Abstract：
:One of the major problems in end-stage bronchotracheal cancer is stenosis of the upper airways, either due to luminal ingrowth of the tumor or mucus plugging. Airway stents that suppress tumor ingrowth and sustain mucociliary transport can alleviate these problems in end-stage bronchial cancer. We evaluated different types of polymeric covers for a tissue engineered airway stent. The distinguishing feature of this stent concept is that respiratory epithelial cells can grow on the luminal surface of the stent which facilitates mucociliary clearance. To facilitate growth of epithelial cells at the air-liquid interface of the stent, we developed a polyurethane cover that allows transport of nutrients to the cells. Nonwoven polycarbonate urethane (PCU) covers were prepared by a spraying process and evaluated for their porosity and glucose permeability. Respiratory epithelial cells harvested from sheep trachea were cultured onto the selected PCU cover and remained viable at the air-liquid interface when cultured for 21days. Lastly, we evaluated the radial force of a PCU-covered nitinol stent, and showed the PCU covers did not adversely affect the mechanical properties of the stents for their intended application in the smaller bronchi. These in vitro data corroborate the design of a novel airway stent for palliative treatment of bronchotracheal stenosis by combination of stent-technology with tissue-engineered epithelial cells.
journal_name
Int J Pharmjournal_title
International journal of pharmaceuticsauthors
Chen W,Clauser J,Thiebes AL,McGrath DJ,McHugh PE,Steinseifer U,Jockenhoevel S,Hennink WE,Kok RJdoi
10.1016/j.ijpharm.2016.06.047subject
Has Abstractpub_date
2016-11-30 00:00:00pages
255-262issue
1eissn
0378-5173issn
1873-3476pii
S0378-5173(16)30523-3journal_volume
514pub_type
杂志文章abstract：:Econazole is a commonly used azole antifungal in clinical treatment of superficial fungal infections. It is generally used as conventional cream and gel preparations under the brand names of Spectazole (United States), Ecostatin (Canada), Pevaryl (Western Europe). Treatment efficiency of antifungal drugs depends on th...
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