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Plasmin

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https://www.readbyqxmd.com/read/28545187/enterolactone-suppresses-proliferation-migration-and-metastasis-of-mda-mb-231-breast-cancer-cells-through-inhibition-of-upa-induced-plasmin-activation-and-mmps-mediated-ecm-remodeling
#1
Aniket V Mali, Asavari A Joshi, Mahabaleshwar V Hegde, Shivajirao S Kadam
Background: To enhance their own survival, tumor cells can manipulate their microenvironment through remodeling of the extra cellular matrix (ECM). The urokinase-type plasminogen activator (uPA) system catalyzes plasmin production which further mediates activation of matrix metalloproteinases (MMPs) and plays an important role in breast cancer invasion and metastasis through ECM remodeling. This provides a potential target for therapeutic intervention of breast cancer treatment. Enterolactone (EL) is derived from dietary flax lignans in the human body and is known to have anti-breast cancer activity...
April 1, 2017: Asian Pacific Journal of Cancer Prevention: APJCP
https://www.readbyqxmd.com/read/28541957/the-cutting-edge-of-retinopathy-of-prematurity-care-expanding-the-boundaries-of-diagnosis-and-treatment
#2
Yoshihiro Yonekawa, Benjamin J Thomas, Aristomenis Thanos, Bozho Todorich, Kimberly A Drenser, Michael T Trese, Antonio Capone
PURPOSE: To discuss the latest advances and controversies in the diagnosis and care of infants with retinopathy of prematurity (ROP). METHODS: Literature review. RESULTS: Retinopathy of prematurity remains a major global issue. Industrialized nations now treat profoundly premature infants with posterior and aggressive disease, and middle-income nations are experiencing ROP epidemics. Remote digital imaging may address the decreasing ratio of ROP providers to premature infants, in addition to improving patient care...
May 24, 2017: Retina
https://www.readbyqxmd.com/read/28539608/development-and-validation-of-a-high-throughput-whole-blood-thrombolysis-plate-assay
#3
T Bonnard, L S Law, Z Tennant, C E Hagemeyer
The objective of this work was to develop a high throughput assay for testing in vitro the thrombolytic activity using citrated whole blood samples, and to overcome the limitations of currently available techniques. We successfully developed a method that involves forming halo shaped, tissue factor induced, whole blood clots in 96 well plates, and then precisely measuring the thrombolysis process with a spectrophotometer plate reader. We here describe the implementation of this novel method, which we refer to as halo assay, and its validation with plasmin, urokinase and tissue plasminogen activator at different doses...
May 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28525975/venous-thromboembolism-in-hospitalized-patients-receiving-chemotherapy-for-malignancies-at-japanese-community-hospital-prospective-observational-study
#4
Hiromitsu Kitayama, Tomohiro Kondo, Junko Sugiyama, Kazutomo Kurimoto, Yasuhiro Nishino, Michiaki Hirayama, Yasushi Tsuji
BACKGROUND: Although Asian population was recognized to have a lower risk of venous thromboembolism (VTE), its increasing prevalence and incidence remain unclear in patients with malignancies. We attempted to predict VTE development using activation markers of coagulation and fibrinolysis. METHODS: We enrolled patients with malignancy admitted to Tonan Hospital between April and December 2014 to receive a new-for-them chemotherapy regimen. All patients were examined for VTE by computed tomography and whole-leg compression ultrasonography before chemotherapy and three months later...
May 19, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28524014/composition-and-enzymatic-activity-in-bulk-milk-from-dairy-farms-with-conventional-or-robotic-milking-systems
#5
Monika Johansson, Åse Lundh, Ruben de Vries, Kerstin Svennersten Sjaunja
The objective of the studies reported in this research communication was to investigate differences in composition and enzymatic activities in bulk milk samples provided from Swedish dairy farms with different management systems, i.e. automated (AMS) and conventional milking systems (CMS). A bulk milk sample was collected from each of 104 dairy farms, 51 using AMS and 53 using CMS, located in the same geographical region. Sampling took place within two consecutive days during the indoor period (October). Milk samples were analysed for contents of total fat and protein, free fatty acids (FFA), caseins and whey proteins, somatic cell count (SCC), pH, plasmin and plasminogen derived activities, and total proteolysis...
May 2017: Journal of Dairy Research
https://www.readbyqxmd.com/read/28510599/selective-inhibition-of-brain-endothelial-rho-kinase-2-provides-optimal-protection-of-an-in-vitro-blood-brain-barrier-from-tissue-type-plasminogen-activator-and-plasmin
#6
Be'eri Niego, Natasha Lee, Pia Larsson, T Michael De Silva, Amanda E-Ling Au, Fiona McCutcheon, Robert L Medcalf
Rho-kinase (ROCK) inhibition, broadly utilised in cardiovascular disease, may protect the blood-brain barrier (BBB) during thrombolysis from rt-PA-induced damage. While the use of nonselective ROCK inhibitors like fasudil together with rt-PA may be hindered by possible hypotensive side-effects and inadequate capacity to block detrimental rt-PA activity in brain endothelial cells (BECs), selective ROCK-2 inhibition may overcome these limitations. Here, we examined ROCK-2 expression in major brain cells and compared the ability of fasudil and KD025, a selective ROCK-2 inhibitor, to attenuate rt-PA-induced BBB impairment in an in vitro human model...
2017: PloS One
https://www.readbyqxmd.com/read/28502961/haptoglobin-reduces-inflammatory-cytokine-inf-%C3%AE-and-facilitates-clot-formation-in-acute-severe-burn-rat-model
#7
Hiroyuki Koami, Yuichiro Sakamoto, Taku Miyasho, Ryo Noguchi, Norio Sato, Keita Kai, Kosuke Chris Yamada, Satoshi Inoue
Haptoglobin exerts renal protective function by scavenging free hemoglobin from the urine and blood stream in patients with hemolytic disorders. Recent studies elucidate the relationships between haptoglobin and inflammation. In addition, coagulopathy is often induced by systemic inflammation characterized by the presence of vascular endothelial damage. We hypothesize that haptoglobin might have an anti-inflammatory effect and affect hypercoagulability using rat burn model. Thirty anesthetized rats of six-weeks of age received over 30% full-thickness scald burn on the dorsal skin surface...
2017: Journal of Nippon Medical School, Nippon Ika Daigaku Zasshi
https://www.readbyqxmd.com/read/28501622/the-role-of-plasmin-in-the-pathogenesis-of-murine-multiple-myeloma
#8
Salita Eiamboonsert, Yousef Salama, Hiroshi Watarai, Douaa Dhahri, Yuko Tsuda, Yoshio Okada, Koichi Hattori, Beate Heissig
Aside from a role in clot dissolution, the fibrinolytic factor, plasmin is implicated in tumorigenesis. Although abnormalities of coagulation and fibrinolysis have been reported in multiple myeloma patients, the biological roles of fibrinolytic factors in multiple myeloma (MM) using in vivo models have not been elucidated. In this study, we established a murine model of fulminant MM with bone marrow and extramedullar engraftment after intravenous injection of B53 cells. We found that the fibrinolytic factor expression pattern in murine B53 MM cells is similar to the expression pattern reported in primary human MM cells...
May 10, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28497494/global-assays-of-fibrinolysis
#9
REVIEW
A Ilich, I Bokarev, N S Key
Fibrinolysis is an important and integral part of the hemostatic system. Acting as a balance to blood coagulation, the fibrinolytic system protects the body from unwanted thrombus formation and occlusion of blood vessels. As long as blood coagulation and fibrinolysis remain in equilibrium, response to injury, such as vessel damage, is appropriately regulated. However, alterations in this balance may lead to thrombosis or bleeding. A variety of methods have been proposed to assess fibrinolytic activity in blood or its components, but due to the complexity of the system, the design of a "gold standard" assay that reflects overall fibrinolysis has remained an elusive goal...
May 12, 2017: International Journal of Laboratory Hematology
https://www.readbyqxmd.com/read/28493932/safety-and-tolerability-of-high-dose-ulinastatin-after-2-hour-intravenous-infusion-in-adult-healthy-chinese-volunteers-a-randomized-double-blind-placebo-controlled-ascending-dose-study
#10
Qian Chen, Chaoying Hu, Ye Liu, Yun Liu, Wei Wang, Hongchao Zheng, Lianchen Rong, Jingying Jia, Shixuan Sun, Chen Yu, Yan Mei Liu
Ulinastatin, is a broad-spectrum protease inhibitor purified from human urine, inhibits endogenous proteases such as trypsin, α-chymotrypsin, hyaluronidase, and plasmin. It is widely being used at increasingly higher doses for the treatment of acute or chronic pancreatitis, severe infection, and acute organ failure. We aimed to evaluate the safety and tolerability of high-dose ulinastatin in healthy volunteers in our single center, randomized, double-blind, placebo-controlled, single-dose escalation study...
2017: PloS One
https://www.readbyqxmd.com/read/28491013/peptides-with-6-aminohexanoic-acid-synthesis-and-evaluation-as-plasmin-inhibitors
#11
Maciej Purwin, Agnieszka Markowska, Irena Bruzgo, Tomasz Rusak, Arkadiusz Surażyński, Urszula Jaworowska, Krystyna Midura-Nowaczek
Fifteen new peptide derivatives of ɛ-aminocaproic acid (EACA) containing the known fragment -Ala-Phe-Lys- with an affinity for plasmin were synthesised in the present study. The synthesis was carried out a solid phase. The following compounds were synthesised: H-Phe-Lys-EACA-X, H-d-Ala-Phe-Lys-EACA-X, H-Ala-Phe-Lys-EACA-X, H-d-Ala-Phe-EACA-X and H-Ala-Phe-EACA-X, where X = OH, NH2 and NH-(CH2)5-NH2. All peptides, except for those containing the sequence H-Ala-Phe-EACA-X, displayed higher inhibitory activity against plasmin than EACA...
2017: International Journal of Peptide Research and Therapeutics
https://www.readbyqxmd.com/read/28486646/altered-preoperative-coagulation-and-fibrinolysis-are-associated-with-myocardial-injury-after-non-cardiac-surgery
#12
J Górka, K Polok, T Iwaniec, K Górka, A Wludarczyk, J Fronczek, P J Devereaux, J W Eikelboom, J Musial, W Szczeklik
Background: Myocardial injury after non-cardiac surgery (MINS), a complication with unclear pathogenesis, occurs within the first 30 days after surgery and worsens prognosis. Hypercoagulability induced by surgery might contribute to plaque rupture, with subsequent thrombosis and myocardial injury. This study assessed haemostatic markers before surgery and evaluated their association with MINS. Methods: This is a substudy of VISION, a prospective cohort study of perioperative cardiovascular events...
May 1, 2017: British Journal of Anaesthesia
https://www.readbyqxmd.com/read/28481998/minimally-invasive-heart-valve-surgery-influence-on-coagulation-and-inflammatory-response%C3%A2
#13
Domenico Paparella, Crescenzia Rotunno, Pietro Guida, Mattia Travascia, Micaela De Palo, Andrea Paradiso, Alessandro Carrozzo, Ruggero Rociola
OBJECTIVES: Minimally invasive valve surgery (MIVS) is associated with improved clinical outcome but longer cardiopulmonary bypass (CPB) time. The aim of the present study is to compare inflammatory and coagulation parameters in patients undergoing minimally invasive or standard valve surgery. METHODS: A prospective non-randomized study was performed enrolling 79 patients undergoing mitral (20 right mini-thoracotomy and 18 standard sternotomy) and aortic valve (20 mini-sternotomy and 21 standard sternotomy) procedures...
May 6, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/28474722/highly-selective-and-rapidly-activatable-fluorogenic-thrombin-sensors-and-application-in-human-lung-tissue
#14
Alicia Megia-Fernandez, Bethany Mills, Chesney Michels, Sunay V Chankeshwara, Kevin Dhaliwal, Mark Bradley
A library of FRET-based peptides were prepared and studied as Thrombin substrates. This identified probes that showed selective activation by Thrombin, low fluorescent background signals, stability to Factor Xa, matrix metalloproteases, and primary human inflammatory cell lysates and supernatant. These were selected for further optimization, creating a second generation of fluorogenic probes with improved solubility and Plasmin resistance. The optimised probe allowed the detection of Thrombin activity in ex vivo fibrotic human tissue...
May 23, 2017: Organic & Biomolecular Chemistry
https://www.readbyqxmd.com/read/28472123/inhibition-of-plasmin-mediated-tafi-activation-may-affect-development-but-not-progression-of-abdominal-aortic-aneurysms
#15
Katherine Bridge, Charlotte Revill, Fraser Macrae, Marc Bailey, Nadira Yuldasheva, Stephen Wheatcroft, Roger Butlin, Richard Foster, D Julian Scott, Ann Gils, Robert Ariens
OBJECTIVE: Thrombin-activatable fibrinolysis inhibitor (TAFI) reduces the breakdown of fibrin clots through its action as an indirect inhibitor of plasmin. Studies in TAFI-deficient mice have implicated a potential role for TAFI in Abdominal Aortic Aneurysm (AAA) disease. The role of TAFI inhibition on AAA formation in adult ApoE-/- mice is unknown. The aim of this paper was to investigate the effects of TAFI inhibition on AAA development and progression. METHODS: Using the Angiotensin II model of AAA, male ApoE-/- mice were infused with Angiotensin II 750ng/kg/min with or without a monoclonal antibody inhibitor of plasmin-mediated activation of TAFI, MA-TCK26D6, or a competitive small molecule inhibitor of TAFI, UK-396082...
2017: PloS One
https://www.readbyqxmd.com/read/28469640/tissue-type-plasminogen-activator-is-a-homeostatic-regulator-of-synaptic-function-in-the-central-nervous-system
#16
REVIEW
Valerie Jeanneret, Manuel Yepes
Membrane depolarization induces the release of the serine proteinase tissue-type plasminogen activator (tPA) from the presynaptic terminal of cerebral cortical neurons. Once in the synaptic cleft this tPA promotes the exocytosis and subsequent endocytic retrieval of glutamate-containing synaptic vesicles, and regulates the postsynaptic response to the presynaptic release of glutamate. Indeed, tPA has a bidirectional effect on the composition of the postsynaptic density (PSD) that does not require plasmin generation or the presynaptic release of glutamate, but varies according to the baseline level of neuronal activity...
March 2017: Neural Regeneration Research
https://www.readbyqxmd.com/read/28458391/iliac-vein-compression-syndrome-ivcs-an-under-recognized-risk-factor-for-left-sided-deep-venous-thrombosis-dvt-in-old-hip-fracture-patients
#17
Junfeng Liu, Pengcheng Liu, Kuo Xia, Liyang Chen, Xing Wu
BACKGROUND The aim of this study was to identify whether iliac vein compression syndrome (IVCS) is a risk factor for left-sided deep venous thrombosis (DVT) in hip fracture patients and the influence IVCS may have on the treatment of DVT. MATERIAL AND METHODS A retrospective study was carried out among 424 hip fracture patients admitted to our hospital from 2011 to 2016. Clinical data were analyzed, and all patients were classified into the DVT group and the non-DVT group based on plasmin D-Dimer concentration and results of Doppler ultrasound of the left lower limb...
May 1, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28443086/complete-molecular-and-immunoprotective-characterization-of-babesia-microti-enolase
#18
Xiangye Liu, Chen Zheng, Xiaoge Gao, Jiaxu Chen, Kuiyang Zheng
The apicomplexan Babesia microti is the primary causative agent of human babesiosis, one of the most broadly distributed tick-borne diseases worldwide. B. microti undergoes a complex lifecycle within both the mammalian host and the tick vector, and employs several different specific molecular mechanisms to enter host cells. Enolase, the key glycolytic enzyme in intracellular glucose metabolism, can also be expressed on the parasite's outer surface, binds to human plasminogen, and coordinates apicomplexan parasite invasion of host cells, however, it lacks sorting sequences or lipoprotein anchor sites...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28441661/defective-platelet-activation-and-bleeding-complications-upon-cholestasis-in-mice
#19
Nina Sarah Gowert, Meike Klier, Maria Reich, Friedrich Reusswig, Lili Donner, Verena Keitel, Dieter Häussinger, Margitta Elvers
BACKGROUND/AIMS: Platelets are essential mediators of hemostasis to avoid excessive blood loss. Cirrhosis and chronic liver diseases are characterized by alterations in hemostasis. Alterations in the secondary hemostasis have been well studied, while defects in primary hemostasis, especially the consequences of cholestatic liver disease on platelet function are not well defined. METHODS: After bile duct ligation (BDL) platelet activation and thrombus formation were analyzed in mice...
April 20, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28427074/enzymatic-vitreolysis-for-vitreomacular-traction-in-diabetic-retinopathy
#20
Stanislao Rizzo, Daniela Bacherini
Vitreomacular traction (VMT) is one of many possible factors involved in the etiology of diabetic macular edema (DME). Pharmacologic vitreoretinal separation is a potential alternative to vitrectomy for VMT in diabetic retinopathy. Small case series have been published on the use of enzymatic vitreolysis in tractional DME, and demonstrate that the enzymatic release of the posterior vitreous cortex is more likely following the injection of plasmin enzyme. Further prospective and randomized clinical trials are necessary to evaluate the clinical relevance of ocriplasmin for vitreomacular traction in diabetic retinopathy, and additional studies are needed to determine more accurately which patients might benefit most from this treatment and how often and at what concentration ocriplasmin should be administered...
2017: Developments in Ophthalmology
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