In 18 ragweed hay fever patients who received injections of alum-precipitated pyridine (Allpyral) ragweed extracts in maintenance doses of between 6000 and 8000 P.N.U. at intervals of between two and four months over a two-year period, the prolonged interval did not seem to influence either the clinical response or the tendency to reaction, or result in significant change in immunological tolerance as determined by antibody studies, which included fluorescent antibody assays, as well as hemagglutination and RAST technics.
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Med J Aust
July 1992
Royal Hobart Hospital, Qld., Australia.
Objective: To determine the benefits of nasal allergen challenge (NAC) in monitoring immunotherapy for allergic rhinitis in a clinical setting.
Design: Two hundred consecutive courses of immunotherapy, with pyridine-extracted alum-precipitated allergen extracts (Allpyral), were personally carried out by the writer and analysed. Diagnosis before treatment was confirmed by NAC and the duration of treatment determined by periodical NAC.
Ann Allergy
January 1988
Royal Hobart Hospital, Tasmania, Australia.
A simple and safe method of nasal provocation for out-patients that requires no special equipment is described. A total of 2,645 cases were tested by nasal provocation tests. Of the total, 1,175 were tested with Dermatophagoides pteronyssinus, 825 with mixed grass pollens, 352 with plantain (Plantago lanceolata), and 125 for cats and correlating nasal tests with skin tests yielded 80%, 90%, and 85%, respectively.
View Article and Find Full Text PDFClin Allergy
September 1987
Medical Department TTA, State University Hospital, Copenhagen, Denmark.
The biological potency of therapeutic allergen extracts is fundamentally important in terms of maximal security of immunotherapy, especially when changing batches. As regards pyridine-extracted alum-precipitated allergen preparations, the potency is commercially controlled by the RAST technique. In the present study, titrated intradermal tests were performed in thirty-three adult grass-pollen rhinitis patients with three ten-fold dilutions of two batches of Allpyral 5-grass mix with different RAST activity.
View Article and Find Full Text PDFAllergol Immunopathol (Madr)
August 1987
This trial of hyposensitisation compares the efficacy and safety of an alum absorbed 2-grass extract (Phleum pratense and Dactylis glomerata) with a traditional pyridine extracted alum precipitated 5-grass preparation whose efficacy has been demonstrated previously. 33 patients, (20 Alpare, 13 Allpyral), were entered into the trial which continued for 3 years; in the second year there were 17 Alpare and 11 Allpyral patients, and 13 Alpare and 10 Allpyral in the third year. Patients on Alpare required fewer dosage modifications due to adverse effects, but otherwise the treatments proved comparable.
View Article and Find Full Text PDFAllerg Immunol (Paris)
September 1986
Centre de Recherche en Immunologie et Rhumatologie, Centre Hospitalier de l'Université Laval.
Three modes of immunotherapy in the treatment of allergic rhinitis to grass pollen were compared in grass sensitive patients: aqueous extracts, alum precipitated extracts and alum adsorbed extracts from aqueous pyridine solution of grass pollens (Alavac G.). This study confirms the efficacy of therapy with aqueous extracts and alum precipitates where larger doses could be administrated in shorter courses.
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!