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Saikh Mohammad Wabaidur et al.
Journal of separation science, 38(15), 2597-2606 (2015-05-20)
An ultra high performance liquid chromatography with mass spectrometry method has been developed for the simultaneous separation, identification and determination of 22 phenolic constituents in honey from various floral sources from Yemen. Solid-phase extraction was used for extraction of the
Alicia P Cárdenas-Castro et al.
International journal of food sciences and nutrition, 71(7), 826-838 (2020-03-07)
"Serrano" pepper is extensively used in Mexican cuisine. The aim of this study was to identify the bioaccessible phenolic compounds (PC) of "Serrano" pepper as well as short-chain fatty acids (SCFA) produced and PC bioconverted using an in vitro step-wise gastromimetic
Photoremovable protecting groups: development and applications.
Jakob Wirz
Photochemical & photobiological sciences : Official journal of the European Photochemistry Association and the European Society for Photobiology, 11(3), 445-445 (2012-02-22)
Suri Roowi et al.
Molecular nutrition & food research, 53 Suppl 1, S68-S75 (2009-05-06)
Human urine was collected over a 24 h period after the consumption of 250 mL of (i) water, (ii) orange juice, and (iii) orange juice plus 150 mL of full fat natural yoghurt. The orange juice contained 168 micromol of
A Berrocal et al.
Journal of applied microbiology, 113(1), 126-134 (2012-04-24)
For Ophiostoma (Ceratocystis) ulmi, the ability to undergo morphological change is a crucial factor for its virulence. To gain an understanding of quorum-sensing activity in O. ulmi as it relates to yeast-mycelium dimorphism control, this study examines the effects of
G Hoffmann et al.
Clinical chemistry, 35(4), 587-595 (1989-04-01)
This new method for qualitative and quantitative determination of organic acids, aldehydes, and ketones in biological samples is effective for use with urine, plasma, and amniotic fluid, and it requires no deproteinization. Isolation by batch-wise liquid partition chromatography on silicic
Low CSF GABA concentration in children with febrile convulsions, untreated epilepsy, and meningitis.
D Rating et al.
Journal of neurology, 230(4), 217-225 (1983-01-01)
In 14 children with epilepsy, 51 with febrile convulsions and 22 with meningitis gamma-aminobutyric acid (GABA) concentrations in lumbar CSF were determined. While the mean for CSF GABA concentrations for all epileptic children was unchanged [144 (range: 73-285) pmol/ml; controls:
Rohan A Davis et al.
Bioorganic & medicinal chemistry, 18(1), 14-18 (2009-12-08)
We have investigated the enzyme inhibition characteristics of a natural product (NP)-based phenolic library against a panel of human carbonic anhydrases (hCAs, EC 4.2.1.1) which included hCAs I and II (cytosolic) and hCA VA/VB (mitochondrial isoforms). Most of these compounds
W P D Wass Thilakarathna et al.
Food and chemical toxicology : an international journal published for the British Industrial Biological Research Association, 125, 479-493 (2019-02-09)
Seven selected microbial metabolites of proanthocyanidins (MMP), 3-phenylpropionic, 4-hydroxyphenyl acetic, 3-(4-hydroxyphenyl) propionic, p-coumaric, benzoic acid, pyrogallol (PG), and pyrocatechol (PC) were evaluated for their ability to reduce chemical carcinogen-induced toxicity in human lung epithelial cells (BEAS-2B) and human fetal hepatic
Mark G Jones et al.
Clinica chimica acta; international journal of clinical chemistry, 361(1-2), 150-158 (2005-07-05)
Previous work by others have suggested the occurrence of one or more chemical or metabolic 'markers' for ME/CFS including specific amino acids and organic acids and a number of unidentified compounds (CFSUM1, CFSUM2). We have shown elsewhere that CFSUM1 is
F A Muskiet et al.
Clinical chemistry, 25(7), 1281-1284 (1979-07-01)
We report quantitative data on beta-glucuronidase- and sulfatase-hydrolyzable conjugates of homovanillic acid, 3,4-dihydroxyphenylacetic acid, p-hydroxyphenylacetic acid, and vanillic acid in the urine of 20 apparently normal and healthy control persons and of three patients with neuroblastoma. We used organic solvent
Katheryn M Goodrich et al.
Journal of agricultural and food chemistry, 62(46), 11190-11199 (2014-10-23)
Metabolism of flavanols (catechins, procyanidins) by gut microbiota has been extensively characterized. Comparatively little is known about accumulation of flavanols and their metabolites in the colon tissues, particularly during chronic exposure to low doses. Mice were fed low doses of
Korean J. Med. Chem., 1, 2-2 (1991)
David S Wishart et al.
Nucleic acids research, 37(Database issue), D603-D610 (2008-10-28)
The Human Metabolome Database (HMDB, http://www.hmdb.ca) is a richly annotated resource that is designed to address the broad needs of biochemists, clinical chemists, physicians, medical geneticists, nutritionists and members of the metabolomics community. Since its first release in 2007, the
Ali A Akhiani et al.
Cancer immunology research, 8(12), 1532-1541 (2020-09-25)
The phosphatidylinositol-4,5-bisphosphate-3 kinase-δ (PI3Kδ) inhibitor idelalisib, used alone or in combination with anti-CD20, is clinically efficacious in B-cell lymphoma and chronic lymphocytic leukemia (CLL) by promoting apoptosis of malignant B cells. PI3K regulates the formation of reactive oxygen species (ROS)
Sachiko Hirota et al.
Journal of agricultural and food chemistry, 53(9), 3265-3272 (2005-04-28)
Local pH in the oral cavity can decrease to below 7 at the site where acid-producing bacteria are proliferating. Effects of pH on nitration of 4-hydroxyphenylacetic acid were studied using dialyzed human saliva. Dialyzed saliva nitrated 4-hydroxyphenylacetic acid to 4-hydroxy-3-nitrophenylacetic
Ahmed Sadik et al.
Cell, 182(5), 1252-1270 (2020-08-21)
Aryl hydrocarbon receptor (AHR) activation by tryptophan (Trp) catabolites enhances tumor malignancy and suppresses anti-tumor immunity. The context specificity of AHR target genes has so far impeded systematic investigation of AHR activity and its upstream enzymes across human cancers. A
M V Spanaki et al.
Neurology, 53(7), 1518-1522 (1999-10-26)
To investigate the effect of vigabatrin (VGB; gamma-vinyl gamma-aminobutyric acid [GABA]), a selective irreversible GABA-transaminase inhibitor, on cerebral metabolic rate for glucose (CMRGlc) and cerebral blood flow (CBF) measured with 18F-fluorodeoxyglucose (FDG) PET and 15O water PET. Antiepileptic drugs (AEDs)
K Kobayashi et al.
Clinica chimica acta; international journal of clinical chemistry, 123(1-2), 161-168 (1982-08-04)
Using reversed-phase high-performance liquid chromatography and electrochemical detection with a rapid one-step purification on a Sephadex G-10 column, we have developed a sensitive technique to measure p-hydroxyphenylacetic acid, the oxidatively deaminated metabolite of p-tyramine. The metabolite was measured in cerebrospinal
S R Perosa et al.
Epilepsia, 43 Suppl 5, 159-161 (2002-07-18)
This work studied the profile of glycosaminoglycans (GAGs) in the hippocampus, cortex, and cerebrospinal fluid of patients with temporal lobe epilepsy (TLE). The GAGs were analyzed by agarose gel electrophoresis, enzymatic degradation, and enzyme-linked immunosorbent assay (ELISA). The hippocampus of
A A Roĭ et al.
Mikrobiolohichnyi zhurnal (Kiev, Ukraine : 1993), 74(5), 74-80 (2012-11-06)
It has been shown that bacteria of the genus Bacillus inhibited the development of infection caused by Clavibacter michiganensis subsp. michiganensis, in tomatoes. Pre-sowing seed treatment with suspensions of Bacillus subtilis IMV B-7023 and Bacillus pumilus 3 enhanced resistance of
Kai Zhang et al.
Journal of agricultural and food chemistry, 52(2), 222-227 (2004-01-22)
A GC-MS method was developed for the determination of various flavonoids and phenolic and benzoic acids in human plasma. The procedure involved the extraction of flavonoids and phenolic and benzoic acids with ethyl acetate, followed by the derivatization of the
Elaine F Walker et al.
Neuropsychiatry, neuropsychology, and behavioral neurology, 15(1), 10-17 (2002-03-06)
To examine plasma cortisol, adrencorticotropin hormone, and indicators of catecholamine activity in monozygotic twins discordant for schizophrenia or major affective disorders. Previous research has suggested that catecholamines play a role in the etiology of major mental illness. Several findings have
Arun Sreekumar et al.
Nature, 457(7231), 910-914 (2009-02-13)
Multiple, complex molecular events characterize cancer development and progression. Deciphering the molecular networks that distinguish organ-confined disease from metastatic disease may lead to the identification of critical biomarkers for cancer invasion and disease aggressiveness. Although gene and protein expression have
E B Cady et al.
Magnetic resonance in medicine, 32(6), 764-767 (1994-12-01)
Cerebral in vivo proton magnetic resonance spectroscopy of 13 newborn infants displaying seizures and receiving phenobarbitone, in one case supplemented by phenytoin, showed signals from propan-1,2-diol (the injection vehicle for both these anticonvulsants). Subsequent in vitro spectroscopy of cerebro spinal
K Q Do et al.
Journal of neurochemistry, 65(6), 2652-2662 (1995-12-01)
HPLC and gas chromatography-mass spectrometry analyses of 18 amino acids, N-acetylaspartate, N-acetylaspartylglutamate, and 5-hydroxyindoleacetic acid, derived from serotonin, and homovanillic acid, derived from dopamine, were performed in CSF collected from a group of patients with schizophrenia who either had been
K Kobayashi et al.
No to shinkei = Brain and nerve, 34(8), 769-774 (1982-08-01)
Using reversed-phase high-performance liquid chromatography and electrochemical detection with a rapid one-step purification on Sephadex G-10 column, we have developed a sensitive technique to measure p-hydroxyphenylacetic acid (PHPA), the oxidatively deaminated metabolite of p-tyramine, in cerebrospinal fluid (CSF). The method
Uriel Heresco-Levy et al.
Schizophrenia research, 91(1-3), 14-21 (2007-02-06)
Prepulse inhibition (PPI) of the startle reflex, a measure of sensorimotor gating, is decreased in schizophrenia. The validity of a glutamatergic, N-methyl-d-aspartate receptor (NMDAR)-mediated model of PPI disruption is presently equivocal. The NMDAR antagonist ketamine disrupts PPI in rodents, but
Sinéad Currivan et al.
Journal of chromatography. A, 1402, 82-93 (2015-05-30)
Zwitterionic methacrylate based polymeric monolithic columns were prepared in two-step polymerizations, with reduced polymerization times. Characteristic properties such as hydrodynamic permeability, porosity, retention factors, and pore size distribution charts were used for column evaluation. A scaffold column was fabricated by
Lan Luan et al.
Zhong yao cai = Zhongyaocai = Journal of Chinese medicinal materials, 33(2), 220-221 (2010-06-26)
To study the chemical constituents of the extract with water from Forsythia suspensa. The compounds were isolated and repeatedly purified on TLC, silica gel column chromatograph, gel column chromatography, and preparative HPLC, and the structures were elucidated by physico-chemical properties
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