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  • Title: Hypertension and insulin resistance.
    Author: Prichard BN, Smith CC, Sen S, Betteridge DJ.
    Journal: J Cardiovasc Pharmacol; 1992; 20 Suppl 11():S77-84. PubMed ID: 1284147.
    Abstract:
    Insulin resistance and hyperinsulinemia is now recognized in non-insulin-dependent diabetes, essential hypertension, obesity, atherosclerotic heart disease, dyslipidemia, heart failure, and in heavy smokers. Several mechanisms have been proposed to explain hyperinsulinemia, insulin resistance and its relationship to hypertension; reduced sodium excretion, activation of the sympathetic nervous system, increased activity of the sodium/hydrogen pump, and stimulation of cellular growth. Some of the nonpharmacological methods to control hyperinsulinemia are of benefit in the management of hypertension, most notably weight loss, exercise program, and reduced salt intake. High-fiber and reduced-protein diets also reduce hyperinsulinemia. Thiazide diuretics can result in insulin resistance, and insulin secretion may be inhibited, possibly associated with concomitant hypokalemia. beta-Blockers result in some reduction of glucose tolerance and mask some of the features of hypoglycemia. Angiotensin-converting enzyme (ACE) inhibitors and alpha-receptor blockers do not effect insulin resistance; probably the same is true for calcium antagonists. Although the effect on risk factors should not be discounted, it is the effect of treatment on hard end points, cerebrovascular accidents, myocardial infarction, or death that is most important. Evidence in hypertension is at present restricted to diuretics and beta-blocking drugs.
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