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显示 1-30 共 44 条结果 关于 "46794" 范围 论文
Alfonso Pérez-Garrido et al.
Bioorganic & medicinal chemistry, 17(2), 896-904 (2008-12-06)
This paper reports a QSAR study for predicting the complexation of a large and heterogeneous variety of substances (233 organic compounds) with beta-cyclodextrins (beta-CDs). Several different theoretical molecular descriptors, calculated solely from the molecular structure of the compounds under investigation
Anna Białk-Bielińska et al.
Chemosphere, 86(10), 1059-1065 (2011-12-27)
Sulfonamides (SAs) are one of the oldest groups of veterinary chemotherapeutic agents. As these compounds are not completely metabolized in animals, a high proportion of the native form is excreted in feces and urine. They are therefore released either directly
Monica J Daood et al.
Pediatric research, 72(5), 455-459 (2012-08-21)
Hazardous levels of bilirubin produce oxidative stress in vitro and may play a role in the genesis of bilirubin-induced neurologic dysfunction (BIND). We hypothesized that the antioxidants taurourosdeoxycholic acid (TUDCA), 12S-hydroxy-1,12-pyrazolinominocycline (PMIN), and minocycline (MNC) inhibit oxidative stress and block
Rapid high-performance liquid chromatographic determining technique of sulfamonomethoxine, sulfadimethoxine, and sulfaquinoxaline in eggs without use of organic solvents.
Analytica Chimica Acta null
Jean Guillon et al.
Bioorganic & medicinal chemistry, 16(20), 9133-9144 (2008-09-30)
Following our search for antimalarial compounds, novel series of ferrocenic pyrrolo[1,2-a]quinoxaline derivatives 1-2 were synthesized from various substituted nitroanilines and tested for in vitro activity upon the erythrocytic development of Plasmodiumfalciparum strains with different chloroquine-resistance status. The pyrrolo[1,2-a]quinoxalines 1 were
Sae Young Lee et al.
PloS one, 10(4), e0123306-e0123306 (2015-04-10)
Hypertriglyceridemia (HTG) is a risk factor for atherosclerotic cardiovascular disease (CVD). We investigated alterations in plasma metabolites associated with borderline-to-moderate HTG (triglycerides (TG) 150-500 mg/dL). Using UPLC-LTQ-Orbitrap mass spectrometry analysis, the metabolomics profiles of 111 non-diabetic and non-obese individuals with
Sayaka Kemmochi et al.
The Journal of toxicological sciences, 37(3), 475-482 (2012-06-13)
Cochineal extracts (CE) is a coccid-derived natural food colorant containing carminic acid (CA) as an active ingredient that potentiates inhibition of tissue proteolysis mediated by activation of plasma hyaluronan-binding protein (PHBP). In our previous study, dietary administered CE (CA: 28.5%
Sheng-Fu Yang et al.
Water research, 45(11), 3389-3397 (2011-05-03)
This study investigated the adsorption, desorption, and biodegradation characteristics of sulfonamide antibiotics in the presence of activated sludge with and without being subjected to NaN(3) biocide. Batch experiments were conducted and the relative contributions of adsorption and biodegradation to the
Naomi L Kruhlak et al.
Toxicology mechanisms and methods, 18(2-3), 217-227 (2008-01-01)
ABSTRACT Drug-induced phospholipidosis (PL) is a condition characterized by the accumulation of phospholipids and drug in lysosomes, and is found in a variety of tissue types. PL is frequently manifested in preclinical studies and may delay or prevent the development
Alexandra Dheilly et al.
Antimicrobial agents and chemotherapy, 56(1), 189-196 (2011-10-12)
An experiment was conducted in animal facilities to compare the impacts of four avian colibacillosis treatments-oxytetracycline (OTC), trimethoprim-sulfadimethoxine (SXT), amoxicillin (AMX), or enrofloxacin (ENR)-on the susceptibility of Escherichia coli in broiler intestinal tracts. Birds were first orally inoculated with rifampin-resistant
Maki Kanda et al.
Journal of AOAC International, 98(1), 230-247 (2015-04-11)
Residues of 37 polar veterinary drugs belonging to six families (quinolones, tetracyclines, macrolides, lincosamides, sulfonamides, and others) in livestock and fishery products were determined using a validated LC-MS/MS method. There were two key points in sample preparation. First, extraction was
Denis Fourches et al.
Chemical research in toxicology, 23(1), 171-183 (2009-12-18)
Drug-induced liver injury is one of the main causes of drug attrition. The ability to predict the liver effects of drug candidates from their chemical structures is critical to help guide experimental drug discovery projects toward safer medicines. In this
Eberhard Scheuch et al.
Journal of pharmaceutical and biomedical analysis, 102, 377-385 (2014-12-03)
The non-opiate analgesic drug flupirtine was shown in vitro to undergo hydrolysis followed by N-acetylation to form D13223, glucuronidation and conjugation with glutathione to form the stable mercapturic acid derivatives M-424 and M-466. To quantify flupirtine and its metabolites in
Hanwen Sun et al.
Drug testing and analysis, 3(5), 300-305 (2011-02-03)
A novel chemiluminescence (CL) quenching method for the determination of sulfonamides is proposed. The CL reaction between Ag(III) complex [Ag(HIO₆)₂]⁵⁻ and luminol in alkaline solution was investigated. The quenching effect of sulfonamides on CL emission of [Ag(HIO₆)₂]⁵⁻-luminol system was found.
K Louati et al.
Annales pharmaceutiques francaises, 69(2), 91-99 (2011-03-29)
Sulfadimethoxine was subjected to different International Conference on Harmonisation prescribed stress conditions (hydrolysis, oxidation and photolysis). A stability-indicating high-performance liquid chromatography method was developed for analysis of the drug in the presence of its major degradation products. It involved a
Yuan Zhang et al.
Environmental science and pollution research international, 20(4), 2372-2380 (2012-08-21)
Degradation of three sulfonamides (SAs), namely sulfamethoxazole (SMX), sulfamethazine (SMZ), and sulfadimethoxine (SDM) in surface water and sediments collected from Taihu Lake and Dianchi Lake, China was investigated in this study. The surface water (5-10 cm) was collected from the
Karin Kipper et al.
The Analyst, 136(21), 4587-4594 (2011-09-17)
Two fluoroalcohols--1,1,1,3,3,3-hexafluoro-2-propanol (HFIP) and 1,1,1,3,3,3-hexafluoro-2-methyl-2-propanol (HFTB)--were evaluated for the first time as volatile buffer acids in the basic mobile phase for reversed-phase chromatography with electrospray ionization-mass spectrometric (LC-ESI-MS) detection of five antibiotics. Chromatographic separation as well as positive and negative
Ailiang Chen et al.
Biosensors & bioelectronics, 42, 419-425 (2012-12-12)
Quickly and sensitively detection of antibiotic residues in animal products often requires time-consuming techniques and expensive instrumentation. To address these limitations, a high sensitive aptasensor for sulfadimethoxine (SDM) using unmodified gold nanoparticles (AuNPs) was developed in the present study. The
Atsunori Yafune et al.
Toxicology letters, 219(3), 203-210 (2013-03-29)
We have previously reported that hepatocarcinogens increase liver cells expressing p21(Cip1), a G1 checkpoint protein and M phase proteins after 28-day treatment in rats. This study aimed to identify early prediction markers of carcinogens available in many target organs after
Dan Liu et al.
Chemical & pharmaceutical bulletin, 59(1), 63-71 (2011-01-08)
Recently, dendrimers have been widely used in medical applications such as drug delivery and gene transfection. In this study, a pH-sensitive diblock copolymer of poly(methacryloyl sulfadimethoxine) (PSD) and polyethylene glycol (PEG) modified by lactose (LA-PEG-b-PSD) was synthesized. The pK(a) value
Guntis Cepurnieks et al.
Journal of pharmaceutical and biomedical analysis, 102, 184-192 (2014-10-06)
A new multi-class method has been developed for the identification and quantification of the residues of 26 antibiotics from different classes (sulfonamides, macrolides, tetracyclines, penicillins, and quinolones) in milk and meat by ultra performance liquid chromatography coupled to hybrid quadrupole
Sayaka Kemmochi et al.
The Journal of veterinary medical science, 73(5), 655-664 (2011-01-06)
We have shown phosphoinositide 3-kinase (PI3K)/Akt signaling activation in thyroid capsular invasive carcinomas (CICs), which are highly induced by promotion with sulfadimethoxine (SDM) in a rat 2-stage thyroid carcinogenesis model. To examine the potency of calcitriol, a synthetic vitamin D3
Rashad Alkasir et al.
Microbial drug resistance (Larchmont, N.Y.), 19(2), 138-145 (2012-11-13)
Staphylococcus aureus is a major pathogen associated to bovine mastitis and has the ability to form a slow-growing population termed the small colony variants (SCVs). From 20 samples of 5 chronic S. aureus cases, 1 SCV isolate (SCV102) was recovered
Zhe Meng et al.
Food chemistry, 174, 597-605 (2014-12-23)
A novel UPLC-MS/MS method for quantification and confirmation of eight fluoroquinolones, five sulphonamides (SAs) and four acetyled metabolites in milk is developed. Their main fragmentation pathways were presented. The limits of quantification were in the range of 0.01-0.29 μg kg(-1)
Lou Ann Tom et al.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 909, 61-64 (2012-11-17)
Four non-covalently prepared molecularly imprinted polymers (MIPs) for sulfadimethoxine (SDM) were prepared using different ratios of SDM template, methacrylic acid monomer, and ethylene glycol dimethacrylate cross-linker. The imprinting factor (IF) was calculated by comparing the retention of SDM on the
O A Chiesa et al.
Journal of veterinary pharmacology and therapeutics, 35(3), 249-258 (2011-08-13)
Sulfonamides are among the oldest, but still effective, antimicrobial veterinary medicines. In steers and dairy cows, the sulfonamides are effective in the treatment of respiratory disease and general infections. Sulfadimethoxine (SDM) has been approved by US Food and Drug Administration
M Díaz-Álvarez et al.
Journal of chromatography. A, 1357, 158-164 (2014-05-02)
In this work, molecularly imprinted polymer (MIP) beads have been prepared and evaluated for the development of a supported liquid membrane-protected micro-solid phase extraction method for the analysis of sulfonamides (SAs) in aqueous samples. The performance of MIP beads was
Hiroichi Ozaki et al.
Veterinary microbiology, 150(1-2), 132-139 (2011-01-15)
To investigate the effects of rearing practices of commercial broiler chickens on the incidence of antimicrobial resistance in commensal Escherichia coli isolates, fecal E. coli isolates obtained in 4 farms were screened for anitimicrobial resistance. Ten E. coli isolates were
Giorgio Ottaviani et al.
Journal of medicinal chemistry, 50(4), 742-748 (2007-02-16)
The development of in silico and in vitro tools to estimate or predict the passive human skin permeation and distribution of new chemical entities, useful in dermal drug delivery, in absorption studies of toxic compounds, and in the cosmetics industry
Yoshio Ota et al.
Toxicological sciences : an official journal of the Society of Toxicology, 127(2), 339-347 (2012-03-06)
To clarify roles of prostaglandin synthases in rat thyroid follicular carcinogenesis, effects of an antithyroid agent, sulfadimethoxine (SDM), and two prostaglandin H synthase (COX) inhibitors, indomethacin and nimesulide, on prostaglandin synthase expression, follicular cell proliferation, and tumor induction in thyroids
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