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https://www.readbyqxmd.com/read/29151618/heterofunctional-poly-ethylene-glycol-peg-macroinitiator-enabling-controlled-synthesis-of-abc-triblock-copolymers
#1
Lies A L Fliervoet, Marzieh Najafi, Mathew Hembury, Tina Vermonden
ABC triblock copolymers with a poly(ethylene glycol) (PEG) midblock have attractive properties for biomedical applications because of PEG's favorable properties regarding biocompatibility and hydrophilicity. However, easy strategies to synthesize polymers containing a PEG midblock are limited. In this study, the successful synthesis of a heterofunctional PEG macroinitiator containing both an azoinitiator and an atom transfer radical polymerization (ATRP) initiator is demonstrated. This novel PEG macroinitiator allows the development of elegant synthesis routes for PEG midblock-containing ABC copolymers that does not require protection of initiating sites or polymer end-group postmodification...
November 14, 2017: Macromolecules
https://www.readbyqxmd.com/read/29143853/sex-specific-risk-assessment-of-pfhxs-using-a-physiologically-based-pharmacokinetic-model
#2
Sook-Jin Kim, Hwajin Shin, Yong-Bok Lee, Hea-Young Cho
Perfluorohexanesulfonate (PFHxS), which belongs to the group of perfluoroalkyl and polyfluoroalkyl substances (PFASs), has been extensively used in industry and subsequently detected in the environment. Its use may be problematic, as PFHxS is known to induce neuronal cell death, and has been associated with early onset menopause in women and with attention deficit/hyperactivity disorder. Due to these impending issues, the aim of this study is to develop and evaluate a physiologically based pharmacokinetic (PBPK) model for PFHxS in male and female rats, and apply this to a human health risk assessment...
November 16, 2017: Archives of Toxicology
https://www.readbyqxmd.com/read/29137749/exceptionally-high-cavitation-erosion-and-corrosion-resistance-of-a-high-entropy-alloy
#3
R B Nair, H S Arora, Sundeep Mukherjee, S Singh, H Singh, H S Grewal
Cavitation erosion and corrosion of structural materials are serious concerns for marine and offshore industries. Durability and performance of marine components are severely impaired due to degradation from erosion and corrosion. Utilization of advanced structural materials can play a vital role in limiting such degradation. High entropy alloys (HEAs) are a relatively new class of advanced structural materials with exceptional properties. In the present work, we report on the cavitation erosion behavior of Al0...
March 2018: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/29137619/percutaneous-medial-hemi-epiphysiodesis-using-a-transphyseal-screw-for-caput-valgum-associated-with-developmental-dysplasia-of-the-hip
#4
Chang Ho Shin, Wan Kee Hong, Doo Jae Lee, Won Joon Yoo, In Ho Choi, Tae-Joon Cho
BACKGROUND: The purpose of this study was to evaluate the radiologic outcome of percutaneous medial hemi-epiphysiodesis using a transphyseal screw for the management of caput valgum associated with developmental dysplasia of the hip (DDH). METHODS: Eighteen hips (18 patients) having caput valgum treated with screw hemi-epiphysiodesis were followed for more than 2 years, and were included in this study. The mean age at the time of the index operation was 8.3 years (range, 4...
November 14, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/29122239/early-warning-of-limit-exceeding-concentrations-of-cyanobacteria-and-cyanotoxins-in-drinking-water-reservoirs-by-inferential-modelling
#5
Friedrich Recknagel, Philip T Orr, Michael Bartkow, Annelie Swanepoel, Hongqing Cao
An early warning scheme is proposed that runs ensembles of inferential models for predicting the cyanobacterial population dynamics and cyanotoxin concentrations in drinking water reservoirs on a diel basis driven by in situ sonde water quality data. When the 10- to 30-day-ahead predicted concentrations of cyanobacteria cells or cyanotoxins exceed pre-defined limit values, an early warning automatically activates an action plan considering in-lake control, e.g. intermittent mixing and ad hoc water treatment in water works, respectively...
November 2017: Harmful Algae
https://www.readbyqxmd.com/read/29120468/a-novel-2-d-mn-selenidostannate-iv-incorporating-high-nuclear-mn-clusters-with-spin-canting-behavior
#6
Jian Zhou, Hong Xiao, Hua-Hong Zou, Xing Liu
A solvothermal reaction of SnCl4·5H2O, Mn and Se in ethanolamine (Hea) yielded a novel 2-D Mn selenidostannate(iv) [Mn7(ea)6(SnSe4)2]n (1), which not only provides the first example of the incorporation of a hepta-nuclear Mn cluster [Mn7(ea)6](8+) into a selenidostannate(iv) framework, but also shows unusual spin canting behavior.
November 9, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/29113855/holospinal-epidural-abscesses-institutional-experience
#7
REVIEW
Kelly J Bridges, Khoi D Than
PURPOSE: The authors present a holospinal epidural abscesses (HEA) case series and a single institution's experience with varied surgical approaches and outcomes. METHODS: Medical records were queried and reviewed (6 years) for patients with a spinal abscess diagnosis; HEA were selected. Medical history, comorbidities, blood and epidural pathogens, presentation symptoms, abscess location, presence of mass effect, surgical procedures, treatment regimens, and neurological outcomes were collected...
November 4, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/29096083/gene-network-underlying-the-response-of-harvested-pepper-to-chilling-stress
#8
Sun-Young Shin, Me-Hea Park, Ji-Weon Choi, Ji-Gang Kim
Cold storage is an effective postharvest control strategy to maintain the freshness of vegetables by suppressing respiration. However, subtropical plants including pepper (Capsicum annuum L.) undergo chilling injury. To better understand the molecular mechanisms involved in preventing chilling injury, transcriptome profiling analysis of peppers stored in a cold chamber and treated with 50μM methyl jasmonate (MeJA) and 1μLL(-1) 1-methylcyclopropene as an ethylene reaction inhibitor was performed. A total of 240, 470, and 290 genes were upregulated and 184, 291, and 219 genes down-regulated in cold-, MeJA- and 1-methylcyclopropene-treated peppers, respectively...
October 28, 2017: Journal of Plant Physiology
https://www.readbyqxmd.com/read/29094027/effect-of-intraperitoneal-co2-concentration-on-postoperative-pain-after-laparoscopic-cholecystectomy
#9
Ji Won Chung, Kyu Sik Kang, Sang Hyun Park, Chun Sook Kim, Jin Hun Chung, Sie Hyeon Yoo, Nan Seol Kim, Yong Han Seo, Ho Soon Jung, Hea Rim Chun, Hyung Youn Gong, Hae Il Jung, Sang Ho Bae, Su Yeon Park
Purpose: This study set out to identify the association between the intraperitoneal CO2 concentrations and postoperative pain by dividing the participants into a control group and 2 experimental groups receiving irrigation (1 L and 2 L), and directly measuring their intraperitoneal CO2 concentrations with a CO2 gas detector. Methods: A total of 101 patients, American Society of Anesthesiologists physical status classification I and II patients aged 18-65 years were enrolled in the study...
October 2017: Annals of Surgical Treatment and Research
https://www.readbyqxmd.com/read/29089032/new-reference-genome-sequences-of-hot-pepper-reveal-the-massive-evolution-of-plant-disease-resistance-genes-by-retroduplication
#10
Seungill Kim, Jieun Park, Seon-In Yeom, Yong-Min Kim, Eunyoung Seo, Ki-Tae Kim, Myung-Shin Kim, Je Min Lee, Kyeongchae Cheong, Ho-Sub Shin, Saet-Byul Kim, Koeun Han, Jundae Lee, Minkyu Park, Hyun-Ah Lee, Hye-Young Lee, Youngsill Lee, Soohyun Oh, Joo Hyun Lee, Eunhye Choi, Eunbi Choi, So Eui Lee, Jongbum Jeon, Hyunbin Kim, Gobong Choi, Hyeunjeong Song, JunKi Lee, Sang-Choon Lee, Jin-Kyung Kwon, Hea-Young Lee, Namjin Koo, Yunji Hong, Ryan W Kim, Won-Hee Kang, Jin Hoe Huh, Byoung-Cheorl Kang, Tae-Jin Yang, Yong-Hwan Lee, Jeffrey L Bennetzen, Doil Choi
BACKGROUND: Transposable elements are major evolutionary forces which can cause new genome structure and species diversification. The role of transposable elements in the expansion of nucleotide-binding and leucine-rich-repeat proteins (NLRs), the major disease-resistance gene families, has been unexplored in plants. RESULTS: We report two high-quality de novo genomes (Capsicum baccatum and C. chinense) and an improved reference genome (C. annuum) for peppers. Dynamic genome rearrangements involving translocations among chromosomes 3, 5, and 9 were detected in comparison between C...
November 1, 2017: Genome Biology
https://www.readbyqxmd.com/read/29078027/lead-and-iodide-deficient-ch3-nh3-pbi3-d-mapi-the-bridge-between-2d-and-3d-hybrid-perovskites
#11
Antonin Leblanc, Nicolas Mercier, Magali Allain, Jens Dittmer, Vincent Fernandez, Thierry Pauporté
3D and 2D hybrid perovskites, which have been known for more than 20 years, have emerged recently as promising materials for optoelectronic applications, particularly the 3D compound (CH3 NH3 )PbI3 (MAPI). The discovery of a new family of hybrid perovskites called d-MAPI is reported: the association of PbI2 with both methyl ammonium (MA(+) ) and hydroxyethyl ammonium (HEA(+) ) cations leads to a series of five compounds with general formulation (MA)1-2.48x (HEA)3.48x [Pb1-x I3-x ]. These materials, which are lead- and iodide-deficient compared to MAPI while retaining 3D architecture, can be considered as a bridge between the 2D and 3D materials...
October 27, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/29075217/sensory-processing-in-children-with-autism-spectrum-disorder-and-or-attention-deficit-hyperactivity-disorder-in-the-home-and-classroom-contexts
#12
Pilar Sanz-Cervera, Gemma Pastor-Cerezuela, Francisco González-Sala, Raúl Tárraga-Mínguez, Maria-Inmaculada Fernández-Andrés
Children with neurodevelopmental disorders often show impairments in sensory processing (SP) and higher functions. The main objective of this study was to compare SP, praxis and social participation (SOC) in four groups of children: ASD Group (n = 21), ADHD Group (n = 21), ASD+ADHD Group (n = 21), and Comparison Group (n = 27). Participants were the parents and teachers of these children who were 5-8 years old (M = 6.32). They completed the Sensory Processing Measure (SPM) to evaluate the sensory profile, praxis and SOC of the children in both the home and classroom contexts...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/29069044/diagnostic-value-of-the-corrected-qt-difference-between-leads-v1-and-v6-in-patients-with-acute-pulmonary-thromboembolism
#13
Seong Jun Park, Chang Hee Kwon, Byeong Joo Bae, Bum Sung Kim, Sung Hea Kim, Hyun-Joong Kim, Hweung Kon Hwang, Sang-Man Chung
In acute pulmonary thromboembolism (PTE), right ventricular pressure overload impairs right-sided cardiac conduction and repolarization. We hypothesized that if heterogeneity of repolarization between right and left ventricles occurs in acute PTE, there would be the difference of repolarization between them. Therefore, we aimed to evaluate the diagnostic value of corrected QT interval (QTc) difference between leads V1 and V6 (V1 - V6) in patients with acute PTE.A total of 89 patients with suspected acute PTE who underwent computed tomographic angiography (CTA) were enrolled from January to December 2015...
October 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29065616/smartphone-driven-low-power-light-emitting-device
#14
Hea-Ja An, Kyung-Won Kim, Mun-Ho Ryu, Han-Yeong Oh, Nam-Gyun Kim, Kyoung-Jun Park
Low-level light (laser) therapy (LLLT) has been widely researched in the recent past. Existing LLLT studies were performed based on laser. Recently, studies using LED have increased. This study presents a smartphone-driven low-power light-emitting device for use in colour therapy as an alternative medicine. The device consists of a control unit and a colour probe. The device is powered by and communicates with a smartphone using USB On-The-Go (OTG) technology. The control unit controls emitting time and intensity of illumination with the configuration value of a smartphone application...
2017: Journal of Healthcare Engineering
https://www.readbyqxmd.com/read/29064399/pharmabiotics-as-an-emerging-medication-for-metabolic-syndrome-and-its-related-diseases
#15
REVIEW
Thi Thanh Binh Nguyen, Yan Yan Jin, Hea-Jong Chung, Seong-Tschool Hong
Metabolic syndrome (MetS) is a cluster of metabolic risk factors associated with central obesity, hyperglycemia, insulin resistance, dyslipidemia and high blood pressure. In recent decades, because of the remarkable increase in both prevalence and severity, MetS and its related diseases such as cardiovascular diseases (CVDs), obesity, hypertension and diabetes have become the main global burden and challenge in strategic management involving prevention and treatment. However, currently, the preventions and treatments based on pharmaceutical interventions do not provide a solution for MetS and its related diseases...
October 24, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29055031/impact-of-gender-neutral-or-girls-only-vaccination-against-human-papillomavirus-results-of-a-community-randomized-clinical-trial-i
#16
Matti Lehtinen, Anna Söderlund-Strand, Simopekka Vänskä, Tapio Luostarinen, Tiina Eriksson, Kari Natunen, Dan Apter, Iacopo Baussano, Katja Harjula, Mari Hokkanen, Marjo Kuortti, Johanna Palmroth, Tiina Petäjä, Eero Pukkala, Sirpa Rekonen, Mari Siitari-Mattila, Heljä-Marja Surcel, Leena Tuomivaara, Jorma Paavonen, Joakim Dillner, Gary Dubin, Geoffrey Garnett
Human papillomavirus (HPV) vaccine is efficacious but the real-life effectiveness of gender-neutral and girls-only vaccination strategies is unknown. We report a community-randomized trial on the protective effectiveness [(PE) = vaccine efficacy (VE) + herd effect (HE)] of the two strategies among females in virtually HPV vaccination naïve population. We randomized 33 Finnish communities into Arm A) gender-neutral vaccination with AS04-adjuvanted HPV16/18 vaccine (11 communities), Arm B) HPV vaccination of girls and hepatitis B-virus (HBV) vaccination of boys (11 communities) or Arm C) gender-neutral HBV vaccination (11 communities)...
October 21, 2017: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/29037609/scat3-changes-from-baseline-and-associations-with-x2-patch-measured-head-acceleration-in-amateur-australian-football-players
#17
Catherine Willmott, Andrew S McIntosh, Teresa Howard, Biswadev Mitra, Bleydy Dimech-Betancourt, Jarrod Donovan, Jeffrey V Rosenfeld
OBJECTIVES: To investigate changes from baseline on SCAT3 as a result of football game exposure, and association with X2 Patch measured head acceleration events in amateur Australian footballers. DESIGN: Prospective cohort. METHODS: Peak linear acceleration (PLA) of the head (>10 g) was measured by wearable head acceleration sensor X2 Biosystems X-Patch in male (n=34) and female (n=19) Australian footballers. SCAT3 was administered at baseline (B) and post-game (PG)...
October 6, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/29028519/tem-observation-on-phase-separation-and-interfaces-of-laser-surface-alloyed-high-entropy-alloy-coating
#18
Zhaobing Cai, Xiufang Cui, Guo Jin, Zhe Liu, Yang Li, Meiling Dong
Phase separation is a common phenomenon in traditional alloys. Under the condition of appropriate undercooling, the segregation phenomenon can be also found in blue-chip high-entropy alloys (HEAs). In this work, the phase separation behavior and interfacial investigation of laser surface alloyed HEA coating with high content Ti were studied principally by transmission electron microscopy. The results show that crystal structure and elementary composition on both sides of the interface of coating/substrate are quite different, and the interfaces between different phases are incoherent or semi-coherent boundarys, resolved by high resolution transmission electron microscopy...
October 5, 2017: Micron: the International Research and Review Journal for Microscopy
https://www.readbyqxmd.com/read/29018999/population-pharmacokinetics-of-gabapentin-in-healthy-korean-subjects-with-influence-of-genetic-polymorphisms-of-abcb1
#19
Phuong Tran, Hee-Doo Yoo, Lien Ngo, Hea-Young Cho, Yong-Bok Lee
The objective of this study was to perform population pharmacokinetic (PK) analysis of gabapentin in healthy Korean subjects and to investigate the possible effect of genetic polymorphisms (1236C > T, 2677G > T/A, and 3435C > T) of ABCB1 gene on PK parameters of gabapentin. Data were collected from bioequivalence studies, in which 173 subjects orally received three different doses of gabapentin (300, 400, and 800 mg). Only data from reference formulation were used. Population pharmacokinetics (PKs) of gabapentin was estimated using a nonlinear mixed-effects model (NONMEM)...
December 2017: Journal of Pharmacokinetics and Pharmacodynamics
https://www.readbyqxmd.com/read/28978946/the-high-temperature-tensile-and-creep-behaviors-of-high-entropy-superalloy
#20
Te-Kang Tsao, An-Chou Yeh, Chen-Ming Kuo, Koji Kakehi, Hideyuki Murakami, Jien-Wei Yeh, Sheng-Rui Jian
This article presents the high temperature tensile and creep behaviors of a novel high entropy alloy (HEA). The microstructure of this HEA resembles that of advanced superalloys with a high entropy FCC matrix and L12 ordered precipitates, so it is also named as "high entropy superalloy (HESA)". The tensile yield strengths of HESA surpass those of the reported HEAs from room temperature to elevated temperatures; furthermore, its creep resistance at 982 °C can be compared to those of some Ni-based superalloys...
October 4, 2017: Scientific Reports
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