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Nat Neurosci:瘦素可作用于非神经元细胞并影响进食

2014-06-26 佚名 不详

据在线发表于《自然—神经科学》上的一项研究称,饱胀感瘦素可以作用于大脑中的非神经元细胞并影响小鼠的进食行为。 瘦素是一类由体内脂肪细胞释放出的激素,具有调节进食行为和代谢的作用。Tamas Horvath等人发现调节进食和代谢的大脑区域——下丘脑中的星形胶质细胞中含有瘦素受体。 对负责编码星形胶质细胞中瘦素受体的基因进行删除,会改变受体的形状以及下丘脑中神经细胞形成的突触的数量。瘦素通常会抑制

据在线发表于《自然—神经科学》上的一项研究称,饱胀感瘦素可以作用于大脑中的非神经元细胞并影响小鼠的进食行为。

瘦素是一类由体内脂肪细胞释放出的激素,具有调节进食行为和代谢的作用。Tamas Horvath等人发现调节进食和代谢的大脑区域——下丘脑中的星形胶质细胞中含有瘦素受体。

对负责编码星形胶质细胞中瘦素受体的基因进行删除,会改变受体的形状以及下丘脑中神经细胞形成的突触的数量。瘦素通常会抑制进食行为,但在小鼠体内,星形胶质细胞中一旦没有瘦素受体,那么瘦素的作用将减弱。由于下丘脑的神经细胞能够控制进食行为,那么因为星形胶质细胞中瘦素受体的删除所造成的神经细胞连接性的改变或许决定了进食行为的最终变化。

该项研究首次发现瘦素能够作用于星形胶质细胞以及瘦素对神经细胞造成的影响以及从另一个角度让人们了解大脑及其内部各类型的细胞是如何调节进食行为的。

原始出处

Kim JG1, Suyama S1, Koch M2, Jin S1, Argente-Arizon P3, Argente J3, Liu ZW1, Zimmer MR1, Jeong JK4, Szigeti-Buck K1, Gao Y5, Garcia-Caceres C5, Yi CX5, Salmaso N6, Vaccarino FM7, Chowen J3, Diano S8, Dietrich MO1, Tschöp MH5, Horvath TL8.Leptin signaling in astrocytes regulates hypothalamic neuronal circuits and feeding.Nat Neurosci. 2014 Jul

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    2015-05-06 liye789132251
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    2014-06-28 lsndxfj
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    2014-06-28 sodoo
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    2014-06-28 gj0737

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