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December 8, 2018 10:00 am

Mice Given an Experimental Gene Therapy Don't Get Fat

AmiMoJo shares a report from Boing Boing: Researchers at Flinders University knocked out a gene known as RCAN1 in mice, hypothesizing that this would increase "non-shivering thermogenesis," which "expends calories as heat rather than storing them as fat" -- the mice were fed a high-calorie diet and did not gain weight. In particular, the modified mice did not store fat around their middles -- a phenomenon associated with many health risks, including cardiac problems -- and their resting muscles burned more calories. [Vice News reports:] The study's authors point out that there's a time and place for RCAN1's role in preventing calories from being burned: namely, back when food was scarce and calories weren't so readily available. In the modern world of "caloric abundance," however, too much fat is being stored and real health problems are ensuing as a result. The researchers suggest that "These adaptive avenues of energy expenditure [such as RCAN1] may now contribute to the growing epidemic of obesity." "We looked at a variety of different diets with various time spans from eight weeks up to six months," said Damien, "and in every case we saw health improvements in the absence of the RCAN1 gene. "Mice on a high-fat diet that lacked this gene gained no weight."

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