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https://www.readbyqxmd.com/read/28648742/polo-like-kinase-2-modulates-%C3%AE-synuclein-protein-levels-by-regulating-its-mrna-production
#1
Rikke H Kofoed, Jin Zheng, Nelson Ferreira, Søren Lykke-Andersen, Mauro Salvi, Cristine Betzer, Lasse Reimer, Torben Heick Jensen, Karina Fog, Poul H Jensen
Variations in the α-synuclein-encoding SNCA gene represent the greatest genetic risk factor for Parkinson's disease (PD), and duplications/triplications of SNCA cause autosomal dominant familial PD. These facts closely link brain levels of α-synuclein with the risk of PD, and make lowering α-synuclein levels a therapeutic strategy for the treatment of PD and related synucleinopathies. In this paper, we corroborate previous findings on the ability of overexpressed Polo-like kinase 2 (PLK-2) to decrease cellular α-synuclein, but demonstrate that the process is independent of PLK-2 phosphorylating S129 in α-synuclein because a similar reduction is achieved with the non-phosphorable S129A mutant α-synuclein...
June 22, 2017: Neurobiology of Disease
https://www.readbyqxmd.com/read/28646660/towards-understanding-transcriptional-networks-in-cellular-reprogramming
#2
REVIEW
Jaber Firas, Jose M Polo
Most of the knowledge we have on the molecular mechanisms of transcription factor mediated reprogramming comes from studies conducted in induced pluripotency. Recently however, a few studies investigated the mechanisms of cellular reprogramming in direct and indirect transdifferentiation, which allows us to explore whether shared parallel mechanisms can be drawn. Moreover, there are currently several computational tools that have been developed to predict and enhance the reprogramming process by reconstructing the transcriptional networks of reprogramming cells...
June 21, 2017: Current Opinion in Genetics & Development
https://www.readbyqxmd.com/read/28644915/mechanistic-insights-on-the-reduction-of-co2-to-silylformates-catalyzed-by-ir-nsin-species
#3
Luis A Oro, Alejandro Julián, Jefferson Guzmán, E A Jaseer, Francisco Fernández-Alvarez, Raquel Royo, Victor Polo, María Pilar García Orduña, Fernando Lahoz
The hydrosilylation of CO2 with different silanes such as HSiEt3, HSiMe2Ph, HSiMePh2, HSiMe(OSiMe3)2 and HSi(OSiMe3)3 in presence of catalytic ammounts of the iridium(III) complex [Ir(H)(CF3CO2)(NSiN*)(coe)] (1; NSiN* = fac-bis-(4-methylpyridine-2-yloxy); coe = cis-cyclooctene) has been comparatively studied. The activity of the hydrosilylation catalytic system based on 1 depends on the nature of the reducing agent, where HSiMe(OSiMe3)2 has proven to be the most active. The aforementioned reactions were found to be highly selective to the formation of the corresponding silylformate...
June 23, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/28639438/body-composition-analysis-to-study-long-term-training-effects-in-elite-male-water-polo-athletes
#4
Giovanni Melchiorri, Valerio Viero, Roberto Sorge, Tamara Triossi, Alessandro Campagna, Stella L Volpe, Dalgisio Lecis, Virginia Tancredi, Angela Andreoli
BACKGROUND: Elite water polo athletes undergo heavy training programs throughout the year, but especially to prepare major competitions, such as the Olympics. Optimal athletic performance is a result of many factors, including proper management of the intensity and volume of training, nutrition and recovery between training sessions. When training is excessive in relation to recovery may occur non functional overreaching (NFO). NFO can degenerate into overtraining syndrome (OTS) resulting in a decrease in athletic performance, with likely changes in body weight and body composition...
June 21, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28638459/towards-prognostic-profiling-of-non-small-cell-lung-cancer-new-perspectives-on-the-relevance-of-polo-like-kinase-1-expression-the-tp53-mutation-status-and-hypoxia
#5
Jolien Van den Bossche, Christophe Deben, Ken Op de Beeck, Vanessa Deschoolmeester, Christophe Hermans, Ines De Pauw, Julie Jacobs, Paul Van Schil, Jan Baptist Vermorken, Patrick Pauwels, Marc Peeters, Filip Lardon, An Wouters
Background: Currently, prognosis of non-small cell lung cancer (NSCLC) patients is based on clinicopathological factors, including TNM stage. However, there are considerable differences in patient outcome within a similar staging group, even when patients received identical treatments. In order to improve prognostic predictions and to guide treatment options, additional parameters influencing outcome are required. Polo-like kinase 1 (Plk1), a master regulator of mitotic cell division and the DNA damage response, is considered as a new potential biomarker in this research area...
2017: Journal of Cancer
https://www.readbyqxmd.com/read/28636790/controlling-reaction-selectivity-via-surface-termination-of-perovskite-catalysts
#6
Felipe Polo-Garzon, Shi-Ze Yang, Victor Fung, Guo Shiou Foo, Elizabeth Erin Bickel, Matthew F Chisholm, De-En Jiang, Zili Wu
Although perovskites have been widely used in catalysis, tuning their surface terminations to control reaction selectivities has not been well established. In this work, we employ multiple surface sensitive techniques to characterize the surface termination (one aspect of surface reconstruction) of SrTiO3 (STO) after thermal pretreatment (Sr-enrichment) and chemical etching (Ti-enrichment). We show, using the conversion of 2-propanol as a probe reaction, that the surface termination of STO can be controlled to greatly tune catalytic acid/base properties and consequently the reaction selectivities in a wide range, which are inaccessible using single metal oxides, either SrO or TiO2...
June 21, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28631179/population-pharmacokinetics-of-volasertib-administered-in-patients-with-acute-myeloid-leukaemia-as-a-single-agent-or-in-combination-with-cytarabine
#7
Belén P Solans, Angèle Fleury, Matthias Freiwald, Holger Fritsch, Karin Haug, Iñaki F Trocóniz
BACKGROUND: Volasertib, a potent and selective polo-like kinase inhibitor, has shown to increase response rates and improve survival with a clinically manageable safety profile, administered alone and in combination with cytarabine in patients with acute myeloid leukaemia. OBJECTIVES: The objectives of this analysis were to describe the pharmacokinetics of volasertib and cytarabine, administered as single agents or in combination. METHODS: Three thousand, six hundred and six plasma volasertib concentrations from 501 patients receiving either volasertib alone, or in combination with cytarabine, and 826 plasma cytarabine concentrations from 650 patients receiving cytarabine as multiple subcutaneous injections per cycle either alone, or in combination with volasertib, were analysed using NONMEM Version 7...
June 19, 2017: Clinical Pharmacokinetics
https://www.readbyqxmd.com/read/28631129/optimizing-the-deep-brain-stimulation-care-pathway-in-patients-with-parkinson-s-disease
#8
N J Thomas, P Mertens, T Danaila, G Polo, H Klinger, E Broussolle, S Thobois
Management of Parkinson's disease (PD) using deep brain stimulation (DBS) requires complex care in specialized, multidisciplinary centers. A well-organized, efficient patient flow is crucial to ensure that eligible patients can quickly access DBS. Delays or inefficiencies in patient care may impact a center's ability to meet demand, creating a capacity bottleneck. Analysis of the current practices within a center may help identify areas for improvement. After external audit of the DBS workflow of the Lyon Neurological Hospital and comparison with other European centers, manageable steps were suggested to restructure the care pathway...
June 19, 2017: Journal of Neurology
https://www.readbyqxmd.com/read/28628916/comprehensive-biomarker-analyses-in-patients-with-advanced-or-metastatic-non-small-cell-lung-cancer-prospectively-treated-with-the-polo-like-kinase-1-inhibitor-bi2536
#9
Frank Breitenbuecher, Joachim von Pawel, Martin Sebastian, Cornelius Kortsik, Saskia Ting, Stefan Kasper, Jeremias Wohlschläger, Karl Worm, Alicia Morresi-Hauf, Arno Schad, Daniela Westerwick, Beatrice Wehler, Martin Werner, Gerd Munzert, Birgit Gaschler-Markefski, Kurt W Schmid, Martin Schuler
No abstract text is available yet for this article.
June 20, 2017: Oncology Research and Treatment
https://www.readbyqxmd.com/read/28624313/eplerenone-a-new-treatment-for-an-old-problem-retinitis-pigmentosa-with-recalcitrant-macular-edema
#10
R Campos Polo, C Rubio Sánchez, D M García Guisado, M J Díaz Luque
CASE REPORT: The case involves a 35-year-old man, with a history of retinitis pigmentosa, who presented with a bilateral cystoid macular oedema associated with bilateral epiretinal membrane, which was resistant to treatment with oral acetazolamide and intravitreal bevacizumab. The treatment with oral eplerenone was able to improve the visual acuity and macular thickness of this patient. DISCUSSION: A variety of treatments have been proposed for the management of cystoid macular oedema, associated with retinitis pigmentosa, with variable results...
June 14, 2017: Archivos de la Sociedad Española de Oftalmología
https://www.readbyqxmd.com/read/28615531/environment-and-bladder-cancer-molecular-analysis-by-interaction-networks
#11
Andrea Polo, Anna Crispo, Pellegrino Cerino, Luca Falzone, Saverio Candido, Aldo Giudice, Giuseppina De Petro, Gennaro Ciliberto, Maurizio Montella, Alfredo Budillon, Susan Costantini
Bladder cancer (BC) is the 9th most common cancer worldwide, and the 6th most common cancer in men. Its development is linked to chronic inflammation, genetic susceptibility, smoking, occupational exposures and environmental pollutants. Aim of this work was to identify a sub-network of genes/proteins modulated by environmental or arsenic exposure in BC by computational network approaches. Our studies evidenced the presence of HUB nodes both in "BC and environment" and "BC and arsenicals" networks. These HUB nodes resulted to be correlated to circadian genes and targeted by some miRNAs already reported as involved in BC, thus suggesting how they play an important role in BC development due to environmental or arsenic exposure...
May 26, 2017: Oncotarget
https://www.readbyqxmd.com/read/28610768/intracranial-subarachnoid-fat-and-hemorrhage-secondary-to-sacral-fracture-with-spondylopelvic-dissociation
#12
J Carreres Polo, M V Álvarez Martínez, D Sánchez Mateos
We describe a case of fat droplets and blood in the cerebral subarachnoid space secondary in a patient with a complex sacral fracture without associated cranial trauma, a few days after admission. To our knowledge, there is only one published case with similar findings and without any other underlying lesion as cause. We explain the differences in the mechanism of production between this direct fat embolism and brain fat embolism syndrome, which is an intravascular embolism with different radiological appearance...
June 10, 2017: Radiología
https://www.readbyqxmd.com/read/28607419/two-step-atp-driven-opening-of-cohesin-head
#13
Íñigo Marcos-Alcalde, Jesús I Mendieta-Moreno, Beatriz Puisac, María Concepción Gil-Rodríguez, María Hernández-Marcos, Diego Soler-Polo, Feliciano J Ramos, José Ortega, Juan Pié, Jesús Mendieta, Paulino Gómez-Puertas
The cohesin ring is a protein complex composed of four core subunits: Smc1A, Smc3, Rad21 and Stag1/2. It is involved in chromosome segregation, DNA repair, chromatin organization and transcription regulation. Opening of the ring occurs at the "head" structure, formed of the ATPase domains of Smc1A and Smc3 and Rad21. We investigate the mechanisms of the cohesin ring opening using techniques of free molecular dynamics (MD), steered MD and quantum mechanics/molecular mechanics MD (QM/MM MD). The study allows the thorough analysis of the opening events at the atomic scale: i) ATP hydrolysis at the Smc1A site, evaluating the role of the carboxy-terminal domain of Rad21 in the process; ii) the activation of the Smc3 site potentially mediated by the movement of specific amino acids; and iii) opening of the head domains after the two ATP hydrolysis events...
June 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28596750/self-concept-in-childhood-the-role-of-body-image-and-sport-practice
#14
Santiago Mendo-Lázaro, María I Polo-Del-Río, Diana Amado-Alonso, Damián Iglesias-Gallego, Benito León-Del-Barco
The purpose of this study was to explore the differences in satisfaction with body image depending on whether the subject practices organized sport or not, as well as the gender of the children. In addition, the study aims to examine the role of body image and the practice of organized sport on the process of building the academic, social, emotional, family and physical dimensions of self-concept in childhood. To do so, a sample of 944 pupils was used. These children were attending primary school in different centers of the Autonomous Community of Extremadura (Spain) and were between 9 and 12 years of age...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28595664/spanish-language-adaptation-of-morgeson-and-humphrey-s-work-design-questionnaire-wdq
#15
Manuel Fernández Ríos, Raúl G Ramírez Vielma, José Carlos Sánchez García, Mariana Bargsted Aravena, Jean David Polo Vargas, Miguel Ángel Ruiz Díaz
Since work organizations became the subject of scientific research, how to operationalize and measure dimensions of work design has been an issue, mainly due to concerns about internal consistency and factor structure. In response, Morgeson and Humphrey (2006) built the Work Design Questionnaire -WDQ-, an instrument that identifies and measures these dimensions in different work and organizational contexts. This paper presents the instruent's adaptation into Spanish using reliability and validity analysis and drawing on a sample of 1035 Spanish workers who hold various jobs in an array of occupational categories...
June 9, 2017: Spanish Journal of Psychology
https://www.readbyqxmd.com/read/28591578/plk1-activation-in-late-g2-sets-up-commitment-to-mitosis
#16
Lilia Gheghiani, Damarys Loew, Bérangère Lombard, Jörg Mansfeld, Olivier Gavet
Commitment to mitosis must be tightly coordinated with DNA replication to preserve genome integrity. While we have previously established that the timely activation of CyclinB1-Cdk1 in late G2 triggers mitotic entry, the upstream regulatory mechanisms remain unclear. Here, we report that Polo-like kinase 1 (Plk1) is required for entry into mitosis during an unperturbed cell cycle and is rapidly activated shortly before CyclinB1-Cdk1. We determine that Plk1 associates with the Cdc25C1 phosphatase and induces its phosphorylation before mitotic entry...
June 6, 2017: Cell Reports
https://www.readbyqxmd.com/read/28585791/-pediatric-traumatic-brain-injury-due-to-civil-gunshot-wounds-at-a-general-hospital-in-cali-colombia
#17
L Parrado Sánchez, C Gómez, J A Valderrama Chaparro, L D Beltrán Osorio, M Sierra Ruiz, A Enríquez Marulanda, J Lobato Polo
OBJECTIVES: Traumatic brain injury (TBI) due to gunshot-wounds (GSW) is a critical situation in the pediatric population. The aim of this study is to characterize TBI in this population since there are few reports that describe it especially in Colombia where its incidence is high, also to determine which were the main mortality predictor within our population. MATERIAL AND METHODS: We conducted a retrospective cross-sectional study in which we reviewed pediatric medical records of patients that had consulted at the Fundacion Valle del Lili pediatric Emergency Room between January of 2011 and December of 2015 because of TBI due to GSW...
January 25, 2017: Cirugía Pediátrica: Organo Oficial de la Sociedad Española de Cirugía Pediátrica
https://www.readbyqxmd.com/read/28582429/transmission-dynamics-and-control-of-rickettsia-rickettsii-in-populations-of-hydrochoerus-hydrochaeris-and-amblyomma-sculptum
#18
Gina Polo, Carlos Mera Acosta, Marcelo B Labruna, Fernando Ferreira
BACKGROUND: Brazilian Spotted Fever (BSF), caused by the bacterium Rickettsia rickettsii, is the tick-borne disease that generates the largest number of human deaths in the world. In Brazil, the current increase of BSF human cases has been associated with the presence and expansion of capybaras Hydrochoerus hydrochaeris, which act as primary hosts for the tick Amblyomma sculptum, vector of the R. rickettsii in this area. METHODS: We proposed a semi-discrete-time stochastic model to evaluate the role of capybaras in the transmission dynamics of R...
June 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28579014/executive-summary-of-the-consensus-document-on-osteoporosis-in-hiv-infected-individuals
#19
Eugenia Negredo, Pere Domingo, Félix Gutiérrez, María José Galindo, Hernando Knobel, Fernando Lozano, Esteban Martínez, Mar Masiá, Rosa Polo, Vicente Estrada
Osteoporosis has become an emerging comorbid condition in people living with HIV (PLWH). The increase in survival and the progressive aging of PLWH will make this complication more frequent in the near future. In addition to the traditional risk factors affecting the general population, factors directly or indirectly associated with HIV infection, including antiretroviral therapy, can increase the risk of osteoporosis. The present article is an executive summary of the document that updates the previous recommendations on the prevention and treatment of osteoporosis in PLWH...
May 31, 2017: Enfermedades Infecciosas y Microbiología Clínica
https://www.readbyqxmd.com/read/28575857/targeting-plk1-as-a-novel-chemopreventive-approach-to-eradicate-preneoplastic-mucosal-changes-in-the-head-and-neck
#20
D Vicky de Boer, Sanne R Martens-de Kemp, Marijke Buijze, Marijke Stigter-van Walsum, Elisabeth Bloemena, Ralf Dietrich, C René Leemans, Victor W van Beusechem, Boudewijn J M Braakhuis, Ruud H Brakenhoff
Head and neck squamous cell carcinomas (HNSCC) and local relapses thereof develop in preneoplastic fields in the mucosal linings of the upper aerodigestive tract. These fields are characterized by tumor-associated genetic changes, are frequently dysplastic and occasionally macroscopically visible. Currently, no adequate treatment options exist to prevent tumor development. Array-based screening with a panel of tumor-lethal small interfering RNAs (siRNAs) identified Polo-like kinase 1 (PLK1) as essential for survival of preneoplastic cells...
May 16, 2017: Oncotarget
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