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Related Experiment Videos

The interactions between cigarette smoking and reduced lung function on systemic inflammation.

Wen Qi Gan1, S F Paul Man, Don D Sin

  • 1James Hogg iCAPTURE Center for Cardiovascular and Pulmonary Research, St. Paul's Hospital, Room No. 368A, 1081 Burrard St, Vancouver, BC, V6Z 1Y6 Canada.

Chest
|February 12, 2005
PubMed
Summary
This summary is machine-generated.

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Active cigarette smoking and reduced forced expiratory volume in one second (FEV(1)) significantly increase systemic inflammation. Combined, these factors show an additive effect on inflammation markers, highlighting potential interactions in disease development.

Area of Science:

  • Pulmonary Medicine
  • Cardiovascular Health
  • Inflammation Research

Background:

  • Low-grade systemic inflammation is linked to reduced forced expiratory volume in one second (FEV(1)).
  • Active cigarette smoking is a primary risk factor for decreased FEV(1) and independently induces systemic inflammation.

Purpose of the Study:

  • To investigate the independent and combined effects of active smoking and reduced FEV(1) on systemic inflammation.
  • To explore potential interactions between smoking and FEV(1) in modulating inflammatory markers.

Main Methods:

  • Cross-sectional survey of 7,685 US adults (aged >= 40) from the Third National Health and Nutrition Examination Survey.
  • Participants stratified by FEV(1) quartiles and smoking status (serum cotinine).
  • Serum C-reactive protein (CRP), fibrinogen, leukocytes, and platelets analyzed using multiple logistic regression.

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Main Results:

  • Active smoking increased odds of elevated CRP by 63% (OR, 1.63).
  • Reduced FEV(1) showed an adjusted OR of 2.27 for elevated CRP.
  • Combined risk factors yielded an OR of 3.31 for elevated CRP, with similar trends for leukocytes and fibrinogen.

Conclusions:

  • Active smoking and reduced FEV(1) have an additive effect on systemic inflammation markers.
  • Potential interactions between smoking and FEV(1) may contribute to systemic complications in individuals with poor lung function.