Enhanced insulin response to oral glucose load in patients with angina pectoris associated with ST segment elevation in the absence of epicardial coronary arterial obstruction.
Angiology
; 49(10): 815-26, 1998 Oct.
Article
em En
| MEDLINE
| ID: mdl-9783646
ABSTRACT
The authors treated 10 patients with microvascular angina (MVA) manifesting angina pectoris, ST segment elevation suggestive of transmural myocardial ischemia, and no epicardial arterial obstruction. Since such patients frequently showed abnormal responses to oral glucose loading, the authors investigated the glucose and insulin responses to glucose loading in 10 MVA patients, 25 patients with vasospastic angina (VAP), 25 patients with effort angina (EAP), and 25 control subjects. Insulinogenic index, peripheral insulin activity [= 10(4)/(peak glucose x insulin at glucose peak)], glucose area, and insulin area were calculated. The MVA group included two patients with impaired glucose tolerance and two newly diagnosed diabetic patients. These proportions were similar to those in the VAP and EAP groups. Glucose levels at 30 to 180 min and insulin levels at 90 to 120 min in the MVA group were higher than in the control group. Peak glucose, glucose area, peak insulin, and insulin area were higher in the MVA group than in the control group (p<0.01). Those in the VAP and EAP groups were also higher. Insulin/glucose ratio at 120 min was higher, peripheral insulin activity, lower, in the disease groups than in the control group (p<0.05). The MVA patients showed a hyperglycemic and hyperinsulinemic response to oral glucose loading, as did the patients with EAP and VAP. Enhanced insulin response to oral glucose loading may also contribute to the pathogenesis of MVA.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Resistência à Insulina
/
Angina Microvascular
/
Sistema de Condução Cardíaco
Tipo de estudo:
Risk_factors_studies
Limite:
Adult
/
Aged
/
Female
/
Humans
/
Male
/
Middle aged
Idioma:
En
Revista:
Angiology
Ano de publicação:
1998
Tipo de documento:
Article
País de afiliação:
Japão