Jerzy Stachura

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BACKGROUND Helicobacter pylori infection in humans is a major risk factor for peptic ulcer, but studies on the relation between H. pylori infection and gastric pathology are limited due to a deficiency of convenient animal models resembling this infection in humans. METHODS We studied the effects of inoculation of conventional BALB/c mice with CagA and(More)
Oncogenic KRAS mutations are associated with resistance to anti-EGFR therapy in colorectal carcinoma. Since anti-EGFR monoclonal antibodies are employed in clinical practice in advanced colorectal cancer, KRAS mutations have become an important predictor of therapy outcome. Mutational analysis of KRAS was performed on 163 adenocarcinoma samples. Exons 1-3(More)
In primary glomerulonephritis the degree of interstitial fibrosis governs the renal function. Mast cells participate in renal interstitial fibrosis, but its role remains poorly understood. Some of human mast cells contain chymase and chymase may participate in local angiotensin formation. Material consisted of 35 renal biopsies. The diagnoses included(More)
Gastrointestinal stromal tumors (GISTs) are the most common mesenchymal tumors of the gastrointestinal tract. GISTs express KIT and show gain-of-function KIT mutations. Most of these mutations affect the KIT juxtamembrane domain, but other KIT domains are mutated at a lower frequency. In this study, frequency of GCC TAT insertion mutation (1530ins6) in KIT(More)
In this study, ischemia-reperfusion produced in rats by clamping the celiac artery for 0.5 h followed by 1 h of reperfusion was used to develop a new model of superficial gastric erosions progressing to deeper ulcers. Ischemia alone resulted in an immediate fall in gastric blood flow but no gross mucosal lesions were observed. When ischemia was followed by(More)
The function of the sodium iodide symporter (Na(+)/I(-), (NIS), a membrane protein that mediates iodide transport into cells, is the best described in the thyroid cells. NIS is also found in mammary cells during lactation and in breast carcinoma cells. The aim of this study was evaluation of incidence and grade of NIS expression in invasive ductal breast(More)
The present study investigated the involvement of endogenous melatonin in the prevention of pancreatic damage provoked by caerulein-induced pancreatitis (CIP) by using the luzindole, the antagonist of melatonin MT2 receptors. CIP was produced by subcutaneous infusion of caerulein to conscious rats (25 microg/kg). Luzindole (1, 2 or 4 mg/kg) was given as an(More)
OBJECTIVE Helicobacter pylori (Hp) infection is a major risk factor of peptic ulcerations but studies on its pathogenicity are limited due to the lack of an adequate animal model. In this study we developed the new model of gastric Hp infection in rat gastric mucosa, with acute gastric erosions progressing into ulcers in animals subjected initially to(More)
The aim of the study was to evaluate the correlation between thyroid cancer histotype and incidence rate (IR) and iodine nutrition level in two endemic goiter areas: the districts of Krakow and Nowy Sacz. The suspension of iodine prophylaxis in Poland in 1980 resulted in increased goiter prevalence in schoolchildren and adults and elevated TSH levels in(More)
Growth factors and prostaglandins protect the gastric mucosa against stress-induced lesions but their role in the recovery of the mucosa from these lesions has been little studied. We evaluated gastric mucosa lesions, gastric blood flow, mucosal generation of prostaglandin E2 and mucosal gene expression of epidermal growth factor (EGF) and transforming(More)