Glycemic control in early IDDM. The Wisconsin Diabetes Registry

Area of Science:

• Endocrinology
• Metabolic Disorders
• Pediatric Diabetes

Background:

• Longitudinal studies are crucial for understanding the progression of diabetes.
• Glycemic control and self-management are key factors in managing diabetes.
• Type 1 diabetes (IDDM) affects individuals of all ages, with unique challenges in pediatric populations.

Purpose of the Study:

• To evaluate longitudinal glycemic control (GHb) and urinary C-peptide levels in a cohort of individuals with recent-onset IDDM.
• To investigate the relationship between diabetes self-management behaviors and glycemic control.
• To identify specific age and sex subgroups with distinct diabetes progression patterns.

Main Methods:

• A cohort of 277 individuals diagnosed with IDDM, under 30 years old, was followed prospectively.
• Blood samples were collected every 4 months for Hemoglobin A1c (GHb) testing.
• Diabetes self-management aspects were self-reported every 6 months, and 24-hour urine samples were collected for C-peptide analysis.

Main Results:

• Glycemic control, measured by GHb, significantly increased in the first year of diabetes (0.23%/month) but stabilized in the second year for the cohort overall.
• Adolescent males (10-19 years) exhibited higher GHb levels in the second year compared to other subgroups and showed a significant increase in GHb during this period.
• Adolescents had higher initial urinary C-peptide levels, and adolescent males reported fewer daily insulin injections during the second year of diabetes.

Conclusions:

• Glycemic control in IDDM generally stabilizes by the second year post-diagnosis.
• Adolescent males represent an exception, with continued deterioration in glycemic control potentially linked to self-management practices.
• Further research into self-management strategies for adolescent males with IDDM is warranted.