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Ulinastatin protects brain against cerebral ischemia/reperfusion injury through inhibiting MMP-9 and alleviating loss of ZO-1 and occludin proteins in mice

Overview of attention for article published in Experimental Neurology, December 2017
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Title
Ulinastatin protects brain against cerebral ischemia/reperfusion injury through inhibiting MMP-9 and alleviating loss of ZO-1 and occludin proteins in mice
Published in
Experimental Neurology, December 2017
DOI 10.1016/j.expneurol.2017.12.016
Pubmed ID
Authors

Xiao-Fang Li, Xiang-Jian Zhang, Cong Zhang, Li-Na Wang, Yao-Ru Li, Ye Zhang, Ting-Ting He, Xing-Yuan Zhu, Li-Li Cui, Bu-Lang Gao

Abstract

The effects of Ulinastatin (UTI) on the blood-brain barrier (BBB) in the acute phase of cerebral ischemia/reperfusion (I/R) are not clear. This study was to investigate the potential protective effects of UTI on the BBB and the underlying mechanisms. Male CD-1 mice were subjected to transient middle cerebral artery occlusion (tMCAO) and randomly assigned to four groups: Sham (sham-operated), tMCAO (tMCAO+0.9% saline), UTI-L (tMCAO+UTI 1500U/100g) and UTI-H (tMCAO+UTI 3000U/100g) group. UTI was administered immediately after reperfusion in the UTI-L and UTI-H groups. At 24h after reperfusion, the neurological deficit, brain water content, and infarct volume were determined. Western blot and quantitative reverse transcription polymerase chain reaction (qRT-PCR) were used to examine the expression of matrix metalloproteinase (MMP)-9, Zonula occludens-1 (ZO-1) and occludin in ischemic cerebral cortex. The integrity of the BBB was assessed by the leakage of Evans blue. Compared with tMCAO group, both UTI-L and UTI-H groups showed significantly (P<0.001) ameliorated the neurological deficit (2.00±0.71 and 1.60±0.55 vs. 4.60±0.55), lessened brain water content (82.99%±0.21% and 82.05%±0.59% vs. 84.28%±0.0.57%) and decreased the infarct volume (38.52%±1.72% and 24.78%±1.20% vs. 49.48%±1.93%). In addition, significantly (P<0.001) decreased expression of MMP-9 (0.48±0.06 and 0.37±0.05 vs.0.76±0.10 for protein and 2.88±0.23 and 2.17±0.16 vs. 3.90±0.24 for mRNA) and alleviated loss of ZO-1 (0.19±0.04 and 0.24±0.05 vs. 0.25±0.03) and occludin (0.74±0.08 and 0.87±0.07 vs. 0.94±0.06) proteins were observed in both UTI-L and UTI-H groups. UTI protects the brain against ischemic injury potentially via down-regulating the expression of MMP-9 and alleviating loss of ZO-1 and occludin proteins to restore the BBB permeability.

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Mendeley readers

Mendeley readers

The data shown below were compiled from readership statistics for 18 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Unknown 18 100%

Demographic breakdown

Readers by professional status Count As %
Other 2 11%
Lecturer 2 11%
Professor 2 11%
Student > Doctoral Student 1 6%
Student > Bachelor 1 6%
Other 3 17%
Unknown 7 39%
Readers by discipline Count As %
Neuroscience 3 17%
Medicine and Dentistry 2 11%
Nursing and Health Professions 1 6%
Veterinary Science and Veterinary Medicine 1 6%
Pharmacology, Toxicology and Pharmaceutical Science 1 6%
Other 1 6%
Unknown 9 50%
Attention Score in Context

Attention Score in Context

This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 02 January 2018.
All research outputs
#17,292,294
of 25,382,440 outputs
Outputs from Experimental Neurology
#3,012
of 3,974 outputs
Outputs of similar age
#283,439
of 449,137 outputs
Outputs of similar age from Experimental Neurology
#18
of 30 outputs
Altmetric has tracked 25,382,440 research outputs across all sources so far. This one is in the 21st percentile – i.e., 21% of other outputs scored the same or lower than it.
So far Altmetric has tracked 3,974 research outputs from this source. They typically receive a little more attention than average, with a mean Attention Score of 5.3. This one is in the 17th percentile – i.e., 17% of its peers scored the same or lower than it.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 449,137 tracked outputs that were published within six weeks on either side of this one in any source. This one is in the 27th percentile – i.e., 27% of its contemporaries scored the same or lower than it.
We're also able to compare this research output to 30 others from the same source and published within six weeks on either side of this one. This one is in the 30th percentile – i.e., 30% of its contemporaries scored the same or lower than it.