Chitosan-Based Formulations Intended as Protective Spray for Mask Surfaces in Prevention of Coronavirus Dissemination.

The extraordinary occurrence of COVID-19 by the fast expansion of viral infections has propelled particular interest in developing novel antiviral and virucidal agents to guarantee personal security. The main objective of this work is to propose novel formulations able to optimize the use of personal protection elements. In recent years, chitosan (CH) has attracted attention for being an interesting multifunctional, biodegradable, non-antigenic, non-toxic, and biocompatible natural polymer with antimicrobial properties.

Development and Characterization of Antimicrobial Textiles from Chitosan-Based Compounds: Possible Biomaterials Against SARS-CoV-2 Viruses.

Unlabelled: Novel antiviral cotton fabrics impregnated with different formulations based on Chitosan (CH), citric acid (CA), and Copper (Cu) were developed. CA was selected as a CH crosslinker agent and Cu salts as enhancers of the polymer antimicrobial activity. The characterization of the polymeric-inorganic formulations was assessed by using atomic absorption spectroscopy, X-ray diffraction, Fourier transform infrared and UV-Vis spectroscopy, as well as thermogravimetric analysis.

Protective effects of retinoid x receptors on retina pigment epithelium cells.

Age-related macular degeneration (AMD) is among the main pathologies leading to blindness in adults and has currently no cure or effective treatment. Selective apoptosis of retina pigment epithelial (RPE) cells results in the progressive loss of photoreceptor neurons, with the consequent gradual vision loss. Oxidative stress plays an important role in this process.