Iberian consensus on cow's milk allergy: The CIBAL Study.

BACKGROUND: The present study explores the professional opinion of a wide range of experts from the Iberian Peninsula (Spain and Portugal) and their degree of consensus about CMPA's prevention, diagnosis, treatment and progression. MATERIAL AND METHODS: A 57-item survey divided in four blocks: Prevention (14 items), Diagnosis (10 items), Treatment (19 items) and Progression (14 items) was completed by 160 panellists, experts in CPMA management (116 Spain, 44 Portugal). Each one answered the questionnaire, formulated in Portuguese and Spanish, by individually accessing an online platform in two consecutive rounds. Five possible answers were possible: "completely agree", "agree", "neither agree nor disagree", "disagree" and "completely disagree". A modified Delphi method was used. RESULTS: Consensus (more than 66% agree) was reached in 39 items (68.4%) and Discrepancy (less than 50% agree) in nine items (15.7%). Block separated analysis offers valuable differences regarding consensus. The Prevention block only reached 50%; the Diagnosis block 90%; the Treatment block 73.68%, showing a high degree of agreement on dietary treatment (15/16 items), and discrepancy or less agreement on immunotherapy treatments. The Progression block reached 71.4% consensus with discrepancy with regard to the time to perform oral food challenge and negatives prognosis consequences of accidental milk ingestion. CONCLUSIONS: This study displays the current opinions of a wide group of experts on CMPA from the Iberian Peninsula and evidence discussion lines in CMPA management. The questions on which there were situations of discrepancy, provide us with very useful information for promoting new, rigorous research enabling us to draw conclusions on these controversial aspects.

The role of regulatory T cells in the acquisition of tolerance to food allergens in children.

Food allergy is a pathological immune reaction that identifies certain harmless food proteins, usually tolerated by the majority of the people, as a threat. The prevalence of these food allergies is increasing worldwide and currently affects 8% of children. Exacerbated reactions to milk, egg and peanut are the most frequent in the pediatric population. It is well known that allergic diseases are a type 2 T-helper (Th2) immune response, characterized by the elevated production of IgE antibodies. However, little is known about the immune mechanisms responsible for the development of clinical tolerance toward food allergens. Recent studies have suggested the key role of regulatory T cells (Tregs) in controlling allergic inflammation. In this review, we discuss the importance of Tregs in the pathogenesis of food allergy and the acquisition of oral tolerance in children. Further investigation in this area will be crucial for the identification of predictive markers and the development of new therapies, which will represent a clinical and social benefit for these allergic diseases.

Clinical and immunological profile of children aged 5-9 years with persistent egg allergy before oral immunotherapy with egg. A multicenter, randomized controlled trial of the Spanish Society of Pediatric Allergy, Asthma and Clinical Immunology (SEICAP).

BACKGROUND: In children with egg protein allergy (EA), the probability of overcoming the allergy decreases with age, and the possibility of suffering severe adverse reactions as a consequence of dietetic transgressions results in worsened quality of life. One treatment option in such cases is oral immunotherapy (OIT) with foods. METHODS: We present a cohort of children with EA scheduled for OIT with pasteurized raw egg white, describing their clinical and allergic characteristics before the start of OIT. RESULTS: The median age was six years, and 93% of the patients also suffered other allergies (58% asthma and 38.6% allergy to more than two food groups). In the last year, 14.8% had suffered a severe reaction due to dietetic transgression with egg. The median IgE specific of egg white titer was 38.5kU/l. A double-blind placebo-controlled food challenge with cooked egg white was performed, and if the test proved positive, it was repeated with pasteurized raw egg white. The mean symptoms-provoking dose was 1.26g and 0.55g for cooked egg white and raw egg white, respectively. An IgE specific of ovomucoid titer of <2.045kU/l differentiated those patients that tolerated cooked egg white. CONCLUSIONS: OIT with egg is regarded as an option in patients with persistent egg allergy. In the previous challenge test, an IgE specific of ovomucoid titer of <2.045kU/l differentiates those patients that tolerate cooked egg white.

Position document: IgE-mediated cow's milk allergy.

The present document offers an update on the recommendations for managing patients with cow's milk allergy - a disorder that manifests in the first year of life, with an estimated prevalence of 1.6-3% in this paediatric age group. The main causal allergens are the caseins and proteins in lactoserum (beta-lactoglobulin, alpha-lactoalbumin), and the clinical manifestations are highly variable in terms of their presentation and severity. Most allergic reactions affect the skin, followed by the gastrointestinal and respiratory systems, and severe anaphylaxis may occur. The diagnosis of cow's milk allergy is based on the existence of a suggestive clinical history, a positive allergy study and the subsequent application of controlled exposure testing, which constitutes the gold standard for confirming the diagnosis. The most efficient treatment for cow's milk allergy is an elimination diet and the use of adequate substitution formulas. The elimination diet must include milk from other mammals (e.g., sheep, goat, etc.) due to the risk of cross-reactivity with the proteins of cow's milk. Most infants with IgE-mediated cow's milk allergy become tolerant in the first few years of life. In those cases where cow's milk allergy persists, novel treatment options may include oral immunotherapy, although most authors do not currently recommend this technique in routine clinical practice. Enough evidence is not there to confirm the efficacy of elimination diets in the mother and infant for preventing the appearance of cow's milk allergy. Likewise, no benefits have been observed with prebiotic and probiotic dietetic supplements in infants for preventing food allergy.

Specific oral tolerance induction in paediatric patients with persistent egg allergy.

INTRODUCTION: Desensitisation or specific oral tolerance induction (SOTI) to food is a new topical-therapeutic approach of food allergy for those children who have not achieved tolerance spontaneously. The objective of this study is to induce clinical tolerance in children with persistent allergy using an oral desensitisation protocol with powdered pasteurised egg. METHODS: Seventy-two patients with egg allergy confirmed by open oral challenge test were randomly assigned to SOTI or elimination diet as a control group. Forty children (5-15 years) underwent a SOTI beginning with 1mg and increasing the dosage weekly until a dose of 10g, equivalent to an egg. The control group included 32 patients (4-15 years). RESULTS: The procedure's average duration was 10 weeks (range 4-28 weeks). Three patients were withdrawn from the protocol for persistent gastrointestinal symptoms. During SOTI, 21 children (52.5%) presented symptoms. In eight the symptoms were mild and required no treatment. In the other 13 (61.90%), the reactions were more severe. Seventeen children finished the treatment over a year ago and 20 in the past 6-12 months. Thirty-seven patients (92.5%) in the active group achieved tolerance to egg, versus 21.8% in the control group. We only found statistically significant differences (p<0.05) for skin prick tests with powdered egg at various dilutions and IgG levels with egg white after SOTI. Specific IgE concentration did not change significantly. CONCLUSIONS: Our SOTI protocol is a safe, effective treatment for food allergy and of reasonable duration, confirming that tolerance can be induced in children who have not achieved it spontaneously.

[Consensus position document on the child with an allergic reaction after vaccination or an allergy to vaccine components]. / Documento de consenso sobre la actitud ante un niño con una reacción alérgica tras la vacunación o alergia a componentes vacunales.

Vaccinations are one of the main public health tools for the control of vaccine-preventable diseases. If a child is labeled to have had an allergic reaction to a vaccine, the next immunizations will probably be suspended in that child, with the risks involved in this decision. The rate of severe allergic reactions is very low, ranging between 0.5-1/100,000 doses. The causes of allergic reactions to vaccines, more than the vaccine itself, are often due to residual protein components in the manufacturing process, such as gelatin or egg, and rarely to yeast or latex. Most of vaccine reactions are mild, localized at the site of injection, but in some circumstances, severe anaphylactic reactions can occur. If an immediate-type allergic reaction is suspected when vaccinating, or a child allergic to some of the vaccine components has to be vaccinated, a correct diagnosis of the possible allergy has to be made. The usual components of each vaccine should be known, in order to determine if vaccination can be performed safely on the child.

Barnacle hypersensitivity.

BACKGROUND: the aim of the present study is to investigate the responsible mechanism of different adverse reactions suffered by five patients, aged between six and thirty years-old, after consumption of barnacle. The symptoms were angioedema, dyspnea, generalized urticaria, conjunctivitis and one of them suffered from anaphylactic reaction. Four patients had personal atopic history. METHODS: the allergic study included prick by prick test with raw and boiled barnacle and prick-test with a standardized battery of shellfish and neumoallergens, specific-IgE determination to barnacle, crustacean and house-dust-mite and SDS-PAGE immunoblotting to barnacle. Even though an oral challenge was proposed to three of the patients, they were reluctant to do the test and eventually the challenges were not carried out. RESULTS: prick to prick tests were positive to barnacle for all of them. Specific-IgE was found in four patients. The western blotting results showed an IgE-binding band whose apparent molecular mass ranged between 58 and 68 kDa. CONCLUSIONS: barnacle could induce IgE-mediated adverse reaction. Our study has demonstrated the presence of an IgE-binding protein in barnacle extracts ranged between 58 and 68 kDa of molecular mass. It has not been previously described a crustacean allergen with the same molecular mass, so it could be a specific allergen from barnacle. We believe that further study will confirm this is the case.

[Sensitization to paprika: anaphylaxis after intake and rhinoconjunctivitis after contact through airways]. / Sensibilización al pimentón: anafilaxia por ingestión y rinoconjuntivitis tras contacto por vía aérea.

naphylaxis after the intake of paprika and with rhinoconjunctivitis symptoms related to her current occupation, as spices-and-condiment seller, induced the patient to attend to a medical consult. The patient tolerated another solanaceous in her diet. The study was based on skin test using own extracts of different solanaceous, both at room temperature and after warming them up. Skin test with prick-by-prick test were also carried out with fresh solanaceous. All skin tests showed a positive result. The study was completed with conjunctival challenge-test using all the different extracts (positive result with paprika) and use-test with fresh solanaceous (positive result with paprika). In laboratory study, specific IgE was detected to all the solanaceous, as well as histamine release-test positive. Crossed-reactivity between the paprika antigenic determinant recognized by the patient and the one presented by the rest of solanaceous could not be detected using RAST-inhibition studies. This results and the good tolerance of other solanaceous in diet could show that the paprika's antigenic determinant, what induced allergic symptoms in the patient, was not present in the rest of solanaceous.

La pediatría en las Jornadas Internacionales de Cine Médico de San Sebastián / Pediatrics at the International Medical Film Festival of San Sebastián

Introducción: Las Jornadas Internacionales de Cine Médico de San Sebastián fueron una actividad científica y divulgativa del cine médico (22 ediciones) cuando el acceso a estas proyecciones era muy dificultoso (1969-1991). El objetivo del presente trabajo es analizar la presencia de los temas pediátricos y su repercusión en dichas jornadas. Método: Revisión de la prensa local entre los años 1968 y 1980, los programas de mano entre los años 1981 y 1991, los boletines informativos y las memorias de las Jornadas. Resultados: De las 899 películas entre cine y vídeo presentadas en las Jornadas, 103 fueron de tema pediátrico, lo que supone un 11,4% de las mismas. Se analizan los premios, los ciclos especiales de películas y los ciclos de conferencias relativas a la atención a la infancia y la adolescencia. Conclusiones: A pesar de que la orientación de las Jornadas era eminentemente quirúrgica, la presencia de la pediatría, sobre todo en su vertiente de educación sanitaria, fue importante. La educación sexual, la psicología y la discapacidad infantil fueron los temas más presentes (AU)

Introduction: San Sebastian International Medical Film Journeys were a scientific and educational activity of medical film (22 editions) when the access to these projections was very difficult. The objective of the present study is to analyze the presence of Pediatric subjects and their impact on these journeys. Method: Review of the local press (years 1968-1980), the programs hand (years 1981-1991), newsletters and the memories of the journeys. Results: 899 movies, film or video, were presented in the Journeys. One hundred and three of them were about Pediatric subject, representing 11.4%. We are going to analyze them awards, special cycles of movies and conferences. Conclusions: The orientation of these journeys was eminently surgical, but the presence of the Pediatrics was important, above all in his shed of education health. The themes sex education, psychology, and child disability were the most present (AU)

Documento de consenso sobre la actitud ante un niño con una reacción alérgica tras la vacunación o alergia a componentes vacunales / Consensus position document on the child with an allergic reaction after vaccination or an allergy to vaccine components

Las vacunaciones constituyen una de las principales herramientas de salud pública para el control de las enfermedades inmunoprevenibles. Si un niño es etiquetado de haber presentado una reacción alérgica a una vacuna es probable que se suspendan las siguientes inmunizaciones, con los riesgos que ello conlleva. La tasa de reacciones alérgicas graves es muy baja, oscilando entre 0,5 y 1/100.000 dosis. Las proteínas causantes de las reacciones alérgicas, más que los propios antígenos vacunales, son frecuentemente componentes residuales del proceso de fabricación, como son la gelatina y el huevo, y más raramente las levaduras o el látex. La mayoría de las reacciones son leves y localizadas en el lugar de la inyección, aunque en algunos casos pueden producirse reacciones anafilácticas graves. Si se sospecha que se ha producido una reacción alérgica inmediata a la vacuna, o si debemos vacunar a un niño con alergia a alguno de sus componentes, se deberá realizar un correcto diagnóstico de la posible alergia y conocer los componentes habituales de cada vacuna con el fin de determinar si la vacunación puede continuarse de forma segura

Vaccinations are one of the main public health tools for the control of vaccine-preventable diseases. If a child is labeled to have had an allergic reaction to a vaccine, the next immunizations will probably be suspended in that child, with the risks involved in this decision. The rate of severe allergic reactions is very low, ranging between 0.5-1/100,000 doses. The causes of allergic reactions to vaccines, more than the vaccine itself, are often due to residual protein components in the manufacturing process, such as gelatin or egg, and rarely to yeast or latex. Most of vaccine reactions are mild, localized at the site of injection, but in some circumstances, severe anaphylactic reactions can occur. If an immediate-type allergic reaction is suspected when vaccinating, or a child allergic to some of the vaccine components has to be vaccinated, a correct diagnosis of the possible allergy has to be made. The usual components of each vaccine should be known, in order to determine if vaccination can be performed safely on the child

Tolerance to cephalosporins in nonimmediate hypersensitivity to penicillins in pediatric patients

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Neumonitis por hipersensibilidad en el ámbito escolar / Hypersensitivity pneumonitis in the school environment

No disponible

Iberian consensus on cow's milk allergy: The CIBAL Study

BACKGROUND: The present study explores the professional opinion of a wide range of experts from the Iberian Peninsula (Spain and Portugal) and their degree of consensus about CMPA's prevention, diagnosis, treatment and progression. Material and methodsA 57-item survey divided in four blocks: Prevention (14 items), Diagnosis (10 items), Treatment (19 items) and Progression (14 items) was completed by 160 panellists, experts in CPMA management (116 Spain, 44 Portugal). Each one answered the questionnaire, formulated in Portuguese and Spanish, by individually accessing an online platform in two consecutive rounds. Five possible answers were possible: "completely agree", "agree", "neither agree nor disagree", "disagree" and "completely disagree". A modified Delphi method was used. RESULTS: Consensus (more than 66% agree) was reached in 39 items (68.4%) and Discrepancy (less than 50% agree) in nine items (15.7%). Block separated analysis offers valuable differences regarding consensus. The Prevention block only reached 50%; the Diagnosis block 90%; the Treatment block 73.68%, showing a high degree of agreement on dietary treatment (15/16 items), and discrepancy or less agreement on immunotherapy treatments. The Progression block reached 71.4% consensus with discrepancy with regard to the time to perform oral food challenge and negatives prognosis consequences of accidental milk ingestion. CONCLUSIONS: This study displays the current opinions of a wide group of experts on CMPA from the Iberian Peninsula and evidence discussion lines in CMPA management. The questions on which there were situations of discrepancy, provide us with very useful information for promoting new, rigorous research enabling us to draw conclusions on these controversial aspects

No disponible

The role of regulatory T cells in the acquisition of tolerance to food allergens in children

Food allergy is a pathological immune reaction that identifies certain harmless food proteins, usually tolerated by the majority of the people, as a threat. The prevalence of these food allergies is increasing worldwide and currently affects 8% of children. Exacerbated reactions to milk, egg and peanut are the most frequent in the pediatric population. It is well known that allergic diseases are a type 2 T-helper (Th2) immune response, characterized by the elevated production of IgE antibodies. However, little is known about the immune mechanisms responsible for the development of clinical tolerance toward food allergens. Recent studies have suggested the key role of regulatory T cells (Tregs) in controlling allergic inflammation. In this review, we discuss the importance of Tregs in the pathogenesis of food allergy and the acquisition of oral tolerance in children. Further investigation in this area will be crucial for the identification of predictive markers and the development of new therapies, which will represent a clinical and social benefit for these allergic diseases

No disponible