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https://www.readbyqxmd.com/read/28927243/early-endometriosis-in-females-is-directed-by-immune-mediated-estrogen-receptor-alpha-and-il6-cross-talk
#1
Katherine A Burns, Seddon Y Thomas, Katherine J Hamilton, Steven L Young, Donald N Cook, Kenneth S Korach
Endometriosis is a gynecological disease that negatively affects the health of 1 in 10 women. While more information is known about late stage disease, the early initiation of endometriosis and lesion development is poorly understood. Herein, we use a uterine tissue transfer mouse model of endometriosis to examine early disease development and its dependence on estradiol (E2) and estrogen receptor a (ERα) within 72 h of disease initiation. Using wild type and ERα knockout mice as hosts or donors, we find significant infiltration of neutrophils and macrophages into the peritoneal cavity...
September 11, 2017: Endocrinology
https://www.readbyqxmd.com/read/28927138/c-jun-mediated-%C3%AE-1-3-n-acetylglucosaminyltransferase-8-expression-a-novel-mechanism-regulating-the-invasion-and-metastasis-of-colorectal-carcinoma-cells
#2
Chunliang Liu, Hao Qiu, Meiyun Yu, Zerong Wang, Yaqin Yuan, Zhi Jiang, Xuejun Shao, Dong Hua, Min Liu, Shiliang Wu
β-1,3-N-Acetylglucosaminyltransferase 8 (β3GnT8) is a key enzyme that catalyzes the formation of polylactosamine glycan structures by transferring GlcNAc to tetra-antennary β1-6-branched N-glycans, and it has been reported to participate in tumor invasion and metastasis by regulating the expression of matrix metalloproteinases (MMPs), cluster of differentiation 147 (CD147) and polylactosamine. By contrast, the role of transcription factor c-Jun in cell cycle progression has been well established. c-Jun has an important role in tumor cell invasion and metastasis...
September 2017: Oncology Letters
https://www.readbyqxmd.com/read/28927065/mast-cell-chymase-affects-the-proliferation-and-metastasis-of-lung-carcinoma-cells-in-vitro
#3
Yuan Jiang, Yudan Wu, William James Hardie, Xiaoying Zhou
Metastasis of lung carcinoma cells is a major cause of organ failure and mortality of patients with lung cancer. Lung mast cells are a type of immune cell which reside in the respiratory mucosa. High numbers of mast cells are associated with the majority of common types of cancer; however, the effects of mast cells on cancer remain unclear. In the present study, the effects of mast cell chymase (MCC) on the proliferation and adhesion of the lung carcinoma cell lines A549 and H520 was investigated. After 24 h of treatment, the highest dose of MCC (50 mU/ml) decreased the proliferation rate of A549 and H520 cells, whereas the lowest dose of MCC (5 mU/ml) resulted in a small increase in the viability...
September 2017: Oncology Letters
https://www.readbyqxmd.com/read/28927013/transcription-factors-responding-to-pb-stress-in-maize
#4
Yanling Zhang, Fei Ge, Fengxia Hou, Wenting Sun, Qi Zheng, Xiaoxiang Zhang, Langlang Ma, Jun Fu, Xiujing He, Huanwei Peng, Guangtang Pan, Yaou Shen
Pb can damage the physiological function of human organs by entering the human body via food-chain enrichment. Revealing the mechanisms of maize tolerance to Pb is critical for preventing this. In this study, a Pb-tolerant maize inbred line, 178, was used to analyse transcription factors (TFs) expressed under Pb stress based on RNA sequencing data. A total of 464 genes expressed in control check (CK) or Pb treatment samples were annotated as TFs. Among them, 262 differentially expressed transcription factors (DETs) were identified that responded to Pb treatment...
September 18, 2017: Genes
https://www.readbyqxmd.com/read/28926983/expression-of-the-grape-vasts19-gene-in-arabidopsis-improves-resistance-to-powdery-mildew-and-botrytis-cinerea-but-increases-susceptibility-to-pseudomonas-syringe-pv-tomato-dc3000
#5
Yaqiong Wang, Dejun Wang, Fan Wang, Li Huang, Xiaomin Tian, Steve van Nocker, Hua Gao, Xiping Wang
Stilbene synthase (STS) is a key enzyme that catalyzes the biosynthesis of resveratrol compounds and plays an important role in disease resistance. The molecular pathways linking STS with pathogen responses and their regulation are not known. We isolated an STS gene, VaSTS19, from a Chinese wild grape, Vitis amurensis Rupr. cv. "Tonghua-3", and transferred this gene to Arabidopsis. We then generated VaSTS19-expressing Arabidopsis lines and evaluated the functions of VaSTS19 in various pathogen stresses, including powdery mildew, B...
September 17, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28926884/-a-study-on-the-diagnostic-value-of-tear-film-objective-scatter-index-in-dry-eye
#6
Y D Su, Q F Liang, N L Wang, Labbè Antoine
Objective: To study the sensitivity and specificity of tear film objective scatter index to the diagnosis dry eye disease (DED). Methods: A prospective case-controlled study. Fifty-three patients with DED and 32 healthy age- and sex-matched control subjects were included from July to October 2016. All subjects underwent the examinations sequentially as follows: evaluation of ocular surface disease symptoms using the Ocular Surface Disease Index, optical quality detection, lipid layer thickness, tear film breakup time and SchirmerⅠtest...
September 11, 2017: [Zhonghua Yan Ke za Zhi] Chinese Journal of Ophthalmology
https://www.readbyqxmd.com/read/28926871/multiple-organic-cation-transporters-contribute-to-the-renal-transport-of-sulpiride
#7
Liping Li, Yayun Weng, Wei Wang, Mengru Bai, Hongmei Lei, Hui Zhou, Huidi Jiang
Sulpiride, a selective dopamine D2 receptor blocker, is widely used for treatment of schizophrenia, depression, and gastric/duodenal ulcers. Because of the great majority of sulpiride in positive charged at physiological pH7.4, and ~70% of dose recovered in urine in unchanged form after human intravenous administration of sulpiride, we believe transporters play an important role in renal excretion of sulpiride. The aim of the present study was to explore which transporters contribute to the renal disposition of sulpiride...
September 19, 2017: Biopharmaceutics & Drug Disposition
https://www.readbyqxmd.com/read/28926777/experience-as-knowledge-disability-distillation-and-reprogenetic-decision-making
#8
Felicity K Boardman
'Experiential knowledge' is increasingly recognised as an important influence on reproductive decision-making. 'Experiential knowledge of disability' in particular is a significant resource within prenatal testing/screening contexts, enabling prospective parents to imagine and appraise future lives affected by disability. However, the concept of 'experiential knowledge' has been widely critiqued for its idiosyncrasy, its impermanence and consequently its perceived inferiority to (medical) knowledge. This paper explores some of these key critiques of experiential knowledge through an analysis of its constitution and uses in the context of reproductive decision-making...
September 8, 2017: Social Science & Medicine
https://www.readbyqxmd.com/read/28926736/national-early-warning-score-news-at-icu-discharge-can-predict-early-clinical-deterioration-after-icu-transfer
#9
Supattra Uppanisakorn, Rungsun Bhurayanontachai, Jaruwan Boonyarat, Julawan Kaewpradit
OBJECTIVE: This study aims to determine the ability of the National Early Warning Score at ICU discharge (NEWSdc) to predict the development of clinical deterioration within 24h. METHODS: A prospective observational study was conducted. The NEWS was immediately recorded before discharge (NEWSdc). The development of early clinical deterioration was defined as acute respiratory failure or circulatory shock within 24h of ICU discharge. The discrimination of NEWSdc and the best cut off value of NEWSdc to predict the early clinical deterioration was determined...
September 13, 2017: Journal of Critical Care
https://www.readbyqxmd.com/read/28926712/pyrophosphate-release-in-the-protein-hiv-reverse-transcriptase
#10
Murat Atiş, Kenneth A Johnson, Ron Elber
Enzymatic reactions usually occur in several steps: A step of substrate binding to the surface of the protein, a step of protein re-organization around the substrate and conduction of a chemical reaction, and a step of product release. The release of inorganic phosphate - PPi - from the matrix of the protein HIV reverse transcriptase is investigated computationally. Atomically detailed simulations with explicit solvent are analyzed to obtain the free energy profile, mean first passage time, and detailed molecular mechanisms of PPi escape...
September 19, 2017: Journal of Physical Chemistry. B
https://www.readbyqxmd.com/read/28926700/chemical-dynamics-simulations-of-energy-transfer-for-propylbenzene-cation-and-he-collisions
#11
Hyunsik Kim, Biswajit Saha, Subha Pratihar, Moumita Majumder, William Louis Hase
Intermolecular energy transfer (IET) for the vibrationally excited propylbenzene cation (C9H12(+)) in a helium bath was studied with chemical dynamics simulations. The bond energy bond order (BEBO) relationship and electronic structure calculations were used to develop an intramolecular potential C9H12(+). Spin component scaled (SCS) MP2/6-311++G** calculations were used to develop an intermolecular potential for He + C9H12(+). The He + He intermolecular potential was determined from a previous explicitly correlated Gaussian (ECG) electronic structure calculation...
September 19, 2017: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/28926691/cobalt-porphyrin-thiazyl-radical-coordination-polymers-towards-metal-organic-electronics
#12
Delia A Haynes, Laura J van Laeren, Orde Q Munro
Herein we delineate an unusual one-dimensional coordination polymer (CP), 3, prepared from S = ½ Co(TPP), 1, (TPP = 5,10,15,20-tetraphenylporphyrin dianion) and S = ½ 4-(4'-pyridyl)-1,2,3,5-dithiadiazolyl (py-DTDA) radical, 2. The atypically long S-S distance for CP 3 (2.12 Å) reflects fractional electron transfer from the formally Co(II) ion into the antibonding π-SOMO of the metal-bound py-DTDA bridging ligand. The bonding in solid CP 3 involves non-integer redox states in a resonance hybrid repeat unit best formulated as [Co(TPP)](0...
September 19, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28926685/nir-absorbing-metal-free-organic-porphyrin-and-phthalocyanine-dyes-for-panchromatic-dscs
#13
Phillip Brogdon, Hammad Cheema, Jared Heath Delcamp
Dye-sensitized solar cells (DSCs) are a promising source of renewable energy. However, power conversion efficiency (PCE) of devices has been limited largely by the difficulty of producing electricity using photons from the near-infrared (NIR) spectral region. Metal-free organic sensitizers frequently employ strong electron donating or withdrawing moieties to tune the optical band gap to allow the absorption of lower energy wavelengths in charge transfer systems while porphyrins and phthalocyanines use substituents to shift the Soret and Q bands toward lower energy absorption...
September 19, 2017: ChemSusChem
https://www.readbyqxmd.com/read/28926587/functional-characterization-of-zebrafish-orthologs-of-the-human-beta-3-glucosyltransferase-b3glct-gene-mutated-in-peters-plus-syndrome
#14
Eric Weh, Hideyuki Takeuchi, Sanaa Muheisen, Robert S Haltiwanger, Elena V Semina
Peters Plus Syndrome (PPS) is a rare autosomal recessive disease characterized by ocular defects, short stature, brachydactyly, characteristic facial features, developmental delay and other highly variable systemic defects. Classic PPS is caused by loss-of-function mutations in the B3GLCT gene encoding for a β3-glucosyltransferase that catalyzes the attachment of glucose via a β1-3 glycosidic linkage to O-linked fucose on thrombospondin type 1 repeats (TSRs). B3GLCT was shown to participate in a non-canonical ER quality control mechanism; however, the exact molecular processes affected in PPS are not well understood...
2017: PloS One
https://www.readbyqxmd.com/read/28926275/mapping-photoemission-and-hot-electron-emission-from-plasmonic-nanoantennas
#15
Richard Hobbs, William Putnam, Arya Fallahi, Yujia Yang, Franz Kaertner, Karl K Berggren
Understanding plasmon-mediated electron emission and energy transfer on the nanometer length scale is critical to controlling light-matter interactions at nanoscale dimensions. In a high-resolution lithographic material, electron emission and energy transfer lead to chemical transformations. In this work, we employ such chemical transformations in two different high-resolution electron-beam lithography resists, poly(methyl methacrylate) (PMMA) and hydrogen silsesquioxane (HSQ), to map local electron emission and energy transfer with nanometer resolution from plasmonic nanoantennas excited by femtosecond laser pulses...
September 19, 2017: Nano Letters
https://www.readbyqxmd.com/read/28926274/nh2-directed-c-h-alkenylation-of-2-vinylanilines-with-vinylbenziodoxolones
#16
Andreas Boelke, Lucien D Caspers, Boris J Nachtsheim
The first directing-group-mediated C-H alkenylation with alkenyl-λ(3)-iodanes as electrophilic alkene-transfer reagents has been developed. The application of free aromatic amines as challenging but synthetically valuable directing groups in combination with an Ir(III) catalyst enabled the synthesis of highly desirable 1,3-dienes in excellent yields of up to 98% with high to perfect (Z,E) stereoselectivity. A broad substrate scope and further synthetic modifications are demonstrated.
September 19, 2017: Organic Letters
https://www.readbyqxmd.com/read/28926270/an-ultra-thin-nanoporous-membrane-evaporator
#17
Zhengmao Lu, Kyle L Wilke, Daniel John Preston, Ikuya Kinefuchi, Elizabeth F Chang-Davidson, Evelyn N Wang
Evaporation is a ubiquitous phenomenon found in nature and widely used in industry. Yet fundamental understanding of interfacial transport during evaporation remains limited to date owing to the difficulty of characterizing the heat and mass transfer at the interface, especially at high heat fluxes ( > 100 W/cm(2)). In this work, we elucidated evaporation into an air ambient with an ultra-thin (≈ 200 nm thick) nanoporous (≈ 130 nm pore diameter) membrane. With our evaporator design, we accurately monitored the temperature of the liquid-vapor interface, reduced the thermal-fluidic transport resistance and mitigated the clogging risk associated with contamination...
September 19, 2017: Nano Letters
https://www.readbyqxmd.com/read/28926250/the-unimolecular-reactions-of-cf3chf2-studied-by-chemical-activation-assignment-of-rate-constants-and-threshold-energies-to-the-1-2-h-atom-transfer-1-1-hf-elimination-and-1-2-hf-elimination-reactions-and-the-dependence-of-threshold-energies-on-the-number-of
#18
Caleb A Smith, Blanton R Gillespie, George L Heard, Donald W Setser, Bert E Holmes
The recombination of CF3 and CHF2 radicals in a room temperature bath gas was used to prepare CF3CHF2* molecules with 101 kcal mol-1 of vibrational energy. The subsequent 1,2-H-atom transfer, 1,1-HF elimination and 1,2-HF elimination reactions were observed as a function of bath gas pressure by following the CHF3, CF3(F)C: and C2F4 product concentrations by gas chromatography using a mass spectrometer as the detector. The singlet CF3(F)C: concentration was measured by trapping the carbene with trans-2-butene...
September 19, 2017: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/28926228/facile-synthesis-of-unique-cellulose-triacetate-based-flexible-and-high-performance-gel-polymer-electrolyte-for-lithium-ion-batteries
#19
Trupti Nirmale, Indrapal Karbhal, Ramchandra S Kalubarme, Manjusha V Shelke, Anjani J Varma, Bharat Bhanudas Kale
Lithium ion batteries (LIBs) with polymer based electrolytes have attracted huge attention due to the possibility of fabricating intrinsically safer and flexible devices. However, economical and eco-friendly sustainable technology is an oncoming challenge to fulfill the ever increasing demand. To circumvent this issue, we have developed gel polymer electrolyte (GPE) based on renewable polymers like cellulose triacetate (CTA) and poly (polyethylene glycol methacrylate) p(PEGMA) by using a photo polymerization technique...
September 19, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28926194/inverse-response-of-osteoblasts-and-fibroblasts-to-growth-on-carbon-deposited-titanium-surfaces
#20
Chie Yoshihara, Takeshi Ueno, Peng Chen, Yusuke Tsutsumi, Takao Hanawa, Noriyuki Wakabayashi
Titanium implant surfaces may serve as attachment substrates for various cell types. Since carbon adsorption on titanium is inevitable, this study examined the negative/positive biological reaction of osteoblasts and fibroblasts on carbon-deposited titanium surfaces. Osteogenic MC3T3-E1 and fibrogenic NIH/3T3 cells were separately cultured on titanium disks on which carbon deposition was experimentally regulated to achieve titanium/carbon ratios of 6.5, 0.02, 0.005, and 0. The initial attachment of cells demonstrated that the quantity of attached osteoblasts on Ti/C (0...
September 19, 2017: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
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