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https://www.readbyqxmd.com/read/28106748/two-dimensional-numerical-simulations-of-ultrasound-in-liquids-with-gas-bubble-agglomerates-examples-of-bubbly-liquid-type-acoustic-metamaterials-blamms
#1
Christian Vanhille
This work deals with a theoretical analysis about the possibility of using linear and nonlinear acoustic properties to modify ultrasound by adding gas bubbles of determined sizes in a liquid. We use a two-dimensional numerical model to evaluate the effect that one and several monodisperse bubble populations confined in restricted areas of a liquid have on ultrasound by calculating their nonlinear interaction. The filtering of an input ultrasonic pulse performed by a net of bubbly-liquid cells is analyzed. The generation of a low-frequency component from a single cell impinged by a two-frequency harmonic wave is also studied...
January 17, 2017: Sensors
https://www.readbyqxmd.com/read/28106407/matter-wave-optical-wave-mixing-induced-transparency-and-a-nonhyperbolic-matter-wave-quasisoliton-in-quantum-gases
#2
Yan Li, Chengjie Zhu, W R Garrett, E W Hagley, L Deng
The realization of atomic quantum gases has brought out surprising effects that have no correspondence in nonlinear optics with thermal gases, presenting intriguing and exciting challenges to the research discipline of nonlinear optics which has matured since the invention of the laser. Here, we show an unexpected optical wave-mixing gain cancellation effect in a quantum gas that restricts an, otherwise, strongly enhanced backward-propagating light-matter wave-mixing process. This results in a wave-mixing induced transparency and a nonhyperbolic quasi-matter-wave soliton that opens new research opportunities in hydrodynamic fluid research of degenerate quantum gases, such as phonon scattering in a two-dimensional sonic black hole horizon...
January 6, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28102899/b-type-natriuretic-peptide-guided-treatment-for-heart-failure
#3
REVIEW
Julie McLellan, Carl J Heneghan, Rafael Perera, Alison M Clements, Paul P Glasziou, Karen E Kearley, Nicola Pidduck, Nia W Roberts, Sally Tyndel, F Lucy Wright, Clare Bankhead
BACKGROUND: Heart failure is a condition in which the heart does not pump enough blood to meet all the needs of the body. Symptoms of heart failure include breathlessness, fatigue and fluid retention. Outcomes for patients with heart failure are highly variable; however on average, these patients have a poor prognosis. Prognosis can be improved with early diagnosis and appropriate use of medical treatment, use of devices and transplantation. Patients with heart failure are high users of healthcare resources, not only due to drug and device treatments, but due to high costs of hospitalisation care...
December 22, 2016: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28100888/%C3%AE-hydroxybutyrate-levels-in-serum-and-cerebrospinal-fluid-under-ketone-body-metabolism-in-rats
#4
Xiaomeng Wang, Qi Liu, Jian Zhou, Xiuhua Wu, Qingan Zhu
A high-fat, low-carbohydrate diet (KD) or calorie restriction in the form of every-other-day fasting (EODF) results in ketone body metabolism with an increasing β-hydroxybutyrate (βOHB) level. Previous studies have supported that a KD and EODF have a neuroprotective effect. However, the βOHB levels in the cerebrospinal fluid (CSF) resulting from a KD and EODF remain unknown. The aim of this study was to detect βOHB levels in rats fed a KD, EODF diet, and every-other-day ketogenic diet (EODKD) and to compare the serum βOHB level with the CSF βOHB level...
January 19, 2017: Experimental Animals
https://www.readbyqxmd.com/read/28099578/il-6-and-il-10-gene-polymorphisms-in-patients-with-aggressive-periodontitis-effects-on-gcf-serum-and-clinic-parameters
#5
Emine Pirim Gorgun, Hulya Toker, Ertan Mahir Korkmaz, Omer Poyraz
Genetic variations observed in cytokines affect periodontitis susceptibility. The aim of this study was to investigate interleukin(IL)-6(-174) and IL-10(-597) gene polymorphisms in generalized aggressive periodontitis (GAgP) patients. Also, we aimed to evaluate the effects of IL-6 and IL-10 gene polymorphisms on the clinical outcomes of non-surgical periodontal therapy and cytokine levels in gingival crevicular fluid(GCF) and serum. Fifty-three patients with GAgP and 50 periodontally healthy individuals were included in this study...
January 16, 2017: Brazilian Oral Research
https://www.readbyqxmd.com/read/28098908/protective-effects-of-ethyl-pyruvate-on-lipopolysaccharide%C3%A2-induced-acute-lung-injury-through-inhibition-of-autophagy-in-neutrophils
#6
Qingteng Zhu, Hui Wang, Hairong Wang, Yong Luo, Yang Yu, Qirong Du, Aihua Fei, Shuming Pan
Among a number of clinical factors, bacterial infection is one of the most common causes of acute lung injury (ALI), a serious complication that carries a high risk of mortality (~40%). During the process of ALI, intense local and systemic inflammation is elicited, which exacerbates the injury. Neutrophil infiltration into airspace is observed in early stage of ALI, and is required for the full development of ALI through an array of mechanisms, including the release of granule contents and the production of pro‑inflammatory cytokines, due to the overactivation of complement and cytokines...
January 13, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28098771/breast-cancer-brain-metastases-clonal-evolution-in-clinical-context
#7
REVIEW
Jodi M Saunus, Amy E McCart Reed, Zhun Leong Lim, Sunil R Lakhani
Brain metastases are highly-evolved manifestations of breast cancer arising in a unique microenvironment, giving them exceptional adaptability in the face of new extrinsic pressures. The incidence is rising in line with population ageing, and use of newer therapies that stabilise metastatic disease burden with variable efficacy throughout the body. Historically, there has been a widely-held view that brain metastases do not respond to circulating therapeutics because the blood-brain-barrier (BBB) restricts their uptake...
January 13, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28096174/anti-folate-receptor-%C3%AE-ige-but-not-igg-recruits-macrophages-to-attack-tumors-via-tnf-%C3%AE-mcp-1-signaling
#8
Debra H Josephs, Heather J Bax, Tihomir Dodev, Mirella Georgouli, Mano Nakamura, Giulia Pellizzari, Louise Saul, Panagiotis Karagiannis, Anthony Cheung, Cecilia Herraiz, Kristina M Ilieva, Isabel Correa, Matthew Fittall, Silvia Crescioli, Patrycja Gazinska, Natalie Woodman, Silvia Mele, Giulia Chiaruttini, Amy E Gilbert, Alexander Koers, Marguerite Bracher, Christopher Selkirk, Heike Lentfer, Claire Barton, Elliott Lever, Gareth Muirhead, Sophia Tsoka, Silvana Canevari, Mariangela Figini, Ana Montes, Noel Downes, David Dombrowicz, Christopher Corrigan, Andrew J Beavil, Frank O Nestle, Paul S Jones, Hannah J Gould, Victoria Sanz-Moreno, Philip J Blower, James Spicer, Sophia N Karagiannis
IgE antibodies are key mediators of anti-parasitic immune responses, but their potential for cancer treatment via antibody-directed cell-mediated cytotoxicity (ADCC) has been little studied. Recently, tumor antigen-specific IgEs were reported to restrict cancer cell growth by engaging high-affinity Fc receptors on monocytes and macrophages, however, the underlying therapeutic mechanisms were undefined and in vivo proof-of-concept was limited. Here, an immunocompetent rat model was designed to recapitulate the human IgE-Fcε receptor system for cancer studies...
January 17, 2017: Cancer Research
https://www.readbyqxmd.com/read/28090763/sodium-and-fluid-management-in-the-conservative-management-of-chronic-kidney-disease
#9
Morgan Marcuccilli, Jessica Kendrick, Michel Chonchol
Chronic kidney disease (CKD) imposes a significant global health burden. In the United States, one in three adults are at risk for CKD currently affecting over 28 million Americans. While several studies have demonstrated the benefit of treating traditional risk factors in CKD, including hypertension with pharmacologic agents such as blockade of the renin-angiotensin system (RAAS), there is scarce data on the advantages of sodium and fluid management in this population. Both experimental and observational studies have shown improvement in hypertension and cardiovascular outcomes with sodium restriction to < 2...
January 13, 2017: Panminerva Medica
https://www.readbyqxmd.com/read/28087701/the-ubiquitin-ligase-nedd4l-regulates-the-na-k-2cl-co-transporter-nkcc1-slc12a2-in-the-colon
#10
Chong Jiang, Hiroshi Kawabe, Daniela Rotin
The ubiquitin ligase Nedd4-like (Nedd4L, or Nedd4-2) binds to and regulates stability of the epithelial Na+ channel (ENaC) in salt absorbing epithelia in the kidney, lung, and other tissues. Its role in the distal colon, which also absorbs salt and fluid and expresses ENaC, is unknown. Using conditional knockout approach to knockout Nedd4L in mice intestinal epithelium (Nedd4Lf/f;Vil-CreERT2) we show here that Nedd4L depletion leads to a higher steady-state short circuit current (Isc) in mouse distal colon tissue relative to controls...
January 13, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28086988/computed-tomographic-findings-and-treatment-of-a-bull-with-pituitary-gland-abscess
#11
Ueli Braun, Alexandra Malbon, Manon Kochan, Barbara Riond, Fredi Janett, Cornelia Iten, Matthias Dennler
BACKGROUND: In cattle, the prognosis of brain abscess is unfavourable and treatment is therefore not recommended. To the knowledge of the authors, there has been no report of successful treatment of a brain abscess in cattle.This report describes the clinical, computed tomographic and postmortem findings in a Holstein-Friesian bull with a hypophyseal abscess. CASE REPORT: The main clinical findings were generalised ataxia, ptyalism, prolapse of the tongue, dropped jaw, dysphagia, head tilt and unilateral ptosis...
January 13, 2017: Acta Veterinaria Scandinavica
https://www.readbyqxmd.com/read/28086855/postoperative-fluid-overload-is-a-risk-factor-for-adverse-surgical-outcome-in-patients-undergoing-esophagectomy-for-esophageal-cancer-a-retrospective-study-in-335-patients
#12
Torben Glatz, Birte Kulemann, Goran Marjanovic, Svenja Bregenzer, Frank Makowiec, Jens Hoeppner
BACKGROUND: Restrictive intraoperative fluid management is increasingly recommended for patients undergoing esophagectomy. Controversy still exists about the impact of postoperative fluid management on perioperative outcome. METHODS: We retrospectively examined 335 patients who had undergone esophagectomy for esophageal cancer at the University Hospital Freiburg between 1996 and 2014 to investigate the relation between intra- and postoperative fluid management and postoperative morbidity after esophagectomy...
January 13, 2017: BMC Surgery
https://www.readbyqxmd.com/read/28079776/enhanced-recovery-program-and-length-of-stay-after-laparotomy-on-a-gynecologic-oncology-service-a-randomized-controlled-trial
#13
Elizabeth L Dickson, Erica Stockwell, Melissa A Geller, Rachel Isaksson Vogel, Sally A Mullany, Rahel Ghebre, Boris J N Witherhoff, Levi S Downs, Linda F Carson, Deanna Teoh, Michelle Glasgow, Matt Gerber, Colleen Rivard, Britt K Erickson, Jacob Hutchins, Peter A Argenta
OBJECTIVE: To estimate whether a rapid recovery program would reduce length of stay among patients undergoing laparotomy on a gynecologic oncology service. METHODS: We conducted a prospective, randomized, controlled trial comparing an enhanced recovery after surgery protocol with routine postoperative care among women undergoing laparotomy on the gynecologic oncology service. Protocol elements included: preoperative counseling, regional anesthesia, intraoperative fluid restriction, and early postoperative ambulation and feeding...
January 9, 2017: Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28074767/-diet-consisting-mainly-of-sunflower-seeds-and-chicken-as-the-cause-of-small-bowel-obstruction-in-a-bodybuilder
#14
Tine Thorup, Rasmus Fabricius
Diet-induced small bowel obstruction is a rare condition in young, healthy patients. We describe a case of a 26-year-old man, who presented with acute small bowel obstruction. During a period of eight days prior to admission the patient had been eating an extremely restricted diet along with a regulated intake of fluids. The diet was part of a preparation for a major fitness contest. We chose a conservative treatment of IV fluids and laxatives, and the patient recovered uneventfully.
January 9, 2017: Ugeskrift for Laeger
https://www.readbyqxmd.com/read/28070536/establishment-a-cho-cell-line-expressing-human-cd52-molecule
#15
Tati Kadijeh, Yazdanpanah-Samani Mahsa, Ramezani Amin, Mahmoudi Maymand Elham, Ghaderi Abbas
BACKGROUND: CD52 is a small glycoprotein with a GPI anchor at its C-terminus. CD52 is expressed by Normal and malignant T and B lymphocytes and monocytes. There are detectable amounts of soluble CD52 in plasma of patients with CLL and could be used as a tumor marker. Although the biological function of CD52 is unknown but it seems that CD52 may be involved in migration and activation of T-cells .The aim of this study was to clone and express human CD52 gene in CHO cell line and studying its function in more details...
October 2016: Reports of Biochemistry & Molecular Biology
https://www.readbyqxmd.com/read/28062958/a-study-of-oxidative-stress-in-neonates-delivered-through-meconium-stained-amniotic-fluid
#16
Tapas Bandyopadhyay, B D Bhatia, H D Khanna
: To estimate the levels of malondialdehyde (MDA) and 8-hydroxy-2-deoxyguanosine (8-OH-dG) in cord blood plasma of newborns born through meconium-stained amniotic fluid (MSAF) and also to find out the correlation between their levels with birth weight and gestation, we measured the cord blood plasma levels of MDA and 8-OH-dG in 59 newborns born through MSAF and 50 newborns born through clear liquor. The levels of cord blood plasma MDA and 8-OH-dG were significantly higher in full-term and late-preterm newborns born through MSAF...
January 6, 2017: European Journal of Pediatrics
https://www.readbyqxmd.com/read/28054371/review-tau-in-biofluids-relation-to-pathology-imaging-and-clinical-features
#17
Henrik Zetterberg
Tau is a microtubule-binding protein that is important for the stability of neuronal axons. It is normally expressed within neurons and is also secreted into the brain interstitial fluid that communicates freely with cerebrospinal fluid (CSF) and, in a more restricted manner, blood via the glymphatic clearance system of the brain. In Alzheimer's disease (AD), neuroaxonal degeneration results in increased release of tau from neurons. Further, tau is truncated and phosphorylated, which leads to aggregation of tau in neurofibrillary tangles of the proximal axoplasm...
January 5, 2017: Neuropathology and Applied Neurobiology
https://www.readbyqxmd.com/read/28054290/treatment-of-hyponatremia-in-patients-with-acute-neurological-injury
#18
Theresa Human, Aaron M Cook, Brian Anger, Kathleen Bledsoe, Amber Castle, David Deen, Haley Gibbs, Christine Lesch, Norah Liang, Karen McAllen, Christopher Morrison, Dennis Parker, A Shaun Rowe, Denise Rhoney, Kiranpal Sangha, Elena Santayana, Scott Taylor, Eljim Tesoro, Gretchen Brophy
BACKGROUND: Little data exist regarding the practice of sodium management in acute neurologically injured patients. This study describes the practice variations, thresholds for treatment, and effectiveness of treatment in this population. METHODS: This retrospective, multicenter, observational study identified 400 ICU patients, from 17 centers, admitted for ≥48 h with subarachnoid hemorrhage (SAH), traumatic brain injury (TBI), intraparenchymal hemorrhage, or intracranial tumors between January 1, 2011 and July 31, 2012...
January 4, 2017: Neurocritical Care
https://www.readbyqxmd.com/read/28054107/-evidence-based-supportive-measures-to-secure-pancreatic-anastomoses
#19
O Belyaev, W Uhl
BACKGROUND: Pancreatic anastomosis is the Achilles heel of pancreatic surgery. Despite substantial progress in surgical techniques the rate of postoperative pancreatic fistulas remains very high. For this reason various supportive measures to secure pancreatic anastomoses are of continuing interest. OBJECTIVE: This review presents the newest evidence-based data on supportive measures designed to secure a pancreatic anastomosis. MATERIAL AND METHODS: The most recent meta-analyses, randomized controlled trials and the largest retrospective studies on the role of pancreatic duct stenting, double loop reconstruction, autologous patches and drainage in pancreaticoduodenectomy were taken into account...
January 2017: Der Chirurg; Zeitschrift Für Alle Gebiete der Operativen Medizen
https://www.readbyqxmd.com/read/28051332/activation-of-the-central-melanocortin-system-chronically-reduces-body-mass-without-the-necessity-of-long-term-caloric-restriction
#20
I Côté, Y Sakarya, N Kirichenko, D Morgan, C S Carter, N Tümer, P J Scarpace
Melanotan II (MTII) is a potent appetite suppressor that rapidly reduces body mass. Given the rapid loss of anorexic response upon chronic MTII treatment, most investigations have focused on the initial physiological adaptations. However, other evidence supports MTII as a long-term modulator of energy balance that remains to be established. Therefore, we examined the chronic effects of MTII on energy homeostasis. MTII (high or low dose) or artificial cerebrospinal fluid (aCSF) was infused into the lateral ventricle of the brain of 6-month-old F344BN rats (6-7/group) over 40 days...
October 19, 2016: Canadian Journal of Physiology and Pharmacology
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