Articles about Silver Nano always make the headlines in particular when it claims to cure a multitude of diseases from Ebola to worms! The FDA has warnedcompanies and foundations (such as the Natural Solution Foundation) in the past about medical claims on commercial colloidal silver. In the meantime the research rages on. The latest research from the Max Planck Institute in Germany published in the Journal of Bioonanotechnology is the study: ‘Carbohydratefunctionalization of silver nanoparticles modulates cytotoxicity and cellularuptake’ Oxidative stress and toxicity was investigated in cultures of liver cells and tumour cells from the nervous system of mice using NP functionalised with 3 different monosaccharides. They observed that it is only when silver nanoparticles enter inside the cells that they produce serious harm, and that their toxicity is basically due to the oxidative stress they create. They find that carbohydrate coating on silver NP modulates both oxidative stress and cellular uptake- for example the toxicity of the Ag-NP were discovered to be greater when covered with glucose instead of galactose or mannose.
Nanodrones nonot these ones on kickstarter that can take a selfie or dronie of you but a biological ‘nanodrones’ have been researched for their ability to stop strokes! These ‘nanodrones’ are a type of FDA approved NP polymer loaded with anti-inflammatory peptides.They can be injected into the bloodstream where they find their way to the arterial plaque. It is also the first example of using targeted nanomedicine to reduce atherosclerosis in animals and could someday e used to treat those at high ricsk of stroke and heart attack.
The EU project PlasCarb was highlighted this week in The Guardians much tweeted and blogged about article - ‘Turing our mountains of food waste into graphene’ . PlasCarbs work/researches approaches to transform biogas generated by anaerobic digestion of food waste into high value graphitic carbon and renewable hydrogen.
This is a marine snail - Patella Vulgata (taken from http://news.sciencemag.org). This snail’s teeth were the subject of an article in the Journal of the Royal Society Interface. The teeth are made of a mixture of goethite nanofibers encased in a protein matrix giving this material tensile strength that is the highest recorded for a biological material. Micro images of the tooth can be seen in the article link above.