Identificación de la mutación ΔF508 en afectados con íleo meconial

Objetivo: Identificar la mutación ΔF508 en pacientes con íleo meconial. Ambiente: En el Instituto de Investigaciones Genéticas de la Facultad de Medicina de la Universidad del Zulia. Maracaibo. Métodos: Se estudiaron diez pacientes con ileo meconial. La detección de la mutación ΔF508 se realizó a partir de amplificación por reacción en cadena de la polimerasa de un segmento del gen de fibrosis quística de 98 pares de bases que contiene el codón que codifica a la fenilalanina en la posición 508 y el cual está ausente en los que tienen la mutación. Resultados: Se detectó la mutación ΔF508 en ambos alelos del gen de la fibrosis quística en tres pacientes, en un solo alelo en cinco y en dos no se identificó el alelo ΔF508 en su patrón molecular. Conclusión: El íleo meconial fue el marcador que sugirió el diagnóstico de fibrosis quística y permitió el asesoramiento genético de las familias al confirmar la presencia de la mutación ΔF508.

Objective: To perform ΔF508 mutation in patients with meconium ileus. Setting: In the Genetic Research Institute of the Faculty of Medicine. University of Zulia. Maracaibo. Methods: We studied 10 patients with meconium ileus. Detection of the mutation was performed from the amplification of a 98 pair of bases cystic fibrosis gene segment which contains the codon that encodes fenilalanine in the 508 position by polymerase chain reaction. This amplified product is absent in those who have the mutation. Results: The ΔF508 mutation was detected in both alleles of the cystic fibrosis gene in 3 patients, 5 were heterozygous for this mutation and in two patients were undetectable. Conclusion: Meconium ileus was the marker that suggested the diagnosis of cystic fibrosis and allowed the genetic counseling in this family to confirm the presence of the ΔF508 mutation.

Cystic Fibrosis In India : Report Of 30 Cases And Frequency Of Delta F508 Mutation.

Cystic fibrosis (CF) is the most common potentially lethal disorder of Caucassians. Its frequency in India is not known. We diagnosed 30 cases of CF based on sweat chloride testing. The clinical profile and frequency of delta F508 mutation was studied. The frequency of F508 mutation was 27% (16 chromosomes) which is much lower as compared to that patients in the Western world. Eight patients carried other mutations, three of them were new mutations.