunoblots were performed to probe in situ and in vitro protein expression. CB1, CB2, and TRPV1 protein signal is detectable in human airway epithelial cells in situ and in vitro, justifying examining the downstream endocannabinoid pathway. Sex status was associated with differential expression of 7 of 32 genes. In contrast, disease status was associated with differential expression of 21 of 32 genes in people with asthma and 26 of 32 genes in people with COPD. We confirm at the protein level that TRPV1, the most differentially expressed candidate in our analyses, was upregulated in airway epithelial cells from people with asthma relative to healthy subjects. Our data demonstrate that the endocannabinoid system is expressed in human airway epithelial cells with expression impacted by disease status and minimally by sex. The data suggest that cannabis consumers may have differential physiological responses in the respiratory mucosa.
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Affiliation(s)
- Matthew F Fantauzzi
- Firestone Institute for Respiratory Health - Division of Respirology, Dept of Medicine, McMaster University, Hamilton, ON, Canada.,McMaster Immunology Research Centre, McMaster University, Hamilton, ON, Canada
| | | | | | - Michael J Mansfield
- Genomics and Regulatory Systems Unit, Okinawa Institute of Science and Technology Graduate University, Onna, Japan
| | - Toyoshi Yanagihara
- Firestone Institute for Respiratory Health - Division of Respirology, Dept of Medicine, McMaster University, Hamilton, ON, Canada
| | - Abiram Chandiramohan
- Firestone Institute for Respiratory Health - Division of Respirology, Dept of Medicine, McMaster University, Hamilton, ON, Canada
| | - Spencer Revill
- Firestone Institute for Respiratory Health - Division of Respirology, Dept of Medicine, McMaster University, Hamilton, ON, Canada
| | - Min Hyung Ryu
- Division of Respiratory Medicine, Dept of Medicine, University of British Columbia, Vancouver, BC, Canada
| | - Chris Carlsten
- Division of Respiratory Medicine, Dept of Medicine, University of British Columbia, Vancouver, BC, Canada
| | - Kjetil Ask
- Firestone Institute for Respiratory Health - Division of Respirology, Dept of Medicine, McMaster University, Hamilton, ON, Canada.,McMaster Immunology Research Centre, McMaster University, Hamilton, ON, Canada
| | - Martin Stämpfli
- Firestone Institute for Respiratory Health - Division of Respirology, Dept of Medicine, McMaster University, Hamilton, ON, Canada.,McMaster Immunology Research Centre, McMaster University, Hamilton, ON, Canada
| | - Andrew C Doxey
- Firestone Institute for Respiratory Health - Division of Respirology, Dept of Medicine, McMaster University, Hamilton, ON, Canada.,Dept of Biology, University of Waterloo, Waterloo, ON, Canada
| | - Jeremy A Hirota
- Firestone Institute for Respiratory Health - Division of Respirology, Dept of Medicine, McMaster University, Hamilton, ON, Canada.,McMaster Immunology Research Centre, McMaster University, Hamilton, ON, Canada.,Dept of Biology, University of Waterloo, Waterloo, ON, Canada.,Division of Respiratory Medicine, Dept of Medicine, University of British Columbia, Vancouver, BC, Canada
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29
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Yang T, Tang H, Risch HA, Olson SH, Petersen G, Bracci PM, Gallinger S, Hung R, Neale RE, Scelo G, Duell EJ, Kurtz RC, Khaw KT, Severi G, Sund M, Wareham N, Amos CI, Li D, Wei P. Incorporating multiple sets of eQTL weights into gene-by-environment interaction analysis identifies novel susceptibility loci for pancreatic cancer. Genet Epidemiol 2020; 44:880-892. [PMID: 32779232 PMCID: PMC7657998 DOI: 10.1002/gepi.22348] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Revised: 07/14/2020] [Accepted: 07/30/2020] [Indexed: 11/11/2022]
Abstract
It is of great scientific interest to identify interactions between genetic variants and environmental exposures that may modify the risk of complex diseases. However, larger sample sizes are usually required to detect gene-by-environment interaction (G × E) than required to detect genetic main association effects. To boost the statistical power and improve the understanding of the underlying molecular mechanisms, we incorporate functional genomics information, specifically, expression quantitative trait loci (eQTLs), into a data-adaptive G × E test, called aGEw. This test adaptively chooses the best eQTL weights from multiple tissues and provides an extra layer of weighting at the genetic variant level. Extensive simulations show that the aGEw test can control the Type 1 error rate, and the power is resilient to the inclusion of neutral variants and noninformative external weights. We applied the proposed aGEw test to the Pancreatic Cancer Case-Control Consortium (discovery cohort of 3,585 cases and 3,482 controls) and the PanScan II genome-wide association study data (replication cohort of 2,021 cases and 2,105 controls) with smoking as the exposure of interest. Two novel putative smoking-related pancreatic cancer susceptibility genes, TRIP10 and KDM3A, were identified. The aGEw test is implemented in an R package aGE.
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Affiliation(s)
- Tianzhong Yang
- Department of Biostatistics, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
- Divison of Biostatistics, University of Minnesota, Minneapolis, MN, USA
| | - Hongwei Tang
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | | | - Sara H. Olson
- Department of Epidemiology and Biostatistics, Memorial Sloan Kettering Cancer Center, New York, NY, US
| | - Gloria Petersen
- Department of Health Sciences Research, Mayo Clinic, Rochester, MN, USA
| | - Paige M. Bracci
- Department of Epidemiology & Biostatistics, University of California San Francisco, San Francisco, CA, USA
| | - Steven Gallinger
- Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, University of Toronto, Toronto, Canada
| | - Rayjean Hung
- Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, University of Toronto, Toronto, Canada
| | - Rachel E. Neale
- Cancer Aetiology and Prevention Group, QIMR Berghofer Medical Research Institute, Brisbane, QLD, Australia
| | | | - Eric J. Duell
- Unit of Nutrition and Cancer, Cancer Epidemiology Research Program Catalan Institute of Oncology - Bellvitge Biomedical Research Institute (ICO-IDIBELL) Avda. Gran Via 199-203 08908 L’Hospitalet de Llobregat, Barcelona, Spain
| | - Robert C. Kurtz
- Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Kay-Tee Khaw
- Department of Public Health and Primary Care, University of Cambridge, UK
| | - Gianluca Severi
- Gustave Roussy, F-94805, Villejuif, France
- CESP, Fac. de médecine - Univ. Paris-Sud, Fac. de médecine - UVSQ, INSERM, Université Paris-Saclay, 94805, Villejuif, France
| | - Malin Sund
- Department of Surgical and Perioperative Sciences, Umeå University, Sweden
| | - Nick Wareham
- MRC Epidemiology Unit, University of Cambridge School of Clinical Medicine, Cambridge, UK
| | - Christopher I Amos
- Dan L Duncan Comprehensive Cancer Center, Baylor College of Medicine, Houston, TX, USA
| | - Donghui Li
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Peng Wei
- Department of Biostatistics, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
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30
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Centner AM, Bhide PG, Salazar G. Nicotine in Senescence and Atherosclerosis. Cells 2020; 9:E1035. [PMID: 32331221 PMCID: PMC7226537 DOI: 10.3390/cells9041035] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Revised: 04/08/2020] [Accepted: 04/16/2020] [Indexed: 12/22/2022] Open
Abstract
Cigarette smoke is a known exacerbator of age-related pathologies, such as cardiovascular disease (CVD), atherosclerosis, and cellular aging (senescence). However, the role of nicotine and its major metabolite cotinine is yet to be elucidated. Considering the growing amount of nicotine-containing aerosol use in recent years, the role of nicotine is a relevant public health concern. A number of recent studies and health education sites have focused on nicotine aerosol-induced adverse lung function, and neglected cardiovascular (CV) impairments and diseases. A critical review of the present scientific literature leads to the hypothesis that nicotine mediates the effects of cigarette smoke in the CV system by increasing MAPK signaling, inflammation, and oxidative stress through NADPH oxidase 1 (Nox1), to induce vascular smooth muscle cell (VSMC) senescence. The accumulation of senescent VSMCs in the lesion cap is detrimental as it increases the pathogenesis of atherosclerosis by promoting an unstable plaque phenotype. Therefore, nicotine, and most likely its metabolite cotinine, adversely influence atherosclerosis.
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Affiliation(s)
- Ann Marie Centner
- Department of Nutrition, Food and Exercise Sciences, College of Human Scinces, 120 Convocation Way, Florida State University, Tallahassee, FL 32306, USA;
| | - Pradeep G. Bhide
- Department of Biomedical Sciences, FSU College of Medicine, 1115, West Call Street, Tallahassee, FL 32306, USA;
| | - Gloria Salazar
- Department of Nutrition, Food and Exercise Sciences, College of Human Scinces, 120 Convocation Way, Florida State University, Tallahassee, FL 32306, USA;
- Center for Advancing Exercise and Nutrition Research on Aging (CAENRA), Florida State University, Tallahassee, FL 32306, USA
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31
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Hughes MJ, McGettrick HM, Sapey E. Shared mechanisms of multimorbidity in COPD, atherosclerosis and type-2 diabetes: the neutrophil as a potential inflammatory target. Eur Respir Rev 2020; 29:190102. [PMID: 32198215 PMCID: PMC9488696 DOI: 10.1183/16000617.0102-2019] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Accepted: 11/02/2019] [Indexed: 12/17/2022] Open
Abstract
Multimorbidity is increasingly common and current healthcare strategies are not always aligned to treat this complex burden of disease. COPD, type-2 diabetes mellitus (T2D) and cardiovascular disease, especially atherosclerosis, occur more frequently together than expected, even when risk factors such as smoking, obesity, inactivity and poverty are considered. This supports the possibility of unifying mechanisms that contribute to the pathogenesis or progression of each condition.Neutrophilic inflammation is causally associated with COPD, and increasingly recognised in the pathogenesis of atherosclerosis and T2D, potentially forming an aetiological link between conditions. This link might reflect an overspill of inflammation from one affected organ into the systemic circulation, exposing all organs to an increased milieu of proinflammatory cytokines. Additionally, increasing evidence supports the involvement of other processes in chronic disease pathogenesis, such as cellular senescence or changes in cellular phenotypes.This review explores the current scientific evidence for inflammation, cellular ageing and cellular processes, such as reactive oxygen species production and phenotypic changes in the pathogenesis of COPD, T2D and atherosclerosis; highlighting common mechanisms shared across these diseases. We identify emerging therapeutic approaches that target these areas, but also where more work is still required to improve our understanding of the underlying cellular biology in a multimorbid disease setting.
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Affiliation(s)
- Michael J Hughes
- Birmingham Acute Care Research Group, Institute of Inflammation and Ageing, University of Birmingham, Birmingham, UK
| | - Helen M McGettrick
- Rheumatology Research Group, Institute of Inflammation and Ageing, University of Birmingham, Birmingham, UK
| | - Elizabeth Sapey
- Birmingham Acute Care Research Group, Institute of Inflammation and Ageing, University of Birmingham, Birmingham, UK
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32
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Capurso C, Bellanti F, Lo Buglio A, Vendemiale G. The Mediterranean Diet Slows Down the Progression of Aging and Helps to Prevent the Onset of Frailty: A Narrative Review. Nutrients 2019; 12:nu12010035. [PMID: 31877702 PMCID: PMC7019245 DOI: 10.3390/nu12010035] [Citation(s) in RCA: 64] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Revised: 12/10/2019] [Accepted: 12/18/2019] [Indexed: 02/05/2023] Open
Abstract
The aging population is rapidly increasing all over the world. This results in significant implications for the planning and provision of health and social care. Aging is physiologically characterized by a decrease in lean mass, bone mineral density and, to a lesser extent, fat mass. The onset of sarcopenia leads to weakness and a further decrease in physical activity. An insufficient protein intake, which we often observe in patients of advanced age, certainly accelerates the progression of sarcopenia. In addition, many other factors (e.g., insulin resistance, impaired protein digestion and absorption of amino acids) reduce the stimulation of muscle protein synthesis in the elderly, even if the protein intake is adequate. Inadequate intake of foods can also cause micronutrient deficiencies that contribute to the development of frailty. We know that a healthy eating style in middle age predisposes to so-called "healthy and successful" aging, which is the condition of the absence of serious chronic diseases or of an important decline in cognitive or physical functions, or mental health. The Mediterranean diet is recognized to be a "healthy food" dietary pattern; high adherence to this dietary pattern is associated with a lower incidence of chronic diseases and lower physical impairment in old age. The aim of our review was to analyze observational studies (cohort and case-control studies) that investigated the effects of following a healthy diet, and especially the effect of adherence to a Mediterranean diet (MD), on the progression of aging and on onset of frailty.
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33
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Wu X, Huang Q, Javed R, Zhong J, Gao H, Liang H. Effect of tobacco smoking on the epigenetic age of human respiratory organs. Clin Epigenetics 2019; 11:183. [PMID: 31801625 PMCID: PMC6894291 DOI: 10.1186/s13148-019-0777-z] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2019] [Accepted: 11/12/2019] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Smoking leads to the aging of organs. However, no studies have been conducted to quantify the effect of smoking on the aging of respiratory organs and the aging-reversing ability of smoking cessation. RESULTS We collected genome-wide methylation datasets of buccal cells, airway cells, esophagus tissue, and lung tissue from non-smokers, smokers, and ex-smokers. We used the "epigenetic clock" method to quantify the epigenetic age acceleration in the four organs. The statistical analyses showed the following: (1) Smoking increased the epigenetic age of airway cells by an average of 4.9 years and lung tissue by 4.3 years. (2) After smoking ceased, the epigenetic age acceleration in airway cells (but not in lung tissue) slowed to a level that non-smokers had. (3) The epigenetic age acceleration in airway cells and lung tissue showed no gender difference. CONCLUSIONS Smoking can accelerate the epigenetic age of human respiratory organs, but the effect varies among organs and can be reversed by smoking cessation. Our study provides a powerful incentive to reduce tobacco consumption autonomously.
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Affiliation(s)
- Xiaohui Wu
- Institute of Pediatrics, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, No. 9 Jinsui Road, Guangzhou, 510623, Guangdong, China.,Department of Medical Genetics, School of Basic Medical Sciences, Southern Medical University, Guangzhou, Guangdong, China.,Guangdong Technology and Engineering Research Center for Molecular Diagnostics of Human Genetic Diseases, Guangzhou, Guangdong, China.,Guangdong Province Key Laboratory of Psychiatric Disorders, Guangzhou, Guangdong, China
| | - Qingsheng Huang
- Institute of Pediatrics, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, No. 9 Jinsui Road, Guangzhou, 510623, Guangdong, China
| | - Ruheena Javed
- Institute of Pediatrics, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, No. 9 Jinsui Road, Guangzhou, 510623, Guangdong, China
| | - Jiayong Zhong
- Institute of Pediatrics, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, No. 9 Jinsui Road, Guangzhou, 510623, Guangdong, China
| | - Huan Gao
- Institute of Pediatrics, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, No. 9 Jinsui Road, Guangzhou, 510623, Guangdong, China
| | - Huiying Liang
- Institute of Pediatrics, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, No. 9 Jinsui Road, Guangzhou, 510623, Guangdong, China.
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Abstract
People worldwide are living longer, and it is estimated that by 2050, the proportion of the world's population over 60 years of age will nearly double. Natural lung aging is associated with molecular and physiological changes that cause alterations in lung function, diminished pulmonary remodeling and regenerative capacity, and increased susceptibility to acute and chronic lung diseases. As the aging population rapidly grows, it is essential to examine how alterations in cellular function and cell-to-cell interactions of pulmonary resident cells and systemic immune cells contribute to a higher risk of increased susceptibility to infection and development of chronic diseases, such as chronic obstructive pulmonary disease and interstitial pulmonary fibrosis. This review provides an overview of physiological, structural, and cellular changes in the aging lung and immune system that facilitate the development and progression of disease.
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Affiliation(s)
- Soo Jung Cho
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Weill Cornell Medicine, New York, NY 10065, USA;
| | - Heather W Stout-Delgado
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Weill Cornell Medicine, New York, NY 10065, USA;
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35
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Martinez FJ, Han MK, Allinson JP, Barr RG, Boucher RC, Calverley PMA, Celli BR, Christenson SA, Crystal RG, Fagerås M, Freeman CM, Groenke L, Hoffman EA, Kesimer M, Kostikas K, Paine R, Rafii S, Rennard SI, Segal LN, Shaykhiev R, Stevenson C, Tal-Singer R, Vestbo J, Woodruff PG, Curtis JL, Wedzicha JA. At the Root: Defining and Halting Progression of Early Chronic Obstructive Pulmonary Disease. Am J Respir Crit Care Med 2019; 197:1540-1551. [PMID: 29406779 DOI: 10.1164/rccm.201710-2028pp] [Citation(s) in RCA: 165] [Impact Index Per Article: 33.0] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Affiliation(s)
- Fernando J Martinez
- 1 Weill Cornell Medical College, New York, New York.,2 University of Michigan School of Medicine, Ann Arbor, Michigan
| | - MeiLan K Han
- 2 University of Michigan School of Medicine, Ann Arbor, Michigan
| | | | | | | | | | | | | | | | | | - Christine M Freeman
- 2 University of Michigan School of Medicine, Ann Arbor, Michigan.,10 Veterans Affairs Ann Arbor Healthcare System, Ann Arbor, Michigan
| | | | - Eric A Hoffman
- 12 University of Iowa Carver College of Medicine, Iowa City, Iowa
| | - Mehmet Kesimer
- 5 University of North Carolina, Chapel Hill, North Carolina
| | | | - Robert Paine
- 14 University of Utah, Salt Lake City, Utah.,15 Veterans Affairs Salt Lake City Health Care System, Salt Lake City, Utah
| | - Shahin Rafii
- 1 Weill Cornell Medical College, New York, New York
| | | | | | | | | | | | | | | | - Jeffrey L Curtis
- 2 University of Michigan School of Medicine, Ann Arbor, Michigan.,10 Veterans Affairs Ann Arbor Healthcare System, Ann Arbor, Michigan
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36
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Zhang M, Shi R, Zhang Y, Shan H, Zhang Q, Yang X, Li Y, Zhang J. Nix/BNIP3L-dependent mitophagy accounts for airway epithelial cell injury induced by cigarette smoke. J Cell Physiol 2019; 234:14210-14220. [PMID: 30618073 DOI: 10.1002/jcp.28117] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2018] [Accepted: 12/10/2018] [Indexed: 12/15/2022]
Abstract
Cigarette smoke-induced airway epithelial cell mitophagy is an important mechanism in the pathogenesis of chronic obstructive pulmonary disease (COPD). Mitochondrial protein Nix (also known as BNIP3L) is a selective autophagy receptor and participates in several human diseases. However, little is known about the role of Nix in airway epithelial cell injury during the development of COPD. The aim of the present study is to investigate the effects of Nix on mitophagy and mitochondrial function in airway epithelial cells exposed to cigarette smoke extract (CSE). Our present study has found that CSE could increase Nix protein expression and induce mitophagy in airway epithelial cells. And Nix siRNA significantly inhibited mitophagy and attenuated mitochondrial dysfunction and cell injury when airway epithelial cells were stimulated with 7.5% CSE. In contrast, Nix overexpression enhanced mitophagy and aggravated mitochondrial dysfunction and cell injury when airway epithelial cells were incubated with 7.5% CSE. These data suggest that Nix-dependent mitophagy promotes airway epithelial cell and mitochondria injury induced by cigarette smoke, and may be involved in the pathogenesis of COPD and other cigarette smoke-associated diseases.
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Affiliation(s)
- Ming Zhang
- Department of Respiratory and Critical Care Medicine, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Rong Shi
- Department of Respiratory and Critical Care Medicine, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Yeli Zhang
- Department of Respiratory and Critical Care Medicine, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Hu Shan
- Department of Respiratory and Critical Care Medicine, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Qiuhong Zhang
- Department of Respiratory and Critical Care Medicine, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Xia Yang
- Department of Respiratory and Critical Care Medicine, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Yali Li
- Department of Respiratory and Critical Care Medicine, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Jie Zhang
- Department of Respiratory and Critical Care Medicine, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
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Han Y, Heo Y, Hong Y, Kwon SO, Kim WJ. Correlation between Physical Activity and Lung Function in Dusty Areas: Results from the Chronic Obstructive Pulmonary Disease in Dusty Areas (CODA) Cohort. Tuberc Respir Dis (Seoul) 2019; 82:311-318. [PMID: 31172706 PMCID: PMC6778737 DOI: 10.4046/trd.2019.0006] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Revised: 04/02/2019] [Accepted: 05/09/2019] [Indexed: 11/29/2022] Open
Abstract
Background Although physical activity is known to be beneficial to lung function, few studies have been conducted to investigate the correlation between physical activity and lung function in dusty areas. Therefore, the purpose of this study is to investigate the correlation between physical activity and lung function in a Korean cohort including normal and COPD-diagnosed participants. Methods Data obtained from the COPD in dusty areas (CODA) cohort was analyzed for the following factors: lung function, symptoms, and information about physical activity. Information on physical activity was valuated using questionnaires, and participants were categorized into two groups: active and inactive. The evaluation of the mean lung function, modified Medical Research Council dyspnea grade scores, and COPD assessment test scores was done based on the participant physical activity using a general linear model after adjusting for age, sex, smoking status, pack-years, height, and weight. In addition, a stratification analysis was performed based on the smoking status and COPD. Results Physical activity had a correlation with high forced expiratory volume in 1 second (FEV1) among CODA cohort (p=0.03). While the active group exhibited significantly higher FEV1 compared to one exhibited by the inactive group among past smokers (p=0.02), no such correlation existed among current smokers. There was no significant difference observed in lung function after it was stratified by COPD. Conclusion This study established a positive correlation between regular physical activity in dusty areas and lung function in participants.
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Affiliation(s)
- Yuri Han
- Department of Internal Medicine and Environmental Health Center, Kangwon National University, Chuncheon, Korea
| | - Yeonjeong Heo
- Department of Internal Medicine and Environmental Health Center, Kangwon National University, Chuncheon, Korea
| | - Yoonki Hong
- Department of Internal Medicine and Environmental Health Center, Kangwon National University, Chuncheon, Korea
| | - Sung Ok Kwon
- Biomedical Research Institute, Kangwon National University Hospital, Chuncheon, Korea
| | - Woo Jin Kim
- Department of Internal Medicine and Environmental Health Center, Kangwon National University, Chuncheon, Korea.
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Abstract
Although chronic obstructive pulmonary disease (COPD) is regarded as a chronic inflammatory lung disease, the disease mechanism is still not known. Intriguingly, aging lungs are quite similar to COPD-affected lungs in many ways, and COPD has been viewed as a disease of accelerated premature aging of the lungs. In this paper, based on a literature review, we would like to propose immunosenescence, age-associated decline in immunity, as a critical mechanism for the development of COPD. Immunosenescence can cause a low-grade, systemic inflammation described as inflammaging. This inflammaging may be directly involved in the COPD pathogenesis. The potential contributors to the development of inflammaging in the lungs possibly leading to COPD are discussed in the review paper. A notable fact about COPD is that only 15% to 20% of smokers develop clinically significant COPD. Given that there is a substantial inter-individual variation in inflammaging susceptibility, which is genetically determined and significantly affected by the history of the individual's exposure to pathogens, immunosenescence and inflammaging may also provide the answer for this unexpectedly low susceptibility of smokers to clinically significant COPD.
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Affiliation(s)
- Won Kyung Cho
- Department of Pulmonary and Critical Care Medicine, International Healthcare Center, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
| | - Chun Geun Lee
- Department of Molecular Microbiology and Immunology, Division of Biology and Medical Sciences, Brown University, Providence, RI, USA
| | - Lark Kyun Kim
- Severance Biomedical Science Institute and BK21 PLUS Project for Medical Sciences, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea.
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Bowdish DM. The Aging Lung. Chest 2019; 155:391-400. [DOI: 10.1016/j.chest.2018.09.003] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Revised: 08/13/2018] [Accepted: 09/05/2018] [Indexed: 02/07/2023] Open
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Qiu J, Zhang YN, Zheng X, Zhang P, Ma G, Tan H. Notch promotes DNMT-mediated hypermethylation of Klotho leads to COPD-related inflammation. Exp Lung Res 2019; 44:368-377. [PMID: 30686068 DOI: 10.1080/01902148.2018.1556749] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
AIM Klotho expression significantly declines in alveolar macrophages and airway epithelial cells in chronic obstructive pulmonary disease (COPD) patients, and cigarette smoke extract dramatically inhibits the expression and secretion of α-Klotho. This suggests that the silencing of Klotho is the major factor promoting COPD related inflammatory responses. This study aims to investigate the mechanism of Klotho downregulation and its effect on the inflammatory cytokines secretion and cell apoptosis. METHODS Expression of DNA methyltransferases (DNMTs) and Notch signaling activation were quantified in MH-S and 16HBE cells stimulated with cigarette smoke extract (CSE) solution. Specific inhibitors of DNMTs or Notch pathway were added together with CSE into treated and control cells. Inflammatory cytokines, cell viability and cell death were determined to explore the effect of Klotho on COPD related inflammation. RESULTS CSE treatment statistically increased the level of DNMTs expression, Klotho promoter methylation, and activated the Notch signaling pathway. Notch signal activation played a critical role in the process of modification of Klotho promoter methylation. The inhibition of DNMTs and Notch pathway rescued Klotho levels and inhibited inflammation and cell apoptosis after CSE treatment. CONCLUSION Notch-mediated Klotho hypermethylation inhibited Klotho expression, which promoted inflammatory response and cell apoptosis that were associated with the development of COPD.
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Affiliation(s)
- Jie Qiu
- a Department of Respiratory and Critical Care Medicine , General Hospital of Ningxia Medical University , Yinchuan , China
| | - Ya-Nan Zhang
- a Department of Respiratory and Critical Care Medicine , General Hospital of Ningxia Medical University , Yinchuan , China
| | - Xiwei Zheng
- a Department of Respiratory and Critical Care Medicine , General Hospital of Ningxia Medical University , Yinchuan , China
| | - Peng Zhang
- a Department of Respiratory and Critical Care Medicine , General Hospital of Ningxia Medical University , Yinchuan , China
| | - Gang Ma
- a Department of Respiratory and Critical Care Medicine , General Hospital of Ningxia Medical University , Yinchuan , China
| | - Hai Tan
- a Department of Respiratory and Critical Care Medicine , General Hospital of Ningxia Medical University , Yinchuan , China
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41
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Sidhaye VK, Holbrook JT, Burke A, Sudini KR, Sethi S, Criner GJ, Fahey JW, Berenson CS, Jacobs MR, Thimmulappa R, Wise RA, Biswal S. Compartmentalization of anti-oxidant and anti-inflammatory gene expression in current and former smokers with COPD. Respir Res 2019; 20:190. [PMID: 31429757 PMCID: PMC6700818 DOI: 10.1186/s12931-019-1164-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Accepted: 08/13/2019] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Patients with chronic obstructive pulmonary disease (COPD) have high oxidative stress associated with the severity of the disease. Nuclear factor erythroid-2 related factor 2 (Nrf2)-directed stress response plays a critical role in the protection of lung cells to oxidative stress by upregulating antioxidant genes in response to tobacco smoke. There is a critical gap in our knowledge about Nrf-2 regulated genes in active smokers and former-smokers with COPD in different cell types from of lungs and surrogate peripheral tissues. METHODS We compared the expression of Nrf2 and six of its target genes in alveolar macrophages, nasal, and bronchial epithelium and peripheral blood mononuclear cells (PBMCs) in current and former smokers with COPD. We compared cell-type specific of Nrf2 and its target genes as well as markers of oxidative and inflammatory stress. RESULTS We enrolled 89 patients; expression all Nrf2 target gene measured were significantly higher in the bronchial epithelium from smokers compared to non-smokers. None were elevated in alveolar macrophages and only one was elevated in each of the other compartments. CONCLUSION Bronchial epithelium is the most responsive tissue for transcriptional activation of Nrf2 target genes in active smokers compared to former-smokers with COPD that correlated with oxidative stress and inflammatory markers. There were no consistent trends in gene expression in other cell types tested. TRIAL REGISTRATION Clinicaltrials.gov : NCT01335971.
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Affiliation(s)
- Venkataramana K. Sidhaye
- 0000 0001 2171 9311grid.21107.35School of Medicine, Johns Hopkins University, 615 N. Wolfe St., E7622, Baltimore, MD 21205 USA ,0000 0001 2171 9311grid.21107.35Johns Hopkins Bloomberg School of Public Health, 615 N. Wolfe St., E7622, Baltimore, MD 21205 USA
| | - Janet T. Holbrook
- 0000 0001 2171 9311grid.21107.35Johns Hopkins Bloomberg School of Public Health, 615 N. Wolfe St., E7622, Baltimore, MD 21205 USA
| | - Alyce Burke
- 0000 0001 2171 9311grid.21107.35Johns Hopkins Bloomberg School of Public Health, 615 N. Wolfe St., E7622, Baltimore, MD 21205 USA
| | - Kuladeep R. Sudini
- 0000 0001 2171 9311grid.21107.35Johns Hopkins Bloomberg School of Public Health, 615 N. Wolfe St., E7622, Baltimore, MD 21205 USA
| | - Sanjay Sethi
- 0000 0004 1936 9887grid.273335.3University at Buffalo, SUNY, and VA WNY Healthcare System, Buffalo, NY USA
| | - Gerard J. Criner
- 0000 0001 2248 3398grid.264727.2Lewis Katz School of Medicine at Temple University, Philadelphia, PA USA
| | - Jed W. Fahey
- 0000 0001 2171 9311grid.21107.35School of Medicine, Johns Hopkins University, 615 N. Wolfe St., E7622, Baltimore, MD 21205 USA ,0000 0001 2171 9311grid.21107.35Johns Hopkins Bloomberg School of Public Health, 615 N. Wolfe St., E7622, Baltimore, MD 21205 USA
| | - Charles S. Berenson
- 0000 0004 1936 9887grid.273335.3University at Buffalo, SUNY, and VA WNY Healthcare System, Buffalo, NY USA
| | - Michael R. Jacobs
- 0000 0001 2248 3398grid.264727.2Lewis Katz School of Medicine at Temple University, Philadelphia, PA USA
| | - Rajesh Thimmulappa
- 0000 0004 1765 9514grid.414778.9JSS Medical College, JSS Academy of Higher Education & Research, Mysuru, India
| | - Robert A. Wise
- 0000 0001 2171 9311grid.21107.35School of Medicine, Johns Hopkins University, 615 N. Wolfe St., E7622, Baltimore, MD 21205 USA
| | - Shyam Biswal
- 0000 0001 2171 9311grid.21107.35Johns Hopkins Bloomberg School of Public Health, 615 N. Wolfe St., E7622, Baltimore, MD 21205 USA
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Bayfield NGR, Pannekoek A, Tian DH. Preoperative cigarette smoking and short-term morbidity and mortality after cardiac surgery: a meta-analysis. HEART ASIA 2018; 10:e011069. [PMID: 30397415 DOI: 10.1136/heartasia-2018-011069] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Revised: 09/07/2018] [Accepted: 10/02/2018] [Indexed: 01/04/2023]
Abstract
Currently, the choice of whether or not to electively operate on current smokers is varied among cardiothoracic surgeons. This meta-analysis aims to determine whether preoperative current versus ex-smoking status is related to short-term postoperative morbidity and mortality in cardiac surgical patients. Systematic literature searches of the PubMed, MEDLINE and Cochrane databases were carried out to identify all studies in cardiac surgery that investigated the relationship between smoking status and postoperative outcomes. Extracted data were analysed by random effects models. Primary outcomes included 30-day or in-hospital all-cause mortality and pulmonary morbidity. Overall, 13 relevant studies were identified, with 34 230 patients in current or ex-smoking subgroups. There was no difference in mortality (p=0.93). Current smokers had significantly higher risk of overall pulmonary complications (OR 1.44; 95% CI 1.27 to 1.64; p<0.001) and postoperative pneumonia (OR 1.62; 95% CI 1.27 to 2.06; p<0.001) as well as lower risk of postoperative renal complications (OR 0.82; 95% CI 0.70 to 0.96; p=0.01) compared with ex-smokers. There was a trend towards an increased risk of postoperative MI (OR 1.29; 95% CI 0.95 to 1.75; p=0.10). No difference in postoperative neurological complications (p=0.15), postoperative sternal surgical site infections (p=0.20) or postoperative length of intensive care unit stay (p=0.86) was seen. Cardiac surgical patients who are current smokers at the time of operation do not have an increased 30-day mortality risk compared with ex-smokers, although they are at significantly increased risk of postoperative pulmonary complications.
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Affiliation(s)
| | - Adrian Pannekoek
- Department of Clinical Services, Fiona Stanley Hospital, Perth, Australia
| | - David Hao Tian
- Collaborative Research (CORE) Group, Macquarie University, Sydney, Australia
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43
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Xu S, Tsai A, Sze MA, Vucic EA, Shaipanich T, Harris M, Guillemi S, Yang J, Sinha S, Nislow C, Montaner J, Lam W, Lam S, Sin DD, Paul Man SF, Leung JM. Decreased microbiome diversity in the HIV small airway epithelium. Respir Res 2018; 19:140. [PMID: 30053882 PMCID: PMC6062954 DOI: 10.1186/s12931-018-0835-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Accepted: 06/25/2018] [Indexed: 01/11/2023] Open
Abstract
BACKGROUND Persons living with human immunodeficiency virus (PLWH) face an increased burden of chronic obstructive pulmonary disease (COPD). Repeated pulmonary infections, antibiotic exposures, and immunosuppression may contribute to an altered small airway epithelium (SAE) microbiome. METHODS SAE cells were collected from 28 PLWH and 48 HIV- controls through bronchoscopic cytologic brushings. DNA extracted from SAE cells was subjected to 16S rRNA amplification and sequencing. Comparisons of alpha and beta diversity between HIV+ and HIV- groups were performed and key operational taxonomic units (OTUs) distinguishing the two groups were identified using the Boruta feature selection after Random Forest Analysis. RESULTS PLWH demonstrated significantly reduced Shannon diversity compared with HIV- volunteers (1.82 ± 0.10 vs. 2.20 ± 0.073, p = 0.0024). This was primarily driven by a reduction in bacterial richness (23.29 ± 2.75 for PLWH and 46.04 ± 3.716 for HIV-, p < 0.0001). Phyla distribution was significantly altered among PLWH, with an increase in relative abundance of Proteobacteria (p = 0.0003) and a decrease in Bacteroidetes (p = 0.0068) and Firmicutes (p = 0.0002). Six discriminative OTUs were found to distinguish PLWH from HIV- volunteers, aligning to Veillonellaceae, Fusobacterium, Verrucomicrobiaceae, Prevotella, Veillonella, and Campylobacter. CONCLUSIONS Compared to HIV- controls, PLWH's SAE microbiome is marked by reduced bacterial diversity and richness with significant differences in community composition.
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Affiliation(s)
- Stella Xu
- Centre for Heart Lung Innovation, University of British Columbia, Vancouver, BC, Canada
| | - Amy Tsai
- Department of Medicine, Faculty of Medicine, University of British Columbia, Vancouver, BC, Canada
| | - Marc A Sze
- Department of Microbiology and Immunology, University of Michigan, Ann Arbor, MI, USA
| | - Emily A Vucic
- British Columbia Cancer Agency, Vancouver, BC, Canada
| | - Tawimas Shaipanich
- Division of Respiratory Medicine, St. Paul's Hospital, Vancouver, BC, Canada
| | - Marianne Harris
- British Columbia Centre for Excellence in HIV/AIDS, St. Paul's Hospital, Vancouver, BC, Canada
| | - Silvia Guillemi
- British Columbia Centre for Excellence in HIV/AIDS, St. Paul's Hospital, Vancouver, BC, Canada
| | - Julia Yang
- Centre for Heart Lung Innovation, University of British Columbia, Vancouver, BC, Canada
| | - Sunita Sinha
- Faculty of Pharmaceutical Sciences, University of British Columbia, Vancouver, BC, Canada
| | - Corey Nislow
- Faculty of Pharmaceutical Sciences, University of British Columbia, Vancouver, BC, Canada
| | - Julio Montaner
- British Columbia Centre for Excellence in HIV/AIDS, St. Paul's Hospital, Vancouver, BC, Canada
| | - Wan Lam
- British Columbia Cancer Agency, Vancouver, BC, Canada
| | - Stephen Lam
- British Columbia Cancer Agency, Vancouver, BC, Canada
| | - Don D Sin
- Centre for Heart Lung Innovation, University of British Columbia, Vancouver, BC, Canada
- Division of Respiratory Medicine, St. Paul's Hospital, Vancouver, BC, Canada
| | - S F Paul Man
- Centre for Heart Lung Innovation, University of British Columbia, Vancouver, BC, Canada
- Division of Respiratory Medicine, St. Paul's Hospital, Vancouver, BC, Canada
| | - Janice M Leung
- Centre for Heart Lung Innovation, University of British Columbia, Vancouver, BC, Canada.
- Division of Respiratory Medicine, St. Paul's Hospital, Vancouver, BC, Canada.
- Centre for Heart Lung Innovation, St. Paul's Hospital, Room 166-1081 Burrard Street, Vancouver, V6Z 1Y6, Canada.
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Xu S, Vucic EA, Shaipanich T, Lam S, Lam W, Montaner JS, Sin DD, Paul Man SF, Leung JM. Decreased telomere length in the small airway epithelium suggests accelerated aging in the lungs of persons living with human immunodeficiency virus (HIV). Respir Res 2018; 19:117. [PMID: 29895291 PMCID: PMC5998581 DOI: 10.1186/s12931-018-0821-0] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2018] [Accepted: 05/31/2018] [Indexed: 12/29/2022] Open
Abstract
Human immunodeficiency virus (HIV) infection is associated with an increased risk of chronic obstructive pulmonary disease (COPD) independent of cigarette smoke exposure. Previous studies have demonstrated that decreased peripheral leukocyte telomere length is associated with HIV, suggesting an accelerated aging phenomenon. We demonstrate that this process of telomere shortening also occurs in the lungs, with significant decreases in telomere length observed in small airway epithelial cells collected during bronchoscopy. Molecular evidence of accelerated aging in the small airway epithelium of persons living with HIV may be one clue into the predisposition for chronic lung disease observed in this population.
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Affiliation(s)
- Stella Xu
- Centre for Heart Lung Innovation, University of British Columbia, Vancouver, Canada
| | | | - Tawimas Shaipanich
- Division of Respiratory Medicine, University of British Columbia, Vancouver, Canada
| | - Stephen Lam
- British Columbia Cancer Agency, Vancouver, Canada.,Division of Respiratory Medicine, University of British Columbia, Vancouver, Canada
| | - Wan Lam
- British Columbia Cancer Agency, Vancouver, Canada
| | - Julio S Montaner
- BC Centre for Excellence in HIV/AIDS, University of British Columbia, Vancouver, Canada
| | - Don D Sin
- Centre for Heart Lung Innovation, University of British Columbia, Vancouver, Canada.,Division of Respiratory Medicine, University of British Columbia, Vancouver, Canada
| | - S F Paul Man
- Centre for Heart Lung Innovation, University of British Columbia, Vancouver, Canada.,Division of Respiratory Medicine, University of British Columbia, Vancouver, Canada
| | - Janice M Leung
- Centre for Heart Lung Innovation, University of British Columbia, Vancouver, Canada. .,Division of Respiratory Medicine, University of British Columbia, Vancouver, Canada.
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Booth JL, Duggan ES, Patel VI, Wu W, Burian DM, Hutchings DC, White VL, Coggeshall KM, Dozmorov MG, Metcalf JP. Gene expression profiling of primary human type I alveolar epithelial cells exposed to Bacillus anthracis spores reveals induction of neutrophil and monocyte chemokines. Microb Pathog 2018; 121:9-21. [PMID: 29704667 DOI: 10.1016/j.micpath.2018.04.039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2017] [Revised: 02/12/2018] [Accepted: 04/22/2018] [Indexed: 11/18/2022]
Abstract
The lung is the entry site for Bacillus anthracis in inhalation anthrax, the most deadly form of the disease. Spores must escape through the alveolar epithelial cell (AEC) barrier and migrate to regional lymph nodes, germinate and enter the circulatory system to cause disease. Several mechanisms to explain alveolar escape have been postulated, and all these tacitly involve the AEC barrier. In this study, we incorporate our primary human type I AEC model, microarray and gene enrichment analysis, qRT-PCR, multiplex ELISA, and neutrophil and monocyte chemotaxis assays to study the response of AEC to B. anthracis, (Sterne) spores at 4 and 24 h post-exposure. Spore exposure altered gene expression in AEC after 4 and 24 h and differentially expressed genes (±1.3 fold, p ≤ 0.05) included CCL4/MIP-1β (4 h), CXCL8/IL-8 (4 and 24 h) and CXCL5/ENA-78 (24 h). Gene enrichment analysis revealed that pathways involving cytokine or chemokine activity, receptor binding, and innate immune responses to infection were prominent. Microarray results were confirmed by qRT-PCR and multiplex ELISA assays. Chemotaxis assays demonstrated that spores induced the release of biologically active neutrophil and monocyte chemokines, and that CXCL8/IL-8 was the major neutrophil chemokine. The small or sub-chemotactic doses of CXCL5/ENA-78, CXCL2/GROβ and CCL20/MIP-3α may contribute to chemotaxis by priming effects. These data provide the first whole transcriptomic description of the human type I AEC initial response to B. anthracis spore exposure. Taken together, our findings contribute to an increased understanding of the role of AEC in the pathogenesis of inhalational anthrax.
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Affiliation(s)
- J Leland Booth
- Pulmonary and Critical Care Division of the Department of Internal Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA.
| | - Elizabeth S Duggan
- Pulmonary and Critical Care Division of the Department of Internal Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA.
| | - Vineet I Patel
- Pulmonary and Critical Care Division of the Department of Internal Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA; Department of Microbiology and Immunology, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA.
| | - Wenxin Wu
- Pulmonary and Critical Care Division of the Department of Internal Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA.
| | - Dennis M Burian
- Civil Aerospace Medical Institute, Office of Aviation Medicine, Federal Aviation Administration, Oklahoma City, OK 73169, USA.
| | | | - Vicky L White
- Civil Aerospace Medical Institute, Office of Aviation Medicine, Federal Aviation Administration, Oklahoma City, OK 73169, USA.
| | - K Mark Coggeshall
- Immunobiology and Cancer Program, Oklahoma Medical Research Foundation, Oklahoma City, OK 73104, USA.
| | - Mikhail G Dozmorov
- Department of Biostatistics, Virginia Commonwealth University, Richmond, VA 23298, USA.
| | - Jordan P Metcalf
- Pulmonary and Critical Care Division of the Department of Internal Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA; Department of Microbiology and Immunology, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA.
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Kulkarni HS, Liszewski MK, Brody SL, Atkinson JP. The complement system in the airway epithelium: An overlooked host defense mechanism and therapeutic target? J Allergy Clin Immunol 2018; 141:1582-1586.e1. [PMID: 29339260 DOI: 10.1016/j.jaci.2017.11.046] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2017] [Revised: 11/02/2017] [Accepted: 11/13/2017] [Indexed: 12/13/2022]
Affiliation(s)
- Hrishikesh S Kulkarni
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Washington University in St Louis, St Louis, Mo; Division of Rheumatology, Department of Medicine, Washington University in St Louis, St Louis, Mo
| | - M Kathryn Liszewski
- Division of Rheumatology, Department of Medicine, Washington University in St Louis, St Louis, Mo
| | - Steven L Brody
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Washington University in St Louis, St Louis, Mo
| | - John P Atkinson
- Division of Rheumatology, Department of Medicine, Washington University in St Louis, St Louis, Mo.
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Barboza ML, Barbosa ACB, Spina GD, Sperandio EF, Arantes RL, Gagliardi ARDT, Romiti M, Dourado VZ. Association between physical activity in daily life and pulmonary function in adult smokers. J Bras Pneumol 2017; 42:130-5. [PMID: 27167434 PMCID: PMC4853066 DOI: 10.1590/s1806-37562015000000102] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2015] [Accepted: 11/30/2015] [Indexed: 07/27/2024] Open
Abstract
Objective: To determine whether the level of physical activity in daily life (PADL) is associated with pulmonary function in adult smokers. Methods: We selected 62 adult smokers from among the participants of an epidemiological study conducted in the city of Santos, Brazil. The subjects underwent forced spirometry for pulmonary function assessment. The level of PADL was assessed by the International Physical Activity Questionnaire and triaxial accelerometry, the device being used for seven days. The minimum level of PADL, in terms of quantity and intensity, was defined as 150 min/week of moderate to vigorous physical activity. Correlations between the studied variables were tested with Pearson's or Spearman's correlation coefficient, depending on the distribution of the variables. We used linear multiple regression in order to analyze the influence of PADL on the spirometric variables. The level of significance was set at 5%. Results: Evaluating all predictors, corrected for confounding factors, and using pulmonary function data as outcome variables, we found no significant associations between physical inactivity, as determined by accelerometry, and spirometric indices. The values for FVC were lower among the participants with arterial hypertension, and FEV1/FVC ratios were lower among those with diabetes mellitus. Obese participants and those with dyslipidemia presented with lower values for FVC and FEV1. Conclusions: Our results suggest that there is no consistent association between physical inactivity and pulmonary function in adult smokers. Smoking history should be given special attention in COPD prevention strategies, as should cardiovascular and metabolic comorbidities.
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Affiliation(s)
| | | | | | | | | | | | - Marcello Romiti
- Instituto de Medicina Cardiovascular Angiocorpore, Santos, SP, Brasil
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Martinez CH, Diaz AA, Meldrum C, Curtis JL, Cooper CB, Pirozzi C, Kanner RE, Paine R, Woodruff PG, Bleecker ER, Hansel NN, Barr RG, Marchetti N, Criner GJ, Kazerooni EA, Hoffman EA, Ross BD, Galban CJ, Cigolle CT, Martinez FJ, Han MK. Age and Small Airway Imaging Abnormalities in Subjects with and without Airflow Obstruction in SPIROMICS. Am J Respir Crit Care Med 2017; 195:464-472. [PMID: 27564413 PMCID: PMC5378423 DOI: 10.1164/rccm.201604-0871oc] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2016] [Accepted: 08/25/2016] [Indexed: 11/16/2022] Open
Abstract
RATIONALE Aging is associated with reduced FEV1 to FVC ratio (FEV1/FVC), hyperinflation, and alveolar enlargement, but little is known about how age affects small airways. OBJECTIVES To determine if chest computed tomography (CT)-assessed functional small airway would increase with age, even among asymptomatic individuals. METHODS We used parametric response mapping analysis of paired inspiratory/expiratory CTs to identify functional small airway abnormality (PRMFSA) and emphysema (PRMEMPH) in the SPIROMICS (Subpopulations and Intermediate Outcome Measures in COPD Study) cohort. Using adjusted linear regression models, we analyzed associations between PRMFSA and age in subjects with or without airflow obstruction. We subdivided participants with normal spirometry based on respiratory-related impairment (6-minute-walk distance <350 m, modified Medical Research Council ≥2, chronic bronchitis, St. George's Respiratory Questionnaire >25, respiratory events requiring treatment [antibiotics and/or steroids or hospitalization] in the year before enrollment). MEASUREMENTS AND MAIN RESULTS Among 580 never- and ever-smokers without obstruction or respiratory impairment, PRMFSA increased 2.7% per decade, ranging from 3.6% (ages 40-50 yr) to 12.7% (ages 70-80 yr). PRMEMPH increased nonsignificantly (0.1% [ages 40-50 yr] to 0.4% [ages 70-80 yr]; P = 0.34). Associations were similar among nonobstructed individuals with respiratory-related impairment. Increasing PRMFSA in subjects without airflow obstruction was associated with increased FVC (P = 0.004) but unchanged FEV1 (P = 0.94), yielding lower FEV1/FVC ratios (P < 0.001). Although emphysema was also significantly associated with lower FEV1/FVC (P = 0.04), its contribution relative to PRMFSA in those without airflow obstruction was limited by its low burden. CONCLUSIONS In never- and ever-smokers without airflow obstruction, aging is associated with increased FVC and CT-defined functional small airway abnormality regardless of respiratory symptoms.
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Affiliation(s)
| | - Alejandro A. Diaz
- Division of Pulmonary and Critical Care Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts
| | | | - Jeffrey L. Curtis
- Division of Pulmonary and Critical Care Medicine
- Pulmonary and Critical Care Medicine Section, Medical Service, and
| | - Christopher B. Cooper
- Division of Pulmonary and Critical Care Medicine, University of California Los Angeles Medical Center, Los Angeles, California
| | - Cheryl Pirozzi
- Division of Pulmonary and Critical Care Medicine, University of Utah, Salt Lake City, Utah
| | - Richard E. Kanner
- Division of Pulmonary and Critical Care Medicine, University of Utah, Salt Lake City, Utah
| | - Robert Paine
- Division of Pulmonary and Critical Care Medicine, University of Utah, Salt Lake City, Utah
- Division of Pulmonary and Critical Care Medicine, Veterans Affairs Medical Center, Salt Lake City, Utah
| | - Prescott G. Woodruff
- Division of Pulmonary and Critical Care Medicine, University of California San Francisco, San Francisco, California
| | - Eugene R. Bleecker
- Division of Pulmonary and Critical Care Medicine, Wake Forest University, Winston-Salem, North Carolina
| | - Nadia N. Hansel
- Division of Pulmonary and Critical Care Medicine, Johns Hopkins University, Baltimore, Maryland
| | - R. Graham Barr
- Division of Pulmonary, Allergy and Critical Care Medicine, Columbia University, New York, New York
| | - Nathaniel Marchetti
- Department of Thoracic Medicine and Surgery, Temple University School of Medicine, Philadelphia, Pennsylvania
| | - Gerard J. Criner
- Department of Thoracic Medicine and Surgery, Temple University School of Medicine, Philadelphia, Pennsylvania
| | | | - Eric A. Hoffman
- Department of Radiology and Biomedical Engineering, University of Iowa, Iowa City, Iowa; and
| | - Brian D. Ross
- Department of Radiology, and
- Center for Molecular Imaging, University of Michigan, Ann Arbor, Michigan
| | - Craig J. Galban
- Department of Radiology, and
- Center for Molecular Imaging, University of Michigan, Ann Arbor, Michigan
| | - Christine T. Cigolle
- Geriatric Research and Education Clinical Center, VA Ann Arbor Healthcare System, Ann Arbor, Michigan
- Department of Family Medicine, University of Michigan Health System, Ann Arbor, Michigan
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Lv Y, Zhang Y, Li X, Ren X, Wang M, Tian S, Hou P, Shi B, Yang Q. Long telomere length predicts poor clinical outcome in esophageal cancer patients. Pathol Res Pract 2016; 213:113-118. [PMID: 28027815 DOI: 10.1016/j.prp.2016.11.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/30/2016] [Revised: 11/10/2016] [Accepted: 11/11/2016] [Indexed: 12/26/2022]
Abstract
BACKGROUND Abnormal telomere length is widely reported in various human cancers, and it is considered to be an important hallmark of cancer. However, there is remarkably little consensus on the value of telomere length in the prognostic evaluation of esophageal cancers. Here, we attempted to determine the association of variable telomere length with clinical outcome of esophageal cancer patients. MATERIALS AND METHODS Using real-time quantitative PCR, we examined relative telomere lengths (RTL) in a cohort of esophageal cancer and normal esophageal tissues, and statistically investigated the association between RTL and clinical outcomes of esophageal cancer patients. RESULTS The majority of esophageal cancers in this study had longer RTLs as compared to adjacent non-tumor tissues. Enhanced tumor RTL was associated with smoking habit, poor differentiation, advanced tumor stage, lymph node metastasis and cancer related death. In particular, a close relationship between longer RTL and poor survival was fully demonstrated by using cox regression and Kaplan-Maier survival curves. CONCLUSIONS We found frequent telomere elongation in esophageal cancer tissues, and demonstrated longer RTL may be an independent poor prognostic factor for esophageal cancer patients.
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Affiliation(s)
- Yanyan Lv
- Department of Endocrinology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, People's Republic of China; Department of Rheumatology, Xi'an No. 5 Hospital, Xi'an 710082, People's Republic of China.
| | - Yong Zhang
- Department of Thoracic Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, People's Republic of China.
| | - Xinru Li
- Department of Endocrinology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, People's Republic of China.
| | - Xiaojuan Ren
- Department of Endocrinology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, People's Republic of China.
| | - Meichen Wang
- Department of Endocrinology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, People's Republic of China.
| | - Sijia Tian
- Department of Endocrinology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, People's Republic of China.
| | - Peng Hou
- Department of Endocrinology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, People's Republic of China; Key Laboratory for Tumor Precision Medicine of Shaanxi Province, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, People's Republic of China.
| | - Bingyin Shi
- Department of Endocrinology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, People's Republic of China; Key Laboratory for Tumor Precision Medicine of Shaanxi Province, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, People's Republic of China.
| | - Qi Yang
- Department of Endocrinology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, People's Republic of China; Key Laboratory for Tumor Precision Medicine of Shaanxi Province, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, People's Republic of China.
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50
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Verde Z, González-Moro JMR, Chicharro LM, Reinoso-Barbero L, Bandrés F, Gómez-Gallego F, Santiago C. A Paradox: α-Klotho Levels and Smoking Intensity. Lung 2016; 195:53-57. [PMID: 27752830 DOI: 10.1007/s00408-016-9944-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2016] [Accepted: 09/12/2016] [Indexed: 11/26/2022]
Abstract
Reports regarding smoking differences in α-klotho expression have provided conflicting results. In the current study we focused on the influence of smoking intensity to serum levels of the aging molecule α-klotho in healthy smokers. 40 middle aged healthy smokers without airway obstruction or restriction were selected for the analysis. Serum levels of soluble α-klotho were significantly higher in heavy smokers (P < 0.001). These results are in agreement with the possibility that α-klotho acts as anti-inflammatory molecule and strengthen the hypothesis that an increase of serum levels of α-klotho might be a compensatory response to smoking stress in healthy population.
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Affiliation(s)
- Zoraida Verde
- Department of Biomedical Sciences, Universidad Europea, 28670, Villaviciosa de Odón, Madrid, Spain.
| | | | - Luis M Chicharro
- Cátedra Complutense Diagnostic and Innovation, Universidad Complutense, Madrid, Spain
| | - Luis Reinoso-Barbero
- Department of Biomedical Sciences, Universidad Europea, 28670, Villaviciosa de Odón, Madrid, Spain
- Occupational Medicine, Grupo Banco Popular, Madrid, Spain
| | - Fernando Bandrés
- Department of Toxicology and Health Sanitary, Universidad Complutense, Madrid, Spain
| | | | - Catalina Santiago
- School of Doctoral Studies & Research, Universidad Europea, Madrid, Spain
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