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Background: Several studies focused on the escalating prevalence of Problematic Use of Internet (PUI) and its consequential impact on mental health globally. This study investigates the relationship between PUI and associated psychological variables across different cultural contexts in Italy, Spain, Ecuador, and Peru. Method: A total of 675 participants, aged 18 to 54 (M = 22.73; SD = 4.05), completed measures assessing Internet addiction, social media addiction, Fear of Missing Out, Internet Gaming Disorder, and Phubbing. Results: Significant cultural variations were found, with Italian participants showing higher levels of Internet addiction but lower levels of social media addiction compared to other countries. Fear of Missing Out was higher in Italy, while the Italian sample exhibited lower Internet Gaming Disorder levels compared to Peru. As regards the communication disturbance caused by Phubbing, the Italian sample demonstrated significantly higher scores than the Peruvian sample. Linear regression analyses revealed distinct predictors for problematic Internet use in each country, emphasizing the importance of considering the cultural context in understanding this phenomenon. Conclusions: These findings contribute valuable insights into the interplay of cultural factors, psychological variables, and problematic Internet use, guiding future research and interventions. [ABSTRACT FROM AUTHOR]

Background: Young adults, aged between 17 and 25 years, experienced a strong impact on both their mental health and well-being due to COVID-19. Indeed, they were simultaneously faced with the normative tasks of their age and stressors associated with the long-lasting COVID-19 pandemic. This study offers further insights into the perceptions of the well-being (stress, anxiety, and depression) and social bonds in young Italian adults during and after the COVID-19 pandemic. Methods: The first survey was conducted between December and February 2021 (i.e., during the second wave in Italy) and included a total sample of 347 participants. The second survey took place between April and May 2022 (i.e., at the end of the health emergency in Italy) and consisted of a total sample of 313 participants. Results: T-tests, correlations, and linear regressions were performed. Overall, our findings showed an increased mood disturbance was positively correlated with having contracted COVID-19 and negatively associated with social connectedness. Furthermore, social assurance was found to negatively predict mood disorders during COVID-19. Conclusion: While numerous studies have focused on mental health, there has been limited exploration of protective factors, which could represent a different perspective that emphasizes individuals' resources rather than their vulnerabilities. [ABSTRACT FROM AUTHOR]

We studied the effect of the interaction of electromagnetic radiation with human keratinocytes (HaCaT), at low (50 Hz, 1 mT) frequency using both atomic force microscopy (AFM) and scanning near-field optical microscopy (SNOM) techniques. AFM analysis showed modifications in shape and morphology in exposed cells, while SNOM indirect immunofluorescence analysis revealed an increase of segregation of β4 integrin (an adhesion marker) in the cell membrane of the same cells, suggesting that a higher percentage of the exposed cells shows a modified pattern of this adhesion marker. [ABSTRACT FROM AUTHOR]