[The Discovery of Insulin]

Area of Science:

• Endocrinology and Metabolism
• Biochemistry
• Medical History

Background:

• Diabetes mellitus was a fatal disease prior to the isolation of insulin.
• The pancreatic extracts' potential for blood sugar regulation was recognized.

Purpose of the Study:

• To isolate and purify a pancreatic extract with blood sugar-lowering properties.
• To develop clinical applications for the discovered insulin.
• To trace the historical advancements in insulin therapy and production.

Main Methods:

• Experimental diabetes induction in dogs.
• Extraction and purification of pancreatic compounds.
• Clinical trials and therapeutic application of insulin extracts.
• Advancements in insulin structure elucidation, measurement, purification, and biotechnological production.

Main Results:

• Successful demonstration of blood sugar reduction in diabetic dogs using pancreatic extracts.
• Development of the first clinical applications of insulin in early 1922.
• Nobel Prizes awarded for the discovery of insulin and subsequent research on its structure and measurement.
• Evolution of insulin production from animal sources to biotechnological methods, including insulin analogues.

Conclusions:

• The discovery of insulin marked a pivotal moment in medical history, transforming diabetes from a terminal illness to a manageable condition.
• Continuous innovation in insulin therapy, including purification, biotechnology, and delivery systems, has significantly improved patient outcomes and quality of life.
• Modern intensive insulin therapy relies on a variety of insulin formulations, advanced application devices, and glucose monitoring technologies.