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https://www.readbyqxmd.com/read/28938688/drag-reducing-polymers-decrease-hepatic-injury-and-metastases-after-liver-ischemia-reperfusion
#1
Samer Tohme, Marina V Kameneva, Hamza O Yazdani, Vikas Sud, Julie Goswami, Patricia Loughran, Hai Huang, Richard L Simmons, Allan Tsung
INTRODUCTION: Surgery, a crucial therapeutic modality in the treatment of solid tumors, can induce sterile inflammatory processes which can result in metastatic progression. Liver ischemia and reperfusion (I/R) injury, an inevitable consequence of hepatic resection of metastases, has been shown to foster hepatic capture of circulating cancer cells and accelerate metastatic growth. Efforts to reduce these negative consequences have not been thoroughly investigated. Drag reducing polymers (DRPs) are blood-soluble macromolecules that can, in nanomolar concentrations, increase tissue perfusion, decrease vascular resistance and decrease near-wall microvascular concentration of neutrophils and platelets thereby possibly reducing the inflammatory microenvironment...
August 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28935937/membrane-tension-increases-fusion-efficiency-of-model-membranes-in-the-presence-of-snares
#2
Torben-Tobias Kliesch, Jörn Dietz, Laura Turco, Partho Halder, Elena Polo, Marco Tarantola, Reinhard Jahn, Andreas Janshoff
The large gap in time scales between membrane fusion occurring in biological systems during neurotransmitter release and fusion observed between model membranes has provoked speculations over a large number of possible factors that might explain this discrepancy. One possible reason is an elevated lateral membrane tension present in the presynaptic membrane. We investigated the tension-dependency of fusion using model membranes equipped with a minimal fusion machinery consisting of syntaxin 1, synaptobrevin and SNAP 25...
September 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28935613/maternal-exposure-of-balb-c-mice-to-indoor-no2-and-allergic-asthma-syndrome-in-offspring-at-adulthood-with-evaluation-of-dna-methylation-associated-th2-polarization
#3
Huifeng Yue, Wei Yan, Xiaotong Ji, Rui Gao, Juan Ma, Ziyu Rao, Guangke Li, Nan Sang
BACKGROUND: Fetal stress has been proposed to be associated with diseases in both children and adults. Epidemiological studies suggest that maternal exposure to nitrogen dioxide (NO2) contributes to increased morbidity and mortality of offspring with allergic asthma later in life. OBJECTIVES: We aimed to test whether maternal NO2 exposure causes allergic asthma-related consequences in offspring absent any subsequent lung provocation and whether this exposure enhances the likelihood of developing allergic asthma or the intensity of developed allergic airway disease following postnatal allergic sensitization and challenge...
September 13, 2017: Environmental Health Perspectives
https://www.readbyqxmd.com/read/28935440/effects-of-acute-restraint-and-unpredictable-chronic-mild-stress-on-brain-corticotrophin-releasing-factor-mrna-in-the-elevated-t-maze
#4
José S de Andrade, Isabel C Céspedes, Renata O Abrão, Joelcimar M da Silva, Ricardo Ceneviva, Daniel Araki Ribeiro, Jackson C Bittencourt, Milena B Viana
Corticotrophin releasing factor (CRF) modulates stress/anxiety-related responses. Previous studies showed that exposure to acute restraint and unpredictable chronic mild stress (UCMS) facilitates elevated T-maze (ETM) avoidance responses, an anxiogenic-like effect. This study verified the role of CRF in the modulation of ETM avoidance and escape reactions, in unstressed rats and in animals exposed to acute restraint or to UCMS, by quantifying CRF mRNA concentrations in stress/anxiety-related brain regions, through semiquantitative in situ hybridization...
September 18, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28932686/a-positive-rapid-strep-test-in-a-young-adult-with-acute-pharyngitis-be-careful-what-you-wish-for
#5
Burke A Cunha
In young adults with acute pharyngitis, the main differential diagnosis is between GAS pharyngitis, EBV infectious mononucleosis, or other causes of viral pharyngitis. A positive RST does not differentiate GAS colonization from infection as is well illustrated by this case. Laboratory test results must be interpreted in the appropriate clinical context to be diagnostically meaningful. The RST only detects group A streptococci, but does not, of itself, implicate a causative role in the patient's pharyngitis...
2017: IDCases
https://www.readbyqxmd.com/read/28928974/the-influence-of-water-temperature-on-sockeye-salmon-heart-rate-recovery-following-simulated-fisheries-interactions
#6
Tanya S Prystay, Erika J Eliason, Michael J Lawrence, Melissa Dick, Jacob W Brownscombe, David A Patterson, Glenn T Crossin, Scott G Hinch, Steven J Cooke
Selective harvest policies have been implemented in North America to enhance the conservation of Pacific salmon (Oncorhynchus spp.) stocks, which has led to an increase in the capture and release of fish by all fishing sectors. Despite the immediate survival benefits, catch-and-release results in capture stress, particularly at high water temperatures, and this can result in delayed post-release mortality minutes to days later. The objective of this study was to evaluate how different water temperatures influenced heart rate disturbance and recovery of wild sockeye salmon (Oncorhynchus nerka) following fisheries interactions (i...
2017: Conservation Physiology
https://www.readbyqxmd.com/read/28928706/early-stroke-rehabilitation-of-the-upper-limb-assisted-with-an-electromyography-driven-neuromuscular-electrical-stimulation-robotic-arm
#7
Qiuyang Qian, Xiaoling Hu, Qian Lai, Stephanie C Ng, Yongping Zheng, Waisang Poon
BACKGROUND: Effective poststroke motor rehabilitation depends on repeated limb practice with voluntary efforts. An electromyography (EMG)-driven neuromuscular electrical stimulation (NMES)-robot arm was designed for the multi-joint physical training on the elbow, the wrist, and the fingers. OBJECTIVES: To investigate the training effects of the device-assisted approach on subacute stroke patients and to compare the effects with those achieved by the traditional physical treatments...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28927705/evaluation-of-aluminium-mobilization-from-its-soil-mineral-pools-by-simultaneous-effect-of-aspergillus-strains-acidic-and-chelating-exometabolites
#8
Filip Polák, Martin Urík, Marek Bujdoš, Peter Uhlík, Peter Matúš
This contribution investigates aluminium mobilization from main aluminium pools in soils, phyllosilicates and oxyhydroxides, by acidic and chelating exometabolites of common soil fungi Aspergillus niger and A. clavatus. Their exometabolites' acidity as well as their ability to extract aluminium from solid mineral phases differed significantly during incubation. While both strains are able to mobilize aluminium from boehmite and aluminium oxide mixture to some extent, A. clavatus struggles to mobilize any aluminium from gibbsite...
September 13, 2017: Journal of Inorganic Biochemistry
https://www.readbyqxmd.com/read/28923705/effect-of-gnrh-on-ovulatory-response-after-luteolysis-induced-by-two-low-doses-of-pgf2%C3%AE-in-lactating-dairy-cows
#9
Tsung-Ching Liu, Chen-Fei Chiang, Chia-Tang Ho, Jacky Peng-Wen Chan
This study investigated the effect of gonadotropin-releasing hormone (GnRH) on ovulatory response after complete luteolysis induced by two low doses of prostaglandin (PG)F2α in lactating dairy cows. Cows (n = 18) ranging between 45 and 65 days in milk were recruited for synchronization by a modified Ovsynch-48 protocol (GnRH-7 days-375 μg PGF2α-1 day-250 μg of PGF2α-1 day-GnRH) over a total of 23 estrous cycles. Synchronized cows (n = 16) were randomly assigned to GnRH and Saline groups in stage 1 of the experiment after 9-10 days of ovulation in synchronization...
September 9, 2017: Theriogenology
https://www.readbyqxmd.com/read/28923363/anti-inflammatory-effects-of-flavonoids-in-neurodegenerative-disorders
#10
Carmela Spagnuolo, Stefania Moccia, Gian Luigi Russo
Neuroinflammation is one of the main mechanisms involved in the progression of several neurodegenerative diseases, such as Parkinson, Alzheimer, multiple sclerosis, amyotrophic lateral sclerosis and others. The activation of microglia is the main feature of neuroinflammation, promoting the release of pro-inflammatory cytokines and resulting in the progressive neuronal cell death. Natural compounds, such as flavonoids, possess neuroprotective potential probably related to their ability to modulate the inflammatory responses involved in neurodegenerative diseases...
September 7, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28921744/cholinergic-basal-forebrain-structures-are-not-essential-for-mediation-of-the-arousing-action-of-glutamate
#11
Zoltán Lelkes, Shamsiiat Abdurakhmanova, Tarja Porkka-Heiskanen
The cholinergic basal forebrain contributes to cortical activation and receives rich innervations from the ascending activating system. It is involved in the mediation of the arousing actions of noradrenaline and histamine. Glutamatergic stimulation in the basal forebrain results in cortical acetylcholine release and suppression of sleep. However, it is not known to what extent the cholinergic versus non-cholinergic basal forebrain projection neurones contribute to the arousing action of glutamate. To clarify this question, we administered N-methyl-D-aspartate (NMDA), a glutamate agonist, into the basal forebrain in intact rats and after destruction of the cholinergic cells in the basal forebrain with 192 immunoglobulin (Ig)G-saporin...
September 18, 2017: Journal of Sleep Research
https://www.readbyqxmd.com/read/28920154/pharmacokinetics-of-doripenem-in-plasma-and-epithelial-lining-fluid-elf-comparison-of-two-dosage-regimens
#12
Zoe Oesterreicher, Iris Minichmayr, Robert Sauermann, Daniela Marhofer, Edith Lackner, Walter Jäger, Alexandra Maier-Salamon, Richard Schwameis, Charlotte Kloft, Markus Zeitlinger
PURPOSE: In 2014, FDA released a warning for prescription of doripenem for ventilator-associated bacterial pneumonia due to unsatisfactory clinical cure rates. The present study explores if the observed lack of efficacy might be explained by insufficient target site pharmacokinetics in intensive care patients after two different infusion schemes. METHODS: Plasma and bronchoalveolar lavage sampling was performed in 16 intubated patients with pneumonia receiving doripenem either as 1-h or as 4-h infusion...
September 17, 2017: European Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/28919234/effects-of-periplasmic-chaperones-and-membrane-thickness-on-bama-catalysed-outer-membrane-protein-folding
#13
Bob Schiffrin, Antonio N Calabrese, Anna J Higgins, Julia R Humes, Alison E Ashcroft, Antreas C Kalli, David J Brockwell, Sheena E Radford
The biogenesis of outer membrane proteins (OMPs) in Gram-negative bacteria involves delivery by periplasmic chaperones to the β-barrel assembly machinery (BAM) which catalyses OMP insertion into the outer membrane (OM). Here, we examine the effects of membrane thickness, the E. coli periplasmic chaperones Skp and SurA, and BamA, the central subunit of the BAM complex, on the folding kinetics of a model OMP (tOmpA) using fluorescence spectroscopy, native mass spectrometry, and molecular dynamics (MD) simulations...
September 15, 2017: Journal of Molecular Biology
https://www.readbyqxmd.com/read/28919028/resumption-of-ovarian-function-the-metabolic-profile-and-body-condition-in-brahman-cows-bos-indicus-is-not-affected-by-the-combination-of-calf-separation-and-progestogen-treatment
#14
Ramiro Díaz, Carlos S Galina, Ivette Rubio, Manuel Corro, José Luis Pablos, Ana Rodríguez, Agustín Orihuela
To evaluate the effect of different calf separation procedures after a progestogen treatment on the resumption of ovarian function, body condition and metabolic profile, 59 multiparous Brahman cows grazing on a mixed grass pasture were studied. No supplementation was given at any time. Body condition score (BCS), fat thickness (FAT) and blood metabolites were measured fortnightly from the beginning of the last trimester of gestation until 96days postpartum. At 30days postpartum all animals received a progesterone (P4)-releasing device (CIDR) which was withdrawn 9days later when prostaglandin F2α was applied...
September 1, 2017: Animal Reproduction Science
https://www.readbyqxmd.com/read/28917126/effects-of-a-single-administration-of-different-gonadotropins-on-day-7%C3%A2-post-insemination-on-pregnancy-outcomes-of-rabbit-does
#15
N M Hashem, Z R Aboul-Ezz
This study aimed to investigate the effects of a single administration of one of three different gonadotropins on Day 7 post-insemination on ovarian activity, progesterone (P4) concentration and pregnancy outcomes of rabbit does. Multiparous, non-lactating, V-line does were artificially inseminated after synchronization and ovulation induction with equine chorionic gonadotropin (eCG; 25 IU im) and gonadotropin releasing hormone (GnRH; 0.8  μg buserelin im) 48 h later. On Day 7 post-inseminarion, does were randomly allocated into four groups (n = 40/group)...
September 7, 2017: Theriogenology
https://www.readbyqxmd.com/read/28916300/distinct-neuronal-populations-in-the-basolateral-and-central-amygdala-are-activated-with-acute-pain-conditioned-fear-and-fear-conditioned-analgesia
#16
Ryan K Butler, Sarah Ehling, Megan Barbar, Jess Thomas, Mary A Hughes, Charles E Smith, Vladimir M Pogorelov, Dipendra K Aryal, William C Wetsel, B Duncan X Lascelles
Fear-conditioned analgesia (FCA) is modulated by brain areas involved in the descending inhibitory pain pathway such as the basolateral (BLA) and central amygdala (CEA). The BLA contains Ca(2+)/calmodulin-dependent protein kinase II (CaMKII) and parvalbumin (PV) neurons. CEA neurons are primarily inhibitory (GABAergic) that comprise enkephalin (ENK) interneurons and corticotropin-releasing factor (CRF) - neurons that project to the periaqueductal grey. The purpose of our experiment was to determine the pattern of activation of CaMKII/PV and ENK/CRF neurons following the expression of acute pain, conditioned fear, and FCA...
September 12, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28916225/stereotactic-radiosurgery-of-early-melanoma-brain-metastases-after-initiation-of-anti-ctl-4-treatment-is-associated-with-improved-intracranial-control
#17
Yi An, Wen Jiang, Betty Y S Kim, Jack M Qian, Chad Tang, Penny Fang, Jennifer Logan, Neil M D'Souza, Lauren E Haydu, Xin A Wang, Kenneth R Hess, Harriet Kluger, Isabella C Glitza, Anita Mahajan, James W Welsh, Steven H Lin, James B Yu, Michael A Davies, Patrick Hwu, Erik P Sulman, Paul D Brown, Veronica L S Chiang, Jing Li
BACKGROUND: Numerous studies suggest that radiation can boost antitumor immune response by stimulating release of tumor-specific antigens. However, the optimal timing between radiotherapy and immune checkpoint blockade to achieve potentially synergistic benefits is unclear. MATERIAL AND METHODS: Multi-institutional retrospective analysis was conducted of ninety-nine metastatic melanoma patients from 2007 to 2014 treated with ipilimumab who later received stereotactic radiosurgery (SRS) for new brain metastases that developed after starting immunotherapy...
September 12, 2017: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/28914334/the-clinical-and-radiological-results-of-individualized-surgical-treatment-depending-on-pathologic-abnormalities-in-recurrent-patellar-dislocation-low-recurrence-rate-but-unintended-patella-baja
#18
Do Kyung Lee, Joon Ho Wang, Seung Hoon Kang, Jun Ho Kim, Russel Haque, Byung Hoon Lee
PURPOSE: To evaluate the clinical and radiological outcomes and chondral lesion change using individualized surgery for recurrent patellar dislocation. METHODS: A total of 31 knees with recurrent patellar dislocation underwent surgery depending on individual pathologic abnormalities. Pathologic abnormalities including medial laxity, lateral tightness, increased tibial tuberosity (TT)-to-trochlear groove distance (>20 mm), and patella alta (Caton-Deschamps ratio >1...
September 15, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28913625/calcium-release-dependent-inactivation-precedes-formation-of-the-tubular-system-in-developing-rat-cardiac-myocytes
#19
Katarina Macková, Alexandra Zahradníková, Matej Hoťka, Barbora Hoffmannová, Ivan Zahradník, Alexandra Zahradníková
Developing cardiac myocytes undergo substantial structural and functional changes transforming the mechanism of excitation-contraction coupling from the embryonic form, based on calcium influx through sarcolemmal DHPR calcium channels, to the adult form, relying on local calcium release through RYR calcium channels of sarcoplasmic reticulum stimulated by calcium influx. We characterized day-by-day the postnatal development of the structure of sarcolemma, using techniques of confocal fluorescence microscopy, and the development of the calcium current, measured by the whole-cell patch-clamp in isolated rat ventricular myocytes...
September 14, 2017: European Biophysics Journal: EBJ
https://www.readbyqxmd.com/read/28912682/extracellular-vesicles-in-brain-tumors-and-neurodegenerative-diseases
#20
REVIEW
Federica Ciregia, Andrea Urbani, Giuseppe Palmisano
Extracellular vesicles (EVs) can be classified into apoptotic bodies, microvesicles (MVs), and exosomes, based on their origin or size. Exosomes are the smallest and best characterized vesicles which derived from the endosomal system. These vesicles are released from many different cell types including neuronal cells and their functions in the nervous system are investigated. They have been proposed as novel means for intercellular communication, which takes part not only to the normal neuronal physiology but also to the transmission of pathogenic proteins...
2017: Frontiers in Molecular Neuroscience
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