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Increased serum levels of carbohydrate-deficient transferrin in patients with chronic obstructive pulmonary disease

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Author

Summary, in English

OBJECTIVE: The reason that only a minority of smokers develop chronic obstructive pulmonary disease (COPD) is still largely unknown. Glycosylation defects are involved in the pathological mechanisms in cystic fibrosis (CF), where chronic progressive obstructive lung disease dominates the clinical picture. Whether defects of protein glycosylation occur in COPD has not previously been examined. Increase in carbohydrate-deficient transferrin (CDT) in serum seems to function as an indicator of general defects of N-glycosylation. Recently, one study observed high serum CDT concentrations in CF patients. We examined whether subjects with COPD also have increased serum CDT levels. METHOD AND RESULTS: A total of 131 randomly selected individuals, 45-64 years of age, underwent a medical examination, spirometry and blood tests. Serum CDT was determined using high performance liquid chromatography. In subjects diagnosed as having COPD (n = 15), multiple logistic regression analyses demonstrated a significant relationship between the diagnosis of COPD and CDT, even after all efforts were made to take the influence of age and smoking into account (odds ratio 3.16, 95% CI 1.11-8.95). Also, in subjects with COPD there was an inverse partial correlation between forced expiratory volume in 1 s (FEV1) and serum CDT (r = -0.81, p = 0.001). CONCLUSION: These results suggest that protein glycosylation defects occur in COPD and, in addition, might be involved in the pathogenetic mechanisms of the disease. It seems that further investigation of the protein glycosylation in COPD is warranted.

Publishing year

2001

Language

English

Pages

341-347

Publication/Series

Scandinavian Journal of Clinical & Laboratory Investigation

Volume

61

Issue

5

Document type

Journal article

Publisher

Informa Healthcare

Topic

  • Gerontology, specializing in Medical and Health Sciences
  • Respiratory Medicine and Allergy

Keywords

  • Glycosylation
  • Glycoproteins
  • Fevi
  • Fibrosis
  • Cdt
  • Cystic
  • Copd
  • Smoking

Status

Published

Research group

  • Geriatric Medicine

ISBN/ISSN/Other

  • ISSN: 1502-7686