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https://www.readbyqxmd.com/read/29145289/mercury-poisoning-through-intravenous-administration-two-case-reports-with-literature-review
#1
Qiuying Lu, Zilong Liu, Xiaorui Chen
RATIONALE: Metallic mercury poisoning through intravenous injection is rare, especially for a homicide attempt. Diagnosis and treatment of the disease are challenging. PATIENT CONCERNS: A 34-year-old male presented with pyrexia, chill, fatigue, body aches, and pain of the dorsal aspect of right foot. Another case is that of a 29-year-old male who committed suicide by injecting himself metallic mercury 15 g intravenously and presented with dizzy, dyspnea, fatigue, sweatiness, and waist soreness...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29141932/umbilical-artery-perforation-a-potentially-life-threatening-complication-of-umbilical-artery-catheterisation
#2
Daniel Molanus, Machteld van Scherpenzeel, Joep Derikx, Frank van den Dungen
Umbilical artery catheterisation is frequently performed in preterm or critically ill newborn infants for invasive monitoring of blood pressure and blood sampling for laboratory tests. It is associated with well-known complications like catheter-related infections, thromboembolic events and aneurysmal formation of the aorta. In this report, we present another major complication of umbilical artery catheterisation: umbilical artery perforation. This complication occurred in a prematurely born infant and resulted in severe haemorrhagic shock, subsequent renal failure and severe periventricular leukomalacia...
November 14, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/29139209/protocol-for-a-new-concept-of-no-prep-ultrathin-ceramic-veneers
#3
Camillo D'Arcangelo, Mirco Vadini, Maurizio D'Amario, Zaccheo Chiavaroli, Francesco De Angelis
OBJECTIVES: No-prep veneers, although ideally considered the best option because of tooth structure maximum preservation, have been frequently criticized for some potential limitations including esthetic outcomes and periodontal complications. CLINICAL CONSIDERATIONS: A new protocol to optimize no-prep veneers restorations is presented. A key point of the proposed technique is to identify optimal margins' positions: margin is positioned in the point of maximum convexity of teeth, avoiding the over contouring of traditional no-prep veneers...
November 15, 2017: Journal of Esthetic and Restorative Dentistry
https://www.readbyqxmd.com/read/29136611/gut-microbiota-in-health-and-disease
#4
Yuichiro Yamashiro
Intestinal regulatory T (Treg) cells are critical to maintaining immune tolerance to dietary antigens and gut microbiota. This paper reviews several papers on this topic that were recently published by Japanese researchers. Specifically, Prof. K. Honda and his group have found that commensal microbiota capable of metabolizing butyrate induces the differentiation of colonic Treg cells. In a separate work, Prof. Y. Yokoyama and his group used a novel, culture-independent analytical method (the Yakult Intestinal Flora-Scan) for detection of bacteria in the bloodstream...
November 14, 2017: Annals of Nutrition & Metabolism
https://www.readbyqxmd.com/read/29132408/using-semantics-for-representing-experimental-protocols
#5
Olga Giraldo, Alexander García, Federico López, Oscar Corcho
BACKGROUND: An experimental protocol is a sequence of tasks and operations executed to perform experimental research in biological and biomedical areas, e.g. biology, genetics, immunology, neurosciences, virology. Protocols often include references to equipment, reagents, descriptions of critical steps, troubleshooting and tips, as well as any other information that researchers deem important for facilitating the reusability of the protocol. Although experimental protocols are central to reproducibility, the descriptions are often cursory...
November 13, 2017: Journal of Biomedical Semantics
https://www.readbyqxmd.com/read/29115284/double-edged-effect-of-electric-field-on-the-mechanical-property-of-water-filled-carbon-nanotubes-with-an-application-to-nanoscale-trigger
#6
Hongfei Ye, Yonggang Zheng, Lili Zhou, Junfei Zhao, Hong Wu Zhang, Zhen Chen
Polar water molecules would exhibit extraordinary phenomena under nanoscale confinement. By means of electric field, the water-filled carbon nanotube (CNT) that has been successfully fabricated in laboratory is expected to make distinct responses to the external electricity. Here, we examine the effect of electric field direction on the mechanical property of water-filled CNTs. It is found that the longitudinal electric field enhances but the transversal electric field reduces the elastic modulus and critical buckling stress of water-filled CNTs...
November 8, 2017: Nanotechnology
https://www.readbyqxmd.com/read/29113093/view-point-semaphorin-3e-an-emerging-modulator-of-natural-killer-cell-functions
#7
REVIEW
Abdulaziz Alamri, Abdelilah Soussi Gounni, Sam K P Kung
Semaphorin-3E (Sema-3E) is a member of a large family of proteins originally identified as axon guidance cues in neural development. It is expressed in different cell types, such as immune cells, cancer cells, neural cells, and epithelial cells. Subsequently, dys-regulation of Sema-3E expression has been reported in various biological processes that range from cancers to autoimmune and allergic diseases. Recent work in our laboratories revealed a critical immunoregulatory role of Sema-3E in experimental allergic asthma...
November 5, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29110776/psychiatric-syndromes-other-than-dementia
#8
Karl Bechter, Florian Deisenhammer
There is wide variability in how psychiatry guidelines and textbooks address the question of cerebrospinal fluid (CSF) diagnostics in the screening of psychiatric disorders. A United States-based textbook confirms that there is no consensus about which laboratory investigation should be routinely performed in psychiatric patients, but with respect to CSF diagnostics, the differences are even more striking. A survey among European experts showed a wide variety of opinions regarding clinical use and criteria in various countries of Europe and worldwide: some psychiatrists, mostly university hospital-based, recommended performing CSF diagnostics in every patient first experiencing severe mental illness (SMI), but especially in patients from the schizophrenia spectrum, whereas others almost never perform CSF examinations themselves and usually refer patients to neurology departments if necessary...
2017: Handbook of Clinical Neurology
https://www.readbyqxmd.com/read/29109898/limbal-stem-cell-deficiency-and-treatment-with-stem-cell-transplantation
#9
REVIEW
Özlem Barut Selver, Ayşe Yağcı, Sait Eğrilmez, Mehmet Gürdal, Melis Palamar, Türker Çavuşoğlu, Utku Ateş, Ali Veral, Çağrı Güven, Jose Mario Wolosin
The cornea is the outermost tissue of the eye and it must be transparent for the maintenance of good visual function. The superficial epithelium of the cornea, which is renewed continuously by corneal stem cells, plays a critical role in the permanence of this transparency. These stem cells are localized at the cornea-conjunctival transition zone, referred to as the limbus. When this zone is affected/destroyed, limbal stem cell deficiency ensues. Loss of limbal stem cell function allows colonization of the corneal surface by conjunctival epithelium...
October 2017: Turkish Journal of Ophthalmology
https://www.readbyqxmd.com/read/29104037/critical-review-of-2016-acc-guidelines-on-therapies-for-cholesterol-lowering-with-reference-to-laboratory-testing
#10
REVIEW
Stanley S Levinson
INTRODUCTION: This review discusses new guidelines that were released in 2016 and 2017 for assessing risk of coronary disease (ASCVD) and treatments and that appear to have replaced the 2013 guidelines which superseded the National Cholesterol Education Program Adult Treatment Panel Guidelines (ATP). To put the new guidelines in prospective, I briefly review the history of prior guidelines. The newest guidelines seem to support the idea that elevated LDL cholesterol (C) is a cause of ASCVD...
November 2, 2017: Clinica Chimica Acta; International Journal of Clinical Chemistry
https://www.readbyqxmd.com/read/29096655/complete-mimicry-a-case-of-alveolar-rhabdomyosarcoma-masquerading-as-acute-leukemia
#11
Osamu Imataki, Makiko Uemura, Shumpei Uchida, Shigeyuki Yokokura, Akihiro Takeuchi, Ryo Ishikawa, Akihiro Kondo, Kayoko Seo, Norimitsu Kadowaki
BACKGROUND: A small number of rhabdomyosarcoma (RMS) cases involve the bone marrow. A leukemic presentation of RMS has been reported in a few case series, although almost all cases of leukemic RMS are not completely mimicking leukemia. We encountered a case with RMS cell infiltration of the bone marrow that resembled floating hematological cells. CASE PRESENTATION: We encountered a rare case of a 15-year-old boy with a 2-week history of left femoral pain. Upon admission, he was afebrile with no other symptoms...
November 2, 2017: Diagnostic Pathology
https://www.readbyqxmd.com/read/29082998/water-dynamics-in-hydrated-amorphous-materials-a-molecular-dynamics-study-of-the-effects-of-dehydration-in-amorphous-calcium-carbonate
#12
Moumita Saharay, R James Kirkpatrick
Amorphous calcium carbonate (ACC) is often a critical transient phase in the formation of crystalline phases of CaCO3via dehydration of hydrated ACC. The behavior of the water molecules plays a pivotal role in this transformation. We report here the dynamics of water molecules in ACC at hydration levels from CaCO3·1H2O to CaCO3·0.25H2O using molecular dynamics (MD) simulations. Due to the presence of highly hydrophilic Ca(2+) and the strong H-bond acceptor CO3(2-), most of the water molecules in our simulations have restricted translational and orientational dynamics...
November 8, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/29066485/new-alert-message-settings-for-the-xn-series-automated-hematology-analyzer-are-useful-for-avoiding-falsely-high-wbc-counts-and-to-detect-specimens-with-giant-platelets
#13
Tohru Inaba, Bunta Shimomoto, Yoichi Yuki, Keita Okumura, Hiroshi Nishimura, Katsuhiro Koshino, Shuji Nobori, Atsushi Wada, Naohisa Fujita
We encountered blood specimens from a patient with MYH9 related diseases, which gave falsely high white blood cell (WBC) counts during laboratory analysis using Sysmex XN-series automated hematology analyzers. This overcount was revealed to be caused by the overlapping of platelet (PLT) distribution with the WBC area in the WNR channel, which was used for routine WBC count with the XN-series. On the other hand, the WBC count obtained through the WDF channel of the XN-series seemed more accurate in such a case...
September 2017: Annals of Clinical and Laboratory Science
https://www.readbyqxmd.com/read/29035261/the-effect-of-acidification-on-the-bioavailability-and-electrochemical-lability-of-zinc-in-seawater
#14
Ja-Myung Kim, Oliver Baars, François M M Morel
A poorly studied but potentially important consequence of the CO2-induced acidification of the surface ocean is a possible change in the bioavailability of trace metals, which play a critical role in the productivity and population dynamics of marine ecosystems. We report laboratory and field experiments designed to compare quantitatively the effects of acidification on the bioavailability of Zn, a metal essential to the growth of phytoplankton and on the extent of its complexation by model and natural ligands...
November 28, 2016: Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences
https://www.readbyqxmd.com/read/29031303/current-advances-and-challenges-in-microfluidic-free-flow-electrophoresis-a-critical-review
#15
REVIEW
Pedro Novo, Dirk Janasek
The research field on microfluidic free-flow electrophoresis has developed vast amounts of devices, methods, applications and raised new questions, often in analogy to conventional techniques from which it derives. Most efforts have been employed on device development and a myriad of architectures and fabrication techniques have been reported using simple proof-of-principle separations. As technological aspects reach a quite mature state, researchers' new challenges include the development of protocols for the separation of complex mixtures, as required in the fields of application...
October 23, 2017: Analytica Chimica Acta
https://www.readbyqxmd.com/read/29029804/a-weight-of-evidence-approach-for-the-bioaccumulation-assessment-of-triclosan-in-aquatic-species
#16
REVIEW
Jon A Arnot, Sascha Pawlowski, Samantha Champ
The bioaccumulation assessment of chemicals is challenging because of various metrics and criteria, multiple lines of evidence and underlying uncertainty in the data. Measured in vivo laboratory and field bioaccumulation data are generally considered preferable; however, quantitative structure-activity relationships (QSARs), mass balance models and in vitro data can also be considered. This case study critically evaluates in vivo, in vitro and in silico data and provides new data for the bioaccumulation assessment of triclosan (TCS)...
October 10, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29028420/the-effect-of-telemedicine-on-resource-utilization-and-hospital-disposition-in-critically-ill-pediatric-transport-patients
#17
Kimberly Fugok, Nicholas B Slamon
PURPOSE: Pediatric transport teams rely on communication to report patient data to medical command officers, who create care plans and determine disposition. Common destinations are the emergency department (ED), pediatric intensive care unit (PICU), or regular inpatient care area (RIPCA). Telephone report does not result in complete understanding of the patient's condition. Further workup in the ED is often required. Telemedicine allows the patient to be directly seen; parents to be interviewed; and laboratory studies, radiographs, and vital signs to be reviewed...
October 13, 2017: Telemedicine Journal and E-health: the Official Journal of the American Telemedicine Association
https://www.readbyqxmd.com/read/29023316/septic-shock-resuscitation-in-the-first-hour
#18
Nicholas Simpson, Francois Lamontagne, Manu Shankar-Hari
PURPOSE OF REVIEW: We reviewed the recent advances in the initial approach to resuscitation of sepsis and septic shock patients. RECENT FINDINGS: Sepsis and septic shock are life-threatening emergencies. Two key interventions in the first hour include timely antibiotic therapy and resuscitation. Before any laboratory results, the need for resuscitation is considered if a patient with suspected infection has low blood pressure (BP) or impaired peripheral circulation found at clinical examination...
December 2017: Current Opinion in Critical Care
https://www.readbyqxmd.com/read/29017389/the-canadian-laboratory-initiative-on-pediatric-reference-intervals-a-caliper-white-paper
#19
Khosrow Adeli, Victoria Higgins, Karin Trajcevski, Nicole White-Al Habeeb
Laboratory investigations provide physicians with objective data to aid in disease diagnosis, clinical decision making, and patient follow up. Clinical interpretation of laboratory test results relies heavily on the availability of appropriate population-based reference intervals (i.e. normative values) or decision limits developed through clinical outcome studies. Although reference intervals are fundamental to accurate laboratory test interpretation, and thus critically important to healthcare, the need for sound evidence-based reference intervals has been largely overlooked, particularly in the pediatric population...
October 11, 2017: Critical Reviews in Clinical Laboratory Sciences
https://www.readbyqxmd.com/read/28975721/rapid-guest-exchange-and-ultra-low-surface-tension-solvents-optimize-metal-organic-framework-activation
#20
Jialiu Ma, Andre P Kalenak, Antek G Wong-Foy, Adam J Matzger
Exploratory research into the critical steps in metal-organic framework (MOF) activation involving solvent exchange and solvent evacuation are reported. It is discovered that solvent exchange kinetics are extremely fast, and minutes rather days are appropriate for solvent exchange in many MOFs. It is also demonstrated that choice of a very low surface tension solvent is critical in successfully activating challenging MOFs. MOFs that have failed to be activated previously can achieve predicted surface areas provided that lower surface tension solvents, such as n-hexane and perfluoropentane, are applied...
October 3, 2017: Angewandte Chemie
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