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https://www.readbyqxmd.com/read/28714856/use-of-human-aortic-extracellular-matrix-as-a-scaffold-for-construction-of-patient-specific-tissue-engineered-vascular-patch
#1
Liping Gao, Mingjun Du, Jingjing Lv, Sebastian Schmull, Ritai Huang, Jun Li
Abstract Synthetic or biologic materials are usually used to repair vascular malformation in congenital heart defects; however, non-autologous materials show both mismatch compliance and antigenicity, as well as a lack of recellularization on its surface. Here, we constructed a tissue-engineered vascular patch (TEVP) using decellularized extracellular matrix (ECM) scaffold obtained from excised human aorta during surgery, which was seeded with patient-derived bone marrow CD34-positive (CD34+) progenitor cells...
July 17, 2017: Biomedical Materials
https://www.readbyqxmd.com/read/28702926/the-stability-evaluation-of-mesenchymal-stem-cells-differentiation-toward-endothelial-cells-by-chemical-and-mechanical-stimulation
#2
Elham Hasanzadeh, Ghassem Amoabediny, Nooshin Haghighipour, Nasim Gholami, Javad Mohammadnejad, Shahrokh Shojaei, Nasim Salehi-Nik
Adipose-derived mesenchymal stem cells (ADSCs) are adult multipotent cells able to differentiate into several cell lineages. Vascular endothelial growth factor (VEGF) and the shear stress associated with blood flow are considered as the most important chemical and mechanical cues that play major roles in endothelial differentiation. However, the stability of endothelial-specific gene expression has not been completely addressed yet. ADSCs in passage 3 were cultured inside the tubular silicon tubes and then exposed to VEGF or shear stress produced in a perfusion bioreactor...
July 12, 2017: In Vitro Cellular & Developmental Biology. Animal
https://www.readbyqxmd.com/read/28693615/genome-analysis-of-clostridium-perfringens-isolates-from-healthy-and-necrotic-enteritis-infected-chickens-and-turkeys
#3
Troels Ronco, Marc Stegger, Kim Lee Ng, Berit Lilje, Ulrike Lyhs, Paal Skytt Andersen, Karl Pedersen
OBJECTIVE: Clostridium perfringens causes gastrointestinal diseases in both humans and domestic animals. Type A strains expressing the NetB toxin are the main cause of necrotic enteritis (NE) in chickens, which has remarkable impact on animal welfare and production economy in the international poultry industry. Three pathogenicity loci NELoc-1, -2 and -3 and a collagen adhesion gene cnaA have been found to be associated with NE in chickens, whereas the presence of these has not been investigated in diseased turkeys...
July 11, 2017: BMC Research Notes
https://www.readbyqxmd.com/read/28686347/epo-modified-mscs-can-inhibit-asthmatic-airway-remodeling-in-an-animal-model
#4
Xin-Peng Han, Fang-Qi Zhang, Xiang-Shu Tan, Liang Liu, Wen-Xian Ma, Hai-Feng Ou-Yang, Chang-Gui Wu
OBJECTIVE: There was no effective measures can be obtained at present to reverse or prevent airway remodeling. We investigated the therapeutic effect of Erythropoietin (EPO) gene modified mesenchymal stem cells (MSCs) on asthmatic airway remodeling and the possible underlied molecular mechanisms. METHODS: EPO gene was transfected into MSCs via lentivirus vector. The transfected cells (EPO-MSCs) were identi?ed by ?ow cytometry and the EPO secreting function was detected by PCR and western blot...
July 7, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28662310/thrombotic-thrombocytopenic-purpura-pathogenesis-diagnosis-and-potential-novel-therapeutics
#5
REVIEW
Manish Saha, Jenny K McDaniel, X Long Zheng
Thrombotic thrombocytopenic purpura (TTP), a potentially fatal clinical syndrome, is primarily caused by autoantibodies against the von Willebrand factor (VWF)-cleaving metalloprotease ADAMTS13. In general, severe deficiency of plasma ADAMTS13 activity (<10 IU/dL) with or without detectable inhibitory autoantibodies against ADAMTS13 supports the diagnosis of TTP if a patient presents with thrombocytopenia and microangiopathic hemolytic anemia (i.e. schistocytes, elevated serum lactate dehydrogenase, decreased hemoglobin and haptoglobin) without other known etiologies that cause thrombotic microangiopathy (TMA)...
June 29, 2017: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/28544236/clinical-and-laboratory-phenotype-variability-in-type-2m-von-willebrand-disease
#6
A L Doruelo, S L Haberichter, P A Christopherson, L N Boggio, S Gupta, S R Lentz, A D Shapiro, R R Montgomery, V H Flood
Essentials The pathophysiology of type 2M von Willebrand disease (VWD) is poorly understood. Sequence variations in type 2M VWD subjects were characterized. A high degree of clinical and laboratory variability exists within type 2M VWD variants. Some type 2M variants may share features of type 2A VWD. SUMMARY: Background von Willebrand factor (VWF) is a multimeric coagulation factor that tethers platelets to injured subendothelium. Type 2M von Willebrand disease (VWD) is characterized by a qualitative defect in VWF with preserved multimer distribution...
May 20, 2017: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/28527913/von-willebrand-factor-deficiency-reduces-liver-fibrosis-in-mice
#7
Nikita Joshi, Anna K Kopec, Jessica L Ray, Holly Cline-Fedewa, Dafna J Groeneveld, Ton Lisman, James P Luyendyk
Liver diseases are associated with complex changes in the hemostatic system and elevated levels of the platelet-adhesive protein Von Willebrand factor (VWF) are reported in patients with acute and chronic liver damage. Although elevated levels of VWF are associated with fibrosis in the general population, the role of VWF in acute and chronic liver injury has not been examined in depth in experimental settings. We tested the hypothesis that VWF deficiency inhibits experimental liver injury and fibrosis. Wild-type (WT) and VWF-deficient mice were challenged with carbon tetrachloride (CCl4) and the impact of VWF deficiency on acute liver injury and chronic liver fibrosis was determined...
August 1, 2017: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/28503498/evaluation-of-energy-balance-on-human-telomerase-reverse-transcriptase-htert-alternative-splicing-by-semi-quantitative-rt-pcr-in-human-umbilical-vein-endothelial-cells
#8
Mohaddeseh Behjati, Mohammad Hashemi, Mohammad Kazemi, Mansoor Salehi, Shaghayegh Haghjooy Javanmard
BACKGROUND: Decreased high-energy phosphate level is involved in endothelial cell injury and dysfunction. Reduced telomerase activity in endothelial cells in parallel with reduced energy levels might be due to altered direction of alternative splicing machine as a complication of depleted energy during the process of atherosclerosis. MATERIALS AND METHODS: Isolated human umbilical vein endothelial cells (HUVECs) were treated for 24 hours by oligomycine (OM) and 2-deoxy glucose (2-DG)...
2017: Advanced Biomedical Research
https://www.readbyqxmd.com/read/28495826/genetic-drivers-of-von-willebrand-factor-levels-in-an-ischemic-stroke-population-and-association-with-risk-for-recurrent-stroke
#9
RANDOMIZED CONTROLLED TRIAL
Stephen R Williams, Fang-Chi Hsu, Keith L Keene, Wei-Min Chen, Godfrey Dzhivhuho, Joe L Rowles, Andrew M Southerland, Karen L Furie, Stephen S Rich, Bradford B Worrall, Michèle M Sale
BACKGROUND AND PURPOSE: von Willebrand factor (vWF) plays an important role in thrombus formation during cerebrovascular damage. We sought to investigate the potential role of circulating vWF in recurrent cerebrovascular events and identify genetic contributors to variation in vWF level in an ischemic stroke population. METHODS: We analyzed the effect of circulating vWF on risk of recurrent stroke using survival models in the VISP trial (Vitamin Intervention for Stroke Prevention) and the use of vWF in reclassification over traditional factors...
June 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/28456355/potential-mechanisms-of-vascular-thrombosis-after-microwave-ablation-in-an%C3%A2-in%C3%A2-vivo-liver
#10
Jason Chiang, Kwang Nickel, Randall J Kimple, Christopher L Brace
PURPOSE: To evaluate potential biologic and thermal mechanisms of the observed differences in thrombosis rates between hepatic vessels during microwave (MW) ablation procedures. MATERIALS AND METHODS: MW ablation antennae were placed in single liver lobes of 2 in vivo porcine liver models (n = 3 in each animal; N = 6 total) in the proximity of a large (> 5 mm) portal vein (PV) and hepatic veins (HVs). Each ablation was performed with 100 W for 5 minutes. Conventional ultrasound imaging and intravascular temperature probes were used to evaluate vessel patency and temperature changes during the ablation procedure...
July 2017: Journal of Vascular and Interventional Radiology: JVIR
https://www.readbyqxmd.com/read/28453889/discrepant-platelet-and-plasma-von-willebrand-factor-in-von-willebrand-disease-patients-with-p-pro2808leufs-24
#11
M L Bowman, F G Pluthero, A Tuttle, L Casey, L Li, H Christensen, K S Robinson, D Lillicrap, W H A Kahr, P James
Essentials von Willebrand factor (VWF) is synthesized in endothelial cells and platelet precursors. Type 3 patients with Pro2808Leufs*24 have lower bleeding scores than other type 3s. The Pro2808Leufs*24 variant was examined in patient platelets and endothelial cells. Type 3s with this variant contain releaseable VWF, possibly reducing bleeding. SUMMARY: Background A novel variant, p.Pro2808Leufs*24, in the von Willebrand factor (VWF) gene was previously identified in the Canadian von Willebrand disease (VWD) patient population...
April 28, 2017: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/28446313/-effect-of-agkistrodon-acutus-venom-pca-on-huvec-activity
#12
Jin-Feng Sang, Gen-Bao Zhang, Shu-Yan Zhou, Na Ji
OBJECTIVE: To investigate the effects of Agkistrodon acutus venom protein C activator(PCA) on ultrastructure of human umbilical vein endothelial cells(HUVEC), and the levels of tissue factor(TF), vascular von Willebrand factor (vWF) and endothelin-1 secreted by HUVEC and to clarify the anti-thrombotic mechanism of PCA. METHODS: The experiments were divided into control group(DMEM), LPS group (LPS 0.1 µg/ml), PCA group(PCA 1 µg/ml) and PCA+LPS group (1 µg/ml PCA+ 0...
April 2017: Zhongguo Shi Yan Xue Ye Xue za Zhi
https://www.readbyqxmd.com/read/28444814/chronic-antibody-mediated-rejection-in-nonhuman-primate-renal-allografts-validation-of-human-histological-and-molecular-phenotypes
#13
B A Adam, R N Smith, I A Rosales, M Matsunami, B Afzali, T Oura, A B Cosimi, T Kawai, R B Colvin, M Mengel
Molecular testing represents a promising adjunct for the diagnosis of antibody-mediated rejection (AMR). Here, we apply a novel gene expression platform in sequential formalin-fixed paraffin-embedded samples from nonhuman primate (NHP) renal transplants. We analyzed 34 previously described gene transcripts related to AMR in humans in 197 archival NHP samples, including 102 from recipients that developed chronic AMR, 80 from recipients without AMR, and 15 normal native nephrectomies. Three endothelial genes (VWF, DARC, and CAV1), derived from 10-fold cross-validation receiver operating characteristic curve analysis, demonstrated excellent discrimination between AMR and non-AMR samples (area under the curve = 0...
April 26, 2017: American Journal of Transplantation
https://www.readbyqxmd.com/read/28434170/establishment-and-characterization-of-novel-epithelial-like-cell-lines-derived-from-human-periodontal-ligament-tissue-in-vitro
#14
Kallapat Tansriratanawong, Hiroshi Ishikawa, Junko Toyomura, Soh Sato
In this study, novel human-derived epithelial-like cells (hEPLCs) lines were established from periodontal ligament (PDL) tissues, which were composed of a variety of cell types and exhibited complex cellular activities. To elucidate the putative features distinguishing these from epithelial rest of Malassez (ERM), we characterized hEPLCs based on cell lineage markers and tight junction protein expression. The aim of this study was, therefore, to establish and characterize hEPLCs lines from PDL tissues. The hEPLCs were isolated from PDL of third molar teeth...
April 22, 2017: Human Cell
https://www.readbyqxmd.com/read/28414763/enhanced-offspring-predisposition-to-steatohepatitis-with-maternal-high-fat-diet-is-associated-with-epigenetic-and-microbiome-alterations
#15
Umesh D Wankhade, Ying Zhong, Ping Kang, Maria Alfaro, Sree V Chintapalli, Keshari M Thakali, Kartik Shankar
OBJECTIVE: Non-alcoholic fatty liver disease (NAFLD) is an important co-morbidity associated with obesity and a precursor to steatohepatitis. However, the contributions of gestational and early life influences on development of NAFLD and NASH remain poorly appreciated. METHODS: Two independent studies were performed to examine whether maternal over-nutrition via exposure to high fat diet (HFD) leads to exacerbated hepatic responses to post-natal HFD and methionine choline deficient (MCD) diets in the offspring...
2017: PloS One
https://www.readbyqxmd.com/read/28393518/enhancing-vascularization-through-the-controlled-release-of-platelet-derived-growth-factor-bb
#16
Silvia Minardi, Laura Pandolfi, Francesca Taraballi, Xin Wang, Enrica De Rosa, Zachary D Mills, Xuewu Liu, Mauro Ferrari, Ennio Tasciotti
Using delivery systems to control the in vivo release of growth factors (GFs) for tissue engineering applications is extremely desirable as the clinical use of GFs is limited by their fast in vivo turnover. Hence, the development of effective platforms that are able to finely control the release of GFs in vivo remains a challenge. Herein, we investigated the ability of multiscale microspheres, composed by a nanostructured silicon multistage vector (MSV) core and a poly(dl-lactide-co-glycolide) acid (PLGA) forming outer shell (PLGA-MSV), to release functional platelet-derived growth factor-BB (PDGF-BB) to induce in vivo localized neovascularization...
May 3, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28377053/identification-of-transcription-factors-that-may-reprogram-lung-adenocarcinoma
#17
Chenglin Liu, Yu-Hang Zhang, Tao Huang, Yudong Cai
BACKGROUND: Lung adenocarcinoma is one of most threatening disease to human health. Although many efforts have been devoted to its genetic study, few researches have been focused on the transcription factors which regulate tumor initiation and progression by affecting multiple downstream gene transcription. It is proved that proper transcription factors may mediate the direct reprogramming of cancer cells, and reverse the tumorigenesis on the epigenetic and transcription levels. METHODS: In this paper, a computational method is proposed to identify the core transcription factors that can regulate as many as possible lung adenocarcinoma associated genes with as little as possible redundancy...
April 1, 2017: Artificial Intelligence in Medicine
https://www.readbyqxmd.com/read/28362648/abnormal-angiogenesis-in-blood-outgrowth-endothelial-cells-derived-from-von-willebrand-disease-patients
#18
Soundarya N Selvam, Lara J Casey, Mackenzie L Bowman, Lindsey G Hawke, Avery J Longmore, Jeffrey Mewburn, Mark L Ormiston, Stephen L Archer, Donald H Maurice, Paula James
Bleeding associated with angiodysplasia is a common, often intractable complication in patients with von Willebrand disease (VWD). von Willebrand factor (VWF), the protein deficient or defective in VWD, is a negative regulator of angiogenesis, which may explain the pathologic blood vessel growth in VWD. This study explores the normal range of angiogenesis in blood outgrowth endothelial cells (BOECs) derived from healthy donors and compares this to angiogenesis in BOECs from VWD patients of all types and subtypes...
March 30, 2017: Blood Coagulation & Fibrinolysis: An International Journal in Haemostasis and Thrombosis
https://www.readbyqxmd.com/read/28348515/transcriptome-analysis-of-hypothalamic-gene-expression-during-daily-torpor-in-djungarian-hamsters-phodopus-sungorus
#19
Ceyda Cubuk, Julia Kemmling, Andrej Fabrizius, Annika Herwig
Animals living at high or temperate latitudes are challenged by extensive changes in environmental conditions over seasons. Djungarian hamsters (Phodopus sungorus) are able to cope with extremely cold ambient temperatures and food scarcity in winter by expressing spontaneous daily torpor. Daily torpor is a circadian controlled voluntary reduction of metabolism that can reduce energy expenditure by up to 65% when used frequently. In the past decades it has become more and more apparent, that the hypothalamus is likely to play a key role in regulating induction and maintenance of daily torpor, but the molecular signals, which lead to the initiation of daily torpor, are still unknown...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28229819/dabigatran-aggravates-topoisomerase-i-peptide-loaded-dendritic-cells-induced-lung-and-skin-fibrosis
#20
Heena Mehta, Shunya Mashiko, Philippe-Olivier Goulet, Jade Desjardins, Gemma Pérez, Martial Koenig, Jean-Luc Senécal, Marika Sarfati
OBJECTIVES: Dysregulated coagulation cascade has been implicated in development of fibrosis in systemic sclerosis (SSc). Thrombin, a key mediator of the coagulation pathway, has both proinflammatory and procoagulant properties. Here, we evaluated the efficacy of oral dabigatran, a direct thrombin inhibitor, on topoisomerase I dendritic cells (TOPOIA DCs)-induced lung and skin fibrosis, an experimental model of SSc. METHODS: Mice were repeatedly immunized with TOPOIA DCs...
February 8, 2017: Clinical and Experimental Rheumatology
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