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https://www.readbyqxmd.com/read/29668135/-costs-of-chagas-disease-screening-test-in-blood-donors-in-two-colombian-blood-banks-2015
#1
Nelson José Alvis, Diana Patricia Díaz, Liliana Castillo, Nelson Rafael Alvis, María Isabel Bermúdez, Olga Maritza Berrío, Mauricio Beltrán, Carlos Andrés Castañeda-Orjuela
INTRODUCTION: Transfusion is a mechanism of transmission of Chagas' disease. There are no studies on the costs of the screening test in Colombian blood banks. OBJECTIVE: To estimate the costs of the screening test for Chagas' disease among blood donors in two Colombian blood banks, 2015. MATERIALS AND METHODS: We conducted a micro-costing study from the perspective of the health care provider to estimate the cost of Chagas' disease testing in two blood banks, Banco de Sangre de la Cruz Roja, Seccional Bolívar, and Banco de Sangre del Hospital de Yopal, Casanare, taking into account four cost categories: 1) Administrative costs: public services and insurance costs were calculated based on the blood bank area in square meters; 2) capital costs: building and equipment costs that were annualized using a 3% discount rate and a lifespan of 20 years for building and five for equipment; 3) costs of Chagas' disease test materials and reagents adjusted by blood bank production level, and 4) costs of staff in charge of Chagas' disease test processing...
March 15, 2018: Biomédica: Revista del Instituto Nacional de Salud
https://www.readbyqxmd.com/read/29668018/how-strong-was-the-bottleneck-associated-to-the-peopling-of-the-americas-new-insights-from-multilocus-sequence-data
#2
Nelson J R Fagundes, Alice Tagliani-Ribeiro, Rohina Rubicz, Larissa Tarskaia, Michael H Crawford, Francisco M Salzano, Sandro L Bonatto
In spite of many genetic studies that contributed for a deep knowledge about the peopling of the Americas, no consensus has emerged about important parameters such as the effective size of the Native Americans founder population. Previous estimates based on genomic datasets may have been biased by the use of admixed individuals from Latino populations, while other recent studies using samples from Native American individuals relied on approximated analytical approaches. In this study we use resequencing data for nine independent regions in a set of Native American and Siberian individuals and a full-likelihood approach based on isolation-with-migration scenarios accounting for recent flow between Asian and Native American populations...
2018: Genetics and Molecular Biology
https://www.readbyqxmd.com/read/29667560/can-the-tea-tree-oil-australian-native-plant-melaleuca-alternifolia-cheel-be-an-alternative-treatment-for-human-demodicosis-on-skin
#3
Nelson Siu Kei Lam, Xin Xin Long, Robert C Griffin, Mu-Kai Chen, James Cg Doery
Australian tea tree oil (TTO) and its extract terpinen-4-ol (T4O) are found to be effective in moderating demodex-related diseases. Their possible effects are lowering the mite counts, relieving the demodex-related symptoms and modulating the immune system especially the inflammatory response. This review summarizes the topical treatments of TTO and T4O in human demodicosis, their possible mechanism of actions, side-effects and potential resistance in treating this condition. Although current treatments other than TTO and T4O are relatively effective in controlling the demodex mite population and the related symptoms, more research on the efficacy and drug delivery technology is needed in order to assess its potential as an alternative treatment with minimal side-effect profile, low toxicity and low risk of demodex resistance...
April 18, 2018: Parasitology
https://www.readbyqxmd.com/read/29667118/acmt-position-statement-alternative-or-contingency-countermeasures-for-acetylcholinesterase-inhibiting-agents
#4
Andrew Stolbach, Vikhyat Bebarta, Michael Beuhler, Shaun Carstairs, Lewis Nelson, Michael Wahl, Paul M Wax, Charles McKay
First responders and health care providers must prepare to provide care for patients poisoned by acetylcholinesterase (AchE) inhibitor chemical warfare agents or pesticides. However, pre-deployed medical countermeasures (MCMs) may not be sufficient due to production and delivery interruption, rapid depletion of contents during a response, expiration of MCM components, or lack of local availability of approved MCMs. To augment supplies of community-based and forward-deployed nerve agent countermeasures, the American College of Medical Toxicology (ACMT) supports several strategies: (1) The use of expired atropine, diazepam, and pralidoxime auto-injectors and vials if non-expired drugs are unavailable; and (2) Investigation, development, and identification of alternative countermeasures-commonly stocked drugs that are not approved for nerve agent poisoning but are in the same therapeutic class as approved drugs...
April 17, 2018: Journal of Medical Toxicology: Official Journal of the American College of Medical Toxicology
https://www.readbyqxmd.com/read/29667088/terry-s-nails-clinical-correlations-in-adult-outpatients
#5
Nick Nelson, Kweku Hayfron, Alejandro Diaz, Scott Lynch, Irene Yen, Allison Bakamjian, Indhu Subramanian
No abstract text is available yet for this article.
April 17, 2018: Journal of General Internal Medicine
https://www.readbyqxmd.com/read/29666839/the-structure-of-the-nucleus-in-normal-and-neoplastic-prostate-cells-untangling-the-role-of-type-2-dna-topoisomerases
#6
REVIEW
William G Nelson, Michael C Haffner, Srinivasan Yegnasubramanian
Donald S. Coffey, a pioneer in the study of the structural basis of mammalian genome organization, was fascinated by DNA topoisomerases, chemo-mechanical enzymes that could catalyze changes in DNA structure. Work initiated in his laboratory and carried on with his influence and inspiration has led to the elucidation of specific roles for each of the two type 2 topoisomerases in DNA replication, RNA transcription, and androgen action in prostate cells. TOP2A principally acts in DNA synthesis elongation to prevent tangling of daughter DNA molecules during genome replication and mitotic segregation; TOP2B is required for androgen-stimulation of target gene transcription...
2018: American Journal of Clinical and Experimental Urology
https://www.readbyqxmd.com/read/29666410/author-correction-supersaturation-controlled-microcrystallization-and-visualization-analysis-for-serial-femtosecond-crystallography
#7
Dan Bi Lee, Jong-Min Kim, Jong Hyeon Seok, Ji-Hye Lee, Jae Deok Jo, Ji Young Mun, Chelsie Conrad, Jesse Coe, Garrett Nelson, Brenda Hogue, Thomas A White, Nadia Zatsepin, Uwe Weierstall, Anton Barty, Henry Chapman, Petra Fromme, John Spence, Mi Sook Chung, Chang-Hyun Oh, Kyung Hyun Kim
A correction to this article has been published and is linked from the HTML and PDF versions of this paper. The error has been fixed in the paper.
April 17, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29665853/microsatellite-instability-in-prostate-cancer-by-pcr-or-next-generation-sequencing
#8
Jennifer A Hempelmann, Christina M Lockwood, Eric Q Konnick, Michael T Schweizer, Emmanuel S Antonarakis, Tamara L Lotan, Bruce Montgomery, Peter S Nelson, Nola Klemfuss, Stephen J Salipante, Colin C Pritchard
BACKGROUND: Microsatellite instability (MSI) is now being used as a sole biomarker to guide immunotherapy treatment for men with advanced prostate cancer. Yet current molecular diagnostic tests for MSI have not been evaluated for use in prostate cancer. METHODS: We evaluated two next-generation sequencing (NGS) MSI-detection methods, MSIplus (18 markers) and MSI by Large Panel NGS (> 60 markers), and compared the performance of each NGS method to the most widely used 5-marker MSI-PCR detection system...
April 17, 2018: Journal for Immunotherapy of Cancer
https://www.readbyqxmd.com/read/29665795/design-and-methods-of-the-removal-hd-study-a-trial-evaluating-mid-cut-off-value-membrane-clearance-of-albumin-and-light-chains-in-haemodialysis-patients
#9
R Krishnasamy, C M Hawley, M J Jardine, M A Roberts, Y J Cho, M G Wong, A Heath, C L Nelson, S Sen, P F Mount, E M Pascoe, D Darssan, L A Vergara, P A Paul-Brent, N D Toussaint, D W Johnson, C A Hutchison
BACKGROUND: Removal of uraemic toxins is inadequate using current dialysis strategies. A new class of dialysis membranes have been developed that allow clearance of larger middle molecules. The REMOVAL-HD study (a tRial Evaluating Mid cut-Off Value membrane clearance of Albumin and Light chains in HaemoDialysis patients) will address safety, efficacy and the impact on patient-centred outcomes with the use of a mid cut-off (MCO) dialyser in a chronic haemodialysis (HD) population. METHODS: REMOVAL-HD is an open label, prospective, non-randomised, single-arm, multi-centre device study in 85 chronic HD participants...
April 17, 2018: BMC Nephrology
https://www.readbyqxmd.com/read/29665446/absence-of-tetb-identifies-minocycline-susceptible-isolates-of-acinetobacter-baumannii
#10
Olga Lomovskaya, Dongxu Sun, Debora Rubio-Aparicio, Kirk J Nelson, Visanu Thamlikitkul, Michael N Dudley, Mark A Redell
BACKGROUND: Minocycline is one of the few options available to treat infections caused by Acinetobacter baumannii. Acquired resistance is associated with the presence of the TetB efflux pump. Previous studies suggest that the absence of tetB may predict minocycline MICs of ≤4 mg/L. METHODS: A collection of 258 isolates of A. baumannii was used to generate MIC frequency distributions for the tetB positive and negative sets of isolates. RESULTS: Of the tetB-negative strains, all 93 had minocycline MICs ≤4 mg/L, resulting in a negative predictive value of 100%...
April 14, 2018: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/29665402/n-acetylcysteine-inhibits-mancozeb-induced-impairments-to-the-normal-development-of-zebrafish-embryos
#11
Dennis Guilherme Costa-Silva, Luana Paganotto Leandro, Pratícia Brum Vieira, Nelson Rodrigues de Carvalho, Andressa Rubim Lopes, Lucia Emanueli Schimith, Mauro Eugênio Medina Nunes, Renata Siqueira de Mello, Illana Kemmerich Martins, Adriano Alves de Paula, Andrés Delgado Cañedo, José Cláudio Fonseca Moreira, Thais Posser, Jeferson Luis Franco
Mancozeb (MZ), a manganese/zinc-containing ethylene-bis-dithiocarbamate (EBCD) fungicide has been claimed to present low acute toxicity and short environmental persistence, however, its effects on embryogenesis in non-target organisms is unclear. Here, we used zebrafish embryos (5 hpf) to assess the potential embryotoxic effects induced by MZ (up to 72 hpf) as well as the role of reactive oxygen species (ROS) in this process by pre-treatment with a classical antioxidant (N-acetylcysteine, NAC). Markers of reactive oxygen species production (ROS), glutathione (GSH) levels and glutathione S-transferase (GST) activity were measured along with genotoxicity (comet assay), cell death (Acridine Orange) and behavioral parameters (spontaneous movement, touch stimulation and swimming response), in order to determine potential mechanisms of embryotoxicity...
April 14, 2018: Neurotoxicology and Teratology
https://www.readbyqxmd.com/read/29665064/tourism-labor-embodied-suffering-and-the-deportation-regime-in-the-dominican-republic
#12
Mark Padilla, José Félix Colón-Burgos, Nelson Varas-Díaz, Armando Matiz-Reyes, Caroline Mary Parker
In this article, we use syndemic theory to examine socio-structural factors that result in heightened vulnerability to HIV infection and drug addiction among Dominican deportees who survive post-deportation through informal tourism labor. Through an ongoing NIDA-funded ethnographic study of the syndemic of HIV and problematic drug use among men involved in tourism labor in the Dominican Republic, we argue that the legal and political-economic context of the global deportation regime contributes to structural vulnerabilities among deportees in the Dominican Republic, most of whom are men with histories of incarceration in the United States and/or Puerto Rico...
April 17, 2018: Medical Anthropology Quarterly
https://www.readbyqxmd.com/read/29665048/a-neural-biomarker-the-error-related-negativity-predicts-the-first-onset-of-generalized-anxiety-disorder-in-a-large-sample-of-adolescent-females
#13
Alexandria Meyer, Brady Nelson, Greg Perlman, Daniel N Klein, Roman Kotov
OBJECTIVE: An increased neural response to making mistakes has emerged as a potential biomarker of anxiety across development. The error-related negativity (ERN) is an event-related potential elicited when people make mistakes on simple laboratory-based reaction time tasks that has been associated with risk for anxiety. This study examined whether the ERN prospectively predicted the first onset of generalized anxiety disorder (GAD) over 1.5 years in adolescent girls. METHODS: The sample included 457 girls between the ages of 13...
April 17, 2018: Journal of Child Psychology and Psychiatry, and Allied Disciplines
https://www.readbyqxmd.com/read/29665030/dermatologic-toxicity-from-novel-therapy-using-antimicrobial-peptide-ll-37-in-melanoma-a-detailed-examination-of-the-clinicopathologic-features
#14
Tsetan Dolkar, Celestine M Trinidad, Kelly C Nelson, Rodabe N Amaria, Priyadharsini Nagarajan, Carlos A Torres-Cabala, Doina Ivan, Victor G Prieto, Michael T Tetzlaff, Jonathan L Curry, Phyu P Aung
LL-37 is a naturally occurring 37-amino acid that is part of innate immunity in human skin. Preclinical studies have demonstrated that intra-tumoral injections of LL-37 stimulate the innate immune system by activation of plasmacytoid dendritic cells, which mediate tumor destruction. LL-37 intra-tumoral injections have been utilized in a Phase 1 clinical trial for melanoma patients with cutaneous metastases. We report dermatologic toxicity in a 63-year-old woman with stage IIIC melanoma of the right calf and inguinal lymph nodes...
April 17, 2018: Journal of Cutaneous Pathology
https://www.readbyqxmd.com/read/29664796/long-term-outcomes-with-ifosfamide-based-hypofractionated-preoperative-chemoradiotherapy-for-extremity-soft-tissue-sarcomas
#15
Joseph Daniel Pennington, Fritz C Eilber, Frederick R Eilber, Arun S Singh, Jarred P Reed, Bartosz Chmielowski, Jeffrey J Eckardt, Susan V Bukata, Nicholas M Bernthal, Noah Federman, Scott D Nelson, Sarah M Dry, Pin-Chieh Wang, Michael Luu, Michael T Selch, Michael L Steinberg, Anusha Kalbasi, Mitchell Kamrava
OBJECTIVES: The objective of this study was to analyze outcomes for patients with soft tissue sarcoma of the extremities using neoadjuvant ifosfamide-based chemotherapy and hypofractionated reduced dose radiotherapy, followed by limb-sparing surgery. MATERIALS AND METHODS: An Institutional Review Board (IRB)-approved retrospective review of patients treated at a single institution between 1990 and 2013 was performed. In total, 116 patients were identified who received neoadjuvant ifosfamide-based chemotherapy and 28 Gy in 8 fractions of preoperative radiation (equivalent dose in 2 Gray fractions, 31...
April 16, 2018: American Journal of Clinical Oncology
https://www.readbyqxmd.com/read/29664691/cost-analysis-of-single-dose-hepatitis-b-revaccination-among-infants-born-to-hepatitis-b-surface-antigen-positive-mothers-and-not-responding-to-the-initial-vaccine-series
#16
Eric W Hall, Eli S Rosenberg, Monica Trigg, Noele Nelson, Sarah Schillie
OBJECTIVES: Infants born to mothers who are hepatitis B surface antigen (HBsAg) positive are at risk for perinatal hepatitis B infection. As prevention, these infants receive a series of 3 or 4 doses of hepatitis B vaccine starting at birth and postvaccination serologic testing. Infants with antibody levels <10 mIU/mL are considered vaccine nonresponders and should be revaccinated. The objective of this cost analysis was to assess a single-dose revaccination strategy among infant nonresponders...
January 1, 2018: Public Health Reports
https://www.readbyqxmd.com/read/29663552/sex-differences-in-the-drivers-of-reproductive-skew-in-a-cooperative-breeder
#17
Martha J Nelson-Flower, Tom P Flower, Amanda R Ridley
Many cooperatively breeding societies are characterized by high reproductive skew, such that some socially dominant individuals breed, while socially subordinate individuals provide help. Inbreeding avoidance serves as a source of reproductive skew in many high-skew societies, but few empirical studies have examined sources of skew operating alongside inbreeding avoidance, or compared individual attempts to reproduce (reproductive competition) with individual reproductive success. Here we use long-term genetic and observational data to examine factors affecting reproductive skew in the high-skew cooperatively breeding southern pied babbler (Turdoides bicolor)...
April 16, 2018: Molecular Ecology
https://www.readbyqxmd.com/read/29663458/hepatitis-a-vaccine-immune-response-22-years-after-vaccination
#18
Emily Mosites, Prabhu Gounder, Mary Snowball, Julie Morris, Philip Spradling, Noele Nelson, Lisa Bulkow, Michael Bruce, Brian McMahon
In the United States, the incidence of hepatitis A virus (HAV) infection has been reduced through universal childhood vaccination. However, the duration of immunogenicity for the hepatitis A vaccine is not known. We report on the 22 year follow-up time point of a cohort of Alaska children who were randomized to three different vaccine schedules: A) 0,1,2 months; B) 0,1,6 months; and C) 0,1,12 months. Among 46 participant available for follow-up, 40 (87%) maintained protective levels of anti-hepatitis A antibody...
April 16, 2018: Journal of Medical Virology
https://www.readbyqxmd.com/read/29663076/amino-acid-composition-reveals-functional-diversity-of-zooplankton-in-tropical-lakes-related-to-geography-taxonomy-and-productivity
#19
Nelson J Aranguren-Riaño, Cástor Guisande, Jonathan B Shurin, Natalie T Jones, Aldo Barreiro, Santiago R Duque
Variation in resource use among species determines their potential for competition and co-existence, as well as their impact on ecosystem processes. Planktonic crustaceans consume a range of micro-organisms that vary among habitats and species, but these differences in resource consumption are difficult to characterize due to the small size of the organisms. Consumers acquire amino acids from their diet, and the composition of tissues reflects both the use of different resources and their assimilation in proteins...
April 16, 2018: Oecologia
https://www.readbyqxmd.com/read/29662220/uranium-transport-in-acidic-brines-under-reducing-conditions
#20
Alexander Timofeev, Artaches A Migdisov, Anthony E Williams-Jones, Robert Roback, Andrew T Nelson, Hongwu Xu
The behavior of uranium in environments, ranging from those of natural systems responsible for the formation of uranium deposits to those of nuclear reactors providing 11% of the world's electricity, is governed by processes involving high-temperature aqueous solutions. It has been well documented that uranium is mobile in aqueous solutions in its oxidized, U6+ state, whereas in its reduced, U4+ state, uranium has been assumed to be immobile. Here, we present experimental evidence from high temperature (>100 °C) acidic brines that invalidates this assumption...
April 16, 2018: Nature Communications
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