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压力与免疫:心理应激如何加剧细菌感染?
Gallo团队的研究让压力与免疫之间的复杂关系变得更加清晰。他们发现,心理应激会通过活化下丘脑-垂体-肾上腺(HPA)轴,显著提高体内应激激素的水平。这种激素的增多,会导致我们皮肤中防御细菌入侵的“勇士”——抗菌肽Cathelicidin(CAMP)被抑制,结果就是皮肤屏障的免疫防御能力受损,从而易受细菌感染。想象一下,当你在超级市场里遭遇某种压力时,你的身体在默默承受着后果。
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