BACKGROUND House dust mite allergens are the most important indoor allergens associated with asthma and rhinitis in Singapore and the tropics. Recent data to suggest that besides the Dermatophagoides spp., the domestic mite Blomia tropicalis (Bt) is also an important source of allergens in these regions. OBJECTIVE To evaluate the degree of allergenic cross-reactivity between Bt and D. pterony...

There is a trend among allergen extract companies to diminish the number of individual extracts available for commercial use. This is driven in part by economic considerations and in part by constraints imposed by the US Food and Drug Administration. As much as 2/3 of previously manufactured extracts are or will no longer be available. In this setting, knowledge of pollen allergen interrelation...

Tissue printing onto membranes such as nitrocellulose is a technique employed to study the localization of proteins, nucleic acids, and soluble metabolites from freshly cut tissue slices. We probed tissue prints of young and mature celery (Apium graveolens) petioles with antibodies raised against two proteins, spinach ribulose-1,5-bisphosphate carboxylase and tomato fruit catalase. The purposes...

Several studies have demonstrated different cross-reactivity patterns between proton pump inhibitors (PPIs). The aim of this study was to investigate cross-reactivity between commercially available PPIs and establish a procedure for performing cutaneous tests for verifying PPI allergy. We performed skin prick and intradermal tests with all commercially available PPIs in 5 patients with clinical...

Serological cross-reactivity between the products of the H-2K and H-2D genes has been demonstrated by a design in which antibody was produced against determinants controlled by one locus (e .g . H-2K(k)), and then tested against the product of the opposite locus (e .g . H-2D(d)). A total of 13 out of 18 such test combinations exhibited H-2K-H-2D cross-reactivity. The presence or absence of cros...