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Cartilage Matrix - Europe PMC

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Last Updated: 02 February 2022

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Expression of cartilage oligomeric matrix protein (COMP) associates with capsular invasion in salivary gland pleomorphic adenoma.

In an attempt to identify genes associated with capsule invasion, this study was designed to investigate RNA expression profiles in salivary gland PA. Methods We analyzed the expression profiles of 4 salivary gland PA patients by RNA-sequencing, based on RNA-sequencing. To test candidate DEGs in 59 Pennsylvania patients, RT-qPCR and correlation tests were conducted, and immunohistochemical tests were done to establish candidate DEGs. Whether you're looking for a unique way to understand PA. 40 DEGs were tested and verified by RT-qPCR, 11 upregulated and 5 downregulated DEGs were consistent with the sequencing findings, based on GO and KEGG results, extracellular matrix organization, and the PI3K-Akt signaling pathway may have pivotal roles in PA's tumorigenesis. The Cartilage oligomeric matrix protein was found to have a strong connection with the capsular invasion of PA, and the expression of COMP in patients with invasive capsular PA was significantly higher than PA.

Source link: https://europepmc.org/article/MED/35088463


Antibodies to cartilage oligomeric matrix protein are pathogenic in mice and may be clinically relevant in rheumatoid arthritis.

Cartilage oligomeric matrix protein, which is an autoantigen in rheumatoid arthritis and experimental arthritis models. By X-ray crystallography, the relationship of the monoclonal antibody 15A11 in a complex with its specific COMP epitope P6 was determined. In a large Swedish cohort of RA patients, the COMP P6 epitope and its citrullinated variants were evaluated for their clinical relevance and value. In addition, serum IgGs specific for the COMP P6 peptide and its citrullinated variants were detectable in RA patients at significantly higher rates in RA patients compared to the healthy controls and correlated with a higher disease activity score. In RA patients and their RA patients, the recognized epitope can be citrullinated, and antibodies to this epitope are elevated, correlated with elevated disease risk, implying a pathogenic role of anti-COMP antibodies in a subset of RA patients.

Source link: https://europepmc.org/article/MED/35080151


Fewer daily steps are associated with greater cartilage oligomeric matrix protein response to loading post-ACL reconstruction.

Following anterior cruciate ligament reconstruction, Aberrant joint loading contributes to posttraumatic knee osteoarthritis following anterior cruciate ligament reconstruction; however, little is known about the relationship between joint loading following daily walking and cartilage health post-ACLR. Over 7 days was monitored with an accelerometer worn on the right hip in 31 people with ACLR and 21 controls, who were quantified as mean steps/day and time spent in 100 steps/min. Following walking in people with ACLR, there were higher daily steps and less minutes spent in a 100 steps/min were attributed to higher %COMP; no statistically significant associations existed in controls; Those with ACLR who do not walk more often have greater %COMP, which may indicate increased cartilage loss or turnover in response to walking.

Source link: https://europepmc.org/article/MED/35060165


In vitro and in silico analysis of a E559K mutation on cartilage oligomeric matrix protein.

PSACH's pathomolecular mechanisms are unclear as a result of C-terminal globular region mutations. In this research, a heterozygous mutation in a Chinese family with PSACH was identified. Using all-atom molecular dynamics simulation, we investigated the origins of this mutation and how to analyze the pathogenesis of the mutation.

Source link: https://europepmc.org/article/MED/35077910


Combined Mesenchymal Stem Cells and Cartilage Acellular Matrix Injection Therapy for Osteoarthritis in Goats.

Background In osteoarthritis and cartilage regeneration, human umbilical cord blood-derived MSCs have been studied. In a rabbit model of OA, hUCB-MSCs combined with cartilage acellular matrix injection is a potential therapeutic agent for structural enhancement and anti-inflammatory effects. Medial meniscectomy in a goat model in an anterior cruciate ligament transection. Six months after administration, macroscopic and histological evaluations of the goat articular cartilage were conducted six months after intervention. Results The results indicated significant improvement in the OA + hUCB-MSCs group only at 5 months after diagnosis, only in the OA + hUCB-MSCs group, only at 5 months after therapy, although the K&L score showed significant improvement only in the OA + CAM Inj group. In a goat model, OA symptoms were minimized and the establishment of successful cartilage tissue repair.

Source link: https://europepmc.org/article/MED/35023025


A highly porous type II collagen containing scaffold for the treatment of cartilage defects enhances MSC chondrogenesis and early cartilaginous matrix deposition.

The creation of instructive and biomimetic scaffolds capable of stimulating efficient mesenchymal stem cell differentiation and robust de novo matrix formation is a significant challenge in cartilage tissue engineering. Carbon-based scaffolds are one of the most commonly used products given collagen's inherent ability to function as an instructive and bioactive biomolecule. We suggest that taking a biomimetic approach to scaffold construction may lead to an improved result for enhanced cartilage repair. Consequently, this research sought to develop innovative type II collagen scaffolding for enhanced cartilage repair by including CII and/or hyaluronic acid in a type I collagen framework. Although all scaffold variants survived early cartilaginous matrix deposition, the CII-containing scaffolds in HyA's presence did best, offering enhanced deposition and delivery of sulphated glycosaminoglycans in vitro by day 28. Although all scaffold variants met early cartilaginous matrix deposition, the CII-containing scaffolds in the presence of HyA performed best, providing enhanced deposition and delivery of sulphated glycosamino.

Source link: https://europepmc.org/article/MED/35018931


COMP (Cartilage Oligomeric Matrix Protein), a Novel PIEZO1 Regulator That Controls Blood Pressure.

BACKGROUND ENDOthelial cells are crucial for maintaining blood pressure by secretly releasing biologically active molecules, such as nitric oxide. For microvascular tension measurements, mice were isolated from mice. An electron paramagnetic resonance method was used to detect Nitric oxide. Comp -/- mice had elevated BP and impaired acetylcholine-mediated endothelium-dependent relaxation in comparison to wild-type mice with or without AngII. COMP also interacted with Piezo1's C-terminus directly, initiating endogenous Piezo1 currents, Ca 2+/calmodulin-dependent protein kinase type II and eNOS activation, and nitric oxide production. In wild-type and COMP -/- mice, the Yoda1 effect, according to the Piezo1 activator, reduced the difference between endothelium-dependent relaxation and BP. COMP is a novel Piezo1 regulator that plays a protective role in BP control by increasing cellular Ca 2+ influx, eNOS production, and nitric oxide production, according to our report. Conclusions According to our report, COMP is a novel Piezo1 regulator that plays a protective role in BP control by raising cell phone number, eNOS production, as well as nitric oxide production.

Source link: https://europepmc.org/article/MED/34983194


Modulation of the inflammatory response to decellularized collagen matrix for cartilage regeneration.

Decellularized extracellular matrices are one of the most commonly used in tissue engineering due to their cell instructive properties, biodegradability, and accessibility. A natural collagen type II matrix can be a promising way to provide the necessary cues and assistance for chondrogenic stem and progenitor cells, particularly in cartilage. Our results show that the xenogeneic collagen matrix can promote a mixed reaction in human macrophages, whereby the inflammatory reaction and the induction of remodeling macrophages are both present. In addition, we show the inhibitory effect of macrophage response on human CSPCs' migration capacity.

Source link: https://europepmc.org/article/MED/34967101


Targeted Activation of G-Protein Coupled Receptor-Mediated Ca2+ Signaling Drives Enhanced Cartilage-Like Matrix Formation.

Mechanical and/or pharmacological stimulation of endogenous Ca 2+ signaling transducers has been tried by mechanical and/or pharmacological stimulation of Ca 2+ signaling; however, such techniques may lack specificity and/or precision with Ca 2+ activation mechanisms. Ca 2+ signal transduction platforms that enable precise and selective Ca 2+ signal transduction can aid dissection of the roles that [Ca 2+ ] i signaling plays in chondrocyte behavior. Here, we explore the effects of long-term CNO stimulatory culture on hM3Dq [Ca 2+] i signaling dynamics, reproduction, and protein deposition in 2D ATDC5 cultures. This research established G q-protein coupled receptor-mediated [Ca 2+] i signaling involvement in chondroprogenitor formation and cartilage-like matrix production, and established hM3Dq as a useful tool for elucidating the role of GPCR-mediated Ca 2+ signaling in chondrogenesis and chondrocyte differentiation, establishing hM3Dq as a key player in chondroprogenitor proliferation and cartilage-mediated e enitor q -mediated receptor-mediated -mediated [Ca 2+ -mediated chondonitor proliferation and cartilage-like matrix manufacturing in chondrocyte differentiation, chondrocyte differentiation in hM3Dq ma 2+ signaling involvement in chondropoutput chondrocyte differentiation.

Source link: https://europepmc.org/article/MED/34693731


Hybrid Hydrogel Composed of Hyaluronic Acid, Gelatin, and Extracellular Cartilage Matrix for Perforated TM Repair.

Extracellular cartilage matrix ECM was assembled and investigated about the possibility of a novel series of composite hydrogels made from the three components, including hyaluronic acid methacryloyl HAMA; 2, gelatin methacryloyl GelMA; and 3. In addition, a rat TM defect model was used to determine the hydrogels' in vivo results in this particular case.

Source link: https://europepmc.org/article/MED/35004660

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions