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https://www.readbyqxmd.com/read/28430904/catheter-based-tricuspid-valve-replacement-first-experimental-data-of-a-newly-designed-bileaflet-stent-graft-prosthesis%C3%A2
#1
Henning F Lausberg, Rafal Gryszkiewicz, Maximilian Kuetting, Moritz Baumgaertner, Marcos Centola, Hans-Peter Wendel, Martina Nowak-Machen, David Schibilsky, Tobias Kruger, Christian Schlensak
OBJECTIVES: Moderate or severe degree tricuspid valve regurgitation (TVR) is associated with high rates of morbidity and mortality. Surgical correction as the only therapeutic option offers unsatisfactory results. Recently, several interventional procedures have been introduced clinically in a limited cohort. We present our initial experiments with an innovative interventional valved stent graft for treatment of TVR. METHODS: A newly designed porcine pericardium-covered nitinol stent graft with a lateral bicuspid valve was adapted to size in a cadaver study...
April 18, 2017: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/28430698/the-right-ventricle-is-dilated-during-resuscitation-from-cardiac-arrest-caused-by-hypovolemia-a-porcine-ultrasound-study
#2
Rasmus Aagaard, Asger Granfeldt, Morten T Bøtker, Troels Mygind-Klausen, Hans Kirkegaard, Bo Løfgren
OBJECTIVES: Dilation of the right ventricle during cardiac arrest and resuscitation may be inherent to cardiac arrest rather than being associated with certain causes of arrest such as pulmonary embolism. This study aimed to compare right ventricle diameter during resuscitation from cardiac arrest caused by hypovolemia, hyperkalemia, or primary arrhythmia (i.e., ventricular fibrillation). DESIGN: Thirty pigs were anesthetized and then randomized to cardiac arrest induced by three diffrent methods...
April 20, 2017: Critical Care Medicine
https://www.readbyqxmd.com/read/28430654/alpha-ketoglutarate-suppresses-the-nf-%C3%AE%C2%BAb-mediated-inflammatory-pathway-and-enhances-the-pxr-regulated-detoxification-pathway
#3
Liuqin He, Huan Li, Niu Huang, Xihong Zhou, Junquan Tian, Tiejun Li, Jing Wu, Yanan Tian, Yulong Yin, Kang Yao
Alpha-ketoglutarate (AKG) is a critical nutritional factor in the maintenance of intestinal homeostasis. However, the relative mechanism of AKG has not been well understood. It was recently shown that the interaction between nuclear factor kappa B (NF-κB)-mediated inflammatory pathway and pregnane X receptor (PXR)-regulated detoxification pathway is a check and balance mechanism for keeping the homeostatic state of the intestine, preventing the onset of intestinal inflammation which may lead to cancer. In the current study we used lipopolysaccharide (LPS)-challenged piglet and intestinal porcine epithelial cells-J2 models to investigate the effects of dietary AKG supplementation on the intestinal immune system and PXR regulated target expression...
April 6, 2017: Oncotarget
https://www.readbyqxmd.com/read/28430207/corrigendum-construction-and-immunogenicity-of-a-recombinant-swinepox-virus-expressing-a-multi-epitope-peptide-for-porcine-reproductive-and-respiratory-syndrome-virus
#4
Huixing Lin, Zhe Ma, Xin Hou, Lei Chen, Hongjie Fan
No abstract text is available yet for this article.
April 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28430144/a-systems-biology-approach-using-transcriptomic-data-reveals-genes-and-pathways-in-porcine-skeletal-muscle-affected-by-dietary-lysine
#5
Taiji Wang, Jean M Feugang, Mark A Crenshaw, Naresh Regmi, John R Blanton, Shengfa F Liao
Nine crossbred finishing barrows (body weight 94.4 ± 6.7 kg) randomly assigned to three dietary treatments were used to investigate the effects of dietary lysine on muscle growth related metabolic and signaling pathways. Muscle samples were collected from the longissimus dorsi of individual pigs after feeding the lysine-deficient (4.30 g/kg), lysine-adequate (7.10 g/kg), or lysine-excess (9.80 g/kg) diet for five weeks, and the total RNA was extracted afterwards. Affymetrix Porcine Gene 1.0 ST Array was used to quantify the expression levels of 19,211 genes...
April 21, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28430127/image-guided-laparoscopic-surgical-tool-iglast-based-on-the-optical-frequency-domain-imaging-ofdi-to-prevent-bleeding
#6
Byung Jun Park, Seung Rag Lee, Hyun Jin Bang, Byung Yeon Kim, Jeong Hun Park, Dong Guk Kim, Sung Soo Park, Young Jae Won
We present an image-guided laparoscopic surgical tool (IGLaST) to prevent bleeding. By applying optical frequency domain imaging (OFDI) to a specially designed laparoscopic surgical tool, the inside of fatty tissue can be observed before a resection, and the presence and size of blood vessels can be recognized. The optical sensing module on the IGLaST head has a diameter of less than 390 µm and is moved back and forth by a linear servo actuator in the IGLaST body. We proved the feasibility of IGLaST by in vivo imaging inside the fatty tissue of a porcine model...
April 21, 2017: Sensors
https://www.readbyqxmd.com/read/28429578/soy-isoflavones-enhance-%C3%AE-defensin-synthesis-and-secretion-in-endometrial-epithelial-cells-with-exposure-to-tlr3-agonist-polyinosinic-polycytidylic-acid
#7
Yotesawee Srisomboon, Sutthasinee Poonyachoti, Chatsri Deachapunya
PROBLEM: β-defensins are important innate chemical barriers that protect the endometrium from pathogen invasion. The effects of soy isoflavones, genistein and daidzein, on the expression and secretion of porcine β-defensins (PBD) in endometrial epithelial cells were investigated under normal or poly I:C-stimulated conditions. METHOD OF STUDY: Primary cultured porcine endometrial epithelial (PE) cells were pretreated with genistein or daidzein followed by poly I:C inoculation...
April 21, 2017: American Journal of Reproductive Immunology: AJRI
https://www.readbyqxmd.com/read/28429287/protective-effect-of-selenoprotein-x-against-oxidative-stress-induced-cell-apoptosis-in-human-hepatocyte-lo2-cells-via-the-p38-pathway
#8
Jia-Yong Tang, Ai-Hua He, Gang Jia, Guang-Mang Liu, Xiao-Ling Chen, Jing-Yi Cai, Hai-Ying Shang, Jin-Qiu Liao, Hua Zhao
Oxidative stress, as mediated by ROS (reactive oxygen species), is a significant factor in initiating the cells damaged by affecting cellular macromolecules and impairing their biological functions; SelX, a selenoprotein also known as MsrB1 belonging to the methionine sulfoxide reductase (Msr) family, is the redox repairing enzyme and involved in redox-related functions. In order to more precisely analyze the relationship between oxidative stress, cell oxidative damage, and SelX, we stably overexpressed porcine Selx full-length cDNA in human normal hepatocyte (LO2) cells...
April 20, 2017: Biological Trace Element Research
https://www.readbyqxmd.com/read/28429132/development-of-a-real-time-recombinase-polymerase-amplification-assay-for-rapid-and-sensitive-detection-of-porcine-circovirus-2
#9
Jianchang Wang, Jinfeng Wang, Libing Liu, Wanzhe Yuan
Porcine diseases associated with porcine circovirus 2 (PCV-2) infection have resulted in significant economic losses worldwide. A real-time recombinase polymerase amplification (RPA) assay was developed to detect PCV-2 using primers and an exo probe specific for the ORF2 gene. The reaction process can be completed in 20 min at 38 °C. The assay only detects PCV-2, as there was no cross-reaction with other pathogens important in pigs. Using the PCV-2 genomic DNA as template, the analytical sensitivity of the real-time RPA was 103 copies...
April 20, 2017: Archives of Virology
https://www.readbyqxmd.com/read/28429087/the-abdoman-an-artificial-abdominal-wall-simulator-for-biomechanical-studies-on-laparotomy-closure-techniques
#10
L F Kroese, J J Harlaar, C Ordrenneau, J Verhelst, G Guérin, F Turquier, R H M Goossens, G-J Kleinrensink, J Jeekel, J F Lange
PURPOSE: Incisional hernia remains a frequent complication after abdominal surgery associated with significant morbidity and high costs. Animal and clinical studies have exhibited some limitations. The purpose of this study was to develop an artificial human abdominal wall (AW) simulator in order to enable investigations on closure modalities. We hypothesized that a physical model of the human AW would give new insight into commonly used suture techniques representing a substantial complement or alternative to clinical and animal studies...
April 20, 2017: Hernia: the Journal of Hernias and Abdominal Wall Surgery
https://www.readbyqxmd.com/read/28428311/complete-genome-characterization-of-chinese-porcine-deltacoronavirus-strain-chn-tianjin-2016
#11
Feng Zhao, Ying Sun, Bingxu Qian, Xiaorong Zhang, Yantao Wu
As we all know, porcine deltacoronavirus was first detected in Hong Kong, China. Here, we report the complete genome sequence of the Chinese porcine deltacoronavirus strain CHN/Tianjin/2016, which was collected and amplified from clinical fecal samples in March of 2016.
April 20, 2017: Genome Announcements
https://www.readbyqxmd.com/read/28426281/identification-of-ssea-1-expressing-enhanced-reprogramming-seer-cells-in-porcine-embryonic-fibroblasts
#12
Dong Li, Jan O Secher, Morten Juhl, Kaveh Mashayekhi, Troels T Nielsen, Bjørn Holst, Poul Hyttel, Kristine K Freude, Vanessa J Hall
Previous research has shown that a subpopulation of cells within cultured human dermal fibroblasts, termed multilineage-differentiating stress enduring (Muse) cells, are preferentially reprogrammed into induced pluripotent stem cells. However, controversy exists over whether these cells are the only cells capable of being reprogrammed from a heterogeneous population of fibroblasts. Similarly, there is little research to suggest such cells may exist in embryonic tissues or other species. In order to address if such a cell population exists in pigs, we investigated porcine embryonic fibroblast populations (pEFs) and identified heterogeneous expression of several key cell surface markers...
April 20, 2017: Cell Cycle
https://www.readbyqxmd.com/read/28426078/an-intravascular-bioartificial-pancreas-device-ibap-with-silicon-nanopore-membranes-snm-for-islet-encapsulation-under-convective-mass-transport
#13
Shang Song, Charles Blaha, Willieford Moses, Jaehyun Park, Nathan Wright, Joey Groszek, William Fissell, Shant Vartanian, Andrew M Posselt, Shuvo Roy
Diffusion-based bioartificial pancreas (BAP) devices are limited by poor islet viability and functionality due to inadequate mass transfer resulting in islet hypoxia and delayed glucose-insulin kinetics. While intravascular ultrafiltration-based BAP devices possess enhanced glucose-insulin kinetics, the polymer membranes used in these devices provide inadequate ultrafiltrate flow rates and result in excessive thrombosis. Here, we report the silicon nanopore membrane (SNM), which exhibits a greater hydraulic permeability and a superior pore size selectivity compared to polymer membranes for use in BAP applications...
April 20, 2017: Lab on a Chip
https://www.readbyqxmd.com/read/28425928/porcine-circoviruses-and-xenotransplantation
#14
REVIEW
Joachim Denner, Annette Mankertz
Allotransplantation and xenotransplantation may be associated with the transmission of pathogens from the donor to the recipient. Whereas in the case of allotransplantation the transmitted microorganisms and their pathogenic effect are well characterized, the possible influence of porcine microorganisms on humans is mostly unknown. Porcine circoviruses (PCVs) are common in pig breeds and they belong to porcine microorganisms that still have not been fully addressed in terms of evaluating the potential risk of xenotransplantation using pig cells, tissues, and organs...
April 20, 2017: Viruses
https://www.readbyqxmd.com/read/28425850/a-novel-and-robust-method-for-testing-bimodality-and-characterizing-porcine-adipocytes-of-adipose-tissue-of-5-purebred-lines-of-pig
#15
Eric D Testroet, Peter Sherman, Chad Yoder, Amber Testroet, Carmen Reynolds, Mathew O'Neil, Soi Meng Lei, Donald C Beitz, Tom J Baas
Adipocyte sizes from adipose tissue of mature animals form a bimodal distribution, thus reporting mean cell size is misleading. The objectives of this study were to develop a robust method for testing bimodality of porcine adipocytes, describe the size distribution with an informative metric, and statistically test hypertrophy and appearance of new small adipocytes, possibly resulting from hyperplasia or lipid filling of previously divided fibroblastic cells. Ninety-three percent of adipose samples measured were bimodal (P < 0...
March 10, 2017: Adipocyte
https://www.readbyqxmd.com/read/28424818/dose-requirements-for-idarucizumab-reversal-of-dabigatran-in-a-lethal-porcine-trauma-model-with-continuous-bleeding
#16
Markus Honickel, Henri M Spronk, Rolf Rossaint, Christian Stoppe, Joanne van Ryn, Hugo Ten Cate, Oliver Grottke
Idarucizumab is licensed for emergency reversal of dabigatran. A single 5 g dose is usually sufficient, but higher doses may sometimes be required and optimum dosing has not been defined. It was the aim of this study to investigate the effect of idarucizumab, given once or as a split dose, after double trauma in pigs anticoagulated with dabigatran. Dabigatran etexilate (30 mg/kg bid) was given to 18 male pigs orally for 3 days. On day 4, animals were randomised 1:1:1 to receive idarucizumab 60+0, 60+60 or 120+0 mg/kg...
April 20, 2017: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/28424790/development-of-isothermal-recombinase-polymerase-amplification-assay-for-rapid-detection-of-porcine-circovirus-type-2
#17
Yang Yang, Xiaodong Qin, Yingjun Sun, Guozheng Cong, Yanmin Li, Zhidong Zhang
Porcine circovirus virus type II (PCV2) is the etiology of postweaning multisystemic wasting syndrome (PMWS), porcine dermatitis, nephropathy syndrome (PDNS), and necrotizing pneumonia. Rapid diagnosis tool for detection of PCV2 plays an important role in the disease control and eradication program. Recombinase polymerase amplification (RPA) assays using a real-time fluorescent detection (PCV2 real-time RPA assay) and RPA combined with lateral flow dipstick (PCV2 RPA LFD assay) were developed targeting the PCV2 ORF2 gene...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28424778/estimation-of-time-dependent-reproduction-numbers-for-porcine-reproductive-and-respiratory-syndrome-across-different-regions-and-production-systems-of-the-us
#18
Andréia G Arruda, Moh A Alkhamis, Kimberly VanderWaal, Robert B Morrison, Andres M Perez
Porcine reproductive and respiratory syndrome (PRRS) is, arguably, the most impactful disease for the North American swine industry, due to its known considerable economic losses. The Swine Health Monitoring Project (SHMP) monitors and reports weekly new PRRS cases in 766 sow herds across the US. The time-dependent reproduction number (TD-R) is a measure of a pathogen's transmissibility. It may serve to capture and report PRRS virus (PRRSV) spread at the regional and system levels. The primary objective of the study here was to estimate the TD-R values for PRRSV using regional and system-level PRRS data, and to contrast it with commonly used metrics of disease, such as incidence estimates and space-time clusters...
2017: Frontiers in Veterinary Science
https://www.readbyqxmd.com/read/28424056/use-of-multi-trait-and-random-regression-models-to-identify-genetic-variation-in-tolerance-to-porcine-reproductive-and-respiratory-syndrome-virus
#19
Graham Lough, Hamed Rashidi, Ilias Kyriazakis, Jack C M Dekkers, Andrew Hess, Melanie Hess, Nader Deeb, Antti Kause, Joan K Lunney, Raymond R R Rowland, Han A Mulder, Andrea Doeschl-Wilson
BACKGROUND: A host can adopt two response strategies to infection: resistance (reduce pathogen load) and tolerance (minimize impact of infection on performance). Both strategies may be under genetic control and could thus be targeted for genetic improvement. Although there is evidence that supports a genetic basis for resistance to porcine reproductive and respiratory syndrome (PRRS), it is not known whether pigs also differ genetically in tolerance. We determined to what extent pigs that have been shown to vary genetically in resistance to PRRS also exhibit genetic variation in tolerance...
April 19, 2017: Genetics, Selection, Evolution: GSE
https://www.readbyqxmd.com/read/28423949/intranasal-chitosan-g-hp%C3%AE-cd-nanoparticles-of-efavirenz-for-the-cns-targeting
#20
Aarti Belgamwar, Shagufta Khan, Pramod Yeole
Incompetence of antiretrovirals (ARV) in complete eradication of HIV from the CNS is the biggest issue in neuro-AIDS treatment. The ineffectiveness is largely due to the poor penetration of ARV. Hence, the present study is attempted to enhance the CNS uptake of efavirenz (EFV) by designing intranasal EFV nanoparticles (EFV-NPs). EFV-NPs were fabricated using chitosan-g-HPβCD by ionic gelation method and optimized using quadratic response surface methodology (RSM) employing two-factor, five-level circumscribed central composite design...
April 19, 2017: Artificial Cells, Nanomedicine, and Biotechnology
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