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https://www.readbyqxmd.com/read/28214893/the-role-of-netrins-and-their-receptors-in-epithelial-mesenchymal-plasticity-during-development
#1
Michael J Murray
Transitions between mesenchymal and epithelial cells are underpinned by changes in motility, adhesion, and polarity. Netrins and their receptors can control each of these cellular properties, and are emerging as important regulators of epithelial mesenchymal plasticity (EMP). Netrins were first identified in the worm Caenorhabditis elegans as secreted chemoattractants/repellents that could guide migrating mesodermal cells and axonal growth cones. Orthologues were subsequently found to play conserved roles in vertebrates and in the vinegar fly Drosophila...
2017: Cells, Tissues, Organs
https://www.readbyqxmd.com/read/28214884/transient-receptor-potential-melastatin-4-trpm4-contributes-to-high-salt-diet-mediated-early-stage-endothelial-injury
#2
Xiao-Qing Ding, Tao Ban, Zeng-Yan Liu, Jie Lou, Liang-Liang Tang, Jia-Xin Wang, Wen-Feng Chu, Dan Zhao, Bin-Lin Song, Zhi-Ren Zhang
BACKGROUND/AIMS: The present study investigated whether the transient receptor potential melastatin 4 (TRPM4) channel plays a role in high salt diet (HSD)-induced endothelial injuries. METHODS: Western blotting and immunofluorescence were used to examine TRPM4 expression in the mesenteric endothelium of Dahl salt-sensitive (SS) rats fed a HSD. The MTT, TUNEL, and transwell assays were used to evaluate the cell viability, cell apoptosis, and cell migration, respectively, of human umbilical vein endothelial cells (HUVECs)...
February 16, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28214855/fatty-acid-binding-protein-4-in-endometrial-epithelium-is-involved-in-embryonic-implantation
#3
Peng Wang, Qiuyuan Zhu, Huilian Peng, Mengkai Du, Minyue Dong, Hanzhi Wang
AIMS: To clarify the role of fatty acid-binding protein 4 (FABP4) of endometrial epithelial cell in the establishment and maintenance of pregnancy and the involvement in the pathogenesis of pregnancy loss. METHODS: The expression of FABP4 and uterine receptive factor (LIF, Integrin-β3 and Claudin 4) was determined by Western blotting or quantitative PCR. FABP4 siRNA was used to silence FABP4 while FABP4 inhibitor was used to inhibit the function of FABP4 in endometrial epithelial cell...
January 30, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28214843/metabolites-of-hypoxic-cardiomyocytes-induce-the-migration-of-cardiac-fibroblasts
#4
Huairui Shi, Xuehong Zhang, Zekun He, Zhiyong Wu, Liya Rao, Yushu Li
BACKGROUND: The migration of cardiac fibroblasts to the infarct region plays a major role in the repair process after myocardial necrosis or damage. However, few studies investigated whether early hypoxia in cardiomyocytes induces the migration of cardiac fibroblasts. The purpose of this study was to assess the role of metabolites of early hypoxic cardiomyocytes in the induction of cardiac fibroblast migration. METHODS: Neonatal rat heart tissue was digested with a mixture of trypsin and collagenase at an appropriate ratio...
January 27, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28214842/inhibition-of-methylglyoxal-induced-ages-rage-expression-contributes-to-dermal-protection-by-n-acetyl-l-cysteine
#5
Chun-Tao Yang, Fu-Hui Meng, Li Chen, Xiang Li, Lai-Jian Cen, Yu-Hua Wen, Cai-Chen Li, Hui Zhang
BACKGROUND/AIM: Accumulation of advanced glycation end products (AGEs) is a major cause of diabetes mellitus (DM) skin complications. Methylglyoxal (MGO), a reactive dicarbonyl compound, is a crucial intermediate of AGEs generation. N-acetyl-L-cysteine (NAC), an active ingredient of some medicines, can induce endogenous GSH and hydrogen sulfide generation, and set off a condensation reaction with MGO. However, there is rare evidence to show NAC can alleviate DM-induced skin injury through inhibition of AGEs generation or toxicity...
13, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28214836/hepatitis-b-virus-x-protein-reduces-podocyte-adhesion-via-downregulation-of-%C3%AE-3%C3%AE-1-integrin
#6
Ping He, Dajun Liu, Beiru Zhang, Guangyu Zhou, Xuesong Su, Yanqiu Wang, Detian Li, Xu Yang
BACKGROUND/AIMS: Hepatitis B virus (HBV)-associated glomerulonephritis (HBV-GN) is characterized by a reduced number of podocytes due to apoptosis and shedding from the basement membrane. However, the pathological mechanism of HBV-GN is unclear. We previously showed that hepatitis B virus X protein (HBx) promotes apoptosis in tubular epithelial cells. In this study, we transfected podocytes with HBx and examined the effects on adhesion and apoptosis of these cells. METHODS: Podocytes were transfected with pc-DNA3...
February 8, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28214756/multifarious-applications-of-atomic-force-microscopy-in-forensic-science-investigations
#7
REVIEW
Gaurav Pandey, Maithri Tharmavaram, Deepak Rawtani, Sumit Kumar, Y Agrawal
Forensic science is a wide field comprising of several subspecialties and uses methods derived from natural sciences for finding criminals and other evidence valid in a legal court. A relatively new area; Nano-forensics brings a new era of investigation in forensic science in which instantaneous results can be produced that determine various agents such as explosive gasses, biological agents and residues in different crime scenes and terrorist activity investigations. This can be achieved by applying Nanotechnology and its associated characterization techniques in forensic sciences...
February 11, 2017: Forensic Science International
https://www.readbyqxmd.com/read/28214735/rna-based-control-mechanisms-of-clostridium-difficile
#8
REVIEW
Olga Soutourina
Clostridium difficile (CD)-associated diarrhoea is currently the most prevalent nosocomial diarrhoea worldwide. Many characteristics of CD pathogenicity remain poorly understood. Recent data strongly indicate the importance of an RNA network for the control of gene expression in CD. More than 200 regulatory RNAs have been identified by deep sequencing and targeted approaches, including Hfq-dependent trans riboregulators, cis-antisense RNAs, CRISPR RNAs, and c-di-GMP-responsive riboswitches. These regulatory RNAs are involved in the control of major processes in the CD infection cycle, for example motility, biofilm formation, adhesion, sporulation, stress response, and defence against bacteriophages...
February 16, 2017: Current Opinion in Microbiology
https://www.readbyqxmd.com/read/28214706/influence-of-oxygen-partial-pressure-on-the-characteristics-of-human-hepatocarcinoma-cells
#9
Jenifer Trepiana, Susana Meijide, Rosaura Navarro, M Luisa Hernández, José Ignacio Ruiz-Sanz, M Begoña Ruiz-Larrea
Most of the in vitro studies using liver cell lines have been performed under atmospheric oxygen partial pressure (21% O2). However, the oxygen concentrations in the liver and cancer cells are far from this value. In the present study, we have evaluated the influence of oxygen on 1) the tumor cell lines features (growth, steady-state ROS levels, GSH content, activities of antioxidant enzymes, p66 Shc and SOD expressions, metalloproteinases secretion, migration, invasion, and adhesion) of human hepatocellular carcinoma cell lines, and b) the response of the cells to an oxidant stimulus (aqueous leaf extract of the V...
February 13, 2017: Redox Biology
https://www.readbyqxmd.com/read/28214537/biomechanical-behavior-of-endodontically-treated-premolars-using-different-preparation-designs-and-cad-cam-materials
#10
Diogo Pedrollo Lise, Annelies Van Ende, Jan De Munck, Thaís Yumi Umeda Suzuki, Luiz Clovis Cardoso Vieira, Bart Van Meerbeek
OBJECTIVES: To evaluate the effect of restoration design ('2.5-mm deep endocrown', '5-mm deep endocrown' or '5-mm deep post&crown') and CAD/CAM material type (composite or lithium disilicate glass-ceramic) on the load-to-failure of endodontically treated premolars in absence of any ferrule. METHODS: The crowns of 48 single-rooted premolars were cut and the roots were endodontically treated. Teeth were randomly divided into six groups (n=8); teeth in each group were restored using one of the two tested materials with standardized CAD/CAM fabricated endocrowns (with either 2...
February 15, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28214467/paxillin-a-crossroad-in-pathological-cell-migration
#11
REVIEW
Ana María López-Colomé, Irene Lee-Rivera, Regina Benavides-Hidalgo, Edith López
Paxilllin is a multifunctional and multidomain focal adhesion adapter protein which serves an important scaffolding role at focal adhesions by recruiting structural and signaling molecules involved in cell movement and migration, when phosphorylated on specific Tyr and Ser residues. Upon integrin engagement with extracellular matrix, paxillin is phosphorylated at Tyr31, Tyr118, Ser188, and Ser190, activating numerous signaling cascades which promote cell migration, indicating that the regulation of adhesion dynamics is under the control of a complex display of signaling mechanisms...
February 18, 2017: Journal of Hematology & Oncology
https://www.readbyqxmd.com/read/28214372/canonical-and-cellular-pathways-timing-gamete-release-in-acropora-digitifera-okinawa-japan
#12
Y Rosenberg, T Doniger, S Harii, F Sinniger, O Levy
Natural light cycles are important for synchronizing behavioral and physiological rhythms over varying time-periods in both plants and animals. An endogenous clock, regulated by positive and negative elements, interacting in feedback loops, control these rhythms. Many corals exhibit diel cycles of polyp expansion and contraction entrained by solar light patterns and monthly cycles of spawning or planulation that correspond to nocturnal lunar light cycles. However, despite considerable interest in studies of coral reproduction, there is currently not enough molecular information about the cellular pathways involved with synchronizing spawning/planulation in broadcast spawners and brooders...
February 18, 2017: Molecular Ecology
https://www.readbyqxmd.com/read/28214340/molecular-tiling-on-the-surface-of-a-bacterial-spore-the-exosporium-of-the-bacillus-anthracis-cereus-thuringiensis-group
#13
Cassandra Terry, Shuo Jiang, David S Radford, Wan Qiang, Svetomir Tzokov, Anne Moir, Per A Bullough
Bacteria of the genera Bacillus and Clostridium form highly resistant spores, which in the case of some pathogens act as the infectious agents. An exosporium forms the outermost layer of some spores; it plays roles in protection, adhesion, dissemination, host targeting in pathogens, and germination control. The exosporium of the Bacillus cereus group, including the anthrax pathogen, contains a 2D-crystalline basal layer, overlaid by a hairy nap. BclA and related proteins form the hairy nap, and require ExsFA (BxpB) for their localisation on the basal layer...
February 18, 2017: Molecular Microbiology
https://www.readbyqxmd.com/read/28214294/ptk6-localized-at-the-plasma-membrane-promotes-cell-proliferation-and-migration-through-phosphorylation-of-eps8
#14
Won-Sik Shin, Hyun Jae Shim, Young Hun Lee, Minju Pyo, Jun Sang Park, So Yun Ahn, Seung-Taek Lee
Protein tyrosine kinase 6 (PTK6; also known as Brk) is closely related to the Src family kinases, but lacks a membrane-targeting myristoylation signal. Sublocalization of PTK6 at the plasma membrane enhances its oncogenic potential. To understand the mechanism(s) underlying the oncogenic property of plasma-membrane-associated PTK6, proteins phosphorylated by membrane-targeted myristoylated PTK6 (Myr-PTK6) were enriched and analyzed using a proteomics approach. Eps8 which was identified by this method is phosphorylated by Myr-PTK6 in HEK293 cells...
February 18, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28214208/reduced-immunohistochemical-expression-of-adhesion-molecules-in-vitiligo-skin-biopsies
#15
Adriane Reichert Faria, Juliana Elizabeth Jung, Caio César Silva de Castro, Lucia de Noronha
Because defects in adhesion impairment seem to be involved in the etiopathogenesis of vitiligo, this study aimed to compare the immunohistochemical expression of several adhesion molecules in the epidermis of vitiligo and non lesional vitiligo skin. Sixty-six specimens of lesional and non lesional skin from 33 volunteers with vitiligo were evaluated by immunohistochemistry using anti-beta-catenin, anti-E-cadherin, anti-laminin, anti-beta1 integrin, anti-collagen IV, anti-ICAM-1 and anti-VCAM-1 antibodies. Biopsies of vitiligo skin demonstrated a significant reduction in the expression of laminin and integrin...
December 30, 2016: Pathology, Research and Practice
https://www.readbyqxmd.com/read/28214190/biofilm-formation-by-staphylococcus-aureus-isolates-from-a-dental-clinic-in-konya-turkey
#16
Emrah Torlak, Emre Korkut, Ali T Uncu, Yağmur Şener
The ability of Staphylococcus aureus to form biofilm is considered to be a major virulence factor influencing its survival and persistence in both the environment and the host. Biofilm formation in S. aureus is most frequently associated with production of polysaccharide intercellular adhesion by ica operon-encoded enzymes. The present work aimed at evaluating the in vitro biofilm production and presence of the icaA and icaD genes in S. aureus isolates from a dental clinic in Konya, Turkey. The surfaces of inanimate objects were sampled over a period of six months...
February 14, 2017: Journal of Infection and Public Health
https://www.readbyqxmd.com/read/28214102/vitreomacular-adhesion-and-the-risk-of-neovascular-age-related-macular-degeneration
#17
Emilia Maggio, Antonio Polito, Massimo Guerriero, Guido Prigione, Barbara Parolini, Grazia Pertile
PURPOSE: To assess the prevalence of vitreomacular adhesion (VMA) in consecutive naïve eyes diagnosed with exudative age-related macular degeneration (AMD) in comparison with eyes with nonexudative AMD and age-matched controls, and to evaluate prospectively the incidence of vitreomacular interface changes over time and their influence on choroidal neovascularization (CNV) development. DESIGN: Retrospective cross-sectional analysis and longitudinal cohort study conducted at Sacrocuore Hospital, Negrar, Verona, Italy...
February 14, 2017: Ophthalmology
https://www.readbyqxmd.com/read/28213973/transforming-growth-factor-%C3%AE-induces-bone-marrow-mesenchymal-stem-cell-migration-via-noncanonical-signals-and-n-cadherin
#18
Maria Jose Dubon, Jinyeong Yu, Sanghyuk Choi, Ki-Sook Park
Transforming growth factor-beta (TGF-β) induces the migration and mobilization of bone marrow-derived mesenchymal stem cells (BM-MSCs) to maintain bone homeostasis during bone remodeling and facilitate the repair of peripheral tissues. Although many studies have reported the mechanisms through which TGF-β mediates the migration of various types of cells, including cancer cells, the intrinsic cellular mechanisms underlying cellular migration and mobilization of BM-MSCs mediated by TGF-β are unclear. In this study, we showed that TGF-β activated noncanonical signaling molecules, such as Akt, extracellular signal-regulated kinase 1/2 (ERK1/2), focal adhesion kinase (FAK), and p38, via TGF-β type I receptor in human BM-MSCs and murine BM-MSC-like ST2 cells...
February 18, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28213972/promotion-of-cell-growth-and-adhesion-of-a-peptide-hydrogel-scaffold-via-mtor-cadherin-signaling
#19
Guojun Wei, Liping Wang, Daming Dong, Zhaowei Teng, Zuowei Shi, Kaifu Wang, Gang An, Ying Guan, Bo Han, Meng Yao, Cory J Xian
Understanding neurite outgrowth, orientation, and migration is important for the design of biomaterials that interface with the neural tissue. However, the molecular signaling alternations have not been well elucidated to explain the impact of hydrogels on cell morphology. In our previous studies, a silk fibroin peptide (SF16) hydrogel was found to be an effective matrix for the viability, morphology and proliferation of PC12 rat pheocrhomocytoma cells. We found that PC12 cells in the peptide hydrogel exhibited adhesive morphology compared to those cultured in agarose or collagen...
February 18, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28213935/effect-of-a-one-step-self-etch-adhesive-on-endogenous-dentin-matrix-metalloproteinases
#20
Fabianni M Apolonio, Annalisa Mazzoni, Valeria Angeloni, Polliana M C Scaffa, Spartaco Santi, Vicente de Paulo A Saboia, Franklin R Tay, David H Pashley, Lorenzo Breschi
Degradation of the hybrid layer created in dentin by dentin adhesives is caused by enzyme activities present within the dentin matrix that destroy unprotected collagen fibrils. The aim of the present study was to evaluate the effect of a one-step self-etch adhesive system on dentinal matrix metalloproteinases 2 and 4 (MMP-2 and MMP-9, respectively) using in situ zymography and an enzymatic activity assay. The null hypothesis tested was that there are no differences in the activities of dentinal MMPs before and after treatment with a one-step adhesive system...
February 17, 2017: European Journal of Oral Sciences
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