A simplified and sensitive validated RP-HPLC method for determination of temozolomide in rat plasma and its application to a pharmacokinetic study

2018 ◽  
Vol 41 (10) ◽  
pp. 692-697 ◽  
Author(s):  
Archana Khosa ◽  
Kowthavarapu V. Krishna ◽  
Ranendra N. Saha ◽  
Sunil K. Dubey ◽  
Satish Reddi
2014 ◽  
Vol 2014 ◽  
pp. 1-9 ◽  
Author(s):  
Yu-Qiang Liu ◽  
Qian Cai ◽  
Chang Liu ◽  
Feng-Wei Bao ◽  
Zhen-Qiu Zhang

A simple and sensitive HPLC method was developed for simultaneous determination of danshensu (DSS), rosmarinic acid (RA), lithospermic acid (LA), salvianolic acid B (SAB), and hyperoside (HP) in rat plasma. This method validated was successfully applied to the pharmacokinetic study of the main active ingredients after oral administration ofRadix Salviae Miltiorrhizaeextract (SME), hawthorn extract (HTE), and a combination of both extracts (2.5 : 1) to rats. The results indicated that there have been great differences in pharmacokinetics between a single extract and a combination of both extracts. A combination of both extracts can enhance their bioavailabilities and delay the elimination of SAB and DSS in rats.


Bioanalysis ◽  
2020 ◽  
Vol 12 (9) ◽  
pp. 597-613
Author(s):  
Aml A Emam ◽  
Neven M Habib ◽  
Hamada M Mahmoud ◽  
Nada S Abdelwhab ◽  
Maha M Abdelrahman

Background: Olanzapine (OLZ) is one of most recommended drugs for the treatment of schizophrenia while metformin (MET) is the most commonly used hypoglycemic agent. Aim: Development and validation of two green, sensitive and accurate chromatographic methods for the simultaneous determination of OLZ along with the co-prescribed, MET. Materials & methods: TLC-densitometric method with a developing system consisting of methylene chloride:methanol:ethyl acetate:triethylamine (4:4:5:0.1, by volume) and a reversed-phase (RP)-HPLC method where the chromatographic separation was performed using ethanol:water mixture (50: 50, v/v) as a mobile phase. Results: TLC-densitometric method had linearity over concentration ranges of 160–4000 ng/band for OLZ and 150–4500 ng/band for MET, while RP-HPLC method was linear and validated over concentration range of 300–20000 ng/ml for OLZ and MET. Conclusion: Pharmacokinetic study was successfully performed and suggested the possibility of co-administration of MET with OLZ and their further formulation in one pharmaceutical preparation to enhance patient’s compliance.


2013 ◽  
Vol 27 (12) ◽  
pp. 1590-1594 ◽  
Author(s):  
Avinash Kumar ◽  
Vijay Kumar S ◽  
Sandip Gurav ◽  
Mohd Zainuddin ◽  
Purushottam Dewang ◽  
...  

2010 ◽  
Vol 25 (5) ◽  
pp. 542-546 ◽  
Author(s):  
Xiao-Li Song ◽  
Qing-Ying Zhang ◽  
Zhe-Ming Wang ◽  
Hong-Zheng Fu ◽  
Rui-Qin Qian

2016 ◽  
Vol 64 (11) ◽  
pp. 1582-1588 ◽  
Author(s):  
Ki Taek Kim ◽  
Jae-Young Lee ◽  
Ju-Hwan Park ◽  
Min Hwan Kim ◽  
Ji-Su Kim ◽  
...  

2015 ◽  
Vol 29 (10) ◽  
pp. 1559-1566 ◽  
Author(s):  
Beata Strach ◽  
Elżbieta Wyska ◽  
Krzysztof Pociecha ◽  
Anna Krupa ◽  
Renata Jachowicz

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