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H. pylori-Eradication Therapy Increases RUNX3 Expression in the Glandular Epithelial Cells in Enlarged-Fold Gastritis.

Suzuki M, Suzuki H, Minegishi Y, Ito K, Nishizawa T, Hibi T - J Clin Biochem Nutr (2010)

Bottom Line: A fourfold higher mucosal ChL value was observed in the corpus as compared with that in the antrum.HP-eradication significantly decreased the mucosal ChL values in both portions of the stomach to nearly undetectable levels.Conclusion.

View Article: PubMed Central - PubMed

Affiliation: Division of Gastroenterology, National Hospital Organization Tokyo Medical Center, 2-5-1 Higashigaoka, Meguro-ku, Tokyo 152-8902, Japan.

ABSTRACT
Helicobacter pylori (HP)-eradication therapy increases Runt domain transcription factor 3 (RUNX3) expression in the glandular epithelial cells in enlarged-fold gastritis. The aim of this study is to evaluate expression of the RUNX3 protein, the product of a gastric tumor suppression gene, and mutagenic oxidative stress in human gastric mucosal specimens obtained from patients with HP-induced enlarged-fold gastritis. Methods. RUNX3 expression was immunohistochemically scored and the degree of the mucosal oxidative stress was directly measured by the chemiluminescense (ChL) assay in the biopsy specimens. Results. RUNX3 expression was detected in the gastric epithelial cells. HP-eradication significantly increased RUNX3 expression in the glandular epithelium of the corpus, however, no change was observed in those of the antrum. A fourfold higher mucosal ChL value was observed in the corpus as compared with that in the antrum. HP-eradication significantly decreased the mucosal ChL values in both portions of the stomach to nearly undetectable levels. Conclusion. The glandular epithelium is exposed to a high level of carcinogenic oxidative stress and shows low levels of expression of the tumor suppressive molecule, RUNX3; however, this expression was restored after HP-eradication, suggesting the high risk of carcinogenesis associated with HP-induced enlarged-fold gastritis of the corpus.

No MeSH data available.


Related in: MedlinePlus

Histological score for RUNX3 expression in the antral epithelial cells pre- and post-HP eradication. The protein expression in the surface and glandular epithelial cells was unchanged after HP eradication.
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Figure 4: Histological score for RUNX3 expression in the antral epithelial cells pre- and post-HP eradication. The protein expression in the surface and glandular epithelial cells was unchanged after HP eradication.

Mentions: Figs. 4 and 5 show the immunohistochemical scores for RUNX3 expression in the epithelial cells. Semi-quantitative analysis demonstrated that the RUNX3 expression in the surface epithelium was unchanged following HP eradication (antrum: 1.15 ± 0.55 to 1.00 ± 0.41, n.s., corpus: 1.31 ± 0.63 to 1.08 ± 0.28, n.s.). While no increase of the protein expression in the glandular epithelium was also observed in the antrum (1.38 ± 0.65 to 1.54 ± 0.52, n.s.), that in the corpus significantly increased following HP eradication (1.85 ± 0.55 to 2.54 ± 0.52, p<0.01).


H. pylori-Eradication Therapy Increases RUNX3 Expression in the Glandular Epithelial Cells in Enlarged-Fold Gastritis.

Suzuki M, Suzuki H, Minegishi Y, Ito K, Nishizawa T, Hibi T - J Clin Biochem Nutr (2010)

Histological score for RUNX3 expression in the antral epithelial cells pre- and post-HP eradication. The protein expression in the surface and glandular epithelial cells was unchanged after HP eradication.
© Copyright Policy - open-access
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC2872232&req=5

Figure 4: Histological score for RUNX3 expression in the antral epithelial cells pre- and post-HP eradication. The protein expression in the surface and glandular epithelial cells was unchanged after HP eradication.
Mentions: Figs. 4 and 5 show the immunohistochemical scores for RUNX3 expression in the epithelial cells. Semi-quantitative analysis demonstrated that the RUNX3 expression in the surface epithelium was unchanged following HP eradication (antrum: 1.15 ± 0.55 to 1.00 ± 0.41, n.s., corpus: 1.31 ± 0.63 to 1.08 ± 0.28, n.s.). While no increase of the protein expression in the glandular epithelium was also observed in the antrum (1.38 ± 0.65 to 1.54 ± 0.52, n.s.), that in the corpus significantly increased following HP eradication (1.85 ± 0.55 to 2.54 ± 0.52, p<0.01).

Bottom Line: A fourfold higher mucosal ChL value was observed in the corpus as compared with that in the antrum.HP-eradication significantly decreased the mucosal ChL values in both portions of the stomach to nearly undetectable levels.Conclusion.

View Article: PubMed Central - PubMed

Affiliation: Division of Gastroenterology, National Hospital Organization Tokyo Medical Center, 2-5-1 Higashigaoka, Meguro-ku, Tokyo 152-8902, Japan.

ABSTRACT
Helicobacter pylori (HP)-eradication therapy increases Runt domain transcription factor 3 (RUNX3) expression in the glandular epithelial cells in enlarged-fold gastritis. The aim of this study is to evaluate expression of the RUNX3 protein, the product of a gastric tumor suppression gene, and mutagenic oxidative stress in human gastric mucosal specimens obtained from patients with HP-induced enlarged-fold gastritis. Methods. RUNX3 expression was immunohistochemically scored and the degree of the mucosal oxidative stress was directly measured by the chemiluminescense (ChL) assay in the biopsy specimens. Results. RUNX3 expression was detected in the gastric epithelial cells. HP-eradication significantly increased RUNX3 expression in the glandular epithelium of the corpus, however, no change was observed in those of the antrum. A fourfold higher mucosal ChL value was observed in the corpus as compared with that in the antrum. HP-eradication significantly decreased the mucosal ChL values in both portions of the stomach to nearly undetectable levels. Conclusion. The glandular epithelium is exposed to a high level of carcinogenic oxidative stress and shows low levels of expression of the tumor suppressive molecule, RUNX3; however, this expression was restored after HP-eradication, suggesting the high risk of carcinogenesis associated with HP-induced enlarged-fold gastritis of the corpus.

No MeSH data available.


Related in: MedlinePlus