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Doxazosin improves insulin sensitivity in hypertensive patients
S Kageyama1, J Yamamoto, A Mimura
1Department of Internal Medicine (III), Jikei University School of Medicine, Tokyo, Japan.
Clinical Therapeutics
|September 1, 1993
Summary
Hypertensive patients often exhibit insulin resistance. Doxazosin therapy significantly improved insulin sensitivity and glucose disposal rates in hypertensive individuals, suggesting a beneficial effect on metabolic health.
Area of Science:
- Cardiovascular Pharmacology
- Metabolic Syndrome Research
- Hypertension Management
Background:
- Hypertension is frequently associated with insulin resistance.
- Understanding the metabolic effects of antihypertensive drugs is crucial for comprehensive patient care.
Purpose of the Study:
- To investigate the impact of doxazosin on insulin sensitivity in hypertensive patients.
- To compare insulin sensitivity between hypertensive and normotensive individuals.
Main Methods:
- Hyperinsulinemic/euglycemic clamp technique used to measure glucose disposal rate.
- 10 hypertensive patients and 7 normotensive controls studied before and after 12 weeks of doxazosin therapy.
- Blood pressure and serum insulin levels monitored throughout the study.
Main Results:
- Doxazosin significantly reduced blood pressure in hypertensive patients (P < 0.001 for systolic, P < 0.01 for diastolic).
- Glucose disposal rate significantly increased after doxazosin treatment (P < 0.02), indicating improved insulin sensitivity.
- Hypertensive patients demonstrated lower insulin sensitivity compared to normotensive controls (P < 0.01).
Conclusions:
- Hypertensive patients exhibit insulin resistance.
- Doxazosin therapy effectively improves insulin sensitivity in hypertensive individuals.
- Doxazosin may offer metabolic benefits beyond blood pressure reduction.