title: Etretinate increases carcinoembryonic antigen in palmar scrapings.
abstract: BACKGROUND
  Retinoids can affect epithelial structure and function. Patients who take etretinate can develop stickiness of their palms and soles.
  
  
  OBJECTIVE
  We measured carcinoembryonic antigen, a representative glycoprotein in palmar scrapings, to see whether levels were increased in patients taking etretinate when compared with a variety of controls.
  
  
  METHODS
  Carcinoembryonic antigen was measured by a standard immunoassay in scrapings taken from the palm.
  
  
  RESULTS
  Carcinoembryonic antigen is increased in palmar scrapings in patients taking etretinate.
  
  
  CONCLUSIONS
  Etretinate usage may affect sweat gland function or possibly adherence of carcinoembryonic antigen to surface keratinocytes. The presence of increased amounts of glycoprotein on the surface of the skin may explain the stickiness often noted by patients taking etretinate.
authors.affiliation: Department of Dermatology and Dermatologic Surgery, University of Miami School of Medicine, Florida.
authors.forename: N S
authors.initials: NS
authors.lastname: Penneys
authors.forename: R
authors.initials: R
authors.lastname: Taylor
authors.forename: D
authors.initials: D
authors.lastname: Hernandez
mesh_terms: D002272:Carcinoembryonic Antigen / Q000032:analysis*; D005050:Etretinate / Q000627:therapeutic use*; D006225:Hand; D006801:Humans; D008727:Methotrexate / Q000627:therapeutic use; D011565:Psoriasis / Q000188:drug therapy* / Q000276:immunology; D012867:Skin / Q000276:immunology*
chemical_list: D002272:Carcinoembryonic Antigen; D005050:Etretinate; D008727:Methotrexate