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沙發馬鈴薯(Couch potato是基因讓你變懶?

中時即時張嘉浩 20140216

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每天窩在沙發看電視的生活型態,會是一種基因作崇。(取材自英國《每日郵報》)

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The researchers said a gene mutation could explain why some people are less inclined to get off the couch and do some exercise.

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Scientists have discovered a genetic mutation which means some people - such as TV's famous couch potato Jim Royle - are lazier than others.

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Chemical cureThe researchers now believe they may be able to produce a pill to counter laziness.

 

懶得活動也是基因變異作祟?英國與中國研究團隊以老鼠做實驗,找到所謂的「沙發馬鈴薯基因」,還著眼研發藥劑來矯正。

Couch potatoYour GENES could be to blame - and there might soon be a pill to get you moving.

Genetic mutation which makes some people lazier than others discovered.

Newly-found found 'coach potato gene' has a crucial role in the brain, making some people less inclined to exercise.

Scientists now hope they may be able to produce a pill to counter laziness.

大腦分泌的神經傳導物質「多巴胺」與運動功能息息相關。蘇格蘭亞伯丁大學(University of Aberdeen)和中國科學院遺傳與發育生物研究所共同從事的研究發現,大鼠特定基因製造的蛋白質,在其腦部的多巴胺系統扮演重要角色,這個基因若發生變異,腦細胞表面刺激多巴胺分泌的受器就少得多,反而泰半沈陷在細胞裡,也就是說,神經訊號的傳送無法正常運作。

研究團隊說,以走動次數來看,特定基因變異的實驗鼠比正常鼠要少三分之二,步伐也較慢;之後,基因變異鼠會罹患與人類「新陳代謝症候群」(Metabolic syndrome)相似的病症,集高血脂、高血壓、高血糖等危險因子於一身,「像是典型的沙發馬鈴薯」。

但研究人員以藥物活化基因變異鼠的多巴胺受器後,情況就大幅改善,鼠隻變得比較活躍,體重也減輕。

研究小組並在中國大陸篩檢400名過胖的代謝症候群患者,發現其中兩例有同樣的基因變異。

研究團隊期望未來能大量篩檢代謝症候群患者,調查這種基因變異是否普遍,進而研發藥劑對治。

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