Bradykinin- and lipopolysaccharide-induced bradykinin B2 receptor expression, interleukin 8 release and "nitrosative stress" in bronchial epithelial cells BEAS-2B: role for neutrophils. 2012

Fabio L M Ricciardolo, and Valentina Sorbello, and Sabrina Benedetto, and Ilaria Defilippi, and Federica Sabatini, and Andrea Robotti, and Dein C van Renswouw, and Caterina Bucca, and Gert Folkerts, and Virginia De Rose
Department of Clinical and Biological Sciences, Division of Respiratory Disease, University of Torino, Torino, Italy. fabioluigimassimo.ricciardolo@unito.it

Bradykinin-induced interleukin (IL)-8 release should potentially activate neutrophils releasing myeloperoxidase (MPO) and subsequently generating "nitrosative stress". We studied bradykinin-induced expression of bradykinin B(2) receptor and bradykinin- and lipopolysaccharide (LPS)-induced IL-8 release, MPO (marker of neutrophil activation) and 3-nitrotyrosine (3-NT; marker of "nitrosative stress") production in human bronchial epithelial cells BEAS-2B alone or in co-culture with human neutrophils. We evaluated B(2) receptor protein expression in BEAS-2B cells by immunostainings and Western blot analysis, and measured respectively bradykinin- or LPS-induced IL-8 release in BEAS-2B cells and bradykinin- and/or LPS-induced MPO and 3-NT production in BEAS-2B cells co-cultured with human neutrophils by ELISA. In addition, we evaluated bradykinin- and/or LPS-induced 3-NT formation in BEAS-2B cells co-cultured with human neutrophils by immunocytochemistry. Bradykinin up-regulates B(2) receptor expression (P<0.05) and stimulate IL-8 release (P<0.001) in BEAS-2B cells. Either the selective bradykinin B(2) receptor antagonist HOE 140 or the selective bradykinin B(1) receptor antagonist Lys-(des-Arg(9), Leu(8))-bradykinin alone halved IL-8 release and the combination of both drugs suppressed this effect. In BEAS-2B cells co-cultured with human neutrophils bradykinin increased MPO release and 3-NT production compared to BEAS-2B cells with human neutrophils (P<0.001), and the addition of LPS in BEAS-2B cells with human neutrophils and bradykinin induced a further dramatically increase of MPO release and 3-NT formation (P<0.001). Bradykinin and LPS provoked "nitrosative stress", potentially mediated by IL-8, in bronchial epithelium co-cultured with neutrophils suggesting a role for bradykinin in the amplification of chronic airway inflammation via production of "nitrosative stress".

UI MeSH Term Description Entries
D008070 Lipopolysaccharides Lipid-containing polysaccharides which are endotoxins and important group-specific antigens. They are often derived from the cell wall of gram-negative bacteria and induce immunoglobulin secretion. The lipopolysaccharide molecule consists of three parts: LIPID A, core polysaccharide, and O-specific chains (O ANTIGENS). When derived from Escherichia coli, lipopolysaccharides serve as polyclonal B-cell mitogens commonly used in laboratory immunology. (From Dorland, 28th ed) Lipopolysaccharide,Lipoglycans
D009195 Peroxidase A hemeprotein from leukocytes. Deficiency of this enzyme leads to a hereditary disorder coupled with disseminated moniliasis. It catalyzes the conversion of a donor and peroxide to an oxidized donor and water. EC 1.11.1.7. Myeloperoxidase,Hemi-Myeloperoxidase,Hemi Myeloperoxidase
D009504 Neutrophils Granular leukocytes having a nucleus with three to five lobes connected by slender threads of chromatin, and cytoplasm containing fine inconspicuous granules and stainable by neutral dyes. LE Cells,Leukocytes, Polymorphonuclear,Polymorphonuclear Leukocytes,Polymorphonuclear Neutrophils,Neutrophil Band Cells,Band Cell, Neutrophil,Cell, LE,LE Cell,Leukocyte, Polymorphonuclear,Neutrophil,Neutrophil Band Cell,Neutrophil, Polymorphonuclear,Polymorphonuclear Leukocyte,Polymorphonuclear Neutrophil
D001920 Bradykinin A nonapeptide messenger that is enzymatically produced from KALLIDIN in the blood where it is a potent but short-lived agent of arteriolar dilation and increased capillary permeability. Bradykinin is also released from MAST CELLS during asthma attacks, from gut walls as a gastrointestinal vasodilator, from damaged tissues as a pain signal, and may be a neurotransmitter. Arg-Pro-Pro-Gly-Phe-Ser-Pro-Phe-Arg,Bradykinin Acetate, (9-D-Arg)-Isomer,Bradykinin Diacetate,Bradykinin Hydrochloride,Bradykinin Triacetate,Bradykinin, (1-D-Arg)-Isomer,Bradykinin, (2-D-Pro)-Isomer,Bradykinin, (2-D-Pro-3-D-Pro-7-D-Pro)-Isomer,Bradykinin, (2-D-Pro-7-D-Pro)-Isomer,Bradykinin, (3-D-Pro)-Isomer,Bradykinin, (3-D-Pro-7-D-Pro)-Isomer,Bradykinin, (5-D-Phe)-Isomer,Bradykinin, (5-D-Phe-8-D-Phe)-Isomer,Bradykinin, (6-D-Ser)-Isomer,Bradykinin, (7-D-Pro)-Isomer,Bradykinin, (8-D-Phe)-Isomer,Bradykinin, (9-D-Arg)-Isomer,Arg Pro Pro Gly Phe Ser Pro Phe Arg
D001980 Bronchi The larger air passages of the lungs arising from the terminal bifurcation of the TRACHEA. They include the largest two primary bronchi which branch out into secondary bronchi, and tertiary bronchi which extend into BRONCHIOLES and PULMONARY ALVEOLI. Primary Bronchi,Primary Bronchus,Secondary Bronchi,Secondary Bronchus,Tertiary Bronchi,Tertiary Bronchus,Bronchi, Primary,Bronchi, Secondary,Bronchi, Tertiary,Bronchus,Bronchus, Primary,Bronchus, Secondary,Bronchus, Tertiary
D002460 Cell Line Established cell cultures that have the potential to propagate indefinitely. Cell Lines,Line, Cell,Lines, Cell
D004847 Epithelial Cells Cells that line the inner and outer surfaces of the body by forming cellular layers (EPITHELIUM) or masses. Epithelial cells lining the SKIN; the MOUTH; the NOSE; and the ANAL CANAL derive from ectoderm; those lining the RESPIRATORY SYSTEM and the DIGESTIVE SYSTEM derive from endoderm; others (CARDIOVASCULAR SYSTEM and LYMPHATIC SYSTEM) derive from mesoderm. Epithelial cells can be classified mainly by cell shape and function into squamous, glandular and transitional epithelial cells. Adenomatous Epithelial Cells,Columnar Glandular Epithelial Cells,Cuboidal Glandular Epithelial Cells,Glandular Epithelial Cells,Squamous Cells,Squamous Epithelial Cells,Transitional Epithelial Cells,Adenomatous Epithelial Cell,Cell, Adenomatous Epithelial,Cell, Epithelial,Cell, Glandular Epithelial,Cell, Squamous,Cell, Squamous Epithelial,Cell, Transitional Epithelial,Cells, Adenomatous Epithelial,Cells, Epithelial,Cells, Glandular Epithelial,Cells, Squamous,Cells, Squamous Epithelial,Cells, Transitional Epithelial,Epithelial Cell,Epithelial Cell, Adenomatous,Epithelial Cell, Glandular,Epithelial Cell, Squamous,Epithelial Cell, Transitional,Epithelial Cells, Adenomatous,Epithelial Cells, Glandular,Epithelial Cells, Squamous,Epithelial Cells, Transitional,Glandular Epithelial Cell,Squamous Cell,Squamous Epithelial Cell,Transitional Epithelial Cell
D005786 Gene Expression Regulation Any of the processes by which nuclear, cytoplasmic, or intercellular factors influence the differential control (induction or repression) of gene action at the level of transcription or translation. Gene Action Regulation,Regulation of Gene Expression,Expression Regulation, Gene,Regulation, Gene Action,Regulation, Gene Expression
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D014443 Tyrosine A non-essential amino acid. In animals it is synthesized from PHENYLALANINE. It is also the precursor of EPINEPHRINE; THYROID HORMONES; and melanin. L-Tyrosine,Tyrosine, L-isomer,para-Tyrosine,L Tyrosine,Tyrosine, L isomer,para Tyrosine

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