Demonstration of defective glucose uptake and storage in erythrocytes from non-insulin dependent diabetic patients and effects of metformin.

1. Red blood cells can store glucose and may thus participate in blood glucose homeostasis. We investigated if a defect in this process exists in non-insulin dependent diabetes (NIDD).

[Essential arterial hypertension. Effects of labetalol on blood pressure and renin-angiotensin system (author's transl)].

The effects of labetalol, an alpha- and beta-adrenoceptor blocking drug, on blood pressure, heart rate, plasma renin activity (PRA) and plasma aldosterone were studied in 17 adult patients with essential hypertension. Following a total dose of 1 g labetalol administered over a 48-hour period, there was a rapid and significant fall in systolic and diastolic BP averaging 16,5 +/- 7,9%/14,8 +/- 7,5% respectively supine, 18,7 +/- 8,3%/17,8 +/- 7,2% standing and 23,9 +/- 7,1%/16,8 +/- 10,3% after moderate exercise; 24 hours after labetalol was discontinued, the BP had gone up but was still below pretreatment values. Bradycardia remained slight throughout.