Title |
Brain pericytes among cells constituting the blood-brain barrier are highly sensitive to tumor necrosis factor-α, releasing matrix metalloproteinase-9 and migrating in vitro
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Published in |
Journal of Neuroinflammation, August 2011
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DOI | 10.1186/1742-2094-8-106 |
Pubmed ID | |
Authors |
Fuyuko Takata, Shinya Dohgu, Junichi Matsumoto, Hiroyuki Takahashi, Takashi Machida, Tomoya Wakigawa, Eriko Harada, Haruki Miyaji, Mitsuhisa Koga, Tsuyoshi Nishioku, Atsushi Yamauchi, Yasufumi Kataoka |
Abstract |
Increased matrix metalloproteinase (MMP)-9 in the plasma and brain is associated with blood-brain barrier (BBB) disruption through proteolytic activity in neuroinflammatory diseases. MMP-9 is present in the brain microvasculature and its vicinity, where brain microvascular endothelial cells (BMECs), pericytes and astrocytes constitute the BBB. Little is known about the cellular source and role of MMP-9 at the BBB. Here, we examined the ability of pericytes to release MMP-9 and migrate in response to inflammatory mediators in comparison with BMECs and astrocytes, using primary cultures isolated from rat brains. |
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