Increased levels of brown fat may also be attributed to an increase in a brain chemical called brain-derived neurotrophic factor [BDNF] found in the sociable mice.

在社会性的小鼠大脑中发现，褐色脂肪的增加可能还归因于大脑中的一种化学物质，称为脑源性神经营养因子。

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But when they were given a drug called brain-derived neurotrophic factor, or BDNF, they lost their fear.

但是当给他们使用一种含有脑源性神经营养因子的药物后，恐惧消失了。

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They discovered that animals living in the enriched environment had higher levels of a protein called brain-derived neurotrophic factor (BDNF).

他们发现生活在复杂环境下的小白鼠有一种名叫脑源性神经营养因子（BDNF）的蛋白质水平较高。

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Research indicates that a diet high in added sugar reduces the production of a brain chemical known as brain-derived neurotrophic factor (BDNF).

FORBES: What Eating Too Much Sugar Does to Your Brain

Eugenol, like other antidepressants, increases expression of brain-derived neurotrophic factor (BDNF) gene in the hippocampus, which is necessary for an antidepressant to exhibit its activity.

FORBES: The Lessons Of Failure: What We Can Learn From Bapineuzumab's Blowup