Abstract：
:A method was developed for the baseline separation of common free bile acids by supercritical fluid chromatography. A phenylbonded silica column, with UV detection at 210 nm, and carbon dioxide modified with methanol as the mobile phase were used. The influence of the stationary phase, modifier concentration, temperature, column pressure, and modifier identity on retention was studied. The separation obtained is at least eight times faster than those achieved for similar mixtures by the existing chromatographic techniques. This new procedure is applicable to the assay of ursodeoxycholic acid and chenodeoxycholic acid in capsule and tablet formulations. Individual dosage forms were disintegrated in methanol and an aliquot of the resulting suspension was filtered for the supercritical fluid chromatographic analysis. The method is rapid, accurate, and reproducible.
journal_name
J Pharm Scijournal_title
Journal of pharmaceutical sciencesauthors
Scalia S,Games DEdoi
10.1002/jps.2600820110subject
Has Abstractpub_date
1993-01-01 00:00:00pages
44-7issue
1eissn
0022-3549issn
1520-6017pii
S0022-3549(15)49045-8journal_volume
82pub_type
杂志文章abstract：:Although several mathematical models have been reported for the estimation of human plasma concentration profiles of drug substances after dermal application, the successful cases that can predict human pharmacokinetic profiles are limited. Therefore, the aim of this study is to investigate the prediction of human pla...
journal_title：Journal of pharmaceutical sciences
pub_type： 杂志文章
doi：10.1016/j.xphs.2017.03.003
更新日期：2017-09-01 00:00:00
abstract：:Liposomes containing sodium ioxitalamate were prepared by sonication. Suitable amounts of purified soybean phosphatidylcholine and cholesterol were used at various molar ratios. Stearylamine or dicetylphosphate were added to this lipid composition when charged liposomes were required. After sonication and removal of u...
journal_title：Journal of pharmaceutical sciences
pub_type： 杂志文章
doi：10.1002/jps.2600731223
更新日期：1984-12-01 00:00:00
abstract：:Eprosartan mesylate (SKF 108566-J; EM) is an antihypertensive agent approved for marketing in the USA. EM dihydrate was prepared by three methods, one of which included suspending the anhydrous drug in an aqueous solution of 1.0 M methanesulfonic acid to form a slurry, followed by filtration. The dehydration kinetics ...
journal_title：Journal of pharmaceutical sciences
pub_type： 杂志文章
doi：10.1021/js9900250
更新日期：1999-10-01 00:00:00
abstract：:To study if electrostatic charge initially present in mannitol powder plays a role in the generation of aerosols, mannitol was unipolarly charged to varying magnitudes by tumbling the powder inside containers of different materials. The resulting charge in the powder was consistent with predictions from the triboelect...
journal_title：Journal of pharmaceutical sciences
pub_type： 杂志文章
doi：10.1002/jps.21996
更新日期：2010-05-01 00:00:00
abstract：:The inclusion complexation of homologous derivatives of steroid hormones with cyclodextrins and 2-hydroxypropyl-beta-cyclodextrin (2-HP-beta-CD) was investigated with regard to underlying structure-interaction relationship. The interaction was studied by phase solubility analysis and stabilization effects of complex f...
journal_title：Journal of pharmaceutical sciences
pub_type： 杂志文章
doi：10.1002/jps.2600810808
更新日期：1992-08-01 00:00:00
abstract：:A number of arylidene derivatives of alicyclic ketones and some corresponding oximes, oxime esters, and related compounds were prepared as candidate cytotoxic agents. All of the compounds were evaluated against murine L1210 lymphoid leukemia cells. In general, cytotoxicity was greatest with the alpha,beta-unsaturated ...
journal_title：Journal of pharmaceutical sciences
pub_type： 杂志文章
doi：10.1002/jps.2600830619
更新日期：1994-06-01 00:00:00
abstract：:Nonionic block copolymers are surfactants synthesized using propylene oxide and ethylene oxide, and they can be designed so that individual copolymers have unique vaccine adjuvant properties. We have designed and produced nonionic block copolymers based on high molecular weight (MW), 9-15 kDA, cores of poly(oxypropyle...
journal_title：Journal of pharmaceutical sciences
pub_type： 杂志文章
doi：10.1021/js980072c
更新日期：1998-11-01 00:00:00
abstract：:In an attempt to explain the mechanism of protein stabilization conferred by detergents, we investigated the effect of Tween 80 on aggregation of bovine serum albumin (BSA) using circular dichroism (CD) and native gel electrophoresis. CD thermal scans showed that BSA denatures at about 54 degrees C in 20 mM Tris, pH 7...
journal_title：Journal of pharmaceutical sciences
pub_type： 杂志文章
doi：10.1002/(SICI)1520-6017(200005)89:5<646::AID-JPS10
更新日期：2000-05-01 00:00:00
abstract：:Many pathophysiological circumstances vary during 24 h periods. Many physiologic processes undergo biological rhythms, including the sleep-wake rhythm and metabolism. Disruptive effect in the 24 h variations can manifest as the emergence or exacerbation of pathological conditions. So, chronotherapeutics is gaining inc...
journal_title：Journal of pharmaceutical sciences
pub_type： 杂志文章,评审
doi：10.1002/jps.22656
更新日期：2011-09-01 00:00:00
abstract：:Protein immunogenicity is intensively researched by academics, biopharmaceutical companies, and authorities as it can compromise the safety and efficacy of a biopharmaceutical drug. So far, the exact protein aggregate properties inducing immune responses are not known. Possible protein-related factors could be size, c...
journal_title：Journal of pharmaceutical sciences
pub_type： 杂志文章
doi：10.1016/j.xphs.2018.07.022
更新日期：2018-11-01 00:00:00
abstract：:We present a systematic evaluation of the Wajima superpositioning method to estimate the human intravenous (i.v.) pharmacokinetic (PK) profile based on a set of 54 marketed drugs with diverse structure and range of physicochemical properties. We illustrate the use of average of "best methods" for the prediction of cle...
journal_title：Journal of pharmaceutical sciences
pub_type： 杂志文章
doi：10.1016/S0022-3549(15)00174-4
更新日期：2016-03-01 00:00:00
abstract：:Although acute renal failure (ARF) has been an area of extensive research in recent decades, our understanding of ARF is far from complete. Organic cations (OCs) are primarily excreted via vectorial transport by various renal organic cation transporters (OCTs). It is reasonable to assume that ARF may alter the express...
journal_title：Journal of pharmaceutical sciences
pub_type： 杂志文章
doi：10.1002/jps.21442
更新日期：2009-02-01 00:00:00
abstract：:Human skin samples are permeable to theophylline delivered from 1.5% solutions in various alkanecarboxylic acids and their mixtures. The respective permeability coefficients of theophylline, calculated from steady-state flux, correlate negatively with the permeability coefficients of the donor carboxylic acids and pos...
journal_title：Journal of pharmaceutical sciences
pub_type： 杂志文章
doi：10.1002/jps.2600761004
更新日期：1987-10-01 00:00:00
abstract：:In phenobarbital measurement by GLC with the flash-methylation technique, using trimethylanilinium hydroxide as a methylating reagent, a small amount of water decomposed phenobarbital and interfered with the quantitative analysis. Thus, both the sample and the methylating reagent must be sufficiently dehydrated to att...
journal_title：Journal of pharmaceutical sciences
pub_type： 杂志文章
doi：10.1002/jps.2600680938
更新日期：1979-09-01 00:00:00
abstract：:Aggregation of therapeutic monoclonal antibodies has a potential risk of immunogenicity, requiring minimization of aggregate formation. We have developed a fitting formula for antibody aggregation at 40°C based on physicochemical parameters, including colloidal and conformational stabilities. An IgG1 monoclonal antibo...
journal_title：Journal of pharmaceutical sciences
pub_type： 杂志文章
doi：10.1016/j.xphs.2019.10.038
更新日期：2020-01-01 00:00:00
abstract：:The single pass mean residence time in peripheral tissues, tp1, is a characteristic constant of linear pharmacokinetic systems and nonlinear systems with linear distribution kinetics. It is descriptive of distribution kinetics in such systems and is not dependent on elimination kinetics as are other related parameters...
journal_title：Journal of pharmaceutical sciences
pub_type： 杂志文章
doi：10.1002/jps.2600751202
更新日期：1986-12-01 00:00:00
abstract：:A hollow cylinder intravitreal implant was developed to achieve sustained release of protein to the retina for the treatment of retinal diseases. Hollow cylinders were fabricated by molding and cross-linking hyaluronic acid, the major component of the vitreous humor. Hollow cylinders were filled with a concentrated pr...
journal_title：Journal of pharmaceutical sciences
pub_type： 杂志文章
doi：10.1016/j.xphs.2018.04.024
更新日期：2018-09-01 00:00:00
abstract：:Ambrisentan is a nonsulfonamide, ET(A)-selective endothelin receptor antagonist (ERA) approved for the treatment of pulmonary arterial hypertension (PAH), and tadalafil is a phosphodiesterase type 5 (PDE-5) inhibitor under investigation for treatment of PAH. Due to the potential combination use, the pharmacokinetic (P...
journal_title：Journal of pharmaceutical sciences
pub_type： 杂志文章,随机对照试验
doi：10.1002/jps.21789
更新日期：2009-12-01 00:00:00
abstract：:Particulate matter present in drug products intended for parenteral administration to patients is typically monitored and controlled in the finished drug product to minimize potential risks to patients. In contrast to particulates found in drug products, the current study evaluated particulates representative of mater...
journal_title：Journal of pharmaceutical sciences
pub_type： 杂志文章
doi：10.1016/j.xphs.2019.02.020
更新日期：2019-07-01 00:00:00
abstract：:In this study, injectable microspheres were developed for the local treatment of joint degeneration in rheumatoid arthritis (RA). Microspheres loaded with triamcinolone (TA), a corticosteroid drug, and/or raloxifene (Ral), a cartilage regenerative drug, were prepared with a biodegradable and biocompatible polymer, pol...
journal_title：Journal of pharmaceutical sciences
pub_type： 杂志文章
doi：10.1002/jps.24058
更新日期：2014-08-01 00:00:00
abstract：:Oxidation of 7,8-dimethoxy-1,2,3,4-tetrahydroisoquinoline with potassium permanganate in acetone afforded 7,8-dimethoxy-3,4-dihydroisoquinoline as the primary product. Hence, oxidation of the appropriate secondary nonphenolic 7,8-dioxygenated tetrahydroisoquinoline alkaloid is thus a facile method for the generation o...
journal_title：Journal of pharmaceutical sciences
pub_type： 杂志文章
doi：10.1002/jps.2600731137
更新日期：1984-11-01 00:00:00
abstract：:Selected synthetic luteinizing hormone releasing hormone preparations were assayed, and their potencies were determined relative to one sample utilizing primary cultures of enzymatically dispersed rat anterior pituitary cells. Preliminary cell culture experiments indicated that luteinizing hormone releasing hormone ha...
journal_title：Journal of pharmaceutical sciences
pub_type： 杂志文章
doi：10.1002/jps.2600660319
更新日期：1977-03-01 00:00:00
abstract：:Currently, the EMEA, FDA, and WHO as regulatory authorities accept rapidly dissolving (>85% dissolved in 30 min) biopharmaceutics classification system (BCS) I drug products for biowaiver candidates. In the draft EMEA guideline the requirement has been set tighter, that is, the drug product should be very rapidly diss...
journal_title：Journal of pharmaceutical sciences
pub_type： 杂志文章
doi：10.1002/jps.21879
更新日期：2010-02-01 00:00:00
abstract：:Taraxacum mongolicum (TM), also known as dandelion, is a herb widely used in the East for its antibacterial activity. The high mineral content of TM presents a potential problem for the absorption of quinolone antibiotics. This study was undertaken to discern the significance of a drug-drug interaction between TM and ...
journal_title：Journal of pharmaceutical sciences
pub_type： 杂志文章
doi：10.1021/js980367q
更新日期：1999-06-01 00:00:00
abstract：:Conjunctiva occupies most of the ocular surface area, and conjunctival permeability affects ocular and systemic drug absorption of topical ocular medications. Therefore, the aim of this study was to obtain a computational in silico model for structure-based prediction of conjunctival drug permeability. This was done b...
journal_title：Journal of pharmaceutical sciences
pub_type： 杂志文章
doi：10.1016/j.xphs.2017.04.061
更新日期：2017-09-01 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
pub_type： 杂志文章
doi：10.1002/jps.2600721216
更新日期：1983-12-01 00:00:00
abstract：:Solid dispersion (SD) of indomethacin with crospovidone (CrosPVP) shows useful characteristics for preparation of dosage forms. This study aimed to determine the types of drugs that could adopt a stable amorphous form in SD. Twenty compounds with various melting points (70-218 degrees C), molecular weights (135-504) a...
journal_title：Journal of pharmaceutical sciences
pub_type： 杂志文章
doi：10.1002/jps.20794
更新日期：2007-06-01 00:00:00
abstract：:Metronidazole (MTZ) is a drug of choice for protozoal infections such as luminal amoebiasis. We designed and synthesized N-nicotinoyl-2-{2-(2-methyl-5-nitroimidazol-1-yl)ethyloxy}-D,L-glycine (NMG) as a colon-specific prodrug of MTZ. The synthetic yield of NMG was about 34%. The apparent partition coefficient of MTZ w...
journal_title：Journal of pharmaceutical sciences
pub_type： 杂志文章
doi：10.1002/jps.21720
更新日期：2009-11-01 00:00:00
abstract：:A commercial dispersive Raman spectrometer operating at 785 nm with a CCD detector was used to acquire spectra of USP reference materials inside amber USP vials. The laser and collection beams were directed through the bottom of the vials, resulting in a 60% loss of signal. The Raman shift was calibrated with a 4-acet...
journal_title：Journal of pharmaceutical sciences
pub_type： 杂志文章
doi：10.1021/js970330q
更新日期：1998-01-01 00:00:00
abstract：:Three aspirin derivatives, aspirin phenylalanine ethyl ester, aspirin phenylalanine amide, and aspirin phenyllactic ethyl ester, were investigated with respect to their hydrolysis by alpha-chymotrypsin. Of the three compounds, aspirin phenylalanine ethyl ester was the best substrate, with kcat = 25 sec-1 and Km = 1.3 ...
journal_title：Journal of pharmaceutical sciences
pub_type： 杂志文章
doi：10.1002/jps.2600701203
更新日期：1981-12-01 00:00:00
