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Mutated gene provides superior resilience to cold says study -- Science & Technology -- Sott.net


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Almost one in five people lacks the protein α-actinin-3 in their muscle fibre. Researchers at Karolinska Institutet now show that more of the skeletal muscle of these individuals comprises slow-twitch muscle fibres, which are more durable and energy-efficient and provide better tolerance to low temperatures than fast-twitch muscle fibres. The results are published in
The American Journal of Human Genetics.
Skeletal muscle comprises fast-twitch (white) fibres that fatigue quickly and slow-twitch (red) fibres that are more resistant to fatigue. The protein α-actinin-3, which is found only in fast-twitch fibres, is absent in almost 20 per cent of people - almost 1.5 billion individuals - due to a mutation in the gene that codes for it. In evolutionary terms, the presence of the mutated gene increased when humans migrated from Africa to the colder climates of central and northern Europe. ....

United States , Karolinska Institutet , Volker Lauschke , Australia National Health , Swedish Society For Medical Research , Department Of Physiology , Lithuanian Sports University In Kaunas , Lung Foundation , Swedish Research Council , Swedish National Centre For Research , Research Council Of Lithuania , University Of Melbourne , Research Council , Cold Adaptation , American Journal , Mats Rundgren , Lithuanian Sports University , Swedish National Centre , Swedish Society , Medical Research , Jeansson Foundations , Swedish Heart , National Health , Co Author Volker Lauschke , ஒன்றுபட்டது மாநிலங்களில் , வோல்கர் லௌஸ்ச்கே ,

Ideas, Inventions And Innovations : Fast Twitch, Slow Twitch; 1 in 5 People Have Mutant Gene To Better Tolerate Cold Temperatures


Ideas, Inventions And Innovations
Fast Twitch, Slow Twitch; 1 in 5 People Have Mutant Gene To Better Tolerate Cold Temperatures
Almost one in five people lacks the protein α-actinin-3 in their muscle fibre. Researchers at Karolinska Institutet now show that more of the skeletal muscle of these individuals comprises slow-twitch muscle fibres, which are more durable and energy-efficient and provide better tolerance to low temperatures than fast-twitch muscle fibres. The results are published in The American Journal of Human Genetics.
Photo: Getty Images
Skeletal muscle comprises fast-twitch (white) fibres that fatigue quickly and slow-twitch (red) fibres that are more resistant to fatigue. The protein α-actinin-3, which is found only in fast-twitch fibres, is absent in almost 20 per cent of people – almost 1.5 billion individuals – due to a mutation in the gene that codes for it. In evolutionary terms, the presence of the mutated gene increased when humans m ....

United States , Karolinska Institutet , Tomas Venckunas , Harrisond Wood , Nerijus Eimantas , Marius Brazaitis , Maja Schlittler , Peterj Houweling , Niklas Ivarsson , Volkerm Lauschke , Volker Lauschke , Danielc Andersson , Henrikas Paulauskas , Australia National Health , Swedish Society For Medical Research , Department Of Physiology , Lithuanian Sports University In Kaunas , Lung Foundation , Swedish Research Council , Swedish National Centre For Research , University Of Melbourne , Research Council Of Lithuania , Research Council , American Journal , Lithuanian Sports University , Swedish National Centre ,