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001-es BibID:BIBFORM016305
Első szerző:Maródi László (gyermekgyógyász infektológus, immunológus)
Cím:Survival of Group B Streptococcus Type III in Mononuclear Phagocytes : differential Regulation of Bacterial Killing in Cord Macrophages by Human Recombinant Gamma Interferon and Granulocyte-Macrophage Colony-Stimulating Factor / Maródi László, Káposzta Rita, Nemes Éva
Dátum:2000
Megjegyzések:Phagocytic and killing capacities of resident and cytokine-activated human macrophages against group B Streptococcus (GBS) type III were studied. Evidence is presented that monocyte-derived macrophages from cord and adults ingest serum-opsonized GBS but that killing of bacteria was negligible in resident cells. Treatment of adult macrophages with recombinant human gamma interferon (rhIFN-gamma; 100 U/ml) or recombinant human granulocyte-macrophage colony-stimulating factor (rhGM-CSF; 200 U/ml) resulted in significant increases of killing of GBS (P < 0.01 for each). The killing capacity of cord macrophages treated with rhGM-CSF was also enhanced compared to that of untreated cells (P < 0.01). However, treatment with rhIFN-gamma resulted in only a moderate increase in the capacity of cord macrophages to kill GBS (P > 0.1). These results mirrored the effect of rhIFN-gamma on candidacidal capacities of cord and adult macrophages, reported earlier from our laboratory. These data indicate differential modulation of neonatal macrophages by rhGM-CSF and rhIFN-gamma. We suggest that administration of rhGM-CSF to neonates with invasive GBS disease may enhance host resistance to these bacteria.
Tárgyszavak:Orvostudományok Klinikai orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban
Megjelenés:Infection and Immunity. - 68 : 4 (2000), p. 2167-2170. -
További szerzők:Káposzta Rita (1968-) (csecsemő- és gyermekgyógyász) Nemes Éva (1957-) (csecsemő- és gyermekgyógyász, gasztroenterológus)
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001-es BibID:BIBFORM016299
Első szerző:Nemes Éva (csecsemő- és gyermekgyógyász, gasztroenterológus)
Cím:Activation of human granulocytes by intravenous immunoglobulin preparations is mediated by FcgammaRII and FcgammaRIII receptors / Nemes Éva, Teichmann Farkas, Roos Dirk, Maródi László
Dátum:2000
ISSN:0031-3998
Megjegyzések:Previous studies from our laboratory have shown that i.v. Ig (IVIG) exposure triggers superoxide anion (O2) generation by and increases bactericidal capacity of human blood granulocytes. However, the molecular interactions between IVIG and granulocytes have not been evaluated before. The objective of this study was to investigate the role of FcgammaRII and FcgammaRIII receptors in the immunomodulatory effects of IVIG concentrates on granulocytes. We found that four different IVIG preparations (concentration range, 1-10 mg/mL) shared the ability to stimulate O2- release in vitro by granulocytes in a dose-dependent manner. Dimers fractionated from IVIG were significantly more potent in inducing activity of the respiratory burst than were monomers. MAb (concentration range, 0.1-10 microg/mL) specific for FcgammaRII and FcgammaRIII receptors inhibited the IVIG-induced O2- release, with a more profound inhibitory effect observed with anti-FcgammaRIII. These findings suggest the involvement of Fcgamma receptors in triggering O2- release by granulocytes exposed to IVIG. We also report that IVIG added to granulocyte suspensions elicited a rapid and vigorous increase in the concentration of cytosolic free calcium, a finding suggesting direct activation and not priming of granulocytes by IVIG through FcgammaRII and FcgammaRIII receptors. The in vitro effects described here might occur in patients treated with IVIG and may, in part, be responsible for inflammatory reactions evoked by infused Ig concentrates as well as the immunomodulatory effect of Ig in patients with autoimmune and inflammatory diseases.
Tárgyszavak:Orvostudományok Klinikai orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban
Megjelenés:Pediatric Research. - 47 : 3 (2000), p. 357-361. -
További szerzők:Teichmann Farkas Roos, Dirk Maródi László (1949-) (gyermekgyógyász infektológus, immunológus)
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3.

001-es BibID:BIBFORM016968
Első szerző:Tarján Péter
Cím:No short-term immunological effects of Pneumococcus vaccination in patients with systemic lupus erythematosus / P. Tarján, S. Sipka, L. Maródi, E. Nemes, G. Lakos, E. Gyimesi, E. Kiss, Gy. Ujj, Gy. Szegedi
Dátum:2002
Megjegyzések:Objectives: to investigate the early immunological effects of Pneumococcus vaccination in SLE patients and healthy controls. METHODS: First-four-week follow-up of 18 patients and 9 healthy controls by repeated measurements of anti-nuclear antibodies, anti-dsDNA, C-reactive protein, complement factor 3 (C3) and 4 (C4), total IgG, IgA and IgM. Specific antibody response, percentage of blood lymphocyte populations and whole blood chemiluminescence measurements were carried out in six patients and six controls. RESULTS: No disease flare was detected in the vaccinated patients. all side effects were mild. The concentrations of serum IgG, IgA, C3 and C4 decreased significantly, but still remained within the normal range. The other changes were statistically non-significant. The specific antibody responses to 6B and 23F Pneumococcus serotypes showed striking individual differences. CONCLUSION: There was no short-term immunological effect of Pneumococcus vaccination in the patients with SLE. The non-responders. without any sign of disease activation should possibly be given more immunogenic, new vaccines to avoid life-threatening Pneumococcus infections.
Tárgyszavak:Orvostudományok Klinikai orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban
systemic lupus erythematosus
pneumococcus vaccination
immunological effect
Megjelenés:Scandinavian Journal of Rheumatology. - 31 : 4 (2002), p. 211-215. -
További szerzők:Sipka Sándor (1945-) (laboratóriumi szakorvos) Maródi László (1949-) (gyermekgyógyász infektológus, immunológus) Nemes Éva (1957-) (csecsemő- és gyermekgyógyász, gasztroenterológus) Lakos Gabriella (1963-) (laboratóriumi szakorvos, transzfúziológus, immunológus) Gyimesi Edit (1957-) (klinikai biokémikus, vegyész) Kiss Emese (1960-) (belgyógyász, immunológus) Ujj György Szegedi Gyula (1936-2013) (belgyógyász, immunológus)
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