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https://www.readbyqxmd.com/read/29773615/microbial-diversity-in-commercial-bee-pollen-from-europe-chile-and-mexico-based-on-16s-rrna-gene-amplicon-metagenome-sequencing
#1
Vicente D Moreno Andrade, Carlos Saldaña Gutiérrez, Rosa P Calvillo Medina, Andrés Cruz Hérnandez, Moisés A Vázquez Cruz, Alfonso Torres Ruíz, Sergio Romero Gómez, Miguel A Ramos López, Erika Álvarez-Hidalgo, Silvia B López-Gaytan, Natanahel Salvador Ramírez, George H Jones, Jose Luis Hernandez-Flores, Juan Campos-Guillén
Bee pollen is a highly nutritive natural foodstuff. Because of its use as a comestible, the association of bacteria with bee pollen is commercially and biologically important. We report here the bacterial diversity of seven bee pollen samples (five from Europe, one from Chile, and one from Mexico) based on 16S rRNA gene amplicon metagenome sequencing.
May 17, 2018: Genome Announcements
https://www.readbyqxmd.com/read/29773419/a-changing-etiologic-scenario-in-liver-transplantation-for-hepatocellular-carcinoma-in-a-multicenter-cohort-study-from-latin-america
#2
Federico Piñero, Paulo Costa, Yuri Longatto Boteon, Sergio Hoyos Duque, Sebastian Marciano, Margarita Anders, Adriana Varón, Alina Zerega, Jaime Poniachik, Alejandro Soza, Martín Padilla Machaca, Josemaría Menéndez, Rodrigo Zapata, Mario Vilatoba, Linda Muñoz, Martín Maraschio, Luis G Podestá, Lucas McCormack, Adrian Gadano, Ilka S F Fatima Boin, Parente García, Marcelo Silva
BACKGROUND AND AIM: Non-alcoholic fatty liver disease (NAFLD) is an increasing cause of hepatocellular carcinoma (HCC) and liver transplantation (LT). Our study focused on changing trends of liver related HCC etiologies during the last years in Latin America. METHODS: From a cohort of 2761 consecutive adult LT patients between 2005 and 2012 in 17 different centers, 435 with HCC were included. Different periods including years 2005-2006, 2007-2008, 2009-2010 and 2011-2012 were considered...
May 14, 2018: Clinics and Research in Hepatology and Gastroenterology
https://www.readbyqxmd.com/read/29771992/first-description-of-echinococcus-ortleppi-and-cystic-echinococcosis-infection-status-in-chile
#3
Felipe Corrêa, Caroll Stoore, Pamina Horlacher, Mauricio Jiménez, Christian Hidalgo, Cristian A Alvarez Rojas, Guilherme Figueiredo Barros, Henrique Bunselmeyer Ferreira, Marcela Hernández, Gonzalo Cabrera, Rodolfo Paredes
Cystic echinococcosis (CE), a parasitic disease caused by the cestode Echinococcus granulosus sensu lato (s.l.), is a worldwide zoonotic infection. Although endemic in Chile, information on the molecular characteristics of CE in livestock remains scarce. Therefore we aimed to describe the status of infection with E. granulosus s.l. in cattle from central Chile and also to contribute to the study of the molecular epidemiology of this parasite. According to our results, the prevalence of CE is 18.84% in cattle, similar to previous reports from Chile, suggesting that the prevalence in Santiago Metropolitan area has not changed in the last 30 years...
2018: PloS One
https://www.readbyqxmd.com/read/29770862/is-latin-america-ready-to-identify-anaplastic-large-cell-lymphoma-in-breast-implants-patients-regional-encounter-during-the-national-plastic-surgery-meeting-in-cancun-mexico
#4
EDITORIAL
Guillermo Ramos-Gallardo, Jesus Cuenca-Pardo, Lazaro Cardenas-Camarena, Hector Duran-Vega, Eugenio Rodríguez-Olivares, Jorge Enrique Bayter-Marin, Gerardo Levelier De Doig Alvear, Guillermo Vazquez, Montserrat Fontbona-Torres, Ricardo Galán-Suárez, Gabriela Guzman-Stein, Sergio Guzmán-Padilla, Guillermo Echeverría-Roldán, Jose Fernando Silva-Gavarrete, Alfonso Vallarta-Rodríguez, Livia Contreras-Bulnes, Carlos Guillemro Oaxaca-Escobar, Isabel Caravantes-Cortes, María Eugenia Flores, Jorge Cowes-McGowen, María Liz Maciel-Sosa, Ricardo Delgado-Binasco, Linda Rincón-Rubio
INTRODUCTION: Anaplastic large cell lymphoma associated with breast implants is receiving increased attention. Most cases have been reported in Europe, North America (USA and Canada), Australia and New Zealand. Fewer cases have been reported in Latin America (including Mexico), Africa and Asia. METHODS: This report was delivered during our national plastic surgery meeting in Cancun in May 2017. Before the meeting, two participants reviewed the literature. The review was performed using the following information sources: PubMed, Embase, Cochrane, Fisterra, Google Scholar and LILACS, with entries from 1980 to August 2015 in several languages (English, Spanish, French and Portuguese)...
May 16, 2018: Aesthetic Plastic Surgery
https://www.readbyqxmd.com/read/29769358/resolving-the-phylogenetic-position-of-darwin-s-extinct-ground-sloth-mylodon-darwinii-using-mitogenomic-and-nuclear-exon-data
#5
Frédéric Delsuc, Melanie Kuch, Gillian C Gibb, Jonathan Hughes, Paul Szpak, John Southon, Jacob Enk, Ana T Duggan, Hendrik N Poinar
Mylodon darwinii is the extinct giant ground sloth named after Charles Darwin, who first collected its remains in South America. We have successfully obtained a high-quality mitochondrial genome at 99-fold coverage using an Illumina shotgun sequencing of a 12 880-year-old bone fragment from Mylodon Cave in Chile. Low level of DNA damage showed that this sample was exceptionally well preserved for an ancient subfossil, probably the result of the dry and cold conditions prevailing within the cave. Accordingly, taxonomic assessment of our shotgun metagenomic data showed a very high percentage of endogenous DNA with 22% of the assembled metagenomic contigs assigned to Xenarthra...
May 16, 2018: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/29767916/in-depth-knowledge-of-the-role-of-the-clinical-mentor
#6
Claudia Soto Núñez, Lissette Avilés Reinoso, Camila Lucchini Raies, Paz Soto Fuentes
OBJECTIVES: This work sought to unveil the meaning expressed by clinical nurses by being mentors for students from the nursing internship level. METHODS: Phenomenological research. In-depth interviews were conducted with nine clinical nurses from a hospital in Santiago de Chile, who participate as mentors of nursing students in their last stage of university formation. RESULTS: Four comprehensive categories were obtained with their respective units of meaning by nursing: 1) vocation and gratification, 2) personal and professional challenge, 3) big responsibility, and 4) transmission of experience...
October 2017: Investigación y Educación en Enfermería
https://www.readbyqxmd.com/read/29767772/illicit-cigarette-trade-in-five-south-american-countries-a-gap-analysis-for-argentina-brazil-chile-colombia-and-peru
#7
Guillermo Paraje
Introduction: Due to its nature, it is very hard to measure tobacco illicit trade in any product. In the case of Latin American countries, there is scant information on the magnitude and characteristics of this trade in the case of cigarettes. The goal of this article is to provide estimates on the evolution of the illicit cigarette trade in five South American countries: Argentina, Brazil, Chile, Colombia and Peru. Methods: Gap analysis estimates for cigarette tax evasion/avoidance (a comparison on the evolution of the difference between registered cigarette sales and measured population consumption) is developed for Argentina, Brazil, Chile, Colombia and Peru...
May 15, 2018: Nicotine & Tobacco Research: Official Journal of the Society for Research on Nicotine and Tobacco
https://www.readbyqxmd.com/read/29767667/cytotaxonomic-study-of-the-chilean-endemic-complex-alstroemeria-magnifica-herb-alstroemeriaceae
#8
Carlos M Baeza, Víctor Finot, Eduardo Ruiz, Pedro Carrasco, Patricio Novoa, Marcelo Rosas, Oscar Toro-Núñez
Alstroemeria L. (Alstroemeriaceae) represents one of the most diverse genera of vascular plants in Chile. It contains approximately 54 taxa, 40 of which are endemic. The "complex" Alstroemeria magnifica is endemic to Chile, and it comprises four varieties: A. magnifica var. magenta, A. magnifica var. magnifica, A. magnifica var. sierrae, and A. magnifica var. tofoensis. It is distributed from Coquimbo to the Valparaíso Region. We analyzed karyotypes of 10 populations along its natural distribution...
May 14, 2018: Genetics and Molecular Biology
https://www.readbyqxmd.com/read/29761046/low-bacterial-community-diversity-in-two-introduced-aphid-pests-revealed-with-16s-rrna-amplicon-sequencing
#9
Francisca Zepeda-Paulo, Sebastían Ortiz-Martínez, Andrea X Silva, Blas Lavandero
Bacterial endosymbionts that produce important phenotypic effects on their hosts are common among plant sap-sucking insects. Aphids have become a model system of insect-symbiont interactions. However, endosymbiont research has focused on a few aphid species, making it necessary to make greater efforts to other aphid species through different regions, in order to have a better understanding of the role of endosymbionts in aphids as a group. Aphid endosymbionts have frequently been studied by PCR-based techniques, using species-specific primers, nevertheless this approach may omit other non-target bacteria cohabiting a particular host species...
2018: PeerJ
https://www.readbyqxmd.com/read/29760767/survival-after-cancer-diagnosis-in-a-cohort-of-hiv-positive-individuals-in-latin-america
#10
Valeria I Fink, Cathy A Jenkins, Jessica L Castilho, Anna K Person, Bryan E Shepherd, Beatriz Grinsztejn, Juliana Netto, Brenda Crabtree-Ramirez, Claudia P Cortés, Denis Padgett, Karu Jayathilake, Catherine McGowan, Pedro Cahn
Background: This study aimed to evaluate trends and predictors of survival after cancer diagnosis in persons living with HIV in the Caribbean, Central, and South America network for HIV epidemiology cohort. Methods: Demographic, cancer, and HIV-related data from HIV-positive adults diagnosed with cancer ≤ 1 year before or any time after HIV diagnosis from January 1, 2000-June 30, 2015 were retrospectively collected. Cancer cases were classified as AIDS-defining cancers (ADC) and non-AIDS-defining cancers (NADC)...
2018: Infectious Agents and Cancer
https://www.readbyqxmd.com/read/29757440/occupational-dose-during-adult-interventional-cardiology-first-values-with-personal-active-dosimeters-in-chile
#11
Carlos Ubeda, Claudio Morales, Diego Gutiérrez, Marcus Oliveira, Carlos Manterola
The objective of this article is to present initial occupational dose values using digital active personal dosimeters for medical staff during adult interventional cardiology procedures in a public hospital in Chile. Personal dose equivalent Hp(10) over the lead apron of physician, nurse and radiographer were measured during 59 procedures. Mean values of occupational dose Hp(10) per procedure were 47.6, 6.2 and 4.3 μSv for physician, nurse and radiographer, respectively. If no protective tools are used, physician dose can exceed the new eye lens dose limit...
May 11, 2018: Radiation Protection Dosimetry
https://www.readbyqxmd.com/read/29756975/-risk-factors-associated-with-type-2-diabetes-in-chile
#12
Ana María Leiva, María Adela Martínez, Fanny Petermann, Alex Garrido-Méndez, Felipe Poblete-Valderrama, Ximena Díaz-Martínez, Carlos Celis-Morales
BACKGROUND: worldwide, prevalence of type 2 diabetes has doubled in the last years, mainly due to unhealthy lifestyle behaviours. They are many risk factors associated with diabetes, however, which factors are associated with diabetes in the Chilean population remains unknown. Therefore, the aim was to determine what risk factors are associated with the development of diabetes in Chile. METHODS: four thousand and seven hundred participants from the cross-sectional 2009-2010 National Health Survey were included in this study (4,162 normal; 538 diabetics)...
March 1, 2018: Nutrición Hospitalaria: Organo Oficial de la Sociedad Española de Nutrición Parenteral y Enteral
https://www.readbyqxmd.com/read/29754216/the-patient-s-safety-and-access-to-experimental-drugs-after-the-termination-of-clinical-trials-regulations-and-trends
#13
Ricardo Eccard da Silva, Angélica Amorim Amato, Thiago do Rego Sousa, Marta Rodrigues de Carvalho, Maria Rita Carvalho Garbi Novaes
PURPOSE: Participants' rights and safety must be guaranteed not only while a clinical trial is being conducted but also when a clinical trial finishes. The criteria for post-trial access to experimental drugs, however, are unclear in various countries. The objectives of this study were (i) to ascertain if there were regulations or guidelines related to patients' access to drugs after the end of clinical trials in the countries selected in the study and (ii) to analyze trends in post-trial access in countries classified by their level of economic development...
May 12, 2018: European Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/29750186/global-variations-of-large-megathrust-earthquake-rupture-characteristics
#14
Lingling Ye, Hiroo Kanamori, Thorne Lay
Despite the surge of great earthquakes along subduction zones over the last decade and advances in observations and analysis techniques, it remains unclear whether earthquake complexity is primarily controlled by persistent fault properties or by dynamics of the failure process. We introduce the radiated energy enhancement factor (REEF), given by the ratio of an event's directly measured radiated energy to the calculated minimum radiated energy for a source with the same seismic moment and duration, to quantify the rupture complexity...
March 2018: Science Advances
https://www.readbyqxmd.com/read/29748902/a-thiotrophic-microbial-community-in-an-acidic-brine-lake-in-northern-chile
#15
Lorena Escudero, Nia Oetiker, Karem Gallardo, Cinthya Tebes-Cayo, Mariela Guajardo, Claudia Nuñez, Carol Davis-Belmar, J J Pueyo, Guillermo Chong Díaz, Cecilia Demergasso
The endorheic basins of the Northern Chilean Altiplano contain saline lakes and salt flats. Two of the salt flats, Gorbea and Ignorado, have high acidic brines. The causes of the local acidity have been attributed to the occurrence of volcanic native sulfur, the release of sulfuric acid by oxidation, and the low buffering capacity of the rocks in the area. Understanding the microbial community composition and available energy in this pristine ecosystem is relevant in determining the origin of the acidity and in supporting the rationale of conservation policies...
May 10, 2018: Antonie Van Leeuwenhoek
https://www.readbyqxmd.com/read/29746871/discrete-typing-units-of-trypanosoma-cruzi-detected-by-real-time-pcr-in-chilean-patients-with-chronic-chagas-cardiomyopathy
#16
Catalina Muñoz-San Martín, Inés Zulantay, Miguel Saavedra, Cristián Fuentealba, Gabriela Muñoz, Werner Apt
Chagas disease is a major public health problem in Latin America and has spread to other countries due to immigration of infected persons. 10-30% of patients with chronic Chagas disease will develop cardiomyopathy. Chagas cardiomyopathy is the worst form of the disease, due to its high morbidity and mortality. Because of its prognostic value and adequate medical monitoring, it is very important to identify infected people who could develop Chagas cardiomyopathy. The aim of this study was to determine if discrete typing units (DTUs) of Trypanosoma cruzi are related to the presence of heart disease in patients with chronic Chagas disease...
May 7, 2018: Acta Tropica
https://www.readbyqxmd.com/read/29744693/microbial-community-composition-and-trophic-role-along-a-marked-salinity-gradient-in-laguna-puilar-salar-de-atacama-chile
#17
Cristina Dorador, Patrick Fink, Martha Hengst, Gonzalo Icaza, Alvaro S Villalobos, Drina Vejar, Daniela Meneses, Vinko Zadjelovic, Lisa Burmann, Jana Moelzner, Chris Harrod
The geological, hydrological and microbiological features of the Salar de Atacama, the most extensive evaporitic sedimentary basin in the Atacama Desert of northern Chile, have been extensively studied. In contrast, relatively little attention has been paid to the composition and roles of microbial communities in hypersaline lakes which are a unique feature in the Salar. In the present study biochemical, chemical and molecular biological tools were used to determine the composition and roles of microbial communities in water, microbial mats and sediments along a marked salinity gradient in Laguna Puilar which is located in the "Los Flamencos" National Reserve...
May 9, 2018: Antonie Van Leeuwenhoek
https://www.readbyqxmd.com/read/29741769/contrasting-seasonal-and-aseasonal-environments-across-stages-of-the-annual-cycle-in-the-rufous-collared-sparrow-zonotrichia-capensis-differences-in-endocrine-function-proteome-and-body-condition
#18
Paulina L González-Gómez, Valentina Echeverria, Cristian F Estades, Jonathan H Perez, Jesse S Krause, Pablo Sabat, Jonathon Li, Dietmar Kültz, John C Wingfield
1.The timing and duration of life history stages (LHS) within the annual cycle can be affected by local environmental cues which are integrated through endocrine signaling mechanisms and changes in protein function. Most animals express a single LHS within a given period of the year because synchronous expression of LHSs is thought to be too costly energetically. However, in very rare and extremely stable conditions, breeding and molt have been observed to overlap extensively in Rufous-collared sparrows (Zonotrichia capensis) living in valleys of the Atacama Desert - one of the most stable and aseasonal environments on Earth...
May 9, 2018: Journal of Animal Ecology
https://www.readbyqxmd.com/read/29741110/vaginal-health-insights-views-attitudes-viva-latam-results-from-a-survey-in-latin-america
#19
R E Nappi, N R de Melo, M Martino, C Celis-González, P Villaseca, S Röhrich, S Palacios
OBJECTIVE: To investigate awareness in Latin America, knowledge of postmenopausal vaginal atrophy was evaluated in a sample of women from this region. METHODS: A total of 2509 postmenopausal women aged 55-65 years, resident in Argentina, Brazil, Chile, Colombia and Mexico, completed a structured online questionnaire. RESULTS: Over half the surveyed population (57%) reported experiencing symptoms of vaginal atrophy. Only 6% of the overall cohort attributed symptoms of vaginal atrophy directly to the condition, and 71% did not consider the condition to be chronic, resulting in many women not accessing effective therapy...
May 9, 2018: Climacteric: the Journal of the International Menopause Society
https://www.readbyqxmd.com/read/29740705/hydrochemical-and-environmental-isotope-analysis-of-groundwater-and-surface-water-in-a-dry-mountain-region-in-northern-chile
#20
Carina Zang, Juliane Dame, Marcus Nüsser
This case study examines the geological imprint and land use practices on water quality in the arid Huasco Valley against the backdrop of ongoing water conflicts surrounding competing demands for agriculture and mining. The study is based on a detailed analysis of spatial and temporal variations of monthly surface and bi-monthly groundwater quality samples measured during the Chilean summer of 2015/16. Additional information on source regions and river-groundwater interactions were collected using stable water isotopes...
May 8, 2018: Environmental Monitoring and Assessment
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