Unrestrained activation of the proteolytic systems in anastomotic tissue during repair has been implicated in the pathogenesis of anastomotic leakage. We hypothesized that this mechanism may promote an up-regulation of the urokinase-type plasminogen activator system and a spillover of soluble urokinase-type plasminogen activator receptor (suPAR) into blood. In this retrospective analysis patients with anastomotic leakage were compared with a group of matched uncomplicated patients. Anastomotic leakage complicated patients had significantly higher suPAR (p = 0.04) levels until day 3 after surgery. The area under the receiver-operating characteristic (ROC) for suPAR was higher than that CRP (0.874 vs. 0.836). Their analysis suggests the possible use of suPAR as serum marker to characterize the persistent inflammatory response that lead to tissue damage and surgical complication.
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http://dx.doi.org/10.1111/wrr.12493 | DOI Listing |
Alzheimers Dement
January 2025
Department of Neurology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China.
Introduction: We investigated the specific factors driving abnormal angiogenesis in Alzheimer's disease (AD) and its role in cerebrovascular lesions and neurodegeneration.
Methods: We assessed cerebrovascular pathologies, amyloid-beta (Aβ), and tau pathologies in post mortem human brains and detected 12 angiogenic factors in cerebrospinal fluid (CSF) from the China Aging and Neurodegenerative Disease Initiative (CANDI) cohort.
Results: We observed severe blood-brain barrier damage and elevated levels of the vascular marker CD31 in human AD brains, which had a stronger correlation with tau pathology than Aβ pathology.
Biomolecules
December 2024
Division of Biochemistry, University of Fribourg, 1700 Fribourg, Switzerland.
Emerging evidence suggests the serine protease, urokinase plasminogen activator (uPA), may play an important role in the modulation of mood and cognitive functions. Also, preliminary evidence indicates that uPA modulates BDNF activity that is known to be involved in the pathogenesis of mood disorders. However, the physiological functions of uPA in specific brain regions for mediating stress-related emotional behaviors remain to be elucidated.
View Article and Find Full Text PDFUnlabelled: Chronic back pain (CBP) is the leading cause of disability affecting 1 in 10 people worldwide. Symptoms are marked by persistent lower back pain, reduced mobility, and heightened cold sensitivity. Here, we utilize a mouse model of CBP induced by injecting urokinase-type plasminogen activator (uPA), a proinflammatory agent in the fibrinolytic pathway, between the L2/L3 lumbar vertebrae.
View Article and Find Full Text PDFBMC Med
January 2025
Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.
Background: The benefits of intravenous thrombolysis in patients with acute minor stroke remain controversial. For the aim of providing a better therapeutic strategy, high-quality trials are required to validate the efficacy of thrombolytic medicine other than intravenous recombinant tissue plasminogen and tenecteplase. In the trial, we evaluate the efficacy and safety of urokinase (UK) in acute minor stroke.
View Article and Find Full Text PDFACS Cent Sci
December 2024
Department of Molecular Sciences and Nanosystems, Ca' Foscari University of Venice, Via Torino 155, 30172 Mestre, Italy.
Computational generation of cyclic peptide inhibitors using machine learning models requires large size training data sets often difficult to generate experimentally. Here we demonstrated that sequential combination of Random Forest Regression with the pseudolikelihood maximization Direct Coupling Analysis method and Monte Carlo simulation can effectively enhance the design pipeline of cyclic peptide inhibitors of a tumor-associated protease even for small experimental data sets. Further studies showed that such -evolved cyclic peptides are more potent than the best peptide inhibitors previously developed to this target.
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