Many anti-diabetic drugs with different mechanisms of action are now available for treatment of type 2 diabetes mellitus. Sulfonylureas have been extensively used for treatment of type 2 diabetes for nearly 50 years and, even in our times, are widely used for treatment of this devastating chronic illness. Here, we review some of the available data on sulfonylureas, evaluating their mechanism of action and their effects on glycemic control. We can conclude that sulfonylureas are still the most used anti-diabetic agents: maybe this is due to their lower cost, to the possibility of mono-dosing and to the presence of an association with metformin in the same tablet. However, sulfonylureas, especially the older ones, are linked to a greater prevalence of hypoglycemia, and cardiovascular risk; newer prolonged-release preparations of sulfonylureas are undoubtedly safer, mainly due to reducing hypoglycemia, and for this reason should be preferred.
Immunosuppression with corticosteroids and cyclophosphamide is the standard of care for lupus nephritis. We report a 19-year old woman with lupus nephritis and nephrotic syndrome who had not achieved complete remission after treatment with 15.7 g cyclophosphamide and 13.7 g prednisone. We planned a consolidation phase with: 1) cyclophosphamide 20 mg/kg i.v. every 28 days for three cycles; 2) anti-CD20 chimeric monoclonal antibody (rituximab) 375 mg/m2 i.v. weekly for four weeks; and 3) slow tapering of prednisone p.o., q.o.d., after a reinduction dose during rituximab administration. At the end of this phase the patient achieved complete remission. An indefinite maintenance treatment with methotrexate, cyclosporin and low-dose prednisone was then started. Twenty-four months later the patient remains in remission. In the immunosuppressive treatment of lupus nephritis the insertion of a consolidation phase with rituximab combined with cyclophosphamide achieves a therapeutically important and lasting deletion of the lymphocyte clone responsible for autoimmunity.
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