Elevated plasma creatinine due to creatine ethyl ester use.

The effects of creatine ethyl ester supplementation combined with heavy resistance training on body composition, muscle performance, and serum and muscle creatine levels

Numerous creatine formulations have been developed primarily to maximize creatine absorption. Creatine ethyl ester is alleged to increase creatine bio-availability. This study examined how a seven-week supplementation regimen combined with resistance training affected body composition, muscle mass, muscle strength and power, serum and muscle creatine levels, and serum creatinine levels in 30 no...

Guanidino compounds in guanidinoacetate methyltransferase deficiency, a new inborn error of creatine synthesis.

The first inborn error of creatine metabolism (guanidinoacetate methyltransferase [GAMT] deficiency) has recently been recognized in an infant with progressive extrapyramidal movement disorder. The diagnosis was established by creatine deficiency in the brain as detected by in vivo magnetic resonance spectroscopy and by defective GAMT activity and two mutant GAMT alleles in a liver biopsy. Here...

Pre-Market Notification For New Dietary Supplement-Create Ethyl Ester (Cre-EsterTM) 1.0 Name and address of the distributor and manufacturer The distributor of the creatine ethyl ester shall be: Pro-Nutrient Technologies, Inc

Cognitive effects of creatine ethyl ester supplementation.

Supplementation with creatine-based substances as a means of enhancing athletic performance has become widespread. Until recently, however, the effects of creatine supplementation on cognitive performance has been given little attention. This study used a new form of creatine--creatine ethyl ester--to investigate whether supplementation would improve performance in five cognitive tasks, using a...

Cli. the Metabolism of Creatine Ii. the Conversion of Arginine into Creatine in the Isolated Rabbit Heart

THE use of the whole animal for the study of the metabolism of creatine has a number of disadvantages. A large body of evidence exists which indicates that quite considerable quantities of creatinine may be injected into an animal, or administered parenterally, without the subsequent appearance of any extra creatine in the urine. Furthermore, the recent work of Benedict & Behre [1937] and of Ga...