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Eduardo Padilla-Camberos, Carla P Barragán-Álvarez, Nestor E Diaz-Martinez, Vineet Rathod, José Miguel Flores-Fernández
Obesity affects millions of people worldwide, constituting a public health problem associated with premature mortality. Agave fructans decrease fat mass, body and liver weight, and generate satiety in rodents. In the present study the effects of agave fructans on weight control, lipid profile, and physical tolerability were evaluated in obese people. Twenty-eight obese volunteers were randomly divided into two groups. In the first group, 96 mg/bw of agave fructans was administered for 12 weeks; in the second group, maltodextrin as a placebo was administered for 12 weeks...
February 7, 2018: Plant Foods for Human Nutrition
Lucy Rowland, Antonio C L da Costa, Alex A R Oliveira, Rafael S Oliveira, Paulo L Bittencourt, Patricia B Costa, Andre L Giles, Azul I Sosa, Ingrid Coughlin, John L Godlee, Steel S Vasconcelos, João A S Junior, Leandro V Ferreira, Maurizio Mencuccini, Patrick Meir
CO2 efflux from stems (CO2_stem ) accounts for a substantial fraction of tropical forest gross primary productivity, but the climate sensitivity of this flux remains poorly understood. We present a study of tropical forest CO2_stem from 215 trees across wet and dry seasons, at the world's longest running tropical forest drought experiment site. We show a 27% increase in wet season CO2_stem in the droughted forest relative to a control forest. This was driven by increasing CO2_stem in trees 10-40 cm diameter...
February 3, 2018: New Phytologist
David Azul, Aron Arnold, Christiane Neuschaefer-Rube
Purpose: The purpose of this study was to investigate whether there are indications of gender-related voice problems in our transmasculine participants and to analyze how discrepancies between participant self-evaluations and researcher-led examinations can be best negotiated to ensure a participant-centered interpretation. Method: We conducted a participant-centered mixed-methods study combining qualitative content analyses of semistructured interviews, acoustical voice analyses, and an examination of gender attributions to voice...
December 22, 2017: Journal of Speech, Language, and Hearing Research: JSLHR
Carolina Belfiore, María V Curia, María E Farías
Lithium (Li) is widely distributed in nature and has several industrial applications. The largest reserves of Li (over 85%) are in the so-called "triangle of lithium" that includes the Salar de Atacama in Chile, Salar de Uyuni in Bolivia and Salar del Hombre Muerto in Argentina. Recently, the use of microorganisms in metal recovery such as copper has increased; however, there is little information about the recovery of lithium. The strain Rhodococcus sp. A5wh used in this work was previously isolated from Laguna Azul...
November 24, 2017: Revista Argentina de Microbiología
Antonio Rafael Coelho Jorge, Pedro Henrique Sá Costa, Helena Serra Azul Monteiro, Manassés Claudino Fonteles
Urodilatin (UD) and uroguanylin (UGN) have been implicated in the regulation of salt and water homeostasis, particularly in the balance handling of salt intake. In this sense, the aim of the present work was to study the main effects of these peptides in kidneys from animals subjected to high NaCl (2%) intake, during 10 days in metabolic cages. The control group received only normal water, whereas the treated group drank 2% solution of NaCl (NaCl 2%). In addition, we studied effect of subthreshold UD (0.14 nM) and UGN (0...
December 12, 2017: Hormone and Metabolic Research, Hormon- und Stoffwechselforschung, Hormones et Métabolisme
Emilio González-Reimers, María Castañeyra-Ruiz, Aioze Trujillo-Mederos, Matilde Arnay-de-la-Rosa
The Canary Archipelago was colonized by North African Berbers who arrived at the Islands in the first millenium BC. Although it was classically considered that the prehispanic population was more or less uniform, recent genetic analysis has disclosed that some differences did exist between inhabitants of the different islands. From pure anthropometrical point of view, detailed inspection of some bones such as tibiae of prehispanic inhabitants of different islands allow the detection of some differences in tibial shape, especially regarding the relative size of both the proximal and distal thirds of these bones...
December 1, 2017: Anthropologischer Anzeiger; Bericht über die Biologisch-anthropologische Literatur
María Azul Forti-Buratti, Inmaculada Palanca-Maresca, Lourdes Fajardo-Simón, Ibone Olza-Fernández, María Fe Bravo-Ortiz, Miguel Ángel Marín-Gabriel
Aim To compare the mother-to-infant bond of mothers who gave birth by elective C-section versus urgent C-section in the first 48-72h of life and 10-12weeks after delivery. METHODS: This is a cohort prospective study of women giving birth by C-section. 48-72h after delivery, sociodemographic variables were collected, Mother-to-Infant Bonding Scale and newborn's response to separation test were performed. 10-12weeks after delivery Mother-to-Infant Bonding Scale and questions about baby's feeding were completed...
October 12, 2017: Early Human Development
Annelle Mendez, Luisa E Castillo, Clemens Ruepert, Konrad Hungerbuehler, Carla A Ng
Conventional banana cultivation in Costa Rica relies on heavy pesticide use. While pesticide residues in exported bananas do not generally represent a safety concern for consumers abroad, ecosystem and human health in producing regions are not likewise protected. In Costa Rica, most studies on pesticide residues in the environment are snapshots, limiting our ability to identify temporal dynamics that can inform risk mitigation strategies. To help bridge this gap, we created a dynamic multimedia model for the Caño Azul River drainage area, which is heavily influenced by banana and pineapple plantations...
February 1, 2018: Science of the Total Environment
Azul Pinochet-Barros, John D Helmann
SIGNIFICANCE: Iron is required for growth and is often redox active under cytosolic conditions. As a result of its facile redox chemistry, iron homeostasis is intricately involved with oxidative stress. Bacterial adaptation to iron limitation and oxidative stress often involves ferric uptake regulator (Fur) proteins: a diverse set of divalent cation-dependent, DNA-binding proteins that vary widely in both metal selectivity and sensitivity to metal-catalyzed oxidation. Recent Advances: Bacteria contain two Fur family metalloregulators that use ferrous iron (Fe(2+)) as their cofactor, Fur and PerR...
October 31, 2017: Antioxidants & Redox Signaling
René Duarte Martins, Roberta Jeane Bezerra Jorge, Renata de Sousa Alves, Antônio Gomes da Silva Neto, Paulo Sergio F Barbosa, Alice Maria Costa Martins, Marcos H Toyama, Helena Serra Azul Monteiro
Sea anemones contain a variety of interesting biologically active compounds, including some potent toxins. PLA2 from Bunodosoma caissarum, a sea anemone endemic in the Brazilian southern coast, has shown renal alterations on isolated kidney. The aim of this study was to evaluate the renal and vascular effects of B. caissarum crude extract (BcE) on isolated perfused kidney and arteriolar mesenteric bed, as well the involvement of prostaglandins and endothelin. BcE did not show any effect on arteriolar mesenteric bed, but increased perfusion pressure, renal vascular resistance, urinary flow, glomerular filtration rate and decreased the percentage of sodium tubular transport on isolated perfused kidney...
November 2017: Toxicon: Official Journal of the International Society on Toxinology
Juan C Cusi, Jiří Moravec, Edgar Lehr, Václav Gvoždík
A new semiarboreal species of the Rhinella festae group is described from montane forests of the Cordillera Azul National Park between 1245 and 1280 m a.s.l. in the Cordillera Oriental, San Martín region, northern Peru. The new species is morphologically and genetically compared with members of the Rhinella acrolopha group (former genus Rhamphophryne) and members of the R. festae group. The new species is characterized by its large size (female SVL 47.1-58.3 mm, n = 4), eight presacral vertebrae, fusion of the sacrum and coccyx, long protuberant snout, snout directed slightly anteroventral in lateral view, cranial crests moderately developed, absence of occipital crest, presence of tympanic membrane, dorsolateral rows of small conical tubercles extending from parotoid gland to groin, hands and feet with long digits, fingers basally webbed and toes moderately webbed...
2017: ZooKeys
Joselito de Oliveira Neto, João Alison de Moraes Silveira, Daniel Silveira Serra, Daniel de Araújo Viana, Diva Maria Borges-Nojosa, Célia Maria Souza Sampaio, Helena Serra Azul Monteiro, Francisco Sales Ávila Cavalcante, Janaina Serra Azul Monteiro Evangelista
This study have analyzed the pulmonary function in an experimental model of acute lung injury, induced by the Crotalus durissus cascavella venom (C. d. cascavella) (3.0 μg/kg - i.p), in pulmonary mechanic and histology at 1 h, 3 h, 6 h, 12 h and 24 h after inoculation. The C. d. cascavella venom led to an increase in Newtonian Resistance (RN), Tissue Resistance (G) and Tissue Elastance (H) in all groups when compared to the control, particularly at 12 h and 24 h. The Histeresivity (η) increased 6 h, 12 h and 24 h after inoculation...
July 28, 2017: Toxicon: Official Journal of the International Society on Toxinology
Franziska Vielmuth, Ricarda G Schumann, Volker Spindler, Armin Wolf, Renate Scheler, Wolfgang J Mayer, Paul B Henrich, Christos Haritoglou
Objetivo: Evaluar la rigidez de la membrana limitante interna (MLI) humana y evaluar los posibles cambios de las propiedades mecánicas tras administrar una inyección intravítrea de ocriplasmina para tratar la tracción vitreomacular. Métodos: Este estudio se compone de una serie de casos intervencionales y comparativos de 12 muestras de MLI extraídas mediante cirugía y obtenidas de forma consecutiva de 9 ojos de 9 pacientes después de someterse sin éxito a vitreólisis farmacológica con ocriplasmina...
2017: Ophthalmologica. Journal International D'ophtalmologie
Sebastian Rodrigo Vanrell, Diego Humberto Milone, Hugo Leonardo Rufiner
Unobtrusive activity monitoring can provide valuable information for medical and sports applications. In recent years, human activity recognition has moved to wearable sensors to deal with unconstrained scenarios. Accelerometers are the preferred sensors due to their simplicity and availability. Previous studies have examined several \azul{classic} techniques for extracting features from acceleration signals, including time-domain, time-frequency, frequency-domain, and other heuristic features. Spectral and temporal features are the preferred ones and they are generally computed from acceleration components, leaving the acceleration magnitude potential unexplored...
July 3, 2017: IEEE Journal of Biomedical and Health Informatics
Ana Maria Gómez Ortiz, Elena Okada, Francisco Bedmar, José Luis Costa
In Argentina, glyphosate use has increased exponentially in recent years as a result of the widespread adoption of no-till management combined with genetically modified glyphosate-resistant crops. This massive use of glyphosate has created concern about its potential environmental impact. Sorption-desorption of glyphosate was studied in 3 Argentinean soils with contrasting characteristics. Glyphosate sorption isotherms were modeled using the Freundlich equation to estimate the sorption coefficient (Kf ). Glyphosate sorption was high, and the Kf varied from 115...
October 2017: Environmental Toxicology and Chemistry
Daniel Silveira Serra, Janaína Serra Azul Monteiro Evangelista, Walter Araujo Zin, José Henrique Leal-Cardoso, Francisco Sales Ávila Cavalcante
The combustion of residual glycerol to generate heat in industrial processes has been suggested as a cost-effective solution for disposal of this environmental liability. Thus, we investigated the effects of exposure to the exhaust gases of glycerol combustion in the rat respiratory system. We used 2 rats groups, one exposed to the exhaust gases from glycerol combustion (Glycerol), and the other exposed to ambient air (Control). Exposure occurred 5h a day, 5days a week for 13 weeks. We observed statistically changes in all parameters of respiratory system mechanics in vivo...
April 12, 2017: Respiratory Physiology & Neurobiology
Jesús Sotomayor-Bonilla, Carlos Antonio Abella-Medrano, Andrea Chaves, Paulina Álvarez-Mendizábal, Óscar Rico-Chávez, Sergio Ibáñez-Bernal, Melinda K Rostal, Rafael Ojeda-Flores, Arturo Barbachano-Guerrero, Gustavo Gutiérrez-Espeleta, A Alonso Aguirre, Peter Daszak, Gerardo Suzán
Arboviruses are important zoonotic agents with complex transmission cycles and are not well understood because they may involve many vectors and hosts. We studied sympatric wild mammals and hematophagous mosquitoes having the potential to act as hosts and vectors in two areas of southern Mexico. Mosquitoes, bats, and rodents were captured in Calakmul (Campeche) and Montes Azules (Chiapas), between November 2010 and August 2011. Spleen samples from 146 bats and 14 rodents were tested for molecular evidence of Venezuelan equine encephalitis virus (VEEV), eastern equine encephalitis virus (EEEV), western equine encephalitis virus (WEEV), and West Nile virus (WNV) using PCR protocols...
July 2017: Journal of Wildlife Diseases
Arica R VanderWal, Nishanth Makthal, Azul Pinochet-Barros, John D Helmann, Randall J Olsen, Muthiah Kumaraswami
Group A Streptococcus (GAS) is a human-only pathogen that causes a spectrum of disease conditions. Given its survival in inflamed lesions, the ability to sense and overcome oxidative stress is critical for GAS pathogenesis. PerR senses oxidative stress and coordinates the regulation of genes involved in GAS antioxidant defenses. In this study, we investigated the role of PerR-controlled metal transporter A (PmtA) in GAS pathogenesis. Previously, PmtA was implicated in GAS antioxidant defenses and suggested to protect against zinc toxicity...
June 2017: Infection and Immunity
C Ginja, L T Gama, A Martínez, N Sevane, I Martin-Burriel, M R Lanari, M A Revidatti, J A Aranguren-Méndez, D O Bedotti, M N Ribeiro, P Sponenberg, E L Aguirre, L A Alvarez-Franco, M P C Menezes, E Chacón, A Galarza, N Gómez-Urviola, O R Martínez-López, E C Pimenta-Filho, L L da Rocha, A Stemmer, V Landi, J V Delgado-Bermejo
Biodiversity studies are more efficient when large numbers of breeds belonging to several countries are involved, as they allow for an in-depth analysis of the within- and between-breed components of genetic diversity. A set of 21 microsatellites was used to investigate the genetic composition of 24 Creole goat breeds (910 animals) from 10 countries to estimate levels of genetic variability, infer population structure and understand genetic relationships among populations across the American continent. Three commercial transboundary breeds were included in the analyses to investigate admixture with Creole goats...
June 2017: Animal Genetics
M G Ferreira-García, A R Hernandez-Martinez, R Esparza, G A Molina, F Rodriguez-Melgarejo, S Jiménez, M Estevez
Currently, nanomaterials had been used for several applications; one of them is as bio-markers. These nanomaterials contain fluorescent compounds as effective indicators for imaging and other applications in Biotechnology. In previous studies, we proposed a functionalized nanomaterial-based biomarker from silica and Eysenhardtia Polystachia, a medicinal tree known in Mexico as "palo azul" (Kidneywood). Our previous results showed the feasibility of the nanomaterial obtained as bio-marker. In this article, our purpose is to evaluate the effects of extraction solvents on fluorescence of that biomarker...
March 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
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