Leptin-inhibited PBN neurons enhance responses to hypoglycemia in negative energy balance.
Leptin-inhibited PBN neurons enhance responses to hypoglycemia in negative energy balance.
复制标题
DOI:
10.1038/nn.3861
复制
发表时间:
2014-12
影响因子:
25
通讯作者:
Myers, Martin G., Jr.
中科院分区:
文献类型:
--
作者:
Flak, Jonathan N.;Patterson, Christa M.;Garfield, Alastair S.;D'Agostino, Giuseppe;Goforth, Paulette B.;Sutton, Amy K.;Malec, Paige A.;Wong, Jenny-Marie T.;Germani, Mark;Jones, Justin C.;Rajala, Michael;Satin, Leslie;Rhodes, Christopher J.;Olson, David P.;Kennedy, Robert T.;Heisler, Lora K.;Myers, Martin G., Jr.
Hypoglycemia initiates the counter regulatory response (CRR), in which the sympathetic nervous system, glucagon, and glucocorticoids restore glucose to appropriate concentrations. During starvation, low leptin restrains energy utilization, enhancing long-term survival. To ensure short-term survival during hypoglycemia in fasted animals, the CRR must overcome this energy-sparing program and nutrient depletion. Here, we identify in mice a previously unrecognized role for leptin and a population of leptin-regulated neurons that modulate the CRR to meet these challenges. Hypoglycemia activates leptin receptor (LepRb) and cholecystokinin (CCK)-expressing neurons of the parabrachial nucleus (PBN), which project to the ventromedial hypothalamic nucleus. Leptin inhibits these cells and Cckcre-mediated ablation of LepRb enhances the CRR. Inhibition of PBN LepRb cells blunts the CRR, while their activation mimics the CRR in a CCK-dependent manner. PBN LepRbCCK neurons represent a crucial component of the CRR system, and may represent a therapeutic target in hypoglycemia.
登录
查看更多内容
DOI:
10.1073/pnas.0700293104
发表时间:
2007-03-20
影响因子:
11.1
作者:
Armbruster, Blaine N.;Li, Xiang;Roth, Bryan L.
通讯作者:
Roth, Bryan L.
影响因子:
29
作者:
Le Lay J;Tuteja G;White P;Dhir R;Ahima R;Kaestner KH
通讯作者:
Kaestner KH
影响因子:
7.7
作者:
Levin, Barry E.;Becker, Thomas C.;Dunn-Meynell, Ambrose A.
通讯作者:
Dunn-Meynell, Ambrose A.
影响因子:
4.8
作者:
Huo, Lihong;Maeng, Lisa;Grill, Harvey J.
通讯作者:
Grill, Harvey J.
影响因子:
4.8
作者:
Legradi, G;Emerson, CH;Lechan, RM
通讯作者:
Lechan, RM