Melanocortin-4 receptors expressed by cholinergic neurons regulate energy balance and glucose homeostasis.
Melanocortin-4 receptors expressed by cholinergic neurons regulate energy balance and glucose homeostasis.
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DOI:
10.1016/j.cmet.2011.01.010
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发表时间:
2011-02-02
期刊:
影响因子:
29
通讯作者:
Elmquist JK
中科院分区:
文献类型:
--
作者:
Rossi J;Balthasar N;Olson D;Scott M;Berglund E;Lee CE;Choi MJ;Lauzon D;Lowell BB;Elmquist JK
Melanocortin-4-receptor (MC4R) mutations cause dysregulation of energy balance and hyperinsulinemia. We have used mouse models to study the physiological roles of extrahypothalamic MC4Rs. Re-expression of MC4Rs in cholinergic neurons (ChAT-Cre, loxTB MC4R mice) modestly reduced body weight gain without altering food intake and was sufficient to normalize energy expenditure and attenuate hyperglycemia and hyperinsulinemia. In contrast, restoration of MC4R expression in brainstem neurons including those in the dorsal motor nucleus of the vagus (Phox2b-Cre, loxTB MC4R mice) was sufficient to attenuate hyperinsulinemia, while the hyperglycemia and energy balance were not normalized. Additionally, hepatic insulin action and insulin mediated-suppression of hepatic glucose production were improved in ChAT-Cre, loxTB MC4R mice. These findings suggest that MC4Rs expressed by cholinergic neurons regulate energy expenditure and hepatic glucose production. Our results also provide further evidence of the dissociation in pathways mediating the effects of melanocortins on energy balance and glucose homeostasis.
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DOI:
10.1002/cne.22221
发表时间:
2010-01-01
期刊:
The Journal of comparative neurology
影响因子:
--
作者:
Gautron L;Lee C;Funahashi H;Friedman J;Lee S;Elmquist J
通讯作者:
Elmquist J
影响因子:
2.9
作者:
Fan, Wei;Morrison, Shaun F.;Yu, Pinxuan
通讯作者:
Yu, Pinxuan
影响因子:
15.9
作者:
Nogueiras, Ruben;Wiedmer, Petra;Tschoep, Matthias H.
通讯作者:
Tschoep, Matthias H.
影响因子:
3
作者:
Chen, AS;Metzger, JM;Van der Ploeg, LHT
通讯作者:
Van der Ploeg, LHT
影响因子:
29
作者:
Hill JW;Elias CF;Fukuda M;Williams KW;Berglund ED;Holland WL;Cho YR;Chuang JC;Xu Y;Choi M;Lauzon D;Lee CE;Coppari R;Richardson JA;Zigman JM;Chua S;Scherer PE;Lowell BB;Brüning JC;Elmquist JK
通讯作者:
Elmquist JK