Serum immunoreactive trypsin concentrations in diabetic children

Area of Science:

• Pediatric Endocrinology
• Metabolic Disorders
• Biochemistry

Background:

• Diabetes mellitus is a chronic metabolic disorder affecting children worldwide.
• Pancreatic function, including trypsin production, may be altered in diabetic patients.
• Serum immunoreactive trypsin (SIT) is a marker of exocrine pancreatic function.

Purpose of the Study:

• To investigate serum immunoreactive trypsin (SIT) concentrations in children with recent-onset diabetes.
• To compare SIT levels in diabetic children with established reference ranges.
• To explore factors influencing SIT levels, such as age and duration of diabetes.

Main Methods:

• Serum samples were collected from 616 children diagnosed with recent-onset diabetes.
• SIT concentrations were measured using a standard assay.
• Results were compared to reference ranges from non-diabetic, non-infectious individuals.

Main Results:

• Children with recent-onset diabetes exhibited significantly lower mean SIT concentrations than reference ranges.
• Mean SIT levels were approximately 60% of reference levels within three weeks of onset, decreasing to 40% at six months.
• About 10% of patients had very low or undetectable SIT levels, more common in older children (6-15 years) and at 5-6 months post-onset.
• Very low SIT levels were often transient, as indicated by repeat testing.

Conclusions:

• Recent-onset diabetes in children is associated with reduced exocrine pancreatic function, indicated by low SIT levels.
• The decrease in SIT levels appears to worsen over the first six months after diabetes onset.
• A subset of children, particularly older ones, may experience profound and potentially temporary reductions in pancreatic trypsin secretion.