PAF-Receptor in inflammatory versus non inflammatory human epidermis, cell cultures and embryonal cells
Objective: PAF-R (platelet activating factor-receptor) has been found on human keratinocytes to bind PAF, a proinflammatory phospholipid. We aimed to study PAF-R in a range of dermal cell lines and in samples of normal and psoriatic human skin to learn about its further role in humans.Methods: PAF-R...
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| Hauptverfasser: | , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
June 2003
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| In: |
Inflammation research
Year: 2003, Jahrgang: 52, Heft: 7, Pages: 283-286 |
| ISSN: | 1420-908X |
| DOI: | 10.1007/s00011-003-1172-x |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1007/s00011-003-1172-x
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| Verfasserangaben: | C. Bayerl, H. Brandt, M. Niemczyk, K. Müller-Decker and N. Gretz |
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| 100 | 1 | |a Bayerl, Christiane |e VerfasserIn |0 (DE-588)1019104147 |0 (DE-627)690775083 |0 (DE-576)168366592 |4 aut | |
| 245 | 1 | 0 | |a PAF-Receptor in inflammatory versus non inflammatory human epidermis, cell cultures and embryonal cells |c C. Bayerl, H. Brandt, M. Niemczyk, K. Müller-Decker and N. Gretz |
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| 520 | |a Objective: PAF-R (platelet activating factor-receptor) has been found on human keratinocytes to bind PAF, a proinflammatory phospholipid. We aimed to study PAF-R in a range of dermal cell lines and in samples of normal and psoriatic human skin to learn about its further role in humans.Methods: PAF-R was labeled immunocytochemically, histochemically and additionally studied with western blotting in human keratinocytes, human fibroblasts, embryonal keratinocytes, tumor cell lines and samples of normal and psoriatic human skin.Results: Keratinocytes from adult and embryonal epidermis of the 20th week of pregnancy showed a low level of labeling for PAF-R, but 3 ± 0.05% of plantar keratinocytes from adults were positive as were 4.2 ± 0.05% of embryonal plantar keratinocytes from the 21st week of pregnancy. In fibroblasts from adult and embryonal epidermis the protein was expressed at low levels. Western blotting revealed PAF-R positive bands at 67 k.Da in normal human skin and psoriasis, in psoriasis additionally at 45 k.Da. A 68 k.Da band was found in the colon cancer line HT 29 (control), and HaCaT cells, in embryonal keratinocytes additionally at 116 k.Da.Conclusions: PAF-R seems not to be important for embryonal or adult fibroblasts. In embryonal keratinocytes it is turned on after the 21st pregnancy week in a few cells seen as a band of 67 k.Da and at 116 k.Da, the latter is not found in adult keratinocytes. An additional 45 k.Da band of PAF-R was found in psoriasis that might stand for a truncated receptor. In the epithelial tumor cell line HaCaT and the HT29 colon cancer cell line PAF-R characterizes the anti-apoptotic effect of this receptor propagating tumor proliferation. | ||
| 650 | 4 | |a Key words:PAF (platelet activating factor)-receptor - Keratinocytes - Fibroblasts - Immunohistochemistry - Western-blot | |
| 700 | 1 | |a Brandt, H. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Niemczyk, M. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Müller-Decker, Karin |e VerfasserIn |0 (DE-588)1084651351 |0 (DE-627)848630556 |0 (DE-576)169302431 |4 aut | |
| 700 | 1 | |a Gretz, Norbert |d 1954-2023 |e VerfasserIn |0 (DE-588)1020104589 |0 (DE-627)691105154 |0 (DE-576)359544843 |4 aut | |
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