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Syndecan

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https://www.readbyqxmd.com/read/28703800/killing-two-birds-with-one-stone-dual-blockade-of-integrin-and-fgf-signaling-through-targeting-syndecan-4-in-postoperative-capsular-opacification
#1
Yingyan Qin, Yi Zhu, Furong Luo, Chuan Chen, Xiaoyun Chen, Mingxing Wu
The most common complication after cataract surgery is postoperative capsular opacification, which includes anterior capsular opacification (ACO) and posterior capsular opacification (PCO). Increased adhesion of lens epithelial cells (LECs) to the intraocular lens material surface promotes ACO formation, whereas proliferation and migration of LECs to the posterior capsule lead to the development of PCO. Cell adhesion is mainly mediated by the binding of integrin to extracellular matrix proteins, while cell proliferation and migration are regulated by fibroblast growth factor (FGF)...
July 13, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28700908/endothelial-glycocalyx-mediated-nitric-oxide-production-in-response-to-selective-afm-pulling
#2
Anne Marie W Bartosch, Rick Mathews, John M Tarbell
Nitric oxide (NO) is a regulatory molecule in the vascular system and its inhibition due to endothelial injury contributes to cardiovascular disease. The glycocalyx is a thin layer of glycolipids, glycoproteins, and proteoglycans on the surface of mammalian epithelial cells. Extracellular forces are transmitted through the glycocalyx to initiate intracellular signaling pathways. In endothelial cells (ECs), previous studies have shown the glycocalyx to be a significant mediator of NO production; degradation of the endothelial glycocalyx layer (EGL) drastically reduces EC production of NO in response to fluid shear stress...
July 11, 2017: Biophysical Journal
https://www.readbyqxmd.com/read/28699397/glioblastoma-exosomes-for-therapeutic-angiogenesis-in-peripheral-ischemia
#3
Anthony Monteforte, Brian Lam, Michael B Sherman, Kayla Henderson, Andrew Sligar, Adrianne Spencer, Brian Tang, Andrew Dunn, Aaron B Baker
Peripheral ischemia as a result of occlusive vascular disease is a widespread problem in patients over the age of 65. Angiogenic therapies that can induce microvascular growth have great potential for providing a long lasting solution for patients with ischemia and would provide and an appealing alternative to surgical and percutaneous interventions. However, many angiogenic therapies have seen poor efficacy in clinical trials, suggesting that patients with long term peripheral ischemia have considerable therapeutic resistance to angiogenic stimuli...
July 12, 2017: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/28697004/experimental-models-of-endotheliopathy-impact-of-shock-severity
#4
Nikolaus Hofmann, Johannes Zipperle, Mohammad Jafarmadar, Mostafa Ashmwe, Claudia Keibl, Carina Penzenstadler, Martin Ponschab, Behnaz Jafarmadar, Heinz Redl, Soheyl Bahrami, Herbert Schöchl
BACKGROUND: Hemorrhagic shock (HS) followed by resuscitation is often associated with sympatho-adrenal activation (SAA) and endothelial damage (ED). OBJECTIVE: We aimed to a) evaluate the impact of HS alone on the magnitude of SAA and consecutive ED and b) characterize potential targets for a standardized and reproducible model of HS-induced endotheliopathy in rats. METHODS: Rats were subjected to either a volume controlled HS (40% of total blood volume: v-HS group) or to a lab guided HS (l-HS) targeting base deficit (BD) >5...
July 10, 2017: Shock
https://www.readbyqxmd.com/read/28679861/enhanced-chemosensitization-of-anoikis-resistant-melanoma-cells-through-syndecan-2-upregulation-upon-anchorage-independency
#5
TingTing Tseng, WuChing Uen, JenChih Tseng, ShaoChen Lee
Syndecan family proteins are heparan sulfate proteoglycans, which involved in various cellular activities and associating with metastatic potential and chemosensitivity of tumor cells. Melanoma is one of malignant tumors with poor prognosis upon metastasis. Previously, we had shown that melanoma cells remained survived under cell detachment, which was similar to the initial steps of tumor metastasis. Downregulation of syndecan-1 and upregulation of syndecan-2 in melanoma A375 cells were observed by different suspension conditions...
June 27, 2017: Oncotarget
https://www.readbyqxmd.com/read/28661485/osteoblastic-heparan-sulfate-glycosaminoglycans-control-bone-remodeling-by-regulating-wnt-signaling-and-the-crosstalk-between-bone-surface-and-marrow-cells
#6
Rafik Mansouri, Yohann Jouan, Eric Hay, Claudine Blin-Wakkach, Monique Frain, Agnès Ostertag, Carole Le Henaff, Caroline Marty, Valérie Geoffroy, Pierre J Marie, Martine Cohen-Solal, Dominique Modrowski
Stimulating bone formation is an important challenge for bone anabolism in osteoporotic patients or to repair bone defects. The osteogenic properties of matrix glycosaminoglycans (GAGs) have been explored; however, the functions of GAGs at the surface of bone-forming cells are less documented. Syndecan-2 is a membrane heparan sulfate proteoglycan that is associated with osteoblastic differentiation. We used a transgenic mouse model with high syndecan-2 expression in osteoblasts to enrich the bone surface with cellular GAGs...
June 29, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28659919/the-%C3%AE-d-endoglucuronidase-heparanase-is-a-danger-molecule-that-drives-systemic-inflammation-and-correlates-with-clinical-course-after-open-and-endovascular-thoracoabdominal-aortic-aneurysm-repair-lessons-learnt-from-mice-and-men
#7
Lukas Martin, Alexander Gombert, Jianmin Chen, Julia Liebens, Julia Verleger, Johannes Kalder, Gernot Marx, Michael Jacobs, Christoph Thiemermann, Tobias Schuerholz
Thoracoabdominal aortic aneurysm (TAAA) is a highly lethal disorder requiring open or endovascular TAAA repair, both of which are rare, but extensive and complex surgical procedures associated with a significant systemic inflammatory response and high post-operative morbidity and mortality. Heparanase is a β-d-endoglucuronidase that remodels the endothelial glycocalyx by degrading heparan sulfate in many diseases/conditions associated with systemic inflammation including sepsis, trauma, and major surgery. We hypothesized that (a) perioperative serum levels of heparanase and heparan sulfate are associated with the clinical course after open or endovascular TAAA repair and (b) induce a systemic inflammatory response and renal injury/dysfunction in mice...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28659186/low-volume-resuscitation-with-normal-saline-is-associated-with-microvascular-endothelial-dysfunction-after-hemorrhage-in-rats-compared-to-colloids-and-balanced-crystalloids
#8
Luciana N Torres, Kevin K Chung, Christi L Salgado, Michael A Dubick, Ivo P Torres Filho
BACKGROUND: Restoration of endothelial glycocalyx (EG) barrier may be an essential therapeutic target for successful resuscitation. The aim of this study was to compare in vivo the effects of resuscitation with normal saline (NS) to lactated Ringer's solution (LR), 5% albumin and fresh frozen plasma (FFP) on their ability to maintain EG and barrier function integrity, mitigate endothelial injury and inflammation, and restore vascular homeostasis after hemorrhagic shock. METHODS: Anesthetized rats (N = 36) were subjected to hemorrhagic shock (bled 40% of total blood volume), followed by resuscitation with 45 ml/kg NS or LR, or 15 ml/kg 5% albumin or FFP...
June 29, 2017: Critical Care: the Official Journal of the Critical Care Forum
https://www.readbyqxmd.com/read/28638231/pleiotrophin-and-n-syndecan-promote-perineural-invasion-and-tumor-progression-in-an-orthotopic-mouse-model-of-pancreatic-cancer
#9
Jun Yao, Lu-Lin Zhang, Xu-Mei Huang, Wen-Yao Li, She-Gan Gao
AIM: To detect the expression of pleiotrophin (PTN) and N-syndecan in pancreatic cancer and analyze their association with tumor progression and perineural invasion (PNI). METHODS: An orthotopic mouse model of pancreatic cancer was created by injecting tumor cells subcapsularly in a root region of the pancreas beneath the spleen. Pancreatic cancer tissues were taken from 36 mice that survived for more than 90 d. PTN and N-syndecan proteins were detected by immunohistochemistry and analyzed for their correlation with pathological features, PNI, and prognosis...
June 7, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28634370/microbial-antigens-stimulate-metalloprotease-7-secretion-in-human-b-lymphocytes-using-mtor-dependent-and-independent-pathways
#10
Mohamed F Ali, Harika Dasari, Virginia P Van Keulen, Divi Cornec, George Vasmatzis, Tobias Peikert, Eva M Carmona
Metalloproteinases (MMPs) contribute to tissue remodeling and acute inflammation not only by degrading extracellular matrix proteins but also by controlling the influx of chemokines through the regulation and shedding of syndecans. B-lymphocytes, in addition to their well-known function as antibody producing cells, participate in the innate immune response by secreting inflammatory cytokines and chemokines. However, there is little information about the role of B-lymphocytes in the regulation of MMPs; consequently, herein we investigated whether activated human circulating B-lymphocytes contributed to the secretion of MMPs...
June 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28624114/higher-prevalence-of-chronic-endometritis-in-women-with-endometriosis-a-possible-etiopathogenetic-link
#11
Ettore Cicinelli, Giuseppe Trojano, Marcella Mastromauro, Antonella Vimercati, Marco Marinaccio, Paola Carmela Mitola, Leonardo Resta, Dominique de Ziegler
OBJECTIVE: To evaluate the association between endometriosis end chronic endometritis (CE) diagnosed by hysteroscopy, conventional histology, and immunohistochemistry. DESIGN: Case-control study. SETTING: University hospital. PATIENT(S): Women with and without endometriosis who have undergone hysterectomy. INTERVENTION(S): Retrospective evaluation of 78 women who have undergone hysterectomy and were affected by endometriosis and 78 women without endometriosis...
June 14, 2017: Fertility and Sterility
https://www.readbyqxmd.com/read/28623309/fibronectin-promotes-directional-persistence-in-fibroblast-migration-through-interactions-with-both-its-cell-binding-and-heparin-binding-domains
#12
Dimitris Missirlis, Tamás Haraszti, Horst Kessler, Joachim P Spatz
The precise mechanisms through which insoluble, cell-adhesive ligands induce and regulate directional cell migration remain obscure. We recently demonstrated that elevated surface density of physically adsorbed plasma fibronectin (FN) promotes high directional persistence in fibroblast migration. While cell-FN association through integrins α5β1 and αvβ3 was necessary, substrates that selectively engaged these integrins did not support the phenotype. We here show that high directional persistence necessitates a combination of the cell-binding and C-terminal heparin-binding domains of FN, but does not require the engagement of syndecan-4 or integrin α4β1...
June 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28619831/stool-dna-test-of-methylated-syndecan-2-for-the-early-detection-of-colorectal-neoplasia
#13
Feng Niu, Jialing Wen, Xinhui Fu, Chujun Li, Rongsong Zhao, Shan Wu, Hao Yu, Xianglin Liu, Xia Zhao, Side Liu, Xinying Wang, Jianping Wang, Hongzhi Zou
BACKGROUND: While the incidence of colorectal cancer (CRC) is steadily increasing, screening for CRC with conventional approaches is not routinely performed in China. Noninvasive screening methods are attractive options to resolve this issue. Syndecan-2 (SDC2) is frequently methylated in CRC. However, the value of a stool test of methylated SDC2 for the detection of CRC is unknown. METHODS: Methylation status of SDC2 was tested in cell lines and 398 colorectal tissue samples, and further evaluated with 497 stool samples, including 196 from CRC patients, 122 from adenoma patients, and 179 from normal individuals, using real-time methylation-specific PCR (qMSP)...
June 15, 2017: Cancer Epidemiology, Biomarkers & Prevention
https://www.readbyqxmd.com/read/28614141/role-of-hemorrhagic-shock-in-experimental-polytrauma
#14
Stephanie Denk, Sebastian Weckbach, Philipp Eisele, Christian K Braun, Rebecca Wiegner, Julia J Ohmann, Lisa Wrba, Felix M Hoenes, Philipp Kellermann, Peter Radermacher, Ulrich Wachter, Sebastian Hafner, Oscar McCook, Anke Schultze, Annette Palmer, Sonja Braumüller, Florian Gebhard, Markus Huber-Lang
Hemorrhagic shock (HS) after tissue trauma increases the complication and mortality rate of polytrauma (PT) patients. Although several murine trauma models have been introduced, there is a lack of knowledge about the exact impact of an additional HS. We hypothesized that HS significantly contributes to organ injury, which can be reliably monitored by detection of specific organ damage markers.Therefore we established a novel clinically relevant PT plus HS model in C57BL/6 mice which were randomly assigned to control, HS, PT or PT+HS procedure (n = 8 per group)...
June 13, 2017: Shock
https://www.readbyqxmd.com/read/28591008/plasma-resuscitation-improved-survival-in-a-cecal-ligation-and-puncture-rat-model-of-sepsis
#15
Ronald Chang, John B Holcomb, Par I Johansson, Shibani Pati, Martin A Schreiber, Charles E Wade
BACKGROUND: The paradigm shift from crystalloid to plasma resuscitation of traumatic hemorrhagic shock has improved patient outcomes due in part to plasma-mediated reversal of catecholamine and inflammation-induced endothelial injury, decreasing vascular permeability and attenuating organ injury. Since sepsis induces a similar endothelial injury as seen in hemorrhage, we hypothesized that plasma resuscitation would increase 48-hour survival in a rat sepsis model. METHODS: Adult male Sprague-Dawley rats (375-425 g) were subjected to 35% cecal ligation and puncture (CLP) (t = 0 h)...
June 6, 2017: Shock
https://www.readbyqxmd.com/read/28585128/expression-of-il-17-and-syndecan-1-in-nasal-polyps-and-their-correlation-with-nasal-polyps
#16
Guo-Qing Gong, Fang-Fang Ren, Yan-Jun Wang, Lang Wan, Shan Chen, Jie Yuan, Chuan-Mei Yang, Bang-Hua Liu, Wei-Jia Kong
Nasal polyp (NP) is a common chronic inflammatory disease of the nasal cavity and sinuses. Although some authors have suggested that NP is related to inflammatory factors such as interleukin (IL)-1β, IL-5, IL-8, granulocyte-macrophage colony-stimulating factor (GM-CSF), tumor necrosis factor (TNF)-α, and IL-17, the mechanisms underlying the pathogenesis and progression of NP remain obscure. This study investigated the expression and distribution of IL-17 and syndecan-1 in NP, and explored the roles of these two molecules in the pathogenesis of eosinophilic chronic rhinosinusitis with nasal polyps (Eos CRSwNP) and non-Eos CRSwNP...
June 2017: Journal of Huazhong University of Science and Technology. Medical Sciences
https://www.readbyqxmd.com/read/28579548/syndecan-1-a-quantitative-marker-for-the-endotheliopathy-of-trauma
#17
Erika Gonzalez Rodriguez, Sisse R Ostrowski, Jessica C Cardenas, Lisa A Baer, Jeffrey S Tomasek, Hanne H Henriksen, Jakob Stensballe, Bryan A Cotton, John B Holcomb, Pär I Johansson, Charles E Wade
BACKGROUND: Endothelial glycocalyx breakdown elicits syndecan-1 shedding, and traumatic endotheliopathy (EoT). We hypothesized that a cutoff syndecan-1 level can identify patients with endothelial dysfunction who would have poorer outcomes. STUDY DESIGN: Prospective observational study; trauma patients with the highest level of activation admitted during July 2011-September 2013 were eligible. We recorded demographics, injury type/severity (ISS), physiology and outcome data, and quantified syndecan-1 and soluble thrombomodulin from plasma with ELISAs...
June 1, 2017: Journal of the American College of Surgeons
https://www.readbyqxmd.com/read/28576860/coordination-of-heparan-sulfate-proteoglycans-with-wnt-signaling-to-control-cellular-migrations-and-positioning-in-caenorhabditis-elegans
#18
Kristian Saied-Santiago, Robert A Townley, John D Attonito, Dayse S da Cunha, Carlos A Diaz-Balzac, Eillen Tecle, Hannes E Bülow
Heparan sulfates are linear polysaccharides with complex modification patterns, which are covalently bound via conserved attachment sites to core proteins to form heparan sulfate proteoglycans (HSPGs). HSPGs regulate many aspects of the development and function of the nervous system, including cell migration, morphology, and network connectivity. HSPGs function as co-factors for multiple signaling pathways, including the Wnt signaling molecules and their Frizzled receptors. To investigate the functional interactions among the HSPG and Wnt networks, we conducted genetic analyses of each, and also between these networks using five cellular migrations in the nematode Caenorhabditis elegans We find that HSPG core proteins act genetically in a combinatorial fashion dependent on the cellular contexts...
June 2, 2017: Genetics
https://www.readbyqxmd.com/read/28574293/evaluation-of-maternal-serum-hypoxia-inducible-factor-1%C3%AE-progranulin-and-syndecan-1-levels-in-pregnancies-with-early-and-late-onset-preeclampsia
#19
Ebru Alici Davutoğlu, Asuman Akkaya Firat, Ayşegül Ozel, Nevin Yılmaz, Isil Uzun, Ilkbal Temel Yuksel, Riza Madazlı
OBJECTIVE: To determine the serum levels of HIF-1 α, progranulin, and syndecan-1 in preeclampsia (PE) and normal pregnancy, and to compare whether these markers demonstrate any difference between early-onset PE (EO-PE) and late-onset PE (LO-PE). METHODS: This cross-sectional study was conducted on 27 women with EO-PE, 27 women with LO-PE, and 26 healthy normotensive pregnant controls matched for gestational age. Maternal levels of serum HIF-1 α, progranulin, and syndecan-1 were measured with the use of an enzyme-linked immunosorbent assay kit...
June 2, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28571915/3d-spheroids-what-can-they-tell-us-about-pancreatic-ductal-adenocarcinoma-cell-phenotype
#20
Nicoletta Gagliano, Chiarella Sforza, Michele Sommariva, Alessandra Menon, Vincenzo Conte, Patrizia Sartori, Patrizia Procacci
We aimed at analyzing the effect of the 3D-arrangement on the expression of some genes and proteins which play a key role in pancreatic adenocarcinoma (PDAC) progression in HPAF-II, HPAC and PL45 PDAC cells cultured in either 2D-monolayers or 3D-spheroids. Cytokeratins 7, 8, 18, 19 were differently expressed in 3D-spheroids compared to 2D-monolayers. Syndecan 1 was upregulated in HPAF-II and PL45 3D-spheroids, and downregulated in HPAC. Heparanase mRNA levels were almost unchanged in HPAF-II, and increased in HPAC and PL45 3D-spheroids...
May 29, 2017: Experimental Cell Research
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