title: Efficacy and safety of acarbose in patients with cystic fibrosis and impaired glucose tolerance.
abstract: Impaired glucose tolerance (IGT) is an increasingly frequent complication of cystic fibrosis (CF). In CF patients, a fast postprandial rise in plasma glucose is typically followed by a delayed but prolonged insulin response. Patients may develop symptoms of both hyper- and hypoglycaemia. The alpha-glucosidase inhibitor, acarbose, delays the hydrolysis and subsequent absorption of ingested carbohydrates. The aim of this study was to investigate the efficacy of acarbose in CF patients with IGT. During a 2-week inpatient period for treatment of Pseudomonas infection, 12 CF patients with IGT were studied in a double-blinded, randomized crossover trial. Each patient received acarbose (50 mg t.i.d.) for 5 days and placebo for 5 days (days 3-8 and days 10-14, respectively). Glucose, insulin and C-peptide responses to a standardized nutritional load were measured at baseline and at the end of each study period (Days 2, 8 and 14). Treatment with acarbose was associated with significant reductions in the mean value, mean peak values and the area under the curve of plasma glucose, insulin and C-peptide, compared to respective baseline values and placebo. Gastro-intestinal disturbances were recorded in 67% of patients during therapy with acarbose.
  
  
  CONCLUSIONS
  Acarbose has a positive therapeutic effect on glucose tolerance in cystic fibrosis patients, as shown by attenuation of postprandial plasma glucose increase and a significant decrease in insulin secretion response. However, acarbose treatment was associated with adverse gastro-intestinal effects that may prevent patients from accepting long-term therapy.
authors.affiliation: Kinderklinik der RWTH Aachen, Germany.
authors.forename: H
authors.initials: H
authors.lastname: Kentrup
authors.forename: H
authors.initials: H
authors.lastname: Bongers
authors.forename: M
authors.initials: M
authors.lastname: Spengler
authors.forename: G
authors.initials: G
authors.lastname: Kusenbach
authors.forename: H
authors.initials: H
authors.lastname: Skopnik
mesh_terms: D020909:Acarbose; D000293:Adolescent; D000328:Adult; D001786:Blood Glucose / Q000378:metabolism*; D002648:Child; D018592:Cross-Over Studies; D003550:Cystic Fibrosis / Q000097:blood / Q000150:complications*; D004311:Double-Blind Method; D004791:Enzyme Inhibitors / Q000627:therapeutic use*; D005260:Female; D065089:Glycoside Hydrolase Inhibitors; D006801:Humans; D006943:Hyperglycemia / Q000209:etiology / Q000517:prevention & control*; D007003:Hypoglycemia / Q000209:etiology / Q000517:prevention & control*; D007004:Hypoglycemic Agents / Q000627:therapeutic use*; D008297:Male; D014312:Trisaccharides / Q000627:therapeutic use*
chemical_list: D001786:Blood Glucose; D004791:Enzyme Inhibitors; D065089:Glycoside Hydrolase Inhibitors; D007004:Hypoglycemic Agents; D014312:Trisaccharides; D020909:Acarbose