Volume 126, Issue 1, Pages 369-371 (January 2004) Helicobacter pylori eradication down-regulates matrix metalloproteinase-9 expression in chronic gastritis and gastric ulcer Silvio Danese, Alfredo Papa, Antonio Gasbarrini, Riccardo Ricci, Nicola Maggiano Gastroenterology Volume 126, Issue 1, Pages 369-371 (January 2004) DOI: 10.1053/j.gastro.2003.06.007
Figure 1 MMP-9 expression in patients with chronic gastritis and peptic ulcer before and after H. pylori eradication. Twenty-five patients H. pylori positive (18 with chronic gastritis and 7 with gastric ulcer) were eradicated and MMP-9 expression was assessed by immunohistochemical analysis, and scored from 2 to 0. ∗P < 0.01, ∗∗P < 0.001, before and after eradication. Values are mean ± SEM. Gastroenterology 2004 126, 369-371DOI: (10.1053/j.gastro.2003.06.007)