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https://www.readbyqxmd.com/read/28930985/visualizing-angiogenesis-by-multiphoton-microscopy-in-vivo-in-genetically-modified-3d-plga-nhap-scaffold-for-calvarial-critical-bone-defect-repair
#1
Jian Li, Holger Jahr, Wei Zheng, Pei-Gen Ren
The reconstruction of critically sized bone defects remains a serious clinical problem because of poor angiogenesis within tissue-engineered scaffolds during repair, which gives rise to a lack of sufficient blood supply and causes necrosis of the new tissues. Rapid vascularization is a vital prerequisite for new tissue survival and integration with existing host tissue. The de novo generation of vasculature in scaffolds is one of the most important steps in making bone regeneration more efficient, allowing repairing tissue to grow into a scaffold...
September 7, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28930589/procoagulant-activity-during-viral-infections
#2
Saravanan Subramaniam, Inge Scharrer
The abundance of evidence suggest that inflammation of immune and non-immune cells may lead to an imbalance of the pro- and anti-coagulant state during viral infections. During systemic infections, the endothelium plays a critical role in regulating hemostasis, and severe imbalances of endothelial function and activation can contribute to organ failure. Viral infections may elevate plasma levels of procoagulant markers such as TAT and D-dimer TF-positive MPs as well as von Willebrand factor (vWF). Although multiple clinical studies are showing the association of viral infection and increased prothrombotic risk, the pathological mechanisms have not been fully identified for most viral infections...
January 1, 2018: Frontiers in Bioscience (Landmark Edition)
https://www.readbyqxmd.com/read/28927148/association-of-abo-blood-groups-with-von-willebrand-factor-factor-viii-and-adamts-13-in-patients-with-lung-cancer
#3
Xia Liu, Xiaogang Chen, Jiezuan Yang, Renyong Guo
Coagulative and fibrinolytic disorders appear to be associated with the development of lung cancer. The aim of the present study was to determine plasma levels of von Willebrand factor (VWF) and a disintegrin and metalloproteinase with a thrombospondin type 1 motif 13 (ADAMTS-13), and factor VIII (FVIII) activity, in association with O and non-O blood groups in patients with lung cancer. Plasma levels of VWF and ADAMTS-13, and FVIII activity were measured in 115 patients with lung cancer and 98 healthy subjects...
September 2017: Oncology Letters
https://www.readbyqxmd.com/read/28926986/efficacy-of-octocog-alfa-advate-in-a-child-with-type-3-von-willebrand-disease-and-alloantibodies
#4
Gianluca Sottilotta, Francesca Luise, Elisabetta Massara, Vincenzo Oriana, Angela Piromalli
Von Willebrand disease (VWD) is the most frequent inherited bleeding disorder and is caused by either a quantitative and/or qualitative defect of the multimeric glycoprotein vonWillebrand factor (VWF).[...].
September 18, 2017: Journal of Clinical Medicine
https://www.readbyqxmd.com/read/28924539/genetic-polymorphisms-of-hemostatic-factors-and-thrombotic-risk-in-non-bcr-abl-myeloproliferative-neoplasms-a-pilot-study
#5
R Dambrauskienė, R Gerbutavičius, R Ugenskienė, R Jankauskaitė, A Savukaitytė, R Šimoliūnienė, M Rudžianskienė, R Gerbutavičienė, E Juozaitytė
The most important complications of Philadelphianegagive (non BCR-ABL) myeloproliferative neoplasms (MPNs) are vascular events. Our aim was to evaluate the effects of single nucleotide polymorphisms (SNPs), platelet glycoproteins (GPs) (Ia/IIa, Ibα, IIb/IIIa and VI), von Willebrand factor (vWF), coagulation factor VII (FVII), β-fibrinogen, and the risk of thrombosis in patients with non BCR-ABL MPNs at the Lithuanian University of Health Sciences. Kaunas, Lithuania. Genotyping was done for 108 patients. The TT genotype of the GP Ia/IIa c...
June 30, 2017: Balkan Journal of Medical Genetics: BJMG
https://www.readbyqxmd.com/read/28924049/specific-electrostatic-interactions-between-charged-amino-acid-residues-regulate-binding-of-von-willebrand-factor-to-blood-platelets
#6
Gianluca Interlandi, Olga Yakovenko, An-Yue Tu, Jeff Harris, Jennie Le, Junmei Chen, José A López, Wendy E Thomas
The plasma protein von Willebrand factor (VWF) is essential for hemostasis initiation at sites of vascular injury. The platelet binding A1 domain of VWF is connected to the VWF's N-terminally located D'D3 domain through a relatively unstructured amino acid sequence, called here the N-terminal linker. This region has previously been shown to inhibit the binding of VWF to the platelet surface receptor glycoprotein Ibα (GpIbα). However, the molecular mechanism underlying the inhibitory function of the N-terminal linker has not been elucidated...
September 18, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28920105/the-impact-of-von-willebrand-factor-on-factor-viii-memory-immune-responses
#7
Juan Chen, Jocelyn A Schroeder, Xiaofeng Luo, Qizhen Shi
Immune tolerance induction (ITI) with aggressive infusion of factor VIII (FVIII) is the current strategy used to eradicate FVIII inhibitors and restore normal FVIII pharmacokinetics in inhibitor patients. Whether the use of FVIII products containing von Willebrand factor (VWF) will affect the efficacy of ITI is still controversial. In this study, we explored the impact of VWF on FVIII memory immune responses in hemophilia A (HA) mice. A T-cell proliferation assay and cytokine profile analysis were used to study FVIII-primed CD4(+) T cells...
August 22, 2017: Blood Advances
https://www.readbyqxmd.com/read/28916584/novel-insights-into-the-clinical-phenotype-and-pathophysiology-underlying-low-vwf-levels
#8
Michelle Lavin, Sonia Aguila, Sonja Schneppenheim, Niall Dalton, Kenneth L Jones, Jamie M O'Sullivan, Niamh M O'Connell, Kevin Ryan, Barry White, Mary Byrne, Marie Rafferty, Mairead M Doyle, Margaret Nolan, Roger J S Preston, Ulrich Budde, Paula James, Jorge Di Paola, James S O'Donnell
Critical clinical questions remain unanswered regarding diagnosis and management of patients with Low VWF levels (30-50 IU/dL). To address these questions, the Low VWF Ireland Cohort (LoVIC) study investigated 126 patients registered with Low VWF. Interestingly, despite their marginally reduced plasma VWF levels, ISTH BAT and Condensed MCMDM-1 VWD scores both confirmed significant bleeding phenotypes in the majority of LoVIC patients. For example, among female patients with Low VWF, 77% had ISTH BAT scores ≥6...
September 15, 2017: Blood
https://www.readbyqxmd.com/read/28915312/dce-and-dw-mri-as-early-imaging-biomarkers-of-treatment-response-in-a-preclinical-model-of-triple-negative-breast-cancer
#9
Stephanie L Barnes, Anna G Sorace, Jennifer G Whisenant, J Oliver McIntyre, Hakmook Kang, Thomas E Yankeelov
This work evaluates quantitative dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) and diffusion-weighted MRI (DW-MRI) parameters as early biomarkers of response in a preclinical model of triple negative breast cancer (TNBC). The standard Tofts' model of DCE-MRI returns estimates of the volume transfer constant (K(trans) ) and the extravascular extracellular volume fraction (ve ). DW-MRI returns estimates of the apparent diffusion coefficient (ADC). Mice (n = 38) were injected subcutaneously with MDA-MB-231...
September 15, 2017: NMR in Biomedicine
https://www.readbyqxmd.com/read/28915230/albuminuria-and-endothelial-dysfunction-in-patients-with-non-diabetic-chronic-kidney-disease
#10
Meng-Jie Huang, Ri-Bao Wei, Jing Zhao, Ting-Yu Su, Qing-Ping Li, Xi Yang, Xiang-Mei Chen
BACKGROUND Albuminuria has been associated with cardiovascular events, but whether such an association can be explained by endothelial dysfunction is not fully understood. In this study, we examined the relationship between the urine albumin-to-creatinine ratio (UACR) and biomarkers of endothelial function in patients with chronic kidney disease (CKD). MATERIAL AND METHODS The cross-sectional associations of renal dysfunction and UACR with procoagulant and inflammatory factors were evaluated for 151 consecutive CKD (stage 3-5) patients...
September 15, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28912376/a-recombinant-human-adamts-13-first-in-human-study-evaluating-pharmacokinetics-safety-and-tolerability-in-cttp-patients
#11
Marie Scully, Paul Knöbl, Karim Kentouche, Lawrence Rice, Jerzy Windyga, Reinhard Schneppenheim, Johanna A Kremer Hovinga, Michiko Kajiwara, Yoshihiro Fujimura, Caterina Maggiore, Jennifer Doralt, Christopher Hibbard, Leah Martell, Bruce Ewenstein
Safety, tolerability and pharmacokinetics of recombinant ADAMTS-13 (rADAMTS-13; BAX 930; SHP655) were investigated in 15 patients diagnosed with severe congenital ADAMTS-13 deficiency (plasma ADAMTS-13 activity < 6%) in a prospective phase 1, first-in-human, multicenter dose escalation study. BAX 930 was well tolerated, no serious adverse events occurred, and no anti-ADAMTS-13 antibodies were observed. Following single dose administration of BAX 930 at 5, 20, or 40 U/kg body weight to adolescents and adults, there was approximate dose proportionality with respect to Cmax and AUC...
September 14, 2017: Blood
https://www.readbyqxmd.com/read/28910974/resveratrol-suppresses-p-selectin-psgl-1-and-vwf-through-sirt1-signaling-pathway
#12
Zhenkai Lou, Kaili Du, Tingting Wang, Xueling Zhao, Xingguo Li, Bing Wang
No abstract text is available yet for this article.
September 1, 2017: Acta Biochimica et Biophysica Sinica
https://www.readbyqxmd.com/read/28904675/von-willebrand-s-disease-case-report-and-review-of-literature
#13
Hanae Echahdi, Brahim El Hasbaoui, Mohamed El Khorassani, Aomar Agadr, Mohamed Khattab
Von Willebrand Disease (VWD) is the most common human inherited bleeding disorder due to a defect of Von Willebrand Factor (VWF), which a glycoprotein crucial for platelet adhesion to the subendothelium after vascular injury. VWD include quantitative defects of VWF, either partial (type 1 with VWF levels < 50 IU/dL) or virtually total (type 3 with undetectable VWF levels) and also qualitative defects of VWF (type 2 variants with discrepant antigenic and functional VWF levels). The most bleeding forms of VWD usually do not concern type 1 patients with the mildest VWF defects (VWF levels between 30 and 50IU/dL)...
2017: Pan African Medical Journal
https://www.readbyqxmd.com/read/28903379/extracorporeal-shock-wave-treatment-attenuated-left-ventricular-dysfunction-and-remodeling-in-mini-pig-with-cardiorenal-syndrome
#14
Jiunn-Jye Sheu, Hani E E Ali, Ben-Chung Cheng, Hsin-Ju Chiang, Pei-Hsun Sung, Kuan-Hung Chen, Chih-Chao Yang, Yen-Ta Chen, John Y Chiang, Pao-Yuan Lin, Sarah Chua, Han-Tan Chai, Sheng-Ying Chung, Cheuk-Kwan Sun, Hon-Kan Yip
This study tested the hypothesis that extracorporeal shock wave (ECSW) treatment can improve ischemia-induced left ventricular (LV) dysfunction in mini-pig with co-existing chronic kidney disease (CKD). LV ischemia in mini-pigs was induced by applying an ameroid constrictor over mid-left anterior descending artery (LAD), while model of CKD was established by right nephrectomy with partial ligation of left renal arterioles 2 weeks before LAD constriction. Thirty mini-pigs were randomly divided into group 1 (sham-control), group 2 (LV-ischemia), group 3 (LV-ischemia + CKD), Group 4 [LV-ischemia + ECSW (applied 1200 shots at 0...
August 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/28900904/lonoctocog-alfa-a-review-in-haemophilia-a
#15
Zaina T Al-Salama, Lesley J Scott
Lonoctocog alfa (rVIII-SingleChain; Afstyla(®)) is a novel single-chain recombinant factor VIII (FVIII) molecule, with a truncated B-domain and the heavy and light chains covalently linked to form a stable and homogenous drug that binds with high affinity to von Willebrand factor (VWF). Intravenous lonoctocog alfa is approved for the prophylaxis and treatment of bleeding in patients with haemophilia A in several countries worldwide. In two pivotal, multicentre trials, lonoctocog alfa was effective in the treatment of bleeding episodes and as prophylaxis, including for perioperative management in adults, adolescents and children...
September 12, 2017: Drugs
https://www.readbyqxmd.com/read/28900857/endovascular-biopsy-in-vivo-cerebral-aneurysm-endothelial-cell-sampling-and-gene-expression-analysis
#16
Daniel L Cooke, David B McCoy, Van V Halbach, Steven W Hetts, Matthew R Amans, Christopher F Dowd, Randall T Higashida, Devon Lawson, Jeffrey Nelson, Chih-Yang Wang, Helen Kim, Zena Werb, Charles McCulloch, Tomoki Hashimoto, Hua Su, Zhengda Sun
There is limited data describing endothelial cell (EC) gene expression between aneurysms and arteries partly because of risks associated with surgical tissue collection. Endovascular biopsy (EB) is a lower risk alternative to conventional surgical methods, though no such efforts have been attempted for aneurysms. We sought (1) to establish the feasibility of EB to isolate viable ECs by fluorescence-activated cell sorting (FACS), (2) to characterize the differences in gene expression by anatomic location and rupture status using single-cell qPCR, and (3) to demonstrate the utility of unsupervised clustering algorithms to identify cell subpopulations...
September 13, 2017: Translational Stroke Research
https://www.readbyqxmd.com/read/28900302/functional-dissection-of-hematopoietic-stem-cell-populations-with-a-stemness-monitoring-system-based-on-ns-gfp-transgene-expression
#17
Mohamed A E Ali, Kyoko Fuse, Yuko Tadokoro, Takayuki Hoshii, Masaya Ueno, Masahiko Kobayashi, Naho Nomura, Ha Thi Vu, Hui Peng, Ahmed M Hegazy, Masayoshi Masuko, Hirohito Sone, Fumio Arai, Atsushi Tajima, Atsushi Hirao
Hematopoietic stem cells (HSCs) in a steady state can be efficiently purified by selecting for a combination of several cell surface markers; however, such markers do not consistently reflect HSC activity. In this study, we successfully enriched HSCs with a unique stemness-monitoring system using a transgenic mouse in which green florescence protein (GFP) is driven by the promoter/enhancer region of the nucleostemin (NS) gene. We found that the phenotypically defined long-term (LT)-HSC population exhibited the highest level of NS-GFP intensity, whereas NS-GFP intensity was strongly downregulated during differentiation in vitro and in vivo...
September 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28899852/identification-of-extant-vertebrate-myxine-glutinosa-vwf-evolutionary-conservation-of-primary-hemostasis
#18
Marianne A Grant, David L Beeler, Katherine C Spokes, Junmei Chen, Harita Dharaneeswaran, Tracey E Sciuto, Ann M Dvorak, Gianluca Interlandi, José A Lopez, William C Aird
Hemostasis in vertebrates involves both a cellular and protein component. Previous studies in jawless vertebrates (cyclostomes) suggest that the protein response, which involves thrombin-catalyzed conversion of a soluble plasma protein, fibrinogen, into a polymeric fibrin clot, is conserved in all vertebrates. However, similar data are lacking for the cellular response, which in gnathostomes, is regulated by von Willebrand factor (VWF), a glycoprotein that mediates the adhesion of platelets to the subendothelial matrix of injured blood vessels...
September 12, 2017: Blood
https://www.readbyqxmd.com/read/28894574/decreased-activity-of-plasma-adamts13-are-related-to-enhanced-cytokinemia-and-endotoxemia-in-patients-with-acute-liver-failure
#19
Hiroaki Takaya, Hitoshi Yoshiji, Hideto Kawaratani, Kazuya Sakai, Masanori Matsumoto, Yoshihiro Fujimura, Hiroshi Fukui
Deficient ADAM metalloproteinase with thrombospondin type-1 motif, member 13 (ADAMTS13) activity (ADAMTS13:AC) results in the accumulation of unusually large von Willebrand factor multimers (UL-VWFM) and causes microcirculatory disturbances and multiple organ failure, while endotoxins trigger the activation of a coagulation cascade. The objective of the present study was to explore the role of ADAMTS13 in endotoxemia in patients with acute liver failure (ALF). Plasma concentrations of endotoxin and cytokines, including interleukin (IL)-6 and IL-8, and activity of the plasma ADAMTS13 inhibitor were determined, along with ADAMTS13:AC, the VWF antigen (VWF:Ag) and UL-VWFM, in 27 patients with acute hepatitis (AH), 11 patients with ALF, and 10 healthy controls...
September 2017: Biomedical Reports
https://www.readbyqxmd.com/read/28883275/successful-management-of-intraperitoneal-bleeding-with-platelet-apheresis-and-von-willebrand-factor-supplementation-in-a-patient-with-essential-thrombocythemia-and-acquired-von-willebrand-syndrome
#20
Toshimitsu Ueki, Kanako Takeshige, Masahiko Sumi, Mayumi Ueno, Naoaki Ichikawa, Hikaru Kobayashi
A 36-year-old woman with essential thrombocythemia (ET) was admitted to our hospital for acute lower abdominal pain. Given no family history of bleeding disorder, she was diagnosed with acquired von Willebrand syndrome. Despite having a medical history of venous thrombosis, she had never been treated for ET because of her preferences. On admission, CT scan revealed massive hemorrhage in the ascending colon with the leakage of a contrast agent. Furthermore, a delayed enhancement of fluid collection in the Douglas fossa followingcontrast CT indicated bloody ascites...
2017: [Rinshō Ketsueki] the Japanese Journal of Clinical Hematology
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