Leukocyte Adherence Inhibition Test to the assessment of Immunoreactivity Against Cow’s Milk Proteins in Non—IgE-Mediated Gastrointestinal Food Allergy


  •   Celso Eduardo Olivier

  •   Daiana G. Pinto

  •   Ana Paula M. Teixeira

  •   Jhéssica L. S. Santana

  •   Raquel A. P. G. Santos

  •   Regiane P. S. Lima


Background:  The non—IgE-mediated food allergy syndromes are a group of conditions diagnosed mostly by clinical criteria and Oral Food Challenge tests (OFC).

Objective:  To evaluate the feasibility of the Leukocyte Adherence Inhibition Test (LAIT) to discriminate antigen-specific immunoreactivity in a group of patients with non—IgE-mediated cow’s milk allergy diagnosed by OFC and clinical criteria.

Methods:  Ex vivo challenge tests performed with cow’s milk proteins extracts were monitored by LAIT in two groups: A) the active group consisting of 38 patients presenting non—IgE-mediated gastrointestinal lactose-free cow’s milk hypersensitivity; B) the control group consisting of 29 cow’s milk tolerant individuals

Results:  The mean Leukocyte Adherence Inhibition (LAI) of the control group was 5.48%, and the mean LAI of the active group was 54.18%.  The non-parametric Wilcoxon-Mann-Whitney U test showed p < α = 0.05.

Conclusion:  The Leukocyte Adherence Inhibition Test is an ex vivo immunoassay able to predict individual non—IgE-mediated immunoreactivity against cow’s milk allergens and to act as a triage test to select food allergens to be prescribed in exclusion diets to perform OFC in patients with suspected non—IgE-mediated food allergies.

Keywords: Adult, allergy, antigen, food, cellular immunity, enterocolitis, hypersensitivity, immunoassay, leukocyte adherence inhibition test, milk


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How to Cite
Olivier, C. E., Pinto, D. G., Teixeira, A. P. M., Santana, J. L. S., Santos, R. A. P. G., & Lima, R. P. S. (2022). Leukocyte Adherence Inhibition Test to the assessment of Immunoreactivity Against Cow’s Milk Proteins in Non—IgE-Mediated Gastrointestinal Food Allergy. European Journal of Clinical Medicine, 3(2), 38–43. https://doi.org/10.24018/clinicmed.2022.3.2.189

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