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https://www.readbyqxmd.com/read/27914156/-intratechal-chemotherapy-treatment-through-an-ommaya-reservoir-catheter-for-meningeal-carcinomatosis-a-single-centre-experience
#1
José Pedro Lavrador, Nuno Simas, Edson Oliveira, Manuel Herculano Carvalho
INTRODUCTION: Meningeal carcinomatosis is defined as tumour cells infiltration of leptomeninges and subarachnoid space. It is normally related with poor survival (2 - 5 months). The best multidisciplinary treatment for this condition is a matter of discussion. Patient's condition and the natural history of the disease should be considered in the decision making process. MATERIAL AND METHODS: Retrospective cohort analysis of patients submitted to Ommaya Reservoir placement due to systemic solid tumour meningeal carcinomatosis between 2006 and 2014...
August 2016: Acta Médica Portuguesa
https://www.readbyqxmd.com/read/27914092/synthesis-characterization-and-study-of-in-vitro-cytotoxicity-of-zno-fe3o4-magnetic-composite-nanoparticles-in-human-breast-cancer-cell-line-mda-mb-231-and-mouse-fibroblast-nih-3t3
#2
Gunjan Bisht, Sagar Rayamajhi, Biplab Kc, Siddhi Nath Paudel, Deepak Karna, Bhupal G Shrestha
Novel magnetic composite nanoparticles (MCPs) were successfully synthesized by ex situ conjugation of synthesized ZnO nanoparticles (ZnO NPs) and Fe3O4 NPs using trisodium citrate as linker with an aim to retain key properties of both NPs viz. inherent selectivity towards cancerous cell and superparamagnetic nature, respectively, on a single system. Successful characterization of synthesized nanoparticles was done by XRD, TEM, FTIR, and VSM analyses. VSM analysis showed similar magnetic profile of thus obtained MCPs as that of naked Fe3O4 NPs with reduction in saturation magnetization to 16...
December 2016: Nanoscale Research Letters
https://www.readbyqxmd.com/read/27913902/a-new-multiscale-micromechanical-model-of-vertebral-trabecular-bones
#3
Rami Haj-Ali, Eyass Massarwa, Jacob Aboudi, Fabio Galbusera, Uwe Wolfram, Hans-Joachim Wilke
A new three-dimensional (3D) multiscale micromechanical model has been suggested as adept at predicting the overall linear anisotropic mechanical properties of a vertebral trabecular bone (VTB) highly porous microstructure. A nested 3D modeling analysis framework spanning the multiscale nature of the VTB is presented herein. This hierarchical analysis framework employs the following micromechanical methods: the 3D parametric high-fidelity generalized method of cells (HFGMC) as well as the 3D sublaminate model...
December 2, 2016: Biomechanics and Modeling in Mechanobiology
https://www.readbyqxmd.com/read/27913893/scleroderma-areolatum-ectomycorrhiza-on-fagus-sylvatica-l
#4
Tanja Mrak, Katja Kühdorf, Tine Grebenc, Ines Štraus, Babette Münzenberger, Hojka Kraigher
Despite its broad host range and distribution and its potential applications in commercial plantation forests, comprehensive descriptions of Scleroderma ectomycorrhizae are available only for Scleroderma citrinum, Scleroderma bovista and Scleroderma sinnamariense. This study provides a morphological and anatomical description of tree nursery derived ectomycorrhizae of Scleroderma areolatum on Fagus sylvatica, grown for several years in a climatized room. Ectomycorrhizae of S. areolatum were silvery white with abundant rhizomorphs; all mantle layers were plectenchymatous, rhizomorphs of type E, with prominent emanating hyphae with thick cell wall...
December 2, 2016: Mycorrhiza
https://www.readbyqxmd.com/read/27913741/aik1-a-mitogen-activated-protein-kinase-modulates-abscisic-acid-responses-through-the-mkk5-mpk6-kinase-cascade
#5
Kun Li, Fengbo Yang, Guozeng Zhang, Shufei Song, Yuan Li, Yuchen Miao, Dongtao Ren, Chun-Peng Song
The mitogen-activated protein kinase (MAPK) cascade is an evolutionarily conserved signal transduction module involved in transducing extracellular signals to the nucleus for appropriate cellular adjustment. This cascade essentially consists of three components, a MAPK kinase kinase (MAPKKK), a MAPK kinase (MAPKK) and a MAPK, connected to each other by the event of phosphorylation. Here we report the characterization of a MAPKKK, AIK1, which regulates abscisic acid (ABA) responses in Arabidopsis. T-DNA insertion mutants of AIK1 showed insensitivity to ABA in terms of both root growth and stomatal response...
December 2, 2016: Plant Physiology
https://www.readbyqxmd.com/read/27913206/mag-fluo4-in-t-cells-imaging-of-intra-organelle-free-ca-2-concentrations
#6
Björn-Philipp Diercks, Ralf Fliegert, Andreas H Guse
Ca(2+) signaling is a major signal transduction pathway involved in T cell activation, but also in apoptosis of T cells. Since T cells make use of several Ca(2+)-mobilizing second messengers, such as nicotinic acid adenine dinucleotide phosphate, d-myo-inositol 1,4,5-trisphosphate, and cyclic ADP-ribose, we intended to analyze luminal Ca(2+) concentration upon cell activation. Mag-Fluo4/AM, a low-affinity Ca(2+) dye known to localize to the endoplasmic reticular lumen in many cell types, showed superior brightness and bleaching stability, but, surprisingly, co-localized with mito-tracker, but not with ER-tracker in Jurkat T cells...
November 29, 2016: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/27912880/combination-of-baicalein-and-10-hydroxy-camptothecin-exerts-remarkable-synergetic-anti-cancer-effects
#7
Qin Tang, Fangling Ji, Wenhui Sun, Jingyun Wang, Jianli Guo, Lianying Guo, Yachen Li, Yongming Bao
BACKGROUND: 10-Hydroxy camptothecin (HCPT), a naturally occurring alkaloid, is a clinical drug for cancer chemotherapy. Baicalein (BA) is a flavonoid extracted from the root of Scutellaria baicalensis. The synergistic anti-cancer effect of BA and HCPT has not been reported. PURPOSE: To explore whether and how BA enhances the anti-cancer effect of HCPT in BGC823 cells. METHODS: Cell viability was measured by MTT assay. Apoptosis and cell cycle were analyzed through flow cytometry and western blotting analysis...
December 15, 2016: Phytomedicine: International Journal of Phytotherapy and Phytopharmacology
https://www.readbyqxmd.com/read/27912729/genomic-insights-from-whole-genome-sequencing-of-four-clonal-outbreak-campylobacter-jejuni-assessed-within-the-global-c-jejuni-population
#8
Clifford G Clark, Chrystal Berry, Matthew Walker, Aaron Petkau, Dillon O R Barker, Cai Guan, Aleisha Reimer, Eduardo N Taboada
BACKGROUND: Whole genome sequencing (WGS) is useful for determining clusters of human cases, investigating outbreaks, and defining the population genetics of bacteria. It also provides information about other aspects of bacterial biology, including classical typing results, virulence, and adaptive strategies of the organism. Cell culture invasion and protein expression patterns of four related multilocus sequence type 21 (ST21) C. jejuni isolates from a significant Canadian water-borne outbreak were previously associated with the presence of a CJIE1 prophage...
December 3, 2016: BMC Genomics
https://www.readbyqxmd.com/read/27911989/a-prospective-cohort-study-of-patients-with-peripheral-t-cell-lymphoma-in-the-united-states
#9
Steven M Horwitz, Lauren C Pinter-Brown, Steven T Rosen, Barbara Pro, Eric D Hsi, Massimo Federico, Christian Gisselbrecht, Marc Schwartz, Lisa A Bellm, Mark A Acosta, Andrei R Shustov, Ranjana H Advani, Tatyana A Feldman, Mary Jo Lechowicz, Sonali M Smith, Frederick Lansigan, Anil Tulpule, Michael D Craig, John P Greer, Brad S Kahl, Joseph W Leach, Neil Morganstein, Carla Casulo, Steven I Park, Francine M Foss
BACKGROUND: Long-term survival in patients with aggressive peripheral T-cell lymphoma (PTCL) is generally poor, and there currently is no clear consensus regarding the initial therapy used for these diseases. Herein, the authors analyzed treatment patterns and outcomes in a prospectively collected cohort of patients with a new diagnosis of nodal PTCL in the United States. METHODS: Comprehensive Oncology Measures for Peripheral T-cell Lymphoma Treatment (COMPLETE) is a prospective multicenter cohort study designed to identify the most common prevailing treatment patterns used for patients newly diagnosed with PTCL in the United States...
December 2, 2016: Cancer
https://www.readbyqxmd.com/read/27911898/bilaterian-giant-ankyrins-have-a-common-evolutionary-origin-and-play-a-conserved-role-in-patterning-the-axon-initial-segment
#10
Timothy Jegla, Michelle M Nguyen, Chengye Feng, Daniel J Goetschius, Esteban Luna, Damian B van Rossum, Bishoy Kamel, Aditya Pisupati, Elliott S Milner, Melissa M Rolls
In vertebrate neurons, the axon initial segment (AIS) is specialized for action potential initiation. It is organized by a giant 480 Kd variant of ankyrin G (AnkG) that serves as an anchor for ion channels and is required for a plasma membrane diffusion barrier that excludes somatodendritic proteins from the axon. An unusually long exon required to encode this 480Kd variant is thought to have been inserted only recently during vertebrate evolution, so the giant ankyrin-based AIS scaffold has been viewed as a vertebrate adaptation for fast, precise signaling...
December 2016: PLoS Genetics
https://www.readbyqxmd.com/read/27911848/global-analysis-of-genomic-instability-caused-by-dna-replication-stress-in-saccharomyces-cerevisiae
#11
Dao-Qiong Zheng, Ke Zhang, Xue-Chang Wu, Piotr A Mieczkowski, Thomas D Petes
DNA replication stress (DRS)-induced genomic instability is an important factor driving cancer development. To understand the mechanisms of DRS-associated genomic instability, we measured the rates of genomic alterations throughout the genome in a yeast strain with lowered expression of the replicative DNA polymerase δ. By a genetic test, we showed that most recombinogenic DNA lesions were introduced during S or G2 phase, presumably as a consequence of broken replication forks. We observed a high rate of chromosome loss, likely reflecting a reduced capacity of the low-polymerase strains to repair double-stranded DNA breaks (DSBs)...
November 28, 2016: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/27911821/myth4-ferm-myosins-have-an-ancient-and-conserved-role-in-filopod-formation
#12
Karl J Petersen, Holly V Goodson, Ashley L Arthur, G W Gant Luxton, Anne Houdusse, Margaret A Titus
The formation of filopodia in Metazoa and Amoebozoa requires the activity of myosin 10 (Myo10) in mammalian cells and of Dictyostelium unconventional myosin 7 (DdMyo7) in the social amoeba Dictyostelium However, the exact roles of these MyTH4-FERM myosins (myosin tail homology 4-band 4.1, ezrin, radixin, moesin; MF) in the initiation and elongation of filopodia are not well defined and may reflect conserved functions among phylogenetically diverse MF myosins. Phylogenetic analysis of MF myosin domains suggests that a single ancestral MF myosin existed with a structure similar to DdMyo7, which has two MF domains, and that subsequent duplications in the metazoan lineage produced its functional homolog Myo10...
November 23, 2016: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/27911274/high-expression-of-mucin13-associates-with-grimmer-postoperative-prognosis-of-patients-with-non-metastatic-clear-cell-renal-cell-carcinoma
#13
Zhiying Xu, Yidong Liu, Yuanfeng Yang, Jieti Wang, Guodong Zhang, Zheng Liu, Hangcheng Fu, Zewei Wang, Haiou Liu, Jiejie Xu
BACKGROUND: Mucin13 (MUC13) is a transmembrane glycoprotein that is aberrantly expressed in ovarian and gastro-intestinal tumors, but its role in renal cell carcinoma remains elusive. The purpose of this study is to evaluate the prognostic value of MUC13 expression in patients with non-metastatic clear cell renal cell carcinoma (ccRCC) after surgical resection. RESULTS: MUC13 high expression was associated with high Fuhrman grade (p < 0.001), high SSIGN score (p = 0...
November 29, 2016: Oncotarget
https://www.readbyqxmd.com/read/27911108/comparative-study-of-dual-pulsed-1-064-nm-q-switched-nd-yag-laser-and-single-pulsed-1-064-nm-q-switched-nd-yag-laser-by-using-zebrafish-model-and-prospective-split-face-analysis-of-facial-melasma
#14
Hee Won Jang, Seung Hyun Chun, Hae Chul Park, Hwa Jung Ryu, Il-Hwan Kim
BACKGROUND: Recently dual-pulsed low-fluence 1,064 nm Q-switched Nd:YAG (QSNY) laser has been developed for reducing complication during melasma treatment. OBJECTIVE: Comparison of the efficacy and safety between dual-pulsed mode and single-pulsed mode for the treatment of melasma. MATERIALS AND METHODS: In preclinical study, adult zebrafish were irradiated with dual-pulsed and single-pulsed mode. Changes of melanophore and cell death were assessed...
December 2, 2016: Journal of Cosmetic and Laser Therapy: Official Publication of the European Society for Laser Dermatology
https://www.readbyqxmd.com/read/27910021/quantitative-fluorescence-in-situ-hybridization-qfish
#15
Ivan Y Iourov
Fluorescence in situ hybridization (FISH) has a wide spectrum of applications in current molecular cytogenetic and cancer research. This is a unique technique that can be used for chromosomal DNA analysis in all cell types, at all stages of the cell cycle, and at molecular resolution. Recent developments in microscopy and imaging systems have allowed quantification of digital FISH images (quantitative FISH or QFISH) and have provided a new way for molecular cytogenetic analysis at single-cell level. QFISH can be applied for studying chromosome imbalances in interphase nuclei or metaphase spreads, measuring relative DNA content at chromosomal loci and identifying parental origin of homologous chromosomes...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/27910009/cancer-cytogenetics-an-introduction
#16
Thomas S K Wan
The Philadelphia chromosome was the first chromosomal abnormality discovered in cancer using the cytogenetics technique in 1960, and was consistently associated with chronic myeloid leukemia. Over the past five decades, innovative technical advances in the field of cancer cytogenetics have greatly enhanced the detection ability of chromosomal alterations, and have facilitated the research and diagnostic potential of chromosomal studies in neoplasms. These developments notwithstanding, chromosome analysis of a single cell is still the easiest way to delineate and understand the relationship between clonal evolution and disease progression of cancer cells...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/27909986/toxicity-and-pharmacokinetic-profile-for-single-dose-injection-of-aby-029-a-fluorescent-anti-egfr-synthetic-affibody-molecule-for-human-use
#17
Kimberley S Samkoe, Jason R Gunn, Kayla Marra, Sally M Hull, Karen L Moodie, Joachim Feldwisch, Theresa V Strong, Daniel R Draney, P Jack Hoopes, David W Roberts, Keith Paulsen, Brian W Pogue
PURPOSE: ABY-029, a synthetic Affibody peptide, Z03115-Cys, labeled with a near-infrared fluorophore, IRDye® 800CW, targeting epidermal growth factor receptor (EGFR) has been produced under good manufacturing practices for a US Food and Drug Administration-approved first-in-use human study during surgical resection of glioma, as well as other tumors. Here, the pharmacology, phototoxicity, receptor activity, and biodistribution studies of ABY-029 were completed in rats, prior to the intended human use...
December 1, 2016: Molecular Imaging and Biology: MIB: the Official Publication of the Academy of Molecular Imaging
https://www.readbyqxmd.com/read/27909922/production-of-biologically-active-recombinant-goose-fsh-in-a-single-chain-form-with-a-ctp-linker-sequence
#18
Hui Li, Huanxi Zhu, Qinming Qin, Mingming Lei, Zhendan Shi
FSH is a glycoprotein hormone secreted by the pituitary gland that is essential for gonadal development and reproductive function. In avian reproduction study, especially in avian reproduction hormone study, it is hindered by the lack of biologically active FSH. In order to overcome this shortcoming, we prepared recombinant goose FSH as a single chain molecule and tested its biological activities in the present study. Coding sequences for mature peptides of goose FSH α and β subunits were amplified from goose pituitary cDNA...
December 1, 2016: Molecular Biology Reports
https://www.readbyqxmd.com/read/27909780/interrogating-the-variation-of-element-masses-and-distribution-patterns-in-single-cells-using-icp-ms-with-a-high-efficiency-cell-introduction-system
#19
Hailong Wang, Meng Wang, Bing Wang, Lingna Zheng, Hanqing Chen, Zhifang Chai, Weiyue Feng
Cellular heterogeneity is an inherent condition of cell populations, which results from stochastic expression of genes, proteins, and metabolites. The heterogeneity of individual cells can dramatically influence cellular decision-making and cell fate. So far, our knowledge about how the variation of endogenous metals and non-metals in individual eukaryotic cells is limited. In this study, ICP-MS equipped with a high efficiency cell introduction system (HECIS) was developed as a method of single-cell ICP-MS (SC-ICP-MS)...
December 1, 2016: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/27909706/out-of-plane-integration-of-a-multimode-optical-fiber-for-single-particle-cell-detection-at-multiple-points-on-a-microfluidic-device-with-applications-to-particle-cell-counting-velocimetry-size-discrimination-and-the-analysis-of-single-cell-lysate-injections
#20
Jalal Sadeghi, Damith E W Patabadige, Anne H Culbertson, Hamid Latifi, Christopher T Culbertson
In this paper a single particle/cell-tracking microfluidic device that integrates an out-of-plane multimode optical fiber (OP-MMF) is reported. This OP-MMF is used to generate three excitation light-lines and three detection spots using only one excitation source and one detector. It takes advantage of an optical tunneling mode to create two excitation lines in a microfluidic channel emanating from a single fiber end. This method was used to accurately count particles/cells and perform velocity measurements and size discrimination...
December 2, 2016: Lab on a Chip
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