Novel Solid Dispersions Increasing the Solubility of Prothionamide

  • Ivan I. KrasnyukJrEmail author
  • Anastasiya V. Beliatskaya
  • Ivan I. Krasnyuk
  • Olga I. Stepanova
  • Irina V. Galkina
  • Sergey V. Lutsenko
  • Tatyana M. Litvinova


Water solubility of prothionamide and its solid dispersions with polyethylene glycol-1500, polyvinylpyrrolidone-10000, and β-cyclodextrin was studied. The most promising results were obtained with the solid dispersion with polyvinylpyrrolidone, which provided a 2.6-fold general increase of drug’s solubility and about a 6-fold dissolution rate increase, the maximal values among the studied drug forms. The results of complex physicochemical studies suggested that the improved drug release was due to micronization and solubilizing action of the polymer. A principal factor was the destruction of the crystal lattice and formation of amorphous particles in the solid dispersion. The obtained data can be useful for the development of modified pharmaceutical forms of prothionamide with improved drug release profile.


Prothionamide Solid dispersions Polyethyleneglycol-1500 (PEG) Polyvinylpyrrolidone-10000 (PVP) β-Cyclodextrin Solubility 



The work is performed according to the Russian Government Program of Competitive Growth of I.M. Sechenov First Moscow State University and Kazan Federal University.

Compliance with Ethical Standards

Conflict of Interest


Research Involving Humans and Animals Statement

Research were conducted “in vitro” without involving humans and animals.

Informed Consent


Funding Statement



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© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  • Ivan I. KrasnyukJr
    • 1
    Email author
  • Anastasiya V. Beliatskaya
    • 1
  • Ivan I. Krasnyuk
    • 1
  • Olga I. Stepanova
    • 1
  • Irina V. Galkina
    • 2
  • Sergey V. Lutsenko
    • 1
  • Tatyana M. Litvinova
    • 1
  1. 1.I.M. Sechenov First Moscow State Medical UniversityMoscowRussian Federation
  2. 2.Kazan Federal UniversityKazanRussian Federation

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