Non-insulin dependent diabetes--the past, present and future

Area of Science:

• Endocrinology and Metabolism
• Genetics
• Public Health

Background:

• Diabetes mellitus, historically defined by glycosuria, has evolved from its discovery to understanding its complex mechanisms.
• The identification of insulin and the concept of insulin resistance have been pivotal in diabetes research.
• Non-insulin dependent diabetes (NIDDM) affects over 90% of diabetes cases globally, posing significant health challenges.

Purpose of the Study:

• To review the historical progression of diabetes understanding, focusing on NIDDM.
• To highlight the pathophysiology of NIDDM, including insulin resistance and secretion defects.
• To discuss current and future strategies for NIDDM prevention and management, including lifestyle modifications and pharmacological interventions.

Main Methods:

• Historical review of diabetes research and discovery.
• Analysis of epidemiological data on NIDDM prevalence and risk factors.
• Summary of findings from major clinical trials like the Diabetes Control and Complications Trial (DCCT).
• Overview of genetic research in NIDDM, including candidate gene studies and positional cloning.

Main Results:

• NIDDM is characterized by insulin resistance and subsequent defects in insulin secretion.
• Microvascular complications are linked to hyperglycemia intensity and duration, reducible by intensive glucose control.
• Macrovascular disease, including hypertension and dyslipidemia, is accelerated in NIDDM.
• Major risk factors for NIDDM include age, obesity, inactivity, and genetics.

Conclusions:

• Effective management of NIDDM requires addressing hyperglycemia and cardiovascular risk factors.
• Lifestyle interventions and novel drug classes show promise in delaying or preventing NIDDM.
• Ongoing genetic research aims to identify specific loci and mutations contributing to NIDDM susceptibility.