Impact of Dwell Time of Retrievable IVC Filters on IVC Lumen Diameter: A Series of 36 Cases.

Background: Inferior vena cava (IVC) filters are effective in preventing pulmonary embolism in patients at risk. This study aimed to investigate whether the dwell time of retrievable IVC filters have impact on IVC lumen diameter.

Methods: The clinical data of 36 patients treated with retrievable IVC filters from January 2016 to November 2018 were retrospectively collected.

Codelivery of paclitaxel and small interfering RNA by octadecyl quaternized carboxymethyl chitosan-modified cationic liposome for combined cancer therapy.

Conventional therapeutic approaches for cancer are limited by cancer cell resistance, which has impeded their clinical applications. The main goal of this work was to investigate the combined antitumor effect of paclitaxel with small interfering RNA modified by cationic liposome formed from modified octadecyl quaternized carboxymethyl chitosan. The cationic liposome was composed of 3β-[N-(N', N'-dimethylaminoethane)-carbamoyl]-cholesterol, dioleoylphosphatidylethanolamine, and octadecyl quaternized carboxymethyl chitosan.

Preparation of Chitosan-Based Hemostatic Sponges by Supercritical Fluid Technology.

Using ammonium bicarbonate (AB) particles as a porogen, chitosan (CS)-based hemostatic porous sponges were prepared in supercritical carbon dioxide due to its low viscosity, small surface tension, and good compatibility with organic solvent. Fourier transform infrared spectroscopy (FTIR) spectra demonstrated that the chemical compositions of CS and poly-(methyl vinyl ether-co-maleic anhydride) (PVM/MA) were not altered during the phase inversion process. The morphology and structure of the sponge after the supercritical fluid (SCF) process were observed by scanning electron microscopy (SEM).