Brain energy sources

The net effects of these actions include enhanced growth due to protein synthesis enhanced availability of fatty acids for use by skeletal muscle as an energy source and glucose sparing for the brain, which can use only this nutrient molecule as a source of energy. 

The main source of brain energy metabolism is the continuous availability of glucose from the blood. To some extent, energy can be derived from glycogen, stored in astrocytes. Neurons also use lactate as an energy source, even under normoxic conditions. During neuronal activation, lactate may even be the... 

Mankind Multiple new uses of chemicals and energy sources. Use of external space Fully developed self-conscious brains... 

Cells that do not have mitochondria (such as red blood cells) must use glucose for energy since they have no TCA cycle or oxidative phosphorylation. Without a constant glucose supply, these cells would die. The brain relies heavily on glucose metabolism for energy however, the brain can adapt to use alternative energy sources if glucose is not available. 

Brain Brain does not burn fat as an energy source however, after adapting to long-term starvation, brain can use ketone bodies for fuel. 

Metabolized in other tissues, including brain, as an energy source... 

Acetoacetate and D-j8-hydroxybutyrate exported as energy source for heart, skeletal muscle, kidney, and brain... 

FIGURE 23-20 Energy sources in the brain vary with nutritional state. The ketone body used by the brain is /3-hydroxybutyrate. 

Provides alternative to glucose as energy source for brain... 

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