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https://www.readbyqxmd.com/read/28789903/patients-with-resected-histologically-re-confirmed-pancreatic-ductal-adenocarcinoma-pdac-can-achieve-long-term-survival-despite-t3-tumour-or-nodal-involvement-the-finnish-register-study-2000-2013
#1
Reea Ahola, Antti Siiki, Kaija Vasama, Martine Vornanen, Juhani Sand, Johanna Laukkarinen
BACKGROUND: Long-term survival of patients with operated pancreatic ductal adenocarcinoma (PDAC) has been associated with resection status, disease stage and centralisation. However, no previous reports are available about long-term survivors of PDAC with confirmed histology covering an entire nation. Our aim was to analyze retrospectively confirmed long-term survivors of PDAC operated on in Finland 2000-2008. METHOD: PDAC patients operated between 2000 and 2008 were selected from Finnish patient registers and archives...
July 29, 2017: Pancreatology: Official Journal of the International Association of Pancreatology (IAP) ... [et Al.]
https://www.readbyqxmd.com/read/28758205/clustered-organization-and-region-specific-identities-of-estrogen-producing-neurons-in-the-forebrain-of-zebra-finches-taeniopygia-guttata
#2
Maaya Z Ikeda, Amanda A Krentzel, Tessa J Oliver, Garrett B Scarpa, Luke Remage-Healey
A fast, neuromodulatory role for estrogen signaling has been reported in many regions of the vertebrate brain. Regional differences in the cellular distribution of aromatase (estrogen synthase) in several species suggest that mechanisms for neuroestrogen signaling differ between and even within brain regions. A more comprehensive understanding of neuroestrogen signaling depends on characterizing the cellular identities of neurons that express aromatase. Calcium-binding proteins such as parvalbumin and calbindin are molecular markers for interneuron subtypes, and are co-expressed with aromatase in human temporal cortex...
July 31, 2017: Journal of Comparative Neurology
https://www.readbyqxmd.com/read/28743448/chronic-cb1-cannabinoid-receptor-antagonism-persistently-increases-dendritic-spine-densities-in-brain-regions-important-to-zebra-finch-vocal-learning-and-production-in-an-antidepressant-sensitive-manner
#3
Tessa L Holland, Ken Soderstrom
During typical late-postnatal CNS development, net reductions in dendritic spine densities are associated with activity-dependent learning. Prior results showed agonist exposure in young animals increased spine densities in a subset of song regions while adult exposures did not, suggesting endocannabinoid signaling regulates dendritic spine dynamics important to vocal development. Here we addressed this question using the CB1 receptor-selective antagonist SR141716A (SR) to disrupt endocannabinoid signaling both during and after vocal learning...
July 22, 2017: Brain Research
https://www.readbyqxmd.com/read/28617829/rhythmic-syllable-related-activity-in-a-songbird-motor-thalamic-nucleus-necessary-for-learned-vocalizations
#4
Husain H Danish, Dmitriy Aronov, Michale S Fee
Birdsong is a complex behavior that exhibits hierarchical organization. While the representation of singing behavior and its hierarchical organization has been studied in some detail in avian cortical premotor circuits, our understanding of the role of the thalamus in adult birdsong is incomplete. Using a combination of behavioral and electrophysiological studies, we seek to expand on earlier work showing that the thalamic nucleus Uvaeformis (Uva) is necessary for the production of stereotyped, adult song in zebra finch (Taeniopygia guttata)...
2017: PloS One
https://www.readbyqxmd.com/read/28578082/an-updated-comparison-of-high-and-low-viscosity-cement-vertebroplasty-in-the-treatment-of-osteoporotic-thoracolumbar-vertebral-compression-fractures-a-retrospective-cohort-study
#5
Zhao-Fei Zhang, Jun-Long Yang, Huan-Chang Jiang, Zhen Lai, Feng Wu, Yong-Quan Pan, Zhi-Xiang Liu
OBJECTIVE: This study mainly aimed to evaluate complications of cement leakage for osteoporotic thoracolumbar vertebral compression fractures by PVP using HVC, and access the clinical efficacy. METHODS: Between May 2013 and June 2015, 66 patients with osteoporotic thoracolumbar vertebral compression fractures, who underwent PVP (36 HVC and 30 LVC) in our hospital, were enrolled. Cement leakage, Visual Analog Scale (VAS), Oswestry Disability Index (ODI), refracture of the cemented vertebrae, and adjacent vertebral fractures were evaluated...
May 31, 2017: International Journal of Surgery
https://www.readbyqxmd.com/read/28555201/reconstruction-of-horizontovertical-alveolar-defects-presentation-of-a-novel-split-thickness-flap-design-%C3%A2-for-guided-bone-regeneration-%C3%A2-a-case-report-with-5-year-follow-up
#6
Peter Windisch, Anna Martin, Arvin Shahbazi, Balint Molnar
OBJECTIVE: To introduce a novel split-thickness flap design without periosteal and vertical releasing incisions for horizontovertical ridge augmentation. METHOD AND MATERIALS: Three patients with generalized chronic periodontitis presented posterior partial edentulism with class C alveolar defects according to the horizontal, vertical, and combination (HVC) classification. In all three cases, implant placement and simultaneous horizontovertical ridge augmentation utilizing a novel split-thickness flap design was performed...
2017: Quintessence International
https://www.readbyqxmd.com/read/28534541/-effectiveness-of-second-generation-direct-acting-antivirals-in-chronic-hepatitis-c
#7
R Juanbeltz Zurbano, J M Zozaya Urmeneta, J Repáraz Padrós, J Castilla Catalán, M T Sarobe Carricas, J I Úriz-Otano, M Gracia Ruiz de Alda, R San Miguel Elcano
BACKGROUND: Second-generation direct-acting antivirals (DAA) have shown high sustained virologic response (SVR) for the treatment of chronic hepatitis C in clinical trials. The objective of this study is to estimate DAA effectiveness in treatment of this disease. METHODS: Hepatitis C virus (HCV) monoinfected patients and HCV-human immunodeficiency virus (HIV) coinfected pa-tients who started interferon-free DAA based regimens during 2015 were included. The primary effectiveness outcome was SVR, defined as an undetectable viral load 12 weeks after the end of treatment...
April 30, 2017: Anales del Sistema Sanitario de Navarra
https://www.readbyqxmd.com/read/28514229/an-open-source-wireless-capable-miniature-microscope-system
#8
William A Liberti, L Nathan Perkins, Daniel P Leman, Timothy J Gardner
OBJECTIVE: Fluorescence imaging through head-mounted microscopes in freely behaving animals is becoming a standard method to study neural circuit function. Flexible, open-source designs are needed to spur evolution of the method. APPROACH: We describe a miniature microscope for single-photon fluorescence imaging in freely behaving animals. The device is made from 3D printed parts and off-the-shelf components. These microscopes weigh less than 1.8 g, can be configured to image a variety of fluorophores, and can be used wirelessly or in conjunction with active commutators...
May 17, 2017: Journal of Neural Engineering
https://www.readbyqxmd.com/read/28511945/low-rates-of-aseptic-tibial-loosening-in-obese-patients-with-use-of-high-viscosity-cement-and-standard-tibial-tray-2-year-minimum-follow-up
#9
David A Crawford, Keith R Berend, Denis Nam, Robert L Barrack, Joanne B Adams, Adolph V Lombardi
BACKGROUND: Total knee arthroplasty is overall a very successful surgery, but complications do occur. These complications include aseptic loosening of the tibial component, and obese patients are among the highest risk group. High-viscosity cement (HVC) has been implicated as a possible cause for aseptic loosening of the tibial component. The purpose of this study was to evaluate the incidence of aseptic loosening of the tibial component in obese patients with the use of HVC and standard tibial tray...
April 22, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28393548/hiv-and-hcv-infection-among-opiate-dependent-patients-and-methadone-doses-the-proteus-study
#10
Carlos Roncero, Daniel Fuster, Raul Felipe Palma-Álvarez, Laia Rodriguez-Cintas, Nieves Martinez-Luna, F Javier Álvarez
Human immunodeficiency virus (HIV) and hepatitis C virus (HCV) are prevalent infections in opiate-dependent patients. Opiate replacement treatment (ORT) with methadone or buprenorphine is associated with several important outcomes among patients with opiate dependence. However, little is known about outcomes in patients with HIV and/or HCV infections that are in ORT. Also, it is not well established whether the presence of HCV or HIV infection could be associated with higher methadone doses. This paper reanalyzes the database of PROTEUS study, using two principal variables: methadone dose and presence of HIV and/or HCV infection...
April 9, 2017: AIDS Care
https://www.readbyqxmd.com/read/28381490/a-distributed-neural-network-model-for-the-distinct-roles-of-medial-and-lateral-hvc-in-zebra-finch-song-production
#11
Daniel Galvis, Wei Wu, Richard L Hyson, Frank Johnson, Richard Bertram
Male zebra finches produce a song consisting of a canonical sequence of syllables, learned from a tutor and repeated throughout its adult life. Much of the neural circuitry responsible for this behavior is located in the cortical premotor region HVC (acronym is name). In a recent study from our laboratory, we found that partial bilateral ablation of the medial portion of HVC has effects on the song that are qualitatively different from those of bilateral ablation of the lateral portion. In this report we describe a neural network organization that can explain these data, and in so doing suggests key roles for other brain nuclei in the production of song...
August 1, 2017: Journal of Neurophysiology
https://www.readbyqxmd.com/read/28369802/direct-acting-antivirals-for-hepatitis-c-virus-induce-a-rapid-clinical-and-biochemical-remission-of-porphyria-cutanea-tarda
#12
A Combalia, J To-Figueras, M Laguno, M Martinez-Rebollar, P Aguilera
Sporadic porphyria cutanea tarda (PCT) is strongly associated with HCV infection in our population (1,2,3,4.) . Therapeutic options for PCT include phlebotomies and low-dose 4-aminoquinolines, which show high rates of disease remission. However, some PCT patients may present frequent relapses attributable to resistance/intolerability/poor adherence to conventional treatments and/or persistence of risk factors. In 2014 we reported the first case of a patient with active PCT and HCV-HIV co-infection cured with direct antiviral agents (DAAs) (5) ...
March 29, 2017: British Journal of Dermatology
https://www.readbyqxmd.com/read/28346140/em-connectomics-reveals-axonal-target-variation-in-a-sequence-generating-network
#13
Jörgen Kornfeld, Sam E Benezra, Rajeevan T Narayanan, Fabian Svara, Robert Egger, Marcel Oberlaender, Winfried Denk, Michael A Long
The sequential activation of neurons has been observed in various areas of the brain, but in no case is the underlying network structure well understood. Here we examined the circuit anatomy of zebra finch HVC, a cortical region that generates sequences underlying the temporal progression of the song. We combined serial block-face electron microscopy with light microscopy to determine the cell types targeted by HVC(RA) neurons, which control song timing. Close to their soma, axons almost exclusively targeted inhibitory interneurons, consistent with what had been found with electrical recordings from pairs of cells...
March 27, 2017: ELife
https://www.readbyqxmd.com/read/28322509/teaching-medical-students-about-cost-effectiveness
#14
Mark Iscoe, Robert Lord, John Schulz, David Lee, Danelle Cayea, Amit Pahwa
BACKGROUND: Rising and burdensome health care costs have driven interest in the practice of high-value care (HVC) and have inspired calls for increased HVC training across all levels of medical education, including among undergraduate medical students. CONTEXT: Classroom-based HVC curricula targeted to medical students have not been previously described in the medical literature. INNOVATION: We developed and evaluated a workshop comprising a lecture, a small-group exercise and a group discussion to instruct medical students on interpreting cost-effectiveness analyses (CEA), applying CEA to patient care and discussing the cost of care with patients...
March 21, 2017: Clinical Teacher
https://www.readbyqxmd.com/read/28288467/tattoo-infections-personal-resistance-and-contagious-exposure-through-tattooing
#15
Jørgen Serup
Bacterial infection of tattoos remains a common complication. Pyogenic bacteria can cause infections shortly after the tattoo is made. Severity of infection varies from minor to major, ultimately with life-threatening septicemia. Viral infections may be introduced, i.e. HVB, HVC, and HIV. The risk of infection depends on the following triad: microbial pathogen and its aggressiveness, individual resistance of the tattooed, and inoculation and exposures by the tattoo needle and in the tattoo parlor. Some infectious risks can be controlled...
2017: Current Problems in Dermatology
https://www.readbyqxmd.com/read/28245938/hcv-core-antigen-assay-as-an-alternative-to-hcv-rna-quantification-a-correlation-study-for-the-assessment-of-hcv-viremia
#16
Roberto Alonso, Felipe Pérez-García, Paula López-Roa, Luis Alcalá, Pilar Rodeño, Emilio Bouza
INTRODUCTION: Detection of hepatitis C virus (HCV) RNA and the HCV core antigen assay (HCV-Ag) are reliable techniques for the diagnosis of active and chronic HCV infection. Our aim was to evaluate the HCV-Ag assay as an alternative to quantification of HVC RNA. METHODS: A comparison was made of the sensitivity and specificity of an HCV-Ag assay (204 serum samples) with those of a PCR assay, and the correlation between the two techniques was determined. RESULTS: The sensitivity and specificity of HCV-Ag was 76...
February 25, 2017: Enfermedades Infecciosas y Microbiología Clínica
https://www.readbyqxmd.com/read/28214021/arfi-elastography-changes-after-direct-acting-antiviral-treatment-in-transplanted-livers-with-relapse-of-hepatitis-c-virus-infection
#17
M Alfageme Zubillaga, T Fontanilla Echeveste, I Pérez González, A Royuela Vicente, A M Duca, R M Ruiz Peralbo, C González Hernando
OBJECTIVE: To evaluate the changes in the values obtained in acoustic radiation force impulse (ARFI) elastography of the liver after antiviral treatment in patients with liver transplants and hepatitis C virus (HVC) infection recurring after transplantation. MATERIAL AND METHODS: We studied 15 patients infected with HVC who had received liver transplants where an HVC infection recurring in the graft within one year after the transplant was treated with direct-acting antivirals...
March 2017: Radiología
https://www.readbyqxmd.com/read/28188629/orthogonal-topography-in-the-parallel-input-architecture-of-songbird-hvc
#18
Kevin C Elliott, Wei Wu, Richard Bertram, Richard L Hyson, Frank Johnson
Neural activity within the cortical premotor nucleus HVC (acronym is name) encodes the learned songs of adult male zebra finches (Taeniopygia guttata). HVC activity is driven and/or modulated by a group of five afferent nuclei (the Medial Magnocellular nucleus of the Anterior Nidopallium, MMAN; Nucleus Interface, NIf; nucleus Avalanche, Av; the Robust nucleus of the Arcopallium, RA; the Uvaeform nucleus, Uva). While earlier evidence suggested that HVC receives a uniformly distributed and nontopographic pattern of afferent input, recent evidence suggests this view is incorrect (Basista et al...
February 11, 2017: Journal of Comparative Neurology
https://www.readbyqxmd.com/read/28170164/perineuronal-nets-and-vocal-plasticity-in-songbirds-a-proposed-mechanism-to-explain-the-difference-between-closed-ended-and-open-ended-learning
#19
Gilles Cornez, Farrah N Madison, Annemie Van der Linden, Charlotte Cornil, Kathleen M Yoder, Gregory F Ball, Jacques Balthazart
Perineuronal nets (PNN) are aggregations of chondroitin sulfate proteoglycans surrounding the soma and proximal processes of neurons, mostly GABAergic interneurons expressing parvalbumin. They limit the plasticity of their afferent synaptic connections. In zebra finches PNN develop in an experience-dependent manner in the song control nuclei HVC and RA (nucleus robustus arcopallialis) when young birds crystallize their song. Because songbird species that are open-ended learners tend to recapitulate each year the different phases of song learning until their song crystallizes at the beginning of the breeding season, we tested whether seasonal changes in PNN expression would be found in the song control nuclei of a seasonally breeding species such as the European starling...
September 2017: Developmental Neurobiology
https://www.readbyqxmd.com/read/28159910/temperature-manipulation-in-songbird-brain-implicates-the-premotor-nucleus-hvc-in-birdsong-syntax
#20
Yisi S Zhang, Jason D Wittenbach, Dezhe Z Jin, Alexay A Kozhevnikov
Variable motor sequences of animals are often structured and can be described by probabilistic transition rules between action elements. Examples include the songs of many songbird species such as the Bengalese finch, which consist of stereotypical syllables sequenced according to probabilistic rules (song syntax). The neural mechanisms behind such rules are poorly understood. Here we investigate where the song syntax is encoded in the brain of the Bengalese finch by rapidly and reversibly manipulating the temperature in the song production pathway...
February 3, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
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