Diabetes, nephropathy, and the renin system.

Blockade of the renin-angiotensin system has become crucial in the management of type 1 (insulin-dependent) and type 2 (non-insulin-dependent) diabetes mellitus, especially in patients who are at risk of nephropathy. In this review, we address the issue of why the renin system and its blockade are so important. As in many complex processes, diabetic nephropathy reflects an interaction between genetic factors and environmental factors. Recent research has uncovered a number of environmental factors; control of these factors should contribute to improved management. The renin system is important in patients with diabetes mellitus because so many relevant factors converge on the intrarenal renin system.