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endothelial glycocalyx

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https://www.readbyqxmd.com/read/29750566/advanced-age-results-in-a-diminished-endothelial-glycocalyx
#1
Daniel R Machin, Samuel I Bloom, Robert A Campbell, Tam T T Phuong, Phillip Ellis Gates, Lisa A Lesniewski, Matthew T Rondina, Anthony John Donato
Age-related microvascular dysfunction is well characterized in rodents and humans, but little is known about the properties of the microvascular endothelial glycocalyx in advanced age. We examined the glycocalyx in microvessels of young and old C57BL6 mice (young: 6.1{plus minus}0.1 vs old: 24.6{plus minus}0.2 mo) using intravital microscopy and transmission electron microscopy, and in human participants (young: 27{plus minus}1 vs old: 61{plus minus}2 yr) using intravital microscopy. Glycocalyx thickness in mesenteric and skeletal muscle microvessels was 51-54% lower in old, compared to young mice...
May 11, 2018: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/29746166/endothelial-barrier-function-is-differentially-regulated-by-ceacam1-mediated-signaling
#2
Sharang Ghavampour, Florian Kleefeldt, Heike Bömmel, Julian Volland, Alexander Paus, Andrea Horst, Verena Pfeiffer, Stefan Hübner, Nicole Wagner, Uwe Rueckschloss, Süleyman Ergün
Carcinoembryonic antigen-related cell adhesion molecule-1 (CEACAM1) is known to be crucial to vasculogenesis and angiogenesis. Recently, CEACAM1 deficiency was shown to result in the formation of aortic plaque-like lesions, indicating a role for CEACAM1 in adult vessels as well. The underlying mechanisms remained largely elusive. Therefore, we aimed to elucidate the role of CEACAM1 in endothelial homeostasis. Here, we show that CEACAM1 deficiency causes subcellular eNOS redistribution in endothelial cells ( i...
May 10, 2018: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/29730504/sparc-preserves-endothelial-glycocalyx-integrity-and-protects-against-adverse-cardiac-inflammation-and-injury-during-viral-myocarditis
#3
Marieke Rienks, Paolo Carai, Jurgen van Teeffelen, Bart Eskens, Wouter Verhesen, Bianca Hemmeryckx, Daniel M Johnson, Rick van Leeuwen, Elizabeth A Jones, Stephane Heymans, Anna-Pia Papageorgiou
Myocardial damage as a consequence of cardiotropic viruses leads to a broad variety of clinical presentations and is still a complicated condition to diagnose and treat. Whereas the extracellular matrix protein Secreted Protein Acidic and Rich in Cysteine or SPARC has been implicated in hypertensive and ischemic heart disease by modulating collagen production and cross-linking, its role in cardiac inflammation and endothelial function is yet unknown. Absence of SPARC in mice resulted in increased cardiac inflammation and mortality, and reduced cardiac systolic function upon coxsackievirus-B3 induced myocarditis...
May 3, 2018: Matrix Biology: Journal of the International Society for Matrix Biology
https://www.readbyqxmd.com/read/29728805/large-volume-crystalloid-fluid-is-associated-with-increased-hyaluronan-shedding-and-inflammation-in-a-canine-hemorrhagic-shock-model
#4
Lisa Smart, C J Boyd, M A Claus, E Bosio, G Hosgood, A Raisis
Shedding of the endothelial glycocalyx precedes leukocyte activation and adherence in acute inflammation. Rapid administration of crystalloid or colloid fluids for treating hemorrhagic shock may cause endothelial glycocalyx shedding, thereby increasing inflammation. This study aimed to compare the effect of different fluid treatments in a canine shock model on glycocalyx biomarker, hyaluronan, and inflammatory biomarkers. Greyhound dogs under general anesthesia subject to hemorrhage for 60 min were given 20 mL kg-1 of either fresh whole blood (FWB), hydroxyethyl starch (HES) 130/0...
May 4, 2018: Inflammation
https://www.readbyqxmd.com/read/29721496/the-role-of-plasma-transfusion-in-massive-bleeding-protecting-the-endothelial-glycocalyx
#5
REVIEW
Stefano Barelli, Lorenzo Alberio
Massive hemorrhage is a leading cause of death worldwide. During the last decade several retrospective and some prospective clinical studies have suggested a beneficial effect of early plasma-based resuscitation on survival in trauma patients. The underlying mechanisms are unknown but appear to involve the ability of plasma to preserve the endothelial glycocalyx. In this mini-review, we summarize current knowledge on glycocalyx structure and function, and present data describing the impact of hemorrhagic shock and resuscitation fluids on glycocalyx...
2018: Frontiers in Medicine
https://www.readbyqxmd.com/read/29717213/metabolic-systems-analysis-of-lps-induced-endothelial-dysfunction-applied-to-sepsis-patient-stratification
#6
Sarah McGarrity, Ósk Anuforo, Haraldur Halldórsson, Andreas Bergmann, Skarphéðinn Halldórsson, Sirus Palsson, Hanne H Henriksen, Pär Ingemar Johansson, Óttar Rolfsson
Endothelial dysfunction contributes to sepsis outcome. Metabolic phenotypes associated with endothelial dysfunction are not well characterised in part due to difficulties in assessing endothelial metabolism in situ. Here, we describe the construction of iEC2812, a genome scale metabolic reconstruction of endothelial cells and its application to describe metabolic changes that occur following endothelial dysfunction. Metabolic gene expression analysis of three endothelial subtypes using iEC2812 suggested their similar metabolism in culture...
May 1, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29712744/vascular-cell-glycocalyx-mediated-vascular-remodeling-induced-by-hemodynamic-environmental-alteration
#7
Jiajia Liu, Hongyan Kang, Xuejiao Ma, Anqiang Sun, Huiqin Luan, Xiaoyan Deng, Yubo Fan
Vascular remodeling induced by hemodynamic stimuli contributes to the pathophysiology of cardiovascular diseases. The importance of vascular cells (endothelial cells and smooth muscle cells) glycocalyx in the mechanotransduction of flow-induced shear stress at the cellular and molecular levels has been demonstrated over the past decade. However, its potential mechanotransduction role in vascular remodeling has triggered little attention. In the present study, a home-made apparatus was used to expose the rat abdominal aorta to sterile, flow or no flow, normal-pressure or high-pressure conditions for 4 days...
April 30, 2018: Hypertension
https://www.readbyqxmd.com/read/29707296/sevoflurane-did-not-show-better-protective-effect-on-endothelial-glycocalyx-layer-compared-to-propofol-during-lung-resection-surgery-with-one-lung-ventilation
#8
Hye-Jin Kim, Eunsoo Kim, Seung-Hoon Baek, Hee Young Kim, Joo-Yun Kim, Juyeon Park, Eun-Ji Choi
Background: The endothelial glycocalyx layer (EGL) coats the alveolar capillary endothelium and plays important roles in pulmonary vascular protection, modulation, and hemostasis. Ischemia-reperfusion, which occurs during lung resection surgery with one lung ventilation (OLV), can damage the EGL. Sevoflurane is known for its protective effect against ischemia-reperfusion injury. Therefore, we hypothesized that lung resection surgery produces EGL damage and sevoflurane protects the EGL better than the intravenous anesthetic propofol...
March 2018: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/29702687/macrophage-migration-inhibitory-factor-is-critical-for-dengue-ns1-induced-endothelial-glycocalyx-degradation-and-hyperpermeability
#9
Hong-Ru Chen, Chiao-Hsuan Chao, Ching-Chuan Liu, Tzong-Shiann Ho, Huey-Pin Tsai, Guey-Chuen Perng, Yee-Shin Lin, Jen-Ren Wang, Trai-Ming Yeh
Vascular leakage is one of the salient characteristics of severe dengue. Nonstructural protein 1 (NS1) of dengue virus (DENV) can stimulate endothelial cells to secrete endothelial hyperpermeability factor, macrophage migration inhibitory factor (MIF), and the glycocalyx degradation factor heparanase 1 (HPA-1). However, it is unclear whether MIF is directly involved in NS1-induced glycocalyx degradation. In this study, we observed that among NS1, MIF and glycocalyx degradation-related molecules, the HPA-1, metalloproteinase 9 (MMP-9) and syndecan 1 (CD138) serum levels were all increased in dengue patients, and only NS1 and MIF showed a positive correlation with the CD138 level in severe patients...
April 27, 2018: PLoS Pathogens
https://www.readbyqxmd.com/read/29689364/reversible-renal-glomerular-dysfunction-in-guinea-pigs-exposed-to-glutaraldehyde-polymerized-cell-free-hemoglobin
#10
Xiaoyuan Zhang, Matthew C Williams, Otgonchimeg Rentsendorj, Felice D'Agnillo
Chemically modified hemoglobin (Hb)-based oxygen carriers are promising oxygen replacement therapeutics however their potential renal effects are not fully understood. Using a guinea pig exchange transfusion model, we examined the effects of glutaraldehyde-polymerized bovine hemoglobin (HbG) on the permeability and integrity of the glomerular filtration barrier (GFB), which is comprised of podocytes, fenestrated endothelium, and the glomerular basement membrane. HbG induced marked proteinuria characterized in part by the loss of high molecular weight proteins, including albumin, immunoglobulin, and transferrin, at 4 and 12 h post-infusion that resolved by 72 h...
April 22, 2018: Toxicology
https://www.readbyqxmd.com/read/29658328/effects-of-enoxaparin-on-intravascular-sclerostin-release-in-healthy-men
#11
Jacek Borawski, Justyna Zoltko, Barbara Labij-Reduta, Ewa Koc-Zorawska, Beata Naumnik
Sclerostin (Scl) is implicated in vascular calcification and angiogenesis and localizes within vasculature. Its molecule incorporates a heparin-binding site that implies also binding to endothelial glycocalyx. We preliminary tested whether intravenous (IV) low-molecular-weight heparin enoxaparin can stimulate intravascular release of this calcification inhibitor in humans. Sixteen male volunteers were injected with a bolus of 1 mg/kg body weight of enoxaparin. After 10 minutes, plasma immunoreactive Scl levels increased uniformly by a mean of 184% versus baseline level of 0...
January 1, 2018: Journal of Cardiovascular Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/29628257/atomic-force-microscopy-of-adsorbed-proteoglycan-mimetic-nanoparticles-toward-new-glycocalyx-mimetic-model-surfaces
#12
Mohammadhasan Hedayati, Matt J Kipper
Blood vessels present a dense, non-uniform, polysaccharide-rich layer, called the endothelial glycocalyx. The polysaccharides in the glycocalyx include polyanionic glycosaminoglycans (GAGs). This polysaccharide-rich surface has excellent and unique blood compatibility. We report new methods for preparing and characterizing dense GAG surfaces that can serve as models of the vascular endothelial glycocalyx. The GAG-rich surfaces are prepared by adsorbing heparin or chondroitin sulfate-containing polyelectrolyte complex nanoparticles (PCNs) to chitosan-hyaluronan polyelectrolyte multilayers (PEMs)...
June 15, 2018: Carbohydrate Polymers
https://www.readbyqxmd.com/read/29624031/fluid-therapy-and-endothelial-glycocalyx-layer-on-the-track-of-the-water-phobic-bigfoot
#13
Jan Benes, Vladimir Cerny
No abstract text is available yet for this article.
April 5, 2018: Minerva Anestesiologica
https://www.readbyqxmd.com/read/29621120/absences-of-endothelial-microvesicle-changes-in-the-presence-of-the-endotheliopathy-of-trauma
#14
Charles E Wade, Nena Matijevic, Yao-Wei W Wang, Erika Gonzalez Rodriguez, Ernesto Lopez, Sisse R Ostrowski, Jessica C Cardenas, Lisa A Baer, Tzu-An Chen, Jeffrey S Tomasek, Hanne H Henriksen, Jakob Stensballe, Bryan A Cotton, John B Holcomb, Pär I Johansson
INTRODUCTION: Severe trauma is accompanied by endothelial glycocalyx disruption, which drives coagulopathy, increasing transfusion requirements and death. This syndrome has been termed traumatic endotheliopathy (EOT). Some have suggested EOT results from endothelial cellular damage and apoptosis. Endothelial microvesicles (EMVs) represent cellular damage. We hypothesized that EOT is associated with endothelial damage and apoptosis resulting in an increase in circulating EMVs. METHODS: Prospective, observational study enrolling severely injured patients...
April 4, 2018: Shock
https://www.readbyqxmd.com/read/29619781/perioperative-implication-of-the-endothelial-glycocalyx
#15
REVIEW
Jong Wook Song, Michael S Goligorsky
The endothelial glycocalyx (EG) is a gel-like layer lining the luminal surface of healthy vascular endothelium. Recently, the EG has gained extensive interest as a crucial regulator of endothelial funtction, including vascular permeability, mechanotransduction, and the interaction between endothelial and circulating blood cells. The EG is degraded by various enzymes and reactive oxygen species upon pro-inflammatory stimulus. Ischemia-reperfusion injury, oxidative stress, hypervolemia, and systemic inflammatory response are responsible for perioperative EG degradation...
April 2018: Korean Journal of Anesthesiology
https://www.readbyqxmd.com/read/29618154/low-plasma-adamts13-activity-is-associated-with-coagulopathy-endothelial-cell-damage-and-mortality-after-severe-paediatric-trauma
#16
Robert T Russell, Jenny K McDaniel, Wenjing Cao, Michelle Shroyer, Brant M Wagener, X Long Zheng, Jean-François Pittet
Decrease of plasma activity of ADAMTS13, a metalloenzyme that cleaves von Willebrand factor (VWF) and prevents adhesion and aggregation of platelets, has been reported early after onset of systemic inflammation resulting from infections and after severe trauma. Here, we determined whether trauma-induced systemic (sterile) inflammation would be associated with a reduction of plasma ADAMTS13 activity in paediatric patients and its association with disease severity and outcome. Paediatric patients ( n  = 106) with severe trauma at a level 1 paediatric trauma centre between 2014 and 2016 were prospectively enrolled...
April 2018: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/29615916/implications-enzymatic-degradation-of-the-endothelial-glycocalyx-on-the-microvascular-hemodynamics-and-the-arteriolar-red-cell-free-layer-of-the-rat-cremaster-muscle
#17
Ozlem Yalcin, Vivek P Jani, Paul C Johnson, Pedro Cabrales
The endothelial glycocalyx is a complex network of glycoproteins, proteoglycans, and glycosaminoglycans; it lines the vascular endothelial cells facing the lumen of blood vessels forming the endothelial glycocalyx layer (EGL). This study aims to investigate the microvascular hemodynamics implications of the EGL by quantifying changes in blood flow hydrodynamics post-enzymatic degradation of the glycocalyx layer. High-speed intravital microscopy videos of small arteries (around 35 μm) of the rat cremaster muscle were recorded at various time points after enzymatic degradation of the EGL...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29608790/increase-in-perfused-boundary-region-of-endothelial-glycocalyx-is-associated-with-higher-prevalence-of-ischemic-heart-disease-and-lesions-of-microcirculation-and-vascular-wall
#18
Alexander Y Gorshkov, Marina V Klimushina, Sergei A Boytsov, Alexander Y Kots, Nadezhda G Gumanova
OBJECTIVE: Perfused boundary region (PBR) characterizes penetration of red blood cells inside glycocalyx and its thickness can have profound impact on microcirculation and other vascular parameters. The goal of our study was to reliably quantify PBR and assess its potential use as a new marker of cardiovascular pathology. METHODS: The study included 208 patients (123 men and 85 women from 40 to 65 years of age) with various grades of cardiovascular SCORE risk index and ischemic heart disease...
April 2, 2018: Microcirculation: the Official Journal of the Microcirculatory Society, Inc
https://www.readbyqxmd.com/read/29604348/leukocyte-endothelial-cell-interaction-is-enhanced-in-podocalyxin-deficient-mice
#19
Gracia Porras, Matilde S Ayuso, Consuelo González-Manchón
The highly sialoglycosylated extracellular domain of podocalyxin (Podxl) is a constituent of the endothelial glycocalyx of most blood vessels but it is unknown if Podxl plays a prominent role in the function of the glycocalyx as a regulator of leukocyte-endothelial adhesion. We have recently found that mice lacking Podxl in the vascular endothelium develop histological lesions compatible with severe vasculitis resulting in organ failure and premature death. In this work, we show that these mice have an increased quantity of resident leukocytes within the peritoneal cavity in both basal and inflammatory conditions...
March 28, 2018: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/29601451/serum-levels-of-syndecan-1-in-patients-with-kawasaki-disease
#20
Li Luo, Siqi Feng, Yao Wu, Ya Su, Fengchuan Jing, Qijian Yi
BACKGROUND: Kawasaki disease (KD) is an acute systemic vasculitis with coronary artery lesions (CALs) being the major concern. Syndecan-1 (SDC-1) is a major core protein expressed on the glycocalyx of endothelial cells. Shed SDC-1 in serum is regarded as a biomarker for endothelial activation or damage. METHODS: In this study, we aimed to determine the serum levels of SDC-1 and evaluate the relationship between serum levels of SDC-1 and the CALs in the acute phase of KD...
March 29, 2018: Pediatric Infectious Disease Journal
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