AIM To investigate the roles of the neuropeptides vasoactive intestinal peptide (VIP), substance P (SP), and calcitonin gene-related peptide (CGRP) in chronic gastritis and duodenitis in children. METHODS Biopsy samples from the gastric and duodenal mucosa of 52 patients and 30 control subjects were obtained. Samples were taken for pathological examination, immunohistochemical staining, enzym...

BACKGROUND Diarrhea is a frequently occurring adverse event during treatment with vascular endothelial growth factor receptor tyrosine kinase inhibitors (VEGFR TKIs) and is mostly accompanied by abdominal cramps, flatulence and pyrosis. These complaints impair quality of life and lead to dose reductions and treatment interruptions. It is hypothesized that the diarrhea might be due to ischemia i...

The aim of this study was to analyze the data of endoscopy and symptoms in 118 Mexican patients with irritable bowel syndrome (IBS), dyspepsia, non-erosive reflux disease (NERD) and erosive esophagitis (EE). IBS criteria were fulfilling for dyspepsia patients in 47%, for NERD in 48%, and for EE patients in 48% of cases. Esophagitis was present in 42% of patients with IBS and in 45% of patients ...

BACKGROUND Evidence for a causal relationship between presence of Helicobacter pylori (H. pylori) in gastric mucosa and development of peptic disease is based largely on intervention studies in which eradication of H. pylori led to healing of the lesion. The aim of this study was to assess the importance of H. pylori seropositivity for subsequent development of peptic disease in a prospective s...

Cytomegalovirus (CMV) duodenitis is a rare occurrence, especially in pediatric patients. A thirteen-month-old female presented to the Emergency Department for a febrile seizure. She was incidentally admitted for severe malnutrition with an initial workup remarkable for only a slight elevation in her ALT at 48. The patient was found to have an oral aversion requiring nasogastric tube feeds for a...

An experimental model for H. pylori infection was established by intragastrically challenging BALB/c mice with 1 ml (10(8) CFU/ml) of suspension for two consecutive days. Animals were divided into three groups. GA: mice inoculated with fresh bacteria; GB: mice inoculated with frozen bacteria, and GC: mice inoculated with brucella broth (control group). Animals were killed at 7, 14, 21, 28, 35 a...

In order to assess the value of human cytomegalovirus (HCMV) DNA amplification of gastrointestinal biopsies, we studied 57 human immunodeficiency virus-infected patients with and without gastrointestinal HCMV diseases. After DNA extraction, a 406-bp fragment from the unique short region of the HCMV genome was amplified by 35 cycles of polymerase chain reaction (PCR) and semiquantified from 80 t...