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Barrett's esophagus associates with a variant of IL23R gene

100%

Gaj P., Mikula M., Wyrwicz L., Regula J., Ostrowski J.

2008

vol. 55

issue 2

365-369

Gastroesophageal reflux disease is regarded as a spectrum of diseases: non-erosive reflux disease (NERD), erosive reflux disease (ERD), and the far end of the spectrum represented by patients with Barrett's esophagus. Among predisposing factors, both risk and protective polymorphic variants of several genes may influence the clinical outcomes of reflux disease. Consequently, different molecular mechanisms are likely to underlie the development of clinical variants of reflux disease. Ninety six patients with reflux disease were screened for polymorphisms of CARD15, SLC22A4 (OCTN1), SLC22A5 (OCTN2), DLG5, ATG16L1 and IL23R genes which had previously been found to associate with immune-mediated chronic inflammatory disorders. While none of the polymorphisms were associated with NERD or ERD, the 1142G/A variant of the IL23R gene was found to be a risk variant in Barrett's esophagus patients. The IL23/IL23R pathway may modulate STAT3 transcriptional activity which is an essential regulator not only of immune-mediated inflammation, but also of inflammatory-associated apoptosis resistance. Although the mechanisms of metaplastic transition of inflamed squamous epithelium are undetermined as yet, our findings suggest potential involvement of alternations in the IL23/IL23R pathway as a molecular background of Barrett's esophagus development.

Microarray Inspector: tissue cross contamination detection tool for microarray data

73%

Stępniak P., Maycock M., Wojdan K., Markowska M., Perun S., Srivastava A., Wyrwicz L., Świrski K.

2013

vol. 60

issue 4

647-655

Microarray technology changed the landscape of contemporary life sciences by providing vast amounts of expression data. Researchers are building up repositories of experiment results with various conditions and samples which serve the scientific community as a precious resource. Ensuring that the sample is of high quality is of utmost importance to this effort. The task is complicated by the fact that in many cases datasets lack information concerning pre-experimental quality assessment. Transcription profiling of tissue samples may be invalidated by an error caused by heterogeneity of the material. The risk of tissue cross contamination is especially high in oncological studies, where it is often difficult to extract the sample. Therefore, there is a need of developing a method detecting tissue contamination in a post-experimental phase. We propose Microarray Inspector: customizable, user-friendly software that enables easy detection of samples containing mixed tissue types. The advantage of the tool is that it uses raw expression data files and analyses each array independently. In addition, the system allows the user to adjust the criteria of the analysis to conform to individual needs and research requirements. The final output of the program contains comfortable to read reports about tissue contamination assessment with detailed information about the test parameters and results. Microarray Inspector provides a list of contaminant biomarkers needed in the analysis of adipose tissue contamination. Using real data (datasets from public repositories) and our tool, we confirmed high specificity of the software in detecting contamination. The results indicated the presence of adipose tissue admixture in a range from approximately 4% to 13% in several tested surgical samples.

Zasady stosowania dootrzewnowej chemioterapii w hipertermii (HIPEC) w leczeniu nowotworów złośliwych powierzchni otrzewnej w połączeniu z zabiegami cytoredukcyjnymi: zalecenia krajowe

59%

Rutkowski P., Śpiewankiewicz B., Herman K., Jastrzębski T., Kładny J., Kojs Z., Krzakowski M., Polkowski W., Wyrwicz L., Wysocki P., Zdzienicki M., Zegarski W.

Current Gynecologic Oncology

2014

vol. 12

issue 2

86-97

The management of peritoneal surface malignancy is a significant clinical problem in oncology. It was demonstrated that the combination of complete cytoreductive surgery with hyperthermic intraperitoneal chemotherapy (HIPEC) may lead to long-term control of the disease or improved survival in selected patients. The aim of this paper was to present the optimal indications and technical guidelines for performing HIPEC in Poland. The application of this method requires experience of a multidisciplinary team of physicians (gynecologic oncologist, surgeon and clinical oncologist), availability of diagnostic and therapeutic resources (intensive care unit) as well as a dedicated perfusion system. A crucial aspect for obtaining optimal treatment outcomes is the selection of patients. Such a selection takes place both at the beginning of treatment and intraoperatively. The initial selection of patients qualified for HIPEC includes ruling out extraperitoneal spread of cancer and metastases to the liver (single resectable liver metastases in patients with colorectal carcinoma are not contraindications) and lungs. According to current international guidelines, the HIPEC procedure is a standard treatment in patients with ovarian carcinoma that metastasizes to the peritoneum, in colorectal cancer, when PCI <20 and in patients with peritoneal mesothelioma or pseudomyxoma peritonei as well as in patients with gastric cancer.

Leczenie nowotworów złośliwych powierzchni otrzewnej stanowi istotny problem w onkologii. Wykazano, że skojarzenie maksymalnej cytoredukcji chirurgicznej z dootrzewnową chemioterapią w hipertermii (hyperthermic intraperitoneal chemotherapy, HIPEC) może prowadzić do długotrwałej kontroli choroby lub wydłużenia przeżyć u odpowiednio wybranych chorych. Celem niniejszego opracowania są zalecenia dla optymalnego zakresu wskazań i sposobu prowadzenia HIPEC w Polsce. Zastosowanie tej metody wymaga doświadczenia wielospecjalistycznego zespołu lekarskiego (ginekolog onkolog, chirurg, onkolog kliniczny), a także zaplecza diagnostycznego i leczniczego (oddziału intensywnej opieki medycznej) oraz dedykowanego systemu do perfuzji. Kluczową kwestią dla uzyskania optymalnego wyniku leczenia jest odpowiedni dobór chorych. Dobór ten następuje zarówno na etapie planowania leczenia, jak i śródoperacyjnie. Wstępna selekcja pacjentów kwalifikowanych do leczenia z wykorzystaniem HIPEC obejmuje wykluczenie pozaotrzewnowych przerzutów nowotworu oraz przerzutów do wątroby (pojedyncze resekcyjne przerzuty do wątroby u chorych na raka jelita grubego nie są przeciwwskazaniem) i płuc. Zgodnie z istniejącymi zaleceniami międzynarodowymi procedura HIPEC jest standardowo stosowana u chorych z przerzutami do otrzewnej raka jajnika, raka jelita grubego, gdy PCI <20 oraz u chorych na międzybłoniaka lub śluzaka rzekomego otrzewnej i wybranych chorych na raka żołądka.

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2 Acta Biochimica Polonica

1 Current Gynecologic Oncology

1 2014

1 2013

1 2008

3 Wyrwicz L.

1 Gaj P.

1 Herman K.

1 Jastrzębski T.

1 Kojs Z.

1 Krzakowski M.

1 Kładny J.

1 Markowska M.

1 Maycock M.

1 Mikula M.

1 Ostrowski J.

1 Perun S.

1 Polkowski W.

1 Regula J.

1 Rutkowski P.

1 Srivastava A.

1 Stępniak P.

1 Wojdan K.

1 Wysocki P.

1 Zdzienicki M.

1 Zegarski W.

1 Śpiewankiewicz B.

1 Świrski K.

Search results

Barrett's esophagus associates with a variant of IL23R gene

Microarray Inspector: tissue cross contamination detection tool for microarray data

Zasady stosowania dootrzewnowej chemioterapii w hipertermii (HIPEC) w leczeniu nowotworów złośliwych powierzchni otrzewnej w połączeniu z zabiegami cytoredukcyjnymi: zalecenia krajowe