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https://www.readbyqxmd.com/read/28072798/reliability-and-safety-of-contra-lateral-oblique-view-for-interlaminar-epidural-needle-placement
#1
Richard Derby, Irina Melnik, Jongwoo Choi, Sang-Hoon Lee, Jeong-Eun Lee
Cord trauma is a risk with a cervical and thoracic interlaminar epidural approach to the epidural space. Intermittent lateral fluoroscopic imaging to detect needle depth is often cumbersome and may be difficult to interpret. In comparison, the contra-lateral oblique (CLO) fluoroscopic view is efficient and easy to interpret. However, the in vivo reliability and safety of this technique has not been formally investigated.The senior author collected fluoroscopic images on 278 consecutive patients undergoing an interlaminar epidural block at the T1-T2 level performed using a 17 gauge Tuohy needle...
January 2017: Pain Physician
https://www.readbyqxmd.com/read/28063722/concordance-of-two-approaches-in-monitoring-of-minimal-residual-disease-in-b-precursor-acute-lymphoblastic-leukemia-fusion-transcripts-and-leukemia-associated-immunophenotypes
#2
Ying-Jung Huang, Elaine Coustan-Smith, Hsiao-Wen Kao, Hsi-Che Liu, Shih-Hsiang Chen, Chih-Cheng Hsiao, Chao-Ping Yang, Tang-Her Jaing, Ting-Chi Yeh, Ming-Chung Kuo, Chang-Liang Lai, Chia-Hui Chang, Dario Campana, Der-Cherng Liang, Lee-Yung Shih
BACKGROUND: Real-time quantitative polymerase chain reaction (RQ-PCR) for fusion transcripts and flow cytometry for leukemia-specific markers are widely used for minimal residual disease (MRD) detection in acute lymphoblastic leukemia, but the relation between the results of either method is unclear. METHODS: Mononucleated cells from 108 bone marrow samples collected from 55 B-precursor acute lymphoblastic leukemia patients (30 with t(12;21)/ETV6-RUNX1, 16 with t(9;22)/BCR-ABL1 and nine with t(1;19)/TCF3-PBX1) were examined in tandem by RQ-PCR and six-color flow cytometry...
January 4, 2017: Journal of the Formosan Medical Association, Taiwan Yi Zhi
https://www.readbyqxmd.com/read/28041983/basic-discriminative-and-semantic-processing-in-patients-in-the-vegetative-and-minimally-conscious-state
#3
Helena Erlbeck, Ruben G L Real, Boris Kotchoubey, Donatella Mattia, Jakob Bargak, Andrea Kübler
Patients who survive injuries to the brain following accidents or diseases often acquire a disorder of consciousness (DOC). Assessment of the state of consciousness in these patients is difficult since they are usually incapable of reproducible motor movements. The application of event-related potentials (ERP) recorded via EEG constitutes one promising approach to complement the assessment of cognitive functions in DOC patients. For these assessments, a hierarchical approach was suggested which means that paradigms aiming at higher order ERPs are only presented if early responses were found...
December 29, 2016: International Journal of Psychophysiology
https://www.readbyqxmd.com/read/28029553/somatic-mutation-detection-using-various-targeted-detection-assays-in-paired-samples-of-circulating-tumor-dna-primary-tumor-and-metastases-from-patients-undergoing-resection-of-colorectal-liver-metastases
#4
Nick Beije, Jean C Helmijr, Marjolein J A Weerts, Corine M Beaufort, Matthew Wiggin, Andre Marziali, Cornelis Verhoef, Stefan Sleijfer, Maurice P H M Jansen, John W M Martens
Assessing circulating tumor DNA (ctDNA) is a promising method to evaluate somatic mutations from solid tumors in a minimally-invasive way. In a group of twelve metastatic colorectal cancer (mCRC) patients undergoing liver metastasectomy, from each patient DNA from cell-free DNA (cfDNA), the primary tumor, metastatic liver tissue, normal tumor-adjacent colon or liver tissue, and whole blood were obtained. Investigated was the feasibility of a targeted NGS approach to identify somatic mutations in ctDNA. This targeted NGS approach was also compared with NGS preceded by mutant allele enrichment using synchronous coefficient of drag alteration technology embodied in the OnTarget assay, and for selected mutations with digital PCR (dPCR)...
October 10, 2016: Molecular Oncology
https://www.readbyqxmd.com/read/28019671/a-novel-objective-method-for-assessing-high-contrast-spatial-resolution-in-ct-based-on-the-rayleigh-criterion
#5
Pu Zhang, Guoqing Wan, Fei Li, Xingdong Li, Wenli Liu, Guangzhi Wang
PURPOSE: In China, most quality assessments (QAs) of the high contrast resolution of medical computed tomography (CT) equipment is performed by subjective evaluation, which is simple but dependent on observer expertise. The purpose of this study was to compare the accuracy and degree of dispersion of evaluation results from observers with different expertise and to develop an objective, easily understandable new approach to minimize the error caused by the subjective nature of observer evaluation...
December 26, 2016: Medical Physics
https://www.readbyqxmd.com/read/28018274/time-series-analysis-of-embodied-interaction-movement-variability-and-complexity-matching-as-dyadic-properties
#6
Leonardo Zapata-Fonseca, Dobromir Dotov, Ruben Fossion, Tom Froese
There is a growing consensus that a fuller understanding of social cognition depends on more systematic studies of real-time social interaction. Such studies require methods that can deal with the complex dynamics taking place at multiple interdependent temporal and spatial scales, spanning sub-personal, personal, and dyadic levels of analysis. We demonstrate the value of adopting an extended multi-scale approach by re-analyzing movement time-series generated in a study of embodied dyadic interaction in a minimal virtual reality environment (a perceptual crossing experiment)...
2016: Frontiers in Psychology
https://www.readbyqxmd.com/read/28007839/predictability-of-genetic-interactions-from-functional-gene-modules
#7
Jonathan H Young, Edward M Marcotte
Characterizing genetic interactions is crucial to understanding cellular and organismal response to gene-level perturbations. Such knowledge can inform the selection of candidate disease therapy targets. Yet experimentally determining whether genes interact is technically non-trivial and time-consuming. High-fidelity prediction of different classes of genetic interactions in multiple organisms would substantially alleviate this experimental burden. Under the hypothesis that functionally-related genes tend to share common genetic interaction partners, we evaluate a computational approach to predict genetic interactions in Homo sapiens, Drosophila melanogaster, and Saccharomyces cerevisiae By leveraging knowledge of functional relationships between genes, we cross-validate predictions on known genetic interactions and observe high-predictive power of multiple classes of genetic interactions in all three organisms...
December 22, 2016: G3: Genes—Genomes—Genetics
https://www.readbyqxmd.com/read/27996264/characterizing-structural-complexity-in-disordered-carbons-from-the-slit-pore-to-atomistic-models
#8
Suresh K Bhatia
The reliable characterization of nanoporous carbons is critical to the design and optimization of their numerous applications; however, the vast majority of carbons in industrial use are highly disordered, with complex structures whose understanding has long challenged researchers. The idealized slit pore model represents the most commonly used approximation to a carbon nanopore; nevertheless, it has been only partially successful in predicting adsorption isotherms and fails significantly in predicting transport properties because of its inability to capture structural disorder and its effect on fluid accessibility...
December 20, 2016: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/27960313/integrating-enzymatic-self-assembly-and-mitochondria-targeting-for-selectively-killing-cancer-cells-without-acquired-drug-resistance
#9
Huaimin Wang, Zhaoqianqi Feng, Youzhi Wang, Rong Zhou, Zhimou Yang, Bing Xu
Targeting organelles by modulating the redox potential of mitochondria is a promising approach to kill cancer cells that minimizes acquired drug resistance. However, it lacks selectivity because mitochondria perform essential functions for (almost) all cells. We show that enzyme-instructed self-assembly (EISA), a bioinspired molecular process, selectively generates the assemblies of redox modulators (e.g., triphenyl phosphinium (TPP)) in the pericellular space of cancer cells for uptake, which allows selectively targeting the mitochondria of cancer cells...
December 14, 2016: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/27956148/ifrag-a-protein-protein-interface-prediction-server-based-on-sequence-fragments
#10
Javier Garcia-Garcia, Victòria Valls-Comamala, Emre Guney, David Andreu, Francisco J Muñoz, Narcis Fernandez-Fuentes, Baldo Oliva
Protein-protein interactions (PPIs) are crucial in many biological processes. The first step towards the molecular characterisation of PPIs implies the charting of their interfaces, that is, the surfaces mediating the interaction. To this end, we present here iFrag, a sequence-based computational method that infers possible interacting regions between two proteins by searching minimal common sequence fragments of the interacting protein pairs. By utilising the sequences of two interacting proteins (queries), iFrag derives a two-dimensional matrix computing a score for each pair of residues that relates to the presence of similar regions in interolog protein pairs...
December 10, 2016: Journal of Molecular Biology
https://www.readbyqxmd.com/read/27926773/associations-of-specific-postoperative-complications-with-outcomes-after-elective-colon-resection-a-procedure-targeted-approach-toward-surgical-quality-improvement
#11
John E Scarborough, Jessica Schumacher, K Craig Kent, Charles P Heise, Caprice C Greenberg
Importance: Numerous quality initiatives have been implemented in an effort to minimize the onus of postoperative complications on clinical and economic outcomes after major surgery. It is unknown which complications have the greatest overall effect on these outcomes. Objective: To quantify the associations of specific postoperative complications with outcomes after elective colon resection. Design, Setting, and Participants: Patients undergoing elective colon resection between January 1, 2012, and December 31, 2013, who were included in the Colectomy-Targeted American College of Surgeons National Surgical Quality Improvement Program were assessed for the development of specific types of postoperative complications...
December 7, 2016: JAMA Surgery
https://www.readbyqxmd.com/read/27908126/communication-multipole-approximations-of-distant-pair-energies-in-local-correlation-methods-with-pair-natural-orbitals
#12
Hans-Joachim Werner
The accuracy of multipole approximations for distant pair energies in local second-order Møller-Plesset perturbation theory (LMP2) as introduced by Hetzer et al. [Chem. Phys. Lett. 290, 143 (1998)] is investigated for three chemical reactions involving molecules with up to 92 atoms. Various iterative and non-iterative approaches are compared, using different energy thresholds for distant pair selection. It is demonstrated that the simple non-iterative dipole-dipole approximation, which has been used in several recent pair natural orbitals (PNO)-LMP2 and PNO-LCCSD (local coupled-cluster with singles and doubles) methods, may underestimate the distant pair energies by up to 50% and can lead to significant errors in relative energies, unless very tight thresholds are used...
November 28, 2016: Journal of Chemical Physics
https://www.readbyqxmd.com/read/27897128/defining-the-limits-of-endoscopic-access-to-internal-auditory-canal
#13
Adam Master, Mickie Hamiter, Maura Cosetti
OBJECTIVE: To quantify surgical access to the internal auditory canal (IAC) using an exclusively endoscopic transcanal approach (EETA) and investigate surgically relevant relationships with neurovascular and osseous landmarks of the temporal bone. MATERIALS AND METHODS: Anatomical dissection of two paired temporal bones and 15 unpaired temporal bones was performed using an exclusively endoscopic approach to IAC. The dissection proceeded until the cerebellopontine angle (CPA) could be accessed...
November 28, 2016: Journal of International Advanced Otology
https://www.readbyqxmd.com/read/27887873/neer-award-2017-a-rapid-method-for-detecting-propionibacterium-acnes-in-surgical-biopsy-specimens-from-the-shoulder
#14
Scott Holmes, Ana M Pena Diaz, George S Athwal, Kenneth J Faber, David B O'Gorman
BACKGROUND: Propionibacterium (P) acnes infection of the shoulder after arthroplasty is a common and serious complication. Current detection methods for P acnes involve anaerobic cultures that require prolonged incubation periods (typically 7-14 days). We have developed a polymerase chain reaction (PCR)-restriction fragment length polymorphism (RFLP) approach that sensitively and specifically identifies P acnes in tissue specimens within a 24-hour period. METHODS: Primers were designed to amplify a unique region of the 16S rRNA gene in P acnes that contained a unique HaeIII restriction enzyme site...
November 22, 2016: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/27884202/extending-colonic-mucosal-microbiome-analysis-assessment-of-colonic-lavage-as-a-proxy-for-endoscopic-colonic-biopsies
#15
Euan Watt, Matthew R Gemmell, Susan Berry, Mark Glaire, Freda Farquharson, Petra Louis, Graeme I Murray, Emad El-Omar, Georgina L Hold
BACKGROUND: Sequencing-based analysis has become a well-established approach to deciphering the composition of the gut microbiota. However, due to the complexity of accessing sufficient material from colonoscopic biopsy samples, most studies have focused on faecal microbiota analysis, even though it is recognised that differences exist between the microbial composition of colonic biopsies and faecal samples. We determined the suitability of colonic lavage samples to see if it had comparable microbial diversity composition to colonic biopsies as they are without the limitations associated with sample size...
November 25, 2016: Microbiome
https://www.readbyqxmd.com/read/27861202/novel-approaches-to-early-detection-of-endometrial-cancer
#16
Madhu Bagaria, Emily Shields, Jamie N Bakkum-Gamez
PURPOSE OF REVIEW: Detection of endometrial cancer at an early stage leads to better oncologic outcomes. To date, a screening test for endometrial cancer does not exist. RECENT FINDINGS: Evolving knowledge of molecular changes involved in endometrial cancer carcinogenesis paired with sensitive and high-throughput technological advancements are a promising combination that can be leveraged to detect tumor DNA and proteins. These molecular biomarkers can be identified in biospecimens collected via minimally invasive and noninvasive approaches...
February 2017: Current Opinion in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/27846853/dgca-a-comprehensive-r-package-for-differential-gene-correlation-analysis
#17
Andrew T McKenzie, Igor Katsyv, Won-Min Song, Minghui Wang, Bin Zhang
BACKGROUND: Dissecting the regulatory relationships between genes is a critical step towards building accurate predictive models of biological systems. A powerful approach towards this end is to systematically study the differences in correlation between gene pairs in more than one distinct condition. RESULTS: In this study we develop an R package, DGCA (for Differential Gene Correlation Analysis), which offers a suite of tools for computing and analyzing differential correlations between gene pairs across multiple conditions...
November 15, 2016: BMC Systems Biology
https://www.readbyqxmd.com/read/27826778/comparison-of-single-and-multi-incision-minimally-invasive-esophagectomy-mie-for-treating-esophageal-cancer-a-propensity-matched-study
#18
Jang-Ming Lee, Shang-Chi Chen, Shun-Mao Yang, Ying-Fan Tseng, Pei-Wen Yang, Pei-Ming Huang
OBJECTIVE: To compare the perioperative outcome of minimally invasive (MIE) esophagectomy performed with a single- or a multi-incision in treating esophageal cancer. METHOD: Patients with esophageal cancer who underwent MIE from 2006 to 2016 were evaluated. A 3-4-cm incision was created in both the thoracoscopic and the laparoscopic phases during the single-incision MIE procedures. A propensity-matched comparison was made between the two groups of patients. RESULTS: We analyzed a total of 48 pairs of patients with propensity-matched from the cohort of 360 patients undergoing MIE during 2006-2015...
November 8, 2016: Surgical Endoscopy
https://www.readbyqxmd.com/read/27824584/making-trillion-correlations-feasible-in-feature-grouping-and-selection
#19
Yiteng Zhai, Yew-Soon Ong, Ivor W Tsang
Today, modern databases with "Big Dimensionality" are experiencing a growing trend. Existing approaches that require the calculations of pairwise feature correlations in their algorithmic designs have scored miserably on such databases, since computing the full correlation matrix (i.e., square of dimensionality in size) is computationally very intensive (i.e., million features would translate to trillion correlations). This poses a notable challenge that has received much lesser attention in the field of machine learning and data mining research...
December 2016: IEEE Transactions on Pattern Analysis and Machine Intelligence
https://www.readbyqxmd.com/read/27797688/cannabis-involvement-and-nonsuicidal-self-injury-a-discordant-twin-approach
#20
Lauren R Few, Julia D Grant, Elliot C Nelson, Timothy J Trull, Richard A Grucza, Kathleen K Bucholz, Karin J H Verweij, Nicholas G Martin, Dixie J Statham, Pamela A F Madden, Andrew C Heath, Michael T Lynskey, Arpana Agrawal
OBJECTIVE: Cannabis use, particularly at an early age, has been linked to suicidal thoughts and behavior, but minimal work has examined the association between cannabis use and lifetime nonsuicidal self-injury (NSSI). The current study aims to characterize the overlap between lifetime and early cannabis use and NSSI and to examine genetic and environmental mechanisms of this association. METHOD: Adult male and female twins from the Australian Twin Registry (N = 9,583) were used to examine the odds of NSSI associated with lifetime cannabis use and early cannabis use (i...
November 2016: Journal of Studies on Alcohol and Drugs
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