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Angiopoietins

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https://www.readbyqxmd.com/read/29690924/the-effect-of-regularly-dosed-paracetamol-versus-no-paracetamol-on-renal-function-in-plasmodium-knowlesi-malaria-packnow-study-protocol-for-a-randomised-controlled-trial
#1
Daniel J Cooper, Katherine Plewes, Matthew J Grigg, Giri S Rajahram, Kim A Piera, Timothy William, Mark D Chatfield, Tsin Wen Yeo, Arjen M Dondorp, Nicholas M Anstey, Bridget E Barber
BACKGROUND: Plasmodium knowlesi is the most common cause of human malaria in Malaysia. Acute kidney injury (AKI) is a frequent complication. AKI of any cause can have long-term consequences, including increased risk of chronic kidney disease, adverse cardiovascular events and increased mortality. Additional management strategies are therefore needed to reduce the frequency and severity of AKI in malaria. In falciparum malaria, cell-free haemoglobin (CFHb)-mediated oxidative damage contributes to AKI...
April 24, 2018: Trials
https://www.readbyqxmd.com/read/29686285/novel-plasma-proteins-in-nepalese-school-aged-children-are-associated-with-a-small-head-size-at-birth
#2
Sun Eun Lee, Keith P West, Robert N Cole, Kerry J Schulze, Lee S-F Wu, James D Yager, John Groopman, Parul Christian
Fetal growth restriction increases the risk of poor childhood growth and development and chronic disease in adulthood. Yet, little is known about biological pathways that mediate the long-lasting effects of suboptimal intrauterine growth. We explored the plasma proteome in a cohort of 500 Nepalese children 6-8 years of age to identify plasma proteins associated with multiple anthropometric size indicators at birth. Among 982 proteins analyzed, no proteins differed by birth weight, length, or weight-for-length indicators...
April 23, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29686052/synthesis-of-human-neutrophil-extracellular-traps-contributes-to-angiopoietin-mediated-in-vitro-proinflammatory-and-proangiogenic-activities
#3
Simon S Lavoie, Elizabeth Dumas, Branka Vulesevic, Paul-Eduard Neagoe, Michel White, Martin G Sirois
Neutrophil extracellular traps (NETs) are composed of nuclear DNA in a web-like structure extruded from neutrophils in response to either bacterial infection or inflammation. We previously reported the expression of angiopoietin Tie2 receptor on human neutrophils and the capacity of both angiopoietins (Ang1 and Ang2) to induce proinflammatory activities, such as synthesis and release of platelet-activating factor, upregulation of β2 integrin complex (CD11/CD18), and neutrophil chemotaxis. In contrast, only Ang1 but not Ang2 is capable of promoting translational and transcriptional activities in neutrophils...
April 23, 2018: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/29670463/combination-treatment-of-c16-peptide-and-angiopoietin-1-alleviates-neuromyelitis-optica-in-an-experimental-model
#4
Yuanyuan Zhang, Kewei Tian, Hong Jiang, Beibei Wang, Shu Han
Neuromyelitis optica (NMO) is an autoimmune inflammatory demyelinating disease that mainly affects the spinal cord and optic nerve, causing blindness and paralysis in some individuals. Moreover, NMO may cause secondary complement-dependent cytotoxicity (CDC), leading to oligodendrocyte and neuronal damage. In this study, a rodent NMO model, showing typical NMO pathogenesis, was induced with NMO-IgG from patient serum and human complement. We then tested whether the combination of C16, an α v β 3 integrin-binding peptide, and angiopoietin-1 (Ang1), a member of the endothelial growth factor family, could alleviate NMO in the model...
2018: Mediators of Inflammation
https://www.readbyqxmd.com/read/29667617/combination-of-stromal-vascular-fraction-and-ad-comp-ang1-gene-therapy-improves-long-term-therapeutic-efficacy-for-diabetes-induced-erectile-dysfunction
#5
Guo-Nan Yin, Lin Wang, Xiang-Nan Lin, Lei Shi, Zhen-Lin Gao, Feng-Chan Han, Ping Li, Yin-Chuan Jin, Jun-Kyu Suh, Ji-Kan Ryu, Xiong Wang, Hai-Rong Jin
Men with diabetic erectile dysfunction (ED) respond poorly to the currently available oral phosphodiesterase-5 inhibitors. Therefore, functional therapies for diabetic ED are needed. Stromal vascular fraction (SVF) and the adenovirus-mediated cartilage oligomeric matrix angiopoietin-1 (Ad-COMP-Ang1) gene are known to play critical roles in penile erection. We previously reported that SVF and Ad-COMP-Ang1 have only a short-term effect in restoring erectile function. Further improvements to ED therapy are needed for long-lasting effects...
April 17, 2018: Asian Journal of Andrology
https://www.readbyqxmd.com/read/29663962/tuberculous-lymphadenitis-is-associated-with-altered-levels-of-circulating-angiogenic-factors
#6
G R Kathamuthu, K Moideen, D Baskaran, G Sekar, S Rathinam, V J Bharathi, G R Ganeshan, S Babu
BACKGROUND: Angiogenic factors are important in granuloma formation and serve as biomarkers in pulmonary tuberculosis (PTB). The relationship between these markers and tuberculous lymphadenitis (TBL) is not known. OBJECTIVE AND DESIGN: To examine the association of vascular endothelial growth factor (VEGF) and angiopoietin (Ang) family molecules in TBL, we measured systemic levels of VEGF-A, C, D, R1 (VEGF-receptor 1), R2, R3, Ang-1, Ang-2 and TIE2 (tyrosine kinase with immunoglobulin-like and epidermal growth factor-like domains 2) levels in TBL, latent tuberculous infection (LTBI) and lymph node culture supernatants (VEGF-A, C and Ang-2) of the same TBL patients...
May 1, 2018: International Journal of Tuberculosis and Lung Disease
https://www.readbyqxmd.com/read/29662628/a-gene-expression-signature-predicts-recurrence-free-survival-in-meningioma
#7
Adriana Olar, Lindsey D Goodman, Khalida M Wani, Nicholas S Boehling, Devi S Sharma, Reema R Mody, Joy Gumin, Elizabeth B Claus, Frederick F Lang, Timothy F Cloughesy, Albert Lai, Kenneth D Aldape, Franco DeMonte, Erik P Sulman
BACKGROUND: Meningioma is the most common primary brain tumor and has a variable risk of local recurrence. While World Health Organization (WHO) grade generally correlates with recurrence, there is substantial within-grade variation of recurrence risk. Current risk stratification does not accurately predict which patients are likely to benefit from adjuvant radiation therapy (RT). We hypothesized that tumors at risk for recurrence have unique gene expression profiles (GEP) that could better select patients for adjuvant RT...
March 23, 2018: Oncotarget
https://www.readbyqxmd.com/read/29644004/il-8-associates-with-a-pro-angiogenic-and-mesenchymal-subtype-in-glioblastoma
#8
Siobhan Conroy, Frank A E Kruyt, Michiel Wagemakers, Krishna P L Bhat, Wilfred F A den Dunnen
Glioblastoma (GBM) is a highly aggressive brain tumor characterized by a high rate of vascularization. However, therapeutic targeting of the vasculature through anti-vascular endothelial growth factor (VEGF) treatment has been disappointing, for which Angiopoietin-2 (Ang-2) upregulation has partly been held accountable. In this study we therefore explored the interplay of Ang-2 and VEGFA and their effect on angiogenesis in GBM, especially in the context of molecular subclasses. In a large patient cohort we identified that especially combined high expression of Ang-2 and VEGFA predicted poor overall survival of GBM patients...
March 20, 2018: Oncotarget
https://www.readbyqxmd.com/read/29627690/kaempferol-modulates-angiopoietin-like-protein-2-expression-to-lessen-the-mastitis-in-mice
#9
Hong-Bo Xiao, Guo-Guang Sui, Xiang-Yang Lu, Zhi-Liang Sun
BACKGROUND: Mastitis is inflammation of a breast (or udder). Angiopoietin-like protein 2 (ANGPTL2) has been found as a key inflammatory mediator in mastitis. Purpose of this research was to investigate the mechanisms about repressing effect of kaempferol on mastitis. METHODS: Forty mice were randomly divided into 4 groups (n = 10): C57BL/6J control mice, untreated murine mastitis, 10 mg/kg kaempferol treated murine mastitis (ip), and 30 mg/kg kaempferol treated murine mastitis (ip)...
November 22, 2017: Pharmacological Reports: PR
https://www.readbyqxmd.com/read/29627378/brown-adipose-tissue-derived-angptl4-controls-glucose-and-lipid-metabolism-and-regulates-thermogenesis
#10
Abhishek K Singh, Binod Aryal, Balkrishna Chaube, Noemi Rotllan, Luis Varela, Tamas L Horvath, Yajaira Suárez, Carlos Fernández-Hernando
OBJECTIVES: Brown adipose tissue (BAT) controls triglyceride-rich lipoprotein (TRL) catabolism. This process is mediated by the lipoprotein lipase (LPL), an enzyme that catalyzed the hydrolysis of triglyceride (TAG) in glycerol and fatty acids (FA), which are burned to generate heat. LPL activity is regulated by angiopoietin-like 4 (ANGPTL4), a secretory protein produced in adipose tissues (AT), liver, kidney, and muscle. While the role of ANGPTL4 in regulating lipoprotein metabolism is well established, the specific contribution of BAT derived ANGPTL4 in controlling lipid and glucose homeostasis is not well understood...
March 29, 2018: Molecular Metabolism
https://www.readbyqxmd.com/read/29621508/angiopoietin-like-3-is-a-potential-biomarker-for-retinopathy-in-type-2-diabetic-patients
#11
Cai-Guo Yu, Sha-Sha Yuan, Long-Yan Yang, Jing Ke, Li-Jie Zhang, Jia-Nan Lang, Da-Wei Zhang, Shao-Zhen Zhao, Dong Zhao, Ying-Mei Feng
PURPOSE: To investigate whether angiopoietin-like 3 (ANGPTL3) and angiopoietin-like 4 (ANGPTL4) are differentially associated with the severity of retinopathy in patients with type 2 diabetes mellitus (T2DM). DESIGN: Cross-sectional study. METHODS: Serum levels of ANGPTL3, ANGPTL4, high-sensitivity C-reactive protein (CRP), vascular adhesion molecule-1 (VCAM-1), intracellular adhesion molecule-1 (ICAM-1) and vascular endothelial growth factor (VEGF) were quantified by ELISA...
April 2, 2018: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/29620147/lncrna-pvt1-promotes-the-angiogenesis-of-vascular-endothelial-cell-by-targeting-mir%C3%A2-26b-to-activate-ctgf-angpt2
#12
Jifu Zheng, Lili Hu, Jing Cheng, Jing Xu, Zhiqiang Zhong, Yuan Yang, Zheng Yuan
Angiogenesis is essential for various biological processes, including tumor blood supply delivery, cancer cell growth, invasion and metastasis. Plasmacytoma variant translocation 1 (PVT1) long noncoding RNA (lncRNA) has been previously reported to affect angiogenesis of glioma microvascular endothelial cells by regulating microRNA (miR)‑186 expression level. However, the specific underlying molecular mechanism of PVT1 regulation of angiogenesis in vascular endothelial cells remains to be elucidated. The present study investigated the role of PVT1 in cell proliferation, migration and vascular tube formation of human umbilical vein endothelial cells (HUVECs) using MTT assay, Transwell migration assay and in vitro vascular tube formation assay, respectively...
March 29, 2018: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29619530/can-targeting-angptl-proteins-improve-glucose-tolerance
#13
Brandon S J Davies
Three members of the angiopoietin-like (ANGPTL) family of proteins, ANGPTL3, ANGPTL4 and ANGPTL8, are known regulators of plasma triacylglycerol levels. Recently, these three proteins have garnered considerable interest as potential targets for therapeutically reducing plasma triacylglycerol levels and improving cardiovascular outcomes. In this issue of Diabetologia, Janssen et al ( https://doi.org/10.1007/s00125-018-4583-5 ) and Vatner et al ( https://doi.org/10.1007/s00125-018-4579-1 ) show that reducing levels of ANGPTL4 and ANGPTL8, respectively, could have the added benefit of improving glucose tolerance...
April 4, 2018: Diabetologia
https://www.readbyqxmd.com/read/29619113/analysis-of-circulating-angiopoietin-like-protein-3-and-genetic-variants-in-lipid-metabolism-and-liver-health-the-diogenes-study
#14
Anne Lundby Hess, Jérôme Carayol, Trine Blædel, Jörg Hager, Alessandro Di Cara, Arne Astrup, Wim H M Saris, Lesli Hingstrup Larsen, Armand Valsesia
Background: Angiopoietin-like protein 3 (ANGPTL3), a liver-derived protein, plays an important role in the lipid and lipoprotein metabolism. Using data available from the DiOGenes study, we assessed the link with clinical improvements (weight, plasma lipid, and insulin levels) and changes in liver markers, alanine aminotransferase, aspartate aminotransferase (AST), adiponectin, fetuin A and B, and cytokeratin 18 (CK-18), upon low-calorie diet (LCD) intervention. We also examined the role of genetic variation in determining the level of circulating ANGPTL3 and the relation between the identified genetic markers and markers of hepatic steatosis...
2018: Genes & Nutrition
https://www.readbyqxmd.com/read/29618931/upregulated-vegfa-and-dll4-act-as-potential-prognostic-genes-for-clear-cell-renal-cell-carcinoma
#15
Xilong Wang, Jun Zhang, Yangyun Wang, Minqi Tu, Ying Wang, Guowei Shi
Purpose: As a typical hypervascular tumor, clear cell renal cell carcinoma (ccRCC) is the most common type of RCC. This study was aimed to explore the prognostic genes for ccRCC, focusing on the roles of vascular endothelial growth factor A ( VEGFA ) and Delta-like ligand 4 ( DLL4 ) in the disease. Materials and methods: The mRNA-sequencing data of kidney renal clear cell carcinoma (KIRC) were obtained from The Cancer Genome Atlas (TCGA) database, including 469 tumor samples and 68 adjacent normal samples...
2018: OncoTargets and Therapy
https://www.readbyqxmd.com/read/29618157/angiopoietin-2-and-survival-in-peripheral-artery-disease-patients
#16
Clemens Höbaus, Gerfried Pesau, Carsten Thilo Herz, Thomas Wrba, Renate Koppensteiner, Gerit-Holger Schernthaner
Survival of peripheral arterial disease (PAD) patients increased over the last decade due to increased use of secondary preventive medication and rapid revascularization of PAD patients. Angiogenetic markers such as vascular endothelial growth factor (VEGF), angiopoietin-2 (Ang-2) and its receptor Tie-2 might be useful markers to assess the residual risk for mortality in PAD patients. The aim of this study was to evaluate angiogenetic markers for the prediction of mortality in a PAD cohort. For this purpose, 366 patients (mean age: 69 ± 10 years) with PAD Fontaine stage I or II were included and followed up over a 5-year study period...
April 2018: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/29610929/comp-angiopoietin-1-ameliorates-inflammation-induced-lymphangiogenesis-in-dextran-sulfate-sodium-dss-induced-colitis-model
#17
Ae Sin Lee, Mi Jeong Sung, Won Kim, Yu Jin Jung
Alterations in the intestinal lymphatic network are pathological processes as related to inflammatory bowel disease (IBD). In this study, we demonstrated that reduction in inflammation-induced lymphangiogenesis ameliorates experimental acute colitis. A soluble and stable angiopoietin-1 (Ang1) variant, COMP-Ang1, possesses anti-inflammatory and angiogenic effects. We investigated the effects of COMP-Ang1 on an experimental colonic inflammation model. Experimental colitis was induced in mice by administering 3% dextran sulfate sodium (DSS) via drinking water...
April 2, 2018: Journal of Molecular Medicine: Official Organ of the "Gesellschaft Deutscher Naturforscher und Ärzte"
https://www.readbyqxmd.com/read/29604278/genetic-overexpression-of-comp-ang1-impairs-bm-microenvironment-and-induces-senescence-of-bm-hscs
#18
Sung-Ho Kook, Hyun-Jaung Sim, Jae-Won Hwang, Young-Hyun Baek, Chun-Chu Kim, Jeong-Hoon Lee, Eui-Sic Cho, Jeong-Chae Lee
Supplemental Angiopoietin 1 (Ang1) exerts its therapeutic potential on microvascular regression-associated diseases, and this potential is linked with the function of hematopoietic stem cells (HSCs). However, the underlying mechanisms of the effect of enhanced angiogenesis on the modulation of HSCs are not yet defined. Here, we generated transgenic mice expressing Cartilage Oligomeric Matrix Protein (COMP)-Ang1 in keratin 14-expressing cells. The mutant animals expressed excessive angiogenic characteristics in the skin and bone marrow (BM) along with redder skin with more numerous and branched vessels compared with their wild-type (WT) littermates...
March 31, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29604220/liver-angiopoietin-2-is-a-key-predictor-of-de-novo-or-recurrent-hepatocellular-cancer-after-hcv-direct-acting-antivirals
#19
Francesca Faillaci, Luca Marzi, Rosina Critelli, Fabiola Milosa, Filippo Schepis, Elena Turola, Silvia Andreani, Gabriele Vandelli, Veronica Bernabucci, Barbara Lei, Federica D'Ambrosio, Laura Bristot, Luisa Cavalletto, Liliana Chemello, Pamela Sighinolfi, Paola Manni, Antonino Maiorana, Cristian Caporali, Marcello Bianchini, Maria Marsico, Laura Turco, Nicola de Maria, Mariagrazia Del Buono, Paola Todesca, Luca di Lena, Dante Romagnoli, Paolo Magistri, Fabrizio di Benedetto, Savino Bruno, Gloria Taliani, Gianluigi Giannelli, Maria-Luz Martinez-Chantar, Erica Villa
Recent reports suggested that direct acting antivirals (DAAs) might favor hepatocellular carcinoma (HCC).In Study 1,we studied the proangiogenic liver microenvironment in 242 DAAs-treated chronic Hepatitis C patients with advanced fibrosis.Angiopoietin-2 expression was studied in tissue (cirrhotic and/or neoplastic) from recurrent,de novo,non-recurrent HCC or patients never developing HCC.Circulating Angiopoietin-2,vascular-endothelial growth factor (VEGF),and C-reactive protein were also measured. In Study 2,we searched for factors associated with de novo HCC in 257 patients with cirrhosis of different etiologies enrolled in a dedicated prospective study...
March 31, 2018: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/29601599/vcam-1-expression-is-upregulated-by-cd34-cd133-stem-cells-derived-from-septic-patients
#20
Christian Patry, Christoph Remmé, Christian Betzen, Burkhard Tönshoff, Benito A Yard, Grietje Beck, Neysan Rafat
CD34+/CD133+- cells are a bone marrow derived stem cell population, which presumably contain vascular progenitor cells and are associated with improved vascular repair. In this study, we investigated whether the adhesion molecules ICAM-1 (intercellular adhesion molecule-1), VCAM-1 (vascular adhesion molecule-1), E-selectin und L-selectin, which are involved in homing of vascular stem cells, are upregulated by CD34+/CD133+-stem cells from septic patients and would be associated with improved clinical outcome...
2018: PloS One
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