Insulin therapy for pre-hyperglycemic beta-cell endoplasmic reticulum crowding.
Insulin therapy for pre-hyperglycemic beta-cell endoplasmic reticulum crowding.
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DOI:
10.1371/journal.pone.0054351
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发表时间:
2013
期刊:
影响因子:
3.7
通讯作者:
Hodish I
中科院分区:
文献类型:
--
作者:
Absood A;Gandomani B;Zaki A;Nasta V;Michail A;Habib PM;Hodish I
Insulin therapy improves β-cell function in early stages of diabetes by mechanisms that may exceed alleviation of glucotoxicity. In advance type 2 diabetes, hyperglycemia causes β-cell damage and ultimately β-cell loss. At such an advanced stage, therapeutic modalities are often inadequate. Growing evidence indicates that in early stages of type-2 diabetes and some types of monogenic diabetes linked with malfunctioning endoplasmic-reticulum (ER), the β-cell ER fails to process sufficient proinsulin once it becomes overloaded. These changes manifest with ER distention (ER-crowding) and deficiency of secretory granules. We hypothesize that insulin therapy may improves β-cell function by alleviating ER-crowding. To support this hypothesis, we investigated pre-diabetic β-cell changes in hProC(A7)Y-CpepGFP transgenic mice that develop prolonged pre-diabetes due to proinsulin dysmaturation and ER-crowding. We attenuated the β-cell ER proinsulin synthesis with a treat-to-target insulin therapy while avoiding hypoglycemia and weight gain. Alleviation of ER-crowding resulted in temporary improvement in proinsulin maturation, insulin secretion and glucose tolerance. Our observations suggest that alleviation of pre-diabetic ER-crowding using a treat-to-target insulin therapy may improve β-cell function and may prevent further metabolic deterioration.
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影响因子:
7.7
作者:
Hodish I;Absood A;Liu L;Liu M;Haataja L;Larkin D;Al-Khafaji A;Zaki A;Arvan P
通讯作者:
Arvan P
影响因子:
3.7
作者:
Boffetta P;McLerran D;Chen Y;Inoue M;Sinha R;He J;Gupta PC;Tsugane S;Irie F;Tamakoshi A;Gao YT;Shu XO;Wang R;Tsuji I;Kuriyama S;Matsuo K;Satoh H;Chen CJ;Yuan JM;Yoo KY;Ahsan H;Pan WH;Gu D;Pednekar MS;Sasazuki S;Sairenchi T;Yang G;Xiang YB;Nagai M;Tanaka H;Nishino Y;You SL;Koh WP;Park SK;Shen CY;Thornquist M;Kang D;Rolland B;Feng Z;Zheng W;Potter JD
通讯作者:
Potter JD
影响因子:
16.2
作者:
Hoerger, Thomas J.;Gregg, Edward W.;Saaddine, Jinan B.
通讯作者:
Saaddine, Jinan B.
影响因子:
5.1
作者:
Bache, I;Jorgensen, KH;Buschard, K
通讯作者:
Buschard, K
DOI:
10.1152/ajpendo.00321.2002
发表时间:
2003-01-01
影响因子:
5.1
作者:
Hara, M;Wang, XY;Bell, GI
通讯作者:
Bell, GI