Research Design and Methods:Twenty participants with type 1 diabetes (T1D) (age
14.64 ±1.78 years) and 20 age-matched healthy controls (age 14.40± 2.82 years) performed
two functional magnetic resonance imaging sessions. Participants with T1D
performed the first scanning session under euglycemic and the second under
hyperglycemic clamp (20 mmol/L (360 mg/dL)).
Results: Lower spatial working memory (sWM)
capacity during acute hyperglycemia and significant differences in activation
of regions of interest during different stages of the spatial working memory task
(p=0.014) were observed.
Conclusions: Acute hyperglycemia
negatively affected sWM capacity in adolescents with T1D, which is relevant for
daily functioning and academic performance.
Funding
The study was supported in part by the Slovenian Research Agency grants # P3-0019, P3-0343, J7-9411, J7-1820 and University Medical Center Ljubljana Research grants 20180032 and 20190185. Funding sources were not involved in the collection, analysis, or interpretation of any data; in the writing of the report; or in the decision to submit the article for publication.