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https://www.readbyqxmd.com/read/29241331/photodissociation-dynamics-of-benzaldehyde-d5-at-205-nm-the-h-atom-production-channel
#1
Sung Man Park, Sang Hyuck Yoon, Chan Ho Kwon, Hong Lae Kim
Photodissociation dynamics of benzaldehyde-d5 (C6D5CHO) at 205 nm was investigated by measuring laser-induced fluorescence spectra of fragment H atoms. From the Doppler-broadened spectra, center-of-mass translational energy release into the C6D5CO + H channel was obtained as 68.8 ± 5.8 kJ/mol with the absolute quantum yield, 0.17 ± 0.03. The observed translational energy was successfully estimated from two-dimensional potential energy surfaces along the C-H dissociation coordinate and the CCO bent angle and the out-of-plane H angle, respectively calculated at the B3LYP/cc-pVDZ level...
December 14, 2017: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/29237928/correlations-between-mitofusin-2-expression-in-fibroblasts-and-pelvic-organ-prolapse-an-in-vitro-study
#2
Ye Lu, Hua-Yun Chen, Xiao-Qing Wang, Jing-Xue Wang
BACKGROUND: Both Mitofusin 2 (Mfn2) and pelvic organ prolapse (POP) are related to aging. The aim of the present study was to investigate the variations of Mfn2 expression in the uterosacral ligaments of patients with and/or without POP and their correlations with the expression of procollagen. METHODS: Fibroblasts were cultured using tissue specimens that were harvested from the uterosacral ligaments of POP and non-POP (NPOP) patients (n = 10 for each group) from September 2016 to December 2016...
December 20, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/29234042/cfdna-correlates-with-endothelial-damage-after-cardiac-surgery-with-prolonged-cardiopulmonary-bypass-and-amplifies-netosis-in-an-intracellular-tlr9-independent-manner
#3
Adnana Paunel-Görgülü, Max Wacker, Mouhamed El Aita, Shoreshfan Hassan, Georg Schlachtenberger, Antje Deppe, Yeong-Hoon Choi, Elmar Kuhn, Thorsten O Mehler, Thorsten Wahlers
Cardiopulmonary bypass (CPB) provokes inflammation culminating in organ dysfunction and increased mortality. Recently, neutrophil extracellular traps (NETs) have been found to be involved in a variety of cardiovascular diseases promoting tissue and organ injury. Here, we aimed to elaborate the proinflammatory potential of circulating cell-free (cf)DNA in patients undergoing cardiac surgery with CPB. Plasma was collected pre- and postoperatively as well as at d1, d3, d5 and d8 after surgery. At d1, we found circulating cfDNA levels to be significantly increased in patients with prolonged CPB duration (>100 min) when compared to those with shorter CPB times (CPB < 100 min)...
December 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29231250/synthesis-of-stable-isotope-labeled-nasturlexins-and-potential-precursors-to-probe-biosynthetic-pathways-of-cruciferous-phytoalexins
#4
M Soledade C Pedras, Q Huy To
The syntheses of perdeuterated phytoalexins nasturlexins A and C, and putative biosynthetic precursors, including phenylethyl isothiocyanates and phenylethyl dithiocarbamates, using commercially available [2,3,4,5,6-D5 ]phenylalanine, [2,3,4,5,6-D5 ]nitrobenzene and [2,3,4,5,6-D5 ]benzaldehyde are described. In addition, application of an efficient deuterium-hydrogen exchange transformation to non-labeled starting materials allowed access to new deuterated compounds, including 3-hydroxyphenylethyl glucosinolate...
December 12, 2017: Journal of Labelled Compounds & Radiopharmaceuticals
https://www.readbyqxmd.com/read/29228131/synaptic-potentiation-at-basal-and-apical-dendrites-of-hippocampal-pyramidal-neurons-involves-activation-of-a-distinct-set-of-extracellular-and-intracellular-molecular-cues
#5
Patrycja Brzdak, Olga Wójcicka, Monika Zareba-Koziol, Daniel Minge, Christian Henneberger, Jakub Wlodarczyk, Jerzy W Mozrzymas, Tomasz Wójtowicz
In the central nervous system, several forms of experience-dependent plasticity, learning and memory require the activity-dependent control of synaptic efficacy. Despite substantial progress in describing synaptic plasticity, mechanisms related to heterogeneity of synaptic functions at local circuits remain elusive. Here we studied the functional and molecular aspects of hippocampal circuit plasticity by analyzing excitatory synapses at basal and apical dendrites of mouse hippocampal pyramidal cells (CA1 region) in acute brain slices...
December 8, 2017: Cerebral Cortex
https://www.readbyqxmd.com/read/29226320/breast-cancer-associated-mitochondrial-dna-haplogroup-promotes-neoplastic-growth-via-ros-mediated-akt-activation
#6
Lin Ma, Qingzi Fu, Bing Xu, Huaibin Zhou, Jing Gao, Xiaoli Shao, Jingting Xiong, Qianru Gu, Shumeng Wen, Fengjie Li, Lijun Shen, Guorong Chen, Hezhi Fang, Jianxin Lyu
In the last decade, mitochondrial DNA (mtDNA) haplogroups have been associated with the occurrence of breast cancer. However, the underlying mechanism is not known. Combining a case-control study with a large cohort of women from Southern China with breast cancer and functional analyses with trans-mitochondrial technology, we demonstrate that the D5 haplogroup is associated with an increased risk of breast cancer [odds ratio (OR) = 2.789; 95% confidence interval (CI) [1.318, 5.901]; P = 0.007]. Further, mitochondrial respiration, mitochondrial ATP content, and membrane potential, were lower in both bone osteosarcoma and breast cancer cell models of cytoplasmic hybrids (cybrids) containing the mtDNA D5 haplogroup than in those with non-D5 haplogroups...
December 11, 2017: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/29223074/bioaccumulation-and-trophic-transfer-of-cyclic-volatile-methylsiloxanes-cvms-in-the-aquatic-marine-food-webs-of-the-oslofjord-norway
#7
David E Powell, Merete Schøyen, Sigurd Øxnevad, Reinhard Gerhards, Thomas Böhmer, Martin Koerner, Jeremy Durham, Darren W Huff
The trophic transfer of cyclic methylsiloxanes (cVMS) in aquatic ecosystems is an important criterion for assessing bioaccumulation and ecological risk. Bioaccumulation and trophic transfer of cVMS, specifically octamethylcyclotetrasiloxane (D4), decamethylcyclopentasiloxane (D5), and dodecamethylcyclohexasiloxane (D6), were evaluated for the marine food webs of the Inner and Outer Oslofjord, Norway. The sampled food webs included zooplankton, benthic macroinvertebrates, shellfish, and finfish species. Zooplankton, benthic macroinvertebrates, and shellfish occupied the lowest trophic levels (TL ≈2 to 3); northern shrimp (Pandalus borealis) and Atlantic herring (Clupea harengus) occupied the middle trophic levels (TL ≈3 to 4), and Atlantic cod (Gadus morhua) occupied the highest tropic level (TL>4...
December 6, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29220766/a-global-framework-to-model-spatial-ecosystems-exposure-to-home-and-personal-care-chemicals-in-asia
#8
Cedric Wannaz, Antonio Franco, John Kilgallon, Juliet Hodges, Olivier Jolliet
This paper analyzes spatially ecosystem exposure to home and personal care (HPC) chemicals, accounting for market data and environmental processes in hydrological water networks, including multi-media fate and transport. We present a global modeling framework built on ScenAT (spatial scenarios of emission), SimpleTreat (sludge treatment plants), and Pangea (spatial multi-scale multimedia fate and transport of chemicals), that we apply across Asia to four chemicals selected to cover a variety of applications, volumes of production and emission, and physico-chemical and environmental fate properties: the anionic surfactant linear alkylbenzene sulphonate (LAS), the antimicrobial triclosan (TCS), the personal care preservative methyl paraben (MeP), and the emollient decamethylcyclopentasiloxane (D5)...
December 5, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29219119/density-overwrites-of-internal-tumor-volumes-in-intensity-modulated-proton-therapy-plans-for-mobile-lung-tumors
#9
Pablo Botas, Clemens Grassberger, Gregory Sharp, Harald Paganetti
The purpose of this study was to investigate Internal Tumor Volume (ITV) density overwrite strategies to minimize Intensity Modulated Proton Therapy (IMPT) plan degradation of mobile lung tumors. Four planning paradigms were compared for nine lung cancer patients. IGTV and ICTV structures were defined encompassing their respective volumes in every 4DCT phase. The paradigms use different planning CT (pCT) created from the Average Intensity Projection (AIP) of the 4DCT, overwriting the density within the IGTV to account for movement...
December 8, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/29214400/vasomodulatory-effects-of-the-angiotensin-ii-type-1-receptor-antagonist-losartan-on-experimentally-induced-cerebral-vasospasm-after-subarachnoid-haemorrhage
#10
Stefan Wanderer, Jan Mrosek, Gessler Florian, Seifert Volker, Juergen Konczalla
BACKGROUND: Cerebral vasospasm following subarachnoid haemorrhage (SAH) remains one of the major factors contributing to poor overall patient outcome. Prostaglandin F2-alpha (PGF2a) induces vasoconstriction. After SAH, PGF2a leads to cerebral inflammation and enhanced vasoconstriction, resulting in cerebral vasospasm. Losartan is already known to have beneficial effects in stroke models and also on several cerebral inflammatory processes. Therefore, the aim of the study was to analyse the effect of losartan on PGF2a-enhanced vasoconstriction after SAH...
December 6, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/29209344/qtl-analysis-of-transgressive-nematode-resistance-in-tetraploid-cotton-reveals-complex-interactions-in-chromosome-11-regions
#11
Congli Wang, Mauricio Ulloa, Tra T Duong, Philip A Roberts
Transgressive segregation in cotton (Gossypium spp.) provides an important approach to enhance resistance to the major pest root-knot nematode (RKN) Meloidogyne incognita. Our previous studies reported transgressive RKN resistance in an intraspecific Gossypium hirsutum resistant NemX × susceptible SJ-2 recombinant inbred line (RIL) population and early generations of interspecific cross Gossypium barbadense (susceptible Pima S-7) × G. hirsutum (NemX). However, the underlying functional mechanisms for this phenomenon are not known...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/29209190/classification-of-eeg-signals-based-on-pattern-recognition-approach
#12
Hafeez Ullah Amin, Wajid Mumtaz, Ahmad Rauf Subhani, Mohamad Naufal Mohamad Saad, Aamir Saeed Malik
Feature extraction is an important step in the process of electroencephalogram (EEG) signal classification. The authors propose a "pattern recognition" approach that discriminates EEG signals recorded during different cognitive conditions. Wavelet based feature extraction such as, multi-resolution decompositions into detailed and approximate coefficients as well as relative wavelet energy were computed. Extracted relative wavelet energy features were normalized to zero mean and unit variance and then optimized using Fisher's discriminant ratio (FDR) and principal component analysis (PCA)...
2017: Frontiers in Computational Neuroscience
https://www.readbyqxmd.com/read/29207777/an-aggressive-primary-retroperitoneal-diffuse-large-b-cell-lymphoma-mimicking-a-pancreatic-neoplasm-presenting-as-duodenal-stenosis
#13
Bharadhwaj Ravindhran, Clement Prakash, Sridar Govindharaj, Noor Mohammed Shawnaz Bahnou, B Pavithra
Diffuse Large B-Cell Lymphoma (DLBCL) is the most common histological subtype of Non-Hodgkin's Lymphoma (NHL). Primary retroperitoneal DLBCL is uncommon and has seldom been reported. Extrinsic compression of the duodenum due to lesions originating from the retroperitoneum is also rare. We present a case of a 39-year-old man who presented with inability to tolerate oral intake, abdominal pain, an upper abdominal mass and postprandial bilious vomiting caused by a large DLBCL arising from the retroperitoneum causing extrinsic compression of the duodenum...
September 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/29202706/ancient-dna-reveals-genetic-connections-between-early-di-qiang-and-han-chinese
#14
Jiawei Li, Wen Zeng, Ye Zhang, Albert Min-Shan Ko, Chunxiang Li, Hong Zhu, Qiaomei Fu, Hui Zhou
BACKGROUND: Ancient Di-Qiang people once resided in the Ganqing region of China, adjacent to the Central Plain area from where Han Chinese originated. While gene flow between the Di-Qiang and Han Chinese has been proposed, there is no evidence to support this view. Here we analyzed the human remains from an early Di-Qiang site (Mogou site dated ~4000 years old) and compared them to other ancient DNA across China, including an early Han-related site (Hengbei site dated ~3000 years old) to establish the underlying genetic relationship between the Di-Qiang and ancestors of Han Chinese...
December 4, 2017: BMC Evolutionary Biology
https://www.readbyqxmd.com/read/29202363/quantification-of-glycocholic-acid-in-human-serum-by-stable-isotope-dilution-ultra-performance-liquid-chromatography-electrospray-ionization-tandem-mass-spectrometry
#15
Cheng Guo, Cong Xie, Peili Ding, Guangming Qin, Weimin Mo, Xiaoji Cao, Shu Zheng
A rapid, accurate and sensitive stable isotope dilution ultra performance liquidchromatography electrospray ionization tandem mass spectrometry (ID-UPLC-ESI-MS/MS) method for the determination of glycocholic acid (GCA) in human serum was developed and validated. Serum samples were spiked with D5-glycocholic acid and then pretreated with protein precipitation. The analysis was performed on a Waters BEH C18 column (100 mm×2.1mm, 1.7μm), followed by ESI-MS/MS detection in negative ion mode under multiple reaction monitoring mode...
December 1, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/29198030/adsorptive-performance-of-coal-based-magnetic-activated-carbon-for-cyclic-volatile-methylsiloxanes-from-landfill-leachate
#16
Chunhui Zhang, Shan Jiang, Wenwen Zhang
Bituminous coal-based magnetic activated carbon (MAC) was prepared, characterized, and used successfully for removal of cyclic volatile methylsiloxanes (cVMSs) from treated landfill leachate. Batch adsorption studies were performed at different adsorption dosages and contact times. With adsorptive dosage of 0.75 g/L and contact time of 60 min, the removal efficiencies achieved by MAC for octamethylcyclotetrasiloxane (D4), decamethylcyclopentasiloxane (D5), and dodecamethylcyclohexasiloxane (D6) are 100, 82...
December 3, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29195444/detection-of-keyboard-vibrations-and-effects-on-perceived-piano-quality
#17
Federico Fontana, Stefano Papetti, Hanna Järveläinen, Federico Avanzini
Two experiments were conducted on an upright and a grand piano, both either producing string vibrations or conversely being silent after the initial keypress, while pianists were listening to the feedback from a synthesizer through insulating headphones. In a quality experiment, participants unaware of the silent mode were asked to play freely and then rate the instrument according to a set of attributes and general preference. Participants preferred the vibrating over the silent setup, and preference ratings were associated to auditory attributes of richness and naturalness in the low and middle ranges...
November 2017: Journal of the Acoustical Society of America
https://www.readbyqxmd.com/read/29191234/analysis-of-the-relationship-between-prescribed-dose-and-dosimetric-advantage-of-real-time-intraoperatively-built-custom-linked-seeds-in-iodine-125-prostate-brachytherapy
#18
Katsumi Hirose, Masahiko Aoki, Mariko Sato, Hiroyoshi Akimoto, Yasuhiro Hashimoto, Atsushi Imai, Noritaka Kamimura, Hideo Kawaguchi, Yoshiomi Hatayama, Ichitaro Fujioka, Mitsuki Tanaka, Chikara Ohyama, Yoshihiro Takai
BACKGROUND: The purpose of this study was to investigate the differences in the dosimetric advantage of using intraoperatively built custom-linked (IBCL) seeds between permanent iodine-125 (I-125) seed implantation (PI) alone and PI followed by external-beam radiation therapy (EBRT) for prostate cancer. METHODS: We reviewed the records of 62 patients with localized prostate cancer who received transperineal interstitial brachytherapy with I-125 using free seeds or IBCL seeds...
December 1, 2017: Radiation Oncology
https://www.readbyqxmd.com/read/29187651/-comparison-of-effects-between-il-2-and-il-7-on-glutamic-acid-decarboxylase-65-reactive-t-cell-responses-in-patients-with-type-1-diabetes
#19
Jiao Yuan, Qiuyan Cui, Wei Tang, Chen Chao, Zhiguang Zhou, Lin Yang
To explore the type of cytokine (IL-2 or IL-7) and its most optimal concentration regarding the improvement of the signal-to-noise ratio of glutamic acid decarboxylase 65 (GAD65) in enzyme-linked immunospot (ELISPOT) assay in Type 1 diabetic (T1DM) patients.
 Methods: Twenty T1DM patients (Group A) and sixteen healthy controls matched with age and sex (Group B) were enrolled in our study, and their peripheral blood mononuclear cells (PBMCs) were isolated by Ficoll method. GAD65, internal control and Pediacel served as "five-for-one" vaccine were selected as the stimulating antigen...
November 28, 2017: Zhong Nan da Xue Xue Bao. Yi Xue Ban, Journal of Central South University. Medical Sciences
https://www.readbyqxmd.com/read/29181358/a-case-report-upper-thoracic-chance-fracture-with-monoplegia%C3%A2-an-unusual-presentation
#20
Ketan Shripad Khurjeka, Himanshu Gurunath Kulkarni, Shailesh Hadgaonkar, Ajay Kothari, Ashok Shyam, Parag Sancheti
Introduction: Chance fractures, the horizontal splitting vertebral fractures caused by flexion distraction mechanism, are inherently unstable fractures. These fractures can land up with significant visceral injuries. There are most commonly seen at thoracolumbar junction or in lumbar spine due to their high mobility. These fractures are extremely rare in the thoracic spine due to the rigidity of thoracic spine rendered by attachment of ribs. Furthermore, the level of injury makes neurological complications even graver...
July 2017: Journal of Orthopaedic Case Reports
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