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https://www.readbyqxmd.com/read/28804824/laboratory-testing-for-activated-protein-c-resistance-apcr
#1
Soma Mohammed, Emmanuel J Favaloro
Activated protein C resistance (APCR) describes a hemostatic disorder characterized by a poor anticoagulant response to activated protein C (APC). This results in an increased risk of venous thrombosis, including deep vein thrombosis and pulmonary embolism. Protein C is a natural anticoagulant that is synthesized in the liver and is activated to APC via proteolysis. APC then degrades Factors Va and VIIIa. APCR describes the reduced inability of APC to cleave Factors Va and VIIIa, which therefore promotes increased thrombin generation and potentially leads to a prothrombotic state...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28801063/chondroitin-sulfates-do-not-impede-axonal-regeneration-in-goldfish-spinal-cord
#2
Akihito Takeda, Soichiro Okada, Kengo Funakoshi
Chondroitin sulfate proteoglycans produced in glial scar tissue are a major inhibitory factor for axonal regeneration after central nervous system injury in mammals. The inhibition is largely due to chondroitin sulfates, whose effects differ according to the sulfation pattern. In contrast to mammals, fish nerves spontaneously regenerate beyond the scar tissue after spinal cord injury, although the mechanisms that allow for axons to pass through the scar are unclear. Here, we used immunohistochemistry to examine the expression of two chondroitin sulfates with different sulfation variants at the lesion site in goldfish spinal cord...
August 8, 2017: Brain Research
https://www.readbyqxmd.com/read/28798782/evaluation-of-local-carotid-stiffness-and-inflammatory-biomarkers-in-stable-angina-pectoris
#3
Abdullah Nabi Aslan, Ayşe Nur Özcan, Hüseyin Ayhan, Serkan Sivri, Filiz Çelebi, Karabekir Ercan, Tahir Durmaz
INTRODUCTION: Arterial stiffness (AS) is a well-accepted and reliable predictor of atherosclerotic diseases. Inflammation plays an important role in the development of AS. AIM: To evaluate local carotid stiffness (CS) together with fibrinogen and high-sensitivity C-reactive protein (hsCRP) levels in stable angina pectoris (SAP) patients. MATERIAL AND METHODS: The study consisted of 353 consecutive patients with SAP. All underwent coronary angiography (CAG) after the evaluation of local CS parameters and carotid intima-media thickness (IMT) from both common carotid arteries by a real-time echo-tracking system...
2017: Postępy W Kardiologii Interwencyjnej, Advances in Interventional Cardiology
https://www.readbyqxmd.com/read/28797092/studies-of-the-antitumor-mechanism-of-action-of-dermaseptin-b2-a-multifunctional-cationic-antimicrobial-peptide-reveal-a-partial-implication-of-cell-surface-glycosaminoglycans
#4
Célia Dos Santos, Sabah Hamadat, Karen Le Saux, Clara Newton, Meriem Mazouni, Loussiné Zargarian, Mickael Miro-Padovani, Patricia Zadigue, Jean Delbé, Yamina Hamma-Kourbali, Mohamed Amiche
Dermaseptin-B2 (DRS-B2) is a multifunctional cationic antimicrobial peptide (CAP) isolated from frog skin secretion. We previously reported that DRS-B2 possesses anticancer and antiangiogenic activities in vitro and in vivo. In the present study, we evaluated the antiproliferative activity of DRS-B2 on numerous tumor cell lines, its cell internalization and studies of its molecular partners as well as their influences on its structure. Confocal microscopy using ([Alexa594]-(Cys0)-DRS-B2) shows that in sensitive human tumor cells (PC3), DRS-B2 seems to accumulate rapidly at the cytoplasmic membranes and enters the cytoplasm and the nucleus, while in less sensitive tumor cells (U87MG), DRS-B2 is found packed in vesicles at the cell membrane...
2017: PloS One
https://www.readbyqxmd.com/read/28796045/with-a-little-help-from-a-computer-discriminating-between-bacterial-and-viral-meningitis-based-on-dominance-based-rough-set-approach-analysis
#5
Ewelina Gowin, Danuta Januszkiewicz-Lewandowska, Roman Słowiński, Jerzy Błaszczyński, Michał Michalak, Jacek Wysocki
Differential Diagnosis of bacterial and viral meningitis remains an important clinical problem. A number of methods to assist in the diagnoses of meningitis have been developed, but none of them have been found to have high specificity with 100% sensitivity.We conducted a retrospective analysis of the medical records of 148 children hospitalized in St. Joseph Children's Hospital in Poznań. In this study, we applied for the first time the original methodology of dominance-based rough set approach (DRSA) to diagnostic patterns of meningitis data and represented them by decision rules useful in discriminating between bacterial and viral meningitis...
August 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28772425/laser-sintered-magnesium-calcium-silicate-poly-%C3%AE%C2%B5-caprolactone-scaffold-for-bone-tissue-engineering
#6
Kuo-Yang Tsai, Hung-Yang Lin, Yi-Wen Chen, Cheng-Yao Lin, Tuan-Ti Hsu, Chia-Tze Kao
In this study, we manufacture and analyze bioactive magnesium-calcium silicate/poly-ε-caprolactone (Mg-CS/PCL) 3D scaffolds for bone tissue engineering. Mg-CS powder was incorporated into PCL, and we fabricated the 3D scaffolds using laser sintering technology. These scaffolds had high porosity and interconnected-design macropores and structures. As compared to pure PCL scaffolds without an Mg-CS powder, the hydrophilic properties and degradation rate are also improved. For scaffolds with more than 20% Mg-CS content, the specimens become completely covered by a dense bone-like apatite layer after soaking in simulated body fluid for 1 day...
January 13, 2017: Materials
https://www.readbyqxmd.com/read/28768501/hybrid-clone-cells-derived-from-human-breast-epithelial-cells-and-human-breast-cancer-cells-exhibit-properties-of-cancer-stem-initiating-cells
#7
Daria Gauck, Silvia Keil, Bernd Niggemann, Kurt S Zänker, Thomas Dittmar
BACKGROUND: The biological phenomenon of cell fusion has been associated with cancer progression since it was determined that normal cell × tumor cell fusion-derived hybrid cells could exhibit novel properties, such as enhanced metastatogenic capacity or increased drug resistance, and even as a mechanism that could give rise to cancer stem/initiating cells (CS/ICs). CS/ICs have been proposed as cancer cells that exhibit stem cell properties, including the ability to (re)initiate tumor growth...
August 2, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28767736/cigarette-smoke-induced-autophagy-impairment-regulates-amd-pathogenesis-mechanisms-in-arpe-19-cells
#8
Viren Kumar Govindaraju, Manish Bodas, Neeraj Vij
Age related macular degeneration (AMD) is one of the leading causes of blindness. Genetics, environmental insult, and age-related factors all play a key role in altering proteostasis, the homeostatic process regulating protein synthesis, degradation and processing. These factors also play a role in the pathogenesis of AMD and it has been well established that cigarette smoking (CS) initiates AMD pathogenic mechanisms. The primary goal of this study is to elucidate whether CS can induce proteostasis/autophagy-impairment in retinal pigment epithelial (RPE) cells...
2017: PloS One
https://www.readbyqxmd.com/read/28767040/hydrogen-peroxide-modified-egg-albumen-for-transparent-and-flexible-resistive-switching-memory
#9
Qunliang Song, Guang-Dong Zhou, Yanqing Yao, Zhisong Lu, Xiude Yang, Juanjuan Han, Gang Wang, Xi Rao, Ping Li, Qian Liu
Egg albumen is modified by hydrogen peroxide with the concentration of 5%, 10%, 15% and 30% at room temperature. Compared with the devices without modification, a memory cell of Ag/10% H2O2-Egg Albumen/Indium tin oxide exhibits an obviously enhanced resistive switching memory behavior with resistance ratio of 104, self-healing switching endurance for 900 cycles and prolong retention time for 104 seconds @ 200 mV reading voltage after bending 103 times. The breakage of massive protein chains occur followed by recombination of a new protein chain networks due to the oxidation of amidogen and synthesis of disulfide during hydrogen peroxide modifying egg albumen...
August 2, 2017: Nanotechnology
https://www.readbyqxmd.com/read/28765265/is-myometrial-inflammation-a-cause-or-a-consequence-of-term-human-labour
#10
Natasha Singh, Bronwen Herbert, Gavin Sooranna, Nic Orsi, Lydia Edey, Tathagata Dasgupta, S R Sooranna, Steve Yellon, M R Johnson
Myometrial inflammation is thought to have a pivotal role in the onset of term and some forms of preterm labour. This is based on the comparison of samples taken from women undergoing term elective CS prior to the onset of labour with those taken from women in established labour. Consequently, it is not clear whether myometrial inflammation is a cause or a consequence of labour. Our objective is to test the hypothesis that myometrial inflammation is a consequence of the onset of labour. To test this hypothesis we have obtained myometrial samples from women at various stages of pregnancy and spontaneous labour and studied the activation of the AP-1 (c-Jun) and NFκB (p65) systems, cytokine mRNA expression and protein levels and inflammatory cell infiltration and activation...
August 1, 2017: Journal of Endocrinology
https://www.readbyqxmd.com/read/28758930/treatment-of-human-placental-choriocarcinoma-cells-with-formaldehyde-and-benzene-induced-growth-and-epithelial-mesenchymal-transition-via-induction-of-an-antioxidant-effect
#11
Hae-Miru Lee, Soo-Min Kim, Kyung-Chul Choi
Cigarette smoke (CS) causes about 480,000 deaths each year worldwide, and it is well-known to have harmful effects on the human body, leading to heart disease, stroke, lung cancer, and cardiovascular problems. In this study, the effects of formaldehyde (FA) and benzene (Bz), the main components of CS, on cell proliferation and epithelial mesenchymal transition (EMT) of JEG-3 human choriocarcinoma cells were examined to confirm the relationship between CS components and placenta carcinoma. Upon MTT assay, FA (10(-8) M to 10(-5) M) and Bz (10(-11) M to 10(-8) M) increased JEG-3 cell proliferation...
July 29, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28757436/etanercept-and-corticosteroid-therapy-for-the-treatment-of-late-onset-idiopathic-pneumonia-syndrome
#12
Jonathan Thompson, Ziyan Yin, Anita D'Souza, Timothy Fenske, Mehdi Hamadani, Parameswaran Hari, J Douglas Rizzo, Marcelo Pasquini, Wael Saber, Nirav Shah, Bronwen E Shaw, Kaushik Shahir, Anjishnu Banerjee, William R Drobyski
Idiopathic pneumonia syndrome (IPS) is a complication of allogeneic hematopoietic stem cell transplantation (HSCT) that typically occurs within the first 100 days after transplantation. Tumor necrosis alpha-α (TNF-α) has been shown to be a key mediator of IPS, and the TNF-α binding protein, etanercept, appears to improve IPS outcomes in small retrospective and prospective studies. IPS has also been observed to occur later (>100 days) after HSCT; however, little is known about the disease course and whether a TNF-α-based therapeutic strategy is efficacious in these patients...
July 27, 2017: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/28756608/inhibition-of-chondroitin-sulfate-glycosaminoglycans-incorporation-affected-odontoblast-differentiation-in-cultured-embryonic-mouse-molars
#13
Lipei Liu, Weiting Chen, Lefeng Li, Fangfang Xu, Beizhan Jiang
Chondroitin sulfate proteoglycan (CSPG) is an important component of extracellular matrix (ECM), it is composed of a core protein and one or more chondroitin sulfate glycosaminoglycan side chains (CS-GAGs). To investigate the roles of its CS-GAGs in dentinogenesis, the mouse mandibular first molar tooth germs at early bell stage were cultivated with or without β-xyloside. As expected, the CS-GAGs were inhibited on their incorporation to CSPGs by β-xyloside, accompanied by the change of morphology of the cultured tooth germs...
July 29, 2017: Journal of Molecular Histology
https://www.readbyqxmd.com/read/28755539/simultaneous-inhibition-of-growth-and-metastasis-of-hepatocellular-carcinoma-by-co-delivery-of-ursolic-acid-and-sorafenib-using-lactobionic-acid-modified-and-ph-sensitive-chitosan-conjugated-mesoporous-silica-nanocomplex
#14
Ruirui Zhao, Tao Li, Guirong Zheng, Kai Jiang, Lulu Fan, Jingwei Shao
Co-delivery multiple drugs using nanocarriers has been recognized as a promising strategy for cancer treatment to enhance therapeutic efficacy. In this study, a pH sensitive mesoporous silica nanoparticles (MSN) based controlled release nanoparticles for co-delivery of sorafenib (SO), a multi-tyrosine kinase inhibitor, and ursolic acid (UA), a sensitive agent for SO, was developed, which was decorated with pH sensitive chitosan (CS) and lactobionic acid (LA) targeting to asialoglycoprotein receptor (ASGPR) over-expressing hepatocellar carcinoma cells (denoted as USMNs-CL)...
July 22, 2017: Biomaterials
https://www.readbyqxmd.com/read/28754854/anti-cancer-efficacy-of-biotinylated-chitosan-nanoparticles-in-liver-cancer
#15
Mingrong Cheng, Weiping Zhu, Qing Li, Dejian Dai, Yiming Hou
The present study investigated the synthesis of biotinylated chitosan (Bio-CS) from chitosan using a nanomaterial skeleton with biotin and the successful targeting of the formulation in liver cancer cells. Bio-CS was validated by fourier transformed infrared spectroscopy and hydrogen-1 nuclear magnetic resonance spectroscopy. Bio-CS and plasmid DNA were used to construct Bio-CS/plasmid DNA nanoparticles according to the optimal molar ratio of 1:1 and the optimal pH-value of 5.5. Under these conditions, the parameters mean particle size, potential, encapsulation rate and drug loading, were 82...
July 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/28743557/a-high-fat-high-protein-diet-attenuates-the-negative-impact-of-casein-induced-chronic-inflammation-on-testicular-steroidogenesis-and-sperm-parameters-in-adult-mice
#16
Jing-Lu Zhao, Yu-Yun Zhao, Wei-Jie Zhu
The interaction between obesity and chronic inflammation has been studied. Diet-induced obesity or chronic inflammation could reduce the testicular functions of males. However, the mechanism underlying the reproductive effects of fattening foods in males with or without chronic inflammation still needs further discussion. This study was aimed to investigate the effects of high-fat, high-protein diet on testicular steroidogenesis and sperm parameters in adult mice under physiological and chronic inflammatory conditions...
July 22, 2017: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/28739506/glycosaminoglycans-from-marine-sources-as-therapeutic-agents
#17
REVIEW
Jesus Valcarcel, Ramón Novoa-Carballal, Ricardo Pérez-Martín, Rui L Reis, José Antonio Vázquez
Glycosaminoglycans (GAGs) in marine animals are different to those of terrestrial organisms, mainly in terms of molecular weight and sulfation. The therapeutic properties of GAGs are related to their ability to interact with proteins, which is very much influenced by sulfation position and patterns. Since currently GAGs cannot be chemically synthesized, they are sourced from natural products, with high intra- but also inter-species variability, in terms of chain length, disaccharide composition and sulfation pattern...
July 21, 2017: Biotechnology Advances
https://www.readbyqxmd.com/read/28738896/real-time-reverse-transcription-pcr-based-sequencing-independent-pathotyping-of-eurasian-avian-influenza-a-viruses-of-subtype-h7
#18
Annika Graaf, Martin Beer, Timm Harder
Low pathogenic avian influenza viruses (LPAIV) of the subtypes H5 and H7 are known to give rise to highly pathogenic (HP) phenotypes by spontaneous insertional mutations which convert a monobasic trypsin-sensitive endoproteolytical cleavage site (CS) within the hemagglutinin (HA) protein into a polybasic subtilisin-sensitive one. Sporadic outbreaks of notifiable LPAIV H7 infections are continuously recorded in Europe and in Asia, and some lineages showed zoonotic transmission. De novo generation of HPAIV H7 from LPAIV precursors has been reported several times over the past decade...
July 24, 2017: Virology Journal
https://www.readbyqxmd.com/read/28738662/highly-efficient-enrichment-of-low-abundance-intact-proteins-by-core-shell-structured-fe3o4-chitosan-graphene-composites
#19
Peng Zhang, Xiaoni Fang, Guoquan Yan, Mingxia Gao, Xiangmin Zhang
In proteomics research, the screening and monitoring of disease biomarkers is still a major challenge, mainly due to their low concentration in biological samples. However, the universal enrichment of intact proteins has not been further studied. In this work, we developed a Fe3O4-chitosan@graphene (Fe3O4-CS@G) core-shell composite to enrich low-abundance proteins from biological samples. Fe3O4-CS@G composite holds chitosan layer decorated Fe3O4 core, which improves the hydrophilicity of materials greatly. Meanwhile, the graphene nanosheets shell formed via electrostatic assembly endows the composite with huge surface area (178m(2)/g)...
November 1, 2017: Talanta
https://www.readbyqxmd.com/read/28723843/no-superior-adaptations-to-carbohydrate-periodization-in-elite-endurance-athletes
#20
Kasper Degn Gejl, Line Thams, Mette Hansen, Torben Rokkedal-Lausch, Peter Plomgaard, Lars Nybo, Filip J Larsen, Daniele A Cardinale, Kurt Jensen, Hans-Christer Holmberg, Kristian Vissing, Niels Ørtenblad
PURPOSE: The present study investigated the effects of periodic CHO restriction on endurance performance and metabolic markers in elite endurance athletes. METHODS: Twenty-six male elite endurance athletes (VO2max: 65.0 ml O2[BULLET OPERATOR]kg[BULLET OPERATOR]min) completed 4 weeks of regular endurance training, while matched and randomized into two groups training with (Low) or without (High) carbohydrate (CHO) manipulation three days a week. The CHO manipulation days consisted of a 1-hr high intensity bike session in the morning, recovery for 7 hrs while consuming isocaloric diets containing either high CHO (414±2...
July 19, 2017: Medicine and Science in Sports and Exercise
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