Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Hypothesis:
COPD patients with frequent exacerbations have different pulmonary and systemic immune response than COPD patients without frequent exacerbations and this is related to their microbiome.
The objective of this project is to determine the pulmonary microbiome and its relationship with the pulmonary and systemic inmune response in COPD patients with frequent (FE) and non frequent exacerbations (NE).
The pulmonary immune response.
-The role of mucins, antimicrobial peptides (AMPs), Matrix metalloproteinases (MMPs) and Toll-like receptors (TLRs) as lung defense mechanisms and their possible relationship with the microbiome in COPD and FE patients.
The systemic immune response. -The pulmonary and blood inflammatory response and circulating bacterial products as markers of the systemic immune response.
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
| Measure | Description | Time Frame |
|---|---|---|
| Relationship of pulmonary microbiome with the immune response (local and systemic). | Microbiome will be determined by using 16s RNA techniques. The inmune response will be studied with ELISA kits. | 6 months |
Not provided
Not provided
Inclusion Criteria:
Exclusion Criteria:
Not provided
Not provided
Clinically stable COPD patients.
| Name | Role | Phone | Extension | |
|---|---|---|---|---|
| Oriol Sibila, PhD | Contact | 932919000 | osibila@santpau.cat |
| Name | Affiliation | Role |
|---|---|---|
| Oriol Sibila Vidal, PhD | Fundació Institut de Recerca de l'Hospital de la Santa Creu i Sant Pau | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Oriol Sibila Vidal | Recruiting | Barcelona | 08041 | Spain |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 22798317 | Background | Mizgerd JP. Respiratory infection and the impact of pulmonary immunity on lung health and disease. Am J Respir Crit Care Med. 2012 Nov 1;186(9):824-9. doi: 10.1164/rccm.201206-1063PP. Epub 2012 Jul 12. | |
| 24317696 | Background | Roy MG, Livraghi-Butrico A, Fletcher AA, McElwee MM, Evans SE, Boerner RM, Alexander SN, Bellinghausen LK, Song AS, Petrova YM, Tuvim MJ, Adachi R, Romo I, Bordt AS, Bowden MG, Sisson JH, Woodruff PG, Thornton DJ, Rousseau K, De la Garza MM, Moghaddam SJ, Karmouty-Quintana H, Blackburn MR, Drouin SM, Davis CW, Terrell KA, Grubb BR, O'Neal WK, Flores SC, Cota-Gomez A, Lozupone CA, Donnelly JM, Watson AM, Hennessy CE, Keith RC, Yang IV, Barthel L, Henson PM, Janssen WJ, Schwartz DA, Boucher RC, Dickey BF, Evans CM. Muc5b is required for airway defence. Nature. 2014 Jan 16;505(7483):412-6. doi: 10.1038/nature12807. Epub 2013 Dec 8. |
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
| ID | Term |
|---|---|
| D008171 | Lung Diseases |
| D029424 | Pulmonary Disease, Chronic Obstructive |
| ID | Term |
|---|---|
| D012140 | Respiratory Tract Diseases |
| D008173 | Lung Diseases, Obstructive |
| D002908 | Chronic Disease |
| D020969 | Disease Attributes |
Not provided
Not provided
Not provided
Not provided
Not provided
Sputum, oral swabs, oral lavage, saliva, brochoalveolar lavage (BAL), bronchial brush, peripheral blood, feces.
| 18776153 | Background | Kirkham S, Kolsum U, Rousseau K, Singh D, Vestbo J, Thornton DJ. MUC5B is the major mucin in the gel phase of sputum in chronic obstructive pulmonary disease. Am J Respir Crit Care Med. 2008 Nov 15;178(10):1033-9. doi: 10.1164/rccm.200803-391OC. Epub 2008 Sep 5. |
| 20935193 | Background | Fujisawa T, Chang MM, Velichko S, Thai P, Hung LY, Huang F, Phuong N, Chen Y, Wu R. NF-kappaB mediates IL-1beta- and IL-17A-induced MUC5B expression in airway epithelial cells. Am J Respir Cell Mol Biol. 2011 Aug;45(2):246-52. doi: 10.1165/rcmb.2009-0313OC. Epub 2010 Oct 8. |
| 15032578 | Background | Yang D, Biragyn A, Hoover DM, Lubkowski J, Oppenheim JJ. Multiple roles of antimicrobial defensins, cathelicidins, and eosinophil-derived neurotoxin in host defense. Annu Rev Immunol. 2004;22:181-215. doi: 10.1146/annurev.immunol.22.012703.104603. |
| 10837369 | Background | Harder J, Meyer-Hoffert U, Teran LM, Schwichtenberg L, Bartels J, Maune S, Schroder JM. Mucoid Pseudomonas aeruginosa, TNF-alpha, and IL-1beta, but not IL-6, induce human beta-defensin-2 in respiratory epithelia. Am J Respir Cell Mol Biol. 2000 Jun;22(6):714-21. doi: 10.1165/ajrcmb.22.6.4023. |
| 21349930 | Background | Parameswaran GI, Sethi S, Murphy TF. Effects of bacterial infection on airway antimicrobial peptides and proteins in COPD. Chest. 2011 Sep;140(3):611-617. doi: 10.1378/chest.10-2760. Epub 2011 Feb 24. |
| 23228114 | Background | Millares L, Marin A, Garcia-Aymerich J, Sauleda J, Belda J, Monso E; PAC-COPD Study Group. Specific IgA and metalloproteinase activity in bronchial secretions from stable chronic obstructive pulmonary disease patients colonized by Haemophilus influenzae. Respir Res. 2012 Dec 11;13(1):113. doi: 10.1186/1465-9921-13-113. |
| 11905821 | Background | Medzhitov R. Toll-like receptors and innate immunity. Nat Rev Immunol. 2001 Nov;1(2):135-45. doi: 10.1038/35100529. |
| 20081863 | Background | Clarke TB, Davis KM, Lysenko ES, Zhou AY, Yu Y, Weiser JN. Recognition of peptidoglycan from the microbiota by Nod1 enhances systemic innate immunity. Nat Med. 2010 Feb;16(2):228-31. doi: 10.1038/nm.2087. Epub 2010 Jan 17. |
| D010335 | Pathologic Processes |
| D013568 | Pathological Conditions, Signs and Symptoms |