Related Experiment Videos
Pathogenesis of NIDDM in Pima Indians
C Bogardus1, S Lillioja, P H Bennett
1Clinical Diabetes and Nutrition Section, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Phoenix, Arizona 85016.
Diabetes Care
|July 1, 1991
Summary
Insulin resistance is a key factor in Pima Indians developing impaired glucose tolerance. Subsequent pancreatic failure leads to non-insulin-dependent diabetes mellitus (NIDDM) in this population.
Area of Science:
- Endocrinology
- Metabolic Diseases
- Population Health
Background:
- The Pima Indians in Arizona exhibit the world's highest rates of non-insulin-dependent diabetes mellitus (NIDDM).
- Understanding the metabolic predictors and progression of NIDDM is crucial for public health.
- Previous research highlighted the unique diabetes prevalence in this demographic.
Purpose of the Study:
- To identify metabolic characteristics predicting NIDDM development in Pima Indians.
- To map the sequence of metabolic changes during the progression from normal glucose tolerance to diabetes.
- To investigate the roles of insulin resistance and pancreatic function.
Main Methods:
- Initiated a combined cross-sectional and longitudinal study in 1982.
- Monitored metabolic profiles of the Pima Indian population over time.
- Analyzed data to correlate metabolic markers with diabetes onset and progression.
Main Results:
- Preliminary findings indicate insulin resistance as a primary metabolic abnormality.
- Insulin resistance appears to predispose individuals to impaired glucose tolerance.
- The progression to diabetes is associated with subsequent pancreatic functional decline.
Conclusions:
- Insulin resistance is a critical early metabolic defect in NIDDM pathogenesis among Pima Indians.
- Impaired glucose tolerance precedes overt diabetes, driven by insulin resistance.
- Pancreatic beta-cell dysfunction plays a significant role in the transition to diabetes.