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 ciprofloxacin. Two groups of Sprague Dawley rats (220-250 g) were employed; one received a single oral dose of ciprofloxacin (20 mg/kg) with concomitant oral administration of an aqueous TM extract (2 g crude drug/kg) while the control group received oral ciprofloxacin (20 mg/kg) only. Ciprofloxacin in plasma and urine, collected over 6 and 24 h, respectively, was determined by HPLC. Noncompartment analysis was employed for pharmacokinetic parameter estimation. Results indicated that, as compared to control, maximum plasma concentration (Cmax) of ciprofloxacin was significantly lowered by 73% in rats receiving concurrent TM dosing. Oral TM also caused a 3-fold increase in both apparent drug distribution volume (Vd,lambdaz/F: 92. 0 vs 30.8 L/kg) and terminal elimination half-life (t1/2,lambdaz; 5. 71 vs 1.96 h). Partly due to the changes in drug distribution and elimination, relative bioavailability of ciprofloxacin, as assessed by AUC0-->infinity, remained similar for both dosing groups. These findings suggest the possibility of a multifactorial drug-drug interaction between TM and ciprofloxacin. Thus, the implications of concomitant dosing of the two agents should not be overlooked.
journal_name
J Pharm Scijournal_title
Journal of pharmaceutical sciencesauthors
Zhu M,Wong PY,Li RCdoi
10.1021/js980367qsubject
Has Abstractpub_date
1999-06-01 00:00:00pages
632-4issue
6eissn
0022-3549issn
1520-6017pii
S0022-3549(15)50817-4journal_volume
88pub_type
杂志文章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::Approximately 30% of active pharmaceutical ingredients (APIs) experience agglomeration, granulation, and breakage during agitated drying. Currently, there is no small-scale bench tool to help assess and observe granulation behavior of APIs in the laboratory and subsequently lead to the development of a robust drying m...
journal_title:Journal of pharmaceutical sciences
pub_type: 杂志文章
doi:10.1002/jps.23762
更新日期:2014-01-01 00:00:00
abstract::The acidic, neutral, and alkaline degradations of six therapeutically useful cephalosporins (cephalothin, cephaloridine, cephaloglycin, cephalexin, cephradine, and cefazolin), 7-amino-cephalosporanic acid, 7-aminodeacetoxycephalosporanic acid, and some 7-substituted derivatives were followed by high-pressure liquid ch...
journal_title:Journal of pharmaceutical sciences
pub_type: 杂志文章
doi:10.1002/jps.2600651104
更新日期:1976-11-01 00:00:00
abstract::Gepirone hydrochloride, an investigational anxiolytic drug, was found to have at least three polymorphic forms which melted at 180 degrees C (I), 212 degrees C (II), and 200 degrees C (III). Thermal analytical studies showed that forms I and II were an enantiotropic pair, as were forms I and III. Form III was monotrop...
journal_title:Journal of pharmaceutical sciences
pub_type: 杂志文章
doi:10.1002/jps.2600741004
更新日期:1985-10-01 00:00:00
abstract::The purpose of this study was to elucidate the effect of heat treatment on the miscibility of multiple concentrated solutes that mimic biopharmaceutical formulations in frozen solutions. The first heating thermal analysis of frozen solutions containing either a low-molecular-weight saccharide (e.g., sucrose, trehalose...
journal_title:Journal of pharmaceutical sciences
pub_type: 杂志文章
doi:10.1002/jps.22706
更新日期:2011-12-01 00:00:00
abstract::The problem of optimizing ocular bioavailability of topically applied ophthalmic drugs is discussed. A formula for drug concentration in the tear film is derived using well-known pharmacokinetic relationships and a first-order drug decay model for the tear film. The time integral of the tear film concentration is then...
journal_title:Journal of pharmaceutical sciences
pub_type: 杂志文章
doi:10.1002/jps.2600800113
更新日期:1991-01-01 00:00:00
abstract::Although certain criteria have become recognized as being essential for a stable lyophilized formulation, the relative importance of different stability criteria has not been demonstrated quantitatively. This study uses multivariate statistical methods to determine the relative importance of certain formulation variab...
journal_title:Journal of pharmaceutical sciences
pub_type: 杂志文章
doi:10.1002/jps.20170
更新日期:2004-10-01 00:00:00
abstract::Role of water in chemical (in)stability is revisited, with focus on deamidation in freeze-dried amorphous proteins and peptides. Two distinct patterns for deamidation versus water have been reported, that is, a consistent increase in rate constant with water, and a "hockey stick"-type behavior. For the latter, deamida...
journal_title:Journal of pharmaceutical sciences
pub_type: 杂志文章
doi:10.1016/j.xphs.2017.09.003
更新日期:2018-01-01 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::Application of low-frequency ultrasound has been shown to enhance transdermal transport of drugs (low-frequency sonophoresis). In this paper, we show that the efficacy of low-frequency ultrasound in enhancing transdermal transport can be further increased by its combination with sodium lauryl sulfate (SLS), a well-kno...
journal_title:Journal of pharmaceutical sciences
pub_type: 杂志文章
doi:10.1002/1520-6017(200007)89:7<892::AID-JPS6>3.0.CO
更新日期:2000-07-01 00:00:00
abstract::Carbamazepine (CBZ) is a leading molecule in the management of epilepsy. Surveys have revealed that a sufficient lack of therapeutically efficient CBZ transbuccal formulation exists. Therefore, this investigation was directed toward designing multiparticulate composite construct (MCC) for the transbuccal delivery of C...
journal_title:Journal of pharmaceutical sciences
pub_type: 杂志文章
doi:10.1002/jps.23884
更新日期:2014-04-01 00:00:00
abstract::99mTc-N-(3-bromo-2,4,6-trimethylacetanilide)iminodiacetat e (I) and 99mTc-N-pyridoxyl-5-methyl-tryptophan (II) have been described as having optimal properties as hepatobiliary radiopharmaceuticals. This study compared specificity for hepatobiliary excretion, blood disappearance, rates of biliary appearance, and pharm...
journal_title:Journal of pharmaceutical sciences
pub_type: 杂志文章
doi:10.1002/jps.2600731259
更新日期:1984-12-01 00:00:00
abstract::Evidence is provided for the existence of a second discrete chemical form of meropenem at clinically relevant concentrations prepared from the marketed formulation of the drug. Proton and carbon-13 NMR spectra in D2O, coupled with tandem mass spectroscopy (MS/MS) and cross polarization/magic angle spinning (CP-MAS) NM...
journal_title:Journal of pharmaceutical sciences
pub_type: 杂志文章
doi:10.1021/js970370u
更新日期:1998-05-01 00:00:00
abstract::Previously available GLC methods for ethambutol may only be used to measure quantities of drugs much greater than those found in biological fluids such as plasma and dialysate. A previously published GLC method for plasma samples is extended to measure ethambutol in dialysate. A second GLC method, involving derivatiza...
journal_title:Journal of pharmaceutical sciences
pub_type: 杂志文章
doi:10.1002/jps.2600670407
更新日期:1978-04-01 00:00:00
abstract::The aim of this study was to characterize the in vitro hepatic uptake kinetics of sodium fluorescein (NaFluo) and identify the transporters involved. NaFluo exhibited saturable uptake kinetics in suspended rat and human hepatocytes as reflected by K(m) values of 22.5 and 14.1 µM, and V(max) values of 98.3 and 5.8 pmol...
journal_title:Journal of pharmaceutical sciences
pub_type: 杂志文章
doi:10.1002/jps.22694
更新日期:2011-11-01 00:00:00
abstract::The trichloroacetyl carbamates of 38 corticosteroids and chemically related compounds were prepared, and their NMR spectra in deuterochloroform were obtained. The effects of the introduction of a number of functional groups on the chemical shift of the carbamate proton signals were determined. ...
journal_title:Journal of pharmaceutical sciences
pub_type: 杂志文章
doi:10.1002/jps.2600650821
更新日期:1976-08-01 00:00:00
abstract::The delamination of glass contact surfaces because of hydrolytic instability has been well documented. However, the lack of glass surface integrity can also lead to other undesirable outcomes prior to visible glass delamination. This work shows how the early stages of delamination, namely, glass corrosion, can influen...
journal_title:Journal of pharmaceutical sciences
pub_type: 杂志文章
doi:10.1002/jps.24069
更新日期:2014-08-01 00:00:00
abstract::Controlling residual solvent levels is a major concern in pharmaceutical freeze-drying from co-solvent systems. This review provides an overview of the factors influencing this process and estimates their potential to reduce residual solvents in freeze-dried products. Decreased solvent contents are potentially correla...
journal_title:Journal of pharmaceutical sciences
pub_type: 杂志文章,评审
doi:10.1016/j.xphs.2018.04.001
更新日期:2018-08-01 00:00:00
abstract::Quantitative prediction of unbound drug fraction (fu) is essential for scaling pharmacokinetics through physiologically based approaches. However, few attempts have been made to evaluate the projection of fu values under pathological conditions. The primary objective of this study was to predict fu values (n = 105) of...
journal_title:Journal of pharmaceutical sciences
pub_type: 杂志文章
doi:10.1016/j.xphs.2018.02.021
更新日期:2018-07-01 00:00:00
abstract::In vitro studies on the photodecomposition of uric acid in the presence of the monosodium salt of riboflavin 5'-phosphate in buffers at various pH values, in methanol, and in human plasma are reported. The decomposition rate increased with increasing pH and was independent of solvent or buffer species. The mechanism a...
journal_title:Journal of pharmaceutical sciences
pub_type: 杂志文章
doi:10.1002/jps.2600661115
更新日期:1977-11-01 00:00:00
abstract::A modification of wet agglomeration technique is developed and demonstrated by agglomerative crystallization process for a nonapeptide (ABT-510) to improve processing of needle like crystals. Our procedure involves exploiting partial miscibility of the crystallization solvent system for in situ generation of a wetting...
journal_title:Journal of pharmaceutical sciences
pub_type: 杂志文章
doi:10.1002/jps.21063
更新日期:2008-03-01 00:00:00
abstract::Chlortetracycline was successfully separated from its degradation products and from other tetracyclines on a paper chromatogram previously impregnated with a mixture of edetate disodium and urea solution in pH 5.0 McIlvaine buffer. Chlortetracycline separation from its degradation products and from both tetracycline a...
journal_title:Journal of pharmaceutical sciences
pub_type: 杂志文章
doi:10.1002/jps.2600670432
更新日期:1978-04-01 00:00:00
abstract::The pharmaceutical industry has large investments in compound library enrichment, high throughput biological screening, and biopharmaceutical (ADME) screening. As the number of compounds submitted for in vitro ADME screens increases, data analysis, interpretation, and reporting will become rate limiting in providing A...
journal_title:Journal of pharmaceutical sciences
pub_type: 杂志文章
doi:10.1002/jps.20020
更新日期:2004-05-01 00:00:00
abstract::Detection and quantification of the amorphous phase of etoricoxib bulk drug substances, a selective cycloogenase-2 inhibitor used for the treatment of osteoarthritis, rheumatoid arthritis, and dental pain, was carried out using modulated differential scanning calorimetry (MDSC), dynamic mechanical analysis (DMA), and ...
journal_title:Journal of pharmaceutical sciences
pub_type: 杂志文章
doi:10.1002/jps.22774
更新日期:2012-02-01 00:00:00
abstract::3-N-(1',8'-Naphthalimido)propionic acid was synthesized and shown to effectively lower both serum cholesterol and triglyceride levels in rats and mice. In hyperlipidemic mice, serum lipid levels were lowered significantly, approaching normal levels of cholesterol and below normal levels of triglyceride. The serum lipi...
journal_title:Journal of pharmaceutical sciences
pub_type: 杂志文章
doi:10.1002/jps.2600730724
更新日期:1984-07-01 00:00:00
abstract::Dissolution profiles are classified in accordance with the shape of fractional dissolution rate function. This function is constant in time for the classical first-order model and, in this case, the dissolution is described by a monoexponential function. Therefore, any deviation of the fractional dissolution rate from...
journal_title:Journal of pharmaceutical sciences
pub_type: 杂志文章
doi:10.1002/jps.10419
更新日期:2003-08-01 00:00:00
abstract::Cyclosporin A (CyA) is a good candidate for incorporation in colloidal carriers such as nanoparticles (NP) that would diminish the adverse effects associated with its use under conventional pharmaceutical dosage forms and improve bioavailability after oral administration. In this study a composite rotational experimen...
journal_title:Journal of pharmaceutical sciences
pub_type: 杂志文章
doi:10.1021/js950164r
更新日期:1996-02-01 00:00:00
abstract::In this study, powder surface imaging was utilized in evaluation of particle size-related segregation behavior of granules during vibration and tableting processes. Altogether, eight granule batches were manufactured using a fluidized bed granulator. The particle size distribution of each batch was measured with sieve...
journal_title:Journal of pharmaceutical sciences
pub_type: 杂志文章
doi:10.1002/jps.23126
更新日期:2012-06-01 00:00:00
abstract::Continuing work on the interaction of inorganic additives with nonionic surfactants in aqueous solution dealt with their effect on the CMC and surface tension. The surfactants were octoxynol and polyoxyethylated oleyl alcohol, containing an average of 9.5 and 10 ethylene oxide units, respectively. Their CMC values wer...
journal_title:Journal of pharmaceutical sciences
pub_type: 杂志文章
doi:10.1002/jps.2600650706
更新日期:1976-07-01 00:00:00
abstract::Arginine-glycine-aspartate (RGD) has been shown to be essential for the recognition of integrins overexpressed in tumor cells, especially during tumor invasion, angiogenesis, and metasis. In this study, a novel tetrapeptide, RGD-valine (RGDV), was designed and attached to the N position of 1-β-D-arabinofuranosylcytosi...
journal_title:Journal of pharmaceutical sciences
pub_type: 杂志文章
doi:10.1002/jps.23326
更新日期:2012-12-01 00:00:00