Effect of insulin on plasma vascular endothelial growth factor in children with new-onset diabetes
Ambika Ashraf1, Gail Mick, Sreelatha Meleth
1Department of Pediatrics/Division of Pediatric Endocrinology and Metabolism, The Children's Hospital, University of Alabama at Birmingham, ACC 608, 1600 Seventh Avenue South, Birmingham, Alabama 35233, USA. aashraf@peds.uab.edu
Insights
In new-onset diabetes, elevated vascular endothelial growth factor (VEGF) is linked to hyperglycemia. Insulin treatment effectively reduces VEGF levels and improves glycemic control in children with diabetes.
Area of Science:
- Pediatric Endocrinology
- Vascular Biology
- Metabolic Disorders
Background:
- Vascular endothelial growth factor (VEGF) is implicated in diabetic complications.
- Hyperglycemia is a key factor in the development of diabetes-related issues.
Purpose of the Study:
- To investigate the impact of insulin therapy and glycemic control on plasma VEGF levels in children newly diagnosed with diabetes.
- To explore the correlation between plasma VEGF and random plasma glucose levels.
Main Methods:
- A prospective study involving 19 children with new-onset diabetes (ages 3-18).
- Plasma VEGF levels were measured before and after insulin treatment.
- Comparison with 55 healthy children with idiopathic short stature.
Main Results:
- Children with new-onset diabetes showed significantly higher plasma VEGF levels compared to controls.
- Insulin treatment led to a significant decrease in both plasma VEGF and hemoglobin A1c levels.
- A strong correlation was observed between reduced plasma VEGF and improved hemoglobin A1c.
Conclusions:
- Hyperglycemia and insulin deficiency in new-onset diabetes are associated with elevated plasma VEGF.
- Insulin therapy can mitigate high plasma VEGF levels in children with diabetes.
- VEGF may play a role in the early stages of diabetic complications.
Context:
Considerable experimental evidence inculpates vascular endothelial growth factor (VEGF) as one of the candidate factors providing a mechanistic link between hyperglycemia and diabetic complications.
Aim:
The aim of the study was to assess the effect of insulin treatment and glycemic control on plasma VEGF levels in children with new-onset diabetes.
Methods:
This prospective study assessed the changes in plasma VEGF levels after treatment of diabetes with insulin. We also aimed to ascertain whether there was any correlation between plasma VEGF levels and simultaneous random plasma glucose. The study comprised 19 children with new-onset diabetes mellitus between the ages of 3 and 18 yr. The control group comprised 55 healthy nondiabetic children with idiopathic short stature.
Results:
Plasma VEGF concentrations were significantly elevated in children at diagnosis of diabetes, compared with healthy controls (P < 0.0002). Plasma VEGF levels (P < 0.01) and hemoglobin A(1C) (P < 0.0001) declined in diabetic children after insulin treatment. There was a highly significant correlation between reduction in plasma VEGF levels and hemoglobin A1C levels (r = 0.65, P = 0.0037). We did not find any correlation between the simultaneous plasma glucose values and basal VEGF.
Conclusions:
Presence of hyperglycemia and/ or insulin deficiency in children with new-onset of diabetes is associated with plasma VEGF elevation, even at the outset of disease, and this can be mitigated by insulin therapy.
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