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Unbalanced Metalloproteinase-9 and Tissue Inhibitors of Metalloproteinases Ratios Predict Hemorrhagic Transformation of Lesion in Ischemic Stroke Patients Treated with Thrombolysis: Results from the…

Overview of attention for article published in Frontiers in Neurology, May 2015
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Title
Unbalanced Metalloproteinase-9 and Tissue Inhibitors of Metalloproteinases Ratios Predict Hemorrhagic Transformation of Lesion in Ischemic Stroke Patients Treated with Thrombolysis: Results from the MAGIC Study
Published in
Frontiers in Neurology, May 2015
DOI 10.3389/fneur.2015.00121
Pubmed ID
Authors

Benedetta Piccardi, Vanessa Palumbo, Mascia Nesi, Patrizia Nencini, Anna Maria Gori, Betti Giusti, Giovanni Pracucci, Paolina Tonelli, Eleonora Innocenti, Alice Sereni, Elena Sticchi, Danilo Toni, Paolo Bovi, Mario Guidotti, Maria Rosaria Tola, Domenico Consoli, Giuseppe Micieli, Rossana Tassi, Giovanni Orlandi, Francesco Perini, Norina Marcello, Antonia Nucera, Francesca Massaro, Maria Luisa DeLodovici, Giorgio Bono, Maria Sessa, Rosanna Abbate, Domenico Inzitari

Abstract

Experimentally, metalloproteinases (MMPs) play a detrimental role related to the severity of ischemic brain lesions. Both MMPs activity and function in tissues reflect the balance between MMPs and tissue inhibitors of metalloproteinases (TIMPs). We aimed to evaluate the role of MMPs/TIMPs balance in the setting of rtPA-treated stroke patients. Blood was taken before and 24-h after rtPA from 327 patients (mean age 68 years, median NIHSS 11) with acute ischemic stroke. Delta median values of each MMP/TIMP ratio [(post rtPA MMP/TIMP-baseline MMP/TIMP)/(baseline MMP/TIMP)] were analyzed related to symptomatic intracranial hemorrhage (sICH) according to NINDS criteria, relevant hemorrhagic transformation (HT) defined as confluent petechiae within the infarcted area or any parenchymal hemorrhage, stroke subtypes (according to Oxfordshire Community Stroke Project) and 3-month death. The net effect of each MMP/TIMP ratio was estimated by a logistic regression model including major clinical determinants of outcomes. Adjusting for major clinical determinants, only increase in MMP9/TIMP1 and MMP9/TIMP2 ratios remained significantly associated with sICH (odds ratio [95% confidence interval], 1.67 [1.17-2.38], p = 0.005; 1.74 [1.21-2.49], p = 0.003, respectively). Only relative increase in MMP9/TIMP1 ratio proved significantly associated with relevant HT (odds ratio [95% confidence interval], 1.74 [1.17-2.57], p = 0.006) with a trend toward significance for MMP9/TIMP2 ratio (p = 0.007). Our data add substantial clinical evidence about the role of MMPs/TIMPs balance in rtPA-treated stroke patients. These results may serve to generate hypotheses on MMPs inhibitors to be administered together with rtPA in order to counteract its deleterious effect.

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The data shown below were collected from the profile of 1 X user who shared this research output. Click here to find out more about how the information was compiled.
Mendeley readers

Mendeley readers

The data shown below were compiled from readership statistics for 33 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Unknown 33 100%

Demographic breakdown

Readers by professional status Count As %
Student > Bachelor 6 18%
Professor > Associate Professor 6 18%
Student > Ph. D. Student 4 12%
Student > Master 3 9%
Other 2 6%
Other 4 12%
Unknown 8 24%
Readers by discipline Count As %
Medicine and Dentistry 12 36%
Biochemistry, Genetics and Molecular Biology 3 9%
Agricultural and Biological Sciences 3 9%
Neuroscience 3 9%
Pharmacology, Toxicology and Pharmaceutical Science 1 3%
Other 1 3%
Unknown 10 30%
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 14 May 2015.
All research outputs
#18,409,030
of 22,803,211 outputs
Outputs from Frontiers in Neurology
#7,722
of 11,670 outputs
Outputs of similar age
#192,625
of 266,726 outputs
Outputs of similar age from Frontiers in Neurology
#60
of 77 outputs
Altmetric has tracked 22,803,211 research outputs across all sources so far. This one is in the 11th percentile – i.e., 11% of other outputs scored the same or lower than it.
So far Altmetric has tracked 11,670 research outputs from this source. They typically receive a little more attention than average, with a mean Attention Score of 7.4. This one is in the 25th percentile – i.e., 25% 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 266,726 tracked outputs that were published within six weeks on either side of this one in any source. This one is in the 16th percentile – i.e., 16% of its contemporaries scored the same or lower than it.
We're also able to compare this research output to 77 others from the same source and published within six weeks on either side of this one. This one is in the 5th percentile – i.e., 5% of its contemporaries scored the same or lower than it.