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2016 ; 95
(36
): e4803
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
Increased GABA concentrations in type 2 diabetes mellitus are related to lower
cognitive functioning
#MMPMID27603392
van Bussel FCG
; Backes WH
; Hofman PAM
; Puts NAJ
; Edden RAE
; van Boxtel MPJ
; Schram MT
; Stehouwer CDA
; Wildberger JE
; Jansen JFA
Medicine (Baltimore)
2016[Sep]; 95
(36
): e4803
PMID27603392
show ga
Type 2 diabetes mellitus is associated with accelerated cognitive decline. The
underlying pathophysiological mechanisms still remain to be elucidated although
it is known that insulin signaling modulates neurotransmitter activity, including
inhibitory ?-aminobutyric acid (GABA) and excitatory glutamate (Glu) receptors.
Therefore, we examined whether levels of GABA and Glu are related to diabetes
status and cognitive performance.Forty-one participants with type 2 diabetes and
39 participants without type 2 diabetes underwent detailed cognitive assessments
and 3-Tesla proton MR spectroscopy. The associations of neurotransmitters with
type 2 diabetes and cognitive performance were examined using multivariate
regression analyses controlling for age, sex, education, BMI, and percentage
gray/white matter ratio in spectroscopic voxel.Analysis revealed higher GABA+
levels in participants with type 2 diabetes, in participants with higher fasting
blood glucose levels and in participants with higher HbA1c levels, and higher
GABA+ levels in participants with both high HbA1c levels and less cognitive
performance.To conclude, participants with type 2 diabetes have alterations in
the GABAergic neurotransmitter system, which are related to lower cognitive
functioning, and hint at the involvement of an underlying metabolic mechanism.