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https://www.readbyqxmd.com/read/28822272/b24n24-fullerene-as-a-carrier-for-5-fluorouracil-anti-cancer-drug-delivery-dft-studies
#1
Mehrnoosh Khodam Hazrati, Zahra Javanshir, Zargham Bagheri
It has been previously indicated that BN nanostructures may be nontoxic and biocompatible. Here the potential application of a B24N24 is explored as a drug delivery system for anti-cancer 5-fluorouracil based on the density functional theory. This drug prefers to attach via its oxygen atoms to the B atoms of the cluster with adsorption energy about -11.90kcalmol(-1) based on the dispersion corrected B3LYP level of theory. To make the cluster more appropriate for drug delivery, we replaced a B atom by Si or Al atom to improve the interaction strength...
August 9, 2017: Journal of Molecular Graphics & Modelling
https://www.readbyqxmd.com/read/28822231/preoperative-halo-gravity-traction-for-severe-thoracic-kyphoscoliosis-patients-from-tibet-radiographic-correction-pulmonary-function-improvement-nursing-and-complications
#2
Xiaojin Li, Liwen Zeng, Xiaoyin Li, Xuexia Chen, Caixia Ke
BACKGROUND This study investigated the outcomes of preoperative HGT as an adjunct treatment for severe thoracic kyphoscoliosis, its role in radiographic correction, and pulmonary function improvement, together with nursing strategy and incidence of complications. MATERIAL AND METHODS Eleven patients with a mean age of 18.8 years were retrospectively reviewed. Inclusion criteria were: patients with severe kyphoscoliosis (coronal Cobb angle and kyphosis angle ≥80°); duration of HGT ≥8 weeks; patients undergoing HGT for at least 12 h per day; traction weight no less than 40% of body weight; and patients not receiving physical therapies...
August 19, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28822183/-application-of-dosc-combined-with-sbc-in-batches-transfer-of-nir-quantitative-model
#3
Yi-Fei Jia, Ying-Ying Zhang, Bing Xu, An-Dong Wang, Xue-Yan Zhan
Near infrared model established under a certain condition can be applied to the new samples status, environmental conditions or instrument status through the model transfer. Spectral background correction and model update are two types of data process methods of NIR quantitative model transfer, and orthogonal signal regression (OSR) is a method based on spectra background correction, in which virtual standard spectra is used to fit a linear relation between master batches spectra and slave batches spectra, and map the slave batches spectra to the master batch spectra to realize the transfer of near infrared quantitative model...
June 2017: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/28822181/-situation-analysis-and-standard-formulation-of-pesticide-residues-in-traditional-chinese-medicines
#4
Wan-Zhen Yang, Chuan-Zhi Kang, Rui-Feng Ji, L I Zhou, Sheng Wang, Zhen-Hao Li, Zhong-Hua Ma, Lan-Ping Guo
Chinese Pharmacopoeia provides nine pesticide Maximum Residual Limits(MRLs) of traditional Chinese medicines(TCMs), The number of pesticides used in production are far more than those listed in pharmacopoeia. The lack of the standards make it's hard to reflect the real situation of pesticide residues in TCMs correctly. The paper is aimed to analyze the data of pesticide residues in TCMs from 7 089 items in 140 reports, and judging the exceedance rate of pesticides in TCMs using the MRLs of European pharmacopoeia,which is widely accepted in many countries...
June 2017: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/28822105/peer-led-small-groups-are-we-on-the-right-track
#5
Fraser Moore
INTRODUCTION: Peer tutor-led small group sessions are a valuable learning strategy but students may lack confidence in the absence of a content expert. This study examined whether faculty reinforcement of peer tutor-led small group content was beneficial. METHODS: Two peer tutor-led small group sessions were compared with one faculty-led small group session using questionnaires sent to student participants and interviews with the peer tutors. One peer tutor-led session was followed by a lecture with revision of the small group content; after the second, students submitted a group report which was corrected and returned to them with comments...
August 18, 2017: Perspectives on Medical Education
https://www.readbyqxmd.com/read/28822101/revisiting-the-logan-plot-to-account-for-non-negligible-blood-volume-in-brain-tissue
#6
Martin Schain, Patrik Fazio, Ladislav Mrzljak, Nahid Amini, Nabil Al-Tawil, Cheryl Fitzer-Attas, Juliana Bronzova, Bernhard Landwehrmeyer, Christina Sampaio, Christer Halldin, Andrea Varrone
BACKGROUND: Reference tissue-based quantification of brain PET data does not typically include correction for signal originating from blood vessels, which is known to result in biased outcome measures. The bias extent depends on the amount of radioactivity in the blood vessels. In this study, we seek to revisit the well-established Logan plot and derive alternative formulations that provide estimation of distribution volume ratios (DVRs) that are corrected for the signal originating from the vasculature...
August 18, 2017: EJNMMI Research
https://www.readbyqxmd.com/read/28822095/validation-of-a-calibration-method-using-the-cross-calibration-factor-and-system-planar-sensitivity-in-quantitative-single-photon-emission-computed-tomography-imaging
#7
Norikazu Matsutomo, Saki Matsumoto, Tomoaki Yamamoto, Eisuke Sato
The present study aimed to validate the absolute quantitative accuracy of a calibration method for single-photon emission computed tomography (SPECT) using cross-calibration factor (CCF)- and system sensitivity-based calibration methods. The CCF obtained with different reconstruction parameters was evaluated using a cylindrical phantom (diameter 20 cm, height 20 cm). SPECT images were acquired with a positron emission tomography/computed tomography (CT) phantom. Subsequently, they were reconstructed by using ordered subset expectation maximization with resolution recovery, scatter, and CT-based attenuation correction...
August 18, 2017: Radiological Physics and Technology
https://www.readbyqxmd.com/read/28822089/nurses-knowledge-and-opinions-on-hpv-vaccination-a-cross-sectional-study-from-istanbul
#8
Ayse Filiz Gokmen Karasu, Ilknur Adanir, Serdar Aydin, Gulsah Keskin Ilhan, Tugba Ofli
Implementing a HPV vaccination program is currently under evaluation by the Turkish health ministry. For screening and vaccination programs to be successful, the cooperation of nurses is essential. We aimed to evaluate (1) basic knowledge of nurses and nursing interns regarding HPV infection and cervical cancer, (2) their attitudes towards smear testing and HPV vaccination, and (3) their viewpoint on vaccination of school age children. This cross-sectional study was undertaken at Bezmialem Vakif University...
August 18, 2017: Journal of Cancer Education: the Official Journal of the American Association for Cancer Education
https://www.readbyqxmd.com/read/28821989/prevalence-of-hyponatremia-in-inpatients-with-incurable-and-life-limiting-diseases-and-its-association-with-physical-symptoms-a-retrospective-descriptive-study
#9
Kerstin Kremeike, Ricarda M L Wetter, Volker Burst, Raymond Voltz, Kathrin Kuhr, Steffen T Simon
PURPOSE: Hyponatremia is a common electrolyte abnormality seen in hospitalized patients. It may cause a variety of symptoms and is associated with longer hospitalizations and higher mortality. However, to date, only little is known about the extent of hyponatremia in patients with incurable diseases and whether it is associated with physical symptoms in this patient group. This study aims to describe the prevalence of hyponatremia, associated symptoms, and symptom intensity in inpatients with hyponatremia receiving specialist palliative care (SPC)...
August 18, 2017: Supportive Care in Cancer: Official Journal of the Multinational Association of Supportive Care in Cancer
https://www.readbyqxmd.com/read/28821947/the-influence-of-microvascular-injury-on-native-t1-and-t2-relaxation-values-after-acute-myocardial-infarction-implications-for-non-contrast-enhanced-infarct-assessment
#10
Lourens F H J Robbers, Robin Nijveldt, Aernout M Beek, Paul F A Teunissen, Maurits R Hollander, P Stefan Biesbroek, Henk Everaars, Peter M van de Ven, Mark B M Hofman, Niels van Royen, Albert C van Rossum
OBJECTIVES: Native T1 mapping and late gadolinium enhancement (LGE) imaging offer detailed characterisation of the myocardium after acute myocardial infarction (AMI). We evaluated the effects of microvascular injury (MVI) and intramyocardial haemorrhage on local T1 and T2* values in patients with a reperfused AMI. METHODS: Forty-three patients after reperfused AMI underwent cardiovascular magnetic resonance imaging (CMR) at 4 [3-5] days, including native MOLLI T1 and T2* mapping, STIR, cine imaging and LGE...
August 18, 2017: European Radiology
https://www.readbyqxmd.com/read/28821857/cdkal1-rs7756992-is-associated-with-diabetic-retinopathy-in-a-chinese-population-with-type-2-diabetes
#11
Danfeng Peng, Jie Wang, Rong Zhang, Feng Jiang, Claudia H T Tam, Guozhi Jiang, Tao Wang, Miao Chen, Jing Yan, Shiyun Wang, Dandan Yan, Zhen He, Ronald C W Ma, Yuqian Bao, Cheng Hu, Weiping Jia
Diabetic retinopathy (DR) is a major microvascular complication of diabetes. Susceptibility genes for type 2 diabetes may also impact the susceptibility of DR. This case-control study investigated the effects of 88 type 2 diabetes susceptibility loci on DR in a Chinese population with type 2 diabetes performed in two stages. In stage 1, 88 SNPs were genotyped in 1,251 patients with type 2 diabetes, and we found that ADAMTS9-AS2 rs4607103, WFS1 rs10010131, CDKAL1 rs7756992, VPS26A rs1802295 and IDE-KIF11-HHEX rs1111875 were significantly associated with DR...
August 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28821852/navigability-of-random-geometric-graphs-in-the-universe-and-other-spacetimes
#12
William Cunningham, Konstantin Zuev, Dmitri Krioukov
Random geometric graphs in hyperbolic spaces explain many common structural and dynamical properties of real networks, yet they fail to predict the correct values of the exponents of power-law degree distributions observed in real networks. In that respect, random geometric graphs in asymptotically de Sitter spacetimes, such as the Lorentzian spacetime of our accelerating universe, are more attractive as their predictions are more consistent with observations in real networks. Yet another important property of hyperbolic graphs is their navigability, and it remains unclear if de Sitter graphs are as navigable as hyperbolic ones...
August 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28821819/dietary-factors-and-polymorphisms-in-vitamin-d-metabolism-genes-the-risk-and-prognosis-of-colorectal-cancer-in-northeast-china
#13
Chen Gong, Zhiping Long, Yanming Yu, Lin Zhu, Jingshen Tian, Shuo Li, Jing Li, Hongyuan Yu, Qiang Chi, Daxun Piao, Fan Wang, Yashuang Zhao, Binbin Cui
CYP24A1 and CYP27B1 are critical genes determining 1α,25(OH)2D3 concentration and impacting on carcinogenesis. A case-control study including 528 colorectal cancer (CRC) patients and 605 cancer-free controls and a follow-up study with 317 cases were conducted in northeast China. Genotypes were tested by TaqMan Genotyping Assays. Individuals carrying the GG genotype of CYP27B1 G > T (rs10877012) exhibited decreased CRC risk compared with those with the TT genotype (ORadjusted (ORadj) = 0.57, 95% Confidence Interval (CI) = 0...
August 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28821785/machine-learning-quantum-phases-of-matter-beyond-the-fermion-sign-problem
#14
Peter Broecker, Juan Carrasquilla, Roger G Melko, Simon Trebst
State-of-the-art machine learning techniques promise to become a powerful tool in statistical mechanics via their capacity to distinguish different phases of matter in an automated way. Here we demonstrate that convolutional neural networks (CNN) can be optimized for quantum many-fermion systems such that they correctly identify and locate quantum phase transitions in such systems. Using auxiliary-field quantum Monte Carlo (QMC) simulations to sample the many-fermion system, we show that the Green's function holds sufficient information to allow for the distinction of different fermionic phases via a CNN...
August 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28821685/nivolumab-related-myasthenia-gravis-with-myositis-and-myocarditis-in-japan
#15
Shigeaki Suzuki, Nobuhisa Ishikawa, Fumie Konoeda, Nobuhiko Seki, Satoshi Fukushima, Kikuko Takahashi, Hisashi Uhara, Yoshikazu Hasegawa, Shinichiro Inomata, Yasushi Otani, Kenji Yokota, Takashi Hirose, Ryo Tanaka, Norihiro Suzuki, Makoto Matsui
OBJECTIVE: To report the clinical features of myasthenia gravis (MG) induced by treatment with immune checkpoint inhibitors using 2-year safety databases based on postmarketing surveys in Japan. METHODS: We studied 10,277 patients with cancer who had received monotherapy with either nivolumab or ipilimumab between September 2014 and August 2016. As the control group, 105 patients with idiopathic MG were used. RESULTS: There were 12 MG cases (0...
August 18, 2017: Neurology
https://www.readbyqxmd.com/read/28821593/light-sheet-microscopy-imaging-of-light-absorption-and-photosynthesis-distribution-in-plant-tissue
#16
Mads Lichtenberg, Erik Christian Løvbjerg Trampe, Thomas Craig Vogelmann, Michael Kühl
In vivo variable-chlorophyll-fluorescence measurements of PSII quantum yields in optically dense systems are complicated by steep tissue light gradients due to scattering and absorption. Consequently, externally measured effective PSII quantum yields may be composed of signals derived from cells differentially exposed to actinic light, where cells located deeper inside tissues receive lower irradiance than cells closer to the surface, and can display distinct photophysiological status. We demonstrate how measured distributions of PSII quantum yields in plant tissue change under natural tissue light gradients as compared to conventionally measured quantum yields with even exposure to actinic light...
August 18, 2017: Plant Physiology
https://www.readbyqxmd.com/read/28821589/multi-population-genomic-relationships-for-estimating-current-genetic-variances-within-and-genetic-correlations-between-populations
#17
Yvonne Wientjes, Piter Bijma, Jérémie Vandenplas, Mario P L Calus
Different methods are available to calculate multi-population genomic relationship matrices. Since those matrices differ in base population, it is anticipated that the method used to calculate genomic relationships affect the estimate of genetic variances, covariances and correlations. The aim of this paper is to define the multi-population genomic relationship matrix to estimate current genetic variances within and genetic correlations between populations. The genomic relationship matrix containing two populations consists of four blocks, one block for population 1, one block for population 2, and two blocks for relationships between the populations...
August 16, 2017: Genetics
https://www.readbyqxmd.com/read/28821536/correction-for-a-call-to-develop-course-based-undergraduate-research-experiences-cures-for-nonmajors-courses
#18
(no author information available yet)
No abstract text is available yet for this article.
2017: CBE Life Sciences Education
https://www.readbyqxmd.com/read/28821532/cross-phenotype-association-mapping-of-the-mhc-identifies-genetic-variants-that-differentiate-psoriatic-arthritis-from-psoriasis
#19
John Bowes, James Ashcroft, Nick Dand, Farideh Jalali-Najafabadi, Eftychia Bellou, Pauline Ho, Helena Marzo-Ortega, Philip S Helliwell, Marie Feletar, Anthony W Ryan, David J Kane, Eleanor Korendowych, Michael A Simpson, Jonathan Packham, Ross McManus, Matthew A Brown, Catherine H Smith, Jonathan N Barker, Neil McHugh, Oliver FitzGerald, Richard B Warren, Anne Barton
OBJECTIVES: Psoriatic arthritis (PsA) is a chronic inflammatory arthritis, with a strong heritable component, affecting patients with psoriasis. Here we attempt to identify genetic variants within the major histocompatibility complex (MHC) that differentiate patients with PsA from patients with cutaneous psoriasis alone (PsC). METHODS: 2808 patients with PsC, 1945 patients with PsA and 8920 population controls were genotyped. We imputed SNPs, amino acids and classical HLA alleles across the MHC and tested for association with PsA compared to population controls and the PsC patient group...
August 18, 2017: Annals of the Rheumatic Diseases
https://www.readbyqxmd.com/read/28821202/corrections
#20
(no author information available yet)
No abstract text is available yet for this article.
September 1, 2017: American Journal of Clinical Pathology
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