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Direct DNA Amplification and Restriction Pattern Analysis of Helicobacter pylori in Patients with Duodenal Ulcer and Their Families
Jin Town Wang, Jin Chuan Sheu, Jaw Town Lin, Teh Hong Wang and Ming Shiang Wu
The Journal of Infectious Diseases
Vol. 168, No. 6 (Dec., 1993), pp. 1544-1548
Published by: Oxford University Press
Stable URL: http://www.jstor.org/stable/30113713
Page Count: 5
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Sera from 14 patients with duodenal ulcer and their families were tested for IgG antibodies to Helicobacter pylori Fourteen serologically negative patients and their families served as controls. Index patients and their family members who were serologically positive were advised to undergo endoscopic biopsy. Gastric biopsy tissues were subjected to Haelll restriction analysis of nested polymerase chain reaction products of the urease gene. By serology, 28 (49.00Zo) of 57 in index families and 11 (27.50Zo) of 40 in control families tested positive. A higher prevalence rate was found in children of index patients (11/31, 35.507o) than in those of control patients (1/18, 5.607o; P < .05). On DNA analysis, 11 patterns were found in 13 patients, and 6 families underwent endoscopy. Children in 5 families exhibited identical patterns to those of their siblings and, in 3 of the 5 families, identical to the pattern of 1 of the parents. These results suggest that parent-tochild transmission and common infection source are probable causes of intrafamilial clustering of H. pylori.
The Journal of Infectious Diseases © 1993 Oxford University Press