Do fetal Down syndrome brains exhibit aberrant levels of neurotransmitters critical for normal brain development?
Serotonin, gamma-aminobutyric acid, taurine, and dopamine are critical for the acquisition of brain morphologic features, neuronal and glia proliferation, and synapse formation. The detected reductions in the levels of these neurotransmitters may indicate potential mechanisms for the observed dysfunctional neuronal development in the Down syndrome fetal brain.
In the present study of type 2 diabetic patients, DAN is a significant independent risk factor for the occurrence of stroke. This may occur due to accelerated cerebral vascular damage and alterations in the regulation of cerebral blood flow in diabetic patients with DAN.