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https://www.readbyqxmd.com/read/28228483/new-concepts-and-mechanisms-of-platelet-activation-signaling
#1
REVIEW
Brian Estevez, Xiaoping Du
Upon blood vessel injury, platelets are exposed to adhesive proteins in the vascular wall and soluble agonists, which initiate platelet activation, leading to formation of hemostatic thrombi. Pathological activation of platelets can induce occlusive thrombosis, resulting in ischemic events such as heart attack and stroke, which are leading causes of death globally. Platelet activation requires intracellular signal transduction initiated by platelet receptors for adhesion proteins and soluble agonists. Whereas many platelet activation signaling pathways have been established for many years, significant recent progress reveals much more complex and sophisticated signaling and amplification networks...
March 2017: Physiology
https://www.readbyqxmd.com/read/28226350/-value-of-endoscopy-application-in-the-management-of-complications-after-radical-gastrectomy-for-gastric-cancer
#2
Yiqun Zhang, Pinghong Zhou
Endoscopy plays an important role in the diagnosis and treatment of postoperative complications of gastric cancer. Endoscopic intervention can avoid the second operation and has attracted wide attention. Early gastric anastomotic bleeding after gastrectomy is the most common. With the development of technology, emergency endoscopy and endoscopic hemostasis provide a new treatment approach. According to the specific circumstances, endoscopists can choose metal clamp to stop bleeding, electrocoagulation hemostasis, local injection of epinephrine or sclerotherapy agents, and spraying specific hemostatic agents...
February 25, 2017: Zhonghua Wei Chang Wai Ke za Zhi, Chinese Journal of Gastrointestinal Surgery
https://www.readbyqxmd.com/read/28225638/laparoscopic-resection-of-pancreatic-tumors-in-children-results-of-a-multicentric-survey
#3
Ciro Esposito, Pascal De Lagausie, Maria Escolino, Amulya Saxena, George W Holcomb, Alessandro Settimi, Francois Becmeur, David van der Zee
AIM: This study aimed to report the results of a multicentric survey about laparoscopic treatment of pancreatic tumors in children. MATERIALS AND METHODS: The data of patients operated using minimally invasive surgery (MIS) for a pancreatic tumor in 5 International centers of Pediatric Surgery in the last 5 years were retrospectively reviewed. We recorded data relating to the clinical presentation, diagnostic evaluation, surgical technique, and outcome. RESULTS: Fifteen patients (average age 2...
February 22, 2017: Journal of Laparoendoscopic & Advanced Surgical Techniques. Part A
https://www.readbyqxmd.com/read/28223937/orthostatic-challenge-shifts-the-hemostatic-system-of-patients-recovered-from-stroke-toward-hypercoagulability
#4
Gerhard Cvirn, Markus Kneihsl, Christine Rossmann, Margret Paar, Thomas Gattringer, Axel Schlagenhauf, Bettina Leschnik, Martin Koestenberger, Erwin Tafeit, Gilbert Reibnegger, Irhad Trozic, Andreas Rössler, Franz Fazekas, Nandu Goswami
Aims: The objective of our study was to assess the effects of orthostatic challenge on the coagulation system in patients with a history of thromboembolic events and to assess how they compared with age-matched healthy controls. Methods: Twenty-two patients with histories of ischemic stroke and 22 healthy age-matched controls performed a sit-to-stand test. Blood was collected prior to- and at the end of- standing in the upright position for 6 min. Hemostatic profiling was performed by determining thrombelastometry and calibrated automated thrombogram values, indices of thrombin generation, standard coagulation times, markers of endothelial activation, plasma levels of coagulation factors and copeptin, and hematocrit...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28223734/early-thrombomodulin-%C3%AE-administration-outcome-for-acute-disseminated-intravascular-coagulopathy-in-gastrointestinal-surgery
#5
Hirotaka Konishi, Kazuma Okamoto, Katsutoshi Shoda, Tomohiro Arita, Toshiyuki Kosuga, Ryo Morimura, Shuhei Komatsu, Yasutoshi Murayama, Atsushi Shiozaki, Yoshiaki Kuriu, Hisashi Ikoma, Masayoshi Nakanishi, Daisuke Ichikawa, Hitoshi Fujiwara, Eigo Otsuji
AIM: To investigate the efficacy of thrombomodulin (TM)-α for treatment of disseminated intravascular coagulopathy (DIC) in the field of gastrointestinal surgery. METHODS: Thirty-six peri-operative DIC patients in the field of gastrointestinal surgery who were treated with TM-α were retrospectively investigated. The relationships between patient demographics and the efficacy of TM-α were examined. Analysis of survival at 28 d was also performed on some parameters by means of the Kaplan-Meier method...
February 7, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28223279/distinct-contributions-of-complement-factors-to-platelet-activation-and-fibrin-formation-in-venous-thrombus-development
#6
Saravanan Subramaniam, Kerstin Jurk, Lukas Hobohm, Sven Jäckel, Mona Saffarzadeh, Kathrin Schwierczek, Philip Wenzel, Florian Langer, Christoph Reinhardt, Wolfram Ruf
Expanding evidence indicates multiple interactions between the hemostatic system and innate immunity and the coagulation and complement cascades. Here we show in a tissue factor (TF)-dependent model of flow restriction-induced venous thrombosis that complement factors (C) make distinct contributions to platelet activation and fibrin deposition. C3-deficiency causes prolonged bleeding, reduced thrombus incidence, thrombus size, fibrin and platelet deposition in the ligated inferior vena cava, and diminished platelet activation in vitro...
February 21, 2017: Blood
https://www.readbyqxmd.com/read/28222056/physical-activity-sedentary-behavior-and-inflammatory-and-hemostatic-markers-in-men
#7
Tessa J Parsons, Claudio Sartini, Paul Welsh, Naveed Sattar, Sarah Ash, Lucy T Lennon, S Goya Wannamethee, I-Min Lee, Peter H Whincup, Barbara J Jefferis
PURPOSE: This study aimed to determine whether higher levels of physical activity (PA) and less sedentary behavior (SB) are associated with less inflammation, indicated by inflammatory and hemostatic biomarkers, in older men. METHODS: A cross-sectional study of 1139 men, from the British Regional Heart Study (mean ± SD age = 78 ± 5 yr), and longitudinal analyses of 490 men with two PA measures 1 yr apart were used in this study. Single fasting venous blood samples were analyzed for several biomarkers...
March 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28219577/method-of-hemorrhage-control-from-the-aorta-after-repair-of-a-dissected-aortic-aneurysm
#8
Joseph Galea, Alexander Manché
Patients with Marfan syndrome and presenting with acute aortic dissection have fragile aorta, causing bleeding problems in the anastomosis between the graft and the aorta. Hemostatic impairment following circulatory arrest and prolonged cardiopulmonary bypass contribute to these problems. We describe a technique to control persistent bleeding from the anastomosis in the aortopulmonary recess using two kissing inflated balloons at the tip of two Foley catheters to tamponade the bleeding sites.
March 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28219084/diagnosis-and-treatment-of-hyperfibrinolysis-in-trauma-a-european-perspective
#9
Lewis S Gall, Karim Brohi, Ross A Davenport
Fibrinolysis activation occurs almost universally after severe trauma. Systemic hyperfibrinolysis is a key component of acute traumatic coagulopathy and associated with poor clinical outcomes, although controversy exists over optimal treatment strategies. The mechanistic drivers and dynamics of fibrinolytic activation in response to injury and trauma resuscitation are currently unclear. Furthermore, therapeutic triggers are compounded by the lack of a sensitive and rapid diagnostic tool, with discrepancy between hyperfibrinolysis diagnosed by viscoelastic hemostatic assays versus biomarkers for fibrinolysis...
February 20, 2017: Seminars in Thrombosis and Hemostasis
https://www.readbyqxmd.com/read/28218620/endothelial-antigen-assembly-leads-to-thrombotic-complications-in-heparin-induced-thrombocytopenia
#10
Vincent Hayes, Ian Johnston, Gowthami M Arepally, Steven E McKenzie, Douglas B Cines, Lubica Rauova, Mortimer Poncz
Heparin-induced thrombocytopenia (HIT) is a prothrombotic disorder initiated by antibodies against complexes between human platelet factor 4 (hPF4) and heparin. A better understanding of the events that initiate the prothrombotic state may improve approaches to antithrombotic management. Here, we visualized thrombus formation in an in vivo murine model and an endothelialized microfluidic system that simulate the pathogenesis of HIT. hPF4 released from platelets predominantly bound to peri-injury endothelium and formed HIT antigenic complexes that were dissociated by heparin...
February 20, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28217677/delayed-hemorrhage-effect-of-local-anesthesia-with-epinephrine-in-the-loop-electrosurgical-excisional-procedure
#11
Yong Jae Lee, Yunjin Park, In Ok Lee, Jung Won Yoon, Jung Yoon Lee, Sang Wun Kim, Sunghoon Kim, Young Tae Kim, Eun Ji Nam
OBJECTIVE: The aim of this study was to investigate factors preventing delayed hemorrhage after the loop electrosurgical excisional procedure (LEEP). METHODS: Medical records of patients who underwent LEEP at one university affiliated hospital from October 2013 to January 2015 were reviewed. Patients with or without delayed hemorrhage were classified. LEEP was performed either in an operating room under general anesthesia or in a procedure room with local anesthesia in the outpatient clinic...
January 2017: Obstetrics & Gynecology Science
https://www.readbyqxmd.com/read/28215042/platelet-mediated-modulation-of-fibrinolysis
#12
Claire S Whyte, Joanne L Mitchell, Nicola J Mutch
Platelets are crucial to the hemostatic response. Their role in coagulation is well documented and they have been considered for some time to promote resistance of thrombi to fibrinolysis. Platelets confer resistance to lysis by promoting clot retraction of the immediate fibrin network and through release of plasminogen activator inhibitor-1 from their α-granules. However, recent developments in the field indicate that the role of platelets in fibrinolysis is much more diverse. Indeed, novel studies suggest that platelets form different subpopulations upon activation that play varied roles in regulating hemostasis...
February 19, 2017: Seminars in Thrombosis and Hemostasis
https://www.readbyqxmd.com/read/28208512/re-omission-of-hemostatic-agents-during-robotic-partial-nephrectomy-does-not-increase-postoperative-bleeding-risk
#13
Jeffrey A Cadeddu
No abstract text is available yet for this article.
March 2017: Journal of Urology
https://www.readbyqxmd.com/read/28207269/a-biocompatible-injectable-hydrogel-with-potent-wound-healing-and-antibacterial-properties
#14
Jiaul Hoque, Relekar G Prakash, Krishnamoorthy Paramanandham, Bibek R Shome, Jayanta Haldar
Two component injectable hydrogels that cross-link in-situ have been used as non-invasive wound-filling devices, i.e., sealants. These materials carry a variety of functions at the wound sites such as seal leaks, cease unwanted bleeding, bind tissues together, and assist in wound healing process. However, commonly used sealants typically lack antibacterial properties. Since bacterial infection at the wound site is very common, bioadhesive materials with intrinsic antibacterial properties are urgently required...
February 16, 2017: Molecular Pharmaceutics
https://www.readbyqxmd.com/read/28203498/thunderbolt-technique-novel-hemostatic-technique-for-hemorrhage-related-to-venous-infusion-catheter-drains
#15
Ryohei Ishiura, Akiko Matsumoto, Masataka Shiozaki, Hiroki Miyashita, Masayuki Sawaizumi
No abstract text is available yet for this article.
January 2017: Plastic and Reconstructive Surgery. Global Open
https://www.readbyqxmd.com/read/28203003/-bleeding-control-of-periodontal-mechanical-therapy-for-patients-taking-aspirin
#16
F Ding, Y L Lyu, W Xuan, D Y Liu, X Q Duan, X Han
OBJECTIVE: To investigate the feasibility of periodontal mechanical therapy for chronic periodontitis and coronary heart disease patients with low dose of aspirin. METHODS: Sixty nine chronic periodontitis patients with coronary heart disease were randomly selected as the experimental group (medication group, group A), the control group (withdrawal group, group B) including 20 chronic periodontitis patients with coronary artery disease, stopping the drug for one week and another control group with 50 chronic periodontitis patients (group C)...
February 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/28197892/the-effect-of-acute-aerobic-exercise-on-hemostasis-in-obstructive-sleep-apnea
#17
Ryan A Martin, Courtney Strosnider, Gabrielle Giersch, Christopher J Womack, Trent A Hargens
PURPOSE: Individuals with obstructive sleep apnea (OSA) have an altered hemostatic balance; however, the exercise response is less described. The purpose of this study is to determine the hemostatic response after acute aerobic exercise in obstructive sleep apnea. METHODS: Eighteen males (nine OSA vs. nine controls) were recruited from the university and local community. Individuals with evidence of cardiovascular, pulmonary, or metabolic disease were excluded. An apnea-hypopnea index (AHI) of >5 was a criterion for OSA...
February 14, 2017: Sleep & Breathing, Schlaf & Atmung
https://www.readbyqxmd.com/read/28197224/a-foreign-body-reaction-to-surgicel-%C3%A2-in-a-lymph-node-diagnosed-by-endobronchial-ultrasound-guided-transbronchial-needle-aspiration
#18
Diana Badenes, Lara Pijuan, Víctor Curull, Albert Sánchez-Font
Surgicel(®) (Ethicon, North Ryde, NSW, Australia) is an absorbable sheet of oxidized cellulose polyanhydroglucuronic acid polymer used as an hemostatic in cardiovascular and thoracic surgery. In some cases, the retained material may cause foreign body granulomatous reactions and simulate tumor recurrence, an abscess, an hematoma, or an infection. We report the case of a 55-year-old patient who was operated of a lung adenocarcinoma. In the thoracic computed tomography scan 1 year after the surgery, a right paratracheal lymph node was detected, so endobronchial ultrasound-guided transbronchial needle aspiration (EBUS-TBNA) was performed suspecting recurrence of the tumor...
January 2017: Annals of Thoracic Medicine
https://www.readbyqxmd.com/read/28195889/a-biodegradable-hemostatic-gelatin-polycaprolactone-composite-for-surgical-hemostasis
#19
Niann-Tzyy Dai, Keng-Yen Fu, Pai-Shan Hsieh, Yu-Min Hung, Yun-Lung Fang, Nien-Chi Huang, Tzu-Wei Lu, Lien-Guo Dai, Shyi-Gen Chen, Tim-Mo Chen
Massive bleeding is the leading cause of battlefield-related deaths and the second leading cause of deaths in civilian trauma centers. One of the challenges of managing severe wounds is the need to promote hemostasis as quickly as possible, which can be achieved by using hemostatic dressings. In this study, we fabricated 2 kinds of gelatin/polycaprolactone composites with 2 ratios of gelatin/polycaprolactone, 1:1 and 2:1 (GP11 and GP21, respectively). Scanning electron microscopy revealed that the GP11 composite exhibited rougher and more porous structure than the GP21 composite did...
February 14, 2017: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/28190865/late-onset-neutropenia-after-rituximab-therapy-in-patients-with-autoimmune-thrombotic-and-hemostatic-disorders-a-single-center-analysis
#20
Yoshiyuki Ogawa, Kunio Yanagisawa, Takuma Ishizaki, Hiroaki Shimizu, Takeki Mitsui, Akitada Ichinose, Yoshihisa Nojima, Hiroshi Handa
Autoimmune thrombotic and hemostatic disorders, caused by autoantibodies against various factors regulating thrombosis and hemostasis, are rare. Rituximab (RTX) is on occasion used for treating these disorders. Late-onset neutropenia (LON) has been described as a side effect of RTX treatment for patients with hemato-oncological and/or rheumatological diseases but not for those with autoimmune thrombotic and hemostatic disorders. Eleven patients with autoimmune thrombotic and hemostatic disorders received RTX in our institution...
2017: [Rinshō Ketsueki] the Japanese Journal of Clinical Hematology
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