2012 Vol. 2, No. 3

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2012, 02(3): 后插1-后插2,封3-封4.
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Abstract:
Simultaneous determination of pioglitazone and candesartan in human plasma by LC-MS/MS and its application to a human pharmacokinetic study
Vijaya Kumari Karra, Nageswara Rao Pilli, Jaswanth Kumar Inamadugu, J.V.L.N. Seshagiri Rao
2012, 02(3): 167-173. doi: 10.1016/j.jpha.2012.01.002
Abstract:
A simple and rapid liquid chromatography-tandem mass spectrometric (LC-MS/MS)assay method has been developed and fully validated for simultaneous quantification of pioglitazone and candesartan in human plasma.Irbesartan was used as an internal standard.The analytes were extracted from human plasma s...
Capture of cervical exfoliative cells on a glass slide coated by 3-glycidyloxypropyl trimethoxysilane and poly-L-lysine
Gao-Wa Xing, Sen Xiang, Wei Xue, Gao-Wa Aodeng, Yan Liu, Jing-Hua Zhang, Jin-Ming Lin
2012, 02(3): 174-179. doi: 10.1016/j.jpha.2012.02.008
Abstract:
A new modification method for glass slides was developed and applied to make ThinPrep Pap smears,in order to increase the adhesion ability of cervical exfoliative cells.3-glycidyloxypropyl trimethoxysilane (GOPS) was coated on the glass slides firstly on the slides,then poly-L-lysine (PLL)was covale...
Quantification of desloratadine in human plasma by LC-ESI-MS/MS and application to a pharmacokinetic study
Venkata Suresh Ponnuru, B.R. Challa, Ramarao Nadendla
2012, 02(3): 180-187. doi: 10.1016/j.jpha.2012.01.008
Abstract:
A simple,sensitive,and specific liquid chromatography tandem mass spectrometry (LC-MS/MS) method was developed for the quantification of desloratadine (DL) in human plasma using desloratadine-d5 (DLD5) as an internal standard (IS).Chromatographic separation was performed using an Xbridge C18 column ...
Preparation of gastro-resistant pellets containing chitosan microspheres for improvement of oral didanosine bioavailability
Patrícia Severino, George G.G. de Oliveira, Humberto G. Ferraz, Eliana B. Souto, Maria H.A. Santana
2012, 02(3): 188-192. doi: 10.1016/j.jpha.2012.02.005
Abstract:
The purpose of this work was to introduce a new concept of coated pellets containing chitosan microspheres loaded with didadosine for oral administration,aiming at reducing the frequency of administration and improving the bioavailability by a suitable release profile.Chitosan microspheres were prod...
Adsorptive stripping voltammetric methods for determination of aripiprazole
Derya A(s)angil, (I)brahim Hüdai Ta(s)demir, Esma K(i)l(i)(c)
2012, 02(3): 193-199. doi: 10.1016/j.jpha.2012.01.009
Abstract:
Anodic behavior of aripiprazole (ARP) was studied using electrochemical methods.Charge transfer,diffusion and surface coverage coefficients of adsorbed molecules and the number of electrons transferred in electrode mechanisms were calculated for quasi-reversible and adsorption-controlled electrochem...
Validated spectrofluorimetric method for the determination of atorvastatin in pharmaceutical preparations
Mohie M.K. Sharaf El-Din, Fathy M.M. Salama, Mohamed W.I. Nassar, Khalid A.M. Attia, Mohamed M.Y. Kaddah
2012, 02(3): 200-205. doi: 10.1016/j.jpha.2012.01.005
Abstract:
A rapid,sensitive and simple spectrofluorimetric method was developed for the estimation of atorvastatin.In this method,the native fluorescence characteristics of atorvastatin have been studied in both acidic and basic media.High sensitivity was obtained with 5% acetic acid at 389 nm using 276 nm fo...
High performance liquid chromatography mass spectrometric method for the simultaneous quantification of pravastatin and aspirin in human plasma:Pharmacokinetic application
Srinivasa Rao Polagani, Nageswara Rao Pilli, Venkateswarlu Gandu
2012, 02(3): 206-213. doi: 10.1016/j.jpha.2012.01.001
Abstract:
A rapid and sensitive liquid chromatography-tandem mass spectrometric (LC-MS/MS)assay method has been developed and fully validated for the simultaneous quantification of pravastatin and aspirin in human plasma.Furosemide was used as an internal standard.Analytes and the internal standard were extra...
Simple and sensitive determination of sparfloxacin in pharmaceuticals and biological samples by immunoassay
Hua-Jin Zeng, Ran Yang, Bing Liu, Li-Fang Lei, Jian-Jun Li, Ling-Bo Qu
2012, 02(3): 214-219. doi: 10.1016/j.jpha.2012.02.001
Abstract:
Plasma quinolone concentrations are not routinely measured in clinical practice.However,in order to optimize quinolone treatment,monitoring of plasma concentrations could sometimes be useful particularly in critically ill patients.In this study,anti-sparfloxacin antibody was obtained by immunizing r...
Analysis of species-dependent hydrolysis and protein binding of esmolol enantiomers
Yi-Hong Tang, Jun-Yan Wang, Hai-Hong Hu, Tong-Wei Yao, Su Zeng
2012, 02(3): 220-225. doi: 10.1016/j.jpha.2012.01.007
Abstract:
The stereoselective hydrolysis of esmolol in whole blood and in its separated components from rat,rabbit and human was investigated.Blood esterase activities were variable in different species in the order of rat > rabbit > human.Rat plasma showed the high esterase activity and had no stereose...
Validated gradient stability indicating HPLC method for determining Diltiazem Hydrochloride and related substances in bulk drug and novel tablet formulation
Vivekanand A. Chatpalliwara, Pawan K. Porwal, Neeraj Upmanyu
2012, 02(3): 226-237. doi: 10.1016/j.jpha.2012.01.003
Abstract:
A stability-indicating liquid chromatographic method has been developed and validated for the determination of Diltiazem Hydrochloride (DTZ) together with its six related substances (Diltiazem sulphoxide,Imp-A,Imp-B,Imp-D,Imp-E,and Imp-F) in a laboratory mixture as well as in a novel tablet formulat...
Simultaneous determination of oleanolic acid and ursolic acid by RP-HPLC in the leaves of Eriobotrya japonica Lindl.
Xiao-Hong Xu, Qing Su, Zhi-He Zang
2012, 02(3): 238-240. doi: 10.1016/j.jpha.2012.01.006
Abstract:
Oleanolic acid (OA) and ursolic acid (UA) are isomeric triterpenic acids and only one methyl's position is different between them.OA and UA always exist in the same plant,so it is difficult to separate them when determining contents by RP-HPLC.In this study,a very simple mobile phase for HPLC was de...