Progressive multifocal leukoencephalopathy--progress made and lessons relearned.
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Autoimmune diabetes is due to destruction of insulin-secreting beta islet cells by an immune-mediated process, which is induced and promoted by the interaction of genetic and environmental factors. This form of diabetes is one of a group of autoimmune diseases that affect about 10% of the population in the developed world. The detection of diabetes-associated autoantibodies, including glutamic acid decarboxylase antibodies (GADA), islet cell antibodies (ICA), and insulinoma-associated (IA-2) autoantibodies is widely held to reflect an underlying autoimmune pathology but the clinical features associated with the presence of these diabetes-associated autoantibodies is highly variable ranging from lack of symptoms with normal glucose tolerance to catastrophic and potentially fatal diabetic ketoacidosis. It is the purpose of this article to establish the range of metabolic features associated with diabetes-associated autoimmune changes and discuss how this metabolic spectrum itself reflects a spectrum of immune and clinical changes that cast light on the nature of autoimmune diabetes.
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BACKGROUND: The effect of angiotensin-converting enzyme (ACE) inhibitors in slowing the decline in renal function in nondiabetic renal disease varies among studies. PURPOSE: To use meta-analysis to assess the effect of ACE inhibitors on the development of end-stage renal disease caused by factors other than diabetes. DATA SOURCES: The English-language medical literature, identified by a MEDLINE search and unpublished studies. STUDY SELECTION: All randomized studies that compared ACE inhibitors with other antihypertensive agents and had at least 1 year of planned follow-up were selected. Studies of diabetic renal disease and renal transplants were excluded. A total of 1594 patients in 10 studies was included. DATA EXTRACTION: Data on end-stage renal disease, death, drop out, and blood pressure were extracted. Study investigators confirmed results and provided additional data. DATA SYNTHESIS: Among 806 patients receiving ACE inhibitors, 52 (6.4%) developed end-stage renal disease and 17 (2.1%) died; in the 788 controls, the respective values were 72 (9.1%) and 12 (1.5%). The pooled relative risks were 0.70 (95% CI, 0.51 to 0.97) for end-stage renal disease and 1.24 (CI, 0.55 to 2.83) for death; the studies were not significantly heterogeneous. The decreases in weighted mean systolic and diastolic blood pressures during follow-up were 4.9 and 1.2 mm Hg greater, respectively, in the patients who received ACE inhibitors. CONCLUSIONS: Angiotensin-converting enzyme inhibitors are more effective than other antihypertensive agents in reducing the development of end-stage nondiabetic renal disease, and they do not increase mortality. It could not be determined whether this beneficial effect is due to the greater decline in blood pressure or to other effects of ACE inhibition.
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