Gene/Protein Disease Symptom Drug Enzyme Compound
Pivot Concepts:   Target Concepts:
Query: EC:6.3.4.6 (urease)
 7,490 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

To investigate the relationship between H. pylori infection and duodenal ulcer in children and adolescents, the markers of H. pylori infection were studied in 22 children and adolescents who had duodenal ulcers and were followed prospectively (Group A). Another 36 patients with gastrointestinal symptoms, but without ulcer, were also studied for comparison (Group B). Antral and duodenal tissues were biopsied and analyzed for the presence of H. pylori using three standard methods: urease test, culture and histology. The specific IgG antibody against H. pylori positivity using the ELISA method were also analysed. By these three methods, H. pylori positivity in the antral tissues, chronic active antral gastritis, and seroprevalence rate were found to be much higher in Group A than Group B. However, a similar trend was not found in the duodenal tissues. H. pylori was found in four of five patients during postoperative follow-up for duodenal ulcer. Among the four patients, no duodenal ulcer but chronic active gastritis was detected endoscopically in three who received vagotomy. Only the one who received simple closure of the perforated duodenal ulcer had a recurrent duodenal ulcer. It was concluded that a close relationship among duodenal ulcer, chronic active gastritis and H. pylori is present in children and adolescents.
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PMID:Helicobacter pylori infection and duodenal ulcer in children and adolescents. 907 77

It is believed that Helicobacter pylori (H. Pylori) plays an important role in the causation of peptic ulcer. However, its role in duodenal ulcer perforation (DUP) has not been investigated extensively and the results are conflicting. The aim of this study was to determine the prevalence of H. pylori in patients with DUP patients as compared to normal healthy volunteers (NHV). Eighty-six consecutives patients with DUP and 30 NHV were included in the study. The NHV, drawn from the Surgery outpatient, were subjected to upper gastrointestinal (UGI) endoscopy and multiple gastric mucosal biopsies. Gastric mucosal biopsies among patients with DUP were obtained during laparotomy by passing a biopsy forcep through the perforation site. Biopsy specimens were put in urea broth for the rapid urease test (RUT), brucella broth (used as a transport medium) for culture and 10% formalin for histopathology. The results were analysed as the percentage of positive cases. The mean (+/-SD) age of patients with DUP (39.4+/-15.5 years) and of the NHV (36.0+/-13.9 years) were comparable (p= 0.290). Sixty-one (70.9%)patients with DUP had used NSAIDs prior to perforation. Only 7 patients with DUP (8.14%) had a past history of symptoms of duodenal ulcer and had been treated for it. A positive history of smoking, alcoholism and tobacco use was present in 68 (78.9%), 59 (68.6%) and 41(47.7%) patient with DUP, respectively. No culture was positive. Histology was positive for H. pylori in 29 patients with DUP and in 2 (6.7%)NHV. RUT was positive for H. pylori in 43(50%) patients with DUP and 5 NHV (16.7%). The present study documented a markedly higher association of H. Pylori infection with perforated duodenal ulcer.
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PMID:Prevalence of Helicobactor pylori in patients with perforated duodenal ulcer. 1568 58