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https://www.readbyqxmd.com/read/28096261/tuning-collective-cell-migration-by-cell-cell-junction-regulation
#1
Peter Friedl, Roberto Mayor
Collective cell migration critically depends on cell-cell interactions coupled to a dynamic actin cytoskeleton. Important cell-cell adhesion receptor systems implicated in controlling collective movements include cadherins, immunoglobulin superfamily members (L1CAM, NCAM, ALCAM), Ephrin/Eph receptors, Slit/Robo, connexins and integrins, and an adaptive array of intracellular adapter and signaling proteins. Depending on molecular composition and signaling context, cell-cell junctions adapt their shape and stability, and this gradual junction plasticity enables different types of collective cell movements such as epithelial sheet and cluster migration, branching morphogenesis and sprouting, collective network migration, as well as coordinated individual-cell migration and streaming...
January 17, 2017: Cold Spring Harbor Perspectives in Biology
https://www.readbyqxmd.com/read/28095986/erratum-to-effects-of-eph-ephrin-mutations-on-pre-pulse-inhibition-in-mice-physiology-behavior-135-2014-232-236
#2
Andrea Liuzzo, Lincoln Gray, Matthew Wallace, Mark L Gabriele
No abstract text is available yet for this article.
January 14, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28095646/a-frog-s-view-of-ephrinb-signaling
#3
REVIEW
Yoo-Seok Hwang, Ira O Daar
Cell-cell and cell-substrate adhesion are essential to the proper formation and maintenance of tissue patterns during development, and deregulation of these processes can lead to invasion and metastasis of cancer cells. Cell surface adhesion and signaling molecules are key players in both normal development and cancer progression. One set of cell surface proteins, the Eph receptor tyrosine kinases and their membrane-bound ligands, ephrins, are significant regulators of these processes. During embryonic development, the Eph/ephrin signaling system is involved in cell-cell contact events that result in cell sorting and boundary formation between receptor and ligand bearing cells...
January 17, 2017: Genesis: the Journal of Genetics and Development
https://www.readbyqxmd.com/read/28080905/plasma-protein-electrophoresis-and-select-acute-phase-proteins-in-healthy-bonnethead-sharks-sphyrna-tiburo-under-managed-care
#4
Michael W Hyatt, Cara L Field, Tonya M Clauss, Kristopher L Arheart, Carolyn Cray
Preventative health care of elasmobranchs is an important but understudied field of aquatic veterinary medicine. Evaluation of inflammation through the acute phase response is a valuable tool in health assessments. To better assess the health of bonnethead sharks ( Sphyrna tiburo ) under managed care, normal reference intervals of protein electrophoresis (EPH) and the acute phase proteins, C-reactive protein (CRP) and haptoglobin (HP), were established. Blood was collected from wild caught, captive raised bonnethead sharks housed at public aquaria...
December 2016: Journal of Zoo and Wildlife Medicine: Official Publication of the American Association of Zoo Veterinarians
https://www.readbyqxmd.com/read/28071663/covalent-modification-of-pericardial-patches-for-sustained-rapamycin-delivery-inhibits-venous-neointimal-hyperplasia
#5
Hualong Bai, Jung Seok Lee, Elizabeth Chen, Mo Wang, Ying Xing, Tarek M Fahmy, Alan Dardik
Prosthetic grafts and patches are commonly used in cardiovascular surgery, however neointimal hyperplasia remains a significant concern, especially under low flow conditions. We hypothesized that delivery of rapamycin from nanoparticles (NP) covalently attached to patches allows sustained site-specific delivery of therapeutic agents targeted to inhibit localized neointimal hyperplasia. NP were covalently linked to pericardial patches using EDC/NHS chemistry and could deliver at least 360 ng rapamycin per patch without detectable rapamycin in serum; nanoparticles were detectable in the liver, kidney and spleen but no other sites within 24 hours...
January 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28062562/keep-your-friends-close-cell-cell-contact-and-skeletal-myogenesis
#6
Robert S Krauss, Giselle A Joseph, Aviva J Goel
Development of skeletal muscle is a multistage process that includes lineage commitment of multipotent progenitor cells, differentiation and fusion of myoblasts into multinucleated myofibers, and maturation of myofibers into distinct types. Lineage-specific transcriptional regulation lies at the core of this process, but myogenesis is also regulated by extracellular cues. Some of these cues are initiated by direct cell-cell contact between muscle precursor cells themselves or between muscle precursors and cells of other lineages...
January 6, 2017: Cold Spring Harbor Perspectives in Biology
https://www.readbyqxmd.com/read/28049947/stabilization-of-ephedrine-alkaloid-content-in-ephedra-sinica-by-selective-breeding-and-stolon-propagation
#7
Hajime Hiyama, Aya Ozawa, Hiroaki Kumazawa, Osami Takeda
The Ephedra herb, which has been used in Kampo medicines, originates from terrestrial stems of Ephedra species. It is important to establish cultivation methods and cultivars to secure a stable supply of the Ephedra herb that would meet the quality standards for the ephedrine alkaloids content. In this study, we first grew Ephedra sinica plants derived from seeds in the field for 5 years. Then, for selective breeding of cultivars that could meet the quality standards for the ephedrine alkaloids content, we measured the content of total alkaloids (TAs), ephedrine (Eph), and pseudoephedrine (PEph) in individual plants derived from seedlings and grown for 4 years in the field...
2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/27990336/overlooked-competing-asexual-and-sexually-typified-generic-names-of-ascomycota-with-recommendations-for-their-use-or-protection
#8
Amy Y Rossman, W Cavan Allen, Uwe Braun, Lisa A Castlebury, Priscila Chaverri, Pedro W Crous, David L Hawksworth, Kevin D Hyde, Peter Johnston, Lorenzo Lombard, Megan Romberg, Rob A Samson, Keith A Seifert, Jeffrey K Stone, Dhanushka Udayanga, James F White
With the change to one scientific name for fungal species, numerous papers have been published with recommendations for use or protection of competing generic names in major groups of ascomycetes. Although genera in each group of fungi were carefully considered, some competing generic names were overlooked. This paper makes recommendations for additional competing genera not considered in previous papers. Chairs of relevant Working Groups of the ICTF were consulted in the development of these recommendations...
December 2016: IMA Fungus
https://www.readbyqxmd.com/read/27986811/thyroid-cancer-ephb3-stimulates-cell-migration-and-metastasis-in-a-kinase-dependent-manner-through-vav2-rho-gtpase-axis
#9
Jing-Jing Li, Zhi-Jian Sun, Yan-Mei Yuan, Fen-Fen Yin, Yao-Gang Bian, Ling-Yun Long, Xue-Li Zhang, Dong Xie
Eph receptors, the largest subfamily of transmembrane tyrosine kinase receptors, have been increasingly implicated in various physiologic and pathologic processes, and the roles of the Eph family members during tumorigenesis have recently attracted growing attentions. In the present study, we explored the function of EphB3, one member of Eph family, in papillary thyroid cancer (PTC). We found that the expression of EphB3 was significantly elevated in PTC. Either overexpression of EphB3 or activation of EphB3 by EfnB1-Fc/EfnB2-Fc stimulated in vitro migration of PTC cells...
December 16, 2016: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/27986329/preemptive-hemodynamic-intervention-restricting-the-administration-of-fluids-attenuates-lung-edema-progression-in-oleic-acid-induced-lung-injury
#10
A Gil Cano, M Gracia Romero, M I Monge García, P Guijo González, J Ruiz Campos
OBJECTIVE: A study is made of the influence of preemptive hemodynamic intervention restricting fluid administration upon the development of oleic acid-induced lung injury. DESIGN: A randomized in vivo study in rabbits was carried out. SETTING: University research laboratory. SUBJECTS: Sixteen anesthetized, mechanically ventilated rabbits. VARIABLES: Hemodynamic measurements obtained by transesophageal Doppler signal...
December 14, 2016: Medicina Intensiva
https://www.readbyqxmd.com/read/27941904/the-role-of-grip1-and-ephrin-b3-in-blood-pressure-control-and-vascular-smooth-muscle-cell-contractility
#11
Yujia Wang, Zenghui Wu, Hongyu Luo, Junzheng Peng, John Raelson, Georg B Ehret, Patricia B Munroe, Ekatherina Stoyanova, Zhao Qin, Guy Cloutier, W Edward Bradley, Tao Wu, Jian-Zhong Shen, Shenjiang Hu, Jiangping Wu
Several erythropoietin-producing hepatocellular receptor B family (EPHB) and their ligands, ephrinBs (EFNBs), are involved in blood pressure regulation in animal models. We selected 528 single nucleotide polymorphisms (SNPs) within the genes of EPHB6, EFNB2, EFNB3 and GRIP1 in the EPH/EFN signalling system to query the International Blood Pressure Consortium dataset. A SNP within the glutamate receptor interacting protein 1 (GRIP1) gene presented a p-value of 0.000389, approaching the critical p-value of 0...
December 12, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27941840/enhancing-radiosensitization-in-ephb4-receptor-expressing-head-and-neck-squamous-cell-carcinomas
#12
Shilpa Bhatia, Kellen Hirsch, Jaspreet Sharma, Ayman Oweida, Anastacia Griego, Stephen Keysar, Antonio Jimeno, David Raben, Valery Krasnoperov, Parkash S Gill, Elena B Pasquale, Xiao-Jing Wang, Sana D Karam
Members of the Eph family of receptor tyrosine kinases have been implicated in a wide array of human cancers. The EphB4 receptor is ubiquitously expressed in head and neck squamous cell carcinoma (HNSCC) and has been shown to impart tumorigenic and invasive characteristics to these cancers. In this study, we investigated whether EphB4 receptor targeting can enhance the radiosensitization of HNSCC. Our data show that EphB4 is expressed at high to moderate levels in HNSCC cell lines and patient-derived xenograft (PDX) tumors...
December 12, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27928465/gene-expression-and-pathway-analysis-of-ctnnb1-in-cancer-and-stem-cells
#13
Shihori Tanabe, Takeshi Kawabata, Kazuhiko Aoyagi, Hiroshi Yokozaki, Hiroki Sasaki
AIM: To investigate β-catenin (CTNNB1) signaling in cancer and stem cells, the gene expression and pathway were analyzed using bioinformatics. METHODS: The expression of the catenin β 1 (CTNNB1) gene, which codes for β-catenin, was analyzed in mesenchymal stem cells (MSCs) and gastric cancer (GC) cells. Beta-catenin signaling and the mutation of related proteins were also analyzed using the cBioPortal for Cancer Genomics and HOMology modeling of Complex Structure (HOMCOS) databases...
November 26, 2016: World Journal of Stem Cells
https://www.readbyqxmd.com/read/27899328/the-s48-45-six-cysteine-proteins-mediators-of-interaction-throughout-the-plasmodium-life-cycle
#14
REVIEW
Silvia A Arredondo, Stefan H I Kappe
During their life cycle Plasmodium parasites rely upon an arsenal of proteins that establish key interactions with the host and vector, and between the parasite sexual stages, with the purpose of ensuring infection, reproduction and proliferation. Among these is a group of secreted or membrane-anchored proteins known as the six-cysteine (6-cys) family. This is a small but important family with only 14 members thus far identified, each stage-specifically expressed during the parasite life cycle. 6-cys proteins often localise at the parasite surface or interface with the host and vector, and are conserved in different Plasmodium species...
November 27, 2016: International Journal for Parasitology
https://www.readbyqxmd.com/read/27887830/drugs-of-abuse-and-their-metabolites-in-the-urban-rivers-of-beijing-china-occurrence-distribution-and-potential-environmental-risk
#15
Yan Zhang, Tingting Zhang, Changsheng Guo, Jiapei Lv, Zhendong Hua, Song Hou, Yuan Zhang, Wei Meng, Jian Xu
The occurrence and distribution of five drugs of abuse and their metabolites, namely, methamphetamine (METH), amphetamine (AMP), ketamine (KET), ephedrine (EPH), and hydroxylimine (HY), were investigated in the surface water in urban rivers in Beijing, China. A total of 117 surface water samples were collected from the seven rivers in the Beijing urban areas during four different seasons. Laboratory analyses revealed that EPH and METH were the most predominant drugs, with detection frequency ranging from 94% to 100% and from 65% to 100%, respectively...
February 1, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/27887627/epha5-protein-a-potential-marker-for-distinguishing-histological-grade-and-prognosis-in-ovarian-serous-carcinoma
#16
Xiao Chen, Xuan Wang, Xue Wei, Jiandong Wang
BACKGROUND: Ovarian serous carcinoma (OSC) is the most common ovarian epithelial malignancy. Disregulation of Eph/ephrin signaling has been implicated in oncogenesis and tumor progression. EphA5 receptor is one of large families of Eph tyrosine kinase receptor and is documented in the development of nervous system. Till now, there is no published data about the role of EphA5 in ovarian epithelial neoplasmas. METHODS: This study aims to investigate the expression of EphA5 protein in ovarian serous carcinoma, and its relationship to clinical pathological characteristics...
November 25, 2016: Journal of Ovarian Research
https://www.readbyqxmd.com/read/27869783/comparative-analysis-of-rnai-based-methods-to-down-regulate-expression-of-two-genes-expressed-at-different-levels-in-myzus-persicae
#17
Michaël Mulot, Sylvaine Boissinot, Baptiste Monsion, Maryam Rastegar, Gabriel Clavijo, David Halter, Nicole Bochet, Monique Erdinger, Véronique Brault
With the increasing availability of aphid genomic data, it is necessary to develop robust functional validation methods to evaluate the role of specific aphid genes. This work represents the first study in which five different techniques, all based on RNA interference and on oral acquisition of double-stranded RNA (dsRNA), were developed to silence two genes, ALY and Eph, potentially involved in polerovirus transmission by aphids. Efficient silencing of only Eph transcripts, which are less abundant than those of ALY, could be achieved by feeding aphids on transgenic Arabidopsis thaliana expressing an RNA hairpin targeting Eph, on Nicotiana benthamiana infected with a Tobacco rattle virus (TRV)-Eph recombinant virus, or on in vitro-synthesized Eph-targeting dsRNA...
November 19, 2016: Viruses
https://www.readbyqxmd.com/read/27868456/emergency-peripartum-hysterectomy-single-center-ten-year-experience
#18
Hüseyin Çağlayan Özcan, Mete Gurol Uğur, Özcan Balat, Neslihan Bayramoğlu Tepe, Seyhun Sucu
PURPOSE: The purpose of our study is to determine the incidence, risk factors, indications, outcomes, and complications of emergency peripartum hysterectomy (EPH) performed in a university hospital. METHODS: This retrospective study includes 54 cases of EPH performed at the department of obstetrics and gynecology of Gaziantep University Hospital between the years 2005-2015. We included all hysterectomy cases during the first 24 h after delivery beyond 20 weeks of gestation...
December 1, 2016: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/27861585/cdc-42-orients-cell-migration-during-epithelial-intercalation-in-the-caenorhabditis-elegans-epidermis
#19
Elise Walck-Shannon, Bethany Lucas, Ian Chin-Sang, David Reiner, Kraig Kumfer, Hunter Cochran, William Bothfeld, Jeff Hardin
Cell intercalation is a highly directed cell rearrangement that is essential for animal morphogenesis. As such, intercalation requires orchestration of cell polarity across the plane of the tissue. CDC-42 is a Rho family GTPase with key functions in cell polarity, yet its role during epithelial intercalation has not been established because its roles early in embryogenesis have historically made it difficult to study. To circumvent these early requirements, in this paper we use tissue-specific and conditional loss-of-function approaches to identify a role for CDC-42 during intercalation of the Caenorhabditis elegans dorsal embryonic epidermis...
2016: PLoS Genetics
https://www.readbyqxmd.com/read/27825440/ephrinb1-ephb3b-coordinate-bidirectional-epithelial-mesenchymal-interactions-controlling-liver-morphogenesis-and-laterality
#20
Jordi Cayuso, Aliaksandr Dzementsei, Johanna C Fischer, Gopal Karemore, Sara Caviglia, Josefin Bartholdson, Gavin J Wright, Elke A Ober
Positioning organs in the body often requires the movement of multiple tissues, yet the molecular and cellular mechanisms coordinating such movements are largely unknown. Here, we show that bidirectional signaling between EphrinB1 and EphB3b coordinates the movements of the hepatic endoderm and adjacent lateral plate mesoderm (LPM), resulting in asymmetric positioning of the zebrafish liver. EphrinB1 in hepatoblasts regulates directional migration and mediates interactions with the LPM, where EphB3b controls polarity and movement of the LPM...
November 7, 2016: Developmental Cell
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