Table 1.

Main glucose transport (GLUT) isoforms in the brain.

Glucose transport isoforms	Location	Cell types	Abundance	Control
GLUT-1	Ubiquitous	Glia and endothelial	Very abundant	Hypoglycemia, insulin
GLUT-2	Hypothalamus	Neurons, glia, and tanycytes	Limited
GLUT-3	Cerebellum, striatum, cortex, and hippocampus	Neurons, glia, and endothelial	Very abundant
GLUT-4	Olfactory bulb, hippocampus (dentate gyrus), and hypothalamus cerebellum	Neurons and glia	Selective areas	Glucose, insulin and exercise training
GLUT-8	Hypothalamus, cerebellum, brainstem, hippocampus, dentate gyrus, amygdala, and primary olfactory cortex	Neurons: bodies and proximal apical dendrites	Limited	Glucose