Are effects of antihypertensive treatment on lipoproteins merely “side-effects”?
Thirty-seven patients with a supine systolic blood pressure greater than 160 and/or a diastolic blood pressure greater than 95 mmHg were enrolled in the study and treated for 6 months with prazosin and 6 months with metoprolol (in random order). Neither the systolic nor the diastolic blood pressures differed after the two types of treatment (median difference 0/0 mmHg). The mean and median differences in serum cholesterol, however, were 0.4 and 0.3 mmol/l respectively, which were 9 and 5% of the pretreatment values. The corresponding differences in the atherogenic index (in which cholesterol in high density lipoproteins is integrated) were 10 and 8% of the pretreatment values. This difference in the metabolic response to the two drugs at the same blood pressure level is most probably of importance in the long-term prevention of ischaemic heart disease, for which high levels of serum cholesterol and atherogenic index are major risk factors.
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