Dermatitis herpetiforme y enfermedad celíaca: del intestino a la piel / Dermatitis herpetiformis and celiac disease

Dermatitis herpetiformis is an autoimmune chronic blistering disease, considered a skin manifestation of celiac disease. Being both conditions multifactorial, they share some genetic traits and pathogenic mechanisms, which are responsible for the typical skin and gastrointestinal manifestations. In dermatitis herpetiformis, skin and other lesions heal after gluten-free diet and reappear shortly after its reintroduction to complete diet. Prevalence of celiac disease is 1% in the population, and approximately 13% of patients with the disease develop dermatitis herpetiformis. Diagnosis of celiac disease has progressively increased in recent decades, while clinical manifestations become more and more diverse. Given the current high frequency of skin lesions in celiac patients, in this review we update relevant aspects of the epidemiology, pathogenesis, clinical presentations, treatment and follow up of dermatitis herpetiformis, as a contribution to improve the management of both conditions.

Calidad de vida relacionada a la salud en niños y adolescentes con enfermedad celiaca / Health related quality of life in celiac children and adolescents

INTRODUCCIÓN: La dieta libre de gluten (DLG) de por vida es el tratamiento de la enfermedad celiaca (EC). Sien do una dieta restrictiva, impone limitaciones en la vida diaria y puede repercutir en la calidad de vida relacionada a la salud (CVRS). Nuestro objetivo fue evaluar la CVRS de pacientes celíacos en DLG, la concordancia entre pacientes-cuidador/a, y comparar la situación local con experiencias internacionales. PACIENTES Y MÉTODO: Se evaluaron pacientes de 8-18 años en DLG > 6 meses (37 diadas). Se les aplicó el "Celiac Disease Dutch Questionnaire" (CDDUX), que evalúa en 2 cuestio narios (uno al niño y otro al cuidador/padre), tres áreas: i) el tener EC, ii) la comunicación con otros y iii) la dieta. Se evaluó la confiabilidad, la dimensionalidad, y la consistencia interna mediante el coeficiente de Cronbach. RESULTADOS: Más del 50% de los pacientes y cuidadores reportan bien/ muy bien en las sub-escalas "tener enfermedad" y "dieta libre de gluten"; "comunicación" mostró altos porcentajes de mal/muy mal. No hubo diferencias significativas en la CVRS percibida por pacientes y cuidadores (global y sub-escala). Sí las hubo al analizar las respuestas de las/los cuida dores, que asignaron mejores puntajes a los pacientes varones (p = 0,022) y a quienes seguían DLG de manera no estricta (p = 0,049). La concordancia entre pacientes y cuidadores fue 39,2%. DISCUSIÓN: La CVRS de los pacientes evaluados aparece como satisfactoria, de las mejores reportadas en latinoamericana. El manejo de "tener EC" y la necesidad de mantener una "DLG" influyen menos en la CVRS que el tener que comunicarse con otros acerca de la enfermedad. La concordancia encontrada sugiere que la percepción del cuidador/a no refleja necesariamente lo que percibe el paciente.

INTRODUCTION: The lifelong gluten-free diet (GFD) is the treatment of celiac disease (CD). Being a restrictive diet, it limits daily life and can impact on the health-related quality of life (HRQoL). Our objective was to assess HRQoL of celiac patients on a GFD, the concordance between patients - caregivers, and to compare the local results with international data. PATIENTS AND METHOD: Patients aged 8-18 years on a GFD for >6months (37 dyads) were evaluated. The "Celiac Disease Dutch Questionnaire" (CDDUX) was applied, which evaluates in two questionnaires (one applied to the child and another one to the caregiver/parent), three areas: i) having CD, ii) communication with others, and iii) the diet. Reliability, dimensionality, and internal consistency were assessed using the Cronbach coefficient. RESULTS: More than 50% of patients and caregivers reported "well/very well" on sub-scales "having CD" and "GFD"; "communication" showed high percentages of "bad/very bad". Although there were no significant differences in HRQoL (global and subscale) perceived by patients and caregivers, there were when analyzing the answers of caregivers, who assigned better scores to boys (p=0.022) and to patients maintaining a non-strict GFD (p=0.049). Concordance between patients and caregivers was 39.2%. DISCUSSION: HRQoL of the assessed celiac children was satisfactory, among the best repor ted in Latin America. "Having CD" and the need for a "GFD" have less influence on HRQoL than "communication" with others about the disease. The concordance found suggests that the caregivers' perception does not necessarily reflect what patients perceive.

Consumo de mono, di, oligo sacáridos y polioles fermentables (FODMAPs), una nueva fuente de sintomatología gastrointestinal / Fermentable oligosaccharides, disaccharides, monosaccharides and polyols (FODMAPS)

An increasing number of children and adults are currently suffering symptoms due to FODMAP (Fermentable Oligosaccharides, Disaccharides, Monosaccharides and Polyols) consumption. These carbohydrates are poorly digested in the human gastrointestinal tract, exerting an osmotic effect in the small intestine. In the colon, they become substrates to the microbiota. Microbial fermentation explains symptoms such as abdominal distention (postprandial fullness), bloating and flatulence, abdominal pain and loose feces or diarrhea. There are no standardized methods to measure them in daily clinical work. Daily tolerance and the no-effect doses are unclear. How to diagnose and treat FODMAP associated symptoms is also controversial. In this review, we aim to define FODMAP, their associated symptoms and the current techniques for assessing them. The low-FODMAP diet is described and how to implement it.

Caracterización de la enfermedad celiaca en niños atendidos en hospitales públicos chilenos / Characterization of celiac disease in chilean public hospitals

Resumen: Introducción: La prevalencia global de enfermedad celíaca (EC) es ~1% de la población. En Chile, la Encuesta Nacional de Salud 2009-2010 mostró una prevalencia serológica en mayores de 15 años de 0,76% (IgA-TTG2), que en Concepción correspondió a 0,6%. Objetivo: Determinar las caracte rísticas clínicas, de búsqueda, diagnóstico, tratamiento y seguimiento de la EC en los dos hospitales públicos de Concepción con servicio de Gastroenterología. Pacientes y Método: Estudio descriptivo, se recogieron datos de las fichas electrónicas (código CIE10) y clínicas de menores de 18 años estu diados por EC entre 2010 - 2016 provenientes de dos hospitales públicos de la ciudad de Concepción, Chile. Se identificaron los casos cuyo protocolo diagnóstico cumplía con los criterios ESPGHAN 2012 (confirmación con biopsia intestinal), 207 de 216 pacientes identificados cumplían los criterios de inclusión. El estado nutricional se clasificó según grupo etario (menores de 5 años OMS 2006; en los niños entre 5 y 18 años OMS 2007). Se calculó el Z-score (Z), a través del software WHO Anthro (en menores de 5 años) y WHO Anthro Plus (entre 5-18 años). Los anticuerpos antiendomisio se evaluaron mediante inmuno fluorescencia en cortes de esófago de mono; los anticuerpos antitrans- glutaminasa IgA e IgG a través ELISA; e IgA en sangre mediante ELISA. Resultados: Se confirmó EC por biopsias duodenales en 33,8%. IgA-TTG estuvo registrada en 70% e IgG-TTG en 52,9%, aunque solo dos pacientes tenían deficiencia de IgA. Los motivos de consulta preponderantes fueron gas trointestinales (80%) y/o derivación por un endocrinólogo (45,7%). La principal presentación clínica fue gastrointestinal, con diarrea (71,4%). El 17,1% presentaba Síndrome de Down (SD), 11,4% talla baja y 5,7% diabetes mellitus 1. Al diagnóstico, la relación obesidad: desnutrición (Z-score IMC) fue 2:1 y 6,8% de los pacientes eran obesos. Al año post-diagnóstico, en 26 pacientes celíacos sin SD la frecuencia de estado nutricional eutrófico disminuyó de 65,4% a 42,3%, aumentando el sobrepeso de 23,1 a 34,6% y la obesidad de 0 a 7,7%. Conclusiones: En Concepción, la especialidad de endo crinología efectúa una significativa y exitosa búsqueda activa, siendo responsable de 47,3% de los diagnósticos. La alta proporción de pacientes con sobrepeso/obesidad concuerda con el fenómeno descrito actualmente en Chile y otros países.

Abstract: Introduction: The worldwide prevalence of celiac disease (CD) is ~1% of the population. In Chile, the National Health Survey 2009-2010 showed a serological prevalence in individuals older than 15 years of 0.76% (IgA-tTG2), which corresponded in Concepción to 0.6%. Objective: Determine cli nical characteristics, search, diagnosis, treatment and follow-up of CD in the two public hospitals in Concepción that have a Gastroenterology Department. Patients and Method: Descriptive study. Data were collected from electronic medical records (CIE10 code) and medical records of patients youn ger than 18 years of age, assessed for CD during 2010 - 2016 from two public hospitals in the city of Concepción, Chile. Cases whose diagnostic protocol met the ESPGHAN 2012 criteria (confirmation with intestinal biopsy), 207 out of 216 identified patients met the inclusion criteria. The nutritional status was classified according to age group (in children under five years old by WHO 2006 and in children between five and 18 years old by WHO 2007). The Z-score (Z) was calculated using the WHO Anthro software (in children under five years old) and WHO Anthro Plus software (in those between five and 18 years old). Antiendomysial antibodies were assessed by immunofluorescence test in cuts of the esophagus of mono, IgA and IgG anti-transglutaminase antibodies via ELISA, as well as serum IgA. Results: CD was confirmed by duodenal biopsies in 33.8% of the patients. IgA-tTG was identified in 70% and IgG-tTG in 52.9%, although only two patients had IgA deficiency. The main reasons for consultation were gastrointestinal (80%) and/or referral by an endocrinologist (45.7%). The main clinical presentation was gastrointestinal, with diarrhea (71.4%). 17.1% of the patients had Down syndrome (DS), 11.4% short stature, and 5.7% had type 1 diabetes mellitus. At diagnosis, the obesitymalnutrition ratio (Z-score BMI) was 2:1 and 6.8% of the patients were obese. One year after diagnosis, in 26 patients without DS, the frequency of eutrophic patients decreased from 65.4% to 42.3%, increasing overweight from 23.1% to 34.6% and obesity from 0 to 7.7%. Conclusions: In Con cepción, endocrinologists conduct a significant and successful active search of CD, being responsible for 47.3% of the diagnoses. The high proportion of overweight/obese patients is consistent with the phenomenon currently described in Chile and other countries.

Percepción de estar haciendo bien la dieta sin gluten y adherencia al tratamiento en pacientes pediátricos con enfermedad celíaca / Perception of following gluten-free diet and adherence to treatment in pediatric patients with celiac disease

INTRODUCCIÓN: La enfermedad celíaca (EC) es una enteropatía crónica mediada inmunológicamente que afecta ~1% de la población. La dieta libre de gluten (DLG) es su único tratamiento y la principal limitante de su eficacia es la falta de adherencia. OBJETIVOS: Evaluar factores que influyen en la adherencia a la DLG de pacientes celiacos pediátricos. Medir la concordancia entre la serología y un cuestionario nutricional de adherencia. PACIENTES Y MÉTODO: Estudio transversal en celiacos menores de 18 años, en DLG por más de 6 meses. Se aplicó un cuestionario con 5 grupos de factores (OMS). Se registraron características clínicas, dieta de los últimos 3 meses, percepción (de padres/cuidadores, y del paciente adolescente) de la DLG; el conocimiento de los alimentos permitidos y disponibles en el país de la simbología "libre de gluten", y si lee/no lee ingredientes de un alimento antes de comprarlo. Se aplicó un score dando un punto a cada respuesta correcta (0-4). A un subgrupo se le aplicó el cuestionario de adherencia a la DLG de Biagi. Se midió EMA y TTG dentro de las 2 semanas posteriores a la entrevista. Se usó índice Kappa para evaluar la concordancia entre TTG y encuesta nutricional de adherencia; Chi cuadrado para la asociación entre los factores evaluados y los resultados de EMA y TTG, y Odds ratio como medida de asociación. Se aplicó un modelo de regresión logística a los factores asociados a los resultados de los exámenes de anticuerpos EMA y TTG (positivo-negativo). Se definió "buena adherencia a la DLG" cuando EMA y TTG fueron negativos. Resultados: De 65 pacientes; 44% y 30,1% adherían correctamente a la DLG según medición de anticuerpos (TTG y EMA) y el cuestionario, respectivamente. La "edad de inicio de la enfermedad" (p = 0,049), "percepción de estar realizando bien la DLG" (p = 0,002) y la "conducta del paciente frente a alimentos en reuniones sociales" (p = 0,005), se asociaron significativamente con adherencia a DLG. Hubo concordancia entre los exámenes serológicos y el cuestionario de adherencia (p = 0,0001). DISCUSIÓN: La adherencia fue menor que la reportada en la literatura. La intervención de variables asociadas a adherencia identificadas, podría ayudar al mejor seguimiento de los pacientes, especialmente en aquellos quienes por diversos motivos no puedan realizarse exámenes serológicos con la frecuencia adecuada.

INTRODUCTION: Celiac disease (CD) is a chronic immune-mediated enteropathy present in ~1% of population. Gluten-free diet (GFD) is the only treatment for this condition and the main limitation of its efficacy is the lack of adherence. OBJECTIVE: To assess factors influencing adherence to GFD in pediatric patients and measure the concordance between serological results and a nutritional adhe rence questionnaire. PATIENTS AND METHODS: celiac patients younger than 18 years of age, diagnosed CD following ESPGHAN criteria, on GFD for at least 6 months and consulting at Hospital Roberto del Río, Santiago, in 2008-2016, were assessed. Clinical presentation, nutritional evaluation and fac tors related to adherence to treatment (diet) were registered. A subsample answered Biaggi's nutri tional questionnaire. RESULTS: Of 65 evaluated patients, 44% and 30,1% adhered to GFD according to blood autoantibodies (TTG and EMA) and the adherence questionnaire, respectively. "Age at debut" (p = 0.049), "perception of following GFD correctly" (p = 0.002) and "behavior in social events" (p = 0.005) were significantly associated with adherence to GFD. There was concordance between serological test and Biagi's questionnaire (p = 0.0001). DISCUSSION: Adherence to GFD was lower than reported in literature. Intervention of some of the identified variables associated with adherence may help improving follow-up of celiac patients, especially those that due to diverse situations cannot measure their antibodies periodically.

La dieta sin gluten y los alimentos libres de gluten / Gluten-free diet and gluten-free foods

The gluten-free foods global market has significantly grown during the last decade. Gluten-free diet represents the treatment for celiac disease, non-celiac gluten sensitivity and wheat allergy Another group of persons that follows gluten-free diet has emerged, perceiving this diet as healthier feeding habit. It is especially this latter group that has increased to such an extent that they modified the market of gluten-free foods, improving availability of these products. However, because their demands and requirements are different, gluten content control of many of the currently existing local gluten-free foods is unsatisfactory We present the information available on these issues, emphasizing the few local data available, which refer to school-age snacks and the "Basic Food Basket", with and without gluten. Local studies show that gluten-free snacks for school-age children and the gluten-free Basic Food Basket are less available, their cost is higher and less than 8% meet FAO/WHO nutritional recommendations.

El mercado global de los productos sin gluten ha tenido un aumento sin precedente en la última década. La dieta sin gluten constituye el tratamiento de la enfermedad celíaca, la sensibilidad no-celíaca al gluten y de la alergia al trigo. Recientemente ha aparecido otro grupo de personas que elimina el gluten por considerarlo una opción de alimentación más saludable. Es especialmente este último grupo que ha logrado mejorar el mercado de alimentos sin gluten, pero sus requerimientos son distintos, por lo que parte del aumento del mercado ha sido en base de productos sin control adecuado de su contenido de gluten. Analizamos la información existente, poniendo énfasis en los datos nacionales recientemente obtenidos acerca de las colaciones escolares y la Canasta Básica Familiar sin gluten. En ambos casos la disponibilidad de productos equivalentes sin gluten es menor, el costo tres o más veces mayor y menos del 8% de ellos cumplen las recomendaciones nutricionales de la FAO/OMS.

Tratamiento de la enfermedad celíaca: ¿Cómo medir adherencia a la dieta libre de gluten? / Treating coeliac disease: How do we measure adherence to the gluten-free diet?

La enfermedad celíaca (EC) es un trastorno sistémico inmune mediado por la ingesta de gluten en individuos genéticamente susceptibles. Se caracteriza por manifestaciones clínicas variables, auto anticuerpos anti-endomisio, anti-transglutaminasa (tTG) y/o anti-péptidos de gliadina deamidados (PGD) en sangre, más daño variable de la mucosa intestinal. En Chile el 0,76% de los mayores de 15 años tiene IgA-tTG positiva y la prevalencia de EC se estima en ~0,6%. En familiares de primer grado de celíacos se ha identificado ~17% de casos tTG positivos. Hasta hoy el único tratamiento es la dieta libre de gluten (DLG), que para ser efectiva debe ser estricta, permanente y durante toda la vida. La DLG no contiene cero gluten, sino que lo disminuye hasta un «punto de corte¼, que en Chile es 3 ppm (o mg/kg de producto). La mortalidad de la EC es mayor que la de la población general, y la falta de adherencia al tratamiento se asocia a complicaciones (procesos autoinmunes y cáncer principalmente). La DLG es difícil de mantener estrictamente, y las transgresiones son por lejos la principal causa de falta de respuesta al tratamiento. El seguimiento también es difícil, porque no existen marcadores objetivables que midan la adherencia. En la práctica clínica se utiliza la medición de auto anticuerpos anti-endomisio, tTG y/o PGD; más recientemente se están evaluando las entrevistas por una nutricionista especializada, cuestionarios validados y la medición de péptidos 33-mer en heces como alternativas o complementos de la evaluación de adherencia. En este artículo se revisan las herramientas de seguimiento actualmente utilizadas, poniendo énfasis en aquellas disponibles en Chile.

Coeliac disease (CD) is a systemic autoimmune disorder triggered by gluten consumption in genetically susceptible individuals. It exhibits several clinical features, such as blood auto-antibodies (anti-endomysial antibodies EMA, anti-transglutaminase antibodies tTG, anti-deamidated gliadin peptides PGD), plus variable degrees of damage in the small intestinal mucosa. In Chile, tTG is positive in 0.76% in individuals >15 years, with the prevalence of CD being estimated at 0.6%. Approximately17% of first-degree relatives of coeliac patients have been reported tTG positive. To date, the gluten free diet (GFD) is the only known treatment for CD. To be effective, this must be lifelong, permanent, and strict. Gluten content in the GFD is not zero, but is limited to a cut-off of 3 ppm (or mg/kg of product) in Chile. Mortality higher than that of the general population has been reported among coeliac patients, and poor adherence to GFD is associated with complications (mainly autoimmune processes and cancer). GFD is difficult to maintain strictly and poor adherence is by far the main cause of lack of response to treatment. Follow-up of adherence is also difficult because there are no objective measurements to assess it. In clinical practice determination of serum EMA, tTG and PGD is routinely used for these purposes, although more recently, the interview by an expert dietitian, validated questionnaires and measurement of faecal 33-mer peptide are being assessed as alternatives or complements to measure adherence to GFD. A review is presented with the current concepts on the available tools to follow up patients on GFD, emphasising those available in Chilel.

Inicio de alimentación complementaria y riesgo de enfermedad celíaca y alergia alimentaria: ¿De qué evidencia disponemos? / Complementary feeding and risk of celiac disease and food allergy: What does the evidence say?

Celiac disease is a chronic systemic disorder mediated by immune and autoimmune phenomena, triggered by ingestion ofgluten and related prolaminas in genetically susceptible individuals. Food allergy is an adverse, immune mediated, reproducible reaction to a foodstuff. Recommendations on complementary feeding have varied along time and also vary in different countries, depending on their cultures, socioeconomic resources and dietary habits. To date the scientific evidence is not clear about how the nature and quantity of foods given to a child and the forms in which they are given influence health and futures development in the child. Recent publications question some basic criteria of pediatric feeding, like the protective role of maternal milk and the benefit of postponing the introduction of some frequently allergenic foods; they suggest that the age of introduction of gluten and other potentially allergenic foodstuffs do not modify the risk of developing celiac disease or food allergy and that breast feeding does not protect from these two conditions. For these reasons we have considered relevant to review the available evidence on these matters on celiac disease and food allergy.

La Enfermedad Celíaca (EC) es una enfermedad sistémica crónica mediada por fenómenos inmunes y autoinmunes, gatillado por la ingesta de gluten y prolaminas relacionadas, en individuos genéticamente susceptibles. La alergia alimentaria (AA) es una reacción adversa, inmuno-mediada, reproducible a un alimento. Las recomendaciones acerca de la alimentación complementaria han variado a lo largo del tiempo y también varían en los distintos países según sus culturas, medios económicos y hábitos alimentarios. Hasta el momento la evidencia científica no entrega certeza en cómo la naturaleza de los alimentos entregados, la cantidad de éstos o la forma de darlos, influyen en la salud y desarrollo a futuro del niño. Estudios publicados recientemente han puesto en duda algunos criterios básicos de la alimentación en pediatría, como el rol protector de la lactancia materna o el beneficio de retardar la introducción de ciertos alimentos frecuentemente alergénicos, sugiriendo que la edad de introducción del gluten y otros alimentos potencialmente alergénicos no modificaría el riesgo de desarrollar la EC ni la AA y que la lactancia materna no confiere protección para EC ni para AA. Por estas razones hemos considerado de interés evaluar la evidencia disponible acerca de la EC y la AA.

Búsqueda activa de enfermedad celíaca en familiares de primer grado de casos celíacos / Active search of celiac disease among first degree relatives of known celiac patients

Background: Active search of celiac disease (CD) among risk groups has significantly increased the scope of known clinical variants. Aim: To measure the frequency and clinical characteristics of CD among first degree relatives (FDR) of known celiac cases. Material and Methods: Between January 2012-August 2013, 37 patients with celiac disease brought 113 FDR for assessment. Their clinical data was recorded and a blood sample was obtained to measure serum Immunoglobulin A (IgA) levels, anti-transglutaminase (tTG) and anti-endomisial (EMA) antibodies. Cases with positive serology were advised to have an intestinal biopsy. Results: Fourteen relatives (12.4%) had positive serological results and none had IgA deficiency. Among IgA-tTG (-) cases, measurement of IgA/IgG-tTG identified an additional case. Two of the 14 relatives were EMA positive. All 14 cases were advised to have an intestinal biopsy, but only 6 accepted the procedure. In two, the intestinal lesion was classified Marsh ≥ 2 and active CD was diagnosed. Histology in the remaining four was Marsh 0/1 and were diagnosed potential CD, remaining under control, without gluten free diet. Conclusions: Serological prevalence of CD among first degree relatives of known celiac cases was 15 fold greater than in THE general Chilean population, strongly supporting the idea of implementing active search to customary clinical practice. Determination of IgA/IgG-tTG may be useful to improve the yield of active search. Intestinal biopsies were crucial to differentiate active classic CD from potential CD.

Sensibilidad no celíaca al gluten: Una patología más que responde al gluten / Non-celiac gluten sensitivity: Another condition that responds to gluten

Remission of gastrointestinal and general symptoms after gluten withdrawal has been described in some non-celiac individuals for nearly 30 years. Only recently, efforts have been made to define this entity, now referred to as "non- celiac gluten sensitivity". It includes patients that clinically respond to gluten free diet without exhibiting allergic or autoimmune features to explain such response. Wheat allergy, celiac disease, irritable bowel syndrome and symptoms induced by high FODMAPs (Fermentable, Oligo-, Di-, Mono-saccharides And Polyols) consumption are the main differential diagnoses. The relationship with neuropsychiatric disorders such as schizophrenia and autism has not been demonstrated, but currently it gives ground to great hope in families with affected children. Epidemiology of non-celiac gluten sensitivity is not clear. It is described as more common among women and less common in children. Genetic and immune factors, changes in intestinal microbiota and non-gluten components present in wheat grains are main factors postulated in the pathogenesis of this condition. To date, there are no specific biomarkers for non-celiac gluten sensitivity and diagnosis is reached by excluding other causes of disease. A trial with gluten-free diet and subsequent gluten challenge is the methodology most frequently used to confirm diagnosis.

Enfermedad celíaca. Una mirada actual / Catching up on celiac disease

Knowledge about celiac disease continues to grow and amaze those who investigate, seek and treat this condition. Gone are the days when it was considered just a rare child's digestive disease. It is now recognized as a highly prevalent autoimmune condition that affects children and adults with digestive and extra-digestive symptoms of diverse intensity, disorder that may be either mono, oligo or asymptomatic from a digestive point of view. Today, it is an underdiagnosed condition, not actively considered, and often mistakes are made regarding its diagnosis, treatment and gluten-free diet monitoring. This article reviews the current definition of the disease, clinical presentations, potential patients, how to search for the disease, how the diagnosis is made and characteristics of the treatment and monitoring of celiac patients, all based on internationally agreed standards, and emphasizing those aspects that have proven to be useful in other countries regarding the management of the disease.

El conocimiento acerca de la enfermedad celíaca continúa creciendo y sorprendiendo a aquellos que la investigan, la buscan y la tratan. Lejos están los tiempos en que se la consideraba una patología digestiva del niño, poco frecuente. Actualmente se la reconoce como una condición autoinmune altamente prevalente, que afecta a niños y adultos, con manifestaciones digestivas y extra digestivas de muy diversa intensidad, pudiendo ser mono, oligo o incluso asintomática desde el punto de vista digestivo. Hoy en día está sub-diagnosticada, no se la busca activamente, se incurren en errores tanto al diagnosticarla como en la indicación del tratamiento y seguimiento de la dieta sin gluten. En este artículo revisamos la definición actual de la enfermedad, las presentaciones clínicas que se le conocen, en quiénes y cómo se debe buscar, como se hace el diagnóstico, y en qué consiste el tratamiento y seguimiento del paciente celíaco, basándonos en los criterios internacionales actualmente consensuados, y poniendo énfasis en aquellos aspectos que han demostrado ser útiles en otros países para mejorar el manejo de la enfermedad.

Variación estacional del perfil lipídico en adultos aparentemente sanos de Santiago, Chile / Seasonal variations in the lipid profile of apparently healthy young adults living in Santiago, Chile.

El perfil lipídico depende de muchos factores. Sin embargo, las variaciones estacionales de estos componentes han sido escasamente establecidas en el hemisferio sur. El objetivo de este estudio fue determinar la variación estacional del perfil lipídico por un periodo de un año en un grupo de adultos aparentemente sanos de Santiago, Chile. El diseño del estudio fue observacional y prospectivo. Participaron en el estudio 50 voluntarios sanos de ambos sexos y de edades entre 23 a 62 años. En forma mensual y durante un año se midió el perfil lipídico. LDL fue significativamente mayor en invierno y primavera que en verano (p<0,01). Por el contrario HDL disminuye en invierno (p<0,05). Se concluye que existen variaciones estacionales en los niveles séricos de LDL y HDL. El patrón circanual está caracterizado por mayores niveles de LDL en invierno y primavera y menores niveles de HDL en invierno.

The lipid profile is impacted by numerous factors. However, the seasonal variations in this profile have not been well-established in the southern hemisphere. The aim of this study was to determine the seasonal variation of the lipid profile in apparently healthy adults from Santiago, Chile. The study design was observational and prospective, involving 50 healthy volunteers of both genders, aged 23-62 years. The lipid profile was measured at monthly intervals over the course of one year. LDL was significantly higher in winter -spring than in summer- fall (p <0.01). Conversely, HDL decreases significantly in winter (p<0,05). We conclude that there are seasonal variations in the serum levels of LDL and HDL. The circannual pattern is characterized by increased levels of LDL in winter-spring and low levels of HDL in winter.

Prevalencia de las deficiencias de zinc y cobre en adultos mayores de la Región Metropolitana de Santiago / Prevalence of zinc and copper deficiencies in older subjects living in Metropolitan Santiago

Background: Older subjects have a high risk of developing zinc and copper deficiencies. Aim: To determine the prevalence of copper and zinc deficiencies in adults aged over 60 years, living in Metropolitan Santiago. Subjects and Methods: Analyses were performed using anonymous serum samplesfrom older subjects living in Santiago, Chile, who participated in the multicenter project SABE. Of the studied subjects, 49.3 percent had enough left over serum to measure serum zinc and copper concentrations by atomic absorption spectrometry. Results: A total of444 men and 198 women were studied. A positive correlation between serum zinc and copper was found in both women (r = 0.44, p < 0.001) and men (r = 0.48, p < 0.001). There were no differences in serum zinc concentration by sex and age. The prevalence of subnormal serum zinc valúes was 66.9 percent in women and 66.7 percent in men. Women had a significantly higher serum copper valúes than men (p < 0.02) and there were no differences by age. Prevalence of subnormal serum copper valúes was higher in women than in men (32.9 and 23.7 percent respectively, p < 0.05). Women had significantly higher copper I zinc serum ratio than men (p < 0.001). Conclusions: Older people living in Metropolitan Santiago have a high prevalence of copper and zinc deficiencies.

El gluten: Su historia y efectos en la enfermedad celíaca / History of gluten and its effects on celiac disease

The global prevalence of celiac disease is of one person per 250 inhabitants. The disease is induced by gluten, a peptide contained in wheat, rye and barley that during small intestinal digestion generates smaller peptides. Some of these are resistant to hydrolysis and cross through the epithelium into the mucosa, inducing a cascade of immune reactions leading to the appearance of the disease in susceptible individuals. Gluten appeared as a consequence of agricultural practices initiated 10000 years ago in the Fertile Crescent of southwest Asia. Celiac disease epidemiology is complicated since consumption of gluten differs depending on the origin of populations. Treatment of celiac disease consists of withdrawing gluten from the diet, a task that becomes difficult in the long term. The concept of gluten-free food has changed along time. This article updates the concept of celiac disease, the history of gluten consumption in the world, the characteristics of a gluten free diet and the difficulties to adhere to it.

Aporte calórico-proteico durante la recuperación nutricional y estado nutricional alcanzado / Energy protein intake during nutritional recovery and nutritional status achieved

Hace 30 años los niños chilenos que se recuperaban en CONIN recibían alimentación ad libitum, que podría haber favorecido la aparición de sobrepeso y obesidad (SP/OB). Por este motivo el objetivo de este estudio fue evaluar la relación entre la ingesta energético-proteica durante la recuperación nutricional y la aparición de sobrepeso-obesidad (SP/OB) al alta. Se diseño un estudio retrospectivo, analítico del universo formado por las 168 fichas encontradas de menores de 2 años, desnutridos primarios recuperados en CONIN entre 1977-1982. Se evaluó el estado nutricional por Sempé (referencia de crecimiento utilizada en esos años) y OMS (referencia actual), desde el ingreso hasta el cuarto mes de estadía y al alta. Según referencia de Sempé la desnutrición al ingreso fue 25 por ciento grave, 63 por ciento moderada y 12 por ciento leve; por OMS (P/T) estas cifras eran 14.9 por ciento, 29.2 por ciento y 38.1 por ciento, respectivamente; el resto era eutrófico. Al alta, no había niños con SP/OB por P/E (Sempé), mientras que según P/T, el 6 por ciento tenía SP/OB a los 3 meses de tratamiento y el 13,8 por ciento al alta. La ingesta alimentaria promedio, aportada ad libitum, fue de 148 kcals/Kg/día y 4 g prot/kg/día. Los niños con SP/OB tuvieron mayor ganancia de peso diario (30,3 vs 19,2 g/día) que sus pares no obesos y mayor ganancia de peso diario comparado al promedio para la edad (19,7 vs 8,2 g/día). La alimentación prescrita alcanzó valores elevados dentro del rango utilizado actualmente; la ingesta real, administrada ad-libitum, fue significativamente menor y se asoció a una frecuencia de 13,8 por ciento SP/OB.

Thirty years ago malnourished Chilean children were recovered by CONIN; they were fed ad libitum and this may have favoured the appearance of overweight-obesity (SP/OB). The objective of this study was to evaluate the relationship between energy-calorie intake during nutritional recovery and the appearance of overweight-obesity (SP/OB). The design was a retrospective, analytical study of the universe formed by the 168 clinical records found, of children below 2 years of age, recovered by CONIN between 1977 and 1982. Nutritional status was assessed using the Sempé criteria (applied in the period evaluated) and those of WHO, (currently in use), on admission, after 4 month treatment and on discharge. By Sempé criteria, malnutrition on admission was classified 25 percent severe, 63 percent moderate and 12 percent mild; instead, using WHO standards these figures were 14,9 percent, 29,2 percent y 38,1 percent, respectively; the remaining children were well nourished. On discharge, there was no SP/OB by W/A (Sempé), but by W/H (WHO) 6 percent and 13.8 percent were SP/OB after 3 months and on discharge, respectively. Food intake, administered ad libitum, reached a mean of 148 kcals/kg/d and 4 g prot/kg/d. SP/OB children had greater daily weight gain (30,3 vs 19,2 g/d) than the non-obese children and greater daily weight gain than the mean for age and sex (19,7 vs 8,2 g/día). The prescribed feeding reached values considered high by currently used criteria; actual intake, administered ad-libitum, was significantly lower and was associated with 13.8 percent of children with overweight-obesity at the time of discharge.

Cambios del patrón de enfermedad en la postransición epidemiológica en salud en Chile, 1950-2003 / Changes in the patterns of disease after the epidemiological transition in health in Chile, 1950-2003

Background: During the twentieth century there was a change in the pattern of diseases in Europe, with an increase in the incidence of allergies and autoimmune disorders, that paralleled a decrease of infectious conditions. The Hygiene hypothesis proposes that these phenomena are causally related. Aim: To evaluate the epidemiological changes of allergic, autoimmune, and infectious diseases in Chile between 1950 and 2003. Material and methods: Search for the incidence and prevalence of these diseases in the national records published by the Ministry of Health, as well as through a systematic search of national literature using PubMed and Scielo as search engines. Results: The annual incidence of tuberculosis, rheumatic fever, measles, and typhoid fever has progressively diminished in Chile since 1970. Figures for the national prevalence for asthma, rheumatoid arthritis, and type I diabetes are scarce and difficult to compare, but clearly show an increasing epidemiological trend in the last 20 years. Conclusions: The national figures suggest that, although the country has only recently gone through an epidemiological transition in health problems, there are detectable changes that show the same trends described in Europe.

Desnutrición grave en un hospital pediátrico / Severe malnutrition in a pediatrics hospital

La desnutrición crónica es el tipo de desnutrición mas frecuente en América Latina. Observaciones clínicas no spermiten suponer que la desnutrición edematosa aun constituye un factor preponderante en la mortalidad infantil hospitalaria. El objetivo es medir la prevalencia y características de los niños internados por desnutrición severa en el Hospital Albina R de Patiño de la ciudad de Cochabamba en los años 2000 y 2001.

Evaluación del manejo del desnutrido severo menor de cinco años en las redes departamentales de salud de las ciudades de La Paz y El Alto / Evaluation of the severe malnourished children under five years of age

Objetivos: Determinar el manejo del desnutrido severo menor de cinco años en los hospitales Boliviano Holandés y “Ovidio Aliaga Uría” y las redes municipales de las ciudades de El Alto y La Paz. Diseño: Se revisaron retrospectivamente historias clínicas de pacientes menores de cinco años atendidos con el diagnostico de desnutrición severa los años 2001 y 2002 en el Hospital del Niño “Dr. Ovidio Aliaga Uría” y los años 2001 a 2003 en el Hospital Boliviano Holandés. Se realizó un análisis FODA para determinar fortalezas, debilidades, oportunidades y amenazas en la red de servicios municipales y se observaron pacientes hospitalizados para verificar el cumplimiento de la contrarreferencia. Lugar y contexto: Las ciudades de La Paz y El Alto en establecimientos de la Secretaria Departamental de Salud de La Paz. Pacientes o participantes: Historias clínicas de pacientes y personal. Resultados: Un total 137 historias clínicas de las cuales 89% cumplía los criterios de la OMS para desnutrición severa. La ausencia de datos o su falta de confiabilidad impidió determinar indicadores como velocidad de ganancia de peso, prevalencia de desnutrición severa y tasas de letalidad en ambos hospitales. El Hospital del Niño demostró mejor aplicación de los 10 pasos, mientras que en el Boliviano Holandés, las mismas no se usan. La referencia y contra-referencia en las redes es incipiente, con falencias importantes en equipo, comunicación y transporte, sin embargo la vigencia de SUMI y la delimitación geográfica y normativa de la redes, son factores promisorios para su funcionamiento futuro. La contrarreferencia es prácticamente inexistente. Conclusiones: Se recomienda mejorar la atención del desnutrido severo en los hospitales de referencia y en la red de servicios de salud. Se deben considerar acciones tomadas en otros países y las facilidades de entrenamiento clínico que propone el curso estándar de la Organización Mundial de la Salud.

Objectives: To evaluate case management of severely undernourished children less than five years of age treated in Hospitals Bolivano Holandes and “Dr. Ovidio Aliaga Uria” and the networks of the cities of El Alto and La Paz - Bolivia Design: A retrospective review of clinical records belonging to patients admitted with severely under nutrition during years 2001-2002 at Hospital “Dr. Ovidio Aliaga Uria” and 2001-2003 at Hospital Boliviano Holandés was done. Additionally an analysis to determine strengths, weaknesses, opportunities, and threats in the municipal health network was performed alongside with observations of in-patients admitted for severe undernutrition during January 2004 to verify fulfilment of back referral. Place: Cities of La Paz and El Alto - Bolivia in establishments of the Regional Health Authority. Subjects: Clinical reports of patients and participation of health staff. Results: A total of 137 clinical reports were reviewed, 89% of them fulfilled WHO criteria for severely undernourished. Lack of some data restricted the elaboration of some indicators among them velocity of weight gain, prevalence of under nourishment and case fatality rates. Hospital “Dr. Ovidio Aliaga Uria” showed a better application of the 10 steps, while in Hospital Boliviano Holandes those are not utilised. The networks referral and back referral is initial with important deficiencies in equipment, communication and transport, however the presence of public health insurance and the demarcation of the networks were seen as promising factors for the future. Back referral was found inexistent. Conclusions: The study recommends to improve the care for the severely undernourished both at the reference hospitals and the municipal network. On should consider actions taken in other countries and facilities for clinical training offered by the WHO standard course.