Helicobacter pylori isolated from a patient with Ménétrier's disease increases hepatocyte growth factor mRNA expression in gastric fibroblasts: comparison with Helicobacter pylori isolated from other gastric diseases

Ménétrier's disease diagnosed by enteroclysis CT: a case report and review of the literature

This study reports a case of Ménétrier's disease (MD) in an adult who presented with epigastric pain and peripheric edema. We focused in particular on the imaging and diagnostic aspects of the presenting case as well as clinical, histologic, and therapeutic aspects. Computed tomography (CT) enteroclysis is a new imaging technique which combines enteroclysis and spiral multislice CT. To the best of our knowledge this is the first report on a MD in an adult patient diagnosed by CT Enteroclysis.

Synergistic effect of HLA class II loci and cytokine gene polymorphisms on the risk of gastric cancer in Japanese patients with Helicobacter pylori infection

It has been reported that polymorphisms of human leukocyte antigen (HLA) genes and several cytokine genes are associated with an increased risk of developing gastric cancer (GC). However, the results of studies from different geographic regions, ethnic groups and study groups are inconsistent. The aim of this study was to evaluate the influence of H. pylori infection and host genetic factors on GC susceptibility in Japanese patients with GC. We analyzed genotypes for HLA class I and II, tumor necrosis factor alpha, interleukin (IL)-1beta, IL-1 receptor, IL-4, IL-4Ralpha and IL-10 in 330 H. pylori-infected noncardia patients with GC and 190 H. pylori-infected nonulcer dyspeptic controls. Haplotype analyses indicated that the frequencies of the HLA DRB1*0405 and DQB1*0401 alleles were increased in the patients with intestinal-type GC when compared with controls (both DRB1*0405 and DQB1*0401: p = 0.015, OR = 1.57, 95% CI = 1.09-2.26), but the changes were not statistically significant after correction for multiple comparisons. None of the cytokine gene polymorphisms were associated with GC susceptibility, whether patients with GC were analyzed as a group according to the histological subtype. Of interest was the comparison of controls and patients with intestinal-type GC. The frequency of an IL-10-592AA homozygote showing concomitant carriage of the HLA DRB1*0405-DQB1*0401 haplotype was significantly higher in patients with intestinal-type GC (chi(2) = 6.369, p = 0.0116, p(c) = 0.0464, OR = 2.43, 95% CI = 1.21-4.48). Our results suggest that the HLA class II and IL-10-592A/C polymorphisms synergistically affect the susceptibility to GC development of H. pylori-infected individuals in the Japanese population.

NF-kappaB signaling, liver disease and hepatoprotective agents

The NF-kappaB signaling pathway has particular relevance to several liver diseases including hepatitis (liver infection by Helicobacter, viral hepatitis induced by HBV and HCV), liver fibrosis and cirrhosis and hepatocellular carcinoma. Furthermore, the NF-kappaB signaling pathway is a potential target for development of hepatoprotective agents. Several types of drugs including: selective estrogen receptor modulators (SERMs), antioxidants, proteasome inhibitors, IKK inhibitors and nucleic acid-based decoys have been shown to interfere with NF-kappaB activity at different levels and may be useful for the treatment of liver diseases. However, NF-kappaB also plays an important hepatoprotective function that needs to be taken into consideration during development of new therapeutic regimens.

Ménétrier's disease associated with Kaposi's sarcoma

Ménétrier's Disease is a giant fold gastropathy whose precise etiology has remained enigmatic. However, mucosal changes characteristic of Ménétrier's Disease have been linked to diverse pathologies, both infectious and malignant. Here, we describe a novel association: Ménétrier's mucosa developing on top of underlying Kaposi's Sarcoma. Two male patients, ages 24 and 31, with HIV/AIDS underwent gastric biopsies that demonstrated Kaposi's Sarcoma. When the former patient expired, a more complete postmortem histologic examination of his stomach was undertaken. For each patient, endoscopic findings at the time of biopsy revealed thickened gastric mucosa overlying the Kaposi's changes. Microscopically, this thickened mucosa comprised hyperplastic foveolar cells that extended to the muscularis mucosa, characteristic of Ménétrier's mucosa. In both cases, special stains confirmed this impression. Dissection of the 24 year-old patient's stomach at autopsy demonstrated that the Ménétrier's mucosa was limited to areas where there was underlying Kaposi's Sarcoma, and that this mucosa was not present when the underlying stroma was normal. Our findings indicate, therefore, an association between Ménétrier's mucosal changes and Kaposi's Sarcoma; such an association has not, to our knowledge, been described previously in the literature.