Abstract: Methods and compositions for preserving the function of insulin-producing cells and to furthering the lifespan of insulin-producing cells in non-insulin dependent patients with insulin-related disorders are provided.

Abstract: Methods related to the treatment of diabetes and improving the control of blood glucose levels are provided. In particular, methods are provided for effectively reducing postprandial glucose excursions while reducing the incidence of clinically significant late postprandial hypoglycemia by administered an insulin composition in a form suitable for pulmonary administration. Additionally, methods for effectively reducing post-prandial glucose excursions while reducing the incidence of clinically significant late postprandial hypoglycemia by administered an insulin composition in a form suitable for pulmonary administration along with a long-acting basal insulin.

Abstract: Provided herein are compositions of 1) diketopiperazine salts of PDE5 inhibitors, and 2) DKP microparticles having a PDE5 inhibitors thereon, as well as methods for the pulmonary delivery of these compositions for the treatment of pulmonary hypertension and sexual dysfunction(s).

Abstract: Methods are provided for reducing serum proinsulin levels, lessening post-prandial pancreatic stress, and reducing risk factors for atherosclerosis in subjects with diabetes mellitus, type 2. The method includes administration of insulin in a manner that mimics the meal-related first phase insulin response, using a dose sufficient to reduce serum levels of proinsulin. In some embodiments of the method insulin administration is commenced early in the course of the disease. Mimicking first phase kinetics, peak serum insulin levels can be reached within about 18 minutes of administration. In increasingly preferred embodiments peak serum insulin levels can be reached within about 15, 12, or 10 minutes of administration. Serum insulin levels return to baseline within about two hours of administration.