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https://www.readbyqxmd.com/read/29031164/productive-replication-of-avian-influenza-viruses-in-chicken-endothelial-cells-is-determined-by-hemagglutinin-cleavability-and-is-related-to-innate-immune-escape
#1
Adrien Lion, Mathilde Richard, Evelyne Esnault, Emmanuel Kut, Denis Soubieux, Vanaïque Guillory, Mélody Germond, Caroline Blondeau, Rodrigo Guabiraba, Kirsty R Short, Daniel Marc, Pascale Quéré, Sascha Trapp
Endotheliotropism is a hallmark of gallinaceous poultry infections with highly pathogenic avian influenza (HPAI) viruses and a feature that distinguishes HPAI from low pathogenic avian influenza (LPAI) viruses. Here, we used chicken aortic endothelial cells (chAEC) as a novel in vitro infection model to assess the susceptibility, permissiveness, and host response of chicken endothelial cells (EC) to infections with avian influenza (AI) viruses. Our data show that productive replication of AI viruses in chAEC is critically determined by hemagglutinin cleavability, and is thus an exclusive trait of HPAI viruses...
October 11, 2017: Virology
https://www.readbyqxmd.com/read/29031103/kaposi-s-sarcoma-herpesvirus-induced-endothelial-cell-reprogramming-supports-viral-persistence-and-contributes-to-kaposi-s-sarcoma-tumorigenesis
#2
REVIEW
Silvia Gramolelli, Päivi M Ojala
Kaposi's sarcoma (KS) is an endothelial tumor causally linked to Kaposi's sarcoma herpesvirus (KSHV) infection. At early stages of KS, inflammation and aberrant neoangiogenesis are predominant, while at late stages the disease is characterized by the proliferation of KSHV-infected spindle cells (SC). Since KSHV infection modifies the endothelial cell (EC) identity, the origin of SCs remains elusive. Yet, pieces of evidence indicate the lymphatic origin. KSHV-infected ECs display increased proliferative, angiogenic and migratory capacities which account for KS oncogenesis...
October 11, 2017: Current Opinion in Virology
https://www.readbyqxmd.com/read/29029126/hyalomma-dromedarii-acari-ixodidae-salivary-gland-extract-inhibits-angiogenesis-and-exhibits-in-vitro-antitumor-effects
#3
Chaima Bensaoud, Zaineb Abdelkafi-Koubaa, Hazem Ben Mabrouk, Maram Morjen, Issam Hmila, Adel Rhim, Mohamed El Ayeb, Naziha Marrakchi, Ali Bouattour, Youmna M'ghirbi
Hard ticks (Acari: Ixodidae) are blood-sucking ectoparasites characterized by the extended period of their attachment to their host. To access their bloodmeal, ticks secrete saliva containing a range of molecules that target the host's inflammation, immune system, and hemostatic components. Some of these molecules reportedly possess antiangiogenic and antitumor properties. The present study describes our investigation, the first of its kind, of the antiangiogenic and antitumoral effects of the Hyalomma dromedarii Koch, 1844 (Acari: Ixodidae), salivary gland extract (SGE), which inhibited the adhesion and migration of Human Umbilical Vein Endothelial Cells (HUVECs) in a dose-dependent manner, as well as angiogenesis in the Chick Chorioallantoic Membrane model...
September 25, 2017: Journal of Medical Entomology
https://www.readbyqxmd.com/read/29028806/a-novel-immunotoxin-reveals-a-new-role-for-cd321-in-endothelial-cells
#4
Takeshi Fukuhara, Jia Kim, Shintaro Hokaiwado, Makiko Nawa, Hayato Okamoto, Tomohiko Kogiso, Tetsuro Watabe, Nobutaka Hattori
There are currently several antibody therapies that directly target tumors, and antibody-drug conjugates represent a novel moiety as next generation therapeutics. Here, we used a unique screening probe, DT3C, to identify functional antibodies that recognized surface molecules and functional epitopes, and which provided toxin delivery capability. Accordingly, we generated the 90G4 antibody, which induced DT3C-dependent cytotoxicity in endothelial cells. Molecular analysis revealed that 90G4 recognized CD321, a protein localized at tight junctions...
2017: PloS One
https://www.readbyqxmd.com/read/29028771/mechanisms-of-thrombocytopenia-during-septic-shock-a-multiplex-cluster-analysis-of-endogenous-sepsis-mediators
#5
Alexandre Bedet, Keyvan Razazi, Florence Boissier, Mathieu Surenaud, Sophie Hue, Stéphane Giraudier, Christian Brun-Buisson, Armand Mekontso Dessap
BACKGROUND: Thrombocytopenia is a common feature of sepsis and may involve various mechanisms often related to the inflammatory response. This study aimed at evaluating factors associated with thrombocytopenia during human septic shock. In particular, we used a multiplex analysis to assess the role of endogenous sepsis mediators. METHODS: Prospective, observational study. Thrombocytopenia was defined as an absolute platelet count <100 G/L or a 50% relative decrease in platelet count during the first week of septic shock...
October 12, 2017: Shock
https://www.readbyqxmd.com/read/29028570/bovine-ovarian-follicular-growth-and-development-correlate-with-lysophosphatidic-acid-expression
#6
Emilia Sinderewicz, Katarzyna Grycmacher, Dorota Boruszewska, Ilona Kowalczyk-Zięba, Joanna Staszkiewicz, Tomasz Ślężak, Izabela Woclawek-Potocka
The basis of successful reproduction is proper ovarian follicular growth and development. In addition to prostaglandins and vascular endothelial growth factor, a number of novel factors are suggested as important regulators of follicular growth and development: PGES, TFG, CD36, RABGAP1, DBI and BTC. This study focuses on examining the expression of these factors in granulosa and thecal cells that originate from different ovarian follicle types and their link with the expression of lysophosphatidic acid (LPA), known local regulator of reproductive functions in the cow...
September 25, 2017: Theriogenology
https://www.readbyqxmd.com/read/29028550/paternal-exposure-to-environmental-17-alpha-ethinylestradiol-concentrations-modifies-testicular-transcription-affecting-the-sperm-transcript-content-and-the-offspring-performance-in-zebrafish
#7
David G Valcarce, Elena Vuelta, Vanesa Robles, Maria Paz Herráez
The synthetic estrogen 17-α-ethinylestradiol (EE2), a major constituent in contraceptive pills, is an endocrine disrupting chemical (EDC) present in the aquatic environment at concentrations of ng/L. Developmental exposure to these low concentrations in fish can induce several disorders. Zebrafish (Danio rerio) is a perfect organism for monitoring the effects of environmental contaminants. Our hypothesis is that changes promoted by EE2 in the germ line of male adults could be transmitted to the unexposed progeny...
September 28, 2017: Aquatic Toxicology
https://www.readbyqxmd.com/read/29028070/gene-expression-in-human-adipose-derived-stem-cells-comparison-of-2d-films-3d-electrospun-meshes-or-co-cultured-scaffolds-with-two-way-paracrine-effects
#8
S C Hess, W J Stark, D Mohn, N Cohrs, S Märsmann, M Calcagni, P Cinelli, J Buschmann
Finding the appropriate cues to trigger the desired differentiation is a challenge in tissue engineering when stem cells are involved. In this regard, three-dimensional environments are often compared to cells' two-dimensional culture behaviour (plastic culture dish). Here, we compared the gene expression pattern of human adipose-derived stem cells (ASC) seeded in a three-dimensional (3D) electrospun mesh and on a two-dimensional (2D) film - both of exactly the same material. Additionally, we conducted experiments with a scaffold floating above a film to investigate two-way paracrine effects (co-system)...
October 13, 2017: European Cells & Materials
https://www.readbyqxmd.com/read/29027762/fresh-noncultured-endothelial-progenitor-cells-improve-neonatal-lung-hyperoxia-induced-alveolar-injury
#9
Alexandra B Firsova, A Daniel Bird, Degu Abebe, Judy Ng, Richard Mollard, Timothy J Cole
Treatment of preterm human infants with high oxygen can result in disrupted lung alveolar and vascular development. Local or systemic administration of endothelial progenitor cells (EPCs) is reported to remedy such disruption in animal models. In this study, the effects of both fresh (enriched for KDR) and cultured bone marrow (BM)-derived cell populations with EPC characteristics were examined following hyperoxia in neonatal mouse lungs. Intraperitoneal injection of fresh EPCs into five-day-old mice treated with 90% oxygen resulted in full recovery of hyperoxia-induced alveolar disruption by 56 days of age...
October 13, 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/29027615/assessment-of-the-role-of-everolimus-therapy-in-patients-with-renal-cell-carcinoma-based-on-daily-routine-and-recent-research-results
#10
Anikó Maráz, András Csejtei, Judit Kocsis, Miklós Szűcs, Zsuzsanna Kahán, György Bodoky, Magdolna Dank, László Mangel, János Révész, Zoltán Varga, Lajos Géczi
Everolimus is indicated for adults with metastatic renal cell carcinoma (mRCC) after failure of vascular endothelial growth factor receptor-tyrosine kinase inhibitors (TKI). Currently, the therapeutic applicability of EVE has been changing. Multicenter evaluation of efficacy and safety of everolimus in daily routine and definition of patient characteristics with favorable outcome. Data of 165 patients from 9 oncology institutes in Hungary were analyzed retrospectively. Everolimus therapy was used after one TKI in 10 mg starting dose...
October 13, 2017: Pathology Oncology Research: POR
https://www.readbyqxmd.com/read/29027535/transplant-glomerulopathy
#11
REVIEW
Edward J Filippone, Peter A McCue, John L Farber
In the renal allograft, transplant glomerulopathy represents a morphologic lesion and not a specific diagnosis. The hallmark pathologic feature is glomerular basement membrane reduplication by light microscopy or electron microscopy in the absence of immune complex deposits. Transplant glomerulopathy results from chronic, recurring endothelial cell injury that can be mediated by HLA alloantibodies (donor-specific antibodies), various autoantibodies, cell-mediated immune injury, thrombotic microangiopathy, or chronic hepatitis C...
October 13, 2017: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/29027526/-investigation-of-the-structure-of-a-functionally-intact-xenopericardial-bioconduit-after-long-term-implantation
#12
R A Mukhamadiyarov, N V Rutkovskaya, I V Milto, O D Sidopova, Yu А Kudryavtseva, L S Barbarash
AIM: to investigate the cellular composition of a functionally intact xenopericardial valve in a recipient with acquired mitral defect after long-term implantation. MATERIAL AND METHODS: A Uniline bioconduit (BC) ('Neocor', Kemerovo) removed from the heart in the mitral position at 7.2 years after implantation was investigated. Heart valve leaflets were fixed in a buffered 4% paraformaldehyde solution and imbedded in paraffin or epoxy resin. Slices made from the paraffin samples were stained with hematoxylin and eosin or underwent immunohistochemical (IHC) examination for typing endothelial cells, smooth muscle cells, macrophages, fibroblasts, and T and B lymphocytes...
2017: Arkhiv Patologii
https://www.readbyqxmd.com/read/29027376/adenosine-a2a-receptor-agonist-ameliorates-eae-and-correlates-with-th1-cytokine-induced-blood-brain-barrier-dysfunction-via-suppression-of-mlck-signaling-pathway
#13
Ying Liu, Marwan Alahiri, Bianca Ulloa, Boxun Xie, Saud A Sadiq
INTRODUCTION: Multiple sclerosis (MS) disease activity is associated with blood-brain barrier (BBB) disruption, which is mediated by inflammatory cytokines released by CD4+ lymphocytes. To assess the effects of adenosine A2A receptors on BBB permeability in vitro and in vivo. METHODS: A2A receptor expression was detected by immunostaining in experimental autoimmune encephalomyelitis (EAE) C57BL/6 mice immunized with myelin oligodendrocyte glycoprotein (MOG)35-55 , and human MS brain...
October 12, 2017: Immunity, Inflammation and Disease
https://www.readbyqxmd.com/read/29027232/immune-recognition-of-irradiated-cancer-cells
#14
REVIEW
Erik Wennerberg, Claire Vanpouille-Box, Sophia Bornstein, Takahiro Yamazaki, Sandra Demaria, Lorenzo Galluzzi
Ionizing irradiation has been extensively employed for the clinical management of solid tumors, with therapeutic or palliative intents, for decades. Until recently, radiation therapy (RT) was believed to mediate antineoplastic activity mostly (if not only) as a consequence of cancer cell-intrinsic effects. Indeed, the macromolecular damage imposed to malignant cells by RT initiates one or multiple signal transduction cascades that drive a permanent proliferative arrest (cellular senescence) or regulated cell death...
November 2017: Immunological Reviews
https://www.readbyqxmd.com/read/29027051/cell-response-of-flexible-pmma-derivatives-supremacy-of-surface-chemistry-over-substrate-stiffness
#15
Elke Van De Walle, Ine Van Nieuwenhove, Winnok De Vos, Heidi Declercq, Peter Dubruel, Sandra Van Vlierberghe
The present work reports on the development of a range of poly(methyl methacrylate)/poly(ethylene glycol) (PMMAPEG)-based materials, characterized by different elasticity moduli in order to study the influence of the substrate's mechanical properties on the response of human umbilical vein endothelial cells (HUVECs). To render the selected materials cell-interactive, a polydopamine (PDA)/gelatin type B (Gel B) coating was applied. Prior to the in vitro assay, the success of the PDA and Gel B immobilization onto the materials was confirmed using X-ray photoelectron spectroscopy (XPS) as reflected by the nitrogen percentages measured for the materials after PDA and Gel B deposition...
October 12, 2017: Journal of Materials Science. Materials in Medicine
https://www.readbyqxmd.com/read/29026706/development-of-novel-drug-eluting-stents-for-acute-myocardial-infarction
#16
REVIEW
Doo Sun Sim, Myung Ho Jeong
Delayed arterial healing at culprit sites after drug-eluting stent (DES) placement for acute myocardial infarction (AMI) is associated with increased risk of late stent thrombosis. The Korea Acute Myocardial Infarction Registry was established in commemoration of the 50(th) anniversary of Korea Circulation Society. Between November 2005 and December 2016, more than 62,000 patients were registered from 50 primary percutaneous coronary intervention (PCI) centers in Korea. DES in AMI may be safe and effective, however, there is concern about increased stent thrombosis after DES implantation in AMI patients, requiring longer-term dual anti-platelet therapy to reduce the risk of late stent thrombosis...
September 2017: Chonnam Medical Journal
https://www.readbyqxmd.com/read/29026447/epigenome-alterations-in-aortic-valve-stenosis-and-its-related-left-ventricular-hypertrophy
#17
REVIEW
Igor Gošev, Martina Zeljko, Željko Đurić, Ivana Nikolić, Milorad Gošev, Sanja Ivčević, Dino Bešić, Zoran Legčević, Frane Paić
Aortic valve stenosis is the most common cardiac valve disease, and with current trends in the population demographics, its prevalence is likely to rise, thus posing a major health and economic burden facing the worldwide societies. Over the past decade, it has become more than clear that our traditional genetic views do not sufficiently explain the well-known link between AS, proatherogenic risk factors, flow-induced mechanical forces, and disease-prone environmental influences. Recent breakthroughs in the field of epigenetics offer us a new perspective on gene regulation, which has broadened our perspective on etiology of aortic stenosis and other aortic valve diseases...
2017: Clinical Epigenetics
https://www.readbyqxmd.com/read/29026302/ultrasmall-aguix-theranostic-nanoparticles-for-vascular-targeted-interstitial-photodynamic-therapy-of-glioblastoma
#18
Eloïse Thomas, Ludovic Colombeau, Mickaël Gries, Thibaut Peterlini, Clélia Mathieu, Noémie Thomas, Cédric Boura, Céline Frochot, Régis Vanderesse, François Lux, Muriel Barberi-Heyob, Olivier Tillement
Despite combined treatments, glioblastoma outcome remains poor with frequent local recurrences, indicating that a more efficient and local therapy is needed. In this way, vascular-targeted photodynamic therapy (VTP) could help tumor eradication by destroying its neovessels. In this study, we designed a polysiloxane-based nanoparticle (NP) combining a magnetic resonance imaging (MRI) contrast agent, a photosensitizer (PS) and a new ligand peptide motif (KDKPPR) targeting neuropilin-1 (NRP-1), a receptor overexpressed by angiogenic endothelial cells of the tumor vasculature...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/29026201/dual-contribution-of-trpv4-antagonism-in-the-regulatory-effect-of-vasoinhibins-on-blood-retinal-barrier-permeability-diabetic-milieu-makes-a-difference
#19
David Arredondo Zamarripa, Ramsés Noguez Imm, Ana María Bautista Cortés, Osvaldo Vázquez Ruíz, Michela Bernardini, Alessandra Fiorio Pla, Dimitra Gkika, Natalia Prevarskaya, Fernando López-Casillas, Wolfgang Liedtke, Carmen Clapp, Stéphanie Thébault
Breakdown of the blood-retinal barrier (BRB), as occurs in diabetic retinopathy and other chronic retinal diseases, results in vasogenic edema and neural tissue damage, causing vision loss. Vasoinhibins are N-terminal fragments of prolactin that prevent BRB breakdown during diabetes. They modulate the expression of some transient receptor potential (TRP) family members, yet their role in regulating the TRP vanilloid subtype 4 (TRPV4) remains unknown. TRPV4 is a calcium-permeable channel involved in barrier permeability, which blockade has been shown to prevent and resolve pulmonary edema...
October 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29026158/ginsenoside-rb1-prevents-homocysteine-induced-epc-dysfunction-via-vegf-p38mapk-and-sdf-1-cxcr4-activation
#20
Tao-Hua Lan, Dan-Ping Xu, Man-Ting Huang, Ju-Xian Song, Huan-Lin Wu, Min Li
Hyperhomocystinemia (HHcy) is known as an independent risk factor for cardiovascular disease. Our previous study showed that ginsenoside Rb1, the major active constituent of ginseng, prevents homocysteine (Hcy)-induced endothelial damage. However, the role of ginsenoside Rb1 in Hcy-induced dysfunction in endothelial progenitor cells (EPCs) remains unknown. In the study, we found that ginsenoside Rb1 reversed the Hcy-induced impairment of adhesive and migratory ability in EPCs which were significantly abolished by CXCR4 antagonist AMD3100 and VEGFR2 inhibitor SU5416...
October 12, 2017: Scientific Reports
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