keyword
MENU ▼
Read by QxMD icon Read
search

Lubricin

keyword
https://www.readbyqxmd.com/read/28215089/structure-and-property-changes-in-self-assembled-lubricin-layers-induced-by-calcium-ion-interactions
#1
George W Greene, Rajiv Thapa, Stephen Andrew Holt, Xiaoen Wang, Christopher J Garvey, Rico F Tabor
Lubricin is a "mucin-like" glycoprotein found in synovial fluids and coating the cartilage surfaces of articular joints which is now generally accepted as one of the body's primary boundary lubricants and anti-adhesive agents. Lubricin's superior lubrication and anti-adhesion are believed to derive from its unique interfacial properties by which lubricin molecules adhere to surfaces (and biomolecules, including hyaluronic acid and collagen) through discrete interactions localized to its two terminal end-domains...
February 18, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28208081/molecular-synergy-in-biolubrication-the-role-of-cartilage-oligomeric-matrix-protein-comp-in-surface-structuring-of-lubricin
#2
Akanksha Raj, Min Wang, Chao Liu, Liaquat Ali, Niclas G Karlsson, Per M Claesson, Andra Dėdinaitė
HYPOTHESIS: Synovial surfaces are lubricated by biomolecular aggregates that act in synergy, and lubricin is one key biolubricant. Its molecular structure allows extensive hydration and this is conducive to its lubrication performance. However, in order to fullfil its lubrication function it needs to be anchored and oriented on the surface in a proper way. We suggest that cartilage oligomeric matrix protein (COMP) is one of the biomolecules that promotes anchoring of lubricin in a fashion that facilitates lubrication...
February 8, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28169453/mechanical-properties-and-structure-function-relationships-of-human-chondrocyte-seeded-cartilage-constructs-after-in-vitro-culture
#3
Jill M Middendorf, Darvin J Griffin, Sonya Shortkroff, Caroline Dugopolski, Stephen Kennedy, Joseph Siemiatkoski, Itai Cohen, Lawrence J Bonassar
Autologous Chondrocyte Implantation (ACI) is a widely recognized method for the repair of focal cartilage defects. Despite the accepted use, problems with this technique still exist, including graft hypertrophy, damage to surrounding tissue by sutures, uneven cell distribution, and delamination. Modified ACI techniques overcome these challenges by seeding autologous chondrocytes onto a 3D scaffold and securing the graft into the defect. Many studies on these tissue engineered grafts have identified the compressive properties, but few have examined frictional and shear properties as suggested by FDA guidance...
February 7, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28129516/intra-articular-recombinant-human-proteoglycan-4-mitigates-cartilage-damage-after-destabilization-of-the-medial-meniscus-in-the-yucatan-minipig
#4
Kimberly A Waller, Kaitlyn E Chin, Gregory D Jay, Ling X Zhang, Erin Teeple, Scott McAllister, Gary J Badger, Tannin A Schmidt, Braden C Fleming
BACKGROUND: Lubricin, or proteoglycan 4 (PRG4), is a glycoprotein responsible for joint boundary lubrication. PRG4 has been shown previously to be down-regulated after traumatic joint injury such as a meniscal tear. Preliminary evidence suggests that intra-articular injection of PRG4 after injury will reduce cartilage damage in rat models of surgically induced posttraumatic osteoarthritis. OBJECTIVE: To determine the efficacy of intra-articular injection of full-length recombinant human lubricin (rhPRG4) for reducing cartilage damage after medial meniscal destabilization (DMM) in a preclinical large animal model...
January 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28100421/osteoarthritis-year-in-review-2016-biology
#5
REVIEW
E N Blaney Davidson, A P M van Caam, P M van der Kraan
This review highlights a selection of literature in the area of osteoarthritis biology published between the 2015 and 2016 Osteoarthritis Research Society International (OARSI) World Congress. Highlights were selected from a pubmed search covering cartilage, bone, inflammation and pain. A personal selection was made based, amongst other things, on topics presented during the 2015 conference. This covers circadian rhythm, TGF-β signaling, autophagy, SIRT6, exercise, lubricin, TLR's, pain and NGF. Furthermore, in this review we have made an effort to connect these seemingly distant topics into one scheme of connections between them, revealing a theoretical big picture underneath...
December 17, 2016: Osteoarthritis and Cartilage
https://www.readbyqxmd.com/read/28069163/sub-critical-impact-inhibits-the-lubricating-mechanisms-of-articular-cartilage
#6
Edward D Bonnevie, Michelle L Delco, Devis Galesso, Cynthia Secchieri, Lisa A Fortier, Lawrence J Bonassar
Although post-traumatic osteoarthritis accounts for a significant proportion of all osteoarthritis, the understanding of both biological and mechanical phenomena that lead to cartilage degeneration in the years to decades after trauma is still lacking. In this study, we evaluate how cartilage lubrication is altered after a sub-critical impact (i.e., an impact to the cartilage surface that produces surface cracking but not full thickness fissuring). Through utilizing a Stribeck-like framework, the elastoviscous transition, we evaluated changes to both the innate boundary lubricating ability of cartilage after impact and also the effectiveness of high viscosity lubricants to lower friction after impact...
December 29, 2016: Journal of Biomechanics
https://www.readbyqxmd.com/read/27993210/recombinant-human-lubricin-for-prevention-of-postoperative-intra-abdominal-adhesions-in-a-rat-model
#7
Jaewook Oh, Kean G Kuan, Leong U Tiong, Markus I Trochsler, Gregory Jay, Tannin A Schmidt, Harry Barnett, Guy J Maddern
BACKGROUND: Postoperative intra-abdominal adhesions are a major cause of morbidity and mortality and contribute to a heavy burden on health care resources. At present, numerous introduced adhesion prevention products have demonstrated some benefit but none are consistently effective. The aim of this study was to examine the effectiveness of recombinant human lubricin in preventing intra-abdominal adhesion formation. MATERIALS AND METHODS: A total of 62 male Wistar Albino rats were randomly assigned to the study...
February 2017: Journal of Surgical Research
https://www.readbyqxmd.com/read/27853940/novel-role-of-ccn3-that-maintains-the-differentiated-phenotype-of-articular-cartilage
#8
Danilo Janune, Tarek Abd El Kader, Eriko Aoyama, Takashi Nishida, Yasuhiko Tabata, Satoshi Kubota, Masaharu Takigawa
Knowledge of the microenvironment of articular cartilage in health and disease is the key to accomplishing fundamental disease-modifying treatments for osteoarthritis. The proteins comprising the CCN Family are matricellular proteins with a remarkable relevance within the context of cartilage metabolism. CCN2 displays a great capability for regenerating articular cartilage, and CCN3 has been shown to activate the expression of genes related to articular chondrocytes and to repress genes related to endochondral ossification in epiphyseal chondrocytes...
November 16, 2016: Journal of Bone and Mineral Metabolism
https://www.readbyqxmd.com/read/27824284/formation-of-hyaline-cartilage-tissue-by-passaged-human-osteoarthritic-chondrocytes
#9
Vanessa J Bianchi, Joanna F Weber, Stephen D Waldman, David Backstein, Rita A Kandel
OBJECTIVE: When serially passaged in standard monolayer culture to expand cell number, articular chondrocytes lose their phenotype. This results in the formation of fibrocartilage when they are used clinically, thus limiting their use for cartilage repair therapies. Identifying a way to redifferentiate these cells in vitro is critical if they are to be used successfully. Transforming growth factor beta (TGFβ) family members are known to be crucial for regulating differentiation of fetal limb mesenchymal cells and mesenchymal stromal cells to chondrocytes...
February 2017: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/27696338/influence-of-igf1-tgf%C3%AE-1-bfgf-and-g-csf-m-csf-on-the-mrna-levels-of-selected-matrix-proteins-cytokines-metalloproteinase-3-and-timp1-in-rat-synovial-membrane-cells
#10
Anna Osiecka-Iwan, Stanislaw Moskalewski, Anna Hyc
INTRODUCTION: We have previously observed that rat synovial membranes incubated in medium containing cartilage interstitial fluid (CIF) responded by changes in the expression of hyaluronan synthases (HAS1 and HAS2), collagen type I, versican, aggrecan, lubricin, matrix metalloproteinases 2 and 3 (MMP2 and MMP3), tissue inhibitors of metalloproteinases (TIMP1, 2 and 3), transforming growth factor β1 (TGFβ1), tumor necrosis factor (TNF), interleukin (IL) 1β and IL-6. The aim of the study was to evaluate the influence of particular cytokines found in CIF on the gene expression of extracellular matrix (ECM) proteins in synovial membrane cells...
2016: Folia Histochemica et Cytobiologica
https://www.readbyqxmd.com/read/27694778/lubricin-in-synovial-fluid-of-mild-and-severe-temporomandibular-joint-internal-derangements
#11
R Leonardi, R-E Perrotta, L-E Almeida, C Loreto, G Musumeci
BACKGROUND: To understand the molecular basis of temporomandibular joint (TMJ) pathologies, we aimed to investigate the lubricin levels in the TMJ synovial fluid (SF) of patients with mild to severe internal derangements (IDs). MATERIAL AND METHODS: A total, 34 joints were the study group. Only patients, with a Wilkes stage of III, IV and V were included, in this sample. Control group consisted of SF from eight joints, from patients undergoing to orthognatic surgery...
November 1, 2016: Medicina Oral, Patología Oral y Cirugía Bucal
https://www.readbyqxmd.com/read/27688846/modulation-of-superficial-zone-protein-lubricin-prg4-by-kartogenin-and-transforming-growth-factor-%C3%AE-1-in-surface-zone-chondrocytes-in-bovine-articular-cartilage
#12
Kazumasa Miyatake, Kenjiro Iwasa, Sean M McNary, Gordon Peng, A Hari Reddi
OBJECTIVE: Superficial zone protein (SZP)/lubricin/PRG4 functions as a boundary lubricant in articular cartilage to decrease friction and wear. As articular cartilage lubrication is critical for normal joint function, the accumulation of SZP at the surface of cartilage is important for joint homeostasis. Recently, a heterocyclic compound called kartogenin (KGN) was found to induce chondrogenic differentiation and enhance mRNA expression of lubricin. The objective of this study was to determine whether KGN can stimulate synthesis of SZP in superficial zone, articular chondrocytes...
October 2016: Cartilage
https://www.readbyqxmd.com/read/27680668/sialidase-unmasks-mucin-domain-epitopes-of-lubricin
#13
Kathryn A Solka, Ira J Miller, Thomas M Schmid
Lubricin is a secreted, mucin-like glycoprotein and proteoglycan abundant in synovial fluid that provides boundary lubrication and prevents cell adhesion in synovial joints. The antilubricin S6.79 monoclonal antibody recognizes an O-linked glycopeptide epitope in lubricin's mucin domain. The central, long mucin domain of lubricin is extensively O-glycosylated with Gal(β1-3)GalNAc-O-Ser/Thr, and about two thirds of the O-glycosylated sites are capped with sialic acid. Our aim was to determine whether removal of sialic acid by sialidase could improve the detection of lubricin in a number of human tissues using the S6...
November 2016: Journal of Histochemistry and Cytochemistry: Official Journal of the Histochemistry Society
https://www.readbyqxmd.com/read/27658527/pxl01-in-sodium-hyaluronate-results-in-increased-prg4-expression-a-potential-mechanism-for-anti-adhesion
#14
Sara Edsfeldt, Björn Holm, Margit Mahlapuu, Carol Reno, David A Hart, Monica Wiig
PURPOSE: To investigate the anti-adhesive mechanisms of PXL01 in sodium hyaluronate (HA) by using the rabbit lactoferrin peptide, rabPXL01 in HA, in a rabbit model of healing tendons and tendon sheaths. The mechanism of action for PXL01 in HA is interesting since a recent clinical study of the human lactoferrin peptide PXL01 in HA administered around repaired tendons in the hand showed improved digit mobility. MATERIALS AND METHODS: On days 1, 3, and 6 after tendon injury and surgical repair, reverse transcriptase-quantitative polymerase chain reaction (RT-qPCR) was used to assess mRNA expression levels for genes encoding the mucinous glycoprotein PRG4 (also called lubricin) and a subset of matrix proteins, cytokines, and growth factors involved in flexor tendon repair...
September 23, 2016: Upsala Journal of Medical Sciences
https://www.readbyqxmd.com/read/27614318/a-two-week-randomized-double-masked-study-to-evaluate-safety-and-efficacy-of-lubricin-150%C3%A2-%C3%AE-g-ml-eye-drops-versus-sodium-hyaluronate-ha-0-18-eye-drops-vismed%C3%A2-in-patients-with-moderate-dry-eye-disease
#15
Alessandro Lambiase, Benjamin D Sullivan, Tannin A Schmidt, David A Sullivan, Gregory D Jay, Edward R Truitt, Alice Bruscolini, Marta Sacchetti, Flavio Mantelli
PURPOSE: The objective of this clinical trial (NCT02507934) was to assess the efficacy and safety of recombinant human lubricin as compared to a 0.18% sodium hyaluronate (HA) eye drop in subjects with moderate dry eye disease (DED). METHODS: DEWS Grade 2-3 subjects were randomized to use lubricin (N=19, 51.9 ± 11.8 years) or HA (N=20, 61.8 ± 13.3 years). After a saline washout period, subjects administered BID therapy for 7 days, followed by instillation as needed (2-6 drops per eye) for 7 days...
January 2017: Ocular Surface
https://www.readbyqxmd.com/read/27511596/arthroscopic-irrigation-of-the-bovine-stifle-joint-increases-cartilage-surface-friction-and-decreases-superficial-zone-lubricin
#16
Erin Teeple, Naga Padmini Karamchedu, Katherine M Larson, Ling Zhang, Gary J Badger, Braden C Fleming, Gregory D Jay
The purpose of this study was to determine the effects of arthroscopic irrigation on cartilage superficial zone lubricin and surface friction. Arthroscopic partial meniscectomy is one of the most commonly performed orthopedic surgeries in the United States, but rates of osteoarthritis progression following this procedure are high. The effect of arthroscopic irrigation on articular surface lubrication has not been previously considered as a contributing factor in outcomes after arthroscopy. Fourteen bovine stifle joints were randomized to receive arthroscopic irrigation (n=7) or no treatment (n=7)...
September 6, 2016: Journal of Biomechanics
https://www.readbyqxmd.com/read/27498214/lubricin-proteoglycan-4-increases-in-both-experimental-and-naturally-occurring-equine-osteoarthritis
#17
H L Reesink, A E Watts, H O Mohammed, G D Jay, A J Nixon
OBJECTIVE: The goals of this study were (1) to quantify proteoglycan 4 (PRG4) gene expression; (2) to assess lubricin immunostaining; and (3) to measure synovial fluid lubricin concentrations in clinical and experimental models of equine carpal osteoarthritis (OA). DESIGN: Lubricin synovial fluid concentrations and cartilage and synovial membrane PRG4 expression were analyzed in research horses undergoing experimental OA induction (n = 8) and in equine clinical patients with carpal OA (n = 58)...
January 2017: Osteoarthritis and Cartilage
https://www.readbyqxmd.com/read/27472842/rheological-effects-of-macromolecular-interactions-in-synovial-fluid
#18
L Martin-Alarcon, T A Schmidt
The rheological properties of synovial fluid (SF) are largely attributed to the presence of high molecular weight hyaluronan (HA). However, rheological differences between SF and pure HA solutions suggest that SF proteins actively contribute towards the bulk viscoelasticity of this biological fluid. Due to various experimental challenges involved with the rheometry of low-viscosity biological fluids, the macromolecular interactions in SF and their relative rheological importance are still a matter of active discussion...
July 29, 2016: Biorheology
https://www.readbyqxmd.com/read/27435056/association-of-lubricin-concentration-in-synovial-fluid-and-clinical-status-of-osteoarthritic-knee
#19
Hiroyasu Ogawa, Kazu Matsumoto, Nobuo Terabayashi, Kenji Kawashima, Kentaro Takeuchi, Haruhiko Akiyama
OBJECTIVES: Although lubricin plays a role in controlling inflammation and pain as well as being a mechanical lubricant, clinical relevance of lubricin concentration in synovial fluid (SF) is unknown. The purpose was to determine whether lubricin concentration in SF is associated with the clinical status of the knee. METHODS: SF was obtained from 61 knee joints from patients who underwent any knee surgery with several stages of knee osteoarthritis. Lubricin/PRG4 concentration in SF was measured by enzyme-linked immunosorbent assay (ELISA)...
July 20, 2016: Modern Rheumatology
https://www.readbyqxmd.com/read/27434666/ancient-origin-of-lubricated-joints-in-bony-vertebrates
#20
Amjad Askary, Joanna Smeeton, Sandeep Paul, Simone Schindler, Ingo Braasch, Nicholas A Ellis, John Postlethwait, Craig T Miller, J Gage Crump
Synovial joints are the lubricated connections between the bones of our body that are commonly affected in arthritis. It is assumed that synovial joints first evolved as vertebrates came to land, with ray-finned fishes lacking lubricated joints. Here, we examine the expression and function of a critical lubricating protein of mammalian synovial joints, Prg4/Lubricin, in diverse ray-finned fishes. We find that Prg4 homologs are specifically enriched at the jaw and pectoral fin joints of zebrafish, stickleback, and gar, with genetic deletion of the zebrafish prg4b gene resulting in the same age-related degeneration of joints as seen in lubricin-deficient mice and humans...
July 19, 2016: ELife
keyword
keyword
22682
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"