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显示 31-60 共 119 条结果 关于 "T0891" 范围 论文
Didier Tousch et al.
Journal of agricultural and food chemistry, 62(31), 7738-7745 (2014-06-17)
In the present study, we obtained a dried burdock root extract (DBRE) rich in caffeoylquinic acids derivatives. We performed the chemical characterization of DBRE and explored its antihyperglycemic potential in both in vitro and in vivo experiments. Chemical analysis of
Shang-Jin Kim et al.
Circulation. Arrhythmia and electrophysiology, 5(6), 1184-1192 (2012-11-20)
Cardiac ATP-sensitive K(+) channels have been suggested to contribute to the adaptive physiological response to metabolic challenge after β-adrenoceptor stimulation. However, an increased atrial K(+)-conductance might be expected to be proarrhythmic. We investigated the effect of ATP-sensitive K(+) channel blockade
Yu Fen Zheng et al.
Food and chemical toxicology : an international journal published for the British Industrial Biological Research Association, 68, 117-127 (2014-03-19)
We evaluated the potential of BST204, a purified dry extract of ginseng, to inhibit or induce human liver cytochrome P450 enzymes (CYPs) and UDP-glucuronosyltransferases (UGTs) in vitro to assess its safety. In vitro drug interactions of four bioactive ginsenosides of
Sean Ekins et al.
Drug metabolism and disposition: the biological fate of chemicals, 38(12), 2302-2308 (2010-09-17)
Drug-induced liver injury (DILI) is one of the most important reasons for drug development failure at both preapproval and postapproval stages. There has been increased interest in developing predictive in vivo, in vitro, and in silico models to identify compounds
[Intravenous tolbutamide test in the diagnosis of diabetes. Critical review and case studies].
C Fuà et al.
La Clinica terapeutica, 60(3), 229-243 (1972-02-15)
Elisabet Lázaro et al.
Journal of medicinal chemistry, 51(7), 2009-2017 (2008-03-20)
We report here a new, label-free approach to measure serum protein binding constants. The assay is able to measure HSA K d values in the milli-molar to micromolar range. The protein is not immobilized on any surface and the assay
Genetic factors influencing the metabolism of tolbutamide.
D J Back et al.
Pharmacology & therapeutics, 44(2), 147-155 (1989-01-01)
Cheng-Lung Hsu et al.
Oncotarget, 5(8), 2187-2197 (2014-04-20)
Although minoxidil has been used for more than two decades to treat androgenetic alopecia (AGA), an androgen-androgen receptor (AR) pathway-dominant disease, its precise mechanism of action remains elusive. We hypothesized that minoxidil may influence the AR or its downstream signaling.
Nico Scheer et al.
Molecular pharmacology, 82(6), 1022-1029 (2012-08-25)
Compared with rodents and many other animal species, the human cytochrome P450 (P450) Cyp2c gene cluster varies significantly in the multiplicity of functional genes and in the substrate specificity of its enzymes. As a consequence, the use of wild-type animal
Sang Yoon Lee et al.
Xenobiotica; the fate of foreign compounds in biological systems, 45(2), 131-138 (2014-08-26)
1. The herb-drug interaction potential of Hwang-Ryun-Hae-Dok-Tang (HR) extracts mediated by cytochrome P450 (CYP) inhibition was determined using human liver microsomes. 2. HR strongly inhibited CYP1A2 and moderately inhibited CYP2C19, CYP2D6, and CYP3A4 (testosterone) but not CYP2A6, CYP2B6, CYP2C8, CYP2C9, and CYP3A4
A Guerra et al.
European journal of medicinal chemistry, 45(3), 930-940 (2009-12-22)
A neural model based on a numerical molecular representation using CODES program to predict oral absorption of any structure is described. This model predicts both high and low-absorbed compounds with a global accuracy level of 74%. CODES/ANN methodology shows promising
Pil H Lee et al.
Bioorganic & medicinal chemistry letters, 20(1), 69-73 (2009-12-08)
A multiple linear regression QSAR model was developed based on a set of 61 compounds with internally consistent permeability data measured across Franz cell. The data was normalized using a mean permeability value of a reference compound, 3-isobutyl-1-methylxanthine (IBMX). The
Ren-ai Xu et al.
Pakistan journal of pharmaceutical sciences, 26(4), 813-817 (2013-07-03)
A "cocktail"of numerous probe drugs to assess the metabolic activity of the corresponding cytochrome P450 enzymes requires that there is no problem of interaction among them. Some interactions among probe drugs can appear and may affect the rate of biotransformation
John T Barr et al.
Drug metabolism and disposition: the biological fate of chemicals, 43(1), 34-41 (2014-10-19)
The mechanistic understanding of interactions between diet-derived substances and conventional medications in humans is nascent. Most investigations have examined cytochrome P450-mediated interactions. Interactions mediated by other phase I enzymes are understudied. Aldehyde oxidase (AO) is a phase I hydroxylase that
Phedias Diamandis et al.
Nature chemical biology, 3(5), 268-273 (2007-04-10)
The identification of self-renewing and multipotent neural stem cells (NSCs) in the mammalian brain holds promise for the treatment of neurological diseases and has yielded new insight into brain cancer. However, the complete repertoire of signaling pathways that governs the
Wei Guo et al.
Environmental toxicology and pharmacology, 38(3), 901-912 (2014-12-03)
This study aimed to identify the specific cytochrome P450 (CYP450) enzymes involved in the metabolism of dipfluzine hydrochloride using the combination of a chemical inhibition study, a correlation analysis and a panel of recombinant rat CYP450 enzymes. The incubation of
Kim D Mooiman et al.
The Journal of pharmacy and pharmacology, 66(9), 1339-1346 (2014-04-16)
The aim of this study is to establish the inhibitory effects of 14 commonly used complementary and alternative medicines (CAM) on the metabolism of cytochrome P450 2C9 (CYP2C9) substrates 7-methoxy-4-trifluoromethyl coumarine (MFC) and tolbutamide. CYP2C9 is important for the metabolism
Kayo Yuminoki et al.
Journal of pharmaceutical sciences, 103(11), 3772-3781 (2014-09-12)
In this study, we reported the application of Povacoat®, a hydrophilic polyvinylalcohol copolymer, as a dispersion stabilizer of nanoparticles of poorly water-soluble compounds. In addition, the influence of aggregation of the nanoparticles on their solubility and oral absorption was studied.
Hussain Md Shahjalal et al.
Journal of molecular cell biology, 6(5), 394-408 (2014-06-28)
Human induced pluripotent stem (hiPS) cells are considered a potential source for the generation of insulin-producing pancreatic β-cells because of their differentiation capacity. In this study, we have developed a five-step xeno-free culture system to efficiently differentiate hiPS cells into
Ju-Hee Ryu et al.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 983-984, 62-67 (2015-01-27)
A suitable liquid chromatography tandem mass spectrometry (LC-MS/MS) method is required to determine pelubiprofen and its active metabolite, trans-alcohol (M-D), in human plasma for pharmacokinetic studies of pelubiprofen preparations. After one-step liquid-liquid extraction (LLE) using methyl tert-butyl ether (MTBE), pelubiprofen
Philip Reinoß et al.
Current biology : CB, 30(23), 4579-4593 (2020-09-26)
Locomotion requires energy, yet animals need to increase locomotion in order to find and consume food in energy-deprived states. While such energy homeostatic coordination suggests brain origin, whether the central melanocortin 4 receptor (Mc4r) system directly modulates locomotion through motor
David Buttar et al.
Bioorganic & medicinal chemistry, 18(21), 7486-7496 (2010-09-28)
The displacement of probes that bind selectively to subdomains IIA or IIIA on human serum albumin (HSA) by competing compounds has been followed using fluorescence spectroscopy, and has therefore been used to assign a primary binding site for these compounds
Xuejia Zhai et al.
Die Pharmazie, 68(1), 19-26 (2013-03-01)
Cytochrome P450 enzymes are responsible for the oxidative metabolism of most pharmaceutical compounds. A "cocktail" approach which employs simultaneous administration of a mixture of substrates of CYP enzymes was often used to assess the metabolic activity of multiple P450 forms
Shaojun Yang et al.
The Journal of pharmacology and experimental therapeutics, 352(3), 529-540 (2015-01-01)
Sepiapterin reductase (SPR) catalyzes the reduction of sepiapterin to dihydrobiopterin (BH2), the precursor for tetrahydrobiopterin (BH4), a cofactor critical for nitric oxide biosynthesis and alkylglycerol and aromatic amino acid metabolism. SPR also mediates chemical redox cycling, catalyzing one-electron reduction of
Valentina L Kouznetsova et al.
Bioorganic & medicinal chemistry, 19(11), 3320-3340 (2011-05-17)
Organic anion transporter 1 (Oat1), first identified as NKT, is a multispecific transporter responsible for the handling of drugs and toxins in the kidney and choroid plexus, but its normal physiological role appears to be in small molecule metabolite regulation.
Bryan Stone et al.
Brain research, 1496, 94-103 (2012-12-19)
There is increasing evidence that alterations in metabolism can affect seizure susceptibility in a wide range of organisms. In order to investigate the link between metabolism and seizures, we took advantage of a group of Drosophila mutants, the Bang-sensitive (BS)
Sridhar Veeraraghavan et al.
Journal of pharmaceutical and biomedical analysis, 107, 151-158 (2015-01-17)
Efficacy assessments using a combination of ibrutinib and lenalidomide necessitate the development of an analytical method for determination of both drugs in plasma with precision. A high performance liquid chromatography-tandem mass spectrometry (LC-MS/MS) method was developed for the simultaneous determination
Yasinalli Tamboli et al.
Bioorganic & medicinal chemistry letters, 22(11), 3810-3815 (2012-05-09)
We describe a new class of NO-donor hypoglycemic products obtained by joining tolbutamide, a typical hypoglycemic sulfonylurea, with a NO-donor moiety through a hard link. As NO-donors we chose either furoxan (1,2,5-oxadiazole 2-oxide) derivatives or the classical nitrooxy function. A
Changcheng Sun et al.
Acta physiologica (Oxford, England), 231(4), e13626-e13626 (2021-02-14)
Oxytocin plays an important role in social recognition in rodents, which is mediated predominantly by the olfactory system. Although oxytocin modulates neural activity in the olfactory bulb, the underlying mechanism is largely unknown. Here, we studied how direct infusion of
Rachel E Jarrard et al.
Molecular pharmacology, 83(1), 191-205 (2012-10-17)
Tolbutamide and gliclazide block the K(ATP) channel K(ir)6.2/Sur1, causing membrane depolarization and stimulating insulin secretion in pancreatic beta cells. We examined the ability of the EPAC-selective cAMP analog 8-pCPT-2'-O-Me-cAMP-AM to potentiate the action of these drugs and the mechanism that
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