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https://www.readbyqxmd.com/read/28934662/a-pc-pu-nanoparticle-pu-decellularized-scaffold-composite-vascular-patch-synergistically-optimized-overall-performance-promotes-endothelialization
#1
Jun Zhang, Cheng Liu, Fuling Feng, Dawei Wang, Shuaishuai Lu, Guo Wei, Hong Mo, Tong Qiao
Composite vascular patches have gained increasingly attention due to the limited availability of autologous patches (vascular graft materials made from the blood vessels of the same recipient), the lack of growth capability of nonautologous patches (vascular graft materials made from the blood vessels of a different donor) and the disadvantages of synthetic patches. In this study, we report a highly biocompatible phosphatidylcholine-polyurethane nanoparticle/polyurethane/decellularized scaffold composite vascular patch (PCVP)...
September 6, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28934325/first-report-of-changes-in-leukocyte-morphology-in-response-to-inflammatory-conditions-in-asian-and-african-elephants-elephas-maximus-and-loxodonta-africana
#2
Nicole I Stacy, Ramiro Isaza, Ellen Wiedner
Although the hematology of healthy elephants has been well-described, published information on hematological changes during disease is limited. The objective of this study was to describe qualitative morphological changes in the leukocytes of Asian and African elephants (Elephas maximus and Loxodonta africana) diagnosed with a variety of inflammatory conditions. Twenty-five of 27 elephants had morphological changes in their leukocytes, although only 16 of these had a concurrent inflammatory leukogram. Morphological changes included heterophil left-shifting with or without concurrent dysgranulopoiesis, toxicity, or hypersegmentation, reactive lymphocytes, plasma cells, and/or vacuolated monocytes...
2017: PloS One
https://www.readbyqxmd.com/read/28934231/principal-component-analysis-identifies-patterns-of-cytokine-expression-in-non-small-cell-lung-cancer-patients-undergoing-definitive-radiation-therapy
#3
Susannah G Ellsworth, Bryan M Rabatic, Jie Chen, Jing Zhao, Jeffrey Campbell, Weili Wang, Wenhu Pi, Paul Stanton, Martha Matuszak, Shruti Jolly, Amy Miller, Feng-Ming Kong
BACKGROUND/PURPOSE: Radiation treatment (RT) stimulates the release of many immunohumoral factors, complicating the identification of clinically significant cytokine expression patterns. This study used principal component analysis (PCA) to analyze cytokines in non-small cell lung cancer (NSCLC) patients undergoing RT and explore differences in changes after hypofractionated stereotactic body radiation therapy (SBRT) and conventionally fractionated RT (CFRT) without or with chemotherapy...
2017: PloS One
https://www.readbyqxmd.com/read/28934222/endogenous-rgs14-is-a-cytoplasmic-nuclear-shuttling-protein-that-localizes-to-juxtanuclear-membranes-and-chromatin-rich-regions-of-the-nucleus
#4
Mary Rose Branch, John R Hepler
Regulator of G protein signaling 14 (RGS14) is a multifunctional scaffolding protein that integrates G protein and H-Ras/MAPkinase signaling pathways to regulate synaptic plasticity important for hippocampal learning and memory. However, to date, little is known about the subcellular distribution and roles of endogenous RGS14 in a neuronal cell line. Most of what is known about RGS14 cellular behavior is based on studies of tagged, recombinant RGS14 ectopically overexpressed in unnatural host cells. Here, we report for the first time a comprehensive assessment of the subcellular distribution and dynamic localization of endogenous RGS14 in rat B35 neuroblastoma cells...
2017: PloS One
https://www.readbyqxmd.com/read/28934137/evidence-for-involvement-of-il-9-and-il-22-in-cows-milk-allergy-in-infants
#5
Karina V Barros, Vera L Flor Silveira, Marisa S Laranjeira, Neusa F Wandalsen, Susana Passeti, Roberta de Oliveira, Regina V Munekata, Paul S Noakes, Elizabeth A Miles, Philip C Calder
Although allergic inflammation is characterized by a T helper (Th) 2-dominant immune response, the discovery of a role for new T cell subsets in inflammatory diseases has added an additional layer of complexity to the understanding of the pathogeneses of allergic diseases. We evaluated plasma cytokine profiles in infants with cows' milk allergy (CMA), who were being treated with an elimination diet. In a prospective, randomized and controlled study, infants (aged 8.4 ± 3.9 months) with CMA were treated with an elimination diet for 120 days, which replaced cows' milk with a hydrolysed soy protein formula (n = 26) or a free amino acid formula (n = 20)...
September 21, 2017: Nutrients
https://www.readbyqxmd.com/read/28934133/understanding-the-mechanism-of-translocation-of-adenylate-cyclase-toxin-across-biological-membranes
#6
REVIEW
Helena Ostolaza, César Martín, David González-Bullón, Kepa B Uribe, Asier Etxaniz
Adenylate cyclase toxin (ACT) is one of the principal virulence factors secreted by the whooping cough causative bacterium Bordetella pertussis, and it has a critical role in colonization of the respiratory tract and establishment of the disease. ACT targets phagocytes via binding to the CD11b/CD18 integrin and delivers its N-terminal adenylate cyclase (AC) domain directly to the cell cytosol, where it catalyzes unregulated conversion of cytosolic ATP into cAMP upon activation by binding to cellular calmodulin...
September 21, 2017: Toxins
https://www.readbyqxmd.com/read/28934132/surface-modification-of-polymer-substrates-for-biomedical-applications
#7
REVIEW
Oldřich Neděla, Petr Slepička, Václav Švorčík
While polymers are widely utilized materials in the biomedical industry, they are rarely used in an unmodified state. Some kind of a surface treatment is often necessary to achieve properties suitable for specific applications. There are multiple methods of surface treatment, each with their own pros and cons, such as plasma and laser treatment, UV lamp modification, etching, grafting, metallization, ion sputtering and others. An appropriate treatment can change the physico-chemical properties of the surface of a polymer in a way that makes it attractive for a variety of biological compounds, or, on the contrary, makes the polymer exhibit antibacterial or cytotoxic properties, thus making the polymer usable in a variety of biomedical applications...
September 21, 2017: Materials
https://www.readbyqxmd.com/read/28933769/a-lanosteryl-triterpene-from-protorhus-longifolia-improves-glucose-tolerance-and-pancreatic-beta-cell-ultrastructure-in-type-2-diabetic-rats
#8
Sihle E Mabhida, Rebamang A Mosa, Dambudzo Penduka, Foluso O Osunsanmi, Phiwayinkosi V Dludla, Tryana G Djarova, Andy R Opoku
Type 2 diabetes remains one of the leading causes of death worldwide. Persistent hyperglycemia within a diabetic state is implicated in the generation of oxidative stress and aggravated inflammation that is responsible for accelerated modification of pancreatic beta cell structure. Here we investigated whether a lanosteryl triterpene, methyl-3β-hydroxylanosta-9,24-dien-21-oate (RA-3), isolated from Protorhus longifolia can improve glucose tolerance and pancreatic beta cell ultrastructure by reducing oxidative stress and inflammation in high fat diet and streptozotocin-induced type 2 diabetes in rats...
July 26, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28933663/type-iii-hypersensitivity-reactions-to-a-b-cell-epitope-antigen-are-abrogated-using-a-depot-forming-vaccine-platform
#9
Lisa D MacDonald, Alecia MacKay, Valarmathy Kaliaperumal, Genevieve Weir, Andrea Penwell, Rajkannan Rajagopalan, Joanne Langley, Scott Halperin, Marc Mansour, Marianne M Stanford
Peptide antigens are combined with an adjuvant in order to increase immunogenicity in vivo. The immunogenicity and safety of a RSV vaccine formulated in a novel oil-based platform, DepoVax™ (DPX), was compared to an alum formulation. A peptide B cell epitope derived from RSV small hydrophobic ectodomain (SHe) served as the antigen. Both vaccines induced SHe-specific antibodies after immunization of mice. A single dose of the DPX-based formulation resulted in anti-SHe titres for up to 20 weeks. Boosting with Alum-SHe, but not with DPX-SHe, led to unexpected clinical signs such as decreased activity, cyanosis and drop in body temperature in mice but not in rabbits...
September 21, 2017: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/28933649/legionella-blocks-autophagy-by-cleaving-stx17-syntaxin-17
#10
Kohei Arasaki, Mitsuo Tagaya
Pathogens subvert host defense systems including autophagy and apoptosis for their survival and proliferation. Legionella pneumophila is a Gram-negative bacterium that grows in alveolar macrophages and causes severe pneumonia. Early during infection Legionella secretes effector proteins that convert the plasma membrane-derived vacuole containing Legionella into an endoplasmic reticulum (ER)-like replicative vacuole. These vacuoles ultimately fuse with the ER, where the pathogen replicates. Recently, we showed that one of the effectors, Lpg1137, is a serine protease that targets the mitochondria-associated ER membrane (MAM) and degrades STX17 (syntaxin 17), a SNARE implicated in macroautophagy/autophagy as well as mitochondria dynamics and membrane trafficking in fed cells...
September 21, 2017: Autophagy
https://www.readbyqxmd.com/read/28933644/development-and-optimization-of-a-sensitive-pseudovirus-based-assay-for-hiv-1-neutralizing-antibodies-detection-using-a3r5-cells
#11
Qingqing Chen, Jianhui Nie, Weijin Huang, Yanmei Jiao, Lan Li, Tong Zhang, Juan Zhao, Hao Wu, Youchun Wang
Sensitive assays for HIV-1 neutralizing antibody detection are urgently needed for vaccine immunogen optimization and identification of protective immune response levels. In this study, we developed an easy-to-use HIV-1 pseudovirus neutralization assay based on a human CD4(+) lymphoblastoid cell line A3R5 by employing a high efficient pseudovirus production system. Optimal conditions for cell counts, infection time, virus dose and concentration of DEAE-dextran were tested and identified. For T-cell line-adapted tier 1 virus strains, significantly higher inhibitory efficiency was observed for both monoclonal neutralizing antibody (4 fold) and plasma (2 fold) samples in A3R5 than those in TZM-bl assay...
September 21, 2017: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/28933603/autophagy-enables-retromer-dependent-plasma-membrane-translocation-of-slc2a1-glut-to-enhance-glucose-uptake
#12
Srirupa Roy, Jayanta Debnath
Macroautophagy/autophagy is traditionally viewed as an intracellular catabolic pathway that recycles core metabolites during starvation or stress. Recently, we found that autophagy also functions in the control of glucose uptake from the extracellular environment by facilitating cell surface expression of the glucose transporter SLC2A1/GLUT1. In response to increased glycolytic demand or acute glucose starvation, autophagosome induction titrates the RabGAP protein TBC1D5 away from its inhibitory interaction with the retromer complex and into MAP1LC3(+) compartments...
September 21, 2017: Autophagy
https://www.readbyqxmd.com/read/28933593/dynein-promotes-porcine-oocyte-meiotic-progression-by-maintaining-cytoskeletal-structures-and-cortical-granule-arrangement
#13
Yilong Miao, Changyin Zhou, Zhaokang Cui, Liansheng Tang, Xiayan ShiYang, Yajuan Lu, Mianqun Zhang, Xiaoxin Dai, Bo Xiong
Cytoplasmic dynein is a family of cytoskeletal motor proteins that move towards the minus-end of the microtubules to perform functions in a variety of mitotic processes such as cargo transport, organelle positioning, chromosome movement and centrosome assembly. However, its specific roles during mammalian oocyte meiosis have not been fully defined. Herein, we investigated the critical events during porcine oocyte meiotic maturation after inhibition of dynein by Ciliobrevin D treatment. We found that oocyte meiotic progression was arrested when inhibited of dynein by showing the poor expansion of cumulus cells and decreased rate of polar body extrusion...
September 21, 2017: Cell Cycle
https://www.readbyqxmd.com/read/28933362/male-infertility-the-effect-of-natural-antioxidants-and-phytocompounds-on-seminal-oxidative-stress
#14
REVIEW
Malik Adewoyin, Muhammad Ibrahim, Ramli Roszaman, Muhammad Lokman Md Isa, Nur Aizura Mat Alewi, Ainin Azwani Abdul Rafa, Mohd Nur Nasyriq Anuar
Defective sperm function has been identified as the most common cause of infertility. The objective of this study was to review recent findings on the effects of various antioxidants on male fertility. High amounts of poly unsaturated fatty acid are found in the mammalian spermatozoa membranes, thereby making them susceptible to lipid peroxidation. Although, free radicals and reactive oxygen species (ROS) play major roles in reproduction, they are strongly associated with oxidative stress. Furthermore, factors such as obesity, inflammation, pollutants and cigarette smoking are negatively correlated with spermatogenesis...
March 1, 2017: Diseases (Basel)
https://www.readbyqxmd.com/read/28933264/from-a-better-understanding-of-the-mechanisms-of-action-of-histone-deacetylases-inhibitors-to-the-progress-of-the-treatment-of-malignant-lymphomas-and-plasma-cell-myeloma
#15
Romeo-Gabriel Mihăilă
BACKGROUND: Notable progress has been made in chemo- and immunotherapy of B-cell lymphomas, but less in the treatment of T-cell lymphomas. OBJECTIVE: Histone deacetylases inhibitors are a potentially useful therapeutic mean, as an epigenetic dysregulation is present in lymphomas, and especially in T-cell types. We aimed to study the progress made in this area. METHOD: A minireview was achieved using the articles published in PubMed in the last two years and the new patents made in this field...
September 19, 2017: Recent Patents on Anti-cancer Drug Discovery
https://www.readbyqxmd.com/read/28933124/-analysis-on-pharmacokinetics-pharmacodynamics-correlation-of-effective-ingredients-of-qing-e-wan
#16
Ling Liu, Ze-Bin Weng, Heng Wang, Xing-Yu Zhu, Zhi-Peng Chen, Li Wu, Wei-Dong Li
To study the pharmacokinetics of three active ingredients in Qing'e wan, namely geniposidic acid, psoralen and isopsoralen, in rats, in order to investigate their correlation in the anti-osteoporotic effect. The rats were taken blood from their eye sockets at different time points after being orally administered with raw and salt-processed Qing'e wan. Geniposidic acid, psoralen and isopsoralen in rats plasma were determined by means of UHPLC-MS/MS to draw the concentration-time curve. The proliferation rate of osteoblasts was taken as the pharmacodynamic index, and determined by MTT method to draw effect-time curve...
December 2016: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/28932824/factor-viia-interaction-with-epcr-modulates-the-hemostatic-effect-of-rfviia-in-hemophilia-therapy-mode-of-its-action
#17
Shiva Keshava, Jagan Sundaram, Anuradha Rajulapati, Charles Esmon, Usha Pendurthi, L Vijaya Mohan Rao
Recent studies established that clotting factor VIIa (FVIIa) binds endothelial cell protein C receptor (EPCR). It has been speculated that FVIIa interaction with EPCR might augment the hemostatic effect of rFVIIa in therapeutic conditions. The present study is carried out to investigate the mechanism by which FVIIa interaction with EPCR contributes to the hemostatic effect of rFVIIa in hemophilia therapy. Active-site inhibited FVIIa, which is capable of binding to EPCR but has no ability to activate factor X, reduced the concentration of rFVIIa required to correct the bleeding following the saphenous vein injury in mouse hemophilia model systems...
June 27, 2017: Blood Advances
https://www.readbyqxmd.com/read/28932819/iga-and-igm-protein-primarily-drive-plasma-corona-induced-adhesion-reduction-of-plga-nanoparticles-in-human-blood-flow
#18
Daniel J Sobczynski, Omolola Eniola-Adefeso
The high abundance of immunoglobulins (Igs) in the plasma protein corona on poly(lactic-co-glycolic) acid (PLGA)-based vascular-targeted carriers (VTCs) has previously been shown to reduce their adhesion to activated endothelial cells (aECs) in human blood flow. However, the relative role of individual Ig classes (e.g., IgG, IgA, and IgM) in causing adhesion reduction remains largely unknown. Here, we characterized the influence of specific Ig classes in prescribing the binding efficiency of PLGA nano-sized VTCs in blood flow...
June 2017: Bioengineering & Translational Medicine
https://www.readbyqxmd.com/read/28932581/catch-me-if-you-can-how-to-make-the-best-use-of-pleural-effusion
#19
Lianjun Lin, Qian Han, Zhonghui Liu, Huiying Xu, Yanping Wu, Jixin Zhang, Xinmin Liu
Etiology diagnosis of pleural effusion is a commonly encountered yet challenging problem. How to make the best use of pleural effusion evokes thinking. Myelomatous pleural effusion (MPE) is a rare condition and has been reported sporadically. We report an extremely rare case of multiple myeloma (MM) [IgD-lambda (λ) type, stage III B] with MPE as initial presentation and complicated with massive pericardial effusions during the progression of the disease. Cytological identification of malignant plasma cells in pleural effusion is the most direct method to diagnose MPE...
August 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28932254/branched-chain-amino-acid-supplementation-restores-reduced-insulinotropic-activity-of-a-low-protein-diet-through-the-vagus-nerve-in-rats
#20
Mami Horiuchi, Tomoya Takeda, Hiroyuki Takanashi, Yori Ozaki-Masuzawa, Yusuke Taguchi, Yuka Toyoshima, Lila Otani, Hisanori Kato, Meri Sone-Yonezawa, Fumihiko Hakuno, Shin-Ichiro Takahashi, Asako Takenaka
BACKGROUND: Previously, we reported that a low-protein diet significantly reduced insulin secretion in response to feeding within 1 h in rats, suggesting that the insulinotropic effect of dietary protein plays an important role in maintaining normal insulin release. The current study aimed to elucidate whether deficiency of certain amino acids could diminish the insulinotropic activity and to investigate whether reduced insulin secretion in response to a low-protein diet is restored by supplementation with certain amino acids...
2017: Nutrition & Metabolism
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