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https://www.readbyqxmd.com/read/28742801/tracking-the-return-of-aedes-aegypti-to-brazil-the-major-vector-of-the-dengue-chikungunya-and-zika-viruses
#1
Panayiota Kotsakiozi, Andrea Gloria-Soria, Adalgisa Caccone, Benjamin Evans, Renata Schama, Ademir Jesus Martins, Jeffrey R Powell
BACKGROUND: Aedes aegypti, commonly known as "the yellow fever mosquito", is of great medical concern today primarily as the major vector of dengue, chikungunya and Zika viruses, although yellow fever remains a serious health concern in some regions. The history of Ae. aegypti in Brazil is of particular interest because the country was subjected to a well-documented eradication program during 1940s-1950s. After cessation of the campaign, the mosquito quickly re-established in the early 1970s with several dengue outbreaks reported during the last 30 years...
July 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28727841/river-specific-macrogenomic-diversity-in-simulium-guianense-s-l-diptera-simuliidae-a-complex-of-tropical-american-vectors-associated-with-human-onchocerciasis
#2
Peter H Adler, Neusa Hamada, Jeane Marcelle Cavalcante do Nascimento, Maria Eugenia Grillet
Simulium guianense Wise is a Latin American vector complex of black flies associated with transmission of the causal agent of human onchocerciasis (river blindness). An analysis of the chromosomal banding patterns of 607 larvae of S. guianense s. l. revealed a high level of variation involving 83 macrogenomic rearrangements across 25 populations in Brazil, French Guiana, and Venezuela. The 25 populations were assigned to 13 cytoforms (A1, A2, B1-B4, C, D, E1-E4, and F), some of which are probably valid species...
2017: PloS One
https://www.readbyqxmd.com/read/28717712/egfr-mutations-in-latinos-from-the-united-states-and-latin-america
#3
Ariel Lopez-Chavez, Anish Thomas, Moses O Evbuomwan, Liqiang Xi, Guinevere Chun, Tatiana Vidaurre, Oscar Arrieta, George Oblitas, Ana Belen Oton, Alejandro R Calvo, Arun Rajan, Mark Raffeld, Seth M Steinberg, Lorena Arze-Aimaretti, Giuseppe Giaccone
PURPOSE: Epidermal growth factor receptor (EGFR) mutations confer sensitivity to EGFR tyrosine kinase inhibitors in patients with advanced non-small-cell lung cancer (NSCLC). There are limited and conflicting reports on the frequency of EGFR mutations in Latinos. PATIENTS AND METHODS: Samples from 642 patients with NSCLC from seven institutions in the United States and Latin America were assessed for EGFR mutations (exons 18 to 21) at Clinical Laboratory Improvement Amendments-certified central laboratories...
October 2016: Journal of Global Oncology
https://www.readbyqxmd.com/read/28712937/returning-ex-patriot-chinese-to-guangdong-china-increase-the-risk-for-local-transmission-of-zika-virus
#4
Jiufeng Sun, De Wu, Haojie Zhong, Dawei Guan, Huan Zhang, Qiqi Tan, Huiqiong Zhou, Meng Zhang, Dan Ning, Baohuan Zhang, Changwen Ke, Tie Song, Jinyan Lin, Yonghui Zhang, Marion Koopmans, George F Gao
OBJECTIVES: Rapid transmission and linkage to microcephaly and Guillain-Barre syndrome have made Zika virus (ZIKV) infection become a serious threat to global public health. The epidemiology, virological characteristics and genetic evolution of introduced ZIKV to Guangdong, China, were investigated. METHODS: Analyses of the epidemiological characteristics and genetic diversity of ZIKV isolates were performed. RESULTS: Nineteen confirmed ZIKV infection cases were imported from Venezuela and Samoa...
July 14, 2017: Journal of Infection
https://www.readbyqxmd.com/read/28704073/transformative-possibilities-politics-and-cosmetic-surgery-in-the-bolivarian-revolution
#5
Lauren E Gulbas
I examine the intersection of politics and aesthetics in a public hospital in Caracas, Venezuela in the first years of the twenty-first century. Given Venezuela's longstanding embrace of physical enhancement and the contradictions of the medical values of cosmetic surgery with those of Bolivarian socialism, the changing surgical practices at a well-established public site offer a significant case for considering how different actors negotiate the dialectics of care. In the face of increasing resource shortages, negotiations of aesthetic care contributed to tensions in the clinical encounter as patients creatively pushed Bolivarian policies to support their pursuits of aesthetic self-improvement...
July 13, 2017: Medical Anthropology
https://www.readbyqxmd.com/read/28702006/the-conserved-actinobacterial-two-component-system-mtrab-coordinates-chloramphenicol-production-with-sporulation-in-streptomyces-venezuelae-nrrl-b-65442
#6
Nicolle F Som, Daniel Heine, Neil A Holmes, John T Munnoch, Govind Chandra, Ryan F Seipke, Paul A Hoskisson, Barrie Wilkinson, Matthew I Hutchings
Streptomyces bacteria make numerous secondary metabolites, including half of all known antibiotics. Production of antibiotics is usually coordinated with the onset of sporulation but the cross regulation of these processes is not fully understood. This is important because most Streptomyces antibiotics are produced at low levels or not at all under laboratory conditions and this makes large scale production of these compounds very challenging. Here, we characterize the highly conserved actinobacterial two-component system MtrAB in the model organism Streptomyces venezuelae and provide evidence that it coordinates production of the antibiotic chloramphenicol with sporulation...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28699154/-venezuelan-consensus-guidelines-on-the-use-of-magnetic-resonance-in-diagnosis-and-follow-up-of-patients-with-multiple-sclerosis
#7
B Lander, M Alvarado, I C Alvarez, E Armas, G Chique-Alfonzo, F Hernandez, R Labarca, R Leon, O Molina, I Monasterios, C I Ramirez, E Rubio, B Torres, R Viso-Barroso, Z Simmonds, A Soto
INTRODUCTION: The clinical use of magnetic resonance (MR) in patients with multiple sclerosis (MS) has advanced markedly over the past few years. Several groups around the world have developed consensus guidelines about the role of MR in MS at diagnosis and during follow up. However, in some regions is difficult to extrapolate the recommendations. AIM: To provide recommendations for the implementation of MR in MS patients at diagnosis and follow up in Venezuela...
August 1, 2017: Revista de Neurologia
https://www.readbyqxmd.com/read/28699095/maternal-education-gradients-in-infant-health-in-four-south-american-countries
#8
George L Wehby, Jorge S López-Camelo
Objective We investigate gradients (i.e. differences) in infant health outcomes by maternal education in Argentina, Brazil, Chile, and Venezuela and explore channels related to father's education, household labor outcomes, and maternal health, fertility, and use of prenatal services and technology. Methods We employ secondary interview and birth record data similarly collected across a network of birth hospitals from the early 1980s through 2011 within the Latin American Collaborative Study of Congenital Anomalies (ECLAMC)...
July 11, 2017: Maternal and Child Health Journal
https://www.readbyqxmd.com/read/28695193/testing-for-voter-rigging-in-small-polling-stations
#9
Raúl Jimenez, Manuel Hidalgo, Peter Klimek
Nowadays, a large number of countries combine formal democratic institutions with authoritarian practices. Although in these countries the ruling elites may receive considerable voter support, they often use several manipulation tools to control election outcomes. A common practice of these regimes is the coercion and mobilization of large numbers of voters. This electoral irregularity is known as voter rigging, distinguishing it from vote rigging, which involves ballot stuffing or stealing. We develop a statistical test to quantify the extent to which the results of a particular election display traces of voter rigging...
June 2017: Science Advances
https://www.readbyqxmd.com/read/28690146/asian-genotype-of-chikungunya-virus-circulating-in-venezuela-during-2014
#10
Daría Camacho, Jesús Reyes, Ana Negredo, Lourdes Hernández, María Sánchez-Seco, Guillermo Comach
Chikungunya virus emerged on Saint-Martin Island in the Caribbean in late 2013. Since then in July of 2104 Venezuela reported autochthonous cases. This study reports the first phylogenetic characterization of CHIKV autochthonous cases in Venezuela, 2014. The phylogenetic analysis showed that the CHIKV circulating in Venezuela (Aragua state) belong to the Asian genotype (Caribbean clade) and it is related to viruses that circulated in the same year in the Caribbean.
July 6, 2017: Acta Tropica
https://www.readbyqxmd.com/read/28682071/comprehensive-chemical-fingerprinting-of-high-quality-cocoa-at-early-stages-of-processing-effectiveness-of-combined-untargeted-and-targeted-approaches-for-classification-and-discrimination
#11
Federico Magagna, Alessandro Guglielmetti, Erica Liberto, Stephen E Reichenbach, Elena Allegrucci, Guido Gobino, Carlo Bicchi, Chiara Cordero
This study investigates chemical information of volatile fractions of high-quality cocoa (Theobroma cacao L. Malvaceae) from different origins (Mexico, Ecuador, Venezuela, Columbia, Java, Trinidad, and Sao Tomè) produced for fine chocolate. This study explores the evolution of the entire pattern of volatiles in relation to cocoa processing (raw, roasted, steamed, and ground beans). Advanced chemical fingerprinting (e.g., combined untargeted and targeted fingerprinting) with comprehensive two-dimensional gas chromatography coupled with mass spectrometry allows advanced pattern recognition for classification, discrimination, and sensory-quality characterization...
July 18, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28676055/malaria-in-brazil-colombia-peru-and-venezuela-current-challenges-in-malaria-control-and-elimination
#12
REVIEW
Judith Recht, André M Siqueira, Wuelton M Monteiro, Sonia M Herrera, Sócrates Herrera, Marcus V G Lacerda
In spite of significant progress towards malaria control and elimination achieved in South America in the 2000s, this mosquito-transmitted tropical disease remains an important public health concern in the region. Most malaria cases in South America come from Amazon rain forest areas in northern countries, where more than half of malaria is caused by Plasmodium vivax, while Plasmodium falciparum malaria incidence has decreased in recent years. This review discusses current malaria data, policies and challenges in four South American Amazon countries: Brazil, Colombia, Peru and the Bolivarian Republic of Venezuela...
July 4, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28662038/venezuela-and-its-rising-vector-borne-neglected-diseases
#13
EDITORIAL
Peter J Hotez, María-Gloria Basáñez, Alvaro Acosta-Serrano, Maria Eugenia Grillet
No abstract text is available yet for this article.
June 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28659882/dendritic-cells-primed-with-paracoccidioides-brasiliensis-peptide-p10-are-therapeutic-in-immunosuppressed-mice-with-paracoccidioidomycosis
#14
Leandro B R Silva, Lucas S Dias, Glauce M G Rittner, Julián E Muñoz, Ana C O Souza, Joshua D Nosanchuk, Luiz R Travassos, Carlos P Taborda
Paracoccidioidomycosis (PCM) is an endemic systemic mycosis in Latin America, with the highest prevalence in Brazil, Colombia, and Venezuela. Fungi of the Paracoccidioides genus are etiologic agents of the disease. The 15 amino acid peptide P10 is derived from gp43, the main diagnostic antigen of Paracoccidioides brasiliensis. We previously reported that P10-pulsed dendritic cells (DCs) induce a protective response against P. brasiliensis. Presently, dexamethasone-treated BALB/c mice were intratracheally infected with P...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28658456/-tobacco-advertisement-exposure-and-tobacco-consumption-among-youths-in-south-america
#15
Geneviève Plamondon, G Emmanuel Guindon, Guillermo Paraje
Objective: To assesses the statistical association between exposure to tobacco marketing and tobacco consumption among adolescents in South America, by using data from the Global Youth Tobacco Survey. Materials and methods: Using data from the Global Youth Tobacco Survey (GYTS), the exposure to tobacco marketing at the school level was studied from advertising in TV, radio, massive public events and street advertisement. Tobacco behaviour was considered. The total pooled sample used was 134 073 youths from Argentina, Bolivia, Chile, Peru, Brazil, Uruguay, Suriname, Colombia, Guyana, Ecuador, Paraguay and Venezuela...
2017: Salud Pública de México
https://www.readbyqxmd.com/read/28654685/spatial-variability-of-spanish-sardine-sardinella-aurita-abundance-as-related-to-the-upwelling-cycle-off-the-southeastern-caribbean-sea
#16
Digna Rueda-Roa, Jeremy Mendoza, Frank Muller-Karger, Juan José Cárdenas, Alina Achury, Yrene Astor
The Sardinella aurita fishery off northeastern Venezuela, region of seasonal wind-driven coastal-upwelling, accounts for 90% of the Caribbean Sea small pelagic catch. This law-protected artisanal fishery takes place up to ~10 km offshore. The spatial distribution, number of schools, and biomass of S. aurita were studied using eight hydro-acoustic surveys (1995-1998). The study included the analysis of satellite-derived sea surface temperature and chlorophyll-a. Surveys were grouped by strong, weak, and transitional upwelling seasons...
2017: PloS One
https://www.readbyqxmd.com/read/28653803/mitochondrial-dna-haplogroup-variation-of-contemporary-mixed-south-americans-reveals-prehistoric-displacements-linked-to-archaeologically-derived-culture-history
#17
Francisco Rothhammer, Lars Fehren-Schmitz, Giannina Puddu, José Capriles
OBJECTIVE: The purpose of this study was to examine South American population structure and prehistoric population displacements prior to the Spanish conquest, utilizing mitochondrial DNA haplogroups of extant mixed populations from Mexico, Costa Rica, Venezuela, Colombia, Ecuador, Peru, Bolivia, Brazil, Argentina, and Chile. METHOD: Relative frequencies of four pan-American haplogroups, obtained from published databases, were analyzed to evaluate patterns of variations, population structure and possible prehistoric migration pathways...
June 27, 2017: American Journal of Human Biology: the Official Journal of the Human Biology Council
https://www.readbyqxmd.com/read/28643672/switch-from-agalsidase-beta-to-agalsidase-alfa-in-the-enzyme-replacement-therapy-of-patients-with-fabry-disease-in-latin-america
#18
Diego Ripeau, Hernán Amartino, Martín Cedrolla, Luis Urtiaga, Bella Urdaneta, Marilis Cano, Rita Valdez, Norberto Antongiovanni, Francisca Masllorens
There are currently two available enzyme replacement therapies for Fabry disease and little information regarding efficacy and safety of switching therapies. Between 2009 and 2012 there was a worldwide shortage of agalsidase beta and patients on that enzyme were switched to agalsidase alfa. This retrospective observational study assessed a 2-year period of efficacy and safety in a population of Fabry patients, in Argentina (30 patients) and Venezuela (3 patients), who switched therapies from algasidase beta to agalsidase alfa...
2017: Medicina
https://www.readbyqxmd.com/read/28639222/molecular-and-biological-characterization-of-a-new-tomato-mild-yellow-leaf-curl-aragua-virus-strain-producing-severe-symptoms-in-tomato
#19
Gustavo Romay, Dorys T Chirinos, Francis Geraud-Pouey, Annika Gillis, Jacques Mahillon, Cécile Desbiez, Claude Bragard
Tomato mild yellow leaf curl Aragua virus (ToMYLCV) is a begomovirus first reported infecting tomato (Solanum lycopersicum) and milkweed (Euphorbia heterophylla) in Venezuela. In this study, a ToMYLCV isolate (Zulia-219) was completely sequenced and its host range was evaluated. The DNA-A and DNA-B components of isolate Zulia-219 showed 93 and 85% nucleotide sequence identity with the respective counterparts of the ToMYLCV type strain. According to current demarcation criteria for begomovirus species, Zulia-219 is a new strain of ToMYLCV...
June 20, 2017: Virus Genes
https://www.readbyqxmd.com/read/28622943/cardiac-rehabilitation-costs
#20
Mahshid Moghei, Karam Turk-Adawi, Wanrudee Isaranuwatchai, Nizal Sarrafzadegan, Paul Oh, Caroline Chessex, Sherry L Grace
BACKGROUND: Despite the clinical benefits of cardiac rehabilitation (CR) and its cost-effectiveness, it is not widely received. Arguably, capacity could be greatly increased if lower-cost models were implemented. The aims of this review were to describe: the costs associated with CR delivery, approaches to reduce these costs, and associated implications. METHODS: Upon finalizing the PICO statement, information scientists were enlisted to develop the search strategy of MEDLINE, Embase, CDSR, Google Scholar and Scopus...
June 10, 2017: International Journal of Cardiology
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