Positive rate of autoantibodies against adrenergic receptors beta1 and angiotensin II type 1 receptors in the type 2 diabetes mellitus with or without hypertension / 中华心血管病杂志
Chinese Journal of Cardiology
;
(12): 139-142, 2010.
Artigo
em Chinês
| WPRIM
| ID: wpr-341267
ABSTRACT
<p><b>OBJECTIVE</b>To observe the positive rates of autoantibodies against beta1 adrenergic receptors (beta1-receptor) and angiotensin II type 1 receptors (AT(1)-receptor) in type 2 diabetes patients with or without hypertension.</p><p><b>METHODS</b>The epitopes of the second extracellular loop of beta1-receptor (197 - 222) and AT(1) receptor (165 - 191) were synthesized and serum autoantibodies were determined in type 2 diabetes patients with hypertension (n = 171) or without hypertension (n = 106). Left ventricular dimension was determined by echocardiography. The 24-hour urinary protein was measured by ELISA. The risk factors for enlarged left ventricle were analyzed by multiple logistic regressions.</p><p><b>RESULTS</b>The positive rates of the autoantibodies against beta1-receptors (45.0%) and AT(1)-receptor (46.2%) in patients with type 2 diabetes with hypertension were significantly higher than those in patients with type 2 diabetes without hypertension (16.0% and 10.4%, respectively, all P < 0.01). In type 2 diabetes patients with hypertension and enlarged left ventricle, the positive rates of the autoantibodies against beta1-receptor 61.4% (35/57) and against AT(1)-receptor 64.9% (37/57)were significantly higher than those in type 2 diabetes patients with normal left ventricular dimension (36.8%, 42/114 and 36.8%, 42/114, respectively, all P < 0.01). Regression analysis demonstrated that course of disease, systolic pressure, serum autoantibodies against beta1 adrenergic receptor and angiotensin II type 1 receptors sera autoantibodies were independent risk factors for left ventricular enlargement (all P < 0.05).</p><p><b>CONCLUSION</b>The serum beta1 and AT(1)-receptor autoantibodies are related to enlarged left ventricle in type 2 diabetes patients with hypertension and suggest that autoantibodies against beta1 and AT(1)-receptor might play important roles in the pathogenesis of type 2 diabetes patients with hypertension and enlarged left ventricle.</p>
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Autoanticorpos
/
Sangue
/
Hipertrofia Ventricular Esquerda
/
Receptores Adrenérgicos beta 1
/
Receptor Tipo 1 de Angiotensina
/
Diabetes Mellitus Tipo 2
/
Alergia e Imunologia
Tipo de estudo:
Fatores de risco
Limite:
Idoso
/
Feminino
/
Humanos
/
Masculino
Idioma:
Chinês
Revista:
Chinese Journal of Cardiology
Ano de publicação:
2010
Tipo de documento:
Artigo
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