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Helicobacter pylori 감염 환자에서 CagA 및 VacA의 혈청학적 인식과 혈청 Gastrin 및 Pepsinogen 농도와의 관계

Other Titles
 Relation of Serum Gastrin and Pepsinogen Levels to Serologic Recognition of CagA and VacA in Helicobacter pylori Infection 
Authors
 김경철  ;  박효진  ;  이홍우  ;  정준근  ;  정준표  ;  이관식  ;  전재윤  ;  이상인  ;  박인서 
Citation
 Korean Journal of Gastroenterology (대한소화기학회지), Vol.29(1) : 25-34, 1997 
Journal Title
 Korean Journal of Gastroenterology (대한소화기학회지) 
ISSN
 1598-9992 
Issue Date
1997
Abstract
Background/Aims: Helicobacter pylori(H. pylori) infection is associated with increases in serum gastrin and pepsinogen(PG) in patients with gastritis and peptic ulcer disease. H. pylori strains show phenotypic heterogeneity in their ability to express CagA(cytotoxin-associated protein) and VacA(vacuolating cytotoxin), which are tbought to be virulence factors. The aim of the study was to investigate whether the biochemical(serum gastrin and PG) changes in H. pylori infection are related to the bacterial expression of CagA and VacA. Methods: The subjects were 80 patients who had underwent diagnostic esophagogastroduodenoscopy; 49 with functional dyspepsia(FD), 10 with gastric ulcer(GU), 10 with duodenal ulcer(DU) and 11 with gastric cancer(GC). H. pylori infection was assessed by rapid urease(CLO) test and histology. Bacterial expression of CagA and VacA was determined indirectly by assaying serum IgG antibodies to these proteins by Western blotting using a Helico Blot 2.0 kit. Basal serum levels of gastrin, PG I and PG II were determined by radioimmunoassay. Results: The serologic positive rate for CagA in H. pylori-positive patients with FD, GU, DU and GC, was 80%, 88%, 100% and 88% respectively. For VacA, positive rate was 41%, 38%, 88%, and 63%, respectively(FD vs DU, p<0.05). Serum level of gastrin and PG were increased in patients with H. pylori-positive FD, GU, DU, and GC compared with patients with H. pylori-negative FD. In the patients with H. pylori-positive FD(n=34), the changes of serum levels of gastrin and PG were more prominent in serologic type I(CagA+/VacA+) infection than either type II(CagA-/VacA-) or type III(CagA+/VacA-) infection, especially the increase in PG I level being significant, Serologic recognition of VacA was associated with increased levels of serum PG I and PG II, whereas serologic recognition of CagA had no significant relation to the changes in serum level of either gastrin or PG. Conclusions: Biocbemical changes in patients with H. pylori infection, especially the increase in serum PG I level, were prominent in serologic type I(CagA+/VacA+) infection. Serologic recognition of VacA, which was more prevalent among DU patients than among FD patients, was associated with increases in serum level of PG I and PG II. Serologic recognition of VacA, as well as the increased level of serum PG, may serve as useful serum markers to predict the clinical status of H. pylori infection.(Korean J Gastroenterol 1997; 29:25 - 34)
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Internal Medicine (내과학교실) > 1. Journal Papers
Yonsei Authors
Park, Hyo Jin(박효진) ORCID logo https://orcid.org/0000-0003-4814-8330
Lee, Kwan Sik(이관식) ORCID logo https://orcid.org/0000-0002-3672-1198
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/177696
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