Abstract：
:The two primary categories of stroke, ischemic and hemorrhagic, both have fundamentally different mechanisms and thus different treatment options. These two stroke categories were applied to rat models to identify potential biomarkers that can distinguish between them. Ischemic stroke was induced by middle cerebral artery occlusion (MCAO) without reperfusion while hemorrhagic stroke was induced by injecting collagenase IV into the striatum. Brain hemispheres and biofluids were collected at two time points: 3 and 6h after stroke. Known molecules were tested on the rat samples via quantitative immunoblotting (injured brain, CSF) and Banyan's proprietary ELISA assays (CSF, serum). The injured brain quantitative analyses revealed that αII-spectrin breakdown products (SBDP150, SBDP145) were strongly increased after 6h ischemia. In CSF, SBDP145 and ubiquitin C-terminal hydrolase-L1 (UCH-L1) levels were elevated after 6h ischemic stroke detected by Western blot and ELISA. In serum UCH-L1 levels were increased after 3 and 6h of ischemia detected by ELISA. However, levels of those proteins in hemorrhagic stroke remain normal. In summary, in both the brain and the biofluids, SBDPs and UCH-L1 were elevated after ischemic but not hemorrhagic stroke. These molecules behaved differently in the two stroke models and thus may be capable of being differentiated.
journal_name
Brain Resjournal_title
Brain researchauthors
Ren C,Zoltewicz S,Guingab-Cagmat J,Anagli J,Gao M,Hafeez A,Li N,Cao J,Geng X,Kobeissy F,Mondello S,Larner SF,Hayes RL,Ji X,Ding Ydoi
10.1016/j.brainres.2013.09.051subject
Has Abstractpub_date
2013-12-02 00:00:00pages
84-91eissn
0006-8993issn
1872-6240pii
S0006-8993(13)01325-5journal_volume
1540pub_type
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