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Old 04-27-2011
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Question Brain vs RBCs main source of energy??

What is main source of energy for brain DURING the fed state?

1) Proteins
2) Carbohydrates
3) Fats
4) ONLY GLUCOSE
5) Ketones


AND DURING STARVATION?
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Old 04-27-2011
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I would say
Normal meals = Only Glucose
During Starvation = ketones
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Old 04-27-2011
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Yes I agree, Its ONLY GLUCOSE during the meals and in a fasting or starvation state its glucose from the glycogenolysis (as long as possible) and after that it switches to ketone bodies!
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Old 04-27-2011
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Normal meals= Glucose
Starvation= 2/3 ketones & 1/3 Glucose
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Old 04-27-2011
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Yes, Bebix is 100% right.
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Old 04-27-2011
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so what u guys think of RBCs ...source of energy

DURING FED STATE and STARVATION

1)PROTEIN
2)KETONES
3)ONLY GLUCOSE
4)FAT
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Old 04-27-2011
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Quote:
Originally Posted by ikrimachoudry View Post
so what u guys think of RBCs ...source of energy

DURING FED STATE and STARVATION

1)PROTEIN
2)KETONES
3)ONLY GLUCOSE
4)FAT
RBC's is only glucose during both well fed state & starvation.

Gah Im forgetting biochem

End up producing Lactic Acid which undergoes Corri's cycle.
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Old 04-27-2011
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RBC's never use ketone bodies
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Old 04-27-2011
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WHY RBCs AND BRAIN CANT USE FATTY ACIDS

AS SOURCE OF ENERGY....

GIVE TWO REASONS
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Old 04-01-2013
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RBC's can't use fatty acids because they don't have a mitochondria.

The brain can't use fatty acids because fatty acids can't cross the Blood Brain Barrier.
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