title: Expression and localization of nuclear factor-kappa B subunits in cultured human paranasal sinus mucosal cells.
abstract: The purpose of this study was to compare the expression of cytokines and nuclear factor-kappa B (NF-kappa B) subunits in cultured sinus mucosal cells by semiquantitative reverse transcription-polymerase chain reaction (RT-PCR) in chronic sinusitis patients with allergic rhinitis (abbreviated as AR patients) versus patients without AR (abbreviated as non-AR patients). The localization of p50 in cultured sinus mucosal cells was also observed by immunocytochemistry. The expression of messenger RNAs (mRNA) encoding granulocyte-macrophage colony-stimulating factor (GM-CSF), interleukin (IL)-6, IL-8, p50 and p65 subunits, and inhibitory kappa B-alpha (I kappa B-alpha) were analyzed by RT-PCR. The proportion of active NF-kappa B-positive cells in the epithelial layer was analyzed using a laser-scanning confocal microscope image system. The levels of GM-CSF, IL-6, IL-8, and p50 mRNAs in AR patients were significantly higher than those in non-AR patients (p < 0.01, p < 0.01, p < 0.01, and p < 0.001, respectively). Immunocytochemical reaction for p50 in sinus mucosal cells in AR patients showed more intense nuclear staining compared to non-AR patients. These findings could support the hypothesis that the increase of cytokines from sinus mucosal cells in AR patients was associated with augmented NF-kappa B mRNA expression, resulting in the modification of the cytokine network.
authors.affiliation: Department of Otolaryngology, Hiroshima University School of Medicine, Kasumi 1-2-3, Minami-ku, Hiroshima 734-8551, Japan. osadam@ff.iij4u.or.jp
authors.forename: Rika
authors.initials: R
authors.lastname: Osada
authors.forename: Sachio
authors.initials: S
authors.lastname: Takeno
authors.forename: Katsuhiro
authors.initials: K
authors.lastname: Hirakawa
authors.forename: Tsutomu
authors.initials: T
authors.lastname: Ueda
authors.forename: Kyosuke
authors.initials: K
authors.lastname: Furukido
authors.forename: Koji
authors.initials: K
authors.lastname: Yajin
mesh_terms: D016022:Case-Control Studies; D002478:Cells, Cultured; D016207:Cytokines / Q000378:metabolism; D005260:Female; D015870:Gene Expression; D006801:Humans; D008297:Male; D008875:Middle Aged; D016328:NF-kappa B / Q000378:metabolism*; D009297:Nasal Mucosa / Q000166:cytology / Q000378:metabolism*; D010256:Paranasal Sinuses / Q000166:cytology*; D012333:RNA, Messenger / Q000235:genetics; D020133:Reverse Transcriptase Polymerase Chain Reaction; D012221:Rhinitis, Allergic, Perennial / Q000150:complications / Q000378:metabolism*; D012852:Sinusitis / Q000150:complications / Q000378:metabolism*
chemical_list: D016207:Cytokines; D016328:NF-kappa B; D012333:RNA, Messenger