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Likes don't cheer you up

04.06.2017

Dr Martin Graff from the University of South Wales spoke about the results of his study of social media users. In short, "likes" in response to posts on social networks do not help to feel more confident and are not particularly encouraging, in the end. The results of the preliminary study were presented at the Annual Conference of the British Psychological Society in Brighton in May 2017.

A total of 340 participants were selected via Twitter and Facebook by completing questionnaires. They were also asked to say how much they agree or disagree with 25 statements about how people view ratings on social media. For example, "the attention I get from social media makes me feel good" or "I think someone is popular based on the number of likes they have."

The analysis showed that participants who said they made extraordinary efforts to get more "likes" (such as asking for it or paying for it) were more likely to have low self-esteem and be less gullible. The same can be said for those who admitted to deleting messages or changing their profile picture based on the number of positive ratings.

"The proliferation of social media use has led to a general concern about their impact on our mental health," said Dr. Graff. "While this is only a relatively small study, the results show that how we interact with social media can influence how we how we feel - and our feelings are not always positive."

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Using electrical impulses, the "tweezers" can extract individual DNA, proteins and organelles from living cells without destroying them. Scientists from Imperial College London worked on the development. Their research could help scientists create an "atlas of human cells" and provide new insights into how healthy cells function and what happens in diseased cells.

Scientists are constantly expanding their knowledge of how cells function, but there are still unanswered questions. This is especially true for individual cells of the same type, such as brain cells, muscle cells or fat cells, which are still very different from each other in composition at the molecular level. Compiling an "atlas" or "catalogue" of seemingly identical cell diversity could help researchers better understand fundamental cellular processes and develop improved disease models and even new therapeutic methods for patients.

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The method is based on a phenomenon called dielectrophoresis. The tweezers generate a high enough electric field to capture and extract small amounts of cells, such as DNA or transcription factors, molecules that can alter the activity of genes.

In the future, the new tool can be used in experiments with nerve cells, which are currently impossible. By adding or removing mitochondria from individual cells using "nano-tweezers", researchers can better understand the role of these organelles, especially in neurodegenerative diseases.

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