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001-es BibID:	BIBFORM028554
Első szerző:	Ajuebor, Maureen N.
Cím:	Regulation of macrophage inflammatory protein-1 alpha expression and function by endogenous interleukin-10 in a model of acute inflammation / Maureen N. Ajuebor, Anuk M. Das, László Virág, Csaba Szabó, Mauro Perretti
Dátum:	1999
ISSN:	0006-291X
Megjegyzések:	In this study we have determined the role of endogenous interleukin (IL)-10 on leucocyte recruitment and production of the CC chemokine macrophage inflammatory protein-1alpha (MIP-1alpha) in a murine model of acute inflammation. Intraperitoneal injection of zymosan produced a dose-dependent cellular infiltration which was concomitant with MIP-1alpha release in the lavage fluids. Release of this chemokine had a functional role since treatment of mice with a specific anti-MIP-1alpha antibody reduced both neutrophil and monocyte accumulation into the peritoneal cavity. An unexpected increase in cell influx and MIP-1alpha production was measured following depletion of resident peritoneal macrophages, as achieved by a 3-day liposome treatment. A similar result was obtained when the zymosan peritonitis response was elicited in IL-10 knock-out mice. In summary we propose a functional cross talk between endogenous IL-10 and this CC chemokine during the host inflammatory response.
Tárgyszavak:	Orvostudományok Elméleti orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban egyetemen (Magyarországon) készült közlemény
Megjelenés:	Biochemical And Biophysical Research Communications 255 : 2 (1999), p. 279-282. -
További szerzők:	Das, Anuk M. Virág László (1965-) (biokémikus, sejtbiológus, farmakológus) Szabó Csaba (1967-) (orvos) Perretti, Mauro
Internet cím:	Intézményi repozitóriumban (DEA) tárolt változat DOI
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001-es BibID:	BIBFORM028423
Első szerző:	Ajuebor, Maureen N.
Cím:	Role of resident peritoneal macrophages and mast cells in chemokine production and neutrophil migration in acute inflammation : evidence for an inhibitory loop involving endogenous IL-10 / Maureen N. Ajuebor, Anuk M. Das, László Virág, Roderick J. Flower, Csaba Szabó, Mauro Perretti
Dátum:	1999
ISSN:	1550-6606
Megjegyzések:	The roles played by resident macrophages (Mphi) and mast cells (MCs) in polymorphonuclear leukocyte (PMN) accumulation and chemokine production within the mouse peritoneal cavity in response to administration of zymosan (0.2 and 1 mg), LPS (1 mg/kg), and thioglycolate (0.5 ml of a 3% suspension) were investigated. A marked reduction (>95%) in intact MC numbers was obtained by pretreatment with the MC activator compound 48/80, whereas resident Mphi were greatly diminished (>85%) by a 3-day treatment with liposomes encapsulating the cytotoxic drug dichloromethylene-bisphosphonate. No modulation of thioglycolate-induced inflammation was seen with either pretreatment. Removal of either MCs or Mphi attenuated LPS-induced PMN extravasation without affecting the levels of the chemokines murine monocyte chemoattractant protein-1 and KC measured in the lavage fluids. In contrast, MC depletion inhibited PMN accumulation and murine monocyte chemoattractant protein-1 and KC production in the zymosan peritonitis model. Removal of Mphi augmented the accumulation of PMN elicited by the latter stimulus. This was due to an inhibitory action of Mphi-derived IL-10 because there was 1) a time-dependent release of IL-10 in the zymosan exudates; 2) a reduction in IL-10 levels following Mphi, but not MC, depletion; and 3) an increased PMN influx and chemokine production in IL-10 knockout mice. In conclusion, we propose a stimulus-dependent role of resident MCs in chemokine production and the existence of a regulatory loop between endogenous IL-10 and the chemokine-mediated cellular component of acute inflammation.
Tárgyszavak:	Orvostudományok Elméleti orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban
Megjelenés:	Journal Of Immunology 162 : 3 (1999), p. 1685-1691. -
További szerzők:	Das, Anuk M. Virág László (1965-) (biokémikus, sejtbiológus, farmakológus) Flower, Roderick J. Szabó Csaba (1967-) (orvos) Perretti, Mauro
Internet cím:	Intézményi repozitóriumban (DEA) tárolt változat
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