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Angiopoietin

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https://www.readbyqxmd.com/read/28351093/angptl8-betatrophin-is-expressed-in-visceral-adipose-tissue-and-relates-to-human-hepatic-steatosis-in-two-independent-clinical-collectives
#1
Christian von Loeffelholz, Andreas F H Pfeiffer, Johan F Lock, Steffi Lieske, Stephanie Döcke, Veronica Murahovschi, Jennifer Kriebel, Tonia de Las Heras Gala, Harald Grallert, Natalia Rudovich, Martin Stockmann, Joachim Spranger, Gerhard Jahreis, Stefan R Bornstein, George Lau, Aimin Xu, Jeanette Schulz-Menger, Louisa Exner, Sven Haufe, Jens Jordan, Stefan Engeli, Andreas L Birkenfeld
Angiopoietin-like protein 8 (ANGPTL8)/betatrophin expression in visceral adipose tissue and associations with circulating fatty acid profile have not yet been investigated.Forty subjects were included in a cross-sectional study, 57 in a dietary weight reduction intervention. Circulating Angiopoietin-like protein 8/betatrophin was measured in all subjects. Liver and adipose tissue were sampled and plasma fatty acids and tissue Angiopoietin-like protein 8/betatrophin expression were evaluated in the cross-sectional study...
March 28, 2017: Hormone and Metabolic Research, Hormon- und Stoffwechselforschung, Hormones et Métabolisme
https://www.readbyqxmd.com/read/28345626/elevated-angiopoietin-2-in-aqueous-of-patients-with-neovascular-age-related-macular-degeneration-correlates-with-disease-severity-at-presentation
#2
Danny S Ng, Yolanda W Yip, Malini Bakthavatsalam, Li J Chen, Tse K Ng, Timothy Y Lai, Calvin P Pang, Mårten E Brelén
Angiopoietin 2 (ANG2) is a proangiogenic cytokine which may have an implication in neovascular age related macular degeneration (nAMD). In 24 eyes of 24 subjects presenting with treatment naïve nAMD and 26 eyes of 26 control patients, aqueous humor samples were collected at the time of intervention (intravitreal injection of anti-vascular endothelial growth factor or cataract extraction). Best corrected visual acuity (BCVA) with and central macular thickness (CMT) using optical coherence tomography (OCT) were measured before each injection in the nAMD group...
March 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28344829/systemic-angiopoietin-1-2-dysregulation-following-cardiopulmonary-bypass-in-adults
#3
Emmanuel Charbonney, Elizabeth Wilcox, Yuexin Shan, Pablo Perez d'Empaire, Abhijit Duggal, Gordon D Rubenfeld, Conrad Liles, Claudia Dos Santos
AIM: Vascular leakage following cardiopulmonary bypass contributes to morbidity. Angiopoietin-1 and -2 are biomarkers of endothelial dysfunction. Our aim was to characterize Ang-1 and -2 association with clinical characteristics and outcomes. METHODS: Observational cohort study measuring Ang-1/-2 with a panel of cytokines in adults undergoing cardiopulmonary bypass. RESULTS: Ang-2 levels increased immediately postop whereas Ang-1 levels decreased over time...
March 2017: Future Science OA
https://www.readbyqxmd.com/read/28339741/shear-stress-regulated-mir-27b-controls-pericyte-recruitment-by-repressing-sema6a-and-sema6d
#4
Shemsi Demolli, Anuradha Doddaballapur, Kavi Devraj, Konstantin Stark, Yosif Manavski, Annekathrin Eckart, Christoph Zehendner, Tina Lucas, Thomas Korff, Markus Hecker, Steffen Massberg, Stefan Liebner, David Kaluza, Reinier A Boon, Stefanie Dimmeler
Aims: Vessel maturation involves the recruitment of mural cells such as pericytes and smooth muscle cells. Laminar shear stress is a major trigger for vessel maturation, but the molecular mechanisms by which shear stress affects recruitment of pericytes are unclear. MicroRNAs (miRs) are small non-coding RNAs, which post-transcriptionally control gene expression. The aim of the present study was to unveil the mechanism by which shear stress-regulated microRNAs contribute to vessel maturation...
February 23, 2017: Cardiovascular Research
https://www.readbyqxmd.com/read/28337358/gastric-cancer-and-angiogenesis-is-vegf-a-useful-biomarker-to-assess-progression-and-remission
#5
REVIEW
Filipa Macedo, Kátia Ladeira, Adhemar Longatto-Filho, Sandra F Martins
Gastric cancer (GC) has high mortality owing to its aggressive nature. Tumor angiogenesis plays an essential role in the growth, invasion, and metastatic spread of GC. The aim of this work was to review the angiogenic biomarkers related to the behavior of GC, documented in the literature. A search of the PubMed database was conducted with the MeSH terms: "Stomach neoplasms/blood [MeSH] or stomach neoplasms/blood supply [MeSH] and angiogenic proteins/blood [Major]". A total of 30 articles were initially collected, and 4 were subsequently excluded...
March 2017: Journal of Gastric Cancer
https://www.readbyqxmd.com/read/28334711/quantitative-proteomics-analysis-of-ischemia-reperfusion-injury-modulated-proteins-in-cardiac-microvascular-endothelial-cells-and-the-protective-role-of-tongxinluo
#6
Qing Li, He-He Cui, Yue-Jin Yang, Xiang-Dong Li, Gui-Hao Chen, Xia-Qiu Tian, Chen Jin, Qiu-Ting Dong, Pei-Sen Huang, Jun Xu
BACKGROUND: The protection of endothelial cells (ECs) against reperfusion injury has received little attention. In this study, we used Tandem Mass Tag (TMT) labeling proteomics to investigate the modulated proteins in an in vitro model of cardiac microvascular endothelial cells (CMECs) subjected to ischemia/reperfusion (I/R) injury and their alteration by traditional Chinese medicine Tongxinluo (TXL). METHODS: Human CMECs were subjected to 2 h of hypoxia followed by 2 h of reoxygenation with different concentrations of TXL Protein expression profiles of CMECs were determined using tandem mass spectrometry...
March 24, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28333979/the-interaction-between-fluid-status-and-angiopoietin-2-in-adverse-renal-outcomes-of-chronic-kidney-disease
#7
Yi-Chun Tsai, Yi-Wen Chiu, Hung-Tien Kuo, Jia-Jung Lee, Su-Chu Lee, Tzu-Hui Chen, Ming-Yen Lin, Shang-Jyh Hwang, Mei-Chuan Kuo, Ya-Ling Hsu, Hung-Chun Chen
BACKGROUND: Fluid overload is not only the characteristic but also an important complication in chronic kidney disease (CKD) patients. Angiopoietin-2 (Angpt2) disturbs endothelium and vessel permeability, which may induce fluid overload. The aim of this study is to examine the interaction between fluid status and Angpt2 in adverse renal outcomes of CKD. METHODS: This cohort study enrolled 290 patients with CKD stages 3-5 from January 2011 to December 2011 and followed up until December 2015...
2017: PloS One
https://www.readbyqxmd.com/read/28330813/atp-binding-cassette-transporter-a1-deficiency-in-human-induced-pluripotent-stem-cell-derived-hepatocytes-abrogates-hdl-biogenesis-and-enhances-triglyceride-secretion
#8
Xin Bi, Evanthia E Pashos, Marina Cuchel, Nicholas N Lyssenko, Mayda Hernandez, Antonino Picataggi, James McParland, Wenli Yang, Ying Liu, Ruilan Yan, Christopher Yu, Stephanie L DerOhannessian, Michael C Phillips, Edward E Morrisey, Stephen A Duncan, Daniel J Rader
Despite the recognized role of the ATP-binding Cassette Transporter A1 (ABCA1) in high-density lipoprotein (HDL) metabolism, our understanding of ABCA1 deficiency in human hepatocytes is limited. To define the functional effects of human hepatocyte ABCA1 deficiency, we generated induced pluripotent stem cell (iPSC)-derived hepatocyte-like cells (HLCs) from Tangier disease (TD) and matched control subjects. Control HLCs exhibited robust cholesterol efflux to apolipoprotein A-I (apoA-I) and formed nascent HDL particles...
March 14, 2017: EBioMedicine
https://www.readbyqxmd.com/read/28328682/early-tranexamic-acid-administration-ameliorates-the-endotheliopathy-of-trauma-and-shock-in-an-in-vitro-model
#9
Lawrence N Diebel, Jonathan V Martin, David M Liberati
BACKGROUND: Systemic vascular endothelial injury is a consequence of trauma-hemorrhagic shock (T/HS) which results in disturbances of coagulation, inflammation and endothelial barrier integrity. The effect of T/HS on the endothelium (Endotheliopathy of Trauma)[EoT] is of intense research interest and may lead to EoT directed therapies. Administration of tranexamic acid (TXA) in trauma patients is associated with a survival benefit and fewer complications if given early after injury. Mechanisms for this protective effect include the anti-fibrinolytic and anti-inflammatory effects of TXA...
March 21, 2017: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/28320596/phillyrin-lowers-body-weight-in-obese-mice-via-the-modulation-of-ppar-beta-delta-angptl-4-pathway
#10
Hong-Bo Xiao, Guo-Guang Sui, Xiang-Yang Lu
OBJECTIVE: Previous investigations have shown that the peroxisome proliferator activated receptor beta/delta (PPAR<beta>/<delta>)-angiopoietin-like protein 4 (ANGPTL4) pathways may be a new pharmacologic target for treatment of obesity. The present study was conducted to test the effect of phillyrin, ‎a glucoside, on obesity in mice. METHOD: Fifty mice were randomly divided into 5 groups (n=10): control group (C57BL/6J mice), obese mice group, two groups of obese mice treated with phillyrin (15 or 45mg/kg/day), one group of obese mice treated with PPAR<beta>/<delta> agonist GW0742 (3mg/kg/day)...
March 17, 2017: Obesity Research & Clinical Practice
https://www.readbyqxmd.com/read/28298545/homeobox-b9-mediates-resistance-to-anti-vegf-therapy-in-colorectal-cancer-patients
#11
Carmine Carbone, Geny Piro, Francesca Simionato, Francesca Ligorio, Chiara Cremolini, Fotios Loupakis, Greta Alì, Daniele Rossini, Valeria Merz, Raffaela Santoro, Camilla Zecchetto, Marco Zanotto, Federica Di Nicolantonio, Alberto Bardelli, Gabriella Fontanini, Giampaolo Tortora, Davide Melisi
PURPOSE: The identification of predictive biomarkers for antiangiogenic therapies remains an unmeet need. We hypothesized that the transcription factor Homeobox B9 (HOXB9) could be responsible for the tumor resistance to the anti-VEGF agent bevacizumab. EXPERIMENTAL DESIGN: HOXB9 expression and activation were measured in eight models of colorectal and pancreatic cancer with different resistance to bevacizumab. Serum levels of Angiopoietin-like Protein (Angptl)2, CXC receptor ligand (CXCL)1, interleukin(IL)8, and Transforming Growth Factor (TGF)β1 in tumor-bearing mice were measured by multiplex xMAP technology...
March 15, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28294401/endothelial-progenitor-cell-mobilization-in-preterm-infants-with-sepsis-is-associated-with-improved-survival
#12
Vahid Siavashi, Simin Asadian, Masoud Taheri-Asl, Samaneh Keshavarz, Mohamad Zamani-Ahmadmahmudi, Seyed Mahdi Nassiri
Microvascular dysfunction plays a key role in the pathology of sepsis, leading to multi-organ failure and death. Circulating endothelial progenitor cells (cEPCs) are critically involved in the maintenance of the vascular homeostasis in both physiological and pathological contexts. In this study, concentration of cEPCs in preterm infants with sepsis was determined to recognize whether the EPC mobilization would affect the clinical outcome of infantile sepsis. 133 preterm infants (81 with sepsis and 52 without sepsis) were enrolled in this study...
March 10, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28289658/expressions-and-clinical-significances-of-angiopoietin-1-angiopoietin-2-and-tie-2-receptor-in-patients-with-colorectal-cancer
#13
Sunghoon Hong, Hae Il Jung, Tae Sung Ahn, Han-Jo Kim, Kyu-Taek Lee, Moo-Jun Baek, Sang-Byung Bae
PURPOSE: Angiopoietin-1 (Ang-1) plays a crucial role in vascular and hematopoietic development, mainly through its cognate receptor, Tie-2. Increased levels of Ang-2 have been shown to be correlated with abnormal tumor angiogenesis in several malignancies. Hence, we estimated the increased expression of Ang-2 relative to Ang-1 in patients with colorectal cancer and correlated our finding with prognosis in order to investigate the relationships between the expressions of Ang-1/Ang-2/Tie-2 receptor and the clinical parameters or overall survival of such patients...
February 2017: Annals of Coloproctology
https://www.readbyqxmd.com/read/28288344/stereological-and-immunogold-studies-on-tie1-and-tie2-localization-in-glomeruli-indicate-angiopoietin-signaling-in-podocytes
#14
Anastasia Logothetidou, Ward De Spiegelaere, Wim Van den Broeck, Tim Vandecasteele, Liesbeth Couck, Paul Simoens, Pieter Cornillie
Angiopoietins and their TIE receptors are important regulators of vascular stability and remodeling. These molecules are involved not only in the normal development of kidney glomeruli, but also in disease, thus making them promising targets for therapies. Although TIE receptors are mainly found in endothelial cells, some reports observed TIE2 expression in glomerular podocytes as well. This suggests a role of angiopoietins in the regulation of podocytes. In the present study, we aimed to map the subcellular localization of TIE receptors in metanephric glomeruli of fetal pigs using high-resolution immunogold electron microscopy and the relative labeling index stereological approach...
March 2, 2017: Micron: the International Research and Review Journal for Microscopy
https://www.readbyqxmd.com/read/28287645/high-angiopoietin-2-and-suppression-of-tumorigenicity-2-levels-correlate-with-onset-of-sinusoidal-obstructive-syndrome-implication-for-the-utility-of-serial-biomarker-monitoring
#15
A T Nunes, P Jain, D E Kleiner, N N Shah, P Anandi, F Chinian, P Muranski, M Battiwalla, A J Barrett, S Ito
No abstract text is available yet for this article.
March 13, 2017: Bone Marrow Transplantation
https://www.readbyqxmd.com/read/28287161/angiopoietin-like-4-mediates-colonic-inflammation-by-regulating-chemokine-transcript-stability-via-tristetraprolin
#16
Terri Phua, Ming Keat Sng, Eddie Han Pin Tan, Dickson Shao Liang Chee, Yinliang Li, Jonathan Wei Kiat Wee, Ziqiang Teo, Jeremy Soon Kiat Chan, Maegan Miang Kee Lim, Chek Kun Tan, Pengcheng Zhu, Velmurugesan Arulampalam, Nguan Soon Tan
Many gastrointestinal diseases exhibit a protracted and aggravated inflammatory response that can lead to hypercytokinaemia, culminating in extensive tissue damage. Recently, angiopoietin-like 4 (ANGPTL4) has been implicated in many inflammation-associated diseases. However, how ANGPTL4 regulates colonic inflammation remains unclear. Herein, we show that ANGPTL4 deficiency in mice (ANGPTL4(-/-)) exacerbated colonic inflammation induced by dextran sulfate sodium (DSS) or stearic acid. Microbiota was similar between the two genotypes prior DSS challenge...
March 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28285686/pilot-phase-ii-study-of-metronomic-chemotherapy-in-combination-with-bevacizumab-in-patients-with-advanced-non-squamous-non-small-cell-lung-cancer
#17
Benjamin S Jones, Mary S Jerome, Deborah Miley, Bradford E Jackson, Mollie R DeShazo, Vishnu V B Reddy, Karan P Singh, Olivia C Brown, Francisco Robert
INTRODUCTION: The goal of this study was to explore the efficacy and tolerability of metronomic chemotherapy, a novel anti-angiogenic treatment strategy, in combination with bevacizumab in patients with advanced non-small cell lung cancer (NSCLC). METHODS: Subjects with newly diagnosed stage IV NSCLC were treated with 4-week cycles of paclitaxel 80mg/m(2) and gemcitabine 300mg/m(2) weekly for three weeks, plus bevacizumab 10mg/kg every two weeks. Radiologic assessments were performed every 8 weeks...
April 2017: Lung Cancer: Journal of the International Association for the Study of Lung Cancer
https://www.readbyqxmd.com/read/28285646/angiopoietin-like-protein-2-is-a-positive-regulator-of-osteoblast-differentiation
#18
Aiko Takano, Takao Fukuda, Takanori Shinjo, Misaki Iwashita, Etsuko Matsuzaki, Kensuke Yamamichi, Masaaki Takeshita, Terukazu Sanui, Fusanori Nishimura
INTRODUCTION AND AIMS: Several studies have reported that angiopoietin-like protein 2 (Angptl2) is expressed abundantly in adipocytes and is associated with adipose tissue inflammation. In the present study, we found that osteoblasts and mesenchymal stem cells also expressed Angptl2 at high levels. The aim of this study was to understand the role of Angptl2 in osteoblastic cell differentiation. METHODS: Angptl2 expression was examined during osteoblast and adipocyte differentiation...
April 2017: Metabolism: Clinical and Experimental
https://www.readbyqxmd.com/read/28276491/flunarizine-suppresses-endothelial-angiopoietin-2-in-a-calcium-dependent-fashion-in-sepsis
#19
Jennifer Retzlaff, Kristina Thamm, Chandra C Ghosh, Wolfgang Ziegler, Hermann Haller, Samir M Parikh, Sascha David
Sepsis is a life-threatening organ dysfunction caused by a dysregulated host response to an infection leading to systemic inflammation and endothelial barrier breakdown. The vascular-destabilizing factor Angiopoietin-2 (Angpt-2) has been implicated in these processes in humans. Here we screened in an unbiased approach FDA-approved compounds with respect to Angpt-2 suppression in endothelial cells (ECs) in vitro. We identified Flunarizine - a well-known anti-migraine calcium channel (CC) blocker - being able to diminish intracellular Angpt-2 protein in a time- and dose-dependent fashion thereby indirectly reducing the released protein...
March 9, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28275651/platelet-microparticles-a-biomarker-for-recanalization-in-rtpa-treated-ischemic-stroke-patients
#20
Andrew Bivard, Lisa F Lincz, Jane Maquire, Mark Parsons, Christopher Levi
OBJECTIVES: Identification of a biomarker for acute recanalization could have significant clinical impact. METHODS: We prospectively collected baseline, 24-h, and 90-day clinical and imaging data from consecutive ischemic stroke patients who fulfilled standard clinical eligibility criteria for treatment with intravenous recombinant tissue plasminogen activator (rtPA). Computed tomography angiography was acquired at 24 h and assessed using the thrombolysis is myocardial infarction (TIMI) scale with a score of 2b/3 indicating recanalization...
March 2017: Annals of Clinical and Translational Neurology
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