keyword
MENU ▼
Read by QxMD icon Read
search

Collagen Matrix

keyword
https://www.readbyqxmd.com/read/28334367/modeling-of-stiffness-and-strength-of-bone-at-nanoscale
#1
Diab W Abueidda, Fereshteh A Sabet, Iwona M Jasiuk
Two distinct geometrical models of bone at nanoscale (collagen fibril and mineral platelets) are analyzed computationally. In the first model (Model I) minerals are periodically distributed in a staggered manner in a collagen matrix while in the second model (Model II) minerals form continuous layers outside the collagen fibril. Elastic modulus and strength of bone at the nanoscale, represented by these two models, are studied using a finite element software Abaqus. The analysis employs a traction-separation law (cohesive surface modeling) at various interfaces in the models to account for interfacial delaminations...
March 23, 2017: Journal of Biomechanical Engineering
https://www.readbyqxmd.com/read/28333992/improved-epidermal-barrier-formation-in-human-skin-models-by-chitosan-modulated-dermal-matrices
#2
Arnout Mieremet, Marion Rietveld, Samira Absalah, Jeroen van Smeden, Joke A Bouwstra, Abdoelwaheb El Ghalbzouri
Full thickness human skin models (FTMs) contain an epidermal and a dermal equivalent. The latter is composed of a collagen dermal matrix which harbours fibroblasts. Current epidermal barrier properties of FTMs do not fully resemble that of native human skin (NHS), which makes these human skin models less suitable for barrier related studies. To further enhance the resemblance of NHS for epidermal morphogenesis and barrier formation, we modulated the collagen dermal matrix with the biocompatible polymer chitosan...
2017: PloS One
https://www.readbyqxmd.com/read/28333279/inhibition-of-pim1-kinase-attenuates-inflammation-induced-pro-labour-mediators-in-human-fetal-membranes-in-vitro
#3
Ratana Lim, Gillian Barker, Martha Lappas
STUDY QUESTION: Does proviral integration site for Moloney murine leukemic virus (PIM)1 kinase play a role in regulating the inflammatory processes of human labour and delivery? SUMMARY ANSWER: PIM1 kinase plays a critical role in fetal membranes in regulating pro-inflammatory and pro-labour mediators. WHAT IS KNOWN ALREADY: Infection and inflammation have strong causal links to preterm delivery by stimulating pro-inflammatory cytokines and collagen degrading enzymes, which can lead to rupture of membranes...
March 9, 2017: Molecular Human Reproduction
https://www.readbyqxmd.com/read/28333188/autologous-collagen-matrix-acm-lower-pole-support-with-a-supero-anterior-capsular-flap-in-secondary-subpectoral-breast-augmentation
#4
Paolo Montemurro, Mubashir Cheema, Per Hedén, Stefano Avvedimento, Mouchammed Agko, Alessandro Quattrini Li
Background: Secondary aesthetic breast surgery is a complex and challenging scenario. It requires the surgeon to identify contributing factors, provide patient education, make a further management plan, and optimize the conditions for a favorable result. Various techniques have been described in literature but the rate of reoperation is still high. The first author has been using a supero-anterior capsular flap with a neopectoral subcapsular pocket and an implant change in these cases...
January 27, 2017: Aesthetic Surgery Journal
https://www.readbyqxmd.com/read/28332587/bioreactor-mechanically-guided-3d-mesenchymal-stem-cell-chondrogenesis-using-a-biocompatible-novel-thermo-reversible-methylcellulose-based-hydrogel
#5
A Cochis, S Grad, M J Stoddart, S Farè, L Altomare, B Azzimonti, M Alini, L Rimondini
Autologous chondrocyte implantation for cartilage repair represents a challenge because strongly limited by chondrocytes' poor expansion capacity in vitro. Mesenchymal stem cells (MSCs) can differentiate into chondrocytes, while mechanical loading has been proposed as alternative strategy to induce chondrogenesis excluding the use of exogenous factors. Moreover, MSC supporting material selection is fundamental to allow for an active interaction with cells. Here, we tested a novel thermo-reversible hydrogel composed of 8% w/v methylcellulose (MC) in a 0...
March 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28332281/collagen-type-xv-and-the-osteogenic-status
#6
Gina Lisignoli, Elisabetta Lambertini, Cristina Manferdini, Elena Gabusi, Letizia Penolazzi, Francesca Paolella, Marco Angelozzi, Veronica Casagranda, Roberta Piva
We have previously demonstrated that collagen type XV (ColXV) is a novel bone extracellular matrix (ECM) protein. It is well known that the complex mixture of multiple components present in ECM can help both to maintain stemness or to promote differentiation of stromal cells following change in qualitative characteristics or concentrations. We investigated the possible correlation between ColXV expression and mineral matrix deposition by human mesenchymal stromal cells (hMSCs) with different osteogenic potential and by osteoblasts (hOBs) that are able to grow in culture medium with or without calcium...
March 22, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28332213/hen-egg-york-phosvitin-stimulates-osteoblast-differentiation-in-the-absence-of-ascorbic-acid
#7
Qingli Liu, Chunyan Li, Fang Geng, Xi Huang, Meihu Ma
BACKGROUND: Egg yolk phosvitin, one of the most highly phosphorylated extracellular matrix proteins known in nature, has a strong calcium binding and reducing capacity. Here, we investigated the effects of phosvitin on the osteoblast differentiation and osteogenic gene expression in cultured mouse osteoblastic MC3T3-E1 cells by using alkaline phosphatase (ALP) activity analysis, alizarin red S staining and real-time PCR assay. RESULTS: ALP activity and alizarin red S staining analyses demonstrated no significant difference between differentiating MC3T3-E1 cells cultured in the presence of phosvitin and those cultured in the presence of ascorbic acid after 21 days of differentiation...
March 23, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/28332192/arresting-simulated-dentine-caries-with-adjunctive-application-of-silver-nitrate-solution-and-sodium-fluoride-varnish-an-in%C3%A2-vitro-study
#8
Irene Shuping Zhao, May Lei Mei, Quan-Li Li, Edward Chin Man Lo, Chun-Hung Chu
PURPOSE: The aim of this in vitro study was to assess the ability of silver nitrate solution, followed by sodium fluoride varnish, to arrest caries. METHODS: Dentine slices were prepared and demineralised. Each slice was cut into three specimens for three groups (SF, SDF and W). Specimens of the SF group received topical application of 25% silver nitrate solution followed by 5% sodium fluoride varnish. The SDF group received topical application of 38% silver diamine fluoride solution (positive control)...
March 22, 2017: International Dental Journal
https://www.readbyqxmd.com/read/28332021/female-hormone-17%C3%AE-estradiol-downregulated-mmp-2-expression-and-upregulated-a1pi-expression-in-human-corneal-stromal-cells
#9
Hongbo Yin, Qi Wan, Yan Tian, Bo Zhao, Yingping Deng
Collagens are essential for cornea functions. In non-ocular tissues, it has been demonstrated that sex hormones modulate the collagen remodeling. In this study, we investigated whether the primary female hormone 17β-estradiol plays a role in the expressions of matrix metalloproteinases and proteinase inhibitors in cultured human corneal stromal cells. We found that 17β-estradiol treatment significantly reduced the matrix metalloproteinase-2 mRNA in human corneal stromal cells as well as the matrix metalloproteinase-2 proteins, while the matrix metalloproteinase-9 mRNA level was not significantly altered...
March 23, 2017: Cell Biochemistry and Biophysics
https://www.readbyqxmd.com/read/28331417/%C3%AE-tocotrienol-inhibits-tgf-%C3%AE-1-induced-contractile-phenotype-expression-of-human-airway-smooth-muscle-cells
#10
Takehito Fukushima, Akira Yamasaki, Tomoya Harada, Hiroki Chikumi, Masanari Watanabe, Ryota Okazaki, Miki Takata, Yasuyuki Hasegawa, Jun Kurai, Masaaki Yanai, Akihiro Yamamoto, Yuriko Sueda, Andrew J Halayko, Eiji Shimizu
BACKGROUND: Tocotrienols, members of the vitamin E family, exist in four different isoforms (α, β, γ and δ tocotrienol) that have can be protective against brain damage, as well as having anticancer effects in vivo and in vitro. We have shown that γ-tocotrienol inhibits human airway smooth muscle cell proliferation and migration induced by platelet-derived growth factor (PDGF)-BB by suppressing RhoA activation. In this study, we tested whether γ-tocotrienol modulates transforming growth factor (TGF) -β-induced induction of human airway smooth muscle (ASM) into a contractile phenotype and concomitant synthesis of extracellular matrix proteins...
March 2017: Yonago Acta Medica
https://www.readbyqxmd.com/read/28331283/preoperative-subconjunctival-combined-injection-of-bevacizumab-and-mitomycin-c-before-the-surgical-excision-of-primary-pterygium-clinical-and-histological-results
#11
Alahmady Hamad Alsmman, Gamal Radwan, Mortada Ahmed Abozaid, Usama Ali Mohammed, Nesreen Gamal Abd Elhaleim
PURPOSE: The aim of this study was to detect the clinical and histological effects of preoperative subconjunctival injection of both bevacizumab and mitomycin C (MMC) 1 month before the surgical excision of primary pterygium using a bare sclera technique. PATIENTS AND METHODS: A total of 20 patients with primary pterygium underwent subconjunctival combined injection of 0.1 mL of MMC (0.1 mg/mL) and 0.1 mL of bevacizumab (1.25 mg/0.1 mL) 1 month before bare sclera excision of the pterygium...
2017: Clinical Ophthalmology
https://www.readbyqxmd.com/read/28330431/fabrication-and-characterization-of-biphasic-silk-fibroin-scaffolds-for-tendon-ligament-to-bone-tissue-engineering
#12
Sònia Font Tellado, Walter Bonani, Elizabeth Rosado Balmayor, Peter Föhr, Antonella Motta, Claudio Migliaresi, Martijn van Griensven
Tissue engineering is an attractive strategy for tendon/ligament-to-bone interface repair. The structure and extracellular matrix composition of the interface are complex and allow for a gradual mechanical stress transfer between tendons/ligaments and bone. Thus, scaffolds mimicking the structural features of the native interface may be able to better support functional tissue regeneration. In this study, we fabricated biphasic silk fibroin scaffolds designed to mimic the gradient in collagen molecule alignment present at the interface...
March 23, 2017: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/28328100/smart-mechanosensing-machineries-enable-migration-of-vascular-smooth-muscle-cells-in-atherosclerosis-relevant-3d-matrices
#13
REVIEW
Qingjia Chi, Jieling Shan, Xiaorong Ding, Tieying Yin, Yazhou Wang, Dongyu Jia, Guixue Wang
At the early stage of atherosclerosis, neointima is formed due to the migration of vascular smooth muscle cells (VSMCs) from the media to the intima. VSMCs are surrounded by highly adhesive 3D matrices. They take specific strategies to cross various 3D matrices in the media, including heterogeneous collagen and mechanically-strong basement membrane. Migration of VSMCs is potentially caused by biomechanical mechanism. Most in vitro studies focus on cell migration on 2D substrates in response to biochemical factors...
March 22, 2017: Cell Biology International
https://www.readbyqxmd.com/read/28327602/glucocorticoid-suppression-of-osteocyte-perilacunar-remodeling-is-associated-with-subchondral-bone-degeneration-in-osteonecrosis
#14
Tristan W Fowler, Claire Acevedo, Courtney M Mazur, Faith Hall-Glenn, Aaron J Fields, Hrishikesh A Bale, Robert O Ritchie, Jeffrey C Lotz, Thomas P Vail, Tamara Alliston
Through a process called perilacunar remodeling, bone-embedded osteocytes dynamically resorb and replace the surrounding perilacunar bone matrix to maintain mineral homeostasis. The vital canalicular networks required for osteocyte nourishment and communication, as well as the exquisitely organized bone extracellular matrix, also depend upon perilacunar remodeling. Nonetheless, many questions remain about the regulation of perilacunar remodeling and its role in skeletal disease. Here, we find that suppression of osteocyte-driven perilacunar remodeling, a fundamental cellular mechanism, plays a critical role in the glucocorticoid-induced osteonecrosis...
March 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28326348/effects-of-odanacatib-on-bone-matrix-mineralization-in-rhesus-monkeys-are-similar-to-those-of-alendronate
#15
Barbara M Misof, Paul Roschger, Charles Chen, Maureen Pickarski, Phaedra Messmer, Klaus Klaushofer, Le T Duong
Odanacatib (ODN) is a selective and reversible inhibitor of cathepsin K which is an important enzyme for the degradation of collagen I. Aim of the present work was the head-to-head comparison between the effects of ODN and alendronate (ALN) on bone mineralization density distribution (BMDD), based on quantitative backscattered electron imaging in relation to changes in histomorphometric mineralizing surface per bone surface (MS/BS) in 12-22 years old ovariectomized rhesus monkeys. Trabecular and cortical BMDD derived parameters from vertebrae and proximal tibiae were compared among vehicle (VEH, n = 8), odanacatib low dose (ODN-L, n = 8), odanacatib high dose (ODN-H, n = 8), and alendronate (ALN, n = 6) treated animals...
December 2016: Bone Reports
https://www.readbyqxmd.com/read/28326306/cd44-a-multifunctional-cell-surface-adhesion-receptor-is-a-regulator-of-progression-and-metastasis-of-cancer-cells
#16
REVIEW
Linda T Senbanjo, Meenakshi A Chellaiah
CD44 is a cell surface adhesion receptor that is highly expressed in many cancers and regulates metastasis via recruitment of CD44 to the cell surface. Its interaction with appropriate extracellular matrix ligands promotes the migration and invasion processes involved in metastases. It was originally identified as a receptor for hyaluronan or hyaluronic acid and later to several other ligands including, osteopontin (OPN), collagens, and matrix metalloproteinases. CD44 has also been identified as a marker for stem cells of several types...
2017: Frontiers in Cell and Developmental Biology
https://www.readbyqxmd.com/read/28324731/basement-membranes
#17
Ranjay Jayadev, David R Sherwood
Basement membranes (BMs) are thin, dense sheets of specialized, self-assembled extracellular matrix that surround most animal tissues (Figure 1, top). The emergence of BMs coincided with the origin of multicellularity in animals, suggesting that they were essential for the formation of tissues. Their sheet-like structure derives from two independent polymeric networks - one of laminin and one of type IV collagen (Figure 1, bottom). These independent collagen and laminin networks are thought to be linked by several additional extracellular matrix proteins, including nidogen and perlecan (Figure 1, bottom)...
March 20, 2017: Current Biology: CB
https://www.readbyqxmd.com/read/28324642/cinnamon-reduces-inflammatory-response-in-intestinal-fibroblasts-in-vitro-and-in-colitis-in-vivo-leading-to-decreased-fibrosis
#18
Yvonne Hagenlocher, Sabrina Satzinger, Mehtap Civelek, Katharina Feilhauer, Jörg Köninger, Stephan C Bischoff, Axel Lorentz
Intestinal fibrosis, a complication of inflammatory bowel disease, is currently being addressed by surgery alone, with no adequate alternative therapy available for patients. We propose that anti-inflammatory plant substances like cinnamon extract (CE) or its main compound cinnamaldeyde (CA) could aid in therapy. We recently found CE reducing inflammation in murine colitis. Here, we analysed effects of CE on fibrosis in IL-10(-/-) colitis METHODS AND RESULTS: IL-10(-/-) and wild type (wt) mice were orally treated with/without vehicle or CE...
March 21, 2017: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/28324629/electrospun-nerve-guide-scaffold-of-poly-%C3%AE%C2%B5-caprolactone-collagen-nano-bioglass-an-in-vitro-study-in-peripheral-nerve-tissue-engineering
#19
Forouzan Mohamadi, Somayeh Ebrahimi-Barough, Mohammad Reza Nourani, Mohammad Ali Derakhshan, Vahabodin Goodarzi, Mohammad Sadegh Nazockdast, Mehdi Farokhi, Roksana Tajerian, Reza Faridi Majidi, Jafar Ai
In among of various methods, nerve tissue engineering (NTE) is one of the applicable methods to reconstruct damaged nerve tissues. Electrospinning technique and biomaterials are often considered to fabricate fibrous tissue engineered conduits which have great similarity to the extracellular matrix on fiber structure. Polymer blending is one of the most effective methods for production of new materials with outstanding features. In this research, conduit structures as main part of the peripheral nerve regeneration based on polymer blend nanocomposites PCL/Collagen/NBG (poly (ε-caprolactone)/Collagen/nano bioglass) were manufactured by electrospinning technique...
March 21, 2017: Journal of Biomedical Materials Research. Part A
https://www.readbyqxmd.com/read/28324211/comparison-of-in-vitro-osteogenic-potential-of-iliac-crest-and-degenerative-facet-joint-bone-autografts-for-intervertebral-fusion-in-lumbar-spinal-stenosis
#20
Jeroen Geurts, Daniela Ramp, Stefan Schären, Cordula Netzer
PURPOSE: The promotion of spinal fusion using bone autografts is largely mediated by the osteoinductive potential of progenitors/mesenchymal stem cells (MSC) that reside in the marrow spaces of cancellous bone. Iliac crest is the common autograft donor site, but its use presents an increased risk for donor site pain, morbidity and infection. Degenerative bone samples harvested during facetectomy might provide an alternative viable source of osteoinductive autografts. In this study, we conducted an intra-individual comparison of the osteogenic potential of isolated low passage MSC from both sources...
March 21, 2017: European Spine Journal
keyword
keyword
95602
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"