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  • Title: [Relationship of vascular reactivity to blood lipid spectrum and lipid peroxidation in unstable angina].
    Author: Nikolaeva AA, Nikolaev EIu, Nikolaeva EI, Kuroedov AIu, Popova LV.
    Journal: Ter Arkh; 1998; 70(12):13-5. PubMed ID: 10067241.
    Abstract:
    AIM: To examine the relationship between the vascular response of the microcirculatory bed to vasoactive agents and lipid peroxidation (LPO) and antioxidative defense in patients with unstable angina pectoris. MATERIALS AND METHODS: Thirty male patients (mean age 58.0 +/- 2.4 years) were examined. The patients were divided into 2 groups: 1) those with high alpha-cholesterolemia alone and 2) those with high alpha-cholesterolemia concurrent with hyperglyceridemia and elevated total cholesterol levels. Photoplethysmographic determination was used to evaluate vascular responses to norepinephrine (vasopressor function) and histamine (vasodilating function), the blood levels of cortisol, LPO products, antioxidative protection components, histamine, and serotonin. RESULTS: Vascular dilating function was found to be most pronounced in Group 1. Moreover, Group 1 patients had a significant depression of the antioxidative defense system and the highest blood levels of cortisol, and serotonin. The levels of LPO products did not differ significantly in both groups though they were significantly higher than those in healthy individuals. CONCLUSION: Impairment in the antioxidant system and in coordination of vasodilating function to histamine stimulation are typical of patients with unstable angina.
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