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Adhesion

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https://www.readbyqxmd.com/read/28549109/il-18-cleavage-triggers-cardiac-inflammation-and-fibrosis-upon-%C3%AE-adrenergic-insult
#1
Han Xiao, Hao Li, Jing-Jing Wang, Jian-Shu Zhang, Jing Shen, Xiang-Bo An, Cong-Cong Zhang, Ji-Min Wu, Yao Song, Xin-Yu Wang, Hai-Yi Yu, Xiang-Ning Deng, Zi-Jian Li, Ming Xu, Zhi-Zhen Lu, Jie Du, Wei Gao, Ai-Hua Zhang, Yue Feng, You-Yi Zhang
Aims: Rapid over-activation of β-adrenergic receptor (β-AR) upon stress leads to cardiac inflammation, a prevailing factor that underlies heart injury. However, mechanisms by which acute β-AR stimulation induce cardiac inflammation still remain unknown. Here, we set out to identify the crucial role of inflammasome/interleukin (IL)-18 in initiating and maintaining cardiac inflammatory cascades upon β-AR insult. Methods and results: Male C57BL/6 mice were injected with a single dose of β-AR agonist, isoproterenol (ISO, 5 mg/kg body weight) or saline subcutaneously...
May 26, 2017: European Heart Journal
https://www.readbyqxmd.com/read/28548895/non-canonical-functions-of-claudin-proteins-beyond-the-regulation-of-cell-cell-adhesions
#2
Susan J Hagen
Tight junctions form a barrier to the diffusion of apical and basolateral membrane proteins thus regulating membrane polarity. They also regulate the paracellular movement of ions and water across epithelial and endothelial cells so that functionally they constitute an important permselective barrier. Permselectivity at tight junctions is regulated by claudins, which confer anion or cation permeability, and tightness or leakiness, by forming several highly regulated pores within the apical tight junction complex...
May 19, 2017: Tissue Barriers
https://www.readbyqxmd.com/read/28548820/preparation-of-microcapsules-containing-benzoyl-peroxide-initiator-with-gelatin-gum-arabic-polyurea-formaldehyde-shell-and-evaluating-their-storage-stability
#3
Maryam Raeesi, S Mojtaba Mirabedini, Ramin R Farnood
This work involves the optimized preparation and characterization of microcapsules which contain benzoyl peroxide (BPO) dispersed in dibutyl phthalate (DBP) with gelatin-gum arabic (Gel-GA)/Polyurea-formaldehyde (PUF) shell. The microcapsules were prepared in two steps using complex coacervation and in situ polymerization techniques, respectively, at various mixing speeds and different core:shell ratios. The scanning electron microscopy (SEM), optical microscopy, and Fourier transform infrared (FTIR) spectroscopy were used for characterization of prepared microcapsules...
May 26, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28548667/light-responsive-azo-containing-organogels
#4
M A Ayer, S Schrettl, S Balog, Y C Simon, C Weder
While azo compounds are widely employed as radical initiators, they have rarely been used as stimuli-responsive motifs in macromolecular constructs. In this study, an azo-based cross-linker was prepared and reacted with poly(vinyl alcohol) to afford a series of stimuli-responsive organogels. Irradiation of these materials with UV light causes de-cross-linking and triggers a solid-to-liquid phase transition. Model adhesives with de-bonding-on-demand capability based on this design were explored.
May 26, 2017: Soft Matter
https://www.readbyqxmd.com/read/28548553/human-amniotic-membrane-is-not-suitable-for-the-grafting-of-colon-lesions-and-prevention-of-adhesions-in-a-xenograft-rat-model
#5
Dimitri Barski, Holger Gerullis, Thorsten Ecke, Gabriella Varga, Mihaly Boros, Isabel Pintelon, Jean-Pierre Timmermans, Thomas Otto
INTRODUCTION: New biological materials are needed for specific applications in reconstructive bowel surgery and for the prevention of adhesion formation. Amniotic membranes (AMs) are assumed to have a number of unique characteristics that enhance the ingrowth of the surrounding tissue. The aim of the present study was to provide proof of these qualities in a xenograft model. MATERIALS AND METHODS: A multilayer human AM (HAM) was applied to repair defined colon wall defects in Sprague-Dawley rats (n = 18)...
May 1, 2017: Surgical Innovation
https://www.readbyqxmd.com/read/28548481/isolation-of-phenotypically-distinct-cancer-cells-using-nanoparticle-mediated-sorting
#6
Brenda Green, Leyla Kermanshah, Mahmoud Labib, Sharif Ahmed, Pamuditha Silva, Laili Mahmoudian, I-Hsin Chang, Reza M Mohamadi, Jonathan V Rocheleau, Shana O Kelley
Isolating subpopulations of heterogeneous cancer cells is an important capability for the meaningful characterization of circulating tumor cells at different stages of tumor progression and during epithelial to mesenchymal transition (EMT). Here, we describe a two-dimensional separation approach that yields phenotypically-distinct subpopulations of cancer cells. Magnetic nanoparticles coated with antibodies against the epithelial cell adhesion molecule (EpCAM) are used to enrich cancer cells in a microfluidic platform...
May 26, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28548369/invadosomes-are-coming-new-insights-into-function-and-disease-relevance
#7
REVIEW
Elyse K Paterson, Sara A Courtneidge
Invadopodia and podosomes are discrete, actin-based molecular protrusions that form in cancer cells and normal cells respectively in response to diverse signaling pathways and extracellular matrix cues. Although they participate in a host of different cellular processes, they share a common functional theme of controlling pericellular proteolytic activity, which sets them apart from other structures that function in migration and adhesion, including focal adhesions, lamellipodia, and filopodia. In this review, we highlight research that explores the function of these complex structures, including roles for podosomes in embryonic and postnatal development, in angiogenesis and remodeling of the vasculature, in maturation of the post-synaptic membrane, in antigen sampling and recognition, and in cell-cell fusion mechanisms, as well as the involvement of invadopodia at multiple steps of the metastatic cascade, and how all of this may apply in the treatment of human disease states...
May 26, 2017: FEBS Journal
https://www.readbyqxmd.com/read/28547932/from-intraperitoneal-onlay-mesh-repair-to-preperitoneal-onlay-mesh-repair
#8
REVIEW
George Pei Cheung Yang
Laparoscopic repair for ventral and incisional hernias was first reported in the early 1990s. It uses intraperitoneal only mesh placement to achieve a tension-free repair of the hernia. However, in recent years, there has been greater concern about long-term complication involving intraperitoneal mesh placement. Many case reports and case series have found evidence of mesh adhesion, mesh fistulation, and mesh migration into hollow organs including the esophagus, small bowel, and large bowel, resulting in various major acute abdominal events...
May 2017: Asian Journal of Endoscopic Surgery
https://www.readbyqxmd.com/read/28547896/assembly-of-breast-cancer-heterotypic-spheroids-on-hyaluronic-acid-coated-surfaces
#9
Marco P Carvalho, Elisabete C Costa, Ilídio J Correia
Drug screening is currently demanding for realistic models that are able to reproduce the structural features of solid tumors. 3D cell culture systems, namely spheroids, emerged as a promising approach to provide reliable results during drug development. So far, Liquid Overlay Technique (LOT) is one of the most used methods for spheroids assembly. It comprises cellular aggregation due to their limited adhesion to certain biomaterials, like agarose. However, researchers are currently improving this technique in order to obtain spheroids on surfaces that mimic cancer extracellular matrix (ECM), since cell-ECM interactions modulate cells behavior and their drug resistance profile...
May 25, 2017: Biotechnology Progress
https://www.readbyqxmd.com/read/28547877/comparative-study-of-osteogenic-activity-of-multilayers-made-of-synthetic-and-biogenic-polyelectrolytes
#10
Deepak Guduru, Marcus S Niepel, Cristina Gonzalez-Garcia, Manuel Salmeron-Sanchez, Thomas Groth
Polyelectrolyte multilayer (PEM) coatings on biomaterials are applied to tailor adhesion, growth, and function of cells on biomedical implants. Here, biogenic and synthetic polyelectrolytes (PEL) are used for layer-by-layer assembly to study the osteogenic activity of PEM with human osteosarcoma MG-63 cells in a comparative manner. Formation of PEM is achieved with biogenic PEL fibrinogen (FBG) and poly-l-lysine (PLL) as well as biotinylated chondroitin sulfate (BCS) and avidin (AVI), while poly(allylamine hydrochloride) (PAH) and polystyrene sulfonate (PSS) represent a fully synthetic PEM used as a reference system here...
May 26, 2017: Macromolecular Bioscience
https://www.readbyqxmd.com/read/28546960/microshear-bond-strength-of-nano-bond-adhesive-containing-nanosized-aluminum-trioxide-particles
#11
Yousef Mohammed Althomali, Mohamed Ismail Ebrahim
OBJECTIVES: The present study was conducted to evaluate the effect of nanosized aluminum trioxide (Al2O3) particles when added to the Nano-Bond adhesive system and its effect on the microshear bond strength of nanocomposite resin to dentin. MATERIALS AND METHODS: A newly developed adhesive (Nano-Bond) and one type of light-cured resin restorative material (nanocomposite resin) were used in this study. The occlusal surfaces of extracted human molar teeth were ground perpendicular to the long axis of each tooth to expose a flat dentin surface...
April 2017: Journal of Orthodontic Science
https://www.readbyqxmd.com/read/28546749/blocking-rhinoviral-adhesion-molecule-icam-1-potential-to-prevent-copd-exacerbations
#12
COMMENT
Shakti Dhar Shukla, Philip Michael Hansbro, Eugene Haydn Walters
No abstract text is available yet for this article.
2017: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/28546532/regulation-of-c-jun-n-terminal-protein-kinase-jnk-pathway-in-apoptosis-of-endothelial-outgrowth-cells-induced-by-asymmetric-dimethylarginine
#13
Fu-Qing Zhang, Wei Lu, Wen-Xiao Yuan, Xin Li
BACKGROUND Endothelial outgrowth cells (EOCs) are terminal endothelial progenitor cells (EPCs). Asymmetric dimethylarginine (ADMA) has been identified as a novel risk factor for cardiovascular diseases. Our aim in the present study was to investigate the effect of regulation of asymmetric dimethylarginine (ADMA) on EOCs apoptosis and to explore the underlining mechanisms of c-Jun N-terminal protein kinase (JNK) pathway in the process. MATERIAL AND METHODS EOCs were harvested from umbilical cord blood and obtained by using density gradient centrifugation and adhesive culture methods...
May 26, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28546458/proteoglycans-ion-channels-and-cell-matrix-adhesion
#14
REVIEW
Ioli Mitsou, Hinke A B Multhaupt, John R Couchman
Cell surface proteoglycans comprise a transmembrane or membrane-associated core protein to which one or more glycosaminoglycan chains are covalently attached. They are ubiquitous receptors on nearly all animal cell surfaces. In mammals, the cell surface proteoglycans include the six glypicans, CD44, NG2 (CSPG4), neuropilin-1 and four syndecans. A single syndecan is present in invertebrates such as nematodes and insects. Uniquely, syndecans are receptors for many classes of proteins that can bind to the heparan sulphate chains present on syndecan core proteins...
May 25, 2017: Biochemical Journal
https://www.readbyqxmd.com/read/28546328/microrna-15a-16-1-antagomir-ameliorates-ischemic-brain-injury-in-experimental-stroke
#15
Xinxin Yang, Xuelian Tang, Ping Sun, Yejie Shi, Kai Liu, Sulaiman H Hassan, R Anne Stetler, Jun Chen, Ke-Jie Yin
BACKGROUND AND PURPOSE: Dysregulation of the miR-15a/16-1 cluster in plasma has been reported in patients with stroke as a potential biomarker for diagnostic and prognostic use. However, the essential role and therapeutic potential of the miR-15a/16-1 cluster in ischemic stroke are poorly understood. This study is aimed at investigating the regulatory role of the miR-15a/16-1 cluster in ischemic brain injury and insight mechanisms. METHODS: Adult male miR-15a/16-1 knockout and wild-type mice, or adult male C57 BL/6J mice injected via tail vein with the miR-15a/16-1-specific inhibitor (antagomir, 30 pmol/g), were subjected to 1 hour of middle cerebral artery occlusion and 72 hours of reperfusion...
May 25, 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/28545889/car-a-key-regulator-of-adhesion-and-inflammation
#16
Elena Ortiz-Zapater, George Santis, Maddy Parsons
The coxsackie and adenovirus receptor (CAR) is a transmembrane receptor that plays a key role in controlling adhesion between adjacent epithelial cells. CAR is highly expressed in epithelial cells and was originally identified as a primary receptor for adenovirus cell binding. However, studies over the last 10 years have demonstrated that CAR plays a key role in co-ordinating cell-cell adhesion under homeostatic conditions including neuronal and cardiac development and cell junction stability; it has also been implicated in pathological states such as cancer growth and leukocyte transmigration during inflammation...
May 22, 2017: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/28545818/boron-nitride-nanotubes-as-novel-fillers-for-improving-the-properties-of-dental-adhesives
#17
Felipe Weidenbach Degrazia, Vicente Castelo Branco Leitune, Susana Maria Werner Samuel, Fabrício Mezzomo Collares
OBJECTIVE: This study aimed to evaluate the physical-chemical properties of experimental dental adhesives containing boron nitride nanotubes (BNNTs) as inorganic fillers. METHODS: An experimental adhesive resin was prepared using HEMA-BisGMA, 66/33 wt% (control). Inorganic BNNT fillers were first analyzed using scanning electron microscopy (SEM) and transmission electron microscopy (TEM) and then incorporated into the adhesive at different concentration (0.05, 0...
May 22, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28545768/elastin-microfibril-interface-located-protein-1-transforming-growth-factor-beta-and-implications-on-cardiovascular-complications
#18
REVIEW
Amy Randell, Noriko Daneshtalab
Elastin microfibril interface-located protein 1 (EMILIN1), a glycoprotein, is associated with elastin in the extracellular matrix (ECM) of arteries, lymph vasculature, and other tissues. EMILIN1 particularly has a niche role in elastin fiber biogenesis (elastogenesis) by aiding with the fusion of elastin fibers, rendering them more ordered. In addition to elastogenesis, EMILIN1 has been shown to have roles in maintenance of vascular cell morphology, smooth muscle cell adhesion to elastic fibers, and transforming growth factor (TGFβ) regulation, by inhibiting TGFβ activation via blocking the proteolytic production of the latency-associated peptide/active TGFβ complex...
May 3, 2017: Journal of the American Society of Hypertension: JASH
https://www.readbyqxmd.com/read/28545668/phenethyl-isothiocyanate-suppresses-cancer-stem-cell-properties-in-vitro-and-in-a-xenograft-model
#19
Ji Ho Yun, Kyung-A Kim, Gyhye Yoo, Sun Young Kim, Ji Min Shin, Jung Hoon Kim, Sang Hoon Jung, Jungho Kim, Chu Won Nho
BACKGROUND: Cancer stem cells (CSCs) are a subset of cells within the bulk of a tumor that have the ability to self-renew and differentiate, and are thus associated with cancer invasion, metastasis, and recurrence. Phenethyl isothiocyanate (PEITC) is a natural compound found in cruciferous vegetables such as broccoli and is used as a cancer chemopreventive agent; however, its effects on CSCs are little known. PURPOSE: To evaluate the effect of PEITC on CSCs in this study by examining CSC properties...
July 1, 2017: Phytomedicine: International Journal of Phytotherapy and Phytopharmacology
https://www.readbyqxmd.com/read/28545657/durability-of-a-low-shrinkage-tegdma-hema-free-resin-composite-system-in-class-ii-restorations-a-6-year-follow-up
#20
Jan W V van Dijken, Ulla Pallesen
OBJECTIVE: The objective of this randomized controlled prospective trial was to evaluate the durability of a low shrinkage and TEGDMA/HEMA-free resin composite system in posterior restorations in a 6-year follow up. METHODS: 139 Class II restorations were placed in 67 patients with a mean age of 53 years (range 29-82). Each participant received at random two, as similar as possible, Class II restorations. In the first cavity of each pair the TEGDMA/HEMA-free resin composite system was placed with its 3-step etch-and-rinse adhesive (cmf-els)...
May 22, 2017: Dental Materials: Official Publication of the Academy of Dental Materials
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