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https://www.readbyqxmd.com/read/28098905/cripto-1-promotes-epithelial-mesenchymal-transition-in-prostate-cancer-via-wnt-%C3%AE-catenin-signaling
#1
Yan Liu, Zhenbang Qin, Kuo Yang, Ranlu Liu, Yong Xu
The Cripto-1 (CR-1) derived EGF-CFC family was overexpressed in tumor development enhancing proliferation, epithelial-mesenchymal transition (EMT) and migration of tumor cells. However, correlation between CR-1 and prostate cancer (PCa) remains still unclear. In the present study, we proved that CR-1 was expressed in PCa and its function was in the progression of PCa. Compared with benign prostatic hyperplasia (BPH) tissues, we confirmed that PCa tissues had high expression of CR-1 by immunohistochemistry and statistical data showed that CR-1 promoted properties of EMT in PCa tissues, including the downregulation of the cell adhesion molecules β-catenin (membrane) and E-cadherin while upregulating transcription factors β-catenin...
January 17, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28098886/novel-zinc-phthalocyanine-as-a-promising-photosensitizer-for-photodynamic-treatment-of-esophageal-cancer
#2
Weronika Kuzyniak, Jacob Schmidt, Wojciech Glac, Janine Berkholz, Gustav Steinemann, Björn Hoffmann, Eugeny A Ermilov, Ayşe Gül Gürek, Vefa Ahsen, Bianca Nitzsche, Michael Höpfner
Photodynamic therapy (PDT) has gathered much attention in the field of cancer treatment and is increasingly used as an alternative solution for esophageal cancer therapy. However, there is a constant need for improving the effectiveness and tolerability of the applied photosensitizers (PS). Here, we propose tetra-triethyleneoxysulfonyl substituted zinc phthalocyanine (ZnPc) as a promising PS for photodynamic treatment of esophageal cancer. ZnPc-induced phototoxicity was studied in two human esophageal cancer cell lines: OE-33 (adenocarcinoma) and Kyse-140 (squamous cell carcinoma)...
January 17, 2017: International Journal of Oncology
https://www.readbyqxmd.com/read/28098860/chondroitin-sulfate-proteoglycan-protein-is-stimulated-by-interleukin%C3%A2-11-and-promotes-endometrial-epithelial-cancer-cell-proliferation-and-migration
#3
Amy Winship, Michelle Van Sinderen, Ariella Heffernan-Marks, Eva Dimitriadis
Endometrial cancer is the most common gynecological cancer. We identified interleukin 11 (IL11) as a critical mediator of endometrial tumourigenesis and demonstrated that IL11 regulates chondroitin sulfate proteoglycan (CSPG4) in human placental trophoblasts. CSPG4 is a cell membrane protein overexpressed in numerous human cancers, although its role in endometrial cancer has not been investigated. We examined CSPG4 expression and localization in primary human type I endometrioid grade (G) 1-3 tumours by qPCR and immunohistochemistry and determined whether IL11 stimulated CSPG4...
January 13, 2017: International Journal of Oncology
https://www.readbyqxmd.com/read/28098816/estrogen-enhances-the-expression-of-the-multidrug-transporter-gene-abcg2-increasing-drug-resistance-of-breast-cancer-cells-through-estrogen-receptors
#4
Fung-Wei Chang, Hueng-Chuen Fan, Jui-Ming Liu, Tai-Ping Fan, Jin Jing, Chia-Ling Yang, Ren-Jun Hsu
BACKGROUND: Multidrug resistance is a major obstacle in the successful therapy of breast cancer. Studies have proved that this kind of drug resistance happens in both human cancers and cultured cancer cell lines. Understanding the molecular mechanisms of drug resistance is important for the reasonable design and use of new treatment strategies to effectively confront cancers. RESULTS: In our study, ATP-binding cassette sub-family G member 2 (ABCG2), adenosine triphosphate (ATP) synthase and cytochrome c oxidase subunit VIc (COX6C) were over-expressed more in the MCF-7/MX cell line than in the normal MCF7 cell line...
January 14, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28098806/antibacterial-activities-and-possible-modes-of-action-of-acacia-nilotica-l-del-against-multidrug-resistant-escherichia-coli-and-salmonella
#5
Muhammad Bilal Sadiq, Joel Tarning, Tay Zar Aye Cho, Anil Kumar Anal
Medicinal plants are frequently used for the treatment of various infectious diseases. The objective of this study was to evaluate the antibacterial activity and mode of action of Acacia nilotica and the antibiogram patterns of foodborne and clinical strains of Escherichia coli and Salmonella. The mechanism of action of acacia extracts against E. coli and Salmonella was elucidated by observing morphological damages including cell integrity and cell membrane permeability, as well as changes in cell structures and growth patterns in kill-time experiments...
January 14, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28098781/distinct-neurotoxicity-profile-of-listeriolysin-o-from-listeria-monocytogenes
#6
Jana Maurer, Sabrina Hupp, Carolin Bischoff, Christina Foertsch, Timothy J Mitchell, Trinad Chakraborty, Asparouh I Iliev
Cholesterol-dependent cytolysins (CDCs) are protein toxins that originate from Gram-positive bacteria and contribute substantially to their pathogenicity. CDCs bind membrane cholesterol and build prepores and lytic pores. Some effects of the toxins are observed in non-lytic concentrations. Two pathogens, Streptococcus pneumoniae and Listeria monocytogenes, cause fatal bacterial meningitis, and both produce toxins of the CDC family-pneumolysin and listeriolysin O, respectively. It has been demonstrated that pneumolysin produces dendritic varicosities (dendrite swellings) and dendritic spine collapse in the mouse neocortex, followed by synaptic loss and astrocyte cell shape remodeling without elevated cell death...
January 13, 2017: Toxins
https://www.readbyqxmd.com/read/28098764/iqgap1-in-podosomes-invadosomes-is-involved-in-the-progression-of-glioblastoma-multiforme-depending-on-the-tumor-status
#7
Deborah Rotoli, Natalia Dolores Pérez-Rodríguez, Manuel Morales, María Del Carmen Maeso, Julio Ávila, Ali Mobasheri, Pablo Martín-Vasallo
Glioblastoma multiforme (GBM) is the most frequent and aggressive primary brain tumor. GBM is formed by a very heterogeneous astrocyte population, neurons, neovascularization and infiltrating myeloid cells (microglia and monocyte derived macrophages). The IQGAP1 scaffold protein interacts with components of the cytoskeleton, cell adhesion molecules, and several signaling molecules to regulate cell morphology and motility, cell cycle and other cellular functions. IQGAP1 overexpression and delocalization has been observed in several tumors, suggesting a role for this protein in cell proliferation, transformation and invasion...
January 13, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28098738/subretinal-cell-based-therapy-an-analysis-of-surgical-variables-to-increase-cell-survival
#8
David J Wilson, Martha Neuringer, Jonathan Stoddard, Lauren M Renner, Steven Bailey, Andreas Lauer, Trevor J McGill
PURPOSE: To develop a novel surgical approach to provide consistent delivery of cell suspension into the subretinal space without cell leakage into the vitreous. METHODS: Cell viability was assessed following mock injections to determine the optimal size cannula for delivery of the cells. A pars plana without vitrectomy approach was used to create a subretinal bleb with balanced salt solution using a 41-gauge cannula. GFP-labeled retinal pigment epithelium cells were injected through transretinal (n = 8) and transscleral (n = 16) injection approaches...
January 16, 2017: Retina
https://www.readbyqxmd.com/read/28098729/vitrectomy-for-persistent-macular-holes-following-ocriplasmin-injection-a-comparative-multicenter-study
#9
Ricarda G Schumann, Armin Wolf, Hans Hoerauf, Albrecht Lommatzsch, Mathias Maier, Joachim Wachtlin, Michael J Koss, Thomas Kreutzer, Thomas Bertelmann, Sara Kazerounian, Stefan Mennel, Siegfried G Priglinger
PURPOSE: To determine functional and anatomical outcomes of pars plana vitrectomy for persistent full-thickness macular hole (MH) after intravitreal injection of ocriplasmin. METHODS: This is a multicenter retrospective interventional study of 37 eyes of 37 patients who underwent pars plana vitrectomy with internal limiting membrane peeling for persistent MH after ocriplasmin treatment between December 2013 and December 2015 and comparison with 35 eyes of 35 patients who were offered ocriplasmin injection but underwent pars plana vitrectomy alone without pharmacologic vitreolysis before surgery...
January 16, 2017: Retina
https://www.readbyqxmd.com/read/28098728/peripapillary-retinal-nerve-fiber-thickness-changes-after-vitrectomy-for-epiretinal-membrane-in-eyes-with-and-without-vitreous-detachment
#10
Cesare Mariotti, Michele Nicolai, Antonio Longo, Francesca Viti, Elisa Bambini, Andrea Saitta, Vittorio Pirani, Emanuele Orsini, Daniela Baruffa, Michele Reibaldi
PURPOSE: To compare the changes in postoperative peripapillary retinal nerve fiber layer (p-RNFL) thickness after vitrectomy for epiretinal membrane in eyes with preexisting posterior vitreous detachment (PVD) and eyes with surgically induced PVD. METHODS: This study included consecutive patients who underwent 25-gauge vitrectomy for epiretinal membrane. Eyes were divided, according to intraoperative PVD status, into a preexisting PVD group and surgically induced PVD group...
January 16, 2017: Retina
https://www.readbyqxmd.com/read/28098725/how-vitreomacular-interface-modifies-the-efficacy-of-anti-vegf-therapy-for-myopic-choroidal-neovascularization
#11
Pierluigi Iacono, Maurizio Battaglia Parodi, Lorenzo Iuliano, Francesco Bandello
PURPOSE: To evaluate the efficacy of intravitreal ranibizumab in the treatment of myopic choroidal neovascularization (mCNV) complicated by vitreoretinal interface alterations. METHODS: Thirty-two patients affected by mCNV and concurrent vitreoretinal interface disorders, including macular epiretinal membrane (18 patients), lamellar macular hole (4 patients), full-thickness macular hole (1 patient), broad/focal vitreomacular traction (3 patients), broad/focal vitreomacular adhesion (4 patients), and myopic foveoschisis (2 patients), were enrolled in a prospective study...
January 16, 2017: Retina
https://www.readbyqxmd.com/read/28098723/assessment-of-the-internal-limiting-membrane-status-when-a-macular-epiretinal-membrane-is-removed-in-a-prospective-study
#12
Daniel Vila Solà, Cristofer Nienow, Ignasi Jürgens
PURPOSE: To describe the presence and integrity of the internal limiting membrane (ILM) after removal of the macular epiretinal membrane (ERM) and to investigate the accuracy of tissue identification using surgical dyes when compared to histopathology results. METHODS: Patients with idiopathic ERM were enrolled in a prospective study and randomized to one of two surgical techniques. In one (Group M), only the ERM was deliberately removed and in the other (Group L) the ILM was also removed...
January 16, 2017: Retina
https://www.readbyqxmd.com/read/28098650/was-the-intraaortic-balloon-pumping-under-venoarterial-extracorporeal-membrane-oxygenation-really-effective-in-reducing-the-mortality-of-cardiogenic-patients
#13
Toshinobu Yamagishi, Tomoko Sakatani, Yukihiro Kitamura, Masahiro Kashiura
No abstract text is available yet for this article.
February 2017: Critical Care Medicine
https://www.readbyqxmd.com/read/28098634/long-term-survival-after-extracorporeal-membrane-oxygenation-therapy-the-attention-it-deserves
#14
Philipp A Pickerodt, Roland C E Francis, Steffen Weber-Carstens
No abstract text is available yet for this article.
February 2017: Critical Care Medicine
https://www.readbyqxmd.com/read/28098624/long-term-survival-in-adults-treated-with-extracorporeal-membrane-oxygenation-for-respiratory-failure-and-sepsis
#15
Viktor von Bahr, Jan Hultman, Staffan Eksborg, Björn Frenckner, Håkan Kalzén
OBJECTIVE: The use of extracorporeal membrane oxygenation in adults with respiratory failure and sepsis is steadily increasing, but the knowledge on long-term survival in this group is scarce. The aim of the present study was to investigate the 5-year survival rates and causes of late death in this group of patients. DESIGN: Single-center retrospective cohort study. SETTING: Karolinska University Hospital, Stockholm, Sweden. PATIENTS: Adult patients treated with extracorporeal membrane oxygenation for respiratory failure and sepsis between the service being established for adults in 1995 and December 2013...
February 2017: Critical Care Medicine
https://www.readbyqxmd.com/read/28098465/rejection-of-commonly-used-electrolyte-in-asymmetric-flow-field-flow-fractionation-effects-of-membrane-molecular-weight-cut-off-size-fluid-dynamics-and-valence-of-electrolytes
#16
Thilak K Mudalige, Haiou Qu, Sean W Linder
Asymmetric flow field flow fractionation (AF4) is an efficient size based separation technique for the characterization of submicron size particulates. In AF4, membranes having various molecular weight cut-off sizes are used as a barrier to retain particles while allowing carrier fluid containing electrolytes to permeate. Here, we hypothesized that electrolyte rejection by the barrier membrane lead to the accumulation of the electrolytes in the channel during operation. Electrolyte accumulation can cause various adverse effects which can lead to membrane fouling...
January 18, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28098449/targeting-type-2-diabetes-with-c-glucosyl-dihydrochalcones-as-selective-sodium-glucose-co-transporter-2-sglt2-inhibitors-synthesis-and-biological-evaluation
#17
Ana R Jesus, Diogo Vila-Viçosa, Miguel Machuqueiro, Ana P Marques, Timothy M Dore, Amélia P Rauter
Inhibiting glucose reabsorption by sodium glucose co-transporter proteins (SGLTs) in the kidneys is a relatively new strategy for treating type 2 diabetes. Selective inhibition of SGLT2 over SGLT1 is critical for minimizing adverse side effects associated with SGLT1 inhibition. A library of C-glucosyl dihydrochalcones and their dihydrochalcone and chalcone precursors was synthesized and tested as SGLT1/SGLT2 inhibitors using a cell-based fluorescence assay of glucose uptake. The most potent inhibitors of SGLT2 (IC50 = 9-23 nM) were considerably weaker inhibitors of SGLT1 (IC50 = 10-19 μM)...
January 18, 2017: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28098447/the-stories-tryptophans-tell-exploring-protein-dynamics-of-heptosyltransferase-i-from-escherichia-coli
#18
Joy M Cote, Carlos Andres Ramirez-Mondragon, Zarek S Siegel, Daniel Joseph Czyzyk, Jiali Gao, Yuk Yin Sham, Ishita Mukerji, Erika A Taylor
Heptosyltransferase I (HepI) catalyzes the addition of a single L-glycero-β-D-manno-heptose sugar (heptose) onto the membrane incorporated Kdo2-Lipid A as part of the biosynthesis of the core region of lipopolysaccharide (LPS). Gram-negative bacteria with gene knockouts of HepI have reduced virulence with enhanced susceptibility to hydrophobic antibiotics, making design of inhibitors against HepI of interest. Previous studies have shown that HepI protein dynamics are partially rate limiting, and therefore disruption of protein dynamics might provide a new strategy for inhibiting HepI...
January 18, 2017: Biochemistry
https://www.readbyqxmd.com/read/28098432/a-multi-mitochondrial-anticancer-agent-that-selectively-kills-cancer-cells-and-overcomes-drug-resistance
#19
Yong Bo Peng, Zi Long Zhao, Teng Liu, Guo Jian Xie, Cheng Jin, Tang Gang Deng, Yang Sun, Xiong Li, Xiao Xiao Hu, Xiao Bing Zhang, Mao Ye, Wei Hong Tan
Mitochondria are double-membrane-bound organelles involved mainly in supplying cellular energy, but also play roles in signaling, cell differentiation, and cell death. Mitochondria are implicated in carcinogenesis, and therefore dozens of lethal signal transduction pathways converge on these organelles. Accordingly, mitochondria provide an alternative target for cancer management. In this study, F16, a drug that targets mitochondria, and chlorambucil (CBL), which is indicated for the treatment of selected human neoplastic diseases, were covalently linked, resulting in the synthesis of a multi-mitochondrial anticancer agent, FCBL...
January 18, 2017: ChemMedChem
https://www.readbyqxmd.com/read/28098416/motuporamine-derivatives-as-antimicrobial-agents-and-antibiotic-enhancers-against-resistant-gram-negative-bacteria
#20
Diane Borselli, Marine Blanchet, Jean-Michel Bolla, Aaron Muth, Kristen Skruber, Otto Phanstiel, Jean Michel Brunel
Dihydromotuporamine C and its derivatives were evaluated for their in vitro antimicrobial activities and antibiotic enhancement properties against Gram-negative bacteria and clinical isolates. The mechanism of action of one of these derivatives, MOTU-N44, was investigated against Enterobacter aerogenes by using fluorescent dyes to evaluate outer-membrane depolarization and permeabilization. Its efficiency correlated with inhibition of dye transport, thus suggesting that these molecules inhibit drug transporters by de-energization of the efflux pump rather than by direct interaction of the molecule with the pump...
January 18, 2017: Chembiochem: a European Journal of Chemical Biology
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