title: Hyaluronan production in vitro by fetal lung fibroblasts and epithelial cells exposed to surfactants of N-acetylcysteine.
abstract: Fetal human lung fibroblasts and feline lung epithelial cells were exposed to either a surfactant or N-acetylcysteine in various concentrations for 24-48 hours, after which the hyaluronan concentration in the culture medium was determined. Most of the experiments showed no stimulatory effect of either artificial or natural surfactant on hyaluronan synthesis. N-acetylcysteine 5-100 mg/mL induced progressive stimulation of hyaluronan synthesis by human fetal lung fibroblasts, resulting in a maximum hyaluronan concentration six times that released by unexposed cells. A slight increase in hyaluronan synthesis was also observed after exposure of feline fetal lung epithelial cells to N-acetylcysteine 50-100 micrograms/mL.
authors.affiliation: Department of Pediatrics, Uppsala University, Sweden.
authors.forename: H
authors.initials: H
authors.lastname: Johnsson
authors.forename: P
authors.initials: P
authors.lastname: Heldin
authors.forename: G
authors.initials: G
authors.lastname: Sedin
authors.forename: T C
authors.initials: TC
authors.lastname: Laurent
mesh_terms: D000111:Acetylcysteine / Q000494:pharmacology*; D000818:Animals; D001688:Biological Products; D002415:Cats; D002460:Cell Line; D004338:Drug Combinations; D004847:Epithelial Cells / Q000187:drug effects / Q000378:metabolism; D005233:Fatty Alcohols / Q000494:pharmacology*; D005347:Fibroblasts / Q000187:drug effects / Q000378:metabolism; D006801:Humans; D006820:Hyaluronic Acid / Q000096:biosynthesis*; D008168:Lung / Q000166:cytology / Q000187:drug effects / Q000196:embryology / Q000378:metabolism*; D010743:Phospholipids; D010767:Phosphorylcholine; D011092:Polyethylene Glycols / Q000494:pharmacology*; D011663:Pulmonary Surfactants / Q000494:pharmacology*
chemical_list: D001688:Biological Products; D004338:Drug Combinations; D005233:Fatty Alcohols; D010743:Phospholipids; D011663:Pulmonary Surfactants; D010767:Phosphorylcholine; D011092:Polyethylene Glycols; D006820:Hyaluronic Acid; C047049:dipalmitoylphosphatidylcholine, hexadecanol, tyloxapol drug combination; C068291:poractant alfa; D000111:Acetylcysteine