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Wyszukujesz frazę "interleukin-2" wg kryterium: Temat


Wyświetlanie 1-6 z 6
Tytuł:
Levels of interleukin-2 in patients with colon cancer and diabetes type 2
Autorzy:
Bosek, Irina
Sulich, Agnieszka
Rabijewski, Michał
Kaleta, Beata
Kniotek, Monika
Miłek, Tomasz
Piątkiewicz, Paweł
Powiązania:
https://bibliotekanauki.pl/articles/972606.pdf
Data publikacji:
2016
Wydawca:
Instytut Medycyny Wsi
Tematy:
diabetes type 2
colon cancer
interleukin-2
Opis:
Introduction and objective: The risk of development colon cancer (CC) is increased significantly among patients with the type 2 diabetes (T2DM). A mechanism responsible for the higher prevalence of CC among diabetic patients may be associated with the immunity system. The aim of this study is to point out the differences in the immunity state in terms of interleukin 2 level among patients with T2DM suffering from CC, and patients without these diseases Material and Methods: 79 patients were included the tests, divided into 4 groups: Group 1–23 people with T2DM, Group 2–23 people with large intestine CC, Group 3–10 people with large CC and T2DM, and Group 4–23 people without T2DM or CC. Each patient had a colonoscopy and those with cancer were confirmed in a histopathological examination. Laboratory measurements included fasting glucose, insulin, C-peptide. The concentration of interleukin-2 in serum was determined with the immunoenzymatic (ELISA) method. Results: The results obtained showed that in patients with T2DM and CC the concentration of interleukin-2 was statistically higher than in the other groups.(4.21±1.61 pg/ml vs. Group 1 -1.64±0.44 pg/ml, Group 2–1.54±0.21 pg/ml, and Group 4–1.70±0.36 pg/ml; p<0.05). Insulin levels, C-peptide and HOMA-IR did not differ significantly between groups, but a tendency was observed to higher values of HOMA-IR and insulin levels in the groups with T2DM alone and T2DM with concomitant CC. Conclusions: The data show differences in the immunity state of patients with T2DM and CC, compared with people without those two diseases. Elevated level of interleukin 2 found in this group, after confirmation in other studies with more patients, could be used as a marker of an increased risk of CC in people with T2DM
Źródło:
Journal of Pre-Clinical and Clinical Research; 2016, 10, 1; 1-5
1898-2395
Pojawia się w:
Journal of Pre-Clinical and Clinical Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Compensatory effect of TNFα on low natural killer activity in the elderly.
Autorzy:
Myśliwska, Jolanta
Bryl, Ewa
Trzonkowski, Piotr
Myśliwski, Andrzej
Powiązania:
https://bibliotekanauki.pl/articles/1044353.pdf
Data publikacji:
2000
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
NK activity
interleukin 2
ageing
TNFα
Opis:
Regulatory effect of CD25, an activation antigen the α subunit of interleukin 2 receptor (IL2R) on the activity of natural killer (NK) cells was studied in fifty elderly (57-70 years old) and fifty young people (19-35 years old). Cytotoxic NK activity was assessed by 51Cr release assay, the levels of interleukin 2 (IL2) and tumour necrosis factors α (TNFα) were measured using bioassays and expression of CD16 and CD25 proteins by flow cytometry. Low NK activity in the elderly was associated with decline of full health, lowered serum concentration of IL2 and increased production of TNFα during NK reaction. Inhibition of TNFα activity by anti-TNF monoclonal antibody suppressed exclusively NK activity of low NK responders. Moreover, stimulation in vitro of blood mononuclear cells, with TNFα induced in the elderly low NK responders a significantly higher increase of the CD25 expression on the surface of NK cells as compared with that in the elderly high responders. Since the CD25 molecule constitutes a subunit of the high affinity receptor, binding IL2 to immunocompetent cells, its increased expression on NK cells of low NK responders would enable them to bind even low amounts of the endogenous IL2 available in this group of the elderly. Thus, an overproduction of TNFα seems to be a mechanism compensating, in the non-fully healthy elderly, for the decreased IL2 production, promoting efficient cytotoxic reaction.
Źródło:
Acta Biochimica Polonica; 2000, 47, 2; 301-311
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Calcium- and proton-dependent relocation of annexin A6 in Jurkat T cells stimulated for interleukin-2 secretion
Autorzy:
Podszywalow-Bartnicka, Paulina
Strzelecka-Kiliszek, Agnieszka
Bandorowicz-Pikula, Joanna
Pikula, Slawomir
Powiązania:
https://bibliotekanauki.pl/articles/1041071.pdf
Data publikacji:
2007
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
interleukin-2
ionomycin
calcium
annexin A6
Jurkat T cells
vesicular traffic
Opis:
Annexin A6 (AnxA6) is a Ca2+-dependent membrane-binding protein involved in vesicular traffic. The likely participation of AnxA6 in the response of lymphocytes to Ca2+ signals has not been investigated yet. The present study focuses on intracellular relocation of AnxA6 in human Jurkat T lymphoblasts upon stimulation followed by transient increase of intracellular [Ca2+] and exocytosis of interleukin-2 (IL-2). Stimulation of the cells under different experimental conditions (by lowering pH and/or by rising extracellular [Ca2+] in the presence of ionomycin) induced time-dependent transients of intracellular [Ca2+] and concomitant changes in AnxA6 intracellular localization and in IL-2 secretion, with only minor effects on cell viability and apoptosis. In resting conditions (in the presence of EGTA or with no ionophore) AnxA6 was localized uniformly in the cytosol, whereas it translocated to vesicular structures beneath the plasma membrane within 5 min following stimulation of Jurkat T cells and rise of intracellular [Ca2+] at pH 7.4. Lowering the extracellular pH value from 7.4 to 6.0 significantly enhanced this process. AnxA6 changed its location from the cytosol to the secretory granules and early endosomes which seem to represent membranous targets for annexin. In conclusion, AnxA6 is sensitive to variations in intracellular [Ca2+] upon stimulation of Jurkat T cells, as manifested by a switch in its intracellular localization from the cytosol to vesicular structures located in close proximity to the plasma membrane, suggestive of participation of AnxA6 in calcium- and proton-dependent secretion of cytokines by lymphocytes.
Źródło:
Acta Biochimica Polonica; 2007, 54, 2; 261-271
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Immunotherapy with interleukin-2: a study based on mathematical modeling
Autorzy:
Banerjee, S.
Powiązania:
https://bibliotekanauki.pl/articles/907902.pdf
Data publikacji:
2008
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
komórka
efektor
nowotwór
opóźnienie czasowe
interleukina
effector cells
tumor cells
interleukin-2
discrete time delay
Opis:
The role of interleukin-2 (IL-2) in tumor dynamics is illustrated through mathematical modeling, using delay differential equations with a discrete time delay (a modified version of the Kirshner-Panetta model). Theoretical analysis gives an expression for the discrete time delay and the length of the time delay to preserve stability. Numerical analysis shows that interleukin-2 alone can cause the tumor cell population to regress.
Źródło:
International Journal of Applied Mathematics and Computer Science; 2008, 18, 3; 389-398
1641-876X
2083-8492
Pojawia się w:
International Journal of Applied Mathematics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Expression of avian influenza haemagglutinin (H5) and chicken interleukin 2 (chIL-2) under control of the ptcB promoter in Lactococcus lactis
Autorzy:
Szatraj, Katarzyna
Szczepankowska, Agnieszka
Sączyńska, Violetta
Florys, Katarzyna
Gromadzka, Beata
Łepek, Krzysztof
Płucienniczak, Grażyna
Szewczyk, Bogusław
Zagórski-Ostoja, Włodzimierz
Bardowski, Jacek
Powiązania:
https://bibliotekanauki.pl/articles/1039270.pdf
Data publikacji:
2014
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
Lactococcus lactis
ptcB promoter
heterologous gene expression
avian influenza H5N1
H5 haemagglutinin
chicken interleukin-2
Opis:
Gram-positive and nonpathogenic lactic acid bacteria (LAB) are considered to be promising candidates for the development of new, safe systems of heterologous protein expression. Recombinant LAB has been shown to induce specific local and systemic immune response against selected pathogens, and could be a good alternative to classical attenuated carriers. The main goal of our study was to express the avian influenza haemagglutinin (H5) and chicken interleukin 2 (chIL-2) in Lactococcus lactis. Results of this study were anticipated to lead to construction of lactococcal strain(s) with potential vaccine properties against the avian influenza A (H5N1) virus. Expression of the cloned H5 gene, its His-tagged variant and chIL-2 gene, under the control of the ptcB gene promoter was attested by RT-PCR on transcriptional level and Western or dot blot analysis on translational level, demonstrating that system can be an attractive solution for production of heterologous proteins. The results of the preliminary animal trial conducted in mice are a promising step toward development of a vaccine against avian bird flu using Lactococcus lactis cells as antigen carriers.
Źródło:
Acta Biochimica Polonica; 2014, 61, 3; 609-614
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Changes in the cellular behaviour of human colonic cell line Caco-2 in response to butyrate treatment.
Autorzy:
Dzierżewicz, Zofia
Orchel, Arkadiusz
Węglarz, Ludmiła
Latocha, Małgorzata
Wilczok, Tomasz
Powiązania:
https://bibliotekanauki.pl/articles/1043829.pdf
Data publikacji:
2002
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
colonocytes
sodium butyrate
interleukin-8
apoptosis
differentiation
Caco-2 cells
Opis:
Gut-derived adenocarcinoma Caco-2 cells were treated with sodium butyrate (NaB) at physiologically relevant concentrations. We characterized its effects on proliferation, differentiation, apoptosis, adhesion to the solid support and interleukin-8 secretion. Differentiation was determined by brush border alkaline phosphatase activity. Apoptosis was assessed by acridine orange and Hoechst stains. Differentiation and apoptosis were analyzed in both adherent and floating cell populations. The transformed Caco-2 cells did not retain their malignant phenotype in the presence of NaB. They appeared to undergo a change in the phenotype induced by NaB, as indicated by reduced proliferation, enhanced differentiation, stimulation of apoptosis leading to decreased viability of cells, and stimulation of interleukin-8 secretion. Considering all the above facts and data, we postulate that Caco-2 cells cultured in NaB supplemented medium could regain the phenotypic characteristics of the phenotype of the parent cell from which originated the Caco-2 line.
Źródło:
Acta Biochimica Polonica; 2002, 49, 1; 211-220
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-6 z 6

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