title: Intestinal permeability in the assessment of intestinal toxicity of cytotoxic agents.
abstract: The diagnosis and assessment of the severity of intestinal mucosal damage in cancer patients treated with cytotoxic drugs still rely on anamnestic data. There is cumulative evidence that measurement of intestinal permeability may represent a sensitive indicator of intestinal damage by cytotoxic agents. The intestinal permeability testing is based on differential permeability of tight junctions along the crypt-villus axis to nonmetabolized sugars. Cytotoxic drugs induce flattening of villi, leading to increased exposure of luminal contents to crypts and increased disaccharide absorption. An increased disaccharide/monosaccharide ratio and decreased xylose absorption have been described in patients treated with different cytotoxic drugs across a spectrum of malignant tumors that correlated with clinical manifestations, and were used to monitor the effect of therapeutic interventions.
authors.affiliation: Department of Oncology and Radiotherapy, Charles University Medical School Teaching Hospital, Hradec Králové, Czech Republic. melichar@fnhk.cz
authors.forename: Bohuslav
authors.initials: B
authors.lastname: Melichar
authors.forename: Josef
authors.initials: J
authors.lastname: Dvorák
authors.forename: Radomír
authors.initials: R
authors.lastname: Hyspler
authors.forename: Zdenek
authors.initials: Z
authors.lastname: Zadák
mesh_terms: D000970:Antineoplastic Agents / Q000009:adverse effects*; D006801:Humans; D007410:Intestinal Diseases / Q000139:chemically induced* / Q000175:diagnosis*; D007413:Intestinal Mucosa / Q000187:drug effects / Q000276:immunology / Q000378:metabolism*; D052016:Mucositis / Q000139:chemically induced / Q000175:diagnosis; D009369:Neoplasms / Q000150:complications* / Q000188:drug therapy; D010539:Permeability
chemical_list: D000970:Antineoplastic Agents