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Thrombospondin

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https://www.readbyqxmd.com/read/28099838/osteoarthritis-year-in-review-2016-biomarkers-biochemical-markers
#1
REVIEW
A Mobasheri, A-C Bay-Jensen, W E van Spil, J Larkin, M C Levesque
PURPOSE: The aim of this "Year in Review" article is to summarize and discuss the implications of biochemical marker related articles published between the Osteoarthritis Research Society International (OARSI) 2015 Congress in Seattle and the OARSI 2016 Congress in Amsterdam. METHODS: The PubMed/MEDLINE bibliographic database was searched using the combined keywords: 'biomarker' and 'osteoarthritis'. The PubMed/MEDLINE literature search was conducted using the Advanced Search Builder function (http://www...
January 2, 2017: Osteoarthritis and Cartilage
https://www.readbyqxmd.com/read/28097063/interferon-%C3%AE-responses-to-plasmodium-falciparum-vaccine-candidate-antigens-decrease-in-the-absence-of-malaria-transmission
#2
Cyrus Ayieko, Bilha S Ogola, Lyticia Ochola, Gideon A M Ngwena, George Ayodo, James S Hodges, Gregory S Noland, Chandy C John
BACKGROUND: Malaria elimination campaigns are planned or active in many countries. The effects of malaria elimination on immune responses such as antigen-specific IFN- γ responses are not well characterized. METHODS: IFN- γ responses to the P. falciparum antigens circumsporozoite protein, liver stage antigen-1, thrombospondin-related adhesive protein, apical membrane antigen-1, MB2, and merozoite surface protein-1 were tested by ELISA in 243 individuals in highland Kenya in April 2008, October 2008, and April 2009, after a one-year period of interrupted malaria transmission from April 2007 to March 2008...
2017: PeerJ
https://www.readbyqxmd.com/read/28090565/thbs2-is-a-candidate-modifier-of-liver-disease-severity-in-alagille-syndrome
#3
Ellen A Tsai, Melissa A Gilbert, Christopher M Grochowski, Lara A Underkoffler, He Meng, Xiaojie Zhang, Michael M Wang, Hailu Shitaye, Kurt D Hankenson, David Piccoli, Henry Lin, Binita M Kamath, Marcella Devoto, Nancy B Spinner, Kathleen M Loomes
BACKGROUND & AIMS: Alagille syndrome is an autosomal-dominant, multisystem disorder caused primarily by mutations in JAG1, resulting in bile duct paucity, cholestasis, cardiac disease, and other features. Liver disease severity in Alagille syndrome is highly variable, however, factors influencing the hepatic phenotype are unknown. We hypothesized that genetic modifiers may contribute to the variable expressivity of this disorder. METHODS: We performed a genome-wide association study in a cohort of Caucasian subjects with known pathogenic JAG1 mutations, comparing patients with mild vs severe liver disease, followed by functional characterization of a candidate locus...
September 2016: Cellular and Molecular Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/28088772/thrombospondin-immune-regulation-and-the-kidney
#4
Claudio Ponticelli, Hans-Joachim Anders
Most therapeutic attempts to prevent the progression of kidney diseases have been based on interventions to inhibit the production of transforming growth factor-β (TGF-β). Thrombospondins (TSPs) play an important role in activating TGF-β. In the healthy kidney, two TSPs are expressed, TSP1 and TSP2, which exert contrasting effects. While TSP1 is a major activator of TGF-β in renal cells and exerts pro-inflammatory effects both in vitro and in vivo, TSP2 lacks the ability for TGF-β activation but regulates matrix remodeling and inflammation in experimental kidney disease...
January 14, 2017: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/28088271/adamts-3-13-16-and-19-levels-in-patients-with-habitual-abortion
#5
Meryem Kuru Pekcan, Esma Sarıkaya, Aytekin Tokmak, Murat Alışık, Afra Alkan, Gülnur Özakşit, Özcan Erel
A disintegrin-like and metalloproteinase domain with thrombospondin-type 1 motifs (ADAMTS) protein superfamily includes 19 secreted metalloproteases. Proteolytic substrates of ADAMTS enzymes have been linked to reproductive function. The aim of this study was to investigate serum ADAMTS-3, -13, -16, and -19 levels in women with habitual abortions compared with those in healthy controls. A total of 86 women were enrolled in this prospective case-control study. ADAMTS-3, -13, -16, and -19 values were recorded and analyzed in association with demographic and clinical parameters...
January 2017: Kaohsiung Journal of Medical Sciences
https://www.readbyqxmd.com/read/28087247/activity-of-von-willebrand-factor-and-levels-of-vwf-cleaving-protease-adamts13-in-preterm-and-full-term-neonates
#6
T Strauss, N Elisha, B Ravid, N Rosenberg, A Lubetsky, S Levy-Mendelovich, I Morag, U Nowak Göttl, G Kenet
Von Willebrand Factor (VWF) has a central role in primary hemostasis. Its biological activity is related to the size of VWF multimers, spontaneously binding to platelets and inducing circulating microthrombi formation. This process is down-regulated by the VWF cleaving protease ADAMTS13 (A Disintegrin and Metalloprotease with ThromboSpondin motif). To date, information regarding the levels of ADAMTS13 in neonates and preterm infants is scarce. Our aim was to study ADAMTS13, VWF antigen (Ag) and Ristocetin cofactor (RiCof) activity in neonates and evaluate potential correlations with perinatal complications...
December 29, 2016: Blood Cells, Molecules & Diseases
https://www.readbyqxmd.com/read/28081563/interactions-with-astroglia-influence-the-shape-of-the-developing-dendritic-arbor-and-restrict-dendrite-growth-independent-of-promoting-synaptic-contacts
#7
Ginger S Withers, Jennifer R Farley, Jeffrey R Sterritt, Andrés B Crane, Christopher S Wallace
Astroglia play key roles in the development of neurons, ranging from regulating neuron survival to promoting synapse formation, yet basic questions remain about whether astrocytes might be involved in forming the dendritic arbor. Here, we used cultured hippocampal neurons as a simple in vitro model that allowed dendritic growth and geometry to be analyzed quantitatively under conditions where the extent of interactions between neurons and astrocytes varied. When astroglia were proximal to neurons, dendrites and dendritic filopodia oriented toward them, but the general presence of astroglia significantly reduced overall dendrite growth...
2017: PloS One
https://www.readbyqxmd.com/read/28078708/blood-vessel-formation-during-tail-regeneration-in-the-leopard-gecko-eublepharis-macularius-the-blastema-is-not-avascular
#8
Samantha L Payne, Hanna M Peacock, Matthew K Vickaryous
Unique among amniotes, many lizards are able to self-detach (autotomize) their tail and then regenerate a replacement. Tail regeneration involves the formation of a blastema, an accumulation of proliferating cells at the site of autotomy. Over time, cells of the blastema give rise to most of the tissues in the replacement tail. In non-amniotes capable of regenerating (such as urodeles and some teleost fish), the blastema is reported to be essentially avascular until tissue differentiation takes place. For tail regenerating lizards less is known...
January 12, 2017: Journal of Morphology
https://www.readbyqxmd.com/read/28074610/an-in%C3%A2-vitro-model-yields-importin-new-insights-into-chronic-traumatic-encephalopathy-damaged-astrocytes-stop-thrombospondin-to-the-injury-an-editorial-highlight-for-defective-synthesis-and-release-of-astrocytic-thrombospondin-1-mediates-the-neuronal-tdp-43
#9
EDITORIAL
Sausan M Jaber, Brian M Polster
Read the highlighted article 'Defective synthesis and release of astrocytic thrombospondin-1 mediates the neuronal TDP-43 proteinopathy, resulting in defects in neuronal integrity associated with chronic traumatic encephalopathy: in vitro studies' on doi: 10.1111/jnc.13867.
January 10, 2017: Journal of Neurochemistry
https://www.readbyqxmd.com/read/28069696/what-mediates-the-effects-of-thrombospondin-1-in-pulmonary-hypertension-new-evidence-for-a-dual-pronged-role-of-cd47
#10
EDITORIAL
Wolfgang M Kuebler
No abstract text is available yet for this article.
January 2017: Cardiovascular Research
https://www.readbyqxmd.com/read/28066137/betulin-suppressed-interleukin-1%C3%AE-induced-gene-expression-secretion-and-proteolytic-activity-of-matrix-metalloproteinase-in-cultured-articular-chondrocytes-and-production-of-matrix-metalloproteinase-in-the-knee-joint-of-rat
#11
Ho Jong Ra, Hyun Jae Lee, Ho Seung Jo, Dae Cheol Nam, Young Bok Lee, Byeong Hun Kang, Dong Kyu Moon, Dong Hee Kim, Choong Jae Lee, Sun-Chul Hwang
We investigated whether betulin affects the gene expression, secretion and proteolytic activity of matrix metalloproteinase-3 (MMP-3) in primary cultured rabbit articular chondrocytes, as well as in vivo production of MMP-3 in the rat knee joint to evaluate the potential chondroprotective effect of betulin. Rabbit articular chondrocytes were cultured and reverse transcription-polymerase chain reaction (RT-PCR) was used to measure interleukin-1β (IL-1β)-induced gene expression of MMP-3, MMP-1, MMP-13, a disintegrin and metalloproteinase with thrombospondin motifs-4 (ADAMTS-4), ADAMTS-5 and type II collagen...
January 2017: Korean Journal of Physiology & Pharmacology
https://www.readbyqxmd.com/read/28065518/membranous-nephropathy-integrating-basic-science-into-improved-clinical-management
#12
REVIEW
Daniel C Cattran, Paul E Brenchley
Idiopathic membranous nephropathy (INM) remains a common cause of the nephrotic syndrome in adults. The autoimmune nature of IMN was clearly delineated in 2009 with the identification of the glomerular-deposited IgG to be a podocyte receptor, phospholipase A2 receptor (PLA2R) in 70% to 75% of cases. This anti-PLA2R autoantibody, predominantly the IgG4 subclass, has been quantitated in serum using an enzyme-linked immunosorbent assay and has been used to aid diagnosis and monitor response to immunosuppressive therapy...
January 5, 2017: Kidney International
https://www.readbyqxmd.com/read/28059487/%C3%AE-tocopheryl-phosphate-induces-vegf-expression-via-cd36-pi3k%C3%AE-in-thp-1-monocytes
#13
Jean-Marc Zingg, Angelo Azzi, Mohsen Meydani
The CD36 scavenger receptor binds several ligands and mediates ligand uptake and ligand-dependent signal transduction and gene expression, events that may involve CD36 internalization. Here we show that CD36 internalization in THP-1 monocytes is triggered by α-tocopherol (αT) and more strongly by α-tocopheryl phosphate (αTP) and EPC-K1, a phosphate diester of αTP and L-ascorbic acid. αTP-triggered CD36 internalization is prevented by the specific covalent inhibitor of selective lipid transport by CD36, sulfo-N-succinimidyl oleate (SSO)...
January 6, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28055145/conformational-quiescence-of-adamts13-prevents-proteolytic-promiscuity-comment
#14
W J Cao, X L Zheng
Von Willebrand factor (VWF) is the only substrate identified for ADAMTS13 to date [1]. How ADAMTS13 achieves such remarkable substrate specificity remains a mystery. Previous studies demonstrated that carboxyl-terminal domains including 2-8(th) thrombospondin type 1 repeat (TSP1) and CUB domains are dispensable for cleavage of VWF substrate under various conditions [2, 3]. However, these carboxyl-terminal domains were later found to exhibit a disulfide bond reducing activity [4] and to interact with globular VWF via its D4 domain [5]...
January 5, 2017: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/28054366/the-role-of-molecular-pain-biomarkers-in-temporomandibular-joint-internal-derangement
#15
REVIEW
Malin Ernberg
There is evidence that low-grade inflammation may be responsible for pain and development of degenerative changes in temporomandibular joint internal derangement. This article reviews the current knowledge of the molecular mechanisms behind TMJ internal derangements. A non-systematic search was carried out in PubMed, Embase, and the Cochrane library for studies regarding pathophysiological mechanisms behind internal derangements focusing on pain mediating inflammatory and cartilage degrading molecules. Recent data suggests that release of cytokines may be the key event for pain and cartilage destruction in TMJ internal derangements...
January 5, 2017: Journal of Oral Rehabilitation
https://www.readbyqxmd.com/read/28045898/transcriptional-and-post-transcriptional-regulation-of-thrombospondin-1-expression-a-computational-model
#16
Chen Zhao, Jeffrey S Isenberg, Aleksander S Popel
Hypoxia is an important physiological stress signal that drives angiogenesis, the formation of new blood vessels. Besides an increase in the production of pro-angiogenic signals such as vascular endothelial growth factor (VEGF), hypoxia also stimulates the production of anti-angiogenic signals. Thrombospondin-1 (TSP-1) is one of the anti-angiogenic factors whose synthesis is driven by hypoxia. Cellular synthesis of TSP-1 is tightly regulated by different intermediate biomolecules including proteins that interact with hypoxia-inducible factors (HIFs), transcription factors that are activated by receptor and intracellular signaling, and microRNAs which are small non-coding RNA molecules that function in post-transcriptional modification of gene expression...
January 2017: PLoS Computational Biology
https://www.readbyqxmd.com/read/28042134/upregulation-of-thrombospondin-1-expression-in-synovial-tissues-and-plasma-of-rheumatoid-arthritis-role-of-transforming-growth-factor-%C3%AE-1-toward-fibroblast-like-synovial-cells
#17
(no author information available yet)
No abstract text is available yet for this article.
January 2017: Journal of Rheumatology
https://www.readbyqxmd.com/read/28039493/new-markers-in-atherosclerosis-thrombospondin-2-thbs-2-and-leukocyte-cell-derived-chemotaxin-2-lect-2-an-immunohistochemical-study
#18
Fatma Cavide Sonmez, Pelin Yildiz, Muhammad Salman Akhtar, Cemalettin Aydin, Osman Sonmez, Nuray Ay, Mehmet Akif Vatankulu
BACKGROUND Current research investigating the role of THBS2 and LECT-2 in atherogenesis is very limited. Therefore, we designed this study to demonstrate the role of THBS-2 and LECT-2 in atherosclerosis at the tissue level in fresh specimens. MATERIAL AND METHODS A total of 32 patients who underwent coronary bypass surgery were enrolled. Aortic wall punch biopsies were obtained at the site of proximal aortosaphenous bypass graft anastomosis. A specimen of left internal mammarian artery (LiMA) was taken from the segment just proximal to its anastomosis...
December 31, 2016: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28035718/thsd7a-expression-in-human-cancer
#19
Phillip R Stahl, Elion Hoxha, Thorsten Wiech, Cornelia Schröder, Ronald Simon, Rolf A K Stahl
We recently described a case of a Thrombospondin Type-1 Domain containing 7A (THSD7A) associated membranous nephropathy in a female patient who was synchronously suffering from a THSD7A-positive malignancy. We here investigated the role of THSD7A as a new potential tumor antigen by evaluating over 20,000 tissue spots in more than 70 different tumor entities by immunohistochemistry using tissue microarrays. THSD7A expression was highly variable in different neoplasias with differing staining patterns. Both gain and loss of THSD7A expression compared to expression status in non-tumor tissue were linked to tumor-specific markers in the different tumor entities and were of prognostic value...
December 30, 2016: Genes, Chromosomes & Cancer
https://www.readbyqxmd.com/read/28033649/thrombospondin-derived-peptide-attenuates-sj%C3%A3-gren-s-syndrome-associated-ocular-surface-inflammation-in-mice
#20
Laura Contreras-Ruiz, Fayaz A Mir, Bruce Turpie, Sharmila Masli
Sjögren's syndrome is a second most common rheumatic disease in which autoimmune response targets exocrine glands (salivary and lacrimal glands) resulting in clinical symptoms of dry mouth and dry eye. Inflammation of the lacrimal gland induces tear abnormalities that contribute to the inflammation of the ocular surface, which includes ocular mucosa. Thrombospondin-1 (TSP-1) plays a critical regulatory role in the ocular mucosa and as such TSP-1-/- mice spontaneously develop chronic ocular surface inflammation associated with Sjögren's syndrome (SS)...
December 29, 2016: Clinical and Experimental Immunology
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