Association between G-308A polymorphism of the tumor necrosis factor-alpha gene and 24-hour ambulatory blood pressure values in type 1 diabetic adolescents.
Clin Genet
; 62(6): 474-7, 2002 Dec.
Article
en En
| MEDLINE
| ID: mdl-12485196
ABSTRACT
Tumor necrosis factor-alpha (TNF-alpha) is an inflammatory cytokine, which also influences blood pressure (BP). The G-308A polymorphism of the TNF-alpha gene is associated with altered TNF-alpha production. The prevalence of the TNF-alpha-308A allele is reportedly higher among patients with type 1 diabetes mellitus (T1DM) than in the healthy population. In this study we investigated whether this genetic polymorphism might correlate with BP values in diabetic adolescents. Ambulatory BP monitoring (ABPM) was performed in 126 adolescents with T1DM (mean age 14 +/- 2.4 years). The TNF-alpha G-308A genotype was determined by using polymerase chain reaction (PCR) and restriction fragment length polymorphism (RFLP) methodologies. ABPM results were related to healthy reference values and are given as standard deviation score (SDS). The prevalence of the -308A allele was higher in diabetic adolescents than the Hungarian reference population (0.26 vs 0.14, p < 0.01). TNF-alpha genotype was associated both with systolic and diastolic BP values (p < 0.01 and p < 0.01, respectively). In patients with TNF-alpha-308GG and -308GA/AA genotypes, the 24-h systolic BP average values were 0.37 +/- 1.33 and -0.38 +/- 1.28 SDS, while 24-h diastolic BP average values were 0.09 +/- 1.30 and -0.67 +/- 1.31 SDS. Hence, the TNF-alpha-308A allele carrier state appears to be associated with lower systolic and diastolic BP values.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Factor de Necrosis Tumoral alfa
/
Monitoreo Ambulatorio de la Presión Arterial
/
Polimorfismo de Nucleótido Simple
/
Diabetes Mellitus Tipo 1
Tipo de estudio:
Risk_factors_studies
Límite:
Adolescent
/
Child
/
Female
/
Humans
/
Male
País/Región como asunto:
Europa
Idioma:
En
Revista:
Clin Genet
Año:
2002
Tipo del documento:
Article
País de afiliación:
Hungria