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Systemic urokinase

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https://www.readbyqxmd.com/read/28524122/-a-plasminogen-regulation-system-in-brain-tumors
#1
O I Kit, E M Frantsiyants, L S Kozlova, E E Rostorguev, I V Balyazin-Parfenov, Yu A Pogorelova
INTRODUCTION: Tumor progression and neovascularization during malignant processes are believed to be associated with plasminogen activators and the PAI-1 inhibitor, but their role and interactions in various types of brain tumors have been studied insufficiently. AIM: To conduct a comparative study of plasminogen regulation in optic nerve sheath meningiomas, glioblastomas, and brain metastases of breast cancer, as well as in perifocal tissues surrounding the tumors...
2017: Zhurnal Voprosy Neĭrokhirurgii Imeni N. N. Burdenko
https://www.readbyqxmd.com/read/28520219/plasminogen-activator-inhibitor-type-1-as-a-regulator-of-fibrosis
#2
Reyhaneh Rabieian, Maryam Boshtam, Mahshid Zareei, Shirin Kouhpayeh, Aria Masoudifar, Hamed Mirzaei
Fibrosis is known as a frequent and irreversible pathological condition which is associated with organ failure. Tissue fibrosis is a central process in a variety of chronic progressive diseases such as diabetes, hypertension, and persistent inflammation. This state could contribute to chronic injury and the initiation of tissue repair. Fibrotic disorders represent abnormal wound healing with defective matrix turnover and clearance that lead to excessive accumulation of extracellular matrix components. A variety of identified growth factors, cytokines, and persistently activated myofibroblasts have critical roles in the pathogenesis of fibrosis...
May 18, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28479088/ultrasound-and-intra-clot-microbubbles-enhanced-catheter-directed-thrombolysis-in%C3%A2-vitro-and-in%C3%A2-vivo
#3
Shunji Gao, Qiong Zhu, MengJiao Guo, Yuan Gao, Xiaoxiao Dong, Zhong Chen, Zheng Liu, Feng Xie
Insufficient penetration of microbubbles (MBs) into the vessel-obstructing thrombi significantly reduces the effectiveness of ultrasound thrombolysis (UT). The widely performed catheter-directed therapy (CDT) makes it possible to increase the local concentration of MBs in the clot. In an occluded vessel with a bypass, treatment of fresh human whole blood clots with CDT-based UT (intra-clot injection of MBs and urokinase, with ultrasound exposure) resulted in a significantly higher percentage of weight loss (35...
May 4, 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/28469403/effects-of-acute-exercise-on-circulating-soluble-form-of-the-urokinase-receptor-in-patients-with-major-depressive-disorder
#4
Anna Gustafsson, Filip Ventorp, Anita Gm Wisén, Lars Ohlsson, Lennart Ljunggren, Åsa Westrin
Inflammation has been proposed to play a role in the generation of depressive symptoms. Previously, we demonstrated that patients with major depressive disorder (MDD) have increased plasma levels of the soluble form of the urokinase receptor (suPAR), a marker for low-grade inflammation. The aim of this study was to test the hypothesis that acute exercise would induce inflammatory response characterized by increased suPAR and elucidate whether patients with MDD display altered levels of suPAR in response to acute exercise...
2017: Biomarker Insights
https://www.readbyqxmd.com/read/28458650/plasma-soluble-urokinase-type-plasminogen-activator-receptor-is-not-associated-with-neurological-outcome-in-patients-with-aneurysmal-subarachnoid-hemorrhage
#5
Heikki Kiiski, Ville Jalkanen, Marika Ala-Peijari, Mari Hämäläinen, Eeva Moilanen, Jukka Peltola, Jyrki Tenhunen
OBJECT: Aneurysmal subarachnoid hemorrhage (aSAH) is a common cause of death or long-term disability. Despite advances in neurocritical care, there is still only a very limited ability to monitor the development of secondary brain injury or to predict neurological outcome after aSAH. Soluble urokinase-type plasminogen activator receptor (suPAR) has shown potential as a prognostic and as an inflammatory biomarker in a wide range of critical illnesses since it displays an association with overall immune system activation...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28442916/expression-and-activity-of-the-urokinase-plasminogen-activator-system-in-canine-primary-brain-tumors
#6
John H Rossmeisl, Kelli Hall-Manning, John L Robertson, Jamie N King, Rafael V Davalos, Waldemar Debinski, Subbiah Elankumaran
BACKGROUND: The expression of the urokinase plasminogen activator receptor (uPAR), a glycosylphosphatidylinositol-anchored protein family member, and the activity of its ligand, urokinase-type plasminogen activator (uPA), have been associated with the invasive and metastatic potentials of a variety of human brain tumors through their regulation of extracellular matrix degradation. Domesticated dogs develop naturally occurring brain tumors that share many clinical, phenotypic, molecular, and genetic features with their human counterparts, which has prompted the use of the dogs with spontaneous brain tumors as models to expedite the translation of novel brain tumor therapeutics to humans...
2017: OncoTargets and Therapy
https://www.readbyqxmd.com/read/28429105/increased-expression-of-upa-upar-and-pai-1-in-psoriatic-skin-and-in-basal-cell-carcinomas
#7
K A Rubina, V Yu Sysoeva, E I Zagorujko, Z I Tsokolaeva, M I Kurdina, Ye V Parfyonova, V A Tkachuk
There is substantial evidence implicating the urokinase system in tissue remodeling during neo-vascularization, inflammation, tumor invasion, and metastasis. Regulated degradation of the extracellular matrix at the leading edge of migrating cells, mediated by uPA and uPAR, is required for tissue remodeling, invasiveness, and angiogenesis. Psoriasis and basal cell carcinoma (BCC) are the most common skin diseases. Pathogenesis of both of them is associated with keratinocyte hyperproliferation, inflammatory cell migration, and angiogenesis-processes in which the plasminogen system (uPA, uPAR, tPA, and PAI-1) plays a crucial role...
April 20, 2017: Archives of Dermatological Research
https://www.readbyqxmd.com/read/28416743/the-urokinase-plasminogen-activation-system-in-gastroesophageal-cancer-a-systematic-review-and-meta-analysis
#8
Daniel Brungs, Julia Chen, Morteza Aghmesheh, Kara L Vine, Therese M Becker, Martin G Carolan, Marie Ranson
BACKGROUND: The urokinase plasminogen activation (uPA) system is a crucial pathway for tumour invasion and establishment of metastasis. Although there is good evidence that uPA system expression is a clinically relevant biomarker in some solid tumours, its role in gastroesophageal cancer is uncertain. RESULTS: We identified 22 studies encompassing 1966 patients which fulfilled the inclusion criteria. uPA, uPAR, or PAI-1 expression is significantly associated with high risk clinicopathological features...
April 4, 2017: Oncotarget
https://www.readbyqxmd.com/read/28405670/a-long-acting-pai-1-inhibitor-reduce-thrombus-formation
#9
Shuangzhou Peng, Guangpu Xue, Lihu Gong, Chao Fang, Jingfei Chen, Cai Yuan, Zhuo Chen, Lishan Yao, Bruce Furie, Mingdong Huang
Plasminogen activator inhibitor 1 (PAI-1) is the main inhibitor of tissue-type and urokinase-type plasminogen activators (t/uPA) and plays an important role in the fibrinolytic system. Inhibition of PAI-1 activity prevents thrombosis and accelerates fibrinolysis, indicating that PAI-1 inhibitors may be used as effective antithrombotic agents. We previously designed a PAI-1 inhibitor (PAItrap) which is a variant of inactivated urokinase protease domain. In the present study, we tried to fuse PAItrap with human serum albumin (HSA) to develop a long-acting PAI-1 inhibitor...
April 13, 2017: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/28385810/regulation-of-p53-mediated-changes-in-the-upa-fibrinolytic-system-and-in-lung-injury-by-loss-of-surfactant-protein-c-expression-in-alveolar-epithelial-cells
#10
Bijesh Puthusseri, Amarnath S Marudamuthu, Nivedita Tiwari, Jian Fu, Steven Idell, Sreerama Shetty
Pulmonary surfactant protein-C (SP-C) expression by type II alveolar epithelial cells (AECs) is markedly reduced in diverse types of lung injuries and is often associated with AEC apoptosis. It is unclear whether loss of SP-C contributes to the increased p53 and urokinase-type plasminogen activator (uPA) system cross talk and apoptosis of AECs. We therefore inhibited SP-C expression in human and murine AECs using lentivirus vector expressing shRNA and tested p53 and downstream changes in uPA-fibrinolytic system...
April 6, 2017: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/28364860/regulatory-effects-of-estetrol-on-the-endothelial-plasminogen-pathway-and-endothelial-cell-migration
#11
Maria Magdalena Montt-Guevara, Giulia Palla, Stefania Spina, Guja Bernacchi, Elena Cecchi, Adrian Esteban Campelo, Jorge Eduardo Shortrede, Alessio Canu, Tommaso Simoncini
BACKGROUND: Estetrol (E4) is a natural estrogen produced solely during human pregnancy. E4 is suitable for clinical use since it acts as a selective estrogen receptor modulator. In clinical trials E4 has been seen to have little or no effect on coagulation. Hence, it is interesting to investigate whether E4 alters endothelial-dependent fibrinolysis. OBJECTIVES: We studied the effects of E4 on the fibrinolytic system and whether this could influence the ability of endothelial cells to migrate...
May 2017: Maturitas
https://www.readbyqxmd.com/read/28340565/u-par-expression-in-cancer-associated-fibroblast-new-acquisitions-in-multiple-myeloma-progression
#12
S Ciavarella, A Laurenzana, S De Summa, B Pilato, A Chillà, R Lacalamita, C Minoia, F Margheri, A Iacobazzi, A Rana, F Merchionne, G Fibbi, M Del Rosso, A Guarini, S Tommasi, S Serratì
BACKGROUND: Multiple Myeloma (MM) is a B-cell malignancy in which clonal plasma cells progressively expand within the bone marrow (BM) as effect of complex interactions with extracellular matrix and a number of microenvironmental cells. Among these, cancer-associated fibroblasts (CAF) mediate crucial reciprocal signals with MM cells and are associated to aggressive disease and poor prognosis. A large body of evidence emphasizes the role of the urokinase plasminogen activator (u-PA) and its receptor u-PAR in potentiating the invasion capacity of tumor plasma cells, but little is known about their role in the biology of MM CAF...
March 24, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28298247/tissue-specific-inhibition-of-urokinase-type-plasminogen-activator-expression-in-the-testes-of-mice-by-inducible-lentiviral-rna-interference-causes-male-infertility
#13
Kai Zhao, Yan Liu, Zhe Xiong, Lian Hu, Cheng-Liang Xiong
Urokinase-type plasminogen activator (uPA) is involved in many physiological processes, including male infertility. To explore the effects of uPA in male reproduction, we constructed an inducible uPA short hairpin RNA (shRNA) system expressed by lentiviral vectors. After proving inhibition of uPA expression in the mouse Sertoli cell line TM4 by 1μgmL-1 doxycycline (Dox), two lentivirus (pLenti4-shRNA and pLenti6/TR) were co-microinjected into mouse testes to produce TetR&shuPA mice model. Though oral gavage by 0...
March 16, 2017: Reproduction, Fertility, and Development
https://www.readbyqxmd.com/read/28283876/purification-of-serine-protease-from-polychaeta-lumbrineris-nipponica-and-assessment-of-its-fibrinolytic-activity
#14
Seung Ju Yeon, Goo Yong Chung, Jae Sang Hong, Jin Ha Hwang, Hwa Sung Shin
Ischemic stroke and cardiovascular disease can occur from blockage of blood vessels by fibrin clots formed naturally in the body. Therapeutic drugs of anticoagulant or thrombolytic agents have been studied; however, various problems have been reported such as side effects and low efficacy. Thus, development of new candidates that are more effective and safe is necessary. The objective of this study is to evaluate fibrinolytic activity, anti-coagulation, and characterization of serine protease purified from Lumbrineris nipponica, polychaeta, for new thrombolytic agents...
March 10, 2017: In Vitro Cellular & Developmental Biology. Animal
https://www.readbyqxmd.com/read/28249028/heart-rate-variability-during-hemodialysis-is-an-indicator-for-long-term-vascular-access-survival-in-uremic-patients
#15
Ya-Ting Huang, Yu-Ming Chang, I-Ling Chen, Chuan-Lan Yang, Show-Chin Leu, Hung-Li Su, Jsun-Liang Kao, Shih-Ching Tsai, Rong-Na Jhen, Woung-Ru Tang, Chih-Chung Shiao
BACKGROUND: Vascular access (VA) is the lifeline of hemodialysis patients. Although the autonomic nervous system might be associated with VA failure (VAF), it has never been addressed in previous studies. This study aimed to evaluate the predictive values of the heart rate variability (HRV) indices for long-term VA outcomes. METHODS: This retrospective study was conducted using a prospectively established cohort enrolling 175 adult chronic hemodialysis patients (100 women, mean age 65...
2017: PloS One
https://www.readbyqxmd.com/read/28236848/the-fibrinolytic-system-a-new-target-for-treatment-of-depression-with-psychedelics
#16
R D Idell, G Florova, A A Komissarov, S Shetty, R B S Girard, S Idell
Current understanding of the neurobiology of depression has grown over the past few years beyond the traditional monoamine theory of depression to include chronic stress, inflammation and disrupted synaptic plasticity. Tissue plasminogen activator (tPA) is a key factor that not only promotes fibrinolysis via the activation of plasminogen, but also contributes to regulation of synaptic plasticity and neurogenesis through plasmin-mediated activation of a probrain derived neurotrophic factor (BDNF) to mature BDNF...
March 2017: Medical Hypotheses
https://www.readbyqxmd.com/read/28210916/a-multiscale-mathematical-model-of-tumour-invasive-growth
#17
Lu Peng, Dumitru Trucu, Ping Lin, Alastair Thompson, Mark A J Chaplain
Known as one of the hallmarks of cancer (Hanahan and Weinberg in Cell 100:57-70, 2000) cancer cell invasion of human body tissue is a complicated spatio-temporal multiscale process which enables a localised solid tumour to transform into a systemic, metastatic and fatal disease. This process explores and takes advantage of the reciprocal relation that solid tumours establish with the extracellular matrix (ECM) components and other multiple distinct cell types from the surrounding microenvironment. Through the secretion of various proteolytic enzymes such as matrix metalloproteinases or the urokinase plasminogen activator (uPA), the cancer cell population alters the configuration of the surrounding ECM composition and overcomes the physical barriers to ultimately achieve local cancer spread into the surrounding tissue...
March 2017: Bulletin of Mathematical Biology
https://www.readbyqxmd.com/read/28209486/vasodilator-stimulated-phosphoprotein-vasp-depletion-from-breast-cancer-mda-mb-231-cells-inhibits-tumor-spheroid-invasion-through-downregulation-of-migfilin-%C3%AE-catenin-and-urokinase-plasminogen-activator-upa
#18
Vasiliki Gkretsi, Andreas Stylianou, Triantafyllos Stylianopoulos
A hallmark of cancer cells is their ability to invade surrounding tissues and form metastases. Cell-extracellular matrix (ECM)-adhesion proteins are crucial in metastasis, connecting tumor ECM with actin cytoskeleton thus enabling cells to respond to mechanical cues. Vasodilator-stimulated phosphoprotein (VASP) is an actin-polymerization regulator which interacts with cell-ECM adhesion protein Migfilin, and regulates cell migration. We compared VASP expression in MCF-7 and MDA-MB-231 breast cancer (BC) cells and found that more invasive MDA-MB-231 cells overexpress VASP...
March 15, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/28207534/a-case-control-study-on-the-structural-equation-model-of-the-mechanism-of-coagulation-and-fibrinolysis-imbalance-in-chronic-schistosomiasis
#19
Aiping Le, Lunli Zhang, Wei Liu, Xiaopeng Li, Jianwei Ren, An Ning
A structural equation model was used for verification with chronic schistosomiasis to investigate the coagulation-anticoagulation system imbalance and to deduce the mechanism of D-dimer (D-D) level elevation in patients with advanced schistosome hepatic disease. We detected the plasma levels of tissue-type fiber plasminogen activator (tPA), urokinase type plasminogen activator (uPA), plasmin-antiplasmin complex (PAP), plasminogen (PLG), antithrombin (AT), plasminogen activator inhibitor 1 (PAI1), D-D, factor VIII: C (FVIII:C), antithrombin-III (AT-III), PLG, protein S (PS), and protein C (PC) in the healthy people as control (69), patients with chronic schistosomiasis (150) or advanced chronic schistosomiasis (90)...
February 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28182117/fibrin-sheaths-in-central-venous-port-catheters-treatment-with-low-dose-single-injection-of-urokinase-on-an-outpatient-basis
#20
De-Hua Chang, Kamal Mammadov, Tilman Hickethier, Jan Borggrefe, Martin Hellmich, David Maintz, Christoph Kabbasch
PURPOSE: Evaluation of the efficacy of single-shot, low-dose urokinase administration for the treatment of port catheter-associated fibrin sheaths. METHODS: Forty-six patients were retrospectively evaluated for 54 episodes of port catheter dysfunction. The presence of a fibrin sheath was detected by angiographic contrast examinations. On an outpatient basis, patients subsequently received thrombolysis consisting of a single injection of urokinase (15.000 IU in 1...
2017: Therapeutics and Clinical Risk Management
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