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Wyszukujesz frazę "NK cells" wg kryterium: Temat


Wyświetlanie 1-3 z 3
Tytuł:
Chemerin and the recruitment of NK cells to diseased skin*
Autorzy:
Skrzeczyńska-Moncznik, Joanna
Stefańska, Anna
Zabel, Brian
Kapińska-Mrowiecka, Monika
Butcher, Eugene
Cichy, Joanna
Powiązania:
https://bibliotekanauki.pl/articles/1040596.pdf
Data publikacji:
2009
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
viral pathogens
NK cells
skin diseases
chemerin
Opis:
Natural killer (NK) cells play a major role in the initial control of many viral pathogens and in the rejection of tumors. Consistent with their roles as immune sentinels, NK cells are found in inflamed skin, including lichen planus, psoriasis and atopic dermatitis (AD) lesions. In oral lichen planus lesions, the recruitment as well as intradermal colocalization of NK cells and pDC (plasmacytoid dendritic cells) appear to be mediated by chemerin, a recently identified protein ligand for chemokine-like receptor 1 (CMKLR1), a chemoattractant receptor expressed by both cell types. Dendritic cells can regulate NK cell activity, and NK cells can regulate DC-mediated responses. Since chemerin was recently implicated in recruitment of pDC to psoriatic skin, in this work we determined whether chemerin facilitates interactions between NK and pDC in psoriatic plaques through controlling influx of NK cells to diseased skin. We demonstrate that circulating NK cells from normal donors as well as psoriasis and AD patients respond similarly in functional migration assays to chemerin. However, differences in the distribution of NK cells and pDC in skin lesions suggest that recruitment of both NK cells and pDC is unlikely to be controlled solely by chemerin.
Źródło:
Acta Biochimica Polonica; 2009, 56, 2; 355-360
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modulation of the growth of pulmonary tumour colonies in mice after single or fractionated low-level irradiations with X-rays
Autorzy:
Nowosielska, E. M.
Cheda, A.
Wrembel-Wargocka, J.
Janiak, M. K.
Powiązania:
https://bibliotekanauki.pl/articles/147682.pdf
Data publikacji:
2008
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
low-level X-rays
NK cells
macrophages
tumour colonies
anti-neoplastic activity
Opis:
A number of epidemiological and experimental data indicate that exposures to low doses of low-LET ionizing radiation may trigger the activity of natural anti-tumour immune mechanisms and inhibit tumour growth. Natural killer (NK) cells and activated macrophages play important roles in the anti-tumour defence of the host. In view of this, the aim of the present study was to correlate the tumour-inhibitory effect of low doses of X-rays with the activities of NK cells and macrophages. BALB/c mice were whole-body irradiated with single or fractionated doses of 0.1, 0.2, or 1.0 Gy X-rays and then intravenously injected with L1 sarcoma cells; 14 days later, tumour colonies on the lungs' surface were counted. Cytotoxic activities of NK cells and macrophages were estimated using the 51Cr-release and [3H]thymidineuptake assays, respectively. The anti-asialo GM1 antibody and carrageenan (CGN) were intraperitoneally injected to block the NK cell- and macrophage-mediated activities in vivo, respectively. Single and fractionated whole-body irradiation (WBI) of mice with 0.1 or 0.2 Gy X-rays led to reduction in the number of the pulmonary tumour colonies accompanied by the enhanced cytotoxic activities of both NK lymphocytes and macrophages. Treatment of mice with anti-asialo GM1 antibody or CGN abrogated the tumour-inhibitory effects of the low-level exposures to X-rays. The obtained data suggest that suppression of the development of pulmonary tumour colonies by single or fractionated irradiations of mice with the low doses of X-rays may result from stimulation of the natural anti-tumour defence reactions mediated by NK cells and/or cytotoxic macrophages.
Źródło:
Nukleonika; 2008, 53, suppl. 1; 9-15
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Low-level exposures to ionising radiation modulate the anti-tumour activity of murine NK cells
Autorzy:
Nowosielska, E.
Wrembel-Wargocka, J.
Cheda, A.
Lisiak, E.
Janiak, M.
Powiązania:
https://bibliotekanauki.pl/articles/147802.pdf
Data publikacji:
2005
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
low doses
X-rays
NK cells
cytotoxicity
anti-asialo GM1 antibody
FasL
Opis:
Experimental evidence from the recent years indicates that low-level irradiations with X- or gamma rays may inhibit development of both primary and secondary tumours and stimulate the activity of natural anti-tumour immune mechanisms. Natural killer (NK) cells play an important role in anti-tumour defence of the host. In the present investigation cytotoxic activity, production of interferon-ă, and expression of the Fas ligand (FasL) were estimated in the NK splenocytes collected from BALB/c mice whose whole body was pre-exposed to irradiation with 0.1, 0.2, or 1.0 Gy X-rays. The results indicate that cytotoxic activity of the irradiated NK cells was significantly stimulated compared to that of the NK effectors obtained from the sham-exposed mice. This effect was totally abrogated by injection of the anti-asialo GM1 antibody. In addition, compared to the control mice, NK cells obtained from the irradiated animals exhibited reduced surface expression of FasL. Collectively, the obtained results suggest that the inhibitory effect of the low-level irradiations with X-rays on the development of pulmonary tumour nodules may be directly associated with stimulation by such exposures of anti-neoplastic functions mediated by NK cells.
Źródło:
Nukleonika; 2005, 50,suppl.2; 21-24
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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