Synthesis and Evaluation of Substituted Poly(organophosphazenes) as a Novel Nanocarrier System for Combined Antimalarial Therapy of Primaquine and Dihydroartemisinin.

Pharmaceutical Research
Sahil KumarT R Bhardwaj

Abstract

The synthesis and evaluation of novel biodegradable poly(organophosphazenes) (3-6) namely poly[bis-(2-propoxy)]phosphazene (3) poly[bis(4-acetamidophenoxy)]phosphazene (4)poly[bis(4-formylphenoxy)]phosphazene (5) poly[bis(4-ethoxycarbonylanilino)]phosphazene (6) bearing various hydrophilic and hydrophobic side groups for their application as nonocarrier system for antimalarial drug delivery is described. The characterization of polymers was carried out by IR, (1)H-NMR and (31)P-NMR. The molecular weights of these novel polyphosphazenes were determined using size exclusion chromatography with a Waters 515 HPLC Pump and a Waters 2414 refractive index detector. The degradation behavior was studied by 200 mg pellets of polymers in phosphate buffers pH 5.5, 6.8 and 7.4 at 37°C. The degradation process was monitored by changes of mass as function of time and surface morphology of polymer pellets. The developed combined drugs nanoparticles formulations were evaluated for antimalarial potential in P. berghei infected mice. These polymers exhibited hydrolytic degradability, which can afford applications to a variety of drug delivery systems. On the basis of these results, the synthesized polymers were employed as nanocarriers for target...Continue Reading

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Oct 15, 2014·European Journal of Pharmaceutical Sciences : Official Journal of the European Federation for Pharmaceutical Sciences·Sahil KumarT R Bhardwaj

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Feb 24, 2017·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Blessing Atim Aderibigbe

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