RESUMEN
Beta-thalassemia, an autosomal recessive disease, results from mutations of the beta-globin gene. More than 40 different mutations found in Turkish beta-thalassemia patients are mostly composed of point mutations, and only in very rare cases a deletion or an insertion causes beta-thalassemia phenotypes. Here, we report two patients who were clinically diagnosed with beta-thalassemia major and HbS/beta-thalassemia respectively. We performed reverse dot blot hybridization method and automated sequence analysis to detect the mutations. One of the patients was found to be IVS I.130 (G-C) homozygous, the other was HbS/IVS II.848 (C-A) as compound heterozygous. The aim of this study was to report hematological and clinical findings in both cases related with beta-globin gene defects that are very rare.
Asunto(s)
Hemoglobina Falciforme/genética , Mutación Puntual , Análisis de Secuencia de ADN/métodos , Talasemia beta/genética , Niño , ADN/análisis , ADN/aislamiento & purificación , Humanos , Masculino , Turquía/epidemiología , Talasemia beta/diagnósticoRESUMEN
To assess the trends in the frequency and the medical effects of consanguinity in the south coast of Turkish population using local and national data in the last 11 years. This cross-sectional study was carried out in Manavgat province, which is a major tourism center on the Mediterranean coast of Turkey. The authors studied consanguineous marriages in rural and urban population in the Mediterranean coast, Manavgat province, Turkey, via a 1500 random survey sample of married couples. There has been a significant increase in the incidence of consanguineous marriages in rural areas (40.7%) since 1989 in the southern population of Turkey. The results showed that the most frequent type of marriage was between the first cousins. It is found that there is no statistically significant difference between the consanguineous and non-consanguineous marriages in the different age groups. The results were discussed on the basis of educational status, reasons for having consanguineous marriages and the general medical effects as well as with the relation of congenital malformations. The custom of consanguineous unions in the Mediterranean population of Turkey is still extremely high, and preventive measures should be done to decrease its frequency and associated complications.