Figura 2: Valores de IgE específica sérica para leche de
vaca y para cada una de sus proteínas. ITO:
Inmunoterapia Oral. LV: Leche de vaca.
Conclusión
En el caso presentado, se evidencia descenso de las
IgEs, en un paciente con APLV bajo tratamiento
con ITO, como expresión de la inducción de
tolerancia inmunológica, lo cual se correlaciona
con la evolución clínica del niño.
Introduction
The prevalence of food allergy in paediatrics has
increased in recent years; the most frequent food
involved is cow's milk1. Allergy to cow's milk
protein (CMPA) affects the quality of life of the
patient and his or her family because it requires
exclusion diet and rescue medication for probable
reactions to accidental food intake1. There are
currently advances in the study of oral
immunotherapy (OIT) with cow's milk (CM).2,3
Some studies show a decrease in specific IgE
(IgEs) for CM, while other authors refer no
changes after treatment with OIT3.
Case development
7-year-old boy, diagnosed with CMPA from 6
months of age based on the presence of urticaria,
angioedema and immediate respiratory symptoms
following intake of CM, and positive IgEs for CM
(27.02KU/L), alpha-lactoalbumin (ALA) 32.2
KU/L, beta-lactoglobulin (BLG) 30.2 KU/L and
caseine (CA) 39,5KU/L. The child starts on a CM-
excluding diet from 6 months of age, with good
evolution and only has sporadic symptoms after
accidental ingestion. At 5 years of age he has a
positive CM challenge4 and therefore initiates
treatment with ITO. The induction phase of the
desensitizing treatment lasted 12 months and is
currently undergoing maintenance phase with
200ml of CM per day. Complementary studies
have shown a decrease in IgEs for CM, ALA, BLG
nd CA in both skin prick tests (Figure 1) and serum
level (Figure 2). Actually, he is symptom-free
against intake of CM proteins.
Conclusion
In the case presented, a decrease in IgEs is
evidenced in a patient with CMPA under OIT
treatment, as an expression of the induction of
immunological tolerance, which is correlated with
the clinical evolution of the child.
8
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