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https://www.readbyqxmd.com/read/29786487/diffusion-weighted-mri-is-superior-to-pet-ct-in-predicting-survival-of-patients-undergoing-90-y-radioembolization-of-hepatic-metastases
#1
Alexandra Barabasch, Alexander Heinzel, Philipp Bruners, Nils A Kraemer, Christiane K Kuhl
Purpose To determine the relationship between diffusion-weighted (DW) liver MR images obtained 4-6 weeks after lobar yttrium 90 (90 Y) treatment and overall survival in comparison with PET/CT or established oncologic factors known to affect survival. Materials and Methods The institutional review board approved this prospective intraindividual comparative study in 36 consecutive patients (25 women) with liver-dominant metastases (20 colorectal, 14 breast, two other) (mean age, 60 years ± 10 [standard deviation]) who underwent fluorine 18 (18 F) fluorodeoxyglucose (FDG) PET/CT and DW MRI before and 4-6 weeks after 90 Y radioembolization...
May 21, 2018: Radiology
https://www.readbyqxmd.com/read/29786426/influence-of-enzyme-quantity-and-distribution-on-the-self-propulsion-of-non-janus-urease-powered-micromotors
#2
Tania Patiño, Natalia Feiner-Gracia, Xavier Arque, Albert Miguel-López, Anita Jannasch, Tom Stumpp, Erik Schäffer, Lorenzo Albertazzi, Samuel Sanchez
The use of enzyme catalysis to power micro and nanomachines offers unique features such as biocompatibility, versatili-ty and fuel bioavailability. Yet, the key parameters underlying the motion behavior of enzyme-powered motors are not completely understood. Here, we investigate the role of enzyme distribution and quantity on the generation of active mo-tion. Two different micromotor architectures based on either polystyrene (PS) or polystyrene coated with a rough silicon dioxide shell (PS@SiO2) were explored...
May 22, 2018: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/29785919/genomic-selection-in-dairy-cattle-simulated-populations
#3
Leonardo de Oliveira Seno, Diego Gomes Freire Guidolin, Rusbel Raul Aspilcueta-Borquis, Guilherme Batista do Nascimento, Thiago Bruno Ribeiro da Silva, Henrique Nunes de Oliveira, Danísio Prado Munari
Genomic selection is arguably the most promising tool for improving genetic gain in domestic animals to emerge in the last few decades, but is an expensive process. The aim of this study was to evaluate the economic impact related to the implementation of genomic selection in a simulated dairy cattle population. The software QMSim was used to simulate genomic and phenotypic data. The simulated genome contained 30 chromosomes with 100 cm each, 1666 SNPs markers equally spread and 266 QTLs randomly designated for each chromosome...
May 2018: Journal of Dairy Research
https://www.readbyqxmd.com/read/29785801/gold-surface-plasmon-crystal-structure-based-on-polystyrene-template-for-biosensor-application
#4
Min-Zhuo Cheng, Jing Zhang, Dequan Bao, Xiwei Huang
In this communication, we assembled ordered polystyrene (PS) microsphere array as a template with the drop-coating method, and the oxygen plasma was used to etch the template to adjust the spacing between the PS microspheres. Nano-triangular gold array and silver Nano-pyramid array were obtained by ion beam sputtering to deposit precious metal gold and silver. We observed the surface morphology of Au and Au/Ag composite films by scanning electron microscope and characterized the films by X-ray diffraction and Ultraviolet/visible light spectrophotometer...
May 21, 2018: Electrophoresis
https://www.readbyqxmd.com/read/29785299/thoracoscopic-segmentectomy-hybrid-approach-for-clinical-stage-i-non-small-cell-lung-cancer
#5
Koyo Shirahashi, Hirotaka Yamamoto, Mitsuyoshi Matsumoto, Yusaku Miyamaoto, Hiroyasu Komuro, Kiyoshi Doi, Hisashi Iwata
Background: Recently, minimally invasive surgical approaches have been developed, typified by video-assisted thoracic surgery (VATS). A meticulous surgical procedure to prevent local recurrence is required during segmentectomy for clinical stage I non-small-cell primary lung cancer. In this article, we demonstrated the validity of hybrid VATS segmentectomy. Methods: Of these 125 patients, 62 (49.6%) underwent intensively radical segmentectomy (RS). The remaining 63 (50...
April 2018: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/29784661/linaclotide-attenuates-visceral-organ-crosstalk-role-of-guanylate-cyclase-c-activation-in-reversing-bladder-colon-cross-sensitization
#6
Ehsan N Mohammadi, Casey O Ligon, Ada Silos-Santiago, Pei Ge, Caroline Kurtz, Carolyn Higgins, Gerhard Hannig, Beverley Greenwood-Van Meerveld
INTRODUCTION: Bladder pain syndrome (BPS) is poorly understood, however there is evidence of a female predominance and co-morbidity with irritable bowel syndrome (IBS). Here we test the hypothesis that linaclotide, a guanylate cyclase-C (GC-C) agonist approved for the treatment of IBS with constipation (IBS-C), may represent a novel therapeutic for BPS acting through a mechanism involving an inhibition of visceral organ cross sensitization. METHODS: In female rats, infusion of dilute protamine sulfate (PS) into the bladder was employed to induce bladder and colonic hypersensitivity...
May 21, 2018: Journal of Pharmacology and Experimental Therapeutics
https://www.readbyqxmd.com/read/29784641/intrinsic-apoptosis-circumvents-the-functional-decline-of-circulating-platelets-but-does-not-cause-the-storage-lesion
#7
Irina Pleines, Marion Lebois, Pradnya Gangatirkar, Amanda E Au, Rachael M Lane, Katya J Henley, Maria Kauppi, Jason Corbin, Ping Cannon, Jonathan Bernardini, Imala Alwis, Kate E Jarman, Sarah Ellis, Donald Metcalf, Shaun P Jackson, Simone M Schoenwaelder, Benjamin T Kile, Emma C Josefsson
The circulating life span of blood platelets is regulated by the pro-survival protein BCL-XL. It restrains the activity of BAK and BAX, the essential pro-death mediators of intrinsic apoptosis. Disabling the platelet intrinsic apoptotic pathway in mice by deleting BAK and BAX results in a doubling of platelet life span and concomitant thrombocytosis. Apoptotic platelets expose phosphatidylserine (PS) via a mechanism that is distinct from that driven by classical agonists. Whether there is any role for apoptotic PS in platelet function in vivo, however, is unclear...
May 21, 2018: Blood
https://www.readbyqxmd.com/read/29783706/effect-of-temperature-changes-on-serum-protein-adsorption-on-thermoresponsive-cell-culture-surfaces-monitored-by-a-quartz-crystal-microbalance-with-dissipation
#8
Jun Kobayashi, Yoshinori Arisaka, Nobuhiko Yui, Yoshikatsu Akiyama, Masayuki Yamato, Teruo Okano
Thermoresponsive cell-culture polystyrene (PS) surfaces that are grafted with poly( N -isopropylacrylamide) (PIPAAm) facilitate the cultivation of cells at 37 °C and the detachment of cultured cells as a sheet with an underlying extracellular matrix (ECM) by reducing the temperature. However, the ECM and cell detachment mechanisms are still unclear because the detachment of cells from thermoresponsive surfaces is governed by complex interactions among the cells/ECM/surface. To explore the dynamic behavior of serum protein adsorption/desorption, thermoresponsive surfaces that correspond to thermoresponsive tissue-culture PS dishes were formed on sensor chips for quartz crystal microbalance with dissipation (QCM-D) measurements...
May 18, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29783654/recent-progress-in-upconversion-photodynamic-therapy
#9
REVIEW
Hailong Qiu, Meiling Tan, Tymish Y Ohulchanskyy, Jonathan F Lovell, Guanying Chen
Photodynamic therapy (PDT) is a minimally invasive cancer modality that combines a photosensitizer (PS), light, and oxygen. Introduction of new nanotechnologies holds potential to improve PDT performance. Upconversion nanoparticles (UCNPs) offer potentially advantageous benefits for PDT, attributed to their distinct photon upconverting feature. The ability to convert near-infrared (NIR) light into visible or even ultraviolet light via UCNPs allows for the activation of nearby PS agents to produce singlet oxygen, as most PS agents absorb visible and ultraviolet light...
May 18, 2018: Nanomaterials
https://www.readbyqxmd.com/read/29783637/a-phosphatidylserine-source-of-docosahexanoic-acid-improves-neurodevelopment-and-survival-of-preterm-pigs
#10
Randal K Buddington, Victor V Chizhikov, Igor Y Iskusnykh, Helen J Sable, Jeffrey J Sable, Zade R Holloway, Tamar Blumenfeld Katzir, Marie van der Merwe, Taisiya Yakimkova, Karyl K Buddington, Yael Lifshitz, Shoshi Tessler, Ariel Gilbert
The amount, composition, and sources of nutrition support provided to preterm infants is critical for normal growth and development, and particularly for structural and functional neurodevelopment. Although omega-3 long chain polyunsaturated fatty acids (LC-PUFA), and particularly docosahexanoic acid (DHA), are considered of particular importance, results from clinical trials with preterm infants have been inconclusive because of ethical limitations and confounding variables. A translational large animal model is needed to understand the structural and functional responses to DHA...
May 18, 2018: Nutrients
https://www.readbyqxmd.com/read/29783627/characteristics-of-the-copper-zinc-superoxide-dismutase-of-a-hadal-sea-cucumber-paelopatides-sp-from-the-mariana-trench
#11
Yanan Li, Xue Kong, Jiawei Chen, Helu Liu, Haibin Zhang
Superoxide dismutases (SODs) are among the most important antioxidant enzymes and show great potential in preventing adverse effects during therapeutic trials. In the present study, cloning, expression, and characterization of a novel Cu,Zn superoxide dismutase (Ps-Cu,Zn-SOD) from a hadal sea cucumber ( Paelopatides sp.) were reported. Phylogenetic analysis showed that Ps-Cu,Zn-SOD belonged to a class of intracellular SOD. Its K m and V max were 0.0258 ± 0.0048 mM and 925.1816 ± 28.0430 units/mg, respectively...
May 18, 2018: Marine Drugs
https://www.readbyqxmd.com/read/29783203/mechanical-characterization-and-ion-release-of-bioactive-dental-composites-containing-calcium-phosphate-particles
#12
Livia C Natale, Marcela C Rodrigues, Yvette Alania, Marina D S Chiari, Leticia C C Boaro, Marycel Cotrim, Oscar Vega, Roberto R Braga
OBJECTIVE: to verify the effect of the addition of dicalcium phosphate dihydrate (DCPD) particles functionalized with di- or triethylene glycol dimethacrylate (DEGDMA or TEGDMA) on the degree of conversion (DC), post-gel shrinkage (PS), mechanical properties, and ion release of experimental composites. METHODS: Four composites were prepared containing a BisGMA/TEGDMA matrix and 60 vol% of fillers. The positive control contained only barium glass fillers, while in the other composites 15 vol% of the barium was replaced by DCPD...
May 18, 2018: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/29782332/detection-of-high-risk-thrombophilia-with-an-automated-global-test-the-coagulation-inhibitor-potential-assay
#13
Barbara Réger, Hajna Losonczy, Ágnes Nagy, Ágnes Péterfalvi, Réka Mózes, László Pótó, Nelli Farkas, Gábor L Kovács, Attila Miseta, Alizadeh Hussain, Orsolya Tóth
: The diagnosis of thrombophilia is a cost-consuming and time-consuming process, as each defect should be separately investigated. The Coagulation Inhibitor Potential (CIP) assay is a promising new global test, sensitive for most of the hereditary thrombophilias, developed for manual methodology. We adapt the original method to an optical coagulation analyser. By this automation, the test will be easier, faster and more precise, and it also allows carrying out 18 measurements simultaneously. The CIP assay was performed in 126 healthy subjects and 193 patients with different types of hereditary thrombophilia conditions...
May 17, 2018: Blood Coagulation & Fibrinolysis: An International Journal in Haemostasis and Thrombosis
https://www.readbyqxmd.com/read/29782325/early-emotional-attention-is-impacted-in-alzheimer-s-disease-an-eye-tracking-study
#14
Jessica Bourgin, Nathalie Guyader, Alan Chauvin, Alexandra Juphard, Mathilde Sauvée, Olivier Moreaud, Laetitia Silvert, Pascal Hot
Emotional deficits have been repetitively reported in Alzheimer's disease (AD) without clearly identifying how emotional processing is impaired in this pathology. This paper describes an investigation of early emotional processing, as measured by the effects of emotional visual stimuli on a saccadic task involving both pro (PS) and anti (AS) saccades. Sixteen patients with AD and 25 age-matched healthy controls were eye-tracked while they had to quickly move their gaze toward a positive, negative, or neutral image presented on a computer screen (in the PS condition) or away from the image (in the AS condition)...
May 16, 2018: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/29781832/gripping-and-anchoring-effects-on-the-mechanical-strengths-of-orthodontic-microimplants
#15
Chun-Ming Chen, Chun-Chan Ting, Huang-Chi Wang, Yu-Chuan Tseng
PURPOSE: The aim of this study was to evaluate the mechanical strengths in 5 different designs of orthodontic microimplants by analyzing their configuration of structure. MATERIALS AND METHODS: Thirty microimplants of 5 types (diameter 1.5 mm: type A, B, and C; diameter 1.3 mm: type D and E) were assessed. All microimplants were manually driven into the artificial bones at a 7-mm depth. The anchor area (AA), gripping area (GA), insertion torque (IT), Periotest value (PTV), and pullout strength (PS) were measured...
May 16, 2018: Implant Dentistry
https://www.readbyqxmd.com/read/29781501/photoinduced-interfacial-charge-separation-dynamics-in-zeolitic-imidazolate-framework
#16
Brian Pattengale, Jier Huang
Owing to their porous structure and tunable framework, zeolitic imidazolate frameworks (ZIFs) have garnered considerable attention as promising photocatalytic materials. However, little is known regarding their photophysical properties. In this work, we report the photoinduced charge separation dynamics in a ZIF-67 thin film through interfacial electron transfer (ET) to methylene blue (MB+) via ultrafast transient absorption spectroscopy. We show that the ET process occurs through two distinct pathways, including an ultrafast (<200 fs) process from the [CoII(mim)2] units located on the surface of ZIF-67 film that are directly in contact with MB+ and a relatively slower ET process with a 101...
May 21, 2018: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/29781295/impact-of-statin-use-on-recurrence-or-survival-after-surgical-curative-resection-of-non-small-cell-lung-cancer
#17
Tak Kyu Oh, Kwhanmien Kim, Sanghoon Jheon, Jaebong Lee, Sang-Hwan Do, Jung-Won Hwang, Hyo Jin Kim, In-Ae Song
Statins are known for their anticancer effects, and many studies have shown the effectiveness of statins for cancer prevention and improvement of cancer-related long-term oncologic outcome. However, their effectiveness on recurrence or survival of non-small cell lung cancer (NSCLC) after curative resection remains unknown. This was a retrospective cohort study that assessed the medical records of patients who were diagnosed with NSCLC and treated with curative resection at a tertiary care hospital between August 2003 and July 2012...
January 2018: Cancer Control: Journal of the Moffitt Cancer Center
https://www.readbyqxmd.com/read/29781181/effects-of-phosphatidylserine-containing-supported-lipid-bilayers-on-the-polarization-of-macrophages
#18
Hongxuan Quan, Yongjoon Kim, Hee Chul Park, Hyeong-Cheol Yang
Placement of dental implants initiates inflammatory foreign body response, in which macrophages play a central role and affect the subsequent tissue healing process such as bone formation. The purpose of this study was to fabricate phosphatidylserine (PS)-containing supported lipid bilayers (SLBs) on a titanium surface to regulate the polarization of macrophages, a critical factor that affects following tissue healing and regeneration. The fluorescent recovery after photobleaching (FRAP) images showed that the percentage of PS had a critical influence on the fluidity, and 20% PS had the highest fluidity...
May 20, 2018: Journal of Biomedical Materials Research. Part A
https://www.readbyqxmd.com/read/29779211/cutaneous-sarcoidosis-a-new-subset-in-the-spectrum-of-paraneoplastic-dermatoses
#19
M El-Khalawany, A Mosbeh, S Aboeldahab, S Ali
BACKGROUND: Sarcoidosis is a well-described disease that can be associated with various malignancies; however, this correlation is still not fully clarified. AIM: To determine the clinical and histological features, demographic characteristics, and prognosis of patients diagnosed with paraneoplastic sarcoidosis (PS). METHODS: This observational cohort prospective study included all patients diagnosed as cutaneous sarcoidosis. All patients were monitored for therapeutic response, prognosis, and any associated diseases or malignancies...
May 20, 2018: Clinical and Experimental Dermatology
https://www.readbyqxmd.com/read/29778773/effects-of-electronic-cigarette-liquid-solvents-propylene-glycol-and-vegetable-glycerin-on-user-nicotine-delivery-heart-rate-subjective-effects-and-puff-topography
#20
Tory R Spindle, Soha Talih, Marzena M Hiler, Nareg Karaoghlanian, Matthew S Halquist, Alison B Breland, Alan Shihadeh, Thomas Eissenberg
BACKGROUND: Electronic cigarettes (ECIGs) are a class of tobacco products that produce different effects (e.g., nicotine delivery), depending on the device, liquid, and behavioral factors. However, the influence of the two primary ECIG liquid solvents, propylene glycol (PG) and vegetable glycerin (VG), on ECIG acute effects is unknown. METHODS: Thirty ECIG-experienced, ≥12-h nicotine- abstinent participants completed four conditions consisting of two ECIG-use bouts (10 puffs, 30 s interpuff-interval) differing only by liquid PG:VG ratio (2PG:98VG, 20PG:80VG, 55PG:45VG, 100PG)...
May 1, 2018: Drug and Alcohol Dependence
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