Abstract:
:Simple assays for extraction and determination of the concentrations of the antibiotics oxytetracycline, oxolinic acid, and flumequine in a drug dosage form for farmed fish are described. HPLC with UV detection was used in the analyses. The recovery of all three drugs was approximately 100%, and the precision varied from 0.5-3.0%. The methods are applicable to the production control, quality control, and stability control of the products.
journal_name
J Pharm Scijournal_title
Journal of pharmaceutical sciencesauthors
Rogstad A,Weng Bdoi
10.1002/jps.2600820517subject
Has Abstractpub_date
1993-05-01 00:00:00pages
518-20issue
5eissn
0022-3549issn
1520-6017pii
S0022-3549(15)49118-Xjournal_volume
82pub_type
杂志文章abstract::The effect of micellar sodium lauryl sulfate on the rate of cupric-ion-promoted hydrolysis of some dicarboxylic acid hemiesters was investigated at pH 5, ionic strength 0.1 M, and 40, 45, and 50 degrees. The rate of cupric-ion-promoted hydrolysis of sodium n-decyloxalate in the micellar phase is about 50 times as fast...
journal_title:Journal of pharmaceutical sciences
pub_type: 杂志文章
doi:10.1002/jps.2600651206
更新日期:1976-12-01 00:00:00
abstract::The relationship between the lone tryptophan residue at position 214 and drug binding sites (Sites I and II) in human serum albumin (HSA) was studied by fluorescence energy transfer. The distance between the lone tryptophan residue and ligands bound to HSA was estimated by Förster's equation, taking into consideration...
journal_title:Journal of pharmaceutical sciences
pub_type: 杂志文章
doi:10.1002/jps.2600760510
更新日期:1987-05-01 00:00:00
abstract::A GLC-mass spectrometric assay for methylphenidate in biological fluids was developed using the ethyl ester homolog of the drug as the internal standard. The procedure has a lower level of sensitivity of 1.2 ng/ml and is based on GLC-mass spectrometic monitoring of the m/e 180 ion common to the mass spectra of the N-t...
journal_title:Journal of pharmaceutical sciences
pub_type: 杂志文章
doi:10.1002/jps.2600660633
更新日期:1977-06-01 00:00:00
abstract::Mixture response-surface methodology can be used as a technique to predict solubility in mixed solvent systems. The present report shows that if the intent is to predict solubility in nonideal solutions, mixture response-surface methodology is a better technique than one which assumes a particular mechanism to hold tr...
journal_title:Journal of pharmaceutical sciences
pub_type: 杂志文章
doi:10.1002/jps.2600740206
更新日期:1985-02-01 00:00:00
abstract::Solubility values of a selected group of nonsteroidal anti-inflammatory drugs have been determined in water and 1-octanol as a function of temperature. Thermodynamic functions of dissolution and partition have been calculated and discussed with respect to various physical parameters of each solute and the two solvents...
journal_title:Journal of pharmaceutical sciences
pub_type: 杂志文章
doi:10.1002/jps.2600750106
更新日期:1986-01-01 00:00:00
abstract::Ketoconazole (KTZ) has 2 chiral centers with the therapeutically active form being a racemic mixture of 2 cis-enantiomers, namely, (2R,4S)-(+)-KTZ and (2S,4R)-(-)-KTZ. The aims of the present study were to examine the effects of (+)-KTZ, (-)-KTZ, and (±)-KTZ on aryl hydrocarbon receptor activation and subsequently CYP...
journal_title:Journal of pharmaceutical sciences
pub_type: 杂志文章
doi:10.1016/j.xphs.2015.12.009
更新日期:2016-03-01 00:00:00
abstract::Mathematical models were determined relating preservative concentration and D values (decimal reduction times at 25 degrees C; pH 6.9-7.1) against Escherichia coli in aqueous medium. Preservatives investigated were 2-bromo-2-nitro-1,3-propanediol (Bronopol), N-(hydroxymethyl)-N-(1,3-dihydroxymethyl-2, 5-dioxo-4-imidaz...
journal_title:Journal of pharmaceutical sciences
pub_type: 杂志文章
doi:10.1002/jps.2600740820
更新日期:1985-08-01 00:00:00
abstract::The solubility of phenacetin was determined at five temperatures in solvent mixtures of aprotic-amphiprotic mixtures of dioxane and water. Enthalpy-entropy compensation analysis is used to study the effect of changing polarity of the medium on the solute. The apparent heats of solution and free energies of solution ar...
journal_title:Journal of pharmaceutical sciences
pub_type: 杂志文章
doi:10.1021/js950497o
更新日期:1996-10-01 00:00:00
abstract::Naltrexone (NTX) is an opioid antagonist used for treatment of narcotic dependence and alcoholism. Transdermal naltrexone delivery is desirable to help improve patient compliance. The purpose of this study was to increase the delivery rate of NTX across human skin by using lipophilic alkyl ester prodrugs. Straight-cha...
journal_title:Journal of pharmaceutical sciences
pub_type: 杂志文章
doi:10.1002/jps.10239
更新日期:2002-12-01 00:00:00
abstract::The purpose of this investigation was to determine the effect of body temperature on the pharmacodynamics (convulsant activity) of pentylenetetrazol (PTZ). Rats received an iv infusion of PTZ until the onset of maximal seizures, at which time samples of cerebrospinal fluid (CSF), brain, and blood (for serum) were obta...
journal_title:Journal of pharmaceutical sciences
pub_type: 杂志文章
doi:10.1002/jps.2600801005
更新日期:1991-10-01 00:00:00
abstract::The synthesis, local anesthetic and antiarrhythmic properties, and CNS toxicity of 14 2-(3-alkylaminoalkylamido)-pyrroles are described. Most of the compounds exhibited local anesthetic activity by the guinea pig wheal test, with seven showing comparable or greater activity than lidocaine. Most compounds also exhibite...
journal_title:Journal of pharmaceutical sciences
pub_type: 杂志文章
doi:10.1002/jps.2600700519
更新日期:1981-05-01 00:00:00
abstract::The secondary structure content of microparticulate insulin powders produced by the supercritical antisolvent (SAS) precipitation technique was investigated via Raman spectroscopy. Precipitate samples were generated at 25 and 35 degrees C processing temperatures. Both precipitate samples gave amide I band spectra that...
journal_title:Journal of pharmaceutical sciences
pub_type: 杂志文章
doi:10.1002/jps.2600831203
更新日期:1994-12-01 00:00:00
abstract::In vitro iontophoretic administration of drugs through a microporous polyolefin membrane with hydrophilic urethane polymerfilled pores was done for the ionized drugs dexamethasone sodium phosphate, hydrocortisone sodium phosphate, and prednisolone sodium succinate, and for a nonionizable drug cortisone acetate. Curren...
journal_title:Journal of pharmaceutical sciences
pub_type: 杂志文章
doi:10.1002/jps.2600780308
更新日期:1989-03-01 00:00:00
abstract::By the use of NMR spectroscopy, the highly colored reaction products formed by ouabain or digitoxin in with 1,3,5-trinitrobenzene or 2,4,6-trinitroanisole in the presence of alkali (as used for the determination of these glycosides) are shown to be Meisenheimer complexes. The complexes are produced by attachment of a ...
journal_title:Journal of pharmaceutical sciences
pub_type: 杂志文章
doi:10.1002/jps.2600660544
更新日期:1977-05-01 00:00:00
abstract::The direct photoisomerization of (E)-4-(1-imidazoylmethyl)-cinnamic acid (IMC), a thromboxane synthetase inhibitor, to its (Z)-isomer at pH 2.0 was decelerated by beta-cyclodextrin (beta-CyD) and heptakis(2,6-di-O-methyl)-beta-cyclodextrin (DM-beta-CyD). The photostationary composition [(Z)-isomer:IMC ratio] was shift...
journal_title:Journal of pharmaceutical sciences
pub_type: 杂志文章
doi:10.1002/jps.2600810820
更新日期:1992-08-01 00:00:00
abstract::X-ray diffraction and infrared spectroscopy measurements for the N,N-dimethylformamide (DMF) and dimethyl sulfoxide (DMSO) solvatomorphs of betulonic acid (BA) were investigated. BA [3-oxolup-20(29)-en-28-oic acid, C(30)H(46)O(3)] exhibits a wide spectrum of biological activities and is considered to be a promising na...
journal_title:Journal of pharmaceutical sciences
pub_type: 杂志文章
doi:10.1002/jps.23321
更新日期:2012-12-01 00:00:00
abstract::Alkyl 2-imidazolyl disulfide compounds are novel antitumor agents, one of which is currently being evaluated in Phase I clinical trials. These molecules contain an unsymmetrical disulfide fragment, the lipophilic and electronic contributions of which are still not defined in the literature. Lipophilicity, ionization, ...
journal_title:Journal of pharmaceutical sciences
pub_type: 杂志文章
doi:10.1002/jps.10112
更新日期:2002-07-01 00:00:00
abstract::The axial and radial tensile strengths were compared to the hardness of compressed tablets containing various concentrations of lubricants. Since radial tensile strength measurement considers the thickness of a tablet, and only tensile stress and axial tensile strength express the strength in the direction in which ca...
journal_title:Journal of pharmaceutical sciences
pub_type: 杂志文章
doi:10.1002/jps.2600710625
更新日期:1982-06-01 00:00:00
abstract::The cyclopropyl amine moiety in GSK2879552 (1) degrades hydrolytically in high pH conditions. This degradation pathway was observed during long-term stability studies and impacted the shelf life of the drug product. This article describes the work to identify the degradation impurities, elucidate the degradation mecha...
journal_title:Journal of pharmaceutical sciences
pub_type: 杂志文章
doi:10.1016/j.xphs.2019.04.026
更新日期:2019-09-01 00:00:00
abstract::In water, the antineoplastic drug cisplatin, cis-[PtCl2(NH3)2] (1) hydrolyses slowly to the aqua complexes cis-[Pt(NH3)2Cl(H2O)]+ (2) and, to a small extent, cis-[Pt(NH3)2(H2O)2]2+ (3), which are thought to play an important role in the metabolism of cisplatin. HPLC is a useful technique for monitoring 2 and 3, but on...
journal_title:Journal of pharmaceutical sciences
pub_type: 杂志文章
doi:10.1021/js980287m
更新日期:1999-03-01 00:00:00
abstract::This article presents a theoretical model of transdermal drug delivery from an emulsion-type vehicle that addresses the vehicle heterogeneity and incorporates the prediction of drug transport parameters as function of the vehicle composition. The basic mass transfer model considers interfacial and diffusion resistance...
journal_title:Journal of pharmaceutical sciences
pub_type: 杂志文章
doi:10.1002/jps.21268
更新日期:2008-09-01 00:00:00
abstract::NMR was used to study the binding of acetylcholine, atropine, and physostigmine to acetylcholinesterase. Changes in the linewidth of the N-methyl resonance of acetylcholine, resulting from association with the enzyme during hydrolysis, were utilized to study the enzyme-substrate interaction. Physostigmine inhibited th...
journal_title:Journal of pharmaceutical sciences
pub_type: 杂志文章
doi:10.1002/jps.2600640337
更新日期:1975-03-01 00:00:00
abstract::Neural networks (NN) are computational systems implemented in software or hardware that attempt to simulate the neurological processing abilities of biological systems. A synopsis is presented of the operational characteristics, structures, and applications of NN. The NN technology has primarily been aimed at recognit...
journal_title:Journal of pharmaceutical sciences
pub_type: 杂志文章
doi:10.1002/jps.2600820910
更新日期:1993-09-01 00:00:00
abstract::A novel drug-deliver device based on a self-setting bioactive cement formed from tetracalcium phosphate and dicalcium phosphate has been developed and tested in vitro using bovine insulin and bovine albumin as model polypeptide drugs. Equimolar mixtures of the calcium phosphate powders containing bovine insulin and bo...
journal_title:Journal of pharmaceutical sciences
pub_type: 杂志文章
doi:10.1002/jps.2600830229
更新日期:1994-02-01 00:00:00
abstract::To evaluate the potential of cell-penetrating peptide-based delivery of apoptosis-inducer gene in cancer therapy, a modified HIV-1 TAT peptide (dimerized TAT peptide, dTAT) was studied. The dTAT and plasmid DNA (pDNA) complexes (dTAT-pDNA) were condensed using calcium chloride (dTAT-pDNA-Ca2+). This simple nonviral fo...
journal_title:Journal of pharmaceutical sciences
pub_type: 杂志文章
doi:10.1016/j.xphs.2016.08.023
更新日期:2017-01-01 00:00:00
abstract::Targeted echogenic liposome dispersions for ultrasonic enhancement of vasoactive and pathological components of endothelium and atherosclerosis have recently been developed. The component lipids required for acoustic and targeting properties include phosphatidylcholine, phosphatidylethanolamine phosphatidylglycerol (P...
journal_title:Journal of pharmaceutical sciences
pub_type: 杂志文章
doi:10.1002/jps.1142
更新日期:2001-12-01 00:00:00
abstract::The dissolution behavior and absorption of mefenamic acid following oral and rectal administration from drug:egg albumin solid dispersions have been studied in comparison with those of the drug alone. The interaction of drug with egg albumin in aqueous solution and solid state were examined by solubility analysis, dia...
journal_title:Journal of pharmaceutical sciences
pub_type: 杂志文章
doi:10.1002/jps.2600800517
更新日期:1991-05-01 00:00:00
abstract::Robust higher order structure (HOS) characterization capability and strategy are critical throughout biopharmaceutical development from initial candidate selection and formulation screening to process optimization and manufacturing. This case study describes the utility of several orthogonal HOS methods as investigati...
journal_title:Journal of pharmaceutical sciences
pub_type: 杂志文章
doi:10.1002/jps.24293
更新日期:2015-04-01 00:00:00
abstract::Solid solutions of felodipine with EUDRAGIT E and EUDRAGIT E/NE were shown to dramatically increase the dissolution rate of felodipine in biorelevant media. Of the two polymer systems, extrudates containing 5% EUDRAGIT NE showed a faster dissolution rate and less recrystallization (no precipitation within 2 h). Althou...
journal_title:Journal of pharmaceutical sciences
pub_type: 杂志文章
doi:10.1002/jps.21534
更新日期:2009-04-01 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
pub_type: 杂志文章
doi:10.1002/jps.2600700619
更新日期:1981-06-01 00:00:00