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To: aruanan

Fine, Couldn’t leave it so...

here...

http://www.livestrong.com/article/273899-do-fat-protein-turn-into-glucose/

Fat and protein can both be converted into glucose if necessary through a process called gluconeogenesis. The use of proteins or fat for gluconeogenesis requires more energy than the more straightforward metabolism of starches and sugar into glucose.
Identification

Gluconeogenesis occurs when additional glucose is needed by your body, such as after a bout of intense exercise. Glucose obtained from the breakdown of fats and proteins is the only kind of energy that the brain, testes and kidney medulla can use. It is also the only form of energy that your erythrocytes, or red blood cells, can use for their own source of energy.

Read more: http://www.livestrong.com/article/273899-do-fat-protein-turn-into-glucose/#ixzz1kahl9Rwf

AND there are more articles concerning protein, I am sure you have taken classes.

But I can still show you that there can be more learning to do.

I would like to end this on a good note.

Stay safe, and God be with you.


78 posted on 01/26/2012 10:54:08 AM PST by ConfidentConservative (If my people shall humble themselves and pray,I will hear from Heaven and heal their land.)
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To: ConfidentConservative
Thanks for catching that. I'll blame it on low blood sugar. Ha ha. The CNS survival mechanism of gluconeogenesis. The point is that it takes place mostly in a state of fasting (or starvation) in order to provide the brain with enough glucose to stay alive in the absence of dietary glucose. The amino acids it uses in the process are not from dietary proteins but those diverted from normal amino acid turnover as well as scavenged from the catabolism of (mostly) skeletal muscle. Like its counterpart that synthesizes fat, it is a mechanism of extremes of dietary level: gluconeogenesis in starvation to protect the brain and kidney from lack of glucose; lipogenesis in hypernutrition to protect the body from too much glucose.

So, although a large portion of dietary amino acids in proteins can be used in the TCA cycle (as well as amino acids scavenged from breakdown of skeletal muscle during starvation), they aren't shunted into gluconeogenesis when someone is in a nutritionally replete state. In a non-fasting state, proteins are broken down into amino acids. Some of the amino acids are used in the continual process of protein synthesis. Those in excess of this are deaminated and then used as fuel. The same amino acids that can provide the precursors for gluconeogenesis are also those that, after deamination, can be converted to intermediates that can enter the TCA cycle, as does the pyruvate that comes from glycolysis, but they are not turned into glucose first in order to enter the glycolytic pathway to form pyruvate for the TCA cycle, except under more extreme conditions, such as fasting or starvation.
80 posted on 01/26/2012 6:45:06 PM PST by aruanan
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