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      International Journal of COPD (submit here)

      This international, peer-reviewed Open Access journal by Dove Medical Press focuses on pathophysiological processes underlying Chronic Obstructive Pulmonary Disease (COPD) interventions, patient focused education, and self-management protocols. Sign up for email alerts here.

      39,063 Monthly downloads/views I 2.893 Impact Factor I 5.2 CiteScore I 1.16 Source Normalized Impact per Paper (SNIP) I 0.804 Scimago Journal & Country Rank (SJR)

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      Serum endocan levels in patients with stable COPD

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          Abstract

          Background

          Endothelial cell specific molecule-1, also called as endocan, is a dermatan sulfate proteoglycan, which is expressed by endothelial cells in alveolar walls of the lung and kidney. High endocan levels are found associated with endothelial dysfunction and inflammation. We hypothesize that endocan level is also high in COPD due to systemic inflammation and endothelial dysfunction. We aimed to investigate the expression of endocan in patients with stable COPD.

          Material and methods

          The study included patients with COPD and control subjects. COPD patients were classified according to the Global Initiative for Chronic Obstructive Lung Disease (GOLD) 2017 criteria. Demographics, body mass index, smoking history, and comorbidities were recorded. Endocan levels of COPD patients and controls were compared.

          Results

          Totally, 88 subjects (47 stable COPD patients, 41 controls) were evaluated. Endocan levels were significantly higher in COPD patients than control group (860.1±259.8 vs 647.3±316.9 pg/mL, P=0.001). There was no relationship between GOLD COPD categories and endocan levels. Also endocan levels were similar between COPD patients with or without hypoxemia.

          Conclusion

          Serum endocan level was significantly higher in patients with stable COPD. Further studies should be performed to better understand the relationship between endocan and COPD.

          Most cited references33

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          Differences in interleukin-8 and tumor necrosis factor-alpha in induced sputum from patients with chronic obstructive pulmonary disease or asthma.

          V Keatings, P Collins, D. M. Scott … (1996)
          Asthma and chronic obstructive pulmonary disease are characterized by chronic airway inflammation. Studies using bronchoalveolar lavage (BAL) have shown an increased proportion of eosinophils in the BAL fluid from asthmatics compared with that from normal subjects, whereas studies of chronic obstructive pulmonary disease (COPD) have shown increased numbers of neutrophils. Induced sputum allows sampling of respiratory tract secretions from patients and control subjects, providing a noninvasive method of studying airway secretions and allowing characterization of cells and measurement of soluble markers. We investigated whether induced sputum was a useful method of studying airway fluid from patients with moderate to severe COPD and whether it could be used to compare inflammation in this condition with that in asthma. An initial reproducibility study was undertaken. Sputum was induced twice in 13 patients with severe COPD at a 14-d interval. Total and differential cell counts were carried out and were found to be reproducible over this period. Sputum was then induced in 14 patients with COPD, 23 patients with asthma, 12 healthy cigarette smokers, and 16 normal nonsmoking control subjects. We found a significant increase in neutrophils and increased concentrations of tumor necrosis factor-alpha (TNF alpha) and interleukin-8 (IL-8) in the patients with COPD compared with the smoking and nonsmoking control subjects. Interleukin-8, but not TNF alpha, was significantly higher in the COPD group than in the asthmatic group. We conclude that the cytokines TNF alpha and IL-8 may be involved in the inflammation in COPD.
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            ESM-1 is a novel human endothelial cell-specific molecule expressed in lung and regulated by cytokines.

            A.-B. Tonnel, Mark Fiers, N Heyden … (1996)
            We here report the identification of a novel human endothelial cell-specific molecule (called ESM-1) cloned from a human umbilical vein endothelial cell (HUVEC) cDNA library. Constitutive ESM-1 gene expression (as demonstrated by Northern blot and reverse transcription-polymerase chain reaction analysis) was found in HUVECs but not in the other human cell lines tested. The cDNA sequence contains an open reading frame of 552 nucleotides and a 1398-nucleotide 3'-untranslated region including several domains involved in mRNA instability and five putative polyadenylation consensus sequences. The deduced 184-amino acid sequence defines a cysteine-rich protein with a functional NH2-terminal hydrophobic signal sequence. Searches in several data bases confirmed the unique identity of this sequence. A rabbit immune serum raised against the 14-kDa COOH-terminal peptide of ESM-1 immunoprecipitated a 20-kDa protein only in ESM-1-transfected COS cells. Immunoblotting and immunoprecipitation of HUVEC lysates revealed a specific 20-kDa band corresponding to ESM-1. In addition, constitutive ESM-1 gene expression was shown to be tissue-restricted to the human lung. Southern blot analysis suggests that a single gene encodes ESM-1. A time-dependent up-regulation of ESM-1 mRNA was seen after addition of tumor necrosis factor alpha (TNFalpha) or interleukin (IL)-1beta but not with IL-4 or interferon gamma (IFNgamma) alone. In addition, when IFNgamma was combined with TNFalpha, IFNgamma inhibited the TNFalpha-induced increase of ESM-1 mRNA level. These data suggest that ESM-1 may have potent implications in the areas of vascular cell biology and human lung physiology.
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              Inflammation in bronchial biopsies of subjects with chronic bronchitis: inverse relationship of CD8+ T lymphocytes with FEV1.

              Jill Barnes, Peter Jeffery, Patrick T O’Shaughnessy … (1997)
              In order to determine whether the airway inflammatory cells of chronic obstructive pulmonary disease (COPD) are different from those seen in asthma, we have studied a subepithelial zone, 100 microns deep to the epithelial reticular basement membrane in bronchial biopsies taken from five normal nonsmoking subjects without chronic bronchitis or asthma (FEV1 percentage of predicted [mean +/- SD] 105.7 +/- 25.3), 11 subjects with chronic bronchitis alone (FEV1 percentage of predicted 98.5 +/- 12.9), and 13 subjects with chronic bronchitis in whom there was also evidence of airflow limitation (i.e., COPD; FEV1 percentage of predicted 59.7 +/- 10.0). Using immunohistochemical markers, we counted distinct types of inflammatory cell and expressed them as [median and range] per mm basement membrane. When there was airflow limitation we found significantly increased numbers of CD3+ T lymphocytes (COPD 22.3 [2.6 to 68.2] versus normal 3.7 [1.5 to 16.3]; p < 0.05), an increased number of CD8+ cells (COPD 19.3 [1.8 to 45.5] versus normal 2.3 [0.9 to 4.2]; p < 0.01), and increased expression of HLA-DR (COPD versus normal; p = 0.01). There was also an increased number of CD68+ cells (i.e., macrophages) (COPD 7.4 [0.4 to 16.9] versus normal 0.7 [0 to 2.6]; p < 0.01; COPD versus chronic bronchitis alone 2.7 [0 to 12.8]; p < 0.05). There were no significant differences between the groups in the numbers of subepithelial neutrophils, mast cells, eosinophils or B lymphocytes. There were weak but significant negative associations between the CD8+ T-cell subset (r = -0.42), neutrophils (r = -0.46), and eosinophils (r = -0.53) and FEV1 percentage of predicted in all the chronic bronchitic smokers (p < 0.05). The data confirm the involvement of subepithelial T lymphocytes and macrophages in smoking-induced airflow limitation and provide novel data which support the view that COPD is distinct from asthma with respect to the predominance of the CD8+ T-cell subset in this smoking-related condition.
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                Author and article information

                Journal
                Journal ID (nlm-ta): Int J Chron Obstruct Pulmon Dis
                Journal ID (iso-abbrev): Int J Chron Obstruct Pulmon Dis
                Journal ID (publisher-id): International Journal of COPD
                Title: International Journal of Chronic Obstructive Pulmonary Disease
                Publisher: Dove Medical Press
                ISSN (Print): 1176-9106
                ISSN (Electronic): 1178-2005
                Publication date Collection: 2018
                Publication date (Electronic): 15 October 2018
                Volume: 13
                Pages: 3367-3372
                Affiliations
                [1 ]Department of Pulmonary Medicine, Bezmialem Vakif University, Faculty of Medicine, Istanbul, Turkey
                [2 ]Department of Pulmonary Medicine, Istanbul Faculty of Medicine, Istanbul University, Istanbul, Turkey, kiyanesen@ 123456gmail.com
                Author notes
                Correspondence: Esen Kiyan, Department of Pulmonary Medicine, Istanbul Medical Faculty, Istanbul University, 34360 Capa, Istanbul, Turkey, Tel +90 212 414 2000, Fax +90 212 414 2271, Email kiyanesen@ 123456gmail.com
                Article
                Publisher ID: copd-13-3367
                DOI: 10.2147/COPD.S182731
                PMC ID: 6197208
                PubMed ID: 30410323
                SO-VID: 0d82d173-721f-4d5b-a48e-22842bbbfadb
                Copyright © © 2018 Pihtili et al. This work is published and licensed by Dove Medical Press Limited
                License:

                The full terms of this license are available at https://www.dovepress.com/terms.php and incorporate the Creative Commons Attribution – Non Commercial (unported, v3.0) License ( http://creativecommons.org/licenses/by-nc/3.0/). By accessing the work you hereby accept the Terms. Non-commercial uses of the work are permitted without any further permission from Dove Medical Press Limited, provided the work is properly attributed.

                History
                Categories
                Subject: Original Research

                ScienceOpen disciplines: Respiratory medicine
                Keywords: chronic obstructive pulmonary disease,endothelial cell specific molecule-1,endothelial dysfunction,systemic inflammation
                Data availability:
                ScienceOpen disciplines: Respiratory medicine
                Keywords: chronic obstructive pulmonary disease, endothelial cell specific molecule-1, endothelial dysfunction, systemic inflammation

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