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Biener L, Frisch BC, Skowasch D, Pizarro C, Budimovska A, Nickenig G, Stumpf MJ, Schahab N, Schaefer C. Blood eosinophil count is associated with early atherosclerotic artery changes in asthma. BMC Pulm Med 2024; 24:509. [PMID: 39394116 PMCID: PMC11470539 DOI: 10.1186/s12890-024-03322-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2024] [Accepted: 10/03/2024] [Indexed: 10/13/2024] Open
Abstract
OBJECTIVE Asthma is linked to atherosclerosis, yet the underlying mediators remain elusive. Eosinophils may contribute to both asthmatic and atherosclerotic inflammation. Hence, this study aimed to explore the potential associations of eosinophils with artery changes among patients with asthma. METHODS We assessed strain values of the common carotid arteries (CCAs) via vascular speckle tracking and compared asthma patients with low (< 300/µl) and high (≥ 300/µl) blood eosinophil counts (BEC). RESULTS We enrolled 100 patients, 42 with a BEC of < 300 and 58 with a BEC of ≥ 300 n/µl. Patients with high BEC exhibited more severe disease, characterized, e.g., by a higher frequency of acute exacerbations (1.3 ± 2.1 vs. 2.6 ± 2.4 n/year, p = 0.005). Both groups presented similar profiles in terms of conventional cardiovascular risk. The high BEC group demonstrated elevated arterial stiffness, reflected by reduced radial strain (mean radial strain of the right CCA: 2.7 ± 1.4% for BEC ≥ 300 n/µl vs. 3.5 ± 1.7% for BEC < 300 n/µl, p = 0.008; left CCA: 2.6 ± 1.4% vs. 4.1 ± 2.2%, p < 0.001). A weak yet statistically significant negative correlation was observed between BEC and radial strain for the right CCA (R2 = 0.131, b=-0.001, p = 0.001) and left CCA (R2 = 0.086, b=-0.001, p = 0.015). However, the prevalence of cerebrovascular disease was similar in both groups (31,0% vs. 50,0%, p = 0.057). CONCLUSION We identified a correlation between BEC and vascular stiffness, which supports the hypothesis that eosinophils may promote atherosclerosis. CLINICAL TRIAL NUMBER Due to the exploratory and predominantly retrospective nature of the study, trial registration was not conducted. The only prospective procedure conducted was the angiological sonography to evaluate the current state. No ensuing health-related interventions were performed specifically for this study.
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Affiliation(s)
- Leonie Biener
- Department of Internal Medicine II, Cardiology, Pneumology and Angiology, University Hospital Bonn, Bonn, Germany.
| | - Ben Christoph Frisch
- Department of Internal Medicine II, Cardiology, Pneumology and Angiology, University Hospital Bonn, Bonn, Germany
| | - Dirk Skowasch
- Department of Internal Medicine II, Cardiology, Pneumology and Angiology, University Hospital Bonn, Bonn, Germany
| | - Carmen Pizarro
- Department of Internal Medicine II, Cardiology, Pneumology and Angiology, University Hospital Bonn, Bonn, Germany
| | - Andrea Budimovska
- Department of Internal Medicine II, Cardiology, Pneumology and Angiology, University Hospital Bonn, Bonn, Germany
| | - Georg Nickenig
- Department of Internal Medicine II, Cardiology, Pneumology and Angiology, University Hospital Bonn, Bonn, Germany
| | - Max Jonathan Stumpf
- Department of Internal Medicine II, Cardiology, Pneumology and Angiology, University Hospital Bonn, Bonn, Germany
| | - Nadjib Schahab
- Department of Internal Medicine II, Cardiology, Pneumology and Angiology, University Hospital Bonn, Bonn, Germany
| | - Christian Schaefer
- Department of Internal Medicine II, Cardiology, Pneumology and Angiology, University Hospital Bonn, Bonn, Germany
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Russo M, Camilli M, La Vecchia G, Rinaldi R, Bonanni A, Natale MP, Salzillo C, Torre I, Trani C, Crea F, Montone RA. Atherosclerotic Coronary Plaque Features in Patients With Chronic Obstructive Pulmonary Disease and Acute Coronary Syndrome. Am J Cardiol 2024; 224:36-45. [PMID: 38871157 DOI: 10.1016/j.amjcard.2024.06.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/15/2024] [Revised: 05/02/2024] [Accepted: 06/05/2024] [Indexed: 06/15/2024]
Abstract
Previous studies reported a robust relation between chronic obstructive pulmonary disease (COPD) and coronary artery disease (CAD). Systemic inflammation has been proposed as possible pathogenetic mechanism linking these 2 entities, although data on atherosclerotic coronary features in COPD patients are lacking. We studied atherosclerotic coronary plaque features in COPD patients presenting with acute coronary syndrome (ACS) using optical coherence tomography (OCT). ACS patients who underwent intracoronary OCT imaging of the culprit vessel were enrolled. Coronary plaque characteristics and OCT-defined macrophage infiltration (MØI) were assessed by OCT. ACS patients were divided into 2 groups according to the presence of an established diagnosis of COPD, and plaque features at the culprit site and along the culprit vessel were compared between the groups. Of 146 ACS patients (mean age:66.1 ± 12.7 years, 109 men), 47 (32.2%) had COPD. Patients with COPD had significantly higher prevalence of MØI (78.7% vs 54.5%, p = 0.005) and thin cap fibroatheroma (TCFA) (48.9% vs 22.2%, p = 0.001) at the culprit site. In the multivariate logistic regression, COPD was independently associated with MØI (odds ratio [OR] 21.209, 95% confidence interval [CI] 1.679 to 267.910, p = 0.018) and TCFA at the culprit site (OR 5.345, 95% CI 1.386 to 20.616, p = 0.015). Similarly, COPD was independently associated with both MØI (OR 3.570, 95% CI 1.472 to 8.658, p = 0.005) and TCFA (OR 4.088, 95% CI 1.584 to 10.554, p = 0.004) along the culprit vessel. In conclusion, in ACS patients who underwent OCT imaging of the culprit vessel, COPD was an independent predictor of plaque inflammation and vulnerability. These results may suggest that a higher inflammatory milieu in COPD patients might enhance local coronary inflammation, promoting CAD development and plaque vulnerability.
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Affiliation(s)
- Michele Russo
- Department of Cardiovascular and Pulmonary Sciences, Catholic University of the Sacred Heart, Rome, Italy; Department of Cardiology, S. Maria dei Battuti Hospital, Conegliano, Italy
| | - Massimiliano Camilli
- Department of Cardiovascular and Pulmonary Sciences, Catholic University of the Sacred Heart, Rome, Italy; Department of Cardiovascular Medicine, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Giulia La Vecchia
- Department of Cardiovascular and Pulmonary Sciences, Catholic University of the Sacred Heart, Rome, Italy
| | - Riccardo Rinaldi
- Department of Cardiovascular and Pulmonary Sciences, Catholic University of the Sacred Heart, Rome, Italy
| | - Alice Bonanni
- Department of Cardiovascular and Pulmonary Sciences, Catholic University of the Sacred Heart, Rome, Italy
| | - Matteo Pio Natale
- Department of Respiratory Disease, University of Foggia, Foggia, Italy
| | - Carmine Salzillo
- Department of Cardiovascular and Pulmonary Sciences, Catholic University of the Sacred Heart, Rome, Italy
| | - Ilaria Torre
- Department of Cardiovascular and Pulmonary Sciences, Catholic University of the Sacred Heart, Rome, Italy
| | - Carlo Trani
- Department of Cardiovascular and Pulmonary Sciences, Catholic University of the Sacred Heart, Rome, Italy; Department of Cardiovascular Medicine, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Filippo Crea
- Department of Cardiovascular and Pulmonary Sciences, Catholic University of the Sacred Heart, Rome, Italy; Department of Cardiovascular Medicine, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Rocco A Montone
- Department of Cardiovascular and Pulmonary Sciences, Catholic University of the Sacred Heart, Rome, Italy; Department of Cardiovascular Medicine, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy.
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Inoue Y, Adachi M, Maruyama Y. Investigation of arterial–cardiac–pulmonary interaction. Heart Vessels 2019; 34:1325-1331. [DOI: 10.1007/s00380-019-01362-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/24/2018] [Accepted: 02/15/2019] [Indexed: 11/27/2022]
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Tuleta I, Skowasch D, Aurich F, Eckstein N, Schueler R, Pizarro C, Schahab N, Nickenig G, Schaefer C, Pingel S. Asthma is associated with atherosclerotic artery changes. PLoS One 2017; 12:e0186820. [PMID: 29073174 PMCID: PMC5658104 DOI: 10.1371/journal.pone.0186820] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2017] [Accepted: 10/09/2017] [Indexed: 12/18/2022] Open
Abstract
Asthma is a chronic airway inflammation with a potential systemic impact. Atherosclerosis is a chronic inflammatory artery disease. The aim of our study was to prove if there is a correlation between the occurrence of asthma and increased atherosclerotic vessel disorders. Vessel status was compared between mild-to-moderate, severe allergic asthma and matched controls. Measurements of artery stiffness were calculated by central pulse wave velocity, ultrasonographic strain imaging and ankle-brachial index. Atherosclerotic plaque burden was assessed by colour-coded duplex sonography. Additionally, analysis of cardiovascular and asthma blood markers was conducted. Arterial stiffness expressed as an increased central pulse wave velocity and decreased circumferential and radial strains as well as the prevalence of media sclerosis were significantly higher among asthma patients compared to controls. Atherosclerotic plaque burden was relevantly increased in asthma groups vs. controls (severe asthma: 43.1%, mild-to-moderate asthma: 25.0%, control: 14.3% of study participants). Except for the elevated IgE and fibrinogen concentrations as well as leukocyte number there were no relevant differences in the blood parameters between the groups. Allergic asthma is associated with distinct atherosclerotic artery changes compared to the respectively matched control collective. The severity of asthma correlates with more pronounced pathological vessel alternations.
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Affiliation(s)
- Izabela Tuleta
- Department of Internal Medicine II–Cardiology, Pulmonology and Angiology, University of Bonn, Bonn, Germany
- * E-mail:
| | - Dirk Skowasch
- Department of Internal Medicine II–Cardiology, Pulmonology and Angiology, University of Bonn, Bonn, Germany
| | - Florian Aurich
- Department of Internal Medicine II–Cardiology, Pulmonology and Angiology, University of Bonn, Bonn, Germany
| | - Nicolas Eckstein
- Department of Internal Medicine II–Cardiology, Pulmonology and Angiology, University of Bonn, Bonn, Germany
| | - Robert Schueler
- Department of Internal Medicine II–Cardiology, Pulmonology and Angiology, University of Bonn, Bonn, Germany
| | - Carmen Pizarro
- Department of Internal Medicine II–Cardiology, Pulmonology and Angiology, University of Bonn, Bonn, Germany
| | - Nadjib Schahab
- Department of Internal Medicine II–Cardiology, Pulmonology and Angiology, University of Bonn, Bonn, Germany
| | - Georg Nickenig
- Department of Internal Medicine II–Cardiology, Pulmonology and Angiology, University of Bonn, Bonn, Germany
| | - Christian Schaefer
- Department of Internal Medicine II–Cardiology, Pulmonology and Angiology, University of Bonn, Bonn, Germany
| | - Simon Pingel
- Department of Internal Medicine II–Cardiology, Pulmonology and Angiology, University of Bonn, Bonn, Germany
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Abstract
BACKGROUND Previous studies have demonstrated that asthma might be associated with an increase in cardiovascular disease (CVD) and death. However, this relationship differs by gender. OBJECTIVES To systematically evaluate the association of asthma on the incidence of CVD and death in cohort studies. DESIGN Fixed and random effects models were used to calculate risk estimates in a meta-analysis. Potential publication bias was calculated using a funnel plot, Begg's rank correlation test, and Egger's linear regression test. SEARCH STRATEGY We searched the PubMed and Embase databases for studies that examined the relationship between asthma and CVD or all-cause mortality. SELECTION CRITERIA Prospective and retrospective cohort studies. RESULTS Ten studies containing 406 426 participants were included. The summary relative risk (95% confi-dence interval, CI) for patients with asthma was 1.33 (95% CI: 1.15-1.53), for CVD in women, it was 1.55 (95% CI: 1.20-2.00), for CVD in men it was 1.20 (95% CI: 0.92-1.56), and for all-cause mortality in both genders it was 1.36 (95% CI: 1.01-1.83). These findings remained consistent after sensitivity analysis. CONCLUSION The results indicate that asthma was associated with an increased risk of CVD and all-cause mortality. SYSTEMATIC REVIEW REGISTRATION NUMBER Systematic review was not registered.
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Affiliation(s)
| | | | - Xiangjun Yang
- Dr. Xiangjun Yang,, NO. 188, Shizi Street, Suzhou, 215006, China, T: +86 5121810, , ORCID: http://orcid.org/0000-0001-7309-3111
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Foudi N, Badi A, Amrane M, Hodroj W. Asthma causes inflammation of human pulmonary arteries and decreases vasodilatation induced by prostaglandin I 2 analogs. J Asthma 2017; 54:1012-1018. [PMID: 28306357 DOI: 10.1080/02770903.2017.1292282] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
OBJECTIVE Asthma is a chronic inflammatory disease associated with increased cardiovascular events. This study assesses the presence of inflammation and the vascular reactivity of pulmonary arteries in patients with acute asthma. METHODS Rings of human pulmonary arteries obtained from non-asthmatic and asthmatic patients were set up in organ bath for vascular tone monitoring. Reactivity was induced by vasoconstrictor and vasodilator agents. Protein expression of inflammatory markers was detected by western blot. Prostanoid releases and cyclic adenosine monophosphate (cAMP) levels were quantified using specific enzymatic kits. RESULTS Protein expression of cluster of differentiation 68, intercellular adhesion molecule-1, vascular cell adhesion molecule-1, and cyclooxygenase-2 was significantly increased in arteries obtained from asthmatic patients. These effects were accompanied by an alteration of vasodilatation induced by iloprost and treprostinil, a decrease in cAMP levels and an increase in prostaglandin (PG) E2 and PGI2 synthesis. The use of forskolin (50 µmol/L) has restored the vasodilatation and cAMP release. No difference was observed between the two groups in reactivity induced by norepinephrine, angiotensin II, PGE2, KCl, sodium nitroprusside, and acetylcholine. CONCLUSION Acute asthma causes inflammation of pulmonary arteries and decreases vasodilation induced by PGI2 analogs through the impairment of cAMP pathway.
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Affiliation(s)
- Nabil Foudi
- a Laboratory of Cardiovascular Genetic and Nutritional Diseases , University Setif 1 , Algeria.,b Faculty of Medicine, University Setif 1 , Algeria
| | - Aouatef Badi
- b Faculty of Medicine, University Setif 1 , Algeria
| | - Mounira Amrane
- a Laboratory of Cardiovascular Genetic and Nutritional Diseases , University Setif 1 , Algeria.,b Faculty of Medicine, University Setif 1 , Algeria
| | - Wassim Hodroj
- c Laboratory of Functional Genomics in Atherothrombosis , Lyon , France
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Pulmonary Remodeling in Equine Asthma: What Do We Know about Mediators of Inflammation in the Horse? Mediators Inflamm 2016; 2016:5693205. [PMID: 28053371 PMCID: PMC5174180 DOI: 10.1155/2016/5693205] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2016] [Revised: 10/05/2016] [Accepted: 10/12/2016] [Indexed: 12/31/2022] Open
Abstract
Equine inflammatory airway disease (IAD) and recurrent airway obstruction (RAO) represent a spectrum of chronic inflammatory disease of the airways in horses resembling human asthma in many aspects. Therefore, both are now described as severity grades of equine asthma. Increasing evidence in horses and humans suggests that local pulmonary inflammation is influenced by systemic inflammatory processes and the other way around. Inflammation, coagulation, and fibrinolysis as well as extracellular remodeling show close interactions. Cytology of bronchoalveolar lavage fluid and tracheal wash is commonly used to evaluate the severity of local inflammation in the lung. Other mediators of inflammation, like interleukins involved in the chemotaxis of neutrophils, have been studied. Chronic obstructive pneumopathies lead to remodeling of bronchial walls and lung parenchyma, ultimately causing fibrosis. Matrix metalloproteinases (MMPs) are discussed as the most important proteolytic enzymes during remodeling in human medicine and increasing evidence exists for the horse as well. A systemic involvement has been shown for severe equine asthma by increased acute phase proteins like serum amyloid A and haptoglobin in peripheral blood during exacerbation. Studies focusing on these and further possible inflammatory markers for chronic respiratory disease in the horse are discussed in this review of the literature.
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Özkan EA, Serin Hİ, Khosroshahi HE, Kılıç M, Ekim M, Beysel P, Geçit UA, Domur E. Arterial Stiffness, Distensibility, and Strain in Asthmatic Children. Med Sci Monit 2016; 22:251-7. [PMID: 26803723 PMCID: PMC4731016 DOI: 10.12659/msm.895502] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND We hypothesized that since asthma is a chronic inflammatory disease, it could lead to the early development of atherosclerosis in childhood-onset asthma. The aim of this study was to investigate arterial stiffness, distensibility, and strain of different peripheral arteries, the parameters of which can be used to detect atherosclerosis in asthmatic children. MATERIAL/METHODS We studied 22 pediatric patients with asthma and 18 healthy children. Fasting blood glucose and cholesterol levels were evaluated to exclude children with diabetes and hyperlipidemia, which are risk factors for atherosclerosis. Renal, carotid, and brachial arteries diameters were measured. Using the measured data, stiffness, distensibility, and strain of the arteries of all children were calculated. RESULTS Pulse pressure, systolic and diastolic blood pressure, heart rate, cholesterols, and glucose levels of the obese individuals were similar to the controls. In carotid arteries there were no statistical differences regarding stiffness, distensibility, and strain. According to multiple ANCOVA analysis, distensibility and strain of right and left brachial arteries and right renal artery were higher, whereas right renal artery stiffness was lower in asthmatic children than in controls. Approximately one-fifth of the change in the left and right brachial arteries and right renal artery distensibility and strain and a small portion of the change in the right renal artery stiffness were associated with asthma. In contrast, left renal artery distensibility, strain, and stiffness were not associated with asthma. CONCLUSIONS Peripheral arteries had higher distensibility and strain, and lower stiffness in asthmatic children than in controls.
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Affiliation(s)
- Esra Akyüz Özkan
- Department of Pediatrics, Bozok University Medical Faculty, Yozgat, Turkey
- Corresponding Author: Esra Akyüz Özkan, e-mail:
| | | | - Hashem E. Khosroshahi
- Department of Pediatric Cardiology, Bozok University Medical Faculty, Yozgat, Turkey
| | - Mahmut Kılıç
- Department of Public Health, Bozok University Medical Faculty, Yozgat, Turkey
| | - Meral Ekim
- Department of Biochemistry, Bozok University Medical Faculty, Yozgat, Turkey
| | - Perihan Beysel
- Department of Pediatrics, Bozok University Medical Faculty, Yozgat, Turkey
| | - U. Aliye Geçit
- Department of Pediatrics, Bozok University Medical Faculty, Yozgat, Turkey
| | - Esra Domur
- Department of Pediatrics, Bozok University Medical Faculty, Yozgat, Turkey
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Madsen AM, Thilsing T, Bælum J, Garde AH, Vogel U. Occupational exposure levels of bioaerosol components are associated with serum levels of the acute phase protein Serum Amyloid A in greenhouse workers. Environ Health 2016; 15:9. [PMID: 26792395 PMCID: PMC4719338 DOI: 10.1186/s12940-016-0090-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2015] [Accepted: 01/10/2016] [Indexed: 05/19/2023]
Abstract
BACKGROUND Occupational exposure to particles may be associated with increased inflammation of the airways. Animal experiments suggest that inhaled particles also induce a pulmonary acute phase response, leading to systemic circulation of acute phase proteins. Greenhouse workers are exposed to elevated levels of bioaerosols. The objective of this study is to assess whether greenhouse workers personal exposure to bioaerosol components was associated with serum levels of the acute phase proteins Serum Amyloid A (SAA) and C-reactive protein (CRP). METHODS SAA and CRP levels were determined in serum sampled repeatedly from 33 greenhouse workers. Blood was drawn repeatedly on Mondays and Thursdays during work weeks. Acute phase protein levels were compared to levels in a comparison group of 42 people and related to individual exposure levels to endotoxin, dust, bacteria, fungi and β-glucan. RESULTS Serum levels of SAA and CRP were not significantly different in greenhouse workers and a reference group, or on the two work days. In a mixed model, SAA levels were positively associated with endotoxin exposure levels (p = 0.0007). Results for fungi were not clear. CRP levels were positively associated with endotoxin exposures (p = 0.022). Furthermore, when workers were categorized into three groups based on SAA and CRP serum levels endotoxin exposure was highest in the group with the highest SAA levels and in the group with middle and highest CRP levels. SAA and CRP levels were elevated in workers with asthma. CONCLUSION Greenhouse workers did not have elevated serum levels of SAA and CRP compared to a reference group. However, occupational exposure to endotoxin was positively associated with serum levels of the acute phase proteins SAA and CRP. Preventive measures to reduce endotoxin exposure may be beneficial.
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Affiliation(s)
- Anne Mette Madsen
- National Research Centre for the Working Environment, Lersø Parkallé 105, DK-2100, Copenhagen, Denmark.
| | - Trine Thilsing
- Research Unit for Occupational and Environmental Medicine, Institute of Clinical Research, University of Southern Denmark, DK-5000, Odense C, Denmark.
- Research Unit for General Practice, Department of Public Health, University of Southern Denmark, DK-5000, Odense C, Denmark.
| | - Jesper Bælum
- Research Unit for Occupational and Environmental Medicine, Institute of Clinical Research, University of Southern Denmark, DK-5000, Odense C, Denmark.
- Research Unit for General Practice, Department of Public Health, University of Southern Denmark, DK-5000, Odense C, Denmark.
- OPEN, Odense Patient Exploratory Network, Institute of Clinical Research, SDU, Odense C, Denmark.
| | - Anne Helene Garde
- National Research Centre for the Working Environment, Lersø Parkallé 105, DK-2100, Copenhagen, Denmark.
| | - Ulla Vogel
- National Research Centre for the Working Environment, Lersø Parkallé 105, DK-2100, Copenhagen, Denmark.
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Yiallouros PK, Savva SC, Kolokotroni O, Dima K, Zerva A, Kouis P, Bousquet J, Middleton N. Asthma: the role of low high-density-lipoprotein cholesterol in childhood and adolescence. Int Arch Allergy Immunol 2014; 165:91-9. [PMID: 25377880 DOI: 10.1159/000368405] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2014] [Accepted: 09/12/2014] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Several studies have examined the relationship of asthma with serum dyslipidemia and reported positive, negative or no association. Most studies were limited by their cross-sectional design and the wide age range of the participants. In a cohort of children in Cyprus, we explored the association of asthma with serum high-density-lipoprotein cholesterol (HDL-C) at age 16-18 years (follow-up) independently of and in relation to HDL-C at age 11-12 years (baseline). METHODS In a case-control design, we recruited active asthmatics (AA; n = 68), current wheezers only (CWO; n = 123) and non-asthmatic controls (n = 660). Logistic regression models were used to evaluate associations of asthma with follow-up serum HDL-C and the role of baseline HDL-C. RESULTS At follow-up, mean HDL-C levels in AA and CWO patients were significantly lower than in the controls (47.9 and 49.7 vs. 53.4 mg/dl; p = 0.001 and p = 0.011). We observed significant associations of AA patients with low HDL-C (<15th percentile; OR 2.32, 95% CI 1.16-4.47) that remained significant after further adjustment for baseline HDL-C (OR 2.14, 95% CI 1.06-4.14). Stratification by baseline HDL-C indicated that the association was significant only in those with high baseline HDL-C (OR 2.40, 95% CI 1.03-5.20). Stratification by IgE sensitization showed that the association was pronounced only in subjects who were sensitized (OR 3.41, 95% CI 1.12-9.88). CONCLUSIONS Adolescent asthma is associated with low serum HDL-C independent of previous HDL-C levels in childhood. The association appears pronounced in those with a drop in HDL-C levels between childhood and adolescence and in those who have IgE sensitization.
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Affiliation(s)
- Panayiotis K Yiallouros
- Cyprus International Institute for Environmental and Public Health in association with Harvard School of Public Health, Cyprus University of Technology, Limassol, Cyprus
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Fu JJ, McDonald VM, Gibson PG, Simpson JL. Systemic Inflammation in Older Adults With Asthma-COPD Overlap Syndrome. ALLERGY, ASTHMA & IMMUNOLOGY RESEARCH 2014; 6:316-24. [PMID: 24991455 PMCID: PMC4077958 DOI: 10.4168/aair.2014.6.4.316] [Citation(s) in RCA: 73] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/04/2013] [Revised: 06/03/2013] [Accepted: 07/18/2013] [Indexed: 02/05/2023]
Abstract
PURPOSE The role of systemic inflammation on asthma-COPD overlap syndrome is unknown. This study aimed to examine systemic inflammation in asthma-COPD overlap syndrome, and to identify associations between clinical characteristics and inflammatory mediators in asthma-COPD overlap syndrome. METHODS In 108 adults older than 55 years comprising healthy controls (n=29), asthma (n=16), COPD (n=21) and asthma-COPD overlap syndrome (n=42), serum high sensitivity C-reactive protein and Interleukin 6 (IL-6) were assayed. Spirometry, induced sputum, quality of life, comorbidities and medications were assessed, and their associations with asthma-COPD overlap syndrome were analyzed using logistic regression. Associations between systemic inflammatory mediators and clinical characteristics were tested in multivariate linear regression models. RESULTS Patients with asthma-COPD overlap syndrome had significantly elevated IL-6 levels compared with healthy controls and asthmatics. Age, comorbidity index and IL-6 level were independently associated with asthma-COPD overlap syndrome. FEV1% predicted was inversely associated with IL-6 level, and cardiovascular disease was associated with an increased IL-6 level. Systemic markers were not associated with airway inflammation. CONCLUSIONS Systemic inflammation is commonly present in asthma-COPD overlap syndrome, and asthma-COPD overlap syndrome resembled COPD in terms of systemic inflammation. IL-6 is a pivotal inflammatory mediator that may be involved in airflow obstruction and cardiovascular disease and may be an independent treatment target.
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Affiliation(s)
- Juan-Juan Fu
- Respiratory Group, Department of Integrated Traditional Chinese and Western Medicine, West China Hospital, Sichuan University, Chengdu, China. ; Priority Research Centre for Asthma and Respiratory Diseases, University of Newcastle; Hunter Medical Research Institute, Newcastle, NSW, Australia. ; Department of Respiratory and Sleep Medicine, John Hunter Hospital, New Lambton, NSW, Australia
| | - Vanessa M McDonald
- Priority Research Centre for Asthma and Respiratory Diseases, University of Newcastle; Hunter Medical Research Institute, Newcastle, NSW, Australia. ; School of Nursing and Midwifery, Faculty of Health, University of Newcastle, NSW, Australia. ; Department of Respiratory and Sleep Medicine, John Hunter Hospital, New Lambton, NSW, Australia
| | - Peter G Gibson
- Priority Research Centre for Asthma and Respiratory Diseases, University of Newcastle; Hunter Medical Research Institute, Newcastle, NSW, Australia. ; Department of Respiratory and Sleep Medicine, John Hunter Hospital, New Lambton, NSW, Australia. ; Woolcock Institute of Medical Research, Sydney NSW, Australia
| | - Jodie L Simpson
- Priority Research Centre for Asthma and Respiratory Diseases, University of Newcastle; Hunter Medical Research Institute, Newcastle, NSW, Australia. ; Department of Respiratory and Sleep Medicine, John Hunter Hospital, New Lambton, NSW, Australia
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De Nardo D, De Nardo CM, Latz E. New insights into mechanisms controlling the NLRP3 inflammasome and its role in lung disease. THE AMERICAN JOURNAL OF PATHOLOGY 2013; 184:42-54. [PMID: 24183846 DOI: 10.1016/j.ajpath.2013.09.007] [Citation(s) in RCA: 163] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2013] [Revised: 09/10/2013] [Accepted: 09/18/2013] [Indexed: 01/13/2023]
Abstract
Inflammasomes are large macromolecular signaling complexes that control the proteolytic activation of two highly proinflammatory IL-1 family cytokines, IL-1β and IL-18. The NLRP3 inflammasome is of special interest because it can assemble in response to a diverse array of stimuli and because the inflammation it triggers has been implicated in a wide variety of disease pathologies. To avoid aberrant activation, the NLRP3 inflammasome is modulated on multiple levels, ranging from transcriptional control to post-translational protein modifications. Emerging genetic and pharmacological evidence suggests that NLRP3 inflammasome activation may also be involved in acute lung inflammation after viral infection and during progression of several chronic pulmonary diseases, including idiopathic pulmonary fibrosis, chronic obstructive pulmonary disease, and asthma. Here, we review the most recent contributions to our understanding of the regulatory mechanisms controlling activation of the NLRP3 inflammasome and discuss the contribution of the NLRP3 inflammasome to the pathology of lung diseases.
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Affiliation(s)
- Dominic De Nardo
- Institute of Innate Immunity, University Hospital, University of Bonn, Bonn, Germany
| | - Christine M De Nardo
- Institute of Innate Immunity, University Hospital, University of Bonn, Bonn, Germany
| | - Eicke Latz
- Institute of Innate Immunity, University Hospital, University of Bonn, Bonn, Germany; German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany; Division of Infectious Diseases and Immunology, Department of Medicine, University of Massachusetts Medical School, Worcester, Massachusetts.
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Chen K, Liu M, Liu Y, Wang C, Yoshimura T, Gong W, Le Y, Tessarollo L, Wang JM. Signal relay by CC chemokine receptor 2 (CCR2) and formylpeptide receptor 2 (Fpr2) in the recruitment of monocyte-derived dendritic cells in allergic airway inflammation. J Biol Chem 2013; 288:16262-16273. [PMID: 23603910 PMCID: PMC3675565 DOI: 10.1074/jbc.m113.450635] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2013] [Revised: 04/08/2013] [Indexed: 12/24/2022] Open
Abstract
Chemoattractant receptors regulate leukocyte accumulation at sites of inflammation. In allergic airway inflammation, although a chemokine receptor CCR2 was implicated in mediating monocyte-derived dendritic cell (DC) recruitment into the lung, we previously also discovered reduced accumulation of DCs in the inflamed lung in mice deficient in formylpeptide receptor Fpr2 (Fpr2(-/-)). We therefore investigated the role of Fpr2 in the trafficking of monocyte-derived DCs in allergic airway inflammation in cooperation with CCR2. We report that in allergic airway inflammation, CCR2 mediated the recruitment of monocyte-derived DCs to the perivascular region, and Fpr2 was required for further migration of the cells into the bronchiolar area. We additionally found that the bronchoalveolar lavage liquid from mice with airway inflammation contained both the CCR2 ligand CCL2 and an Fpr2 agonist CRAMP. Furthermore, similar to Fpr2(-/-) mice, in the inflamed airway of CRAMP(-/-) mice, DC trafficking into the peribronchiolar areas was diminished. Our study demonstrates that the interaction of CCR2 and Fpr2 with their endogenous ligands sequentially mediates the trafficking of DCs within the inflamed lung.
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Affiliation(s)
- Keqiang Chen
- Laboratory of Molecular Immunoregulation, Cancer and Inflammation Program, Center for Cancer Research
| | - Mingyong Liu
- Laboratory of Molecular Immunoregulation, Cancer and Inflammation Program, Center for Cancer Research
| | - Ying Liu
- Laboratory of Molecular Immunoregulation, Cancer and Inflammation Program, Center for Cancer Research
| | - Chunyan Wang
- Laboratory of Molecular Immunoregulation, Cancer and Inflammation Program, Center for Cancer Research
| | - Teizo Yoshimura
- Laboratory of Molecular Immunoregulation, Cancer and Inflammation Program, Center for Cancer Research
| | | | - Yingying Le
- Institute for Nutritional Sciences, Chinese Academy of Sciences, Shanghai 200031, China
| | - Lino Tessarollo
- Mouse Cancer Genetics Program, Center for Cancer Research, NCI, National Institutes of Health, Frederick, Maryland 21702
| | - Ji Ming Wang
- Laboratory of Molecular Immunoregulation, Cancer and Inflammation Program, Center for Cancer Research.
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Vijayakumar J, Subramanian S, Singh P, Corsini E, Fontanez S, Lawler M, Kaplan R, Brady TJ, Hoffmann U, Tawakol A. Arterial inflammation in bronchial asthma. J Nucl Cardiol 2013; 20:385-95. [PMID: 23526296 DOI: 10.1007/s12350-013-9697-z] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2012] [Accepted: 02/13/2013] [Indexed: 02/08/2023]
Abstract
BACKGROUND Bronchial asthma is a chronic inflammatory condition associated with increased cardiovascular (CV) events. Here, we assess arterial inflammation, using 18F-fluorodeoxyglucose positron emission tomography/computed tomography imaging (FDG-PET/CT), in patients with bronchial asthma and low to intermediate Framingham risk scores (FRS). METHODS A total of 102 patients underwent FDG-PET/CT imaging for clinical indications. Thirty-four patients (mean age 54.9 ± 16.1) with mild asthma and no known atherosclerotic disease were compared to 2 non-asthmatic groups. The first control group (n = 34) were matched by age, gender, and FRS. The second control group (n = 34) had clinical atherosclerosis and were matched by gender. Thereafter, arterial FDG uptake on PET images was determined, while blinded to patient identifiers. RESULTS Target-to-background-ratio (TBR) in the aorta was higher in asthmatics vs non-asthmatic FRS-matched controls (1.96 ± 0.26 vs 1.76 ± 0.20; P < .001). The aortic TBR remained elevated in asthmatics vs non-asthmatic controls after adjusting traditional CV risk factors (P < .001). An inverse correlation was observed between FDG uptake and lung function, FEV1 (P = .02) and peak flow (P = .03). CONCLUSIONS Bronchial asthma is associated with increased arterial inflammation beyond that estimated by current risk stratification tools. Further studies are required to evaluate whether attenuation of systemic inflammation will decrease CV events.
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Affiliation(s)
- Jayanthi Vijayakumar
- Cardiac MR PET CT Program, Massachusetts General Hospital and Harvard Medical School, Boston, MA, 02114, USA
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Abstract
Chronic obstructive pulmonary disease (COPD) can no longer be considered as a disease affecting only the lungs. Increasing evidence supports the presence of a systemic inflammatory component which is thought to provide the link between COPD and the co-morbidities commonly associated with this disease. These include cardiovascular disorders, skeletal muscle dysfunction, diabetes, and osteoporosis. The majority of current therapies for COPD have been developed to improve airway obstruction or to target airway inflammation, leaving an unmet medical need with respect to the systemic inflammatory component of COPD and its extra-pulmonary manifestations. This review describes systemic biomarkers in COPD and their relationship with both the local lung and systemic manifestations of the disease. A summary is provided of the most promising biomarkers that have been investigated in COPD and its co-morbidities. Such biomarkers may be used to assess and manage the systemic effects of COPD, and may guide future development of novel therapeutic interventions to provide a more holistic approach to treating this multi-faceted disease.
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Affiliation(s)
- William MacNee
- ELEGI, Colt Research Laboratories, MRC/UoE Centre for Inflammation Research, Queen's Medical Research Institute, 47 Little France Crescent, Edinburgh EH 16 4TJ, UK.
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Yun HD, Yawn BP, Leibson CL, Juhn YJ. In reply. Mayo Clin Proc 2013; 88:211-2. [PMID: 23374625 DOI: 10.1016/j.mayocp.2012.11.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/05/2012] [Accepted: 11/14/2012] [Indexed: 10/27/2022]
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Wood LG, Baines KJ, Fu J, Scott HA, Gibson PG. The neutrophilic inflammatory phenotype is associated with systemic inflammation in asthma. Chest 2012; 142:86-93. [PMID: 22345378 DOI: 10.1378/chest.11-1838] [Citation(s) in RCA: 203] [Impact Index Per Article: 16.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND The role of systemic inflammation in asthma is unclear. The aim of this study was to compare systemic inflammation in subjects with stable asthma, categorized by airway inflammatory phenotype, with healthy control subjects. METHODS Adults with stable asthma (n = 152) and healthy control subjects (n = 83) underwent hypertonic saline challenge and sputum induction. Differential leukocyte counts were performed on selected sputum. Plasma high-sensitivity C-reactive protein (CRP), IL-6, and tumor necrosis factor-α levels and sputum IL-8 and neutrophil elastase levels were determined by enzyme-linked immunosorbent assay. Sputum IL-8 receptor α (IL-8RA) and IL-8 receptor β (IL-8RB) messenger RNA expression were determined by real-time polymerase chain reaction. RESULTS Subjects with asthma were classified as having nonneutrophilic asthma or neutrophilic asthma. The asthma (neutrophilic) group had increased systemic inflammation compared with the asthma (nonneutrophilic) and healthy control groups, with median (interquartile range) CRP levels of 5.0 (1.6-9.2), 1.8 (0.9-5.3), and 1.8 (0.8-4.1) mg/L (P = .011), respectively, and IL-6 levels of 2.1 (1.5-3.1), 1.4 (1.0-2.1), and 1.1 (0.8-1.5) pg/mL (P < .001), respectively. The proportion of subjects with elevated CRP and IL-6 levels was also higher in the asthma (neutrophilic) group. Sputum IL-8 and neutrophil elastase protein and IL-8RA and IL-8RB gene expression were significantly increased in the asthma (neutrophilic) group. In multiple regression analysis of subjects with asthma, sex, BMI, statin use, and percent sputum neutrophils were significant predictors of log(10)CRP. Sex, BMI, and %FEV(1) were significant predictors of log(10)IL-6. CONCLUSIONS Systemic inflammation is increased in patients with asthma with neutrophilic airway inflammation and associated with worse clinical outcomes. Systemic inflammation may contribute to the pathophysiology of neutrophilic asthma.
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Affiliation(s)
- Lisa G Wood
- Centre for Asthma and Respiratory Diseases, University of Newcastle, and Department of Respiratory and Sleep Medicine, Hunter Medical Research Institute, John Hunter Hospital, Newcastle, NSW, Australia.
| | - Katherine J Baines
- Centre for Asthma and Respiratory Diseases, University of Newcastle, and Department of Respiratory and Sleep Medicine, Hunter Medical Research Institute, John Hunter Hospital, Newcastle, NSW, Australia
| | - Juanjuan Fu
- Centre for Asthma and Respiratory Diseases, University of Newcastle, and Department of Respiratory and Sleep Medicine, Hunter Medical Research Institute, John Hunter Hospital, Newcastle, NSW, Australia
| | - Hayley A Scott
- Centre for Asthma and Respiratory Diseases, University of Newcastle, and Department of Respiratory and Sleep Medicine, Hunter Medical Research Institute, John Hunter Hospital, Newcastle, NSW, Australia
| | - Peter G Gibson
- Centre for Asthma and Respiratory Diseases, University of Newcastle, and Department of Respiratory and Sleep Medicine, Hunter Medical Research Institute, John Hunter Hospital, Newcastle, NSW, Australia
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Davis JT, Pasha DN, Khandrika S, Fung MM, Milic M, O'Connor DT. Central hemodynamics in prehypertension: effect of the β-adrenergic antagonist nebivolol. J Clin Hypertens (Greenwich) 2012; 15:69-74. [PMID: 23282127 DOI: 10.1111/jch.12031] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
The aim of the current study was to characterize the effects of the novel β-adrenergic antagonist nebivolol on central aortic blood pressures, arterial properties, and nitroxidergic activity in individuals with prehypertension. Prehypertension is emerging as a major risk factor for several adverse cardiovascular consequences. Increased pulse wave velocity, aortic augmentation index, and aortic blood pressures have been linked with augmented risk of cardiovascular disease and mortality. While the effects of antihypertensive drugs on these parameters in hypertensive patients have been studied, there are limited data so far in prehypertension. Fifty individuals with prehypertension were randomized to either nebivolol (5 mg per day) or placebo in a double-blind clinical trial. Patients underwent measurement of pulse wave velocity as well as aortic blood pressure and aortic augmentation index via pulse wave analysis at baseline and 8 weeks. Patients also had blood and urine biochemistries done at each visit. Nebivolol achieved significant reductions in central aortic systolic (P=.011), diastolic (P=.009), and mean arterial blood pressure (P=.002). Pulse wave velocity trended toward improvement but did not achieve significance (P=.088). Nitric oxide production, measured as urinary nitrite/nitrite excretion, also rose substantially in the nebivolol group (by approximately 60%, P=.030). Central blood pressures can be effectively lowered by β-blockade while patients are still in the prehypertension phase, and the effects may be coupled to improve nitric oxide release by the drug.
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Affiliation(s)
- Jason T Davis
- Department of Medicine, VA San Diego Healthcare System and the University of California, San Diego, CA 92093, USA.
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Yun HD, Knoebel E, Fenta Y, Gabriel SE, Leibson CL, Loftus EV, Roger V, Yawn BP, Li B, Juhn YJ. Asthma and proinflammatory conditions: a population-based retrospective matched cohort study. Mayo Clin Proc 2012; 87:953-60. [PMID: 22980164 PMCID: PMC3538394 DOI: 10.1016/j.mayocp.2012.05.020] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/18/2012] [Revised: 04/20/2012] [Accepted: 05/11/2012] [Indexed: 12/16/2022]
Abstract
OBJECTIVE To determine the association between asthma and proinflammatory conditions. PARTICIPANTS AND METHODS This population-based retrospective matched cohort study enrolled all asthmatic patients among Rochester, Minnesota, residents between January 1, 1964, and December 31, 1983. For each asthmatic patient, 2 age-and sex-matched nonasthmatic individuals were drawn from the same population. The asthmatic and nonasthmatic cohorts were followed forward in the Rochester Epidemiology Project diagnostic index for inflammatory bowel disease (IBD), rheumatoid arthritis (RA), diabetes mellitus (DM), and coronary heart disease (CHD) as outcome events. Data were fitted to Cox proportional hazards models. RESULTS We identified 2392 asthmatic patients and 4784 nonasthmatic controls. Of the asthmatic patients, 1356 (57%) were male, and mean age at asthma onset was 15.1 years. Incidence rates of IBD, RA, DM, and CHD in nonasthmatic controls were 32.8, 175.9, 132.0, and 389.7 per 100,000 person-years, respectively; those for asthmatic patients were 41.4, 227.9, 282.6, and 563.7 per 100,000 person-years, respectively. Asthma was associated with increased risks of DM (hazard ratio, 2.11; 95% confidence interval, 1.43-3.13; P<.001) and CHD (hazard ratio, 1.47; 95% confidence interval, 1.05-2.06; P=.02) but not with increased risks of IBD or RA. CONCLUSION Although asthma is a helper T cell type 2-predominant condition, it may increase the risks of helper T cell type 1-polarized proinflammatory conditions, such as CHD and DM. Physicians who care for asthmatic patients need to address these unrecognized risks in asthmatic patients.
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Affiliation(s)
- Hyun D. Yun
- Department of Medicine, Harbor Hospital, Baltimore, MD
| | - Erin Knoebel
- Department of Pediatric and Adolescent Medicine, Mayo Clinic, Rochester, MN
| | - Yilma Fenta
- Department of Pediatric and Adolescent Medicine, Mayo Clinic, Rochester, MN
| | - Sherine E. Gabriel
- Department of Internal Medicine, Mayo Clinic, Rochester, MN
- Department of Health Sciences Research, Mayo Clinic, Rochester, MN
| | | | | | - Veronique Roger
- Department of Internal Medicine, Mayo Clinic, Rochester, MN
- Department of Health Sciences Research, Mayo Clinic, Rochester, MN
| | - Barbara P. Yawn
- Department of Research, Olmsted Medical Center, Rochester, MN
| | - Bill Li
- Department of Health Sciences Research, Mayo Clinic, Rochester, MN
| | - Young J. Juhn
- Department of Pediatric and Adolescent Medicine, Mayo Clinic, Rochester, MN
- Department of Internal Medicine, Mayo Clinic, Rochester, MN
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Lavoie-Lamoureux A, Leclere M, Lemos K, Wagner B, Lavoie JP. Markers of Systemic Inflammation in Horses with Heaves. J Vet Intern Med 2012; 26:1419-26. [DOI: 10.1111/j.1939-1676.2012.00993.x] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2012] [Revised: 05/28/2012] [Accepted: 07/23/2012] [Indexed: 11/29/2022] Open
Affiliation(s)
- A. Lavoie-Lamoureux
- Respiratory Cell and Molecular Biology Laboratory; Department of Clinical Sciences; Faculty of Veterinary Medicine; Université de Montréal; St-Hyacinthe; Quebec; Canada
| | - M. Leclere
- Respiratory Cell and Molecular Biology Laboratory; Department of Clinical Sciences; Faculty of Veterinary Medicine; Université de Montréal; St-Hyacinthe; Quebec; Canada
| | - K. Lemos
- Respiratory Cell and Molecular Biology Laboratory; Department of Clinical Sciences; Faculty of Veterinary Medicine; Université de Montréal; St-Hyacinthe; Quebec; Canada
| | - B. Wagner
- Department of Population Medicine and Diagnostic Sciences; College of Veterinary Medicine; Cornell University; Ithaca; NY
| | - J.-P. Lavoie
- Respiratory Cell and Molecular Biology Laboratory; Department of Clinical Sciences; Faculty of Veterinary Medicine; Université de Montréal; St-Hyacinthe; Quebec; Canada
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Poynter ME. Airway epithelial regulation of allergic sensitization in asthma. Pulm Pharmacol Ther 2012; 25:438-46. [PMID: 22579987 DOI: 10.1016/j.pupt.2012.04.005] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/22/2012] [Revised: 04/18/2012] [Accepted: 04/27/2012] [Indexed: 02/07/2023]
Abstract
While many of the contributing cell types and mediators of allergic asthma are known, less well understood are the factors that influence the development of allergic responses that lead to the development of allergic asthma. As the first airway cell type to respond to inhaled factors, the epithelium orchestrates downstream interactions between dendritic cells (DCs) and CD4⁺ T cells that quantitatively and qualitatively dictate the degree and type of the allergic asthma phenotype, making the epithelium of critical importance for the genesis of allergies that later manifest in allergic asthma. Amongst the molecular processes of critical importance in airway epithelium is the transcription factor, nuclear factor-kappaB (NF-κB). This review will focus primarily on the genesis of pulmonary allergies and the participation of airway epithelial NF-κB activation therein, using examples from our own work on nitrogen dioxide (NO₂) exposure and genetic modulation of airway epithelial NF-κB activation. In addition, the mechanisms through which Serum Amyloid A (SAA), an NF-κB-regulated, epithelial-derived mediator, influences allergic sensitization and asthma severity will be presented. Knowledge of the molecular and cellular processes regulating allergic sensitization in the airways has the potential to provide powerful insight into the pathogenesis of allergy, as well as targets for the prevention and treatment of asthma.
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Affiliation(s)
- Matthew E Poynter
- Department of Medicine and Vermont Lung Center, University of Vermont, Given E410A, 89 Beaumont Avenue, Burlington, VT 05405, USA.
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López-Campos JL, Arellano E, Calero C, Delgado A, Márquez E, Cejudo P, Ortega F, Rodríguez-Panadero F, Montes-Worboys A. Determination of inflammatory biomarkers in patients with COPD: a comparison of different assays. BMC Med Res Methodol 2012; 12:40. [PMID: 22463705 PMCID: PMC3340310 DOI: 10.1186/1471-2288-12-40] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2011] [Accepted: 03/31/2012] [Indexed: 11/25/2022] Open
Abstract
Background Chronic obstructive pulmonary disease (COPD) is an inflammatory pulmonary disorder with systemic inflammatory manifestations that are mediated by circulating acute-phase reactants. This study compared an enzyme-linked immunosorbent assay (ELISA) to a nephelometric technique for the measurement of serum C-reactive protein (CRP) and serum amyloid A (SAA) and investigated how the choice of assay influenced the estimation of inflammation in patients with stable COPD. Methods CRP and SAA concentrations measured by ELISA and nephelometry in 88 patients with COPD and 45 control subjects were used to evaluate the performance of these methods in a clinical setting. Results With both assays, the concentrations of CRP and SAA were higher in COPD patients than in controls after adjustment for age and sex. There was a moderate correlation between the values measured by ELISA and those measured by nephelometry (logCRP: r = 0.55, p < 0.001; logSAA: r = 0.40, p < 0.001). However, the concentrations of biomarkers determined by nephelometry were significantly higher than those obtained with ELISA for CRP (mean difference = 2.7 (9.4) mg/L) and SAA (mean difference = 0.31 (14.3) mg/L). Conclusion Although the serum CRP and SAA concentrations measured by ELISA and nephelometry correlated well in COPD patients, the ELISA values tended to be lower for CRP and SAA when compared with nephelometric measurements. International standardization of commercial kits is required before the predictive validity of inflammatory markers for patients with COPD can be effectively assessed in clinical practice.
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Affiliation(s)
- José L López-Campos
- Unidad Médico-Quirúrgica de Enfermedades Respiratorias, Instituto de Biomedicina de Sevilla, Hospital Universitario Virgen del Rocío, Sevilla, Spain.
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Carmeli E, Imam B, Bachar A, Merrick J. Inflammation and oxidative stress as biomarkers of premature aging in persons with intellectual disability. RESEARCH IN DEVELOPMENTAL DISABILITIES 2012; 33:369-375. [PMID: 22119683 DOI: 10.1016/j.ridd.2011.10.002] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2011] [Accepted: 10/05/2011] [Indexed: 05/31/2023]
Abstract
The decline in cognitive ability and physical performance in older adults with intellectual disabilities (ID) is accompanied by less participation in social activities and a sedentary lifestyle; however the pathogenesis is not clear yet. It was recently suggested that chronic disease, adverse drug reactions, and aging create a cascade of events that can be best characterized as an asymptomatic inflammatory process. This cascade of events is mediated by cytokine interleukins 1 and 6 (IL-1α, and IL-6), nitric oxide (NO) and total oxidative stress (OS). Our hypothesis was that chronic inflammation in the bloodstream of persons with ID contributes to their "premature aging". To test this hypothesis, we measured and compared the levels of inflammatory molecules in persons with and without ID. Fifteen adults with, and 15 adults without ID (control group) participated in this study. The levels of NO metabolites (NOx), IL-1α, and IL-6 were obtained from participants' serum. OS markers were drawn from participants' capillary. Western blot, RT-PCR and specific chemical analysis were used as measurement tools. The levels of inflammatory molecules and OS were significantly higher in persons with ID compared to the control group. Asymptomatic inflammation in the bloodstream of the older adults with ID might explain the "premature aging" of these individuals. Monitoring the levels of inflammatory molecules could serve as biomarkers of "premature aging" which may allow early diagnosis and intervention, and improve the quality of care for persons with ID.
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Affiliation(s)
- Eli Carmeli
- Department of Physical Therapy, Sackler Faculty of Medicine, Stanley Steyer School of Health Professions, Tel Aviv University, Ramat Aviv 69978, Israel.
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Abstract
Animal models have been developed to investigate specific components of asthmatic airway inflammation, hyper-responsiveness or remodelling. However, all of these aspects are rarely observed in the same animal. Heaves is a naturally occurring disease of horses that combines these features. It is characterized by stable dust-induced inflammation, bronchospasm and remodelling. The evaluation of horses during well-controlled natural antigen exposure and avoidance in experimental settings allows the study of disease mechanisms in the asymptomatic and symptomatic stages, an approach rarely feasible in humans. Also, the disease can be followed over several years to observe the cumulative effect of repeated episodes of clinical exacerbation or to evaluate long-term treatment, contrasting most murine asthma models. This model has shown complex gene and environment interactions, the involvement of both innate and adaptive responses to inflammation, and the contribution of bronchospasm and tissue remodelling to airway obstruction, all occurring in a natural setting. Similarities with the human asthmatic airways are well described and the model is currently being used to evaluate airway remodelling and its reversibility in ways that are not possible in people for ethical reasons. Tools including antibodies, recombinant proteins or gene arrays, as well as methods for sampling tissues and assessing lung function in the horse are constantly evolving to facilitate the study of this animal model. Research perspectives that can be relevant to asthma include the role of neutrophils in airway inflammation and their response to corticosteroids, systemic response to pulmonary inflammation, and maintaining athletic capacities with early intervention.
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Affiliation(s)
- Mathilde Leclere
- Department of Clinical Sciences, Faculty of Veterinary Medicine, Université de Montréal, St-Hyacinthe, Canada
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J. Verspohl E, Podlogar J. LPS-Induced Proliferation and Chemokine Secretion from BEAS-2B Cells. ACTA ACUST UNITED AC 2012. [DOI: 10.4236/pp.2012.32024] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Ather JL, Ckless K, Martin R, Foley KL, Suratt BT, Boyson JE, Fitzgerald KA, Flavell RA, Eisenbarth SC, Poynter ME. Serum amyloid A activates the NLRP3 inflammasome and promotes Th17 allergic asthma in mice. THE JOURNAL OF IMMUNOLOGY 2011; 187:64-73. [PMID: 21622869 DOI: 10.4049/jimmunol.1100500] [Citation(s) in RCA: 187] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
IL-1β is a cytokine critical to several inflammatory diseases in which pathogenic Th17 responses are implicated. Activation of the NLRP3 inflammasome by microbial and environmental stimuli can enable the caspase-1-dependent processing and secretion of IL-1β. The acute-phase protein serum amyloid A (SAA) is highly induced during inflammatory responses, wherein it participates in systemic modulation of innate and adaptive immune responses. Elevated levels of IL-1β, SAA, and IL-17 are present in subjects with severe allergic asthma, yet the mechanistic relationship among these mediators has yet to be identified. In this study, we demonstrate that Saa3 is expressed in the lungs of mice exposed to several mixed Th2/Th17-polarizing allergic sensitization regimens. SAA instillation into the lungs elicits robust TLR2-, MyD88-, and IL-1-dependent pulmonary neutrophilic inflammation. Furthermore, SAA drives production of IL-1α, IL-1β, IL-6, IL-23, and PGE(2), causes dendritic cell (DC) maturation, and requires TLR2, MyD88, and the NLRP3 inflammasome for secretion of IL-1β by DCs and macrophages. CD4(+) T cells polyclonally stimulated in the presence of conditioned media from SAA-exposed DCs produced IL-17, and the capacity of polyclonally stimulated splenocytes to secrete IL-17 is dependent upon IL-1, TLR2, and the NLRP3 inflammasome. Additionally, in a model of allergic airway inflammation, administration of SAA to the lungs functions as an adjuvant to sensitize mice to inhaled OVA, resulting in leukocyte influx after Ag challenge and a predominance of IL-17 production from restimulated splenocytes that is dependent upon IL-1R signaling.
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Affiliation(s)
- Jennifer L Ather
- Vermont Lung Center, Division of Pulmonary Disease and Critical Care, Department of Medicine, University of Vermont, Burlington, VT 05405, USA
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Pulmonary function correlates with arterial stiffness in asthmatic patients. Respir Med 2009; 104:197-203. [PMID: 19892539 DOI: 10.1016/j.rmed.2009.09.004] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/11/2009] [Revised: 08/29/2009] [Accepted: 09/06/2009] [Indexed: 11/24/2022]
Abstract
BACKGROUND At the population level, asthma has been associated with chronic systemic inflammation as well as adverse cardiovascular outcomes. OBJECTIVES The aim of this study was to investigate peripheral vascular hemodynamic variables of arterial stiffness (AS) and their relationship to pulmonary function tests in asthmatic patients. METHODS Young asthmatic patients from the tertiary center for pulmonary diseases at the Barzilai Medical Center underwent pulmonary function evaluation and non-invasive radial artery hemodynamic profiling, pre- and post-exercise. Results were compared to age matched, non-asthmatic controls. RESULTS 23 young asthmatics and 41 controls, completed all evaluation points. Pulmonary flow parameters were significantly reduced in the asthma group at all points. There were no differences between groups in BMI, blood pressure, pulse rate or measurements of AS at baseline or after bronchodilation. The % predicted forced expiratory volume in the first second at baseline (FEV1%) in asthmatics was positively correlated with the small arteries elasticity index (SAEI) and negatively correlated with the systemic vascular resistance (SVR) in these patients. These correlations were not observed in non-asthmatic controls. In multifactorial regression FEV1 remained the major factor associated with measurements of AS in asthmatic patients, while gender was the only significant factor in non-asthmatic controls. CONCLUSIONS Significant correlations between measurements of AS and FEV1 in young asthmatics, suggest the presence of a common systemic, most likely inflammatory pathway involving both the cardiovascular and respiratory systems.
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Bibliography. Current world literature. Curr Opin Pulm Med 2009; 15:170-7. [PMID: 19225311 DOI: 10.1097/mcp.0b013e3283276f69] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
This bibliography is compiled by clinicians from the journals listed at the end of this publication. It is based on literature entered into our database between 1 November 2007 and 31 October 2008 (articles are generally added to the database about two and a half months after publication). In addition, the bibliography contains every paper annotated by reviewers; these references were obtained from a variety of bibliographic databases and published between the beginning of the review period and the time of going to press. The bibliography has been grouped into topics that relate to the reviews in this issue.
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Vehmas T, Hiltunen A, Leino-Arjas P, Piirilä P. Relación entre las calcificaciones ateroscleróticas en el tórax detectadas mediante tomografía computarizada y la función pulmonar. Arch Bronconeumol 2009; 45:376-82. [DOI: 10.1016/j.arbres.2008.12.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2008] [Revised: 12/15/2008] [Accepted: 12/22/2008] [Indexed: 11/30/2022]
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Relation Between Atherosclerotic Calcifications Detected in Chest Computed Tomography and Lung Function. ACTA ACUST UNITED AC 2009. [DOI: 10.1016/s1579-2129(09)72935-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Current Opinion in Pulmonary Medicine. Current world literature. Curr Opin Pulm Med 2009; 15:79-87. [PMID: 19077710 DOI: 10.1097/mcp.0b013e32831fb1f3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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