運動すると、男性はより多くの脂肪を燃やすようにプログラムされている(When Working Out, Males Are Programmed to Burn More Fat, while Females Recycle It—at Least in Rats)

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2024-05-01 パシフィック・ノースウェスト国立研究所(PNNL)

エネルギー省の研究者たちは、大規模な研究で運動が体に与える影響を探り、男性は女性よりも運動で脂肪を燃焼しやすいことを発見しました。運動の効果は多岐にわたり、心臓の強化や免疫力の向上など、35,000以上の分子に影響を与えています。特に、男女の脂肪組織の違いが顕著で、男性は脂肪を燃焼させる一方で、女性は脂肪を保持する傾向がありました。この研究は、個別の健康介入のための重要な基礎を築くものです。

<関連情報>

ラット皮下白色脂肪組織における性的二型性と運動トレーニングに対するマルチオミック反応 Sexual dimorphism and the multi-omic response to exercise training in rat subcutaneous white adipose tissue

Gina M. Many,James A. Sanford,Tyler J. Sagendorf,Zhenxin Hou,Pasquale Nigro,Katie L. Whytock,David Amar,Tiziana Caputo,Nicole R. Gay,David A. Gaul,Michael F. Hirshman,David Jimenez-Morales,Malene E. Lindholm,Michael J. Muehlbauer,Maria Vamvini,Bryan C. Bergman,Facundo M. Fernández,Laurie J. Goodyear,Andrea L. Hevener,Eric A. Ortlund,Lauren M. Sparks,Ashley Xia,Joshua N. Adkins,Sue C. Bodine,The MoTrPAC Study Group,+

Nature Metabolism  Published:01 May 2024

DOI:https://doi.org/10.1038/s42255-023-00959-9

figure 1

Abstract

Subcutaneous white adipose tissue (scWAT) is a dynamic storage and secretory organ that regulates systemic homeostasis, yet the impact of endurance exercise training (ExT) and sex on its molecular landscape is not fully established. Utilizing an integrative multi-omics approach, and leveraging data generated by the Molecular Transducers of Physical Activity Consortium (MoTrPAC), we show profound sexual dimorphism in the scWAT of sedentary rats and in the dynamic response of this tissue to ExT. Specifically, the scWAT of sedentary females displays -omic signatures related to insulin signaling and adipogenesis, whereas the scWAT of sedentary males is enriched in terms related to aerobic metabolism. These sex-specific -omic signatures are preserved or amplified with ExT. Integration of multi-omic analyses with phenotypic measures identifies molecular hubs predicted to drive sexually distinct responses to training. Overall, this study underscores the powerful impact of sex on adipose tissue biology and provides a rich resource to investigate the scWAT response to ExT.

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