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https://www.readbyqxmd.com/read/29145616/variation-in-methylmercury-metabolism-and-elimination-status-mermes-in-humans-following-fish-consumption
#1
Samuel W Caito, Brian P Jackson, Tracy Punshon, Thomas Scrimale, Alex Grier, Steven R Gill, Tanzy M Love, Gene E Watson, Edwin van Wijngaarden, Matthew D Rand
Evaluating the potential for methylmercury (MeHg) toxicity relies on accurately predicting the mercury (Hg) body burden that results from eating fish. Hg body burden is directly determined by the slow elimination kinetics of MeHg in the human body (kel ∼0.014days-1 or t1/2∼ 50days). Existing studies on MeHg half-life in humans demonstrate a wide range values (t1/2 = 30 to > 150days) and has lead to uncertainty in the derivation of a regulatory standard for acceptable daily oral intake. The causes of variation in MeHg toxicokinetics in humans remain little explored...
November 14, 2017: Toxicological Sciences: An Official Journal of the Society of Toxicology
https://www.readbyqxmd.com/read/29145421/radiographic-prediction-of-meningioma-grade-by-semantic-and-radiomic-features
#2
Thibaud P Coroller, Wenya Linda Bi, Elizabeth Huynh, Malak Abedalthagafi, Ayal A Aizer, Noah F Greenwald, Chintan Parmar, Vivek Narayan, Winona W Wu, Samuel Miranda de Moura, Saksham Gupta, Rameen Beroukhim, Patrick Y Wen, Ossama Al-Mefty, Ian F Dunn, Sandro Santagata, Brian M Alexander, Raymond Y Huang, Hugo J W L Aerts
OBJECTIVES: The clinical management of meningioma is guided by tumor grade and biological behavior. Currently, the assessment of tumor grade follows surgical resection and histopathologic review. Reliable techniques for pre-operative determination of tumor grade may enhance clinical decision-making. METHODS: A total of 175 meningioma patients (103 low-grade and 72 high-grade) with pre-operative contrast-enhanced T1-MRI were included. Fifteen radiomic (quantitative) and 10 semantic (qualitative) features were applied to quantify the imaging phenotype...
2017: PloS One
https://www.readbyqxmd.com/read/29145212/does-anaemia-have-major-public-health-importance-in-children-aged-6-59-months-in-the-duggina-fanigo-district-of-wolaita-zone-southern-ethiopia
#3
Yohannes Samuel Tiku, Tefera Chane Mekonnen, Shimelash Bitew Workie, Endale Amare
BACKGROUND: Globally, a large number of children aged 6-59 months are affected by anaemia. In Ethiopia, like other developing countries, more than 40% of children under 5 years are affected by anaemia. Anaemia during infancy and childhood period is associated with poor health and impaired cognitive development, leading to reduced academic achievement and earning potential in their adult life. The aim of this research was to assess whether anaemia remained a major public health problem among children aged 6-59 months or not in Duggina Fanigo District of Wolaita Zone, South Ethiopia in 2016...
November 16, 2017: Annals of Nutrition & Metabolism
https://www.readbyqxmd.com/read/29144580/higher-retransplantation-rate-following-extended-right-split-liver-transplantation-an-analysis-from-the-eurotransplant-liver-follow-up-registry
#4
J Andrassy, S Wolf, M Lauseker, M Angele, M D van Rosmalen, U Samuel, X Rogiers, J Werner, M Guba
Split liver transplantation (SLT) has been perceived as an important strategy to increase the supply of liver grafts by creating 2 transplants from 1 allograft. The Eurotransplant allocation system (ELAS) envisages that the ERLs after splitting (usually in the pediatric center) are almost exclusively shipped to a second center. Whether the ELAS policy impacts the graft and patient survival of ERLT in comparison to WLT recipients remains unclear. Data on all LTs performed between 2007 and 2013 were retrieved from the ET Liver follow-up Registry (n=5351)...
November 16, 2017: Liver Transplantation
https://www.readbyqxmd.com/read/29144534/building-and-strengthening-capacity-for-cardiovascular-research-in-africa-through-technical-training-workshops-a-report-of-the-joint-course-on-health-research-methods-by-the-clinical-research-education-networking-and-consultancy-and-the-ivorian-society-of-cardiology
#5
Bonaventure Suiru Dzekem, Jean Baptiste Kacou, Martin Abanda, Euloge Kramoh, Yves Yapobi, Samuel Kingue, Andre Pascal Kengne, Anastase Dzudie
Africa bears a quarter of the global burden of disease but contributes less than 2% of the global research publications on health, partially due to a lack of expertise and skills to carry out scientific research. We report on a short course on research methods organised by the Clinical Research Education Networking and Consultancy (CRENC) during the third international congress of the Ivorian Cardiac Society (SICARD) in Abidjan, Cote d'Ivoire. Results from the pre- and post-test evaluation during this course showed that African researchers could contribute more to scientific research and publications, provided adequate support and investment is geared towards the identification and training of motivated early-career scientists...
September 2017: Cardiovascular Journal of Africa
https://www.readbyqxmd.com/read/29144392/design-and-development-of-a-novel-upper-limb-cycling-prosthesis
#6
Akira Tiele, Shivam Soni-Sadar, Jack Rowbottom, Shilen Patel, Edward Mathewson, Samuel Pearson, David Hutchins, John Head, Stephen Hutchins
The rise in popularity of the Paralympics in recent years has created a need for effective, low-cost sports-prosthetic devices for upper-limb amputees. There are various opportunities for lower-limb amputees to participate in cycling; however, there are only few options for those with upper-limb amputations. If the individual previously participated in cycling, a cycling-specific prosthesis could allow these activities to be integrated into rehabilitation methods. This article describes the processes involved with designing, developing and manufacturing such a prosthesis...
November 16, 2017: Bioengineering
https://www.readbyqxmd.com/read/29144125/impacts-of-repeated-redox-cycling-on-technetium-mobility-in-the-environment
#7
Nicholas Karl Masters-Waage, Katherine Morris, Jonathan R Lloyd, Samuel Shaw, J Frederick Willem Mosselmans, Christopher Boothman, Pieter Bots, Athanasios Rizoulis, Francis R Livens, Gareth T W Law
Technetium is a problematic contaminant at nuclear sites and little is known about how repeated microbiologically-mediated redox cycling impacts its fate in the environment. We explore this question in sediments representative of the Sellafield Ltd. site, UK, over multiple reduction and oxidation cycles spanning ~ 1.5 years. We found the amount of Tc remobilised from the sediment into solution significantly decreased after repeated redox cycles. X-ray Absorption Spectroscopy (XAS) confirmed that sediment bound Tc was present as hydrous TcO2-like chains throughout experimentation and that Tc's increased resistance to remobilisation (via reoxidation to soluble TcO4-) resulted from both shortening of TcO2 chains during redox cycling and association of Tc(IV) with Fe phases in the sediment...
November 16, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/29144010/self-assembly-and-surface-patterning-of-polyferrocenylsilane-functionalized-gold-nanoparticles
#8
Rachelle M Choueiri, Anna Klinkova, Samuel Pearce, Ian Manners, Eugenia Kumacheva
Chemical and topographic surface patterning of inorganic polymer-functionalized nanoparticles (NPs) and their self-assembly in nanostructures with controllable architectures enable the design of new NP-based materials. Capping of NPs with inorganic polymer ligands, such as metallopolymers, can lead to new synergetic properties of individual NPs or their assemblies, and enhance NP processing in functional materials. Here, for gold NPs functionalized with polyferrocenylsilane, two distinct triggers are used to induce attraction between the polymer ligands and achieve NP self-assembly or topographic surface patterning of individual polymer-capped NPs...
November 16, 2017: Macromolecular Rapid Communications
https://www.readbyqxmd.com/read/29143817/greater-post-neolithic-wealth-disparities-in-eurasia-than-in-north-america-and-mesoamerica
#9
Timothy A Kohler, Michael E Smith, Amy Bogaard, Gary M Feinman, Christian E Peterson, Alleen Betzenhauser, Matthew Pailes, Elizabeth C Stone, Anna Marie Prentiss, Timothy J Dennehy, Laura J Ellyson, Linda M Nicholas, Ronald K Faulseit, Amy Styring, Jade Whitlam, Mattia Fochesato, Thomas A Foor, Samuel Bowles
How wealth is distributed among households provides insight into the fundamental characters of societies and the opportunities they afford for social mobility. However, economic inequality has been hard to study in ancient societies for which we do not have written records, which adds to the challenge of placing current wealth disparities into a long-term perspective. Although various archaeological proxies for wealth, such as burial goods or exotic or expensive-to-manufacture goods in household assemblages, have been proposed, the first is not clearly connected with households, and the second is confounded by abandonment mode and other factors...
November 15, 2017: Nature
https://www.readbyqxmd.com/read/29143704/identification-of-clostridium-difficile-reservoirs-in-the-patient-environment-and-efficacy-of-aerial-hydrogen-peroxide-decontamination
#10
Samuel Yui, Shanom Ali, Monika Muzslay, Annette Jeanes, A Peter R Wilson
OBJECTIVE To identify, using a novel enhanced method of recovery, environmental sites where spores of Clostridium difficile persist despite cleaning and hydrogen peroxide aerial decontamination. DESIGN Cohort study. SETTING Tertiary referral center teaching hospital. METHODS In total, 16 sites representing high-frequency contact or difficult-to-clean surfaces in a single-isolation room or bed area in patient bed bays were sampled before and after terminal or hydrogen peroxide disinfection using a sponge swab...
November 16, 2017: Infection Control and Hospital Epidemiology
https://www.readbyqxmd.com/read/29143660/efficacy-of-10-imidacloprid-%C3%A2-2-5-moxidectin-topical-solution-advantage-multi-%C3%A2-for-dogs-for-the-prevention-of-heartworm-disease-and-infection-all-month-long
#11
Dwight D Bowman, Cameon M Ohmes, Joseph A Hostetler, Daniel J Keil, Terry L Settje, Samuel D Charles
BACKGROUND: Prior work has shown that the levels of moxidectin in dogs treated with Advantage Multi® for Dogs (Bayer Animal Health) remain at a high plasma concentration for the full month after application. The objective of this study was to demonstrate the efficacy of 10% imidacloprid + 2.5% moxidectin topical solution (Advantage Multi® for Dogs, also known as Advocate® for Dogs) for the prevention of heartworm infection and disease 30 days after just one application. METHODS: Two groups of eight dogs each were included...
November 9, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/29143538/dynamics-of-postural-control-during-repetitive-transcranial-magnetic-stimulation-in-an-adult-with-major-depressive-disorder
#12
Thibault Deschamps, Anne Sauvaget, Edouard-Jules Laforgue, Samuel Bulteau, Véronique Thomas-Ollivier
No abstract text is available yet for this article.
November 1, 2017: Australian and New Zealand Journal of Psychiatry
https://www.readbyqxmd.com/read/29142620/elevated-blood-urea-nitrogen-creatinine-ratio-is-associated-with-venous-thromboembolism-in-patients-with-acute-ischemic-stroke
#13
Hoon Kim, Kiwon Lee, Huimahn A Choi, Sophie Samuel, Jung Hyn Park, Kwang Wook Jo
Objective: Although venous thromboembolism (VTE) is frequently related to dehydration, the impact of dehydration on VTE in acute ischemic stroke (AIS) is not clear. This study investigated whether dehydration, as measured by blood urea nitrogen (BUN)/creatinine (Cr) ratio, influences the occurrence of VTE in patients with AIS. Methods: This is a retrospective study of patients with AIS between January 2012 and December 2013. Patients with newly diagnosed AIS who experienced prolonged hospitalization for at least 4 weeks were included in this study...
November 2017: Journal of Korean Neurosurgical Society
https://www.readbyqxmd.com/read/29142490/postoperative-elevated-resistive-indices-do-not-predict-hepatic-artery-thrombosis-in-extended-criteria-donor-livers
#14
Eric J Siskind, Fauzia Vandermeer, Tamar R Siskind, David A Bruno, Samuel Sultan, Josue Alvarez-Casas, Arielle Stafford, Barton Lane, John C Lamattina, Rolf N Barth, Steven I Hanish
Postoperative transplant liver ultrasounds were analyzed in standard criteria donor (SCD), extended criteria donor (ECD), and donation after cardiac death (DCD) liver allografts to determine if elevated resistive indices (RIs) are consistently present and if they are pathological. Postoperative transplant liver ultrasounds were reviewed from 115 consecutive patients. Hepatic arterial RIs were stratified based on the type of donor: DCD, macrosteatosis (>30%), or standard criteria. In all patients with elevated RI, subsequent ultrasounds were reviewed to demonstrate RI normalization...
December 2017: International Journal of Angiology: Official Publication of the International College of Angiology, Inc
https://www.readbyqxmd.com/read/29142467/non-celiac-gluten-sensitivity-all-wheat-attack-is-not-celiac
#15
REVIEW
Samuel O Igbinedion, Junaid Ansari, Anush Vasikaran, Felicity N Gavins, Paul Jordan, Moheb Boktor, Jonathan S Alexander
Currently, 1% of the United States population holds a diagnosis for celiac disease (CD), however, a more recently recognized and possibly related condition, "non-celiac gluten sensitivity" (NCGS) has been suggested to affect up to 6% of the United States public. While reliable clinical tests for CD exist, diagnosing individuals affected by NCGS is still complicated by the lack of reliable biomarkers and reliance upon a broad set of intestinal and extra intestinal symptoms possibly provoked by gluten. NCGS has been proposed to exhibit an innate immune response activated by gluten and several other wheat proteins...
October 28, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/29142310/sodium-channel-nav1-3-is-important-for-enterochromaffin-cell-excitability-and-serotonin-release
#16
Peter R Strege, Kaitlyn Knutson, Samuel J Eggers, Joyce H Li, Fan Wang, David Linden, Joseph H Szurszewski, Lorin Milescu, Andrew B Leiter, Gianrico Farrugia, Arthur Beyder
In the gastrointestinal (GI) epithelium, enterochromaffin (EC) cells are enteroendocrine cells responsible for producing >90% of the body's serotonin (5-hydroxytryptamine, 5-HT). However, the molecular mechanisms of EC cell function are poorly understood. Here, we found that EC cells in mouse primary cultures fired spontaneous bursts of action potentials. We examined the repertoire of voltage-gated sodium channels (NaV) in fluorescence-sorted mouse EC cells and found that Scn3a was highly expressed. Scn3a-encoded NaV1...
November 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29142176/evaluation-of-the-human-relevance-of-the-constitutive-androstane-receptor-mediated-mode-of-action-for-rat-hepatocellular-tumor-formation-by-the-synthetic-pyrethroid-momfluorothrin
#17
Yu Okuda, Masahiko Kushida, Hiroko Kikumoto, Yoshimasa Nakamura, Hashihiro Higuchi, Satoshi Kawamura, Samuel M Cohen, Brian G Lake, Tomoya Yamada
High dietary levels of the non-genotoxic synthetic pyrethroid momfluorothrin increased the incidence of hepatocellular tumors in male and female Wistar rats. Mechanistic studies have demonstrated that the mode of action (MOA) for momfluorothrin-induced hepatocellular tumors is constitutive androstane receptor (CAR)-mediated. In the present study, to evaluate the potential human carcinogenic risk of momfluorothrin, the effects of momfluorothrin (1-1,000 µM) and a major metabolite Z-CMCA (5-1,000 µM) on hepatocyte replicative DNA synthesis and CYP2B mRNA expression were examined in cultured rat and human hepatocyte preparations...
2017: Journal of Toxicological Sciences
https://www.readbyqxmd.com/read/29142115/males-harm-females-less-when-competing-with-familiar-relatives
#18
Samuel J Lymbery, Leigh W Simmons
Sexual conflict occurs when reproductive partners have different fitness optima, and can lead to the evolution of traits in one sex that inflict fitness costs on the opposite sex. Recently, it has been proposed that antagonism by males towards females should be reduced when they compete with relatives, because reducing the future productivity of a female would result in an indirect fitness cost for a harmful male. We tested this prediction in the seed beetle Callosobruchus maculatus, the males of which harm females with genital spines and pre-copulatory harassment...
November 29, 2017: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/29142004/advances-in-the-management-of-men2
#19
Samuel Wells
Medullary thyroid carcinoma (MTC), a tumor derived from the neural crest, occurs either sporadically or as the dominant component of the type 2 multiple endocrine neoplasia (MEN) syndromes, MEN2A and MEN2B. The discovery that mutations in the RET protooncogene cause hereditary MTC was of great importance, since it led to the development of novel methods of diagnosis and treatment. For example, the detection of a mutated RET allele in family members at risk for inheriting MEN2A or MEN2B signaled that they would develop MTC, and possibly other components of the syndromes...
November 15, 2017: Endocrine-related Cancer
https://www.readbyqxmd.com/read/29141986/arfgap1-restricts-mycobacterium-tuberculosis-entry-by-controlling-the-actin-cytoskeleton
#20
Ok-Ryul Song, Christophe J Queval, Raffaella Iantomasi, Vincent Delorme, Sabrina Marion, Romain Veyron-Churlet, Elisabeth Werkmeister, Michka Popoff, Isabelle Ricard, Samuel Jouny, Nathalie Deboosere, Frank Lafont, Alain Baulard, Edouard Yeramian, Laurent Marsollier, Eik Hoffmann, Priscille Brodin
The interaction of Mycobacterium tuberculosis (Mtb) with pulmonary epithelial cells is critical for early stages of bacillus colonization and during the progression of tuberculosis. Entry of Mtb into epithelial cells has been shown to depend on F-actin polymerization, though the molecular mechanisms are still unclear. Here, we demonstrate that mycobacterial uptake into epithelial cells requires rearrangements of the actin cytoskeleton, which are regulated by ADP-ribosylation factor 1 (Arf1) and phospholipase D1 (PLD1), and is dependent on the M3 muscarinic receptor (M3R)...
November 15, 2017: EMBO Reports
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