A precise forecast of the end point of chronic gastritis from a single set of biopsy specimens cannot be made. For example, one cannot say with any confidence whether a 30-year old patient with SCH772984 price a non-atrophic H. pylori gastritis will or will not progress to develop an atrophic gastritis, and if it were the case which morphological and topographical type (plus or minus intestinal metaplasia) might ensue decades later. Following the World Congress presentation and publication of the Sydney System some prominent American pathologists expressed their disquiet. They considered it a “European” enterprise. Correa and Yardley, and Rubin, criticized

the System in Gastroenterology18,19 for failing to take account of all the gastritides, and considered it was not a classification per se. However as already pointed out the goal of the Sydney

System was not to be a textbook of gastric pathology but designed to encourage a standard methodology for the reporting of the appearances of the H. pylori gastritis and its consequences. Following the American initiative, a new two-day consensus meeting was arranged in Houston in 1994, after which another consensus report, the “Up-Dated Sydney System”, was published in 1997 Peptide 17 molecular weight by Dixon, Genta and Correa.20 In practice, in our opinion, this up-dated system merely added the recommendation to include biopsies from the angulus of the stomach (the presence of intestinal metaplasia in the angulus may be an early sign of atrophic multifocal gastritis), and it provided a helpful “visual analogue scale” for the grading of the histological parameters (chronic inflammation, activity, atrophy, intestinal metaplasia and H. pylori) that had been already listed in the original Sydney System. Both the original Sydney System and the Up-Dated version are still acceptable guidelines and are in use in many centers throughout the

world. medchemexpress Adoption of the guidelines in everyday practice has enhanced evidence-based medicine in understanding the dynamics and management of patients with chronic gastritis and highlighted the fact that the interpretation of gastric mucosal pathology by endoscopy alone is not reliable, and not good clinical practice. Current and future research in the field of chronic gastritis correlated with the biopsy appearances should permit a more accurate forecast of outcome than is possible with the Sydney System. For example, techniques that elucidate alterations in signaling pathways or changes in the molecular pathology of the gastric epithelium to be visualized on tissue sections may provide such tools. In addition a non-invasive approach might be through the assay of the various gastric biomarkers from tissue fluids and blood plasma.21 “
“We read with interest the article by Kotronen et al.