Gastric epithelial cells stimulate Helicobacter pylori growth.

Abstract:

:Helicobacter pylori infects only human gastric epithelium, causes gastritis, and is strongly associated with gastroduodenal ulceration and gastric cancer. Colonization of the stomach with H. pylori is accompanied in the acute stage by an increased number of neutrophils in the lamina propria, indicative of gastric inflammation. It is interesting that H. pylori colonizes specifically human gastric-type epithelial cells. We studied whether the presence of gastric epithelial cells influenced H. pylori growth. H. pylori (NCTC 11637) was cultured on Skirrow agar with 7% horse blood. Kato-III cells, a human gastric cancer cell line, were cultured with RPMI 1640 plus 10% fetal bovine serum (FBS). Kato-III cells (10(5)/ml) were cultured with/ without H. pylori (10(8) cfu/ml) with RPMI 1640 + 1% FBS for 3 days. The number of Kato-III cells was counted with a hemacytometer. H. pylori with/without Kato-III cells was cultured with RPMI 1640 + 10% FBS for 2 hours, and plated on Skirrow agar. After 3 days we counted the number of H. pylori colonies. To detect the H. pylori colonies, we used a colony hybridization method. DNA of colonies was transferred to positively charged nylon membrane and hybridized by PCR with Hpl (5'-CTG-GAG-AGA-CTA-AGC-CCT-CC-3') and Hp2 (5'-ATT-ACT-GAC-GCT-GAT-TGT-GC-3')-amplified primers. We previously reported that the number of Kato-III cells was significantly decreased by co-incubation with H. pylori. The number of H. pylori colonies was significantly increased by coincubation with Kato-III cells. We conclude that the presence of human gastric epithelial cells is important for the growth of H. pylori.

journal_name

J Clin Gastroenterol

authors

Nakajima N,Kuwayama H,Ito Y,Iwasaki A,Arakawa Y

doi

10.1097/00004836-199800001-00021

subject

Has Abstract

pub_date

1998-01-01 00:00:00

pages

S138-40

eissn

0192-0790

issn

1539-2031

journal_volume

27 Suppl 1

pub_type

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