Abstract:
:The pro-inflammatory cytokine IL-1β is known to play a role in several models of aging, neuroinflammation, and neurodegenerative diseases. Here, we document a detailed time- and age-dependent pattern of pro- and anti-inflammatory biomarkers following bilateral intrahippocampal injection of interleukin-1β. During the first 12h several pro- and anti-inflammatory cytokines increased in the aged (24 mo old) rats, some of which returned to baseline levels by 24h post-injection while others remained elevated for 72 h post-injection. In contrast, no such increases were observed in the young (3 mo old) rats. Interestingly, young rats up-regulated mRNA of two pro-inflammatory cytokines, interleukin-1β and tumor necrosis factor-α, but did not translate these transcripts into functional proteins, which may be related to expression of suppressor of cytokine signaling type-2. These results contribute to our understanding of how neuroinflammation may contribute to the pathogenesis of age-related neurodegenerative disorders due to an age-related bias towards a hyper-reactive immune response that is not selective for a pro- or anti-inflammatory phenotype following an inflammatory stimulus.
journal_name
J Neuroimmunoljournal_title
Journal of neuroimmunologyauthors
Hopp SC,Royer S,Brothers HM,Kaercher RM,D'Angelo H,Bardou I,Wenk GLdoi
10.1016/j.jneuroim.2013.12.010subject
Has Abstractpub_date
2014-02-15 00:00:00pages
86-91issue
1-2eissn
0165-5728issn
1872-8421pii
S0165-5728(13)00353-6journal_volume
267pub_type
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