نتایج جستجو برای: biodegradable polymer

تعداد نتایج: 103158  

2009
Masahiro Funabashi Fumi Ninomiya Masao Kunioka

Biodegradabilities of polymers and their composites in a controlled compost were described. Polycaprolactone (PCL) and poly(lactic acid) (PLA) were employed as biodegradable polymers. Biodegradabilities of PCL and PLA samples in a controlled compost were measured using a Microbial Oxidative Degradation Analyzer (MODA) according to ISO 14855-2. Sample preparation method for biodegradation test a...

2017
Marziyeh Fathi Jaleh Barar

Introduction: Polymeric nanoparticles (NPs) formulated using biodegradable polymers offer great potential for development of de novo drug delivery systems (DDSs) capable of delivering a wide range of bioactive agents. They can be engineered as advanced multifunctional nanosystems (NSs) for simultaneous imaging and therapy known as theranostics or diapeutics. Methods: A brief prospective is prov...

Journal: :European journal of pharmaceutical sciences : official journal of the European Federation for Pharmaceutical Sciences 2011
Tomáš Etrych Jiří Strohalm Petr Chytil Peter Černoch Larisa Starovoytova Michal Pechar Karel Ulbrich

New biodegradable star polymer-doxorubicin (Dox) conjugates designed for passive tumor targeting were investigated and the present study described their synthesis, physico-chemical characterization, drug release and biodegradation. In the conjugates the core formed by poly(amido amine) (PAMAM) dendrimers was grafted with semitelechelic N-(2-hydroxypropyl)methacrylamide (HPMA) copolymers bearing...

Journal: :The Science of the total environment 2012
Christin Müller Kathy Townsend Jörg Matschullat

The persistence of marine debris such as discarded polymer bags has become globally an increasing hazard to marine life. To date, over 177 marine species have been recorded to ingest man-made polymers that cause life-threatening complications such as gut impaction and perforation. This study set out to test the decay characteristics of three common types of shopping bag polymers in sea turtle g...

Journal: :European cells & materials 2010
Nicole Y C Yu Aaron Schindeler Lauren Peacock Kathy Mikulec Paul A Baldock Andrew J Ruys David G Little

The effects of bone anabolic agents such as bone morphogenetic proteins (BMPs) have the potential to be augmented by co-treatment with an anti-catabolic such as a bisphosphonate. We hypothesised that the effects of bisphosphonates on BMP-induced bone anabolism would be dose dependent, and we aimed to test this in a small animal model. Agents were delivered locally using a biodegradable poly-D, ...

2016
Riyaz Sayyed

Biodegradable plastics has gained significant commercial interest in recent years as they are having similar properties to that of the synthetic plastic used now a days, they are completely bio-degradable, are produced from natural (microbial) sources and are biocompatible in human system. These properties make PHB as an ideal candidate for various applications in medical field. The present art...

Journal: :EuroIntervention : journal of EuroPCR in collaboration with the Working Group on Interventional Cardiology of the European Society of Cardiology 2012
Bo Xu Kefei Dou Yuejin Yang Shuzheng Lv Lefeng Wang Haichang Wang Zhanquan Li Lei Wang Yundai Chen Yong Huo Wei Li Ajay J Kirtane Runlin Gao

AIMS This study sought to evaluate the safety and efficacy of the NOYA stent which is a cobalt chromium-based sirolimus-eluting stent (SES) with DL-polylactide biodegradable polymer (Medfavour Medical, Beijing, China) in treating de novo coronary artery lesions. METHODS AND RESULTS The NOYA I trial was designed to compare the NOYA stent with the FIREBIRD2™ stent, a durable polymer SES widely ...

Journal: :International Journal of Nanomedicine 2008
Biswajit Mukherjee Kousik Santra Gurudutta Pattnaik Soma Ghosh

Controlled drug delivery technology of proteins/peptides from biodegradable nanoparticles has emerged as one of the eminent areas to overcome formulation associated problems of the macromolecules. The purpose of the present investigation was to develop protein-loaded nanoparticles using biodegradable polymer poly L-lactide-co-glycolidic acid (PLGA) with bovine serum albumin (BSA) as a model pro...

Journal: :Tissue engineering 2001
P X Ma J W Choi

Scaffolding plays pivotal role in tissue engineering. In this work, a novel processing technique has been developed to create three-dimensional biodegradable polymer scaffolds with well-controlled interconnected spherical pores. Paraffin spheres were fabricated with a dispersion method, and were bonded together through a heat treatment to form a three-dimensional assembly in a mold. Biodegradab...

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