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https://www.readbyqxmd.com/read/28526374/impact-of-high-dose-vitamin-d3-on-plasma-free-25-hydroxyvitamin-d-concentrations-and-antimicrobial-peptides-in-critically-ill-mechanically-ventilated-adults
#1
Jenny E Han, Jessica A Alvarez, Jennifer L Jones, Vin Tangpricha, Mona A Brown, Li Hao, Lou Ann S Brown, Greg S Martin, Thomas R Ziegler
OBJECTIVES: High-dose vitamin D3 increases plasma total 25-hydroxyvitamin D [25(OH)D] in critically ill, ventilated patients; however, to our knowledge, the effect on plasma levels of free (nonprotein-bound) 25(OH)D has not been investigated in critical illness. Moreover, the relationship of free 25(OH)D and the regulation of endogenous antimicrobial peptides (AMPs) remains unknown. The aims of this study were to determine in critically ill adults with respiratory failure the effect of previous high-dose regimens of vitamin D3 on free 25(OH)D concentrations, the relationship of free 25(OH)D with circulating cathelicidin (LL-37) and human beta-defensin-2 (hBD-2), and the associations between plasma levels of free 25(OH)D and these AMPs to alveolar macrophage phagocytosis function...
June 2017: Nutrition
https://www.readbyqxmd.com/read/28525778/inferior-vena-cava-collapsibility-detects-fluid-responsiveness-among-spontaneously-breathing-critically-ill-patients
#2
Keith A Corl, Naomi R George, Justin Romanoff, Andrew T Levinson, Darin B Chheng, Roland C Merchant, Mitchell M Levy, Anthony M Napoli
PURPOSE: Measurement of inferior vena cava collapsibility (cIVC) by point-of-care ultrasound (POCUS) has been proposed as a viable, non-invasive means of assessing fluid responsiveness. We aimed to determine the ability of cIVC to identify patients who will respond to additional intravenous fluid (IVF) administration among spontaneously breathing critically-ill patients. METHODS: Prospective observational trial of spontaneously breathing critically-ill patients...
May 12, 2017: Journal of Critical Care
https://www.readbyqxmd.com/read/28524040/-a-case-of-the-severe-human-infection-by-avian-influenza-h7n9-was-rescued-successfully-by-the-sepsis-bundle
#3
Shaohong Wang, Jintao Liu, Haili Luo, Xianguo Pan, Tongmei Yuan, Xuemei Long
One confirmed diagnosis case of severe human infection by avian influenza H7N9 admitted to intensive care unit (ICU) of the Second Affiliated Hospital of Guizhou Medical University on January 12th, 2017 was reported. The patient was treated with the sepsis bundle, and recovered finally, including a series of comprehensive treatments, such as respiratory support, circulation support, antiviral, anti-inflammation, immunization enhancement, critical nursing, fluid management, nutritional support and treatment of complications...
May 2017: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
https://www.readbyqxmd.com/read/28522901/transition-of-early-phase-treatment-for-acute-pancreatitis-an-analysis-of-nationwide-epidemiological-survey
#4
EDITORIAL
Shin Hamada, Atsushi Masamune, Tooru Shimosegawa
Treatment of acute pancreatitis (AP) is one of the critical challenges to the field of gastroenterology because of its high mortality rate and high medical costs associated with the treatment of severe cases. Early-phase treatments for AP have been optimized in Japan, and clinical guidelines have been provided. However, changes in early-phase treatments and the relationship between treatment strategy and clinical outcome remain unclear. Retrospective analysis of nationwide epidemiological data shows that time for AP diagnosis has shortened, and the amount of initial fluid resuscitation has increased over time, indicating the compliance with guidelines...
April 28, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28522687/integrin-linked-kinase-signaling-promotes-cyst-growth-and-fibrosis-in-polycystic-kidney-disease
#5
Archana Raman, Gail A Reif, Yuqiao Dai, Aditi Khanna, Xiaogang Li, Lindsay Astleford, Stephen C Parnell, James P Calvet, Darren P Wallace
Autosomal dominant polycystic kidney disease (ADPKD) is characterized by innumerous fluid-filled cysts and progressive deterioration of renal function. Previously, we showed that periostin, a matricellular protein involved in tissue repair, is markedly overexpressed by cyst epithelial cells. Periostin promotes cell proliferation, cyst growth, interstitial fibrosis, and the decline in renal function in PKD mice. Here, we investigated the regulation of these processes by the integrin-linked kinase (ILK), a scaffold protein that links the extracellular matrix to the actin cytoskeleton and is stimulated by periostin...
May 18, 2017: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/28522567/myeloid-epithelial-crosstalk-coordinates-synthesis-of-the-tissue-protective-cytokine-leukemia-inhibitory-factor-during-pneumonia
#6
Katrina E Traber, Elise M Symer, Eri Allen, Yuri Kim, Kristie L Hilliard, Gregory A Wasserman, Colin L Stewart, Matthew R Jones, Joseph P Mizgerd, Lee Joseph Quinton
In bacterial pneumonia, lung damage resulting from epithelial cell injury is a major contributor to the severity of disease, and in some cases, can lead to long-term sequelae, especially in the setting of severe lung injury or ARDS. Leukemia inhibitory factor (LIF), a member of the IL-6 cytokine family, is a critical determinant of lung tissue protection during pneumonia, but the cellular sources of LIF and the signaling pathways leading to its production in the infected lung are not known. Here, we demonstrate that lung epithelium, specifically alveolar type II cells, is the predominant site of LIF transcript induction in pneumonic mouse lungs...
May 18, 2017: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/28521004/guidelines-for-the-prevention-and-treatment-of-travelers-diarrhea-a-graded-expert-panel-report
#7
Mark S Riddle, Bradley A Connor, Nicholas J Beeching, Herbert L DuPont, Davidson H Hamer, Phyllis Kozarsky, Michael Libman, Robert Steffen, David Taylor, David R Tribble, Jordi Vila, Philipp Zanger, Charles D Ericsson
Background: : Travelers' diarrhea causes significant morbidity including some sequelae, lost travel time and opportunity cost to both travelers and countries receiving travelers. Effective prevention and treatment are needed to reduce these negative impacts. Methods: : This critical appraisal of the literature and expert consensus guideline development effort asked several key questions related to antibiotic and non-antibiotic prophylaxis and treatment, utility of available diagnostics, impact of multi-drug resistant (MDR) colonization associated with travel and travelers' diarrhea, and how our understanding of the gastrointestinal microbiome should influence current practice and future research...
April 1, 2017: Journal of Travel Medicine
https://www.readbyqxmd.com/read/28520431/anomalous-behavior-of-ultra-low-amplitude-capillary-waves-a-glimpse-of-the-viscoelastic-properties-of-interfacial-water
#8
Antonio Raudino, Domenica Raciti, Mario Corti
We investigate, both theoretically and by a differential interferometric technique, the behavior of large-wavelength capillary waves (of order of 10^-4 m) selectively excited at the surface of drops and bubbles with typical eigenfrequencies of order of 10^2 Hz. The resonance peaks of gas bubbles or hydrocarbon drops in water (radius less than 1 mm) highlight anomalously small dissipation in the region of ultra-low (sub-nanometric) oscillation amplitudes, reaching a plateau at higher amplitudes. This is in sharp contrast to the usual oscillating systems, where an anomalous behavior holds at large amplitudes alone...
May 18, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28518095/use-of-a-central-venous-line-for-fluids-drugs-and-nutrient-administration-in-a-mouse-model-of-critical-illness
#9
Sarah Derde, Steven Thiessen, Chloë Goossens, Thomas Dufour, Greet Van den Berghe, Lies Langouche
This protocol describes a centrally catheterized mouse model of prolonged critical illness. We combine the cecal ligation and puncture method to induce sepsis with the use of a central venous line for fluids, drugs and nutrient administration to mimic the human clinical setting. Critically ill patients require intensive medical support in order to survive. While the majority of patients will recover within a few days, about a quarter of the patients need prolonged intensive care and are at high risk of dying from non-resolving multiple organ failure...
May 2, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28515515/the-parturient-in-the-interventional-radiology-suite-new-frontier-in-obstetric-anaesthesia
#10
REVIEW
Tasneem Dhansura, Nabila Shaikh
The anaesthesiologist's presence during interventional radiology (IR) is increasing due to increasingly ill patients and intricate procedures. The management of a parturient in IR suite is complex in terms of logistics of an unfamiliar procedure in an unfamiliar area. The literature available is largely written by radiologists with little attention paid to anaesthetic details and considerations. In the Indian scenario, in the absence of hybrid operating rooms (ORs), logistics involve transport of a parturient back and forth between the IR suite and the OR...
April 2017: Indian Journal of Anaesthesia
https://www.readbyqxmd.com/read/28515329/inference-of-facultative-mobility-in-the-enigmatic-ediacaran-organism-parvancorina
#11
Simon A F Darroch, Imran A Rahman, Brandt Gibson, Rachel A Racicot, Marc Laflamme
Establishing how Ediacaran organisms moved and fed is critical to deciphering their ecological and evolutionary significance, but has long been confounded by their non-analogue body plans. Here, we use computational fluid dynamics to quantitatively analyse water flow around the Ediacaran taxon Parvancorina, thereby testing between competing models for feeding mode and mobility. The results show that flow was not distributed evenly across the organism, but was directed towards localized areas; this allows us to reject osmotrophy, and instead supports either suspension feeding or detritivory...
May 2017: Biology Letters
https://www.readbyqxmd.com/read/28514324/use-of-the-fluid-challenge-in-critically-ill-adult-patients-a-systematic-review
#12
Antonio Messina, Federico Longhini, Corinne Coppo, Aline Pagni, Ramona Lungu, Chiara Ronco, Marco Ambrogio Cattaneo, Simone Dore, Giovanni Sotgiu, Paolo Navalesi
The fluid challenge (FC) aims at identifying patients in whom fluid administration improves hemodynamics. Although the FC has been extensively studied, the implementation and definition of improvement are not standardized. This systematic review of studies published between January 1, 1994 and December 31, 2014 characterizes these key components of the FC for critically ill adult patients, as described in the medical literature in the last 20 years. A literature search was performed using MEDLINE, Embase, and Cochrane...
May 12, 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28513820/intra-abdominal-hypertension-and-abdominal-compartment-syndrome-in-acute-pancreatitis-hepato-pancreato-biliary-operations-and-liver-transplantation
#13
Alexsander K Bressan, Chad G Ball
Intra-abdominal hypertension, even preceding the onset of abdominal compartment syndrome, is still recognized as an adverse prognostic factor. Unfortunately, most of the current supporting evidence within the critical care environment remains observational in nature. In acute pancreatitis, an active role for intra-abdominal hypertension early in the disease process follows a strong intuitive basis, and it is corroborated by preliminary evidence from animal models. Additional studies are needed to better characterize the optimal fluid resuscitation strategy, as well as the importance of intra-abdominal hypertension as an early therapeutic target...
May 17, 2017: Anaesthesiology Intensive Therapy
https://www.readbyqxmd.com/read/28513739/vapour-liquid-interfacial-properties-of-square-well-chains-from-density-functional-theory-and-monte-carlo-simulation
#14
Francisco José Martínez-Ruiz, Felipe J Blas, A Ignacio Moreno-Ventas Bravo, José Manuel Míguez, Luis G MacDowell
The statistical associating fluid theory for attractive potentials of variable range (SAFT-VR) density functional theory (DFT) developed by [Gloor et al., J. Chem. Phys., 2004, 121, 12740-12759] is used to predict the interfacial behaviour of molecules modelled as fully-flexible square-well chains formed from tangentially-bonded monomers of diameter σ and potential range λ = 1.5σ. Four different model systems, comprising 4, 8, 12, and 16 monomers per molecule, are considered. In addition to that, we also compute a number of interfacial properties of molecular chains from direct simulation of the vapour-liquid interface...
May 17, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28511635/review-of-techniques-to-achieve-optical-surface-cleanliness-and-their-potential-application-to-surgical-endoscopes
#15
Davey Kreeft, Ewout Aart Arkenbout, Paulus Wilhelmus Johannes Henselmans, Wouter R van Furth, Paul Breedveld
A clear visualization of the operative field is of critical importance in endoscopic surgery. During surgery the endoscope lens can get fouled by body fluids (eg, blood), ground substance, rinsing fluid, bone dust, or smoke plumes, resulting in visual impairment. As a result, surgeons spend part of the procedure on intermittent cleaning of the endoscope lens. Current cleaning methods that rely on manual wiping or a lens irrigation system are still far from ideal, leading to longer procedure times, dirtying of the surgical site, and reduced visual acuity, potentially reducing patient safety...
May 1, 2017: Surgical Innovation
https://www.readbyqxmd.com/read/28511029/conceptualizing-ethnicity-in-alcohol-and-drug-research-epidemiology-meets-social-theory
#16
Geoffrey Hunt, Torsten Kolind, Tamar Antin
Since the 1990s, social scientists have rejected notions of ethnicity as something static and discrete, instead highlighting the context-dependent and fluid nature of multiple identities. In spite of these developments, researchers within the substance use fields continue to assess ethnic group categories in ways that suggest little critical reflection in terms of the validity of the measurements themselves, nor the social, bureaucratic, and political decisions shaping standard measures of ethnicity. This paper highlights these considerations, while also acknowledging the role of socially-delineated ethnic categorizations in documenting health inequities and social injustices...
May 16, 2017: Journal of Ethnicity in Substance Abuse
https://www.readbyqxmd.com/read/28510437/spline-based-shape-prediction-and-analysis-of-uniformly-rotating-sessile-and-pendant-droplets
#17
Karan Jakhar, Ashesh Chattopadhyay, Atul Thakur, Rishi Raj
Prediction and analysis of the shapes of liquid-vapor interface of droplets under the influence of external forces is critical for various applications. In this regard, a geometric model which can capture the macroscopic shape of the liquid-vapor interface in tandem with the subtleties near the contact line, particularly in the regime where the droplet shape deviates significantly from the idealized spherical cap geometry, is desirable. Such deviations may occur when external forces such as gravity or centrifugal dominate over the surface tension force...
May 16, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28508858/onset-of-meso-scale-turbulence-in-active-nematics
#18
Amin Doostmohammadi, Tyler N Shendruk, Kristian Thijssen, Julia M Yeomans
Meso-scale turbulence is an innate phenomenon, distinct from inertial turbulence, that spontaneously occurs at low Reynolds number in fluidized biological systems. This spatiotemporal disordered flow radically changes nutrient and molecular transport in living fluids and can strongly affect the collective behaviour in prominent biological processes, including biofilm formation, morphogenesis and cancer invasion. Despite its crucial role in such physiological processes, understanding meso-scale turbulence and any relation to classical inertial turbulence remains obscure...
May 16, 2017: Nature Communications
https://www.readbyqxmd.com/read/28507845/surgical-factors-associated-with-prolonged-hospitalization-after-reconstruction-for-oncological-spine-surgery
#19
Hannah M Carl, Devin Coon, Nicholas A Calotta, Rachel Pedreira, Justin M Sacks
BACKGROUND: Posterior trunk reconstruction is increasingly possible as a result of advances in spinal instrumentation, reconstructive approaches, and perioperative critical care. Extensive cases often require a muscle flap or complex closure to obliterate dead space. Postsurgical wound complications and subsequent reoperations can lead to neural injury, higher hospital costs, and longer hospitalizations. We aim to identify risk factors that are associated with increased length of stay (LOS) for patients receiving flaps to close a spinal defect...
April 2017: Plastic and Reconstructive Surgery. Global Open
https://www.readbyqxmd.com/read/28505752/surface-switching-statistics-of-rotating-fluid-disk-rim-gap-effects
#20
Yuji Tasaka, Makoto Iima
We examined the influence of internal noise on the irregular switching of the shape of the free surface of fluids in an open cylindrical vessel driven by a bottom disk rotating at constant speed [Suzuki, Iima, and Hayase, Phys. Fluids 18, 101701 (2006)PHFLE61070-663110.1063/1.2359740]. A slight increase in the disk-rim gap (less than 3% of the disk radius) was established experimentally to cause significant changes in this system, specifically, frequent appearance of the surface descending event connecting a nonaxisymmetric shape in strong mixing flow (turbulent flow) and an axisymmetric shape in laminar flow, as well as a shift in critical Reynolds number that define the characteristic states...
April 2017: Physical Review. E
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