Specific IgE to cross-reactive carbohydrate determinants strongly affect the in vitro diagnosis of allergic diseases Adriano Mari, MD, Patrizia Iacovacci,

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Presentation transcript:

Specific IgE to cross-reactive carbohydrate determinants strongly affect the in vitro diagnosis of allergic diseases Adriano Mari, MD, Patrizia Iacovacci, BD, Claudia Afferni, BD, Bianca Barletta, BD, Raffaella Tinghino, BD, Gabriella Di Felice, BD, Carlo Pini, BD Journal of Allergy and Clinical Immunology Volume 103, Issue 6, Pages 1005-1011 (June 1999) DOI: 10.1016/S0091-6749(99)70171-5 Copyright © 1999 Mosby, Inc. Terms and Conditions

Fig. 1 Specific IgE inhibition performed on the IgE capture system (CARLA) by using a buffer solution instead of an allergen and ascorbate oxidase (open diamonds) , bromelain (open triangles) , bee venom phospholipase A2 (open circles) , olive extract (filled triangles) , and mite extract (filled inverted triangle) as inhibitors (serum 1103). Mean value of 2 noninhibited determinations = 7.62 IU/mL; negative cut-off value = 0.5 IU/mL. Journal of Allergy and Clinical Immunology 1999 103, 1005-1011DOI: (10.1016/S0091-6749(99)70171-5) Copyright © 1999 Mosby, Inc. Terms and Conditions

Fig. 2 Specific IgE inhibition performed with the serum of the reported patient on CAP system by using bromelain (code Rk202) as antigen and ascorbate oxidase (open diamonds) , bromelain (open triangles) , bee venom phospholipase A2 (open circles) , rye grass extract (filled circles) , mountain cedar extract (filled diamonds) , olive extract (filled triangles) , and pellitory (filled squares) as inhibitors (serum 1103). Mean value of 2 noninhibited determinations = 10.4 kUA /L; negative cut-off value = 0.35 kUA /L. Journal of Allergy and Clinical Immunology 1999 103, 1005-1011DOI: (10.1016/S0091-6749(99)70171-5) Copyright © 1999 Mosby, Inc. Terms and Conditions

Fig. 3 Specific IgE ELISA with deglycosylated ascorbate oxidase (ASC), bromelain (BRO), rye grass extract (LOL), olive extract (OLE), and pellitory (PAR) obtained by means of a 10 mmol/L m-periodate treatment. Antigen treatment in control wells (mock control) was performed following the same procedure, excluding m-periodate treatment (serum 1225). White bars, not treated; hatched bars, mock control; black bars, periodate treated. Journal of Allergy and Clinical Immunology 1999 103, 1005-1011DOI: (10.1016/S0091-6749(99)70171-5) Copyright © 1999 Mosby, Inc. Terms and Conditions

Fig. 4 Specific IgE blotting inhibition with 500 μg of protein/mL ascorbate oxidase using ascorbate oxidase (ASC) , bromelain (BRO) , bee venom phospholipase A2 (PLA) , rye grass (LOL) , mountain cedar (JUN) , olive (OLE) , and pellitory (PAR) as antigens (serum 1225) Lanes NI, No inhibitor; lanes I, inhibited. Journal of Allergy and Clinical Immunology 1999 103, 1005-1011DOI: (10.1016/S0091-6749(99)70171-5) Copyright © 1999 Mosby, Inc. Terms and Conditions