Silk derived fibroin membranes for biomedical use. I. Preparation and physico-mechanical properties

scaffold di fibrina potrebbero avere applicazioni clinich

Preoperative and intraoperative staging in gastric cancer.

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[The therapy of symptomatic and/or complicated dysontogenetic liver cysts].

Congenital hepatic cysts are a frequent disease, symptomatic in the 16-18\% of the cases. The authors report a review of the literature of the last 20 years about 135 treated surgically patients with symptomatic and/or complicated hepatic cysts. They analyse the different models of treatment both surgical and conservative, referring in special way about the alcoholization of the cysts. The authors finally report their personal experience about eight cases

Cyclophosphazenes as versatile substrates in polymer chemistry

In this article we present the synthesis of new cyclophosphazenes and their use as chain extenders, polymers compatibilizers, and monomers

Preparation and characterisation of a new double-sided bio-artificial material prepared by casting of poly(vinyl alcohol) on collagen

A new double-sided bio-artificial polymer material prepared by casting of poly(vinyl alcohol) (PVA) on collagen (COLL) was obtained. The single components were blended with lactic acid and glutaraldehyde as plasticiser and crosslinker agents, respectively, to change and characterise structure of both the polymers. Differential scanning calorimetry, dynamic mechanical analysis, tensile test, tear resistance test, scratch test and Fourier transform infrared spectroscopy were chosen to characterise all the prepared materials. The results showed that the additives led to the decrease of glass transition temperature, melting temperature and crystallinity with respect to raw materials. The new bio-artificial material revealed tough behaviour with yield stress, with less by half tensile strength compared to neat materials and with the strain of PVA (> 100 %). Both PVA and COLL blends and the new bio-artificial material exhibited viscoelastic features useful for being used in contact with living organism