keyword
MENU ▼
Read by QxMD icon Read
search

glycosaminoglycan

keyword
https://www.readbyqxmd.com/read/28528272/glycosylation-is-important-for-legumain-localization-and-processing-to-active-forms-but-not-for-cystatin-e-m-inhibitory-functions
#1
Ngoc Nguyen Lunde, Mads Haugland Haugen, Kristina Broe Bodin Larsen, Ingrid Damgaard, Solveig J Pettersen, Roya Kasem, Wioletta Rut, Marcin Drag, Marcin Poreba, Harald Thidemann Johansen, Rigmor Solberg
The asparaginyl endopeptidase legumain and its inhibitor cystatin E/M are endogenously glycosylated. However, little is known about the nature of the carbohydrate groups and whether they affect the functions of these proteins. In this study both glycosylated and unglycosylated forms of legumain and cystatin E/M were studied. HEK293 cell lines stably over-expressing legumain or cystatin E/M, and HCT116 cells were used as cell models, and mature legumain was purified from bovine kidneys. To obtain unglycosylated proteins, cells were treated with tunicamycin, an inhibitor of N-linked glycosylation, whereas PNGase F and Endo H were used to characterize the glycosylation types...
May 17, 2017: Biochimie
https://www.readbyqxmd.com/read/28526628/heparin-based-hydrogels-induce-human-renal-tubulogenesis-in-vitro
#2
Heather M Weber, Mikhail V Tsurkan, Valentina Magno, Uwe Freudenberg, Carsten Werner
Dialysis or kidney transplantation is the only therapeutic option for end stage renal disease. Accordingly, there is a large unmet clinical need for new causative therapeutic treatments. Obtaining robust models that mimic the complex nature of the human kidney is a critical step in the development of new therapeutic strategies. Here we establish a synthetic in vitro human renal tubulogenesis model based on a tunable glycosaminoglycan-hydrogel platform. In this system, renal tubulogenesis can be modulated by the adjustment of hydrogel mechanics and degradability, growth factor signaling, and the presence of insoluble adhesion cues, potentially providing new insights for regenerative therapy...
May 16, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28524001/brain-derived-neurotrophic-factor-promotes-growth-of-neurons-and-neural-stem-cells-possibly-by-triggering-the-phosphoinositide-3-kinase-akt-glycogen-synthase-kinase-3%C3%AE-%C3%AE-catenin-pathway
#3
Jin-Wei Yang, Zhang Liang, Shi-Kang Deng Deng, Wei Ma, Xian-Bin Wang, Xing-Tong Li, Tong-Tong Wang, Yun-Fei Dai, Jian-Hui Guo, Li-Yan Li
BACKGROUND: Brain-derived neurotrophic factor (BDNF) plays a crucial role in promoting survival and differentiation of neurons and neural stem cells (NSCs), but the downstream regulating mechanisms remain poorly understood. OBJECTIVE: We investigated whether BDNF exerts its effect by triggering the phosphoinositide 3-kinase (PI3K), protein kinase B, PKB (AKT), glycogen synthase kinase-3β (GSK-3β) and β-catenin signaling pathway in cultured neurons and NSCs derived from the rat embryonic spinal cord...
May 18, 2017: CNS & Neurological Disorders Drug Targets
https://www.readbyqxmd.com/read/28520463/a-preclinical-assessment-of-early-continuous-passive-motion-and-treadmill-therapeutic-exercises-for-generating-chondroprotective-effects-after-anterior-cruciate-ligament-rupture
#4
Nai-Jen Chang, Kuan-Wei Lee, Chih-Jou Chu, Ming-You Shie, Pei-Hsi Chou, Chih-Chan Lin, Peir-In Liang
BACKGROUND: Anterior cruciate ligament (ACL) injury is a well-known risk factor for the development of posttraumatic osteoarthritis (PTOA). However, whether using continuous passive motion (CPM) with or without additional treadmill exercise (TRE) in early ACL injury might provide chondroprotective effects and further decrease the risk of PTOA has yet to be determined. HYPOTHESIS: CPM may offer an enhanced chondroprotective effect, but TRE may attenuate that effect due to the mechanical stress on the joint and inflammatory cytokines in the joint...
May 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28518000/comparison-of-simulated-microgravity-and-hydrostatic-pressure-for-chondrogenesis-of-hasc
#5
Liliana F Mellor, Andrew J Steward, Rachel C Nordberg, Michael A Taylor, Elizabeth G Loboa
BACKGROUND: Cartilage tissue engineering is a growing field due to the lack of regenerative capacity of native tissue. The use of bioreactors for cartilage tissue engineering is common, but the results are controversial. Some studies suggest that microgravity bioreactors are ideal for chondrogenesis, while others show that mimicking hydrostatic pressure is crucial for cartilage formation. A parallel study comparing the effects of loading and unloading on chondrogenesis has not been performed...
April 1, 2017: Aerospace Medicine and Human Performance
https://www.readbyqxmd.com/read/28516163/engineered-heparins-as-new-anticoagulant-drugs
#6
REVIEW
Deepika Vaidyanathan, Asher Williams, Jonathan S Dordick, Mattheos A G Koffas, Robert J Linhardt
Heparin is an anionic polysaccharide that is widely used as a clinical anticoagulant. This glycosaminoglycan is prepared from animal tissues in metric ton quantities. Animal-sourced heparin is also widely used in the preparation of low molecular weight heparins that are gaining in popularity as a result of their improved pharmacological properties. The recent contamination of pharmaceutical heparin together with concerns about increasing demand for this life saving drug and the fragility of the heparin supply chain has led the scientific community to consider other potential sources for heparin...
March 2017: Bioengineering & Translational Medicine
https://www.readbyqxmd.com/read/28513656/restoring-the-biophysical-properties-of-decellularized-patches-through-recellularization
#7
Gigi Chi Ting Au-Yeung, Udi Sarig, Hadar Sarig, Hanumakumar Bogireddi, Tomer Bronshtein, Limor Baruch, Avihai Spizzichino, Jacob Bortman, Boey Yin Chiang Freddy, Marcelle Machluf, Subbu S Venkatraman
Various extracellular matrix (ECM) scaffolds, isolated through decellularization, were suggested as ideal biomimetic materials for 'Functional tissue engineering' (FTE). The decellularization process comprises a compromise between damaging and preserving the ultrastructure and composition of ECM-previously shown to affect cell survival, proliferation, migration, organization, differentiation and maturation. Inversely, the effects of cells on the ECM constructs' biophysical properties, under physiological-like conditions, remain still largely unknown...
May 17, 2017: Biomaterials Science
https://www.readbyqxmd.com/read/28511649/il-10-ameliorates-tnf-%C3%AE-induced-meniscus-degeneration-in-mature-meniscal-tissue-in-vitro
#8
P Behrendt, K Häfelein, A Preusse-Prange, A Bayer, A Seekamp, B Kurz
BACKGROUND: Joint inflammation causes meniscus degeneration and can exacerbate post-traumatic meniscus injuries by extracellular matrix degradation, cellular de-differentiation and cell death. The aim of this study was to examine whether anti-inflammatory interleukin-10 exerts protective effects in an in vitro model of TNF-α-induced meniscus degeneration. METHODS: Meniscus tissue was harvested from the knees of adult cows. After 24 h of equilibrium explants were simultaneously treated with bovine TNF-α and IL-10...
May 16, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28506842/diagnostic-and-prognostic-value-of-delayed-gadolinium-enhanced-magnetic-resonance-imaging-of-cartilage-dgemric-in-early-osteoarthritis-of-the-hip
#9
Antony Palmer, Scott Fernquest, Ines Rombach, Daniel Park, Tom Pollard, John Broomfield, Neal Bangerter, Andrew Carr, Sion Glyn-Jones
BACKGROUND: Delayed Gadolinium Enhanced MRI of Cartilage (dGEMRIC) can detect glycosaminoglycan loss in the acetabular cartilage of asymptomatic individuals with cam morphology. The aims of this study were to explore the relationship between cam morphology and dGEMRIC values, and to explore whether baseline dGEMRIC can predict the development of radiographic hip osteoarthritis. METHODS: Prospective cohort (SibKids) study with clinical, radiographic, and MRI assessment at baseline and five-year follow-up (n=34)...
May 12, 2017: Osteoarthritis and Cartilage
https://www.readbyqxmd.com/read/28499501/potential-involvement-of-chondroitin-sulfate-a-in-the-pathogenesis-of-ameloblastoma
#10
Xiangjun Li, Hiroshi Kurita, Tiepeng Xiao, Kyou Iijima, Kenji Kurashina, Jun Nakayama
Ameloblastoma is classified as a benign odontogenic tumor characterized by locally invasive behavior and high risk of recurrence. Here, we evaluate a potential role for glycosaminoglycan, a structural component of cell membranes and extracellular matrix, in ameloblstoma pathogenesis. We subjected formalin-fixed, paraffin-embedded tissue sections of 34 cases of ameloblastoma, 10 of odontogenic keratocyst, and 17 of dentigerous cyst to immunohistochemistry using monoclonal antibodies recognizing chondroitin sulfate A (CS-A), heparan sulfate (HS), and keratan sulfate (KS)...
May 9, 2017: Acta Histochemica
https://www.readbyqxmd.com/read/28494267/advanced-glycation-products-levels-and-mechanical-properties-of-vaginal-tissue-in-pregnancy
#11
Homayemem K Weli, Riaz Akhtar, Zhuo Chang, Wen-Wu Li, Jason Cooper, Ying Yang
OBJECTIVES: Non-enzymatic glycation is closely associated with altered mechanical properties of connective tissue. Pregnancy, marked with high levels of female hormones, confers unique alteration to the mechanical properties of pelvic connective tissues in order to meet their physiological demands. However, there are few studies on glycation content and its influence on the mechanical properties of pelvic connective tissues during pregnancy. We hypothesise that the glycation content in pelvic tissues will change with a corresponding alteration in their mechanical properties, and that these changes are influenced by hormone levels...
April 23, 2017: European Journal of Obstetrics, Gynecology, and Reproductive Biology
https://www.readbyqxmd.com/read/28492928/local-changes-to-the-distal-femoral-growth-plate-following-injury-in-mice
#12
Lauren M Mangano Drenkard, Meghan E Kupratis, Katie Li, Louis C Gerstenfeld, Elise F Morgan
Injury to the growth plate is associated with growth disturbances, most notably premature cessation of growth. The goal of this study was to identify spatial changes in the structure and composition of the growth plate in response to injury to provide a foundation for developing therapies that minimize the consequences for skeletal development. We used contrast-enhanced micro-computed tomography (CECT) and histological analyses of a murine model of growth plate injury to quantify changes in the cartilaginous and osseous tissue of the growth plate...
May 8, 2017: Journal of Biomechanical Engineering
https://www.readbyqxmd.com/read/28492485/sulfated-alginates-as-heparin-analogues-a-review-of-chemical-and-functional-properties
#13
REVIEW
Øystein Arlov, Gudmund Skjåk-Bræk
Heparin is widely recognized for its potent anticoagulating effects, but has an additional wide range of biological properties due to its high negative charge and heterogeneous molecular structure. This heterogeneity has been one of the factors in motivating the exploration of functional analogues with a more predictable modification pattern and monosaccharide sequence, that can aid in elucidating structure-function relationships and further be structurally customized to fine-tune physical and biological properties toward novel therapeutic applications and biomaterials...
May 11, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28492349/a-novel-compressive-stress-based-osteoarthritis-like-chondrocyte-system
#14
In-Chi Young, Sung-Ting Chuang, Amit Gefen, Wei-Ting Kuo, Chun-Ting Yang, Chia-Hsien Hsu, Feng-Huei Lin
Mechanical stress damage and insufficient self-repair can contribute to osteoarthritis (OA) in the affected joint. As the effects of stress on chondrocyte metabolism can regulate cartilage homeostasis, the specific stress-response condition is therefore a key to the generation of an OA disease model. We aimed to produce a specific stress- and cell-based OA model after evaluating the metabolic responses of chondrocytes in response to a series of static and cyclic compression stressors. A static load exceeding 40 psi initiated extracellular matrix (ECM) degradation through a decrease in the sulphated-glycosaminoglycan (GAG) content, upregulation of catabolic matrix metalloproteinase (MMP)-13 encoding gene expression, and downregulation of the ECM-related aggrecan and type II collagen encoding genes within 24 h...
May 2017: Experimental Biology and Medicine
https://www.readbyqxmd.com/read/28490052/effects-of-endogenous-cysteine-proteinases-on-structures-of-collagen-fibres-from-dermis-of-sea-cucumber-stichopus-japonicus
#15
Yu-Xin Liu, Da-Yong Zhou, Dong-Dong Ma, Zi-Qiang Liu, Yan-Fei Liu, Liang Song, Xiu-Ping Dong, Dong-Mei Li, Bei-Wei Zhu, Kunihiko Konno, Fereidoon Shahidi
Autolysis of sea cucumber, caused by endogenous enzymes, leads to postharvest quality deterioration of sea cucumber. However, the effects of endogenous proteinases on structures of collagen fibres, the major biologically relevant substrates in the body wall of sea cucumber, are less clear. Collagen fibres were prepared from the dermis of sea cucumber (Stichopus japonicus), and the structural consequences of degradation of the collagen fibres caused by endogenous cysteine proteinases (ECP) from Stichopus japonicus were examined...
October 1, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28489793/a-selective-screening-program-for-the-early-detection-of-mucopolysaccharidosis-results-of-the-find-project-a-2-year-follow-up-study
#16
Cristóbal Colón, J Victor Alvarez, Cristina Castaño, Luís G Gutierrez-Solana, Ana M Marquez, María O'Callaghan, Félix Sánchez-Valverde, Carmen Yeste, María-Luz Couce
The mucopolysaccharidoses (MPSs) are underdiagnosed but they are evaluated in few newborn screening programs, probably due to the many challenges remaining, such as the identification of late-onset phenotypes. Systematic screening at the onset of clinical symptoms could help to early identify patients who may benefit from specific treatments. The aim of this prospective study was to assess a novel selective screening program, the FIND project, targeting patients aged 0 to 16 years with clinical manifestations of MPS...
May 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28488318/platelet-rich-plasma-enhances-the-integration-of-bio-engineered-cartilage-with-native-tissue-in-an-in-vitro-model
#17
Corey Sermer, Rita Kandel, Jesse Anderson, Mark Hurtig, John Theodoropoulos
Current therapies for cartilage repair can be limited by an inability of the repair tissue to integrate with host tissue. Thus there is interest in developing approaches to enhance integration. We have previously shown that platelet-rich plasma (PRP) improves cartilage tissue formation. This raised the question as to whether PRP could promote cartilage integration. Chondrocytes were isolated from cartilage harvested from bovine joints, seeded on a porous bone substitute, and grown in vitro to form an osteochondral-like implant...
May 9, 2017: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/28487826/oxidative-profile-exhibited-by-mucopolysaccharidosis-type-iva-patients-at-diagnosis-increased-keratan-urinary-levels
#18
Bruna Donida, Desirèe P Marchetti, Carlos Eduardo Diaz Jacques, Graziela Ribas, Marion Deon, Paula Manini, Helen Tais da Rosa, Dinara Jaqueline Moura, Jenifer Saffi, Roberto Giugliani, Carmen Regla Vargas
Morquio A disease (Mucopolysaccharidosis type IVA, MPS IVA) is one of the 11 mucopolysaccharidoses (MPSs), a heterogeneous group of inherited lysosomal storage disorders (LSDs) caused by deficiency in enzymes need to degrade glycosaminoglycans (GAGs). Morquio A is characterized by a decrease in N-acetylgalactosamine-6-sulfatase activity and subsequent accumulation of keratan sulfate and chondroitin 6-sulfate in cells and body fluids. As the pathophysiology of this LSD is not completely understood and considering the previous results of our group concerning oxidative stress in Morquio A patients receiving enzyme replacement therapy (ERT), the aim of this study was to investigate oxidative stress parameters in Morquio A patients at diagnosis...
June 2017: Molecular Genetics and Metabolism Reports
https://www.readbyqxmd.com/read/28486420/a-fluorescent-probe-for-glycosaminoglycans-applied-to-the-detection-of-dermatan-sulfate-by-a-mix-and-read-assay
#19
Melissa Rappold, Ulrich Warttinger, Roland Krämer
Glycosaminoglycans are complex biomolecules of great biological and medical importance. The quantification of glycosaminoglycans, in particular in complex matrices, is challenging due to their inherent structural heterogeneity. Heparin Red, a polycationic, fluorescent perylene diimide derivative, has recently emerged as a commercial probe for the convenient detection of heparins by a mix-and-read fluorescence assay. The probe also detects glycosaminoglycans with a lower negative charge density than heparin, although with lower sensitivity...
May 9, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28485509/the-biologic-response-of-human-anterior-cruciate-ligamentocytes-on-collagen-patches-to-platelet-rich-plasma-formulations-with-and-without-leucocytes
#20
Anna M Krismer, Romina S Cabra, Rahel D May, Daniela A Frauchiger, Sandro Kohl, Sufian S Ahmad, Benjamin Gantenbein
Due to the poor self-healing capacities of the anterior cruciate ligament, previous primary repair attempts have failed. To enhance biologic healing, platelet rich plasma and collagen scaffold have shown promise in animal models. Platelet rich plasma (PRP) is already used in several clinical applications although outcomes are quite debated. The purpose of this study was to examine the effects of different PRP formulations during 21 days: with leucocytes and pure PRP on human anterior cruciate ligament-derived ligamentocytes grown on collagen patches in 3D cell cultures in vitro...
May 9, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
keyword
keyword
75139
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"