Aim. The aim of the research was to investigate induction Triticum aestivum L. non-specific tolerance by nicotinic acid hypoxia during flooding stress. Methods. Winter wheat plants cv. Ladyzhynka were grown in laboratory conditions and had been treated solution then stress started. hydrogen peroxide content leaves morphometric parameters measured experimental period. Results. It is shown that i...

Approximately 20 years after the formulation of the “cholinergic hypothesis” to explain the cognitive symptoms of Alzheimer’s disease, cholinesterase therapy remains the mainstay of treatment for this disorder. Although partially effective, currently available agents have limited effects on cognitive function and long-term efficacy appears modest. Direct or indirect stimulation of nicotinic cho...

The metabolism of nicotinic acid and nicotinamide has been examined in a number of mouse tissues following intraperitoneal injection of 0.9 pmole of W-labeled nicotinic acid and nicotinamide. In all the tissues except liver, and to some extent intestine, nicotinamide was clearly a better precursor of DPN than was nicotinic acid. In the case of liver and intestine [14C]nicotinic acid produced a ...

The cellular mechanisms by which neuronal nicotinic cholinergic receptors influence many aspects of physiology and pathology in the neocortex remain primarily unknown. Whole-cell recordings and single-cell reverse transcription (RT)-PCR were combined to analyze the effect of nicotinic receptor agonists on different types of neurons in acute slices of rat neocortex. Nicotinic receptor agonists h...

The lateral spiriform nucleus (SpL) in the chick mesencephalon contains functional nicotinic receptors and receives a cholinergic fiber projection. We now use double-label immunohistochemistry to demonstrate that choline acetyltransferase-immunopositive fibers in the SpL and in the cholinergic fiber tract lateral to the nucleus are associated with fibers expressing the alpha5 and/or alpha3 nico...

The antidyslipidemic drug nicotinic acid (niacin) has been used for decades. One of the major problems of the therapeutical use of nicotinic acid is a strong cutaneous vasodilation called flushing, which develops in almost every patient taking nicotinic acid. Nicotinic acid-induced flushing has been shown to be mediated by the nicotinic acid receptor GPR109A and to involve the formation of vaso...

Nicotinic acid has been used for decades to treat dyslipidaemic states. In particular its ability to raise the plasma HDL cholesterol concentration has led to an increased interest in its pharmacological potential. The clinical use of nicotinic acid is somewhat limited due to several harmless but unpleasant side effects, most notably a cutaneous flushing phenomenon. With the recent discovery of...

In 1946, Rosen e2 al. (1) showed that administration of tryptophan to rats resulted in an additional excretion of nicotinic acid and Nl-methylnicotinamide (Nl-Me). Singal et al. (2) found, in addition to these, increased excretion of another metabolite which could be converted to nicotinic acid by autoclaving in 1 N sulfuric acid solution. Henderson isolated this metabolite from the urine of ra...

Nicotinic acid and nicotinamide belong to the water-soluble vitamins, and they have many physiological and pharmacological functions in various organisms. In this study, we investigated the differentiation-inducing ability of nicotinic acid-related compounds in chronic myelogenous leukemia K562 cell line. Proliferation of K562 leukemia cells was inhibited by several nicotinic acid-related compo...