Abstract:
BACKGROUND AND PURPOSE:Inflammatory reaction plays a crucial role in cerebral ischemia reperfusion (IR) injury. It has been shown that activated microglia long-term existed in cerebral ischemia and induced second injury. Therefore, we hypothesize that prepared phosphatidylserine (PS)-modified microbubbles (PS-MBs) combined with ultrasound-targeted microbubble destruction (UTMD) can safely open the blood-brain barrier (BBB) and target activated microglia for inflammatory area in the later stage of ischemia reperfusion. METHODS:To verify our hypothesis, rat model of IR was established, then the change of activated microglia/macrophage (M/M) and permeability of BBB at 1, 7, 14, and 21 days could be clearly observed post IR. And the activated M/M still can be observed during the whole experiment. RESULTS:The Evans blue extravasation of BBB gradually declined from day 1 to day 21. Compared to the control group, microbubbles containing PS were taken up more by activated M/M (approximately twofold) both in vitro and in vivo. CONCLUSIONS:PS-MBs combined with ultrasound (US) exposure could safely open BBB, and the resulting PS nanoparticles (PS-NPs) could further target activated M/M in the neuroinflammation.
journal_name
J Neuroinflammationjournal_title
Journal of neuroinflammationauthors
Zhao R,Jiang J,Li H,Chen M,Liu R,Sun S,Ma,Liang X,Wang Sdoi
10.1186/s12974-018-1368-1subject
Has Abstractpub_date
2018-11-30 00:00:00pages
334issue
1issn
1742-2094pii
10.1186/s12974-018-1368-1journal_volume
15pub_type
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