Issue 6, 2015

Biopharmaceutical profiling of sesamol: physiochemical characterization, gastrointestinal permeability and pharmacokinetic evaluation

Abstract

Sesamol has been studied extensively in the past two decades for its curative role in various diseases owing to its antioxidant potential. In vitro and in vivo pre-clinical studies indicate diverse role of sesamol in ailments connected by a common denominator of oxidative stress. These include antioxidant, anti-mutagenic, neuroprotective, hepatoprotective, cardioprotective, chemopreventive and anti-ageing properties. However, in depth investigation of its important characteristics including its oral pharmacokinetics is warranted, before evaluating this molecule for clinical application. The present study was undertaken to determine the physicochemical properties viz. solubility, log P, pKa and distribution coefficient of sesamol, coupled with its regional permeability through rat GIT. Single dose oral pharmacokinetic and tissue distribution studies of sesamol were also conducted in rats. The results indicate sesamol to be a molecule with appropriate aqueous solubility (∼38.8 mg mL−1) and log P (1.29); the pKa of sesamol was found to be 9.79 and it exhibited a distribution coefficient of >1. Sesamol was well absorbed throughout the GIT and showed an oral bioavailability of 95.61%. Sesamol is widely distributed in rat tissue with the highest concentration in the kidneys followed by lungs, brain, and liver. In spite of a favorable bioprofile, the wide distribution, small t1/2 and fast clearance of sesamol indicate a need for packaging it into a suitable delivery system.

Graphical abstract: Biopharmaceutical profiling of sesamol: physiochemical characterization, gastrointestinal permeability and pharmacokinetic evaluation

Article information

Article type
Paper
Submitted
22 Sep 2014
Accepted
02 Dec 2014
First published
15 Dec 2014

RSC Adv., 2015,5, 4083-4091

Author version available

Biopharmaceutical profiling of sesamol: physiochemical characterization, gastrointestinal permeability and pharmacokinetic evaluation

T. Geetha, N. Singh, P. K. Deol and I. P. Kaur, RSC Adv., 2015, 5, 4083 DOI: 10.1039/C4RA10926K

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