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  • 1
    ISSN: 1420-908X
    Keywords: Enzyme-linked immunosorbent assay (ELISA) ; Bradykinin-(1–5) ; Carageenin-induced pleurisy ; Nasal allergy ; Kinin
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We have developed an ELISA for BK-(1–5) (Arg1-Pro2-Pro3-Gly4-Phe5). In rat carrageenin-induced pleurisy, in which a plasma exudation peak was observed 5 h after carrageenin, BK levels in the exudates were negligible (〈60 pg/rat). BK-(1–7) (des-Phe8-Arg9-BK) was detectable (900–400 pg/rat) over the entire course of the inflammation. However, a larger amount of BK-(1–5) was detectable in association with the increase in plasma exudation, showing a peak (8800±1200 pg/rat) 3 h after carrageenin. Bromelain (10 mg/kg, i.v.) and soy bean trypsin inhibitor (0.3 mg/rat, intra-pleural) significantly reduced BK-(1–5) levels (by 60–93%, 3, 7 and 19 h after carrageenin) and plasma exudation rates (by 61–74%, 3 and 7 h after carrageenin). Dexamethasone (0.3 mg/kg, i.p.) reduced BK-(1–5) levels (by 78%) and decreased plasma exudation (by 70%) 3 h after carrageenin. In nasal allergy patients, antigen challenge of nasal mucosa elevated BK-(1–5) levels and active kallikrein levels in nasal washes. These results verify that BK-(1–5) determined by ELISA is a good indicator for release of kinins in vivo.
    Type of Medium: Electronic Resource
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