Figures & data
An in vitro dissolution assay endorsed by the European Pharmacopoeia (Ph. Eur. 2.9.3 dissolution test for solid dosage forms, apparatus 4 flow-through cell [Citation31]) was used to investigate the dissolution time of 6 replicate samples of the 300 IR or 100 IR HDM and 5 grass pollen SLIT tablets, and the amount of allergenic activity released at each time point was measured using an ELISA-based assayELISA, enzyme-linked immunosorbent assay; HDM, house dust mite; IR, index of reactivity; SLIT, sublingual immunotherapy.
This was an ex vivo study not related to SLIT tablet use. Using oromucosal tissue from individuals with grass pollen allergy (n = 5) or non-atopic individuals (n = 5), incubated with fluorescein isothiocyanate-coupled Phl p 5 (1 mg/mL) at 37°C for the specified times, significant binding of Phl p 5 to Langerhans cells was detected from 5°minutes of allergen exposure onwards, and binding capacity was comparable between tissue samples. Figure adapted from Allam et al. 2010 [Citation32].SLIT, sublingual immunotherapy.