Polymer-based nanoparticles for oral insulin delivery: Revisited approaches

• Tipo: Outra Publicação em Revista Científica Internacional
• Data: 2015

Autores

Pedro Fonte (Autor) Outra; Francisca Araujo (Autor) Outra; Catia Silva (Autor) Outra; Carla Pereira (Autor) Outra; Salette Reis (Autor) FFUP; Helder A Santos (Autor) Outra; Bruno Sarmento (Autor) Outra

Revista

Título: Biotechnology Advances

Vol. 33

Páginas: 1342-1354

ISSN: 0734-9750

Editora: Elsevier

Indexação

ISI Web of Knowledge - 85 Citações

Scopus - 125 Citações

Classificação Científica

FOS: Ciências exactas e naturais > Ciências biológicas

Outras Informações

ID Authenticus: P-00G-33V

DOI: 10.1016/j.biotechadv.2015.02.010

Abstract (EN): Diabetes mellitus is a high prevalence and one of the most severe and lethal diseases in the world. Insulin is commonly used to treat diabetes in order to give patients a better life condition. However, due to bioavailability problems, the most common route of insulin administration is the subcutaneous route, which may present patients compliance problems to treatment. The oral administration is thus considered the most convenient alternative to deliver insulin, but it faces important challenges. The low stability of insulin in the gastrointestinal tract and low intestinal permeation, are problems to overcome. Therefore, the encapsulation of insulin into polymer-based nanoparticles is presented as a good strategy to improve insulin oral bioavailability. In the last years, different strategies and polymers have been used to encapsulate insulin and deliver it orally. Polymers with distinct properties from natural or synthetic sources have been used to achieve this aim, and among them may be found chitosan, dextran, alginate, poly(gamma-glutamic acid), hyaluronic acid, poly(lactic acid), poly(lactide-co-glycolic acid), polycaprolactone (PCL), acrylic polymers and polyallylamine. Promising studies have been developed and positive results were obtained, but there is not a polymeric-based nanoparticle system to deliver insulin orally available in the market yet. There is also a lack of long term toxicity studies about the safety of the developed carriers. Thus, the aims of this review are first to provide a deep understanding on the oral delivery of insulin and the possible routes for its uptake, and then to overview the evolution of this field in the last years of research of insulin-loaded polymer-based nanoparticles in the academic and industrial fields. Toxicity concerns of the discussed nanocarriers are also addressed.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 13