Biodegradable polymer microparticles with entraped herbal extracts: preparation with supercritical carbon dioxide and use for tissue repair

Markvicheva E.A.1 , Antonov E.N.2, Popova A.V.2, Bogorodsky S.E.2, Likhareva V.V.1, Feldman B.M.3, Strukova S.M.3, Popov V.K.2, Rumsh L.D.1

1. Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences
2. Institute of Laser and Information Technologies, Russian Academy of Sciences
3. Federal State Unitary Enterprise "State Scientific Center "NIOPIK"
Section: Experimental/Clinical Study
UDK: 577.151.45      PubMed Id: 20000125
Year: 2009  Volume: 55  Issue: 4  Pages: 479-488
Biodegradable microparticles based on poly-D,L-lactide with entrapped mixture of herbal water-soluble extracts of Plantago major and Calendula officinalis were prepared. For preparation of these microparticles the previously developed method based on the usage of supercritical carbon dioxide (SC-CO2) was proposed. Microparticles were obtained by two techniques: 1) by preparing porous polymer monolith containing entrapped mixture of herbal extracts, which was then reduced to fine microparticles (ca. 0.1 mm) by dry ice grinding (called here as "monolithisation technique") and 2) by spraying of this polymer/extracts mixture through a jet (spray technique).In vitro release kinetic profile of herbal extract mixture was found to depend on the microparticle preparation technique, on the microparticle structure as well as on the initial ratio polymer/extracts (w/w). The microparticles were used for gastric ulcer treatment in a rat model. The extracts released from microparticles were found to accelerate tissue repair.
Download PDF:

Markvicheva E.A., Antonov E.N., Popova A.V., Bogorodsky S.E., Likhareva V.V., Feldman B.M., Strukova S.M., Popov V.K., Rumsh L.D. (2009) Biomeditsinskaya khimiya, 55(4), 479-488.
 2019 (vol 65)
 2018 (vol 64)
 2017 (vol 63)
 2016 (vol 62)
 2015 (vol 61)
 2014 (vol 60)
 2013 (vol 59)
 2012 (vol 58)
 2011 (vol 57)
 2010 (vol 56)
 2009 (vol 55)
 2008 (vol 54)
 2007 (vol 53)
 2006 (vol 52)
 2005 (vol 51)
 2004 (vol 50)
 2003 (vol 49)

© Institute of Biomedical Chemistry, Moscow, Russia