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Neuroamine related compounds in the CSF of hydrocephalic rabbits.

The effects of neonatal hydrocephalus on the levels of tyrosine, tryptophan, 5-hydroxyindoleacetic acid (5-HIAA), and homovanillic acid (HVA) in CSF were determined by high-performance liquid chromatography (HPLC) with fluorometric detection in normal and chronically hydrocephalic rabbits. The hydrocephalic rabbits showed a highly significant increase in both the serotonin metabolite 5-HIAA and the dopamine metabolite HVA. There were no significant effects of the hydrocephalus on either tyrosine or tryptophan levels. There was a significant positive correlation between the intracranial pressur…

Compound Chaijin Jieyu Fang alleviates insomnia complicated with depression by reshaping actinobacteria to inhibit neuronal apoptosis.

OBJECTIVE: This study aimed to investigate the intervention effect of Compound Chaijin Jieyu Fang (CCJF) on insomnia complicated with depression, focusing on restoring gut microbiota balance, particularly the Actinobacteria, which is implicated in the dysregulation of the tryptophan metabolic pathway. This imbalance contributes to neuronal apoptosis, exacerbating the symptoms of insomnia complicated with depression. METHODS: A Mendelian randomization analysis was conducted to explore the causal relationships between insomnia and depression, as well as the mediating role of gut microbiota. The…

Усиление стрессовой ситуации в области питания способствует стойкости в хламидио-трахоматисе.

Стойкость, жизнеспособное, но не воспроизводимое состояние роста, причастна к болезням, вызванным трахоматисом хламидии. Голодание отдельных питательных веществ приводит к поверхностно аналогичному стойкому состоянию, что подразумевает конвергенцию общей внутриклеточной среды. Мы использовали двойную последовательность RNA-патогена в условиях как железа, так и триптофана для систематической характеристики стойкого хламидиального транскриптома и определения общего вклада реакции на транскрипцию стрессовой системы камеры в формировании внутриклеточной среды. Расшифровка инфицированных клеток нос

Совпадение в аннотации оригинала
Persistence, a viable but non-replicating growth state, has been implicated in diseases caused by Chlamydia trachomatis. Starvation of distinct nutrients produces a superficially similar persistent state, implying convergence on a common intracellular environment. We employed host-pathogen dual RNA-sequencing under both iron- and tryptophan-starved condition…

"Bi-digital o-ring test molecular identification and localization method" and its application in imaging of internal organs and malignant tumors as well as identification and localization of neurotransmitters and micro-organisms--Part 1.

Using the "Bi-Digital O-Ring Test Molecular Identification and Localization Method," one can identify and localize minute amounts of bioacti … ndorphin, methionine-enkephalin, norepinephrine, dopamine, L-dopa, substance P, etc.), as well as L-tryptophan and L-tyrosine; cholesterol; steroid hormones (including aldosterone, corticosterone, cortisol, progesterone, testosterone, etc.); peptide hormones; microscopic slides of normal organs; microscopic slides of specific cancer cells of specific organs …

Effect of graduated drug therapy for moderate-to-severe chronic insomnia on the severity of disease: an observational study in Germany.

STUDY OBJECTIVES: Severe chronic insomnia is a common sleep disorder that is mostly persistent and needs to be treated. Pharmacologic treatment options and guidelines are sparse, particularly for long-term treatment. Our study aimed to investigate a graduated therapy scheme for moderate-to-severe chronic insomnia in practice, considering the effects on self-reported sleep quality and quality of life. METHODS: Patients with moderate-to-severe chronic insomnia were given appropriate medication according to a graduated therapy scheme, ranging from l-tryptophan (as the first choice, least potent)…

Serum neopterin and kynurenine as predictive and prognostic biomarkers in prostate cancer: the role of dietary inflammatory index and biomarker interactions.

BACKGROUND: It has been shown that neopterin levels in various body fluids can help predict the diagnosis of different malignancies. Although many studies have investigated the roles of serum neopterin concentrations, tryptophan metabolism, and the dietary inflammation index (DII) in various cancers, the connection between these factors and prostate cancer (PC) remains uncertain. The aim of this study was to investigate the predictive and prognostic roles of serum neopterin, and kynurenine levels, along with the kynurenine-to-tryptophan ratio (KTR) and DII in prostate cancer. METHODS: This st…

Establishment of an early diagnosis model of colon cancerous bowel obstruction based on 1H NMR.

OBJECTIVE: To prospectively establish an early diagnosis model of acute colon cancerous bowel obstruction by applying nuclear magnetic reson … e, Allyl isothiocyanate, and Vanillylmandelic acid increased in the CBO group; while the lecel of L-Tryptophan and Bilirubin decreased. There were significant differences between two groups in the tryptophan metabolism, tyrosine metabolism, glutathione metabolism, phenylalanine metabolism and synthesis pathways of phenylalanine, tyrosine and tryptophan (all …

Liquid chromatography method with tandem mass spectrometry and fluorescence detection for determination of inflammatory biomarkers in gingival crevicular fluid as a tool for diagnosis of periodontal disease.

The new ultra-high performance liquid chromatography method with tandem mass spectrometry and fluorescence detection allowing fast, selective, and high-throughput analysis of neopterin, kynurenine, tryptophan, and creatinine in gingival crevicular fluid (GCF) has been optimized. Defining the pathophysiology of periodontal disease and identification of potential diagnostic test for active periodontitis remains a significant challenge in the field of oral disease diagnosis. Analysis of GCF provides a non-invasive means of evaluating the role of the host response in periodontal disease. In additi…

Indoleamine 2,3-Dioxygenase Activity During Acute Toxoplasmosis and the Suppressed T Cell Proliferation in Mice.

Toxoplasma gondii (T. gondii) is an obligate intracellular parasite and belongs to the phylum Apicomplexa. T. gondii is of medical and veterinary importance, because T. gondii causes the parasitic disease toxoplasmosis. In human cells, the interferon-gamma inducible indoleamine 2,3-dioxygenase 1 (IDO1) is an antimicrobial effector mechanism that degrades tryptophan to kynurenine and thus limits pathogen proliferation in vitro. Furthermore, IDO is described to have immunosuppressive properties, e.g., regulatory T cell differentiation and T cell suppression in humans and mice. However, there is …

Paralysis and killing of Caenorhabditis elegans by enteropathogenic Escherichia coli requires the bacterial tryptophanase gene.

Pathogenic Escherichia coli, including enteropathogenic E. coli (EPEC), enterohaemorrhagic E. coli (EHEC), enteroinvasive E. coli (EIEC) and enterotoxigenic E. coli (ETEC) are major causes of food and water-borne disease. We have developed a genetically tractable model of pathogenic E. coli virulence based on our observation that these bacteria paralyse and kill the nematode Caenorhabditis elegans. Paralysis and killing of C. elegans by EPEC did not require direct contact, suggesting that a secreted toxin mediates the effect. Virulence against C. elegans required tryptophan and bacterial trypt…

Discovery of (E)-2-cyano-N-(2,3-dihydrobenzo[b][1,4] dioxin-6-yl)-3-(1H-indol-3-yl)acrylamide as a novel TDO inhibitor for cancer treatment.

Tryptophan 2,3- oxygenase (TDO), an immune-suppressing enzyme, catalyzes the catabolism of tryptophan to N-formylkynurenine. Overexpression of TDO in multiple malignancies associates with immune evasion mechanisms. Therefore, we aimed to discover novel inhibitors targeting TDO as a potential strategy for cancer treatment. In this study, we designed and synthesized a series of (E)-2-cyano-3-(1H-indol-3-yl) acrylamide derivatives. A lead compound, 5c, was identified and exhibited inhibitory activity against TDO, with an IC50 value of 1.25 ± 0.04 μM. 5c demonstrated significant tumor growth suppr…

Synthesis, Molecular Modeling, and Biological Evaluation of Novel Tetrahydro-β-Carboline Hydantoin and Tetrahydro-β-Carboline Thiohydantoin Derivatives as Phosphodiesterase 5 Inhibitors.

Two series of fused tetrahydro-β-carboline hydantoin and tetrahydro-β-carboline thiohydantoin derivatives with a pendant 2,4-dimethoxyphenyl at position 5 were synthesized, and chiral carbons at positions 5 and 11a swing from R,R to R,S, S,R, and S,S. The prepared analogues were evaluated for their capacity to inhibit phosphodiesterase 5 (PDE5) isozyme. The R absolute configuration of C-5 in the β-carboline hydantoin derivatives was found to be essential for the PDE5 inhibition. Chiral carbon derived from amino acid even if of the S configuration (L-tryptophan) may lead to equiactive or more a…

Neuropsychological investigation into the carcinoid syndrome.

RATIONALE: In patients suffering from metastatic carcinoid tumors, chronic disturbances of serotonergic metabolism are frequently present. S … gical battery. This was compared with the performance of matched healthy controls. RESULTS: Plasma tryptophan levels were lower than controls. Patients showed an enhanced ability to learn new stimulus-response associations. Sustained visual attention, however, was impaired. CONCLUSION: Cognitive patterns were different from those found in depressive patien …

Physical Properties for Novel Cilostazol Co-amorphous; Effect of Preparation Method and Molar Ratio on the Co-amorphous.

Co-amorphous materials have gained special attention in the pharmaceutical field due to their high potential to enhance the oral bioavailability of poorly aqueous soluble drugs. In co-amorphous studies, few reports have examined the physical properties and molecular states of different active pharmaceutical ingredients (APIs) : co-amorphous former (CF) molar ratios and preparation methods. Therefore, we investigated the effect of molar ratio and preparation method on the physical properties of a novel co-amorphous system consisting of cilostazol and l-tryptophan, which we identified through sc…

L-tyrosine-bound ThiH structure reveals C-C bond break differences within radical SAM aromatic amino acid lyases.

2-iminoacetate synthase ThiH is a radical S-adenosyl-L-methionine (SAM) L-tyrosine lyase and catalyzes the L-tyrosine Cα-Cβ bond break to produce dehydroglycine and p-cresol while the radical SAM L-tryptophan lyase NosL cleaves the L-tryptophan Cα-C bond to produce 3-methylindole-2-carboxylic acid. It has been difficult to understand the features that condition one C-C bond break over the other one because the two enzymes display significant primary structure similarities and presumably similar substrate-binding modes. Here, we report the crystal structure of L-tyrosine bound ThiH from Thermos…

Micelle-associated endomorphin-1 has ability to bind copper in the oxidation state either Cu(II) or Cu(I).

Reduction of Cu(II) to Cu(I) in an oxidizing extracellular environment is a potential risk factor for neurodegenerative diseases, because th … position. In the presence of SDS micelles, however, a significant quenching of fluorescence of the tryptophan side chain of EM1 was observed on addition of copper ion, either Cu(II) or Cu(I). The spectral changes of the UV absorption of the tryptophan, which are diagnostic of cation-π interaction, were also brought about by addition of copper to EM1 only in …

The five bromotryptophans.

The five regioisomeric bromotryptophans (BrTrps) play an important role in the life of sponges and lower marine invertebrates. These bromo-amino acids, which are formed by post-translational modifications, are not found in nature in their free state, but rather are involved in more complex structures. Any of the BrTrps can be part of a peptide, a cyclic peptide, an indole alkaloid, an ergot alkaloid, a macrocycle and others. The present review covers the synthesis, physical and spectroscopic properties of the five BrTrps. It also describes the many exiting pharmacological and biological activi…

Special Issue on "Pleiotropic Benefits of Melatonin: From Basic Mechanisms to Disease".

Melatonin (N-acetyl-5-methoxytryptamine) is a multifunctional hormone that is naturally produced from tryptophan and released rhythmically throughout the night by the pineal gland to regulate sleep-wake cycles [...].