Excess dietary carbohydrate affects mitochondrial integrity as observed in brown adipose tissue.
Excess dietary carbohydrate affects mitochondrial integrity as observed in brown adipose tissue.
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DOI:
10.1016/j.celrep.2021.109488
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发表时间:
2021-08-03
期刊:
影响因子:
8.8
通讯作者:
Wu N
中科院分区:
文献类型:
--
作者:
Waldhart AN;Muhire B;Johnson B;Pettinga D;Madaj ZB;Wolfrum E;Dykstra H;Wegert V;Pospisilik JA;Han X;Wu N
Hyperglycemia affects over 400 million individuals worldwide. The detrimental health effects are well studied at the tissue level, but the in vivo effects at the organelle level are poorly understood. To establish such an in vivo model, we used mice lacking TXNIP, a negative regulator of glucose uptake. Examining mitochondrial function in brown adipose tissue, we find that TXNIP KO mice have a lower content of polyunsaturated fatty acids (PUFAs) in their membrane lipids, which affects mitochondrial integrity and electron transport chain efficiency and ultimately results in lower mitochondrial heat output. This phenotype can be rescued by a ketogenic diet, confirming the usefulness of this model and highlighting one facet of early cellular damage caused by excess glucose influx. Waldhart et al. show in vivo evidence that excess glucose has detrimental effects on mitochondrial function by changing the acyl-chain composition of structural lipids.
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影响因子:
5.8
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通讯作者:
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影响因子:
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DOI:
10.1152/ajpendo.00213.2007
发表时间:
2007-11-01
影响因子:
5.1
作者:
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通讯作者:
Jacobsson, Anders