title: Cytomegalovirus D.N.A. and adenocarcinoma of the colon: Evidence for latent viral infection.
abstract: The cause of adenocarcinoma of the colon has not been proven and a viral association has not been reported with this disease. A sensitive biochemical technique for the detection of viral nucleic acid was used to determine whether one type of herpesvirus, namely a human strain of cytomegalovirus, was uniquely present in tumour tissue. 24 specimens of colon, obtained at surgery from 14 patients, were analysed by membrane CR.N.A.-D.N.A. hybridisation. 4 of 7 tumours of the colon were definitely positive for C.M.V. D.N.A. (2greater than or equal to 2 genome-equivalents/cell), or repeatedly showed more than 1 genome-equivalent/cell. Macroscopically normal colon 5 cm from the tumour, as well as histologically normal and abnormal colon from a control population with Crohn's disease were uniformly negative for C.M.V. D.N.A., except for 1 specimen which was macroscopically normal tissue from a patient with carcinoma of the colon. Among patients with conditions that predispose to adenocarcinoma of the colon, 1 of 2 patients with familial polyposis and 1 of 3 with ulcerative colitis harboured in their colon greater than or equal to 2 genome-equivalents of C.M.V. D.N.A. per cell, and another ulcerative colitis patient had 1-2 genome-equivalents/cell.
mesh_terms: D000230:Adenocarcinoma / Q000209:etiology* / Q000382:microbiology / Q000473:pathology; D000293:Adolescent; D000328:Adult; D000368:Aged; D002471:Cell Transformation, Neoplastic; D003110:Colonic Neoplasms / Q000209:etiology* / Q000382:microbiology / Q000473:pathology; D003587:Cytomegalovirus / Q000235:genetics / Q000302:isolation & purification*; D003586:Cytomegalovirus Infections / Q000150:complications / Q000382:microbiology; D004279:DNA, Viral / Q000302:isolation & purification*; D005260:Female; D005814:Genes, Viral; D006801:Humans; D008297:Male; D008875:Middle Aged; D009693:Nucleic Acid Hybridization; D012367:RNA, Viral
chemical_list: D004279:DNA, Viral; D012367:RNA, Viral