Search results for "Inorganic phosphate"

Die dynamische 31-Phosphor-Magnetresonanz-Spektroskopie des M. quadriceps: Einfluß von Geschlecht und Alter auf spektroskopische Parameter

1999

PURPOSE 31P-MRS is used to assess the influence of sex und age on quadriceps muscle metabolism before and after exercise. MATERIALS AND METHODS 32 healthy volunteers (15 women, 17 men, mean age: 38 +/- 17 yrs.) were examined by dynamic phosphorus-31 (31P) magnetic resonance spectroscopy (MRS). In the magnet, the quadriceps muscle was stressed by an isometric und an isotonic form of exercise until exhaustion, respectively. RESULTS Resting conditions: With increasing subjects' age, the ratio beta-adenosine triphosphate/total phosphate decreased (r = -0.37; p = 0.02). With increasing subjects' age, the ratios inorganic phosphate/phosphocreatine (r = 0.79; p = 5 x 10(-8), phosphomonoester/beta-…

Erythrocytäre Anionenkonzentrationen bei renaler Insuffizienz

1966

In chronic renal insufficiency, concentrations of chloride and inorganic phosphate in human red blood cells are elevated. There is no correlation between serum non-protein nitrogen and the anionic concentrations of red blood cells. Positive correlations exist between corresponding cellular and extracellular anionic concentrations.

Amycolatopsis balhimycina gene expression under inorganic phosphate limitation

2009

Inorganic phosphate limitation affects global gene expression in Amycolatopsis balhimycina

2010

Inhibition of molybdenum blue formation by ATP.

1981

Molybdenum blue formation was not affected by the presence of ATP up to a concentration of 1.2 muM/l. At higher concentrations the color development was inhibited relative to ATP concentration, finally reaching complete inhibition. Auto-hydrolysis of ATP was found at a rate of 1.4%/h. An exact determination of inorganic phosphate in the presence of easily hydrolyzed phosphate esters requires the measurement of extinction at fixed time intervals and extrapolation back to time zero.