Patients with cystic fibrosis, a genetically inherited disease, suffer from hypersecretion of abnormally thick mucus that obstructs the air passages of the bronchial tubes. This blockage leads to the development of infections, thereby increasing the severity of the disease. Both the visco-elastic properties of mucus and the ability of bacteria to adhere to it are dependent, at least in part, on the carbohydrates moieties of bronchial mucin glycoproteins. We propose to investigate whether the structures of the carbohydrate side chains of bronchial mucins of patients with cystic fibrosis are aberrant when compared to the carbohydrate side chains of mucins obtained by bronchial lavage of health individuals. The carbohydrate structures of the mucins of cystic fibrosis patients will also be compared to those of the mucins of patients with nongenetic chronic obstructive diseases of air passages that are associated with hypersecretion of mucus, namely, chronic bronchitis and bronchiectasis. Knowledge of the structures of the mucin carbohydrates and whether their structures are aberrant in mucoviscidosis may elucidate the molecular basis of cystic fibrosis.

Agency
National Institute of Health (NIH)
Institute
National Heart, Lung, and Blood Institute (NHLBI)
Type
Research Project (R01)
Project #
5R01HL038213-03
Application #
3354322
Study Section
Pathobiochemistry Study Section (PBC)
Project Start
1987-04-01
Project End
1991-03-31
Budget Start
1989-04-01
Budget End
1991-03-31
Support Year
3
Fiscal Year
1989
Total Cost
Indirect Cost
Name
University of Georgia
Department
Type
Schools of Arts and Sciences
DUNS #
City
Athens
State
GA
Country
United States
Zip Code
30602
van Halbeek, H; Strang, A M; Lhermitte, M et al. (1994) Structures of monosialyl oligosaccharides isolated from the respiratory mucins of a non-secretor (O, Lea+b-) patient suffering from chronic bronchitis. Characterization of a novel type of mucin carbohydrate core structure. Glycobiology 4:203-19
Klein, A; Carnoy, C; Wieruszeski, J M et al. (1992) The broad diversity of neutral and sialylated oligosaccharides derived from human salivary mucins. Biochemistry 31:6152-65
Lhermitte, M; Rahmoune, H; Lamblin, G et al. (1991) Structures of neutral oligosaccharides isolated from the respiratory mucins of a non-secretor (O, Le(a+b-)) patient suffering from chronic bronchitis. Glycobiology 1:277-93
Das, A; Hugenholtz, J; Van Halbeek, H et al. (1989) Structure and function of a menaquinone involved in electron transport in membranes of Clostridium thermoautotrophicum and Clostridium thermoaceticum. J Bacteriol 171:5823-9
Spellman, M W; Basa, L J; Leonard, C K et al. (1989) Carbohydrate structures of human tissue plasminogen activator expressed in Chinese hamster ovary cells. J Biol Chem 264:14100-11
Argade, S P; Daves Jr, G D; Van Halbeek, H et al. (1989) The effect of alkaline borohydride treatment on N-linked carbohydrates of glycoproteins. Glycoconj J 6:45-56
Finne, J; Breimer, M E; Hansson, G C et al. (1989) Novel polyfucosylated N-linked glycopeptides with blood group A, H, X, and Y determinants from human small intestinal epithelial cells. J Biol Chem 264:5720-35
Van Halbeek, H; Breg, J; Vliegenthart, J F et al. (1988) Isolation and structural characterization of low-molecular-mass monosialyl oligosaccharides derived from respiratory-mucus glycoproteins of a patient suffering from bronchiectasis. Eur J Biochem 177:443-60
Green, E D; Adelt, G; Baenziger, J U et al. (1988) The asparagine-linked oligosaccharides on bovine fetuin. Structural analysis of N-glycanase-released oligosaccharides by 500-megahertz 1H NMR spectroscopy. J Biol Chem 263:18253-68