| Título: | MOLECULAR INVESTIGATION OF GLUTARIC ACIDURIA TYPE1 IN IRAN |
| Autores: |
HOUSHMAND, Massoud; Assistant Professor of Human Genetics, Genetic Department of Special Medical Center & National Institute for Genetic Engineering and Biotechnology,Medical Genetic Dep, Tehran, Iran ARYANI, Omid; Genetic Counselor, Special Medical Center, Genetic Diagnostic Laboratory, Tehran, Iran PIRZADEH, Zahra; Assistant Professor of Pediatric Neurology, Qazvin University of Medical Sciences, Qazvin, Iran GHASEMI, Fereshteh; Genetic Technician, Special Medical Center, Tehran, Iran SALEHPOUR, Shadab TEHRANI, Freshteh |
| Fecha: | 2012-01-09 |
| Publicador: | Iranian Journal of Child Neurology |
| Fuente: |
 |
| Tipo: |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
| Tema: | Glutaric Aciduria; Iranian population;Mutation detection. |
| Descripción: | Glutaric Acidemia, Type I (GA I), was first described in 1975. The disease is caused by a genetic deficiency of the enzyme, Glutaryl-CoA Dehydrogenase (GCD), which leads to the buildup of Glutaric acid in the tissues and its excretion in the urine of affected patients. GCD is involved in the catabolism of the amino acids, Lysine, Hydroxylysine, and Tryptophan. Over 200 cases of GA I have been reported in the medical literature. GA I is one of the most common organic acidemias and has an estimated incidence of about 1 in 50,000 live births.Because of the initial slow progression of clinical symptoms, GA I is frequently undiagnosed until an acute metabolic crisis occurs. A total of 25 unrelated patients suspected to GA1 were investigated in our study. Genomic DNA was extracted from peripheral blood cells of the 25 probands whom were biochemically and/or clinically and/or neuro-radiologically suspected to GA1. 15 of them had elevated glutaric acid in the urine organic acid test.PCR and direct sequencing of all 11 exons and their flanking region of the GCDH gene were examined.Some of them were investigated for known mutation in the other their family members. Fifteen patients had homozygous mutations and 10 patients were normal for GCDH gene. Our Results Showed:• 60% Known mutation were found in our 15 patients• 80% can be detected by 4 exons sequencing so for molecular investigatins exon 6, 7, 8, 10 are good choice for beginning of analysis• 33% was mutation in exon 7, so because of the cost of genetic diagnosis we suggest that investigation begin with this exon.• Pro 348 Leu was most detected 20%.• 40% are new mutations wich will be investigated for phenotype Genotype Correlations. |
| Idioma: | Inglés |
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