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Tryptophan overloading activates brain regions involved with cognition, mood and anxiety
(Acad Brasileira de Ciências, 2017)
Tryptophan is the only precursor of serotonin and mediates serotonergic activity in the brain. Previous studies have shown that the administration of tryptophan or tryptophan depletion significantly alters cognition, mood ...
Light emission from tryptophan oxidation by hypobromous acid
(2012-10-08)
The emission of ultraweak light from cells is a phenomenon associated with the oxidation of biomolecules by reactive oxygen species. The indole moiety present in tryptophan, serotonin and melatonin is frequently associated ...
Taurine bromamine: A potent oxidant of tryptophan residues in albumin
(Elsevier B.V., 2011-03-15)
Taurine is the most abundant free amino acid in leukocytes and can react with HOBr to produce taurine bromamine (Tau-NHBr). The aim of this study was to assess the ability of Tau-NHBr to oxidize tryptophan, either free or ...
Molecular models of tryptophan synthase from Mycobacterium tuberculosis complexed with inhibitors
(Humana Press Inc, 2006-01-01)
The development of new therapies against infectious diseases is vital in developing countries. Among infectious diseases, tuberculosis is considered the leading cause of death. A target for development of new drugs is the ...
A simple and effective method to synthesize fluorescent nanoparticles using tryptophan and light and their lethal effect against bacteria
(Elsevier B.V., 2014-11-01)
A simple, environmentally friendly and cost-effective method was used to synthesize silver nanoparticles using typtophan and light. To prepare the nanoparticles, the following components were used: deionized water, silver ...
Dietary L-tryptophan alters aggression in juvenile matrinxa Brycon amazonicus
(Springer, 2012-06-01)
This study evaluated the effect of dietary supplementation with -tryptophan (L-TRP), a serotonin precursor, on the aggressiveness of juvenile matrinx . Fish were kept in individual aquaria for 7 days receiving the diets: ...
Digestible tryptophan levels in diets for pigs weighing 15 to 30 kg
(Revista Brasileira de Zootecnia, 2017)
Serotonin concentration, synthesis, cell origin, and targets in the rat caput epididymis during sexual maturation and variations associated with adult mating status: Morphological and biochemical studies
(Amer Soc Andrology, Inc, 2007-01-01)
The caput epididymis of some mammals contains large quantities of serotonin whose origin, targets, and physiological variations have been poorly studied. We combined morphological and biochemical techniques to begin ...
Digestible tryptophan:digestible lysine ratio in diets for laying hens from 24 to 40 weeks of age
(Revista Brasileira de Zootecnia, 2017)
Study of the binding of Eu3+ and Tb3+ to L-phenylalanine and L-tryptophan
(1997-12-01)
Trivalent europium and terbium ions have ionic radii similar to that of Ca2+. So they are employed as probes of calcium binding sites in biological molecules. These ions exhibit very useful spectroscopic characteristics, ...