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https://www.readbyqxmd.com/read/29782304/role-of-in-vivo-reflectance-confocal-microscopy-in-the-analysis-of-melanocytic-lesions
#1
Elena-Daniela Serban, Francesca Farnetani, Giovanni Pellacani, Maria Magdalena Constantin
Worldwide melanoma incidence and mortality are increasing (1). Despite the ongoing research, advanced melanoma is still incurable; therefore, the most appropriate solution seems to be early detection combined with complete surgical excision (2). Since the diagnostic protocol of suspicious lesions includes a complete excision with safety margins (2), the problem of unnecessary scarring is significant. The real challenge in this case is to have a properly formulated diagnosis before acquiring a biopsy. Currently available non-invasive techniques are coherence tomography, digital dermoscopy, and reflectance confocal microscopy...
April 2018: Acta Dermatovenerologica Croatica: ADC
https://www.readbyqxmd.com/read/29779398/handoff-tool-enabling-standardized-transitions-between-the-emergency-department-and-the-hospitalist-inpatient-service-at-a-major-cancer-center
#2
Carmen E Gonzalez, Norman Brito-Dellan, Srinivas R Banala, David Rubio, Mohamed Ait Aiss, Terry W Rice, Karen Chen, Diane C Bodurka, Carmelita P Escalante
Communication failures during patient handoff can lead to serious errors. A quality improvement team created a standardized handoff tool/process (DE-PASS: Decisive problem requiring admission, Evaluation time, Patient summary, Acute issues/action list, Situation unfinished/awareness, Signed out to) for admitting patients from the emergency department (ED) to the hospitalist inpatient service of a tertiary cancer center. DE-PASS mirrors the institution's ED workflow, stratifies patients as stable/urgent/emergent, and establishes requirements for verbal and email communications between providers...
May 1, 2018: American Journal of Medical Quality: the Official Journal of the American College of Medical Quality
https://www.readbyqxmd.com/read/29779047/over-diagnosis-of-potential-malignant-behavior-in-men-2a-associated-pheochromocytomas-using-the-pass-and-gapp-algorithms
#3
Adam Stenman, Jan Zedenius, Carl Christofer Juhlin
PURPOSE: Pheochromocytomas (PCCs) exhibit malignant potential, but current histological modalities for the proper detection of aggressive behavior are debated. The two most widespread algorithms are the "Pheochromocytoma of the Adrenal Gland Scaled Score" (PASS) and the "Grading System for Adrenal Pheochromocytoma and Paraganglioma" (GAPP), both which mostly rely on histological parameters to identify PCC patients at risk of disseminated disease. Since the algorithms are derived from studies using predominantly sporadic PCCs, little is known whether the PASS or GAPP scores can predict malignant potential in hereditary cases...
May 19, 2018: Langenbeck's Archives of Surgery
https://www.readbyqxmd.com/read/29777629/mechanisms-of-metformin-action-in-and-out-of-the-gut
#4
EDITORIAL
Takahiro Minamii, Munenobu Nogami, Wataru Ogawa
One hundred years have passed since guanidine, a precursor compound of biguanides and thus of metformin, was found to have a glucose-lowering effect in live animals1 . In this historical study, C. K. Watanabe1 did not set out to identify glucose-lowering agents but rather to understand the mechanism underlying the development of tetany in animals that have undergone parathyroidectomy. Watanabe 1 concluded that guanidine is a pathogenic factor responsible for tetany because its administration in rabbits resulted in "tetany-like" muscle cramps associated with low blood glucose levels...
May 19, 2018: Journal of Diabetes Investigation
https://www.readbyqxmd.com/read/29776432/a-comprehensive-postpartum-follow-up-health-care-program-for-women-with-history-of-preeclampsia-protocol-for-a-mixed-methods-research
#5
Mastaneh Kamravamanesh, Shahnaz Kohan, Negin Rezavand, Ziba Farajzadegan
BACKGROUND: Long-term postpartum follow-up is of great importance since women with preeclampsia history are at high risk of upcoming health complications. However, postpartum follow-up rates are poor. According to evidences, preeclampsia is not just a transient health problem; rather it causes short term and long term complications, which affect women's life for years after delivery. Although it seems the problem is solved by the end of pregnancy, the follow-up of subjects should not be stopped after delivery...
May 18, 2018: Reproductive Health
https://www.readbyqxmd.com/read/29774406/reduced-global-myocardial-perfusion-reserve-in-dcm-and-hcm-patients-assessed-by-cmr-based-velocity-encoded-coronary-sinus-flow-measurements-and-first-pass-perfusion-imaging
#6
Michael Bietenbeck, Anca Florian, Zornitsa Shomanova, Claudia Meier, Ali Yilmaz
BACKGROUND: Coronary microvascular dysfunction (CMD) is an independent predictor of poor prognosis in patients suffering from dilative or hypertrophic cardiomyopathy (DCM/HCM). To assess CMD, quantitative myocardial first-pass perfusion (1P) cardiovascular magnetic resonance (CMR) can be performed. Coronary sinus flow (CSF) measurements at rest and during maximal vasodilatation are an alternative and well-validated approach for the quantification of global myocardial blood flow (MBF) in CMR...
May 17, 2018: Clinical Research in Cardiology: Official Journal of the German Cardiac Society
https://www.readbyqxmd.com/read/29773924/mercury-in-the-diatoms-of-various-ecological-formations
#7
Magdalena Bełdowska, Aleksandra Zgrundo, Justyna Kobos
Mercury is a neurotoxin, its main source in the human organism being fish and seafood. The first level in the marine food web is formed of planktonic and benthic photosynthetic microorganisms, which form a biofilm on the surface of the hard bottom (epilithon) or plants (epiphyton). They are carriers of nutritional as well as toxic substances and pass these on to subsequent levels of the trophic web. Their biomass is often dominated by diatoms. This was the basis for the presented study into Hg accumulation in epilithic, epiphytic and planktonic diatoms, which was carried out in 2012-2013 in the coastal zone of the Puck Lagoon and the Gulf of Gdańsk (southern Baltic)...
2018: Water, Air, and Soil Pollution
https://www.readbyqxmd.com/read/29772895/reversible-assembly-of-a-drug-peptide-into-amyloid-fibrils-a-dynamic-circular-dichroism-study
#8
Frédéric Gobeaux, Frank Wien
The common view on the amyloid fibril formation is that it is a multistep process that involves many oligomeric intermediate species, which leads to a high degree of polymorphism. This view derives from numerous kinetic studies whose vast majority was carried out with amyloid β fragments or other pathological amyloidogenic sequences. Yet, it is not clear whether the mechanisms inferred from these studies are universal and also apply to functional amyloids, in particular to peptide hormones which form reversible amyloid structures...
May 18, 2018: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/29772732/observing-apod-with-the-auscope-vlbi-array
#9
Andreas Hellerschmied, Lucia McCallum, Jamie McCallum, Jing Sun, Johannes Böhm, Jianfeng Cao
The possibility to observe satellites with the geodetic Very Long Baseline Interferometry (VLBI) technique is vividly discussed in the geodetic community, particularly with regard to future co-location satellite missions. The Chinese APOD-A nano satellite can be considered as a first prototype-suitable for practical observation tests-combining the techniques Satellite Laser Ranging (SLR), Global Navigation Satellite Systems (GNSS) and VLBI on a single platform in a Low Earth Orbit (LEO). Unfortunately, it has hardly been observed by VLBI, so major studies towards actual frame ties could not be performed...
May 16, 2018: Sensors
https://www.readbyqxmd.com/read/29770140/seventeen-year-journey-working-with-a-master
#10
Jinfang Zhu
It had been a great honor for me to work with the late Dr. William E. Paul for 17 years in the Laboratory of Immunology (LI) from 1998 until his passing in 2015. He was such a master in the immunology field. Under his outstanding guidance, my research has been focusing on transcriptional regulation of T helper (Th) cell differentiation, especially, on the role of a master transcription factor GATA3 during Th2 cell differentiation. Just as enormous scientific contributions of Dr. Paul (we all call him Bill) to the immunology community are far beyond his serving as the Chief of the LI, GATA3 also plays important roles in different lymphocytes at various developmental stages besides its critical functions in Th2 cells...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29767827/directing-citizens-to-create-advance-directives
#11
Sophie Haesen, David Shaw
This article describes the Swiss law on advance directives that was passed at the beginning of 2013 and led to more certainty about the legally binding character of such directives. However, for various reasons the drafting of advance directives is not yet widespread in Switzerland, and many resources might be put to better use if this became a common practice. A recent proposal by members of a political party to make the discussion, although not the actual drafting, of advance directives mandatory was rejected by the Swiss Federal Parliament, and the proposal was written off after having been pending for 2 years...
May 16, 2018: Swiss Medical Weekly
https://www.readbyqxmd.com/read/29763986/early-iv-injected-human-dermis-derived-mesenchymal-stem-cells-after-transient-global-cerebral-ischemia-do-not-pass-through-damaged-blood-brain-barrier
#12
Ji Hyeon Ahn, Bai Hui Chen, Joon Ha Park, Bich Na Shin, Tae-Kyeong Lee, Jeong Hwi Cho, Jae Chul Lee, Jeong-Ran Park, Se-Ran Yang, Sungwoo Ryoo, Myoung Cheol Shin, Jun Hwi Cho, Il Jun Kang, Choong Hyun Lee, In Koo Hwang, Young-Myeong Kim, Moo-Ho Won
There is lack of researches on effects of intravenously injected mesenchymal stem cells (MSCs) against transient cerebral ischemia (TCI). We investigated the disruption of the neurovascular unit (NVU), which comprises the blood-brain barrier (BBB) and examined entry of human dermis-derived MSCs (hDMSCs) into the damaged hippocampal CA1 area in a gerbil model of TCI, and their subsequent effects on neuroprotection and cognitive function. Impairments of neurons, and BBB were examined by immunohistochemistry, electron microscopy, and Evans blue and immunoglobulin G (IgG) leakage...
May 15, 2018: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/29760375/effect-of-ankle-range-of-motion-rom-and-lower-extremity-muscle-strength-on-static-balance-control-ability-in-young-adults-a-regression-analysis
#13
Seong-Gil Kim, Wan-Soo Kim
BACKGROUND The purpose of this study was to investigate the effect of ankle ROM and lower-extremity muscle strength on static balance control ability in young adults. MATERIAL AND METHODS This study was conducted with 65 young adults, but 10 young adults dropped out during the measurement, so 55 young adults (male: 19, female: 36) completed the study. Postural sway (length and velocity) was measured with eyes open and closed, and ankle ROM (AROM and PROM of dorsiflexion and plantarflexion) and lower-extremity muscle strength (flexor and extensor of hip, knee, and ankle joint) were measured...
May 15, 2018: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29755143/likely-transiting-exocomets-detected-by-kepler
#14
S Rappaport, A Vanderburg, T Jacobs, D LaCourse, J Jenkins, A Kraus, A Rizzuto, D W Latham, A Bieryla, M Lazarevic, A Schmitt
We present the first good evidence for exocomet transits of a host star in continuum light in data from the Kepler mission. The Kepler star in question, KIC 3542116, is of spectral type F2V and is quite bright at Kp = 10. The transits have a distinct asymmetric shape with a steeper ingress and slower egress that can be ascribed to objects with a trailing dust tail passing over the stellar disk. There are three deeper transits with depths of ≃ 0.1% that last for about a day, and three that are several times more shallow and of shorter duration...
February 21, 2018: Monthly Notices of the Royal Astronomical Society
https://www.readbyqxmd.com/read/29754206/convective-influx-glymphatic-system-tracers-injected-into-the-csf-enter-and-leave-the-brain-along-separate-periarterial-basement-membrane-pathways
#15
Nazira J Albargothy, David A Johnston, Matthew MacGregor-Sharp, Roy O Weller, Ajay Verma, Cheryl A Hawkes, Roxana O Carare
Tracers injected into CSF pass into the brain alongside arteries and out again. This has been recently termed the "glymphatic system" that proposes tracers enter the brain along periarterial "spaces" and leave the brain along the walls of veins. The object of the present study is to test the hypothesis that: (1) tracers from the CSF enter the cerebral cortex along pial-glial basement membranes as there are no perivascular "spaces" around cortical arteries, (2) tracers leave the brain along smooth muscle cell basement membranes that form the Intramural Peri-Arterial Drainage (IPAD) pathways for the elimination of interstitial fluid and solutes from the brain...
May 12, 2018: Acta Neuropathologica
https://www.readbyqxmd.com/read/29751297/tidal-fluxes-of-mercury-and-methylmercury-for-mendall-marsh-penobscot-river-estuary-maine
#16
R R Turner, C P J Mitchell, A D Kopec, R A Bodaly
Tidal marshes are both important sites of in situ methylmercury production and can be landscape sources of methylmercury to adjacent estuarine systems. As part of a regional investigation of the Hg-contaminated Penobscot River and Bay system, the tidal fluxes of total suspended solids, total mercury and methylmercury into and out of a regionally important mesohaline fluvial marsh complex, Mendall Marsh, were intensively measured over several tidal cycles and at two spatial scales to assess the source-sink function of the marsh with respect to the Penobscot River...
May 8, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29740194/opinions-of-israeli-neonatologists-about-life-and-death-decisions-in-neonates
#17
Moshe Y Kasirer, Francis B Mimouni, Alona Bin-Nun, Michael S Schimmel
BACKGROUND: In 2005, the Israeli parliament passed the "law of dying patients" legalizing life and death decisions (do not resuscitate) in patients with life expectancy less than 6 months. OBJECTIVE: To determine whether ethnic and religious backgrounds (both religion and religiosity) influence neonatologists' attitudes in simulated clinical situations and opinions about the new law. DESIGN/METHODS: Prospective design, using standard questionnaire sent to all 155 board-certified practising Israeli Neonatologists...
May 8, 2018: Journal of Perinatology: Official Journal of the California Perinatal Association
https://www.readbyqxmd.com/read/29737631/a-fluid-structure-interaction-fsi-based-numerical-investigation-of-peristalsis-in-an-obstructed-human-ureter
#18
Ahmed Tasnub Takaddus, Prashanta Gautam, Abhilash J Chandy
Urine moves from the kidney to the bladder through the ureter. A series of compression waves facilitates this transport. Due to the highly concentrated mineral deposits in urine, stones are formed in the kidney and travel down through the urinary tract. While passing, a larger stone can get stuck and cause severe damage to ureter wall. Also, stones in the ureter obstructing the urine flow can cause pain and backflow of urine which in turn might require surgical intervention. The current study develops a 2D axisymmetric numerical model in order to gain an understanding of the ureter obstruction and its effects on the flow, which are critical in assessing the different treatment options...
May 8, 2018: International Journal for Numerical Methods in Biomedical Engineering
https://www.readbyqxmd.com/read/29736515/water-transport-and-desalination-through-double-layer-graphyne-membranes
#19
Mojdeh Akhavan, Jeremy Schofield, Seifollah Jalili
Non-equilibrium molecular dynamics simulations of water-salt solutions driven through single and double-layer graphyne membranes by a pressure difference created by rigid pistons are carried out to determine the relative performance of the membranes as filters in a reverse osmosis desalination process. It is found that the flow rate of water through a graphyne-4 membrane is twice that of a graphyne-3 membrane for both single and double-layer membranes. Although the addition of a second layer to a single-layer membrane reduces the membrane permeability, the double-layer graphyne membranes are still two or three orders of magnitude more permeable than commercial reverse osmosis membranes...
May 8, 2018: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/29736398/educational-software-applied-in-teaching-electrocardiogram-a-systematic-review
#20
REVIEW
Paulo A I Pontes, Rafael O Chaves, Roberto C Castro, Érica F de Souza, Marcos C R Seruffo, Carlos R L Francês
Background: The electrocardiogram (ECG) is the most used diagnostic tool in medicine; in this sense, it is essential that medical undergraduates learn how to interpret it correctly while they are still on training. Naturally, they go through classic learning (e.g., lectures and speeches). However, they are not often efficiently trained in analyzing ECG results. In this regard, methodologies such as other educational support tools in medical practice, such as educational software, should be considered a valuable approach for medical training purposes...
2018: BioMed Research International
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