ABSTRACT
La malformación adenomatoide quística es una lesión pulmonar congénita que resulta de la proliferación adenomatosa de bronquiolos y alvéolos terminales, con formación de quistes. El diagnóstico se realiza habitualmente durante el período perinatal, pero existen casos asintomáticos que se descubren durante la infancia o en la edad adulta. Se presenta el caso de una niña de 9 años en estudio por dolor torácico. La radiología de tórax demostró una imagen quística en el lóbulo superior izquierdo que se confirmó mediante tomografía computarizada torácica y angiorresonancia. Se realizó resección quirúrgica del lóbulo afectado confirmándose mediante anatomía patológica el diagnóstico de malformación adenomatoide quística tipo 1 (AU)
Subject(s)
Child , Male , Infant , Female , Humans , beta-Lactam Resistance , Streptococcus pneumoniae , Vancomycin , Cystic Adenomatoid Malformation of Lung, Congenital , Meningitis, Pneumococcal , Anti-Bacterial Agents , Central America , Cefotaxime , Age FactorsABSTRACT
OBJECTIVE: To compare the phenotypic and gene frequencies of the HLA system in celiac and healthy subjects the same geographical area. PATIENTS AND METHODS: HLA A, B, C, DR and DQ phenotypic and gene frequencies have been estimated in 38 celiac children and healthy subjects. The HLA typing has been done according to the microlymphocytotoxicity assay. The individual HLA antigen frequencies in each group have been compared by Chi-square test using Yates correction. For each specificity, the strength of association with celiac disease has been estimated by Odds Ratio and 95% confidence limit. RESULTS: The comparative study of both population show increased phenotypic and gene frequencies among celiac patients and significant differences compared with healthy subjects for B8, Cw7, DR3, DR7 and DQ2. On the contrary, Cw4 and DQ1 phenotypic and gene frequencies are significantly increased in the control population. CONCLUSIONS: Our findings support the role of HLA antigens as predisposing factors for celiac disease. The presence of Cw4 and DQ1 can be a protective factor against such disease.
Subject(s)
Celiac Disease/genetics , HLA Antigens/genetics , Adolescent , Child , Child, Preschool , Female , Genotype , Humans , Infant , Male , Phenotype , SpainABSTRACT
OBJECTIVE: Celiac disease is closely correlated with certain human lymphocyte antigen (HLA) alleles. The aim of this study was to compare linkage disequilibrium parameters and the frequencies of the two loci haplotypes: HLA A/B, A/C, A/DR, A/DQ; HLA B/C, B/DR, B/DQ; HLA C/DR, C/DQ and HLA DR/DQ in children with celiac disease and in a control population within the same geographical area. METHODS: Thirty-eight children with celiac disease, aged 5months to 18years at diagnosis, were HLA typed by microlymphocytotoxicity assay using T and Bcells separated by monoclonal antibody labeled immunomagnetic particles. The frequency of each haplotype of two loci (Hij) depends on the frequency of each allele (pi and pj) and on a correction factor delta, according to the formula: Hij5 Dij1(pi3pj). The existence of a correction factor delta, or linkage disequilibrium, was assessed by a chi square test using 2 X 2contingency tables for gametic association. RESULTS: Among children with celiac disease the most frequent and significant haplotypes were A1/B8, A9/B5, A19/B12, A28/B22, A28/Cw1, A9/DQ3, B8/Cw7, B18/Cw5, B22/Cw1, B5/DR5, B8/DR3, B12/DR7, B5/DQ3, DR3/DQ2, DR4/DQ8 (3) and DR5/DQ3, showing a positive linkage disequilibrium. Negative linkage disequilibrium was found between B18/Cw7, B12/DR3, Cw4/DR3 and DR3/DQ3. CONCLUSIONS: Our findings show that the frequency of A1/B8,A19/B12, B8/DR3,B12/DR7 and DR3/DQ2 haplotypes is higher in children with celiac disease than in the control population and suggest that these two loci haplotypes confer susceptibility to celiac disease.
