Optimization and application of a dried blood spot-based genetic screening method for thalassemia in Shenzhen newborns.
World J Pediatr
; 15(6): 610-614, 2019 Dec.
Article
em En
| MEDLINE
| ID: mdl-31030386
ABSTRACT
BACKGROUND:
To optimize and apply an approach suitable for large-scale neonatal thalassemia genetic screening in China, thalassemia genotypes were determined by polymerase chain reaction-reverse dot blot using DNA extracted from dried blood spots (DBS) obtained from newborn screening programs.METHODS:
Firstly, the most suitable commercial DNA extraction kit for DBS was screened. Then, the appropriate amount of DBS required for the automated high-throughput DNA extraction system was evaluated. Finally, the thalassemia prevalence and genotype spectrum in Shenzhen were investigated in 2028 newborns using the optimized screening procedure.RESULTS:
The Magentec extraction kit was best suited for the automated DBS DNA extraction system using eight 3-mm DBS discs. The neonatal thalassemia prevalence in Shenzhen was 9.12%; 6.31% α-thalassemia, 2.37% ß-thalassemia, and 0.44% α-/ß-thalassemia.CONCLUSIONS:
Genetic screening based on DBS can precisely identify the thalassemia genotypes. Both α- and ß-thalassemia are widely distributed in Shenzhen newborns. Newborn genetic screening is important for establishing a comprehensive thalassemia prevention program and for public education.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Testes Genéticos
/
Triagem Neonatal
/
Talassemia beta
/
Talassemia alfa
/
Teste em Amostras de Sangue Seco
Tipo de estudo:
Diagnostic_studies
/
Risk_factors_studies
/
Screening_studies
Limite:
Humans
/
Newborn
País/Região como assunto:
Asia
Idioma:
En
Revista:
World J Pediatr
Assunto da revista:
PEDIATRIA
Ano de publicação:
2019
Tipo de documento:
Article
País de afiliação:
China