Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/131025
Title: Prominent role of γ-glutamyl-transpeptidase on the growth of Helicobacter pylori
Authors: Gong, M.
Ho, B. 
Issue Date: 15-Oct-2004
Source: Gong, M., Ho, B. (2004-10-15). Prominent role of γ-glutamyl-transpeptidase on the growth of Helicobacter pylori. World Journal of Gastroenterology 10 (20) : 2994-2996. ScholarBank@NUS Repository.
Abstract: Aim: γ-glutamyl transpeptidase (GGT) has been reported as a virulence and co onizing factor of Helicobacter pylori (H pylori). This study examined the effect of GGT on the growth of H pylori. Methods: Standard H pylori strain NCTC 11637 and 4 clinical isolates with different levels of GGT activity as measured by an enzymatic assay were used in this study. Growth inhibition and stimulation studies were carried out by culturing H pylori in brain heart infusion broth supplemented with specific GGT inhibitor (L-serine sodium borate complex, SBC) or enhancer (glutathione together with glycyl-glycine), respectively. The growth profiles of H pylori were determined based on viable bacterial count at time interval. Results: Growth was more profuse for H pylori isolates with higher GGT activity than those present with lower GGT activity. However, in the presence of SBC, growth of H pylori was retarded in a dose dependent manner (P = 0.034). In contrast, higher growth rate was observed when GGT activity was enhanced in the presence of glutathione and glycyl-glycine. Conclusion: Higher GGT activity provides an advantage to the growth of H pylori in vitro. Inhibition of GGT activity by SBC resulted in growth retardation. The study shows that GGT plays an important role on the growth of H pylori. Copyright © 2004 by The WJG Press.
Source Title: World Journal of Gastroenterology
URI: http://scholarbank.nus.edu.sg/handle/10635/131025
ISSN: 10079327
Appears in Collections:Staff Publications

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