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1.

001-es BibID:BIBFORM055863
Első szerző:Bácsi Attila (immunológus)
Cím:Pro-oxidant activity of pollen and mold proteins induces oxidative stress in the lungs independent of adaptive immunity / Bácsi Attila, Sur Sanjiv, Choudhury Barun K., Alam Rafeul, Boldogh István
Dátum:2003
Tárgyszavak:Természettudományok Biológiai tudományok idézhető absztrakt
Megjelenés:Journal of Allergy and Clinical Immunology. - 111 : Suppl. 1 (2003), p. S340. -
További szerzők:Sur, Sanjiv Choudhury, Barun K. Alam, Rafeul Boldogh István
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2.

001-es BibID:BIBFORM055867
Első szerző:Boldogh István
Cím:Oxidative Stress Generated by Intrinsic Pollen NADPH Oxidases Is Required for Inducing Allergic Airway Inflammation / Boldogh István, Bácsi Attila, Choudhury Barun K., Dharajiya Nilesh, Alam Rafeul, Sur Sanjiv
Dátum:2004
Tárgyszavak:Természettudományok Biológiai tudományok idézhető absztrakt
Megjelenés:Journal of Allergy and Clinical Immunology. - 113 (2004), p. S164. -
További szerzők:Bácsi Attila (1967-) (immunológus) Choudhury, Barun K. Dharajiya, Nilesh G. Alam, Rafeul Sur, Sanjiv
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3.

001-es BibID:BIBFORM047644
Első szerző:Boldogh István
Cím:ROS generated by pollen NADPH oxidase provide a signal that augments antigen-induced allergic airway inflammation / Istvan Boldogh, Attila Bacsi, Barun K. Choudhury, Nilesh Dharajiya, Rafeul Alam, Tapas K. Hazra, Sankar Mitra, Randall M. Goldblum, Sanjiv Sur
Dátum:2005
ISSN:0021-9738
Megjegyzések:Pollen exposure induces allergic airway inflammation in sensitized subjects. The role of antigenic pollen proteinsin the induction of allergic airway inflammation is well characterized, but the contribution of otherconstituents in pollen grains to this process is unknown. Here we show that pollen grains and their extractscontain intrinsic NADPH oxidases. The pollen NADPH oxidases rapidly increased the levels of ROS in lungepithelium as well as the amount of oxidized glutathione (GSSG) and 4-hydroxynonenal (4-HNE) in airwayliningfluid. These oxidases, as well as products of oxidative stress (such as GSSG and 4-HNE) generated bythese enzymes, induced neutrophil recruitment to the airways independent of the adaptive immune response.Removal of pollen NADPH oxidase activity from the challenge material reduced antigen-induced allergic airwayinflammation, the number of mucin-containing cells in airway epithelium, and antigen-specific IgE levelsin sensitized mice. Furthermore, challenge with Amb a 1, the major antigen in ragweed pollen extract that doesnot possess NADPH oxidase activity, induced low-grade allergic airway inflammation. Addition of GSSG or4-HNE to Amb a 1 challenge material boosted allergic airway inflammation. We propose that oxidative stressgenerated by pollen NADPH oxidases (signal 1) augments allergic airway inflammation induced by pollenantigen (signal 2).
Tárgyszavak:Orvostudományok Elméleti orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban
DNA double strand breaks
Megjelenés:Journal of Clinical Investigation. - 115 : 8 (2005), p. 2169-2179. -
További szerzők:Bácsi Attila (1967-) (immunológus) Choudhury, Barun K. Dharajiya, Nilesh G. Alam, Rafeul Hazra, Tapas K. Mitra, Sankar Goldblum, Randall M. Sur, Sanjiv
Internet cím:Szerző által megadott URL
DOI
Intézményi repozitóriumban (DEA) tárolt változat
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4.

001-es BibID:BIBFORM055865
Első szerző:Choudhury, Barun K.
Cím:Stimulation of Innate Immune Response Induces Long Term Allergic Sensitization and Allergic Airway Inflammation Independent of STAT-6 / Choudhury Barun K., Wild James S., Dharajiya Nilesh, Bácsi Attila, Alam Rafeul, Boldogh István, Sur Sanjiv
Dátum:2004
Tárgyszavak:Természettudományok Biológiai tudományok idézhető absztrakt
Megjelenés:Journal of Allergy and Clinical Immunology. - 113 : Suppl. 2. (2004), p. S163. -
További szerzők:Wild, James R. Dharajiya, Nilesh G. Bácsi Attila (1967-) (immunológus) Alam, Rafeul Boldogh István Sur, Sanjiv
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5.

001-es BibID:BIBFORM055869
Első szerző:Dharajiya, Nilesh G.
Cím:Inhibiting pollen NADPH oxidase-induced signal by intrapulmonary administration of antioxidants blocks allergic airway inflammation / Dharajiya Nilesh, Choudhury Barun K., Bácsi Attila, Boldogh István, Alam Rafeul, Sur Sanjiv
Dátum:2007
Tárgyszavak:Természettudományok Biológiai tudományok idézhető absztrakt
Megjelenés:Journal of Allergy and Clinical Immunology. - 119 (2007), p. S128. -
További szerzők:Choudhury, Barun K. Bácsi Attila (1967-) (immunológus) Boldogh István Alam, Rafeul Sur, Sanjiv
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6.

001-es BibID:BIBFORM002000
Első szerző:Dharajiya, Nilesh G.
Cím:Inhibiting pollen reduced nicotinamide adenine dinucleotide phosphate oxidase-induced signal by intrapulmonary administration of antioxidants blocks allergic airway inflammation / Nilesh Dharajiya, Barun K. Choudhury, Attila Bacsi, Istvan Boldogh, Rafeul Alam, Sanjiv Sur
Dátum:2007
Megjegyzések:Ragweed extract (RWE) contains NADPH oxidases that induce oxidative stress in the airways independent of adaptive immunity (signal 1) and augment antigen (signal 2)-induced allergic airway inflammation. OBJECTIVE: To test whether inhibiting signal 1 by administering antioxidants inhibits allergic airway inflammation in mice. METHODS: The ability of ascorbic acid (AA), N-acetyl cystenine (NAC), and tocopherol to scavenge pollen NADPH oxidase-generated reactive oxygen species (ROS) was measured. These antioxidants were administered locally to inhibit signal 1 in the airways of RWE-sensitized mice. Recruitment of inflammatory cells, mucin production, calcium-activated chloride channel 3, IL-4, and IL-13 mRNA expression was quantified in the lungs. RESULTS: Antioxidants inhibited ROS generation by pollen NADPH oxidases and intracellular ROS generation in cultured epithelial cells. AA in combination with NAC or Tocopherol decreased RWE-induced ROS levels in cultured bronchial epithelial cells. Coadministration of antioxidants with RWE challenge inhibited 4-hydroxynonenal adduct formation, upregulation of Clca3 and IL-4 in lungs, mucin production, recruitment of eosinophils, and total inflammatory cells into the airways. Administration of antioxidants with a second RWE challenge also inhibited airway inflammation. However, administration of AA+NAC 4 or 24 hours after RWE challenge failed to inhibit allergic inflammation. CONCLUSION: Signal 1 plays a proinflammatory role during repeated exposure to pollen extract. We propose that inhibiting signal 1 by increasing antioxidant potential in the airways may be a novel therapeutic strategy to attenuate pollen-induced allergic airway inflammation. CLINICAL IMPLICATIONS: Administration of antioxidants in the airways may constitute a novel therapeutic strategy to prevent pollen induced allergic airway inflammation.
Tárgyszavak:Orvostudományok Elméleti orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban
Allergy
inflammation
antioxidants
eosinophils
TH2
Megjelenés:The Journal of allergy and clinical immunology 119 : 3 (2007), p. 646-653. -
További szerzők:Choudhury, Barun K. Bácsi Attila (1967-) (immunológus) Boldogh István Alam, Rafeul Sur, Sanjiv
Internet cím:elektronikus változat
DOI
elektronikus változat
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