Age-related changes in scavenger receptor-mediated endocytosis in rat liver sinusoidal endothelial cells.
Age-related changes in scavenger receptor-mediated endocytosis in rat liver sinusoidal endothelial cells.
复制标题
大鼠肝窦内皮细胞清道夫受体介导的内吞作用的年龄相关变化。
DOI:
10.1093/gerona/glq108
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发表时间:
2010
期刊:
影响因子:
--
通讯作者:
Sørensen,KarenKristine
中科院分区:
文献类型:
--
作者:
Simon-Santamaria,Jaione;Malovic,Ivana;Warren,Alessandra;Oteiza,Ana;LeCouteur,David;Smedsrød,Bård;McCourt,Peter;Sørensen,KarenKristine
Liver sinusoidal endothelial cells (LSECs) play an essential role in systemic waste clearance by effective endocytosis of blood-borne waste macromolecules. We aimed to study LSECs’ scavenger function during aging, and whether age-related morphological changes (eg, defenestration) affect this function, in F344/BN F1 rats. Endocytosis of the scavenger receptor ligand formaldehyde-treated serum albumin was significantly reduced in LSECs from old rats. Ligand degradation, LSEC protein expression of the major scavenger receptors for formaldehyde-treated serum albumin endocytosis, stabilin-1 and stabilin-2, and their staining patterns along liver sinusoids, was similar at young and old age, suggesting that other parts of the endocytic machinery are affected by aging. Formaldehyde-treated serum albumin uptake per cell, and cell porosity evaluated by electron microscopy, was not correlated, indicating that LSEC defenestration is not linked to impaired endocytosis. We report a significantly reduced LSEC endocytic capacity at old age, which may be especially important in situations with increased circulatory waste loads.
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DOI:
10.1186/1476-5926-7-4
发表时间:
2008-05-05
期刊:
Comparative hepatology
影响因子:
--
作者:
Martinez I;Nedredal GI;Øie CI;Warren A;Johansen O;Le Couteur DG;Smedsrød B
通讯作者:
Smedsrød B
DOI:
10.1186/1476-5926-2-s1-s22
发表时间:
2004-01-14
期刊:
Comparative hepatology
影响因子:
--
作者:
Smedsrød B
通讯作者:
Smedsrød B
DOI:
10.1002/ar.1092400302
发表时间:
1994-11
期刊:
The Anatomical Record
影响因子:
--
作者:
L. Speilberg;Ø. Evensen;P. Nafstad
通讯作者:
L. Speilberg;Ø. Evensen;P. Nafstad
影响因子:
7.8
作者:
J. L. Mego;F. Bertini;J. Donald McQueen
通讯作者:
J. Donald McQueen
影响因子:
13.5
作者:
A. Brouwer;R. Barelds;D. Knook
通讯作者:
D. Knook