کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6806692 | 1433576 | 2013 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Differential pathways for interleukin-1β production activated by chromogranin A and amyloid β in microglia
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
بیوشیمی، ژنتیک و زیست شناسی مولکولی
سالمندی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Differential pathways for interleukin-1β production activated by chromogranin A and amyloid β in microglia Differential pathways for interleukin-1β production activated by chromogranin A and amyloid β in microglia](/preview/png/6806692.png)
چکیده انگلیسی
Although chromogranin A (CGA) is frequently present in Alzheimer's disease (AD), senile plaques associated with microglial activation, little is known about basic difference between CGA and fibrillar amyloid-β (fAβ) as neuroinflammatory factors. Here we have compared the interleukin-1β (IL-1β) production pathways by CGA and fAβ in microglia. In cultured microglia, production of IL-1β was induced by CGA, but not by fAβ. CGA activated both nuclear factor-κB (NF-κB) and pro-caspase-1, whereas fAβ activated pro-caspase-1 only. For the activation of pro-caspase-1, both CGA and fAβ needed the enzymatic activity of cathepsin B (CatB), but only fAβ required cytosolic leakage of CatB and the NLRP3 inflammasome activation. In contrast, fAβ induced the IL-1β secretion from microglia isolated from the aged mouse brain. In AD brain, highly activated microglia, which showed intense immunoreactivity for CatB and IL-1β, surrounded CGA-positive plaques more frequently than Aβ-positive plaques. These observations indicate differential pathways for the microglial IL-1β production by CGA and fAβ, which may aid in better understanding of the pathological significance of neuroinflammation in AD.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Neurobiology of Aging - Volume 34, Issue 12, December 2013, Pages 2715-2725
Journal: Neurobiology of Aging - Volume 34, Issue 12, December 2013, Pages 2715-2725
نویسندگان
Zhou Wu, Li Sun, Sadayuki Hashioka, Sheng Yu, Claudia Schwab, Ryo Okada, Yoshinori Hayashi, Patrick L. McGeer, Hiroshi Nakanishi,