nicotinic acid/hypoxia

We report a new series of HIF-1alpha inhibitors which were obtained through structural modifications of previously reported lead 1. The in vitro inhibitory potencies of newly synthesized compounds were evaluated against hypoxia-induced HIF-1 activation using cell-based reporter assay in three human

Objective: To investigate influence of nicotinic acid adenine dinucleotide phosphate (NAADP) on autophagy in hypoxic cardiomyocytes of rats and its mechanism. Methods: Five neonatal Sprague-Dawley rats were collected and sacrificed to harvest the hearts, and primary cardiomyocytes were separated for

BACKGROUND Hypoxia resulting from adipocyte expansion is considered the basis of the inflammatory milieu observed in Metabolic Syndrome. Nicotinic acid can act on adipocytes interfering on the inflammatory response. In this study, we investigated the role of HIF-1 α (hypoxia-inducible factor -1

OBJECTIVE The aim was to show differences between the effects of various dietary long chain fatty acids (palmitic, oleic, linoleic, alpha and gamma linolenic acids) perfused in isolated rat hearts subjected to a sequence of high flow anoxia and subsequent reoxygenation. METHODS Isolated working rat

Several papers report a hypoxia-induced upregulation of the endothelial nitric oxide synthase (eNOS) mRNA expression. Since there is no known hypoxia-sensitive element binding site in the eNOS promoter, we reasoned that the effect of hypoxia could be simulated by a metabolically elicited alteration

Investigations were initiated to examine the rate of imbalances in carnitine metabolism in the pathogenesis of diabetic vascular changes in the retina, peripheral nerves, aorta and kidney. It appears that glucose/diabetes-induced vascular dysfunction and early vascular structural changes are

OBJECTIVE To estimate the selectivity of action of cobalt complexes on tumor tissue. METHODS Cobalt(III) complexes containing both the tetradentate Schiff-base ligand derived from acetylacetone and ethylenediamine, and compounds of the vitamin PP series or their synthetic analogs, viz. nicotinamide,

A special "anoxia test" was developed with isolated guinea pig atria to test influences on the anoxic energy balance. Adenine, ribose, nicotinic acid or nicotinamide added as precursors to nutrition solutions inhibit the loss of cardiac adenine and pyridine nucleotides during anoxia and improve the

L-Carnitine (L-C) is involved in the transport of acyl groups into mitochondria for beta-oxidation, although its role in the adult brain is still uncertain. We have shown before that the uptake of L-carnitine into cultured rat cortical neurones was dependent on temperature as well as the Na gradient

Previous studies have demonstrated that catecholamines produce massiive disseminated cardiac necrosis closely resembling experimental myocardial infarction. Since catecholamine-induced lipolysis increases myocardial oxygen demand and increased levels of FFA are associated with a depression of

Isolated rabbit hearts were perfused according to Langendorff. The bilateral sympathetic nerve supply to the organ was stimulated at intervals, and the overflow of noradrenaline and of prostaglandins of the E series in the effluent was assayed, using fluorimetric and bioassay methods, respectively.

There is a rising interest towards the old drug, nicotinic acid (niacin, vitamin B(3)), because at pharmacological concentrations it has a beneficial effect on HDL cholesterol. Its use, however, was limited due to its adverse effect, flushing. When the mechanism of flushing was solved, a combination

The relative effects of nicotinic acid (NA) and nitroglycerin (NT) added to cold high K+ cardioplegia were studied, to represent the two moieties of the adenosine triphosphate-sensitive potassium channel (KATP) activator nicorandil (N). In addition, we made a pooled analysis of a large series of