Full-text resources of CEJSH and other databases are now available in the new Library of Science.
Visit https://bibliotekanauki.pl

Results found: 2

first rewind previous Page / 1 next fast forward last

Search results

help Sort By:

help Limit search:
first rewind previous Page / 1 next fast forward last
1
Publication available in full text mode
Content available

The expression of apoptosis-related proteins in patients with ulcerative colitis

100%
Niewiarowska K., Lebelt A., Gryko M., Pryczynicz A., Famulski W., Czyżewska J., Kemona A., Piekarska-Dymicka V., Jagodzińska D., Guzińska-Ustymowicz K.
Progress in Health Sciences
|
2014
|
vol. 4
|
issue 1
75-82
XX
Purpose: Recent literature data indicate a key role of apoptosis in the pathogenesis of inflammatory bowel disease. The aim of the study was to evaluate the expression of Bax, Bid, Bcl-2 and Bcl-xl in non-dysplastic and dysplastic epithelium in inflamated mucosa of patients with ulcerative colitis. Methods: The study consists of 18 patients with diagnosed ulcerative colitis. The expression of proteins was determined immunohistochemically. Results: Lack of Bax expression in normal epithelium of the inflamed intestinal mucosa (94.4%) and a weak expression of this protein were found in dysplastic glandular cells (67%). The Bax expression of dysplastic epithelium correlates with reduced severity of chronic inflammation (p<0.005). Bid expression in non-dysplastic glands was found in 67% of cases vs. 16% in dysplastic epithelium that was associated with the occurrence of epithelial erosions or ulcers (p<0.05). Moderate cytoplasmic expression of Bcl-xl was noted in 27.7% of patients in normal epithelium and in 66.1% within dysplastic lesions. Bcl-xl expression in dysplastic glandular cells correlated with the presence of neutrophils in the lamina propria (p <0.05). Conclusions: The immunohistochemical expressions of Bax, Bcl-2 and Bcl-xl increase and Bid protein expression decreases in dysplastic glandular tubes as compared to non-dysplastic intestinal epithelium in inflamed mucosa, which may suggest an imbalance of controlled cell death in ulcerative colitis.
2
Publication available in full text mode
Content available

Comparison of expression of selected proteins in the cells of intestinal and diffuse type gastric cancer – immunohistochemical analysis

100%
Gryko M., Prycznicz A., Dawidziuk T., Zińczuk J., Cepowicz D., Kamocki Z., Kedra B., Guzińska-Ustymowicz K.
Progress in Health Sciences
|
2014
|
vol. 4
|
issue 1
158-164
XX
Introduction: Despite the progress in gaining knowledge about carcinogenesis, it is still unclear what processes are directly responsible for the differentiation of gastric cancer into its intestinal or diffuse form. Dividing of these two forms is based on one of the oldest, yet still commonly used classifications – the classification of Lauren. There are many factors that may influence the formation of gastric tumors of various aggressiveness. Purpose: To evaluate the expression of proteins: fragile histidine triad (FHIT), E-cadherin, α-catenin, γ-catenin, cathepsin B, epidermal growth factor (EGF), HER-2, MMP-9, MCM-2, Bak, Bax, BID, Bcl-XL, p53, FasL, Bcl-2, caspase-8, procaspase-3 in gastric cancer cells, depending on the type of tumor by Lauren classification. Materials and methods: Study group consisted of 91 patients treated surgically for gastric cancer in the Second Department of General and Gastroenterological Surgery, Medical University of Bialystok in years between 2000 and 2006. Results: It is shown, that the expression of E-cadherin was significantly higher in the Lauren I gastric cancer cells than in Lauren II. In case of caspase-8 there has been significantly less frequent expression of this protein in Lauren I gastric cancer cells compared to Lauren II. The authors describe no statistically significant differences in the expression of other proteins taken into consideration. Conclusions: These results suggest the role of adhesion and apoptosis-related proteins in the development of two different types of gastric cancer according to Lauren’s classification.
first rewind previous Page / 1 next fast forward last
JavaScript is turned off in your web browser. Turn it on to take full advantage of this site, then refresh the page.