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https://www.readbyqxmd.com/read/29205860/contrasting-patterns-of-variation-in-weedy-traits-and-unique-crop-features-in-divergent-populations-of-us-weedy-rice-oryza-sativa-sp-in-arkansas-and-california
#1
Kimberly L Kanapeckas, Te-Ming Tseng, Cynthia C Vigueira, Aida Ortiz, William C Bridges, Nilda R Burgos, Albert J Fischer, Amy Lawton-Rauh
BACKGROUND: Weed evolution from crops involves changes in key traits, but it is unclear how genetic and phenotypic variation contribute to weed diversification and productivity. Weedy rice is a conspecific weed of rice (Oryza sativa) worldwide. We used principal component analysis and hierarchical clustering to understand how morphologically and evolutionarily distinct US weedy rice populations persist in rice fields in different locations under contrasting management regimes. Further, we used a representative subset of 15 sequence-tagged-site fragments of expressed genes from global Oryza to assess genome-wide sequence variation among populations...
December 5, 2017: Pest Management Science
https://www.readbyqxmd.com/read/29201623/enhanced-charge-collection-in-mof-525-pedot-nanotube-composites-enable-highly-sensitive-biosensing
#2
Tzu-Yen Huang, Chung-Wei Kung, Yu-Te Liao, Sheng-Yuan Kao, Mingshan Cheng, Ting-Hsiang Chang, Joel Henzie, Hatem R Alamri, Zeid A Alothman, Yusuke Yamauchi, Kuo-Chuan Ho, Kevin C-W Wu
With the aim of a reliable biosensing exhibiting enhanced sensitivity and selectivity, this study demonstrates a dopamine (DA) sensor composed of conductive poly(3,4-ethylenedioxythiophene) nanotubes (PEDOT NTs) conformally coated with porphyrin-based metal-organic framework nanocrystals (MOF-525). The MOF-525 serves as an electrocatalytic surface, while the PEDOT NTs act as a charge collector to rapidly transport the electron from MOF nanocrystals. Bundles of these particles form a conductive interpenetrating network film that together: (i) improves charge transport pathways between the MOF-525 regions and (ii) increases the electrochemical active sites of the film...
November 2017: Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
https://www.readbyqxmd.com/read/29199355/assessment-of-modis-derived-indices-2001-2013-to-drought-across-taiwan-s-forests
#3
Chung-Te Chang, Hsueh-Ching Wang, Cho-Ying Huang
Tropical and subtropical ecosystems, the largest terrestrial carbon pools, are very susceptible to the variability of seasonal precipitation. However, the assessment of drought conditions in these regions is often overlooked due to the preconceived notion of the presence of high humidity. Drought indices derived from remotely sensed imagery have been commonly used for large-scale monitoring, but feasibility of drought assessment may vary across regions due to climate regimes and local biophysical conditions...
December 3, 2017: International Journal of Biometeorology
https://www.readbyqxmd.com/read/29198537/healthcare-utilization-and-comorbidities-associated-with-anorectal-malformations-in-the-united-states
#4
Karlo Kovacic, Sravan R Matta, Katja Kovacic, Casey Calkins, Ke Yan, Manu R Sood
OBJECTIVE: To determine nationwide prevalence and healthcare utilization in children with anorectal malformations and associated anomalies over a 6-year period. STUDY DESIGN: We used the Kids' Inpatient Database for the years 2006, 2009, and 2012 for data collection. International Classification of Diseases, Ninth Revision codes were used to identify patients with anorectal malformations and associated anomalies. RESULTS: A total of 2396 children <2 years of age with anorectal malformations were identified using weighted analysis; 54...
November 30, 2017: Journal of Pediatrics
https://www.readbyqxmd.com/read/29197760/lifetime-exposure-to-ambient-air-pollution-and-methylation-of-tumor-suppressor-genes-in-breast-tumors
#5
Catherine L Callahan, Matthew R Bonner, Jing Nie, Daikwon Han, Youjin Wang, Meng-Hua Tao, Peter G Shields, Catalin Marian, Kevin H Eng, Maurizio Trevisan, Jan Beyea, Jo L Freudenheim
BACKGROUND: We previously reported increased risk of breast cancer associated with early life exposure to two measures of air pollution exposure, total suspended particulates (TSP) and traffic emissions (TE), possible proxies for exposure to polycyclic aromatic hydrocarbons (PAHs). Exposure to PAHs has been shown to be associated with aberrant patterns of DNA methylation in peripheral blood of healthy individuals. Exposure to PAHs and methylation in breast tumor tissue has received little attention...
November 30, 2017: Environmental Research
https://www.readbyqxmd.com/read/29191812/physiologically-based-cord-clamping-stabilises-cardiac-output-and-reduces-cerebrovascular-injury-in-asphyxiated-near-term-lambs
#6
Graeme R Polglase, Douglas A Blank, Samantha K Barton, Suzanne L Miller, Vanesa Stojanovska, Martin Kluckow, Andrew W Gill, Domenic LaRosa, Arjan B Te Pas, Stuart B Hooper
BACKGROUND: Physiologically based cord clamping (PBCC) has advantages over immediate cord clamping (ICC) during preterm delivery, but its efficacy in asphyxiated infants is not known. We investigated the physiology of PBCC following perinatal asphyxia in near-term lambs. METHODS: Near-term sheep fetuses (139±2 (SD) days' gestation) were instrumented to measure umbilical, carotid, pulmonary and femoral arterial flows and pressures. Systemic and cerebral oxygenation was recorded using pulse oximetry and near-infrared spectroscopy, respectively...
November 30, 2017: Archives of Disease in Childhood. Fetal and Neonatal Edition
https://www.readbyqxmd.com/read/29170678/high-resolution-and-non-destructive-evaluation-of-the-spatial-distribution-of-nitrate-and-its-dynamics-in-spinach-spinacia-oleracea-l-leaves-by-near-infrared-hyperspectral-imaging
#7
Hao-Yu Yang, Tetsuya Inagaki, Te Ma, Satoru Tsuchikawa
Nitrate is an important component of the nitrogen cycle and is therefore present in all plants. However, excessive nitrogen fertilization results in a high nitrate content in vegetables, which is unhealthy for humans. Understanding the spatial distribution of nitrate in leaves is beneficial for improving nitrogen assimilation efficiency and reducing its content in vegetables. In this study, near-infrared (NIR) hyperspectral imaging was used for the non-destructive and effective evaluation of nitrate content in spinach (Spinacia oleracea L...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/29164460/di-2-ethylhexyl-phthalate-induces-glucose-metabolic-disorder-in-adolescent-rats
#8
Jin Xu, Liting Zhou, Shuyue Wang, Jian Zhu, Te Liu, Yiyang Jia, Di Sun, Huaiji Chen, Qi Wang, Feng Xu, Yuezhu Zhang, Hongbo Liu, Tianrong Zhang, Lin Ye
As a plasticizer, di-(2-ethylhexyl)-phthalate (DEHP) is widely added in various commercial products. Some researchers had suggested that DEHP has adverse effects on the glucose metabolism, but the mechanisms remain unclear. Adolescent Wistar rats were divided into four groups and administered DEHP by gavage at 0, 5, 50, and 500 mg kg(-1) d(-1) for 28 days. ELISA was used to quantify the serum insulin and leptin levels; RT-PCR, immunohistochemistry, and Western blot were used to detect the mRNA and protein expressions of Janus-activated kinase 2 (JAK2), signal transducer and activator of transcription 3 (STAT3), suppressor of cytokine signaling 3 (SOCS3), leptin receptor (Ob-R), and insulin receptor (IR) in liver and pancreas In comparison to the control group, the DEHP-treated rats showed the following: (1) higher organ coefficient of liver; (2) higher fasting blood glucose levels, higher fasting serum insulin and leptin levels, higher insulin resistance index homeostasis model assessment; (3) lower protein levels of Ob-R and IR in the liver and pancreas; (4) higher protein levels of JAK2 and STAT3 in the liver; and (5) higher protein and mRNA levels of SOCS3 in the liver and pancreas...
November 21, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29158416/tracking-the-genome-wide-outcomes-of-a-transposable-element-burst-over-decades-of-amplification
#9
Lu Lu, Jinfeng Chen, Sofia M C Robb, Yutaka Okumoto, Jason E Stajich, Susan R Wessler
To understand the success strategies of transposable elements (TEs) that attain high copy numbers, we analyzed two pairs of rice (Oryza sativa) strains, EG4/HEG4 and A119/A123, undergoing decades of rapid amplification (bursts) of the class 2 autonomous Ping element and the nonautonomous miniature inverted repeat transposable element (MITE) mPing Comparative analyses of whole-genome sequences of the two strain pairs validated that each pair has been maintained for decades as inbreds since divergence from their respective last common ancestor...
November 20, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29140912/reliable-testing-battery-for-assessing-physical-qualities-of-elite-academy-rugby-league-players
#10
Nick Dobbin, Richard Hunwicks, Jamie Highton, Craig Twist
Dobbin, N, Hunwicks, R, Highton, J, and Twist, C. Reliable testing battery for assessing physical qualities of elite academy rugby league players. J Strength Cond Res XX(X): 000-000, 2017-This study assessed the interday reliability of a testing battery for the assessment of physical qualities of rugby league players. Fifty players (age 17.1 ± 1.1 years; stature 181.3 ± 6.3 cm; and body mass 89.0 ± 11.6 kg) from 3 Super League academies participated in this study. Tests of countermovement jump performance, 10- and 20-m sprint performance, change of direction, medicine ball throw, and a modified Yo-Yo Intermittent Recovery Test Level 1 (prone Yo-Yo IR1) were completed on 3 separate occasions...
November 14, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29133315/testosterone-in-advance-age-a-new-zealand-longitudinal-cohort-study-life-and-living-in-advanced-age-te-pu%C3%A4-waitanga-o-ng%C3%A4-tapuwae-kia-ora-tonu
#11
Martin J Connolly, Ngaire Kerse, Tim Wilkinson, Oliver Menzies, Anna Rolleston, Yih Harng Chong, Joanna B Broad, Simon A Moyes, Santosh Jatrana, Ruth Teh
OBJECTIVES: Serum testosterone (T) levels in men decline with age. Low T levels are associated with sarcopenia and frailty in men aged >80 years. T levels have not previously been directly associated with disability in older men. We explored associations between T levels, frailty and disability in a cohort of octogenarian men. SETTING: Data from all men from Life and Living in Advanced Age Cohort Study in New Zealand, a longitudinal cohort study in community-dwelling older adults...
November 12, 2017: BMJ Open
https://www.readbyqxmd.com/read/29133206/relationship-between-polarities-of-antibiotic-and-polymer-matrix-on-nanoparticle-formulations-based-on-aliphatic-polyesters
#12
J A S Ritsema, E M A Herschberg, S E Borgos, C Løvmo, R Schmid, Y M Te Welscher, G Storm, C F van Nostrum
In the field of nanomedicine, nanoparticles are developed to target antibiotics to sites of bacterial infection thus enabling adequate drug exposure and decrease development of resistant bacteria. In the present study, we investigated the encapsulation of two antibiotics with different polarity into different PEGylated polymeric nanoparticles based on aliphatic polyesters, to obtain a better understanding of critical factors determining encapsulation and release. The nanoparticles were prepared from diblock copolymers comprising of a poly(ethylene glycol) block attached to an aliphatic polyester block of varying polarity: poly(lactic-co-glycolic acid) (mPEG-PLGA), poly(lactic-co-hydroxymethyl glycolic acid) (mPEG-PLHMGA) and poly(lactic-co-benzyloxymethyl glycolic acid) (mPEG-PLBMGA)...
November 10, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/29130539/sources-of-systematic-error-in-proton-density-fat-fraction-pdff-quantification-in-the-liver-evaluated-from-magnitude-images-with-different-numbers-of-echoes
#13
Mark Bydder, Gavin Hamilton, Ludovic de Rochefort, Ajinkya Desai, Elhamy R Heba, Rohit Loomba, Jeffrey B Schwimmer, Nikolaus M Szeverenyi, Claude B Sirlin
The purpose of this work was to investigate sources of bias in magnetic resonance imaging (MRI) liver fat quantification that lead to a dependence of the proton density fat fraction (PDFF) on the number of echoes. This was a retrospective analysis of liver MRI data from 463 subjects. The magnitude signal variation with TE from spoiled gradient echo images was curve fitted to estimate the PDFF using a model that included monoexponential R2 * decay and a multi-peak fat spectrum. Additional corrections for non-exponential decay (Gaussian), bi-exponential decay, degree of fat saturation, water frequency shift and noise bias were introduced...
November 12, 2017: NMR in Biomedicine
https://www.readbyqxmd.com/read/29122524/traumatic-brain-injury-integrated-approaches-to-improve-prevention-clinical-care-and-research
#14
REVIEW
Andrew I R Maas, David K Menon, P David Adelson, Nada Andelic, Michael J Bell, Antonio Belli, Peter Bragge, Alexandra Brazinova, András Büki, Randall M Chesnut, Giuseppe Citerio, Mark Coburn, D Jamie Cooper, A Tamara Crowder, Endre Czeiter, Marek Czosnyka, Ramon Diaz-Arrastia, Jens P Dreier, Ann-Christine Duhaime, Ari Ercole, Thomas A van Essen, Valery L Feigin, Guoyi Gao, Joseph Giacino, Laura E Gonzalez-Lara, Russell L Gruen, Deepak Gupta, Jed A Hartings, Sean Hill, Ji-Yao Jiang, Naomi Ketharanathan, Erwin J O Kompanje, Linda Lanyon, Steven Laureys, Fiona Lecky, Harvey Levin, Hester F Lingsma, Marc Maegele, Marek Majdan, Geoffrey Manley, Jill Marsteller, Luciana Mascia, Charles McFadyen, Stefania Mondello, Virginia Newcombe, Aarno Palotie, Paul M Parizel, Wilco Peul, James Piercy, Suzanne Polinder, Louis Puybasset, Todd E Rasmussen, Rolf Rossaint, Peter Smielewski, Jeannette Söderberg, Simon J Stanworth, Murray B Stein, Nicole von Steinbüchel, William Stewart, Ewout W Steyerberg, Nino Stocchetti, Anneliese Synnot, Braden Te Ao, Olli Tenovuo, Alice Theadom, Dick Tibboel, Walter Videtta, Kevin K W Wang, W Huw Williams, Lindsay Wilson, Kristine Yaffe
No abstract text is available yet for this article.
December 2017: Lancet Neurology
https://www.readbyqxmd.com/read/29120982/total-and-segmental-body-composition-examination-in-collegiate-football-players-using-multifrequency-bia-and-dxa
#15
Christiana J Raymond, Donald R Dengel, Tyler A Bosch
The current study examined the influence of player position on the agreement between multi-frequency bioelectrical impedance analysis (MfBIA) and dual X-ray absorptiometry (DXA) when assessing total and segmental percent body fat (BF%), fat mass (FM), and fat-free mass (FFM) in NCAA Division I collegiate football athletes. Forty-four male collegiate athletes (age=19±1 yrs; height=1.9±1.0 m; weight=106.4±18.8 kg) participated. Player positions included: offensive linemen (OL; n=7), tight ends (TE; n=4), wide receivers (WR; n=9), defensive linemen (DL; n=6), defensive backs (DB; n=8), linebackers (LB; n=6), and running backs (RB; n=4)...
November 6, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29120869/on-atomic-mechanisms-governing-the-oxidation-of-bi2te3
#16
Denis Music, Keke Chang, Paul Schmidt, Felix N Braun, Martin Heller, Steffen Hermsen, Peter J Pöllmann, Till Schulzendorff, Cedric Wagner
Oxidation of Bi2Te3 (space group R [Formula: see text] m) has been investigated using experimental and theoretical means. Based on calorimetry, x-ray photoelectron spectroscopy and thermodynamic modelling, Bi2Te3 is at equilibrium with Bi2O3 and TeO2, whereby the most stable compound is Bi2Te3, followed by Bi2O3. The reactivity of Bi towards oxygen is expected to be higher than that of Te. This notion is supported by density functional theory. The strongest bond is formed between Bi and Te, followed by Bi-O...
November 9, 2017: Journal of Physics. Condensed Matter: An Institute of Physics Journal
https://www.readbyqxmd.com/read/29119862/static-and-dynamic-accuracy-of-a-magnetic-inertial-measurement-unit-used-to-provide-racket-swing-kinematics
#17
Benjamin Kane Williams, Ross H Sanders, Joong Hyun Ryu, Pitre C Bourdon, Philip Graham-Smith, Peter J Sinclair
Magnetic-inertial measurement units (MIMUs) are becoming more prevalent in sports biomechanics and may be a viable tool to evaluate kinematic parameters. This study examined the accuracy of a MIMU to estimate orientation angles under static conditions and dynamically from a squash racket during a forehand drive shot. A MIMU was mounted onto a goniometer and moved through 0-90°, with static data collected at 10° increments during 10 repetitions of all three axes. Typical error analyses showed the MIMU to be very reliable (TE ≤ 0...
November 9, 2017: Sports Biomechanics
https://www.readbyqxmd.com/read/29114930/pediatric-diamond-blackfan-anemia-in-the-netherlands-an-overview-of-clinical-characteristics-and-underlying-molecular-defects
#18
B van Dooijeweert, C H van Ommen, F J Smiers, R Y J Tamminga, M W Te Loo, A E Donker, M Peters, B Granzen, J J P Gille, M B Bierings, A W MacInnes, M Bartels
INTRODUCTION: Diamond-Blackfan anemia (DBA) is characterized by hypoplastic anemia, congenital anomalies, and a predisposition for malignancies. Most of our understanding of this disorder stems from molecular studies combined with extensive data input from international patient registries. OBJECTIVES: To create an overview of the pediatric DBA population in the Netherlands. METHODS: Forty-three patients diagnosed with DBA from all Dutch university pediatric hospitals were included in this study and their clinical and genetic characteristics were collected from patient records...
November 7, 2017: European Journal of Haematology
https://www.readbyqxmd.com/read/29104128/association-between-obesity-and-discordance-in-fibrosis-stage-determination-by-magnetic-resonance-vs-transient-elastography-in-patients-with-non-alcoholic-liver-disease
#19
Cyrielle Caussy, Jun Chen, Mosab H Alquiraish, Sandra Cepin, Phirum Nguyen, Carolyn Hernandez, Meng Yin, Ricki Bettencourt, Edward R Cachay, Saumya Jayakumar, Lynda Fortney, Jonathan Hooker, Ethan Sy, Mark A Valasek, Emily Rizo, Lisa Richards, David Brenner, Claude B Sirlin, Richard L Ehman, Rohit Loomba
BACKGROUND & AIMS: Magnetic resonance elastography (MRE) and transient elastography (TE) are noninvasive techniques used to detect liver fibrosis in NAFLD. MRE detects fibrosis more accurately than TE, but MRE is more expensive, and the concordance between MRE and TE have not been optimally assessed in obese patients. It is important to determine under which conditions TE and MRE produce the same readings, so that some patients can simply undergo TE evaluation to detect fibrosis. We aimed to assess the association between body-mass-index (BMI) and discordancy between MRE and TE findings, using liver biopsy as the reference, and validated our findings in a separate cohort...
November 2, 2017: Clinical Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/29093232/treatment-response-monitoring-of-chronic-hepatitis-b-patients-using-transient-elastography-and-aspartate-aminotransferase-to-platelet-ratio-index-apri
#20
Ignatius R Tenggara, C Rinaldi Lesmana, Rino A Gani
BACKGROUND: Hepatitis B is endemic in Indonesia and treatment response need to be monitored during and after antiviral therapy. Liver stiffness measurement and alanine aminotransferase-to-platelet ratio index (APRI) are noninvasive method to detect liver fibrosis available in Indonesia. However, little is known about their ability to evaluate treatment response in chronic hepatitis B (CHB) patients in Indonesia. This study aimed to investigate liver stiffness changes by transient elastography (TE) and APRI before and after one-year oral antiviral treatment in CHB patients and the correlation between TE and APRI...
July 2017: Acta Medica Indonesiana
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