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https://www.readbyqxmd.com/read/29204071/the-pharmaceutical-applications-of-a-biopolymer-isolated-from-trigonella-foenum-graecum-seeds-focus-on-the-freeze-dried-matrix-forming-capacity
#1
Sonia Iurian, Elena Dinte, Cristina Iuga, Cătălina Bogdan, Iuliana Spiridon, Lucian Barbu-Tudoran, Andreea Bodoki, Ioan Tomuţă, Sorin E Leucuţa
The aim of the present study was to evaluate the funtion of fenugreek seed mucilage (FSM) as potential matrix forming agent for orodispersible pharmaceutical lyophilisates. The FSM was isolated and characterized. FSM colloidal dispersions were prepared and the rheological evaluation was performed. Oral lyophilisates (OLs) with different FSM concentrations, containing meloxicam as model drug were prepared by freeze drying method. The OLs were characterized and compared to gelatin containing tablets, prepared under the same conditions...
December 2017: Saudi Pharmaceutical Journal: SPJ: the Official Publication of the Saudi Pharmaceutical Society
https://www.readbyqxmd.com/read/29187713/injury-and-mechanism-of-recombinant-e-coli-expressing-sta-on-piglets-colon
#2
Yang Lv, Xueni Li, Lin Zhang, Yutao Shi, Linxiao DU, Binying Ding, Yongqing Hou, Joshua Gong, Tao Wu
Enterotoxigenic Escherichia coli (ETEC) is primary pathogenic bacteria of piglet diarrhea, over two thirds of piglets diarrhea caused by ETEC are resulted from STa-producing ETEC strains. This experiment was conducted to construct the recombinant E.coli expressing STa and study the injury and mechanism of recombinant E.coli expressing STa on 7 days old piglets colon. Twenty-four 7 days old piglets were allotted to four treatments: control group, STa group (2×109 CFU E.coli LMG194-STa), LMG194 group (2×109 CFU E...
November 29, 2017: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/29125633/usability-of-functional-mri-in-clinical-studies-for-fast-and-reliable-assessment-of-renal-perfusion-and-quantification-of-hemodynamic-effects-on-the-kidney
#3
Tobias Getzin, Marcus May, Martina Schmidbauer, Marcel Gutberlet, Petros Martirosian, Reinhard Oertel, Frank Wacker, Christoph Schindler, Katja Hueper
The purpose of this study was to evaluate contrast-media-free arterial spin labeling, a technique of functional magnetic resonance imaging (MRI), for assessment of kidney perfusion in a clinical study. We examined renal perfusion by arterial spin labeling in 15 healthy adults using a clinical 1.5-T MRI system, twice under baseline conditions and 60 minutes after a single oral dose of 50 mg captopril. Data evaluation included assessment of interstudy and interrater reproducibility in addition to the pharmacological effect of captopril on kidney perfusion and a sample size calculation for potential application of the technique in pharmacological intervention studies...
November 10, 2017: Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/28946130/bile-acid-transporter-mediated-endocytosis-of-oral-bile-acid-conjugated-nanocomplex
#4
Jooho Park, Jeong Uk Choi, Kwangmeyung Kim, Youngro Byun
The development of highly funtional and orally available nanoparticles is the ultimate goal in nanoparticle delivery. Various functional nanoparticles have been studied to that end but there has yet to be an oral nanoparticle that can be successfully applied. Here, we describe for the first time a novel bile acid conjugated nanoparticle that can be selectively absorbed by bile acid transporters in the small intestine. The bile acid conjugate nanoparticles that were first treated with enterocytes were successfully attached to the cell surface and then internalized inside the cells...
September 18, 2017: Biomaterials
https://www.readbyqxmd.com/read/28655353/xc_0531-encodes-a-c-type-cytochrome-biogenesis-protein-and-is-required-for-pathogenesis-in-xanthomonas-campestris-pv-campestris
#5
Lei Chen, Mingpeng Wang, Li Huang, Zhaojie Zhang, Fanghua Liu, Guangtao Lu
BACKGROUND: The phytopathogenic Xanthomonas campestris pv.campestris is a gram-negative bacterium and the causal agent of black-rot disease of cruciferous crops. Many gram-negative bacteria possess a family of proteins, called Dsbs, which are involved in disulfide bond formation in certain periplasmic proteins. In our preliminary screening of the virulence to the plants we identified that gene XC_0531 which annotated gene dsbD of Xanthomonas campestris pv. campestris (Xcc) is related to the virulence to the host plants...
June 27, 2017: BMC Microbiology
https://www.readbyqxmd.com/read/28647957/-long-term-effectiveness-of-transvaginal-high-uterosacral-ligament-suspension
#6
L Duan, Y X Lu, W J Shen, X Liu, J X Liu, Y H Zhang, J Ge, Y Zhao, K Niu, W Y Wang
Objective: To assess the long-term effectiveness of the transvaginal high uterosacral ligament suspension (HUS) in women suffering from advanced pelvic organ prolapse (POP). Methods: A retrospective review of records identified 118 women who underwent transvaginal HUS with or without additional concomitant anterior and (or) posterior repairs from June 2003 to August 2009 in the First Affiliated Hospital, General Hospital of People's Liberation Army. Of 118 women, 104 women completed the follow-up during study period; these 104 women were analysed...
June 25, 2017: Zhonghua Fu Chan Ke za Zhi
https://www.readbyqxmd.com/read/28621132/one-pot-consecutive-sulfonamidation-ipso-cyclization-strategy-for-the-construction-of-azaspirocyclohexadienones
#7
Chada Raji Reddy, Ravi Ranjan, Santosh Kumar Prajapti, Kamalkishor Warudikar
Harnessing of Morita-Baylis-Hillman (MBH) carbonates of acetylenic aldehydes as handy synthons has allowed a facile synthesis of azaspirocyclohexadienones by sequential DABCO-promoted sulfonamidation/ICl-mediated ipso-iodocyclization reactions. A variety of MBH-carbonates having aryl or heteroaryl groups on the alkyne functionality fruitfully participated in the one-pot ipso-annulation reaction to provide the corresponding 3-iodo spirocyclohexadienones. The sulphonamide functionality was further utilized to construct the tricyclic fused-sultam framework...
June 27, 2017: Journal of Organic Chemistry
https://www.readbyqxmd.com/read/28588043/heme-a-synthesis-and-cco-activity-are-essential-for-trypanosoma-cruzi-infectivity-and-replication
#8
Marcelo L Merli, Brenda A Cirulli, Simón M Menéndez-Bravo, Julia A Cricco
Trypanosoma cruzi, the causative agent of Chagas disease, presents a complex life cycle and adapts its metabolism to nutrients' availability. Although T. cruzi is an aerobic organism, it does not produce heme. This cofactor is acquired from the host and is distributed and inserted into different heme-proteins such as respiratory complexes in the parasite's mitochondrion. It has been proposed that T. cruzi's energy metabolism relies on a branched respiratory chain with a cytochrome c oxidase-type aa3 (CcO) as the main terminal oxidase...
June 27, 2017: Biochemical Journal
https://www.readbyqxmd.com/read/28291341/structural-electronic-and-thermodynamic-properties-of-the-t-and-b-phases-of-niobia-first-principle-calculations
#9
Mirele B Pinto, Antonio Lenito Soares, Andy Mella Orellana, Hélio A Duarte, Heitor A De Abreu
Different polymorphs of Nb2O5 can be obtained depending on the pressure and temperature of calcination leading to different catalytic properties. Two polymorphs of niobia, T-Nb2O5 and B-Nb2O5, have been investigated by means of density functional/plane waves method. The equation of state predicted that B-Nb2O5 phase is more stable than the T-Nb2O5 at low temperature; however at high pressure both phases are stable. These results are in good agreement with the available experimental data. The calculated cohesive energies of 6...
March 22, 2017: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/28196116/the-scoring-bias-in-reverse-docking-and-the-score-normalization-strategy-to-improve-success-rate-of-target-fishing
#10
Qiyao Luo, Liang Zhao, Jianxing Hu, Hongwei Jin, Zhenming Liu, Liangren Zhang
Target fishing often relies on the use of reverse docking to identify potential target proteins of ligands from protein database. The limitation of reverse docking is the accuracy of current scoring funtions used to distinguish true target from non-target proteins. Many contemporary scoring functions are designed for the virtual screening of small molecules without special optimization for reverse docking, which would be easily influenced by the properties of protein pockets, resulting in scoring bias to the proteins with certain properties...
2017: PloS One
https://www.readbyqxmd.com/read/28155960/connecting-quantum-dots-with-enzymes-mediator-based-approaches-for-the-light-directed-read-out-of-glucose-and-fructose-oxidation
#11
M Riedel, N Sabir, F W Scheller, W J Parak, F Lisdat
The combination of the biocatalytic features of enzymes with the unique physical properties of nanoparticles in a biohybrid system provides a promising approach for the development of advanced bioelectrocatalytic devices. This study describes the construction of photoelectrochemical signal chains based on CdSe/ZnS quantum dot (QD) modified gold electrodes as light switchable elements, and low molecular weight redox molecules for the combination with different biocatalysts. Photoelectrochemical and photoluminescence experiments verify that electron transfer can be achieved between the redox molecules hexacyanoferrate and ferrocene, and the QDs under illumination...
February 3, 2017: Nanoscale
https://www.readbyqxmd.com/read/28057867/molecular-diversity-of-corticotropin-releasing-hormone-mrna-containing-neurons-in-the-hypothalamus
#12
REVIEW
Roman A Romanov, Alán Alpár, Tomas Hökfelt, Tibor Harkany
Hormonal responses to acute stress rely on the rapid induction of corticotropin-releasing hormone (CRH) production in the mammalian hypothalamus, with subsequent instructive steps culminating in corticosterone release at the periphery. Hypothalamic CRH neurons in the paraventricular nucleus of the hypothalamus are therefore considered as 'stress neurons'. However, significant morphological and functional diversity among neurons that can transiently produce CRH in other hypothalamic nuclei has been proposed, particularly as histochemical and molecular biology evidence associates CRH to both GABA and glutamate neurotransmission...
March 2017: Journal of Endocrinology
https://www.readbyqxmd.com/read/27957855/effect-of-out-of-plane-alkyl-group-s-position-in-dye-sensitized-solar-cell-efficiency-a-structure-property-relationship-utilizing-indoline-based-unsymmetrical-squaraine-dyes
#13
Ananthan Alagumalai, Munavvar Fairoos M K, Punitharasu Vellimalai, Manik Chandra Sil, Jayaraj Nithyanandhan
Squaraine dyes are promising chromophores to harvest visible and near-infrared (NIR) photons. A series of indoline-based unsymmetrical squaraine (SQ) dyes that contain alkyl chains at sp(3) C- and N- atoms of indoline moieties with a carboxylic acid anchoring group were synthesized. The optical and electrochemical properties of the SQ dyes in solution were nearly identical as there was no change in the D-A-D SQ framework; however, remarkable changes with respect to the power conversion efficiencies (PCE) were observed depending upon the position of alkyl groups in the dye...
December 28, 2016: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/27748839/trim16-suppresses-the-progression-of-prostate-tumors-by-inhibiting-the-snail-signaling-pathway
#14
Li Qi, Zhong Lu, Yong-Hong Sun, Hai-Tao Song, Wei-Kang Xu
Prostate carcinoma is a devastating disease which is characterized by insidious early symptoms, rapid progression and a poor prognosis. Tripartite motif-containing protein 16 (TRIM16) was identified as an estrogen- and antiestrogen-regulated gene in epithelial cells stably expressing estrogen receptors. The protein encoded by this gene contains two B-box domains and a coiled-coiled region that are characteristic of the B-box zinc finger protein family. Proteins belonging to this family have been reported to be involved in a variety of biological processes including cell growth, differentiation and pathogenesis...
December 2016: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/27356893/proteomic-analysis-of-exosomes-and-exosome-free-conditioned-media-from-human-osteosarcoma-cell-lines-reveals-secretion-of-proteins-related-to-tumor-progression
#15
Sofía Jerez, Héctor Araya, Roman Thaler, M Cristine Charlesworth, Remigio López-Solís, Alexis M Kalergis, Pablo F Céspedes, Amel Dudakovic, Gary S Stein, Andre J van Wijnen, Mario Galindo
Osteosarcomas are the most prevalent bone tumors in pediatric patients, but can also occur later in life. Bone tumors have the potential to metastasize to lung and occasionally other vital organs. To understand how osteosarcoma cells interact with their micro-environment to support bone tumor progression and metastasis, we analyzed secreted proteins and exosomes from three human osteosarcoma cell lines. Exosome isolation was validated by transmission electron microscopy (TEM) and immuno-blotting for characteristic biomarkers (CD63, CD9, and CD81)...
February 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/27320335/natural-and-structure-based-rxr-ligand-scaffolds-and-their-functions
#16
REVIEW
Marta Dominguez, Susana Alvarez, Angel R de Lera
Retinoid X receptors (RXRs) are promiscuous partners of heterodimeric associations with other members of the Nuclear Receptor (NR) superfamily. Through these liaisons RXR ligands ("rexinoids") either transcriptionally activate on their own the "permissive" subclass of heterodimers (PPAR/RXR, LXR/RXR, FXR/RXR) or synergize with partner ligands in the "non-permissive" subclass of heterodimers (RAR/RXR, VDR/RXR and TR/RXR). The nature and extent of the interaction of the ligand-receptor complexes with co-regulators, which is cell and context-dependent, results ultimately in transcriptional modulation of cognate gene networks...
2017: Current Topics in Medicinal Chemistry
https://www.readbyqxmd.com/read/27193062/a-genome-wide-association-scan-implicates-dchs2-runx2-gli3-pax1-and-edar-in-human-facial-variation
#17
Kaustubh Adhikari, Macarena Fuentes-Guajardo, Mirsha Quinto-Sánchez, Javier Mendoza-Revilla, Juan Camilo Chacón-Duque, Victor Acuña-Alonzo, Claudia Jaramillo, William Arias, Rodrigo Barquera Lozano, Gastón Macín Pérez, Jorge Gómez-Valdés, Hugo Villamil-Ramírez, Tábita Hunemeier, Virginia Ramallo, Caio C Silva de Cerqueira, Malena Hurtado, Valeria Villegas, Vanessa Granja, Carla Gallo, Giovanni Poletti, Lavinia Schuler-Faccini, Francisco M Salzano, Maria-Cátira Bortolini, Samuel Canizales-Quinteros, Michael Cheeseman, Javier Rosique, Gabriel Bedoya, Francisco Rothhammer, Denis Headon, Rolando González-José, David Balding, Andrés Ruiz-Linares
We report a genome-wide association scan for facial features in ∼6,000 Latin Americans. We evaluated 14 traits on an ordinal scale and found significant association (P values<5 × 10(-8)) at single-nucleotide polymorphisms (SNPs) in four genomic regions for three nose-related traits: columella inclination (4q31), nose bridge breadth (6p21) and nose wing breadth (7p13 and 20p11). In a subsample of ∼3,000 individuals we obtained quantitative traits related to 9 of the ordinal phenotypes and, also, a measure of nasion position...
2016: Nature Communications
https://www.readbyqxmd.com/read/27120098/exfoliated-mos2-in-water-without-additives
#18
Viviane Forsberg, Renyun Zhang, Joakim Bäckström, Christina Dahlström, Britta Andres, Magnus Norgren, Mattias Andersson, Magnus Hummelgård, Håkan Olin
Many solution processing methods of exfoliation of layered materials have been studied during the last few years; most of them are based on organic solvents or rely on surfactants and other funtionalization agents. Pure water should be an ideal solvent, however, it is generally believed, based on solubility theories that stable dispersions of water could not be achieved and systematic studies are lacking. Here we describe the use of water as a solvent and the stabilization process involved therein. We introduce an exfoliation method of molybdenum disulfide (MoS2) in pure water at high concentration (i...
2016: PloS One
https://www.readbyqxmd.com/read/27103452/rna-epigenetic-modification-n6-methyladenosine
#19
REVIEW
Xiao Zhang, Gui-fang Jia
N(6)-methyladenosine (m(6)A) is one of the most prevalent internal modifications in eukaryotic messenger RNA. The dynamic and reversible modification is installed by methyltransferase complex charactered three subunits: METTL3 (Methyltransferase-like protein 3), METTL14 (Methyltransferase-like protein 14) and WTAP (Wilms tumor 1-associating protein), and erased by two independent demethylases, FTO (Fat mass and obesity associated protein) and ALKBH5 (AlkB homolog 5), in an α-ketoglutarate (α-KG)- and Fe(II)-dependent manner...
April 2016: Yi Chuan, Hereditas
https://www.readbyqxmd.com/read/26966729/ultrasound-accuracy-of-liver-length-measurement-with-cadaveric-specimens
#20
Bárbara L Riestra-Candelaria, Wilma Rodríguez-Mojica, Luis E Vázquez-Quiñones, Juan Carlos Jorge
The liver is one of the principal organs of our body involved in over 500 physiological functions related to metabolism, digestion, immunity, and storage of nutrients, which makes it an essential organ to preserve life. Given that there are a number of approaches to measure liver length through diagnostic 2D sonography, this work aims to determine the most accurate measurement of this organ. Cadaveric specimens (n = 21) were employed to assess measurements in midclavicular line (MCL) and midaxillary line (MAL)...
January 2016: Journal of Diagnostic Medical Sonography: JDMS
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