Hypertension, coronary artery disease and insulin resistance--linked disorders with an impact on treatment
C M Florkowski1, J Harrison, M J Kendall
1Queen Elizabeth Hospital, Birmingham, U.K.
Insights
Hypertension increases coronary artery disease risk, partly via hyperinsulinemia. Some blood pressure drugs worsen this, potentially increasing heart risks.
Area of Science:
- Cardiology
- Endocrinology
- Pharmacology
Background:
- Hypertension is a major risk factor for coronary artery disease (CAD).
- Antihypertensive therapies have not consistently reduced CAD event incidence.
- Hypertension is linked to hyperinsulinemia, obesity, and type 2 diabetes.
Purpose of the Study:
- To explore the relationship between hypertension and hyperinsulinemia.
- To explain how elevated plasma insulin accelerates CAD.
- To inform antihypertensive drug selection based on these links.
Main Methods:
- Review of existing literature on hypertension, hyperinsulinemia, and CAD.
- Analysis of mechanisms linking increased insulin levels to cardiovascular risk.
- Evaluation of the impact of antihypertensive drugs on insulin levels.
Main Results:
- Hypertension is associated with hyperinsulinemia, a state of high insulin levels.
- Certain antihypertensive drugs, like thiazide diuretics, can exacerbate hyperinsulinemia.
- Elevated insulin levels may contribute to the accelerated development of CAD.
Conclusions:
- The link between hypertension and hyperinsulinemia is a critical factor in CAD development.
- Drug selection for hypertension should consider potential effects on insulin levels.
- Understanding these mechanisms may lead to improved prevention and treatment strategies for CAD in hypertensive patients.
Abstract:
Coronary artery disease is a very common disorder for which hypertension is a well-recognized risk factor. However many trials of antihypertensive therapy have failed to demonstrate a reduction in the incidence of coronary events. One explanation is that hypertension is a disorder associated with hyperinsulinaemia, obesity and non-insulin dependent diabetes. Furthermore certain antihypertensive drugs, notably thiazide diuretics, increase the hyperinsulinaemia and thereby increase one of the other coronary risk factors. In this review the links between hypertension and hyperinsulinaemia are explored and the mechanisms whereby an increased plasma insulin can lead to the more rapid development of coronary artery disease are explained. These observations may influence the choice of drugs used to treat hypertension.
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