Three-year follow-up of Interleukin 6 and C-reactive protein in chronic obstructive pulmonary disease

dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorFerrari, Renata
dc.creatorTanni, Suzana E.
dc.creatorCaram, Laura M.O.
dc.creatorCorrêa, Corina
dc.creatorCorrêa, Camila Renata
dc.creatorGodoy, Irma de
dc.date2014-05-27T11:28:31Z
dc.date2016-10-25T18:44:45Z
dc.date2014-05-27T11:28:31Z
dc.date2016-10-25T18:44:45Z
dc.date2013-02-20
dc.date.accessioned2017-04-06T02:14:23Z
dc.date.available2017-04-06T02:14:23Z
dc.identifierRespiratory Research, v. 14, n. 1, 2013.
dc.identifier1465-9921
dc.identifier1465-993X
dc.identifierhttp://hdl.handle.net/11449/74616
dc.identifierhttp://acervodigital.unesp.br/handle/11449/74616
dc.identifier10.1186/1465-9921-14-24
dc.identifierWOS:000317734600001
dc.identifier2-s2.0-84873948021.pdf
dc.identifier2-s2.0-84873948021
dc.identifierhttp://dx.doi.org/10.1186/1465-9921-14-24
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/895377
dc.descriptionBackground: Past studies have shown that mean values of Interleukin-6 (IL-6) and C-reactive protein (CRP) do not change significantly in COPD patients over a one-year period. However, longer period follow-up studies are still lacking. Thus, the aim of this study is to evaluate plasma CRP and IL-6 concentration over three years in COPD patients and to test the association between these inflammatory mediators and disease outcome markers. Methods: A cohort of 77 outpatients with stable COPD was evaluated at baseline, and 53 (mean FEV1, 56% predicted) were included in the prospective study. We evaluated Interleukin-6 (IL-6), C-reactive protein (CRP), six-minute walking distance (6MWD), and body mass index (BMI) at baseline and after three years. Plasma concentration of IL-6 was measured by high sensitivity ELISA, and CRP was obtained by high sensitivity particle-enhanced immunonephelometry. Results: IL-6 increased significantly after 3 years compared to baseline measurements [0.8 (0.5-1.3) vs 2.4 (1.3-4.4) pg/ml; p < 0.001] and was associated with worse 6MWD performance. In the Cox regression, increased IL-6 at baseline was associated with mortality [Hazard Ratio (95% CI) = 2.68 (0.13, 1.84); p = 0.02]. CRP mean values did not change [5 (1.6-7.9) vs 4.7 (1.7-10) pg/L; p = 0.84], although eleven patients (21%) presented with changes >3 mg/L in CRP after 3 years. Conclusions: The systemic inflammatory process, evaluated by IL-6, seems to be persistent, progressive and associated with mortality and worse physical performance in COPD patients. Trial registration: No.:NCT00605540. © 2013 Ferrari et al; licensee BioMed Central Ltd.
dc.languageeng
dc.relationRespiratory Research
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectBiomarkers
dc.subjectChronic Obstructive Pulmonary Disease
dc.subjectExercise
dc.subjectInflammation
dc.subjectC reactive protein
dc.subjectinterleukin 6
dc.subjectbiological marker
dc.subjectIL6 protein, human
dc.subjectadult
dc.subjectbody mass
dc.subjectchronic obstructive lung disease
dc.subjectclinical evaluation
dc.subjectcontrolled study
dc.subjectdisease association
dc.subjectdisease duration
dc.subjectdisease exacerbation
dc.subjectenzyme linked immunosorbent assay
dc.subjectexercise tolerance
dc.subjectfemale
dc.subjectfollow up
dc.subjecthuman
dc.subjectmajor clinical study
dc.subjectmale
dc.subjectmortality
dc.subjectnutritional status
dc.subjectoutcome assessment
dc.subjectprediction
dc.subjectproportional hazards model
dc.subjectprospective study
dc.subjectprotein blood level
dc.subjectwalking
dc.subjectblood
dc.subjectBrazil
dc.subjectexercise test
dc.subjectmiddle aged
dc.subjectprevalence
dc.subjectrisk factor
dc.subjectstatistics
dc.subjectsurvival
dc.subjectsurvival rate
dc.subjectBiological Markers
dc.subjectC-Reactive Protein
dc.subjectExercise Test
dc.subjectExercise Tolerance
dc.subjectFemale
dc.subjectFollow-Up Studies
dc.subjectHumans
dc.subjectInterleukin-6
dc.subjectMale
dc.subjectMiddle Aged
dc.subjectPrevalence
dc.subjectPulmonary Disease, Chronic Obstructive
dc.subjectRisk Factors
dc.subjectSurvival Analysis
dc.subjectSurvival Rate
dc.titleThree-year follow-up of Interleukin 6 and C-reactive protein in chronic obstructive pulmonary disease
dc.typeOtro


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