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Cell:揭示“爱情荷尔蒙”调节性行为的分子机理

2014-10-14 佚名 生物谷

催产素一直被认为是“爱情荷尔蒙”,因为其在人类的社会行为中扮演着重要角色,比如孕妇保健和雌雄配对等;近日,发表在国际杂志Cell上的一篇研究报告中,来自洛克斐勒大学的科学家通过研究发现了雄性小鼠处于动情阶段对雌性小鼠产生“性趣”的催产素敏感脑细胞,这些大脑神经元细胞在前额皮质中被发现,其在催产素相关的其它社会行为中扮演着重要角色,比如亲密行为等。 研究者Nathaniel Heintz教授表

催产素一直被认为是“爱情荷尔蒙”,因为其在人类的社会行为中扮演着重要角色,比如孕妇保健和雌雄配对等;近日,发表在国际杂志Cell上的一篇研究报告中,来自洛克斐勒大学的科学家通过研究发现了雄性小鼠处于动情阶段对雌性小鼠产生“性趣”的催产素敏感脑细胞,这些大脑神经元细胞在前额皮质中被发现,其在催产素相关的其它社会行为中扮演着重要角色,比如亲密行为等。

研究者Nathaniel Heintz教授表示,我们的研究揭示了,刺激催产素产生的社会干预行为会通过改变哺乳动物的社会处境来协调个体的复杂行为,当然这也包括人类在内;未来对特殊神经回路的深入剖析也将帮助理解孤独症及其它社会行为障碍发病的分子机理。

催产素敏感性神经元在许多大脑结构中都存在,其是多种社会行为必不可少的激素,但研究者并不清楚催产素靶向作用的细胞,或者说催产素影响神经回路的分子机制。而本文中研究人员发现,一系列存在于大脑内侧前额叶皮质的神经元细胞可以表达催产素受体,当干扰这些神经元的活性时,处于发情期的雌性小鼠就会失去对雄性小鼠的“性趣”,然而雌性小鼠还会保持同雄性小鼠在其它社会行为上的水平。

这项研究显示,催产素敏感神经元可以调节小鼠社会行为的许多方面,研究者Heintz最后说道,我们的工作阐明了额叶前皮质在社会行为及性行为上的重要作用,同时也揭示了关键的细胞群体或许可以介导其它的行为来对催产素水平升高产生反应。

原始出处

Nakajima M1, Görlich A1, Heintz N2.Oxytocin Modulates Female Sociosexual Behavior through a Specific Class of Prefrontal Cortical Interneurons.Cell. 2014 Oct 9.

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    2015-06-27 维他命
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    2014-10-16 xugc
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