News Column

Researchers from Chongqing University Report Recent Findings in Antimicrobials

June 18, 2014

By a News Reporter-Staff News Editor at Biotech Week -- Current study results on Drugs and Therapies have been published. According to news reporting from Chongqing, People's Republic of China, by NewsRx journalists, research stated, "A targeted oral drug delivery system is useful to improve the treatment of gastrointestinal diseases. A high density sinking dosage form can sink to the bottom of the stomach near the pylori sections to enhance gastric retention."

The news correspondents obtained a quote from the research from Chongqing University, "However, it is difficult to achieve a high density sinking system using the traditional technology. In the current study, novel stomach-specific sinking magnetic microparticles (SMMPs) were prepared via the monoaxial electrospray method for enhanced gastric antimicrobial delivery. The size of SMMPs was approximately 5 mu m, and the Fe3O4 nanoparticles were observed in the SMMPs by transmission electron microscopy (TEM). The density of SMMPs increased as the concentration of Fe3O4 nanoparticles in the electrospray inlet flow increased, with the maximum true density of approximately 3.52 g/cm(3). The SMMPs displayed strong magnetism in vitro and in vivo. They can settle down in water within 120 s in vitro, and the settling time decreased to 20 s under a magnetic field. Furthermore, an in vivo gamma scintigraphy study demonstrated that I-131 labeled SMMPs were retained in the stomach for over 8 h, and an external permanent magnet can increase their gastric retention time even further. Using Helicobacter pylori as a model bacterium, amoxicillin-loaded SMMPs exhibited a significantly greater eradication of H. pylon compared to the free drug, in vivo. Our results suggested that electrospray is an effective technique to prepare the high density gastroretentive dosage forms."

According to the news reporters, the research concluded: "We have shown that stomach-specific SMMPs can supply better treatment for H. pylori infections and have the potential to be used in clinical practice."

For more information on this research see: Sinking-Magnetic Microparticles Prepared by the Electrospray Method for Enhanced Gastric Antimicrobial Delivery. Molecular Pharmaceutics, 2014;11(5):1640-1650. Molecular Pharmaceutics can be contacted at: Amer Chemical Soc, 1155 16TH St, NW, Washington, DC 20036, USA. (American Chemical Society -; Molecular Pharmaceutics -

Our news journalists report that additional information may be obtained by contacting S.L. Hao, Chongqing Univ, Key Lab Biorheol Sci & Technol, Minist Educ, Coll Bioengn, Chongqing 400030, People's Republic of China. Additional authors for this research include Y.Z. Wang and B.C. Wang (see also Drugs and Therapies).

Keywords for this news article include: Asia, Antimicrobials, Chongqing, Nanoparticle, Nanotechnology, Drugs and Therapies, Emerging Technologies, People's Republic of China

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC

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Source: Biotech Week

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