Summary
The blood pressure response to infused angiotensin II (0.3 to 3 ng · kg−1 · min −1) was investigated in six normotensive patients with Type 1 (insulin-dependent) diabetes free of complications and in six healthy subjects matched for age, sex and weight. Basal blood pressures (111/68 and 114/72 mmHg) and basal plasma angiotensin II levels (18.0±5.2 and 14.1±2.4 pmol/l; mean + SD) were similar in the diabetic and control groups as were 24 h urinary excretions of sodium (157±88 and 154±84 mmol/24h). Equal increments in plasma angiotensin II were produced during the infusions in the two groups. Increases in both diastolic and systolic blood pressure were significantly greater in the diabetic patients throughout the infusion. Mean diastolic increments were: 6.7 versus 1.3 mmHg (0.3 ng dose), 11.0 versus 6.9 mmHg (1 ng dose) and 16.7 versus 12.3 mmHg (3 ng dose) (p<0.001). Corresponding figures for systolic pressure were: 8.7 versus 1.3mmHg, 10.3 versus 3.7mmHg and 15.3 versus 8.7mmHg (p<0.001). Vasopressor responsiveness to angiotensin II is thus increased in Type 1 diabetic patients without complications; it may, therefore, be a consequence of the diabetes rather than of the presence of microvascular disease or hypertension.
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Drury, P.L., Smith, G.M. & Ferriss, J.B. Increased vasopressor responsiveness to angiotensin II in Type 1 (insulin-dependent) diabetic patients without complications. Diabetologia 27, 174–179 (1984). https://doi.org/10.1007/BF00273801
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DOI: https://doi.org/10.1007/BF00273801