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https://www.readbyqxmd.com/read/28214754/new-pt-nnso-core-anticancer-agents-structural-optimization-and-investigation-of-their-anticancer-activity
#1
Shu Xian Chong, Yinxue Jin, Steve Chik Fun Au-Yeung, Kenneth Kin Wah To
A series of new platinum Pt(II) compounds possessing a bidentate leaving ligand modified from oxaliplatin has been synthesized, with one of the oxygen ligating atom substituted for a sulphur atom (resulting in a Pt-NNSO coordination core structure). The general structures are R,R-diaminocyclohexane (DACH)-Pt-(methylthio)acetic acid (K4) and DACH-Pt-(thiophenylacetic acid) (K4 derivatives). Substitution of an electron donating or withdrawing group at the ortho or para position on the phenyl ring of K4 derivatives was found to affect the complexes' stability, reactivity with the biological molecules (5'-guanosine monophosphate (5'-GMP) and L-methionine (L-Met)) and anticancer activity...
February 12, 2017: Journal of Inorganic Biochemistry
https://www.readbyqxmd.com/read/28214477/hospital-wide-porcine-mesh-conversion-results-in-cost-savings-with-equivalent-clinical-outcomes
#2
Nickolas Byrge, Mary C Mone, Daniel Vargo
BACKGROUND: A variety of biologic mesh is available for ventral hernia repair. Despite widely variable costs, there is no data comparing cost of material to clinical outcome. METHODS: Biologic mesh product change was examined. A prospective survey was done to determine appropriate biologic mesh utilization, followed by a retrospective chart review of those treated from Sept. 2012 to Aug. 2013 with Strattice™ and from Sept. 2013 to Aug. 2014 with Permacol™. Outcome variables included complications associated with each material, repair success, and cost difference over the two periods...
February 12, 2017: American Journal of Surgery
https://www.readbyqxmd.com/read/28214035/transesophageal-echocardiography-in-swine-establishment-of-a-baseline
#3
Katharina Huenges, Saskia Pokorny, Rouven Berndt, Jochen Cremer, Georg Lutter
The porcine model is a commonly used animal model in cardiovascular research. Along with new innovative operative techniques, choice of the optimal imaging technique is crucial. Transesophageal echocardiography (TEE) is a reliable imaging tool is highly important in a large number of experimental evaluations. But so far, TEE data for swine are limited, and few standard values have been established for the porcine model. The experience and baseline results for TEE in 45 swine are presented in this study. A full TEE examination was conducted in 45 German landrace or German large white swine, with an average body weight of 49 ± 3 kg, before experimental off-pump mitral valved stent implantation...
February 15, 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/28213979/mmp-2-and-mmp-14-silencing-inhibits-vegfr2-cleavage-and-induces-the-differentiation-of-porcine-adipose-derived-mesenchymal-stem-cells-to-endothelial-cells
#4
Sami G Almalki, Yovani Llamas Valle, Devendra K Agrawal
The molecular mechanisms that control the ability of adipose-derived mesenchymal stem cells (AMSCs) to remodel three-dimensional extracellular matrix barriers during differentiation are not clearly understood. Herein, we studied the expression of matrix metalloproteinases (MMPs) during the differentiation of AMSCs to endothelial cells (ECs) in vitro. MSCs were isolated from porcine abdominal adipose tissue, and characterized by immunopositivity to CD44, CD90, CD105, and immunonegativity to CD14 and CD45. Plasticity of AMSCs was confirmed by multilineage differentiation...
February 18, 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28213873/first-isolation-and-genetic-characteristics-of-porcine-sapeloviruses-in-hunan-china
#5
Taotao Yang, Runcheng Li, Wang Peng, Meng Ge, Binyu Luo, Tailong Qu, Xinglong Yu
Outbreaks of diarrhea in piglets cause serious economic consequences in China. Diarrhetic fecal samples from 20 Hunan farm piglets were tested and found to be positive for porcine epidemic diarrhea virus (PEDV) by RT-PCR, although incubation with porcine kidney (PK-15) cells failed to produce infectious PEDV. Four porcine sapelovirus (PSV) strains (designated as PSV-HuNs) were isolated from four of the samples. Genomic sequence analysis revealed open reading frames encoding polyproteins of 2,331 (HuN1, 2 and 3) and 2,332 (HuN4) amino acids...
February 17, 2017: Archives of Virology
https://www.readbyqxmd.com/read/28213846/fixation-of-bovine-pericardium-based-tissue-biomaterial-with-irreversible-chemistry-improves-biochemical-and-biomechanical-properties
#6
H Tam, W Zhang, D Infante, N Parchment, M Sacks, N Vyavahare
Bioprosthetic heart valves (BHVs), derived from glutaraldehyde crosslinked (GLUT) porcine aortic valve leaflets or bovine pericardium (BP), are used to replace defective heart valves. However, valve failure can occur within 12-15 years due to calcification and/or progressive structural degeneration. We present a novel fabrication method that utilizes carbodiimide, neomycin trisulfate, and pentagalloyl glucose crosslinking chemistry (TRI) to better stabilize the extracellular matrix of BP. We demonstrate that TRI-treated BP is more compliant than GLUT-treated BP...
February 17, 2017: Journal of Cardiovascular Translational Research
https://www.readbyqxmd.com/read/28213274/differentially-cleaving-peptides-as-a-strategy-for-controlled-drug-release-in-human-retinal-pigment-epithelial-cells
#7
Madhushree Bhattacharya, Sanjay Sarkhel, Jonne Peltoniemi, Robert Broadbridge, Marjo Tuomainen, Seppo Auriola, Arto Urtti
Currently, drug delivery to the posterior eye segment relies on intravitreal injections of therapeutics. This approach requires frequent injections and does not guarantee drug delivery to intracellular targets. Controlled release systems and nanoparticles are being investigated to mitigate these challenges but most of these approaches lack translational success to the clinics. In our present study, we report a peptide based delivery system that utilizes enzyme assisted cleavable linkers to release conjugated cargo within the retinal pigment epithelial (RPE) cells...
February 14, 2017: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/28213086/comparison-of-protocols-for-the-analysis-of-type-1-porcine-reproductive-and-respiratory-syndrome-virus-by-rt-pcr-using-oral-fluids
#8
Elisa Gibert, Gerard Martín-Valls, Enric Mateu
The detection of porcine reproductive and respiratory syndrome virus (PRRSV) in oral fluids (OF) by quantitative real-time polymerase chain reaction (qRT-PCR) is gaining increasing popularity. However, the different steps leading to a result have not been extensively evaluated. The aim of the present study was to examine the effect on the performance of qRT-PCR with different sampling materials, conditions of storage of the OF, the need for centrifuging OF, as well as to compare RNA extraction methods and PCR mixes...
February 14, 2017: Journal of Virological Methods
https://www.readbyqxmd.com/read/28212861/accumulation-of-phosphatidylcholine-on-gut-mucosal-surface-is-not-dominated-by-electrostatic-interactions
#9
Agatha Korytowski, Wasim Abuillan, Federico Amadei, Ali Makky, Andrea Gumiero, Irmgard Sinning, Annika Gauss, Wolfgang Stremmel, Motomu Tanaka
The accumulation of phosphatidylcholine (PC) in the intestinal mucus layer is crucial for the protection of colon epithelia from the bacterial attack. It has been reported that the depletion of PC is a distinct feature of ulcerative colitis. Here we addressed the question how PC interacts with its binding proteins, the mucins, which may establish the hydrophobic barrier against colonic microbiota. In the first step, the interactions of dioleoylphosphatidylcholine (DOPC) with two mucin preparations from porcine stomach, have been studied using dynamic light scattering, zeta potential measurement, and Langmuir isotherms, suggesting that mucin binds to the surface of DOPC vesicles...
February 14, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28212285/transcriptomic-analysis-reveals-selective-metabolic-adaptation-of-streptococcus-suis-to-porcine-blood-and-cerebrospinal-fluid
#10
Anna Koczula, Michael Jarek, Christian Visscher, Peter Valentin-Weigand, Ralph Goethe, Jörg Willenborg
Streptococcus suis is a zoonotic pathogen that can cause severe pathologies such as septicemia and meningitis in its natural porcine host as well as in humans. Establishment of disease requires not only virulence of the infecting strain but also an appropriate metabolic activity of the pathogen in its host environment. However, it is yet largely unknown how the streptococcal metabolism adapts to the different host niches encountered during infection. Our previous isotopologue profiling studies on S. suis grown in porcine blood and cerebrospinal fluid (CSF) revealed conserved activities of central carbon metabolism in both body fluids...
February 15, 2017: Pathogens
https://www.readbyqxmd.com/read/28210824/ultrasound-palpation-for-fast-in-situ-quantification-of-articular-cartilage-stiffness-thickness-and-relaxation-capacity
#11
M Schöne, R M Schulz, H Tzschätzsch, P Varga, K Raum
Most current cartilage testing devices require the preparation of excised samples and therefore do not allow intra-operative application for diagnostic purposes. The gold standard during open or arthroscopic surgery is still the subjective perception of manual palpation. This work presents a new diagnostic method of ultrasound palpation (USP) to acquire applied stress and strain data during manual palpation of articular cartilage. With the proposed method, we obtain cartilage thickness and stiffness. Moreover, repeated palpations allow the quantification of relaxation effects...
February 16, 2017: Biomechanics and Modeling in Mechanobiology
https://www.readbyqxmd.com/read/28210552/capsular-contracture-in-implant-based-breast-reconstruction-the-effect-of-porcine-acellular-dermal-matrix
#12
Alessia M Lardi, Mark Ho-Asjoe, Klaus Junge, Jian Farhadi
BACKGROUND: Irradiation of implant-based breast reconstructions (BR) is known to increase capsular contracture (CC) rates on average by 4-fold over non-irradiated reconstructions. The use of acellular dermal matrix (ADM) has been associated with lower CC rates in non-irradiated reconstructions (0-3%). Experimental and clinical studies suggest that ADM may also reduce CC rates in irradiated breasts. The aim of this study was to evaluate CC rates in non-irradiated and irradiated one- and two-stage BRs performed with the assistance of porcine ADM (PADM)...
February 2017: Gland Surgery
https://www.readbyqxmd.com/read/28210504/comparison-of-maximum-stretch-forces-between-femtosecond-laser-assisted-capsulotomy-and-continuous-curvilinear-capsulorhexis
#13
Mari Takagi, Takashi Kojima, Kei Ichikawa, Yoshiki Tanaka, Yukihito Kato, Rie Horai, Akeno Tamaoki, Kazuo Ichikawa
The current study reports comparing the postoperative mechanical properties of the anterior capsule between femtosecond laser capsulotomy (FLC) and continuous curvilinear capsulorhexis (CCC) of variable size and shape in porcine eyes. All CCCs were created using capsule forceps. Irregular or eccentric CCCs were also created to simulate real cataract surgery. For FLC, capsulotomies 5.3 mm in diameter were created using the LenSx® (Alcon) platform. Fresh porcine eyes were used in all experiments. The edges of the capsule openings were pulled at a constant speed using two L-shaped jigs...
2017: Journal of Ophthalmology
https://www.readbyqxmd.com/read/28210256/transcriptomic-analysis-of-the-innate-antiviral-immune-response-in-porcine-intestinal-epithelial-cells-influence-of-immunobiotic-lactobacilli
#14
Leonardo Albarracin, Hisakazu Kobayashi, Hikaru Iida, Nana Sato, Tomonori Nochi, Hisashi Aso, Susana Salva, Susana Alvarez, Haruki Kitazawa, Julio Villena
Lactobacillus rhamnosus CRL1505 and Lactobacillus plantarum CRL1506 are immunobiotic strains able to increase protection against viral intestinal infections as demonstrated in animal models and humans. To gain insight into the host-immunobiotic interaction, the transcriptomic response of porcine intestinal epithelial (PIE) cells to the challenge with viral molecular associated pattern poly(I:C) and the changes in the transcriptomic profile induced by the immunobiotics strains CRL1505 and CRL1506 were investigated in this work...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28209816/genome-sequence-of-a-novel-porcine-circovirus-type-2-strain-that-reemerged-in-southern-china
#15
Shao-Lun Zhai, Xia Zhou, Tao Lin, He Zhang, Dian-Hong Lv, Xiao-Hui Wen, Xiu-Rong Zhou, Chun-Ling Jia, Du Tu, Xue-Liang Zhu, Qin-Ling Chen, Wen-Kang Wei
Here, we describe a novel porcine circovirus type 2 (PCV2) variant (GD2014) found in the Guangdong province, southern China. Its complete genome is 1,766 nucleotides and contained a 708-nucleotide open reading frame 2 (ORF2). Sequence analysis suggested that GD2014 is closest to JS2015 originating from the Jiangsu province of China and belongs to the PCV2d genotype.
February 16, 2017: Genome Announcements
https://www.readbyqxmd.com/read/28208280/an-integrated-approach-to-unique-nmr-assignment-of-methionine-methyl-resonances-in-proteins
#16
Fei Yu, Jing Qiao, John Robblee, Desiree Tsao, James Anderson, Ishan Capila
The application of methyl nuclear magnetic resonance (NMR) spectroscopy in protein side-chain structural studies offers unique advantages of greater peak sensitivity, even for high-molecular-weight proteins. Traditionally, the utility of methyl NMR has often been limited by the difficulty in assigning the methyl resonances. Herein, a mass spectrometry (MS)-assisted strategy to assign the methyl resonances of methionine residues is presented. The strategy involves partially oxidizing the methionine and quantifying the oxidation level by both NMR and liquid chromatography-mass spectrometry (LC-MS)...
February 7, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28207828/the-wide-spectrum-high-biocidal-potency-of-bioxy-formulation-when-dissolved-in-water-at-different-concentrations
#17
Dori Dagher, Ken Ungar, Richard Robison, Fadi Dagher
Traditional surface disinfectants that have long been applied in medicine, animal husbandry, manufacturing and institutions are inconvenient at best and dangerous at worst. Moreover, some of these substances have adverse environmental impacts: for example, quaternary ammonium compounds ("quats") are reproductive toxicants in both fish and mammals. Halogens are corrosive both to metals and living tissues, are highly reactive, can be readily neutralized by metals, and react with organic matter to form toxic, persistent by-products such as dioxins and furans...
2017: PloS One
https://www.readbyqxmd.com/read/28205718/p-31-esophageal-replacement-by-a-tissue-engineered-substitute-in-a-porcine-model
#18
T Poghosyan, R Sfeir, L Michaud, P Bruneval, M Luong-Nguyen, T Dommet, V Vanneaux, S Gaujoux, J Larghero, F Gottrand, P Cattan
No abstract text is available yet for this article.
April 1, 2016: Diseases of the Esophagus: Official Journal of the International Society for Diseases of the Esophagus
https://www.readbyqxmd.com/read/28205288/hematological-adverse-effects-and-pharmacokinetics-of-ribavirin-in-pigs-following-intramuscular-administration
#19
D-U Lee, S H Je, S J Yoo, T Kwon, J Y Shin, J J Byun, J-H Park, K-W Jeong, J-M Ku, Y S Lyoo
Ribavirin (RBV) is a synthetic guanosine analog that is used as a drug against various viral diseases in humans. The in vitro antiviral effects of ribavirin against porcine viruses were demonstrated in several studies. The purposes of this study were to evaluate the adverse effects and pharmacokinetics of ribavirin following its intramuscular (IM) injection in pigs. Ribavirin was formulated as a double-oil emulsion (RBV-DOE) and gel (RBV-Gel), which were injected into the pigs as single-dose IM injections...
February 15, 2017: Journal of Veterinary Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/28204884/selection-of-bacillus-species-for-targeted-in-situ-release-of-prebiotic-galacto-rhamnogalacturonan-from-potato-pulp-in-piglets
#20
Carsten Jers, Mikael L Strube, Mette D Cantor, Bea K K Nielsen, Ole B Sørensen, Mette Boye, Anne S Meyer
We have previously shown that galacto-rhamnogalacturonan fibers can be enzymatically extracted from potato pulp and that these fibers have potential for exerting a prebiotic effect in piglets. The spore-forming Bacillus species are widely used as probiotics in feed supplements for pigs. In this study, we evaluated the option for further functionalizing Bacillus feed supplements by selecting strains possessing the enzymes required for extraction of the potentially prebiotic fibers. We established that it would require production and secretion of pectin lyase and/or polygalacturonase but no or limited secretion of galactanase and β-galactosidase...
February 15, 2017: Applied Microbiology and Biotechnology
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