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https://www.readbyqxmd.com/read/28527317/fully-automatic-segmentation-of-left-ventricular-anatomy-in-3-d-lge-mri
#1
Tanja Kurzendorfer, Christoph Forman, Michaela Schmidt, Christoph Tillmanns, Andreas Maier, Alexander Brost
The current challenge for electrophysiology procedures, targeting the left ventricle, is the localization and qualification of myocardial scar. Late gadolinium enhanced magnetic resonance imaging (LGE-MRI) is the current gold standard to visualize regions of myocardial infarction. Commonly, a stack of 2-D images is acquired of the left ventricle in short-axis orientation. Recently, 3-D LGE-MRI methods were proposed that continuously cover the whole heart with a high resolution within a single acquisition. The acquisition promises an accurate quantification of the myocardium to the extent of myocardial scarring...
May 8, 2017: Computerized Medical Imaging and Graphics: the Official Journal of the Computerized Medical Imaging Society
https://www.readbyqxmd.com/read/28526883/openspritzer-an-open-hardware-pressure-ejection-system-for-reliably-delivering-picolitre-volumes
#2
C J Forman, H Tomes, B Mbobo, R J Burman, M Jacobs, T Baden, J V Raimondo
The ability to reliably and precisely deliver picolitre volumes is an important component of biological research. Here we describe a high-performance, low-cost, open hardware pressure ejection system (Openspritzer), which can be constructed from off the shelf components. The device is capable of delivering minute doses of reagents to a wide range of biological and chemical systems. In this work, we characterise the performance of the device and compare it to a popular commercial system using two-photon fluorescence microscopy...
May 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28525405/making-the-connection-the-mental-health-needs-of-adolescents
#3
Sarah Pitts, Sara Forman
No abstract text is available yet for this article.
May 18, 2017: Current Opinion in Pediatrics
https://www.readbyqxmd.com/read/28518178/physical-function-and-exercise-training-in-older-patients-with-heart-failure
#4
REVIEW
Andrew J Stewart Coats, Daniel E Forman, Mark Haykowsky, Dalane W Kitzman, Amy McNeil, Tavis S Campbell, Ross Arena
Heart failure (HF) is a common end point for numerous cardiovascular conditions, including coronary artery disease, valvular disease, and hypertension. HF predominantly affects older individuals (aged ≥70 years), particularly those living in developed countries. The pathophysiological sequelae of HF progression have a substantial negative effect on physical function. Diminished physical function in older patients with HF, which is the result of combined disease-related and age-related effects, has important implications on health...
May 18, 2017: Nature Reviews. Cardiology
https://www.readbyqxmd.com/read/28515392/assessment-of-left-ventricular-function-and-mass-on-free-breathing-compressed-sensing-real-time-cine-imaging
#5
Tomoyuki Kido, Teruhito Kido, Masashi Nakamura, Kouki Watanabe, Michaela Schmidt, Christoph Forman, Teruhito Mochizuki
BACKGROUND: Compressed sensing (CS) cine magnetic resonance imaging (MRI) has the advantage of being inherently insensitive to respiratory motion. This study compared the accuracy of free-breathing (FB) CS and breath-hold (BH) standard cine MRI for left ventricular (LV) volume assessment.Methods and Results:Sixty-three patients underwent cine MRI with both techniques. Both types of images were acquired in stacks of 8 short-axis slices (temporal/spatial resolution, 41 ms/1.7×1.7×6 mm(3)) and compared for ejection fraction, end-diastolic and systolic volumes, stroke volume, and LV mass...
May 18, 2017: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/28512001/low-dose-inflammatory-potential-of-silica-particles-in-human-derived-thp-1-macrophage-cell-culture-studies-mechanism-and-effects-of-particle-size-and-iron
#6
Premshekharan Gayatri, Hongqiao Zhang, Kennedy Nguyen, Henry Jay Forman, Valerie Jean Leppert
Silica and iron are major constituents in ambient particulate matter, and iron is a common impurity in many engineered nanomaterials. The purpose of this work was to determine the pro-inflammatory and other biological effects and mechanism of particle size and iron presence under low dose, non-cytotoxic conditions that are likely to approximate actual exposure levels, in contrast with higher dose studies in which cytotoxicity occurs. Specifically, human-derived THP-1 macrophages were exposed to 1 μg/ml of pristine and iron-coated 50 nm and 2 μm engineered silica nanoparticles...
May 13, 2017: Chemico-biological Interactions
https://www.readbyqxmd.com/read/28510317/efflux-pumps-may-not-be-the-major-drivers-of-qac-resistance-in-methicillin-resistant-staphylococcus-aureus
#7
Megan C Jennings, Megan E Forman, Stephanie M Duggan, Kevin P C Minbiole, William M Wuest
Quaternary ammonium compounds (QACs) are commonly used antiseptics that are now known to be subject to bacterial resistance. The prevalence and mechanisms of such resistance, however, remain underexplored. We investigated a variety of QACs, including those with multicationic structures (multiQACs), and the resistance displayed by a variety of Staphylococcus aureus strains with and without genes encoding efflux pumps, the purported main driver of bacterial resistance in MRSA. Through MIC, kinetic, and efflux-based assays, we find that neither the qacR/qacA system present in S...
May 16, 2017: Chembiochem: a European Journal of Chemical Biology
https://www.readbyqxmd.com/read/28508887/an-evolutionary-switch-in-nd2-enables-src-kinase-regulation-of-nmda-receptors
#8
David P Scanlon, Alaji Bah, Mickaël Krzeminski, Wenbo Zhang, Heather L Leduc-Pessah, Yi Na Dong, Julie D Forman-Kay, Michael W Salter
The non-receptor tyrosine kinase Src is a key signalling hub for upregulating the function of N-methyl D-aspartate receptors (NMDARs). Src is anchored within the NMDAR complex via NADH dehydrogenase subunit 2 (ND2), a mitochondrially encoded adaptor protein. The interacting regions between Src and ND2 have been broadly identified, but the interaction between ND2 and the NMDAR has remained elusive. Here we generate a homology model of ND2 and dock it onto the NMDAR via the transmembrane domain of GluN1. This interaction is enabled by the evolutionary loss of three helices in bilaterian ND2 proteins compared to their ancestral homologues...
May 16, 2017: Nature Communications
https://www.readbyqxmd.com/read/28506284/the-invest-project-investigating-the-use-of-evidence-synthesis-in-the-design-and-analysis-of-clinical-trials
#9
Gemma L Clayton, Isabelle L Smith, Julian P T Higgins, Borislava Mihaylova, Benjamin Thorpe, Robert Cicero, Kusal Lokuge, Julia R Forman, Jayne F Tierney, Ian R White, Linda D Sharples, Hayley E Jones
BACKGROUND: When designing and analysing clinical trials, using previous relevant information, perhaps in the form of evidence syntheses, can reduce research waste. We conducted the INVEST (INVestigating the use of Evidence Synthesis in the design and analysis of clinical Trials) survey to summarise the current use of evidence synthesis in trial design and analysis, to capture opinions of trialists and methodologists on such use, and to understand any barriers. METHODS: Our sampling frame was all delegates attending the International Clinical Trials Methodology Conference in November 2015...
May 15, 2017: Trials
https://www.readbyqxmd.com/read/28505538/synthesis-and-pharmacological-evaluation-of-neurosteroid-photoaffinity-ligands
#10
Pavel Y Savechenkov, David C Chiara, Rooma Desai, Alexander T Stern, Xiaojuan Zhou, Alexis M Ziemba, Andrea L Szabo, Yinghui Zhang, Jonathan B Cohen, Stuart A Forman, Keith W Miller, Karol S Bruzik
Neuroactive steroids are potent positive allosteric modulators of GABAA receptors (GABAAR), but the locations of their GABAAR binding sites remain poorly defined. To discover these sites, we synthesized two photoreactive analogs of alphaxalone, an anesthetic neurosteroid targeting GABAAR, 11β-(4-azido-2,3,5,6-tetrafluorobenzoyloxy)allopregnanolone, (F4N3Bzoxy-AP) and 11-aziallopregnanolone (11-AziAP). Both photoprobes acted with equal or higher potency than alphaxalone as general anesthetics and potentiators of GABAAR responses, left-shifting the GABA concentration - response curve for human α1β3γ2 GABAARs expressed in Xenopus oocytes, and enhancing [(3)H]muscimol binding to α1β3γ2 GABAARs expressed in HEK293 cells...
April 21, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28503316/recovery-of-supraspinal-control-of-leg-movement-in-a-chronic-complete-flaccid-paraplegic-man-after-continuous-low-frequency-pelvic-nerve-stimulation-and-fes-assisted-training
#11
Marc Possover, Axel Forman
INTRODUCTION: More than 30 years ago, functional electrical stimulation (FES) was developed as an orthotic system to be used for rehabilitation for SCI patients. In the present case report, FES-assisted training was combined with continuous low-frequency stimulation of the pelvic somatic nerves in a SCI patient. CASE PRESENTATION: We report on unexpected findings in a 41-year-old man with chronic complete flaccid paraplegia, since he was 18 years old, who underwent spinal stem cell therapy and a laparoscopic implantation of neuroprosthesis (LION procedure) in the pelvic lumbosacral nerves...
2017: Spinal Cord Series and Cases
https://www.readbyqxmd.com/read/28494518/correlates-of-resistance-and-relapse-during-blinatumomab-therapy-for-relapsed-refractory-acute-lymphoblastic-leukemia
#12
Ibrahim Aldoss, Joo Song, Tracey Stiller, Tina Nguyen, Joycelynne Palmer, Margaret O'Donnell, Anthony S Stein, Guido Marcucci, Stephen Forman, Vinod Pullarkat
We retrospectively analyzed 65 patients with refractory/relapsed (r/r) ALL who were treated with blinatumomab for predictors of leukemia response as well as clinical patterns of relapse and resistance with particular focus on downregulation of CD19 expression and extramedullary disease (EM-ALL). The complete remission (CR) rate was 51%, and 15 (45%) responders underwent allogeneic hematopoietic cell transplantation (HCT) in CR. High leukemia burden (bone marrow blasts >50%) (P=0.02), history of prior EM-ALL (P=0...
May 11, 2017: American Journal of Hematology
https://www.readbyqxmd.com/read/28486480/exposure-to-preeclampsia-in-utero-affects-growth-from-birth-to-late-childhood-dependent-on-child-s-sex-and-severity-of-exposure-follow-up-of-a-nested-case-control-study
#13
Kristine Kjer Byberg, Knut Øymar, Geir Egil Eide, Michele R Forman, Pétur Benedikt Júlíusson
BACKGROUND AND OBJECTIVE: An adverse intrauterine environment may affect offspring growth and development. Our aim was to explore whether preeclampsia (PE) exposure in utero influences growth from birth to 13 years. METHODS: In a nested case-control study, 229 children were exposed to PE (mild/moderate: n = 164, severe: n = 54) and 385 were unexposed. Length/height and weight were abstracted from records at birth, 3 and 6 months, 1 and 4 years, and measured along with waist circumference and skinfolds at follow-up at 11/12 (girls/boys) and 13 years (both sexes)...
2017: PloS One
https://www.readbyqxmd.com/read/28483489/multi-walled-carbon-nanotubes-a-cytotoxicity-study-in-relation-to-functionalization-dose-and-dispersion
#14
Lulu Zhou, Henry Jay Forman, G Yi, Joseph Lunec
Chemical functionalization broadens carbon nanotube (CNT) applications, conferring new functions, but at the same time potentially altering toxicity. Although considerable experimental data related to CNT toxicity, at the molecular and cellular levels, have been reported, there is very limited information available for the corresponding mechanism involved (e.g. cell apoptosis and genotoxicity). The threshold dose for safe medical application in relation to both pristine and functionalized carbon nanotubes remains ambiguous...
May 5, 2017: Toxicology in Vitro: An International Journal Published in Association with BIBRA
https://www.readbyqxmd.com/read/28483281/preclinical-data-support-leveraging-cs1-chimeric-antigen-receptor-t-cell-therapy-for-systemic-light-chain-amyloidosis
#15
Michael Rosenzweig, Ryan Urak, Miriam Walter, Laura Lim, James F Sanchez, Amrita Krishnan, Stephen Forman, Xiuli Wang
BACKGROUND AIMS: Light chain amyloidosis (AL) is a protein deposition disorder that is a result of a plasma cell dyscrasia, similar to multiple myeloma (MM). Immunotherapy is an attractive approach because of the low burden of disease, but the optimal target for AL is unclear. CS1 and B-cell maturation antigen (BCMA) are two potential targets because they are expressed on normal plasma cells and MM cells. METHODS: We performed a prospective study evaluating bone marrow specimens of 20 patients with plasma cell diseases, 10 with AL and 10 with MM...
May 5, 2017: Cytotherapy
https://www.readbyqxmd.com/read/28472455/the-long-term-prognosis-for-live-birth-in-couples-initiating-fertility-treatments
#16
S S Malchau, A A Henningsen, A Loft, S Rasmussen, J Forman, A Nyboe Andersen, A Pinborg
STUDY QUESTION: What are the long-term chances of having a child for couples starting fertility treatments and how many conceive with ART, IUI and without treatment? SUMMARY ANSWER: Total 5-year live birthrates were strongly influenced by female age and ranged from 80% in women under 35-26% in women ≥40 years, overall, 14% of couples conceived naturally and one-third of couples starting treatments with intrauterine insemination delivered from that treatment. WHAT IS KNOWN ALREADY: Few studies report success rates in fertility treatments across a couple's complete fertility treatment history, across clinics, evaluating live births after insemination, ART and natural conceptions...
May 4, 2017: Human Reproduction
https://www.readbyqxmd.com/read/28460825/delivered-dose-can-be-a-better-predictor-of-rectal-toxicity-than-planned-dose-in-prostate-radiotherapy
#17
L E A Shelley, J E Scaife, M Romanchikova, K Harrison, J R Forman, A M Bates, D J Noble, R Jena, M A Parker, M P F Sutcliffe, S J Thomas, N G Burnet
BACKGROUND AND PURPOSE: For the first time, delivered dose to the rectum has been calculated and accumulated throughout the course of prostate radiotherapy using megavoltage computed tomography (MVCT) image guidance scans. Dosimetric parameters were linked with toxicity to test the hypothesis that delivered dose is a stronger predictor of toxicity than planned dose. MATERIAL AND METHODS: Dose-surface maps (DSMs) of the rectal wall were automatically generated from daily MVCT scans for 109 patients within the VoxTox research programme...
April 28, 2017: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/28455753/erratum-to-dehydroepiandrosterone-dhea-supplementation-results-in-supraphysiologic-dhea-s-serum-levels-and-progesterone-assay-interference-that-may-impact-clinical-management-in-ivf
#18
Jason M Franasiak, Semara Thomas, Susan Ng, Maria Fano, Andrew Ruiz, Richard T Scott, Eric J Forman
No abstract text is available yet for this article.
April 29, 2017: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/28451518/development-and-application-of-the-re-aim-quest-mixed-methods-framework-for-program-evaluation
#19
Jane Forman, Michele Heisler, Laura J Damschroder, Elizabeth Kaselitz, Eve A Kerr
To increase the likelihood of successful implementation of interventions and promote dissemination across real-world settings, it is essential to evaluate outcomes related to dimensions other than Effectiveness alone. Glasgow and colleagues' RE-AIM framework specifies four additional types of outcomes that are important to decision-makers: Reach, Adoption, Implementation (including cost), and Maintenance. To further strengthen RE-AIM, we propose integrating qualitative assessments in an expanded framework: RE-AIM Qualitative Evaluation for Systematic Translation (RE-AIM QuEST), a mixed methods framework...
June 2017: Preventive Medicine Reports
https://www.readbyqxmd.com/read/28434928/hypercvad-chemotherapy-in-mantle-cell-lymphoma-patients-is-associated-with-higher-rates-of-hematopoietic-progenitor-cell-mobilization-failure-despite-plerixafor-rescue
#20
Amandeep Salhotra, Yuan Shan, Ni-Chun Tsai, James F Sanchez, Ibrahim Aldoss, Haris Ali, Tanya Paris, Ricardo Spielberger, Thai M Cao, Auayporn Nademanee, Stephen J Forman, Robert Chen
Induction regimens for mantle cell lymphoma (MCL) can be categorized into highly intensive ones containing cytarabine and less intense regimens such as R (rituximab) CHOP or R-bendamustine. Prior publications have shown R-hyperCVAD can be associated with stem cell mobilization failures. However, those studies did not include the use of plerixafor as rescue for stem cell mobilization failure. We examined our database of 181 consecutive MCL patients from 2005 to 2015 who received upfront therapy with either R-hyperCVAD or less intense chemotherapy (R-bendamustine and R-CHOP only) regimens to assess impact of frontline chemotherapy on collection of hematopoietic cell progenitors prior to autologous stem cell transplant (ASCT)...
April 18, 2017: Biology of Blood and Marrow Transplantation
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