[Molecular characterization of heterozygous beta-thalassemia in Lanzarote, Spain]. / Caracterización molecular de la betatalasemia en Lanzarote.
Med Clin (Barc)
; 130(12): 450-2, 2008 Apr 05.
Article
en Es
| MEDLINE
| ID: mdl-18405499
ABSTRACT
BACKGROUND AND OBJECTIVE:
The aim of this study was to determine the molecular defects of heterozygous beta thalassaemia and to ascertain their distribution in Lanzarote. PATIENTS ANDMETHOD:
Molecular characterization was achieved by real time polymerase chain reaction (RT-PCR LightCycler, Roche), PCR-ARMS (PCR-amplification reaction mutations system) and DNA sequencing on an automated DNA sequencer.RESULTS:
Two hundred forty-three heterozygous beta thalassaemia carriers were included between July 1991 and February 2007. RT-PCR detected the molecular defect in 81% of the beta thalassaemia chromosomes analyzed [113 codon CD 39 (C --> T); 41 IVS-1-nt-110 (G --> A), 25 IVS 1-nt-1 (G --> A) and 19 IVS 1-nt-6 (T --> C)]. The remaining 12 molecular defects included the deletion 619 bp (7.8%) and the mutations -28 (A --> G), IVS1-nt-2 (T --> G), CD 41/42 (-TTCT), CD 8/9 (+G), CD 51 (-C), CD 22 (G --> T) and CD 24 (T --> A), CD 67 (-TG) and the novel mutation CD 20/21-TGGA.CONCLUSIONS:
The distribution of the mutations is similar to that found in the Mediterranean area. The increasing migratory flow received in the Canary Islands may explain the emergence of new mutations not reported before in our area.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Talasemia beta
/
Heterocigoto
Tipo de estudio:
Observational_studies
/
Prevalence_studies
/
Risk_factors_studies
Límite:
Humans
País/Región como asunto:
Europa
Idioma:
Es
Revista:
Med Clin (Barc)
Año:
2008
Tipo del documento:
Article
Pais de publicación:
ES
/
ESPANHA
/
ESPAÑA
/
SPAIN