25 research outputs found
Legacy of the Housing Act of 1949: The Past, Present, and Future of Federal Housing and Urban Policy
Effect of Delivery Platforms Structure on the Epidermal Antigen Transport for Topical Vaccination
Transdermal immunization is highly attractive because of the skin's accessibility and unique immunological characteristics. However, it remains a relatively unexplored route of administration because of the great difficulty of transporting antigens past the outermost layer of skin, the stratum corneum. In this article, the abilities of three poly(N-vinylcaprolactam) (PVCL)-based thermoresponsive assemblies - PVCL hydrogels and nanogels plus novel film forming PVCL/acrylic nanogels - to act as protein delivery systems were investigated. Similar thermal responses were observed in all systems, with transition temperatures close to 32 °C, close to that of the skin surface. The investigated dermal delivery systems showed no evidence of cytotoxicity in human fibroblasts and were able to load and release ovalbumin (OVA), a well-studied antigen, in a temperature-dependent manner in vitro. The penetration of OVA into ex vivo human skin following topical application was evaluated, where enhanced skin delivery was seen for the OVA-loaded PVCL systems relative to administration of the protein alone. The distinct protein release and skin penetration profiles observed for the different PVCL assemblies were here discussed on the basis of their structural differences.Fil: Sonzogni, Ana SofĂa. Consejo Nacional de Investigaciones CientĂficas y TĂ©cnicas. Centro CientĂfico TecnolĂłgico Conicet - Santa Fe. Instituto de Desarrollo TecnolĂłgico para la Industria QuĂmica. Universidad Nacional del Litoral. Instituto de Desarrollo TecnolĂłgico para la Industria QuĂmica; ArgentinaFil: Yealland, Guy. Universidad Libre de Berlin; AlemaniaFil: Kar, Mrityunjoy. Universidad Libre de Berlin; AlemaniaFil: Wedepohl, Stefanie. Universidad Libre de Berlin; AlemaniaFil: Gugliotta, Luis Marcelino. Consejo Nacional de Investigaciones CientĂficas y TĂ©cnicas. Centro CientĂfico TecnolĂłgico Conicet - Santa Fe. Instituto de Desarrollo TecnolĂłgico para la Industria QuĂmica. Universidad Nacional del Litoral. Instituto de Desarrollo TecnolĂłgico para la Industria QuĂmica; ArgentinaFil: GonzĂĄlez, VerĂłnica Doris Guadalupe. Consejo Nacional de Investigaciones CientĂficas y TĂ©cnicas. Centro CientĂfico TecnolĂłgico Conicet - Santa Fe. Instituto de Desarrollo TecnolĂłgico para la Industria QuĂmica. Universidad Nacional del Litoral. Instituto de Desarrollo TecnolĂłgico para la Industria QuĂmica; ArgentinaFil: Hedtrich, Sarah. Universidad Libre de Berlin; AlemaniaFil: Calderon, Marcelo. Universidad Libre de Berlin; AlemaniaFil: Minari, Roque Javier. Consejo Nacional de Investigaciones CientĂficas y TĂ©cnicas. Centro CientĂfico TecnolĂłgico Conicet - Santa Fe. Instituto de Desarrollo TecnolĂłgico para la Industria QuĂmica. Universidad Nacional del Litoral. Instituto de Desarrollo TecnolĂłgico para la Industria QuĂmica; Argentin
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« Câest avec empressement que des dizaines dâanciens Ă©lĂšves, de collĂšgues et dâamis ont Ă©crit les textes dâhistoire quâon va lire en hommage Ă Pierre Guiral. (...) Le zĂšle des auteurs nous rappelle que lâoeuvre et lâinfluence du destinataire de lâhommage ont beaucoup contribuĂ© Ă former lâindispensable tissu provincial de lâenseignement et de la recherche universitaire. Un historien et un professeur qui a bien tenu sa place dans lâUniversitĂ© française, un « patron » et un ami qui a enrichi et aidĂ© ceux qui lâont approchĂ© et qui lâont su comprendre, tel est lâhomme que ces MĂ©langes vont honorer »