Interest in studying cancer metabolism has risen in recent years, as it has become evident that the relationship between cancer and metabolic pathways could reveal novel biomarkers and therapeutic targets. Metabolic starvation therapy is particularly promising due to its low toxicity. Nonessential amino acids are promising metabolites for such therapy because they become essential in many tumor...

Specific amino acids are known to acutely and chronically regulate insulin secretion from pancreatic -cells in vivo and in vitro. Mitochondrial metabolism is crucial for the coupling of amino acid and glucose recognition to exocytosis of insulin granules. This is illustrated by in vitro and in vivo observations discussed in the present review. Mitochondria generate ATP, which is the main coupli...

The aim of this study was to find some relationship between amino acid metabolism and the embryo morphokinetic parameters studied via time-lapse analysis. Study included 48 human embryo samples and their culture media. Two groups of embryos were identified: embryos reached the 8-cell stage on day 3 (n=34) and embryos failed to develop at any point during the incubation (n=14). Amino acids level...

Although Mann (1) clearly demonstrated the key role of the liver in the deamination process nearly three decades ago, it is only since the development of such techniques as the quantitative measurements of free alpha amino acids in the plasma and urine, and their separation by means of either paper and starch column chromatography or microbiological assay that more definitive studies on the met...

In addition to the primary stimulus of glucose, specific amino acids may acutely and chronically regulate insulin secretion from pancreatic beta-cells in vivo and in vitro. Mitochondrial metabolism is crucial for the coupling of glucose, alanine, glutamine and glutamate recognition with exocytosis of insulin granules. This is illustrated by in vitro and in vivo observations discussed in the pre...

The influence of first-pass splanchnic metabolism was investigated by comparing the response of 5 lactating cows to an infusion of an amino acid mixture into the abomasum or a jugular vein over 5 d according to a complete block design. The basal diet and the amino acid infusion provided 71% and 14% of crude protein requirements, respectively. The jugular infusion increased (P = 0.01) milk yield...

TADA, K., Y OSHIDA, T. and ARAAAWA, Ts. Free Amino Acid Pattern in the Liver from the Patients with Amino Acid Disorders: Postmortem Diagnosis of Inborn Errors of Amino Acid Metabolism. Tohoku J. exp. Med., 1970, 101 (3), 223-226 Free amino acid concentrations were determined in the liver biopsied or autopsied from the patients with amino acid disorder and from several controls. The results sho...

The portal-drained viscera (stomach, intestine, pancreas and spleen) have a much higher rate of both energy expenditure and protein synthesis than can be estimated on the basis of their weight. A high utilization rate of dietary nutrients by the portal-drained viscera might result in a low systemic availability which determines whole-body growth. From studies in our multiple catheterized piglet...