purine/necrosis

The serum levels of uric acid, triglycerides, cholesterol, and lipoproteins were determined in 35 patients suffering from primary avascular necrosis. The results were compared with those of a control group and with those of patients suffering from gout. The frequency distribution of the results in

Development of drug resistance in cancer is one of the main challenges in chemotherapy, and many mechanisms are still unknown. In this study, we show that tumor necrosis factor alpha (TNFalpha) increases postdrug survival from 5-fluoro-2'-deoxyuridine (FdUrd) in two human colon tumor cell lines.

Changes in myocardial purine metabolism were studied after temporary coronary artery occlusion and subsequent reperfusion in the dog. Sequential myocardial biopsies were performed to allow for measurements of ATP, adenine nucleotide, nucleoside, and base concentrations after 15 min of ischemia, and

Serum uric acid, triglycerides, cholesterol, and lipoprotein levels were determined in 35 patients with primary avascular necrosis of the femoral head. The results were compared with a control group and a group of gouty patients. Frequency distribution of the data in the three groups was found to be

The importance of codon context and leader length in the translational regulation of p20 and p21 from the bifunctional 0.9-kb subgenomic mRNA cucumber necrosis virus was investigated. Nucleotide substitutions introduced into the -3 and +4 positions of the p21 AUG codon (where the A of the AUG is +1)

The effects on duck hepatitis B virus (DHBV) replication of specific analogues of two classes of chemical compounds not previously tested against hepadnaviruses are described. One is erythromycin A-9-methyloxime (EMO) and other oxime derivatives of erythromycin A, and the other is purine nucleoside

The administration of galactosamine to rats produces dose-dependent liver cell injury. A relatively low dose of galactosamine (200 mg/kg) causes a marked fall in UTP with an accompanying inhibition of RNA and protein synthesis. Uridine will reverse the UTP deficiency and the inhibition of RNA and

Using histamine and the H3 receptor antagonist thioperamide, the roles of histamine receptors in NMDA-induced necrosis were investigated in rat cultured cortical neurons. Within 3 h of intense NMDA insult, most neurons died by necrosis. Histamine reversed the neurotoxicity in a

Theacrine (1,3,7,9-tetramethyluric acid), a purine alkaloid, has proven to be beneficial in maintaining several brain functions and is being studied for potential medicinal uses in recent years. In this study, we isolated theacrine from Camellia assamica var. kucha and investigated its protective

The RNA from infectious pancreatic necrosis virus has been purified and had a sedimentation velocity of 14S on sucrose gradients, a buoyant density of 1-60 g/ml in CS2SO4 and pyrimidine to purine ratios near unity. The RNA had the appearance of a linear double stranded molecule with an average

Children with congenital homozygous deficiency of purine nucleoside phosphorylase (PNP) have abnormalities in purine metabolism that result in T-cell selective immune deficiency. The mechanism of action for cell death has been attributed to intracellular accumulation of dGTP, a potent inhibitor of

Purines are ubiquitous endogenous metabolites, and their roles as signalling molecules, especially in the case of adenosine and ATP, are well documented. The release of purines is increased when cells are highly activated, stressed or damaged, and this is known to have profound effects on various