Zonation of hepatic fat accumulation: insights from mathematical modelling of nutrient gradients and fatty acid uptake
Zonation of hepatic fat accumulation: insights from mathematical modelling of nutrient gradients and fatty acid uptake
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肝脏脂肪积累的分区:营养梯度和脂肪酸摄取数学模型的见解
DOI:
10.1098/rsif.2017.0443
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发表时间:
2017
影响因子:
3.9
通讯作者:
S. Schuster
中科院分区:
文献类型:
--
作者:
Schleicher;U. Dahmen;R. Guthke;S. Schuster
Intrinsic of non-alcoholic fatty liver diseases is an aberrant accumulation of triglycerides (steatosis), which occurs inhomogeneously within lobules. To improve our understanding of the mechanisms involved in this zonation patterning, we developed a mathematical multicompartment model of hepatic fatty acid metabolism accompanied by blood flow simulations. A model analysis determines the influence of the uptake process of fatty acids, the porto-central gradient of plasma fatty acid concentration, and the oxygen supply via blood on the zonation of triglyceride accumulation. From this theoretical perspective, the plasma oxygen gradient, but not the fatty acid gradient, leads the way to a zonated triglyceride accumulation by its decisive role in oxidative processes. In addition, the uptake mechanism of fatty acids seems to be fundamental for a pericentral dominance of steatosis. However, the mechanism of cellular fatty acid uptake from the blood is still under debate. Our theoretical approach supports the transporter-mediated uptake mechanism and reveals that the maximal velocity of fatty acid uptake affects the switching between a periportal and a pericentral triglyceride accumulation. Further research on hepatic fatty acid uptake is needed to push forward our understanding of aberrant triglyceride accumulation in diet-induced steatosis.
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影响因子:
6.5
作者:
Huber, Andrew H.;Kleinfeld, Alan M.
通讯作者:
Kleinfeld, Alan M.
影响因子:
--
作者:
T. Kietzmann
通讯作者:
T. Kietzmann
DOI:
10.1042/bj3210017
发表时间:
1997
期刊:
The Biochemical journal
影响因子:
--
作者:
T. Kietzmann;U. Roth;Stefanie Freimann;K. Jungermann
通讯作者:
K. Jungermann
影响因子:
4.3
作者:
P. Berk;D. Stump
通讯作者:
P. Berk;D. Stump
影响因子:
15.9
作者:
Donnelly, KL;Smith, CI;Parks, EJ
通讯作者:
Parks, EJ