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001-es BibID:	BIBFORM038646
035-os BibID:	PMID:23109053
Első szerző:	Gyimesi Edit (klinikai biokémikus, vegyész)
Cím:	The effects of various doses of bacterial lipopolysaccharide on the expression of CD63 and the release of histamine by basophils of atopic and non-atopic patients / E. Gyimesi, F. Gönczi, M. Szilasi, G. Pál, S. Baráth, S. Sipka
Dátum:	2013
ISSN:	1023-3830
Megjegyzések:	AbstractObjective We tested the effect of various doses of bacterial lipolysaccharide (LPS, endotoxin) on the expression of CD63 and the in vitro release of histamine by basophils stimulated with ragweed allergen in patients with or without ragweed and mite allergies. Methods The peripheral blood of 11 patients with ragweed allergy, 10 patients with mite allergy and 14 control patients was incubated with ragweed allergen extract following pretreatment with varying doses of LPS. The expression of CD63 in basophils was measured by flow cytometry, and the release of histamine was determined by ELISA. Results In the samples of patients with ragweed allergy that were exposed to specific allergen, only high doses of LPS significantly elevated the expression of CD63 (200 ng/ml; 1000 EU/ml) and the release of histamine (2000 ng/ml; 10000 EU/ml). There was no effect of LPS in any other cases. Conclusions Bacterial LPS (endotoxin) concentrations higher than 200 ng/ml (1000 EU/ml), which rarely occurs in nature, could only activate the basophils from atopic patients while in the presence of the specific allergen. Thus, the restoration of the urban, "microbe-poor" milieu with endotoxin (as LPS) can be a promising and harmless approach for allergy prevention.
Tárgyszavak:	Orvostudományok Klinikai orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban lipopolysaccharide CD63 atopic histamine egyetemen (Magyarországon) készült közlemény
Megjelenés:	Inflammation Research. - 62 : 2 (2013), p. 213-218. -
További szerzők:	Gönczi Ferenc Szilasi Mária (1953-) (tüdőgyógyász, klinikai immunológus, allergológus, belgyógyász) Pál G. Baráth Sándor (1977-) (biológus) Sipka Sándor (1945-) (laboratóriumi szakorvos)
Internet cím:	DOI Intézményi repozitóriumban (DEA) tárolt változat
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001-es BibID:	BIBFORM041487
035-os BibID:	PMID:18224288
Első szerző:	Sipka Sándor (laboratóriumi szakorvos)
Cím:	Adenosine inhibits the release of arachidonic acid and its metabolites (AAM) in activated human peripheral mononuclear cells / S. Sipka, I. Kovács, S. Szántó, Gy. Szegedi, L. Brugós, G. Bruckner, A. J. Szentmiklósi
Dátum:	2007
ISSN:	1023-3830
Megjegyzések:	The effects of adenosine (Ado) and subtype-specific activators of adenosine receptors (A(1), A(2A), A(2B) and A(3)) were studied on the release of arachidonic acid (AA) and its metabolites (AAM) from human peripheral mononuclear cells (monocytes). MATERIALS AND METHOD: Adenosine and the selective agonists and antagonists of adenosine receptors were used. (3)H-AA and its metabolites released into the medium were determined by measurement of the total (3)H radioactivity released without separating the AAM. RESULTS: In the cells activated by protein kinase C specific phorbol ester (phorbol 12-myristate 13-acetate) and Ca(2+) ionophore (A23187), adenosine and two subtype-specific receptor agonists, CPA(A(1)) and CGS 21680 (A(2A)) induced concentration-dependent inhibition of the release of AAM, whereas stimulation of A(2B) or A(3) receptors was ineffective. The rank order of potency for the inhibition of AAM release was as follows: CGS 21680 = CPA > adenosine > NECA (in the presence of ZM 24185 and DPCPX as A(2A) and A(1) adenosine receptor antagonists, respectively) = IB-MECA. Adenosine inhibited the release of AAM only at and above the concentration of 100 muM, whereas the inhibitory effect of A(1) and A(2A) receptor specific agonists appeared at a concentration of 10(-7) M. CONCLUSIONS: It can be concluded that adenosine physiologically may not have a significant effect on the AAM release of circulating monocytes, but in pathological conditions, where the local Ado concentrations increases, this nucleoside, through activation of A(2A) and A(1) receptors can exert, at least in part, an antiinflammatory action by decreasing proinflammatory AAM production.
Tárgyszavak:	Orvostudományok Klinikai orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban adenosine arachidonic acid Adenosine/pharmacology Arachidonic Acid/metabolism Calcimycin/pharmacology Calcium/metabolism Cyclic AMP/metabolism Humans Ionophores/pharmacology Monocytes/drug effects/metabolism Protein Kinase C/metabolism Purinergic P1 Receptor Agonists Purinergic P1 Receptor Antagonists Tetradecanoylphorbol Acetate/pharmacology egyetemen (Magyarországon) készült közlemény
Megjelenés:	Inflammation Research 56 : 11 (2007), p. 468-472. -
További szerzők:	Kovács I. (orvos) Szántó Sándor (1968-) (belgyógyász, reumatológus) Szegedi Gyula (1936-2013) (belgyógyász, immunológus) Brugós László (1951-) (tüdőgyógyász, klinikai immunológus, allergológus) Bruckner Géza Szentmiklósi József András (1948-) (farmakológus, klinikai laboratóriumi szakorvos)
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
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