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Analyzing the Permeability of the Blood-Brain Barrier by Microbial Traversal through Microvascular Endothelial Cells
Published on: February 14, 2020
Change in blood-brain barrier permeability during pediatric diabetic ketoacidosis treatment
Monica S Vavilala1, Todd L Richards, Joan S Roberts
1Department of Anesthesiology, University of Washington, Seattle, WA, USA. Vavilala@u.washington.edu
Insights
Blood-brain barrier permeability increased in children during treatment for diabetic ketoacidosis. The frontal brain region showed the most significant increase in permeability.
Area of Science:
- Pediatric neurology
- Neuroscience
- Endocrinology
Background:
- Cerebral edema is a serious complication of pediatric diabetic ketoacidosis.
- Understanding blood-brain barrier (BBB) function during treatment is crucial.
Purpose of the Study:
- To investigate changes in blood-brain barrier permeability during the treatment of diabetic ketoacidosis in children.
Main Methods:
- Prospective observational study involving 13 children with diabetic ketoacidosis.
- Serial contrast-enhanced perfusion and diffusion MRI scans were performed.
- Blood-brain barrier permeability was assessed using permeability ratio and % permeability ratio change.
Main Results:
- Blood-brain barrier permeability increased from initial treatment to recovery in most subjects.
- Whole brain permeability ratio increased by 160%.
- The frontal cortex exhibited the greatest regional increase in permeability (148%).
Conclusions:
- Blood-brain barrier permeability generally increases during diabetic ketoacidosis treatment in children.
- The frontal brain region demonstrates higher permeability compared to other examined areas.
Objective:
Cerebral edema is a devastating complication of pediatric diabetic ketoacidosis. We aimed to examine blood-brain barrier permeability during treatment of diabetic ketoacidosis in children.
Design:
Prospective observational study.
Setting:
Seattle Children's Hospital, Seattle, WA.
Patients:
Children admitted with diabetic ketoacidosis (pH <7.3, HCO3 <15 mEq/L, glucose >300 mg/dL, and ketosis).
Interventions:
None.
Measurements And Main Results:
Subjects underwent two serial paired contrast-enhanced perfusion (gadolinium) and diffusion magnetic resonance imaging scans. Change in whole brain and regional blood-brain barrier permeability (permeability ratio*100 and % permeability ratio change) between illness and recovery were determined. Time 0 reflects start of insulin treatment. Thirteen children (median age 10.0 +/- 1.1 yrs; seven female) with diabetic ketoacidosis were enrolled. Permeability ratio increased from time 1 (first magnetic resonance image after time 0) to time 2 (second magnetic resonance image after time 0) in the frontal cortex (ten of 13 subjects), occipital cortex (ten of 13 subjects), and basal ganglia (nine of 13). Whole brain permeability ratio increased from time 1 to time 2 (160%) and regional increase in permeability ratio was greatest in the frontal cortex (148%) compared with the occipital cortex (128%) and basal ganglia (112%).
Conclusions:
Overall, whole brain and regional blood-brain barrier permeability increased in most subjects during diabetic ketoacidosis treatment. The frontal region had more blood-brain barrier permeability than other brain regions examined.
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