منابع مشابه
Promising polymers.
We have compared the effects of a and recombinant y interferons (IFNs) on the growth of human lung cancer cell lines in vitro. There was a diversity of response amongst the lines studied, the most sensitive being COR-L23 (a large cell anaplastic carcinoma line) and POC (a small cell line). In these two lines. IFN-y was found to be more potent than IFN-a. During cell growth of line POC in the pr...
متن کاملPsyllium: a promising polymer for sustained release formulations in combination with HPMC polymers.
Psyllium has a mucilaginous property that makes it a good candidate to be utilized as an excipient in the preparation of controlled release systems. Various formulations were prepared using theophylline as a model drug and investigated with a view to achieve an ideal slow drug release profile. The addition of hydroxypropyl methylcellulose (HPMC) to psyllium significantly reduced the burst relea...
متن کاملIonic Liquids and Hyperbranched Polymers – Promising New Classes of Selective Entrainers for Extractive Distillation
Ionic liquids (IL) and hyperbranched polymers (HyP) represent new classes of nonvolatile selective solvents. By measuring vapor-liquid equilibria (VLE) of azeotropic and close boiling systems in the presence of ionic liquids or hyperbranched polymers, separation factors are derived and the potential of using IL and HyP as entrainer for extractive distillation is discussed. Exemplarily, the supe...
متن کاملSynthesis of Thiolated Chitosans: Promising Polymers for Prolonged Mucoadhesive Drug Delivery
The successful development of multifunctional drug delivery systems is mainly based on the development and evaluation of new mucoadhesive polymers. Chitosan is a natural polycationic copolymer consisting of glucosamine and Nacetylglucosamine units. The polymer has valuable properties as a biomaterial because it is considered to be biocompatible, biodegradable and non-toxic. The derivatization o...
متن کاملElastin-like polypeptides as a promising family of genetically-engineered protein based polymers
Elastin-like polypeptides (ELP) are artificial, genetically encodable biopolymers, belonging to elastomeric proteins, which are widespread in a wide range of living organisms. They are composed of a repeating pentapeptide sequence Val-Pro-Gly-Xaa-Gly, where the guest residue (Xaa) can be any naturally occurring amino acid except proline. These polymers undergo reversible phase transition that c...
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ژورنال
عنوان ژورنال: Environmental Health Perspectives
سال: 1995
ISSN: 0091-6765
DOI: 10.2307/3432254