Metabolic Stress Impairs Pericyte Response to Optogenetic Stimulation in Pancreatic Islets.
Metabolic Stress Impairs Pericyte Response to Optogenetic Stimulation in Pancreatic Islets.
复制标题
代谢应激损害胰岛周细胞对光遗传刺激的反应。
DOI:
10.3389/fendo.2022.918733
复制
发表时间:
2022
影响因子:
5.2
通讯作者:
中科院分区:
文献类型:
--
作者:
Pancreatic islets are highly vascularized micro-organs ensuring whole body glucose homeostasis. Islet vascular cells play an integral part in sustaining adequate insulin release by beta cells. In particular, recent studies have demonstrated that islet pericytes regulate local blood flow velocity and are required for maintenance of beta cell maturity and function. In addition, increased metabolic demand accompanying obesity alters islet pericyte morphology. Here, we sought to explore the effects of metabolic stress on islet pericyte functional response to stimulation in a mouse model of type 2 diabetes, directly in the pancreas in vivo . We found that high fat diet induced islet pericyte hypertrophy without alterations in basal local blood flow. However, optogenetic stimulation of pericyte activity revealed impaired islet vascular responses, despite increased expression of genes encoding proteins directly or indirectly involved in cell contraction. These findings suggest that metabolic stress impinges upon islet pericyte function, which may contribute to beta cell failure during T2D.
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影响因子:
56.9
作者:
Lammert, E;Cleaver, O;Melton, D
通讯作者:
Melton, D
影响因子:
25
作者:
通讯作者:
--
影响因子:
4.6
作者:
He L;Vanlandewijck M;Raschperger E;Andaloussi Mäe M;Jung B;Lebouvier T;Ando K;Hofmann J;Keller A;Betsholtz C
通讯作者:
Betsholtz C
影响因子:
11.8
作者:
Houtz, Jessica;Borden, Philip;Kuruvilla, Rejji
通讯作者:
Kuruvilla, Rejji
DOI:
10.1152/ajpendo.00044.2002
发表时间:
2002-09-01
影响因子:
5.1
作者:
Carlsson, PO;Olsson, R;Jansson, L
通讯作者:
Jansson, L