Human glucagon-like peptide-1 receptor gene in NIDDM. Identification and use of simple sequence repeat polymorphisms in genetic analysis.
Diabetes
; 43(6): 752-7, 1994 Jun.
Article
em En
| MEDLINE
| ID: mdl-8194659
ABSTRACT
Glucagon-like polypeptides, GLP-1-(7-36)-amide and GLP-1-(7-37), are important regulators of insulin synthesis and secretion by islet beta-cells. The hypothesis to be tested in this study was that defects in the islet beta-cell GLP-1 receptor gene contribute to the impaired glucose-regulated insulin secretion of non-insulin-dependent diabetes mellitus (NIDDM). Human islet GLP-1 receptor genomic clones were isolated, and two highly polymorphic simple sequence repeat regions (GLP-1R-CA1 and GLP-1R-CA3) were identified. Polymerase chain reaction assays were developed to define alleles. For GLP-1R-CA1, 14 alleles were observed in African-Americans (heterozygosity [het] = 0.78) and 6 alleles in Caucasians (het = 0.67). For GLP-1R-CA3, 16 alleles were observed in African Americans (het = 0.89) and 8 alleles in Caucasians (het = 0.83). By genotyping all members of the 40 reference Centre d'Etude du Polymorphisme Humain pedigrees at GLP-1R-CA3, the human GLP-1 receptor gene was uniquely placed on chromosome 6p between GLO1 and D6S19, 20.4 cM from human leukocyte antigen. To assess the possible role of the GLP-1 receptor gene in determining the genetic susceptibility to NIDDM, allelic frequencies of GLP-1R-CA1 and GLP-1R-CA3 were compared between African-American NIDDM patients (n = 95) and control subjects (n = 93). The frequencies did not differ between the two groups at either GLP-1R-CA1 or GLP-1R-CA3. The GLP-1 receptor gene simple-sequence repeat polymorphisms were used for linkage analysis in Utah Mormon pedigrees (n = 16) with NIDDM.(ABSTRACT TRUNCATED AT 250 WORDS)
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Polimorfismo Genético
/
Cromossomos Humanos Par 6
/
Sequências Repetitivas de Ácido Nucleico
/
Receptores de Glucagon
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Receptores de Superfície Celular
/
Diabetes Mellitus Tipo 2
Tipo de estudo:
Diagnostic_studies
Limite:
Animals
/
Humans
Idioma:
En
Revista:
Diabetes
Ano de publicação:
1994
Tipo de documento:
Article