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https://www.readbyqxmd.com/read/27907016/direct-unequal-cleavages-embryo-developmental-competence-genetic-constitution-and-clinical-outcome
#1
Qiansheng Zhan, Zhen Ye, Robert Clarke, Zev Rosenwaks, Nikica Zaninovic
OBJECTIVE: To investigate the prevalence, developmental potential, chromosomal constitution and clinical outcome of embryos with direct unequal cleavages (DUC). DESIGN: A retrospective observational study. SETTING: Academic Institution. PARTICIPANT: 21,261 embryos from 3,155 cycles cultured in EmbryoScope®. RESULTS: The total incidence of DUCs per embryo occupying the first three cleavages were 26...
2016: PloS One
https://www.readbyqxmd.com/read/27898857/vitamin-e-plasma-kinetics-in-swine-show-low-bioavailability-and-short-half-life-of-%C3%AE-tocopheryl-acetate
#2
T A T G van Kempen, M H Reijersen, C de Bruijn, S De Smet, J Michiels, M G Traber, C Lauridsen
Vitamin E is important for animal production because of its effects on health and product quality, but the amount and form required remains controversial. Our objective was to quantify the absolute bioavailability of oral -α-tocopheryl acetate (α-TAc) in swine (22 ± 1 kg and 8 wk old, fitted with jugular catheters) adapted to a diet supplemented with 75 mg/kg -α-TAc; 75 mg/kg was chosen because this level represents the nonweighted average inclusion level in piglet diets across Western key swine-producing countries...
October 2016: Journal of Animal Science
https://www.readbyqxmd.com/read/27876352/quantitative-analysis-of-pharmacokinetic-profiles-of-verapamil-and-drug-drug-interactions-induced-by-a-cyp-inhibitor-using-a-stable-isotope-labeled-compound
#3
Makoto Kataoka, Chie Kojima, Kazuki Ueda, Keiko Minami, Haruki Higashino, Shinji Sakuma, Kazutaka Togashi, Kuninori Mutaguchi, Shinji Yamashita
The purpose of the present study is to demonstrate a useful approach (isotope-IV method) for analyzing drug-drug interactions (DDIs) following the oral administration of drugs using stable isotope-labeled compounds. Verapamil hydrochloride (VER) was used as a drug model. Deuterium-labeled VER (VER-d6, 0.005 mg/kg) was intravenously administered to rats with or without a pre-treatment with 1-aminobenzotriazole (ABT, 100 mg/kg), a potent CYP inhibitor, 1.5 h after the oral administration of VER (1 mg/kg)...
August 18, 2016: Drug Metabolism and Pharmacokinetics
https://www.readbyqxmd.com/read/27871757/an-approach-to-the-environmental-prioritisation-of-volatile-methylsiloxanes-in-several-matrices
#4
Vera Homem, Daniela Capela, José Avelino Silva, Alessandra Cincinelli, Lúcia Santos, Arminda Alves, Nuno Ratola
Siloxane-based compounds are widely used in personal care, pharmaceutical and household products as well as in industrial applications. Among the wide variety of these chemicals, special attention has been given to volatile methylsiloxanes (VMSs). These compounds have been extensively detected in several environmental compartments, as they are not effectively removed from wastewater and may migrate through different matrices and being lipophilic, bioaccumulate and biomagnify in living organisms. In this work, a prioritisation methodology for several VMSs in different environmental matrices was applied, estimating a hazard quotient by combining exposure evaluation through measured or predicted environmental concentrations (MEC or PEC) and effects using ecotoxicity data to establish no effect concentrations (PNEC)...
November 18, 2016: Science of the Total Environment
https://www.readbyqxmd.com/read/27871034/isotope-fractionation-of-benzene-during-partitioning-revisited
#5
F-D Kopinke, A Georgi, G Imfeld, H-H Richnow
Isotope fractionation between benzene-D0 and benzene-D6 caused by multi-step partitioning of the benzenes between water and two organic solvents, n-octane and 1-octanol, as well as between water and the gas phase, was measured. The obtained fractionation factors αH = KH/KD are αH = 1.080 ± 0.015 and αH = 1.074 ± 0.015 for extraction into n-octane and 1-octanol, respectively, and αH = 1.049 ± 0.010 for evaporation from aqueous solution. The comparison of solvent- and gas-phase partitioning reveals that about 2/3 of the driving force of fractionation is due to different interactions in the aqueous phase, whereas 1/3 is due to different interactions in the organic phase...
November 18, 2016: Chemosphere
https://www.readbyqxmd.com/read/27858023/monomeric-ti-iv-based-complexes-incorporating-luminescent-nitrogen-ligands-synthesis-structural-characterization-emission-spectroscopy-and-cytotoxic-activities
#6
Georges Khalil, Christophe Orvain, Lu Fang, Laurent Barloy, Alain Chaumont, Christian Gaiddon, Marc Henry, Nathalie Kyritsakas, Pierre Mobian
This manuscript describes the synthesis of a series of neutral titanium(iv) monomeric complexes constructed around a TiO4N2 core. The two nitrogen atoms that compose the coordination sphere of the metallic center belong to 2,2'-bipyrimidine ligands homo-disubstituted in the 4 and 4' positions by methyl (2a), phenylvinyl (2b), naphthylvinyl (2c) or anthrylvinyl (2d) groups. The crystal structures of these complexes named [Ti(1)2(2a)], [Ti(1)2(2b)], [Ti(1)2(2c)] and [Ti(1)2(2d)] (where 1 is a 2,2'-biphenolato ligand substituted in the 6 and 6' positions by phenyl groups) are reported...
November 18, 2016: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/27847444/synthesis-characterization-and-biological-studies-of-a-piperidinyl-appended-dipicolylamine-ligand-and-its-rhenium-tricarbonyl-complex-as-potential-therapeutic-agents-for-human-breast-cancer
#7
Amali Subasinghe, Inoka C Perera, Svetlana Pakhomova, Theshini Perera
A novel ligand bearing a central piperidinyl sulfonamide group, N(SO2pip)dpa, and its corresponding Re tricarbonyl complex, [Re(CO)3(N(SO2pip)dpa)](+), have been synthesized in good yield. The methylene CH2 signal seen as a singlet (4.54 ppm) in a (1)H NMR spectrum of the ligand in DMSO-d6 appears as two doublets (5.39, 5.01 ppm) in a spectrum of the [Re(CO)3(N(SO2pip)dpa)](+) complex and confirms the presence of magnetically nonequivalent protons upon coordination to Re. Structural results revealed that the Re-N bond lengths fall within the normal range establishing coordination of ligand to metal...
2016: Bioinorganic Chemistry and Applications
https://www.readbyqxmd.com/read/27836964/phospholipid-composition-and-a-polybasic-motif-determine-d6-protein-kinase-polar-association-with-the-plasma-membrane-and-tropic-responses
#8
Inês C R Barbosa, Hiromasa Shikata, Melina Zourelidou, Mareike Heilmann, Ingo Heilmann, Claus Schwechheimer
The polar transport of the phytohormone auxin through PIN (PIN-FORMED) auxin efflux carriers is essential for the spatio-temporal control of plant development. The Arabidopsis thaliana serine/threonine kinase D6PK (D6 PROTEIN KINASE) is polarly localized at the plasma membrane of many cells where it co-localizes with PINs and activates PIN-mediated auxin efflux. Here, we show that the association of D6PK with the basal plasma membrane and PINs is dependent on the phospholipid composition of the plasma membrane as well as on the phosphatidylinositol phosphate 5-kinases PIP5K1 and PIP5K2 in epidermis cells of the primary root...
November 11, 2016: Development
https://www.readbyqxmd.com/read/27810593/novel-phenylenediamine-bridged-mixed-ligands-dimetallic-square-planner-pt-ii-complex-inhibits-mmps-expression-via-p53-and-caspase-dependent-signaling-and-suppress-cancer-metastasis-and-invasion
#9
Faiz-Ur Rahman, Amjad Ali, Inam Ullah Khan, Hong-Quan Duong, Rong Guo, Hui Wang, Zhan-Ting Li, Dan-Wei Zhang
Novel phenylenediamine bridged mixed ligands dimetallic square planner Pt(II) complex (L-Pt-Py) was synthesized from simple commercially available precursors in good yield and characterized by (1)H, (13)C, 2D NOESY NMR and high resolution mass spectrometry (HR-ESI-MS). The stability of L-Pt-Py was checked by (1)H NMR in mixed DMSO-d6/D2O solvents. L-Pt-Py showed considerable in vitro cytotoxicity in lung (A549), breast (MCF-7) and liver (HepG2) cancer cell lines and strong in vivo growth inhibition in Escherichia coli (E...
January 5, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/27801984/expression-of-immune-genes-in-skin-of-channel-catfish-immunized-with-live-theronts-of-ichthyophthirius-multifiliis
#10
Gabriel S A Moreira, Craig A Shoemaker, Dunhua Zhang, De-Hai Xu
The objective of this study was to evaluate differential expression of innate and adaptive immune genes, including immunoglobulin, immune cell receptor, cytokine, inflammatory protein, toll-like receptors (TLR) and recombination-activating gene (RAG) in skin from channel catfish, Ictalurus punctatus after immunization with live theronts of Ichthyophthirius multifiliis (Ich) by intraperitoneal injection. The immunized catfish showed significantly higher survival rate (95%) than those of mock immunized control fish (0% survival) after the theront challenge...
November 1, 2016: Parasite Immunology
https://www.readbyqxmd.com/read/27780270/placental-chemokine-receptor-d6-is-functionally-impaired-in-pre-eclampsia
#11
Chiara Tersigni, Fiorella Di Nicuolo, Giuseppe Maulucci, Alessandro Rolfo, Domenica Giuffrida, Manuela Veglia, Marco De Spirito, Giovanni Scambia, Tullia Todros, Nicoletta Di Simone
BACKGROUND: Pre-eclampsia (PE) is a major cause of maternal and perinatal morbidity and mortality worldwide. It is defined by new onset of hypertension and proteinuria after the 20th week of gestation and characterized by systemic exaggerated inflammatory response. D6 is a chemokines scavenger receptor that binds with high affinity CC chemokines, internalizes and targets the ligands for degradation. It is expressed in trophoblast-derived tissues and prevents excessive placenta leukocyte infiltration...
2016: PloS One
https://www.readbyqxmd.com/read/27759950/molecular-recognition-properties-of-biphen-4-arene
#12
Suxiang Ma, Huanqing Chen, Jian Li, Xueshun Jia, Chunju Li
Biphen[n]arenes (n=3, 4) are a new family of macrocyclic hosts. Here, we describe the molecular recognition behavior of hydroxylated biphen[4]arene (OHBP4) for the first time. A series of cationic guests with different sizes and shapes, including quaternary ammonium salts (1⋅PF6 and 2⋅PF6 ), pyridinium-based guests (3⋅2 PF6 -6⋅2 PF6 ), and cobaltocenium hexafluorophosphate (7⋅PF6 ), were chosen as model guest molecules. OHBP4 exhibits good selectivity towards the 2,7-dibutyldiazapyrenium bis(hexafluorophosphate) (4⋅2 PF6 ) axle to form a [2]pseudorotaxane-type complex...
October 19, 2016: Chemistry, An Asian Journal
https://www.readbyqxmd.com/read/27753133/efficient-synthesis-of-d6-clenproperol-and-d6-cimaterol-using-deuterium-isopropylamine-as-labelled-precursor
#13
Kai Sun, Chao Fang, Weicheng Yang, Zhongjie Xu, Haoran Wang, Wen Sun, Yong Luo, Yi Xu
This report presents an efficient synthesis of D6 -clenproperol and D6 -cimaterol with 99.5% and 99.7% isotopic abundance in acceptable yields and excellent chemical purities with deuterium isopropylamine as labelled precursor. Their structures and the isotope-abundance were confirmed by proton nuclear magnetic resonance and liquid chromatography-mass spectrometry.
November 2016: Journal of Labelled Compounds & Radiopharmaceuticals
https://www.readbyqxmd.com/read/27731441/tuning-phase-behaviour-of-peg-functionalized-ionic-liquids-from-ucst-to-lcst-in-alcohol-water-mixtures
#14
Wenhui Yao, Huiyong Wang, Guokai Cui, Zhiyong Li, Jianji Wang
Thermo-responsive materials with reversible phase transition in molecular solvents are of great importance for catalysis reaction, product separation, and catalyst recycling among others. In this work, liquid-liquid phase transition of PEG-functionalized ionic liquids [PEGm(mim)2][NTf2]2 (m = 200, 400, 600, 800, 1000) in aliphatic alcohol (ethanol, 1-propanol or isopropanol) and in aqueous aliphatic alcohol was investigated by turbidity and dynamic light scattering (DLS) measurements, and the effects of the alkyl chain length of the alcohol molecules and molecular weight of the PEG middle block of the ionic liquids on the phase transition behaviour were examined...
October 12, 2016: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/27726367/resonance-stabilization-effects-on-ketone-autoxidation-isomer-specific-cyclic-ether-and-ketohydroperoxide-formation-in-the-low-temperature-400-625-k-oxidation-of-diethyl-ketone
#15
Adam Michael Scheer, Arkke J Eskola, David L Osborn, Leonid Sheps, Craig Allen Taatjes
The pulsed photolytic chlorine-initiated oxidation of diethyl ketone [DEK; (CH3CH2)2C=O], 2,2,4,4-d4-DEK [d4-DEK; (CH3CD2)2C=O] and 1,1,1,5,5,5-d6-DEK [d6-DEK; (CD3CH2)2C=O] is studied at 8 Torr and 1 - 2 atm and from 400 - 625 K. Cl atoms produced by laser photolysis react with diethyl ketone to form either primary (3-pentan-on-1-yl, RP) or secondary (3-pentan-on-2-yl, RS¬¬) radicals, which in turn react with O2. Multiplexed time of flight mass spectrometry, coupled to either a hydrogen discharge lamp or tunable synchrotron photoionizing radiation, is used to detect products as a function of mass, time and photon energy...
October 11, 2016: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/27725450/effects-of-glycerophospholipids-on-ceramide-kinase-activity-cardiolipin-affected-cellular-formation-of-ceramide-1-phosphate
#16
Wataru Matsuzaki, Hiromasa Takahashi, Hiroyuki Nakamura, Toshihiko Murayama
Ceramide kinase (CerK) and ceramide-1-phosphate (C1P) are involved in various cellular functions, while regulation of the enzyme activity has not been well elucidated. We herein investigated the effects of several glycerophospholipids on human recombinant CerK activity with CaCl2 and MgCl2 by measuring the formation of fluorescent labeled C1P in vitro. CerK activities were 44.1±11.4 (pmol/µg/min) with vehicle, 137±29 with 2 mM CaCl2, and 144±32 with 2 mM MgCl2 in the glycerol/albumin buffer. The addition of glycerophospholipids such as phosphatidylcholine, phosphatidylinositol (PI), PI 4,5-bisphosphate (PI(4,5)P2), and phosphatidic acid had no effect on CerK activity with CaCl2, although PI(4,5)P2 and phosphatidic acid bound to CerK in the lipid-protein overlay assay...
2016: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/27719720/-ighv-mutational-statue-in-patients-with-splenic-marginal-zone-lymphoma
#17
W J Yang, Z Yu, R Lyu, Z J Li, H Li, W J Xiong, S H Yi, W Liu, L G Qiu
Objective: To investigate the IGHV mutational status and its differences from Caucasian in splenic marginal zone lymphoma (SMZL). Methods: A retrospective study on 40 SMZL cases were performed to detect the V-D-J sequence of IGHV by plasmid cloning sequencing, comparing the data with the most homologous germ line V sequence in database, identifying the stereotype of patients through cluster analysis and alignment. The clinical and laboratory characteristics were compared between the patients with IGHV mutation and without mutations...
September 14, 2016: Zhonghua Xue Ye Xue za Zhi, Zhonghua Xueyexue Zazhi
https://www.readbyqxmd.com/read/27718413/exploring-the-scope-of-new-arylamino-alcohol-derivatives-synthesis-antimalarial-evaluation-toxicological-studies-and-target-exploration
#18
Miguel Quiliano, Adela Mendoza, Kim Y Fong, Adriana Pabón, Nathan E Goldfarb, Isabelle Fabing, Ariane Vettorazzi, Adela López de Cerain, Ben M Dunn, Giovanny Garavito, David W Wright, Eric Deharo, Silvia Pérez-Silanes, Ignacio Aldana, Silvia Galiano
Synthesis of new 1-aryl-3-substituted propanol derivatives followed by structure-activity relationship, in silico drug-likeness, cytotoxicity, genotoxicity, in silico metabolism, in silico pharmacophore modeling, and in vivo studies led to the identification of compounds 22 and 23 with significant in vitro antiplasmodial activity against drug sensitive (D6 IC50 ≤ 0.19 μM) and multidrug resistant (FCR-3 IC50 ≤ 0.40 μM and C235 IC50 ≤ 0.28 μM) strains of Plasmodium falciparum. Adequate selectivity index and absence of genotoxicity was also observed...
September 28, 2016: International Journal for Parasitology, Drugs and Drug Resistance
https://www.readbyqxmd.com/read/27713013/synthesis-photophysical-properties-and-biological-evaluation-of-%C3%AE-alkylaminoporphyrin-for-photodynamic-therapy
#19
Ping-Yong Liao, Xin-Rong Wang, Ying-Hua Gao, Xiang-Hua Zhang, Li-Jun Zhang, Chun-Hong Song, Dan-Ping Zhang, Yi-Jia Yan, Zhi-Long Chen
A series of β-alkylaminoporphyrins conjugated with different amines at β position (D1-D3) or with electron-donating and electron-withdrawing substituents at phenyl position (D4-D6) were synthesized. Their photophysical and photochemical properties, intracellular localization, photocytotoxicities in vitro and vivo were also investigated. All target compounds exhibited no cytotoxicities in the dark and excellent photocytotoxicities against HeLa cells. Among them, D6 showed the highest phototoxicity and the lowest dark toxicity, which was more phototoxic than Hematoporphyrin monomethyl ether (HMME)...
September 26, 2016: Bioorganic & Medicinal Chemistry
https://www.readbyqxmd.com/read/27712994/identification-of-high-affinity-anti-cd16a-allotype-independent-human-antibody-domains
#20
Wei Li, Hongjia Yang, Dimiter S Dimitrov
CD16A (FcγRIIIA) is an activating receptor mostly expressed on natural killer (NK) cells and monocytes/macrophages. It can mediate antibody-dependent cell-mediated cytotoxicity (ADCC) through low-affinity interaction with human immunoglobulin G (IgG) Fc. It can also mediate cell lysis if NK cells are guided by bispecific killer cells engagers (BiKEs). BiKEs showed some success in clinical trials of cancer and are promising candidate therapeutics. However, currently reported BiKEs are based on antibody fragments (scFvs) of relatively large size...
October 3, 2016: Experimental and Molecular Pathology
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