The impact of smoking on inflammatory biomarkers in patients with chronic obstructive pulmonary disease. accepted April 2016 EgyptianJournalofChestDiseasesandTuberculosis

Faculty of Medicine

Assiut University

The impact of smoking on inflammatory biomarkers in patients with chronic obstructive pulmonary disease.
accepted April 2016 EgyptianJournalofChestDiseasesandTuberculosis

Research Authors
YasserA.Korani
¹,AlaaT.Hassan¹
,EffatA.E.Tony²,
MadleenAdelA.Abdou
Research Department
Internal Medicine
Research Journal
EgyptianJournalofChestDiseasesandTuberculosis
Research Member
Effat Abdel-Hady Tony Ahmed
Research Publisher
Egyptian Journal of Chest Diseases and Tuberculosis www.elsevier.com/locate/ejcdtwww.sciencedirect.com
Research Rank
1
Research Vol
NULL
Research Website
Egyptian Journal of Chest Diseases and Tuberculosis www.elsevier.com/locate/ejcdtwww.sciencedirect.com
Research Year
2016
Research_Pages
NULL
Research Abstract

ABSTRACT

Background:Chronicobstructivepulmonarydisease(COPD)isachronicprogressiveinflammatorydiseasecharacterizedbylimitationsairflowthatisnotfullyreversible(42).ThepathophysiologyofCOPDisnotcompletelyunderstood. Cigarettesmoking is amajorriskfactorforchronicobstructivepulmonarydisease(COPD).ElevatedCRPhasbeenincreasinglyusedasasurrogatemarkerofsystemicinflammationindiverseconditions.TNF-α,apowerfulpro-inflammatorycytokineprimarilyproducedbyactivatedmacrophages,isthoughttoacriticalroleinthepathogenesisofCOPD[13,14].
Theaimofthework:toevaluatetheimpactofsmokingoninflamatorybiomarkersandrelationsbetweenthesebiomarkersandthedeclineoflungfunctioninCOPDpatients.
Methods:Thiscase–controlobservationalprospectivestudywasconductedonfifty-eightclinicallystableCOPDpatients(26non-smokersand32current smokers;at differentstagesrangedfrommildtoverysevere),theirmeanage53.1±14.25and53.9±5.95yearsrespectively),recruitedfromChestDepartment,AssiutUniversityHospitals.AllpatientsmettheGlobalInitiativeforObstructiveLungDisease(GOLD)[4].Allparticipantsweresubjectedtothoroughhistorytaking,fullclinicalexamination,anthropometricmeasurementswithspirometryandchest X-ray.Peripheralhemogram,liverfunctiontests,kidneyfunctiontests,highsensitivityC-reactiveprotein(hsCRP)andserumlevelofTNF-αweremeasuredforbothpatientsandcontrols.
Results:Theconcentrationsofcirculatinghs-CRPandTNF-α,werehighlysignificantlyelevatedinpatientswithCOPDincomparisontothecontrolgroup(3.74±0.2vs.1.30±0.14forhs-CRP;33.88±5.97vs.8.79±0.57forTNF-αwithp<0.0001foreach)andthelevelsofmeasuredTNF-αweresignificantlyincreasedwiththeincreaseddegreeandseverityofCOPDandincreasedseverityofsmokingstatus.RegardingthesmokingstatusofCOPDpatients,therewasahighlysignificantlydifferencefor the measuredTNF-α(53.74±9.52versus12.73±1.20withp<0.0001)withnosignificantdifferenceforthemeasuredhs-CRP(3.87±0.29versus 3.58±0.27withp˃0.05).Interestingly,therewere significant negativecorrelationsbetweenthelevelsofTNF-αand hs-CRP,andFEV1instagesII,III,IVofCOPD.
Conclusions:Thecirculatinglevelsoftheinflammatorymarkershs-CRPandTNF-alphaaresignificantlyelevatedinpatientswithstableCOPDandthesebiomarkerscouldbeusedaspredictorfactorsforseverityofinflammationinCOPDpatients..Longitudinalstudiesevaluatingtheeffectsofsmokingcessationonbronchialandsystemicinflammationareneededtoallowbetterunderstandingoftheserelationshipsandtheirconsequences.
Keywords:COPD,FEV1,inflammatorymarkers;hs-CRPandTNF-alpha.