AIM: Develop nanoparticulate agents for oral targeted delivery of dexamethasone (Dex) to macrophages of inflamed mucosa. MATERIALS & METHODS: Solid archaeolipid nanoparticles (SAN-Dex) (compritol/Halorubrum tebenquichense polar archaeolipids/soybean phosphatidylcholine/Tween-80 4; 0.9; 0.3; 3% w/w) loaded with Dex were prepared. Their mucopenetration, stability under digestion and in vitro anti-inflammatory activity, were determined. RESULTS: Ultra-small SAN-Dex strongly reduced the levels of TNF-α, IL-6 and IL-12 on J774A1 cells stimulated with lipopolysaccharides as compared with free Dex or loaded in ordinary solid lipid nanoparticles-Dex. After in vitro digestion, the anti-inflammatory activity of SAN-Dex was retained, while that of solid lipid nanoparticles-Dex was lost. CONCLUSION: Because of their structural and pharmacodynamic features, SAN-Dex may be suitable for oral targeted delivery to inflamed mucosa.
AIM: Develop nanoparticulate agents for oral targeted delivery of dexamethasone (Dex) to macrophages of inflamed mucosa. MATERIALS & METHODS: Solid archaeolipid nanoparticles (SAN-Dex) (compritol/Halorubrum tebenquichense polar archaeolipids/soybeanphosphatidylcholine/Tween-80 4; 0.9; 0.3; 3% w/w) loaded with Dex were prepared. Their mucopenetration, stability under digestion and in vitro anti-inflammatory activity, were determined. RESULTS: Ultra-small SAN-Dex strongly reduced the levels of TNF-α, IL-6 and IL-12 on J774A1 cells stimulated with lipopolysaccharides as compared with free Dex or loaded in ordinary solid lipid nanoparticles-Dex. After in vitro digestion, the anti-inflammatory activity of SAN-Dex was retained, while that of solid lipid nanoparticles-Dex was lost. CONCLUSION: Because of their structural and pharmacodynamic features, SAN-Dex may be suitable for oral targeted delivery to inflamed mucosa.
Authors: Federico Leonel Parra; Ayelen Tatiana Caimi; Maria Julia Altube; Diego Esteban Cargnelutti; Mónica Elba Vermeulen; Marcelo Alexandre de Farias; Rodrigo Villares Portugal; Maria Jose Morilla; Eder Lilia Romero Journal: Front Bioeng Biotechnol Date: 2018-11-06
Authors: Adrian H Teruel; Isabel Gonzalez-Alvarez; Marival Bermejo; Virginia Merino; Maria Dolores Marcos; Felix Sancenon; Marta Gonzalez-Alvarez; Ramon Martinez-Mañez Journal: Int J Mol Sci Date: 2020-09-05 Impact factor: 5.923