We plan to determine changes in the immune system during the allergic response to grass pollen allergens. We have chosen a particular element of the immune response, the immunoglobulin G4 (IgG4) as an indicator. We hypothesize that treatment with Grazax will increase serum levels of Phleum pratense specific IgG4 and IgE, as well as reduce the cutaneous sensitivity of the early (IgE mediated) and late (cell mediated) allergic response.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
TRIPLE
Enrollment
76
Hospital Clinico San Carlos
Madrid, Madrid, Spain
Difference in serum leves of IgG4
Time frame: 6 months
Changes in IgE level
Time frame: 6 months
Changes in cutaneous response
Time frame: 6 months
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