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https://www.readbyqxmd.com/read/28103471/new-light-on-gamma-oscillations
#1
Cristin G Welle, Diego Contreras
Two papers in this issue of Neuron by Saleem et al. (2017) and Storchi et al. (2017) show that increases in background light intensity trigger proportional increases in narrowband gamma oscillations with a peak at 60 Hz in retina, lateral geniculate, and primary visual cortex of the mouse visual system.
January 18, 2017: Neuron
https://www.readbyqxmd.com/read/28102844/human-adipose-stem-cell-differentiation-is-highly-affected-by-cancer-cells-both-in-vitro-and-in-vivo-implication-for-autologous-fat-grafting
#2
Francesca Paino, Marcella La Noce, Diego Di Nucci, Giovanni Francesco Nicoletti, Rosa Salzillo, Alfredo De Rosa, Giuseppe Andrea Ferraro, Gianpaolo Papaccio, Vincenzo Desiderio, Virginia Tirino
Recent studies showed that mesenchymal stem cells derived from adipose tissue can promote tumour progression, raising some concerns regarding their use in regenerative medicine. In this context, we co-cultured either SAOS2 osteosarcoma or MCF7 breast cancer cells with human adipose stem cells (hASCs), in order to evaluate potential effects of cancer cells on hASCs differentiation, in vitro and in vivo. In this study we observed that both SAOS2 and MCF7 cell lines induced an increase in hASCs proliferation, compared to hASCs alone, but, surprisingly, neither changes in the expression of CD90, CD29, CD324 and vimentin, nor variations in the Twist and Slug mRNAs were detectable...
January 19, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28102353/cofilin-regulates-nuclear-architecture-through-a-myosin-ii-dependent-mechanotransduction-module
#3
O'Neil Wiggan, Bryce Schroder, Diego Krapf, James R Bamburg, Jennifer G DeLuca
Structural features of the nucleus including shape, size and deformability impact its function affecting normal cellular processes such as cell differentiation and pathological conditions such as tumor cell migration. Despite the fact that abnormal nuclear morphology has long been a defining characteristic for diseases such as cancer relatively little is known about the mechanisms that control normal nuclear architecture. Mounting evidence suggests close coupling between F-actin cytoskeletal organization and nuclear morphology however, mechanisms regulating this coupling are lacking...
January 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28102192/the-impact-of-micrornas-on-transcriptional-heterogeneity-and-gene-co-expression-across-single-embryonic-stem-cells
#4
Gennaro Gambardella, Annamaria Carissimo, Amy Chen, Luisa Cutillo, Tomasz J Nowakowski, Diego di Bernardo, Robert Blelloch
MicroRNAs act posttranscriptionally to suppress multiple target genes within a cell population. To what extent this multi-target suppression occurs in individual cells and how it impacts transcriptional heterogeneity and gene co-expression remains unknown. Here we used single-cell sequencing combined with introduction of individual microRNAs. miR-294 and let-7c were introduced into otherwise microRNA-deficient Dgcr8 knockout mouse embryonic stem cells. Both microRNAs induce suppression and correlated expression of their respective gene targets...
January 19, 2017: Nature Communications
https://www.readbyqxmd.com/read/28101519/delayed-tacrolimus-leukoencephalopathy-a-rare-and-reversible-cause-of-dementia
#5
Diego Barragán-Martínez, Ana Simarro-Díaz, Patricia Calleja-Castaño, Aurelio Hernández-Laín, Ana Ramos-González, Alberto Villarejo-Galende
No abstract text is available yet for this article.
March 2017: Neurology® Neuroimmunology & Neuroinflammation
https://www.readbyqxmd.com/read/28100738/mir-142-3p-is-a-key-regulator-of-il-1%C3%AE-dependent-synaptopathy-in-neuroinflammation
#6
Georgia Mandolesi, Francesca De Vito, Alessandra Musella, Antonietta Gentile, Silvia Bullitta, Diego Fresegna, Helena Sepman, Claudio Di Sanza, Nabila Haji, Francesco Mori, Fabio Buttari, Emerald Perlas, Maria Teresa Ciotti, Eran Hornstein, Irene Bozzoni, Carlo Presutti, Diego Centonze
: MicroRNAs (miRNA) play an important role in post-transcriptional gene regulation of several physiological and pathological processes. In multiple sclerosis (MS), a chronic inflammatory and degenerative disease of the CNS, and in its mouse model, the experimental autoimmune encephalomyelitis (EAE), miRNA dysregulation has been mainly related to immune system dysfunction and white matter (WM) pathology. However, little is known about their role in gray matter pathology. Here, we explored miRNA involvement in the inflammation-driven alterations of synaptic structure and function, collectively known as synaptopathy, a neuropathological process contributing to excitotoxic neurodegeneration in MS/EAE...
January 18, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28100685/heat-stress-induces-ferroptosis-like-cell-death-in-plants
#7
Ayelén Mariana Distéfano, María Victoria Martin, Juan Pablo Córdoba, Andrés Martín Bellido, Sebastián D'Ippólito, Silvana Lorena Colman, Débora Soto, Juan Alfredo Roldán, Carlos Guillermo Bartoli, Eduardo Julián Zabaleta, Diego Fernando Fiol, Brent R Stockwell, Scott J Dixon, Gabriela Carolina Pagnussat
In plants, regulated cell death (RCD) plays critical roles during development and is essential for plant-specific responses to abiotic and biotic stresses. Ferroptosis is an iron-dependent, oxidative, nonapoptotic form of cell death recently described in animal cells. In animal cells, this process can be triggered by depletion of glutathione (GSH) and accumulation of lipid reactive oxygen species (ROS). We investigated whether a similar process could be relevant to cell death in plants. Remarkably, heat shock (HS)-induced RCD, but not reproductive or vascular development, was found to involve a ferroptosis-like cell death process...
January 18, 2017: Journal of Cell Biology
https://www.readbyqxmd.com/read/28099548/teledermatology-in-tijuana-mexico
#8
Megan Brown
The Health Frontiers in Tijuana (HFiT) clinic is a binational partnership between the University of California, San Diego School of Medicine (San Diego, California); the Universidad Autónoma de Baja California School of Medicine (Tijuana, Mexico); and Desayunador Salesiano Padre Chava, a community grassroots organization in Tijuana, Mexico. Health Frontiers in Tijuana provides accessible quality health care for the underserved in Tijuana's Zona Norte. This article is a narrative meant to share my clinical experience as a dermatology resident who worked with HFiT to establish teledermatology services at this clinic...
December 2016: Cutis; Cutaneous Medicine for the Practitioner
https://www.readbyqxmd.com/read/28099526/executive-functioning-in-men-with-schizophrenia-and-substance-use-disorders-influence-of-lifetime-suicide-attempts
#9
Ana Adan, Maria Del Mar Capella, Gemma Prat, Diego A Forero, Silvia López-Vera, José Francisco Navarro
BACKGROUND: Lifetime suicide attempts in patients with comorbidity between psychotic disorders and Substance Use Disorder (SUD), known as dual diagnosis, was associated with a worse clinical and cognitive state, poor prognosis and premature death. However, to date no previous study has examined the cognitive performance of these patients considering as independent the presence or absence of lifetime suicide attempts. METHODS: We explore executive functioning differences between suicide attempters and non-attempters in dual schizophrenia (DS) patients and the possible related factors for both executive performance and current suicide risk...
2017: PloS One
https://www.readbyqxmd.com/read/28098495/psychometric-characteristics-of-the-insomnia-severity-index-in-veterans-with-history-of-traumatic-brain-injury
#10
Christopher N Kaufmann, Henry J Orff, Raeanne C Moore, Lisa Delano-Wood, Colin A Depp, Dawn M Schiehser
OBJECTIVE/BACKGROUND: The Insomnia Severity Index (ISI) is a widely used self-report measure of insomnia symptoms. However, to date this measure has not been validated or well-characterized in veterans who have experienced traumatic brain injury (TBI). This study assessed the psychometric properties and convergent, divergent, construct, and discriminate validity of the ISI in veterans with a history of TBI. PARTICIPANTS: Eighty-three veterans with history of TBI were seen in the VA San Diego Healthcare System as part of a research protocol...
January 18, 2017: Behavioral Sleep Medicine
https://www.readbyqxmd.com/read/28096580/randomized-double-blind-comparison-of-remifentanil-and-alfentanil-in-patients-undergoing-laparoscopic-cholecystectomy-using-total-intravenous-anesthesia
#11
José M Beleña, Mónica Núñez, Alfonso Vidal, Diego Anta
BACKGROUND AND AIMS: To compare the use of remifentanil and alfentanil to suppress intraoperative adrenergic response of pain and the influence of these drugs on the recovery profile in patients undergoing laparoscopic cholecystectomy using a total intravenous anesthesia (TIVA) technique. MATERIAL AND METHODS: One hundred patients undergoing elective laparoscopic cholecystectomy were randomized to be managed with either remifentanil (group R) or alfentanil (group A)...
October 2016: Journal of Anaesthesiology, Clinical Pharmacology
https://www.readbyqxmd.com/read/28096521/decreased-esophageal-sensitivity-to-acid-in-morbidly-obese-patients-a-cause-for-concern
#12
Vicente Ortiz, Diego Alvarez-Sotomayor, Esteban Sáez-González, Francia Carolina Díaz-Jaime, Marisa Iborra, Julio Ponce, Vicente Garrigues
Background/Aims: To evaluate esophageal sensitivity to acid between morbidly obese (MO) patients and non-MO controls with abnormal esophageal acid exposure. Methods: We conducted a cross-sectional study of 58 patients: 30 MO (cases) and 28 non-MO (controls). Esophageal symptoms and esophageal sensitivity to 0.1 M hydrochloric acid solution (Bernstein test) were compared between MO and non-MO patients with a prior diagnosis of abnormal esophageal acid exposure. Results: MO patients were less symptomatic than non-MO controls (14% vs 96%; odds ratio [OR], 0...
January 20, 2017: Gut and Liver
https://www.readbyqxmd.com/read/28093491/early-microgliosis-precedes-neuronal-loss-and-behavioural-impairment-in-mice-with-a-frontotemporal-dementia-causing-chmp2b-mutation
#13
Emma L Clayton, Renzo Mancuso, Troels Tolstrup Nielsen, Sarah Mizielinska, Holly Holmes, Nicholas Powell, Frances Norona, Jytte Overgaard Larsen, Carmelo Milioto, Katherine M Wilson, Mark F Lythgoe, Sebastian Ourselin, Jörgen E Nielsen, Peter Johannsen, Ida Holm, John Collinge, A Frej, Peter L Oliver, Diego Gomez-Nicola, Adrian M Isaacs
Frontotemporal dementia (FTD)-causing mutations in the CHMP2B gene lead to the generation of mutant C-terminally truncated CHMP2B. We report that transgenic mice expressing endogenous levels of mutant CHMP2B developed late-onset brain volume loss associated with frank neuronal loss and FTD-like changes in social behaviour. These data are the first to show neurodegeneration in mice expressing mutant CHMP2B and indicate that our mouse model is able to recapitulate neurodegenerative changes observed in FTD. Neuroinflammation has been increasingly implicated in neurodegeneration, including FTD...
January 16, 2017: Human Molecular Genetics
https://www.readbyqxmd.com/read/28093474/behavioral-status-influences-the-dependence-of-odorant-induced-change-in-firing-on-pre-stimulus-firing-rate
#14
Anan Li, Ethan M Guthman, Wilder T Doucette, Diego Restrepo
: The firing rate of the mitral/tufted cells in the olfactory bulb is known to undergo significant trial-to-trial variability and is affected by anesthesia. Here we ask whether odorant-elicited changes in firing rate depend on the rate before application of the stimulus in the awake and anesthetized mouse. We find that pre-stimulus firing rate varies widely on a trial-to-trial basis and that the stimulus-induced change in firing rate decreases with increasing pre-stimulus firing rate...
January 16, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28093101/autoinmune-pancreatitis-differential-diagnosis-with-pancreatic-adenocarcinoma
#15
Diego Tristán Enjuto Martínez, Norberto Herrera Merino, Marta Pérez González, Rosa Llorente Lázaro, Pilar Castro Carbajo
No abstract text is available yet for this article.
January 13, 2017: Cirugía Española
https://www.readbyqxmd.com/read/28093053/examiner-s-experience-and-the-outcome-interpretation-of-icdas-and-nyvad-s-system-a-prospective-in-vitro-study
#16
Vinicius Krieger Costa Nogueira, Diego Girotto Bussaneli, Elaine Pereira Da Silva Tagliaferro, Rubens Spin-Neto, Alfonso Escobar, Rita De Cássia Loiola Cordeiro
OBJECTIVE: To evaluate, prospectively, the influence of examiner's experience in interpreting and applying the caries detection systems ICDAS (IC) and Nyvad (NY). MATERIAL AND METHODS: Twelve second-year undergraduate dental students (UG) and 12 postgraduates (PG) MSc level analysed and codified 77 clinical dental caries photographs at three different moments: initially, without any training; after one week of receiving training through a theoretical class; and after two years...
January 16, 2017: Acta Odontologica Scandinavica
https://www.readbyqxmd.com/read/28092918/complete-sequence-and-organization-of-pfr260-the-bacillus-thuringiensis-inta-fr7-4-plasmid-harboring-insecticidal-genes
#17
Laura E Navas, Ariel F Amadio, Elio M Ortiz, Diego H Sauka, Graciela B Benintende, Marcelo F Berretta, Rubén O Zandomeni
We report the complete sequence and analysis of pFR260, a novel megaplasmid of 260,595 bp from the Bacillus thuringiensis strain INTA Fr7-4 isolated in Argentina. It carries 7 insecticidal genes: 3 cry8 copies previously reported, 2 vip1, and 2 vip2. Also, it carries a gene encoding a putative atypical Cry protein. These genes are arranged in a region of approximately 105 kbp in size with characteristics of a pathogenicity island with a potential coleopteran-specific insecticide profile. DNA strand composition asymmetry, as determined by GC skew analysis, and the presence of a Rep protein involved in the initiation of replication suggest a bidirectional theta mechanism of replication...
January 17, 2017: Journal of Molecular Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28090674/ns5b-promotes-degradation-of-the-nore1a-tumor-suppressor-to-facilitate-hepatitis-c-virus-replication
#18
Payal Arora, Amartya Basu, M Lee Schmidt, Geoffrey J Clark, Howard Donninger, Daniel B Nichols, Diego F Calvisi, Neerja Kaushik-Basu
: Hepatitis C infection is a common risk factor for the development of liver cancer. The molecular mechanisms underlying this effect are only partially understood. Here we show that the HCV protein NS5B directly binds to the tumor suppressor NORE1A (RASSF5) and promotes its proteosomal degradation. In addition, we show that NORE1A co-localizes to sites of HCV viral replication and suppresses the process. Thus, NORE1A has anti-viral activity which is specifically antagonized by NS5B. Moreover, the suppression of NORE1A protein levels correlated almost perfectly with elevation of Ras activity in primary human samples...
January 16, 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/28089911/atypical-composition-and-structure-of-the-mitochondrial-dimeric-atp-synthase-from-euglena-gracilis
#19
K N Sathish Yadav, Héctor V Miranda-Astudillo, Lilia Colina-Tenorio, Fabrice Bouillenne, Hervé Degand, Pierre Morsomme, Diego González-Halphen, Egbert J Boekema, Pierre Cardol
Mitochondrial respiratory-chain complexes from Euglenozoa comprise classical subunits described in other eukaryotes (i.e. mammals and fungi) and subunits that are restricted to Euglenozoa (e.g. Euglena gracilis and Trypanosoma brucei). Here we studied the mitochondrial F1FO-ATP synthase (or Complex V) from the photosynthetic eukaryote E. gracilis in detail. The enzyme was purified by a two-step chromatographic procedure and its subunit composition was resolved by a three-dimensional gel electrophoresis (BN/SDS/SDS)...
January 12, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28089205/on-the-power-profiles-of-contact-lenses-measured-with-nimo-tr1504
#20
Manuel Rodríguez-Vallejo, Diego Montagud, Juan A Monsoriu, Walter D Furlan
No abstract text is available yet for this article.
January 11, 2017: Journal of Optometry
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