Scientists "print" new eye cells
Researchers have discovered a way to successfully print new eye cells that could ber used to treat sight loss in people with damaged retinas, according to a study published in Biofabrication. The study used animal cells, and more tests are needed before human trials can begin.
the scientists were able to use a printer to create two types of cells from the retina of adult rates – ganglion and glial cells. These cells transmit information from the eye to certain parts of the brain and help protect neurons. The printed cells remained healthy and were able to survive and grow in culture.
The loss of nerve cells in the retina is the source of blindness in many eye diseases, and researchers say their aim is to develop this technology to repair damaged retinas in the future. The next step is attempting to print other types of retinal cells, including rod and cones – the light-sensitive photoreceptors.
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Sourced from: BBC, Scientists ‘print’ new eye cells
Published On: Dec 19th 2013
Brains hardwired to accept celebrities' health advice
People are more willing to trust celebrity health advice, even though they often tout dubious medical information, because our brain forces us to do so, according to a study published in BMJ. Researchers say it’s more than just cultural norms.
The scientists reviewed more than 200 years of data, and found that there are deeply-rooted biological, psychological and social forces at play that make celebrity health advice influential. These psychological effects include classical conditioning, self-conception, cognitive dissonance, the halo effect and herd behavior.
For example, the halo effect allows the brain to confuse success in other fields, such as modeling or acting, with success in all fields, such as medical advocacy. Classical conditioning applies the positive responses we tend to have towards celebrities towards whatever the celebrity is pushing. Self-conception assumes the positive traits celebrities have can also be attributed to their cause, and herd behavior helps celebrities trigger a person’s natural tendency to act as others in similar situations. Cognitive dissonance allows us to unconsciously rationalize celebrity medical advice to reduce our psychological discomfort because we would otherwise not agree with their view.
The researchers said celebrity advice is often taken out of context, that it typically ignores risks and is influenced by their own financial interests. They noted that medical professionals should be aware of what celebrities are saying so they can counter their advice with accurate medical information.
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Sourced from: livescience, Brains Hardwired to Accept Celebrity Health Advice
Published On: Dec 19th 2013