title: Bile acid malabsorption in HIV infected patients with chronic diarrhoea.
abstract: OBJECTIVE
  To look for the presence of bile acid malabsorption in HIV infected patients with chronic diarrhoea and determine whether bile sequestering agents may have a role in palliating this common problem.
  
  
  METHODS
  Nineteen HIV infected patients with chronic diarrhoea (duration > one month) poorly controlled on conventional treatment were investigated using the seven day retention of 75seleno-23-homocholic acid taurine (SeHCAT) as a measure of bile acid loss from the enterohepatic circulation. Patients with evidence of bile acid malabsorption were offered cholestyramine.
  
  
  RESULTS
  Sixteen (84%) had evidence of bile acid malabsorption (< 15% retention at seven days). Ten of the 16 patients with bile acid malabsorption had terminal ileal biopsies-six had ileitis and four normal histology, suggesting that malabsorption is not always related to terminal ileitis. Thirteen patients with bile acid malabsorption have been treated with cholestyramine and 11 have reported a symptomatic response.
  
  
  CONCLUSIONS
  Bile acid malabsorption can be demonstrated in some cases of HIV associated chronic diarrhoea and we suggest a therapeutic trial of a bile sequestering agent in patients whose symptoms are not well controlled using conventional anti-diarrhoeal agents.
authors.affiliation: Institute of Liver Studies, King's College Hospital, School of Medicine and Dentistry, London, UK.
authors.forename: M E
authors.initials: ME
authors.lastname: Cramp
authors.forename: M C
authors.initials: MC
authors.lastname: Hing
authors.forename: D J
authors.initials: DJ
authors.lastname: Marriott
authors.forename: J
authors.initials: J
authors.lastname: Freund
authors.forename: D A
authors.initials: DA
authors.lastname: Cooper
mesh_terms: D000328:Adult; D001647:Bile Acids and Salts / Q000378:metabolism*; D002792:Cholestyramine Resin / Q000627:therapeutic use*; D005260:Female; D019053:HIV Enteropathy / Q000000981:diagnostic imaging / Q000188:drug therapy* / Q000378:metabolism*; D006801:Humans; D008297:Male; D011877:Radionuclide Imaging; D012644:Selenium Radioisotopes; D013656:Taurocholic Acid / Q000031:analogs & derivatives
chemical_list: D001647:Bile Acids and Salts; D012644:Selenium Radioisotopes; D002792:Cholestyramine Resin; D013656:Taurocholic Acid; C033638:23-seleno-25-homotaurocholic acid