Determination of benzalkonium chloride by reversed-phase high-pressure liquid chromatography.

abstract：:The effect of pretreating callus membranes with dimethyl sulfoxide, dimethylacetamide, dimethylformamide, formamide, dioxane, or methyl orthoformate on sarin permeability was studied at three temperatures to determine the activation energy for transport. In addition, the effect of membrane pretreatment on permeability...

journal_title：Journal of pharmaceutical sciences

authors： Matheson LE,Wurster DE,Ostrenga JA

更新日期：1979-11-01 00:00:00

abstract：:Numerous case reports have documented that phenylpropanolamine (PPA) stimulates the central nervous system with symptoms ranging from anxiety and hallucinations to grand mal seizures produced by overdoses. Most of these reports have occurred following concomitant use of caffeine which in high doses is known to cause s...

journal_title：Journal of pharmaceutical sciences

authors： Walker JS

更新日期：1989-12-01 00:00:00

abstract：:Electrolytes often break emulsions to which they were added as active ingredients, adjuvants, or impurities. The stability of oil-in-water emulsions containing octoxynol 9 NF as the emulsifier and various added electrolytes was investigated by measuring droplet size, turbidity, and oil separation on storage at various...

journal_title：Journal of pharmaceutical sciences

authors： Schott H,Royce AE

更新日期：1983-12-01 00:00:00

abstract：:Chromatographic gel filtration matrixes used in various separation techniques are subject to microbial contamination. The need for a microbe-free column is critical when preparing materials that require a low or zero microbial count. This report proposes two alternative washing systems: 0.02 N HCl containing 0.81% NaC...

journal_title：Journal of pharmaceutical sciences

authors： Wen LF,Bohannon T,Crabb A,Mamaril F

更新日期：1980-02-01 00:00:00

abstract：:Samples of ethacrynic acid were treated with methanol-hydrochloric acid or with diazomethane. GLC and mass spectrometric analysis indicated that the methanol-hydrochloric acid reaction gave the expected methyl ester, whereas diazomethane treatment gave a compound containing an additional 14 mass units. Accurate mass m...

journal_title：Journal of pharmaceutical sciences

authors： Midha KK,Hubbard JW,Charette C,Jun HW

更新日期：1978-07-01 00:00:00

abstract：:The transdermal delivery of 2 fluorescent probes with similar molecular weight but different lipophilicity, into and through the skin from 2 commercially available transdermal bases, pluronic lecithin organogel, and Lipoderm® has been evaluated. First, in vitro penetration of fluorescein sodium and fluorescein (free a...

journal_title：Journal of pharmaceutical sciences

authors： Zhang Q,Song Y,Page SW,Garg S

更新日期：2018-02-01 00:00:00

abstract：:A simulation study was done to determine if 72 h is the most informative sampling duration for bioequivalence (BE) determination in parallel-designed BE studies with drugs that have half-lives of at least 30 h. The impact of absorption and elimination half-lives on informative sampling was evaluated. Two-treatment par...

journal_title：Journal of pharmaceutical sciences

authors： El-Tahtawy A,Harrison F,Zirkelbach JF,Jackson AJ

更新日期：2012-11-01 00:00:00

abstract：:The effect of caffeine on the absorption of ergotamine from the rat small intestine was studied. The results of a series of experiments showed that caffeine significantly enhanced absorption of ergotamine from solutions of pH 5.0 when both substances were in solution and when an intact blood supply was either absent (...

journal_title：Journal of pharmaceutical sciences

authors： Anderson JR,Drehsen G,Pitman IH

更新日期：1981-06-01 00:00:00

abstract：:The effect of particle size on the coloring properties of aluminum dye lakes was studied. Lakes impart color by dispersion in the medium to be colored. Dispersion techniques were developed, using scanning electron micrographs for particle sizing. The color strength and the trichromatic colorimetric properties were cal...

journal_title：Journal of pharmaceutical sciences

authors： Wou LL,Mulley BA

更新日期：1988-10-01 00:00:00

abstract：:An HPLC method for the simultaneous determination of safrole (S), dihydrosafrole (DHS), and chloromethyldihydrosafrole (CM-DHS) in piperonyl butoxide, with fluorimetric detection and elution gradient, is described. Samples with internal standard (piperonyl isobutyrate) are adsorbed on silica cartridges, then eluted wi...

journal_title：Journal of pharmaceutical sciences

authors： Schreiber-Deturmeny EM,Pauli AM,Pastor JL

更新日期：1993-08-01 00:00:00

abstract：:Gas pycnometry is applied to determine the density of solid materials. The analysis of lyophilisates is particularly challenging because of their porous structure. In this study, the density of raw materials and freeze-dried products was determined using different pycnometric methodologies and gases [helium (He), nitr...

journal_title：Journal of pharmaceutical sciences

authors： Stange U,Scherf-Clavel M,Gieseler H

更新日期：2013-11-01 00:00:00

abstract：:The pharmacokinetics of drug delivery from transdermal controlled-release devices consisting of (a) a membrane plus a reservoir or (b) a monolithic slab are examined. For the period when the devices act as if the drug reservoir were infinite, simple relationships for the steady-state slope and time lag are derived and...

journal_title：Journal of pharmaceutical sciences

authors： Berner B

更新日期：1985-07-01 00:00:00

abstract：:A dual pH/redox responsive copper-glyglycine-prednisolone succinate-loaded nanoliposomal (NL) sludge was successfully synthesized and optimized using a Box-Behnken design of experiments. Preformulation design variables indicated that relative ratios of phospholipids, considerably influences NL size, thus altering the ...

journal_title：Journal of pharmaceutical sciences

authors： Mavuso S,Marimuthu T,Kumar P,Kondiah PPD,du Toit LC,Choonara YE,Pillay V

更新日期：2018-04-01 00:00:00

abstract：:A method for establishing sampling plans for in-house limits that fix both the producer's and consumer's risks is presented for pharmaceutical systems in which both between-batch and within-batch variations are present. Such plans can always be constructed and require more or less sample assays depending on the variab...

journal_title：Journal of pharmaceutical sciences

authors： Bolton S

更新日期：1983-04-01 00:00:00

abstract：:Even though gelatin is the most widely used polymeric excipient in pharmaceutical products, scant attention has been paid to its interaction with small organic molecules. The present work deals with the interaction of gelatin and four monosulfonated or monocarboxylated azo dyes having hydrocarbon moieties of different...

journal_title：Journal of pharmaceutical sciences

authors： Gautam J,Schott H

更新日期：1994-07-01 00:00:00

abstract：:A suspension of micronized prednisolone acetate was separated into four fractions by the technique of centrifugal elutriation. Data showed that each fraction had a narrow particle size. The dissolution experiments were carried out under sink conditions (less than 10% of saturation concentration) in a dissolution appar...

journal_title：Journal of pharmaceutical sciences

authors： Mauger JW,Howard SA,Amin K

更新日期：1983-02-01 00:00:00

abstract：:Treatment of systemic diseases by means of the inhalation route is hampered by uncertainties of the drug dose applied by inhalation. In this study, the hypothesis was tested that by standardization of the breathing maneuver used for inhalation, the interindividual variability of the dose deposited intrathoracically ca...

journal_title：Journal of pharmaceutical sciences

authors： Brand P,Friemel I,Meyer T,Schulz H,Heyder J,Häubetainger K

更新日期：2000-06-01 00:00:00

abstract：:Drug transporters expressed in liver and kidney play a critical role in the elimination of a wide range of drugs and xenobiotics and inhibition of these transporters may therefore cause clinically significant drug-drug interactions (DDIs). Currently, in vitro transporter inhibition data are used to assess the risk tha...

journal_title：Journal of pharmaceutical sciences

authors： Chu X,Chan GH,Evers R

更新日期：2017-09-01 00:00:00

abstract：:The kinetic profile for the decomposition of ditiocarb sodium salt in aqueous solution was achieved with UV-visible absorption spectrometry. The kinetic profile indicates that the decomposition reaction is hydrogen ion-catalyzed over the entire 4-10 pH range and enables the determination of the value of the acid-base ...

journal_title：Journal of pharmaceutical sciences

authors： Martens T,Langevin-Bermond D,Fleury MB

更新日期：1993-04-01 00:00:00

abstract：:Previously, we reported that repeated oral treatment with etoposide (ETP) increased ileal membrane localization of P-glycoprotein (P-gp) and that this was possibly mediated by increased expression of the ezrin/radixin/moesin (ERM)/phosphorylated ERM (p-ERM) via activation of RhoA/ROCK. These changes caused decreases i...

journal_title：Journal of pharmaceutical sciences

authors： Kobori T,Harada S,Nakamoto K,Tokuyama S

更新日期：2013-05-01 00:00:00

abstract：:A high-performance liquid chromatographic method using a linear elution gradient has been developed for the analysis of sulindac, sulindac sulfone, and sulindac sulfide in plasma, urine, bile, and gastric fluid. The methodology uses reverse-phase, radial compression chromatography with gradient elution, and UV detecti...

journal_title：Journal of pharmaceutical sciences

authors： Musson DG,Vincek WC,Constanzer ML,Detty TE

更新日期：1984-09-01 00:00:00

abstract：:The thiazide diuretic chlorothiazide is poorly metabolized, and is predominantly excreted via the kidneys. We have previously shown that chlorothiazide is transported by ATP-binding cassette transporter G2, suggesting a potential role for this transporter in apical efflux of chlorothiazide in the kidney. However, beca...

journal_title：Journal of pharmaceutical sciences

authors： Juhász V,Beéry E,Nagy Z,Bui A,Molnár E,Zolnerciks JK,Magnan R,Jani M,Krajcsi P

更新日期：2013-05-01 00:00:00

abstract：:The adsorption of cimetidine on selected pharmaceuticals including kaolin, activated charcoal, talc, and nonsystemic antacids was determined at pH 5.0 and 25 degrees. The Langmuir and Freundlich adsorption isotherms showed that cimetidine adsorption was significant with activated charcoal, kaolin, talc, and magnesium ...

journal_title：Journal of pharmaceutical sciences

authors： Ganjian F,Cutie AJ,Jochsberger T

更新日期：1980-03-01 00:00:00

abstract：:A general method for predicting the intestinal absorption of a wide range of drugs using multiple regression analysis of their physicochemical properties and the drug-membrane electrostatic interaction was developed. The absorption rates of tested drugs from rat jejunum were measured by the in situ single-pass perfusi...

journal_title：Journal of pharmaceutical sciences

authors： Sugawara M,Takekuma Y,Yamada H,Kobayashi M,Iseki K,Miyazaki K

更新日期：1998-08-01 00:00:00

abstract：:Thymopentin (Tp5) was loaded in poly-butylcyanoacrylate (PBCA) nanoparticles (NP) in order to enhance the oral bioavailability of Tp5. PBCA-Tp5-NP was prepared by nanoprecipitation methods. Dialyzing membrane method was employed to examine the in vitro release of PBCA-Tp5-NP in PBS, and Tp5 samples in the release medi...

journal_title：Journal of pharmaceutical sciences

authors： He W,Jiang X,Zhang ZR

更新日期：2008-06-01 00:00:00

abstract：:The dissolution rates of the two polymorphic forms of sulfathiazole containing polyethylene glycol 4000 were significantly different in water. The effect of agitation on the dissolution rates also was studied. At higher stirring speeds, the dissolution rates of the stable form were affected more than the metastable fo...

journal_title：Journal of pharmaceutical sciences

authors： Niazi S

更新日期：1976-02-01 00:00:00

abstract：:Previously, 1 mL of purified water (hyposmotic) or saline (isosmotic) which dissolved 200 μM of FITC-dextran (FD-4), a nonabsorbable marker, was orally administered to rats, and luminal concentration-time profile of FD-4 was directly measured. In this study, at first, luminal FD-4 concentration was measured after oral...

journal_title：Journal of pharmaceutical sciences

authors： Tanaka Y,Higashino H,Kataoka M,Yamashita S

更新日期：2020-06-01 00:00:00

abstract：:6-Chloro-9-[2-(6-methyl-3-pyridyl)ethyl]-1,2,3,4-tetrahydrocarbazole-2-carboxylic acid hydrochloride lowered serum cholesterol, triglyceride, phospholipid, and free fatty acid levels in normal rats. The compound appeared to have a low toxicity and to be well tolerated in mice, adult and neonatal rats, and rabbits. At ...

journal_title：Journal of pharmaceutical sciences

authors： Dalton C,Pool WR

更新日期：1977-03-01 00:00:00

abstract：:The synthesis of the diethyl analog of neostigmine, its preliminary pharmacology, and its use as an internal standard for the GLC assay of neostigmine are described. Both the diethyl analog and neostigmine undergo thermal demethylation in the injection port. The column selected produced satisfactory resolution and sho...

journal_title：Journal of pharmaceutical sciences

authors： Ward HE Jr,Freeman JJ,Sowell JW,Kosh JW

更新日期：1981-04-01 00:00:00

abstract：:A physiologic pharmacokinetic model describing percutaneous absorption of topically applied compounds in the isolated perfused porcine skin flap (IPPSF) is presented. As an extension of a previously reported hybrid physiologically relevant compartmental model of uptake of intra-arterially administered drug in the IPPS...

journal_title：Journal of pharmaceutical sciences

authors： Williams PL,Carver MP,Riviere JE

更新日期：1990-04-01 00:00:00