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https://www.readbyqxmd.com/read/29346599/magnetic-resonance-imaging-guided-laser-interstitial-thermal-therapy-for-the-treatment-of-hypothalamic-hamartomas-a-retrospective-review
#1
David S Xu, Tsinsue Chen, Randall J Hlubek, Ruth E Bristol, Kris A Smith, Francisco A Ponce, John F Kerrigan, Peter Nakaji
BACKGROUND: Hypothalamic hamartomas (HH) are rare lesions associated with treatment-resistant epilepsy. Open surgery results in modest seizure control (about 50%) but has a significant associated morbidity. Radiosurgery is limited to a subset of patients due to latent therapeutic effects. Magnetic resonance imaging-guided laser interstitial thermal therapy (LITT) offers a novel minimally invasive option. OBJECTIVE: To evaluate a single center's outcomes for the LITT treatment of HH...
January 13, 2018: Neurosurgery
https://www.readbyqxmd.com/read/29303595/hybrid-lithographic-and-dna-directed-assembly-of-a-configurable-plasmonic-metamaterial-that-exhibits-electromagnetically-induced-transparency
#2
David B Litt, Matthew Jones, Mario Hentschel, Ying Wang, Sui Yang, Hyun Dong Ha, Xiang Zhang, A Paul Alivisatos
Metamaterials are architectures that interact with light in novel ways by virtue of symmetry manipulation, and have opened a window into studying unprecedented light-matter interactions. However, they are commonly fabricated via lithographic methods, are usually static structures, and are limited in how they can react to external stimuli. Here we show that by combining lithographic techniques with DNA-based self-assembly methods, we can construct responsive plasmonic metamaterials that exhibit the plasmonic analog of an effect known as electromagnetically induced transparency (EIT), which can dramatically change their spectra upon motion of their constituent parts...
January 5, 2018: Nano Letters
https://www.readbyqxmd.com/read/29300760/biological-invasion-of-oxeye-daisy-leucanthemum-vulgare-in-north-america-pre-adaptation-post-introduction-evolution-or-both
#3
Sonja Stutz, Patrik Mráz, Hariet L Hinz, Heinz Müller-Schärer, Urs Schaffner
Species may become invasive after introduction to a new range because phenotypic traits pre-adapt them to spread and become dominant. In addition, adaptation to novel selection pressures in the introduced range may further increase their potential to become invasive. The diploid Leucanthemum vulgare and the tetraploid L. ircutianum are native to Eurasia and have been introduced to North America, but only L. vulgare has become invasive. To investigate whether phenotypic differences between the two species in Eurasia could explain the higher abundance of L...
2018: PloS One
https://www.readbyqxmd.com/read/29289561/haemophilus-influenzae-type-b-hib-seroprevalence-and-current-epidemiology-in-england-and-wales
#4
Sarah Collins, David Litt, Rachael Almond, Jamie Findlow, Ezra Linley, Mary Ramsay, Ray Borrow, Shamez Ladhani
Introduction The introduction of the Hib conjugate vaccine in the United Kingdom resulted in a rapid decline in invasive Hib disease across all age groups. However, a resurgence in 2000-2002 prompted the introduction of additional control measures, including a routine 12-month booster in 2006. Here we describe results from a national serosurvey in children eligible for the 12-month booster and recent H. influenzae epidemiology in England and Wales. Methods A national serosurvey was performed to determine the prevalence of anti-polyribosyl-phosphate (anti-PRP) IgG antibodies in 1,000 residual samples from children up to 8 years of age in 2013-14...
December 28, 2017: Journal of Infection
https://www.readbyqxmd.com/read/29288992/the-effect-of-increased-intracranial-eeg-sampling-rates-in-clinical-practice
#5
Kathryn A Davis, Seth P Devries, Abba Krieger, Temenuzhka Mihaylova, Daniela Minecan, Brian Litt, Joost B Wagenaar, William C Stacey
OBJECTIVE: Recent research suggests that high frequency intracranial EEG (iEEG) may improve localization of epileptic networks. This study aims to determine whether recording macroelectrode iEEG with higher sampling rates improves seizure localization in clinical practice. METHODS: 14 iEEG seizures from 10 patients recorded with >2000 Hz sampling rate were downsampled to four sampling rates: 100, 200, 500, 1000 Hz. In the 56 seizures, seizure onset time and location was marked by 5 independent, blinded EEG experts...
November 16, 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/29210936/optical-coherence-tomography-and-histology-of-age-related-macular-degeneration-support-mitochondria-as-reflectivity-sources
#6
Katie M Litts, Yuhua Zhang, K Bailey Freund, Christine A Curcio
PURPOSE: Widespread adoption of optical coherence tomography has revolutionized the diagnosis and management of retinal disease. If the cellular and subcellular sources of reflectivity in optical coherence tomography can be identified, the value of this technology will be advanced even further toward precision medicine, mechanistic thinking, and molecular discovery. Four hyperreflective outer retinal bands are created by the exquisite arrangement of photoreceptors, Müller cells, retinal pigment epithelium, and Bruch membrane...
November 23, 2017: Retina
https://www.readbyqxmd.com/read/29208850/carotid-artery-stenosis-contralateral-to-acute-tandem-occlusion-an-independent-predictor-of-poor-clinical-outcome-after-mechanical-thrombectomy-with-concomitant-carotid-artery-stenting
#7
Volker Maus, Daniel Behme, Jan Borggrefe, Christoph Kabbasch, Fatih Seker, Cicek Hüseyin, Utako Birgit Barnikol, Leonard Leong Litt Yeo, Patrick Brouwer, Michael Söderman, Markus Möhlenbruch, Marios Nikos Psychogios, Thomas Liebig, Christian Dohmen, Gereon Rudolf Fink, Anastasios Mpotsaris
BACKGROUND AND PURPOSE: Cerebral ischemic strokes due to extra-/intracranial tandem occlusions (TO) of the anterior circulation are responsible for causing mechanical thrombectomy (MT). The impact of concomitant contralateral carotid stenosis (CCS) upon outcome remains unclear in this stroke subtype. METHODS: Retrospective analysis of prospectively collected data of 4 international stroke centers between 2011 and 2017. One hundred ninety-seven consecutive patients with anterior TO were treated with MT and acute carotid artery stenting (CAS)...
November 24, 2017: Cerebrovascular Diseases
https://www.readbyqxmd.com/read/29204838/volumetric-response-of-progressing-post-srs-lesions-treated-with-laser-interstitial-thermal-therapy
#8
Vivek B Beechar, Sujit S Prabhu, Dhiego Bastos, Jeffrey S Weinberg, R Jason Stafford, David Fuentes, Kenneth R Hess, Ganesh Rao
We analyzed volumetric response of metastatic brain tumors that progressed despite treatment with stereotactic radiosurgery (SRS) after treatment with laser interstitial thermal therapy (LITT). We retrospectively reviewed consecutive patients treated from 1/2012 to 10/2015 with LITT for metastatic brain tumors demonstrating progression after SRS. Volumes were quantified using MRI with contrast-enhanced T1-weighted (T1W) and fluid-attenuated inversion recovery (FLAIR). Fifty lesions from 36 patients were studied...
December 4, 2017: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/29192299/machine-learning-to-detect-signatures-of-disease-in-liquid-biopsies-a-user-s-guide
#9
Jina Ko, Steven N Baldassano, Po-Ling Loh, Konrad Kording, Brian Litt, David Issadore
New technologies that measure sparse molecular biomarkers from easily accessible bodily fluids (e.g. blood, urine, and saliva) are revolutionizing disease diagnostics and precision medicine. Microchip devices can measure more disease biomarkers with better sensitivity and specificity each year, but clinical interpretation of these biomarkers remains a challenge. Single biomarkers in 'liquid biopsy' often cannot accurately predict the state of a disease due to heterogeneity in phenotype and disease expression across individuals...
December 1, 2017: Lab on a Chip
https://www.readbyqxmd.com/read/29183959/stereotactic-eeg-guided-laser-interstitial-thermal-therapy-for-mesial-temporal-lobe-epilepsy
#10
James X Tao, Shasha Wu, Maureen Lacy, Sandra Rose, Naoum P Issa, Carina W Yang, Katherine E Dorociak, Maria Bruzzone, Jisoon Kim, Ahmad Daif, Jason Choi, Vernon L Towle, Peter C Warnke
OBJECTIVE: To determine the outcomes of combined stereo-electroencephalography-guided and MRI-guided stereotactic laser interstitial thermal therapy (LITT) in the treatment of patients with drug-resistant mesial temporal lobe epilepsy (mTLE). METHODS: We prospectively assessed the surgical and neuropsychological outcomes in 21 patients with medically refractory mTLE who underwent LITT at the University of Chicago Medical Center. We further compared the surgical outcomes in patients with and without mesial temporal sclerosis (MTS)...
November 28, 2017: Journal of Neurology, Neurosurgery, and Psychiatry
https://www.readbyqxmd.com/read/29180082/quantitative-volumetric-analysis-following-magnetic-resonance-guided-laser-interstitial-thermal-ablation-of-cerebellar-metastases
#11
Daniel Eichberg, Ryan VanDenBerg, Ricardo J Komotar, Michael E Ivan
BACKGROUND: Treating recurrent posterior fossa metastases after prior radiation therapy and surgical resection remains challenging. Magnetic resonance laser-induced thermal therapy (MR-LITT) is a promising treatment for recurrent lesions, but data regarding safety, efficacy, and post-ablational volume change in the posterior fossa is lacking. METHODS: All patients with recurrent posterior fossa metastatic lesions treated with LITT by the senior neurosurgeon were included in the study...
November 24, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/29178798/dissolution-of-monocrystalline-silicon-nanomembranes-and-their-use-as-encapsulation-layers-and-electrical-interfaces-in-water-soluble-electronics
#12
Yoon Kyeung Lee, Ki Jun Yu, Enming Song, Amir Barati Farimani, Flavia Vitale, Zhaoqian Xie, Younghee Yoon, Yerim Kim, Andrew Richardson, Haiwen Luan, Yixin Wu, Xu Xie, Timothy H Lucas, Kaitlyn Crawford, Yongfeng Mei, Xue Feng, Yonggang Huang, Brian Litt, Narayana R Aluru, Lan Yin, John A Rogers
The chemistry that governs the dissolution of device-grade, monocrystalline silicon nanomembranes into benign end products by hydrolysis serves as the foundation for fully eco/biodegradable classes of high performance electronics. This paper examines these processes in aqueous solutions with chemical compositions relevant to ground water and biofluids. The results show that the presence of Si(OH)4 and proteins in these solutions can slow the rates of dissolution and that ion specific effects associated with Ca2+ can significantly increase these rates...
November 27, 2017: ACS Nano
https://www.readbyqxmd.com/read/29159960/mapping-the-structural-and-functional-network-architecture-of-the-medial-temporal-lobe-using-7t-mri
#13
Preya Shah, Danielle S Bassett, Laura E M Wisse, John A Detre, Joel M Stein, Paul A Yushkevich, Russell T Shinohara, John B Pluta, Elijah Valenciano, Molly Daffner, David A Wolk, Mark A Elliott, Brian Litt, Kathryn A Davis, Sandhitsu R Das
Medial temporal lobe (MTL) subregions play integral roles in memory function and are differentially affected in various neurological and psychiatric disorders. The ability to structurally and functionally characterize these subregions may be important to understanding MTL physiology and diagnosing diseases involving the MTL. In this study, we characterized network architecture of the MTL in healthy subjects (n = 31) using both resting state functional MRI and MTL-focused T2-weighted structural MRI at 7 tesla...
November 20, 2017: Human Brain Mapping
https://www.readbyqxmd.com/read/29159017/gardening-and-age-related-weight-gain-results-from-a-cross-sectional-survey-of-denver-residents
#14
Jill S Litt, Jeffrey Richard Lambert, Deborah H Glueck
This study examined whether gardening modifies the association between age and body mass index (BMI). We used data from the Neighborhood Environments and Health Survey, which was conducted in Denver (N = 469) between 2006 and 2007. We fit two general linear mixed models. The base model had BMI in kg/m(2) as the outcome, and age, an indicator variable for non-gardening status and the age-by-non-gardening status interaction as predictors. The adjusted model included as covariates the potential confounders of education, ethnicity and self-reported health...
December 2017: Preventive Medicine Reports
https://www.readbyqxmd.com/read/29140463/anatomic-investigation-of-the-trajectory-for-stereotactic-laser-amygdalohippocampectomy
#15
Vanessa M Holanda, Abuzer Gungor, Serhat Baydin, Erik H Middlebrooks, Shabbar F Danish
BACKGROUND: Magnetic resonance imaging-guided laser interstitial thermal therapy (LITT) has emerged as a promising treatment for mesial temporal lobe epilepsy. Surgeons must understand the relevant anatomy that is traversed by the catheter and affected by ablation. OBJECTIVE: To study the anatomic structures crossed by the LITT catheter until it reaches the amygdala. METHODS: Three human cadaveric heads were implanted with catheters using a frameless stereotactic technique...
November 11, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/29123549/isolation-and-physiomorphological-characterization-of-escherichia-coli-o157-h7-infecting-bacteriophages-recovered-from-beef-cattle-operations
#16
Pushpinder Kaur Litt, Divya Jaroni
Bacteriophages, recovered from beef cattle environment and specifically targeting Escherichia coli O157:H7, were examined for their physiological and morphological characteristics. Degree of bacterial lysis and host range of isolated bacteriophages was determined against 55 isolates of E. coli O157:H7. Morphology of phages was examined under transmission electron microscope. Phage growth parameters, particularly rate of adsorption, rise period, latent period, and burst size were also determined. The stability of isolated phages was tested at acidic and alkaline pH, at high temperatures, and in cold storage...
2017: International Journal of Microbiology
https://www.readbyqxmd.com/read/29121272/chronic-cigarette-smoking-associates-directly-and-indirectly-with-self-reported-olfactory-alterations-analysis-of-the-2011-2014-national-health-and-nutrition-examination-survey-nhanes
#17
Sarah-Grace Glennon, Tania Huedo-Medina, Shristi Rawal, Howard J Hoffman, Mark D Litt, Valerie B Duffy
Introduction: Population-based studies show inconsistent effects of cigarette smoking on olfactory function. We aimed to identify direct and indirect associations between measures of smoking exposure/nicotine dependence and altered olfaction in a nationally-representative sample of adults. Methods: NHANES 2011-2014 (n=7,418) participants (mean age=57.8±12.2 years) self-reported olfaction and related health and demographic risks. Affirmative answers to three questions defined altered olfaction (olfactory problems in past year; worse ability since age 25; phantom smells)...
November 7, 2017: Nicotine & Tobacco Research: Official Journal of the Society for Research on Nicotine and Tobacco
https://www.readbyqxmd.com/read/29119424/health-literacy-assessment-in-adults-with-neurofibromatosis-electronic-and-short-form-measurement-using-fcchl-and-health-litt
#18
Vanessa L Merker, Sarah McDannold, Eric Riklin, Mojtaba Talaei-Khoei, Monica R Sheridan, Justin T Jordan, Scott R Plotkin, Ana-Maria Vranceanu
Determining health literacy level is an important prerequisite for effective patient education. We assessed multiple dimensions of health literacy and sociodemographic predictors of health literacy in patients with neurofibromatosis. In 86 individuals with a confirmed diagnosis of neurofibromatosis 1 (NF1), neurofibromatosis 2 (NF2), or schwannomatosis, we assessed health literacy status using two HL tools-the adapted functional, communicative, and critical health literacy scale (adapted FCCHL) and health literacy assessment using talking touchscreen technology (Health LiTT)...
November 8, 2017: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/29111296/a-neurosurgeon-s-view-laser-interstitial-thermal-therapy-of-mesial-temporal-lobe-structures
#19
Yarema B Bezchlibnyk, Jon T Willie, Robert E Gross
Stereotactic laser ablation of mesial temporal structures is a promising new surgical intervention for patients with mesial temporal lobe epilepsy (MTLE). Since this procedure was first used to treat MTLE in 2010, the literature contains reports of 37 patients that underwent MR-guided stereotactic laser amygdalohippocampotomy (SLAH) using Laser Interstitial Thermal Therapy (LITT) with at least 1year of follow-up. This early body of data suggests that SLAH is a safe and effective treatment for MTLE in properly selected patients...
October 27, 2017: Epilepsy Research
https://www.readbyqxmd.com/read/29105070/standards-for-data-acquisition-and-software-based-analysis-of-in%C3%A2-vivo-electroencephalography-recordings-from-animals-a-task1-wg5-report-of-the-aes-ilae-translational-task-force-of-the-ilae
#20
Jason T Moyer, Vadym Gnatkovsky, Tomonori Ono, Jakub Otáhal, Joost Wagenaar, William C Stacey, Jeffrey Noebels, Akio Ikeda, Kevin Staley, Marco de Curtis, Brian Litt, Aristea S Galanopoulou
Electroencephalography (EEG)-the direct recording of the electrical activity of populations of neurons-is a tremendously important tool for diagnosing, treating, and researching epilepsy. Although standard procedures for recording and analyzing human EEG exist and are broadly accepted, there are no such standards for research in animal models of seizures and epilepsy-recording montages, acquisition systems, and processing algorithms may differ substantially among investigators and laboratories. The lack of standard procedures for acquiring and analyzing EEG from animal models of epilepsy hinders the interpretation of experimental results and reduces the ability of the scientific community to efficiently translate new experimental findings into clinical practice...
November 2017: Epilepsia
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