Abstract：
:A micellar electrokinetic chromatographic (MEKC) method was developed for the quantification of lovastatin and simvastatin, cholesterol lowering agents in pharmaceutical dosage forms. Lovastatin and simvastatin were separated using an electrolyte system consisting of 12% acetonitrile (v/v) in 25 mM sodium borate buffer pH 9.3 containing 25 mM sodium dodecyl sulphate (SDS) with an extended light path capillary (48.5 cm x 50 microm i.d, 40 cm to detector). The method has been validated and proven to be rugged. Calibration curves were linear over the studied ranges with correlation coefficients greater than 0.996. A limit of detection of 3.2 microg/ml and a limit of quantitation of 10.6 microg/ml were estimated for both the drugs. The proposed method was found to be suitable and accurate for the determination of these drugs in commercial formulations.
journal_name
J Pharm Biomed Analjournal_title
Journal of pharmaceutical and biomedical analysisauthors
Srinivasu MK,Raju AN,Reddy GOdoi
10.1016/s0731-7085(02)00128-0subject
Has Abstractpub_date
2002-07-20 00:00:00pages
715-21issue
4eissn
0731-7085issn
1873-264Xpii
S0731708502001280journal_volume
29pub_type
杂志文章abstract：:In this work, a deep eutectic solvent (DES) composed of tetrabutylammonium bromide (TBABr) and acetic acid in a 1:2 M ratio was applied as the dispersive solvent for the dispersive liquid-liquid microextraction based on solidification of floating organic droplet (DLLME-SFO), using 1-decanol as extractant. Six preserva...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章
doi：10.1016/j.jpba.2021.113889
更新日期：2021-02-20 00:00:00
abstract：:A liquid chromatography-electrospray ionization-tandem mass spectrometry (LC-ESI-MS/MS) assay was developed and qualified for analyzing 4β-hydroxycholesterol and cholesterol in 5 μl of human and mouse plasma. Stable isotope-labeled d7-analogs of both analytes were used as internal standards and 4.2% (w/v) human serum ...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章
doi：10.1016/j.jpba.2013.07.016
更新日期：2013-11-01 00:00:00
abstract：:The anodic and cathodic behavior of nisoldipine, 3-isobutyl-5-methyl-1,4-dihydro-2,6-dimethyl-4-(2-nitrophenyl)pyridine-3 ,5-dicarboxylate, are reported. This drug belongs to the nitroaryl-1,4-dihydropyridine family, known as calcium channel antagonist and employed in therapeuticalls as peripheral and cerebral vasodil...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章
doi：10.1016/s0731-7085(97)00122-2
更新日期：1998-01-01 00:00:00
abstract：:A high performance liquid chromatographic method for the determination of phenylpropanolamine (PPA) in human plasma and rat's brain and blood microdialysates using fluorescence (FL) detection after precolumn derivatization with 4-(4,5-diphenyl-1H-imidazole-2-yl)benzoyl chloride (DIB-Cl) is described. PPA was extracted...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章
doi：10.1016/s0731-7085(03)00633-2
更新日期：2004-02-18 00:00:00
abstract：:In recent years, dietary supplements and herbal medicines are increasing in popularity all over the world. However, it is problematic that some manufacturers illegally included synthetic drugs in their products. Due to the extremely complex matrices of those products, most existing methods for screening illegal adulte...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章
doi：10.1016/j.jpba.2005.07.035
更新日期：2006-02-13 00:00:00
abstract：:Automated column-switching HPLC methods were developed and utilized for the direct analyses of three hydroxamic acid based metalloprotease inhibitors in rat plasma. These column-switching methods involved the use of a restricted-access media (RAM) precolumn and a column-switching valve, allowing the complete automatio...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章
doi：10.1016/s0731-7085(98)00127-7
更新日期：1999-03-01 00:00:00
abstract：:Hydroxycinnamic acids (HCAs) and hydroxybenzoic acids (HBAs) are antioxidant phytochemicals found in rice and effective for the prevention of human diseases including cancer. FBRA, which is a functional food manufactured by fermenting brown rice and rice bran with Aspergillus oryzae, has been demonstrated to have chem...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章
doi：10.1016/j.jpba.2017.04.035
更新日期：2017-08-05 00:00:00
abstract：:In a preliminary study pyroglutamate showed to be over 10 times increased in some lyophilised coffees with respect to brewed or filtered coffees, and probably that increase is related to some stage of the industrial process. Pyroglutamate is known to have a number of remarkable cognitive enhancing effects, which could...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章
doi：10.1016/j.jpba.2006.01.062
更新日期：2006-06-16 00:00:00
abstract：:The tridecapeptide afamelanotide (Scenesse®) is a congener of α-melanocyte stimulating hormone (α-MSH). Upon binding to the melanocortin 1 receptor (MC1R) on the surface of pigment cells of the skin, the melanocytes, α-MSH or afamelanotide trigger the synthesis of cAMP, which stimulates the synthesis of melanin and th...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章
doi：10.1016/j.jpba.2012.11.040
更新日期：2013-03-05 00:00:00
abstract：:An ion-pair reversed phase liquid chromatography-tandem mass spectrometry (LC-MS/MS) method has been developed for the quantification of a phosphorothioate oligonucleotide (PS-OGN) PF-ODN and its metabolites 5'N-1/3'N-1, 5'N-2 and 5'N-3 in rat plasma. Plasma samples were prepared with an initial phenol/dichloromethane...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章
doi：10.1016/j.jpba.2010.01.040
更新日期：2010-08-01 00:00:00
abstract：:Berberine (BBR), the principle component for many medicinal plants such as Coptis chinensis Franch., Phellodendron chinense Schneid., and Mahonia bealei (Fort.) Carr., possesses diverse pharmacological activities, including anti-bacterial, anti-inflammatory, antitumor, hypolipidemic and antidiabetic activities. In thi...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章
doi：10.1016/j.jpba.2017.02.038
更新日期：2017-05-30 00:00:00
abstract：:Growth media for mammalian cell culture are very complex mixtures of several dozens of ingredients, and thus the preparation of qualified media is critical to viable cell density and final product titers. For liquid media prepared from powdered ingredients, sterile filtration is required prior to use to safeguard the ...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章
doi：10.1016/j.jpba.2015.11.014
更新日期：2016-02-05 00:00:00
abstract：:Charge variant profiling of therapeutic proteins is required by the International Council for Harmonisation guidelines and is traditionally performed by capillary electrophoresis or ion exchange chromatography. Recently, improvements in the hyphenation of capillary electrophoresis with mass spectrometry and the introd...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章
doi：10.1016/j.jpba.2020.113218
更新日期：2020-06-05 00:00:00
abstract：:The extremely potent and selective nicotinic acetylcholine receptor antagonist methyllycaconitine, MLA, and related norditerpene alkaloids are finding increasing use as neurochemical probes and as targets for structure-activity relationship studies. In this work, an assay procedure for MLA which utilises ion suppressi...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章
doi：10.1016/0731-7085(95)01599-x
更新日期：1995-11-01 00:00:00
abstract：:A first-derivative spectrophotometric method, using a 'zero-crossing' technique of measurement has been used for determining clopamide-pindolol mixture in tablets. In the first-derivative mode the zero-crossing points of clopamide and pindolol occur at 272.6 and 262.4 nm, respectively. The relative ease offered by thi...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章
doi：10.1016/0731-7085(94)90024-8
更新日期：1994-02-01 00:00:00
abstract：:The objective of this work was to develop and validate a rapid reversed-phase (RP) high-performance liquid chromatography (HPLC) method for the in vitro pharmaceutical characterization of dapivirine-loaded polymeric nanoparticles. Chromatographic runs were performed on a RP C18 column with a mobile phase comprising ac...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章
doi：10.1016/j.jpba.2010.01.007
更新日期：2010-06-05 00:00:00
abstract：:Etimicin intermediate 3,2″,6″-N,N,N-triacetyl gentamicin C1a (P1), is a key intermediate of etimicin, which is a semi-synthetic aminoglycoside antibiotic effective to both gram-positive and gram-negative bacteria infections. Four major related impurities of P1 were detected by HPLC-ELSD and ESI-MS(n) methods. Weakly a...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章
doi：10.1016/j.jpba.2014.04.024
更新日期：2014-08-01 00:00:00
abstract：:Health Canada reported recently that medical devices containing di(2-ethylhexyl) phthalate (DEHP) should not be used in the clinical treatment of infants, young boys, pregnant women, and nursing mothers. The risk assessment of DEHP released from PVC medical devices is an important issue for hospitalized patients. In t...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章
doi：10.1016/s0731-7085(03)00019-0
更新日期：2003-04-10 00:00:00
abstract：:A reversed-phase HPLC method is reported for simultaneous quantitation of methylprednisolone (MP), MP succinate (MPS), and endogenous corticosterone (CST) in plasma of rats. Additionally, the 11-keto metabolite of MP (methylprednisone, MPN) is resolved from the other analytes. After addition of internal standard (tria...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章
doi：10.1016/s0731-7085(00)00253-3
更新日期：2000-07-01 00:00:00
abstract：:The present work describes the development and validation of rapid, sensitive and accurate liquid chromatography method, coupled with tandem mass spectrometry detection, for quantification of tranexamic acid in human plasma using isotopically labeled internal standard (IS). A one-step plasma protein precipitation was ...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章
doi：10.1016/j.jpba.2013.12.005
更新日期：2014-03-01 00:00:00
abstract：:The development of high performance liquid chromatography method on amylose-based stationary phases (Chiralpak AD) has permitted to achieve the preparative enantioseparation of one benzimidazole derivative, potent-AMP-kinase (AMPK) activator with satisfactory yields. Analytical enantioseparation method was optimized a...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章
doi：10.1016/j.jpba.2008.01.048
更新日期：2008-04-14 00:00:00
abstract：:The subject of the analysis of various elements, including metals and metalloids, in the pharmaceutical industry has seen increasing importance in the last 10-15 years, as modern analytical instrumentation has afforded analysts with the opportunity to provide element-specific, accurate and meaningful information relat...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章,评审
doi：10.1016/j.jpba.2010.11.030
更新日期：2011-06-25 00:00:00
abstract：:Ionic liquid-based salt-induced liquid-liquid extraction was developed for the first time and applied to the extraction of four active constituents, including polydatin, resveratrol, emodin, and physcion in Polygonum cuspidatum (P. cuspidatum). In this study, ionic liquid was used as extraction solvent. The dried P. c...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章
doi：10.1016/j.jpba.2018.09.050
更新日期：2019-01-30 00:00:00
abstract：:The clinical effect of glucosamine, the most widely used supplement in patients with osteoarthritis, on joint pain and function improvement, is reported to be inconsistent. Inter-patient variability in the pharmacokinetics of glucosamine, especially its oral absorption, could contribute to the inconsistent clinical ou...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章
doi：10.1016/j.jpba.2019.112954
更新日期：2020-01-30 00:00:00
abstract：:Mixed-mode chromatography (MMC) is a fast growing area in recent years, thanks to the new generation of mixed-mode stationary phases and better understanding of multimode interactions. MMC has superior applications in the separation of compounds that are not retained or not well resolved by typical reversed-phase LC m...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章,评审
doi：10.1016/j.jpba.2016.05.007
更新日期：2016-09-05 00:00:00
abstract：:A molecular imprinted polymer (MIP) was prepared to 7-hydroxycoumarin (7-OHC). A number of preparation parameters were examined by ultraviolet (UV) spectroscopy, including the amount of solvent used for reaction, equilibration time, selectivity and capacity of material. The polymer which showed the most selectivity fo...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章
doi：10.1016/s0731-7085(97)00043-5
更新日期：1997-10-01 00:00:00
abstract：:The measurement uncertainty (MU) related to analytical results can lead to false decisions in conformity assessment, such as accepting or rejecting incorrectly a medicine lot (consumer's and producer's risks, respectively). These risks can be global or specific. It is important to understand the different types of con...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章
doi：10.1016/j.jpba.2020.113203
更新日期：2020-05-30 00:00:00
abstract：:A near-infrared reflection spectroscopy (NIRS) method was developed to determine the total content of kavapyrones, kavain and water in dry extracts of Piper methysticum Forst. (kava kava, Piperaceae). Based on the recorded spectra and the reference data, performed by HPLC and Karl Fischer titration, a chemometrical an...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章
doi：10.1016/j.jpba.2004.06.030
更新日期：2004-11-19 00:00:00
abstract：:The binary phase diagram of (S)-(+)-4,4'-(1-methyl-1,2-ethandiyl)-bis-(2,6-piperazinedione), 1 (dexrazoxane), a cardioprotective agent, and of its (R)-(-)-enantiomer, 2, has been investigated by differential scanning calorimetry (DSC); the equimolecular mixture of 1 and 2 corresponds to a racemic compound (racemate) w...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章
doi：10.1016/0731-7085(92)80007-a
更新日期：1992-01-01 00:00:00
abstract：:The absolute majority of the HPLC applications use silica-based columns for the separation of active substance and its impurities. However, stationary phases based on metal oxides appear as an interesting alternative. The aim of our study was to investigate the potential utilization of metal oxide-based stationary pha...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章
doi：10.1016/j.jpba.2007.04.027
更新日期：2007-09-03 00:00:00
