Isolation and purification of a major allergen from Parietaria officinalis pollen.

Autor: Giuliani, A., Pini, C., Bonini, S., Mucci, N., Ferroni, L., Vicari, G.
Předmět:
Zdroj: Allergy; Aug87, Vol. 42 Issue 6, p434-440, 7p
Abstrakt: A major allergen of Parietaria officinalis, a species responsible for a large number of respiratory allergies in Mediterranean areas, has been identified and characterized. This allergen (Pol) was found in the fraction which precipitates between 70 and 100% ammonium sulphate saturation. Pol showed a molecular weight of 15,000 daltons as determined by SDS-PAGE and HPLC. The pI of Pol was in the pH region 4-6, IEF showing four major bands. Two major bands were shown by CIE, CRIE and immunoblotting; major contaminants or aggregates were also revealed by the latter technique and by HPLC. Pol showed an allergic specific activity 2 times higher than the crude extract; moreover it was shown to be a major allergen since it inhibited 29 out of 30 sera from allergic patients sensitive to P. officinalis. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index