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Strana 1 od 92 výsledky
[Determination by thermometric titrimetry of the thermodynamic parameters of water/n-octanol transfer of several non-steroidal anti-inflammatory drugs].
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The calorimetric determination by thermometric titrimetry of the water/n-octanol transfer enthalpies of some non steroidic anti-inflammatory compounds is described. By combining the values obtained with that of the free enthalpies of transfer issuing from the values of corresponding log P, it is
α-Pinene, linalool, and 1-octanol contribute to the topical anti-inflammatory and analgesic activities of frankincense by inhibiting COX-2.
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BACKGROUND
Frankincense oil and water extracts (FOE, FWE) have long been used for external treatment of inflammation and pain. The present study was conducted to identify the active ingredients responsible for the anti-inflammatory and analgesic effects and to determine the underlying
Enhancement of the 1-Octanol/Water Partition Coefficient of the Anti-Inflammatory Indomethacin in the Presence of Lidocaine and Other Local Anesthetics.
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Side effects and excessive potentiation of drug efficacy caused by polypharmacy are becoming important social issues. The apparent partition coefficient of indomethacin (log P'IND) increases in the presence of lidocaine, and this is used as a physicochemical model for investigating polypharmacy. We
Effects of nonsteroidal antiinflammatory drugs on the proton exchange reaction between octanol and water: its correlation with their inhibitions of inflammation and prostaglandin synthesis.
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Effect of various antiinflammatory drugs on proton exchange between octanol OH and water after partition equilibrium between octanol and water at pH 7.4 was examined. These drugs accelerated the proton exchange reaction to different extents. The rate constant of the proton exchange induced by the
Electromembrane extraction (EME) and HPLC determination of non-steroidal anti-inflammatory drugs (NSAIDs) in wastewater samples.
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In this paper, an electromembrane extraction (EME) combined with a HPLC procedure using diode array (DAD) and fluorescence detection (FLD) has been developed for the determination of six widely used non-steroidal anti-inflammatory drugs (NSAIDs): salicylic acid (SAC), ketorolac (KTR), ketoprofen
Enhancement effect of an ethanol/Panasate 800 binary vehicle on anti-inflammatory drug permeation across excised hairless mouse skin.
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The novel binary vehicle system consisting of ethanol (EtOH) and Panasate 800 as tricaprylin was applied to five types of nonsteroidal anti-inflammatory drugs, and its enhancing effect on drug permeation across hairless mouse skin in vitro was assessed. The permeability of all drugs was remarkably
Nanostructures in n-Octanol Equilibrated with Additives and/or Water.
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Fluid fatty alcohols are believed to be nanostructured but broadly amorphous (i.e., noncrystalline) fluids and solvents, including the most popular fatty tissue mimetic, hydrated n-octanol (i.e., hydro-octanol). To check this premise, we studied dry octanol and hydro-octanol as a model of relatively
Use of Polymer Inclusion Membranes (PIMs) as support for electromembrane extraction of non-steroidal anti-inflammatory drugs and highly polar acidic drugs.
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The use of polymer inclusion membranes (PIMs) as support of 1-octanol liquid membrane in electromembrane extraction (EME) procedure is proposed. Synthesis of PIMs were optimized to a composition of 29% (w/w) of cellulose triacetate as base polymer and 71% (w/w) of Aliquat®336 as cationic carrier.
Determination of 4'-isobutylacetophenone and other transformation products of anti-inflammatory drugs in water and sludge from five wastewater treatment plants in Sweden by hollow fiber liquid phase microextraction and gas chromatography-mass spectrometry.
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This work describes the development of a two-phase hollow fiber liquid phase microextraction method for the determination of three hydrophobic transformation products of the nonsteroidal anti-inflammatory drugs ketoprofen, ibuprofen and diclofenac: 3-acetobenzophenone, 4´-isobutylacetophenone and
Miniaturized shake-flask HPLC method for determination of distribution coefficient of drugs used in inflammatory bowel diseases.
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A new method for determination of distribution coefficient of drugs azathioprine, 6-mercaptopurine and 6-thioguanine and nutrient folic acid used in the treatment of inflammatory bowel disease based on a miniaturized shake-flask and HPLC/DAD was developed. Special attention was made to the most
Potential of immobilized artificial membrane chromatography for lipophilicity determination of arylpropionic acid non-steroidal anti-inflammatory drugs.
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Molecular lipophilicity can be expressed by logP or more conveniently by logk, i.e. determined by the traditional shake-flask technique or by liquid chromatography. The logk of 11 arylpropionic non-steroidal anti-inflammatory drugs (NSAIDs) was determined at pH 7.4 of the eluent using two stationary
Determination of widely used non-steroidal anti-inflammatory drugs in water samples by in situ derivatization, continuous hollow fiber liquid-phase microextraction and gas chromatography-flame ionization detector.
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The aim of this study was to develop an analytical procedure which allows the quantification of pharmaceuticals in water at the ng L(-1) level. Hence, it is reported research on the application of a rapid, inexpensive and simple continuous hollow fiber liquid-phase micro extraction (CHF-LPME) for
Determination of non-steroidal anti-inflammatory drugs in urine by the combination of stir membrane liquid-liquid-liquid microextraction and liquid chromatography.
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A stir membrane liquid phase microextraction procedure working under the three-phase mode is proposed for the first time for the determination of six anti-inflammatory drugs in human urine. The target compounds are isolated and preconcentrated using a special device that integrates the extractant
Hollow fiber liquid-phase microextraction and determination of nonsteroidal anti-inflammatories by capillary electrophoresis and sulfonamides by HPLC in human urine.
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In this paper two applications of three-phase HF-LPME for the determination of pharmaceuticals in human urine are proposed: a capillary electrophoresis with a photodiode array detection method for the analysis of seven nonsteroidal anti-inflammatory drugs (NSAIDs) and a high-performance liquid
Orthogonal array designs for the optimization of liquid-liquid-liquid microextraction of nonsteroidal anti-inflammatory drugs combined with high-performance liquid chromatography-ultraviolet detection.
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Orthogonal array designs (OADs) were applied for the first time to optimize liquid-liquid-liquid microextraction (LLLME) conditions for the analysis of three nonsteroidal anti-inflammatory drug residues (2-(4-chlorophenoxy)-2-methylpropionic acid, ketoprofen, and naproxen) in wastewater samples. Six
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