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    Wyświetlanie 1-14 z 14
    Tytuł:
    Interleukin 18 (IL-18) as a target for immune intervention
    Autorzy:
    Wawrocki, Sebastian
    Druszczynska, Magdalena
    Kowalewicz-Kulbat, Magdalena
    Rudnicka, Wieslawa
    Powiązania:
    https://bibliotekanauki.pl/articles/1038841.pdf
    Data publikacji:
    2016
    Wydawca:
    Polskie Towarzystwo Biochemiczne
    Tematy:
    interleukin-18 (IL-18)
    IL-18 receptor
    IL-18 binding protein
    Opis:
    Interleukin 18 (IL-18) is a pleiotropic cytokine involved in the regulation of innate and acquired immune response. In the milieu of IL-12 or IL-15, IL-18 is a potent inducer of IFN-gamma in natural killer (NK) cells and CD4 T helper (Th) 1 lymphocytes. However, IL-18 also modulates Th2 and Th17 cell responses, as well as the activity of CD8 cytotoxic cells and neutrophils, in a host microenvironment-dependent manner. It is produced by various hematopoietic and nonhematopoietic cells, including dendritic cells and macrophages. In an organism, bioactivity of the cytokine depends on the intensity of IL-18 production, the level of its natural inhibitory protein - IL-18BP (IL-18 binding protein) and the surface expression of IL-18 receptors (IL-18R) on the responding cells. This review summarizes the biology of the IL-18/IL-18BP/IL-18R system and its role in the host defense against infections. The prospects for IL-18 application in immunotherapeutic or prophylactic interventions in infectious and non-infectious diseases are discussed.
    Źródło:
    Acta Biochimica Polonica; 2016, 63, 1; 59-63
    0001-527X
    Pojawia się w:
    Acta Biochimica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    TGF-β1, IL-10 and IL-4 in colostrum of allergic and nonallergic mothers
    Autorzy:
    Marek, Andrzej
    Zagierski, Maciej
    Liberek, Anna
    Aleksandrowicz, Ewa
    Korzon, Michał
    Krzykowski, Grzegorz
    Kamińska, Barbara
    Szlagatys-Sidorkiewicz, Agnieszka
    Powiązania:
    https://bibliotekanauki.pl/articles/1040529.pdf
    Data publikacji:
    2009
    Wydawca:
    Polskie Towarzystwo Biochemiczne
    Tematy:
    IL-10
    allergy
    IL-4
    human milk
    TGF-β1
    Opis:
    Objective: To determine transforming growth factor (TGF) β1, interleukin (IL) 4, and IL-10 concentrations in human milk and to assess the relationship between allergic disorders in mothers and the content of the interleukins in their milk. Material and methods: Thirty allergic and 46 healthy mothers were included in the study. Colostrum was collected 2-3 days after delivery. Cytokine concentrations were determined with commercial enzyme-linked immunosorbent systems. Results: TGF-β1was found in milk from 23 women in the control group (53.49%) and 11 in the allergy group (37.93%). When TGF-β1 was present, the median concentration was higher in the allergy group than in the control (61.5 and 30.4 pg/mL, respectively; P < 0.004). IL-10 was present in the colostrum of all the women and the median IL-10 concentration did not differ between the allergy (50.5 pg/mL) and control (51.5 pg/mL) groups. The probability of occurrence of a positive IL-4 value in the allergy group was greater than in the control group (chi-squared [df=1] = 2.60, P < 0.053). Median IL-4 level did not differ significantly between the two groups (0.5 and 0.5 pg/mL respectively). Conclusions: TGF-β1 was detected less often in the colostrum of allergic mothers than in that of mothers without allergy (but the difference was not statistically significant). IL-4 was found more often in the colostrum of allergic mothers than nonallergic ones. The allergy status did not correlate with IL-10 concentration.
    Źródło:
    Acta Biochimica Polonica; 2009, 56, 3; 411-414
    0001-527X
    Pojawia się w:
    Acta Biochimica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ezetimibe prevents myocardial remodeling in an obese rat model by inhibiting inflammation
    Autorzy:
    Li, Xiao-Xing
    Zhao, Lang
    Chang, Ying
    Liu, Bao-Shan
    Xu, Feng
    Zhang, Cheng
    Ji, Xiao-Ping
    Chen, Yu-Guo
    Li, Chuan-Bao
    Powiązania:
    https://bibliotekanauki.pl/articles/1038380.pdf
    Data publikacji:
    2018
    Wydawca:
    Polskie Towarzystwo Biochemiczne
    Tematy:
    obese
    inflammation
    remodeling
    ezetimibe
    IL-6
    Opis:
    Inflammation plays an important role in the development of many obesity-related diseases. This study aimed to investigate the effect of ezetimibe on inflammation and myocardial remodeling in obese rats. A rat model of obesity was established, and myocardial damage was examined by transmission electron microscopy and Masson staining. Twenty obese rats were divided into two groups (n=10): obese group and ezetimibe group. Ten SD rats were used as controls. Western blot was performed to monitor the expression of P-p38MAPK and interleukin (IL)-6. Immunohistochemical staining was used to monitor the expression of intercellular adhesion molecule-1 and vascular cell adhesion molecule-1. In the obese rats group, we observed increased inflammatory factors and myocardial hypertrophy. In contrast, the ezetimibe group exhibited decreased expression of inflammatory factors and an improvement in myocardial remodeling compared to the obese group. Mechanistically, we found that ezetimibe decreased P-p38MAPK, IL-6, intercellular adhesion molecule-1, and vascular cell adhesion molecule-1 levels in the hearts of the obese rats. Taken together, these results indicate that ezetimibe may improve myocardial remodeling in obese rats by inhibiting inflammation.
    Źródło:
    Acta Biochimica Polonica; 2018, 65, 3; 465-470
    0001-527X
    Pojawia się w:
    Acta Biochimica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Combined delivery of an antiangiogenic protein (angiostatin) and an immunomodulatory gene (interleukin-12) in the treatment of murine cancer.
    Autorzy:
    Wilczyńska, Urszula
    Kucharska, Anna
    Szary, Jarosław
    Szala, Stanisław
    Powiązania:
    https://bibliotekanauki.pl/articles/1044050.pdf
    Data publikacji:
    2001
    Wydawca:
    Polskie Towarzystwo Biochemiczne
    Tematy:
    angiogenesis
    IL-12 gene
    tumor gene therapy
    angiostatin
    Opis:
    We investigated the feasibility of a novel therapeutic approach to treat neoplastic diseases in mice. This novel strategy consists in delivering a protein (angiostatin) with strong antiangiogenic properties, followed by administration of the interleukin 12 gene that is strongly immunomodulatory and has also some antiangiogenic effects. When angiostatin-mediated antiangiogenic therapy was used in combination with intratumor delivery of the IL-12 gene (a strategy much safer than IL-12 protein administration), this produced a synergistic therapeutic effect.
    Źródło:
    Acta Biochimica Polonica; 2001, 48, 4; 1077-1084
    0001-527X
    Pojawia się w:
    Acta Biochimica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Direct transfer of IL-12 gene into growing Renca tumors.
    Autorzy:
    Budryk, Magdalena
    Wilczyńska, Urszula
    Szary, Jarosław
    Szala, Stanisław
    Powiązania:
    https://bibliotekanauki.pl/articles/1044365.pdf
    Data publikacji:
    2000
    Wydawca:
    Polskie Towarzystwo Biochemiczne
    Tematy:
    IL-12 gene
    tumor gene therapy
    naked DNA
    Opis:
    We investigated the feasibility of transferring naked plasmid DNA containing a therapeutic gene (IL-12) into mice harboring growing Renca tumors. We found that naked DNA transferred into growing Renca and B16(F10) tumors gives higher expression level of reporter gene than complexes of DNA with DDAB/ DOPE or DC-Chol/DOPE. Transfer of naked DNA carrying the IL-12 gene into growing Renca tumors causes a distinct therapeutic effect that depends on the time span between inoculation of mice with cancer cells and the beginning of the therapy. Therapy started on day 3 resulted in total cure (100%) of mice.
    Źródło:
    Acta Biochimica Polonica; 2000, 47, 2; 385-391
    0001-527X
    Pojawia się w:
    Acta Biochimica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Peripheral regulatory T cells and anti-inflammatory cytokines in children with juvenile idiopathic arthritis
    Autorzy:
    Sznurkowska, Katarzyna
    Boćkowska, Małgorzata
    Zieliński, Maciej
    Plata-Nazar, Katarzyna
    Trzonkowski, Piotr
    Liberek, Anna
    Kamińska, Barbara
    Szlagatys-Sidorkiewicz, Agnieszka
    Powiązania:
    https://bibliotekanauki.pl/articles/1038532.pdf
    Data publikacji:
    2018
    Wydawca:
    Polskie Towarzystwo Biochemiczne
    Tematy:
    Tregs
    IL-10
    TGF-β1
    juvenile idiopathic arthritis
    Opis:
    Background: Juvenile idiopathic arthritis (JIA) is a chronic, heterogenous inflammatory disease of unclear pathogenesis. JIA is hypothesized to be linked to a defective immune regulation. Anti-inflammatory cytokines belong to the best known regulatory factors. T-regulatory cells are a crucial cellular component of immune tolerance. One of their functions is synthesis of interleukin 10 (IL-10) and transforming growth factor beta1 (TGF-β1). The aim of this study was to determine the proportion of T-regulatory cells (CD4+CD25highFOXP3+) in peripheral blood, and serum levels of TGF-β1 and IL-10 in patients with JIA. Methods: The study included 25 patients with newly diagnosed JIA: oligoarthritis (n=17) and polyarthritis (n=8). The control group was comprised of 17 healthy children. CD4+CD25highFOXP3+ T cells in peripheral blood were quantified by means of three-color flow cytometry. Serum concentrations of TGF-β1 and IL-10 were estimated with ELISA. Results: The proportion of peripheral CD4+CD25highFOXP3+ cells in patients with JIA was significantly higher than in the controls (p=0.04). The two groups did not differ significantly in terms of their TGF-β1 and IL-10 concentrations. Conclusions: At the time of diagnosis, children with JIA presented with an elevated proportion of T-regulatory cells (CD4+CD25highFOXP3+) in peripheral blood. Anti-inflammatory cytokines, IL-10 and TGF-β1, are not upregulated in the serum of patients with JIA, and therefore should not be considered as biomarkers of this condition.
    Źródło:
    Acta Biochimica Polonica; 2018, 65, 1; 119-123
    0001-527X
    Pojawia się w:
    Acta Biochimica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Barretts esophagus associates with a variant of IL23R gene
    Autorzy:
    Gaj, Pawel
    Mikula, Michal
    Wyrwicz, Lucjan
    Regula, Jaroslaw
    Ostrowski, Jerzy
    Powiązania:
    https://bibliotekanauki.pl/articles/1040756.pdf
    Data publikacji:
    2008
    Wydawca:
    Polskie Towarzystwo Biochemiczne
    Tematy:
    Barrett's esophagus
    risk
    SNP
    IL23R
    association study
    Opis:
    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.
    Źródło:
    Acta Biochimica Polonica; 2008, 55, 2; 365-369
    0001-527X
    Pojawia się w:
    Acta Biochimica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Sustained virologic response and IL28B single-nucleotide polymorphisms in patients with chronic hepatitis C treated with pegylated interferon alfa and ribavirin
    Autorzy:
    Jabłonowska, Elżbieta
    Piekarska, Anna
    Koślińska-Berkan, Ewa
    Omulecka, Aleksandra
    Szymańska, Bożena
    Wójcik, Kamila
    Powiązania:
    https://bibliotekanauki.pl/articles/1039705.pdf
    Data publikacji:
    2012
    Wydawca:
    Polskie Towarzystwo Biochemiczne
    Tematy:
    ribavirin
    interferon
    HCV
    IL28B
    HIV
    sustained virologic response
    Opis:
    Introduction. Hepatitis C virus (HCV) infection is a global health problem which can lead to liver cirrhosis or hepatocellular carcinoma in one-fifth of chronically infected patients. Materials and methods. The study group consisted of 123 patients: 90 with HCV mono- and 33 with HIV/HCV co-infection, who were treated with pegylated interferon alfa (Peg-IFN-α) and ribavirin. We analyzed selected pretreatment factors: age, sex, HIV/HCV co-infection, grade of inflammation, necrotic changes and fibrosis in histological analysis of liver bioptates, HCV viral load, HCV genotypes, and single nucleotide polymorphisms (SNPs) of IL28B and tried to find out which of them influence sustained virological response (SVR). The IL28B SNP C/T (rs12979860) was analyzed using Custom® SNP Genotyping Assays (Applied Biosystems). Results. Multivariate analysis demonstrated that after adjusting for the other variables three predictors independently influence SVR, namely genotype 3 of HCV, presence of the CC genotype and age >40 years (OR respectively 15.14, 3.62, and 0.36). HCV mono-infected patients were infected with HCV genotype 3 or 4 less frequently (p=0.0001) compared to HIV/HCV co-infected individuals. In patients with HIV/HCV co-infection the CC variant occurred more frequently whereas CT was found less frequently (p=0.001, p=0.0146, respectively). In patients with HIV/HCV co-infection, 3 and 4 genotype of HCV occurred more frequently compared to patients with HCV mono-infection (p=0.0001). Conclusions. These data suggest that age, HCV genotype and IL28B polymorphism are useful for prediction of the response to treatment with Peg-IFN-α and ribavirin. The more frequent occurrence of HCV genotypes 3 or 4 in patients with HIV/HCV co-infection could be associated with the route of transmission.
    Źródło:
    Acta Biochimica Polonica; 2012, 59, 3; 333-337
    0001-527X
    Pojawia się w:
    Acta Biochimica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Vitamin D status in patients with rheumatoid arthritis: a correlation analysis with disease activity and progression, as well as serum IL-6 levels
    Autorzy:
    Polasik, Kinga
    Piotrowska, Ewa
    Lipińska, Barbara
    Witkowski, Jacek
    Bryl, Ewa
    Tukaj, Stefan
    Powiązania:
    https://bibliotekanauki.pl/articles/1038556.pdf
    Data publikacji:
    2017
    Wydawca:
    Polskie Towarzystwo Biochemiczne
    Tematy:
    rheumatoid arthritis
    vitamin D deficiency
    25(OH)D
    IL-6
    Opis:
    Objectives. Recent epidemiological studies suggested an association between a poor vitamin D [25(OH)D] status, inflammatory mediators, and rheumatoid arthritis (RA). We have recently proposed that pro-inflammatory interleukin 6 (IL-6) may represent a good marker for disease activity of RA. The aim of this study was to investigate the relationship between serum 25(OH)D levels and disease activity, joint damage, as well as serum IL-6 levels in a Polish RA population. Materials and Methods. Serum 25(OH)D levels were measured in 35 female RA patients and 38 age- and gender-matched healthy controls. Statistical correlations between 25(OH)D levels and the disease activity score 28 (DAS 28), joint damage based on the Steinbrocker criteria, as well as serum IL-6 levels were performed. Results. There was no statistically significant difference between levels of 25(OH)D in RA (16.89±8.57 ng/ml) and healthy controls (14.12±7.51 ng/ml), and the vitamin D deficiency (<20 ng/ml) was found in 71.43% of RA patients and 73.68 % of healthy controls. While vitamin D status did not correlate with DAS 28 (r=0.265, p=0.149) and joint damage based on the Steinbrocker criteria (r=0.367, p=0.065), a positive correlation between 25(OH)D and IL-6 (r=0.537, p=0.002) was observed in RA. Conclusion. Although further studies on a larger group of patients will be needed to confirm the data presented here, it seems that hypovitaminosis D is common in the RA patients and middle-aged non-RA healthy women in the Polish population. 25(OH)D levels were similar in the RA patients and age- and gender-matched healthy controls, and were not associated with joint damage and disease activity in patients.
    Źródło:
    Acta Biochimica Polonica; 2017, 64, 4; 667-670
    0001-527X
    Pojawia się w:
    Acta Biochimica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The relation between glutathione S-Transferase M1 null-genotype and cardiac problems in beta-thalassemia
    Autorzy:
    Abo-Shanab, Asem
    El-Desouky, Mohamed
    Kholoussi, Naglaa
    El-Kamah, Ghada
    Helwa, Iman
    Powiązania:
    https://bibliotekanauki.pl/articles/1038809.pdf
    Data publikacji:
    2016
    Wydawca:
    Polskie Towarzystwo Biochemiczne
    Tematy:
    GSTM1
    β-thalathemia
    Cardiac complications
    hs-CRP
    IL-6
    Opis:
    This work was carried out to investigate the role of Glutathione S-Transferase M1 (GSTM1) null genotype frequency in prognosis of β-thalassemia, and to detect the correlation between GSTM1 null genotype and appearance of cardiac complications in β-thalassemia. Materials and Methods. The studied groups in the present work were divided to three groups (group I: 20 healthy subjects, group II: 56 β-thalassemic patients and group III: 16 β-thalassemic patients with cardiac complications were taken from group II). The measurement of human high sensitive C-reactive protein (hs-CRP) was performed using nephelometry. GSTM1 genotype was detected by Polymerase Chain Reaction (PCR) and cardiac complications were determined by using Echocardiography. Results. A statistically significant increase in hs-CRP and interleukin-6 (IL-6) levels was found in β-thalassemic patients with cardiac complications compared to normal subjects. Results showed no relation between GSTM1 null genotype frequency neither with β-thalassemia nor with cardiac complications appearance, where the interaction between GSTM1 null genotype in β-thalassemic patients with cardiac complications and healthy subjects were insignificant compared to subjects with GSTM1 non-null genotype. Conclusions. GSTM1 null genotype frequency has no role in β-thalassemia or cardiac complications appearance.
    Źródło:
    Acta Biochimica Polonica; 2016, 63, 2; 267-271
    0001-527X
    Pojawia się w:
    Acta Biochimica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Limited GADD45α expression and function in IL-1β toxicity towards insulin-producing cells
    Autorzy:
    Skalniak, Lukasz
    Gurgul-Convey, Ewa
    Okreglicka, Katarzyna
    Skalniak, Anna
    Jura, Jolanta
    Powiązania:
    https://bibliotekanauki.pl/articles/1039450.pdf
    Data publikacji:
    2013
    Wydawca:
    Polskie Towarzystwo Biochemiczne
    Tematy:
    GADD45
    IL-1β
    insulin-producing cells
    type 1 diabetes
    Opis:
    Growth arrest and DNA damage-inducible (GADD) 45 proteins are regulators of cell death and survival. The proinflammatory cytokine IL-1β strongly increases the level of the transcript encoding GADD45α in rat insulin-producing INS-1E cells. The activation of Gadd45α gene is clearly dependent on JNK and NF-κB activation and the synthesis of the secondary mediator nitric oxide (NO). Interestingly, the observed twelve-fold increase in the GADD45α-coding transcript level is not followed by increased expression of GADD45α at the protein level. An analysis of IL-1β toxicity in INS-1E cells overexpressing GADD45α revealed no correlation between the GADD45α protein level and the sensitivity to IL-1β toxicity. These findings suggest that the potential engagement of GADD45α in IL-1β toxicity towards beta cells is limited to the effects induced by the basal expression level of this protein.
    Źródło:
    Acta Biochimica Polonica; 2013, 60, 4; 595-602
    0001-527X
    Pojawia się w:
    Acta Biochimica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The balance between pro- and anti-inflammatory cytokines in the immune responses to BCG and DTwP vaccines
    Autorzy:
    Druszczynska, Magdalena
    Kowalewicz-Kulbat, Magdalena
    Maszewska, Agnieszka
    Rudnicka, Karolina
    Szpakowski, Piotr
    Wawrocki, Sebastian
    Wlodarczyk, Marcin
    Rudnicka, Wiesława
    Powiązania:
    https://bibliotekanauki.pl/articles/1038943.pdf
    Data publikacji:
    2015
    Wydawca:
    Polskie Towarzystwo Biochemiczne
    Tematy:
    BCG
    pertussis
    IFN-gamma
    IL-10
    tuberculin skin test
    dendritic cells
    Opis:
    Bacillus Calmette-Guérin (BCG) and pertussis vaccines have been found to be insufficient and their further improvement is required. In order to develop improved vaccines, a better understanding of the main pathways involved in the host's protective immunity to the pathogens is crucial. We address the question as to whether the balance between pro- and anti-inflammatory cytokine production might affect the host responses to BCG and diphtheria-tetanus toxoids-whole cell pertussis (DTwP) vaccines. The study population consisted of 118 healthy people, age range 18-30 years, who had been subjected to BCG and DTwP vaccination according to the state policy. Tuberculin skin testing (TST) revealed a delayed type hypersensitivity (DTH) to PPD (purified protein derivative) in 53% volunteers. The variability in development of the BCG-driven DTH to tuberculin prompted us to address a question as to whether Th1/Th2 polarization is involved in the lack of skin responsiveness to PPD. PPD-stimulated blood lymphocytes from TST+ participants produced significantly more IFN-γ and less IL-10 than lymphocytes from TST- volunteers. However, TST- volunteers' sera contained more anti-pertussis IgG but not anti-diphtheria toxin IgG. Mycobacterial antigens and particularly PPD induced a higher expression of HLA-DR and co-stimulatory CD80 receptors on DCs from TST+ than TST- participants. BCG but not PPD pulsed DCs from TST- volunteers produced significantly more IL-10. Mycobacterial antigen stimulated DCs from TST+ volunteers induced a more intense IFN-γ production in co-cultures with autologous lymphocytes than the cells from TST- participants. Differences among the types of dendritic cell activities contribute to development of tuberculin reactivity in BCG vaccinated volunteers.
    Źródło:
    Acta Biochimica Polonica; 2015, 62, 4; 913-921
    0001-527X
    Pojawia się w:
    Acta Biochimica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Antitumoral effect of IL-12 gene transfected via liposomes into B16F0 cells
    Autorzy:
    Speroni, Lucía
    Gasparri, Julieta
    de los A. Bustuoabad, Victoria
    Chiaramoni, Nadia
    Smagur, Andrzej
    Szala, Stanisław
    Taira, María
    del V. Alonso, Silvia
    Powiązania:
    https://bibliotekanauki.pl/articles/1040572.pdf
    Data publikacji:
    2009
    Wydawca:
    Polskie Towarzystwo Biochemiczne
    Tematy:
    stearylamine
    liposomes
    B16F0 cells
    B16 melanoma
    IL-12
    Opis:
    Murine melanoma B16F0 cells were transfected with SA:DPPC:DOPE (2:1:1 molar ratio) liposomes associated with a plasmid encoding murine IL-12. Stearylamine, a cationic lipid, showed a greater transfection efficiency compared to DOTAP-containing liposomes. The lipid:DNA ratio was 2:1 (w/w). Control groups were mock transfected or transfected with an empty plasmid (pNeo). pNeo or IL-12 transfected cells and controls were inoculated intradermically into the dorsal region of the foot or the lateral flank of C57BL6 mice. Results showed that IL-12 expression had a marked effect on in vivo growth of B16 melanoma tumors developed in both anatomic sites, significantly retarding their growth and prolonging host survival.
    Źródło:
    Acta Biochimica Polonica; 2009, 56, 2; 249-253
    0001-527X
    Pojawia się w:
    Acta Biochimica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Regulatory effects of 1,25-dihydroxyvitamin D3 on vascular smooth muscle cells
    Autorzy:
    Tukaj, Stefan
    Trzonkowski, Piotr
    Tukaj, Cecylia
    Powiązania:
    https://bibliotekanauki.pl/articles/1039718.pdf
    Data publikacji:
    2012
    Wydawca:
    Polskie Towarzystwo Biochemiczne
    Tematy:
    IκB-α
    TNF-α
    calcitriol
    HSP70
    NF-κB
    IL-6
    vitamin D
    VSMC
    Opis:
    Inflammatory response has been recognized as a central feature in the development and progression of atherosclerosis, and VSMCs (Vascular Smooth Muscle Cells) - the main cellular component of media, play an important role in this process. Many reports indicate that the biologically active vitamin D metabolite - 1,25-dihydroxyvitamin D3 (1,25(OH)2D3 = calcitriol), besides its well established role in calcium homeostasis, plays an essential role in the regulation of the inflammation process. The aim of this study was to determine the regulatory effects of calcitriol, applied at two supra-physiological doses (10 nM and 100 nM), in VSMC culture. Secretion of the pro-inflammatory cytokines, IL-6 and TNF-α, was significantly attenuated in calcitriol-treated VSMC culture, but the level of anti-inflammatory TGF-β was generally unchanged. Since in advanced atherosclerosis lesions several cell types, including VSMCs, overproduce the HSP70 chaperone protein, we also checked the effects of calcitriol on its synthesis. The presence of 1,25(OH)2D3 did not affect HSP70 synthesis under physiological conditions but the synthesis of HSP70 in VSMCs exposed to heat shock was significantly inhibited by calcitriol (=100 nM). We observed that 1,25(OH)2D3 induced SOD 1 activity, stimulated the expression of IκB-α, and did not influence the level of NF-κB-p65 in VSMCs. The results of our study suggest that 1,25(OH)2D3 may serve as a natural anti-inflammatory agent and may therefore play a beneficial role in the physiology of VSMC in some contexts of atherosclerosis.
    Źródło:
    Acta Biochimica Polonica; 2012, 59, 3; 395-400
    0001-527X
    Pojawia się w:
    Acta Biochimica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-14 z 14

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