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Pubmed ID :29454264
Publication Date : //

Development and validation of UPLC-MS/MS assay for quantification of cladrin: Absolute bioavailability and dose proportionality study in rats.


Cladrin, an isoflavone is a major bioactive constituent found in stem bark of Butea monosperma with remarkable osteogenic activity. A speedy and sensitive UPLC coupled tandem mass spectrometry (UPLC-MS/MS) method was developed, validated and successfully applied to bioavailability, blood partitioning, plasma protein binding, intravenous and multiple-dose oral pharmacokinetics of cladrin in rats. Separation was done on C18 column (5.0 μm, 4.6 × 50 mm) using mobile phase containing acetonitrile and 0.10% formic acid in the ratio of 65:35 (v/v) with 0.60 mL/min flow rate. The method was highly sensitive and has a short run time of 2.50 min with an excellent linearity (R > 0.99) in the range of 0.20-200 μg/L. Absolute bioavailability was found to be 16.58, 19.04 and 6.76% at oral doses of 5, 10, and 20 mg/Kg, respectively. Cladrin was rapidly absorbed (T 3.0 h) with a high apparent volume of distribution (15.03 ± 1.79L/Kg), high clearance (2.27 ± 0.30L/h/Kg) and high plasma protein binding. The present study is a first comprehensive in-vitro as well as the in-vivo preclinical pharmacokinetic report of cladrin giving insights about its drug-likeness and further development as a potential therapeutic agent.

Authors : Rashid Mamunur , Singh Sandeep K , Malik Mohd Yaseen , Jahan Sadaf , Chaturvedi Swati , Taneja Isha , Raju Kanumuri Sivarama , Naseem Zaiba , Gayen J R , Wahajuddin Muhammad ,

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