miR-23a-3p causes cellular senescence by targeting hyaluronan synthase 2: possible implication for skin aging.

Even though aging and cellular senescence appear to be linked, the biological mechanisms interconnecting these two processes remain to be unravelled. Therefore, microRNA (miRNA/miR) profiles were analyzed ex vivo by means of gene array in fibroblasts isolated from young and old human donors. Expression of several miRNAs was positively correlated with donor age.

[Eating disorders on the internet: an experimental study on the effects of pro-eating disorders websites and self-help websites].

Pro-eating disorders (ED) websites are assumed to have a negative impact on internet users because these sites promote ED as a lifestyle, and present an extreme thin ideal as well as extreme weight loss measures. We tested the impact of reading pro-ED contents in a sample of 421 women. The participants were randomly assigned to one of 3 conditions in which they were exposed to either a pro-ED blog, a self-help blog, or a neutral control blog.