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https://www.readbyqxmd.com/read/28335039/brain-temporal-complexity-in-explaining-the-therapeutic-and-cognitive-effects-of-seizure-therapy
#1
Faranak Farzan, Sravya Atluri, Ye Mei, Sylvain Moreno, Andrea J Levinson, Daniel M Blumberger, Zafiris J Daskalakis
Over 350 million people worldwide suffer from depression, a third of whom are medication-resistant. Seizure therapy remains the most effective treatment in depression, even when many treatments fail. The utility of seizure therapy is limited due to its cognitive side effects and stigma. The biological targets of seizure therapy remain unknown, hindering design of new treatments with comparable efficacy. Seizures impact the brains temporal dynamicity observed through electroencephalography. This dynamicity reflects richness of information processing across distributed brain networks subserving affective and cognitive processes...
March 3, 2017: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/28335024/impaired-dual-tasking-in-parkinson-s-disease-is-associated-with-reduced-focusing-of-cortico-striatal-activity
#2
Freek Nieuwhof, Bastiaan R Bloem, Miriam F Reelick, Esther Aarts, Inbal Maidan, Anat Mirelman, Jeffrey M Hausdorff, Ivan Toni, Rick C Helmich
Impaired dual tasking, namely the inability to concurrently perform a cognitive and a motor task (e.g. 'stops walking while talking'), is a largely unexplained and frequent symptom of Parkinson's disease. Here we consider two circuit-level accounts of how striatal dopamine depletion might lead to impaired dual tasking in patients with Parkinson's disease. First, the loss of segregation between striatal territories induced by dopamine depletion may lead to dysfunctional overlaps between the motor and cognitive processes usually implemented in parallel cortico-striatal circuits...
March 17, 2017: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/28335021/mri-visible-perivascular-space-location-is-associated-with-alzheimer-s-disease-independently-of-amyloid-burden
#3
Gargi Banerjee, Hee Jin Kim, Zoe Fox, H Rolf Jäger, Duncan Wilson, Andreas Charidimou, Han Kyu Na, Duk L Na, Sang Won Seo, David J Werring
Perivascular spaces that are visible on magnetic resonance imaging (MRI) are a neuroimaging marker of cerebral small vessel disease. Their location may relate to the type of underlying small vessel pathology: those in the white matter centrum semi-ovale have been associated with cerebral amyloid angiopathy, while those in the basal ganglia have been associated with deep perforating artery arteriolosclerosis. As cerebral amyloid angiopathy is an almost invariable pathological finding in Alzheimer's disease, we hypothesized that MRI-visible perivascular spaces in the centrum semi-ovale would be associated with a clinical diagnosis of Alzheimer's disease, whereas those in the basal ganglia would be associated with subcortical vascular cognitive impairment...
February 17, 2017: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/28334998/spatiotemporal-mapping-of-epileptic-spikes-using-simultaneous-eeg-functional-mri
#4
Jennifer M Walz, Mangor Pedersen, Amir Omidvarnia, Mira Semmelroch, Graeme D Jackson
Epileptic spikes occur on the sub-second timescale and are known to involve not only epileptic foci but also large-scale distributed brain networks. There is likely to be a sequence of neural activity in multiple brain regions that occurs within the duration of a single spike, but standard electroencephalography-functional magnetic resonance imaging analyses, which use only the timing of the spikes to model the functional magnetic resonance imaging data, cannot determine the sequence of these activations. Our aim in this study is to temporally resolve these spatial activations to observe the spatiotemporal dynamics of the spike-related neural activity at a sub-second timescale...
February 20, 2017: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/28334883/selective-impairment-of-hippocampus-and-posterior-hub-areas-in-alzheimer-s-disease-an-meg-based-multiplex-network-study
#5
Meichen Yu, Marjolein M A Engels, Arjan Hillebrand, Elisabeth C W van Straaten, Alida A Gouw, Charlotte Teunissen, Wiesje M van der Flier, Philip Scheltens, Cornelis J Stam
Although frequency-specific network analyses have shown that functional brain networks are altered in patients with Alzheimer's disease, the relationships between these frequency-specific network alterations remain largely unknown. Multiplex network analysis is a novel network approach to study complex systems consisting of subsystems with different types of connectivity patterns. In this study, we used magnetoencephalography to integrate five frequency-band specific brain networks in a multiplex framework...
March 16, 2017: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/28334851/the-modulatory-effect-of-adaptive-deep-brain-stimulation-on-beta-bursts-in-parkinson-s-disease
#6
Gerd Tinkhauser, Alek Pogosyan, Simon Little, Martijn Beudel, Damian M Herz, Huiling Tan, Peter Brown
Adaptive deep brain stimulation uses feedback about the state of neural circuits to control stimulation rather than delivering fixed stimulation all the time, as currently performed. In patients with Parkinson's disease, elevations in beta activity (13-35 Hz) in the subthalamic nucleus have been demonstrated to correlate with clinical impairment and have provided the basis for feedback control in trials of adaptive deep brain stimulation. These pilot studies have suggested that adaptive deep brain stimulation may potentially be more effective, efficient and selective than conventional deep brain stimulation, implying mechanistic differences between the two approaches...
February 13, 2017: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/28334327/autologous-vs-irradiated-homologous-costal-cartilage-as-graft-material-in-rhinoplasty
#7
Jee Hye Wee, Sue Jean Mun, Woo Sung Na, Heejin Kim, Joo Hyun Park, Dong-Kyu Kim, Hong-Ryul Jin
Importance: Studies comparing surgical results of rhinoplasty using autologous costal cartilage (ACC) and irradiated homologous costal cartilage (IHCC) are rare. Objectives: To compare the clinical results of major augmentation rhinoplasty using ACC vs IHCC and analyze the histologic properties of both types of cartilage. Design, Setting, and Participants: A retrospective clinical study was conducted among patients who had undergone rhinoseptoplasty using ACC or IHCC from January 1, 2009, to December 31, 2014...
March 23, 2017: JAMA Facial Plastic Surgery
https://www.readbyqxmd.com/read/28334141/distribution-of-antimicrobial-resistance-determinants-virulence-associated-factors-and-crispr-loci-in-isolates-of-enterococcus-faecalis-from-various-settings-and-genetic-lineages
#8
Iwona Gawryszewska, Katarzyna Malinowska, Alicja Kuch, Dorota Chrobak-Chmiel, Lucja Laniewska-Trokenheim, Waleria Hryniewicz, Ewa Sadowy
Enterococcus faecalis represents an important factor of hospital-associated infections (HAIs). The knowledge on its evolution from a commensal to an opportunistic pathogen is still limited, thus we performed a study to characterize distribution of factors that may contribute to this adaptation. Using a collection obtained from various settings (hospitalized patients, community carriers, animals, fresh food, sewage, water) we investigated differences in antimicrobial susceptibility, distribution of antimicrobial resistance genes, virulence-associated determinants and phenotypes, and CRISPR loci in the context of the clonal relatedness of isolates...
March 1, 2017: Pathogens and Disease
https://www.readbyqxmd.com/read/28333948/epigenomic-annotation-of-noncoding-mutations-identifies-mutated-pathways-in-primary-liver-cancer
#9
Rebecca F Lowdon, Ting Wang
Evidence that noncoding mutation can result in cancer driver events is mounting. However, it is more difficult to assign molecular biological consequences to noncoding mutations than to coding mutations, and a typical cancer genome contains many more noncoding mutations than protein-coding mutations. Accordingly, parsing functional noncoding mutation signal from noise remains an important challenge. Here we use an empirical approach to identify putatively functional noncoding somatic single nucleotide variants (SNVs) from liver cancer genomes...
2017: PloS One
https://www.readbyqxmd.com/read/28333926/performance-of-tci-tcvi-tcii-chagas-flow-ate-igg2a-for-universal-and-genotype-specific-serodiagnosis-of-trypanosoma-cruzi-infection
#10
Glaucia Diniz Alessio, Fernanda Fortes de Araújo, Denise Fonseca Côrtes, Policarpo Ademar Sales Júnior, Daniela Cristina Lima, Matheus de Souza Gomes, Laurence Rodrigues do Amaral, Marcelo Antônio Pascoal Xavier, Andréa Teixeira-Carvalho, Olindo Assis Martins-Filho, Marta de Lana
Distinct Trypanosoma cruzi genotypes have been considered relevant for patient management and therapeutic response Chagas disease. However, typing strategies for genotype-specific serodiagnosis of Chagas disease are still unavailable and requires standardization for practical application. In this study, an innovative TcI/TcVI/TcII Chagas Flow ATE-IgG2a technique was developed with applicability for universal and genotype-specific diagnosis of T. cruzi infection. For this purpose, the reactivity of serum samples (percentage of positive fluorescent parasites-PPFP) obtained from mice chronically infected with TcI/Colombiana, TcVI/CL or TcII/Y strain as well as non-infected controls were determined using amastigote-AMA, trypomastigote-TRYPO and epimastigote-EPI in parallel batches of TcI, TcVI and TcII target antigens...
March 23, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28333841/audit-of-ca125-follow-up-after-first-line-therapy-for-ovarian-cancer
#11
Daniel Krell, Fran Said Battistino, Sarah Benafif, Lochani Ganegoda, Marcia Hall, Gordon J S Rustin
AIMS: The Medical Research Council OVO5/EORTC 55955 trial showed that patients in remission after first-line therapy for ovarian cancer did not benefit from routine measurement of CA125 during follow-up. Since the presentation of these results, we have counseled patients about the options for follow-up and provided them with an information leaflet about the trial results and the symptoms that should prompt an early appointment and CA125 measurement. We present an audit of practice after the presentation of those results...
March 23, 2017: International Journal of Gynecological Cancer
https://www.readbyqxmd.com/read/28333840/primary-versus-preoperative-radiation-for-locally-advanced-vulvar-cancer
#12
Divya Natesan, Julian C Hong, Jonathan Foote, Julie A Sosa, Laura Havrilesky, Junzo Chino
OBJECTIVES: The objective of this study was to evaluate patterns of care and the survival impact of primary radiation and preoperative radiation therapy with surgery in women with locally advanced vulvar cancer using a large national cohort. METHODS AND MATERIALS: Women with vulvar cancer, diagnosed from 2004 to 2012, who received primary or preoperative radiation therapy were identified in the National Cancer Database. Patient characteristics, such as age, race, American Joint Committee on Cancer stage, and comorbidity score, were compared between those that received primary radiation only and those that received preoperative radiation with surgery using the χ, Fisher exact, and Mann-Whitney tests as appropriate...
March 23, 2017: International Journal of Gynecological Cancer
https://www.readbyqxmd.com/read/28333768/management-of-pediatric-non-alcoholic-fatty-liver-disease-by-academic-hepatologists-in-canada-a-nationwide-survey
#13
Marialena Mouzaki, Simon C Ling, Richard A Schreiber, Binita M Kamath
BACKGROUND: The literature on the optimal clinical management of pediatric patients with non-alcoholic fatty liver disease (NAFLD) is limited. The objective of this study was to identify discrepancies in the care provided to patients with NAFLD by hepatologists practicing in academic centers across Canada. METHODS: A nationwide survey was distributed electronically to all pediatric hepatologists practicing in university-affiliated hospitals using the infrastructure of the Canadian Pediatric Hepatology Research Group...
March 22, 2017: Journal of Pediatric Gastroenterology and Nutrition
https://www.readbyqxmd.com/read/28333760/antibiotic-associated-apoptotic-enterocolitis-in-the-absence-of-a-defined-pathogen-the-role-of-intestinal-microbiota-depletion
#14
Philipp Wurm, Walter Spindelboeck, Robert Krause, Johannes Plank, Gottfried Fuchs, Mina Bashir, Wolfgang Petritsch, Bettina Halwachs, Cord Langner, Christoph Högenauer, Gregor Gorkiewicz
OBJECTIVE: Antibiotic therapy is a major risk factor for the development of diarrhea and colitis with varying severity. Often the origin of antibiotic-associated gastrointestinal deterioration remains elusive and no specific infectious agents could be discerned. PATIENTS: We represent three cases of intractable high-volume diarrhea associated with combined antibiotic and steroid therapy in critically ill patients not fitting into established disease entities. Cases presented with severe apoptotic enterocolitis resembling acute intestinal graft-versus-host-disease...
March 22, 2017: Critical Care Medicine
https://www.readbyqxmd.com/read/28333688/treatment-planning-of-intensity-modulated-composite-particle-therapy-with-dose-and-linear-energy-transfer-optimization
#15
Taku Inaniwa, Nobuyuki Kanematsu, Koji Noda, Tadashi Kamada
The biological effect of charged-particle beams depends on both dose and radiation quality. The radiation quality of charged-particle beams has been most commonly represented by the linear energy transfer (LET) in radiation biology studies. We investigated a new therapeutic technique using two or more ion species in one treatment session, which we call an Intensity Modulated composite PArtiCle Therapy (IMPACT), for optimizing the physical dose and dose-averaged LET distributions in a patient as its proof of principle...
March 23, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28333570/plantar-pressure-and-surgical-indication-of-toe-arthroplasty-for-rheumatoid-forefoot-deformity
#16
Hyunho Lee, Hajime Ishikawa, Yusuke Miyagawa, Chinatsu Takai, Yumi Nomura, Tetsuya Nemoto, Daisuke Kobayashi, Asami Abe, Hiroshi Otani, Satoshi Ito, Kiyoshi Nakazono, Takao Ishii, Shu Saito, Yasuaki Tokuhashi, Akira Murasawa
OBJECTIVES: The objective of this study is to clarify the surgical indication for rheumatoid forefoot deformity according to background characteristics and plantar pressure. METHODS: Patients with rheumatoid arthritis were divided into a non-surgical group (group N) and a surgical group (group S). The former consisted of 225 ft, and the latter consisted of 88 ft. DAS28, Japanese Society for Surgery of the Foot rheumatoid arthritis foot and ankle scale (JSSF scale) and hallux valgus angle (HVA) were evaluated as background characteristics...
March 23, 2017: Modern Rheumatology
https://www.readbyqxmd.com/read/28333309/positive-margin-re-excision-following-immediate-autologous-breast-reconstruction-morbidity-cosmetic-outcome-and-oncologic-significance
#17
Oscar Ochoa, Constantine Theoharis, Steven Pisano, Minas Chrysopoulo, Peter Ledoux, Gary Arishita, Chet Nastala
Background: Acquisition of negative resection margins is paramount in the surgical management of operable breast cancer. Management of positive margins following mastectomy and immediate breast reconstruction is presently poorly defined. Objectives: The present study aims at defining morbidity and cosmetic sequela of re-excision procedures aimed at clearing involved mastectomy margins in the setting of immediate autologous breast reconstruction. Oncologic outcomes are recorded...
March 17, 2017: Aesthetic Surgery Journal
https://www.readbyqxmd.com/read/28333300/comparison-of-global-gene-expression-profiles-of-microdissected-human-foetal-leydig-cells-with-their-normal-and-hyperplastic-adult-equivalents
#18
Grete Lottrup, Kirstine Belling, Henrik Leffers, John E Nielsen, Marlene D Dalgaard, Anders Juul, Niels E Skakkebæk, Søren Brunak, Ewa Rajpert-De Meyts
STUDY QUESTION: Do human adult Leydig cells (ALCs) within hyperplastic micronodules display characteristics of foetal LCs (FLCs)? SUMMARY ANSWER: The gene expression profiles of FLCs and all ALC subgroups were clearly different, but there were no significant differences in expressed genes between the normally clustered and hyperplastic ALCs. WHAT IS KNOWN ALREADY: LCs are the primary androgen producing cells in males throughout development and appear in chronologically distinct populations; FLCs, neonatal LCs and ALCs...
March 17, 2017: Molecular Human Reproduction
https://www.readbyqxmd.com/read/28332992/clinical-implementation-of-a-model-based-in%C3%A2-vivo-dose-verification-system-for-stereotactic-body-radiation-therapy-volumetric-modulated-arc-therapy-treatments-using-the-electronic-portal-imaging-device
#19
Peter M McCowan, Ganiyu Asuni, Eric Van Uytven, Timothy VanBeek, Boyd M C McCurdy, Shaun K Loewen, Naseer Ahmed, Bashir Bashir, James B Butler, Amitava Chowdhury, Arbind Dubey, Ahmet Leylek, Maged Nashed
PURPOSE: To report findings from an in vivo dosimetry program implemented for all stereotactic body radiation therapy patients over a 31-month period and discuss the value and challenges of utilizing in vivo electronic portal imaging device (EPID) dosimetry clinically. METHODS AND MATERIALS: From December 2013 to July 2016, 117 stereotactic body radiation therapy-volumetric modulated arc therapy patients (100 lung, 15 spine, and 2 liver) underwent 602 EPID-based in vivo dose verification events...
April 1, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/28332864/effect-of-density-gradient-centrifugation-on-reactive-oxygen-species-in-human-semen
#20
Teppei Takeshima, Yasushi Yumura, Shinnosuke Kuroda, Takashi Kawahara, Hiroji Uemura, Akira Iwasaki
Density gradient centrifugation can separate motile sperm from immotile sperm and other cells for assisted reproduction, but may also remove antioxidants from seminal plasma, resulting in oxidative stress. Therefore, we investigated reactive oxygen species (ROS) concentrations and distribution in semen before and after density gradient centrifugation. We assessed semen volume, sperm concentration, sperm motility, and ROS levels before and after density gradient centrifugation (300 x g for 20 minutes) in 143 semen samples from 118 patients...
March 23, 2017: Systems Biology in Reproductive Medicine
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