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The identification of phosphocreatine in liver
Biochimica et Biophysica Acta, 1951Abstract 1. 1. The nature of the acid-molybdate-labile P compound occurring in trichloracetic acid extracts of livers from guinea pigs treated with carbon tetrachloride has been investigated. 2. 2. On the basis of the P:creatine ratio, the neture and determination of the compounds liberated in the presence of acid-molybdate, and the behaviour
H, BARKER, A H, ENNOR
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Nature, 1947
IT is generally assumed that when phosphocreatine is hydrolysed either enzymatically or spontaneously, the end products are creatine and phosphoric acid. This, however, is not always found to be the case. When phosphocreatine is hydrolysed at 38° in saturated picric acid, about 10 percent of the substance is converted into creatinine (Fig. 1.).
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IT is generally assumed that when phosphocreatine is hydrolysed either enzymatically or spontaneously, the end products are creatine and phosphoric acid. This, however, is not always found to be the case. When phosphocreatine is hydrolysed at 38° in saturated picric acid, about 10 percent of the substance is converted into creatinine (Fig. 1.).
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Phosphocreatine resynthesis is not affected by creatine loading
Medicine & Science in Sports & Exercise, 1999Oral creatine supplementation has been shown to improve power output during high intensity intermittent muscle contractions. Facilitated muscle phosphocreatine (PCr) resynthesis, by virtue of elevated intracellular PCr concentration, might contribute to this ergogenic action. Therefore, the effect of creatine loading (C: 25 g X d(-1) for 5 d) on muscle
K, Vandenberghe +4 more
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Phosphocreatine as a Possible Modulator of the Adenylate Pool
1989The administration of purine nucleotide precursors results in a small increase of the adenylate pool because of feedback control mechanisms; nevertheless different tissues have different levels of the adenylate pool. This suggests that other factors may modulate the feedback regulation.
RONCA, GIOVANNI +5 more
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Free and bound orthophosphate and phosphocreatine in muscle
Archives of Biochemistry and Biophysics, 1964Abstract The use of ethanol at low temperature as deproteinizing medium reveals the presence of some bound phosphocreatine as well as of bound Pi in resting muscle. The amount of bound Pi in muscles of frogs and rabbits is comparable to that bound by myosin isolated from these species, but the amount in cat muscles is significantly greater.
J, SACKS, R S, FULFORD
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Amelioration of renal ischemic injury by phosphocreatine
Journal of Surgical Research, 1991Phosphocreatine (PCr) is a critical intracellular energy reservoir used in the regeneration of ATP. The aim of this study was to determine the efficacy of exogenously added PCr on preservation of renal function in an in vitro model. The renal artery and ureter of a rat were cannulated and the kidney was subjected to 45 min of normothermic in vivo ...
R, Rodriguez +4 more
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Creatine and Phosphocreatine in the Human Red Cell
British Journal of Haematology, 1968In vitro experiments showed that the concentration of creatine in a mixed population of normal red cells was either unchanged or slightly diminished during incubation at 37° C. for 48 hours in plasma or a buffered medium. If young cells were present there was always a fall in creatine during the early stages of incubation.
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Clinical applications of phosphocreatine and related mechanisms
Life SciencesPhosphocreatine (PCr), a naturally occurring creatine phosphorylated molecule, is a high-energy phosphate compound that is one of the most important substances involved in cell energy metabolism, and also has anti-apoptosis and anti-oxidative stress effects.
Jing, Wang +4 more
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Arzneimittel-Forschung, 1983
Following intravenous administration of 32P-phosphocreatine (50 mg/kg) or an equimolar mixture of creatine + 32P-phosphate (equivalent to 50 mg/kg phosphocreatine) to rats, and examination of an extract of cardiac muscle by HPLC, the proportion of radiolabelled adenosine triphosphate (ATP; up to 3%) was similar in each treatment group at 120 min after ...
W H, Down, L F, Chasseaud, S A, Ballard
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Following intravenous administration of 32P-phosphocreatine (50 mg/kg) or an equimolar mixture of creatine + 32P-phosphate (equivalent to 50 mg/kg phosphocreatine) to rats, and examination of an extract of cardiac muscle by HPLC, the proportion of radiolabelled adenosine triphosphate (ATP; up to 3%) was similar in each treatment group at 120 min after ...
W H, Down, L F, Chasseaud, S A, Ballard
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