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https://www.readbyqxmd.com/read/28101224/impact-of-chromosome-17q-deletion-in-the-primary-lesion-of-colorectal-cancer-on-liver-metastasis
#1
Masaya Kawai, Hiromitsu Komiyama, Masaki Hosoya, Haruna Okubo, Tomoaki Fujii, Norihiko Yokoyama, Chiyo Sato, Takae Ueyama, Atsushi Okuzawa, Michitoshi Goto, Yutaka Kojima, Makoto Takahashi, Kiichi Sugimoto, Shun Ishiyama, Shinya Munakata, Dai Ogura, Shin-Ichiro Niwa, Yuichi Tomiki, Takumi Ochiai, Kazuhiro Sakamoto
Colorectal cancer is a prevalent malignancy worldwide, and investigations are required to elucidate the underlying carcinogenic mechanisms. Amongst these mechanisms, de novo carcinogenesis and the adenoma to carcinoma sequence, are the most understood. Metastasis of colorectal cancer to the liver often results in fatality, therefore, it is important for any associated risk factors to be identified. Regarding the treatment of the disease, it is important to manage not only the primary colorectal tumor, but also the liver metastases...
December 2016: Oncology Letters
https://www.readbyqxmd.com/read/28077435/blu-285-dcc-2618-show-activity-against-gist
#2
(no author information available yet)
Tyrosine kinase inhibitors may initially control gastrointestinal stromal tumors, but most patients eventually experience disease progression due to activation loop mutations, which are resistant to approved drugs. However, phase I trials suggest that the cancer is sensitive to two new agents: BLU-285 and DCC-2618. In addition, liquid biopsies, which were used to follow patients during the trials, may be valuable tools in tracking disease progression and assessing tumor heterogeneity.
January 11, 2017: Cancer Discovery
https://www.readbyqxmd.com/read/28068852/maternal-outcomes-following-the-initiation-of-an-institutional-delayed-cord-clamping-protocol-an-observational-case-control-study
#3
Kelly Kuo, Priyanka Gohale, David N Hackney, Chayatat Ruangkit, Monika Bhola, Melissa I March
OBJECTIVE: To evaluate maternal outcomes before and after implementation of an institutional delayed cord clamping (DCC) protocol. STUDY DESIGN: We performed a secondary analysis of a retrospective cohort study of deliveries occurring at <34 weeks at a tertiary care center in 2013-2014. 139 women who underwent early cord clamping were compared to 130 women delivered after DCC protocol implementation. Maternal estimated blood loss (EBL) was the primary outcome of interest...
January 9, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28068334/two-paralogous-tetraspanins-tsp-12-and-tsp-14-function-with-the-adam10-metalloprotease-sup-17-to-promote-bmp-signaling-in-caenorhabditis-elegans
#4
Lin Wang, Zhiyu Liu, Herong Shi, Jun Liu
The highly conserved bone morphogenetic protein (BMP) signaling pathway regulates many developmental and homeostatic processes. While the core components of the BMP pathway have been well studied, much research is needed for understanding the mechanisms involved in the precise spatiotemporal control of BMP signaling in vivo. Here, we provide evidence that two paralogous and evolutionarily conserved tetraspanins, TSP-12 and TSP-14, function redundantly to promote BMP signaling in C. elegans. We further show that the ADAM10 (a disintegrin and metalloprotease 10) ortholog SUP-17 also functions to promote BMP signaling, and that TSP-12 can bind to and promote the cell surface localization of SUP-17...
January 9, 2017: PLoS Genetics
https://www.readbyqxmd.com/read/28057929/a-novel-role-for-the-dna-repair-gene-rad51-in-netrin-1-signalling
#5
K A Glendining, D Markie, R J M Gardner, E A Franz, S P Robertson, C L Jasoni
Mutations in RAD51 have recently been linked to human Congenital Mirror Movements (CMM), a developmental disorder of the motor system. The only gene previously linked to CMM encodes the Netrin-1 receptor DCC, which is important for formation of corticospinal and callosal axon tracts. Thus, we hypothesised that Rad51 has a novel role in Netrin-1-mediated axon development. In mouse primary motor cortex neurons, Rad51 protein was redistributed distally down the axon in response to Netrin-1, further suggesting a functional link between the two...
January 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28056843/the-influence-of-day-care-centres-designed-for-people-with-dementia-on-family-caregivers-a-qualitative-study
#6
Signe Tretteteig, Solfrid Vatne, Anne Marie Mork Rokstad
BACKGROUND: Dementia is one of the most challenging age-related illnesses for family caregivers, whose care-related burden is well known. Research indicates that day care centres (DCCs) can reduce the caregiver burden and help family caregivers to cope with demands; however, the current body of knowledge is still tentative and inconsistent, and more research is recommended. The aim of this study is to provide an extended understanding of the situation of family caregivers and to examine to what extent DCCs can meet their need for support and respite...
January 5, 2017: BMC Geriatrics
https://www.readbyqxmd.com/read/28054144/aerobic-fitness-impacts-sympathoadrenal-axis-responses-to-concurrent-challenges
#7
Heather E Webb, Deena A Rosalky, Matthew J McAllister, Edmund O Acevedo, Gary H Kamimori
: The combination of mental and physical challenges can elicit exacerbated cardiorespiratory (CR) and catecholamine responses above that of a single challenge alone. PURPOSE: This study examined the effects of a combination of acute mental challenges and physical stress on cardiorespiratory and catecholamine responses. METHOD: Eight below-average fitness (LF VO2max = 36.58 ± 3.36 ml(-1) kg(-1) min(-1)) and eight above-average fitness (HF VO2max = 51...
January 4, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28052247/sema-1a-reverse-signaling-promotes-midline-crossing-in-response-to-secreted-semaphorins
#8
Melissa Hernandez-Fleming, Ethan W Rohrbach, Greg J Bashaw
Commissural axons must cross the midline to form functional midline circuits. In the invertebrate nerve cord and vertebrate spinal cord, midline crossing is mediated in part by Netrin-dependent chemoattraction. Loss of crossing, however, is incomplete in mutants for Netrin or its receptor Frazzled/DCC, suggesting the existence of additional pathways. We identified the transmembrane Semaphorin, Sema-1a, as an important regulator of midline crossing in the Drosophila CNS. We show that in response to the secreted Semaphorins Sema-2a and Sema-2b, Sema-1a functions as a receptor to promote crossing independently of Netrin...
January 3, 2017: Cell Reports
https://www.readbyqxmd.com/read/28049617/synthesis-of-antimicrobial-glucosamides-as-bacterial-quorum-sensing-mechanism-inhibitors
#9
Nripendra N Biswas, Tsz Tin Yu, Önder Kimyon, Shashidhar Nizalapur, Christopher R Gardner, Mike Manefield, Renate Griffith, David StC Black, Naresh Kumar
Bacteria communicate with one another and regulate their pathogenicity through a phenomenon known as quorum sensing (QS). When the bacterial colony reaches a threshold density, the QS system induces the production of virulence factors and the formation of biofilms, a powerful defence system against the host's immune responses. The glucosamine monomer has been shown to disrupt the bacterial QS system by inhibiting autoinducer (AI) signalling molecules such as the acyl-homoserine lactones (AHLs). In this study, the synthesis of acetoxy-glucosamides 8, hydroxy-glucosamides 9 and 3-oxo-glucosamides 12 was performed via the 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride (EDC·HCl) and N,N'-dicyclohexylcarbodiimide (DCC) coupling methods...
December 21, 2016: Bioorganic & Medicinal Chemistry
https://www.readbyqxmd.com/read/28033683/snare-proteins-play-a-role-in-motor-axon-guidance-in-vertebrates-and-invertebrates
#10
Pablo José Barrecheguren, Oriol Ros, Tiziana Cotrufo, Beat Kunz, Eduardo Soriano, Fausto Ulloa, Esther T Stoeckli, Sofia J Araújo
Axonal growth and guidance rely on correct growth cone responses to guidance cues, both in the central nervous system (CNS) and in the periphery. Unlike the signaling cascades that link axonal growth to cytoskeletal dynamics, little is known about the crosstalk mechanisms between guidance and membrane dynamics and turnover in the axon. Our studies have shown that Netrin-1/Deleted in Colorectal Cancer (DCC) signaling triggers exocytosis through the SNARE Syntaxin-1 (STX-1) during the formation of commissural pathways...
December 29, 2016: Developmental Neurobiology
https://www.readbyqxmd.com/read/28006840/copy-number-variations-in-dcc-18q-and-erbb2-17q-are-associated-with-disease-free-survival-in-microsatellite-stable-colon-cancer
#11
David Sefrioui, Thomas Vermeulin, France Blanchard, Caroline Chapusot, Ludivine Beaussire, Laura Armengol-Debeir, Richard Sesboué, Alice Gangloff, Mohamed Hebbar, Marie-Christine Copin, Estelle Houivet, Lilian Schwarz, Florian Clatot, Jean-Jacques Tuech, Jacques Bénichou, Laurent Martin, Anne-Marie Bouvier, Jean-Christophe Sabourin, Nasrin Sarafan-Vasseur, Thierry Frébourg, Côme Lepage, Pierre Michel, Frédéric Di Fiore
We conducted a prospective study to assess the prognostic impact of selected copy number variations (CNVs) in stage II-III microsatellite stable (MSS) colon cancer. A total of 401 patients were included from 01/2004 to 01/2009. The CNVs in 8 selected target genes, DCC/18q, EGFR/7p, TP53/17p, BLK/8p, MYC/8q, APC/5q, ERBB2/17q, and STK6/20q, were detected using a quantitative multiplex polymerase chain reaction of short fluorescent fragment (QMPSF) method. The primary end-point was the impact of the CNVs on the 4-year disease-free survival (DFS)...
December 22, 2016: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/28005380/hyaluronic-acid-hydroxyapatite-colloidal-gels-combined-with-micronized-native-ecm-as-potential-bone-defect-fillers
#12
S Connor Dennis, Jonathan Whitlow, Michael S Detamore, Sarah L Kieweg, Cory J Berkland
One of the grand challenges in translational regenerative medicine is the surgical placement of biomaterials. For bone regeneration in particular, malleable and injectable colloidal gelsare frequently designed to exhibit self-assembling and shear-response behavior which facilitates biomaterial placement in tissue defects. The current study demonstrated that by combining native extracellular matrix (ECM) microparticles, i.e., demineralized bone matrix (DBM) and decellularized cartilage (DCC), with hyaluronic acid (HA) and hydroxyapatite (HAP) nanoparticles, a viscoelastic colloidal gel consisting exclusively of natural materials was achieved...
December 22, 2016: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28004124/attenuation-of-neointimal-formation-with-netrin-1-and-netrin-1-preconditioned-endothelial-progenitor-cells
#13
Norika Mengchia Liu, Kin Lung Siu, Ji Youn Youn, Hua Cai
: Restenosis after angioplasty is a serious clinical problem that can result in re-occlusion of the coronary artery. Although current drug-eluting stents have proved to be more effective in reducing restenosis, they have drawbacks of inhibiting reendothelialization to promote thrombosis. New treatment options are in urgent need. We have shown that netrin-1, an axon-guiding protein, promotes angiogenesis and cardioprotection via production of nitric oxide (NO). The present study examined whether and how netrin-1 attenuates neointimal formation in a femoral wire injury model...
December 21, 2016: Journal of Molecular Medicine: Official Organ of the "Gesellschaft Deutscher Naturforscher und Ärzte"
https://www.readbyqxmd.com/read/27966913/functional-characterization-of-a-novel-amidase-involved-in-biotransformation-of-triclocarban-and-its-dehalogenated-congeners-in-ochrobactrum-sp-tcc-2
#14
Hui Yun, Bin Liang, Jiguo Qiu, Long Zhang, Youkang Zhao, Jiandong Jiang, Aijie Wang
Haloaromatic antimicrobial triclocarban (3,4,4'-trichlorocarbanilide, TCC) is a refractory contaminant which is frequently detected in various aquatic and sediment environments globally. However, few TCC-degrading communities or pure cultures have been documented, and functional enzymes involved in TCC biodegradation hitherto have not yet been characterized. In this study, a bacterial strain, Ochrobactrum sp. TCC-2, capable of degrading TCC under both aerobic and anaerobic conditions was isolated from a sediment sample...
January 3, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/27955617/planar-cell-polarity-genes-frizzled3a-vangl2-and-scribble-are-required-for-spinal-commissural-axon-guidance
#15
Simon D Sun, Ashley M Purdy, Gregory S Walsh
BACKGROUND: A fundamental feature of early nervous system development is the guidance of axonal projections to their targets in order to assemble neural circuits that control behavior. Spinal commissural neurons are an attractive model to investigate the multiple guidance cues that control growth cone navigation both pre- and post-midline crossing, as well as along both the dorsal-ventral (D-V) and anterior-posterior (A-P) axes. Accumulating evidence suggests that guidance of spinal commissural axons along the A-P axis is dependent on components of the planar cell polarity (PCP) signaling pathway...
December 12, 2016: BMC Neuroscience
https://www.readbyqxmd.com/read/27939705/embryonic-axon-guidance-insights-from-drosophila-and-other-insects
#16
REVIEW
Timothy A Evans
During embryonic development, growing axons are guided by cellular signaling pathways that control a series of individual axon guidance decisions. In Drosophila, two major pathways (Netrin-Frazzled/DCC and Slit-Robo) regulate axon guidance in the embryonic ventral nerve cord, including the critical decision of whether or not to cross the midline. Studies in the fruit fly have revealed a complex picture of precise regulation and cross-talk between these pathways. In addition, Robo receptors in Drosophila have diversified their activities to regulate additional axon guidance decisions in the developing embryo...
December 2016: Current Opinion in Insect Science
https://www.readbyqxmd.com/read/27939259/oxygen-saturation-and-heart-rate-ranges-in-very-preterm-infants-requiring-respiratory-support-at-birth
#17
Emily Phillipos, Anne Lee Solevåg, Khalid Aziz, Sylvia van Os, Gerhard Pichler, Megan O'Reilly, Po-Yin Cheung, Georg M Schmölzer
OBJECTIVE: To evaluate the changes in preductal oxygen saturation (SpO2) and heart rate in preterm infants receiving continuous positive airway pressure (CPAP) and/or positive-pressure ventilation (PPV) at birth. STUDY DESIGN: A prospective observational study at birth of infants aged <32 weeks separated into 2 gestational age (GA) groups: 23(0/7)-27(6/7) weeks (group 1) and 28(0/7)-31(6/7) weeks (group 2). Infants received delayed cord clamping (DCC) in accordance with institutional protocol...
December 6, 2016: Journal of Pediatrics
https://www.readbyqxmd.com/read/27936996/a-review-of-benefits-of-cord-milking-over-delayed-cord-clamping-in-the-preterm-infant-and-future-directions-of-research
#18
Azif Safarulla
PURPOSE OF REVIEW: The recommended method of handling the umbilical cord has undergone a complete 360 degree turn over the years and current knowledge and research has led the direction to delayed clamping and cord milking. This practice has also been supported by American College of Obstetrics and Gynecology [ACOG] in 2012. This review is a summary of current evidence on delayed cord clamping [DCC], umbilical cord milking [UCM], and comparison between the two and future directions. RECENT FINDINGS: Multiple studies have been published establishing the safety of umbilical cord milking...
December 11, 2016: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/27929530/effects-of-delayed-cord-clamping-on-residual-placental-blood-volume-hemoglobin-and-bilirubin-levels-in-term-infants-a-randomized-controlled-trial
#19
J S Mercer, D A Erickson-Owens, J Collins, M O Barcelos, A B Parker, J F Padbury
OBJECTIVE: The objective of the study was to measure the effects of a 5-min delay (DCC) versus immediate cord clamping (ICC) on residual placental blood volume (RPBV) at birth, and hemoglobin and serum bilirubin at 24 to 48 h of age. STUDY DESIGN: In this prospective randomized controlled trial, 73 women with term (37 to 41 weeks) singleton fetuses were randomized to DCC (⩾5 min; n=37) or ICC (<20 s; n=36). RESULTS: Maternal and infant demographics were not different between the groups...
December 8, 2016: Journal of Perinatology: Official Journal of the California Perinatal Association
https://www.readbyqxmd.com/read/27928953/novel-hybrid-molecules-on-the-basis-of-steroids-and-5z-9z-tetradeca-5-9-dienoic-acid-synthesis-anti-cancer-studies-and-human-topoisomerase-i-inhibitory-activity
#20
Vladimir A D Yakonov, Lilya U Dzhemileva, Regina A Tuktarova, Svetlana R Ishmukhametova, Milyausha M Yunusbaeva, Ilfir R Ramazanova, Usein M Dzhemilev
Novel steroid derivatives of 5Z,9Z-dienoic acids were prepared by the DCC/DMAP-catalyzed esterification of (5Z,9Z)-tetradeca-5,9-dienoic acid with hydroxy steroids. High cytotoxicity towards the HEK293, Jurkat, K562 cancer cell lines and human topoisomerase I (hTop1) inhibitory activity in vitro were found for the synthesized acids. A probable mechanism of topoisomerase I inhibition was hypothesized on the basis of in silico studies resorting to docking.
December 7, 2016: Anti-cancer Agents in Medicinal Chemistry
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