Carnation etched ring virus (CERV) ELISA Kit

Nowadays our society lives in a technological era that has led to a "technological sedentariness" resulting in a sedentary lifestyle in children that must be tackled by means of physical activity. This research study aims to analyse the link between physical activity and the use of video games. This is a descriptive, cross-sectional and relational research project. A sample made up of 142 students aged between 10 and 12 completed a self-made questionnaire which measured both their physical activity level and their CERV (Video Game Related Experiences Questionnaire). The results obtained through research show that most students do not have any problems concerning video games, and that the use of these can also help in the prevention of sedentary habits. These results have been indicated in the discussion section, contributing to the motivation of students' in relation to Physical Education, their compromise with the physical practice and the promotion of a long-lasting healthy lifestyle. As a conclusion, the need for using tools such as active video games in order to favour healthy lifestyles and also to prevent sedentary habits is demonstrated.

Repairing double-strand breaks (DSBs) is particularly challenging in heterochromatin, where the abundance of repeated sequences exacerbates the risk of ectopic recombination and chromosome rearrangements. In Drosophila cells, faithful homologous recombination (HR) repair of heterochromatic DSBs relies on a specialized pathway that relocalizes repair sites to the nuclear periphery before Rad51 recruitment. Here we show that HR progression is initially blocked inside the heterochromatin domain by SUMOylation and the coordinated activity of two distinct Nse2 SUMO E3 ligases: Quijote (Qjt) and Cervantes (Cerv). In addition, the SUMO-targeted ubiquitin ligase (STUbL) Dgrn, but not its partner dRad60, is recruited to heterochromatic DSBs at early stages of repair and mediates relocalization. However, Dgrn is not required to prevent Rad51 recruitment inside the heterochromatin domain, suggesting that the block to HR progression inside the domain and relocalization to the nuclear periphery are genetically separable pathways. Further, SUMOylation defects affect relocalization without blocking heterochromatin expansion, revealing that expansion is not required for relocalization. Finally, nuclear pores and inner nuclear membrane proteins (INMPs) anchor STUbL/RENi components and repair sites to the nuclear periphery, where repair continues. Together, these studies reveal a critical role of SUMOylation and nuclear architecture in the spatial and temporal regulation of heterochromatin repair and the protection of genome integrity.