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In the Biolo study 52 in their patients, whole body skeletal muscle released 19 g of glutamine per day into the bloodstream before GH administration. After GH administration, glutamine release from skeletal muscle decreased by 50%, whereas at the whole body level, glutamine clearance tended to decrease by 15%.
[So glutamine which is very important to the immune system & is urgently needed in times or severe trauma is not really made available. This in part may be the reason why death occurs in critically ill patients given GH.]
The obvious solution for this potential side effect of growth hormone treatment in critically ill patients is to simultaneously administer exogenous glutamine to offset the decreased availability of the endogenous amino acid.
[This also is a lesson for those seeking muscle anabolism while using GH. Less glutamine is synthesized and thus available in the presence of GH. Thus supplementation with glutamine should increase the potential for anabolism.]
[So glutamine which is very important to the immune system & is urgently needed in times or severe trauma is not really made available. This in part may be the reason why death occurs in critically ill patients given GH.]
The obvious solution for this potential side effect of growth hormone treatment in critically ill patients is to simultaneously administer exogenous glutamine to offset the decreased availability of the endogenous amino acid.
[This also is a lesson for those seeking muscle anabolism while using GH. Less glutamine is synthesized and thus available in the presence of GH. Thus supplementation with glutamine should increase the potential for anabolism.]
Bron:
52 - Biolo G. et al., Growth hormone decreases muscle glutamine production and stimulates protein synthesis in hypercatabolic patients, Am J Physiol Endocrinol Metab 279: E323–E332, 2000