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Fluid shift*

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https://www.readbyqxmd.com/read/28334407/organismal-and-spatial-partitioning-of-energy-and-macronutrient-transformations-within-a-hypersaline-mat
#1
Jennifer M Mobberley, Stephen R Lindemann, Hans C Bernstein, James J Moran, Ryan S Renslow, Jerome Babauta, Dehong Hu, Haluk Beyenal, William C Nelson
Phototrophic mat communities are model ecosystems for studying energy cycling and elemental transformations because complete biogeochemical cycles occur over millimeter-to-centimeter scales. Characterization of energy and nutrient capture within hypersaline phototrophic mats has focused on specific processes and organisms, however little is known about community-wide distribution of and linkages between these processes. To investigate energy and macronutrient capture and flow through a structured community, the spatial and organismal distribution of metabolic functions within a compact hypersaline mat community from Hot Lake have been broadly elucidated through species-resolved metagenomics and geochemical, microbial diversity, and metabolic gradient measurements...
March 15, 2017: FEMS Microbiology Ecology
https://www.readbyqxmd.com/read/28328660/addressing-the-barriers-to-bioimpedance-spectroscopy-use-in-major-burns-alternate-electrode-placement
#2
Pippa Kenworthy, Tiffany L Grisbrook, Michael Phillips, William Gibson, Fiona M Wood, Dale W Edgar
Bioimpedance spectroscopy (BIS) is a method used to assess body composition and fluid distribution. As a technology for measurement of fluid shifts during acute burn resuscitation, there are potential barriers to its use due to the location of wounds. This study aimed to determine whether alternate electrode positions were a suitable alternative compared to standardized (manufacturer) positions in moderate to large size burns for the measurement of BIS resistance and fluid changes. BIS measurements were collected in standard and alternate electrode placements and in an open wound and Acticoat™ dressing condition...
March 15, 2017: Journal of Burn Care & Research: Official Publication of the American Burn Association
https://www.readbyqxmd.com/read/28317832/-variations-of-oral-fluid-microbiota-in-healthy-children-and-adolescents
#3
B N Davydov, A M Samoukina, E S Mikhailova, O A Gavrilova, Yu A Alekseeva
The aim of the study was to establish the bacterial and viral associations of saliva and the immune resistance in 127 healthy people of different ages. The analysis sorted out three variants of oral fluid microbiota differing by certain combination of indigenous and facultative microflora. It was found that with age there is a significant increase in the number of adolescents with the third variant of the microbiota, characterized by a decrease in the number of indigenous microflora and increase in opportunistic microorganisms and viruses...
2017: Stomatologii︠a︡
https://www.readbyqxmd.com/read/28306518/biochemical-testing-in-a-laboratory-tent-and-semi-intensive-care-of-ebola-patients-on-site-in-a-remote-part-of-guinea-a-paradigm-shift-based-on-a-bleach-sensitive-point-of-care-device
#4
Leonid M Irenge, Jean-Michel Dindart, Jean-Luc Gala
BACKGROUND: During the West Africa Ebola virus disease (EVD) outbreak, a Belgian laboratory was deployed for supporting the Ebola treatment unit (ETU) of N'Zerekore, Guinea. Besides diagnosis of EVD and malaria, biochemical parameters were tested and used to guide supportive treatment of EVD. METHODS: To preserve analytes stability, lithium-heparin blood samples were analyzed using the i-STAT® point-of-care testing (POCT) handheld device without the viral inactivation step...
March 15, 2017: Clinical Chemistry and Laboratory Medicine: CCLM
https://www.readbyqxmd.com/read/28293437/short-latency-gray-matter-changes-in-voxel-based-morphometry-following-high-frequent-visual-stimulation
#5
Steffen Naegel, Tim Hagenacker, Nina Theysohn, Hans-Christoph Diener, Zaza Katsarava, Mark Obermann, Dagny Holle
Magnetic resonance imaging studies using voxel-based morphometry (VBM) detected structural changes in the human brain within periods of months or weeks. The underlying molecular mechanisms of VBM findings remain unresolved. We showed that simple visual stimulation by an alternating checkerboard leads to instant, short-lasting alterations of the primary and secondary visual cortex detected by VBM. The rapidness of occurrence (i.e., within 10 minutes) rather excludes most of the proposed physiological mechanism such as neural or glial cell genesis/degeneration or synapse turnover...
2017: Neural Plasticity
https://www.readbyqxmd.com/read/28292390/penile-incarceration-by-metallic-ring
#6
Muhammad Mansoor
Application of constricting objects over penis for auto-erotic purpose can lead to dangerous results. A variety of metallic and non-metallic objects are used. The removal of these objects is a great challenge. We report a case of a young man who placed a hard metallic ring around his penis for sexual pleasure. A 22-year old man presented in emergency department with complain of painful swelling of his penis since 4 hours. Physical examination revealed part of penis distal to ring as congested and markedly tender with decreased sensation...
February 2017: Journal of the College of Physicians and Surgeons—Pakistan: JCPSP
https://www.readbyqxmd.com/read/28275605/unrelenting-ocular-pain-as-a-masquerading-symptom-of-occult-choroidal-metastasis
#7
Jordan D Deaner, Renelle Pointdujour-Lim, Emil Anthony T Say, Carol L Shields
PURPOSE: To report a case of chronic eye pain as a presenting feature of choroidal metastasis from lung cancer. METHODS: We report the case of a 58-year-old Caucasian woman with stage IV lung adenocarcinoma presenting with an 8-month history of left eye pain and blurred vision. RESULTS: The patient had previously consulted 14 ophthalmologists with varying diagnoses including posterior scleritis and trigeminal neuralgia. Visual acuity at presentation was 20/20 in the right eye and 20/80 in the left eye...
January 2017: Ocular Oncology and Pathology
https://www.readbyqxmd.com/read/28271409/the-effect-of-spaceflight-and-microgravity-on-the-human-brain
#8
Angelique Van Ombergen, Athena Demertzi, Elena Tomilovskaya, Ben Jeurissen, Jan Sijbers, Inessa B Kozlovskaya, Paul M Parizel, Paul H Van de Heyning, Stefan Sunaert, Steven Laureys, Floris L Wuyts
Microgravity, confinement, isolation, and immobilization are just some of the features astronauts have to cope with during space missions. Consequently, long-duration space travel can have detrimental effects on human physiology. Although research has focused on the cardiovascular and musculoskeletal system in particular, the exact impact of spaceflight on the human central nervous system remains to be determined. Previous studies have reported psychological problems, cephalic fluid shifts, neurovestibular problems, and cognitive alterations, but there is paucity in the knowledge of the underlying neural substrates...
March 7, 2017: Journal of Neurology
https://www.readbyqxmd.com/read/28269260/localised-impedance-monitoring-device-for-the-remote-clinical-assessment-of-home-based-dialysis-patients
#9
A Montalibet, W Arkouche, P Bogonez Franco, S Bonnet, A Clarion, G Delhomme, C Gehin, S Gharbi, R Guillemaud, P Jallon, B Massot, P Pham, E Ribbe-Cornet, E McAdams
BioImpedance Spectroscopy (BIS) has been clinically used to determine the hydrational status of patients undergoing haemodialysis (HD). In the present project we are developing a calf-localised, integrated impedimetric device to periodically and conveniently measure and transmit information on the hydrational status of home-based patients to a remote clinic. Surprisingly, we have found that simple postural changes before or during measurement lead to significant fluid shifts in the lower leg that are as important and as long lasting as the effects of haemodialysis...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28269228/leg-fluid-accumulation-during-prolonged-sitting
#10
Daniel Vena, Jonathan Rubianto, Milos Popovic, Azadeh Yadollahi
The accumulation of fluid in the legs due to sedentariness can be a health risk in extreme cases. Negative health impacts associated with leg fluid accumulation include leg edema and risk of blood clots. Furthermore, fluid accumulating in the legs is accompanied by fluid shift into the upper body which is also associated with health risks such as: increased blood pressure when lying down, respiratory problems in people with heart failure, and increased sleep apnea. Understanding the pattern by which fluid accumulates in the legs can aid in the development of devices for reducing leg fluid accumulation...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28267126/psychological-and-physical-environmental-factors-in-the-development-of-incontinence-in-adults-and-children-a-comprehensive-review
#11
Alexander von Gontard, Tom P V M de Jong, Jasmin Katrin Badawi, Kathleen A OʼConnell, Ann T Hanna-Mitchell, Anka Nieuwhof-Leppink, Linda Cardozo
The aim of this review was to identify etiological environmental factors related to incontinence in children and adults. A variety of etiological environmental factors for the development of incontinence were identified. In children, these encompass stressful life events and trauma, family dysfunction, parental psychopathology, school-related stressors, toilet or "potty" training, fluid consumption habits, housing conditions, and the availability of toilets. In adults, physical exercise, obesity, working conditions, fluid intake, and the availability of toilets play a role...
March 2017: Journal of Wound, Ostomy, and Continence Nursing
https://www.readbyqxmd.com/read/28262458/early-management-of-acute-pancreatitis-a-review-of-the-best-evidence
#12
REVIEW
Serena Stigliano, Hanna Sternby, Enrique de Madaria, Gabriele Capurso, Maxim S Petrov
In the 20th century early management of acute pancreatitis often included surgical intervention, despite overwhelming mortality. The emergence of high-quality evidence (randomized controlled trials and meta-analyses) over the past two decades has notably shifted the treatment paradigm towards predominantly non-surgical management early in the course of acute pancreatitis. The present evidence-based review focuses on contemporary aspects of early management (which include analgesia, fluid resuscitation, antibiotics, nutrition, and endoscopic retrograde cholangiopancreatography) with a view to providing clear and succinct guidelines on early management of patients with acute pancreatitis in 2017 and beyond...
February 7, 2017: Digestive and Liver Disease
https://www.readbyqxmd.com/read/28261116/red-flags-clinical-signs-for-identifying-autoimmune-encephalitis-in-psychiatric-patients
#13
Julia Herken, Harald Prüss
Autoimmune mechanisms causing diverse psychiatric symptoms are increasingly recognized and brought about a paradigm shift in neuropsychiatry. Identification of underlying antibodies against neuronal ion channels or receptors led to the speculation that a number of patients go misdiagnosed with a primary psychiatric disease. However, there is no clear consensus which clinical signs in psychiatric patients should prompt further investigations including measurement of anti-neuronal autoantibodies. We therefore aimed to analyze the presenting symptoms in patients with autoimmune encephalitis and the time between symptom onset and initiation of antibody diagnostics...
2017: Frontiers in Psychiatry
https://www.readbyqxmd.com/read/28253704/sound-transmission-loss-through-metamaterial-plate-with-lateral-local-resonators-in-the-presence-of-external-mean-flow
#14
Ting Wang, Meiping Sheng, Qinghua Qin
In the context of sound incident upon a metamaterial plate, explicit formulas for sound transmission loss (STL) are derived in the presence of external mean flow. Metamaterial plate, consisting of homogeneous plate and lateral local resonators (LLRs), is homogenized by using effective medium method to obtain the effective mass density and facilitate the calculation of STL. Results show that (a) vigorously oscillating LLRs lead to higher STL compared with bare plate, (b) increasing Mach number of the external mean flow helps obtain higher STL below the coincidence frequency but decreases STL above the coincidence frequency due to the added mass effect of light fluid loading and aerodynamic damping effect, (c) the coincidence frequency shifts to higher frequency range for the refracted effect of the external mean flow...
February 2017: Journal of the Acoustical Society of America
https://www.readbyqxmd.com/read/28253669/acoustic-streaming-generated-by-two-orthogonal-standing-waves-propagating-between-two-rigid-walls
#15
Alexander A Doinikov, Pierre Thibault, Philippe Marmottant
An analytical solution is derived for the acoustic streaming generated by two orthogonal standing waves in a fluid confined between two plane rigid walls. It is assumed that the standing waves have the same frequency but, in general, are out of phase. The main restriction is that the boundary layer thickness is much smaller than the acoustic wavelength. It is shown that the acoustic streaming gives rise to vortices in which fluid particles, when moving between the walls, are rotating about axes perpendicular to the walls...
February 2017: Journal of the Acoustical Society of America
https://www.readbyqxmd.com/read/28249568/by-more-ways-than-one-rapid-convergence-at-hydrothermal-vents-shown-by-3d-anatomical-reconstruction-of-gigantopelta-mollusca-neomphalina
#16
Chong Chen, Katsuyuki Uematsu, Katrin Linse, Julia D Sigwart
BACKGROUND: Extreme environments prompt the evolution of characteristic adaptations. Yet questions remain about whether radiations in extreme environments originate from a single lineage that masters a key adaptive pathway, or if the same features can arise in parallel through convergence. Species endemic to deep-sea hydrothermal vents must accommodate high temperature and low pH. The most successful vent species share a constrained pathway to successful energy exploitation: hosting symbionts...
March 1, 2017: BMC Evolutionary Biology
https://www.readbyqxmd.com/read/28249204/fabrication-of-nitrogen-doped-carbon-dots-for-screening-the-purine-metabolic-disorder-in-human-fluids
#17
N S K Gowthaman, Bharathi Sinduja, Rangasamy Karthikeyan, K Rubini, S Abraham John
Fabrication of nitrogen-doped carbon dots (N-CDs) electrode for the screening of purine metabolic disorder was described in this paper. Peroxynitrite is a short-lived oxidant species that is a potent inducer of cell death. Uric acid (UA) can scavenge the peroxynitrite to avoid the formation of nitrotyrosine, which is formed from the reaction between peroxynitrite and tyrosine (Try). Scavenging the peroxynitrite avoids the inactivation of cellular enzymes and modification of the cytoskeleton. Reduced level of UA decreases the ability of the body from preventing the peroxynitrite toxicity...
February 24, 2017: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/28245820/unconventional-combinations-of-prospective-parents-ethical-challenges-faced-by-ivf-providers
#18
Robert Klitzman
BACKGROUND: Professional guidelines have addressed ethical dilemmas posed by a few types of nontraditional procreative arrangements (e.g., gamete donations between family members), but many questions arise regarding how providers view and make decisions about these and other such arrangements. METHODS: Thirty-seven ART providers and 10 patients were interviewed in-depth for approximately 1 h each. Interviews were systematically analyzed. RESULTS: Providers faced a range of challenges and ethical dilemmas concerning both the content and the process of decisions about requests for unconventional interfamilial and other reproductive combinations...
February 28, 2017: BMC Medical Ethics
https://www.readbyqxmd.com/read/28242824/gender-differences-in-tibial-microvascular-flow-responses-to-head-down-tilt-and-lower-body-negative-pressure
#19
Jamila H Siamwala, Brandon R Macias, Paul C Lee, Alan R Hargens
The purpose of the investigation was to study lower body negative pressure recovery in response to head down tilt position in men and women. The study examined the primary hypothesis that tibial bone microvascular flow responses to HDT and lower body negative pressure (LBNP) differ in women and men. Nine women and nine men between 20 to 30 years of age participated in the study. Tibial microvascular flow, head and tibial oxygenation and calf circumference were measured using photoplethysmography (PPG), near-infrared spectroscopy (NIRS) and strain gauge plethysmography (SGP), respectively, during sitting (control baseline), supine, 15° HDT, and 15° HDT with 25 mmHg LBNP Tibial microvascular flow with HDT increased by 57% from supine position (from 1...
February 2017: Physiological Reports
https://www.readbyqxmd.com/read/28238385/distributive-shock-in-the-emergency-department-sepsis-anaphylaxis-or-capillary-leak-syndrome
#20
Cansu Alyeşil, Nurettin Özgür Doğan, İbrahim Ulaş Özturan, Seda Güney
BACKGROUND: Distributive shock is a hyperdynamic process resulting from excessive vasodilatation. Impaired blood flow causes inadequate tissue perfusion, which can lead to end-organ damage. Although the most common etiology is septic shock, anaphylactic and other etiologies should be considered. CASE REPORT: We report the case of a 30-year-old female who presented to the emergency department with nonspecific symptoms and hypotension after a viral upper respiratory infection...
February 18, 2017: Journal of Emergency Medicine
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