Journal of cardiology · 2002
[Potential role of leptin and insulin resistance assessed by the glucose clamp technique in coronary artery disease].
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Isoda Mari, Kiuchi Kaname, Nejima Jun, Takano Teruo
Аннотация
OBJECTIVES: Leptin may correlate with insulin resistance and be an important factor in patients with coronary artery disease. Therefore, we examined whether plasma leptin levels and insulin resistance are linked with coronary artery disease.
METHODS: Plasma leptin levels and insulin resistance, assessed by the hyperinsulinemic euglycemic clamp technique, were measured in control subjects (n = 12, mean age 62 +/- 10 years), and in patients with obstructive coronary artery disease (n = 15, mean age 64 +/- 8 years) or vasospastic angina (n = 12, mean age 62 +/- 12 years).
RESULTS: Plasma leptin levels were significantly higher (p < 0.017) in patients with obstructive coronary artery disease (8.4 +/- 2.7 ng/ml) and vasospastic angina (7.9 +/- 2.1 ng/ml) than in patients without obstructive coronary artery disease (4.7 +/- 1.4 ng/ml). Mean glucose infusion rate was significantly (p < 0.017) lower in patients with obstructive coronary artery disease (4.39 +/- 1.78 mg/kg/min) and vasospastic angina (3.57 +/- 1.72 mg/kg/min) than in patients without obstructive coronary artery disease (8.74 +/- 1.05 mg/kg/min). The plasma levels of leptin were negatively correlated with mean glucose infusion rate (r = -0.67, p < 0.01). The other coronary risk factors were similar in these three groups.
CONCLUSIONS: Plasma leptin levels are correlated with insulin resistance and may be associated with coronary artery disease.
METHODS: Plasma leptin levels and insulin resistance, assessed by the hyperinsulinemic euglycemic clamp technique, were measured in control subjects (n = 12, mean age 62 +/- 10 years), and in patients with obstructive coronary artery disease (n = 15, mean age 64 +/- 8 years) or vasospastic angina (n = 12, mean age 62 +/- 12 years).
RESULTS: Plasma leptin levels were significantly higher (p < 0.017) in patients with obstructive coronary artery disease (8.4 +/- 2.7 ng/ml) and vasospastic angina (7.9 +/- 2.1 ng/ml) than in patients without obstructive coronary artery disease (4.7 +/- 1.4 ng/ml). Mean glucose infusion rate was significantly (p < 0.017) lower in patients with obstructive coronary artery disease (4.39 +/- 1.78 mg/kg/min) and vasospastic angina (3.57 +/- 1.72 mg/kg/min) than in patients without obstructive coronary artery disease (8.74 +/- 1.05 mg/kg/min). The plasma levels of leptin were negatively correlated with mean glucose infusion rate (r = -0.67, p < 0.01). The other coronary risk factors were similar in these three groups.
CONCLUSIONS: Plasma leptin levels are correlated with insulin resistance and may be associated with coronary artery disease.