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chondroitin sulfate

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https://www.readbyqxmd.com/read/29138239/expanding-the-chondroitin-glycoproteome-of-caenorhabditis-elegans
#1
Fredrik Noborn, Alejandro Gomez Toledo, Waqas Nasir, Jonas Nilsson, Tabea Dierker, Lena Kjellén, Göran Larson
Chondroitin sulfate proteoglycans (CSPGs) are important structural components of connective tissues in essentially all metazoan organisms. In vertebrates, CSPGs are involved also in more specialized processes such as neurogenesis and growth factor signaling. In invertebrates, however, knowledge of CSPGs core proteins and proteoglycan-related functions is relatively limited, even for Caenorhabditis elegans. This nematode produces large amounts of non-sulfated chondroitin in addition to low-sulfated chondroitin sulfate chains...
November 14, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/29131431/synthesis-of-fucosylated-chondroitin-sulfate-glycoclusters-a-robust-route-to-novel-anticoagulant-agents
#2
Xiao Zhang, Wang Yao, Xiaojiang Xu, Huifang Sun, Jinhua Zhao, Xiangbao Meng, Mingyi Wu, Zhongjun Li
Fucosylated chondroitin sulfate (FuCS) is a structurally distinct glycosaminoglycan with excellent anticoagulant activity. Studies show that FuCS and its depolymerized fragments exhibit different anticoagulant mechanism from heparin derivatives, with decreased risks of adverse effects and bleeding. However, further exploitation has been hindered by the scarcity of structurally defined oligosaccharides. Herein we report a facile method to synthesize the repeating trisaccharide unit of FuCS based on the degradation of chondroitin sulfate polymers...
November 13, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/29130393/wound-healing-effects-of-human-dermal-components-with-gelatin-dressing
#3
Hyun-Jun Jang, Yu-Mi Kim, Bo-Young Yoo, Young-Kwon Seo
There have been numerous investigations regarding various types of dressings and artificial dermis of solid form, yet limited research and development on paste types, such as hydrogels with dermal powder, have ensued. In this study, we compared the in vivo wound healing effects of gelatin paste containing dermal powder to a collagen type I/chondroitin 6-sulfate (coll/chondroitin) sponge and gelatin alone, after 48 days post grafting, in a skin wound rat model. In the dermis powder/gelatin paste-treated group, wound area contraction was minimized 50%, while in the gelatin and coll/chondroitin sponge groups, the initial area contracted 83-85% and 79-85%, respectively...
January 1, 2017: Journal of Biomaterials Applications
https://www.readbyqxmd.com/read/29125590/novel-insights-into-antiviral-gene-regulation-of-red-swamp-crayfish-procambarus-clarkii-infected-with-white-spot-syndrome-virus
#4
Shaokui Yi, Yanhe Li, Linlin Shi, Long Zhang
White spot syndrome virus (WSSV), one of the major pathogens of Procambarus clarkii, has caused severe disruption to the aquaculture industry of P. clarkii in China. To reveal the gene regulatory mechanisms underlying WSSV infection, a comparative transcriptome analysis was performed among WSSV-infected susceptible individuals (GS), viral resistant individuals (GR), and a non-infected control group (GC). A total of 61,349 unigenes were assembled from nine libraries. Subsequently, 515 and 1033 unigenes exhibited significant differential expression in sensitive and resistant crayfish individuals compared to the control group (GC)...
November 10, 2017: Genes
https://www.readbyqxmd.com/read/29124565/glycosaminoglycans-from-fish-swim-bladder-isolation-structural-characterization-and-bioactive-potential
#5
Yongxi Pan, Peipei Wang, Fuming Zhang, Yanlei Yu, Xing Zhang, Lei Lin, Robert J Linhardt
The swim bladder of fish is an internal gas-filled organ that allows fish to control their buoyancy and swimming depth. Fish maws (the dried swim bladders of fish) have been used over many centuries as traditional medicines, tonics and a luxurious gourmet food in China and Southeast Asia. Little is known about the structural information of polysaccharides comprising this important functional material of fish tissue. In the present study, the total glycosaminoglycan (GAG) from fish maw was characterized. Two GAGs were identified, chondroitin sulfate (CS, having a molecular weight of 18-40 kDa) and heparan sulfate (HS), corresponding to 95% and 5% of the total GAG, respectively...
November 10, 2017: Glycoconjugate Journal
https://www.readbyqxmd.com/read/29123031/structure-function-characterization-of-three-human-antibodies-targeting-the-vaccinia-virus-adhesion-molecule-d8
#6
Michael H Matho, Andrew Schlossman, Iuliia M Gilchuk, Greg Miller, Zbigniew Mikulski, Matthias Hupfer, Jing Wang, Aruna Bitra, Xianghzi Meng, Yan Xiang, Tom Kaever, Tzanko Doukov, Klaus Ley, Shane Crotty, Bjoern Peters, Linda C Hsieh-Wilson, James E Crowe, Dirk M Zajonc
Vaccinia virus (VACV) envelope protein D8 is one of three glycosaminoglycan adhesion molecules and binds to the linear polysaccharide chondroitin sulfate (CS). D8 is also a target for neutralizing antibody responses that are elicited by the smallpox vaccine, which has enabled the first eradication of a human viral pathogen and is a useful model for studying antibody responses. However, to date, VACV epitopes targeted by human antibodies have not been characterized at atomic resolution. Here, we characterized the binding properties of several human anti-D8 antibodies and determined the crystal structures of three VACV-MAb variants, VACV-66, VACV-138, and VACV-304, separately bound to D8...
November 9, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/29121102/histopathologic-and-immunohistochemical-features-of-capsular-tissue-around-failed-ahmed-glaucoma-valves
#7
Alka Mahale, Fatma Fikri, Khitam Al Hati, Sami Al Shahwan, Ibrahim Al Jadaan, Hind Al Katan, Rajiv Khandekar, Azza Maktabi, Deepak P Edward
Impervious encapsulation around Ahmed glaucoma valve (AGV) results in surgical failure raising intraocular pressure (IOP). Dysregulation of extracellular matrix (ECM) molecules and cellular factors might contribute to increased hydraulic resistance to aqueous drainage. Therefore, we examined these molecules in failed AGV capsular tissue. Immunostaining for ECM molecules (collagen I, collagen III, decorin, lumican, chondroitin sulfate, aggrecan and keratan sulfate) and cellular factors (αSMA and TGFβ) was performed on excised capsules from failed AGVs and control tenon's tissue...
2017: PloS One
https://www.readbyqxmd.com/read/29118552/drugs-for-improving-esophageal-mucosa-defense-where-are-we-now-and-where-are-we-going
#8
REVIEW
Edoardo Savarino, Patrizia Zentilin, Elisa Marabotto, Gaia Pellegatta, Claudia Coppo, Matteo Brunacci, Pietro Dulbecco, Vincenzo Savarino
In the past, the attention of physiologists and doctors has been mainly focused on the key role of acid in the pathogenesis of gastroesophageal reflux disease (GERD), but increasing evidence that 20-40% of reflux patients respond not at all or only partially to proton pump inhibitors (PPIs) has underlined the concept that factors other than acid are implicated in its development and the elicitation of symptoms. Among these, impaired mucosal integrity, particularly in most patients with non-erosive reflux disease, has recently been reincluded and the reinforcement of defensive mechanisms and/or its protection has been reappointed as a renewed therapeutic target for the management of GERD patients...
2017: Annals of Gastroenterology: Quarterly Publication of the Hellenic Society of Gastroenterology
https://www.readbyqxmd.com/read/29113887/injectable-silk-fibroin-hydrogels-functionalized-with-microspheres-as-adult-stem-cells-carrier-systems
#9
Matteo Ciocci, Ilaria Cacciotti, Dror Seliktar, Sonia Melino
Hydrogels are good candidate materials for cell delivery scaffolds because they can mimic the physical, chemical, electrical and biological properties of most of the native tissues. In this study, composite biosynthetic hydrogels were produced by combining the bio-functionality of silk fibroin (SF) with the structural versatility of polyethylene-glycol-diacrylated (PEGDa). The formation of a photopolymerizable PEGDa-SF hydrogel (PSFHy) was optimized for 3D-cell culture. Functionalization of the 3D-PSFHy with protein microspheres (MS) was required to increase the porosity and cell-adhesive properties of the material...
November 4, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29111696/sequencing-the-dermatan-sulfate-chain-of-decorin
#10
Yanlei Yu, Jiana Duan, Franklin E Leach, Toshihiko Toida, Kyohei Higashi, Hong Zhang, Fuming Zhang, I Jonathan Amster, Robert J Linhardt
Glycomics represents one of the last frontiers and most challenging in omic analysis. Glycosylation occurs in the endoplasmic reticulum and the Golgi organelle and its control is neither well-understood nor predictable based on proteomic or genomic analysis. One of the most structurally complex classes of glycoconjugates is the proteoglycans (PGs) and their glycosaminoglycan (GAG) side chains. Previously, our laboratory solved the structure of the chondroitin sulfate chain of the bikunin PG. The current study examines the much more complex structure of the dermatan sulfate GAG chain of decorin PG...
November 13, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/29102790/preparation-and-antioxidant-properties-of-low-molecular-holothurian-glycosaminoglycans-by-h2o2-ascorbic-acid-degradation
#11
Jiaojiao Mou, Cong Wang, Qiang Li, Xiaohui Qi, Jie Yang
An effective method of free radical degradation induced by H2O2/ascorbic acid, which was different from previously reported H2O2/Cu(2+) method, was developed to depolymerize a novel glycosaminoglycan from Holothuria mexicana (HmG). The results indicated that the degradation efficiency increased with the reduced solution concentration, increased H2O2 concentration and ascorbic acid concentration. The chemical composition and structure of different molecular HmG were analyzed. The results showed that the primary structure and sulfate esters were well reserved during the degradation...
November 1, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29102626/unveiling-the-structure-of-sulfated-fucose-rich-polysaccharides-via-nuclear-magnetic-resonance-spectroscopy
#12
REVIEW
Paulo As Mourão, Eduardo Vilanova, Paulo Ag Soares
Sulfated fucans from marine invertebrates are composed of regular repetitive fucose building-blocks with sulfation patterns differing in a species-specific manner. These polysaccharides can act as mediators of the acrosome reaction of sea-urchins or play a structural role in the body-wall of sea-cucumbers. Other fucose-rich polysaccharides found in the body-wall of sea-cucumbers are the fucosylated chondroitin sulfates composed of a vertebrate-like chondroitin sulfate decorated with species-specific fucose branches...
November 2, 2017: Current Opinion in Structural Biology
https://www.readbyqxmd.com/read/29099173/discovery-of-a-small-molecule-modulator-of-glycosaminoglycan-sulfation
#13
Sheldon T Cheung, Michelle S Miller, Reynand Pacoma, Jason Roland, Jian Liu, Andrew M Schumacher, Linda C Hsieh-Wilson
Glycosaminoglycans (GAGs) play critical roles in diverse processes ranging from viral infection to neuroregeneration. Their regiospecific sulfation patterns, which are generated by sulfotransferases, are key structural determinants that underlie their biological activity. Small-molecule modulators of these sulfotransferases could serve as powerful tools for understanding the physiological functions of GAGs, as well as potential therapeutic leads for human diseases. Here, we report the development of the first cell-permeable, small-molecule inhibitor selec-tive for GAG sulfotransferases, which was obtained using a high-throughput screen targeted against Chst15, the sulfotransferase responsible for biosynthesis of chondroitin sulfate-E (CS-E)...
November 3, 2017: ACS Chemical Biology
https://www.readbyqxmd.com/read/29096932/does-incorporating-collagen-and-chondroitin-sulfate-matrix-in-implant-surfaces-enhance-osseointegration-a-systematic-review-and-meta-analysis
#14
REVIEW
S V Kellesarian, V R Malignaggi, T V Kellesarian, H Bashir Ahmed, F Javed
Implant surface modification has been used to improve osseointegration. However, evidence regarding improved new bone formation (NBF) and osseointegration with the use of collagen-chondroitin sulfate (CS) matrix coated implants remains unclear. The aim of this study was to assess the efficacy of collagen-CS matrix coating on the osseointegration of implants. The focused question was "Does the incorporation of collagen-CS matrix in implant surfaces influence osseointegration?" To answer the question, indexed databases were searched up to July 2017 using various combinations of the key words "collagen", "chondroitin sulfate", "osseointegration", and "implants"...
October 30, 2017: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/29093576/sequencing-of-glycosaminoglycans-with-potential-to-interrogate-sequence-specific-interactions
#15
Toin H van Kuppevelt, Arie Oosterhof, Elly M M Versteeg, Emina Podhumljak, Els M A van de Westerlo, Willeke F Daamen
Technologies to sequence nucleic acids/proteins are widely available, but straightforward methodologies to sequence complex polysaccharides are lacking. We here put forward a strategy to sequence glycosaminoglycans, long linear polysaccharides involved in many biochemical processes. The method is based on the covalent immobilization and (immuno)chemical characterization of only those size-separated saccharides that harbor the original reducing end of the full-length chain. Using this methodology, the saccharide sequence of the chondroitin sulfate chain of the proteoglycan bikunin was determined...
November 1, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29092854/differentiation-between-various-chondroitin-sulfate-formulations-in-symptomatic-knee-osteoarthritis
#16
Jean Yves Reginster
No abstract text is available yet for this article.
November 1, 2017: Annals of the Rheumatic Diseases
https://www.readbyqxmd.com/read/29090195/histological-physical-studies-after-xenograft-of-porcine-ear-cartilage
#17
Yong Ah Ryu, Meiying Jin, Nakheon Kang
BACKGROUND: Because of the relatively similar size of organs to human and the physiological and structural similarities, the use of porcine as xenograft donors is progressing very actively. In this study, we analyzed the characteristics of porcine ear cartilage and evaluated its suitability as graft material in reconstructive and cosmetic surgery. METHODS: The auricular cartilage was harvested from two pigs, and subjected to histological examination by immunohistochemical staining...
September 2017: Arch Craniofac Surg
https://www.readbyqxmd.com/read/29081732/lar-rptp-clustering-is-modulated-by-competitive-binding-between-synaptic-adhesion-partners-and-heparan-sulfate
#18
Seoung Youn Won, Cha Yeon Kim, Doyoun Kim, Jaewon Ko, Ji Won Um, Sung Bae Lee, Matthias Buck, Eunjoon Kim, Won Do Heo, Jie-Oh Lee, Ho Min Kim
The leukocyte common antigen-related receptor protein tyrosine phosphatases (LAR-RPTPs) are cellular receptors of heparan sulfate (HS) and chondroitin sulfate (CS) proteoglycans that direct axonal growth and neuronal regeneration. LAR-RPTPs are also synaptic adhesion molecules that form trans-synaptic adhesion complexes by binding to various postsynaptic adhesion ligands, such as Slit- and Trk-like family of proteins (Slitrks), IL-1 receptor accessory protein-like 1 (IL1RAPL1), interleukin-1 receptor accessory protein (IL-1RAcP) and neurotrophin receptor tyrosine kinase C (TrkC), to regulate synaptogenesis...
2017: Frontiers in Molecular Neuroscience
https://www.readbyqxmd.com/read/29081414/arylsulfatase-b-is-reduced-in-prostate-cancer-recurrences
#19
Leo Feferman, Ryan Deaton, Sumit Bhattacharyya, Hui Xie, Peter H Gann, Jonathan Melamed, Joanne K Tobacman
BACKGROUND: Arylsulfatase B (ARSB) removes the 4-sulfate group from chondroitin 4-sulfate (C4S) and dermatan sulfate and is required for their degradation. Prior work showed that ARSB immunohistochemical scores were lower in malignant prostate tissue, and were associated with higher Gleason scores and recurrence. OBJECTIVE: This study aims to confirm that ARSB immunostaining of prostate tissue obtained at the time of radical prostatectomy is prognostic for prostate cancer recurrence...
October 16, 2017: Cancer Biomarkers: Section A of Disease Markers
https://www.readbyqxmd.com/read/29080818/preparation-and-optimization-of-self-assembled-chondroitin-sulfate-nisin-nanogel-based-on-quality-by-design-concept
#20
Shahab Mohtashamian, Soheil Boddohi, Saman Hosseinkhani
Self-assembled nanogel was prepared by electrostatic complexation of two oppositely charged biological macromolecules, which were cationic nisin and anionic chondroitin sulfate (ChS). The critical factors affected the physical properties of ChS-nisin nanogel was screened and optimized by Plackett-Burman design (PB) and central composite design (CCD). The independent factors selected were: concentration ratio of nisin to ChS, injection rate of nisin solution, buffer solvent type, magnetic stirring rate, pH of initial buffer solution, centrifuge-cooling temperature, and centrifuge rotation speed...
October 25, 2017: International Journal of Biological Macromolecules
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