Read by QxMD icon Read


Luisa Z Moreno, Fabiana Miraglia, Ana P Loureiro, Frederico S Kremer, Marcus R Eslabao, Odir A Dellagostin, Walter Lilenbaum, Silvio A Vasconcellos, Marcos B Heinemann, Andrea M Moreno
Leptospira inadai is classified as a species of the Leptospira intermediate group that has been poorly studied due to its apparent insignificance to human and animal health. Nevertheless, over the last two decades the species has been described in human cases in India and in carrier animals in Ecuador. Here, we present the first identification and genomic characterisation of L. inadai serogroup Lyme isolated from captured rodent in Brazil. Even though the M34/99 strain was not pathogenic for hamsters, it was able to establish renal colonisation...
March 12, 2018: Memórias do Instituto Oswaldo Cruz
Sadie J Ryan, Anna M Stewart-Ibarra, Eunice Ordóñez-Enireb, Winnie Chu, Julia L Finkelstein, Christine A King, Luis E Escobar, Christina Lupone, Froilan Heras, Erica Tauzer, Egan Waggoner, Tyler G James, Washington B Cárdenas, Mark Polhemus
Cholera emergence is strongly linked to local environmental and ecological context. The 1991-2004 pandemic emerged in Perú and spread north into Ecuador's El Oro province, making this a key site for potential re-emergence. Machala, El Oro, is a port city of 250,000 inhabitants, near the Peruvian border. Many livelihoods depend on the estuarine system, from fishing for subsistence and trade, to domestic water use. In 2014, we conducted biweekly sampling for 10 months in five estuarine locations, across a gradient of human use, and ranging from inland to ocean...
March 10, 2018: International Journal of Environmental Research and Public Health
O Fernández-Concepción, M López Jiménez, C Valencia-Calderón, A Calderón-Valdivieso, A Recasén-Linares, L Reyes-Haro, C Vásquez-Ham
INTRODUCTION: There is sufficient evidence on the usefulness of surgery as a therapeutic alternative for patients with drug-resistant epilepsy; however this treatment is underutilized, especially in developing countries. METHODS: We describe the outcomes of epilepsy surgery in 27 paediatric patients at Hospital Baca Ortiz in Quito, Ecuador. Our analysis considered the following variables: reduction in seizure frequency, surgery outcome according to the Engel classification, improvement in quality of life, and serious complications due to surgery...
March 7, 2018: Neurología: Publicación Oficial de la Sociedad Española de Neurología
Birthe Thormann, Dirk Ahrens, Carlos Iván Espinosa, Diego Marín Armijos, Thomas Wagner, Johann W Wägele, Marcell K Peters
Elevational diversity gradients are typically studied without considering the complex small-scale topography of large mountains, which generates habitats of strongly different environmental conditions within the same elevational zones. Here we analyzed the importance of small-scale topography for elevational diversity patterns of hyperdiverse tropical leaf beetles (Coleoptera: Chrysomelidae). We compared patterns of elevational diversity and species composition of beetles in two types of forests (on mountain ridges and in valleys) and analyzed whether differences in the rate of species turnover among forest habitats lead to shifts in patterns of elevational diversity when scaling up from the local study site to the elevational belt level...
March 9, 2018: Oecologia
David A Prieto-Torres, Andrés M Cuervo, Elisa Bonaccorso
We studied the phylogeography and plumage variation of the Russet-crowned Warbler (Myiothlypis coronata), from Venezuela to Bolivia, with focus on populations from Ecuador and northern Peru. We analyzed sequences of mitochondrial and nuclear genes, geographic distributions, as well as photographs of specimens deposited at museum collections. Phylogenetic analyses identified three major lineages formed by populations from: Venezuela and Colombia (M. c. regulus), Ecuador and northern Peru (M. elata, M. castaneiceps, M...
2018: PloS One
Encarni Montoya, Hayley F Keen, Carmen X Luzuriaga, William D Gosling
Tropical ecosystems play a key role in many aspects of Earth system dynamics currently of global concern, including carbon sequestration and biodiversity. To accurately understand complex tropical systems it is necessary to parameterise key ecological aspects, such as rates of change (RoC), species turnover, dynamism, resilience, or stability. To obtain a long-term (>50 years) perspective on these ecological aspects we must turn to the fossil record. However, compared to temperate zones, collecting continuous sedimentary archives in the lowland tropics is often difficult due to the active landscape processes, with potentially frequent volcanic, tectonic, and/or fluvial events confounding sediment deposition, preservation, and recovery...
2018: Frontiers in Plant Science
Andrés J Cortés, Matthew W Blair
Drought will reduce global crop production by >10% in 2050 substantially worsening global malnutrition. Breeding for resistance to drought will require accessing crop genetic diversity found in the wild accessions from the driest high stress ecosystems. Genome-environment associations (GEA) in crop wild relatives reveal natural adaptation, and therefore can be used to identify adaptive variation. We explored this approach in the food crop Phaseolus vulgaris L., characterizing 86 geo-referenced wild accessions using genotyping by sequencing (GBS) to discover single nucleotide polymorphisms (SNPs)...
2018: Frontiers in Plant Science
Anna M Stewart-Ibarra, Sadie J Ryan, Aileen Kenneson, Christine A King, Mark Abbott, Arturo Barbachano-Guerrero, Efraín Beltrán-Ayala, Mercy J Borbor-Cordova, Washington B Cárdenas, Cinthya Cueva, Julia L Finkelstein, Christina D Lupone, Richard G Jarman, Irina Maljkovic Berry, Saurabh Mehta, Mark Polhemus, Mercy Silva, Timothy P Endy
Here, we report the findings from the first 2 years of an arbovirus surveillance study conducted in Machala, Ecuador, a dengue-endemic region (2014-2015). Patients with suspected dengue virus (DENV) infections (index cases, N = 324) were referred from five Ministry of Health clinical sites. A subset of DENV-positive index cases ( N = 44) were selected, and individuals from the index household and four neighboring homes within 200 m were recruited ( N = 400). Individuals who entered the study, other than the index cases, are referred to as associates...
March 5, 2018: American Journal of Tropical Medicine and Hygiene
Kara A Moser, Lixin Zhang, Ian Spicknall, Nikolay P Braykov, Karen Levy, Carl F Marrs, Betsy Foxman, Gabriel Trueba, William Cevallos, Jason Goldstick, James Trostle, Joseph N S Eisenberg
Small-scale production poultry operations are increasingly common worldwide. To investigate how these operations influence antimicrobial resistance and mobile genetic elements (MGEs), Escherichia coli isolates were sampled from small-scale production birds (raised in confined spaces with antibiotics in feed), household birds (no movement constraints; fed on scraps), and humans associated with these birds in rural Ecuador (2010-2012). Isolates were screened for genes associated with MGEs as well as phenotypic resistance to 12 antibiotics...
March 1, 2018: American Journal of Epidemiology
P W Crous, M J Wingfield, T I Burgess, A J Carnegie, G E St J Hardy, D Smith, B A Summerell, J F Cano-Lira, J Guarro, J Houbraken, L Lombard, M P Martín, M Sandoval-Denis, A V Alexandrova, C W Barnes, I G Baseia, J D P Bezerra, V Guarnaccia, T W May, M Hernández-Restrepo, A M Stchigel, A N Miller, M E Ordoñez, V P Abreu, T Accioly, C Agnello, A Agustin Colmán, C C Albuquerque, D S Alfredo, P Alvarado, G R Araújo-Magalhães, S Arauzo, T Atkinson, A Barili, R W Barreto, J L Bezerra, T S Cabral, F Camello Rodríguez, R H S F Cruz, P P Daniëls, B D B da Silva, D A C de Almeida, A A de Carvalho Júnior, C A Decock, L Delgat, S Denman, R A Dimitrov, J Edwards, A G Fedosova, R J Ferreira, A L Firmino, J A Flores, D García, J Gené, A Giraldo, J S Góis, A A M Gomes, C M Gonçalves, D E Gouliamova, M Groenewald, B V Guéorguiev, M Guevara-Suarez, L F P Gusmão, K Hosaka, V Hubka, S M Huhndorf, M Jadan, Ž Jurjević, B Kraak, V Kučera, T K A Kumar, I Kušan, S R Lacerda, S Lamlertthon, W S Lisboa, M Loizides, J J Luangsa-Ard, P Lysková, W P Mac Cormack, D M Macedo, A R Machado, E F Malysheva, P Marinho, N Matočec, M Meijer, A Mešić, S Mongkolsamrit, K A Moreira, O V Morozova, K U Nair, N Nakamura, W Noisripoom, I Olariaga, R J V Oliveira, L M Paiva, P Pawar, O L Pereira, S W Peterson, M Prieto, E Rodríguez-Andrade, C Rojo De Blas, M Roy, E S Santos, R Sharma, G A Silva, C M Souza-Motta, Y Takeuchi-Kaneko, C Tanaka, A Thakur, M Th Smith, Z Tkalčec, N Valenzuela-Lopez, P van der Kleij, A Verbeken, M G Viana, X W Wang, J Z Groenewald
Novel species of fungi described in this study include those from various countries as follows: Antarctica : Cadophora antarctica from soil. Australia : Alfaria dandenongensis on Cyperaceae , Amphosoma persooniae on Persoonia sp., Anungitea nullicana on Eucalyptus sp . , Bagadiella eucalypti on Eucalyptus globulus , Castanediella eucalyptigena on Eucalyptus sp., Cercospora dianellicola on Dianella sp., Cladoriella kinglakensis on Eucalyptus regnans , Cladoriella xanthorrhoeae (incl. Cladoriellaceae fam. nov...
December 2017: Persoonia
Bruce G Marshall, Marcello M Veiga, Robert J Kaplan, Rebecca Adler Miserendino, Gary Schudel, Bridget A Bergquist, Jean R D Guimarães, Luis G S Sobral, Carolina Gonzalez-Mueller
In Portovelo in southern Ecuador, 87 gold processing centers along the Puyango-Tumbes River produce an estimated 6 tonnes of gold per annum using a combination of mercury amalgamation and/or cyanidation and processing poly-metallic ores. We analysed total Hg, Hg isotopes, total arsenic, cadmium, copper, lead and zinc in water and sediment along the Puyango in 2012-2014. The highest total mercury (THg) concentrations in sediments were found within a 40 km stretch downriver from the processing plants, with levels varying between 0...
March 1, 2018: Environmental Science. Processes & Impacts
Ana María Salinas, Verónica Gabriela Osorio, Pablo Francisco Endara, Eduardo Ramiro Salazar, Gabriela Piedad Vasco, Sandra Guadalupe Vivero, Antonio Machado
Background: Bacterial vaginosis (BV) is a microbial imbalance (i.e., dysbiosis) that can produce serious medical effects in women at childbearing age. Little is known, however, about the incidence of BV or vaginal microbiota dysbiosis in pregnant teenagers in low and middle-income countries such as Ecuador. The scope of this exploratory analysis was to study the relationship between epidemiologic and microbial risk factors. Among the microbiology risk factors this study investigated five Lactobacillus species, two of them know in preview studies as microbiology risk factors for BV development ( Lactobacillus acidophilus and Lactobacillus iners ), and the last three known for being associated with a healthy vaginal tract ( Lactobacillus crispatus , Lactobacillus gasseri and Lactobacillus jensenii )...
2018: PeerJ
Galo Zapata-Ríos, Lyn C Branch
Although the Andes have long been occupied by people, habitat loss, fragmentation through deforestation, and other human activities such as introduction of invasive species have increased drastically during the past century. The Ecuadorian Andes are considered a biodiversity hotspot. However, the fauna and threats to the region are poorly studied, and understanding of factors that shape the distribution of species in habitats disturbed by human activities is needed to identify and mitigate region-wide threats to wildlife...
2018: PloS One
Manuel Calvopiña, Jessica Flores, Isabel Guaman, Gabriela Lara, Jeyson Abarca
For 11 years, a 38-year-old male residing in a subtropical region of Ecuador, was repeatedly diagnosed with chronic anemia, and treated with blood transfusions in a hospital of province of Cotopaxi, Ecuador. He was transferred to Quito for severe anemia, having hemoglobin of 4 g/dL. Duodenoscopy was performed and adult nematodes, identified later as Ancylostoma duodenale, were observed. The patient was successfully treated with albendazole for five consecutive days and given blood transfusions. In the control visit at eight months, without anemia and no hookworm ova in the stool examined were found...
October 2017: Revista Chilena de Infectología: órgano Oficial de la Sociedad Chilena de Infectología
Iván Chérrez-Ojeda, Juan Carlos Calderón, Andrea Fernández García, Donna B Jeffe, Ilka Santoro, Emanuel Vanegas, Annia Cherrez, José Cano, Freddy Betancourt, Daniel Simancas-Racines
Background: We aimed to assess recent Latin American medical school graduates' knowledge and attitudes about OSA and examine whether their knowledge and attitudes about OSA differed from practicing physicians. Methods: Recent medical graduates completed the Spanish translation of the OSA Knowledge and Attitudes (OSAKA) questionnaire at the 2013 national primary-care residency-placement meeting in Ecuador. The OSAKA includes 18 knowledge and five attitudinal items about OSA...
2018: Multidisciplinary Respiratory Medicine
Fareeduddin Quadri Syed, Ayman I Elkady, Furkhan Ahmed Mohammed, Muqtadir Baig Mirza, Khalid Rehman Hakeem, Saleh Alkarim
ETHNOPHARMACOLOGICAL RELEVANCE: Foeniculum vulgare Mill. (Fennel) is one of the most common herbs used in alternative medicines for its varied range of bioactivity. In Ecuador (South America), use of fennel in traditional cancer treatment is on record. AIM OF THE STUDY: The objective of the present study was to demonstrate the anti-proliferative and apoptotic effect of chloroform fraction of fennel (CFF) in MCF-7 cells. MATERIALS AND METHODS: Anti-proliferative assay (MTT assay) and colony formation assay was performed to study the growth inhibitory effect of CFF...
February 20, 2018: Journal of Ethnopharmacology
Tatjana Schnell, Rebekka Gerstner, Henning Krampe
BACKGROUND: At times, the question for meaning comes to nothing and a crisis of meaning ensues. This state is very painful, but difficult to account. Both those who suffer from it and care professionals find themselves at a loss for words. AIMS: This study introduces an operationalization of a crisis of meaning. It aims to distinguish the concept from depression, and to investigate whether a crisis of meaning can explain suicidality beyond the known protective and risk factors self-esteem, family functioning, life-event load, and depression...
February 23, 2018: Crisis
José Rincón, Diana Merchán, Agustin Sparer, Damodara Rojas, Edwin Zarate
The ecological condition of tropical Andean rivers are threatened by many human activities including changes in land use and cover in watersheds. Current protocols diagnose the structural condition of streams but not their function. In this study we proposed an assessment tool using the leaf-litter breakdown as a measure of the functional condition and health of high Andean streams in Southern Ecuador, including methodology and threshold values adapted to local conditions. We selected 15 streams in three micro-basins (Mazán, Llaviuco and Matadero) within or in the vicinity of Cajas National Park where we deployed litterbags for 15, 28 and 64 days...
March 2017: Revista de Biología Tropical
Sandra Lamouroux-López, Merling López, Héctor Flores
Pseudocurimata lineopunctata represents an important nutritional source for local human communities in Colombia and Ecuador. Although the yearly catch of this fish is low (590 kg/year), there are no restrictions on minimum size, and this species is categorized as vulnerable with moderate extinction risk by the Regional Autonomous Corporation of the Cauca Valley (Colombia). To support conservation programs, biological data of the target species are required. Therefore, the aims of this study were to describe the sex ratio, distribution, size to weight ratio, macroscopic stages of reproductive maturity, fecundity, and size at first sexual maturity for P...
March 2017: Revista de Biología Tropical
Márcia S Couri, Viviane R DE Sousa, Rafael M Lima, Nivia S Dias-Pini
Coenosia attenuata Stein (1903) is a predatory fly that is commonly found in greenhouses and open fields preying on whiteflies, leafminers, psocopterans and other insects. The species is widespread in the Old World and its distribution has expanded in recent times to Neotropical countries including Chile, Colombia, Costa Rica, Ecuador and Peru. We report here for the first time the presence of C. attenuata in Brazil, occurring in different sites in the State of Ceará (Northeastern Brazil). Expansion of the distribution range of this muscid to the eastern parts of South America opens up the possibility of applying the beneficial predator as a biological control agent for protected crops of the region...
February 19, 2018: Anais da Academia Brasileira de Ciências
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"