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https://www.readbyqxmd.com/read/28735510/fxa-inhibition-by-rivaroxaban-modifies-mechanisms-associated-with-the-pathogenesis-of-human-abdominal-aortic-aneurysms
#1
G Moñux, J J Zamorano-León, P Marqués, B Sopeña, J M García-García, G Laich de Koller, B Calvo-Rico, M A García-Fernandez, J Serrano, A López-Farré
AIM: To evaluate if Rivaroxaban, an oral factor Xa (FXa) inhibitor, could in vitro modify the expression of inflammatory and oxidative stress biomarkers in abdominal aortic aneurysmal (AAA) sites showing intraluminal thrombus. METHODS: AAA sites with intraluminal mural thrombus were obtained from six patients undergoing elective AAA repair. In addition, control abdominal aortic samples were obtained from six organ donors. AAA sites were incubated in the presence and absence of 50 nmol/L Rivaroxaban...
July 23, 2017: British Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/28735418/gap-junction-communication-between-chromaffin-cells-the-hidden-face-of-adrenal-stimulus-secretion-coupling
#2
REVIEW
Nathalie C Guérineau
From birth to death, catecholamine secretion undergoes continuous adjustments, allowing the organism to adapt to homeostasis changes. To cope with these stressful conditions, the neuroendocrine cells of the adrenal medulla play an immediate and crucial role. Chromaffin cell-driven catecholamine release is chiefly controlled by a neurogenic command that arises from the sympathetic nervous system, which releases acetylcholine at the splanchnic nerve terminal-chromaffin cell synapses. In addition to receiving several synaptic inputs individually, chromaffin cells are coupled by gap junctions...
July 22, 2017: Pflügers Archiv: European Journal of Physiology
https://www.readbyqxmd.com/read/28735319/intracellular-siderophore-detection-in-an-egyptian-cobalt-treated-f-solani-isolate-using-sem-edx-with-reference-to-its-tolerance
#3
Rasha M Farrag
An Egyptian, plant pathogenic Fusarium solani isolate was grown on cobalt concentrations of 0, 50, 200, 500, 800, and 1000 ppm. The isolate survived concentrations up to 800 ppm, however failed to grow at 1000 ppm. Morphology and elemental analysis of the isolate under the investigated Co concentrations were studied using Scanning electron microscopy (SEM) and energy dispersive X-ray microanalysis (EDX). The isolate reserved its morphology up to a concentration of 200 ppm. Morphological distortions were dramatic at 500 and 800 ppm...
July 6, 2017: Polish Journal of Microbiology
https://www.readbyqxmd.com/read/28735219/electrodeposition-to-construct-free-standing-chitosan-layered-double-hydroxides-hydro-membrane-for-electrically-triggered-protein-release
#4
Pengkun Zhao, Yanan Zhao, Ling Xiao, Hongbing Deng, Yumin Du, Yun Chen, Xiaowen Shi
In this study, we report the electrodeposition of a chitosan/layered double hydroxides (LDHs) hydro-membrane for protein release triggered by an electrical signal. The electrodeposition was performed in a chitosan and insulin loaded LDHs suspension in the absence of salt. A free-standing chitosan/LDHs hydro-membrane was generated on the electrode with improved mechanical properties, which is dramatically different from the weak hydrogel deposited in the presence of salt. The amount of LDHs in the hydro-membrane affects the optical transmittance and multilayered structure of the hybrid membrane...
July 13, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28735186/development-of-a-robust-reporter-gene-assay-to-measure-the-bioactivity-of-anti-pd-1-anti-pd-l1-therapeutic-antibodies
#5
Lan Wang, Chuanfei Yu, Yalan Yang, Kai Gao, Junzhi Wang
Being regarded as the 'cancer panacea', the anti-PD-1/anti-PD-L1 monoclonal antibodies (mAbs) have become the R&D focus of biopharmaceutical industries. Several marketed such mAbs have been proved particularly effective in treating various cancers. However, the cell-based bioassay to measure the biological activities of the anti-PD-1/anti-PD-L1 mAbs as the lot release or stability test has been a great challenge to quality control laboratories due to the immunomodulating nature of the mAbs. Here, we describe the development and validation of a reporter gene assay consisting of two-cell systems to measure the bioactivity of the anti-PD-1/anti-PD-L1 mAbs...
May 8, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28735009/serotonergic-network-in-the-subesophageal-zone-modulates-the-motor-pattern-for-food-intake-in-drosophila
#6
Andreas Schoofs, Sebastian Hückesfeld, Michael J Pankratz
The functional organization of central motor circuits underlying feeding behaviors is not well understood. We have combined electrophysiological and genetic approaches to investigate the regulatory networks upstream of the motor program underlying food intake in the Drosophila larval central nervous system. We discovered that the serotonergic network of the CNS is able to set the motor rhythm frequency of pharyngeal pumping. Pharmacological experiments verified that modulation of the feeding motor pattern is based on the release of serotonin...
July 19, 2017: Journal of Insect Physiology
https://www.readbyqxmd.com/read/28734991/endoscopic-full-thickness-resection-using-suture-loop-needle-t-tag-tissue-anchors-in-the-porcine-stomach-with-video
#7
Akira Dobashi, Elizabeth Rajan, Mary A Knipschield, Christopher J Gostout
BACKGROUND AND AIMS: Endoscopic full-thickness resection (EFTR) is still challenging and a reliable technique is desirable. The aim of this study was to evaluate the feasibility of controlled EFTR using a pseudopolyp made from suture loop needle-T-tag (SLNT) tissue anchors in ex vivo porcine stomachs. METHODS: Five pig stomachs were used. Two concentric circumferential border mucosal incisions were made to facilitate isolating a target lesion for full-thickness excision and pseudopolyp formation...
July 19, 2017: Gastrointestinal Endoscopy
https://www.readbyqxmd.com/read/28734899/strategies-to-develop-endogenous-stem-cell-recruiting-bioactive-materials-for-tissue-repair-and-regeneration
#8
Settimio Pacelli, Sayantani Basu, Jonathan Whitlow, Aparna R Chakravarti, Francisca Acosta, Arushi Varshney, Saman Modaresi, Cory Berkland, Arghya Paul
A leading strategy in tissue engineering is the design of biomimetic scaffolds that stimulate the body's repair mechanisms through the recruitment of endogenous stem cells to sites of injury. Approaches that employ the use of chemoattractant gradients to guide tissue regeneration without external cell sources are favored over traditional cell-based therapies that have limited potential for clinical translation. Following this concept, bioactive scaffolds can be engineered to provide a temporally and spatially controlled release of biological cues, with the possibility to mimic the complex signaling patterns of endogenous tissue regeneration...
July 19, 2017: Advanced Drug Delivery Reviews
https://www.readbyqxmd.com/read/28734869/p2x-receptors-up-regulate-the-cell-surface-expression-of-the-neuronal-glycine-transporter-glyt2
#9
Lucía Villarejo-López, Esperanza Jiménez, David Bartolomé-Martín, Francisco Zafra, Pablo Lapunzina, Carmen Aragón, Beatriz López-Corcuera
Glycinergic inhibitory neurons of the spinal dorsal horn exert critical control over the conduction of nociceptive signals to higher brain areas. The neuronal glycine transporter 2 (GlyT2) is involved in the recycling of synaptic glycine from the inhibitory synaptic cleft and its activity modulates intra and extracellular glycine concentrations. In this report we show that the stimulation of P2X purinergic receptors with βγ-methylene adenosine 5'-triphosphate induces the up-regulation of GlyT2 transport activity by increasing total and plasma membrane expression and reducing transporter ubiquitination...
July 19, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/28734797/the-effects-pf-continuously-acoustical-stress-on-cortisol-in-milkfish-chanos-chanos
#10
Chih An Wei, Tzu Hao Lin, Ruo Dong Chen, Yung-Che Tseng, Yi Ta Shao
Strong underwater acoustic noise has been known that may cause hearing loss and actual stress in teleost. However, the long-term physiological effects of relatively quiet but continuously noise on fish were less understood. In present study, milkfish, Chanos chanos, were exposed to the simulated-wind farm noise either quiet (109 dB re 1 μPa / 125.4 Hz; approx. 10-100m distant from the wind farm) or noisy (138 dB re 1 μPa / 125.4 Hz; nearby the wind farm) conditions for 24 hr, 3 days and 1 week. Comparing to the control group (80 dB re 1 μPa / 125...
July 19, 2017: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/28734664/ph-responsive-biodegradable-nanogels-for-sustained-release-of-bleomycin
#11
Prashant Sahu, Sushil K Kashaw, Varun Kushwah, Samaresh Sau, Sanyog Jain, Arun K Iyer
Site specific drug delivery with desired therapeutic effect still remains challenging task due to suboptimal release, tissue toxicity, low selectivity and meager therapeutic efficacy in skin cancers. The aim of the current study was to fabricate pH responsive, self-assembled, chemically cross-linked biodegradable chitosan nanogel loaded with bleomycin to target the dermal area of the skin. The nanogel synthesized by ion gelation technique and was characterized for drug loading, swelling and thermal stability followed by in vitro analysis...
June 27, 2017: Bioorganic & Medicinal Chemistry
https://www.readbyqxmd.com/read/28734591/increased-inflammatory-effect-of-electronegative-ldl-and-decreased-protection-by-hdl-in-type-2-diabetic-patients
#12
Montserrat Estruch, Inka Miñambres, Jose Luis Sanchez-Quesada, Marta Soler, Antonio Pérez, Jordi Ordoñez-Llanos, Sonia Benitez
BACKGROUND AND AIMS: Type 2 diabetic patients have an increased proportion of electronegative low-density lipoprotein (LDL(-)), an inflammatory LDL subfraction present in blood, and dysfunctional high-density lipoprotein (HDL). We aimed at examining the inflammatory effect of LDL(-) on monocytes and the counteracting effect of HDL in the context of type 2 diabetes. METHODS: This was a cross-sectional study in which the population comprised 3 groups (n = 12 in each group): type 2 diabetic patients with good glycaemic control (GC-T2DM patients), type 2 diabetic patients with poor glycaemic control (PC-T2DM), and a control group...
July 13, 2017: Atherosclerosis
https://www.readbyqxmd.com/read/28734574/early-reduction-of-matrix-metalloproteinase-8-serum-levels-is-associated-with-leptin-drop-and-predicts-diabetes-remission-after-bariatric-surgery
#13
Luca Liberale, Aldo Bonaventura, Federico Carbone, Maria Bertolotto, Paola Contini, Nicola Scopinaro, Giovanni Bruno Camerini, Francesco Saverio Papadia, Renzo Cordera, Giovanni Guido Camici, Franco Dallegri, Gian Franco Adami, Fabrizio Montecucco
BACKGROUND: We aimed at investigating whether the acute abrogation of leptin after bariatric surgery is able to reduce neutrophil activation and potentially affect type 2 diabetes mellitus (T2DM) remission. METHODS: Metabolic and inflammatory parameters (i.e. leptin, IL-6 and neutrophil products) were compared at baseline (before bariatric surgery), one month, one and three years after surgery in morbid obese (MOB) T2DM patients (n=12) and non-MOB controls (n=32)...
July 13, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28734567/effect-of-calcium-phosphate-nanocomposite-on-in-vitro-remineralization-of-human-dentin-lesions
#14
Michael D Weir, Jianping Ruan, Ning Zhang, Laurence C Chow, Ke Zhang, Xiaofeng Chang, Yuxing Bai, Hockin H K Xu
OBJECTIVE: Secondary caries is a primary reason for dental restoration failures. The objective of this study was to investigate the remineralization of human dentin lesions in vitro via restorations using nanocomposites containing nanoparticles of amorphous calcium phosphate (NACP) or NACP and tetracalcium phosphate (TTCP) for the first time. METHODS: NACP was synthesized by a spray-drying technique and incorporated into a resin consisting of ethoxylated bisphenol A dimethacrylate (EBPADMA) and pyromellitic glycerol dimethacrylate (PMGDM)...
July 19, 2017: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/28734533/changes-in-pitching-mechanics-after-ulnar-collateral-ligament-reconstruction-in-major-league-baseball-pitchers
#15
Daniel A Portney, Jake M Lazaroff, Lucas T Buchler, Stephen M Gryzlo, Matthew D Saltzman
BACKGROUND: Medial ulnar collateral ligament (UCL) reconstruction is a common procedure performed on Major League Baseball pitchers. Variations in pitching mechanics before and after UCL reconstructive surgery are not well understood. METHODS: Publicly available pitch tracking data (PITCHf/x) were compared for all Major League Baseball pitchers who underwent UCL reconstruction between 2008 and 2013. Specific parameters analyzed were fastball percentage, release location, velocity, and movement of each pitch type...
August 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28734216/releasing-of-hexabromocyclododecanes-from-expanded-polystyrenes-in-seawater-field-and-laboratory-experiments
#16
Manviri Rani, Won Joon Shim, Mi Jang, Gi Myung Han, Sang Hee Hong
Expanded polystyrene (EPS) is a major component of marine debris globally. Recently, hazardous hexabromocyclododecanes (HBCDDs) were detected in EPS buoys used for aquaculture farming. Subsequently, enrichment of HBCDDs was found in nearby marine sediments and mussels growing on EPS buoys. It was suspected that EPS buoys and their debris might be sources of HBCDDs. To confirm this, the release of HBCDDs from EPS spherules detached from a buoy to seawater was investigated under field (open sea surface and closed outdoor chambers with sun exposure and in the dark) and laboratory (particle-size) conditions...
July 11, 2017: Chemosphere
https://www.readbyqxmd.com/read/28734107/extended-release-naltrexone-for-methamphetamine-dependence-among-men-who-have-sex-with-men-a-randomized-placebo-controlled-trial
#17
Phillip O Coffin, Glenn-Milo Santos, Jaclyn Hern, Eric Vittinghoff, Deirdre Santos, Tim Matheson, Grant Colfax, Steven L Batki
BACKGROUND AND AIMS: Methamphetamine use is increasingly prevalent and associated with HIV transmission. Early phase human studies suggested naltrexone reduced amphetamine use among dependent individuals. We tested if extended-release naltrexone (XRNTX) reduces methamphetamine use and associated sexual risk behaviors among high-risk methamphetamine-dependent men who have sex with men (MSM). DESIGN: Double-blind, placebo-controlled, randomized trial of XRTNX versus placebo over 12 weeks from 2012-2015...
July 22, 2017: Addiction
https://www.readbyqxmd.com/read/28733972/expression-and-function-of-the-metabotropic-purinergic-p2y-receptor-family-in-experimental-seizure-models-and-patients-with-drug-refractory-epilepsy
#18
Mariana Alves, Rosa Gomez-Villafuertes, Norman Delanty, Michael A Farrell, Donncha F O'Brien, Maria Teresa Miras-Portugal, Miguel Diaz Hernandez, David C Henshall, Tobias Engel
OBJECTIVE: ATP is released into the extracellular space during pathologic processes including increased neuronal firing. Once released, ATP acts on P2 receptors including ionotropic P2X and metabotropic P2Y receptors, resulting in changes to glial function and neuronal network excitability. Evidence suggests an involvement of P2Y receptors in the pathogenesis of epilepsy, but there has been no systematic effort to characterize the expression and function of the P2Y receptor family during seizures and in experimental and human epilepsy...
July 21, 2017: Epilepsia
https://www.readbyqxmd.com/read/28733871/a-mdr-transporter-contributes-to-the-different-extracellular-production-of-sesquiterpene-pyridine-alkaloids-between-adventitious-root-and-hairy-root-liquid-cultures-of-tripterygium-wilfordii-hook-f
#19
Guo-Peng Miao, Juan Han, Ji-Feng Zhang, Chuan-Shu Zhu, Xing Zhang
TwMDR1 transports sesquiterpene pyridine alkaloids, wilforine and wilforgine, into the hairy roots of T. wilfordii Hook.f. resulting in low secretion ratio of alkaloids. Hairy roots (HRs) exhibit high growth rate and biochemical and genetic stability. However, varying secondary metabolites in HR liquid cultures mainly remain in root tissues, and this condition may affect cell growth and cause inconvenience in downstream extraction. Studies pay less attention to adventitious root (AR) liquid cultures though release ratio of some metabolites in AR liquid cultures is significantly higher than that of HR...
July 21, 2017: Plant Molecular Biology
https://www.readbyqxmd.com/read/28733812/melatonin-increases-reactive-aggression-in-humans
#20
Jinting Liu, Ru Zhong, Wei Xiong, Haibo Liu, Christoph Eisenegger, Xiaolin Zhou
OBJECTIVE: Melatonin, a hormone released preferentially by the pineal gland during the night, affects circadian rhythms and aging processes. As animal studies have shown that melatonin increases resident-intruder aggression, this study aimed to investigate the impact of melatonin treatment on human aggression. METHODS: In a double-blind, randomized, placebo-controlled between-participant design, 63 healthy male volunteers completed the Taylor Aggression Paradigm (TAP) after oral administration of melatonin or placebo...
July 21, 2017: Psychopharmacology
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