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Browsing Publicaciones by Subject "Biotecnología en Salud"

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    Comparison of different analytical methods to evaluate the heat shock protein (HSP) response in fruits
    (Elsevier, 2020) Polenta, Gustavo Alberto; Guidi, Silvina Mabel; Ambrosi, Vanina; Denoya, Gabriela Inés
    Heat shock proteins (HSP) are synthesized in living tissues exposed to transient increase in temperature and play a central role in the protective response against heat and other stresses. In fruits, this response to heat treatment provides resistance to a physiological alteration known as chilling injury. Despite the physiological importance ofthis group of proteins, publications comparing different methodological alternatives for their analysis are rather scarce. In the present paper, we conducted a comparative study using different electrophoretic and immunological techniques to evaluate the HSP response in fruits. Proteins were extracted from tomato fruit exposed to an HSPinducing temperature (38 C) for different times (0, 3, 20, and 27 h). Different alternatives of analysis (SDS-PAGE, SDS-PAGE followed by IEF, Western blot, and dot blot) were performed, and their potential application discussed. The study was complemented with a practical application, in which tomatoes were subjected to heat and anaerobic treatments and then stored in a chill inducing temperature. This application evidences the relevance of knowing the level of proteins attained by stress treatments which correlates with the acquired tolerance.
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    Paclitaxel and curcumin co-loaded mixed micelles
    (2021) Riedel, Jennifer Denise; Bernabeu, Ezequiel Adrián; Calabró López, María Valeria.; Calienni, María Natalia
    Vismodegib is a first-in-class inhibitor for advanced basal cell carcinoma treatment. Its dailyoral doses present a high distribution volume and several side effects. We evaluated its skin penetration loaded in diverse nanosystems as potential strategies to reduce side effects and drug quantities. Ultradeformable liposomes, ethosomes, colloidal liquid crystals, and dendrimers were able to transport Vismodegib to deep skin layers, while polymeric micelles failed at this. As lipidic systems were the most effective, we assessed the in vitro and in vivo toxicity of Vismodegib-loaded ultradeformable liposomes, apoptosis, and cellular uptake. Vismodegib emerges as a versatile drug that can be loaded in several delivery systems for topical application. These findings may be also useful for the consideration of topical delivery of other drugs with a low water solubility.