Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 106
Filtrar
Más filtros

Banco de datos
Tipo del documento
Intervalo de año de publicación
1.
Pediatr Allergy Immunol ; 35(6): e14163, 2024 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-38825829

RESUMEN

The recognition of constipation as a possible non-Immunoglobulin E (IgE)-mediated allergic condition is challenging because functional constipation (unrelated to food allergies) is a common health problem with a reported worldwide prevalence rate of up to 32.2% in children. However, many studies in children report challenge proven cow's milk allergy and constipation as a primary symptom and have found that between 28% and 78% of children improve on a cow's milk elimination diet. Due to the paucity of data and a focus on IgE-mediated allergy, not all food allergy guidelines list constipation as a symptom of food allergy. Yet, it is included in all cow's milk allergy guidelines available in English language. The Exploring Non-IgE-Mediated Allergy (ENIGMA) Task Force (TF) of the European Academy for Allergy and Clinical Immunology (EAACI) considers in this paper constipation in the context of failure of standard treatment and discuss the role of food allergens as culprit in constipation in children. This position paper used the Delphi approach in reaching consensus on both diagnosis and management, as currently published data are insufficient to support a systematic review.


Asunto(s)
Estreñimiento , Hipersensibilidad a los Alimentos , Humanos , Estreñimiento/diagnóstico , Estreñimiento/terapia , Estreñimiento/etiología , Niño , Hipersensibilidad a los Alimentos/diagnóstico , Hipersensibilidad a los Alimentos/complicaciones , Hipersensibilidad a los Alimentos/terapia , Preescolar , Hipersensibilidad a la Leche/diagnóstico , Hipersensibilidad a la Leche/terapia , Hipersensibilidad a la Leche/complicaciones , Hipersensibilidad a la Leche/inmunología , Inmunoglobulina E/sangre , Inmunoglobulina E/inmunología , Técnica Delphi , Guías de Práctica Clínica como Asunto , Lactante , Alérgenos/inmunología , Animales , Prevalencia
2.
Pediatr Allergy Immunol ; 35(4): e14119, 2024 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-38566436

RESUMEN

The term "feeding difficulties" refers to a spectrum of phenotypes characterized by suboptimal intake of food and/or lack of age-appropriate eating habits. While it is evident that feeding difficulties are prevalent within healthy children, no consensus has been reached for those with food allergies. The aim of this study was to systematically review all the available literature reporting the prevalence of feeding difficulties within food allergic children. We searched eight international electronic databases for all published studies until June 2022. International experts in the field were also contacted for unpublished and ongoing studies. All publications were screened against pre-defined eligibility criteria and critically appraised by established instruments. The substantial heterogeneity of included studies precluded meta-analyses, so narrative synthesis of quantitative data was performed. A total of 2059 abstracts were assessed, out of which 21 underwent full-text screening and 10 studies met the study criteria. In these, 12 different terms to define feeding difficulties and 11 diagnostic tools were used. Five papers included data of feeding difficulty prevalence in children with food allergies, ranging from 13.6% to 40%. Higher prevalence was associated with multiple food allergies. The current literature suggests that feeding difficulties are prevalent within food allergic children, particularly those with multiple food allergies. However, the heterogeneity of terminologies and diagnostic tools makes drawing conclusions challenging. Consensus guidelines for the diagnosis and management of feeding difficulties within food allergic children and further research on the development and perpetuation of feeding difficulties are needed to appropriately manage such patients.


Asunto(s)
Hipersensibilidad a los Alimentos , Niño , Humanos , Hipersensibilidad a los Alimentos/epidemiología , Conducta Alimentaria
3.
Eur J Pediatr ; 183(2): 707-713, 2024 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-37973640

RESUMEN

The Cow's Milk-related Symptom Score (CoMiSS) is an awareness tool for evaluating cow's milk-related symptoms. Previous studies have focused on providing CoMiSS values for healthy and symptomatic infants aged 0-6 months. However, there is a notable gap in the literature concerning CoMiSS values for infants older than 6 months. This cross-sectional study aimed to determine CoMiSS values in presumed healthy infants who have completed 6 months and are up to 12 months old, hereafter referred to as 6 to 12 months old. Physicians from six European countries prospectively determined CoMiSS values in infants attending well-child clinics. Exclusion criteria included preterm delivery, acute or chronic disease, and the consumption of a therapeutic formula, dietary supplements (except vitamins), or medication. The following information was collected: gestational age, gender, age, type of feed (breast milk or infant formula), and complementary feeding. Descriptive statistics were summarized with mean and standard deviation for normally distributed continuous variables, median and IQR for non-normally distributed variables, and differences in CoMiSS values were analyzed with appropriate tests. Data from 609 infants were obtained. The overall median (Q1-Q3) CoMiSS values were 3 (1-5). Significant differences were found across age groups (p < 0.001), but not across groups based on gender (p = 0.551) or feeding type (p = 0.880).   Conclusions: This study provided CoMiSS values in presumed healthy infants aged 6-12 months. Additional studies should be conducted to establish the use of CoMiSS to assess cow's milk-related symptoms in infants 6 months and older. What is Known: • The Cow's Milk-related Symptom Score (CoMiSS) is an awareness tool for evaluating symptoms related to cow's milk. • CoMiSS values for presumed healthy infants aged 0-6 months infants are already available. What is New: • CoMiSS values in European infants aged 6-12 months are provided. • These CoMiSS values differed across various age groups but not across groups based on gender or feeding type.


Asunto(s)
Hipersensibilidad a la Leche , Leche , Lactante , Recién Nacido , Femenino , Animales , Bovinos , Humanos , Estudios Transversales , Hipersensibilidad a la Leche/diagnóstico , Leche Humana , Alérgenos , Fórmulas Infantiles
4.
Sante Publique ; 35(HS2): 73-78, 2024.
Artículo en Francés | MEDLINE | ID: mdl-38360778

RESUMEN

INTRODUCTION: In this article, we offer an overview of the Capdroits participatory research approach, initially focusing on the controversy surrounding Article 12 of the International Convention of Persons with Disabilities, “Recognition of legal personality under conditions of equality.” Its objective is to encourage the participation of the people concerned by Article 12. It brings together academic researchers, experts in support relationships, and people directly concerned by impediment situations. PURPOSE OF THE STUDY: In this contribution, we present our participatory research approach, the methodology of “public problem-solving” and the ways in which it was deployed. We will show how productions and evaluations have been made accessible, while identifying the tensions at work. RESULTS: Two phases of research have been developed and deployed since 2015, based on an experimental “public problem-solving” methodology. Several collaborative productions have been developed, intended for various types of reception and made possible thanks to accessibility practices. They nevertheless highlight the tensions produced in the participatory processes. CONCLUSIONS: The epistemology that we have been collectively developing since 2015 radically aims to reduce social and cognitive inequalities by promoting experiential knowledge while perpetuating inequalities. Our ability to dialogue [14] is the basis for co-constructing a radical epistemology, which, while imperfect, is profoundly purposeful.


Asunto(s)
Personas con Discapacidad , Humanos , Derechos Humanos
5.
J Pediatr Gastroenterol Nutr ; 77(5): 618-622, 2023 11 01.
Artículo en Inglés | MEDLINE | ID: mdl-37668589

RESUMEN

OBJECTIVES: The Cow's Milk-related Symptom Score (CoMISS) is an awareness tool for evaluating cow's milk-related symptoms in otherwise healthy infants <1 year of age. This study assessed whether replacing the Bristol Stool Form Scale (BSFS) with the Brussels Infants and Toddlers Stool Scale (BITSS) in non-toilet-trained infants would modify the overall CoMiSS and change the clinical approach regarding potential cow's milk allergy. METHODS: Non-toilet-trained infants aged <13 months were assessed by CoMiSS using the 7 images from the BSFS (CoMiSS-BSFS) compared to the 4 images of stools from BITSS (CoMiSS-BITSS). The Wilcoxon signed-rank test and Pearson correlation coefficient were calculated. A post hoc analysis using identical tests was performed in subsets of CoMiSS-BSFS scores ≥10, ≥12, ≤5, and ≥6. RESULTS: Eight hundred forty-four pairwise scores were collected. Applying the Wilcoxon test over the complete dataset, the difference between CoMiSS-BSFS and CoMiSS-BITSS was statistically significant ( P < 0.001). However, there was no significant difference in the subsets with CoMiSS-BSFS ≥10, ≥12, and ≥6 ( P = 0.84, P = 0.48, and P = 0.81, respectively). The significant difference remained restricted to the group with CoMiSS-BSFS ≤5, considered at low risk for CM-related symptoms ( P < 0.001). CONCLUSION: Replacing BSFS with BITSS does not change the cutoff for awareness of possible CM-related symptoms and will not impact the use of CoMiSS in clinical practice. Changes in CoMiSS remained limited to the subgroup with a low risk for CM-related symptoms.


Asunto(s)
Hipersensibilidad a la Leche , Leche , Lactante , Femenino , Animales , Bovinos , Humanos , Hipersensibilidad a la Leche/complicaciones , Hipersensibilidad a la Leche/diagnóstico , Heces , Alérgenos
6.
J Pediatr Gastroenterol Nutr ; 76(3): e46-e60, 2023 03 01.
Artículo en Inglés | MEDLINE | ID: mdl-36399776

RESUMEN

Reducing the burden of noncommunicable diseases (NCDs) is one of the top priorities of public health policies worldwide. One of the recognized means of achieving this objective is to improve the diet quality. The Nutri-Score (N-S) is a [five-color-A, B, C, D, E letters] front-of-pack labeling logo intended to help consumers quickly identify the healthier prepackaged foods within a food category. Available studies have shown that the N-S is an efficient tool to achieve this aim in terms of consumers' awareness, perception, understanding, and purchasing and that its use may help to reduce the prevalence of NCDs. The N-S is currently implemented on a voluntary basis in 7 European countries and a discussion is underway within the European Commission to achieve a harmonized mandatory label. However, no study on the putative impact of the N-S on children's dietary patterns and health is available. The N-S is not applicable to infants' and young children's formulas and to specific baby foods, the compositions of which are already laid down in European Union regulations. The N-S does not replace age-appropriate dietary guidelines. As children consume an increasing number of adult type and processed foods, the relevance of the N-S for children should be evaluated considering the children's high specific requirements, especially in younger children. This is especially necessary for fitting fat and iron requirements, whereas protein-rich foods should be better framed. Moreover, efforts should be made to inform on how to use the N-S and in education on healthy diets.


Asunto(s)
Dieta , Alimentos Infantiles , Adulto , Lactante , Humanos , Niño , Preescolar , Etiquetado de Alimentos , Escolaridad , Alimentos Formulados , Valor Nutritivo
7.
Clin Gastroenterol Hepatol ; 20(11): 2474-2484.e3, 2022 11.
Artículo en Inglés | MEDLINE | ID: mdl-35181570

RESUMEN

BACKGROUND & AIMS: Substantial heterogeneity in terminology used for eosinophilic gastrointestinal diseases (EGIDs), particularly the catchall term "eosinophilic gastroenteritis," limits clinical and research advances. We aimed to achieve an international consensus for standardized EGID nomenclature. METHODS: This consensus process utilized Delphi methodology. An initial naming framework was proposed and refined in iterative fashion, then assessed in a first round of Delphi voting. Results were discussed in 2 consensus meetings, and the framework was updated and reassessed in a second Delphi vote, with a 70% threshold set for agreement. RESULTS: Of 91 experts participating, 85 (93%) completed the first and 82 (90%) completed the second Delphi surveys. Consensus was reached on all but 2 statements. "EGID" was the preferred umbrella term for disorders of gastrointestinal (GI) tract eosinophilic inflammation in the absence of secondary causes (100% agreement). Involved GI tract segments will be named specifically and use an "Eo" abbreviation convention: eosinophilic gastritis (now abbreviated EoG), eosinophilic enteritis (EoN), and eosinophilic colitis (EoC). The term "eosinophilic gastroenteritis" is no longer preferred as the overall name (96% agreement). When >2 GI tract areas are involved, the name should reflect all of the involved areas. CONCLUSIONS: This international process resulted in consensus for updated EGID nomenclature for both clinical and research use. EGID will be the umbrella term, rather than "eosinophilic gastroenteritis," and specific naming conventions by location of GI tract involvement are recommended. As more data are developed, this framework can be updated to reflect best practices and the underlying science.


Asunto(s)
Enteritis , Eosinofilia , Esofagitis Eosinofílica , Gastritis , Humanos , Consenso , Enteritis/diagnóstico , Enteritis/complicaciones , Gastritis/diagnóstico , Gastritis/complicaciones , Eosinofilia/diagnóstico , Eosinofilia/complicaciones , Esofagitis Eosinofílica/complicaciones
8.
Pediatr Allergy Immunol ; 33(10): e13856, 2022 10.
Artículo en Inglés | MEDLINE | ID: mdl-36282131

RESUMEN

Gastro-oesophageal reflux (GOR) and food allergy (FA) are common conditions, especially during the first 12 months of life. When GOR leads to troublesome symptoms, that affect the daily functioning of the infant and family, it is referred to as GOR disease (GORD). The role of food allergens as a cause of GORD remains controversial. This European Academy of Allergy and Clinical Immunology (EAACI) position paper aims to review the evidence for FA-associated GORD in young children and translate this into clinical practice that guides healthcare professionals through the diagnosis of suspected FA-associated GORD and medical and dietary management. The task force (TF) on non-IgE mediated allergy consists of EAACI experts in paediatric gastroenterology, allergy, dietetics and psychology from Europe, United Kingdom, United States, Turkey and Brazil. Six clinical questions were formulated, amended and approved by the TF to guide this publication. A systematic literature search using PubMed, Cochrane and EMBASE databases (until June 2021) using predefined inclusion criteria based on the 6 questions was used. The TF also gained access to the database from the European Society of Paediatric Gastroenterology and Hepatology working group, who published guidelines on GORD and ensured that all publications used within that position paper were included. For each of the 6 questions, practice points were formulated, followed by a modified Delphi method consisting of anonymous web-based voting that was repeated with modified practice points where required, until at least 80% consensus for each practice point was achieved. This TF position paper shares the process, the discussion and consensus on all practice points on FA-associated GORD.


Asunto(s)
Hipersensibilidad a los Alimentos , Reflujo Gastroesofágico , Lactante , Niño , Humanos , Preescolar , Reflujo Gastroesofágico/diagnóstico , Reflujo Gastroesofágico/terapia , Reflujo Gastroesofágico/etiología , Hipersensibilidad a los Alimentos/diagnóstico , Hipersensibilidad a los Alimentos/terapia , Hipersensibilidad a los Alimentos/complicaciones , Turquía , Brasil , Europa (Continente)
9.
J Pediatr Gastroenterol Nutr ; 72(3): 343-346, 2021 03 01.
Artículo en Inglés | MEDLINE | ID: mdl-32868668

RESUMEN

ABSTRACT: Pregnant and lactating women are continuously and ubiquitously exposed to numerous environmental pollutants from various sources including air, food, water, and occupational and household environments. The available evidence shows that pollutants are present in human milk and one of the emerging questions is what happens when the nursing infant is involuntarily exposed to contaminants through breastfeeding.The available literature does not currently provide a conclusive evidence of any consistent or clinically relevant health consequences in infants exposed to environment chemicals through breast milk. The available data strongly suggest that the benefits of breastfeeding outweigh the potential harmful effects of pollutants contained in human milk. The committee of nutrition of the French Pediatric Society strongly supports breastfeeding but also calls for public health actions to reduce the overall contamination level in the environment, to continue promoting breastfeeding, and to support research in this area.


Asunto(s)
Contaminantes Ambientales , Pediatría , Lactancia Materna , Niño , Contaminantes Ambientales/análisis , Contaminantes Ambientales/toxicidad , Femenino , Humanos , Lactante , Lactancia , Leche Humana/química , Embarazo , Salud Pública
10.
Allergy ; 75(1): 14-32, 2020 01.
Artículo en Inglés | MEDLINE | ID: mdl-31199517

RESUMEN

It is well-established that food proteins, such as egg, soya, cow's milk and wheat, are detectable in breastmilk for many hours or days after ingestion. Exposure to these proteins is important to the process of developing tolerance but can also sometimes elicit IgE-mediated and non-IgE-mediated allergic symptoms in breastfed infants. Non-IgE-mediated allergy, outside of food protein-induced allergic proctocolitis and eosinophilic oesophagitis, is not well understood, leading to variations in the diagnosis and management thereof. A primary objective of the European Academy for Allergy and Clinical Immunology is to support breastfeeding in all infants, including those with food allergies. A Task Force was established, to explore the clinical spectrum of non-IgE-mediated allergies, and part of its objectives was to establish diagnosis and management of non-IgE-mediated allergies in breastfed infants. Eight questions were formulated using the Patient, Intervention, Comparison, Outcome (PICO) system and Scottish Intercollegiate Guideline Network (SIGN) criteria for data inclusion, and consensus was achieved on practice points through the Delphi method. This publication aims to provide a comprehensive overview on this topic with practice points for healthcare professionals.


Asunto(s)
Lactancia Materna , Hipersensibilidad a los Alimentos/diagnóstico , Hipersensibilidad a los Alimentos/terapia , Enfermedades Gastrointestinales/diagnóstico , Enfermedades Gastrointestinales/terapia , Femenino , Hipersensibilidad a los Alimentos/complicaciones , Enfermedades Gastrointestinales/inmunología , Humanos , Lactante , Recién Nacido , Masculino
11.
Acta Paediatr ; 109(3): 471-480, 2020 03.
Artículo en Inglés | MEDLINE | ID: mdl-31529540

RESUMEN

AIM: To summarise the results from four clinical trials assessing the efficacy and safety of a thickening complex in the management of regurgitation in infants. METHODS: Infants (n = 392) younger than 5 months presenting with at least five regurgitations per day were recruited in four open-label, interventional, single-group, multi-centric clinical trials sharing an identical design. The efficacy of four different formulae thickened with different thickening complexes of pectin, starch and locust bean gum, was evaluated on regurgitation at days 3, 14 and 90, and stools and growth at days 14 and 90. RESULTS: The daily number of regurgitation episodes was significantly reduced at days 3 and 14 vs baseline in all studies (P < .001), with the largest decrease with the formula having the highest pectin content (study 1; P < .001). In all studies, growth was within normal range. A trend towards stool normalisation for consistency was observed in three studies at day 90 vs baseline and was significant in study 1 (P < .001). Stool frequency was unchanged by the interventions. CONCLUSION: The four tested thickened formulae reduced regurgitation and were proven to be safe. The formula with the largest amount of pectin and lowest starch content showed the best efficacy.


Asunto(s)
Reflujo Gastroesofágico , Pectinas , Humanos , Lactante , Fórmulas Infantiles , Almidón , Vómitos
12.
Gastroenterology ; 155(4): 1022-1033.e10, 2018 10.
Artículo en Inglés | MEDLINE | ID: mdl-30009819

RESUMEN

BACKGROUND & AIMS: Over the last decade, clinical experiences and research studies raised concerns regarding use of proton pump inhibitors (PPIs) as part of the diagnostic strategy for eosinophilic esophagitis (EoE). We aimed to clarify the use of PPIs in the evaluation and treatment of children and adults with suspected EoE to develop updated international consensus criteria for EoE diagnosis. METHODS: A consensus conference was convened to address the issue of PPI use for esophageal eosinophilia using a process consistent with standards described in the Appraisal of Guidelines for Research and Evaluation II. Pediatric and adult physicians and researchers from gastroenterology, allergy, and pathology subspecialties representing 14 countries used online communications, teleconferences, and a face-to-face meeting to review the literature and clinical experiences. RESULTS: Substantial evidence documented that PPIs reduce esophageal eosinophilia in children, adolescents, and adults, with several mechanisms potentially explaining the treatment effect. Based on these findings, an updated diagnostic algorithm for EoE was developed, with removal of the PPI trial requirement. CONCLUSIONS: EoE should be diagnosed when there are symptoms of esophageal dysfunction and at least 15 eosinophils per high-power field (or approximately 60 eosinophils per mm2) on esophageal biopsy and after a comprehensive assessment of non-EoE disorders that could cause or potentially contribute to esophageal eosinophilia. The evidence suggests that PPIs are better classified as a treatment for esophageal eosinophilia that may be due to EoE than as a diagnostic criterion, and we have developed updated consensus criteria for EoE that reflect this change.


Asunto(s)
Técnicas de Diagnóstico del Sistema Digestivo/normas , Esofagitis Eosinofílica/diagnóstico , Gastroenterología/normas , Inhibidores de la Bomba de Protones/administración & dosificación , Algoritmos , Consenso , Esofagitis Eosinofílica/tratamiento farmacológico , Humanos , Valor Predictivo de las Pruebas , Pronóstico , Inhibidores de la Bomba de Protones/efectos adversos
13.
Pediatr Allergy Immunol ; 28(2): 114-123, 2017 03.
Artículo en Inglés | MEDLINE | ID: mdl-27590735

RESUMEN

A large number of studies investigating various biomarkers for allergy have been published over the past decades. The aim of this review was to evaluate these biomarkers on their diagnostic and/or predictive value. To this date, no single or specific biomarker for allergy has been identified. As allergy is not one disease, but a collection of a number of allergic conditions, it is more plausible a combination of clinical history, clinical readouts, and diagnostic markers will be needed.


Asunto(s)
Asma/diagnóstico , Biomarcadores/sangre , Dermatitis Atópica/diagnóstico , Esofagitis Eosinofílica/diagnóstico , Hipersensibilidad a los Alimentos/diagnóstico , Rinitis Alérgica/diagnóstico , Alérgenos/inmunología , Animales , Niño , Humanos , Inmunoglobulina E/metabolismo , Pruebas Cutáneas
14.
Acta Paediatr ; 106(12): 2025-2030, 2017 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-28667775

RESUMEN

AIM: This French study assessed a quick, noninvasive, immuno-chromatographic, Helicobacter pylori (H. pylori) stool antigen test for detecting infections in children. METHODS: We enrolled 158 children, with a median age of 8.5 years (range eight months to 17 years), with digestive symptoms suggesting upper gastrointestinal tract disease. Upper digestive endoscopy was performed with gastric biopsy specimens for histology, a rapid urease test, culture test and quantitative real-time polymerase chain reaction. The H. pylori stool antigen test was performed twice for each child and the results were compared to the reference method. RESULTS: The reference methods showed that 23 (14.6%) of the 158 children tested were H. pylori positive. The H. pylori stool antigen test showed 91.3% sensitivity, with a 95% confidence interval (95% CI) of 86.9-95.6 and 97% specificity (95% CI 94.3-99.6), 30.84 positive likelihood ratio and 0.09 negative likelihood ratio. The test accuracy was 96.2% (95% CI 93.2-99.1). The two blinded independent observers produced identical H. pylori stool antigen test results and the Kappa coefficient for the H. pylori stool antigen test was one. CONCLUSION: The H. pylori stool antigen test was found to be a consistent, reliable, quick and specific test for detecting the H. pylori infection in children.


Asunto(s)
Antígenos Bacterianos/análisis , Cromatografía de Afinidad/métodos , Heces/química , Infecciones por Helicobacter/diagnóstico , Helicobacter pylori/inmunología , Helicobacter pylori/aislamiento & purificación , Adolescente , Niño , Preescolar , Femenino , Infecciones por Helicobacter/inmunología , Infecciones por Helicobacter/microbiología , Humanos , Lactante , Masculino , Reproducibilidad de los Resultados , Sensibilidad y Especificidad , Factores de Tiempo
15.
JAMA ; 318(18): 1798-1809, 2017 11 14.
Artículo en Inglés | MEDLINE | ID: mdl-29136445

RESUMEN

Importance: Epicutaneous immunotherapy may have potential for treating peanut allergy but has been assessed only in preclinical and early human trials. Objective: To determine the optimal dose, adverse events (AEs), and efficacy of a peanut patch for peanut allergy treatment. Design, Setting, and Participants: Phase 2b double-blind, placebo-controlled, dose-ranging trial of a peanut patch in peanut-allergic patients (6-55 years) from 22 centers, with a 2-year, open-label extension (July 31, 2012-July 31, 2014; extension completed September 29, 2016). Patients (n = 221) had peanut sensitivity and positive double-blind, placebo-controlled food challenges to an eliciting dose of 300 mg or less of peanut protein. Interventions: Randomly assigned patients (1:1:1:1) received an epicutaneous peanut patch containing 50 µg (n = 53), 100 µg (n = 56), or 250 µg (n = 56) of peanut protein or a placebo patch (n = 56). Following daily patch application for 12 months, patients underwent a double-blind, placebo-controlled food challenge to establish changes in eliciting dose. Main Outcomes and Measures: The primary efficacy end point was percentage of treatment responders (eliciting dose: ≥10-times increase and/or reaching ≥1000 mg of peanut protein) in each group vs placebo patch after 12 months. Secondary end points included percentage of responders by age strata and treatment-emergent adverse events (TEAEs). Results: Of 221 patients randomized (median age, 11 years [quartile 1, quartile 3: 8, 16]; 37.6% female), 93.7% completed the trial. A significant absolute difference in response rates was observed at month 12 between the 250-µg (n = 28; 50.0%) and placebo (n = 14; 25.0%) patches (difference, 25.0%; 95% CI, 7.7%-42.3%; P = .01). No significant difference was seen between the placebo patch vs the 100-µg patch. Because of statistical testing hierarchical rules, the 50-µg patch was not compared with placebo. Interaction by age group was only significant for the 250-µg patch (P = .04). In the 6- to 11-year stratum, the response rate difference between the 250-µg (n = 15; 53.6%) and placebo (n = 6; 19.4%) patches was 34.2% (95% CI, 11.1%-57.3%; P = .008); adolescents/adults showed no difference between the 250-µg (n = 13; 46.4%) and placebo (n = 8; 32.0%) patches: 14.4% (95% CI, -11.6% to 40.4%; P = .40). No dose-related serious AEs were observed. The percentage of patients with 1 or more TEAEs (largely local skin reactions) was similar across all groups in year 1: 50-µg patch = 100%, 100-µg patch = 98.2%, 250-µg patch = 100%, and placebo patch = 92.9%. The overall median adherence was 97.6% after 1 year; the dropout rate for treatment-related AEs was 0.9%. Conclusions and Relevance: In this dose-ranging trial of peanut-allergic patients, the 250-µg peanut patch resulted in significant treatment response vs placebo patch following 12 months of therapy. These findings warrant a phase 3 trial. Trial Registration: clinicaltrials.gov Identifier: NCT01675882.


Asunto(s)
Alérgenos/administración & dosificación , Arachis/inmunología , Desensibilización Inmunológica/métodos , Hipersensibilidad al Cacahuete/terapia , Administración Cutánea , Adolescente , Adulto , Niño , Relación Dosis-Respuesta Inmunológica , Método Doble Ciego , Femenino , Humanos , Masculino , Persona de Mediana Edad
16.
BMC Pediatr ; 16: 96, 2016 07 18.
Artículo en Inglés | MEDLINE | ID: mdl-27430981

RESUMEN

BACKGROUND: In case of cow's milk allergy (CMA), pediatric guidelines recommend for children the use of extensively hydrolyzed formulas (eHFs) as elimination diet. According to the American Academy of Pediatrics, the hypoallergenicity of each specific eHF should be tested in subjects with CMA. METHODS: A prospective, multicenter trial was performed to assess the tolerance/hypoallergenicity of a thickened casein-based eHF (eHCF, Allernova AR®, United Pharmaceuticals, France) in infants aged <12 months with CMA proven by a double-blind placebo-controlled food challenge. Its efficacy, measured through allergy symptoms monitoring and Cow's Milk-related Symptom Score (CoMiSS) calculation, and safety were evaluated during a 4-month feeding period. Growth z-scores were computed based on WHO anthropometric data. RESULTS: Thirty infants (mean age: 4.8 ± 3.0 months) with CMA proven by a DBPCFC tolerated the eHCF during the 4-month study. The CoMiSS, crying and regurgitation scores significantly decreased by 4.2 ± 4.0, 0.9 ±1.2 and 0.7 ± 1.1 respectively, after 14 days of feeding (p < 0.001). The Scoring Atopic Dermatitis index, of 33.2 ± 14.8 at inclusion in 9 patients, significantly decreased by 15.5 ± 6.7 and 21.1 ± 11.2, after 14 and 45 days of feeding, respectively (p < 0.001). The percentage of infants having normal stool consistency (soft or formed stools) significantly improved from 66.7 % (20/30) at inclusion to 90.0 % (27/30) after 14 days of feeding (p = 0.020). The growth z-scores, negative at study inclusion, significantly improved over the 4-month study. No adverse event was related to the eHCF. CONCLUSION: The thickened eHCF was tolerated by more than 90 % of included allergic infants with 95 % confidence interval and can therefore be considered as hypoallergenic in accordance with current guidelines. The improvement of growth indices and absence of related adverse events confirmed its safety. Results of this trial back the use of the tested thickened eHCF as an efficient and safe alternative in children with CMA. TRIAL REGISTRATION: ClinicalTrials.gov, number NCT02351531 , registered on 27 January 2015.


Asunto(s)
Estatura , Caseínas , Fórmulas Infantiles , Hipersensibilidad a la Leche/dietoterapia , Aumento de Peso , Caseínas/efectos adversos , Método Doble Ciego , Femenino , Estudios de Seguimiento , Humanos , Lactante , Fórmulas Infantiles/efectos adversos , Masculino , Hipersensibilidad a la Leche/diagnóstico , Estudios Prospectivos , Resultado del Tratamiento
17.
J Allergy Clin Immunol ; 135(6): 1546-57.e4, 2015 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-25583102

RESUMEN

BACKGROUND: Allergy to cow's milk increases the risk of sensitization to other foods in young children. OBJECTIVES: We sought to evaluate the effect of early epicutaneous immunotherapy (EPIT) on further sensitization to peanut or house dust mite (HDM) in a murine model of sensitization to cow's milk. METHODS: BALB/c mice orally sensitized to milk were epicutaneously treated with a Viaskin patch (DBV Technologies) loaded with milk proteins for 8 weeks. Mice were then sensitized to peanut or HDM. After sensitization to peanut, mice were exposed to a peanut regimen known to induce eosinophilic esophageal inflammation. After sensitization to HDM, mice were challenged with aerosols to HDM, and airway hyperresponsiveness was evaluated by using plethysmography. Humoral response was also analyzed. The role of regulatory T (Treg) cells was evaluated by adoptively transferring Treg cells from milk EPIT-treated mice to naive mice before sensitization to peanut. Protection against anaphylaxis was also investigated. Methylation of the promoter region of transcription factors was analyzed by using PCR assays. RESULTS: In milk-sensitized mice specific EPIT prevented further sensitization to peanut or HDM. EPIT significantly modified the humoral response, reduced TH2 cytokine levels, decreased eosinophilic esophageal infiltration, and suppressed airway hyperresponsiveness. The protective effect was sustained over 2 months. Moreover, the adoptive transfer of milk EPIT Treg cells completely prevented sensitization to peanut and peanut-induced anaphylaxis. Milk EPIT enhanced methylation of the GATA-3 promoter region. CONCLUSIONS: Our results showed that EPIT influences the natural history of allergy and reduces the risk of further sensitization through a Treg cell-dependent mechanism.


Asunto(s)
Alérgenos/inmunología , Hiperreactividad Bronquial/prevención & control , Protección Cruzada , Hipersensibilidad a la Leche/terapia , Proteínas de la Leche/inmunología , Hipersensibilidad al Cacahuete/prevención & control , Traslado Adoptivo , Alérgenos/administración & dosificación , Alérgenos/aislamiento & purificación , Animales , Arachis/química , Arachis/inmunología , Hiperreactividad Bronquial/genética , Hiperreactividad Bronquial/inmunología , Hiperreactividad Bronquial/fisiopatología , Niño , Citocinas/genética , Citocinas/inmunología , Metilación de ADN , Desensibilización Inmunológica/métodos , Modelos Animales de Enfermedad , Eosinófilos/efectos de los fármacos , Eosinófilos/inmunología , Eosinófilos/patología , Femenino , Factor de Transcripción GATA3/genética , Factor de Transcripción GATA3/inmunología , Regulación de la Expresión Génica/efectos de los fármacos , Humanos , Ratones , Ratones Endogámicos BALB C , Hipersensibilidad a la Leche/genética , Hipersensibilidad a la Leche/inmunología , Hipersensibilidad a la Leche/fisiopatología , Proteínas de la Leche/administración & dosificación , Proteínas de la Leche/aislamiento & purificación , Hipersensibilidad al Cacahuete/genética , Hipersensibilidad al Cacahuete/inmunología , Hipersensibilidad al Cacahuete/fisiopatología , Pletismografía , Regiones Promotoras Genéticas , Pyroglyphidae/química , Pyroglyphidae/inmunología , Piel/efectos de los fármacos , Piel/inmunología , Piel/patología , Linfocitos T Reguladores/efectos de los fármacos , Linfocitos T Reguladores/inmunología , Linfocitos T Reguladores/patología , Linfocitos T Reguladores/trasplante , Balance Th1 - Th2/efectos de los fármacos
18.
Br J Nutr ; 113(7): 1102-12, 2015 Apr 14.
Artículo en Inglés | MEDLINE | ID: mdl-25781481

RESUMEN

Children with cows' milk protein allergy (CMPA) are at risk of insufficient length and weight gain, and the nutritional efficacy of hypo-allergenic formulas should be carefully assessed. In 2008, a trial assessed the impact of probiotic supplementation of an extensively hydrolysed casein-based formula (eHCF) on acquisition of tolerance in 119 infants with CMPA. First analysis of the study results showed that the studied formula allowed improvement of food-related symptoms. The scoring of atopic dermatitis (SCORAD) index was assessed at randomisation and after 6 months of feeding. A post hoc analysis was performed using WHO growth software's nutritional survey module (WHO Anthro version 3.2.2). All infants who were fed the study formula tolerated it well. The SCORAD index significantly improved from randomisation to 6 months of feeding with the study formula. Anthropometric data indicated a significant improvement in the weight-for-age, length-for-age and weight-for-length z scores, as well as in the restoration of normal BMI. The probiotic supplementation did not show any impact on these parameters. The present data showed that this eHCF was clinically tolerated and significantly improved the SCORAD index and growth indices.


Asunto(s)
Caseínas/uso terapéutico , Desarrollo Infantil , Alimentos Especializados , Tolerancia Inmunológica , Fórmulas Infantiles/química , Hipersensibilidad a la Leche/dietoterapia , Bifidobacterium/inmunología , Índice de Masa Corporal , Caseínas/efectos adversos , Dermatitis Atópica/epidemiología , Dermatitis Atópica/etiología , Dermatitis Atópica/prevención & control , Método Doble Ciego , Femenino , Estudios de Seguimiento , Alimentos Especializados/efectos adversos , Alimentos Especializados/microbiología , Humanos , Lactante , Fenómenos Fisiológicos Nutricionales del Lactante , Lacticaseibacillus casei/inmunología , Perdida de Seguimiento , Masculino , Hipersensibilidad a la Leche/inmunología , Hipersensibilidad a la Leche/fisiopatología , Países Bajos/epidemiología , Pacientes Desistentes del Tratamiento , Probióticos/uso terapéutico , Riesgo , Delgadez/epidemiología , Delgadez/etiología , Delgadez/prevención & control
19.
J Pediatr Gastroenterol Nutr ; 61(3): 307-12, 2015 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-25793904

RESUMEN

OBJECTIVES: The aim of the study was to assess the usefulness of gastric biopsy-based quantitative real-time polymerase chain reaction (qPCR) for the detection of Helicobacter pylori infection and the identification of clarithromycin-resistant strains in children. METHODS: A gastric biopsy-based qPCR for the detection of H pylori infection and the identification of clarithromycin-resistant strains in children was evaluated in 62 children with infection and 341 children without infection. H pylori infection was considered by the "reference method" when culture was positive for both histology and rapid urease test (RUT). Results were compared with those obtained using the qPCR. RESULTS: The reference method versus H pylori qPCR positivity showed 95% confidence interval sensitivity 100% versus 100%, specificity 93.2% (86.9-99.4) versus 100%, positive predictive value 59.7% (47.4-71.9) versus 100%, negative predictive value 100% versus 100%, and, finally, test accuracy of 59.6% (47.3-71.8) versus 100%. Sixty-two children were found to be H pylori positive, based on the qPCR results. Among those, 31 children had both positive qPCR and culture with concordant antimicrobial susceptibility testing results, whereas 31 children had negative culture and positive qPCR. The qPCR showed a bacterial load ≥10 copies per milliliter when culture, histology, and RUT were all positive (29/31 children) versus <10 copies per milliliter when culture, histology, and RUT were all negative (25/31 children). Grades 2 and 3 histological gastritis were associated with a bacterial load ≥10 copies per milliliter for 28/35 of children versus 27/27 of grade 0 to 1 <10 copies per milliliter. CONCLUSIONS: H pylori qPCR positivity is a more precise test than the routine culture, histology, RUT alone and allows detecting low bacterial loads.


Asunto(s)
Carga Bacteriana/métodos , Mucosa Gástrica/microbiología , Infecciones por Helicobacter/diagnóstico , Helicobacter pylori/aislamiento & purificación , Reacción en Cadena en Tiempo Real de la Polimerasa/métodos , Adolescente , Carga Bacteriana/estadística & datos numéricos , Biopsia , Niño , Preescolar , ADN Bacteriano/análisis , Femenino , Mucosa Gástrica/patología , Gastritis/microbiología , Infecciones por Helicobacter/microbiología , Helicobacter pylori/efectos de los fármacos , Helicobacter pylori/fisiología , Humanos , Lactante , Masculino , Valor Predictivo de las Pruebas , Reproducibilidad de los Resultados , Sensibilidad y Especificidad , Ureasa/análisis
20.
J Pediatr Gastroenterol Nutr ; 61(4): 456-63, 2015 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-25844709

RESUMEN

OBJECTIVES: Amino acid-based formulas (AAFs) are recommended for children with cow's-milk allergy (CMA) failing to respond to extensively hydrolysed formulas (eHFs). We evaluated the effects of a new thickened AAF (TAAF, Novalac), containing a pectin-based thickener, and a reference AAF (RAAF, Neocate) on allergy symptoms and safety, through blood biochemistry analysis and growth. METHODS: Infants (ages < 18 months) with CMA symptoms failing to respond to eHFs were randomised in a double-blind manner to receive TAAF or RAAF for 3 months. All of the infants were then fed TAAF for 3 additional months. Paediatric visits occurred at 1, 3, and 6 months. Blood samples were collected at inclusion and 3 months. RESULTS: Results at 1 month were previously described. The 75 infants with proven CMA and eHF intolerance tolerated their allocated formula. At 3 months, the dominant allergic symptom had disappeared in 76.2% of the infants with TAAF and in 51.5% of the infants with RAAF (P = 0.026). The Scoring Atopic Dermatitis Index significantly improved more with TAAF than with RAAF (-27.3 ±â€Š2.3 vs -20.8 ±â€Š2.2, P = 0.048). Of the infants, 92.9% had normal stools (soft or formed consistency) with TAAF vs 75.8% with RAAF (P = 0.051). More infants in TAAF group had better quality of nighttime sleep (P = 0.036) and low frequency of irritability signs (P < 0.001). With both formulas, all of the biochemical parameters were within normal ranges. There were no differences between the 2 groups in any of the anthropometric z scores. CONCLUSIONS: The new TAAF was tolerated by all of the infants with CMA and intolerance to eHFs. Anthropometric and clinical data showed that both formulas were safe.


Asunto(s)
Aminoácidos/administración & dosificación , Desarrollo Infantil , Conducta del Lactante , Fórmulas Infantiles , Fenómenos Fisiológicos Nutricionales del Lactante , Hipersensibilidad a la Leche/dietoterapia , Hidrolisados de Proteína/efectos adversos , Aminoácidos/efectos adversos , Aminoácidos/análisis , Aminoácidos/química , Bélgica , Biomarcadores/análisis , Carbohidratos/efectos adversos , Carbohidratos/química , Estudios de Cohortes , Grasas de la Dieta/efectos adversos , Fibras de la Dieta/administración & dosificación , Fibras de la Dieta/análisis , Método Doble Ciego , Neurotoxina Derivada del Eosinófilo/análisis , Heces/química , Heces/microbiología , Femenino , Francia , Microbioma Gastrointestinal/inmunología , Humanos , Lactante , Fórmulas Infantiles/química , Masculino , Hipersensibilidad a la Leche/inmunología , Hipersensibilidad a la Leche/microbiología , Hipersensibilidad a la Leche/fisiopatología , Pectinas/química , Viscosidad
SELECCIÓN DE REFERENCIAS
DETALLE DE LA BÚSQUEDA