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M. Liberman

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https://www.readbyqxmd.com/read/28521479/association-between-non-melanoma-and-melanoma-skin-cancer-rates-vitamin-d-and-latitude
#1
Miguel Rivas, Elisa Rojas, Gloria M Calaf, Marcela Barberán, Claudio Liberman, Marcelo De Paula Correa
Vitamin D synthesis takes place in the skin due to solar ultraviolet-B (UVB) radiation. Several studies have shown the association between low sun exposure, non-melanoma skin cancer (NMSC) and a lack of vitamin D synthesis. Since such synthesis in the body depends on the exposure of the skin to solar UVB radiation (290-320 nm), experimental measurements of this type of solar radiation are important. Tarapaca University in Arica, Chile, established a solar UV radiation laboratory in 2006 and since then this laboratory has performed systematic experimental solar UVB measurements using a calibrated biometer instrument...
May 2017: Oncology Letters
https://www.readbyqxmd.com/read/28503234/error-reporting-from-the-da-vinci-surgical-system-in-robotic-surgery-a-canadian-multispecialty-experience-at-a-single-academic-centre
#2
Emad Rajih, Côme Tholomier, Beatrice Cormier, Vanessa Samouëlian, Thomas Warkus, Moishe Liberman, Hugues Widmer, Jean-Baptiste Lattouf, Abdullah M Alenizi, Malek Meskawi, Roger Valdivieso, Pierre-Alain Hueber, Pierre I Karakewicz, Assaad El-Hakim, Kevin C Zorn
INTRODUCTION: The goal of the study is to evaluate and report on the third-generation da Vinci surgical (Si) system malfunctions. METHODS: A total of 1228 robotic surgeries were performed between January 2012 and December 2015 at our academic centre. All cases were performed by using a single, dual console, four-arm, da Vinci Si robot system. The three specialties included urology, gynecology, and thoracic surgery. Studied outcomes included the robotic surgical error types, immediate consequences, and operative side effects...
May 2017: Canadian Urological Association Journal, Journal de L'Association des Urologues du Canada
https://www.readbyqxmd.com/read/28450351/prospective-study-of-adenosine-on-atrioventricular-nodal-conduction-in-pediatric-and-young-adult-patients-after-heart-transplant
#3
Jonathan N Flyer, Warren A Zuckerman, Marc E Richmond, Brett R Anderson, Tamar G Mendelsberg, Jennie M McAllister, Leonardo Liberman, Linda J Addonizio, Eric S Silver
Background -Supraventricular tachycardia (SVT) is common after heart transplant. Adenosine, the standard therapy for treating SVT in children and adults without transplant, is relatively contraindicated post-transplant due to a presumed risk of prolonged atrioventricular (AV) block in denervated hearts. This study tested whether adenosine caused prolonged asystole after transplant and if it was effective in blocking AV nodal conduction in these patients. Methods -This was a single center prospective clinical study including healthy heart transplant recipients ages 6 months - 25 years presenting for routine cardiac catheterization during 2015 - 2016...
April 27, 2017: Circulation
https://www.readbyqxmd.com/read/28444496/incidence-of-incisional-hernia-in-the-specimen-extraction-site-for-laparoscopic-colorectal-surgery-systematic-review-and-meta-analysis
#4
Lawrence Lee, Maria Abou-Khalil, Sender Liberman, Marylise Boutros, Gerald M Fried, Liane S Feldman
INTRODUCTION: The incidence of incisional hernia(IH) may be affected by the choice of specimen extraction incision. The objective of this study was to perform a systematic review and meta-analysis comparing the incidence of IH after midline and off-midline incisions in patients undergoing laparoscopic colorectal surgery. METHODS: A systematic search was performed according to PRISMA guidelines to identify all comparative studies from January 1991-August 2016 on the incidence of IH after midline and off-midline(transverse or Pfannenstiel) incisions in patients undergoing laparoscopic colorectal surgery...
April 25, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/28404217/children-s-expectations-about-conventional-and-moral-behaviors-of-ingroup-and-outgroup-members
#5
Zoe Liberman, Lauren H Howard, Nathan M Vasquez, Amanda L Woodward
Although children demonstrate robust social preferences for ingroup members early in ontogeny, it is not yet clear whether these preferences are based on children generally liking people who are more familiar or on children holding specific biased beliefs about people in their ingroup as compared with people in their outgroup. Here, we investigated the origins of humans' propensity to link ingroup members with positive behaviors and outgroup members with negative behaviors by asking whether linguistic group membership influences children's expectations of how people will act...
April 9, 2017: Journal of Experimental Child Psychology
https://www.readbyqxmd.com/read/28385884/classification-of-high-grade-glioma-into-tumor-and-nontumor-components-using-support-vector-machine
#6
D T Blumenthal, M Artzi, G Liberman, F Bokstein, O Aizenstein, D Ben Bashat
BACKGROUND AND PURPOSE: Current imaging assessment of high-grade brain tumors relies on the Response Assessment in Neuro-Oncology criteria, which measure gross volume of enhancing and nonenhancing lesions from conventional MRI sequences. These assessments may fail to reliably distinguish tumor and nontumor. This study aimed to classify enhancing and nonenhancing lesion areas into tumor-versus-nontumor components. MATERIALS AND METHODS: A total of 140 MRI scans obtained from 32 patients with high-grade gliomas and 6 patients with brain metastases were included...
April 6, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28367981/cochlear-gene-therapy-with-ancestral-aav-in-adult-mice-complete-transduction-of-inner-hair-cells-without-cochlear-dysfunction
#7
Jun Suzuki, Ken Hashimoto, Ru Xiao, Luk H Vandenberghe, M Charles Liberman
The use of viral vectors for inner ear gene therapy is receiving increased attention for treatment of genetic hearing disorders. Most animal studies to date have injected viral suspensions into neonatal ears, via the round window membrane. Achieving transduction of hair cells, or sensory neurons, throughout the cochlea has proven difficult, and no studies have been able to efficiently transduce sensory cells in adult ears while maintaining normal cochlear function. Here, we show, for the first time, successful transduction of all inner hair cells and the majority of outer hair cells in an adult cochlea via virus injection into the posterior semicircular canal...
April 3, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28253231/baseline-prevalence-of-birth-defects-associated-with-congenital-zika-virus-infection-massachusetts-north-carolina-and-atlanta-georgia-2013-2014
#8
Janet D Cragan, Cara T Mai, Emily E Petersen, Rebecca F Liberman, Nina E Forestieri, Alissa C Stevens, Augustina Delaney, April L Dawson, Sascha R Ellington, Carrie K Shapiro-Mendoza, Julie E Dunn, Cathleen A Higgins, Robert E Meyer, Tonya Williams, Kara N D Polen, Kim Newsome, Megan Reynolds, Jennifer Isenburg, Suzanne M Gilboa, Dana M Meaney-Delman, Cynthia A Moore, Coleen A Boyle, Margaret A Honein
Zika virus infection during pregnancy can cause serious brain abnormalities, but the full range of adverse outcomes is unknown (1). To better understand the impact of birth defects resulting from Zika virus infection, the CDC surveillance case definition established in 2016 for birth defects potentially related to Zika virus infection* (2) was retrospectively applied to population-based birth defects surveillance data collected during 2013-2014 in three areas before the introduction of Zika virus (the pre-Zika years) into the World Health Organization's Region of the Americas (Americas) (3)...
March 3, 2017: MMWR. Morbidity and Mortality Weekly Report
https://www.readbyqxmd.com/read/28221030/control-of-grafting-density-and-distribution-in-graft-polymers-by-living-ring-opening-metathesis-copolymerization
#9
Tzu-Pin Lin, Alice B Chang, Hsiang-Yun Chen, Allegra L Liberman-Martin, Christopher M Bates, Matthew J Voegtle, Christina A Bauer, Robert H Grubbs
Control over polymer sequence and architecture is crucial to both understanding structure-property relationships and designing functional materials. In pursuit of these goals, we developed a new synthetic approach that enables facile manipulation of the density and distribution of grafts in polymers via living ring-opening metathesis polymerization (ROMP). Discrete endo,exo-norbornenyl dialkylesters (dimethyl DME, diethyl DEE, di-n-butyl DBE) were strategically designed to copolymerize with a norbornene-functionalized polystyrene (PS), polylactide (PLA), or polydimethylsiloxane (PDMS) macromonomer mediated by the third-generation metathesis catalyst (G3)...
March 3, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28145042/safety-of-catheter-directed-thrombolysis-for-massive-and-submassive-pulmonary-embolism-results-of-a-multicenter-registry-and-meta-analysis
#10
Tyler L Bloomer, Georges E El-Hayek, Michael C McDaniel, Breck C Sandvall, Henry A Liberman, Chandan M Devireddy, Gautam Kumar, Pete P Fong, Wissam A Jaber
OBJECTIVES: To evaluate the safety and efficacy of catheter-directed thrombolysis (CDT) in the treatment of acute pulmonary embolism (PE). BACKGROUND: The use of CDT for the treatment of acute submassive and massive PE is increasing in frequency. However, its safety and efficacy have not been well elucidated. METHODS: This study is made of two parts: one is a two-center registry of acute PE patients treated with CDT. The safety outcome evaluated was any major complication including fatal, intracranial (ICH), intraocular, or retroperitoneal hemorrhage or any overt bleeding requiring transfusion or surgical repair...
February 1, 2017: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/28087419/cochlear-synaptopathy-in-acquired-sensorineural-hearing-loss-manifestations-and-mechanisms
#11
REVIEW
M Charles Liberman, Sharon G Kujawa
Common causes of hearing loss in humans - exposure to loud noise or ototoxic drugs and aging - often damage sensory hair cells, reflected as elevated thresholds on the clinical audiogram. Recent studies in animal models suggest, however, that well before this overt hearing loss can be seen, a more insidious, but likely more common, process is taking place that permanently interrupts synaptic communication between sensory inner hair cells and subsets of cochlear nerve fibers. The silencing of affected neurons alters auditory information processing, whether accompanied by threshold elevations or not, and is a likely contributor to a variety of perceptual abnormalities, including speech-in-noise difficulties, tinnitus and hyperacusis...
June 2017: Hearing Research
https://www.readbyqxmd.com/read/28077455/symptomatic-carotid-occlusion-is-frequently-associated-with-microembolization
#12
Ava L Liberman, Ali Zandieh, Caitlin Loomis, Jonathan M Raser-Schramm, Christina A Wilson, Jose Torres, Koto Ishida, Swaroop Pawar, Rebecca Davis, Michael T Mullen, Steven R Messé, Scott E Kasner, Brett L Cucchiara
BACKGROUND AND PURPOSE: Symptomatic carotid artery disease is associated with significant morbidity and mortality. The pathophysiologic mechanisms of cerebral ischemia among patients with carotid occlusion remain underexplored. METHODS: We conducted a prospective observational cohort study of patients hospitalized within 7 days of ischemic stroke or transient ischemic attack because of ≥50% carotid artery stenosis or occlusion. Transcranial Doppler emboli detection was performed in the middle cerebral artery ipsilateral to the symptomatic carotid...
February 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/27891649/control-of-arabidopsis-lateral-root-primordium-boundaries-by-myb36
#13
María Fernández-Marcos, Bénédicte Desvoyes, Concepción Manzano, Louisa M Liberman, Philip N Benfey, Juan C Del Pozo, Crisanto Gutierrez
Root branching in plants relies on the de novo formation of lateral roots. These are initiated from founder cells, triggering new formative divisions that generate lateral root primordia (LRP). The LRP size and shape depends on the balance between positive and negative signals that control cell proliferation. The mechanisms controlling proliferation potential of LRP cells remains poorly understood. We found that Arabidopsis thaliana MYB36, which have been previously shown to regulate genes required for Casparian strip formation and the transition from proliferation to differentiation in the primary root, plays a new role in controlling LRP development at later stages...
January 2017: New Phytologist
https://www.readbyqxmd.com/read/27857212/gr-independent-down-modulation-on-gm-csf-bone-marrow-derived-dendritic-cells-by-the-selective-glucocorticoid-receptor-modulator-compound-a
#14
Andres E Barcala Tabarrozzi, Luz Andreone, Julie Deckers, Carla N Castro, María L Gimeno, Laura Ariolfo, Paula M Berguer, María Antunica-Noguerol, Ana C Liberman, Sabine Vettorazzi, Jan P Tuckermann, Karolien De Bosscher, Marcelo J Perone
Dendritic cells (DC) initiate the adaptive immune response. Glucocorticoids (GCs) down-modulate the function of DC. Compound A (CpdA, (2-(4-acetoxyphenyl)-2-chloro-N-methyl-ethylammonium chloride) is a plant-derived GR-ligand with marked dissociative properties. We investigated the effects of CpdA on in vitro generated GM-CSF-conditioned bone marrow-derived DC (BMDC). CpdA-exposed BMDC exhibited low expression of cell-surface molecules and diminution of the release of proinflammatory cytokines upon LPS stimulation; processes associated with BMDC maturation and activation...
November 18, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27618300/toward-a-differential-diagnosis-of-hidden-hearing-loss-in-humans
#15
M Charles Liberman, Michael J Epstein, Sandra S Cleveland, Haobing Wang, Stéphane F Maison
Recent work suggests that hair cells are not the most vulnerable elements in the inner ear; rather, it is the synapses between hair cells and cochlear nerve terminals that degenerate first in the aging or noise-exposed ear. This primary neural degeneration does not affect hearing thresholds, but likely contributes to problems understanding speech in difficult listening environments, and may be important in the generation of tinnitus and/or hyperacusis. To look for signs of cochlear synaptopathy in humans, we recruited college students and divided them into low-risk and high-risk groups based on self-report of noise exposure and use of hearing protection...
2016: PloS One
https://www.readbyqxmd.com/read/27570826/type-ii-cochlear-ganglion-neurons-do-not-drive-the-olivocochlear-reflex-re-examination-of-the-cochlear-phenotype-in-peripherin-knock-out-mice
#16
Stéphane Maison, Leslie D Liberman, M Charles Liberman
The cochlear nerve includes a small population of unmyelinated sensory fibers connecting outer hair cells to the brain. The functional role of these type II afferent neurons is controversial, because neurophysiological data are sparse. A recent study (Froud et al., 2015) reported that targeted deletion of peripherin, a type of neurofilament, eliminated type II afferents and inactivated efferent feedback to the outer hair cells, thereby suggesting that type II afferents were the sensory drive to this sound-evoked, negative-feedback reflex, the olivocochlear pathway...
July 2016: ENeuro
https://www.readbyqxmd.com/read/27476586/patients-with-poor-baseline-walking-capacity-are-most-likely-to-improve-their-functional-status-with-multimodal-prehabilitation
#17
Enrico M Minnella, Rashami Awasthi, Chelsia Gillis, Julio F Fiore, A Sender Liberman, Patrick Charlebois, Barry Stein, Guillaume Bousquet-Dion, Liane S Feldman, Francesco Carli
BACKGROUND: Evidence suggests that multimodal prehabilitation programs comprising interventions directed at physical activity, nutrition, and anxiety coping can improve functional recovery after colorectal cancer operations; however, such programs may be more clinically meaningful and cost-effective if targeted to specific subgroups. This study aimed to estimate the extent to which patients with poor baseline functional capacity improve their functional capacity. METHODS: Data for 106 participants enrolled in a multimodal, prehabilitation program before colorectal operations were analyzed...
October 2016: Surgery
https://www.readbyqxmd.com/read/27410544/broadband-optical-switch-based-on-liquid-crystal-dynamic-scattering
#18
M W Geis, P J Bos, V Liberman, M Rothschild
This work demonstrates a novel broadband optical switch, based on dynamic-scattering effect in liquid crystals (LCs). Dynamic-scattering-mode technology was developed for display applications over four decades ago, but was displaced in favor of the twisted-nematic LCs. However, with the recent development of more stable LCs, dynamic scattering provides advantages over other technologies for optical switching. We demonstrate broadband polarization-insensitive attenuation of light directly passing thought the cell by 4 to 5 orders of magnitude at 633 nm...
June 27, 2016: Optics Express
https://www.readbyqxmd.com/read/27384746/significant-cooperativity-between-ruthenium-and-silicon-in-catalytic-transformations-of-an-isocyanide
#19
Mark C Lipke, Allegra L Liberman-Martin, T Don Tilley
Complexes [PhBP3]RuH(η(3)-H2SiRR') (RR' = Me,Ph, 1a; RR' = Ph2, 1b; RR' = Et2, 1c) react with XylNC to form carbene complexes [PhBP3]Ru(H)═[C(H)(N(Xyl)(η(2)-H-SiRR'))] (2a-c; previously reported for 2a,b). Reactions of 1a-c with XylNC were further investigated to assess how metal complexes with multiple M-H-Si bonds can mediate transformations of unsaturated substrates. Complex 2a eliminates an N-methylsilacycloindoline product (3a) that results from hydrosilylation, hydrogenation, and benzylic C-H activation of XylNC...
August 3, 2016: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/27324650/long-range-wetting-transparency-on-top-of-layered-metal-dielectric-substrates
#20
M A Noginov, Yuri A Barnakov, Vladimir Liberman, Srujana Prayakarao, Carl E Bonner, Evgenii E Narimanov
It has been recently shown that scores of physical and chemical phenomena (including spontaneous emission, scattering and Förster energy transfer) can be controlled by nonlocal dielectric environments provided by metamaterials with hyperbolic dispersion and simpler metal/dielectric structures. At this time, we have researched van der Waals interactions and experimentally studied wetting of several metallic, dielectric and composite multilayered substrates. We have found that the wetting angle of water on top of MgF2 is highly sensitive to the thickness of the MgF2 layer and the nature of the underlying substrate that could be positioned as far as ~100 nm beneath the water/MgF2 interface...
June 21, 2016: Scientific Reports
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