Some patients with type 2 diabetes mellitus (T2DM) have severe insulin resistance. Their insulin requirements are significantly greater. These patients need to take 2-3 injections at the same time to take the correct insulin dose or to redial the insulin pen. When daily insulin requirements are in excess of 300 units/day, the volume of the injected insulin becomes an issue. Large-volume injection can cause discomfort and lead to poor concordance with treatment. Using high-strength insulin e.g. U-500 insulin can reduce the volume of the injected insulin. Despite publications of small case reports or case series, no universal guidelines exist on the use of U-500 insulin. We discuss common sense approaches when considering the use of U-500 insulin in clinical practice.
Some patients with type 2 diabetes mellitus (T2DM) are profoundly insulin resistant and require large insulin doses to achieve optimal glycaemic control. However, large volumes of subcutaneous conventional U-100 insulin can cause discomfort at the injection site, resulting in poor concordance with insulin therapy. One therapeutic option is the use of U-500 insulin, thus reducing the insulin volume by 80%. This review will address the practical issues associated with the use of U-500, clinical efficacy and safety aspects of this concentrated insulin, which has an important role in a subgroup of patients with T2DM.
TZDs exhibit significant beneficial effects on aorto-carotid atherosclerosis when assessed using prospectively validated non-invasive techniques. Inferring clinical benefit in the absence of confirmatory outcome trials is questionable and caution should be exercised when interpreting intervention data with surrogate endpoints. TZD-induced congestive cardiac failure or other unknown PPAR-gamma adverse effects are plausible explanations for the conflicting results of intervention trials using markers of atherosclerosis and clinical event outcomes.
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