Here we analyzed whether the anti-neoplastic effect of carnosine, which inhibits glycolytic ATP production, can be antagonized by ATP production via oxidative phosphorylation fueled by pyruvate. Therefore, glioblastoma cells were cultivated in medium supplemented with glucose, galactose or pyruvate and in the presence or absence of carnosine. CPI-613 was employed to inhibit the entry of pyruvat...

A renewed interest in tricarboxylic acid cycle enzymopathies has resulted from the report that, in addition to devastating encephalopathies, these can result in various types of tumors in human. We first review the major features of the cycle that may underlie this surprising variety of clinical features. After discussing the rare cases of encephalopathies associated with specific deficiencies ...

Metabolites and enzyme activities involved in energy metabolism in Taenia solium cysticerci were determined systematically in vivo in order to illustrate the principles of variation of energy metabolism. Metabolites and enzymes determined included GLC, LAC, PEPCK, PK, LDH, SDH, ICD, XOD, ME, GDH, FR, ATPase, ACP, AKP, G6Pase and FE. The results showed that transport of substances, anaerobic gly...

objective(s):higher cellular reactive oxygen species (ros) levels is important in reducing cellular energy charge (ec) by increasing the levels of key metabolic protein, and nitrosative modifications, and have been shown to damage the cardiac tissue of diabetic mice. however, the relation between energy production and heart function is unclear. materials and methods:streptozotocin (stz, 150 mg/...

The current concept of fatty acid metabolism involves the formation of acetyl CoAl and the condensation of acetyl CoA with oxalacetate upon entrance into the tricarboxylic acid cycle. Therefore, a sufficient amount of oxalacetic acid is necessary for the complete oxidation of fatty acids via the tricarboxylic acid cycle, and, if sufficient oxalacetic acid is not present., ketosis results. Previ...

Isolated rat hepatocytes were cultured in a modified HI-WO/BA medium for 16 h. In the following 24 h oleate or oleate plus ethanol was added to the medium. After this period the medium was changed again and the cultures were further incubated with [1-14C]oleate alone or with [1-14C]oleate plus ethanol for 6 h. This allowed a comparison of effects of short-term (6 h) and long-term (24 + 6 h) exp...

The amount of carbon (mumoles of carbon atoms) drained from the tricarboxylic acid cycle for protein synthesis was compared with mumoles of CO(2) released from the cycle at 2-day intervals during the growth of suspension cultures of Paul's Scarlet rose. We concluded that during the period of most rapid protein synthesis (day 0-4) one-sixth as much carbon was drained from the tricarboxylic acid ...